JPH11197065A - Vacuum cleaner and its suction hole body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction hole body of a lightweight and compact vacuum cleaner which can scrape efficiently dust. SOLUTION: A rotational cleaning body 51 facing a suction hole 28 is pivoted by a case body 24 the underside of which the suction hole 28 is opened. A pair of air intake vents 60 and 60 positioned on both end part sides in the left and right direction are opened at the front part of the case body 24. A flow adjusting plate 62 which adjusts a suction air flow so as to blow it to the apex edge part of a blade 55 of the outermost periphery of the rotational cleaning body 51 is provided along the inner face of the case body 24. The flow adjusting plate 62 constitutes a trumpet-shaped air suction path 61 wherein the opening area is gradually decreased toward the downstream side. Air is sucked from the air intake vent by driving a motor-driven blower and it blows to the rotational cleaning body 51 through the air suction path 61while flow is adjusted by means of the flow adjusting plate 62 to rotate the rotational cleaning body 51 and to scrape dust. Air suction flow is efficiently blown to the rotational cleaning body 51 to improve torque of the rotational cleaning body 51 and to improve cleaning properties.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner provided with a rotary cleaning body which rotates by an intake air flow, and a suction port body thereof.

[0002]

2. Description of the Related Art Conventionally, as a suction port of this type of vacuum cleaner, for example, the configuration described in Japanese Patent Application Laid-Open No. 9-28630 is known.

[0003] The suction opening of the vacuum cleaner described in Japanese Patent Application Laid-Open No. 9-28630 has a rotatable cleaning body rotatably housed in a case body having an opening on the lower surface. In this rotary cleaning body, an axial air turbine is integrally provided coaxially at both ends in the axial direction, and the axial air turbine is rotated by the intake air from the intake ports opened at the rear ends of the case body. At the same time, the rotary cleaning body rotates to scrape dust on the floor surface and suck the dust from the suction port.

[0004]

However, in the suction port of the conventional vacuum cleaner described in Japanese Patent Application Laid-Open No. 9-28630, since the rotary cleaning member is rotated by the rotation of the axial air turbine, the suction is reduced. The weight and size of the mouth cannot be reduced, and dust on the lower surface corresponding to the axial air turbine cannot be scraped off.

[0005] Therefore, a structure in which an air turbine for rotating the rotary cleaning body is not required and the area that cannot be cleaned by the rotary cleaning body is reduced by directly rotating the rotary cleaning body by blowing the intake air flow onto the rotary cleaning body. Can be considered.

However, in the configuration in which the suction flow is directly blown to the rotary cleaning member, the torque of the rotary cleaning member is not necessarily sufficiently increased, and there is a problem that dust may not be efficiently removed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a lightweight and compact vacuum cleaner capable of efficiently removing dust and a suction port body thereof.

[0008]

According to a first aspect of the present invention, there is provided a vacuum cleaner having a case body having a suction port opened on a lower surface facing a surface to be cleaned and a suction port, and a case body having a suction port. A rotary cleaning member rotatably provided to scrape dust on the surface to be cleaned, the rotary cleaning member being rotated by applying a suction flow from the suction port to the cleaning member, and a cleaning member provided at an opening edge of the suction port; A rectifying plate for forming an intake air passage for supplying the intake air flow toward the outermost periphery of the rotary cleaning body.

A rotary cleaning body is rotatably provided on a case body having an intake port opened on the lower surface opposite to the surface to be cleaned, and a rotary cleaning element is provided on an opening edge of the intake port for supplying an intake air flow to the rotary cleaning body. The air flow is supplied toward the outermost periphery of the cleaning member, and a rectifying plate is formed to form an intake air path that hits the cleaning member. Therefore, the air flow is efficiently supplied to the cleaning member of the rotary cleaning member, and the torque of the rotary cleaning member increases. In addition, there is no need for a separate rotating structure, the size is reduced in weight, the area that cannot be scraped out by the rotating cleaning body is reduced, and the cleaning efficiency is improved.

[0010] The suction opening of the vacuum cleaner according to claim 2 is
In the suction port body of the vacuum cleaner according to claim 1, the straightening plate is provided to protrude inward inside the case body.

Since a rectifying plate for forming an intake air passage for supplying an intake air flow toward the outermost periphery of the rotary cleaning body is protruded inwardly inside the case body, the rectifying plate is used for cleaning furniture or the like during cleaning. It does not hinder the cleaning work such as collision with the air conditioner, improves the appearance, and prevents noise from being generated due to turbulence generated when, for example, a current plate is provided outside the case body.

