JP2010148661A - Floor suction nozzle, and vacuum cleaner connecting the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor suction nozzle which makes it easy to confirm a situation even in a dark place since an illumination portion is provided, easily sucks dust against a wall, and is capable of effectively protect the cover of the illumination portion. <P>SOLUTION: The floor suction nozzle 1 has a suction port 15 on the bottom surface of a body case 10. Inside the body case 10, a rotary brush 16 rotated by a drive source is disposed in the form of facing the suction port 15. On the upper surface of the body case 10, the illumination portion 21 for illuminating the front is provided. The suction port 15 is extended to the front surface of the body case 10 and forms a front surface suction port 17. The rotary brush 16 also faces the front surface suction port 17. The suction port 17 is provided with a flip top shutter 18 for closing it. The shutter 18 is displaced to a position for protecting the illumination portion 21 from an obstacle in front thereof, when changing an angle so as to open the front surface suction port 17. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a floor suction tool for a vacuum cleaner and a vacuum cleaner for connecting the suction tool.

  The vacuum cleaner floor suction tool is usually provided with a rotating brush. As can be seen in Patent Document 1, there is also one provided with an illumination unit that illuminates the front. If a lighting unit is provided, it is possible to brighten places where room lighting is difficult to reach, such as corners of the room and under the bed, etc., and it is possible to inhale dust and things that should not be inhaled. Can be avoided.

  In floor suction tools, the suction port is usually formed on the bottom surface of the main body case, and a rotating brush is placed inside the main body case so as to face the suction port. In some cases, a front suction port is formed, and the rotary brush faces the front suction port. An example can be seen in Patent Document 2. In the configuration described in Patent Document 2, the front suction port is configured so that the suction force from the suction port facing the floor surface is not weakened, and the user's fingers are in contact with the rotating brush that is rotating. Closed with a cover to avoid accidents such as injury. The cover is lifted only when approaching a wall or the like, and suction from the front suction port becomes possible.

  Conventional configuration examples of the floor suction tool are shown in FIGS. 29 is a side view, and FIG. 30 is a top view. The floor suction tool 100 has a flat and horizontally long main body case 101. A connecting tube 102 for connecting to a vacuum cleaner (not shown) protrudes from the rear center of the main body case 101. The main body case 101 is supported on the floor by a rear main wheel 103 and a front auxiliary wheel 104. A suction port (not shown) is formed on the bottom surface of the main body case 101, and a part of the rotating brush 105 protrudes therefrom.

An illumination unit 106 is provided on the upper surface of the main body case 101. The illuminating unit 106 is formed by integrally molding the main body case 101 or by attaching a separate part. The illuminating unit 106 is disposed inside the housing unit 106a and the housing unit 106a having an opening on the front surface. A light source (not shown) that projects forward from the front and a transparent resin cover 106b that covers the front opening of the housing portion 106a.
JP-A-4-54930 (International Patent Classification: A47L9 / 04) JP 2004-141536 A (International Patent Classification: A47L9 / 02)

  Floor suction tools frequently collide with obstacles such as furniture and walls. In the conventional floor suction tool 100 shown in FIGS. 29 and 30, the cover 106 b of the illumination unit 106 is a portion that is particularly likely to collide. In order to prevent damage even if it collides, it may be molded with a resin having high impact resistance. However, in the case of the cover 106b, transparency and cost are the first conditions for resin selection, and the impact resistance is not necessarily limited. It can't be based on height. For this reason, there has been a demand for a means for preventing the cover 106b from colliding with a wall or furniture.

  The present invention has been made in view of the above points, and since it has an illumination part, it is easy to check the situation even in a dark place, it is easy to suck in dust at the wall, and it effectively protects the cover of the illumination part. An object of the present invention is to provide a floor suction tool. Furthermore, it aims at providing the vacuum cleaner which can connect the suction inlet for floors and can raise cleaning efficiency.

  In order to achieve the above object, the present invention is arranged in a main body case having a suction port on the bottom surface, with a rotating brush rotating by a driving source facing the suction port, and on the upper surface of the main body case, In a vacuum cleaner floor suction tool provided with a lighting unit that illuminates the front surface, the suction port is extended to the front surface of the main body case to form a front suction port, and the rotating brush faces the front suction port. The front suction port is provided with a flip-up type shutter that closes the front suction port, and the shutter is displaced to a position that protects the illumination unit from a front obstacle when the angle is changed to open the front suction port. It is characterized by.

