JPH1156699A - 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 traveling performance can be remarkably improved without reducing the effect of scraping out dust. SOLUTION: First and second recessed groove-like cleaner chambers 18, 19 for rotatably storing a first rotary blade 101 and a second rotary blade 102 are formed on the lower surface of a case body 15. A recessed groove-like brush installation part 34 for removably installing a brush member 35 is provided on the lower surface of the case body 15 of the first and second cleaner chambers 18, 19. The lower surface of the case body 15 of the front edge in the advancing direction of the brush installation part 34 is projected downward from the rear side to form a projecting part 36. The brush member 35 has a raised cloth piece 41 having brush bristles inclined obliquely toward the direction. During the advance of the suction opening main body, in which the pressing force is applied, the fuzz of a carpet can be prevented from being caught in the base end parts of the bristles of the brush of the front of the laid brush member 35 by the projecting part 36 so as to improve the traveling performance. During the backward movement, in which the pressing force is not applied, the bristles of the brush are raised to scrape out dust.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port of a vacuum cleaner provided with a cleaning member having brush bristles on a lower surface.

[0002]

2. Description of the Related Art Conventionally, as a suction port body of a vacuum cleaner having a suction port opened on the lower surface of a case body and a cleaning body having brush hairs, for example, the cleaning body is directly attached to the case body with an adhesive or the like. Various configurations are known, such as a configuration in which the cleaning element is attached and fixed, and a configuration in which an operating element is operated according to the type of the surface to be cleaned to advance and retreat the cleaning body assembled from the lower surface.

[0003]

By the way, in the suction opening of the conventional vacuum cleaner, the cleaning body is provided with brush bristles so as to be substantially perpendicular to the lower surface of the case body.
When the case body travels during cleaning, especially when the surface to be cleaned is a carpet or the like, the brush bristles receive resistance such that the bristles get caught on the carpet hair, and the traveling performance is reduced. Then, at the time of forward movement in which a force for pressing the case body against the surface to be cleaned by the pushing action is applied,
Since the brush bristles receive greater resistance, the running performance is further reduced.

[0004] Therefore, it is conceivable to improve the running performance by reducing the resistance from the carpet, particularly when the carpet is advanced, by providing the brush bristles inclining backward. However, when cleaning the carpet, the tip of the cleaning body brush bristles comes into contact with the carpet, so that the case is inclined so as to fall backward when the case body advances, but the brush located at the base end of the cleaning body, that is, the brush positioned forward when moving forward. Since the entire bristles are exposed, the tips of the bristles of the carpet penetrate into the base ends of the brush bristles, resulting in great resistance. For this reason, the traveling performance of the case body cannot be greatly improved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a suction port of an electric vacuum cleaner capable of greatly improving the running performance without reducing the dust scraping effect.

[0006]

According to a first aspect of the present invention, there is provided a vacuum cleaner having a suction opening provided on a lower surface of the case, the suction opening being provided on a lower surface facing a surface to be cleaned. A cleaning body that has brush bristles inclined toward the rear of the running direction of the case body and is elongated in a direction intersecting the running direction; and the brush at least near a front edge of the cleaning body in the running direction. And a protruding portion protruding downward from the base end portion of the hair.

[0007] The case body has a brush hair inclined toward the rear in the running direction of the case body on the lower surface of the case body having an inlet opening on the lower surface opposite to the surface to be cleaned in a direction intersecting the running direction. In addition to the provision of the elongated cleaning body, the case body is pressed against the surface to be cleaned by providing a protruding portion protruding downward from the base end portion of the brush bristles at least near the front edge of the cleaning body in the running direction. When the case body is moved forward, the protruding portion protrudes downward, for example, to prevent the bristle of a carpet from biting into the base end of the brush bristle in a lying state, thereby preventing a decrease in running performance. When the case body retreats, the force that presses the case body against the surface to be cleaned is not applied.
Cleanability is improved.

The suction body of the vacuum cleaner according to claim 2 is
A case body having an inlet opening on the lower surface facing the surface to be cleaned, and brush bristles provided on the lower surface of the case body and inclined toward the rear in the running direction of the case body and intersecting the running direction. A cleaning body that is elongated in the direction of movement of the cleaning body, and a groove-shaped groove-shaped portion in which the base end portion of the brush bristles is located at least at the front edge of the cleaning body with respect to the running direction and opens downward. It was done.

