CN111801529B - Air conditioner ceiling-mounted indoor unit - Google Patents

Abstract

In the present invention, the suction grille is supported at four points by four wires, the two wires arranged on one side are fixed to the first roller, and the two wires arranged on the other side are fixed to the second roller , therefore, two pairs of wire ropes can be simultaneously wound or unwound by the two roller motors that operate the first roller and the second roller respectively.

Description

Air conditioner ceiling-mounted indoor unit

technical field

The present invention relates to a ceiling-type indoor unit of an air conditioner, and more specifically, to a ceiling-type indoor unit capable of automatically lowering or raising a suction grille.

Background technique

Generally speaking, an air conditioner consists of a compressor, a condenser, an evaporator, and an expander, and uses an air conditioning cycle to supply cold or hot air to a building or room.

The air conditioner is structurally divided into a split type in which the compressor is arranged outdoors, and an integrated type in which the compressor is made integrally.

In the split type, the indoor heat exchanger is installed in the indoor unit, the outdoor heat exchanger and the compressor are installed in the outdoor unit, and the two separate devices are connected by refrigerant piping.

The integrated type is that the indoor heat exchanger, the outdoor heat exchanger and the compressor are arranged in a casing. As the one-piece air conditioner, there are a window-mounted air conditioner in which the device is directly mounted on a window, and a duct type air conditioner in which the suction duct and the discharge duct are connected and installed inside and outside the room, and the like.

The split-type air conditioners are generally classified according to the installation form of the indoor unit.

Vertical air conditioners that install the indoor unit vertically in the indoor space are called vertical air conditioners, wall-mounted air conditioners that install the indoor unit on the indoor wall, and ceiling-type indoor units that install the indoor unit on the ceiling of the room.

In the case of the ceiling-type indoor unit, the suction grille is arranged so as to face the ground. A filter for filtering impurities in the indoor air is disposed on the suction grille, and the filter can be separated and cleaned. In order to clean the filter, the user needs to periodically separate the suction grille from the housing.

The suction grille arranged in the ceiling-type indoor unit of the related art has a structure in which it is rotated and opened to one side. In the case of the ceiling-type indoor unit of the related art, since the suction grille is arranged on the ceiling of the room, there is a problem that the user needs to stand above a structure such as a chair in order to separate the suction grille.

prior art literature

Patent Literature

Korean Published Invention Patent 10-2008-0110109A

Korea authorized invention patent 10-0679838B1

SUMMARY OF THE INVENTION

technical issues

An object of the present invention is to provide a ceiling-type indoor unit of an air conditioner that can raise or lower the entire suction grille by simultaneously winding or unwinding two pairs of cords.

An object of the present invention is to provide a ceiling-type indoor unit of an air conditioner having a structure capable of simultaneously unwinding or winding four cords by using two motors.

An object of the present invention is to provide a ceiling-type indoor unit capable of preventing falling when a suction grille is raised or lowered.

An object of the present invention is to provide a ceiling-type indoor unit of an air conditioner capable of minimizing shaking when a suction grille is raised or lowered.

An object of the present invention is to provide a ceiling-type indoor unit of an air conditioner that can minimize separation of impurities attached to a filter when a suction grille is raised or lowered.

The objects of the present invention are not limited to the objects mentioned above, and those skilled in the art can clearly understand other objects mentioned from the following description.

technical solutions to problems

In the present invention, in a state where the suction grille is supported at four points by four wires, the suction grille can be simultaneously raised or lowered by two motors.

In the present invention, two wire ropes are arranged in a symmetrical manner at each drum, and therefore, the shaking of the suction grille can be minimized when the suction grille is raised or lowered.

In the present invention, the four wires support the four positions near the corners of the suction grille, and therefore, the shaking during ascending or descending of the suction grille can be minimized.

In the present invention, a pair of wire ropes arranged on one side of the suction grille is controlled by one motor, so that the height deviation with respect to one side of the suction grille can be minimized.

In the present invention, since the four wires are supported by the respective guides arranged on the housing, it is possible to minimize the shaking during the ascending or descending of the suction grille.

In the present invention, four cords support the four positions near the corners of the suction grille, so even if one cord is damaged, the remaining three cords can support the suction grille, thereby preventing the suction grille 's fall.

In the present invention, since the four wires are supported by the respective guides arranged on the housing, it is possible to suppress the shaking of the suction grille and minimize the separation of impurities attached to the filter during the descent of the suction grille. .

The present invention includes: a casing, which is suspended from a ceiling in the room, and has a suction port and a discharge port formed toward the lower side; a suction grille is arranged so as to be separable from the casing, covers the suction port of the casing, and Moves in the up-down direction from the housing; the 1st-1st cord is arranged on one side with respect to the suction grille, and its lower end is fixed to the suction grille; the 1st-2nd cord is connected to the suction grille The grille is arranged on one side, and its lower end is fixed to the suction grille; the 2-1 wire is arranged on the other side for the suction grille, and its lower end is fixed to the suction grille; 2-2 wire A cord is arranged on the other side of the suction grille, and its lower end is fixed to the suction grille; a first unit is arranged inside the casing, and is connected with the 1-1 cord and the 1-1 The respective upper ends of the 2 cords are combined, and one side of the suction grille is raised or lowered by simultaneously winding or unwinding the 1-1 cord and the 1-2 cord; and Two units, arranged inside the casing, are combined with the respective upper ends of the 2-1 cord and the 2-2 cord, and simultaneously wind or unwind the 2-1 cord and the 2-2 cord to raise or lower the other side of the suction grill, the first unit includes a first roller, the upper end of the 1-1 cord and the first The upper ends of the 1-2 wire ropes are respectively fixed on the first roller; and the first roller motor is used to rotate the first roller, and the 1-1 wire rope is arranged for the first roller In one side direction, the 1-2 wire is arranged in the opposite direction to the 1-1 wire, the second unit includes a second roller, and the upper end of the 2-1 wire is and the upper ends of the 2-2 wires are respectively fixed on the second roller; and a second roller motor for rotating the second roller. The two rolls are arranged in one direction, and the 2-2 wire is arranged in the opposite direction to the 2-1 wire.

The first unit and the second unit may be arranged to face each other with reference to the center O of the suction grille.

The first roller may include: a first area formed on the outer peripheral surface of the first roller, the upper end of the 1-1 wire rope being fixed to the first area, the 1-1 wire The rope is wound around the first area; and the second area is formed on the outer peripheral surface of the first drum, the upper end of the 1-2 wire rope is fixed to the second area, and the 1-2 wire rope is fixed on the second area. 2. The wire rope is wound on the second area, the second roller includes: a first area formed on the outer peripheral surface of the second roller, and the upper end of the 2-1 wire rope is fixed on the a first area, on which the 2-1 wire rope is wound; and a second area, formed on the outer peripheral surface of the second drum, and the upper end of the 2-2 wire rope is fixed on In the second area, the 2-2 wire is wound around the second area.

The first roller may further include a first portion for dividing the first area and the second area, the first portion protruding from the outer peripheral surface of each roller, and the second roller may further A second portion for dividing the first region and the second region is included, and the second portion protrudes from the outer peripheral surface of each of the rollers.

The first portion may protrude along the radial direction of the first roller, be formed along the circumferential direction of the first roller, and be orthogonal to the motor axis of the first roller motor, the The second portion protrudes along the radial direction of the second roller, is formed along the circumferential direction of the second roller, and is orthogonal to the motor axis of the second roller motor.

The first region and the second region of the first roll may be arranged in parallel, and the first region and the second region of the second roll may be arranged in parallel.

The first roller may form an axis center rotated by the first roller motor, the second roller may form an axis center rotated by the second roller motor, and the first roller The shaft center and the shaft center of the second roll are arranged in a row.

The upper end of the 1-1 wire fixed on the first area and the upper end of the 1-2 wire fixed on the second area can be in a shape with the axis center of the first roller as a reference. symmetry,

The upper end of the 2-1 wire fixed on the first area and the upper end of the 2-2 wire fixed on the second area are in the shape of the axis center of the second drum. symmetry.

The first unit may further include: a first unit casing, the first roller and the first roller motor are arranged in the first unit casing, and the first unit casing is fixed inside the casing, The second unit further comprises: a second unit casing, the second roller and the second roller motor are arranged in the second unit casing, the second unit casing is fixed inside the casing, so The first unit housing comprises: a first hole through which the 1-1st wire passes through; and a second hole through which the 1-2th wire passes through the second hole, and the second The unit housing includes: a first hole through which the 2-1 wire passes through; and a second hole through which the 2-2 wire passes through the second hole. The interval between the first hole and the second hole is formed to be the same as the interval between the first hole and the second hole in the second unit case.

The first hole and the second hole of the first unit casing may be opened toward the lower side, and the first hole and the second hole of the second unit casing may be opened toward the lower side.

The first hole and the second hole of the first unit case may be arranged on a side wall of the first unit case, and the first hole and the second hole of the first unit case may be arranged in opposite directions to each other , the first hole and the second hole of the second unit casing are arranged on the side wall of the second unit casing, and the first hole and the second hole of the second unit casing are arranged to face opposite directions to each other .

The present invention may further include: a first cord guide arranged on the housing, supporting the 1-1 cord, and located on the upper side of the suction grille; and a second cord guide arranged on the A housing supports the 1-2 cords and is located on the upper side of the suction grille; a third cord guide is arranged on the housing and supports the 2-1 cords and is located on the suction grille an upper side of the grille; and a fourth wire guide disposed on the housing, supporting the 2-2 wire, and located on the upper side of the suction grille, the first unit housing the first The hole is arranged to face the first wire guide, the second hole of the first unit case is arranged to face the second wire guide, and the first hole of the second unit case is arranged to face the second wire guide. The said 3rd wire guide is arrange|positioned so that the 2nd hole of the said 2nd unit case may face the said 4th wire guide.

The present invention may further include: a first rotation sensing device, disposed in the first unit, for sensing the rotation of the first roller; and a second rotation sensing device, disposed in the second unit, For sensing the rotation of the second roller, the first rotation sensing device includes: a rotation sensing factor, which is arranged on the first roller and is performed together with the rotation of the first roller a rotation; a sensor arranged apart from the rotation sensing factor for sensing the rotation of the rotation sensing factor; and a printed circuit board, the sensor arranged on the printed circuit board, the second rotation The sensing device includes: a rotation sensing factor, which is arranged on the second roller, and rotates together with the rotation of the second roller; a sensor, which is arranged apart from the rotation sensing factor and is used for sensing measuring the rotation of the rotation sensing factor; and a printed circuit board on which the sensor is arranged.

Each of the sensors may be an infrared sensor, the rotation sensing factor is a serration that protrudes outward in the radial direction of the roller, and the sensor senses an infrared signal constrained by the serration.

The sensor may include a light-emitting portion and a light-receiving portion, and the rotation sensing device may further include: a sensor mounting portion, where the light-emitting portion and the light-receiving portion are provided on the sensor mounting portion; and a slot formed in the sensor The mounting portion is recessed to allow the rotation sensing factor to pass through the slot, and the light-emitting portion and the light-receiving portion are disposed on opposite sides of each other with the slot as a reference.

The first unit may further include: a 1-1 roll box, which is arranged on one side of the first roll, and the 1-1 wire rope is arranged through the 1-1 roll box, when the When the 1-1 wire rope is wound or unwound, the 1-1 roll box is aligned with the position of the 1-1 wire rope; the 1-2 roll box is arranged at the position of the first roller. On the other side, the 1-2 wire rope is arranged through the 1-2 roll box, and when the 1-2 wire rope is wound or unwound, the 1-2 roll box is aligned with the the position of the 1-2 wire rope; and a first rotation amount sensing device for sensing the rotation amount of the first roller, the second unit further comprising: a 2-1 roller box, for the The second roller is arranged on one side, the 2-1 wire rope is arranged through the 2-1 roll box, and when the 2-1 wire rope is wound or unwound, the 2-1 wire rope 1 roll box is aligned with the position of the 2-1 line; the 2-2 roll box is arranged on the other side of the second roll, and the 2-2 line passes through the 2-2 a roll box configured to align the position of the 2-2 wire rope when the 2-2 wire rope is wound or unwound; and a second rotation amount sensing device, using for sensing the rotation of the second roller.

The first roller may include: a first roller body formed in a cylindrical shape, and upper ends of the 1-1 wire and the 1-2 wire are respectively fixed to the first roller body The first area is arranged on the outer peripheral surface of the first roller body, and the 1-1 wire is wound around the first area; the second area is arranged on the outer circumference of the first roller body On the surface, the 1st-2nd wire rope is wound in the second area; the part is arranged to protrude to the outside of the first roller main body, and is used to divide the first area and the second area; A 1-1 partition, which protrudes to the outside of the first roller body, is used to prevent the 1-1 wire from escaping to the outside of the first area; and a 1-2 partition, which is directed to the The outer side of the first roller body protrudes to prevent the 1-2 wires from escaping to the outside of the second area, and the second roller includes: a second roller body, which is formed in a cylindrical shape , the upper ends of the 2-1 wire rope and the 2-2 wire rope are respectively fixed on the second roller body; the first area is arranged on the outer peripheral surface of the second roller body, and the The 2-1 wire is wound in the first area; the second area is arranged on the outer peripheral surface of the second drum main body, and the 2-2 wire is wound in the second area; part , which is configured to protrude to the outside of the second roller body, and is used to divide the first area and the second area; the 2-1 partition is protruded to the outside of the second roller body, for preventing the 2-1 cord from escaping to the outside of the first area; and a 2-2 partition protruding to the outside of the second roller body for preventing the 2-2 The line escapes to the outside of the second area.

The present invention may further include: a first unit casing disposed inside the casing, the first roller, the first roller motor, the 1-1 roll box and the 1-2 roll box are arranged inside; the second a unit casing is arranged inside the casing, the second roller, the second roller motor, the 2-1 roll box and the 2-2 roll box are arranged inside; the first hole is formed in the first the unit casing, the 1-1 cord passes through the first hole; the second hole is formed in the first unit casing, and the 1-2 wire passes through the second hole; the first hole, The 2-1st wire is formed in the second unit case, and the 2-1 wire is passed through the first hole; and the second hole is formed in the second unit case, and the 2-2 wire is passed through the first hole. Two holes, the first hole and the second hole of the first unit casing are arranged on the side wall of the first unit casing, and the first hole and the second hole of the first unit casing are in opposite directions to each other. The first hole and the second hole of the second unit casing are arranged on the side wall of the second unit casing, and the first hole and the second hole of the second unit casing are in opposite directions to each other. way to configure.

The present invention may further include: a first cord guide arranged on the housing, supporting the 1-1 cord, and located on the upper side of the suction grille; and a second cord guide arranged on the A housing supports the 1-2 cords and is located on the upper side of the suction grille; a third cord guide is arranged on the housing and supports the 2-1 cords and is located on the suction grille an upper side of the grille; and a fourth wire guide disposed on the housing, supporting the 2-2 wire, and located on the upper side of the suction grille, the first unit housing the first The hole is arranged to face the first wire guide, the second hole of the first unit case is arranged to face the second wire guide, and the first hole of the second unit case is arranged to face the second wire guide. The said 3rd wire guide is arrange|positioned so that the 2nd hole of the said 2nd unit case may face the said 4th wire guide.

The 1-1 roll box and the 1-2 roll box may be arranged symmetrically with respect to the motor axis of the first roll motor, and the 2-1 roll box and the 2-2 roll box The roll box is arranged symmetrically with respect to the motor axis of the second roll motor.

effect of invention

The ceiling-type indoor unit of the air conditioner of the present invention has one or more of the following effects.

First, in the present invention, the two wire ropes arranged on one side are fixed to the first roller, and the two wire ropes arranged on the other side are fixed to the second roller. Therefore, by making the first roller and the The two drum motors running separately on the second drum are capable of winding or unwinding two pairs of wire ropes at the same time.

Second, in the present invention, since the suction grille is supported at four points by four wires, the suction grille can be stably raised or lowered.

Third, in the present invention, the lifter is configured to simultaneously wind or unwind four wire ropes and use two motors, so that material costs required for production can be saved and control can be simplified.

Fourth, in the present invention, two wire ropes are fixed on one drum, so that two wire ropes can be wound or unwound at the same time.

Fifth, in the present invention, since the suction grille is kept in close contact with the front main body in a state where the suction grille is supported by the four wires, the suction grille is immediately lowered during the operation of the lifter.

Sixth, in the present invention, although two wire ropes are fixed to one drum, each wire rope is wound or unwound in each area of the drum, so that the length and speed of the wire rope can be uniformly controlled.

Seventh, in the present invention, the rotation amount sensing devices for sensing the rotation amount and the rotation speed of the rollers are arranged in the first unit and the second unit, respectively, so that the two roller motors can be controlled identically.

