JPH1156700A - Suction opening body of electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction opening body of an electric vacuum cleaner by which the generation of noise can be prevented and the traveling performance can be improved in a simple structure. SOLUTION: A communicating pipe communicating with a suction opening opened to the lower surface is rotatably journalled to the substantially central part of the rear of the ase body. Driven rear wheels 96 are rotatably journalled to be positioned on both sides of the communicating pipe of the case body, and driven front wheels are rotatably journalled to both end sides of the front. An annular elastic member 99 is installed in such a manner as to a little project over the outer peripheral surface in a groove 98 for preventing forming deformation such as a shrink or the like, which is provided along the circumferential direction on the outer peripheral surface of the wheel part 98. A protective sheet 100 of a raised cloth piece is fitted to the outer peripheral surface of the wheel part 98 to cover the annular elastic member 99. The shock which the driven rear wheels 96 receive from the floor surface at the time of traveling on the floor surface during cleaning is absorbed by the annular elastic member 99 to prevent damage to the floor surface and the generation of noise. By the protective sheet 100 of the raised cloth piece having a comparatively small frictional resistance to the floor surface, the driven rear wheels 96 are forced to easily skid so that the traveling direction of the suction operating main body 11 can be changed without resistance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having a rotatable traveling wheel.

[0002]

2. Description of the Related Art Conventionally, as a suction port body of a vacuum cleaner,
A configuration is known in which a case body having a suction port opened on the lower surface is provided with a communication pipe connected to a hose or an extension pipe in communication with the suction port and a traveling wheel for traveling on the floor is rotatably provided. .

[0003] Then, the end of the connected hose is gripped and pushed and pulled to run on the floor, and the dust is sucked and cleaned through the suction port.

[0004]

However, particularly when the floor surface is between boards, the traveling wheel runs over fine unevenness of the floor surface when running on the floor surface, and noise is generated, and the cleaning worker May cause discomfort and may damage the floor surface.

In order to reduce noise and prevent damage to the floor, it is conceivable to provide an elastic member such as rubber on the outer peripheral surface of the traveling wheel.

However, when the elastic member is provided on the outer peripheral surface of the traveling wheel, for example, when the traveling direction is changed, the friction is large. For example, the case body is once lifted off the floor to change the direction of the case body. Since it is necessary to run on the floor later, the cleaning work becomes complicated. In addition, it is conceivable to provide the traveling wheels so as to be able to turn. However, a configuration for supporting the traveling wheels so as to be able to turn is required, and there is a problem that the size is increased and the handling is reduced.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a suction port of a vacuum cleaner that has a simple structure, prevents generation of noise, and improves running performance.

[0008]

According to a first aspect of the present invention, there is provided a vacuum cleaner having a suction opening body having a suction opening formed on a lower surface facing a surface to be cleaned, and a rotatably mounted to the case body. A traveling wheel that is in contact with the surface to be cleaned, an annular elastic member attached to the outer peripheral surface of the traveling wheel, and a raised cloth provided on the outer peripheral surface of the annular elastic member protruding from at least the outer peripheral surface of the traveling wheel. It is provided.

An annular elastic member is attached to an outer peripheral surface of a traveling wheel rotatably mounted on a case body having an inlet opening on a lower surface facing the surface to be cleaned and grounded to the surface to be cleaned.
Since a raised cloth is provided on at least the outer peripheral surface of the annular elastic member protruding from the outer peripheral surface of the traveling wheel, the impact from the surface to be cleaned is absorbed by the annular elastic member, noise is reduced, and damage to the surface to be cleaned is prevented. Since the outermost brushed cloth in contact with the surface to be cleaned has a small frictional resistance with the surface to be cleaned, the traveling wheel can easily slide in a direction intersecting the rotating direction of the traveling wheel,
Drivability is improved.

[0010] The suction opening of the vacuum cleaner according to claim 2 is
The suction wheel of a vacuum cleaner according to claim 1, wherein the traveling wheel includes a groove-shaped portion provided on the outer peripheral surface thereof in a concave groove along the circumferential direction and engaged with the annular elastic member.

The annular elastic member is engaged with a groove formed on the outer peripheral surface of the running wheel along the circumferential direction.
For example, deformation such as sink marks during molding is prevented by the groove-shaped portion, and the annular elastic member is engaged with the groove-shaped portion for preventing molding deformation, whereby the annular elastic member is securely positioned and fixed.

[0012]

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

In FIG. 3 to FIG. 9, reference numeral 11 denotes a suction port main body which is horizontally long in the traveling direction. The suction port main body 11 has an upper surface made of a synthetic resin such as acrylonitrile-butadiene-styrene (ABS) resin. A lower body case 12,
An upper body case 13 having an open lower surface made of the same material and fixed to the upper portion of the lower body case 12 so as to cover the opening on the upper surface, along the peripheral surface including the front surfaces of the lower body case 12 and the upper body case 13. A rectangular case body 15 is formed by sandwiching and joining the bumpers 14.

The lower main body case 12 has a rib 17 formed substantially vertically on the upper surface, and a suction chamber as a rotary cleaning body chamber that is horizontally elongated in the left-right direction on the front side that is the advancing direction side and opens on the lower surface. A first cleaning body chamber 18 having a concave groove shape is formed, and a suction groove serving as a rotary cleaning body chamber that is also horizontally elongated in the left-right direction and opens on the lower surface is similarly formed on the rear side that is the retreating direction side. A second cleaning body chamber 19 is defined. The case body 15 further includes a suction chamber 21 that opens downward at a substantially central portion of a rear portion of the second cleaning body chamber 19 by the rib portion 17 and that opens a suction port 20 that also functions as a leak port. 1 cleaning body room
A first drive transmission chamber 22 partitioned from the approximate center between the second cleaning body chamber 18 and the other end side, and located on both sides of the suction chamber 21 substantially above the second cleaning body chamber 19; Partitioned upper body case
Intake chambers 24a, 24 opening a plurality of intake ports 23 formed in
b, and a second partition defined on the other end side from the first drive transmission chamber 22.
And a shaft support chamber 26 defined at the end opposite to the second drive transmission chamber 25.

The suction port 20 expands in a trumpet shape toward the second cleaning body chamber 19, and the opening at the lower surface of the second cleaning body chamber 19 has a substantially central rear portion that is recessed rearward and is convex. An opening is formed in the shape of a letter. Further, the lower surface of the second drive transmission chamber 25 is opened downward, and a closing plate 28 as a cover body is detachably attached to this opening by a mounting tool 29.

The lower surface of the lower body case 12 has a first
A first communication concave portion 31 in the form of a groove, which is located at both ends of the cleaning body chamber 18 and communicates the outside of the case body 15 and the first cleaning body chamber 18.
Is provided. Further, on the lower surface of the lower body case 12, a second groove-shaped second groove is provided at the rear end of one end side of the second cleaning body chamber 19 and communicates the outside of the case body 15 and the second cleaning body chamber 19. Communication recess 32 is provided.