The lower surface of the case body, which has an inlet opening on the lower surface facing the surface to be cleaned, has brush bristles inclined rearward in the running direction of the case body in a direction intersecting the running direction. In addition to the provision of the elongated cleaning body, the base body of the brush bristles at least at the front edge of the cleaning body with respect to the traveling direction is located and the concave groove-shaped portion that opens downward is provided. When the case body is moved forward with a force pressing the surface to be cleaned, for example, carpet hair is prevented from biting into the base end of the lying brush hair located in the concave groove-shaped portion and traveling. Prevents the deterioration of the performance, and when the case body retreats, there is no force to press the case body against the surface to be cleaned.
Cleanability is improved.

[0010]

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. 1 to FIG. 7, 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 body case 12 is provided with a rib 17 formed substantially vertically on the upper surface, and a suction chamber as a rotary cleaning body chamber which is horizontally elongated in the left-right direction on the front side, which 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 an 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.

On the lower surface of the lower body case 12, 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 body case 12, a brush mounting portion is provided between the first cleaning body chamber 18 and the second cleaning body chamber 19, and is formed as a substantially elongated groove-shaped groove in the left-right direction. 34
A brush body 35 as a cleaning body is detachably attached to the brush mounting section. FIG.
As shown in FIG. 5, the lower surface of the lower main body case 12 at the front edge of the brush mounting portion 34 projects downward from the rear edge portion, and the projecting portion constitutes a projecting portion 36.

The brush mounting portion 34 has a boss portion 37a projecting downward in a substantially cylindrical shape, and a tip protruding substantially in an L shape toward the shaft support chamber 26 side of the brush mounting portion 34. A hook-shaped hooking claw 37b is protruded. A mounting recess 38 is provided at the end of the brush mounting portion 34 opposite to the side where the hooking claw 37b projects. The boss 37
a and the tip of the hooking claw portion 37b are located inside the brush mounting 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. In addition, one edge of the pedestal portion 40 is formed to be higher than the other edge of the pedestal portion 40 in correspondence with the projecting portion 36 of the lower body case 12, and the portion of the pedestal portion 40 that protrudes is also a protruding portion. 36
Is configured.

The pedestal portion 40 is provided with a mounting hole 42 into which the boss portion 37a of the brush mounting portion 34 is removably fitted, and a hooking wall on which the tip of the hooking claw portion 37b is engageable and disengageable. A hook hole 44 having a portion 43 is provided. As shown in FIG. 10, the mounting hole 42 is formed in a longitudinal direction so that the boss portion 37a can be inserted even if an axial displacement occurs. 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 different shape from the first mounting claw portion 46 at the other end in the longitudinal direction. A second mounting claw 47 that cannot be disengaged protrudes from the mounting recess 38. As shown in FIGS. 8 and 9, the side surface of the second mounting claw portion 47 is locked by one edge of the closing plate 28, and is held between the closing plate 28 and the case body 15. The end face abuts against 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 rearward in the running direction of the case body 15, and the protruding portion 36 is mounted on the brush body 35. Is protruded downward from the base end portion of the brush bristles.

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 hook claw 37b 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. 11, the upper body case 13 is provided with a pair of holding walls 52, 52 which are located on both sides of the leak window 51 in a wall shape, and are provided 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 fixedly mounted substantially at the center of the case body 15. The middle case 63 is provided with a first bearing 66 that opens downward and fixes a first bearing 66 that rotatably supports a lower end of a shaft body 65 that is a substantially cylindrical rotating shaft of the air turbine 61. The first drive transmission chamber 22 is partitioned by the chamber 67 and the rib 17 of the lower body case 12. Also, the middle case 63 has a second bearing chamber 70 that opens upward and holds a second bearing 69 that rotatably supports the upper end of the shaft 65 with the upper body case 13. And a second partition 71 that is positioned and held on the lower surface of the upper body case 13 and faces the first partition 68 to partition the turbine chamber 62. Further, the first bearing chamber 67 and the second bearing chamber 70 are located outside the turbine chamber 62. Also, the second
Bearing 66 housed in the bearing chamber 70 of the
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 disk-shaped umbrella portion 91 slightly curved in a funnel shape toward the center side. A cylindrical support portion 92 is integrally formed, and the bottom surface of the umbrella portion 91 is formed so as to project substantially radially without being located at the center portion on the lower surface of the curved surface side of the umbrella portion 91. A plurality of curved wind receiving plates 93, 93 are integrally formed to protrude in a wall shape so as to be opposed to each other, and are configured in a horizontal turbine shape. Note that, as shown in FIG. 12, the position where the air turbine 61 is supported and the position where it is connected to the shaft 65 of the umbrella portion 91 are the wind receiving plates 93 and 93.
The position between the extension lines of the two edges in the width direction along the axial direction of the head, that is, the position of the base end which is a portion connected to the shaft support portion 92 into which the shaft body 65 of the umbrella portion 91 is integrally inserted, is a wind receiver. It is located between the width dimensions of the 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 body case 12, and a driven rear wheel 96 is rotatably supported by the shaft. A driven front wheel 97 is rotatably provided at both ends of the front part. A driven front wheel chamber 97a that is pivotally supported is formed.