The suction body of the vacuum cleaner according to claim 3 is
3. The suction opening of the vacuum cleaner according to claim 1, wherein the intake air passage has a smaller cross-sectional area of the air passage toward the downstream side.

[0013] Since the flow straightening plate is provided so that the cross-sectional area of the intake air passage becomes smaller toward the downstream side, the intake air flow is efficiently supplied to the rotary cleaning body with a simple configuration, and the torque of the rotary cleaning body is improved. I do.

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

The suction port of the vacuum cleaner according to any one of claims 1 to 3, wherein the suction flow is efficiently supplied to the rotary cleaning body so that the torque is increased, the weight is reduced, and the cleaning efficiency is improved. Therefore, the cleaning workability is improved.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vacuum cleaner according to an embodiment of the present invention;

In FIG. 12, 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. And a main body case 2 having a front upper surface opened by being joined to and sandwiching a bumper 3 at a peripheral edge including the above. 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 swivel 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 main body 1 can travel on a floor surface to be cleaned with the turning wheel and the driven wheel 6. Further, a handle 7 slidable in a vertical direction is provided at an upper portion of the main body case 2.

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

The hose 8 has a flexible hose body 11.
A connection pipe 12 provided at one end of the hose body 11 and removably inserted and connected to the connection port 9 of the cleaner body 1;
A grip 15 is provided at the other end of the hose body 11 and is connected to a suction port body 14 via an extension pipe 13. The grip 15 is provided with operating means 17 having various switches 16, 16 for setting and operating the driving state of the electric blower.

On the other hand, as shown in FIGS. 1 to 5, the suction port main body 14 is horizontally long in the running direction and has a lower case made of a synthetic resin such as acrylonitrile-butadiene-styrene (ABS). 21 and this lower case
An upper case 22 covering the upper opening at the upper part of the upper part 21 and opening the lower surface of the same material is joined and fixed by sandwiching a buffer member 23 of a soft member along a peripheral surface including a front surface of the lower case 21 and the upper case 22. In addition, the rear case has a convex case body 24 having a substantially central rear portion protruding rearward.

The lower case 21 has a rib 25 substantially vertically on the upper surface, and the case body 24 has a horizontally elongated rectangular suction portion 26 formed by the rib 25 and a pair of shafts protruding rearward substantially at the rear center of the suction portion 26. The support portions 27 are formed in a convex shape. Further, a suction port 28 also serving as a leak port is formed on the lower surface of the suction section 26 of the lower case 21, and a suction chamber 29 is formed inside the suction section 26.

The upper case 22 covers a top surface of the suction chamber 29 and is detachably attached to the lower case 21. The case cover 31 has a substantially semicircular cross section, and a part of the case cover 31 overlaps with the case cover 31. Case cover 32 covering the rear upper surface of lower case 21
It is composed of The case cover 32 covers a part of the rear upper surface of the lower case 21 and forms a shaft support 27. The cover 33 is provided on the cover 33 in series and has a circular shape with the same curvature as the case cover 31. A reinforcing plate portion 34 which is formed in an arc shape and a part of the case lid portion 31 overlaps and covers a substantially central portion of a rear portion of the suction chamber 29, and is located between a pair of shaft support portions 27 and 27 at a substantially central portion of the reinforcing plate portion 34 and is located rearward. And a connecting pipe portion 35 protruding in a substantially cylindrical shape and communicating with the suction chamber 29. The connecting pipe 35 is provided so that the axial direction is substantially horizontal and along the front-back direction.

Further, on both ends of the front part of the lower case 21,
A driven front wheel chamber 37 in which the driven front wheel 36 is rotatably supported is formed. Further, a pair of shaft support portions 27, 27 of the lower case 21 are provided.
, A driven rear wheel chamber 39 in which a driven rear wheel 38 is rotatably supported is formed. The driven rear wheel 38 is provided with a protection sheet (not shown) which is a flexible member such as cloth or an elastic member such as rubber on the outer peripheral surface. And the case body
Reference numeral 24 allows the driven front wheel 36 and the driven rear wheel 38 to travel on a floor surface to be cleaned.

On the other hand, on the inner surface near the front edge of the lower case 21, a pair of locking recesses (not shown) which are concave toward the suction chamber 29 are provided. On the front side edge of the case lid portion 31, a locking claw portion 41 which can be engaged with and disengaged from the locking concave portion of the lower case 21 is provided so as to project therefrom. Further, sliders 42 slidable in the left-right direction are provided at both rear edges of the case cover 31 in the left-right direction, and hook claws 43 are projected from the sliders 42, respectively. Also, the reinforcing plate of the case cover 32
Tongue pieces 44 projecting in the left and right directions are integrally provided on both side edges in the left and right direction of the tongue 34, and the tip ends of these tongue pieces 44 protrude toward the suction chamber 29 in a substantially L-shaped cross-section. Part 31
A key portion 45 is provided so that the hooking claw portion 43 of the slider 42 can be disengaged. Then, by the sliding movement of the slider 42,
The case cover 31 is detachably attached to a case cover 32 that is joined and fixed to the lower case 21.