Further, on the lower surface of the lower main body case 12, there is provided a brush mounting portion 34 in the shape of a horizontally elongated groove located substantially in the left-right direction between the first cleaning body chamber 18 and the second cleaning body chamber 19. A brush body 35 as a cleaning body is detachably attached to the brush mounting section. The brush mounting portion 34 has a boss portion 36 projecting downward in a substantially cylindrical shape, and a hook-like shape whose tip projects substantially in an L shape toward the shaft support chamber 26 side of the brush mounting portion 34. A hooking claw 37 is provided to protrude.
A mounting recess 38 is provided at the end of the brush mounting portion 34 opposite to the side from which the hooking claw 37 protrudes. Note that the tips of the boss portion 36 and the hooking claw portion 37 are located inside the brush attachment portion 34 and do not protrude from the lower surface of the case body 15.

On the other hand, the brush body 35 has an elongated plate-shaped pedestal portion 40 that can be mounted in the brush mounting portion 34, and a diagonally extending one side of the pedestal portion 40 in the longitudinal direction of the pedestal portion 40. And a raised cloth 41 having brush hairs (not shown) that are planted. The boss portion 36 of the brush mounting portion 34 is provided on the pedestal portion 40.
Is provided with a mounting hole 42 in which a hook is detachably inserted, and a hook wall portion in which a tip of a hook claw 37 is hookable and disengageable.
A hook hole 44 having 43 is provided. As shown in FIG. 12, the mounting hole 42 is formed in a longitudinal direction so that the boss portion 36 can be inserted even if a positional displacement occurs in the axial direction. The pedestal portion 40 has a first mounting claw portion 46 protrudingly provided at one end in the longitudinal direction, the first mounting claw portion 46 being detachable from the mounting concave portion 38, and having a shape different from that of the first mounting claw portion 46 at the other end in the longitudinal direction. Mounting recess 38
A second mounting claw portion 47 that cannot be disengaged is protruded. As shown in FIGS. 10 and 11, the side surface of the second mounting claw portion 47 is locked by one edge of the closing plate 28, and
28 and the case body 15, and the end face abuts on the side surface of the closing plate 28, so that movement in the longitudinal direction is restricted.

When the brush body 35 is mounted on the brush mounting portion 34, the brush bristles of the raising cloth 41 are mounted so as to be inclined backward in the running direction of the case body 15.

The case body 15 includes a first cleaning body chamber 18.
And a substantially cylindrical communication passage 49 for communicating the second cleaning body chamber 19.
Is provided. The hooking claw 37 of the brush mounting portion 34 is provided at a position corresponding to the communication path 49. Then, the second opening in which the suction port 20 is opened by the communication passage 49.
Similarly to the opening on the lower surface of the cleaning body chamber 19, the first cleaning body chamber 18
The opening on the lower surface of the is connected to the suction port 20 to form a suction port for sucking dust.

Further, on both ends of the upper body case 13,
A slit-shaped leak window portion 51 is formed to open to communicate with the second drive transmission chamber 25 and the shaft support chamber 26. As shown in FIG. 13, the upper body case 13 is provided with a pair of wall-like holding walls 52, 52 located on both sides of the leak window 51, and between the holding walls 52, 52. A holding pin portion 53 is provided as a holding portion that protrudes downward in a substantially cylindrical pin shape facing the leak window portion 51 so as to be positioned. Then, at the inner surface of the upper main body case 13, the holding wall portion 52 and the holding pin portion 53, a flexible sheet-like filter member 54 such as a sponge is folded downward in a substantially U-shape, and In order to prevent dust from accumulating in the second drive transmission chamber 25 and the shaft support chamber 26, it is detachably mounted so as to cover the leak window 51.

Further, the lower body case 12
Lower body case 12 and upper body case 13
A mounting portion 55a is provided to be clamped at the time of joining with the above. The mounting portion 55a is provided with a tongue piece 55b projecting inward from the case body 15, and one surface of the tip side of the tongue piece 55b protrudes downward in a tongue shape to form a lower body. A plurality of hooking tongue pieces 55c that engage with the edge of the case 12 are appropriately protruded. Further, the plurality of tongue pieces 55 provided
b is provided at a position corresponding to a part of the leak window 51, and the upper surface thereof is in contact with and held by the lower end surface of the filter member 54 to prevent the filter member 54 from falling off.

In the center of the rear part of the case body 15, a communication pipe is provided.
One end 56 is located in the suction chamber 21 and faces the suction port 20, and the other end is rotatable at a predetermined angle in the vertical direction by rotating shafts 57, 57 with the lower body case 12 and the upper body case 13. It is supported and mounted. The suction chamber 21 communicates with the communication pipe 56 to form the suction air passage 58. The rear end of the communication pipe 56 projects rearward and outward from the suction port main body 11, and the front end of the bent connection pipe 59 is rotatably fitted to the rear end. The edge of the communication pipe 56 facing the suction port 20 is not covered by the edge of the suction port 20 when the end of the communication pipe 56 that extends to the rear of the communication pipe 56 rotates to the lowest position. The communication pipe 56 is opened substantially on the same plane inside the inside. The connection pipe 59 is detachably connected to a hose via an extension pipe (not shown), and further connected to a vacuum cleaner body (not shown).

On the other hand, a middle case 63 for partitioning a turbine chamber 62 for rotatably accommodating an air turbine 61 serving as a flat driving means therein is mounted and fixed substantially at the center of the case body 15. The middle case 63 is
A first bearing chamber 67 that opens downward is used to fix a first bearing 66 that rotatably supports the lower end of a shaft body 65 that is a substantially cylindrical rotary shaft. A first partitioning section 68 that partitions the first drive transmission chamber 22 with the rib section 17 is provided. Also, the middle case 63,
A second bearing 69 that rotatably supports the upper end of the shaft 65.
And a second bearing chamber 70 that opens upward, and that is positioned and held on the lower surface of the upper body case 13 to hold the first partitioning section 68.
And a second partitioning section 71 which partitions the turbine chamber 62 in the opposite direction. Further, the first bearing chamber 67 and the second bearing chamber 70 are located outside the turbine chamber 62. The first bearing 66 housed in the second bearing chamber 70
Is clamped and fixed by a substantially cylindrical rib 72 provided on the lower surface of the upper body case 13 and the second partition 71.

Further, in the first partitioning section 68, there is provided an intake restricting member for restricting the flow of an intake airflow 73 flowing in the turbine chamber 62 in a substantially trumpet shape facing the outer peripheral portion of the lower surface of the air turbine 61 upward. A part 74 is provided. And this intake regulation part
At 74, the intake airflow 73 is located adjacent to the suction port 21, not facing the suction port 20, facing the communication pipe 56, communicating with the suction chamber 21, and discharging the intake airflow 73 flowing through the turbine chamber 62 from the inside of the intake regulating section 74. An intake / exhaust port 76 is formed to flow through the communication pipe 56 together with the suction airflow 75 flowing through the suction chamber 21. The opening area of the intake / exhaust port 76 is formed to be smaller than the opening area of the intake port 20.