Eighth, in the present invention, two wire ropes are arranged in a symmetrical manner on each roller, so that the shaking of the suction grille can be minimized when the suction grille is raised or lowered.

Description of drawings

FIG. 1 is a perspective view showing an air conditioner indoor unit according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an operation example of FIG. 1 .

FIG. 3 is a cross-sectional view of FIG. 1 .

FIG. 4 is an exploded perspective view showing the front panel of FIG. 1 .

FIG. 5 is a plan view showing the arrangement of the front panel and the lifter of FIG. 1 .

FIG. 6 is a bottom view of the front panel shown in FIG. 1 .

FIG. 7 is a lower perspective view showing the lifter of FIG. 2 .

FIG. 8 is a bottom view showing the front panel and the lifter of FIG. 2 .

FIG. 9 is a perspective view showing the internal structure of the lifter of FIG. 2 .

FIG. 10 is a plan view of FIG. 9 .

Fig. 11 is a diagram showing an example of the operation of the lifter according to the first embodiment of the present invention.

FIG. 12 is an illustration showing the attachment structure of the wire rope of the first embodiment of the present invention.

FIG. 13 is a plan view of the suction grill shown in FIG. 4 .

FIG. 14 is an exploded perspective view of the cord guide shown in FIG. 2 .

Fig. 15 is a diagram showing an example of the operation of the ceiling-type indoor unit according to the second embodiment of the present invention.

FIG. 16 is a lower perspective view showing the lifter of FIG. 15 .

FIG. 17 is a perspective view showing the internal structure of the lifter of FIG. 16 .

FIG. 18 is a plan view of FIG. 17 .

Fig. 19 is a diagram showing an example of the operation of the lifter according to the second embodiment of the present invention.

FIG. 20 is an illustration diagram showing an arrangement state of the cords of the third embodiment of the present invention.

Detailed ways

The advantages and features of the present invention and the method for realizing the same can be more clearly understood by referring to the accompanying drawings and the embodiments described in detail later. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms. The present embodiment is only for the purpose of more complete disclosure of the present invention, so as to be more comprehensible to those of ordinary skill in the technical field to which the present invention belongs. The scope of the present invention is fully indicated, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals denote the same structural elements.

The present invention will be specifically described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an air conditioner indoor unit according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an operation example of FIG. 1 . FIG. 3 is a cross-sectional view of FIG. 1 . FIG. 4 is an exploded perspective view showing the front panel of FIG. 1 . FIG. 5 is a plan view showing the arrangement of the front panel and the lifter of FIG. 1 . FIG. 6 is a bottom view of the front panel shown in FIG. 1 . FIG. 7 is a lower perspective view showing the lifter of FIG. 2 . FIG. 8 is a bottom view showing the front panel and the lifter of FIG. 2 . FIG. 9 is a perspective view showing the internal structure of the lifter of FIG. 2 . FIG. 10 is a plan view of FIG. 9 . Fig. 11 is a diagram showing an example of the operation of the lifter according to the first embodiment of the present invention. FIG. 12 is an illustration showing the attachment structure of the wire rope of the first embodiment of the present invention. FIG. 13 is a plan view of the suction grill shown in FIG. 4 . FIG. 14 is an exploded perspective view of the cord guide shown in FIG. 2 .

<Configuration of indoor unit>

The indoor unit of the air conditioner in this embodiment includes: a casing 100 formed with a suction port 101 and a discharge port 102; an indoor heat exchanger 130 arranged inside the casing 100; an indoor fan 140 arranged inside the casing 100 to make Air flows through the suction port 101 and the discharge port 102 .

In the indoor unit, the suction port 101 and the discharge port 102 are both formed on the bottom surface. The indoor unit sucks air from the bottom surface, and then expels air to the bottom surface again.

In the indoor unit, only a part of the casing 100 is exposed to the outside, and most of the casing 100 is buried in the ceiling and hidden.

The housing 100 further includes a suction grille 320 arranged to face the indoor floor, and a lifter 500 for raising or lowering the suction grille 320 in the vertical direction is arranged inside the housing 100 .

In the case of receiving the operation signal input by the user, the lifter 500 operates, and with the operation of the lifter 500, the four wires 511, 512, 521, and 522 are simultaneously unwound or wound, and the The suction grill 320 in which the wires 511, 512, 521, 522 are combined can move in the vertical direction.

The structure of the lifter 500 for raising and lowering the suction grill 320 will be described in more detail later.

<The structure of the casing>

In this embodiment, the housing 100 includes a housing shell 110 and a front panel 300 . The outer casing 100 is installed by being suspended from a ceiling in the room by a hanger (not shown), and the lower side thereof is formed with an opening. The front panel 300 covers the open surface of the outer casing 110 and is disposed toward the indoor floor. The front panel 300 is exposed indoors, and the suction port 101 and the discharge port 102 are formed.

The casing 100 can be implemented in various ways according to the manufacturing form, and the structure of the casing 100 does not limit the technical idea of the present invention.

Both the suction port 101 and the discharge port 102 are arranged on the front panel 300 . In this embodiment, only the front panel 300 is exposed to the outside, and the outer casing 110 is buried in the ceiling and hidden. The front panel 300 is disposed on the lower side of the housing case 110 . The suction grill 320 is located inside the front panel 300 . The suction grill 320 is located on the same horizontal line as the front panel 300 and is located at a lower position than the outer casing 110 .

Both the suction port 101 and the discharge port 102 are open toward the lower side. The suction port 101 and the discharge port 102 are located at a lower position than the indoor heat exchanger 130 and the indoor fan 140 .

The suction port 101 is disposed in the center of the front panel 300 , and the discharge port 102 is disposed outside the suction port 101 . The number of the suction ports 101 or the number of the discharge ports 102 is irrelevant to the technical idea of the present invention. In this embodiment, one suction port 101 is formed, and a plurality of the discharge ports 102 are arranged.

In this embodiment, the suction port 101 is formed in a quadrangular shape when viewed from the bottom, and four discharge ports 102 are arranged at predetermined intervals from each edge of the suction port 101 .

<Configuration of indoor heat exchanger>

The indoor heat exchanger 130 is arranged between the suction port 101 and the discharge port 102, and the indoor heat exchanger 130 divides the inside of the casing 100 into an inner side and an outer side. The indoor heat exchanger 130 is arranged vertically in this embodiment.

An indoor blower fan 140 is arranged inside the indoor heat exchanger 130 .

When the indoor heat exchanger is viewed from a top view or a bottom view, its overall shape is formed as "□", and a part of its sections can be separated.

The indoor heat exchanger 130 is arranged so that the air discharged from the indoor ventilation fan 140 enters vertically.

A drain pan 132 is provided inside the housing 100 , and the indoor heat exchanger 130 is placed on the drain pan 132 . The condensed water generated from the indoor heat exchanger 130 may be stored after flowing to the drain pan 132 . A drain pump (not shown) for draining the collected condensed water to the outside is arranged in the drain pan 132 .

The drain pan 132 may be formed with a directional inclined surface, so that the condensed water flowing down from the indoor heat exchanger 130 is collected to one side and stored.

<Constitution of indoor ventilation fan>

The indoor ventilation fan 140 is located inside the casing 100 and is arranged on the upper side of the suction port 101 . The indoor blower fan 140 uses a centrifugal blower that sucks air in the center and discharges the air in the circumferential direction.

The indoor fan 140 includes a bell mouth 142 , a fan 144 and a fan motor 146 .

The bell mouth 142 is arranged on the upper side of the suction grille 320 and on the lower side of the fan 144 . The bell mouth 142 guides the air passing through the intake grill 320 towards the fan 144 .

The fan motor 146 rotates the fan 144 . The fan motor 146 is fixed to the outer casing 110 . The fan motor 146 is arranged above the fan 144 . At least a portion of the fan motor 146 is located higher than the fan 144 .

The motor shaft of the fan motor 146 is disposed toward the lower side, and the fan 144 is coupled to the motor shaft.

The indoor heat exchanger 130 is arranged outside the edge of the fan 144 . The fan 144 and at least a part of the indoor heat exchanger 130 are arranged on the same horizontal line. In addition, at least a part of the bell mouth 142 is inserted into the inside of the fan 144 . In the up-down direction, at least a part of the bell mouth 142 overlaps with the fan 144 .

<Configuration of the flow path>

The indoor heat exchanger 130 is disposed inside the outer casing 110, and divides the inner space of the outer casing 110 into an inner side and an outer side.

The inner space surrounded by the indoor heat exchanger 130 is defined as the suction flow path 103 , and the outer space of the indoor heat exchanger 130 is defined as the discharge flow path 104 .

The indoor blower fan 140 is arranged in the suction flow path 103 . The discharge flow path 104 is between the outside of the indoor heat exchanger 130 and the side wall of the outer casing 110 .

When viewed from the top or bottom, the suction channel 103 is the inner side surrounded by "□" of the indoor heat exchanger, and the discharge channel 104 is the outer side surrounded by the "□" of the indoor heat exchanger.

The suction flow path 103 communicates with the suction port 101 , and the discharge flow path 104 communicates with the discharge port 103 .

Air flows from the lower side of the suction flow path 103 to the upper side, and flows from the upper side of the discharge flow path 104 to the lower side. Taking the indoor heat exchanger 130 as a reference, the flow direction of the air will be reversed by 180 degrees.

The suction port 101 and the discharge port 102 are formed on the same surface of the front panel 300 .

The suction port 101 and the discharge port 102 are arranged so as to face the same direction. In this embodiment, the suction port 101 and the discharge port 102 are arranged so as to face the indoor floor.

When the front panel 300 is formed with buckling, the discharge port 102 may be formed to have a slight side face slope, but the discharge port 102 connected to the discharge flow path 104 is formed so as to face downward.

In the present invention, a vane module 200 for controlling the direction of the air discharged through the discharge port 102 is disposed.

When the air flows from the suction flow path 103 to the discharge flow path 104, the air flows in the horizontal direction. The air flows radially outward from the center of the fan 144 and passes through the indoor heat exchanger 130 . Based on the indoor heat exchanger 130, the air flows of the suction flow path 103 and the discharge flow path 104 are arranged to be opposite to each other. That is, in the suction flow path 103, the air flows from the lower side to the upper side, and in the discharge flow path 104, the air flows from the upper side to the lower side.

<Configuration of the front panel>

The front panel 300 includes: a front main body 310, which is combined with the outer casing 110 and is formed with the suction port 101 and the discharge port 102; a suction grill 320 is formed with a plurality of grill holes 321 for covering the The suction port 101 ; the pre-filter 330 is assembled on the suction grill 320 in a separable manner; the vane module 200 is arranged on the front main body 310 for controlling the air flow direction of the discharge port 102 .

The suction grille 320 is arranged so as to be separated from the front main body 310 . Although the suction grill 320 is in close contact with the front main body 310, no structural element for assembling or combining the front main body 310 and the suction grill 320 is disposed.

The suction grille 320 is kept in close contact with the front main body 310 by being pulled by a wire, and can be lowered or raised according to the operation of the lifter 500 .

The suction grill 320 can be ascended or descended in the vertical direction on the front main body 310 by the lifter 500 . The suction grill 320 covers the entire suction port 101 .

The lifter 500 and the suction grille 320 are connected by four wires, and the lifter 500 moves the suction grille 320 in the up-down direction by winding or unwinding the wires.

In this embodiment, the suction grille 320 is formed with a plurality of grille holes 321 in a lattice form. The grill hole 321 is communicated with the suction port 101 .

A pre-filter 330 is arranged on the upper side of the suction grill 320 . The pre-filter 330 filters the air drawn into the housing 100 . The pre-filter 330 is located on the upper side of the grille hole 321 and filters the air passing through the suction grille 320 .

The discharge port 102 is formed in the shape of a long slit along the edge of the suction port 101 . The blade module 200 is located on the spout 102 and combined with the front main body 310 .

In this embodiment, the blade module 200 may be separated to the lower side of the front body 310 . That is, the blade module 200 is arranged independently of the coupling structure of the front main body 310 , and can be separated from the front main body 310 independently. The structure related to this will be described in more detail later.

<Configuration of front main body>

The front main body 310 is coupled to the lower side of the outer casing 110, and is disposed in a direction facing the room. The front body 310 is installed on the ceiling of the room and exposed to the room.

The front main body 310 is combined with the outer casing 110 , and the outer casing 110 supports the load of the front main body 310 . The front main body 310 supports the load of the suction grill 320 and the pre-filter 330 .

The front main body 310 is formed in a quadrangular shape in plan view. The shape of the front body 310 can be formed in various ways.

The upper side of the front main body 310 is formed in a horizontal manner so as to be close to the ceiling, and the edge of the lower side of the front main body 310 may be slightly curved.

The suction port 101 is arranged in the center of the front main body 310 , and a plurality of discharge ports 102 are arranged outside the edge of the suction port 101 .

When viewed from above, the suction port 101 may be formed in a square shape, and the discharge port 102 may be formed in a rectangular shape. The discharge port 102 may be formed into a slit shape whose length is longer than its width.

The front main body 310 includes a front frame 312 , a side cover 314 , and a corner cover 316 .

The front frame 312 provides the load and rigidity of the front panel 300 and is fastened to the outer casing 110 . The intake port 101 and the four discharge ports 102 are formed in the front frame 312 .

In this embodiment, the front frame 312 includes a side frame 311 and a corner frame 313 .

The corner frames 313 are arranged at each corner of the front panel 300 . The side frame 311 is combined with the two corner frames 313 . The side frame 311 includes an inner frame 311a and an outer frame 311b.

The inner side frame 311a is arranged between the suction port 101 and the discharge port 102, and is used to couple the two corner frames 313 together. The outer frame 311b is arranged outside the discharge port 102 .

In this embodiment, four inner side frames 311a and four outer side frames 311b are provided.

The suction ports 101 are located inside the four inner side frames 311a. The discharge port 102 is formed by being surrounded by the two corner frames 313, the inner frame 311a, and the outer frame 311b.

In addition, the side cover 314 and the corner cover 316 are combined with the bottom surface of the front frame 312 . The side cover 314 and the corner cover 316 are exposed to the user, and the front frame 312 is not seen by the user.

The side cover 314 is disposed at the edge of the front frame 312 , and the corner cover 316 is disposed at the corner of the front frame 312 .

The side cover 314 is made of synthetic resin and fastened to the front frame 312 . Specifically, the side cover 314 is combined with the side frame 311 , and the corner cover 316 is combined with the corner frame 313 .

In this embodiment, there are four side covers 314 and four corner covers 316 respectively. The side cover 314 and the corner cover 316 are combined with the front frame 312 and connected as a combination. In the front panel 300, four side covers 314 and four corner covers 316 form an edge.

The side cover 314 is arranged on the lower side of the side frame 311 , and the corner cover 316 is arranged on the lower side of the corner frame 313 .

The four side covers 314 and the four corner covers 316 are assembled to form a quadrilateral frame. The connected four side covers 314 and the four corner covers 316 are defined as a front trim 350 .

The front trim 350 forms an outer border (351, outer border) and an inner border (352, inner border) of the trim.

When viewed from a top or bottom view, the outer boundary 351 of the decoration is formed as a quadrangle, and the overall shape of the inner boundary 352 of the decoration is also formed as a quadrangle. However, the corners of the inner boundary of the decorative element form a prescribed curvature.

The suction grill 320 and the four vane modules 200 are arranged inside the interior boundary 352 of the trim. In addition, the suction grill 320 and the four blade modules 200 are arranged in contact with the interior boundary 352 of the trim.

In this embodiment, there are four side covers 314 , and each side cover 314 is combined with the front frame 312 . The outer edge of the side cover 314 forms part of the trim outer boundary 351 and the inner edge forms part of the trim inner boundary 352 .

In particular, the inner edge of the side cover 314 forms the outer boundary of the spout 102 . The inner edge of the side cover 314 is defined as the side trim interior boundary 315 .

In this embodiment, there are four corner covers 316 , and each corner cover 316 is combined with the front frame 312 . The outer edge of the corner cover 316 forms part of the outer border 351 of the trim, and the inner edge forms part of the inner border 352 of the trim.

The inner edge of the corner cover 316 is defined as the inner border 317 of the corner trim.

The inner border 317 of the corner trim may be configured to be in contact with the suction grill 320 . In this embodiment, the inner edge of the corner cover 316 is arranged to face the suction grill 320, and is spaced at a predetermined interval to form a gap 317a.

Similarly, the inner boundary 315 of the side trim is spaced apart from the blade module 200 by a predetermined interval to form a gap 315 a, and is disposed so as to face the outer edge of the blade module 200 .

Thus, the inner boundary 352 of the trim is spaced apart from the outer edges of the four blade modules 200 and the suction grille 320 by a predetermined interval and forms a continuous gap.