In the center of the rear part of the case body 24, a communication pipe 47 is disposed between the pair of shaft supports 27, 27.
The communication pipe 47 is connected to a joint 48 rotatably fitted to the connection pipe 35 of the case cover 32 of the upper case 22, and has one end connected to the connection pipe 35 so that the other end is rotatable vertically. It is pivoted. The communication pipe 47 is detachably connected to the cleaner main body 1 via the extension pipe 13 and the hose 8, and the suction port 28 communicates with the connection port 9 of the cleaner main body 1.

Further, a rotary cleaning body 51 rotatably supported by bearings 50 provided at both ends in the left-right direction of the suction chamber 29 is disposed in the case body 24. The rotary cleaning body 51 includes a shaft 52, a shaft support member 53 rotatably provided at both ends of the shaft 52 and removably attached to the bearing 50, a cylindrical portion 54 fitted to the shaft 52, and A blade 55 as a cleaning member integrally provided in a wall shape and spiral shape on the outer peripheral surface of the cylindrical portion 54 and having a tip side warped to one side.
And a blade section 56 having the same. The size of the shaft support members 53 is different from that of the bearing members 50, 50.
Is capable of engaging and disengaging only predetermined shaft support members 53, 53. In addition, a hitting portion 57 that bulges to the opposite side to the warping direction and has a large thickness is provided at the leading edge of the blade 55.

In the rotating cleaning body 51, the upper blades 55 warp toward the front side of the case body 24 and include the rotating shaft core in a state where the shaft supporting members 53 at both ends of the shaft 52 are mounted on the bearings 50. A connecting pipe portion in which a horizontal plane A pivotally supports a communication pipe 47
It is disposed below a plane B including 35 central axes. Further, in the rotary cleaning body 51, the distance C between the outer peripheral edge and the front edge of the suction port 28 is set to be larger than the distance D between the outer peripheral edge and the inner surface of the suction chamber 29. And the rotary cleaning body 51
The driven front wheel 36 and the driven rear wheel 36
The blade 55 is disposed so as to be in contact with the carpet, which is located above the plane formed at 38 and does not contact between the flat floor surfaces of the plate and enters the suction port 28 without unevenness, and enters the suction port 28. You.

The reinforcing plate portion 34 of the case cover portion 32 of the case body 24 is configured such that the rotary cleaning body 51 can be detachably attached to the upper surface of the case body 24 from which the case lid portion 31 is removed. 21 is formed so as to cover only a part of the upper surface. In addition, the suction chamber of the case cover 32 and the case lid 31 is provided.
The inner surface facing 29 is formed in an arc shape so as to be equidistant along the outer periphery of the rotary cleaning body 51.

Further, on the front surface of the upper case 22, a pair of intake ports 60, 60 are formed at both ends in the left-right direction. On the inner edge of the lower end of the intake port 60, the intake flow, which is the flow of the air taken from the intake port 60 toward the upper side of the suction chamber 29, is formed on the inner surface of the case cover 31 of the upper case 22. A rectifying plate 62 that forms an intake air passage 61 that rectifies the air so as to collide with and blow against the tip end portion of the blade 55 that is the outermost periphery of the rotary cleaning body 51 is provided along. In addition, this rectifying plate 62 is such that the intake air path 61 is
Inlet, which is the opening area as the cross-sectional area of the air passage upstream of 61
The opening area, which is the cross-sectional area of the air passage on the downstream side of the intake air passage 61, is smaller than the opening area of the opening 60, and is formed in a trumpet shape. The suction port 60 is located above the horizontal plane A including the rotation axis of the rotary cleaning body 51, and is formed so that the total opening area of the pair is smaller than the opening area of the suction port 28. ing. In addition, the intake port 60, 60
The opening is formed on the front side of the substantially vertical direction passing through the rotation axis of the rotary cleaning body 51 and on the front side of the front end of the rotation radius of the rotary cleaning body 51.

The lower surface of the lower case 21 is provided with a suction port 28.
Are provided at both ends in the left-right direction of the case body and communicate with the outside of the case body 24 and the suction port 28 in the form of concave grooves. Each of the communication grooves 64 has a front surface in the front-rear direction and a vertical plane E including the rotation axis of the rotary cleaning body 51.
It is provided at a more rearward position.