Further, as shown in FIG. 13, the driven rear wheel 96 is provided with a groove 98a along the circumferential direction on the outer peripheral surface of the wheel portion 98 to prevent molding deformation such as sink of the wheel portion 98. 98
An elastic member 99 such as an O-ring is provided in a, and a protective sheet 100 which is a flexible member such as cloth or an elastic member such as rubber is provided on the outer peripheral surface. Note that the outer peripheral surface of the elastic member 99 is in a state of protruding 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
The first and second rotary blades 102 each have a mandrel 104 having a spiral groove 103 formed in a clockwise direction on the peripheral surface of, for example, an aluminum alloy, and the mandrel 104 has flexibility in the groove 103. A plurality of, for example, four blade portions 105 as scraping means as a cleaning portion made of, for example, soft vinyl chloride are spirally engaged with the outer peripheral surface so as to protrude in a wall shape. As shown in FIG. 3, the second rotating blade 102 has a larger helix angle than the first rotating blade 101, that is, the twisting state is stronger. In addition, the blade portion 105 is formed by forming a bulged portion 107 in which one side edge of an elongated flat plate portion 106 in the longitudinal direction is engaged with the groove portion 103 of the mandrel 104 so as to be thick.

Further, a pulley 108 is provided at one end 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 body 112, a second shaft 117a and a third shaft 117b, each having a substantially rod shape, are disposed so as to be rotatable substantially vertically up and down along the horizontal direction of the case body 15. 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.

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.

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

At the time of cleaning, the suction port main body 11 is connected to an electric 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 a long-haired carpet, the first cleaning body room 18 and the second cleaning body room are used.
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 is a trumpet-shaped air supply passage 79a, 79 whose cross-sectional area is gradually reduced.
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. Then, dust is scraped off from the floor by the rotation of the first rotating blade 101 and the second rotating blade 102. The scraped dust located in the first cleaning body chamber 18 passes through the communication passage 49 to the second cleaning body chamber 18.
The dust located in the second cleaning body chamber 19 is sucked through the suction port 20 as it is, and flows into the communication pipe 56 via the suction chamber 21. Further, the intake airflow 73 flowing into the turbine chamber 62 is supplied to an intake regulating section 74 below the air turbine 61.
From the inside, the air flows into the suction airflow 75 via the suction chamber 21 forming the suction air passage 58 through the air intake / exhaust port 76, and flows into the communication pipe 56.

Further, when the suction port body 11 moves forward, the brush bristles inclined toward the rear of the raised cloth 41 of the brush body 35 are in a lying state, and sweep the dust so as to stroke the floor.
At this time, the base end of the brush bristles in the forward direction of the brush body 35 in the forward direction of the brush body 35 is covered and protected by the protruding portions 36. For example, when the floor surface is a carpet or the like, the bristles of the carpet are brush bristles. Is prevented from being caught in the base end of the base. Then, when the suction port main body 11 is retracted, the brush bristles of the raising cloth 41 of the brush body 35 rise upside down due to friction with the floor surface and scrape out dust.

By the way, at the time of cleaning, the end of the hose is pushed and pulled to move the suction port body 11 on the floor surface for cleaning. Therefore, when the suction port body 11 moves forward, Since the end is pushed, a force is applied to the suction port main 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, when the suction port main body 11 to which the pressing force is applied moves forward, the bristles of the carpet do not bite into the base end of the brush bristles of the brush body 35 at the protrusions 36 when the suction port body 11 moves forward. It is possible to prevent the running performance from being reduced by the brush bristles. Further, when the suction port body 11 is retracted, the brush bristles rise upside down due to friction with the floor surface and scrape out dust, so that it is possible to prevent the dust scraping efficiency from lowering and the cleaning performance from lowering.