The continuous gap formed by the four side trim inner border gaps 315a and the four corner trim inner border gaps 317a is defined as a front trim gap 350a.

The front trim gap 350 a is formed at the inner edge of the front trim 350 . Specifically, the front trim gap 350 a is formed by the outer edges of the blade module 200 and the suction grille 320 and the inner edge of the front trim 350 being separated.

When the vane module 200 is not in operation (when the indoor unit is stopped), the front trim clearance 350a causes the suction grill 320 and the vane module 200 to be regarded as a structure.

<Constitution of suction grille>

The suction grill 320 is located on the lower side of the front main body 310 . The suction grill 320 can be raised and lowered downward while being in close contact with the bottom surface of the front main body 310 .

The suction grill 320 includes: a grill body 322; a plurality of grill holes 321 penetrating the grill body 322 in the up-down direction; The other end of the rope is fixed to the rope fixing part 329 ; the filter joint part 331 , and the pre-filter 330 is assembled to the filter joint part 331 in a separable manner.

The suction grill 320 includes: a grill main body 322, which is arranged on the lower side of the suction port 101, communicated with the suction port 101 through a plurality of grill holes 321, and is formed into a quadrilateral shape; the corners of the grille The portion 327 extends from the corner of the grid body 322 along the diagonal direction.

The bottom surface of the grill body 322 and the bottom surface of the vanes 210 may form a continuous surface. In addition, the bottom surface of the grill body 322 and the bottom surface of the corner cover 316 may form a continuous surface.

A plurality of grids 323 are arranged in a lattice form inside the grid body 322 . The grids 323 in the lattice form form grid holes 321 in the form of quadrilaterals. The part in which the said grille 323 and the grille hole 321 are formed is defined as a suction part.

The grill body 322 includes a grill 323 having a plurality of grill holes 321 formed therein, and a grill body portion 324 arranged along the edge of the grill 323 and surrounding the grill 323 . The overall shape of the suction portion is formed in a quadrangle when viewed from a plan view or a bottom view.

The pre-filter 330 is located on the upper side of the suction part and covers the suction part.

Each corner of the suction part is arranged toward each corner of the front panel 300 , and more specifically, it is arranged toward the corner cover 316 .

The grill body 322 is formed in a quadrangular shape when viewed from the bottom.

The outer edge of the grill body portion 324 is arranged so as to face the discharge port 102 or the front trim 350 .

The outer edge of the grill body portion 324 includes: grille corner borders 326 arranged to face the corner cover 316 ; grille side borders 325 forming the spout 102 and facing all The side covers 314 are arranged so as to face each other.

The grille corner boundary 326 may be formed as a curvature centered on the inner side of the suction grille 320 , and the grille side boundary 325 may be formed as a curvature centered on the outer side of the suction grille 320 .

The grill body portion 324 further includes a grille corner portion 327 surrounded by the grille corner boundary 326 and the two grille side boundaries 325 . The grille corner portion 327 is formed to protrude from the grille main body portion 324 to the corner cover 316 side.

The grille corners 327 are arranged at each corner of the grille main body 322 . The grille corners 327 extend toward the corners of the front panel 300 .

In this embodiment, there are four corners 327 of the grille. For the convenience of description, the four grille corners 327 are defined as a first grille corner 327-1, a second grille corner 327-2, a third grille corner 327-3 and Fourth grille corner 327-4.

The grille side boundary 325 is formed in a concave shape from the outer side to the inner side.

The discharge port 102 is formed between the side cover 314 and the suction grill 320 . More specifically, a spout 102 is formed between the inner boundary 315 of the side trim of the side cover 314 and the side boundary 325 of the grille main body 322 . Each discharge port 102 is formed between the side trim inner boundary 315 and the grille side boundary 325 arranged in the four directions of the suction grill 320 .

In this embodiment, the length of the grille corner boundary 326 and the corner trim inner boundary 317 are configured to face each other. Additionally, the length of the grille corner border 326 is the same as the length of the corner trim interior border 317 . That is, the width of the corner cover 316 and the width of the grille corner portion 327 are formed to be the same. Also, the inner width of the side cover 314 and the width of the grille side boundary 325 are formed to be the same.

The grid side boundaries 325 are distinguished in more detail as follows.

The grille side boundary 325 forms the inner boundary of the spout 102 . The inner border 315 of the side trim and the inner border 317 of the corner trim form the outer border of the spout 102 .

The grille side boundary 325 includes: a long straight section 325a, which extends along the length direction of the spout 102 and is formed as a straight line; a first curved section 325b, which is close to the long straight section 325a. One side is connected, and its center of curvature is formed on the outside of the suction grille 320; the second curved section 325c is connected with the other side of the long straight section 325a, and its center of curvature is formed on the The outside of the suction grille 320; the first short straight section 325d is connected with the first curved section 325b; the second short straight section 325e is connected with the second curved section 325c.

A discharge port 102 is formed between the grille side boundary 325 and the side trim inner boundary 315 , and the blade module 200 is arranged in each of the discharge ports 102 .

The inner edge 210a of the blade 210 of the blade module 200 is arranged to face the grille side boundary 325, and the outer edge 210b of the blade 210 is arranged to face the inner boundary 315 of the side trim.

A discharge port 102 is formed between the grille side boundary 325 and the side trim inner boundary 315 , and the blade module 200 is arranged in each of the discharge ports 102 .

The inner edge 210a of the blade 210 of the blade module 200 is arranged to face the grille side boundary 325, and the outer edge 210b of the blade 210 is arranged to face the inner boundary 315 of the side trim.

In addition, the cord fixing portion 329 for fixing the other end of the cord protrudes upward from the grill main body portion 324 . Four cord fixing portions 329 are arranged and correspond to the respective cords 511 , 512 , 521 , and 522 .

The cord fixing portion that fixes the other end of the 1-1 cord 511 is defined as the first cord fixing portion 329-1, and the cord fixing portion that fixes the other end of the 1-2 cord 512 is defined as The second cord fixing portion 329-2, the cord fixing portion that fixes the other end of the 2-1 cord 521 is defined as the third cord fixing portion 329-3, and the other end of the 2-2 cord 522 is defined as the third cord fixing portion 329-3. The fixed wire-fixing portion is defined as a fourth wire-fixing portion 329-4.

When viewed from the top or bottom, the first wire rope fixing portion and the second wire rope fixing portion are symmetrical with respect to the direction of the motor shaft 541 of the first unit. When viewed from the top or bottom, the third wire rope fixing portion and the fourth wire rope fixing portion are symmetrical with respect to the direction of the motor shaft 541 of the second unit.

The arrangement direction of the first wire rope fixing part and the second wire rope fixing part is parallel to the arranging direction of the third wire rope fixing part and the fourth wire rope fixing part.

In this embodiment, the first wire rope fixing portion is located on the side of the first grid corner portion 327-1, the second wire rope fixing portion is located on the side of the second grid corner portion 327-2, and the third wire rope fixing portion is located on the side of the second grid corner portion 327-2. On the side of the corner portion 327-3 of the three grids, the fourth wire rope fixing portion is located on the side of the corner portion 327-4 of the fourth grid.

The cord fixing portion 329 is arranged outside the pre-filter 330 and is arranged on the grill body 322 . Each cord fixing portion protrudes upward from the upper side of the grill body 322 .

The filter coupling part 331 is a structural element for fixing the pre-filter 330 . Since the pre-filter 330 needs to be cleaned periodically, the pre-filter 330 is assembled to the filter joint part 331 in a detachable manner.

In this embodiment, the filter coupling part 331 has a structure surrounding the edge of the pre-filter 330 . The filter coupling portion 331 may be arranged outside the grille 323, and may be arranged along the edge of the suction port 101 or the suction portion.

The filter coupling portion 331 protrudes upward from the upper side of the grill body portion 324 , and forms a space capable of accommodating the pre-filter 330 between the filter coupling portion 331 and the upper side of the grill body portion 324 .

<Configuration of pre-filter>

The pre-filter 330 is arranged on the upper side of the suction grill 320 . The pre-filter 330 filters large-volume impurities from the air sucked in through the suction port 101 .

The pre-filter 330 is arranged on the upper side of the grille 323 and covers the entire suction part.

The pre-filter 330 is detachably assembled to the suction grill 320, and descends together with the suction grill 320 when the suction grill 320 descends.

<Configuration of lifter>

The lifter 500 can raise or lower the suction grill 320 by simultaneously winding or unwinding the four wires 511 , 512 , 521 , 522 . The user can operate the lifter 500 by inputting an operation signal to the control unit.

The lifter 500 is controlled by the control unit. The lifter 500 supports the suction grill 320 at four points. The lifter 500 supports the suction grill 320 through four wires 511 , 512 , 521 , 522 , and makes the suction grill 320 ascend or descend by winding or unwinding the wires.

The lifter 500 is operated to simultaneously wind or unwind the four wire ropes 511, 512, 521, 522, whereby the suction grill 320 can be raised or lowered in a horizontal state.

The lifter 500 is composed of a first unit 510 and a second unit 520 .

The first unit 510 can simultaneously wind or unwind a pair of wire ropes, and the second unit 520 can also wind or unwind a pair of wire ropes at the same time.

The pair of wires connected to the first unit 510 is defined as the 1-1 wire 511 and the 1-2 wire 512, and the pair of wires connected to the second unit 520 is defined as the 2-1 wire The wire 521 and the 2-2 wire 522.

The first unit 510 can simultaneously wind or unwind the 1-1 wire 511 and the 1-2 wire 512 . The second unit 520 can simultaneously wind or unwind the 2-1 wire 521 and the 2-2 wire 522 .

One end (upper end) of the 1-1 cord 511 and one end (upper end) of the 1-2 cord 512 are coupled to the first unit 510 , and the other end (lower end) of the 1-1 cord 511 ) and the other end (lower end) of the 1st-2nd wire 512 are fixed to each wire fixing part 329 arranged on one side of the suction grill 320 .

One end (upper end) of the 2-1 cord 521 and one end (upper end) of the 2-2 cord 522 are coupled to the second unit 520, and the other end (lower end) of the 2-1 cord 521 ) and the other end (lower end) of the 2-2 wire 522 are fixed to each wire fixing portion 329 arranged on the other side of the suction grille.

When the 1-1 wire 511 and the 1-2 wire 512 are arranged on the left side, the 2-1 wire 521 and the 2-2 wire 522 are arranged on the right side. On the other hand, when the 1-1 wire 511 and the 1-2 wire 512 are arranged on the front side, the 2-1 wire 521 and the 2-2 wire 522 are arranged on the front side. rear side.

Referring to FIG. 5 , the 1-1 cord 511 and the 1-2 cord 512 are located on the left side and are arranged in the front-rear direction, and the 2-1 cord 521 and the 2-2 cord 522 are located on the right side, and Arranged in the front-rear direction.

When viewed from the bottom or plan view, the 1-1 cords 511 and 1-2 cords 512 are arranged in a row, and the 2-1 cords 521 and 2-2 cords 522 are also arranged in a row configuration.

The 1-1 wire 511 and the 2-1 wire 521 are arranged in parallel, and the 1-2 wire 512 and the 2-2 wire 522 are arranged in parallel.

The first unit 510 and the second unit 520 are arranged symmetrically with each other. When the first unit 510 is arranged on the left side of the housing 100 , the second unit 520 is arranged on the right side of the housing 100 . Similarly, when the first unit 510 is arranged on the front side of the casing 100 , the second unit 520 is arranged on the rear side of the casing 100 .

In this embodiment, the first unit 510 is arranged on the left side of the housing 100 , and the second unit 520 is arranged on the right side of the housing 100 .

The lifter 500 provides a structure for raising or lowering the suction grille 320 in a horizontal state by simultaneously winding or unwinding four wire ropes at the same time.

Since the structural elements of the first unit 510 and the second unit 520 are the same, the first unit 510 is taken as an example to describe the structure thereof.

<Configuration of Unit 1>

The first unit 510 includes: a roller 530, one end of the 1-1 wire 511 and one end of the 1-2 wire 512 are respectively fixed on the roller 530; a roller motor 540 is used to rotate the Roller 530; first roll box 550, the 1-1 wire rope 511 is arranged through the first roll box 550, when winding or unwinding the 1-1 wire rope 511, the first wire rope 511 A roller box 550 is used to align the position of the 1-1 wire rope 511; the second roller box 560, the 1-2 wire rope 512 is arranged through the second roller box 560, when winding or unwinding When winding the 1-2 wire rope 512, the second roller box 560 is used for aligning the position of the 1-2 wire rope 512; amount of rotation.

Since the structural elements of the first unit and the structural elements of the second unit are the same, the same reference numerals will be used. However, when it is necessary to distinguish between the structural elements of the first unit and the structural elements of the second unit, the structural elements of the first unit are distinguished as "first", and the structural elements of the second unit are called "first". as "second". For example, when it is necessary to distinguish between the roller motor of the first unit and the roller motor of the second unit, the roller motor of the first unit is called "the first roller motor", and the The two-unit roller motor is called "second roller motor", which will apply equally to the rest of the structural elements.

The first unit 510 may be configured on one of the front main body 310 , the cabinet housing 110 , and the bell mouth 142 .

The roller 530 , the roller motor 540 , the first roller box 550 , and the second roller box 560 constituting the first unit 510 may be arranged in one of the front main body 310 , the cabinet case 110 , and the bell mouth 142 .

In this embodiment, for easy replacement and repair, a unit case 590 forming the appearance of the first unit 510 is disposed. Inside the unit casing 590 are arranged the roller 530 , the roller motor 540 , the first roller box 550 , the second roller box 560 , and the rotation amount sensing device 600 .

The unit case 590 may be arranged on one of the front main body 310 , the cabinet case 110 , and the bell mouth 142 . In this embodiment, the unit casing 590 is disposed on the bell mouth 142 . The unit case 590 is arranged on the upper side of the suction grill 320 .

When the unit housing needs to be distinguished, the unit housing configured on the first unit is defined as the first unit housing, and the unit housing configured on the second unit is defined as the second unit housing.

In addition, the plurality of roll boxes arranged inside the first unit casing are defined as the 1-1 roll box and the 1-2 roll box, and the plurality of roll boxes arranged inside the second unit casing are defined as the second roll box -1 roll box and 2-2 roll box.

The 1-1 roll box is located in the 1-1 direction 511a based on the first roll, and the 1-2 roll box is located in the 1-2 direction 512a based on the first roll.

The direction of the 1-1 wire 511 arranged between the first roll and the 1-1 roll box is defined as the 1-1 direction 511a, and the direction of the 1-1 wire 511 arranged between the first roll and the 1-2 roll box is defined as the 1-1 direction 511a. The direction of the 1-2 wire 512 is defined as the 1-2 direction 512a.

In the present embodiment, the 1-1 direction is arranged so as to face the first wire guide 701 described later, and the 1-2 direction is arranged to face the second wire guide 702 .

When the 1-1 direction is positioned on the upper side with reference to the rotation center of the roll, the 1-2 direction is positioned on the lower side. Conversely, when the 1-1 direction is located on the lower side with reference to the rotation center of the roll, the 1-2 direction is located on the upper side.

The 1-1 direction and the 1-2 direction respectively form tangent lines to the outer surface of the roller.

That is, the 1-1 direction is arranged along the tangential direction with respect to the roll, and the 1-2 direction is also arranged along the tangential direction with respect to the outer surface of the roll.

Similarly, the direction of the 2-1 wire 521 arranged between the second roll and the 2-1 roll box is defined as the 2-1 direction, and the direction between the second roll and the 2-2 roll box is defined as the 2-1 direction. The direction of the arranged 2-2 wire 522 is defined as the 2-2 direction.

The 2-1 roll box is located in the 2-1 direction based on the second roll, and the 2-2 roll box is located in the 2-2 direction based on the second roll.

In this example, the 2-1 direction is arranged so as to face the third wire guide 703 described later, and the 2-2 direction is arranged to face the fourth wire guide 704 .

In this embodiment, the 1-1 direction and the 1-2 direction are arranged to face different directions from each other, and when viewed from the side of the first unit, the 1-1 direction and the 1-2 direction are The directions cross each other.

When viewing the first unit from a plan view, the 1-1 direction and the 1-2 direction may cross or be parallel to each other depending on the winding position of the 1-1 wire 511 and the 1-2 wire 512 .

Similarly, the 2-1 direction and the 2-2 direction are arranged so as to face in different directions from each other, and the 2-1 direction and the 2-2 direction intersect with each other.

The 2-1 direction and the 2-2 direction respectively form tangent lines to the outer surface of the roller.

That is, the 2-1 direction is arranged along the tangential direction with respect to the roll, and the 2-2 direction is also arranged along the tangential direction with respect to the outer surface of the roll.

<Constitution of rollers>

The drum 530 of the first unit 510 includes: a drum main body 535, which is formed in a cylindrical shape, and ends of the 1-1 wire 511 and the 1-2 wire 512 are respectively fixed to the drum main body 535; the first part 533 , protruding outward in the radial direction of the drum main body 535 for dividing the first area 531 where the 1-1 wire 511 is wound and the second area 531 where the 1-2 wire 512 is wound. The second area 532; the 1-1 partition 534 is arranged on the drum main body 535 to prevent the 1-1 wire 511 wound in the first area 531 from escaping to the outside of the drum main body 535 The 1-2 separator 536 is arranged on the roller body 535 to prevent the 1-2 wire 512 wound in the second area 532 from escaping to the outside of the roller body 535 .

The 1-1 wire 511 is wound around the first area 531 and forms a tangent to the outer surface of the first area 531 . The 1-2 wires 512 are wound around the second area 532 and form a tangent to the outer surface of the second area 532 .

The 1-1 direction is arranged in a tangential direction to the outer surface of the first region 531 . The 1-2 direction is arranged so as to be tangential to the outer surface of the second region 532 .

The said 1-1 direction is arrange|positioned so that it may face the end roll 554 of the 1-1 roll box 550 mentioned later, and the said 1-2 direction may be arrange|positioned so that it may face the end roll 564 of the 1-2 roll box 560. .

The 1-1 direction may be the tangential direction of the first region 531 and the end roller 554 . The 1-2 direction may be a tangential direction of the second region 532 and the end roller 564 .

The drum 530 of the second unit 520 includes: a drum main body 535 formed in a cylindrical shape, and one ends of the 2-1 wire 521 and the 2-2 wire 522 are respectively fixed to the drum main body 535; the second The portion 533 is arranged to protrude outward in the radial direction of the drum body 535, and is used to divide the first area 531 where the 2-1 wire 521 is wound and the area where the 2-2 wire 522 is wound. The second area 532; the 2-1 separator (not shown) is arranged on the roller main body 535, and is used to prevent the 2-1 wire 521 wound in the first area 531 from going to the roller. The outside of the drum main body 535 escapes; the 2-2 partition (not shown) is arranged on the drum main body 535 to prevent the 2-2 wire 512 wound in the second area 532 from entering the The outer side of the roller main body 535 escapes.

The 2-1 wire 521 is wound around the first area 531 and forms a tangent to the outer surface of the first area 531 . The 2-2 wire 522 is wound around the second area 532 and forms a tangent to the outer surface of the second area 532 .

The 2-1 direction is arranged in a tangential direction to the outer surface of the first region 531 . The 2-2 direction is arranged in a tangential direction to the outer surface of the second region 532 .

The 2-1 direction is arranged so as to face the end roll 554 of the 2-1 roll box 550 described later, and the 2-2 direction is arranged so as to face the end roll 564 of the 2-2 roll box 560 .

The 2-1st direction may be the tangential direction of the first region 531 and the end roller 554 . The 2-2 direction may be a tangential direction of the second region 532 and the end roller 564 .

The 2-1 divider is the same structural element as the 1-1 divider 534, the 2-2 divider is the same structural element as the 1-2 divider 536, and the second part is the first part the same structural elements.

The roller main body 535 is formed in a cylindrical shape. Different from this embodiment, the roller body 535 can be formed in various forms. Grooves may be formed on the outer peripheral surface of the drum main body 535 to facilitate alignment at the time of winding the cord. The groove may be formed in a spiral shape along the outer peripheral surface of the roller body 535 .

The portion 533 is arranged in the middle with respect to the longitudinal direction of the roller body 535 . The portion 533 is formed to protrude outward in the radial direction of the roller body 535 . In this embodiment, the portion 533 is formed in a ring shape, and the center of the portion 533 and the shaft center C of the roller body 535 are arranged on the same axis. The ring shape is arranged to protrude in the radial direction along the outer peripheral surface of the roller body 535 .

Different from this embodiment, the portion 533 may be formed in an arc shape. The part 533 may be separated into a plurality of parts and arranged along the outer peripheral surface of the roller body 535 .

The shaft center C of the roller main body 535 intersects the 1-1 wire 511 or the 1-2 wire 512 . The 1-1 wire 511 or the 1-2 wire 512 is wound in a spiral form with the shaft center C as a reference.

The portion 533 divides the outer peripheral surface of the roller body 535 into a first region 531 and a second region 532 . The first area 531 and the second area 532 are arranged along the longitudinal direction of the roll. In this embodiment, the first area 531 is arranged close to the roller motor 540 , and the 1-1 partition 534 for forming the first area 531 is arranged close to the roller motor 540 .

The 1-1 wire 511 is located in the first area 531 , and is wound or unwound in the first area 531 . The 1-2 wires 512 are located in the second area 532 and are wound or unwound in the second area 532 .

Said portion 533 prevents the string from crossing and winding out of the corresponding area.

The 1-1 partition 534 prevents the 1-1 wire 511 from escaping to the outside of the first region 531 . The 1-2 partition 536 prevents the 1-2 wire 512 from escaping to the outside of the second region 532 .

The said 1-1 partition 534 is protruded to the radial direction outer side of the said roller main body 535, and is arrange|positioned. The 1st-2nd partition 536 is protruded to the radial direction outer side of the said roll main body 535, and is arrange|positioned.

In this embodiment, the 1-1 partition 534 and the 1-2 partition 536 are formed in a ring shape formed along the outer peripheral surface of the roller main body 535 . The ring shapes of the 1-1 separator 534 and the 1-2 separator 536 are arranged to protrude in the radial direction along the outer peripheral surface of the roller body 535 .

One end of the 1-1 wire 511 is fixed to the first area 531 , and one end of the 1-2 wire 512 is fixed to the second area 532 .

One end of the 1-1st wire 511 may be fixed to one of the roller main body 535 , the first portion 533 or the 1-1st partition 534 for forming the first region 531 .

In this embodiment, one end of the 1-1 wire 511 is fixed to the outer peripheral surface of the roller main body 535 in the first area 531 . In addition, in this embodiment, one end of the 1st-2nd wire 512 is fixed to the outer peripheral surface of the roller main body 535 in the second area 532 .

The 1-1 wire 511 and the 1-2 wire 512 are wound along the outer peripheral surface of the drum main body 535 . The 1-1 wire 511 and the 1-2 wire 512 are wound or unwound in the same direction. In this embodiment, when the drum 530 rotates clockwise with respect to the shaft center C of the drum main body 535, the 1-1 wire 511 and the 1-2 wire 512 are wound. When the drum 530 rotates counterclockwise with respect to the shaft center C of the drum main body 535, the 1-1 wire 511 and the 1-2 wire 512 are unwound.

In order to sense the rotation amount of the drum 530 , some structural elements of the rotation amount sensing device 600 may be disposed on the drum 530 . A rotation sensing factor 601 is configured to sense the rotation amount of the roller 530 . In this embodiment, the rotation sensing factors 601 are arranged at equal intervals in the circumferential direction with the axis center C of the roller 530 as a reference. The rotation sensing factor 601 may be arranged on at least one of the 1-1 partition 534 or the 1-2 partition 536 .

<Construction of roller motor>

In the roller motor 540 , the motor shaft 541 is assembled to the roller 530 . The motor shaft 541 and the shaft center C of the roller 530 are arranged in a row. In this embodiment, the roller motor 540 uses a stepping motor.

Different from the present embodiment, gears may be provided in order to provide the rotational force of the roller motor 540 to the roller 530 . The rotation amount and rotation speed of the roller 530 can be controlled more precisely through the combination of the gears.

The axial center C intersects the arrangement direction of the 1-1 wire 511 and the 1-2 wire 512 . In this embodiment, the axis center C is orthogonal to the arrangement direction of the 1-1 wire 511 and the 1-2 wire 512 .

In addition, one end of the 1-1 wire 511 and one end of the 1-2 wire 512 are symmetrical with respect to the axis center C described above.

In order to simultaneously wind or unwind the 1-1 wire 511 and the 1-2 wire 512, the 1-1 wire 511 is wound on the upper side of the drum main body 535, and the 1-2 wire 512 It is wound to the lower side surface of the roller main body 535 .

<Constitution of roll box>

Inside the unit casing 590 of the first unit 510, the first roll box 550 and the second roll box 560 are arranged. The first roll box 550 and the second roll box 560 are also arranged inside the unit casing 590 of the second unit 520 .

When the 1-1 wire 511 is wound or unwound in the first area 531 of the drum 530 , the first roll box 550 aligns the 1-1 wire 511 on the drum main body 535 in sequence .

When the 1-1 wire 511 is wound without forming a uniform layer on the outer peripheral surface of the drum 530, the length of the 1-2 wire 512 is formed according to the thickness of the wire. Difference.

When the 1-1 cord 511 wound in the first region 531 and the 1-2 cord 512 wound in the second region 532 form an uneven layer, the suction grill 320 is inclined with respect to the horizontal direction.

When the 1-2 cords 512 are wound or unwound in the second area 532 of the drum 530, the second roll box 560 wraps the 1-2 cords 512 on the drum main body 535 in sequence to align.

The first roll box 550 and the second roll box 560 are arranged symmetrically on the basis of the intersection of the portion 533 and the central axis C when viewed from above.

Since the first roll box 550 and the second roll box 560 have the same structural elements, the first roll box 550 will be used as an example for description.

The first roller box 550 includes: a box body 555, which is fixed on the unit casing 590; a starting roller 551 is arranged inside the box body 555, and is in contact with the 1-1 wire rope 511, and is in the The 1-1 wire rope 511 rotates by friction during the movement, and is arranged farthest from the roller 530; the end roller 554 is arranged inside the box 555, and is connected to the 1-1 wire rope 511 is in contact, and the 1-1 wire 511 is rotated by friction when moving, and is arranged closest to the roller 530; the second roller 552 is arranged inside the box 555 and is connected to the roller 530. The 1-1st wire 511 is in contact with and rotates by friction when the 1-1st wire 511 moves, and is arranged between the start roller 551 and the end roller 554, and the 1-1st wire 511 is used for rotation. The tension of the wire rope 511 can move in the horizontal direction; the third roller 553 is arranged inside the box 555 and is in contact with the 1-1 wire rope 511. When moving, it rotates by friction, is arranged between the second roller 552 and the end roller 554, and can move in the horizontal direction by the tension of the first-1 wire 511.

In this embodiment, the second roller 552 and the third roller 553 are defined as conveying rollers. In this embodiment, the second roller 552 and the third roller 553 are used as conveyance rollers, but unlike this embodiment, only one conveyance roller may be used.

For the roller 530, the starting roller 551 is arranged at the farthest position, the second roller 552 is arranged at the next farthest position, the third roller 553 is arranged at the second farthest position, and the end roller 554 is closest to the roller layout.

The start roller 551, the second roller 552, the third roller 553, and the end roller 554 are assembled on the respective roller shafts 551a, 552a, 553a, and 554a, and can rotate around the respective roller shafts 551a, 552a, 553a, and 554a. . The respective roller shafts 551a, 552a, 553a, and 554a are arranged along the horizontal direction.

The starting roller 551 is rotatably assembled to the first roller shaft 551a, the second roller 552 is rotatably assembled to the second roller shaft 552a, and the third roller 553 is rotatably assembled On the third roller shaft 553a, the end roller 554 is rotatably assembled to the fourth roller shaft 554a. In this embodiment, the second roller 552a and the third roller 553a are conveying rollers.

At least one of the starting rollers 551 , the second rollers 552 , the third rollers 553 and the ending rollers 554 may be rotated in the original position, and the remaining rollers move and rotate along the roller shafts.

In this embodiment, the starting roller 551 is a fixed roller that does not move along the roller axis. In the present embodiment, the start roller 551 rotates in-situ around the roller shaft 551a in a state of being assembled to the roller shaft 551a.

The second roller 552, the third roller 553, and the end roller 554 are moving rollers that can move in the horizontal direction along with the respective roller axes. In the present embodiment, the second roller 552, the third roller 553, and the end roller 554 are rotatable while being assembled to the respective roller shafts 552a, 553a, and 554a. In addition, when a force (for example, the tension of a string) is applied to the second roller 552, the third roller 553, and the end roller 554, it can move with each roller shaft 552a, 553a, and 554a. The rollers 552, 553, and 554 can move relative to each other.

In this embodiment, the 1-1 wire 511 is in contact with the lower side of the start roller 551 and is in contact with the upper side of the end roller 554 . Unlike the present embodiment, the surface of the 1-1 wire 511 in contact with each roller can be changed.

In this embodiment, since the 1-1 wire 511 surrounds the upper side of the guide 750, and the 1-1 wire is changed from the guide 750 to the lower side in the vertical direction, the 1-1 wire The rope 511 is preferably configured as a structure surrounding the underside of the starting roller 551 .

In the configuration as in the present embodiment, the 1-1 wire 511 presses the guide 750 downward and the start roller 551 upward, so it is advantageous to hold the 1-1 wire 750 tension.

In this embodiment, each wire presses the guide and the starting roller in different directions from each other. The individual strands are supported on the guides and starting rollers in a staggered manner. Each wire rope is arranged diagonally with respect to the guide and the start roller.

A part of the starting roller 551 protrudes to the outside of the box body 555 . The 1-1 wire 511 is preferably arranged so as to be horizontal or more upward than the horizontal toward the guide 750 .

12 , when viewed from the side of the casing, the 1-1st wire 511 from the start roller 551 toward the first wire guide 701 is 1-2 from the start roller 561 toward the second wire guide 702 The wire rope 512 is symmetrical with respect to the axial center C of the drum 530 . When viewed from above, the 1-1 wire 511 from the start roller 551 toward the first wire guide 701 and the 1-2 wire 512 from the start roller 561 toward the second wire guide 702 are in a row This is possible because the starting rollers 551 and 561 are fixed rollers.

Since the arrangement of the 2-1 wire 521 and the 2-2 wire 522 is also the same as that of the 1-1 wire 511 and the 1-2 wire 512, additional description will be omitted.

By the relative movement of the second roller 552 , the third roller 553 , and the end roller 554 , the 1-1 wire 511 is aligned in a row on the roller 530 .

A wire guard 551b is arranged at a predetermined distance from the start roller 551 . The 1-1st wire 511 is arranged between the wire guard 551b and the start roller 551 . The cord guard 551b prevents the cord wound on the roller from escaping from the roller.

Wire guards 552b, 553b, and 554b are also arranged on the second roller 552, the third roller 553, and the end roller 554.

The starting roller 551 located on the outermost side is excluded from the movement in the axial direction, thereby preventing the movement of the wire in the axial direction. When the starting roller 551 located on the outer side moves with the roller shaft 551a, the height of the suction grille 320 may deviate, and the suction grille 320 may be shaken.

When winding or unwinding the wire, the starting roller 551 can rotate in the box 555 in place, and the second roller 552, the third roller 553 and the ending roller 554 move with each roller shaft.

The start roller 551, the second roller 552, the third roller 553, and the end roller 554 are arranged in a zigzag shape in the up-down direction.

The second roller 552 is arranged on the upper side of the starting roller 551 , and the third roller 553 is arranged on the lower side than the starting roller 551 with respect to the starting roller 551 . The end roller 554 is arranged at a position higher than the start roller 551 and the second roller 552 , and is arranged at a lower position than the third roller 553 .

In particular, the second roller 552a is located at the highest position, the third roller 553a is located at the lowest position, the start roller 551a is located at a higher position than the third roller 553a, and the end roller 554a is located at a higher position than the start roller. 551 higher.

The fourth roller shaft 554a is positioned above the central axis C, and the wire rope connecting the roller main body 535 is arranged so as to be inclined upward. By the relative arrangement of the fourth roller shaft 554a and the central axis C, tension can be formed on the wire rope.

In addition, in order to reduce the left-right width of the roll box 550, the start roll 551, the second roll 552, the third roll 553, and the end roll 554 are arranged so as to overlap in the vertical direction.

That is, the interval between the starting roller 551 and the third roller 553 is formed to be smaller than the diameter of the second roller 552 . Meanwhile, compared with the diameter of the third roller 553, the interval between the second roller 552 and the end roller 554 is formed to be smaller.

In this embodiment, the 1-1 line 511 surrounds the lower outer peripheral surface of the start roller 551 and surrounds the upper outer peripheral surface of the end roller 554 .

The 1-1 direction may be arranged in a tangential direction with respect to the outer surface of the first region 531 and the outer surface of the end roller 554 .

In addition, the second roll box 560 includes: a box body 565 fixed to the unit casing 590; a start roller 561 and a stop roller 564, which are arranged inside the box body 565, and the 1st-2nd wire rope 512 is in contact with and rotates by friction when the 1st-2nd wire rope 512 moves; the second roller 562 and the third roller 563 are arranged inside the box 565, and the 1st-2nd wire rope The ropes 512 are in contact with each other, and are rotated by friction when the 1st-2nd ropes 512 are moved, and can relatively move in the axial direction by the tension of the 1st-2nd ropes 512 .

