JP2002000512A - Vacuum cleaner and its suction body - Google Patents

Abstract

(57) [Summary] [Problem] To provide a suction port body of a vacuum cleaner which can ensure the opening state of a dust suction port with a simple configuration and efficiently suck dust. SOLUTION: A suction port 30 is opened on the lower surface, and a dust suction port 37 communicating with the suction chamber 31 is formed on the front surface of a case body 24 which defines a suction chamber 31 for accommodating a rotary cleaning body 67. A sliding plate whose leading edge projects forward from the bottom surface of the case body 24 toward the front, and has a running surface 38 on the lower surface that is substantially parallel to the floor surface, and forms a lower edge of the dust suction port 37 on the upper surface. A part 39 is provided. An opening / closing body 45 rotatably supported by a rotating shaft 46 and opening and closing the dust suction port 37 with an opening / closing plate 47 is provided. Case body 24 on front of opening / closing plate 47
And a projection 49 protruding forward from the outermost periphery. Dust port
37 is always closed by the closing holding means. When the projection comes into contact with the wall surface, the opening / closing plate 47 rotates and the dust suction port 37 is opened, and the dust on the wall side is sucked. The hair of a carpet or the like does not close the dust suction port 37 which is pressed and opened by the sliding portion 39.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body for a vacuum cleaner having a suction port opened on the lower surface and having a dust suction port opened by contacting a surface intersecting the surface to be cleaned, and the vacuum cleaner. The present invention relates to a vacuum cleaner having a suction port body.

[0002]

2. Description of the Related Art Conventionally, various configurations described in Japanese Utility Model Publication No. 61-37394 and Japanese Patent Application Laid-Open No. 1-118826 have been known as a suction port body of this kind of vacuum cleaner.

[0003] Japanese Patent Publication No. 61-37394 discloses a suction chamber in which a suction port for sucking dust together with air is opened on a lower surface opposite to a floor surface to be cleaned, on the front side in the traveling direction. It has a case body. On the front side of the case body, a dust suction port is cut out across the suction port. In addition, the bumper attached to the peripheral surface including at least the front surface of the case body is integrally provided with a tongue-shaped seal lip covering the dust suction port and having a lower end edge at a free end. Is provided with a protruding part whose tip protrudes outward from the outermost periphery of the case body including the bumper.When the protruding part contacts the furniture or the wall, the seal lip is elastically deformed to open the dust suction port, and the furniture or wall A configuration is adopted in which dust is sucked from the dust suction port.

Japanese Patent Application Laid-Open No. 1-118826 discloses a case body having a suction chamber having a suction port opened on a lower surface facing a floor surface to be cleaned and formed in a front side in a traveling direction. ing. In addition, a concave portion that opens forward and downward in the running direction and communicates with the suction port is provided on the front lower surface of the case body. Also, in the case body,
A protruding portion is provided on the front surface, the protruding portion being protruded by a biasing means such as a spring so that the distal end portion can advance and retreat. Further, the case body is provided with a tongue-shaped seal lip portion that covers the front side of the concave portion, and the projecting portion is rotated by the projecting portion that retreats when it comes into contact with a wall surface or furniture, and is formed on the seal lip portion. An opening / closing body that opens the front side of the recess that is covered by the cover is provided, and a configuration is adopted in which dust is sucked into the suction port from the front side of the opening that opens by rotation of the opening / closing body.

[0005]

However, the above-mentioned Japanese Utility Model Publication No. 61-37394 and Japanese Patent Application Laid-Open No. 1-18181.
In the suction port body of the conventional vacuum cleaner described in Japanese Patent Publication No. 26 and the like, since the lower end of the opening that is opened when it comes into contact with furniture or a wall surface is opened, for example, when cleaning a carpet with a long hair, etc. In addition, there is a possibility that the hair of the carpet enters the opening and closes the opening, so that the dust on the furniture and the wall cannot be sufficiently absorbed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a vacuum cleaner capable of ensuring an open state of a dust suction port with a simple configuration and efficiently sucking dust, and a suction port body thereof. And

[0007]

According to a first aspect of the present invention, there is provided a vacuum cleaner including a case body having a suction chamber having a suction opening on a lower surface facing a surface to be cleaned, A sliding door provided in communication with the suction chamber and opening toward the outer periphery, and a sliding surface provided in the case body and forming a lower edge of the opening of the dust opening and having a running surface on the lower surface facing the surface to be cleaned; And an opening / closing body provided in the case body and closing the opening so as to be able to open by contacting the dust suction port with a surface intersecting with the surface to be cleaned.