On the other hand, when the floor surface is between the plates or the like, only the first rotary blade 101 located on the front side in the running direction comes into contact with the between the plates, and is swept up to the side of the wall so as to sweep the dust between the plates. The brush body 35 wipes the floor surface and performs flooring.

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, 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 is directed upward, the weight body 87 is positioned below the weight receiving portions 88a and 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 device 29 is removed and 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, the hook portion 37a is removed from the mounting wall portion 43 while the boss portion 37a is removed from the mounting hole 42, and the boss portion 37a is removed from the hooking hole 44 to remove the first mounting portion. The claw portion 46 is removed from the mounting recess 38, and 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 that was washed
35 is installed in the opposite operation to the above removal.

As described above, according to the above embodiment, the protruding portion 36 protruding downward from the base end portion of the brush bristles near the front edge of the brush body 35 in the running direction. Is provided, at the time of forward movement in which a force for pressing the suction port main body 11 against the floor surface is applied, the protruding portion 35 covers the base end of the brush bristles located on the front side in the lying state, and for example, the carpet bristles Can be prevented from biting into the base end of the brush bristles, preventing a decrease in running performance.
At the time of retreat when the force to press the
Dust can be efficiently scraped out with brush hairs that rise due to friction with the floor surface, thereby improving cleanability.

The brush body 35 provided with the brush cloth 41 having a unidirectional brush bristles is mounted so 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.

A first cleaning body chamber communicating with the suction port 20 is also provided.
18 and the second cleaning body chamber 19, the suction body 11
The first cleaning body chamber 18 and the second cleaning body chamber 19 facing the floor have a negative pressure because the brush body 35, which is horizontally long in the left-right direction with respect to the traveling direction of the Since the brush body 35 is pressed against the surface, it is possible to improve the effect of scraping and sweeping dust by the brush body 35 and the effect of floor polishing. Further, for example, when the suction port main body 11 moves forward, dust that has been scraped or swept up on the front side of the brush body 35 is removed from the first cleaning body chamber 18 on the front side.
From the suction port 20 through the communication passage 49, and the dust that has been scraped or swept up behind the brush body 35 during retreat is sucked into the suction port 20 from the second cleaning body chamber 19 on the rear side. Irrespective of the running direction of the mouth main body 11, the dust caught by the brush body 35 can be reliably sucked, and the cleaning efficiency can be improved.

Further, a first mounting claw portion 46 and a second mounting claw portion 47 having different shapes that can be disengaged from the brush mounting portion 34 of the lower body case 12 are provided at both ends of the pedestal portion 40 of the brush body 35. Since the brush body 35 is provided, the brush body 35 can be securely mounted without reversing the directionality.

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, and the maintenance and management can be improved.

Further, since the hooking claw 37 of the brush mounting portion 34 for locking the pedestal portion 40 of the brush body 35 is provided in the communication passage 49 through which the suction airflow 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 hook claw 37b and the boss 37
The tip of a is located in the grooved brush mounting portion 34, and the brush body 35 is mounted in the brush mounting portion 34. The load is less likely to be applied to the boss portion 37a, the hooking claw portion 37b, the first mounting claw portion 46, the second mounting claw portion 47, etc., on which the brush body 35 to receive the brush body 35 is attached, and damage to each part can be prevented. 35 does not protrude from the lower surface of the case body 15, and the appearance is improved.

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

On the other hand, the second rotary blade 102, which rotates in reverse when the suction port body 11 to which the pressing force is applied, moves forward when the suction port body 11 to which no pressing force is applied reversely rotates when retracting. This results in a situation where a greater frictional force is received 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. Accordingly, the frictional force applied to the blade portion 105 of the second rotary blade 102 during forward movement with the pressing force is reduced, so that the load on the air turbine 61 and the drive transmission means is reduced, and the wear of the blade portion 105 is also reduced. As a result, the life can be prolonged, and the traveling performance at the time of forward movement in which the pressing force is applied 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.

On the other hand, when the hose is placed on the floor surface when moving a cleaning place or moving furniture such as a chair or a table, the end leading out in the direction of the communication pipe is lower than the case body. The lower surface of the case body separates from the floor surface in the state of turning. Further, when the lower surface of the case body is separated from the floor surface, air is sucked from the suction port 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, the intake airflow 73 flowing through the suction port 20 communicates smoothly even when the rear end of the communication pipe 56 is rotated upward. Tube 56
Therefore, the generation of noise due to turbulence can be prevented, and 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 is long 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, a part of the easily manufactured bumper 14 sandwiched between the upper main body case 13 and the lower main body case 12 is used, so that the surface can be positioned and held without using a separate rib or other member. By providing ribs and the like, deformation during molding such as sink marks due to the provision of ribs and the like can be prevented, and the productivity can be improved by providing the tongue piece 55b on a bumper that is easy to form.
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.