The start roller 561, the second roller 562, the third roller 563, and the end roller 564 are assembled on the respective roller shafts 561a, 562a, 563a, and 564a, and the roller shafts 561a, 562a, 563a, and 564a can be used as centers. rotate.

The second roll box 560 is provided with respective wire guards 561b, 562b, 563b, and 564b spaced apart from the start roll 561, the second roll 562, the third roll 563, and the end roll 564 at predetermined intervals.

The first roll box 550 and the second roll box 560 are arranged symmetrically on the basis of the roll 530 . In particular, the first roll box 550 and the second roll box 560 are arranged symmetrically with respect to the shaft center C.

With the shaft center C as a reference, start rollers 551 and 561 may be arranged on the farthest side, and end rollers 554 and 564 may be arranged on the closest side.

In this embodiment, the 1-2 direction may be arranged in a tangential direction with respect to the outer surface of the second region 532 and the outer surface of the termination roller 564 .

In the present embodiment, one end of the 1-1 wire 511 and one end of the 1-2 wire 512 are located on opposite sides of each other with respect to the axis center of the drum 530 . By the rotation of the drum 530, the 1-1 wire 511 and the 1-2 wire 512 are wound or unwound on the drum main body 535 in the same direction.

The unit case 590 is formed in a box shape, and a first hole 591 and a second hole 592 are formed on the side surface.

The first hole 591 is arranged on one side of the unit casing 590 , and the second hole 592 is arranged on the other side of the unit casing 590 . For example, in the case where the first hole 591 is formed on the left side of the unit case 590 , the second hole 592 is formed on the right side of the unit case 590 .

The 1-1 wire 511 and the 1-2 wire 512 penetrate the unit case 590 in the horizontal direction.

The 1-1 wire 511 penetrates the first hole 591 of the first unit case 590 . The 1st hole 591 of the 1st unit case 590 is arrange|positioned so that the 1st wire guide 701 mentioned later may be faced.

The 1st-2nd wire 512 penetrates the second hole 592 of the first unit case 590 . The second hole 592 of the first unit case 590 is arranged so as to face a second wire guide 702 to be described later.

The 2-1 wire 521 penetrates the first hole 591 of the second unit case 590 . The 1st hole 591 of the 1st unit case 590 is arrange|positioned so that the 3rd wire guide 701 mentioned later may be faced.

The 2-2 wire 522 penetrates the second hole 592 of the second unit case 590 . The second hole 592 of the second unit case 590 is arranged so as to face a fourth wire guide 702 to be described later.

<Configuration of the cord guide>

The front body 310 is provided with a wire guide 700 that supports the wire when the lifter 500 is used to wind or unwind the wire. Four wire guides 700 are arranged and correspond to the wires 511 , 512 , 521 , and 522 .

The wire guide corresponding to the 1-1 wire 511 is defined as the first wire guide 701, the wire guide corresponding to the 1-2 wire 512 is defined as the second wire guide 702, and the The wire guide corresponding to the 2-1 wire 521 is defined as the third wire guide 703 , and the wire guide corresponding to the 2-2 wire 522 is defined as the fourth wire guide 704 .

The first wire guide 701 and the second wire guide 702 are arranged to face each other with reference to the direction of the motor shaft 541 of the first drum motor. The third wire guide 703 and the fourth wire guide 704 are arranged to face each other with reference to the direction of the motor shaft 541 of the second drum motor.

The first wire guide 701, the second wire guide 702, the third wire guide 703, and the fourth wire guide 704 are all located at the same height.

When viewed from a top or bottom view, the first wire guide 701 and the second wire guide 702 are symmetrical with respect to the direction of the motor shaft 541 of the first unit. When viewed from the top or bottom, the third wire guide 703 and the fourth wire guide 704 are symmetrical with respect to the direction of the motor shaft 541 of the second unit.

The arrangement direction of the first wire guide 701 and the second wire guide 702 is parallel to the arrangement direction of the third wire guide 703 and the fourth wire guide 704 .

In this embodiment, the first cord guide 701 is located on the side of the first corner cover 316-1, the second cord guide 702 is located on the side of the second corner cover 316-2, and the third cord guide 703 is located on the third side of the corner cover 316-2. On the side of the corner cover 316-3, the fourth wire guide 704 is located on the side of the fourth corner cover 316-4.

In this embodiment, the wire guide 700 is arranged on the front main body 310 . The wire guide 700 protrudes from the front main body 310 to the lifter 500 side. Each wire guide 700 is arranged on the inner side surface 310 a of the front main body 310 . The wire guide 700 is located between the roll box 550 and the front body 310 . The wire guide 700 protrudes in the horizontal direction from the front main body 310 toward the roller box 550 .

The cord guide 700 is positioned above the suction grill 320 and positioned below the bell mouth 142 .

The wire rope guide 700 includes: a fixing block 710, which is arranged on the inner side surface 310a of the front main body 310 and protrudes toward the roller box 550; an assembling block 720, which is assembled with the fixing block 710; the guiding piece 750, which is arranged In the assembly block 720, the assembly block 720 is capable of rotating and supports the wire.

In the present embodiment, the wire guide 700 is composed of the fixing block 710 and the assembling block 720, but it may be composed of a block integrated into one, unlike the present embodiment. The single block may be produced integrally with the front main body 310 , or may be additionally produced and then assembled to the front main body 310 . However, when the block is made in one piece and integrally formed with the front main body 310, it is difficult to manufacture the shape of the assembly block as in the present embodiment by injection molding.

<Configuration of guide>

The guide 750 supports the wire. The guide 750 can rotate with the wire as it is being wound or unwound.

The guide 750 provides structure to receive the line and facilitate movement of the line. The guide 750 may be formed in various forms, but in this embodiment, it is formed in a disk shape.

The guide 750 includes: a guide main body 752 with a rotation center formed along the horizontal direction; a wire groove 754 arranged on the outer side of the guide main body 752 and formed concavely toward the rotation center, the wire The rope is inserted into the rope groove 754 and supported; the guide shaft 755 penetrates the rotation center of the guide main body 752 and is rotatably assembled to the assembly block 720 .

In the present embodiment, the guide body 752 is formed in a disk shape, and is arranged vertically in the up-down direction. The guide body 752 rotates in the vertical direction, and the rotation center thereof is formed in the horizontal direction. The outer side surface 752a of the guide body 752 is formed in a circular shape when viewed from the side.

The guide groove 754 is formed concavely from the outer surface of the guide main body 752 toward the rotation center. The guide groove 754 is formed in a ring shape along the outer surface of the guide main body 752 .

The string is inserted into the guide slot 754 and may use friction to form a frictional force with the guide body 752 . The guide body 752 can be rotated by friction between the wire and the guide body 752 .

A guide shaft hole 753 through which the guide shaft 755 passes is formed at the center of rotation of the guide body 752 . The direction in which the guide shaft hole 753 is formed and the direction in which the guide groove 754 is formed intersect.

In this embodiment, the guide shaft 755 and the guide main body 752 are separately fabricated and then assembled. Different from the present embodiment, the guide shaft 755 and the guide main body 752 can be made integrally.

<Configuration of fixed block>

In this embodiment, the fixed block 710 is composed of two. Different from this embodiment, the fixing block 710 can be made as one. In this embodiment, the fixing block 710 is made integrally with the front main body 310 . Different from the present embodiment, the fixing block 710 may be additionally fabricated and assembled on the front main body 310 .

The fixed block 710 is composed of a first fixed block 711 and a second fixed block 712 .

The first fixing block 711 and the second fixing block 712 are arranged along the horizontal direction and are symmetrical to the left and right. The first fixing block 711 and the second fixing block 712 are spaced apart from each other to form an insertion space 713 , and guides 750 are arranged in the insertion space 713 .

The load applied to the guide member 750 is supported by the first fixing block 711 and the second fixing block 712 . Since the first fixing block 711 and the second fixing block 712 are in the same form, the first fixing block 711 will be used as an example for description.

The first fixing block 711 includes: a fixing block body 730 ; a fastening hole 735 , which penetrates the fixing block body 730 in the up-down direction; The second insertion portion 732 constitutes the fixing block main body 730 and protrudes toward the lifter 500 side. , is inserted into the assembly block 720, and is mutually locked with the assembly block 720 in the up-down direction.

The first insertion portion 731 and the second insertion portion 732 are integrally formed. The upper side surfaces of the first insertion portion 731 and the second insertion portion 732 form a continuous plane. The lower side surfaces of the first insertion portion 731 and the second insertion portion 732 also form a continuous plane. That is, the upper side surface 711a and the lower side surface 711b of the first fixing block 711 are formed as flat surfaces, which are parallel to each other and arranged in the horizontal direction.

The first insertion portion 731 is arranged close to the insertion space 713 , and the second insertion portion 732 is arranged adjacent to the insertion space 713 .

The first insertion portion 731 and the second insertion portion 732 protrude along the horizontal direction and have different protruding lengths from each other. The first insertion portion 731 protrudes further toward the lifter 500 than the second insertion portion 732 . That is, the protruding length of the first insertion portion 731 is formed to be longer than the protruding length of the second insertion portion 732 .

In this embodiment, since the volume of the first insertion part 731 is larger than that of the second insertion part 732 , the fastening hole 735 is formed in the first insertion part 731 .

A surface protruding from the first insertion portion 731 toward the assembly block 720 is formed as a curved surface 731a. The curved surface 731 a is formed along the arrangement direction of the first insertion portion 731 and the second insertion portion 732 .

In the first fixing block 711, an inner side surface 711c forming the insertion space 713 and an outer side surface 711d away from the insertion space 713 are formed in parallel to each other. The inner side surface 711c and the outer side surface 711d are orthogonal to the upper side surface 711a.

The upper side surfaces 711a and 712a of the first fixing block 711 and the second fixing block 712 are arranged on the same plane, and the lower side surfaces 711b and 712b are also arranged on the same plane.

The insertion space 713 is formed between the inner side surfaces 711 c and 712 c of the first fixing block 711 and the second fixing block 712 . The inner side surfaces 711c and 712c of the first fixing block 711 and the second fixing block 712 are arranged so as to be parallel to each other with respect to the vertical direction. The outer side surfaces 711d and 712d of the first fixing block 711 and the second fixing block 712 are arranged so as to be parallel to each other with respect to the vertical direction.

The respective fastening holes 735 of the first fixing block 711 and the second fixing block 712 are parallel to each other with respect to the vertical direction.

A space 739 is formed between the first fixing block 711 and the inner side surface 310 a of the front main body 310 . A space 739 is also formed between the second fixing block 712 and the inner side surface 310 a of the front main body 310 . The spaces 739 are formed along the up-down direction and pass through the first fixing block 711 and the second fixing block 712 . The strength of the fixing block can be improved by the space. Deformation that may occur during the generation of the fixed block can be suppressed by the space 739 .

The space 739 forms a first insertion portion leg 736 connecting the first insertion portion 731 and the inner side surface 310a. The space 739 forms a second insertion portion leg 737 connecting the second insertion portion 732 and the inner side surface 310a.

<Configuration of assembly block>

The assembling block 720 has a structure surrounding the outer surface of the fixing block 710 . The fixing block 710 is inserted inside the assembly block 720 . The fixing block 710 and the assembling block 720 are assembled in the horizontal direction, and the fixing block 710 and the assembling block 720 are mutually locked in the vertical direction.

The assembly block 720 includes an assembly block main body 740, the guide member 750 is rotatably assembled on the assembly block main body 740, and a first block opening surface 721a and The second block opening surface 722a; the first insertion space 721 is formed inside the assembly block main body 740 and is recessed to the inside of the first block opening surface 721a, and the first fixing block 711 is inserted into the first block. The insertion space 721 ; the second insertion space 722 is formed inside the assembly block main body 740 and is recessed toward the inner side of the second block opening surface 721 a , and the second fixing block 712 is inserted into the second insertion space 722 ; a guide installation space 742, formed outside the assembly block body 740, between the first insertion space 721 and the second insertion space 722, into which the guide 750 is inserted; guide The shaft grooves 744 and 746 are formed on the outside of the assembly block main body 740 and support the rotating shaft of the guide member 750; the fastening hole 745 is formed through the inner and outer sides of the assembly block main body 740, and the fastening member is inserted into the assembly block main body 740. to the fastening hole 745.

In this embodiment, the first fixing block 711 is inserted into the first insertion space 721a, and the second fixing block 712 is inserted into the second insertion space 722a. The first insertion space 721 a and the second insertion space 722 a are open toward the inner side surface 310 a of the front main body 310 and protrude toward the lifter 500 .

Unlike the present embodiment, one insertion space may be formed instead of the first insertion space 721a and the second insertion space 722a. In the case where one insertion space is formed, the first fixing block and the second fixing block are inserted into one insertion space, and thus a loose space may occur.

Since the cord guide 700 is a structure for supporting the cord, it is desirable to minimize its loose spacing or sway. When the guide 750 shakes while supporting the wire, not only the operation noise is generated, but also the larger shaking occurs in the suction grill 320 supported by the wire.

The first insertion space 721a and the second insertion space 722a are formed along the horizontal direction. Only one side of the assembly block main body 740 is open, and the other side is closed.

A guide mounting space 742 and guide shaft grooves 744 and 746 are formed on the outer surface of the assembly block main body 740 .

The guide mounting space 742 is formed along the horizontal direction, and its front-to-rear width is narrower than its upper-lower thickness. The guide installation space 742 is formed by a first guide installation wall 742a, a second guide installation wall 742b, and a third guide installation wall 742c.

The first guide mounting wall 742a and the third guide mounting wall 742c are arranged to face each other, and the second guide mounting wall 742b connects the first guide mounting wall 742a and the third guide mounting wall 742c. The second guide mounting wall 742b intersects the first guide mounting wall 742a and the third guide mounting wall 742c, which are orthogonal in this embodiment.

The first guide mounting wall 742a and the third guide mounting wall 742c are formed to be parallel to each other, and the guide 750 is inserted between the first guide mounting wall 742a and the third guide mounting wall 742c. The interval between the first guide mounting wall 742 a and the third guide mounting wall 742 c is formed longer than the thickness of the guide 750 .

The interval between the first guide mounting wall 742 a and the third guide mounting wall 742 c is formed narrower than the insertion interval 713 between the first fixing block 711 and the second fixing block 712 .

The upper and lower lengths of the guide installation space 742 are formed to be smaller than the diameter of the guide 750 , and the guide 750 protrudes toward the upper and lower sides of the guide installation space 742 .

Although the first guide mounting wall 742a and the third guide mounting wall 742c are formed flat in the up-down direction, the second guide mounting wall 742b is not.

The upper side of the second guide mounting wall 742b may protrude toward the guide 750 side. In the present embodiment, the upper side of the second guide mounting wall 742b is formed with a separation preventing protrusion 743 that slowly protrudes toward the guide 750 side.

The separation preventing protrusion 743 is a structural element for preventing the guide body 752 from being unintentionally separated from the assembly block 720 . When it is necessary to distinguish and name, the anti-separation protrusion 743 is defined as the first anti-separation protrusion.

The first separation preventing protrusion 743 protrudes from the second guide mounting wall 742b toward the guide 750 side. The first separation preventing protrusions 743 are formed with a predetermined curvature, and are spaced apart from the outer side surface 752 a of the guide 750 by a predetermined interval.

The interval between the first separation preventing protrusion 743 and the outer side surface 752a of the guide 750 is formed to be smaller than the diameter of the wire, whereby the wire can be cut to escape from the wire groove 754 and be separated to the outside of the guide 750 . The wire provided in the guide groove 754 is located between the second guide mounting wall 742b and the wire groove 754 .

The center of curvature of at least a part of the first separation preventing protrusion 743 may be arranged at the center of rotation of the guide shaft 755 . The first separation preventing protrusion 743 is located above the rotation center of the guide shaft 755 .

When the guide shaft 755 is inserted into the guide shaft grooves 744 and 746 , the outer side surface 752 a of the guide body 752 may interfere with the first separation preventing protrusion 743 . When the guide shaft 755 is inserted into the guide shaft grooves 744 and 746 , the guide body 752 and the separation preventing protrusion 743 are assembled in an interference fit form. After the guide shaft 755 is assembled, the outer side surface 752a of the guide main body 752 and the separation preventing protrusion 743 are kept at a predetermined interval.

With the above-described configuration, when the operator unintentionally separates the guide 750, the guide shaft 755 is locked by the separation preventing protrusion 743 and is not separated.

In addition, the guide shaft grooves 744 and 746 are respectively arranged on both sides of the guide mounting space 742 . The first guide shaft groove 744 is arranged on the side of the first guide attachment wall 742a, and the second guide shaft groove 746 is arranged on the side of the third guide attachment wall 742c.