The intake regulating section 74 includes an upper body case.
An intake portion 80 is provided on the lower surface of the thirteen and the second partitioning portion 71 for partitioning a pair of intake air supply channels 79a and 79b which form a part of the intake air channel 78 and spread in a trumpet shape in the circumferential direction. ing. Further, these intake air supply passages 79a and 79b include:
The inclined surface 81 inclined toward the outer peripheral edge of the lower end of the air turbine 61
The intake air supply passages 79a and 79b communicate with the turbine chamber 62 in a scroll shape so that the width of the intake air passages 79a and 79b becomes gradually narrower and the cross-sectional area becomes gradually smaller. The air is supplied to the radial position substantially symmetrical with respect to 65, and the intake airflow 73 is efficiently supplied to the air turbine 61 on the inclined surface 81. One end of the intake supply air passages 79a, 79b opening in a trumpet shape is located on both sides of the communication pipe 56 at the rear of the upper main body case 13, and communicates with the intake ports 23 opened respectively via the intake chambers 24a, 24b. Have been.

In order to supply the intake airflow 73 in the rotation direction of the air turbine 61, one intake supply air passage 79a is opened toward the rear of the case body 15, and the other intake supply air passage 79b is opened.
Opens toward the front of the case body 15. For this reason, an intake airflow 73 sucked toward the front of the case body 15 from the intake port 23 opening at the rear of the upper body case 13 is provided in the intake body 24b on the other intake supply air passage 79b side. A curved rectifying plate 83 as rectifying means for smoothly changing the direction is provided in the intake air supply passage 79b opening forward.
The rectifying plate 83 includes an upper rectifying plate 83a and a lower rectifying plate 83a (not shown) integrally provided in a rib shape on the upper main body case 13 and the lower main body case 12, respectively.
13 and the lower main body case 12 are joined to form a curved plate with the tip portions abutting. It should be noted that the left and right opening areas of the intake port 23 opening on both sides of the communication pipe 56 at the rear part of the upper main body case 13 are formed so as to have substantially the same area.

The upper main body case 13 has an opening 85 formed at a position corresponding to the intake air supply passage 79a and closed by a translucent member 84.

Further, the inlet portion 80 is provided with a substantially cylindrical weight 87 as an obstructing body, which is substantially cylindrical in the vertical direction, and is provided in the intake air supply passage.
A pair of weight accommodating portions 88a and 88b which are movably accommodated in 79a and 79b so as to be able to advance and retreat, respectively, are provided in the radial direction of the turbine chamber 62. In addition, a first bypass air passage 89a communicating with the inside of the intake regulating portion 74 downstream of the turbine chamber 62 is formed below one of the weight accommodating portions 88a. In addition, a second bypass air passage 89b communicating with the communication passage 49 is formed below the other weight accommodating portion 88b. And
First bypass air passage 89a and second bypass air passage 89b
Is closed in the normal state in which the lower surface of the suction port main body 11 faces downward, that is, when the weight body 87 is accommodated in the weight accommodating portions 88a and 88b and does not enter the intake air supply passages 79a and 79b. It is supposed to be.

The outer peripheral surface of the weight 87 has a reduced impact noise when the weight 87 is moved, and the first bypass air passage 89a and the second bypass air passage 89a.
An elastic member such as rubber is preferably formed so as to cover the bypass air passage 89b in an airtight manner.

Then, from the intake port 23, the intake chambers 24a, 24b,
Intake air supply passages 79a, 79b, turbine chamber 62, intake control section 74
Inside, a suction chamber forming a suction air passage 58 via an intake / exhaust port 76
An intake air passage 78 communicating with the communication passage 21 and reaching the communication pipe 56 is formed. That is, the suction port 20 is opened downstream of the air turbine 61 in the intake air passage 78 without facing the air turbine 61.

On the other hand, the air turbine 61 has a substantially cylindrical shape in which a shaft 65 is fitted and fixed substantially at the center of the lower surface on the curved surface side of the substantially disk-shaped umbrella portion 91 slightly curved in a funnel shape toward the center. And a plurality of curved portions are formed so as to protrude substantially radially from the lower surface on the curved surface side of the umbrella portion 91 so that the lower end edge thereof faces the intake regulating portion 74 via a slight gap. Windshield
93, 93 are formed in the shape of a horizontal turbine by projecting into a wall shape. As shown in FIG. 14, the position of the umbrella portion 91 connected to the shaft 65 is located on an extension of both edges in the width direction along the axial direction of the wind receiving plates 93, 93, that is, the position of the umbrella portion 91. The position of the base end, which is the portion connected to the shaft support 92 into which the shaft 65 is integrally inserted, is located between the width dimensions of the wind receiving plates 93, 93. Further, on the upper surface of the umbrella portion 91, a mark (not shown) which is located on the outer peripheral side and which can be confirmed from the window portion 85 of the upper main body case 13 is provided.

The wind receiving plate 9 on the center side of the air turbine 61
Below the position where 3 and 93 are not provided, it is opened in a substantially bag-like shape by a trumpet-shaped intake restricting portion 74 of the first partitioning portion 68 opposed to the first partitioning portion 68 via a gap. The edges of the inclined surfaces 81 of the intake air supply passages 79a, 79b are located toward the outer peripheral edge of the lower end of the wind receiving plates 93, 93, and the intake air flow 73 toward the head 91 of the air turbine 61.
The flow of the intake air flow 73 is regulated by the intake regulating section 74 and abuts the substantially entire surfaces of the wind receiving plates 93, 93, so that the air turbine 61 rotates efficiently with high torque. ing. At the other end of the shaft 65, an air turbine pulley 94 is provided integrally.

In the air turbine 61, the air turbine pulley 94 is projected from the lower end of the middle case 63 so as to face the first drive transmission chamber 22.
The shaft 66 and the second bearing 69 are axially supported substantially vertically, and are rotatably supported in the turbine chamber 62.
By supporting both ends of the shaft 65 on the first bearing 66 and the second bearing 69, the first partition 68
The second partition 71 is integrally assembled, and the middle case 63 accommodating the air turbine 61 is assembled.

A driven rear wheel chamber 96a is provided on both sides of the communication pipe 56 of the lower main body case 12 and rotatably supported by a driven rear wheel 96 as a running wheel. The driven front wheel chamber 97a is rotatably supported.

Further, as shown in FIG. 1, the driven rear wheel 96 has a groove 98a as a groove-shaped portion for preventing molding deformation such as sink of the wheel portion 98 along the circumferential direction on the outer peripheral surface of the wheel portion 98. An annular elastic member 99 such as an O-ring is provided in the groove 98a.
Is provided. The outer peripheral surface of the annular elastic member 99 is
It is in a state of projecting slightly outward from the outer peripheral surface of the wheel portion 98.