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 upper body case 13 is located on both sides of the communication pipe 56 at the rear part. 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 opening areas are substantially the same, 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 is opened.
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.

The shaft support 92 of the head 91 of the air turbine 61
Because the position of the base end, which is the part that connects to the wind turbine, is located between the width dimensions of the wind receiving plates 93, 93, even if centrifugal force due to the rotation of the air turbine 61 acts, the position of the center of gravity on the outer periphery of the air turbine 61 remains Since the 91 is located substantially in the radial direction at the position where it is connected to the shaft body 65, the umbrella portion 91 does not deform in the vertical direction, which is the axial direction. Damage and generation of noise can be prevented.

The intake air flow 73 acts on the entire surface of the head portion 91 of the air turbine 61 up to the central portion connected to the shaft 65, so that there is no space in which the intake air flow 73 does not flow, and the size can be reduced.

A first bearing 66 and a second bearing 66 rotatably supporting the shaft 65 of the air turbine 61.
The first bearing 66 and the second bearing 69 are located outside the turbine chamber 62 and not in the intake air passage through which the intake air flow 73 flows, even if minute dust is mixed in the intake air flow 73. It is possible to prevent the dust from adhering to 69 so that the shaft body 65 cannot be smoothly rotated, and that the first bearing 66 and the second bearing 69 are not damaged by the dust that has been bitten.

Further, by fixing both ends of the shaft 65 to the first bearing 66 and the second bearing 69,
Since the middle case 63 accommodating the air turbine 61 can be formed integrally, the assembling work of the suction port main body 11 is easy and the productivity can be improved.

On the other hand, an elastic member 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.
99, and a protective sheet 100, which is a flexible member such as cloth or an elastic member such as rubber, is provided on the outer peripheral surface. Even if the rear of the floor 11 rises from the floor surface and comes into contact with the floor surface again, the floor surface is not damaged, and the generation of noise can be suppressed. Further, when a brushed cloth is used as the protection sheet 100, 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, and the cleaning workability can be improved. In addition, since the elastic member 99 is provided in the groove 98a for preventing molding deformation such as sink marks, the elastic member 99 can be held without displacement.

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 shutter may be separately provided in the intake air passage 78 so as to continuously adjust the opening degree and change the rotation speed of the first rotating blade 101 and the second rotating blade 102. it can.

Further, the intake ports 23 are located on both sides of the communication pipe and are opened, respectively.
Any position may be supplied from a position substantially symmetrical with respect to the shaft 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.

Although the flat type air turbine 61 has been described with the vertical axis as the axis, any air turbine 61 that rotates by supplying the intake airflow 73 from the radial direction may be used. That is, for example, a wind receiving plate 93 may be provided on both surfaces of the umbrella portion 91.

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 opening 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, as the rotary cleaning body, the blade 10
5, in addition to the first rotating blade 101 and the second rotating blade 102, a rotating brush having a raised brush in a wall shape,
Any material such as a device provided with a cloth blade portion, a combination of a brush, a cloth blade portion, and a blade portion 105 may be used.

Further, the first rotating blade 101 and the second rotating blade 102 are provided in the first cleaning body chamber 18 and the second cleaning body chamber 19, 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.

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

Although the brush body 35 and the inside of the groove-shaped brush mounting portion 34 have been described, the brush body 35 may be directly mounted on the lower surface of the case body 15.

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.

Next, another embodiment will be described with reference to FIG.

In the embodiment shown in FIG. 14, the lower surface of the lower body case 12 at the front edge of the brush mounting portion 34 constituting the projecting portion 36 of the embodiment shown in FIGS. At least the front edge of the brush body 35 is mounted in the brush mounting portion 34 having a concave groove shape.

When the suction port main body 11 that applies a pressing force to the floor surface during cleaning moves forward, similarly to the embodiment shown in FIG. 1 to FIG. The base end of the bristles on the front side in the direction is located in the concave groove-shaped brush mounting portion 34, and is covered and protected by the lower body case 12 located on the front side, for example, the floor surface is a carpet. In such a case, it is possible to prevent the bristles of the carpet from biting into the base end of the brush bristles that are in a lying state, and to prevent a decrease in running performance. In addition, when the suction port body 11 retreats where no pressing force is applied, the dust is efficiently scraped off by the brush bristles rising upright.