The formation direction of the first guide shaft groove 744 and the second guide shaft groove 746 is orthogonal to the formation direction of the guide mounting space 742 . The first guide shaft groove 744 and the second guide shaft groove 746 are symmetrical with respect to the guide installation space 742 .

The first guide shaft groove 744 and the second guide shaft groove 746 are recessed from the upper side of the assembly block main body 740 to the lower side.

Since the shape of the second guide shaft groove 746 is symmetrical with the first guide shaft groove 744 , the first guide shaft groove 744 will be used as an example for description.

The guide shaft grooves 744 and 746 include a first shaft wall 744a, a second shaft wall 744b and a third shaft wall 744c.

The first shaft wall 744a and the third shaft wall 744c are formed to be parallel to each other. The guide shaft 755 of the guide 750 is inserted between the first shaft wall 744a and the third shaft wall 744c. The interval between the first shaft wall 744 a and the third shaft wall 744 c is formed wider than the diameter of the guide shaft 755 . The guide shaft 755 can rotate between the first shaft wall 744a and the third shaft wall 744c.

Separation prevention projections 747 for preventing separation of the guide shafts 755 are provided. A structural element for preventing separation of the guide shaft 755 from the guide shaft grooves 744 , 746 is defined as a second separation preventing protrusion.

In this embodiment, the second separation preventing protrusions 747 are arranged at two positions. The second separation preventing protrusion 747 includes: a 2-1 separation preventing protrusion 747a, which protrudes from the first shaft wall 744a toward the third shaft wall 744c; and a 2-2 separation preventing protrusion 747c, which protrudes from the third shaft wall 744c. The shaft wall 744c protrudes toward the first shaft wall 744a.

Unlike the present embodiment, only one of the 2-1 separation preventing protrusions 747a or the 2-2 separation preventing protrusions 747c may be arranged.

The interval between the 2-1 separation preventing protrusions 747 a or the 2-2 separation preventing protrusions 747 c is formed to be smaller than the diameter of the guide shaft 755 . The 2-1 separation preventing protrusion 747 a and the 2-2 separation preventing protrusion 747 c are positioned above the rotation center of the guide shaft 755 .

The 2-1 separation preventing protrusions 747 a and the 2-2 separation preventing protrusions 747 c are in the form of surrounding a part of the outer side of the guide shaft 755 . The arrangement direction of the 2-1 separation preventing protrusions 747 a and the 2-2 separation preventing protrusions 747 c intersects the longitudinal direction of the guide shaft 755 .

The first separation preventing protrusion 743 and the second separation preventing protrusion 747 not only prevent the guide from being separated from the assembly block 720 , but also restrain the guide 750 from moving up and down.

During the operation of the lifter 500 , the first anti-separation protrusions 743 and the second anti-separation protrusions 747 restrict the shaking and movement of the guide member 750 , thereby enabling the operation of the guide member 750 to occur during the rotation of the guide member 750 . Noise is minimized.

Since the first separation preventing protrusion 743 and the second separation preventing protrusion 747 limit the shaking and movement of the guide member 750 , shaking of the suction grill 320 during the operation of the lifter 500 can also be minimized.

In this embodiment, the wire wraps around the upper side of the guide 750 and changes direction to the lower side. Therefore, since the load of the suction grille 320 is applied to the wire, the guide 750 is pressed downward. That is, since the guide 750 is pressed downward in the installed state or during operation, the guide does not escape from the guide installation space 742 and the guide shaft grooves 744 and 746 without an intentional operation by the operator. .

In this embodiment, in order to easily install the guide, it is divided into a fixed block and an assembly block. Unlike the present embodiment, a guide mounting structure may be formed on the fixing block and the guide may be mounted. For example, a guide installation space and a guide shaft groove may be formed in the fixed block.

However, when the guide mounting space and the guide shaft groove are formed by the fixed block, the structure of the injection mold becomes complicated, and it is difficult to manufacture.

<Arrangement of the cord fixing portion>

The wire wraps around the guide 750 and changes direction downward, and is fixed to the suction grill 320 .

One end of the wire rope is fixed to the roller main body 535 of the lifter 500 , and the other end is fixed to the upper side of the suction grille 320 .

A cord fixing portion 329 to which the other end of the cord is fixed is formed on the suction grill 320 . The cord fixing portion 329 is arranged on the grill body 322 of the suction grill 320 . In particular, the wire fixing portion 329 is disposed on the grill body portion 324 in which the grille body 322 is not formed with the grille hole 321, and protrudes upward.

The cord fixing portion arranged under the first cord guide 701 is defined as a first cord fixing portion, the cord fixing portion arranged under the second cord guide 702 is defined as a second cord fixing portion, and the first cord fixing portion is defined as a second cord fixing portion. The cord fixing portion arranged under the three cord guides 703 is defined as a third cord fixing portion, and the cord fixing portion arranged under the fourth cord guide 701 is defined as a fourth cord fixing portion.

The cord extends downward in the vertical direction through the guide 750 and is fixed to the cord fixing portion 329 . The guide member 750 is located on the upper side of the grill main body portion 324 .

The wire guide 700 of this embodiment is located on the upper side of the suction grill 320 and is shielded by the suction grill 320 . In particular, since the cord guide 700 is located on the upper side of the grill body portion 324, it is not exposed to the user.

The wire guide 700 is arranged closer to the suction port 101 side than the blade module 200 . The blade module 200 has a structure capable of being separated from the front main body 310, and is prevented from interfering with the wire during the separation process of the blade module 200. FIG.

That is, the blade module 200 is positioned outside the four wires 511 , 512 , 521 , 522 , and the operator can separate the blade module 200 with the four wires 511 , 512 , 521 , 522 attached.

In addition, when repairing or replacing the lifter 500 , the operator can separate the four wires 511 , 512 , 521 , and 522 regardless of the blade module 200 in a state where the suction grille 320 is lowered.

<Configuration of Rotation Sensing Device>

The rotation sensing device 600 is used for sensing the rotation amount of the roller 530 . The rotation sensing device 600 needs to sense the rotation amount more accurately than the rotation number of the roller 530 .

In this embodiment, since it is necessary to simultaneously wind or unwind the 1-1 wire 511 and the 1-2 wire 512 of the first unit 510 and the 2-1 wire 521 and the second wire 521 of the second unit 520 - 2 cords 522, the amount of rotation of the drum 530 needs to be sensed accurately.

Since the rotation sensing devices 600 of the first unit 510 and the second unit 520 have the same structural elements, the rotation sensing device 600 disposed on the first unit 510 will be taken as an example for description.

The rotation sensing device 600 includes: a rotation sensing factor 601, which is arranged on the roller 530 and rotates together with the rotation of the roller 530; a sensor 602, which is separated from the rotation sensing factor 601 It is configured on the ground and used to sense the rotation amount of the rotation sensing factor 601 ; a printed circuit board 603 , and the sensor 602 is configured on the printed circuit board 603 .

The rotation sensing factor 601 is arranged at a position where the roller 530 rotates together with it when it rotates. The rotation sensing factor 601 may be arranged on at least one of the 1-1 partition 534 or the 1-2 partition 536 .

In this embodiment, a plurality of the rotation sensing factors 601 are arranged, and the plurality of rotation sensing factors 601 are arranged at equal intervals in the circumferential direction with the axis center C of the roller 530 as a reference.

In this embodiment, the rotation sensing factor 601 is arranged on the 1-1 partition 534 .

In this embodiment, the rotation sensing factor 601 has a sawtooth shape. The rotation sensing factor 601 is arranged to protrude outward in the radial direction based on the axis center C of the roller 530 .

The sensor 602 senses the rotation sensing factor 601 . In this embodiment, the sensor 602 may use an infrared sensor or a photoelectric sensor. The sensor 602 senses the signal generated by the rotation sensing factor 601 upon rotation of the drum 530 . For example, the sensor 602 generates infrared rays and receives the generated infrared rays. The sensor 602 can determine the rotation angle, the number of rotations, and the rotation speed of the roller 530 through the change of the infrared rays blocked by the rotation sensing factor 601 during the rotation of the roller 530 .

In order to effectively sense the rotation sensing factor 601 , a sensor mounting portion 604 is disposed protruding from the printed circuit board 603 .

The printed circuit board 603 is arranged in parallel with the axis center C. As shown in FIG. The printed circuit board 603 is provided on one of the roller motor 540 , the unit housing 590 or the roller box.

In this embodiment, the printed circuit board 603 is disposed on the roller motor 540 and is arranged in parallel with the motor shaft of the roller motor 540 .

The sensor mounting portion 604 is protruded from the printed circuit board 603 toward the roller 530 . In this embodiment, the sensor mounting portion 604 and the printed circuit board 603 are arranged in an orthogonal manner.

The sensor 602 is provided on the sensor mounting portion 604 . The sensor 602 includes a light-emitting portion for generating an infrared signal, and a light-receiving portion for receiving the infrared signal generated from the light-emitting portion. The operation mechanism of the sensor 602 is conventional to those skilled in the art, and thus a detailed description will be omitted.

However, the sensor mounting portion 604 and the printed circuit board 603 for effectively identifying the rotation sensing factor 601 have structural features.

The sensor mounting portion 604 is formed in the shape of a "匚" when viewed from a plan view.

The sensor mounting portion 604 is formed with a slot 605 through which the rotation sensing factor 601 can pass. When the roller 530 rotates, the rotation sensing factor 601 passes through the slot 605 , and the sensor 602 senses the rotation sensing factor 601 passing through the slot 605 .

The slot 605 is orthogonal to the axis center of the roller 530 . The slot 605 is located on the rotation plane of the rotation sensing factor 601 .

In this embodiment, since the rotation sensing factor 601 is disposed on the 1-1th partition member 534 , the slot 605 and at least a part of the 1-1st partition member 534 are located on the same plane.

The slot 605 is arranged in parallel with the 1-2 partition 536 and the portion 533 .

The sensor attachment portion 604 may be a structure to which only the sensor 602 is simply attached. Alternatively, the sensor mounting portion 604 may be formed of a printed circuit board capable of supplying power to the sensor 602 . Thereby, the printed circuit board 603 and the sensor mounting portion 604 can be electrically connected.

Unlike the present embodiment, a permanent magnet may be used as the rotation sensing factor, and the sensor uses a Hall sensor that senses the permanent magnet. When a permanent magnet is used as a rotation sensing factor, a plurality of permanent magnets may be arranged in the circumferential direction along the edge of the first-1 partition 534 .

Different from the present embodiment, the rotation sensing factor 601 may also be arranged on the 1st-2nd partition 536 or the part 533 .

Since the second unit 520 is constructed in the same way as the first unit 510, a detailed description will be omitted.

<Arrangement of vane modules and suction grilles>

When the suction grill 320 descends, the four blade modules 200 and the lifter 500 are exposed. The suction grille 320 is kept in a state of being in close contact with the front main body 310 because the respective cords are kept in a state of being pulled upward.

When the suction grille 320 moves downward, the four blade modules 200 and the lifter 500 which are shielded by the suction grille 320 will be exposed.

When the suction grill 320 is in close contact with the front main body 310 , only the blades 210 of the blade module 200 are exposed.

In addition, each wire guide is arranged on the upper side of the grille corners 327 constituting the suction grille 320 .

The suction grille 320 includes: a grille main body 322, which is communicated with the suction port 101 by a plurality of grille holes 321, and is formed into a quadrilateral shape; a first grille corner 327-1, a second grille The corners 327 - 2 , the third grid corners 327 - 3 , and the fourth grid corners 327 - 4 are formed to extend diagonally from the corners of the grid body 322 .

The vane module 200 includes: a first vane module 201, disposed outside each edge of the suction grille 320, and disposed on the first grille corner portion 327-1 and the second grille corner portion 327 Between -2; the second blade module 202 is arranged outside each edge of the suction grill 320, and is arranged at the second grille corner portion 327-2 and the third grille corner portion 327-3 The third blade module 203 is arranged outside each edge of the suction grille 320, and is arranged between the third grille corner portion 327-3 and the fourth grille corner portion 327-4 ; and the fourth blade module 204, which is arranged outside each edge of the suction grille 320, and is arranged between the fourth grille corner portion 327-4 and the first grille corner portion 327-1.

The blade module 200 arranged in the 12 o'clock direction is defined as the first blade module 201, the blade module 200 arranged in the 3 o'clock direction is defined as the second blade module 202, and the blade module 200 arranged in the 6 o'clock direction is defined as the third blade module 202 As for the blade module 203 , the blade module 200 arranged in the 9 o'clock direction is defined as the fourth blade module 204 .

The first blade module 201 , the second blade module 202 , the third blade module 203 , and the fourth blade module 204 are arranged at intervals of 90 degrees with reference to the center C of the front panel 300 .

The first blade module 201 and the third blade module 203 are arranged in a parallel manner, and the second blade module 202 and the fourth blade module 204 are arranged in a parallel manner.

Four side covers 314 are arranged on the front body 310 . For the convenience of description, the side cover 314 disposed outside the first blade module 201 is defined as the first side cover 314-1, and the side cover 314 disposed outside the second blade module 202 is defined as the first side cover 314-1 For the second side cover 314 - 2 , the side cover 314 arranged outside the third blade module 203 is defined as a third side cover 314 - 3 , and the side cover 314 arranged outside the fourth blade module 204 is defined as a third side cover 314 - 3 . The partial cover 314 is defined as the fourth side cover 314-4.

Each side cover 314 is assembled to the edge of the front frame 312 , is located on the lower side of the front frame 312 , is exposed to the outside, and is disposed outside each blade module 202 .

In addition, the corner cover 316 disposed between the first blade module 201 and the second blade module 202 is defined as a first corner cover 316-1. The corner cover 316 disposed between the second blade module 202 and the third blade module 203 is defined as a second corner cover 316-2. The corner cover 316 disposed between the third blade module 203 and the fourth blade module 204 is defined as a third corner cover 316-3. The corner cover 316 disposed between the fourth blade module 204 and the first blade module 201 is defined as a fourth corner cover 316-4.

The first corner cover 316-1 is assembled on the corner of the front frame 312, located on the lower side of the front frame 312, and located on the first side cover 314-1 and the second side cover 314-2 and exposed to the outside.

The second corner cover 316-2 is assembled on the corner of the front frame 312, located on the lower side of the front frame 312, and located on the second side cover 314-2 and the third side cover 314-3 and exposed to the outside.

The third corner cover 316-3 is assembled on the corner of the front frame 312, located on the lower side of the front frame 312, and located on the third side cover 314-1 and the fourth side cover 314-4 and exposed to the outside.

The fourth corner cover 316-4 is assembled on the corner of the front frame 312, located on the lower side of the front frame 312, and located on the fourth side cover 314-1 and the first side cover 314-1 and exposed to the outside.

The first corner cover 316-1 and the third corner cover 316-3 are arranged along the diagonal direction with reference to the center O of the front panel 300, and are arranged so as to face each other. The second corner cover 316-2 and the fourth corner cover 316-4 are arranged along the diagonal direction with reference to the center O of the front panel 300, and are arranged to face each other.

Virtual diagonal lines passing through the center of the front panel 300 are defined as P1 and P2. The P1 is a virtual line connecting the first corner cover 316-1 and the third corner cover 316-3, and the P2 is a virtual line connecting the second corner cover 316-2 and the fourth corner cover 316- 4 virtual wires connected to each other.

A first grille corner portion 327 - 1 , a second grille corner portion 327 - 2 , a third grille corner portion 327 - 3 and a fourth grille corner portion 327 - 1 extending toward the corner side are arranged on the suction panel 320 Grid edge corner 327-4.

Taking the grille corners as a reference, the first vane modules 201 are arranged outside each edge of the suction grille 320, and are arranged at the first grille corners 327-1 and the second grille between the corners 327-2 of the grid.

The second vane module 202 is arranged outside each edge of the suction grille, and is arranged between the second grille corner portion 327-2 and the third grille corner portion 327-3.

The third vane module 203 is arranged outside each edge of the suction grille, and is arranged between the third grille corner portion 327-3 and the fourth grille corner portion 327-4.

The fourth vane module 204 is disposed outside each edge of the suction grille, and is disposed between the fourth grille corner portion 327-4 and the first grille corner portion 327-1.

The first grille corner portion 327-1 extends toward the first corner cover 316-1, and forms a continuous surface with the outer surface of the first corner cover 316-1.

The grille corner boundary 326 of the first grille corner portion 327-1 is opposite to the inner boundary 317 of the corner decoration of the first corner cover 316-1, and forms an inner boundary gap 317a of the corner decoration .

The grille corner borders 326 of the remaining grille corner portions 327 and the inner borders 317 of the corner trims of the corner cover 316 are also opposite to each other, and form an inner border gap 317a of each corner trim.

The suction grille 320 is formed with four grille corner portions 327 arranged so as to face each corner cover 316 . Each of the grille corners 327 is disposed opposite to the corner covers 316 .

The grille corner portion 327 arranged to face the first corner cover 316-1 is defined as a first grille corner portion 327-1, and the grille corner portion 327 to be arranged to face the second corner cover 316-2 The grille corner portion 327 of 1 is defined as the second grille corner portion 327-2, and the grille corner portion 327 disposed opposite to the third corner cover 316-3 is defined as the third grille corner portion Section 327-3, the grille corner portion 327 disposed opposite to the fourth corner cover 316-4 is defined as a fourth grille corner portion 327-4.

The grille side boundary 325 forming the edge of the grille corner portion 327 and the corner trim inner boundary 317 forming the inner edge of the corner cover 316 are arranged to face each other, and the shapes of the curves also correspond to each other .

Likewise, the grille corner boundary 326 forming the edge of the grille corner portion 327 and the inner edge of the blade 210 are arranged to face each other, and the shapes of the curves also correspond to each other.

In addition, in this embodiment, a permanent magnet 318 and a magnetic fixing portion 328 are arranged to maintain the state in which the suction grille 320 is in close contact with the front main body 310 .

One of the permanent magnets 318 or the magnetic fixing parts 328 may be arranged on the front main body 310 , and the other of the magnetic fixing parts 328 or the permanent magnets 318 may be arranged on the upper and side surfaces of the grid corners 327 .

The permanent magnet 318 and the magnetic fixing portion 328 are located on the upper side of each grid corner portion 327 and are hidden by each grid corner portion 327 . Since the permanent magnets 318 and the magnetic fixing portions 328 are located outside each corner of the suction grille 320, the situation that the suction grille 320 and the front main body 310 are separated can be minimized.

When the suction grille 320 and the front main body 310 are separated from each other, a problem of a decrease in the internal pressure of the suction flow path 103 occurs.

In this embodiment, the permanent magnet 318 is disposed on the front main body 310 . Specifically, the permanent magnets are arranged on the corner frames 313 .

The magnetic fixing portion 328 is formed of a metal material that interacts with the permanent magnet 318 to form an attractive force. The magnetic fixing portion 328 is arranged on the upper side surface of the suction grill 320 . Specifically, the magnetic fixing portion 328 is disposed on the upper side surface of the corner portion 327 of the grille.

When the suction grill 320 moves upward and approaches the permanent magnet 318 , the permanent magnet 318 will pull the magnetic fixing portion 328 to fix the suction grill 320 . The magnetic force of the permanent magnet 318 is smaller than the self-weight of the suction grille 320 . Accordingly, when the suction grill 320 cannot be pulled by the lifter 500, the coupling of the permanent magnet 318 and the magnetic fixing portion 328 is released.

The permanent magnets 318 are arranged on the virtual diagonal lines P1 and P2 when viewed from above or below. The permanent magnet 318 is located inside the corner cover 316 .

One of the four permanent magnets 318 is disposed between the first module main body 410 of the first blade module 201 and the second module main body 420 of the fourth blade module 204 when viewed from above or below. The remaining three permanent magnets are also arranged between the first module body 410 and the second module body 420 of each blade module.

The permanent magnet 318 and the magnetic fixing portion 328 are located on the upper side of each grid corner portion 327 and are hidden by each grid corner portion 327 .

Hereinafter, the operation process when the suction grille according to the embodiment of the present invention is raised or lowered will be described in more detail.

<Installation status of suction grill>

The suction grille 320 may be lowered for filter cleaning, indoor unit interior repair, or the like. The suction grille 320 is supported by the four wires 511 , 512 , 521 , and 522 , and all the loads of the suction grille 320 are applied by the four wires 511 , 512 , 521 , and 522 .

The suction grille 320 is kept in close contact with the front main body 310 by four cords 511 , 512 , 521 , and 522 . That is, the suction grille 320 and the front main body 310 are not provided with an additional coupling structure for supporting.

Therefore, the user does not need to stand over a structure such as a chair and disassemble the suction grill 320 and the front main body 310 in order to separate the suction grill 320 . That is, when the four wire ropes 511, 512, 521, and 522 are unwound due to the operation of the lifter 500, the suction panel 320 is immediately lowered downward.

Moreover, since the suction grille 320 is supported only by the respective cords 511, 512, 521, and 522, the respective cords 511, 512, 521, and 522 are constantly under tension. When the suction grille 320 is supported by other structures, some of the wires 511 , 512 , 521 , and 522 may be in a slack state, and the lifter 500 cannot precisely control the wires 511 , 512 , 521 , 522 .

Since the wires 511 , 512 , 521 , and 522 of the present embodiment always support the load of the suction grille 320 , the entire length unwound to the outside of the lifter 500 is always kept in a tight state.

The first cord fixing portion 329 - 1 , the second cord fixing portion 329 - 2 , the third cord fixing portion 329 - 3 , and the fourth cord fixing portion 329 - 4 are located on each corner side of the suction panel 320 .

Since the four cord fixing portions are pulled upward by the cords and are in close contact with the front main body 310, the edge of the suction grill 320 can be closely contacted to the front main body 310, and the sagging of the suction grill 320 can be minimized change.

Since the respective cord guides 701 , 702 , 703 , and 704 are arranged for the four cords 511 , 512 , 521 , and 522 , the respective cords 511 , 512 , 521 , and 522 can be prevented from sagging.

A part of the load applied to each of the wire ropes 511 , 512 , 521 , and 522 can be distributed to each of the wire rope guides 701 , 702 , 703 , and 704 . In addition, since each of the cords 511, 512, 521, and 522 moves only along the cord grooves 754 arranged in the up-down direction, the horizontal movement of each of the cords 511, 512, 521, and 522 can be suppressed, thereby allowing the suction grill 320 to move. shaking is minimized.

<Descent process of suction grill>

When the user inputs an operation signal through a wireless remote controller or a wired remote controller with the suction grille 320 mounted on the cover panel 300, the control unit judges the inputted operation signal and lowers the suction grille 320.

When the suction grill 320 is lowered, the user can adjust the descending length of the suction grill 320 . In this embodiment, the suction grille 320 may descend stepwise by 1 m, 2 m, 3 m, and 4.5 m.

The control unit judges the input operation signal, operates the first unit 510 and the second unit 520 simultaneously, and determines the rotation amount of the roller motor 540 arranged on the first unit 510 and the second unit 520 .

When the roller motors 540 of the first unit 510 and the second unit 520 are operated at the same time, the rotation numbers and rotational speeds of the roller motors 540 need to be the same to prevent the suction grille 320 from tilting. For this reason, the respective roller motors 540 of the first unit 510 and the second unit 520 are preferably synchronized.

In this embodiment, when each roller motor 540 rotates each roller 530 in a first rotation direction (eg, counterclockwise), the suction grill 320 will descend. Conversely, when each roller motor 540 rotates each roller 530 in a second rotational direction (eg, clockwise) opposite to the first rotational direction, the suction grill 320 will rise.

In addition, when the roller motors 540 rotate the rollers 530 , the rotation amount sensing devices 600 disposed on the first unit 510 and the second unit 520 sense the rotation sensing factor 601 to sense the rollers 530 at least one of the amount of rotation or the speed of rotation.

The control unit monitors the data sensed in the rotation amount sensing device 600, and determines whether each roller 530 rotates at the same speed.

When the level difference between the two sides of the first unit 510 and the second unit 520 is staggered, for level difference correction, the number of counts of the rotation sensing factor 601 may be corrected in a stopped state. In this embodiment, the number of counts of the rotation sensing factor 601 is corrected at most three times, and the lifter 500 is driven.

In addition, the control unit monitors the descending or ascending process of the suction grill 320 by the lifter 500 through the rotation amount sensing device 600 .

When the rotation of any one of the rollers 530 is stopped during the ascending or descending process, the respective roller motors 540 are immediately stopped to cut off the possibility of the suction grill 320 being inclined or falling.

The four wire ropes 511 , 512 , 521 , and 522 are simultaneously unwound from each roller 530 by the operation of each roller motor 540 . Each of the wire ropes 511 , 512 , 521 , and 522 passes through the end roller 554 , the third roller 553 , the second roller 552 , and the start roller 551 . The respective wires 511 , 512 , 521 , and 522 extending in the horizontal direction from the respective unit casings 590 are turned toward the ground by the guides 750 located in the horizontal direction of the respective unit casings 590 .

Each wire 511 , 512 , 521 , and 522 can move to the lower side in the vertical direction of the guide 750 in a state of being supported on the upper side of each guide 750 . Through the above-mentioned process, the other ends of the respective cords 511 , 512 , 521 , 522 fixed on the cord fixing portion 329 of the suction grille 320 are simultaneously lowered downward.

Each wire fixing part 329 is located on the lower side of each guide 750, and each wire 511, 512, 521, 522 extends in the up-down direction.

That is, since the wire fixing portion 329 is arranged under the guide 750 that supports the wire, shaking can be minimized during the movement of each wire 511, 512, 521, 522 in the up-down direction. Also, since each wire 511, 512, 521, 522 is supported by the four guides 750, the load can be uniformly distributed, and the load applied to the rollers of each roll box can be minimized.

In addition, since the guide 750 and the roller box 550 are fixed structures, the wire rope does not rattle while being supported by the guide 750 and the start roller 551 .

During the ascending or descending process of the suction grill 320, only the wire rope fixing part 329 is a structure that may shake, and the wire rope fixing part 329 is arranged on the lower side of the guide member 750. Therefore, the guide member 750 and The length of the cord between cord fixing portions 329 is minimized.

That is, since the guide 750 and the cord fixing portion 329 are arranged in the up-down direction, the length of the cord unwound during the descending of the suction grill 320 is minimized. When the suction grille descends, when the cords are arranged diagonally, it is necessary to unwind the cords of a larger length than in the case of the vertical direction.

<The rising process of the suction grill>

By receiving an operation signal input by the user in a state where the suction grill 320 is lowered, the control unit can raise the suction grill 320 to the original position.

The control unit rotates each of the rollers 530 of the first unit 510 and the second unit 520 in a clockwise direction in order to return the suction grille 320 to the initial position.

The control unit raises the suction grille 320 in a horizontal state by maintaining the same rotation amount and rotation speed of each roller 530 .

When the suction grille 320 rises, the cord fixing portion 329 moves to the upper side in the vertical direction, and the ends of the respective cords also move to the upper side from the lower side.

By the rotation of the drum 530, the 1-1 wire 511 and the 1-2 wire 512 of the first unit 510 and the 2-1 wire 521 and the 2-2 wire 522 of the second unit 520 Simultaneous winding to respective rolls 530 .

When the drum 530 of the first unit 510 rotates, the 1-1 wire 511 and the 1-2 wire 512 are aligned in the horizontal direction in the first area 531 and the second area 532 of the drum 530 and coiled.

The 1-1 line 511 passes through the guide 750 in the vertical direction, and then changes its direction in the horizontal direction, and passes through the start roller 551 , the second roller 552 , the third roller 553 and the end roller 554 , It is wound around the outer peripheral surface of the roller main body 535 of the first region 531 . After the 1-1 cord 511 is wound in a row on the outer peripheral surface of the drum main body 535, a layer is formed again above the 1-1 cord 511 wound in a row, and the coiled.

After passing through the guide 750 in the vertical direction, the 1st-2nd wire rope 512 is switched in the horizontal direction, and after passing through the start roller 561 , the second roller 562 , the third roller 563 and the end roller 564 , It is wound around the outer peripheral surface of the roller main body 535 of the second region 532 .

Also, in the second unit 520 that rotates simultaneously with the first unit 510 , the 2-1 wire 521 and the 2-2 wire 522 are wound at the same speed as the first unit 510 .

Similar to the first unit 510 , when the drum 530 of the second unit 520 rotates, one end of the 2-1 wire 521 and one end of the 2-2 wire 522 are on the roller 530 . The first area 531 and the second area 532 are aligned and wound.

As described in this embodiment, the suction grille 320 is four-pointed by the 1-1 cord 511 , the 1-2 cord 512 , the 2-1 cord 521 and the 2-2 cord 522 . support.

In a state where the suction grille 320 is supported at four points, the suction grille can be synchronized by synchronizing the rotation amount and rotation speed of each roller 530 arranged on the first unit 510 and the second unit 520 . Both sides of the gate 320 rise or fall simultaneously.

In the indoor unit of the present embodiment, although the roller motors 540 are arranged in the first unit 510 and the second unit 520 , the control unit can control the four wire ropes uniformly through the rotation amount sensing device 600 .

In addition, the indoor unit of the present embodiment is provided with a structure in which the 1-1 cord 511 and the 1-2 cord 512 can be simultaneously wound or unwound by driving one roller 530, so that the suction compartment can be prevented. The inclination of the grid 320.

Fig. 15 is a diagram showing an example of the operation of the ceiling-type indoor unit according to the second embodiment of the present invention. FIG. 16 is a lower perspective view showing the lifter of FIG. 15 . FIG. 17 is a perspective view showing the internal structure of the lifter of FIG. 16 . FIG. 18 is a plan view of FIG. 17 . Fig. 19 is a diagram showing an example of the operation of the lifter according to the second embodiment of the present invention.

The ceiling-mounted indoor unit of the air conditioner of the present embodiment has a structure that does not include the cord guide of the first embodiment. In this embodiment, the 1-1 cord 511 and the 1-2 cord 512 of the first unit 1510 are directly fixed to the suction grill 320 , and the 2-1 cord 521 and the 2-2 cord of the second unit 1520 are directly fixed to the suction grill 320 . The cord 522 is also fastened directly to the suction grill 320 .

Therefore, the first hole 1591 and the second hole 1592 are formed on the lower side of the first unit case 590 , and the first hole 1591 and the second hole 1592 are formed on the lower side of the second unit case 590 .

The first hole 1591 and the second hole 1592 are symmetrical with respect to the axis center C of the roller 530 . The distance between the shaft center C and the first hole 1591 is the same as the distance between the shaft center C and the second hole 1592 . The first hole 1591 is located at a lower position than the first roll box 550 , and the second hole 1592 is located at a lower position than the second roll box 560 .

The 1-1 cord 511 extends downward through the first hole 1591 , and is fixed to the first cord fixing portion 329 - 1 of the suction grill 320 . The 1-2 strings 512 extend downward through the second holes 1592 , and are fixed to the second string fixing portion 329 - 2 of the suction grill 320 .

The 2-1 wire 521 extends downward through the first hole 1591 , and is fixed to the third wire fixing portion 329 - 3 of the suction grill 320 . The 2-2 wire 522 extends downward through the second hole 1592 , and is fixed to the fourth wire fixing portion 329 - 4 of the suction grill 320 .

In the first embodiment described, less load is applied to the roll box 550 because the wire is supported on the wire guide. However, without the wire guide as described in this embodiment, the overall load of the suction grille 320 will be applied to the roll box 550 .

Although the roller box 1550 of the present embodiment has a structure similar to that of the first embodiment, a structure capable of supporting the load of the suction grill 320 more firmly is provided. The first roller box 1550 includes: a box body 1555 fixed on the unit casing 590 ; a start roller 1551 and a stop roller 1554 , which are arranged inside the box body 1555 and are connected to the 1-1 wire rope 511 . The second roller 1552 and the third roller 1553 are arranged inside the box 1555, and the first-1 string 511 is in contact with the When the 1-1 cord 511 is moved, the 1-1 cord 511 is rotated by friction, and can be relatively moved in the axial direction by the tension of the 1-1 cord 511; the roller elastic member 1556 is At least one of the second roller 1552 and the third roller 1553 is elastically supported.

The second roll 1552 and the third roll 1553 are arranged between the start roll 1551 and the end roll 1554 . When the 1-1 wire 511 is unwound, the 1-1 wire 511 is brought into contact with the end roll 1554 , the third roll 1553 , the second roll 1552 , and the start roll 1551 in this order. Conversely, when the 1-1 wire 511 is wound, the 1-1 wire 511 is brought into contact with the start roller 1551 , the second roller 1552 , the third roller 1553 and the end roller 1554 in this order. The start roller 1551 is located at the farthest position from the roller 530 , and the end roller 1554 is located at the closest position to the roller 530 .

The start roller 1551, the second roller 1552, the third roller 1553, and the end roller 1554 are assembled on the respective roller shafts 1551a, 1552a, 1553a, and 1554a, and can rotate around the respective roller shafts 1551a, 1552a, 1553a, and 1554a. .

At least one of the start roller 1551 , the second roller 1552 , the third roller 1553 , and the end roller 1554 may rotate while being fixed, and the other rollers move and rotate along with the roller shafts.

In this embodiment, the start roller 1551 is a fixed roller that does not move with the roller shaft, and the second roller 1552 , the third roller 1553 and the end roller 1554 are moving rollers that can move with the roller shaft.

Since the thread passing through the starting roller 1551 is coupled to the suction grill 320, the shaking of the suction grill 320 can be suppressed by fixing the starting roller 1551. In this embodiment, the starting roller 1551 rotates in-situ around the roller shaft 1551 a while being coupled to the roller shaft 1551 a.

In this embodiment, the second roller 1552, the third roller 1553, and the end roller 1554 can not only rotate in the state of being coupled to the respective roller shafts 1552a, 1553a, and 1554a, but also can be rotated when a force is applied in the direction of the roller shaft. Relative movement is also possible with the rollers.

By the relative movement of the second roller 1552 , the third roller 1553 , and the end roller 1554 , the 1-1 wire 511 is aligned and wound in a row on the roller 530 .

A wire guard 1551b is arranged to be spaced apart from the start roller 1551 by a predetermined distance. The 1-1 wire 511 is arranged between the wire guard 1551b and the start roller 1551 . The wire guard 1551b prevents the wire wound on the starting roller 1551 from escaping from the roller.

Wire guards 1552b, 1553b, and 1554b are also arranged on the second roller 1552, the third roller 1553, and the end roller 1554.

Preferably, the roller that directly supplies the 1-1 wire 511 to the suction grille 320 is fixed to the case 1555 . In the case where the roller that supplies the wire to the suction grille 320 moves in the axial direction, shaking may occur during ascending or descending.

Therefore, in this embodiment, the starting roller 1551 is a fixed roller and rotates in the box 1555 at its original position, and the second roller 1552, the third roller 1553 and the ending roller 1554 are moving rollers, and can be moved along with the move along the rollers.

In this embodiment, the roller elastic member 1556 uses a coil spring. The roller elastic member 1556 provides elastic force in the up-down direction. In this embodiment, the roller elastic member 1556 elastically supports the roller shaft 1553b of the third roller 1553 .

The roller elastic member 1556 is preferably arranged on the inner roller among the plurality of rollers. The roller elastic member 1556 may be arranged on either the second roller 1552 or the third roller 1553, and in this embodiment, it is arranged on the third roller 1553.

The roller elastic member 1556 provides elastic force to the roller toward the wire guard side. In this embodiment, the roller elastic member 1556 presses the third roller 1553 upward by elastic force. The roller elastic member 1556 applies tension to the 1-1 wire 511 and keeps the 1-1 wire 511 in a tight state.

When the 1-1 wire 511 is wound in one row on the outer peripheral surface of the drum main body 535 and then wound in the second row, the roller elastic member 1556 is compressed according to the thickness of the wire, and the third roller 533 is moved downward in accordance with the step size of the stacking of the strings.

In order to allow the third roller 1553 to move in the vertical direction, the box 1555 is formed with a rail 1557 that guides the roller shaft 1553a of the third roller 1553 to move in the vertical direction. The third roller 1553 can move in the up-down direction along the rail 1557 .

In this embodiment, since four rollers are used, the roller elastic member 1556 is provided on the third roller, but when three rollers are used, the roller elastic member 1556 may be provided on the second roller.

The start roller 1551, the second roller 1552, the third roller 1553, and the end roller 1554 are arranged in a zigzag pattern in the up-down direction.

One end of the 1-1 wire 1551 is fixed to the roller 530 , and the other end is fixed to the suction grill 320 .

In the present embodiment, the 1-1 wire 1551 extends downward and is coupled to the suction grill 320 while being supported by the upper outer peripheral surface of the start roller 1551 . One end of the 1-1 wire 1551 is fixed to the roller 530 in a state of being supported by the lower outer peripheral surface of the end roller 443 . The second roll box 1560 is the same structural element as the second roll box 560 .

The second roller box 1560 includes: a box body 1565 fixed on the unit casing 1590 ; a start roller 1561 and a stop roller 1564 , which are arranged inside the box body 1565 and are connected to the 1st-2nd wire rope 512 The second roller 1562 and the third roller 1563 are arranged inside the box 1565 and are connected with the first-2 thread 512 When the 1-2 wire 512 is moved, it is rotated by friction, and the tension of the 1-2 wire 512 can be used for relative movement in the axial direction; the roller elastic member 1566 is At least one of the second roller 1562 and the third roller 1563 is elastically supported. The third roller 1563 can move in the up-down direction along the rail 1567 .

The start roller 1561, the second roller 1562, the third roller 1563, and the end roller 1564 are assembled on the respective roller shafts 1561a, 1562a, 1563a, and 1564a, and can rotate around the respective roller shafts 1561a, 1562a, 1563a, and 1564a. .

The second roll box 1560 is provided with respective wire guards 1561b, 1562b, 1563b, 1564b spaced apart from the start roll 1561, the second roll 1562, the third roll 1563, and the end roll 1564 at predetermined intervals.

The first roll box 1550 and the second roll box 1560 are arranged symmetrically with respect to the roll 530 . In particular, the first roll box 1550 and the second roll box 1560 are symmetrical in the lateral direction with the shaft center C as a reference.

The start rollers 1551 and 1561 are arranged at the farthest positions, and the end rollers 1554 and 1564 are arranged at the closest positions with respect to the shaft center C as a reference.

Both the 1-1 wire 511 and the 1-2 wire 512 are arranged to extend downward while being supported by the upper outer peripheral surfaces of the start rollers 1551 and 1561 .

In this embodiment, the one end 515 of the 1-1 wire 511 and the one end 516 of the 1-2 wire 512 are located on opposite sides of each other based on the axis center of the roller 530 . By the rotation of the drum 530, the 1-1 wire 511 and the 1-2 wire 512 are wound or unwound around the drum main body 535 in the same direction.

The unit housing 590 is formed in a box shape, and a first hole 1591 and a second hole 1592 are formed on the lower side surface. The first hole 1591 and the second hole 1592 are symmetrical with respect to the axis center C of the roller 530 . The distance between the shaft center C and the first hole 1591 is the same as the distance between the shaft center C and the second hole 1592 . The first hole 1591 is located at a lower position than the first roll box 1550 , and the second hole 1592 is located at a lower position than the second roll box 1560 .

Parts of the starting rollers 1551 and 1561 are exposed to the outside of the boxes 1555 and 1565 . The first hole 1591 is arranged on the lower side of the exposed starting roller 1551 . The second hole 1592 is arranged on the lower side of the exposed starting roller 1561 . When viewed from above, the exposed starting roller 1551 and the first hole 1591 overlap. Likewise, the exposed starting roller 1561 and the second hole 1592 overlap when viewed from above.

The other end (lower end) of the 1-1 wire 511 penetrates the first hole 1591 and is coupled to the suction grill 320 . The other end (lower end) of the 1st-2nd wire 512 passes through the second hole 1592 and is coupled to the suction grill 320 .

The start roller 1551 of the first roller box 1550 is arranged above the first hole 1591 . The start roller 1561 of the second roller box 1560 is arranged above the second hole 1592 . The start rollers 1551 and 1561 do not move, but rotate at their original positions and suppress the movement of the cords 511 and 512, whereby the shaking of the suction grill 320 can be minimized.

In this Example, the said 1-1 cord 511 and the 1-2 cord 512 are arrange|positioned inclined with respect to the vertical direction. Similarly, the 2-1 wire 521 and the 2-2 wire 512 are also arranged so as to be inclined with respect to the vertical direction.

The said 1-1 cord 511 is arrange|positioned obliquely to the front side with respect to the vertical direction, and the said 1-2 cord 512 is arrange|positioned inclined to the rear side with respect to a vertical direction. The 2-1 wire 521 is arranged obliquely to the front side with respect to the vertical direction, and the 2-2 wire 522 is arranged slanted to the rear side with respect to the vertical direction.

Therefore, the interval between the first wire fixing portion 329-1 and the second wire fixing portion 329-2 is wider than the interval between the first hole 1591 and the second hole 1592 of the first roll box 1550 form.

And, compared with the interval between the first hole 1591 and the second hole 1592 of the second roller box 1560, the interval between the third wire rope fixing part 329-3 and the fourth wire rope fixing part 329-4 is more Widely formed.

By arranging the holes and the other end of the wire as described above, the 1-1 wire 511 is arranged obliquely to the front side, the 1-2 wire 512 is arranged to be slanted to the rear side, and the 2-1 wire 512 is arranged diagonally to the rear side. The wire 521 is arranged obliquely to the front side, and the 2-2 wire 522 is arranged to be inclined to the rear side.

In the case where the cord is arranged obliquely, the length of the unit case can be made short, and the installation space of the unit case can be minimized.

In addition, when the cord is disposed obliquely, the length of the cord extending to the suction grill 320 can be made short.

In the present embodiment, the 1-1st direction 511a' is arranged to face the end roller 1554 of the 1-1st roll box 1550, and the 1-2nd direction 512a' is arranged to face the end of the 1-2nd roll box 1560 Roller 1564 is configured.

The 1-1st direction 511 a ′ may be the tangential direction of the first region 531 and the end roller 1554 . The 1-2 direction 512a ′ may be the tangential direction of the second region 532 and the end roller 1564 .

In this Example, the said 1-1 cord is arrange|positioned so that the upper side surface of the 1st area|region 531 and the lower side surface of the termination roller 1554 may be surrounded. The said 1-2 cords are arrange|positioned so that the lower surface of the said 2nd area|region 532 and the lower surface of the termination roller 1564 may be surrounded.

The remaining features below are the same as those of the first embodiment, and thus detailed descriptions thereof will be omitted.

FIG. 20 is an illustration diagram showing an arrangement state of the cords of the third embodiment of the present invention.

The ceiling-mounted indoor unit of the air conditioner of the present embodiment has a structure that does not include a cord guide as in the second embodiment. In this embodiment, the 1-1 cord 511 and the 1-2 cord 512 of the first unit 1510 are directly fixed to the suction grill 320 , and the 2-1 cord 521 and the 2-2 cord of the second unit 1520 are directly fixed to the suction grill 320 . The cord 522 is also fastened directly to the suction grill 320 .

Unlike the second embodiment, the wires are not arranged obliquely, but are arranged in a vertical direction.

In this embodiment, the interval between the first hole 1591 and the second hole 1592 of the first roller box 1550 is the same as the interval between the first wire rope fixing part 329-1 and the second wire rope fixing part 329-2 form.

Also, the interval between the first hole 1591 and the second hole 1592 of the second roll box 1560 is formed to be the same as the interval between the third wire rope fixing portion 329-3 and the fourth wire wire fixing portion 329-4.

The remaining features below are the same as those of the second embodiment, and thus detailed descriptions thereof will be omitted.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, and can be manufactured in various forms different from each other without changing the technical idea or essential features of the present invention In the following, those of ordinary skill in the technical field to which the present invention pertains should understand that other specific forms can be used for implementation. Therefore, the above-described embodiments are illustrative in all respects and not restrictive.

Explanation of reference numerals

100: Housing 101: Suction port

102: Discharge port 103: Suction flow path

104: Discharge channel 110: Shell case

120: Front panel 130: Indoor heat exchanger

140: Indoor fan 200: Blade module

300: Front panel 310: Front body

320: Suction grill 321: Grill hole

322: Grill body 323: Grille

324: Grille body 329: Cord fixing part

330: Pre-filter 500: Lifter

600: Rotation Sensing Device 700: Wire Guide

701: First wire guide 702: Second wire guide

703: Third wire guide 704: Fourth wire guide

710: Fixed block 720: Assembly block

730: Fixed block body 740: Assembly block body

750: Guide

Claims (21)

1. An air conditioner, wherein,

the method comprises the following steps:

a housing having a suction port and a discharge port;

a suction grill disposed in the housing so as to be separable from the lower side of the housing;

a 1 st-1 st string fixed to the suction grill;

a 1-2 th string fixed in the suction grill at a position spaced apart from a position where the 1-1 st string is fixed to the suction grill; and

a first unit disposed inside the casing to raise or lower the suction grill by winding or unwinding the 1 st-1 st cord and the 1 st-2 nd cord,

the first unit includes:

a first roller around which the 1 st-1 st and 1 st-2 nd cords are wound;

a first roller motor that rotates the first roller;

a termination roller disposed adjacent to the first drum, the 1 st-1 st wire being wound around the termination roller;

a start roller configured such that the start roller is spaced from the first drum by a distance greater than the stop roller is spaced from the first drum, the 1 st-1 st wire rope being wound around the start roller;

a termination roller shaft providing a rotation center of the termination roller; and

a start roller shaft providing a rotation center of the start roller,

the termination roller is coupled to the termination roller shaft so as to be movable along the termination roller shaft, and the start roller is coupled to the start roller shaft so as to have a fixed rotational position.

2. The air conditioner according to claim 1,

the first roller comprises:

a first region formed on an outer circumferential surface of the first drum, the 1 st-1 st string being wound around the first region; and

a second region formed on an outer circumferential surface of the first drum, the 1 st-2 nd cord being wound around the second region,

the 1 st-1 cord is in contact with the outer circumferential surface of the first region, and the 1 st-2 cord is in contact with the outer circumferential surface of the second region.

3. The air conditioner according to claim 2,

the first roller further includes a first portion for dividing the first area and the second area, the first portion protruding from an outer circumferential surface of the first roller.

4. The air conditioner according to claim 3,

the first portion is protruded in a radius direction of the first roller and is formed in a circumferential direction of the first roller to be orthogonal to a motor shaft of the first roller motor.

5. The air conditioner according to claim 2,

the first and second zones of the first roll are arranged in a parallel manner.

6. The air conditioner according to claim 2,

based on the axial center of the first roller, the 1 st-1 st wire is supported on the upper side of the first area, and the 1 st-2 nd wire is supported on the lower side of the second area.

7. The air conditioner according to claim 2,

based on the axial center of the first roller, the 1 st-1 st wire is supported on the lower side of the first area, and the 1 st-2 nd wire is supported on the upper side of the second area.

8. The air conditioner according to claim 1,

the first unit further comprises:

the first unit shell, the first roller and the first roller motor are arranged on the first unit shell,

the first unit case includes:

a first hole through which the 1 st-1 st cord extends; and

a second hole through which the 1 st-2 nd strand extends.

9. The air conditioner according to claim 8,

the first hole and the second hole of the first unit case are open toward a lower side.

10. The air conditioner according to claim 8,

the first and second holes of the first unit case are disposed at the side wall of the first unit case, and the first and second holes of the first unit case are disposed in opposite directions to each other.

11. The air conditioner according to claim 10,

further comprising:

a first cord guide disposed on the casing, supporting the 1 st-1 st cord, and positioned above the suction grill; and

a second cord guide disposed at the casing, supporting the 1 st-2 nd cords, and positioned at an upper side of the suction grill,

the first hole of the first unit case is disposed toward the first cord guide, and the second hole of the first unit case is disposed toward the second cord guide.

12. The air conditioner according to claim 1,

further comprising:

a first rotation sensing device disposed at the first unit for sensing rotation of the first roller,

the first rotary sensing device includes:

a rotation sensing factor disposed at the first roller and rotating together with the first roller when the first roller rotates;

a sensor, configured spaced apart from the rotation sensing factor, for sensing rotation of the rotation sensing factor; and

a printed circuit board, the sensor being disposed on the printed circuit board.

13. The air conditioner according to claim 12,

the sensor is an infrared sensor and the sensor is,

the rotation sensing factor is saw teeth which are convexly arranged towards the outer side of the radius direction of the first roller,

the sensor senses an infrared signal that is confined by the serrations.

14. The air conditioner according to claim 12,

the sensor includes a light-emitting portion and a light-receiving portion,

the rotation sensing device further includes:

a sensor mounting portion on which the light emitting portion and the light receiving portion are provided; and

a slot formed at the sensor mounting part, concavely formed to pass the rotation sensing factor therethrough,

the light emitting section and the light receiving section are arranged on opposite sides of the slot.

15. The air conditioner according to claim 1,

the first unit further comprises:

a transfer roller around which the 1 st-1 st string is wound, the transfer roller being disposed between the start roller and the end roller.

16. The air conditioner according to claim 1,

the 1 st-1 st wire is disposed in contact with an upper side of the stop roller.

17. The air conditioner according to claim 1,

the 1 st-1 st wire is disposed in contact with a lower side of the starter roll.

18. The air conditioner according to claim 15,

the transfer roller includes:

a second roller disposed between the start roller and the end roller; and

a third roller disposed between the second roller and the finishing roller.

19. The air conditioner according to claim 1,

the start roller rotates at a home position of the start roller shaft.

20. The air conditioner according to claim 1,

the 1 st-1 st cord is simultaneously in contact with the stop roller and the first drum.

21. The air conditioner according to claim 1,

the 1 st-1 st and 1 st-2 nd cords extend in opposite directions from each other.

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