Further, on the lower surface of the lower case 21, as shown in FIG. 1 to FIG. A cleaning body 66 is detachably mounted in the accommodation recess 65.

Bearing portions 67, 67 are provided on both end surfaces in the longitudinal direction, which is the left-right direction, of the housing recess 65. Also, the accommodation recess 65
On the top surface, there is a groove-like step recess along the rear edge.
68 are provided. Note that the stepped recess 68 is provided such that the front side edge is located behind the center of the housing recess 65 in the front-rear direction. Further, a plurality of claw portions 69 projecting inward in a zigzag manner, whose front ends do not face each other, are provided near the front and rear opening edges of the housing recess 65.

The cleaning body 66 has a substantially elongated plate-like pedestal 71.
have. The pedestal portion 71 is a member that can be elastically deformed and has a claw portion in the front-rear direction of the accommodation concave portion 65 in the width direction.
It is formed wider than the distance between 69 and 69. A substantially columnar shaft portion 72 that protrudes along the longitudinal direction and that is rotatably supported by the bearing portion 67 of the housing recess 65 is integrally provided at both ends in the longitudinal direction. As shown in FIG. 11, the pedestal portion 71 has a housing recess in which the front upper edge is the lower surface of the case body 24.
10 and the rear lower edge abuts on the claw portion 69 and the front lower edge abuts on the claw portion 69. As shown in FIG. In the rear rotation in which the front lower edge is in contact with the ceiling surface and the front lower edge is in contact with the claw portion 69 and the rotation is restricted, the shaft is pivotally supported so that the rotation angle of the rear rotation is increased. The pedestal
The 71 does not project from the lower surface of the lower case 21 even when rotated.

Further, on the upper surface of the pedestal portion 71, a projection 73 is formed integrally with the outer peripheral surface of the shaft portion 72 and protrudes in a wall shape along the longitudinal direction in an arc shape having substantially the same curvature. ing. The outer periphery of the protrusion 73 is slidably in contact with the ceiling surface of the housing recess 65 at all times, and the contact position changes when the pedestal portion 71 rotates, and slides on the ceiling surface of the housing recess 65. It is formed so as to protrude.

The lower surface of the pedestal 71 is formed in an arc shape in the front-rear direction, which is the direction of rotation, with a curvature greater than the curvature of the arc about the axis of rotation, which is the center axis of the shaft 72. .
That is, the shaft portion 72 is provided such that the rotation axis of the pedestal portion 71 is shifted from the center corresponding to the curvature of the lower surface of the pedestal portion 71 to a position closer to the lower surface side of the pedestal portion 71. Further, as shown in FIG. 9, at both ends of the lower surface of the pedestal 71, there are provided end mounting recesses 74, which are recessed downward and have a central edge of the pedestal 71 inclined toward the center. In addition, on both sides of the lower surface of the pedestal portion 71, there are provided edge mounting concave portions 75 which are concave portions extending downward along the edges and continuous with the end mounting concave portions 74.

On the lower surface of the pedestal 71, a raised cloth 77 as a wiping member having a raised brush 76 is attached. The raised cloth 77 is attached by, for example, an adhesive or the like in a state in which the raised edges are located at the end mounting recesses 74 and the edge mounting recesses 75, respectively, and the raised brushes 76 are planted substantially perpendicularly to the lower surface of the pedestal 71. , A cleaning body 66 is formed. The cleaning body 66 has a flat surface formed by the driven front wheel 36 and the driven rear wheel 38, in which the pedestal portion 71 does not protrude downward from the lower surface of the case body 24, and the leading end of the raised brush 76 protrudes from the lower surface of the case body 24. The raised end 76 is positioned so as to be in contact with the plate that is a flat floor surface without rotating.

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

At the time of cleaning, the suction port body 14 is connected to the cleaner body 1 via the extension pipe 13 and the hose 8, and the hose 8
The suction port main body 14 is moved forward and backward on the floor surface by pushing and holding the grip portion 15.

Then, by the suction force generated by the drive of the electric blower of the cleaner main body 1, the air is sucked from the suction ports 60, 60 and also from the suction port 28. Here, since the suction port body 14 is placed on the floor surface, the resistance of the air passage from the outside air to the suction chamber 29 from the suction ports 60, 60 passes through the lower surface of the case body 24 from outside. From suction port 28 to suction chamber 29
Smaller than the wind path resistance to the inside
There is a tendency for the amount of intake air from the air to increase.

Furthermore, when the floor surface is a carpet such as a carpet, which has a particularly long bristle feet, the bristle feet enter the suction chamber 29 from the suction port 28, so that the amount of intake air from the suction ports 60, 60 is further reduced. Increase.

The air sucked from the air inlets 60, 60 flows into the suction chamber 29 through the air intake passage 61 while being rectified by the rectifying plate 62, and comes into contact with the blade 55 of the rotary cleaning body 51. Then, the rotary cleaning body 51 is rotated to reach the connecting pipe portion 35. Further, dust on the floor surface is sucked from the suction port 28 through the lower surface of the case body 24.

The air sucked in along with the dust through the communication grooves 64, 64 becomes a suction flow along the axial direction of the rotary cleaning body 51. Therefore, the suction flow from the communication groove 64 on the right side in the traveling direction, which is one side,
The blade 51 is blown against the curved surface of the blade 55, and a force acts in the rotation direction of the rotary cleaning body 51. The suction flow from the communication groove 64 on the left side in the traveling direction, which is the other side, is blown onto the curved surface of the rotating cleaning body 51 opposite to the curved side of the blade 55, and is guided along the curved surface of the blade 55. The rotating cleaning body 51 is in a state in which the rotating cleaning body 51 is hardly applied. Therefore, the suction flow from the communication groove 64 also contributes to the rotation of the rotary cleaning body 51.

When the rotary cleaning body 51 rotates, if the floor surface is a carpet or the like, the hitting portion 57 of the blade 55 collides with the floor surface to strike out the dust and to scrape or sweep it out to suck in the dust. Inhale through mouth 28.

Here, a part of the air containing dust sucked into the suction chamber 29 reaches the connecting pipe portion 35 via the space D between the rotary cleaning body 51 and the lower case 21, but the rotary cleaning body 51 Are rotating and the spacing C is wide, so most of them are
Through the front side, the air flows into the connecting pipe 35 together with the intake air so as to be pushed out along the rotation direction of 51. The sucked dust flows through the extension pipe 13 and the hose 8 into the dust collection chamber of the cleaner body 1 and is captured.

When the suction port body 14 moves forward during cleaning, the cleaning body 66 in contact with the floor is rotated rearward as shown in FIG. It comes into contact with the floor surface, and the dust on the floor surface is wiped off at the contact portion.
Further, when the suction port main body 14 is retracted, the cleaning body 66 in contact with the floor surface is rotated forward as shown in FIG. 11, and the rear edge portion of the raised cloth 77 of the cleaning body 66 comes into contact with the floor surface. Wipe off any dust on the floor where it comes into contact. In addition, the raising of the raising cloth 77
Since 76 is substantially perpendicular to the arc-shaped lower surface of the attached pedestal portion 71, it is in a straight-line state inclined with respect to the floor surface in the rotated state. In other words, the front end of the brushed portion 76 extends forward when the rearward rotation is performed at the time of forward movement, and the front end portion of the brushed 76 extends forward when the front rotation is performed at the time of retreating. For this reason, by rubbing and sweeping the dust on the floor, the frictional resistance with the floor is reduced regardless of the running direction of the suction port main body 14, and the dust is wiped off with a light running feeling.

Further, the suction port main body 14 is moved from forward to backward.
When the traveling direction is switched, since the cleaning body 66 is in the forward turning state in the state of being rotated backward, the brushed 76 is in the reverse state in the retreating state, and the floor surface and the cleaning body 66 Frictional resistance increases. For this reason, the cleaning body 66 rotates forward as it travels rearward and returns to the normal state again. Similarly, when the traveling direction is switched from the time of retreat to the time of forward movement, the cleaning body 66 is similarly rotated backward to be in the normal state.

When the traveling direction is switched from the backward movement to the forward movement, the suction port main body 14 is located in a state approaching the worker, and the end of the communication pipe 47 is turned to the upright standing state. By pushing for forward movement in the state, the suction port body
14 is pressed against the floor. For this reason, in the case where the suction port main body 14 is lifted by the pulling and the state where the suction port body 14 is lifted and the state where the suction port body 14 is moved backward is changed, the direction of the case where the suction port body 14 is switched from the time of retreat to the time of forward movement becomes stronger when the floor surface and the cleaning body 66 are crimped. As a result, the frictional resistance increases. By the way, the cleaning body
For 66, since the turning angle is larger when turning backward when moving forward,
When the cleaning body 66 is rotated until the rotation is restricted, it is switched from the backward movement to the forward movement and the forward movement distance is increased.

Therefore, as the cleaning body 66 rotates in the same manner as the driving assistance by the rotation of the driven front wheel 36 and the driven rear wheel 38, the suction port main body 14 is kept in contact with the floor surface until the cleaning body 66 is controlled to rotate. The cleaning body 66 that rotates without any frictional members assists the running of the suction port body 14, and provides a light running feeling even when switching from retreating to moving forward when pressed against the floor surface, improving running performance. Cleaning work becomes easier.

On the other hand, when the lower surface of the suction port main body 14 is separated from the floor surface to move furniture or the like, or to move a cleaning place, the opening area becomes large, and an air passage to the suction chamber 29 is formed. The airflow resistance from the suction port 28 that is not
Since it becomes smaller than the wind path resistance taken from 60, the suction port
As the volume of air suctioned from 28 increases,
The air volume taken from 60,60 decreases. For this reason, the intake air blown to the rotary cleaning body 51 is weakened, and the rotary cleaning body 51 is rotated.
The rotation speed of 51 is greatly reduced.

After the cleaning is completed, the rotary cleaning member 51 is used to remove lint or hair entangled with the rotary cleaning member 51.
When removing 51, the slider 42 is slid and moved to remove the case cover 31, and is attached and detached from the upper surface of the case body 24 that is opened. In addition, when mounting, it mounts by operation opposite to removal operation.

When dust adheres to the cleaning body 66 and becomes dirty, the intermediate portion of the pedestal 71 is elastically deformed so that the claw 69,
After passing through the space 69, the shafts 72, 72 are removed from the bearings 67, 67, respectively, thereby removing the shafts 72, 72 from the housing recess 65 and washing them. In addition, when mounting, it mounts by operation opposite to removal operation.

As described above, the rectifying plate 62 is provided at the intake port 60 for supplying the intake air flow to the rotary cleaning body 51 and rotating the same, and supplies the intake air flow toward the outermost periphery of the rotary cleaning body 51 and blows the blade against the blade 55. Since the intake air passage 61 is formed as described above, the intake air stream is efficiently blown to the blade 55 of the rotary cleaning body 51, so that the torque of the rotary cleaning body 51 can be improved, and the cleaning performance can be improved.

Furthermore, since the intake air passage 61 formed by the rectifying plate 62 is formed in a trumpet shape in which the opening area, which is the cross-sectional area of the air passage, is small on the downstream side, the intake air flow can be performed without generating noise due to turbulence. As the wind speed of the suction flow increases, the force of blowing to the rotating cleaning body 51 can be increased, and the torque of the rotating cleaning body 51 can be increased to improve the cleaning performance.

Since the current plate 62 is provided inward from the air inlet 60, it does not protrude outside the case body 24, so that the external appearance can be improved. In addition, the current plate 62 may interfere with furniture or the like during cleaning. As a result, the cleaning work is not hindered, and the generation of noise due to turbulence generated at the protruding portion can be prevented.

Further, the cleaning body 66 having a raised cloth 77 attached to the lower surface of the pedestal portion 71 is rotatably pivoted at a predetermined angle such that the axial direction is along a direction intersecting the traveling direction of the suction port body 14. Since the cleaning body 66 rotates in the same manner as the driven front wheel 36 and the driven rear wheel 38 at the time of reversing, which is the switching of the running direction of the suction port main body 14 back and forth, the running is assisted and the running performance can be improved. , Cleaning work becomes easy.

Further, since the cleaning body 66 rotates and wipes off dust at a portion on the running direction side of the raising cloth 77, the raising cloth 77 can be prevented from being locally damaged, and the life of the cleaning body 66 can be improved. .

Further, since the cleaning body 66 is regulated to rotate at a predetermined angle, the structure of the suction port main body 14 is simpler than that of a conventional roller-shaped cleaning body and does not require a structure for regulating the rotation. Dust can be reliably wiped off from the floor during traveling to improve the cleaning efficiency, and the cleaning body 66 has a semicircular cross-section and can be reduced in size, and the accommodation recess 65 as an installation space can also be reduced in size.

Then, the cleaning body 66 is deviated to the lower surface of the pedestal portion 71 formed in an arc shape having a curvature larger than the curvature about the rotation axis, that is, the position where the rotation axis approaches the lower surface. The raised cloth 77 is provided on the lower surface of the pedestal portion 71 formed so that the raised brush 76 extends substantially perpendicularly to the lower surface, so that the suction port main body 14 travels on the floor surface and the pedestal portion 71 rotates. At this time, the raised brushes 76 are inclined with respect to the floor surface in a sequential state in which the tips extend in the opposite direction to the running direction, so that the raised brushes 76 are stroked on the floor surface and the floor while the suction port body 14 is running. The frictional resistance between the surface and the cleaning body 66 is reduced, and the traveling performance can be improved. Further, since there is no directionality of the cleaning body 66, a structure for preventing erroneous attachment to the case body 24 is unnecessary, and the structure can be simplified.

Further, the cleaning body 66 is inserted into the housing recess of the case body 24.
Since the raised cloth 77 is rotatably housed in the 65 so that only the raised cloth 77 protrudes from the lower surface of the case body 24, damage to the floor surface and the cleaning body 66 due to contact between the floor surface and the pedestal portion 71 can be prevented.

A pedestal portion 71 formed in an axially long shape.
The upper surface of the cleaning body 66 is provided with a projection 73 whose tip is in contact with the ceiling surface of the housing recess 65 which is the lower surface of the case body 24 at substantially the same curvature as the center of the rotation axis of the pedestal 71. Even when a force that is pushed up from the floor surface due to contact with the floor surface is applied, the cleaning body 66 rotates at the position supported by the case body 24 and the projection 73 that contacts the lower surface of the case body 24 with a small area. Since the deformation of the cleaning body 66 can be prevented without impairing the movement, the dust can be wiped off in the entire area of the cleaning body 66 in the axial direction, and the cleaning body 66 can be cleaned.
The damage such as breakage of 66 can be prevented.

Claw portions 69, 69 are provided on the lower surface of the case body 24 and project downward from the cleaning body 66 toward the cleaning body 66 to restrict the rotation of the cleaning body 66 within a predetermined angle range. With the provision, the rotation can be restricted and the cleaning body 66 provided on the lower surface of the case body 24 can be prevented from falling off with a simple structure.

Further, since the claws 69, 69 are provided in a staggered manner and the pedestal 71 is formed of a material which can be elastically deformed, the cleaning body 66 is formed.
Can be easily attached and detached.

Further, since the end mounting concave portion 74 and the edge mounting concave portion 75 for burying the peripheral edge of the brushed cloth 77 are provided in the pedestal portion 71, contact and friction between the raised cloth 77 and the floor surface cause the peripheral edge of the brushed cloth 77 to be removed. It is possible to prevent the cleaning body 66 from being peeled and damaged.

Then, the elongated cleaning body 66 is inserted into the suction port main body 14.
Because it is arranged in almost the entire area along the left and right direction of the
The airtightness of the lower surface of the device is improved, the negative pressure is increased, and the dust suction port ratio can be improved.

Further, since the cleaning body 66 is detachable, even if the cleaning body 66 is contaminated by dust, only the cleaning body 66 needs to be cleaned.
Maintainability can be improved.

On the other hand, since the air inlets 60, 60 are not provided at positions facing the communication pipe 47 but are formed substantially symmetrically in the left-right direction, the air can be blown to the rotary cleaning body 51 almost uniformly and efficiently. The torque of the rotary cleaning body 51 is improved, so that the cleaning performance can be improved, and the appearance is substantially symmetrical, so that the appearance can be improved.

Further, since the air inlets 60, 60 are formed in the front side of the rotation radius of the rotary cleaning body 51 on the front side of the substantially vertical direction passing through the rotation axis of the rotary cleaning body 51, the rotary cleaning body 51 is efficiently provided. The suction flow can be blown, and the cleaning performance can be improved.

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

In the above description, the rotary cleaning member 51 which is rotated by being directly blown by the intake air flow is provided. However, a rotary cleaning member which is separately rotated by driving means such as an electric motor or an air turbine is provided. The same effect can be obtained even when a cleaning body is provided or a rotary cleaning body is not provided. Furthermore, as a rotary cleaning body, in addition to the blade 55,
Any of a rotary brush as a cleaning member provided with a raised brush 76 in a wall shape, a cleaning blade provided with a cloth blade portion, a combination of a brush, a cloth blade, and a blade 55 may be used.

Although one cleaning element 66 is provided behind the suction port 28, the cleaning element 66 may be provided in front of the suction port 28 or a plurality of cleaning elements 66 may be provided.

Further, as the cleaning body 66, in addition to the brushed cloth 77, the same effect can be obtained even if a brush bristle is directly implanted in the pedestal portion 71 and has a dust scraping action such as dust scraping or sweeping. Having.

Also, although the raised cloth 77 has been described so that the raised 76 is substantially perpendicular to the lower surface of the pedestal portion 71, for example, the raised cloth 77 is provided so as to be inclined such that the tip extends rearward in the forward direction. Is also good. That is, when the suction port body 14 is pushed forward against the floor, the raised brushes 76 become more sluggish when moving forward, and the running performance is further improved, and at the time of retreating, the dust scraping action is obtained. In the case where the brush bristles or raised portions 76 are provided at an angle, it is preferable to provide a configuration for preventing the erroneous attachment to the case body 24 by, for example, changing the diameter of the shaft portions at both ends.