In the embodiment shown in FIG. 14, the entire brush body 35 has been described as being mounted in the brush mounting portion 34. However, for example, the cross section of the brush body 35 is generally curved so as to be convex. The central portion protrudes downward from the lower surface of the lower body case 12, and at least the front side of the brush body 35 is from the lower surface of the case body 15 such that at least the longitudinal front edge is recessed from the lower surface of the lower body case 12. The same effect can be obtained with any structure provided so as to be located inside.

[0102]

According to the first aspect of the present invention, the suction opening of the vacuum cleaner has brush bristles on the lower surface of the case body inclined rearward in the running direction of the case body and intersects with the running direction. In addition to providing the cleaning body in a longitudinal direction in the direction of cleaning, and providing a protruding portion that protrudes below the base end portion of the brush bristles at least near the front edge of the cleaning body in the traveling direction, the case body is provided on the surface to be cleaned. When the case body to which the pressing force is applied moves forward, for example, the bristle of the carpet can be prevented from biting into the base end of the brush bristle in the lying state by the protruding portion protruding downward, thereby preventing a decrease in running performance. At the same time, dust can be efficiently scraped out by brush bristles that rise due to friction when the case body is retracted, in which a force pressing the case body against the surface to be cleaned is not applied, and the cleaning performance can be improved.

According to the second aspect of the invention, the suction body of the vacuum cleaner has, on the lower surface of the case body, brush bristles inclined rearward in the running direction of the case body and a direction intersecting the running direction. In addition to providing a longitudinal cleaning body, a concave groove-like portion is provided at the base end portion of the brush bristles on at least the front edge of the cleaning body with respect to the traveling direction, and is provided with a concave groove-like portion that opens downward. During forward movement of the case body, which exerts a force pressing the body against the surface to be cleaned, it is possible to prevent, for example, carpet bristles from biting into the base end of the lying brush bristles located in the concave groove-like portions, In addition to preventing a decrease in running performance, dust can be efficiently scraped out by brush hairs that rise due to friction when the case body retreats without a force for pressing the case body against the surface to be cleaned, thereby improving cleanability.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view showing a suction port body of an embodiment of a suction port body of a vacuum cleaner according to the present invention, in a state where a communication pipe is turned to the lowest position. It is a front sectional view.

FIG. 2 is a plan view partially cut away from the above.

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 pivoted to the uppermost position.

FIG. 6 is a partially cut-away side view showing a communication passage portion of the suction port main body.

FIG. 7 is a side cross-sectional view of the suction port main body in the vicinity of drive conversion means, with a portion cut away.

FIG. 8 is a partially cutaway bottom perspective view showing the vicinity of a closing plate of the suction port main body.

FIG. 9 is a bottom perspective view showing the vicinity of the closing plate of the suction port main body in a state in which the closing plate is removed and a part of the same is cut away.

FIG. 10 is a plan view showing a base of the brush body.

FIG. 11 is an exploded perspective view showing the vicinity of the leak window part.

FIG. 12 is an explanatory diagram illustrating a weight balance showing the air turbine.

FIG. 13 is a sectional view showing the driven rear wheel.

FIG. 14 is a side sectional view showing another embodiment of the suction opening of the vacuum cleaner of the present invention.

[Explanation of symbols]

 11 Suction port body 15 Case body 20 Suction port 34 Brush mounting part as concave groove 35 Brush body as cleaning body 36 Projection

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kiyoshi Ishikawa 43 Horiyamashita, Hadano City, Kanagawa Prefecture

Claims (2)

[Claims] 1. A case body having an inlet opening on a lower surface facing a surface to be cleaned, and a brush provided on a lower surface of the case body and inclined toward a rear side in a running direction of the case body. A cleaning member that is elongated in a direction intersecting the direction, and a protruding portion that protrudes downward from a base end portion of the brush bristle at least near a front edge of the cleaning member with respect to a traveling direction. A suction port body for a vacuum cleaner, characterized in that: 2. A case body having an inlet opening on a lower surface facing the surface to be cleaned, and a brush bristle provided on the lower surface of the case body and inclined toward the rear in the running direction of the case body. A cleaning body that is elongated in a direction intersecting the direction, and a groove-like groove in which a base end portion of the brush bristles is located at least at a front edge of the cleaning body with respect to a traveling direction and opens downward. A suction port body for a vacuum cleaner, comprising: