JPH1156702A - Suction aperture assembly for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction aperture assembly of a simple structure for a vacuum cleaner, to which a cleaning element is attachable, and further, which can be easily placed under maintenance care and services. SOLUTION: This vacuum cleaner comprises a suction aperture opened on the lower face of a case body 15 and a second cleaning element chamber which stores a second rotary blade and a first cleaning element chamber which stores a first rotary blade. The suction aperture which communicates with a communication pipe provided on the rear part of the case body 15 is opened into the second cleaning element chamber, and the first cleaning element chamber is caused to communicate with the second cleaning element chamber through a communication path 49. In addition, a recessed groove-type brush-mounted part 34 to which a brush body 35 with a raised cloth 41 having an inclined brush bristle is fitted in a freely detachable manner, is provided between the first cleaning element chamber and the second cleaning element chamber. Further, a hook-type catching claw part 37 which fits into the hooking hole 44 of the brush body 35 is formed protruding with the communication path 49, on the brush-mounted part 34. The suction aperture assembly need not be of a complicated shape and has an opening 37a for removing a mold which is generated due to the removal of the mold and is covered with the brush body 35. Besides, the suction aperture assembly sucks an intruding dust from the communication path 49, so that the assembly can be easily placed under maintenance care and services.

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 having a cleaning member detachably provided 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 a lower surface and provided with a brush body, for example, a structure in which a brush body is directly attached and fixed with an adhesive or the like, depending on the type of floor surface. Various configurations are known, such as a configuration in which an operator is operated to advance and retreat a brush body assembled from a lower surface.

By the way, it is difficult to implant brush bristles directly into the case body of the suction opening body, so that productivity cannot be improved. Therefore, a brush body having brush bristles planted on a pedestal portion can be attached to the case body. Assembled.

[0004]

However, in the case where the brush body is fixedly mounted or assembled, the brush body is easily stained due to the adhesion of dust and the appearance is deteriorated. Therefore, it is necessary to frequently remove the dust adhered to the brush body. However, the work of removing dust from the brush body is complicated.

[0005] Therefore, it is conceivable to attach a brush body to the case body detachably by, for example, protruding a claw or the like for detachably holding the brush body on the lower surface of the case body. However, if the claws are projected in a hook shape so that the brush body does not come off during cleaning, the removal of the claws will be performed in order to protrude the claws due to the limitations on the removal of the mold when molding the case body. For this reason, dust enters the case through the opening and accumulates inside the case, so that the suction port main body cannot be kept clean.
Further, in order to provide the claw portion so as not to form an opening, a slide function is required in the mold structure, and there is a problem that the mold cost increases.

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 a vacuum cleaner which has a simple structure, in which a cleaning body can be detachably mounted, and whose maintenance is easy.

[0007]

According to a first aspect of the present invention, there is provided a vacuum cleaner having a suction opening body having a suction opening on a lower surface facing a surface to be cleaned, and at least a lower surface formed by partitioning the case body. A communication path communicating with the suction port, a communication pipe communicating with the suction port through the communication path, and a distal end protruding downwardly from a lower surface of the case body where the communication path is located. And a cleaning member having a hook hole which can be engaged with and disengaged from the hook claw portion, and which is detachably attached to the lower surface of the case body.

[0008] At least a lower surface of the case body formed by partitioning the case body and having a communication passage communicating the suction port with the communication pipe is positioned with a hooking claw having a tip end projecting sideways downward. The cleaning member is detachably attached to the lower surface of the case body by engaging and disengaging a hook hole of the cleaning body with the hook claw portion.

[0009] The suction opening of the vacuum cleaner according to claim 2 is
A case body having an inlet opening on a lower surface facing the surface to be cleaned, a communication path formed at least in the lower surface by partitioning the case body and communicating with the suction port, and communicating with the suction port via the communication path; A communication pipe, a hook hole formed on the lower surface of the case body where the communication path is located,
A cleaning member having a hooking claw protrudably provided on the hooking hole so as to be detachably attached to the lower surface of the case body.

[0010] At least a lower surface of the case body is formed as a partition, and a hook hole is formed in the lower surface of the case body where a communication passage communicating the suction port with the communication pipe is located. The cleaning body is detachably attached to the lower surface of the case body by engaging and disengaging the hook claws.

[0011]

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 is a lower main body case 12 made of a synthetic resin such as acrylonitrile-butadiene-styrene (ABS) resin. And an upper body case of the same material which is fixedly coupled to an upper portion of the lower body case 12.
13 are joined by sandwiching the bumper 14 along the peripheral surface including the front surface of the lower body case 12 and the upper body case 13,
A rectangular case body 15 is formed.