[0008] Then, a dust suction port having a lower edge formed by a sliding portion of the case body having a running surface opposed to the surface to be cleaned on the lower surface is brought into contact with a surface intersecting the surface to be cleaned by the opening / closing body. For example, when the floor is cleaned, the dust suction port is closed so that a negative pressure state with respect to the atmospheric pressure in the suction chamber is secured, so that dust on the floor surface is efficiently sucked from the suction port, and the furniture is cleaned. When cleaning the side of a carpet or a wall, the sliding part prevents the hair of the carpet from entering the dust suction port, and an air path is formed from the dust suction port that opens to the surface that intersects the surface to be cleaned to the surface to be cleaned. It is difficult to absorb dust from the mouth.For example, dust from furniture and walls located on the front side of the case body is reliably sucked in.Therefore, with a simple configuration that provides a sliding part, it can sufficiently absorb dust even on the floor and furniture and walls, improving cleaning efficiency. improves.

[0009] The suction opening of the vacuum cleaner according to claim 2 is
2. The suction opening of the vacuum cleaner according to claim 1, wherein the opening / closing body has a distal end projecting outward from an outer periphery of the case body and coming into contact with a surface intersecting with the surface to be cleaned, thereby opening the dust suction opening. It is provided with.

[0010] The opening and closing body is provided with a protruding part whose tip projects outward from the outer periphery of the case body and abuts on a surface intersecting with the surface to be cleaned, thereby opening the dust suction port. A configuration that opens the dust suction port by contacting the surface that intersects with the cleaning surface is obtained, and it is necessary to operate the separate operation by reliably sucking dust from furniture and walls located on the front side of the case body that is difficult to suck dust from the suction port. There is no dust opening, and the cleaning performance is improved.

The suction body of the vacuum cleaner according to claim 3 is
3. The suction port body of the vacuum cleaner according to claim 1, wherein the case body is formed in a rectangular shape that is horizontally long with respect to a traveling direction, and the dust suction port is formed in a longitudinal direction on a front surface of the case body in a traveling direction. It is provided in.

[0012] By providing a dust suction port longitudinally in the longitudinal direction on the front side in the running direction of the case body formed in a rectangular shape that is horizontally long with respect to the running direction, for example, the case body that is difficult to absorb dust from the suction port is provided. Dust on furniture and walls near the front side is reliably absorbed over a wide area, and cleaning efficiency is improved.

The suction body of the vacuum cleaner according to claim 4 is
The suction opening of the vacuum cleaner according to any one of claims 1 to 3, wherein the opening / closing body includes a closing / holding unit that constantly holds the dust suction opening in a closed state.

By keeping the opening / closing body closed at all times by the closing / holding means, for example, when sucking dust on furniture or a wall located on the front side of the case body which is difficult to suck dust from the suction opening. It is only necessary to open the dust suction port to suck dust, and when cleaning the normal floor surface, the negative pressure against the atmospheric pressure in the suction chamber is secured without leaking from the closed dust suction port, and the dust suction efficiency from the suction port is And the cleaning efficiency is improved.

[0015] The suction opening of the vacuum cleaner according to claim 5 is
The suction port body of a vacuum cleaner according to any one of claims 1 to 4, wherein a plurality of dust suction ports are formed, and the case body is located between the dust suction ports and is curved from a lower surface to a peripheral edge and is continuously curved. It is provided with.

By providing a curved surface that is curved from the lower surface of the case body to the peripheral edge thereof and is located between the plurality of opened dust suction ports, for example, an uneven surface to be cleaned such as a carpet with long hair is used. Even in the case of cleaning, the unevenness of the surface to be cleaned is prevented from being caught on the lower edge of the dust suction port, so that the running performance of the case body is improved, and the cleaning workability is improved.

According to a sixth aspect of the present invention, there is provided a vacuum cleaner comprising a vacuum cleaner main body and a suction port of the vacuum cleaner according to any one of the first to fifth aspects connected to the vacuum cleaner main body. .