On the other hand, the first cleaning body chamber 18 and the second cleaning body chamber 19 have a first rotating blade 10 as a rotating cleaning body.
The first and second rotating blades 102 are each rotatably disposed. And these first rotating blades 10
As shown in FIG. 1 and FIG. 2, the first and second rotating blades 102 are shaft members provided with a plurality of, for example, four, spirally shaped groove portions 103 in a clockwise direction in the circumferential direction on the peripheral surface of, for example, an aluminum alloy. As a mandrel 104.
In addition, the groove 103 is formed in a substantially groove-shaped concave groove having a wider cross section.

The first rotary blade 101 has a blade portion 105 which protrudes in a wall shape on the outer peripheral surface and engages with the groove portion 103 of the mandrel 104 in a spiral shape. The blade portion 105 is made of a flexible soft member, for example, an elongated flat plate made of soft vinyl chloride.
A bulging portion as a mounting portion that engages with the groove 103 of No. 4 is integrally formed to be thick. Further, on the one surface side of the plate portion, an elongated plate-shaped raised cloth made of, for example, polyester and having a raised surface on one side, which is a cloth member, is integrally formed on the one surface side of the blade portion 105 to form the blade portion 105 integrally. Have been.

In the raised cloth, the plate portion of the blade portion 105 protrudes longer than the length of the protruding portion from the mandrel 104, and the raised portion is positioned on the plate portion side. Further, only the leading end of the raised cloth protruding from the plate portion is driven by the driven front wheel 97 and the driven rear wheel 96 of the suction port body 11.
Projecting downward from a plane formed by the lower edge of the floor, the surface to be cleaned comes into contact only when the surface is between the plates, so that the flooring effect of floor polishing can be obtained. Also, the plate part,
The tip does not come into contact between the plates, but comes into contact with the uneven surface of the carpet or the like, so that the effect of scraping out dust can be obtained.

The second rotating blade 102 has a blade portion 105 of the first rotating blade 101 on which a raised cloth is not provided and a bulging portion integrally formed of a soft member. Similarly to the first rotating blade 101, the mandrel is spirally protruded from the outer peripheral surface so as to protrude like a wall.
It is engaged with and attached to the groove 103 of the groove 104.

As shown in FIG. 5, the helical angle of the second rotating blade 102 is larger than that of the first rotating blade 101, that is, the twisting state is stronger.

Further, a pulley 108 is provided at one end of each of the first rotating blade 101 and the second rotating blade 102 with a mandrel 104.
Are provided integrally with each other. The first rotary blade 101 and the second rotary blade 102 have shaft portions 109, 108 in which pulleys 108, 108 are located in the second drive transmission chamber 25 and are rotatably provided at both ends in the axial direction. 109 is rotatably supported by engaging with bearings 110, 110 provided on the case body 15, respectively.

The first rotating blade 101 and the second rotating blade 101
The rotating blade 102 has a lower end protruding slightly downward from the opening on the lower surface of each of the first cleaning body chamber 18 and the second cleaning body chamber 19.

On the other hand, in the first drive transmission chamber 22, a drive conversion means 111 as a drive transmission means is provided. The drive conversion means 111 is capable of rotating a substantially rod-shaped first shaft 113 whose axial direction extends vertically in a box body 112 which is disposed at the end of the first drive transmission chamber 22. It is pivoted. At the lower end of the first shaft 113, there is provided a first pulley 115 on which a first endless belt 114a, which is an endless belt as a drive transmission means, is wound around the air turbine pulley 94 of the air turbine 61. The first drive transmission chamber 22 is provided facing the first drive transmission chamber 22, and a first bevel gear 116a is provided at the upper end.

Further, in the box 112, a second shaft 117a and a third shaft 117b, each having a substantially rod shape, are rotatably disposed substantially vertically in a horizontal direction of the case body 15 so as to be rotatable. The second shaft 117a has a second bevel gear 116 which is engaged at one end with the first bevel gear 116a of the first shaft 113.
116b, a second pulley 118 is provided at the other end facing the second drive transmission chamber 25, and a first gear 119a is provided at one end from the intermediate portion.
Is provided. Also, at one end of the third shaft 117b,
A second gear 119b that engages with the first gear 119a of the second shaft 117a is provided, and a third pulley 120 facing the second drive transmission chamber 25 is provided at the other end. A second endless belt 114b, which is a drive transmission means, is slantedly wrapped around the second pulley 118 of the second shaft 117a by the pulley 108 of the first rotary blade 101, and the third A second rotating blade is attached to the third pulley 120 of the shaft 117b.
A third endless belt 114c, which is a drive transmission means, is stretched in a substantially horizontal direction between the pulley 108 and the pulley 108.

Note that the center of the second shaft 117a is shown in FIG.
As shown in FIG. 3, the second rotating blade 10 is moved from an intermediate position between the first rotating blade 101 and the second rotating blade 102.
The second shaft 117a located on the second side, that is, the upper side
And the first rotary blade 101 that is inclined and bridged over the second shaft 117a. In addition, the third shaft 117b is a second rotating blade that extends substantially horizontally with the third shaft 117b.
102, the third shaft
The distance between 117b and the second rotating blade 102 is reduced.

The rotation of the air turbine 61 causes the first
The first shaft 113 rotates through the endless belt 114a, and the rotation causes the second shaft 117a to rotate through the first bevel gear 116a and the second bevel gear 116b. The first gear 119a and the second gear 119b meshing with each other by the rotation of the second shaft 117a form the third shaft 117b.
Rotate in the opposite direction with respect to the second shaft 117a. Then, the first rotary blade 101 rotates in the forward direction with respect to the forward direction of the suction port main body 11 via the second endless belt 114b, and the second rotary blade 102 rotates in the forward direction of the suction port main body 11. , Ie, they rotate inward from each other. Further, the first rotating blade 101 is provided with the blade portion 105 so as to rotate toward the surface on which the raised portion of the raised cloth of the blade portion 105 is provided.

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

At the time of cleaning, the suction port main body 11 is connected to a vacuum cleaner main body (not shown) via an extension pipe and a hose,
The hose is pushed forward while gripping the end of the hose on the extension pipe side, and the suction port body 11 is moved back and forth while making contact with the floor surface to be cleaned. In this state, the weights 87, 87 are located in a state of being housed in the weight housing portions 88a, 88b by their own weights, and the intake air supply passages 79a, 79b are open, that is, the intake port 23 and the turbine chamber 62. Are communicated with each other, the first bypass air passage 89a and the second bypass air passage 89b are closed.

Then, the air is suctioned from the suction port 23 and also from the suction port 20 by the suction force of the vacuum cleaner body. Here, since the suction port main body 11 is placed on the floor surface, the suction port 20 communicates with the second cleaning body chamber 19 having the opening and the second cleaning body chamber 19 through the communication passage 49. First
The negative pressure in the cleaning body chamber 18 increases, and the negative pressure on the lower surface of the suction port main body 11 increases. For this reason, the amount of intake air from the intake port 23 tends to increase.

Further, when the floor surface is a carpet such as a carpet, particularly with a long fur, the first cleaning body room 18 and the second cleaning body room
Since the hairs enter the inside of the first cleaning body 19, the negative pressure in the first cleaning body chamber 18 and the second cleaning body chamber 19 further increases,
The amount of intake air from the intake port 23 further increases.

The air sucked from the air inlet 23 has a trumpet-shaped intake air supply path 79a, 79 whose cross-sectional area gradually decreases.
b, while being rectified, reaches the turbine chamber 62 in a spiral shape, and is supplied on the inclined surface 81 so that the intake airflow 73 is blown against the umbrella portion 91 of the air turbine 61.
Accordingly, the air turbine 61 rotates at a speed proportional to the amount of intake air. This rotational driving force is transmitted to the drive converting means 111 via the first endless belt 114a, and the rotational driving with the vertical direction is converted into two rotational driving forces with the horizontal direction as the axis by the driving converting means 111. The first rotating blade 101 is converted and converted via the second endless belt 114b and the third endless belt 114c.
And the second rotating blades 102 rotate in opposite directions at a speed proportional to the amount of intake air.

Here, when the surface to be cleaned is between the plates, only the raised cloth of the blade portion 105 of the first rotating blade 101 comes into contact with and wipes the floor between the plates to wipe off the dust. When the surface to be cleaned has irregularities such as a tatami mat or a carpet, the blade portion 105 of the first rotary blade 101 and the plate portion of the blade portion 105 of the second rotary blade 102 hit and scratch the surface to be cleaned. And lift off the dust as well.

The dust that has been swept or scraped out is located in the first cleaning body chamber 18 and communicates with the communication path.
The second cleaning body room is reached via 49 to the second cleaning body room 19.
The dust located inside 19 is sucked as it is from the suction port 20 and flows to the communication pipe 56 via the suction chamber 21.

The intake airflow 73 flowing into the turbine chamber 62
The air flows from the intake regulating section 74 below the air turbine 61, through the intake outlet 76, through the suction chamber 21 forming the suction air passage 58, merges with the suction airflow 75, and flows into the communication pipe 56.

Further, when the suction port body 11 moves forward, the brush bristles of the raising cloth 41 of the brush body 35 sweep the dust so as to stroke the floor surface, and when the suction port body 11 retreats, the raising cloth 41 of the brush body 35 moves. The brush bristles rise upside down due to friction with the floor surface and scrape out dust.

When the traveling direction of the suction port main body 11 traveling on the floor is changed, the end of the hose is swung right and left, so that the driven rear wheel having a relatively small frictional resistance with the floor is provided.
The driven rear wheel 96 slides on the floor surface by the protective sheet 100, which is a brushed cloth of the 96, so that the suction main body 11 can be moved without resistance.
The running direction changes.

Here, in order to remove furniture and the like and lint and hair when the first rotating blade 101 and the second rotating blade 102 are entangled with the first rotating blade 101 and the second rotating blade 102, the lower surface of the suction port main body 11 is removed from the floor surface. By being separated, the negative pressure in the suction chamber 21 greatly increases to a state close to the atmosphere. Therefore, the suction chamber 21 communicates with the suction chamber 21 via the suction discharge port 76, and the pressure inside the suction control section 74 located on the upstream side of the suction chamber 21 increases to a state close to the atmospheric state, and the negative pressure in the turbine chamber 62 increases. The pressure also increases significantly. Then, the intake outlet 76 opening to the intake regulating part 74 has an opening area equal to or less than the opening area of the intake port 20,
Since the air turbine 61 serving as an air path resistance is disposed in the intake air path 78, the air volume of the intake air flow 73 from the intake port 23 is greatly reduced or almost no intake air flow 73 is generated. Of rotation greatly decreases or stops.

Further, when the suction port main body 11 is lifted from the floor surface and the lower surface of the suction port main body 11 faces upward, the weight body 87 is positioned below the weight receiving portions 88a, 88b by its own weight. Move toward 13 side. An intake air supply passage 79 that constitutes an intake air passage 78 opened by the movement of the weights 87, 87.
The weights 87, 87 are positioned in the air supply channels 79a, 79b, respectively, to block the intake air supply channels 79a, 79b, and the first bypass air channel.
89a and the second bypass air passage 89b are opened. Then, due to the blockage of the intake supply air passages 79a and 79b, the intake port
Even if the intake airflow 73 from the airflow 23 occurs, the supply of the intake air to the turbine chamber 62 is cut off and the first bypass air passage 89
a and the air is sucked into the suction chamber 21 through the second bypass air passage 89b, so that the intake airflow 73 does not flow to the air turbine 61,
When the rotation of the air turbine 61 stops, the first rotating blade
The rotation of 101 and the second rotating blade 102 stops.

The first rotating blade 101 and the second rotating blade 101
In order to remove the first rotating blade 101 and the second rotating blade 102 in order to remove lint, hair, and the like entangled with the rotating blade 102, the mounting tool 29 is removed, the closing plate 28 is removed, and the pulley 108 is removed. Pulleys 108, 108 are provided around the shaft portions 109, 109 on the side where the shafts 109, 108 are not provided.
Side of the pulley 108, the shaft 109 on the side of the pulley 108,
109 is removed from the bearings 110, 110, and the second endless belt 1 is removed.
14b and the third endless belt 114c to pulleys 108, 108
Can be removed by removing the shaft portions 109, 109 serving as fulcrums from the bearings 110, 110. In the case of assembling, the opposite operation is performed.

When the brush body 35 becomes dirty, the mounting tool 29 is removed, the closing plate 28 is removed, and the closing plate 28 and the case body are removed.
15 to release the locked state of the second mounting claw portion 47 of the brush body 35 held therebetween. Then, while pulling the brush body 35 toward the second mounting claw portion 47, while removing the boss portion 36 from the mounting hole 42, the hooking claw portion 37 is removed from the hooking wall portion 43 and removed from the hooking hole 44, and the first mounting is performed. Install the claw 46
38, the brush body 35 is removed from the case body 15. Thereafter, cleaning is performed so that the brush bristles of the raising cloth 41 of the brush body 35 are stroked in the inclined direction. And the brush body 35 that was washed
Is mounted in the opposite operation to the above removal.

According to the above-described embodiment, an annular elastic member 99 such as an O-ring is provided in a groove 98a for preventing molding deformation such as sink of the wheel portion 98 of the driven rear wheel 96, and a brushed cloth is further provided on the outer peripheral surface. Since a certain protective sheet 100 is provided, for example, when the suction port body 11 travels back and forth during cleaning, a state in which the rear portion of the suction port body 11 that is generally frequently lifted from the floor surface and comes into contact with the floor surface again occurs. The floor surface is not damaged, and the generation of noise during traveling can be suppressed.

Further, since the protective sheet 100, which is a brushed cloth, is provided on the outermost periphery, the suction port body 11 can be easily slid and moved in the left-right direction which is the longitudinal direction intersecting the running direction, thereby improving the cleaning workability. it can.

Since the annular elastic member 99 is provided in the groove 98a for preventing molding deformation such as sink marks, the annular elastic member 99 is provided.
Can be reliably positioned and held without displacement.

On the other hand, the shaft support 92 of the head 91 of the air turbine 61
The position of the base end, which is the part connected to the wind turbine, is located between the width dimensions of the wind receiving plates 93, 93, so that the inertia force due to the rotation of the air turbine 61 acts and the umbrella portion 91 is deformed in the vertical direction which is the axial direction. Thus, it is possible to prevent a reduction in rotational torque and generation of noise due to contact with other parts.

A first bearing 66 and a second bearing for rotatably supporting the shaft 65 of the air turbine 61.
69 is located outside the turbine chamber 62 and not in the intake air passage 78 through which the intake air flow 73 flows, so that even if fine dust is mixed into the intake air flow 73, the first bearing 66 and the second bearing
It is possible to prevent dust from adhering to the bearing 69, thereby preventing smooth rotation of the shaft 65, and preventing the first bearing 66 and the second bearing 69 from being damaged by the dust that has been caught.

By the way, when the suction port body 11 is advanced by moving the suction port body 11 on the floor surface and cleaning by pushing and pulling the end of the hose, the end of the hose is pushed. Therefore, a force is applied to the suction port body 11 to be pressed against the surface to be cleaned. In addition, when the suction port main body 11 is retracted, the end of the hose is pulled, so that the suction body 11 is subjected to a lifting force from the surface to be cleaned, so that there is almost no pressing force on the surface to be cleaned.

For this reason, the second rotating blade 102, which rotates in reverse when the suction port body 11 to which the pressing force is applied moves forward, is the first rotating blade which rotates in reverse when the suction port body 11 to which no pressing force is applied retreats. From 101, a large frictional force is applied from the surface to be cleaned. Note that, when the suction port main body 11 rotates forward with respect to the traveling direction, the traveling of the suction port main body 11 is assisted.

In the above embodiment, since the spiral angle of the blade portion 105 of the second rotary blade 102 is larger than the spiral angle of the blade portion 105 of the first rotary blade 101, the perpendicular of the plane of the blade portion 105 is In addition, the inclination angle with respect to the rotation direction increases, and the contact area with the surface to be cleaned decreases. For this reason, assuming that the pressing force applied to the suction port main body 11 is equal between the time of forward movement and the time of retreat, the vector amount received from the surface to be cleaned on the plane of the blade portion 105 is larger than that of the first rotating blade 101 by the second rotating blade 102. And the frictional force received from the surface to be cleaned is reduced.

Therefore, during forward movement with pressing force, the second
By reducing the frictional force applied to the blade portion 105 of the rotating blade 102, the load on the air turbine 61 and the drive transmission means is reduced, the wear of the blade portion 105 is reduced, and the life is prolonged. The traveling performance at the time of forward running under pressure can be improved. Further, at the time of retreat, the dust is scraped off by the blade portion 105 of the first rotating blade 101 of reverse rotation having a large frictional force with the surface to be cleaned having a small helical angle, so that the cleaning performance does not deteriorate.

Further, since the blade portion 105 has a raised cloth, a mandrel is required to provide a cloth blade portion having the raised cloth.
The floor polishing effect and the sweeping effect can be obtained without increasing the diameter of 104, and the dust scraping effect due to the provision of the cloth blade portion in place of the blade portion 105 can be prevented, so that the cleaning performance can be improved.

Further, since the raised cloth is integrally formed, the raised cloth can be formed in the same manner as the formation of the blade section 105 only by disposing the raised cloth in the mold, and a step of attaching to the separately formed blade section 105 is unnecessary. Manufacturability can be improved.

On the other hand, for example, when a hose is placed on the floor when moving a cleaning location or moving furniture such as a chair or a table, the end leading out in the direction of the communication pipe 56 is moved to the case body 15.
The lower surface of the case body 15 is separated from the floor surface in a state where the case body 15 is pivoted downward with respect to. Further, when the lower surface of the case body 15 is separated from the floor surface, air is sucked from the suction port 20 without resistance.

In the above embodiment, the opening edge of the communication pipe 56 facing the suction port 20 is opened on the inside of the opening edge of the suction port 20 without being covered by the edge of the suction port 20 so as to be substantially flush with each other. Because there is no wall-shaped portion that generates turbulence inside the suction chamber 21 side of the opening edge of the suction port 20, for example, when the rear end of the communication pipe 56 is turned upward, Raising the main body 11 from the floor surface prevents the noise caused by turbulence in the wall-shaped part and improves the suction efficiency when the front part of the suction main body 11 is turned downward by its own weight. it can. Furthermore, since there is no wall-shaped portion inside the suction port 20 on the suction chamber 21 side, even when the rear end of the communication pipe 56 is rotated upward, the intake airflow flowing through the suction port 20 is smoothly connected to the communication pipe. Since it is sucked into 56, it can prevent the generation of noise due to turbulence,
The suction efficiency can be improved. In addition, in the state of being placed on the floor surface, the suction air volume is smaller than when the lower surface of the suction inlet main body 11 is separated from the floor surface, and the noise due to the suction air flow is blocked by the floor surface. Not felt as noise.

Further, since the suction port 20 is expanded toward the second cleaning body chamber 19 and the opening shape of the lower surface of the second cleaning body chamber 19 is formed in a convex shape, for example, the surface to be cleaned has a long hair. In the case of a carpet or the like, it is possible to prevent the hair of the carpet from sneaking into the lower surface of the case body 15 and to reduce the running property.
The air sucked into the inside is smoothly sucked into the suction port 20, and noise due to turbulence can be reduced.

On the other hand, for example, a rib or the like is separately provided on the lower body case 12, and in order to hold the filter member 54 such as a soft sponge without deformation by the rib, it is necessary to support the filter member 54 with a surface. If the ribs are formed so as to be supported on the surface, the lower body case 12 may be deformed such as sink marks during molding. By the way, in the above-described embodiment, the soft filter member 54 is folded downward in a substantially U-shape by the holding wall portion 52 and the holding pin portion 53, and the inside of the second drive transmission chamber 25 and the shaft support are formed. The filter member 54 is detachably mounted so as to cover the leak window portion 51 so that dust does not accumulate in the chamber 26, and the filter member 54 is prevented from falling off by a tongue piece 55b protruding from the bumper 14.

For this reason, since a part of the easily manufactured bumper 14 sandwiched between the upper body case 13 and the lower body case 12 is used, the surface can be positioned and held without using separate ribs or other members. By providing the tongue piece 55b on a bumper that is easy to form by preventing deformation at the time of molding such as sink marks due to the provision of the ribs and the like, the productivity can be improved.
Further, for example, the filter member 54 is folded back to sandwich a flat jig, and in this state, the filter member 54 can be mounted by being pressed against an intermediate position of the filter member 54. An improvement is obtained.

Also, since it is press-fitted and made detachable,
When the filter member 54 becomes dirty, the filter member 54 can be easily removed and washed, and maintenance and management become easy.

Since the pin-like holding pin 53 which does not cause sink marks is provided as a holding portion for holding the filter member 54, the filter member 54 can be easily held with a simple structure.

Further, in the above-described embodiment, the first cleaning body chamber 18 and the second cleaning body chamber 19 communicating with the suction port 20 are located between the first cleaning body chamber 18 and the second cleaning body chamber 19 so as to be substantially left and right with respect to the traveling direction of the suction port main body 11. Since the brush body 35 which is horizontally long in the direction is attached, the first cleaning body chamber 18 and the second cleaning body chamber 19 facing the floor surface become negative pressure, and the brush body 35 is pressed against the floor surface. The effect of scraping and sweeping dust by the brush body 35 and the effect of floor polishing can be improved. Further, for example, when the suction port body 11 moves forward, dust that has been scraped or swept up on the front side of the brush body 35 is sucked in from the first cleaning body chamber 18 on the front side at the suction port 20 via the communication path 49, and the brush is retracted when retreating. The dust scraped or swept up on the rear side of the body 35 is sucked into the suction port 20 from the second cleaning body chamber 19 on the rear side, so that the dust is captured by the brush body 35 regardless of the traveling direction of the suction port body 11. Dust can be reliably sucked in,
Cleaning efficiency can be improved.

The brush body 35 provided with the brush cloth 41 having the unidirectionality in which the brush bristles are inclined is mounted such that the brush bristles are inclined rearward in the running direction of the suction port main body 11. Suction port body by pushing movement of mouth body 11 when moving forward
11 is pressed against the floor surface and the load increases, but because the brush hairs are in the sleeping direction, the resistance when traveling on the floor surface is small,
Since the suction port body 11 is pulled up when retracted, a force is exerted to lift the suction port body 11 from the floor surface.Even if brush hairs stand upright and scrape dust, the traveling load is not increased and the dust is efficiently scraped. I can take it.

Also, at both ends of the pedestal portion 40 of the brush body 35,
Since the first mounting claw portion 46 and the second mounting claw portion 47 having different shapes that can be disengaged from the brush mounting portion 34 of the lower main body case 12 are provided, the directionality of the brush body 35 is surely not reversed. Can be installed.

The closing plate 28 for attaching and detaching the first rotating blade 101 and the second rotating blade 102 to and from the case body 15 is provided.
The brush body 35 is attached by attaching the closing plate 28.
Since the second mounting claw portion 47 at one end is held between the case body 15 and the case body 15, there is no need to separately support the structure, the structure for mounting the brush body 35 can be simplified, the manufacturability can be improved, and the ease can be improved. The brush body 35 can be attached and detached.

Further, since the second mounting claw portion 47 is formed so as to be sandwiched by the closing plate 28 and the end face abuts against the side surface of the closing plate 28, the movement in the longitudinal direction can be restricted, and the brush body 35 can be reliably positioned. Can hold.

Further, since the brush body 35 is detachable, even if the brush body 35 becomes dirty due to the adhesion of dust, only the brush body 35 needs to be cleaned, so that the maintenance management can be improved.

Also, since the hooking claw 37 of the brush mounting portion 34 for locking the pedestal portion 40 of the brush body 35 is located in the communication passage 49 through which the suction air flow 75 flows, a mold structure such as a slide mechanism is required. Even if it is not used, the mold can be easily removed, and even if an opening is formed due to the formation of the hook portion 37 for the removal of the mold,
Since the brush body 35 is covered with the raising cloth 41, the appearance is not impaired.For example, a decrease in the rotational torque of the air turbine 61 due to a decrease in the airflow of the intake airflow 73 due to leakage, a decrease in suction efficiency, and the like can be prevented. The dust entering the interior 15 reaches the communication passage 49 and is sucked through the suction port 20 through the second cleaning body chamber 19, so that the dust does not accumulate in the case body 15 and maintenance management for maintaining a clean state is performed. It will be easier.

Further, the tips of the hooking claw portion 37 and the boss portion 36 are located in the brush mounting portion 34 having a groove shape, and the brush body 35 is mounted in the brush mounting portion 34.
The boss 36 for attaching the brush body 35 that receives load due to contact with the floor surface
37, the load is less likely to be applied to the first mounting claw portion 46, the second mounting claw portion 47, and the like, and damage to each part can be prevented, and the brush body 35 does not protrude from the lower surface of the case body 15. improves.

Further, since the hook-shaped hooking claw portion 37 is provided, the brush body 35 can be securely attached to the lower surface of the case body 15.

On the other hand, the supply of the intake airflow 73 to the air turbine 61 in the turbine chamber 62 is performed by supplying the airflow 73 into the turbine chamber 62 from a radial position substantially symmetric with respect to the shaft 65 of the air turbine 61. A load from one direction is not applied to the shaft body 65 serving as a rotating shaft on the turbine 61, and the air turbine 61 can be rotatably supported without any backlash for a long period of time, and the air turbine 61 can be efficiently rotated. .

In order to increase the air flow of the intake airflow 73 by increasing the opening area of the intake port 23 and improve the rotational torque of the air turbine 61, the rear part of the upper main body case 13 is located on both sides of the communication pipe 56. In general, since the suction port 23 is opened, the rear portion of the suction port main body 11 is located on the floor surface where the dust is removed to some extent when moving forward, so that the dust enters through the suction port 23. Difficult, air turbine 61
In addition to preventing the rotation torque from being reduced due to the adhesion of dust to the air, the intake
23 is not easily covered, and even if one of the intake ports 23 is covered, the intake airflow 73 can be supplied to the air turbine 61, and the air turbine 61
Is obtained.

Further, since the intake ports 23 are formed so that the left and right openings have substantially the same area, the left and right intake air flows 73 are formed.
Of the air turbine 61 is not applied to the air turbine 61 in one direction, the rotation of the air turbine 61 can be more stably obtained, and the appearance is substantially symmetrical, so that the appearance can be improved.

When the air is supplied to the air turbine 61 from the radial direction, the intake port 23 which is located on the left and right of the communication pipe 56 and opens.
Flow direction of the intake air flow 73 from the air turbine 61 is in the opposite direction to the air turbine 61, but the intake air flow 73 flowing in the opposite direction to the rotation direction of the air turbine 61 flows into the intake chamber 24b. Since the curved straightening plate 83 for reversing the flow direction is provided, the direction of the intake air flow 73 can be easily changed with a simple structure, and the air turbine 61 is rotated by the intake air flow 73 in the same direction as the rotation direction of the air turbine 61. The rotation torque can be improved.

Further, since the current plate 83 is composed of the lower current plate 83a and the upper current plate provided in the lower body case 12 and the upper body case 13 in a rib shape, the strength of the case body 15 can be improved.

In the above embodiment, not only the canister type vacuum cleaner but also an upright type in which the suction main body 11 is formed directly on the lower surface of the vacuum cleaner main body,
The present invention can also be applied to a self-propelled vacuum cleaner or the like in which the vacuum cleaner body and the suction port body 11 are integrated.

Further, a valve or a shutter may be provided separately so that the opening degree is continuously adjusted in the middle of the intake air passage 78 so that the rotation speed of the first rotating blade 101 and the second rotating blade 102 can be varied. it can.

Further, the intake ports 23 are located on both sides of the communication pipe 56 and opened, respectively.
Any position may be supplied from a position substantially symmetrical with respect to the 61 shaft body 65, and the supply is not limited to a pair.

The rectifying means is not limited to the curved plate-shaped rectifying plate 83, but may be any structure that changes the flow direction of the intake air flow 73.

[0098] Although the flat type air turbine 61 has been described with the vertical direction as the axis, any air turbine 61 that rotates by supplying the intake airflow 73 from the radial direction may be used. Further, the driving means is not limited to the air turbine 61, but may be an electric motor or the like.

In the above description, the communication passage 49 is formed in a substantially cylindrical shape. However, the communication passage 49 may be formed in a concave groove shape that opens downward on the lower surface of the case body 15, for example. In this case, the brush body 35 may be divided into two parts, or the brush body 35 may not be provided. And, by forming the groove, the dust can be prevented from being caught and the maintenance management such as the removal of the dust can be facilitated.

On the other hand, the blade portion 105 is provided only on the first rotating blade 101, but the blade portion 105 may be provided on the second rotating blade 102.

Also, the first cleaning blade chamber 101 and the second cleaning blade chamber 102 are provided with the first rotary blade 101 and the second rotary blade 102, respectively. The same effect can be obtained even if a plurality of rotary cleaning bodies are provided in one rotary cleaning body chamber.

Further, the number of cleaning sections such as the blade section 105 of the first rotating blade 101 is reduced by the second rotating blade 102.
The number of cleaning sections such as the blade section 105 may be larger than the number of cleaning sections. In this case, when the suction port main body 11 is retracted, the pressing force against the surface to be cleaned is released and the cleaning portion of the first rotating blade 101, which hardly increases the frictional force with the surface to be cleaned, reduces the running performance. , Dust removal efficiency can be improved, and cleanability can be improved.

As the blade portion 105, one edge of the raised cloth is integrally attached to the bulging portion and the raised cloth is integrally attached to one surface of the plate portion, but not to the plate portion. You may attach only to a bulge part.

Furthermore, the cloth is not limited to a brushed cloth having a brushed surface on one side, but may be a brushed cloth provided with a brushed surface on both sides, a woven cloth having no raised cloth, a nonwoven fabric, and the like. Any fabric may be used.

The brush body 35 is not limited to the one having the raised cloth 41, but may be any one such as one in which brush bristles are directly planted on the pedestal portion 40.

On the other hand, between the first bearing 66 and the first bearing chamber 67 of the first partition 68 serving as a bearing, the second bearing 69 and the second partition 71 of the second partition 71 serving as a bearing are provided. An elastic member such as an elastic sheet may be interposed between the bearing chamber 70 and the upper body case 13. According to this configuration,
Generation of noise due to vibration or the like during rotation of the air turbine 61 can be prevented.

Further, although the description has been given by providing the driven rear wheel 96 with the annular elastic member 99 and the protection sheet 100, the driven rear wheel 96 may be provided on the driven front wheel 97.

The same effect can be obtained even if the protective sheet 100 is provided only on the outer peripheral surface of the annular elastic member 99 projecting from the outer peripheral surface of the wheel portion 98.

[0109]

According to the first aspect of the present invention, since the raised cloth is provided on at least the outer peripheral surface of the annular elastic member protruding from the outer peripheral surface of the traveling wheel, the impact from the surface to be cleaned is reduced. Absorbed by the annular elastic member, noise can be reduced and damage to the surface to be cleaned can be prevented, and the brushed cloth located at the outermost position that comes into contact with the surface to be cleaned and has low frictional resistance with the surface to be cleaned rotates the running wheels. The traveling wheel can easily slide in the direction intersecting the direction, and the steering of the traveling direction of the case body can be easily performed, so that the traveling performance 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, for example, deformation such as sink marks during molding is formed on the outer peripheral surface of the traveling wheel. The annular elastic member is engaged with the groove-shaped portion provided in the concave groove along the circumferential direction for preventing the above, so that the annular elastic member can be reliably positioned and fixed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a driven rear wheel of a suction port body of a vacuum cleaner according to the present invention.

FIG. 2 is a partially cutaway plan view showing the suction port main body.

FIG. 3 is a bottom view of the same.

FIG. 4 is a front sectional view of the same.

FIG. 5 is a side sectional view showing a state where the communication pipe is turned to the lowest position.

FIG. 6 is a side sectional view showing a state in which the communication pipe is turned to the uppermost position.

FIG. 7 is a side sectional view, partially cut away, showing a portion of the communication passage of the suction port main body.

FIG. 8 is a side sectional view, partially cut away, of the suction port main body in the vicinity of the drive conversion means.

Fig. 9 is a partially cutaway bottom perspective view showing the vicinity of a closing plate of the suction port main body.

FIG. 10 is a bottom perspective view showing the vicinity of the closing plate of the suction port main body in a state where the closing plate is removed and a part of the bottom is cut away.

FIG. 11 is a plan view showing a base of the brush body.

FIG. 12 is an exploded perspective view showing the vicinity of the leak window part.

FIG. 13 is an explanatory diagram illustrating a weight balance showing the air turbine.

[Explanation of symbols]

 11 Suction port body 15 Case body 20 Suction port 96 Driven rear wheel as running wheel 98a Groove as groove-shaped portion 99 Ring elastic member 100 Protective sheet as brushed cloth

Claims (2)

[Claims] 1. A case body having an inlet opening on a lower surface facing a surface to be cleaned, a traveling wheel rotatably mounted on the case body and grounding on the surface to be cleaned, and attached to an outer peripheral surface of the traveling wheel. A suction port body for a vacuum cleaner, comprising: an annular elastic member provided; and a raised cloth provided on at least an outer peripheral surface of the annular elastic member protruding from an outer peripheral surface of the traveling wheel. 2. The vacuum cleaner according to claim 1, wherein the traveling wheel includes a groove-like portion provided on the outer peripheral surface in a concave groove along the circumferential direction and engaged with the annular elastic member. Suction body.