The lower body case 12 has a rib 17 formed substantially vertically on the upper surface, and is formed in a concave groove shape 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 is defined as a rotary cleaning body chamber, which is also horizontally elongated in the left-right direction and opens on the lower surface, similarly to the rear side which is the retreating direction side. Are formed. In addition, the case body 15 is provided with a rib 17 so as to open a suction port 20 which opens downward substantially at the center of the second cleaning body chamber 19 and also functions as a leak port.
21, a first drive transmission chamber 22 partitioned from the approximate center between the first cleaning body chamber 18 and the second cleaning body chamber 19 to the other end, and substantially above the second cleaning body chamber 19. Intake chambers 24a and 24b positioned on both sides of the suction chamber 21 and opening a plurality of intake ports 23 formed in the upper main body case 13, and a second chamber partitioned on the other end side from the first drive transmission chamber 22; A second drive transmission chamber 25 and a shaft support chamber 26 partitioned at the end opposite to the second drive transmission chamber 25 are formed.

The suction port 20 is opened in a trumpet shape toward the second cleaning body chamber 19, and is formed so as to be concavely recessed rearward at a substantially central rear portion of the second cleaning body chamber 19. . Also, the second
The lower surface of the drive transmission chamber 25 is opened downward, and a closing plate 28 is detachably attached to the opening with 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 which is located between the first cleaning body chamber 18 and the second cleaning body chamber 19 and substantially in the left-right direction. 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.
By the formation of the hooking claw 37, a die-cutting opening 37a for die-cutting is opened at the base end.

A mounting recess 38 is provided at the end of the brush mounting portion 34 opposite to the side from which the hooking claw portion 37 of the brush mounting portion 34 projects. 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. 10, the mounting hole 42 is formed in a longitudinal direction so that the boss portion 36 can be inserted even if a positional displacement in the axial direction 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 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. 8 and 9, the second mounting claw portion 47 has a side surface locked by one edge of the closing plate 28 and an end surface abutting on the side surface of the closing plate 28 to extend in the longitudinal direction. Movement is regulated.

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, and
37a is closed.

The case body 15 includes a lower body case 12.
The bottom surface portion is divided into a substantially cylindrical shape with its lower surface partitioned, and a communication passage 49 for communicating the first cleaning body chamber 18 and the second cleaning body chamber 19 is provided. The hooking claw 37 of the brush mounting portion 34 is provided on the lower surface of the lower main body case 12 at a position corresponding to the communication passage 49. The communication passage 49 allows the opening on the lower surface of the first cleaning body chamber 18 to be similar to the opening on the lower surface of the second cleaning body chamber 19 where the suction port 20 is opened.
And 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 to protrude downward in a substantially cylindrical shape so as to face the leak window portion 51 so as to be positioned. Then, the filter member 54 such as a sponge is folded downward in a substantially U-shape at the inner surface of the upper main body case 13, the holding wall 52 and the holding pin 53, and the inside of the second drive transmission chamber 25 and In order to prevent dust from accumulating in 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 filter member, and protrudes inward from one edge of the mounting portion 55a in a wall shape and abuts against the lower end of the filter member 54 to hold the filter member 54 to prevent the filter member 54 from dropping off. A tongue piece 55b protrudes.

In the center of the rear part of the case body 15, a suction port is provided.
The communication tube 56 faces the rotating shafts 57 and 57 to face the lower case 20
It is pivotally supported by the upper body case 13 and the upper body case 13 so as to be rotatable at a predetermined vertical angle. 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 at the time when the end of the communication pipe 56 leading to the rear pivots to the lowest position.
The communication pipe 56 is open inside the edge of the suction port 20. 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, 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 shaft support 92 for fitting and fixing the shaft 65 at substantially the center on the curved surface side of the substantially disk-shaped umbrella 91 slightly curved toward the center. A plurality of curved wind receiving plates 93, 93 are formed on the curved surface side of the umbrella portion 91 so as to protrude substantially radially, and a plurality of curved wind receiving plates 93, 93 are formed so that the lower end edge thereof faces the intake regulating portion 74 with a slight gap therebetween. To form a horizontal turbine. In addition, as shown in FIG. 12, the position of the base end, which is a portion connected to the shaft support portion 92 of the umbrella portion 91, 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 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 member 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 spiral angle than the first rotating blade 101, that is, the twisting state is stronger. The blade portion 105 is formed such that one longitudinal edge of an elongated flat plate portion 106 is formed in a groove 103 of a mandrel 104.
The bulging portion 107 that engages with the wall is formed 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 of the raising cloth 41 of the brush body 35 sweep the dust so as to stroke the floor, 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 floor surface is between the boards, only the first rotating blade 101 located on the front side in the running direction comes into contact with the gap between the boards, and the first rotating blade 101 lifts up the dust between the boards to the wall. The brush body wipes the floor and floors.

Here, the lower surface of the suction port main body 11 is removed from the floor surface to remove furniture and the like and lint and hair when the first rotary blade 101 and the second rotary blade 102 are entangled. 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 108, 108 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, the closing plate 28 is removed, and the locked state of the second mounting claw 47 of the brush body 35 is released. And brush body 35
The boss portion 36 is removed from the mounting hole 42 while the hooking claw portion 37 is hooked on the wall portion while pulling the boss portion 36 toward the second mounting claw portion 47 side.
Then, the brush body 35 is removed from the case body 15 by removing the first mounting claw portion 46 from the mounting concave portion 38 by removing the brush body 35 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. Then, the washed brush body 35 is attached in an operation opposite to the above removal.