  According to this configuration, the lighting section provided on the upper surface of the main body case can brighten the places where the room lighting is difficult to reach, such as the corner of the room or under the bed, and it is not possible to check well that dirt is sucked in. You can avoid the situation of inhaling things that should not be inhaled. In addition, since the suction port on the bottom surface of the main body case is extended to the front surface of the main body case to make it a front suction port, dust near the wall and furniture can be sucked in well. The front suction port is closed by a shutter when dust is not sucked from it, so the suction force from the suction port facing the floor is not weakened, and the user's fingers touch the rotating brush that is rotating. Accidents such as injury can be avoided. And when changing the angle to open the front suction port, the shutter is displaced to a position that protects the illumination unit from obstacles in front, so that the obstacle collides with the illumination unit and scratches or breaks the transparent cover. There's nothing to do.

  According to the present invention, in the floor suction tool configured as described above, a part of the shutter serves as a bumper part protruding forward, and when the shutter opens the front suction port, the bumper part turns forward in front of the illumination part. It is characterized by that.

  According to this configuration, since the bumper portion is formed, the rigidity is increased and the strength of the shutter is improved. Since the bumper portion wraps around in front of the illumination portion, the illumination portion is further effectively protected.

  According to the present invention, in the floor suction tool configured as described above, the bumper portion is formed with a hole or a notch through which light projected by the illumination portion is transmitted.

  According to this configuration, the front illumination is not hindered by the presence of the bumper portion.

  According to the present invention, in the floor suction tool configured as described above, the bumper portion is provided with a transparent plate portion that transmits the light projected by the illumination portion.

  According to this configuration, the front illumination is not hindered by the presence of the bumper portion.

  According to the present invention, in the floor suction tool configured as described above, the transparent plate portion is a concave lens that refracts and diffuses the light projected by the illumination portion.

  According to this configuration, it is possible to illuminate a wide range.

  According to the present invention, in the floor suction tool configured as described above, when the bumper portion hits an obstacle ahead and receives pressure, a moment in a direction to open the front suction port acts on the shutter.

  According to this configuration, the shutter can be opened simply by pressing the bumper portion against the obstacle.

  According to the present invention, in the floor suction tool configured as described above, the shutter is angle-changed to an angle at which the front suction port is closed or an angle at which the shutter is opened by power.

  According to this configuration, the shutter can be opened and closed without requiring labor.

  According to the present invention, in the floor suction tool configured as described above, a speed change mechanism is provided between the rotating brush and the drive source, and a speed change shift of the speed change mechanism is performed by opening and closing the shutter. .

  According to this configuration, the number of rotations of the rotating brush can be changed depending on whether the suction is performed from the suction port on the bottom surface or the suction is performed from the front suction port. For example, when suctioning from the front suction port, the rotating brush can be rotated at a reduced speed for safety.

  According to the present invention, in the floor suction tool configured as described above, a detection device that detects the open / closed state of the shutter and transmits the detection signal to the vacuum cleaner connected to the floor suction tool is provided. It is characterized by.

  According to this structure, the open / close state of the shutter can be transmitted to the vacuum cleaner, which can be used for controlling the vacuum cleaner.

  In order to achieve the above object, the present invention provides a vacuum cleaner that connects the floor suction tool, and based on a detection signal from the detection device, the number of rotations of the rotating brush according to the open / closed state of the shutter. It is characterized by performing control to change.

  According to this configuration, the rotating brush can be rotated at a rotation speed suitable for the open / close state of the shutter. When suctioning from the front suction port, the rotating brush can be rotated at a reduced speed for safety.

  According to the present invention, it is possible to brighten and clean even in places where room lighting is difficult to reach such as corners of the room and under the bed, and it is possible to suck in dust at the edge of walls and furniture well, and the transparent cover of the lighting section It is possible to obtain a floor suction tool that is less likely to be damaged.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view of a floor suction tool according to the first embodiment, FIG. 2 is a vertical sectional view of the floor suction tool according to the first embodiment, and FIG. 3 is a floor suction tool according to the first embodiment. FIG. 4 is a side view of the floor suction tool according to the first embodiment with the front suction port opened, and FIG. 5 is a floor view according to the first embodiment. FIG. 6 is a top view of the floor suction tool according to the first embodiment, and FIG. 7 is a shutter used in the floor suction tool according to the first embodiment. FIG. In FIG. 1, the left side is the front (front part) of the floor suction tool, and the right side is the rear (rear part). The left and right sides of the floor suction tool shall correspond to the left and right sides of the user when the user stands behind the floor suction tool and looks forward.

  The floor suction tool 1 according to the first embodiment includes a flat and horizontally long main body case 10. A connecting tube 11 for connecting to a vacuum cleaner (not shown) protrudes from the rear center of the main body case 10. The connecting pipe 11 is attached to the main body case 10 so as to be rotatable in a vertical plane by a joint portion 12 (see FIG. 2). The joint portion 12 also serves to airtightly connect the inside of the connecting pipe 11 and the inside of the main body case 10. The connecting pipe 11 is provided with electric wiring for supplying electric power to the electric motor and LED lamp described later in the main body case 10 from the electric vacuum cleaner side and controlling them.

  The main body case 10 is supported on the floor by a main wheel 13 arranged at the rear and an auxiliary wheel 14 arranged in front of the main wheel 13. A pair of left and right main wheels 13 and auxiliary wheels 14 are provided. A suction port 15 (see FIG. 2) is formed on the bottom surface of the main body case 10 at a portion near the front end. A rotating brush 16 is disposed inside the main body case 10 so as to face the suction port 15. The width of the rotating brush 16 viewed from the front, that is, the front width is slightly shorter than the front width of the suction port 15, and the lower portion of the brush passes through the suction port 15 and protrudes toward the floor. The rotating brush 16 is a so-called power brush that is rotated by using an electric motor (not shown) disposed in the main body case 10 as a power source.

  The suction port 15 extends to the front surface of the main body case 10, and as a result, a front suction port 17 is formed on the front surface of the main body case 10. The rotating brush 16 also faces the front suction port 17, and the brush front part slightly protrudes from the front suction port 17.

  The front suction port 17 is provided with a shutter 18 having the shape shown in FIG. The shutter 18 is a flip-up type, and is attached to the main body case 10 with fulcrum shafts 19 provided on both the left and right sides. The position shown in FIGS. 1 and 2 around the fulcrum shaft 19 and the positions shown in FIGS. 4 and 5. Rotate between positions. The shutter 18 closes the front suction port 17 at the position shown in FIGS. 1 and 2, and the shutter 18 fully opens the front suction port 17 at the position shown in FIGS. 4 and 5. The shutter 18 is normally maintained at the position shown in FIGS. 1 and 2 by gravity.

  A part of the shutter 18 is a bumper portion 20 protruding forward. The bumper portion 20 is a ridge-like protrusion having the same front width as the shutter 18, and has a V-shaped cross section as seen in FIG. 2. This shape increases the rigidity of the shutter 18 and improves the strength. is doing. The bumper portion 20 protrudes obliquely upward rather than horizontally, and the tip of the bumper portion 20 is higher than the fulcrum shaft 19 in the shutter closed position shown in FIGS.

  An illumination unit 21 is provided on the upper surface of the main body case 10. The illuminating unit 21 is formed by integrally molding the main body case 10 or by attaching a separate part. The illuminating unit 21 is disposed inside the housing unit 22 and the housing unit 22 having an opening on the front surface. LED lamp 23 that projects forward from the front, and a transparent resin cover 24 that covers the front opening of housing 22. Note that FIG. 2 is drawn with the cover 24 removed.

  The floor suction tool 1 is connected to a vacuum cleaner (not shown) via a hose and an extension pipe (not shown), and operates as follows. When operating the hand operating part of the hose to turn on the vacuum cleaner, air suction starts from the connecting pipe 11 through the main body case 10. When the floor suction tool 1 is pulled away from the wall or furniture, the shutter 18 is lowered to the position shown in FIGS. 1 and 2, the front suction port 17 is closed, and air is fed only from the bottom suction port 15. Inhaled. If necessary, the LED lamp 23 is turned on by operation of the hand operation unit, and the front of the floor suction tool 1 is illuminated.

  As shown in FIG. 6, the body case 10 is provided with a foot switch 25 on the left side of the connecting pipe 11. The foot switch 25 is a control switch for an electric motor that rotates the rotating brush 16, and steps on the rotating switch 16 to rotate the rotating brush 16 as necessary. Since the front suction port 17 is closed by the shutter 18, it is possible to avoid an accident in which a user's finger or the like comes into contact with the rotating rotary brush 16 and is injured.

  When cleaning near the wall or furniture, as shown in FIG. 3, the floor suction tool 1 is brought close to the wall or furniture (in FIG. 3, symbolized by the virtual line W), and the bumper of the shutter 18. Press part 20 against the wall or furniture. Then, as described above, since the tip of the bumper portion 20 is located higher than the fulcrum shaft 19, when pressure is applied to the bumper portion 20, a moment about the fulcrum shaft 19 is generated in the shutter 18. The moment is clockwise in FIG. 3, and the shutter 18 acts in a direction to open the front suction port 17, and the shutter 18 is flipped up. That is, the shutter 18 enters the main body case 10, and the bumper unit 20 turns around in front of the illumination unit 21. When it is fully hopped, the shutter 18 is in the position shown in FIGS.

  When the shutter 18 is flipped up, the front suction port 17 opens, so that dust can be sucked in from the front. The rotating brush 16 is preferably rotated so that the rotating brush 16 does not obstruct the passage of dust from the front. When the floor suction tool 1 is pulled away from the wall or furniture, the shutter 18 is lowered to the position shown in FIGS. 1 and 2 again.

  When the angle of the shutter 18 is changed in order to open the front suction port 17, the bumper unit 20 goes around the front of the illumination unit 21. For this reason, the illumination unit 21 is protected from obstacles in the front—walls, furniture, and the like—and the cover 24 is prevented from being damaged or damaged due to an obstacle colliding with the illumination unit 21.

  Next, a second embodiment and subsequent embodiments of the present invention will be described with reference to FIG. In these embodiments, “A”, “B”... Are added to the reference sign “1” of the floor suction tool, and different subscripts are added to the first embodiment to distinguish them from the first embodiment. Similarly, components that existed in the first embodiment but whose structure has changed from the first embodiment are given “A”, “B”... And the first embodiment. Constituent elements that are the same as those in the first embodiment are denoted by the same reference numerals as those used in the first embodiment, and description thereof is omitted.

  A second embodiment is shown in FIGS. FIG. 8 is a vertical sectional view of a floor suction tool for explaining points that should be considered in the first embodiment, FIG. 9 is a vertical sectional view of a floor suction tool according to the second embodiment, and FIG. FIG. 11 is a perspective view of the shutter used in the floor suction port according to the second embodiment when viewed from a different angle.

  The LED lamp 23 of the illumination unit 21 has an optical axis that illuminates the front of the floor suction tool. In the floor suction tool 1 of the first embodiment, as shown in FIG. 8, the bumper portion 20 of the shutter 18 blocks the optical axis and prevents light from reaching the floor.

  Therefore, in the floor suction tool 1A according to the second embodiment, the horizontally long hole 26 is formed in the bumper portion 20A of the shutter 18A. Since the light projected by the illumination unit 21 passes through the hole 26, the problem that the light does not reach the floor is solved.

  A third embodiment is shown in FIGS. FIG. 12 is a vertical sectional view of a floor suction tool according to the third embodiment, and FIG. 13 is a perspective view of a shutter.

  In the floor suction tool 1B according to the third embodiment, the horizontally long cutout 27 is formed in the bumper portion 20B of the shutter 18B. Since the light projected by the illumination unit 21 passes through the cutout 27, the problem that the light does not reach the floor is solved.

  A fourth embodiment is shown in FIG. FIG. 14 is a perspective view of the shutter of the floor suction tool according to the fourth embodiment.

  In the second embodiment, a hole is formed in the bumper portion of the shutter. In the third embodiment, a notch is formed in the bumper portion of the shutter. In the fourth embodiment, a horizontally long hole is provided in the bumper portion 20C of the shutter 18C. Thereafter, a transparent resin panel was fitted therein to form a transparent plate portion 28. Since the light projected by the illumination unit passes through the transparent plate 28, the problem that the light does not reach the floor is solved.

  A fifth embodiment is shown in FIGS. 15 and 16. 15 is a vertical sectional view of the floor suction tool according to the fifth embodiment, and FIG. 16 is a sectional view of the bumper portion of the shutter obtained along the line AA in FIG.

  In the floor suction tool 1D according to the fifth embodiment, the entire shutter 18D is molded from a transparent resin, and the bumper portion 20D itself is used as a transparent plate portion. A portion of the bumper unit 20D that transmits the light projected by the illumination unit 20 is molded as a concave lens 29 that refracts and diffuses light in the front, rear, left, and right directions.

  A single LED lamp 23 is not used, and a plurality of LED lamps 23 are developed in a horizontal row as shown in FIG. 16, but the light from these LED lamps 23 is further forward, backward, left and right by a concave lens 29. Since it is refracted and diffused, a wide range can be illuminated.

  A sixth embodiment is shown in FIGS. 17 and 18 are vertical cross-sectional views of the floor suction tool according to the sixth embodiment, in which the shutter angle is different, and FIG. 19 is a cross-section obtained from a direction 90 ° different from FIGS. 17 and 18. It is a fragmentary sectional view of the suction tool for floors.

  In the floor suction tool 1E according to the sixth embodiment, a gear 30 is fixed to a fulcrum shaft 19E integrally formed with the shutter 18E. A gear 32 fixed to the shaft of an electric motor 31 (see FIG. 19) disposed in the main body case 10 is engaged with the gear 30. By driving the electric motor 31, the shutter 18 is changed in angle to an angle at which the front suction port 17 is closed or an angle at which the shutter 18 is opened. For this reason, the shutter 18 can be opened and closed without requiring labor.

  Although the fulcrum shaft 19E exists on both the left and right sides, both of them need not be driven by the electric motor 31. The electric motor 31 may be arranged only in one of them. About control of the electric motor 31, it is good also as adding the foot switch similar to the foot switch 25 to the main body case 10, and good also as operating with the hand operation part of a hose.

The power source for rotating the shutter 18E is not limited to the electric motor. A configuration in which the shutter 18E is rotated by an electromagnet is also possible.
A seventh embodiment is shown in FIGS. 20 is a horizontal sectional view of the floor suction tool according to the seventh embodiment, FIG. 21 is a vertical sectional view of the floor suction tool according to the seventh embodiment, and FIG. 22 shows the position of the transmission pulley in the state of FIG. FIG. 23 is a vertical sectional view of the floor suction tool according to the seventh embodiment, in which the position of the shutter is different from that in FIG. 21, and FIG. 24 is a view showing the position of the transmission pulley in the state of FIG.

  The floor suction tool 1 </ b> F according to the seventh embodiment rotates the rotating brush 16 with the electric motor 33. A speed change mechanism 40 is interposed between the rotating brush 16 and the electric motor 33. The speed change mechanism 40 is located between the belt 41 wound around the shaft of the electric motor 33, the belt 42 wound around the shaft of the rotating brush 16, and the electric motor 33 and the rotating brush 16. The speed change pulley 43 and the speed change pulley 43 are supported so as to be rotatable and non-movable in the axial direction, and supported by a bearing portion 44 (see FIG. 22) in the main body case 10 so as to be rotatable and movable in the axial direction. And a surface cam 46 that contacts one end of the transmission shaft 45. The transmission pulley 43 has a drum shape, and one of the belts 41 and 42 is wound around the central small diameter portion, and the other of the belts 41 and 42 is wound around one of the large diameter portions on both sides thereof. The transmission shaft 45 is pressed against the surface cam 46 by a spring (not shown). The surface cam 46 rotates together with the shutter 18 about the fulcrum shaft 19.

  As shown in FIG. 21, when the shutter 18 closes the front suction port 17, the speed change pulley 43 and the speed change shaft 45 that supports the speed change pulley 43 are located on the left side in FIG. At this time, the belt 41 is wound around the small diameter portion at the center of the transmission pulley 43, and the belt 42 is wound around the large diameter portion located on the right side of the small diameter portion in FIG. This is the high speed side of the speed change mechanism 40, and the rotating brush 16 rotates at high speed.

  As shown in FIG. 23, when the shutter 18 opens the front suction port 17, the speed change pulley 43 and the speed change shaft 45 that supports the speed change pulley 43 are pushed by the cam projection 46a of the face cam 46 as shown in FIG. Shift to the right side of FIG. Then, the belt 41 changes from the small diameter portion of the transmission pulley 43 to the large diameter portion located on the left side (in FIG. 24), and the belt 42 changes from the large diameter portion to the small diameter portion. This is the low speed side of the speed change mechanism 40, and the rotating brush 16 rotates at a reduced speed.

  As described above, when suction is performed from the suction port 15 on the bottom surface of the main body case 10, the rotating brush 16 rotates at a high speed, so that dust can be scraped strongly. When suction is performed from the front suction port 17, the rotating brush 16 rotates at a reduced speed, so that safety is improved.

  An eighth embodiment is shown in FIGS. 25 and 26 are vertical cross-sectional views of the floor suction tool according to the eighth embodiment, with different shutter angles, and FIG. 27 is a horizontal cross-sectional view of the floor suction tool according to the eighth embodiment. .

  In the floor suction tool 1G according to the eighth embodiment, a switch 50 to be pushed by the end of the shutter 18 is disposed inside the main body case 10. The switch 50 functions as a detection device that detects the open / closed state of the shutter 18.

  In the state where the shutter 18 closes the front suction port 17 as shown in FIG. 25, the shutter 18 is separated from the switch 50. The switch 50 is in an “ON” or “OFF” state, and this state is transmitted as a detection signal to the vacuum cleaner, and the vacuum cleaner recognizes that the shutter 18 closes the front suction port 17. .

  When the shutter 18 opens the front suction port 17 as shown in FIG. 26, the end of the shutter 18 presses the switch 50. As a result, the ON / OFF state of the switch 50 is reversed. The fact that the ON / OFF state of the switch 50 is reversed is transmitted to the electric vacuum cleaner as a detection signal, and the electric vacuum cleaner recognizes that the shutter 18 has opened the front suction port 17.

  Thus, the open / close state of the shutter 18 can be transmitted from the switch 50 to the vacuum cleaner, which can be used for controlling the vacuum cleaner.

  For example, the electric vacuum cleaner can be controlled to change the rotation speed of the rotary brush 16 according to the open / closed state of the shutter 18 based on the detection signal from the switch 50. While the shutter 18 closes the front suction port 17, the rotating brush 16 is rotated at a high speed. However, when the shutter 18 opens the front suction port 17, the rotating brush 16 is rotated at a reduced speed to improve safety. To do.

  The configurations of the above embodiments can be implemented in various combinations as long as no contradiction occurs.

  About providing a lighting part in the suction tool for floors, the structure shown in FIG. 28 is also possible. That is, here, the shutter 18 is molded from a transparent resin, and the LED lamp 23 is disposed in the bumper portion 20. In this way, the illumination part arrangement space on the upper surface of the main body case 10 becomes unnecessary.

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention.

  The present invention is widely applicable to floor suction tools for vacuum cleaners.

It is a side view of the suction tool for floors concerning a 1st embodiment. It is a vertical sectional view of the floor suction tool according to the first embodiment. It is a side view showing the situation where the shutter hit the obstacle of the floor suction tool concerning a 1st embodiment. It is a side view of the state which opened the front suction opening of the suction tool for floors concerning a 1st embodiment. It is a vertical sectional view of the suction tool for floors according to the first embodiment in a state where the front suction port is opened. It is a top view of the suction tool for floors concerning a 1st embodiment. It is a perspective view of the shutter used with the floor suction inlet concerning 1st Embodiment. It is a vertical sectional view of the suction tool for floors explaining the point which should be considered in a 1st embodiment. It is a vertical sectional view of the floor suction tool according to the second embodiment. It is a perspective view of the shutter used with the suction inlet for floors concerning 2nd Embodiment. It is the perspective view which looked at the shutter of FIG. 10 from a different angle. It is a vertical sectional view of the floor suction tool according to the third embodiment. It is a perspective view of the shutter used with the suction inlet for floors concerning 3rd Embodiment. It is a perspective view of the shutter of the suction tool for floors concerning 4th Embodiment. It is a vertical sectional view of the floor suction tool according to the fifth embodiment. It is sectional drawing of the bumper part of the shutter obtained along line AA of FIG. It is a vertical sectional view of a floor suction tool according to a sixth embodiment. FIG. 17 is a vertical sectional view of a floor suction tool according to a sixth embodiment, in which the shutter angle is different from that in FIG. 17. It is a fragmentary sectional view of the suction tool for floors which acquired the section from the direction which differs 90 degrees from Drawing 17 and Drawing 18. It is a horizontal sectional view of the suction tool for floors concerning a 7th embodiment. It is a vertical sectional view of the floor suction tool according to the seventh embodiment. It is a figure which shows the position of the transmission pulley in the state of FIG. It is a vertical sectional view of the suction tool for floors concerning a 7th embodiment, and the position of a shutter is different from FIG. It is a figure which shows the position of the transmission pulley in the state of FIG. It is a vertical sectional view of the floor suction tool according to the eighth embodiment. It is a vertical sectional view of the floor suction tool according to the eighth embodiment, and the position of the shutter is different from that in FIG. It is a horizontal sectional view of the suction tool for floors concerning an 8th embodiment. It is a vertical sectional view showing other possible configurations of the floor suction tool. It is a side view which shows the example of a conventional structure of the suction tool for floors. It is a top view which shows the conventional structural example of the suction tool for floors.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor suction tool 10 Main body case 11 Connection pipe 15 Suction port 16 Rotating brush 17 Front surface suction port 18 Shutter 19 Supporting shaft 20 Bumper part 21 Illumination part 22 Housing 23 LED lamp (light source)
24 cover 26 hole 27 notch 28 transparent plate part 29 concave lens 31 electric motor 40 speed change mechanism 50 switch (detection device)

Claims (10)

In the main body case having a suction port on the bottom surface, a rotating brush that rotates with a driving source is arranged facing the suction port, and the upper surface of the main body case is provided with an illumination unit that illuminates the front. In floor suction tools,
The suction port is extended to the front of the main body case to form a front suction port, and the rotary brush is allowed to face the front suction port, and the front suction port is provided with a flip-up shutter that closes it. The floor suction tool is characterized in that when the angle is changed to open the front suction port, the shutter is displaced to a position that protects the illumination unit from obstacles ahead.   2. The floor suction according to claim 1, wherein a part of the shutter becomes a bumper part protruding forward, and when the shutter opens the front suction port, the bumper part turns around in front of the illumination part. Ingredients.   The floor suction tool according to claim 2, wherein the bumper part is formed with a hole or a notch through which light emitted by the illumination part is transmitted.   The floor suction tool according to claim 2, wherein the bumper portion is provided with a transparent plate portion that transmits the light projected by the illumination portion.   The floor suction tool according to claim 4, wherein the transparent plate portion is a concave lens that refracts and diffuses the light projected by the illumination unit.   The floor suction according to any one of claims 1 to 5, wherein when the bumper part hits an obstacle in front and receives pressure, a moment in a direction of opening the front suction port acts on the shutter. Ingredients.   The floor suction tool according to any one of claims 1 to 5, wherein the shutter is angle-changed to an angle at which the front suction port is closed or an angle at which the shutter is opened by power.   The floor according to any one of claims 1 to 7, wherein a transmission mechanism is provided between the rotating brush and the drive source, and the transmission mechanism is shifted by opening and closing the shutter. Suction tool.   9. The detector according to claim 1, further comprising a detection device that detects an open / closed state of the shutter and transmits the detection signal to a vacuum cleaner to which the floor suction tool is connected. The floor suction tool described in 1.   It is a vacuum cleaner which connects the floor suction tool of Claim 9, Comprising: Based on the detection signal from the said detection apparatus, the control which changes the rotation speed of the said rotation brush according to the opening / closing state of the said shutter is performed. An electric vacuum cleaner.

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