The cleaning device according to any one of claims 1 to 5, wherein the suction efficiency is improved by sufficiently absorbing dust even on the floor, furniture and walls with a simple structure. The performance is improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a vacuum cleaner according to an embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, reference numeral 1 denotes a cleaner main body. The cleaner main body 1 includes a lower body case 2a having an open upper surface, and an upper body case 2b for closing the rear upper surface of the lower body case 2a. The main body case 2 has a front upper surface opened by being sandwiched and joined with a bumper (not shown) to a peripheral edge including. The cleaner body 1 rotatably supports a lid 4 that closes the upper surface of the front side of the body case 2 so as to be openable and closable. The main body case 2 is provided with a rotatable revolving wheel (not shown) on the front lower surface in the traveling direction, and a large-diameter driven wheel 6 is rotatably provided on the rear side surface of the main body case 2. The turning wheel and the driven wheel 6 can travel on a floor surface to be cleaned.

In the cleaner body 1, an electric blower chamber (not shown) accommodating the electric blower 7 is formed on the rear side, and communicates with the suction side of the electric blower 7 and is open at the top to open the lid. A dust collection chamber 8 that is opened and closed by the body 4 and accommodates a dust collection filter is formed on the front side. Further, on the front side of the cleaner body 1, there is formed a connection port 10 which opens toward the dust collection chamber 8 and to which a hose 9 is detachably connected.

The hose 9 has a flexible hose body 11.
A connection pipe 12 provided at one end of the hose body 11 and detachably inserted and connected to the connection port 10 of the cleaner body 1;
A grip 15 is provided at the other end of the hose body 11 and is connected to the suction port body 14 via the extension pipe 13. And
An operating means 17 having various switches 16 and 16 for setting and operating a driving state of the electric blower 7 and the like is provided in the gripping portion 15.

On the other hand, as shown in FIGS. 3 to 6, the suction port main body 14 has a rectangular shape which is oblong in the running direction which is the front-back direction, and is made of acrylonitrile-butadiene-styrene (AB).
S) Lower case with open upper surface made of synthetic resin such as resin
21 and an upper case 22 that covers the upper opening at the upper part of the lower case 21 and opens the lower surface of the same material, and a soft member buffer 23 along the peripheral surface including the front surfaces of the lower case 21 and the upper case 22. And has a convex-shaped case body 24 whose rear substantially approximate center protrudes rearward.

The lower case 21 has a rib lower part 25a substantially vertically on the upper surface, the upper case 22 has a rib upper part 25b whose lower end edge is joined to the rib lower part 25a substantially vertically on the lower surface, and the case body 24 has The rib lower part 25a and the rib upper part 25b are formed in a convex shape with a horizontally long rectangular suction part 26 and a pair of housing parts 27, 27 projecting rearward substantially at the center of the rear part of the suction part 26. Further, inside the suction part 26, a suction chamber 31 having a rib lower part 25a and a rib upper part 25b, which is located horizontally long on the front side and has an opening 30 formed on the lower surface of the lower case 21, is formed.
A drive transmission chamber 32 defined and formed at one end of the motor chamber, and a motor chamber defined and formed at a rear end of the suction chamber 31 at one end.
33, and a circuit room 34 formed at the rear end of the suction chamber 31 on the other end side. In addition, the lower rib 25a
At the approximate center of the rib upper portion 25b, notch holding concave portions 35a and 35b formed in opposing concave shapes are provided, respectively.

Further, the lower case 21 is formed in a convex shape by a suction lower part 21a constituting the lower surface of the suction part 26 and a housing part 27 provided integrally with a rear part of the suction lower part 21a. I have. A plurality of, for example, two dust suction ports 37, 37, which are long in the longitudinal direction of the case body, are formed in the front part of the suction lower part 21a. As shown in FIG. 1, below the dust suction ports 37, 37, the leading edge continuously protrudes upward from the bottom surface of the suction lower portion 21a toward the front, and the lower surface has a cleaning surface. A sliding portion 39 having a running surface 38 substantially parallel to a certain floor surface and constituting a lower edge of a dust suction port 37 on an upper surface is provided. In addition, the front edge of the suction lower portion 21a is located between the sliding portions 39, 39, and the leading edge thereof is located at the suction lower portion.
Similarly to the side of 21a, there is provided a guide portion 41 that curves upward and protrudes and has a warped surface 40 on the outer surface side. In addition,
The lower edge of the leading end of the sliding portion 39 is provided with a chamfer 42 in an arc shape.

At the front of the suction lower portion 21a, a support rib 44 having a shaft support concave portion 43 whose upper edge is cut off in a substantially semicircular shape.
Are provided. An opening / closing body 45 that opens and closes the dust suction port 37 is provided in the shaft supporting recess 43 of the support rib 44. The opening / closing body 45 includes a rotating shaft 46 rotatably supported by the shaft supporting recess 43 of the support rib 44 in a state where the axial direction is substantially along the longitudinal direction of the case body 24. The rotating shaft 46 is integrally provided with an opening / closing plate 47 for opening and closing the dust suction port 37. The opening / closing plate 47 is formed in a substantially plate shape in which a substantially cylindrical shaft support portion 48 for fitting the rotary shaft 46 is provided at an upper end edge, and a lower end edge is curved toward the suction chamber 31 at the rear. Further, a plate-like projection 49 projecting substantially vertically toward the front is provided on the front surface of the opening / closing plate 47 opposite to the side where the lower edge is curved. The opening / closing body 45 is always closed by a closing / holding means such as a not-shown torsion coil spring supported by the rotating shaft 46 as shown in FIG.
47 is urged to close the dust suction port 37, and the projection 49 is held in a state of protruding forward from the buffer 23 located at the outermost periphery of the case body 24.

On the other hand, a driven front wheel chamber 51 in which a driven front wheel (not shown) is rotatably supported is formed at both front ends of the suction lower portion 21a of the lower case 21. Also, the lower case 21
A pair of housing portions 27, 27 are rotatably supported so that both ends of a wheel shaft 53 having a driven rear wheel 52 are bridged.

The case 24 has a housing 27,
A connection pipe portion 55 is provided between the lower case 21 and the lower case 21 and the upper case 22 to partition and define an air passage chamber 54 communicating with the rear substantially center of the suction chamber 31. This connecting pipe section 55
Has a shaft support pipe portion 57 having a cylindrical suction tube portion 56 whose one end in the axial direction gradually becomes larger in a trumpet shape toward the suction chamber 31. In addition, the connecting pipe portion 55 protrudes outward from the outer peripheral edge of the suction pipe portion 56 in a flange shape, and each peripheral edge is a lower case.
Rib lower part 25a and rib upper part 25b of 21 and upper case 22
The mounting plate portion 58 is engaged with each of the notch holding concave portions 35a and 35b. Then, the connection pipe portion 55 is such that the suction pipe portion 56 at one end side of the shaft support pipe portion 57 expands in a trumpet shape toward the suction chamber 31 and the other end side projects substantially rearward from the case body 24, The axial direction of the shaft support pipe portion 57 is disposed on the case body 24 along the front-rear direction and the horizontal direction.

Further, a joint portion 61 is attached to the shaft support tube portion 57 of the connecting tube portion 55 as a rotating tube which is rotatably fitted. In addition, a communication pipe in which a rotary shaft 62 provided at one end is connected to the extension pipe 13 and the hose 9 so that the other end thereof is rotatable vertically in the joint 61. A communication pipe 63 is attached, and the joint section 61 and the communication pipe section 63 constitute a connection pipe 64.

Further, in the case body 24, the suction chamber 31 is rotatably supported by bearings 66, 66 provided at positions where the rib lower part 25 a and the rib upper part 25 b are joined at both ends in the left-right direction of the suction chamber 31. A rotating cleaning body 67 as a rotating body is provided. The rotary cleaning body 67 includes a shaft 69 provided with a wall-shaped blade 68 and a cloth blade in a spiral shape on the outer peripheral surface. At both ends of the shaft 69, a rotatable support member 71 rotatably provided and detachably attached to the bearing 66 is rotatably provided, and a pulley 72 is integrally provided at one end. Have been.

Further, in the motor room 33 of the case body 24,
The output shaft (not shown) provided with the output pulley 75 is
The electric motor 76 is disposed in a state where the motor 76 is located. And
An endless belt-shaped drive transmission member 78 is wound around the output pulley 75 with the pulley 72 of the rotary cleaning body 67, and the rotary cleaning body 67 is rotated by the drive of the electric motor 76.

In the circuit chamber 34 of the case 24, a floor detecting means 80 is provided. This floor surface detection means 80
An arm that pivotally supports a rotating body 81 that rotates while touching the floor at the tip
The base end of 82 is pivotally supported so that the rotating body 81 moves up and down with respect to the lower surface of the case body 24. A switch means 83 is provided for detecting that the case body 24 has been lifted by rotating the arm 82 so that the rotating body 81 is located at the lowest position when the case body 24 separates from the floor surface. Have been. The arm 82 has a holding arm 84 that is bent in a substantially U shape.
Are provided integrally, and a sphere (not shown) is disposed above the holding arm portion 84 so as to be movable in the vertical direction. Then, in a state where the lower surface of the case body 24 is turned upward, the sphere moves to the upper case 22 side, the tip of the holding arm 84 abuts on the sphere, and the rotating body 81 provided on the arm 82
Does not move into the case body 24 due to its own weight.
24 is held at the lowest position similar to the lowest position of the lifted state, and the switch means 83 detects that it has been lifted from the floor surface.

Next, the operation of the above embodiment will be described.

When cleaning, an extension pipe is attached to the cleaner body 1.
The suction port body 14 is connected via the hose 13 and the hose 13. In this state, the electric blower 7 and the electric motor are appropriately operated by operating the switch 16 of the operating means 17 while holding the grip 15 of the hose 9.
76 is driven in a desired driving state, and the grip portion 15 is pushed to move the suction port main body 14 back and forth on the floor surface.

Then, by driving the electric blower 7, the dust on the floor surface scraped out by the rotary cleaning body 67 which is appropriately rotated by the driving of the electric motor 76 is sucked together with air from the suction port 30, and the extension pipe 13 and the hose 9 are removed. The air flows into the dust collecting bag mounted in the dust collecting chamber 8 of the cleaner body 1 through the dust collecting bag. Further, the air from which dust is separated and removed by the dust collecting bag flows into the electric blower room from the electric blower 7 and is exhausted to the outside air through an exhaust port (not shown) provided in the main body case 2.

In the state where the cleaning is performed by running on the floor surface, the opening and closing plate 47 of the opening and closing body 45 is urged by the closing and holding means.
Is in a state where the dust suction port 37 is closed. For this reason, a leak in which air is sucked in from the dust suction port 37 is prevented, and only the suction port 30 facing the floor surface is opened, so that a negative pressure state with respect to the atmospheric pressure on the lower surface of the case body 24 is secured, and the efficiency is improved. Dust is sucked together with air from the suction port 30.

When the floor surface to be cleaned has long hair such as a carpet, when the suction port body 14 is advanced,
The warp surface 40 located at the front lower edge of 14 and the chamfer 42 of the sliding portion 39 guide the hair of the carpet, preventing the hair of the carpet from being caught on the front lower edge of the suction port body 14 and sucking. The mouth body 14 runs smoothly.

Further, when cleaning the vicinity of a portion having a surface that rises crossing the floor surface, such as a peripheral edge on which furniture is placed, a wall, or the like, when the front surface of the suction port main body 14 abuts on furniture or a wall surface. The tip of the projection 49 of the opening / closing body 45 located at the forefront of the suction port main body 14 first contacts. Then, as shown in FIG. 7, the opening / closing plate 47 rotates about the rotating shaft 46 pivotally supported by the upper end edge against the urging of the closing and holding means, and the dust suction port 37 is rotated.
Open.

In the case where the floor surface is a carpet with a long bristle foot or the like, the lower edge of the dust suction port 37 is constituted by a sliding portion 39, and the hair of the carpet is pressed down by the sliding portion 39 so that the dust suction port is in a state.
As a result, the dust suction port 37 is kept open without entering. Then, the air path is formed from the floor surface to the dust inlet 37 by the furniture and the wall surface, and the dust at the time of the furniture and the wall is exhausted by the dust inlet 37.
Air from the suction port 30 and the suction chamber 31
And flows into the dust collecting bag mounted in the dust collecting chamber 8 of the cleaner body 1 via the extension pipe 13 and the hose 9 to be captured.

When the suction port main body 14 is separated from the furniture or the wall surface, the opening / closing plate 47 closes the dust suction port 37 as shown in FIG. 1 again by the urging of the closing holding means, and only the suction port 30 is opened. A state in which a negative pressure state with respect to the atmospheric pressure on the lower surface of the suction port main body 14 is maintained.

When the hose 9 is placed on the floor,
Alternatively, removal of dust clogged in the suction port 30 and the rotation cleaning body 67
In order to remove thread debris entangled with the
When the lower surface of the floor is separated from the floor, the rotating body of the floor detecting means 80
The arm 82 is rotated so that the rotating body 81 is positioned at the lowest position with the 81 separated from the floor surface, the switch means 83 is turned on, and a circuit board (not shown) provided on the cleaner main body 1 is turned on. When the control means mounted determines that the lower surface of the suction port main body 14 is separated from the floor surface, the driving of the electric motor 76 is stopped, and the rotation of the rotary cleaning body 67 is stopped.

As described above, the lower edge is constituted by the sliding portion 39 having an opening on the front surface of the suction port main body 14 separately from the suction port 30 and having a running surface 38 on the lower surface facing the floor surface to be cleaned. The dust suction port 37 is provided and the dust suction port 37 is opened and closed by the opening / closing body 45, so that even if the floor surface to be cleaned has a long fluff, the hair of the carpet enters the dust suction port 37 and is closed by the sliding portion 39. It is possible to efficiently absorb dust from the dust suction port 37 having an opening secured by a simple structure in which the sliding portion 39 is provided, thereby improving the cleaning efficiency.

Then, the opening / closing body 45 is brought into contact with a surface intersecting the floor surface to be cleaned, such as furniture or a wall, so that the dust suction port is formed.
Because the opening 37 is formed, an air path is formed from the floor surface to the dust suction port 37 by a surface that intersects with the floor surface, and the dust on the front side of the case body 24 where the dust suction port 37 that is difficult to suck dust from the suction port 30 is opened. Dust can be efficiently and reliably absorbed, and the cleaning performance can be improved.

Further, since the opening / closing body 45 is provided with a projection 49 whose tip projects outward from the outer periphery of the case body 24, it can be easily constructed when it comes into contact with a surface such as furniture or a wall surface which intersects a floor surface. A configuration in which the dust suction port 37 is opened can be easily obtained, and dust located on the front side of the case body 24 in which the dust suction port 37 is difficult to be sucked from the suction port 30 can be efficiently and reliably sucked, and the cleaning performance can be improved.

Further, since the dust suction port 37 is provided in the front side of the case body 24 formed in a horizontally long rectangular shape in the longitudinal direction in a longitudinal direction, the dust suction area from the dust suction port 37 on the front side is increased with a simple structure, and the suction port 30 is formed. Dust present in almost the entire area on the front side of the case body 24 where the dust suction port 37, which hardly absorbs dust, is opened can be efficiently and reliably sucked, and the cleanability can be improved.

In addition, since the opening / closing member 45 is always provided with the closing / holding means for closing the dust suction port 37 and opening the dust suction port 37 only when the opening / closing body 45 comes into contact with furniture or a wall surface, the suction port 37 is driven on a normal floor. In the state in which dust is sucked and cleaned from the port 30, a state in which the dust suction port 37 is closed and leaks is prevented, and a negative pressure state with respect to the atmospheric pressure on the lower surface of the case body 24 where the suction port 30 is opened can be secured. The efficiency of absorbing dust from the air can be improved, and the cleaning performance can be improved.

Since a plurality of the dust suction ports 37 are formed and a continuous curved surface 40 is formed between the dust suction ports 37 and 37 from the lower surface of the case body 24 to the peripheral edge, so that irregularities such as a carpet with a long bristle foot can be eliminated. Even when cleaning the floor surface, which is the surface to be cleaned, the carpet hair is guided by the warped surface 40 and pressed down, so that the warped surface 40 runs over the carpet hair, so that the carpet hair is sliding. The case body can be prevented from getting caught on the tip of 39.
24 running performance is improved and cleaning workability can be improved.

Further, since the chamfer 42 is provided on the lower edge of the leading end of the sliding portion 39, the hair of the carpet is guided hardly as in the case of the warped surface 40, and the carpet is hardly caught. Can be improved.

Further, since the dust suction port 37 is provided in the lower case 21 and positioned below the buffer 23, the projection 49 of the opening / closing body 45 comes into contact with furniture or a wall surface, and the opening / closing plate 47 is rotated. In the state in which the dust suction port 37 is open, the buffer 23 is located at the forefront of the case body 24, so that the buffer 23 contacts the furniture and the wall surface and the upper portion of the dust suction port 37 contacts the furniture and the wall surface. In the covered state, a negative pressure state with respect to the atmospheric pressure of the air passage formed from the floor surface to the dust suction port 37 on the furniture and the wall surface is secured, and the dust suction efficiency from the dust suction port 37 is improved, so that dust is reliably collected. And cleanability can be improved.

Further, a sliding portion constituting a lower edge of the dust suction port 37
Since the plate 39 is formed in a plate shape, the distance from the dust suction port 37 to the floor surface can be minimized, dust can be efficiently absorbed from the dust suction port 37, and the vertical dimension of the suction port main body 14 can be shortened, and the size can be reduced.

In the above embodiment, not only the vacuum cleaner of the canister type, but also the upright type in which the suction main body 14 is formed directly on the lower surface of the cleaner main body 1 or the cleaner main body 1 and the suction main body 14 The present invention can also be applied to a self-propelled vacuum cleaner, a hand-held type, and the like in which is integrated.

In the description, the dust suction port 37 is opened by abutting on a surface intersecting the floor surface such as furniture or a wall surface. However, for example, the setting operation of the operation means 17 provided at the hand of the hose 9 allows the dust suction port 37 to be opened. The dust suction port 37 may be appropriately opened to suck dust.

Also, when it comes into contact with furniture or a wall surface, the dust suction port 37
The opening is not limited to the structure in which the protrusion 49 is integrally provided. For example, by recognizing the contact with a sensor or the like, it is rotated by a solenoid or a motor provided separately to electrically Opening or providing a rod-shaped body with the tip part capable of moving forward and backward, and opening and closing the opening / closing plate 47 and the rotating shaft 46 connected to this rod-shaped body by retreating the rod-shaped body to open it mechanically, etc. Configuration.

Although the dust suction port 37 is formed in the front surface of the case body 24, it may be formed in the side surface.

Further, although a plurality of openings are formed, only one may be provided.

Although the opening is formed in a horizontally long shape, for example, a plurality of openings having a circular shape may be provided in parallel or in a lattice.

The dust suction port 37 is always opened by the closing and holding means such as a torsion coil spring. However, as described above, the dust suction port 37 may be arbitrarily opened. An elastic member such as rubber may be used, or, as described above, may be appropriately opened and closed by a solenoid or an electric motor.

The sliding portion 39 is not limited to a plate-like shape.
A warped surface 40 may be provided on the lower surface of the case body 24 from the tip of the 39. By providing the warped surface 40 from the tip of the sliding portion 39, the traveling performance can be further improved.

In the above description, the rotary cleaning body 67 and the electric motor 76 are provided, but these may not be provided. Also, instead of rotating the cleaning body 67 to run the suction port body 14 or to rotate the running wheels to assist the running with the electric motor 76,
Instead of the electric motor 76, the rotating cleaning body 67 may be rotated by an intake flow.

[0060]

According to the suction opening of the vacuum cleaner according to the first aspect, the lower edge of the dust suction opening is closed by the opening / closing body so as to be openable when the opening / closing body comes into contact with the surface intersecting the surface to be cleaned. In order to constitute a sliding portion of the case body having a running surface facing the surface to be cleaned on the lower surface, for example, when cleaning the floor surface, the dust suction port is closed and a negative pressure state with respect to the atmospheric pressure in the suction chamber is set. Secures and efficiently sucks dust from the floor surface through the suction port, and when cleaning furniture and walls, the sliding part prevents the hair of the carpet from entering the dust suction port and secures the opening. The air path is constructed by the air, and it is difficult to absorb dust from the suction port.For example, dust from furniture and walls is reliably sucked in, so a simple structure with a sliding part can absorb dust sufficiently on the floor, furniture and walls, and cleaning efficiency Can be improved. Dust can be sucked from the dust suction port, and cleaning efficiency can be improved.

According to the suction port of the vacuum cleaner according to the second aspect, in addition to the effect of the suction port of the vacuum cleaner according to the first aspect, the end of the opening / closing body projects outward from the outer periphery of the case body. In order to provide a projection, a simple configuration can be used to easily open the dust suction port by, for example, contacting the surface that intersects the surface to be cleaned. Dust can be sucked, and the dust suction port can be opened without a separate operation, thereby improving the cleaning performance.

According to the suction port of the vacuum cleaner according to the third aspect, in addition to the effect of the suction port of the vacuum cleaner according to the first or second aspect, the case body having a rectangular shape that is horizontally long in the running direction is provided. Because the dust suction port is provided in the longitudinal direction in the longitudinal direction in the front side in the traveling direction, for example, dust can be reliably absorbed in a wide range from the furniture or the wall located on the front side of the case body which is difficult to absorb dust from the suction port,
Cleaning efficiency can be improved.

According to the suction port of the vacuum cleaner according to the fourth aspect, in addition to the effect of the suction port of the vacuum cleaner according to any one of the first to third aspects, the dust suction port is always closed by the opening / closing body. In order to provide a closed holding means for holding in a state, for example, when sucking dust on furniture or a wall that is difficult to suck dust from the suction port, the dust suction port is opened to suck dust, and when cleaning a normal floor surface, the suction chamber is used. Negative pressure with respect to the atmospheric pressure can be secured without leaking from the dust suction port closed by the closing holding means,
The efficiency of dust suction from the suction port is improved, and the cleaning efficiency can be improved.

According to the suction port of the vacuum cleaner according to the fifth aspect, in addition to the effect of the suction port of the vacuum cleaner according to any one of the first to fourth aspects, a case body is provided between the plurality of opened dust suction ports. In order to provide a curved surface that is curved and continuous from the lower surface to the peripheral edge of the dust suction port, the curved surface guides the unevenness of the surface to be cleaned even when cleaning an uneven surface to be cleaned such as a carpet with long hairs. It is possible to prevent the case body from being caught on the lower edge portion, to improve the running performance of the case body, and to improve the cleaning workability.

According to the electric vacuum cleaner of the sixth aspect, the electric cleaning device according to any one of the first to fifth aspects improves the cleaning efficiency with a simple structure, for example, by sufficiently absorbing dust even on the floor surface, furniture and near the wall. Since the suction port of the machine is provided, the cleaning performance can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a suction port main body in the vicinity of a closed dust suction port showing an embodiment of the present invention.

FIG. 2 is a perspective view showing the electric vacuum cleaner.

FIG. 3 is a plan view of the suction port body with the upper case removed.

FIG. 4 is a front view of the suction port main body.

FIG. 5 is a bottom view of the suction port main body.

FIG. 6 is a side sectional view of the suction port main body.

FIG. 7 is a cross-sectional view showing the vicinity of an opened dust suction port of the suction port main body.

[Explanation of symbols]

 1 Vacuum cleaner body 14 Suction port body 24 Case body 30 Suction port 31 Suction chamber 37 Dust port 38 Running surface 39 Sliding section 40 Warp surface 45 Opening / closing body 49 Projection

Claims (6)

[Claims] 1. A case body having a suction chamber having an opening on a lower surface facing a surface to be cleaned, and a dust opening provided in the case body in communication with the suction chamber and opening outwardly. A sliding portion provided on the case body, constituting a lower edge of the opening of the dust suction port, and having a running surface on a lower surface facing the surface to be cleaned; and An opening / closing body that closes openably by contacting the intersecting surface. 2. An opening / closing body comprising: a projection for projecting outward from an outer periphery of a case body to abut on a surface intersecting with a surface to be cleaned, thereby opening the dust suction port. Item 7. An inlet body for an electric vacuum cleaner according to Item 1. 3. The case body is formed in a rectangular shape that is horizontally long with respect to the traveling direction, and the dust suction port is provided in the front surface of the case body in the traveling direction in a longitudinal direction. 1 or 2
The suction body of the vacuum cleaner described. 4. The suction port body for a vacuum cleaner according to claim 1, wherein the opening / closing body includes a closing / holding unit that constantly holds the dust suction port in a closed state. 5. A case, wherein a plurality of dust suction ports are formed, and the case body has a curved surface which is located between the dust suction ports and is continuous from the lower surface to the peripheral edge.
A suction port body for an electric vacuum cleaner according to any one of claims 4 to 4. 6. A vacuum cleaner comprising: a vacuum cleaner main body; and a suction port of the vacuum cleaner according to claim 1 connected to the vacuum cleaner main body.