The cleaning body 66 may be directly rotatably provided on the lower surface of the case body 24 without being provided in the housing recess 65.

On the other hand, the intake port 60 has been described as being symmetrical. However, for example, in the case of using a rotary cleaning body in which the blade 55 is provided in a straight line shape that is not spiral, the intake port that opens left and right
The positions of 60, 60 may be displaced in the vertical direction.

In the above description, two intake ports 60 are opened at the front side in the traveling direction. However, the intake port 60 may be provided at any position, and not limited to two, and a plurality of intake ports may be provided.

Further, the rectifying plate 62 provided in the intake port 60 is provided inside the case cover 31 of the case body 24 so that the opening area on the downstream side of the intake air passage becomes gradually smaller. May be formed so as to protrude outside in a cylindrical shape to form an intake air passage.

[0078]

According to the suction port body of the vacuum cleaner according to the first aspect, at the opening edge of the suction port that supplies the suction flow to the rotary cleaning body rotatably to the case body, at the outermost periphery of the rotary cleaning body. A rectifying plate that forms an intake air path that supplies the intake air flow toward the cleaning member of the rotary cleaning body and applies the intake air flow to the cleaning member of the rotary cleaning body can efficiently supply the intake air flow to the cleaning member of the rotary cleaning body, and the torque of the rotary cleaning body In addition to this, it is possible to reduce the area that cannot be scraped out by the rotary cleaning body, and to improve the cleaning efficiency.

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 suction flow is supplied toward the outermost periphery of the rotary cleaning body. The rectifying plate that forms the intake air passage protrudes inward inside the case body, so that the rectifying plate does not interfere with cleaning work such as colliding with furniture etc. during cleaning, and it can improve the appearance, For example, noise can be prevented from being generated due to turbulence generated when the current plate is provided outside the case body.

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 cross-sectional area of the air path of the suction air path increases in accordance with the downstream side. Since the current plate is provided so as to be small, the intake air flow can be efficiently supplied to the rotary cleaning body with a simple configuration, and the torque of the rotary cleaning body can be improved.

According to the vacuum cleaner of the fourth aspect, the suction flow is efficiently supplied to the rotary cleaning body, the torque is increased, the weight is reduced, and the cleaning efficiency is improved. Since the suction port of the vacuum cleaner is provided, the cleaning workability can be improved.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a suction port main body of an embodiment of a suction port body of a vacuum cleaner according to the present invention.

FIG. 2 is a plan view showing a state in which the upper case is removed.

FIG. 3 is a bottom view of the same.

FIG. 4 is a front view of the same.

FIG. 5 is a rear view of the same.

FIG. 6 is a side sectional view showing the vicinity of a cleaning body of the suction port main body;

FIG. 7 is a partially cutaway perspective view showing the same cleaning body.

FIG. 8 is a sectional view of the upper end surface.

FIG. 9 is a sectional side view of the same.

FIG. 10 is a side cross-sectional view showing the vicinity of the cleaning body of the suction port main body in a state where the cleaning body is rotated backward.

FIG. 11 is a side sectional view showing the vicinity of the cleaning body of the suction port main body in a state where the cleaning body is rotated forward.

FIG. 12 is a perspective view showing the main body of the cleaner.

[Explanation of symbols]

 1 Vacuum cleaner body 14 Suction port body 24 Case body 28 Suction port 51 Rotary cleaning body 55 Blade as cleaning member 60 Inlet port 61 Intake air path 62 Rectifier plate

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Junji Naito 43 Horiyamashita, Hadano-shi, Kanagawa Tec Co., Ltd. Hadano Plant (72) Inventor Takeyuki Ichino 43 Horiyamashita, Hadano City, Kanagawa Prefecture Tec Hatano Plant

Claims (4)

[Claims] 1. A case body having an inlet and an air inlet on a lower surface facing a surface to be cleaned, and a cleaning member rotatably provided in the case body to scrape dust on the surface to be cleaned. A rotating cleaning body that rotates by applying an airflow from the air inlet to the cleaning member; and an air flow provided at an opening edge of the air inlet and supplying the air flow toward the outermost periphery of the rotary cleaning body. A suction port body for a vacuum cleaner, comprising: a flow straightening plate forming a passage. 2. The suction port body for an electric vacuum cleaner according to claim 1, wherein the straightening plate is protruded inwardly inside the case body. 3. The suction port body for a vacuum cleaner according to claim 1, wherein the intake air path has a smaller cross-sectional area of the air path toward the downstream side. 4. A vacuum cleaner comprising: a suction port of the vacuum cleaner according to claim 1; and a cleaner main body to which the suction port is connected.