As described above, the first communication with the suction port 20 is performed.
The brush body 35, which is positioned between the cleaning body chamber 18 and the second cleaning body chamber 19 and is substantially horizontally long in the left-right direction with respect to the traveling direction of the suction port main body 11, is attached. The cleaning body chamber 18 and the second cleaning body chamber 19 become negative pressure and the brush body 35
Is pressed against the floor surface, so that the brush body 35 can scrape and sweep dust and improve the floor polishing effect. Further, for example, when the suction port body 11 is
The dust that has been scraped or swept up on the front side is sucked from the first cleaning body chamber 18 on the front side at the suction port 20 through the communication passage 49,
Dust 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, so that the dust is applied to the brush body 35 regardless of the traveling direction of the suction port body 11. The dust that has been captured can be reliably sucked in, and the cleaning efficiency can be improved.

The brush body 35 provided with the brush cloth 41 having unidirectional brush hairs with inclined bristles is mounted so that the brush bristles are inclined toward the rear of the suction port body 11 in the running direction. 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.

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 brush body 35 can be 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 is contaminated by 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 located in the communication passage 49 through which the suction air flow 75 flows, a mold structure such as a slide mechanism is required. The die can be easily removed without using it.
Does not impair the appearance because it is covered with the raised cloth 41 of the brush body 35, for example, it is possible to prevent a decrease in the rotational torque of the air turbine 61 and a decrease in the suction efficiency due to a decrease in the air volume of the intake airflow 73 due to leakage, and the like. Since dust entering the case body 15 from the die opening 37a reaches the communication path 49, the second
Because it is sucked from the suction port 20 through the cleaning body chamber 19 of
Maintenance management for maintaining a clean state without accumulating in the case body 15 is facilitated.

Further, the tips of the hooking claw portion 37 and the boss portion 36 are located in the brush mounting portion 34 having a concave 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 rotation shaft on the turbine 61, and the air turbine can be rotatably supported without any backlash stably for a long time, and the air turbine 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 to increase 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, the rear portion of the suction port main body 11 is located on the floor from which the dust is removed and dust is removed to some extent during forward movement, so that 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 ports 23 which are located at the left and right of the communication pipe 56 and open are provided.
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 edge of the communication pipe 56 facing the suction port 20 is not covered with the edge of the suction port 20, but is formed inside the edge of the suction port 20.
Since 56 is open and substantially on the same plane, there is no wall-like portion that generates turbulence inside the edge of the suction port 20, so for example, when the rear end of the communication pipe 56 is turned upward, That is, when the front portion of the suction port main body 11 is turned downward by its own weight by lifting the suction port main body 11 from the floor surface, it is possible to prevent the generation of noise due to the turbulent flow of the wall portion,
Suction efficiency can be improved.

On the other hand, for example, a rib or the like is separately provided on the lower body case 12 and it is necessary to support the soft filter member 54 with a surface in order to hold the soft filter member 54 without deforming the rib. When the lower main body case 12 is formed to be supported by a surface, there is a possibility that the lower main body case 12 may be deformed such as sink in molding. By the way, in the above-described embodiment, the soft filter member 54 is folded downward substantially U-shaped by the holding wall portion 52 and the holding pin portion 53, and the second drive transmission chamber is formed.
In order to prevent dust from accumulating in the inside 25 and the shaft support chamber 26, the leak window 51 is covered so as to be detachably mounted, and the filter member 54 is prevented from falling off by a tongue piece 55b projecting from the bumper 14. For this reason, since a part of the bumper 14 sandwiched between the upper body case 13 and the lower body case 12 is used, the positioning and holding can be performed without deforming the surface without using separate ribs or other members. The member 54 can be mounted by applying the member 54 to the mounting position and pressing the flat plate against the intermediate position of the filter member 54 to thereby improve the assemblability and the retention of the filter member 54 by the restoring force.

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.

An elastic member such as an O-ring is provided in a groove 98a for preventing a molding deformation such as a 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 is lifted off the floor and comes into contact with the floor again, the floor 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.

On the other hand, since the spiral angle of the second rotary blade 102 is set to be larger than that of the first rotary blade 101, the plane of the blade portion of the second rotary blade 102 with respect to the traveling direction of the suction port body 11 in the plane direction. Since the angle is larger than that of the first rotating blade 101, the suction body
The second rotating blade that rotates in reverse when the suction port body 11 moves forward, in which the load increases when pressed against the floor surface when pushing 11
The collision load between the blade part 105 of the 102 and the floor surface is reduced and the running performance can be improved, and the load is reduced by the force lifted from the floor surface when the suction body 11 is pulled. The first rotating blade 101 can effectively remove dust without increasing the running load.

In the above embodiment, the present invention is not limited to the canister type vacuum cleaner, but also includes an upright type in which the suction port 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 separately provided in the intake air passage 78 so that the opening degree is continuously adjusted and the rotation speed of the first rotary blade 101 and the second rotary blade 102 can be changed. it can.

Further, the intake ports 23 are located on both sides of the communication pipe and opened, but the intake air flow 73 is
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 air turbine 61 is described as being of a flat type 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.

Although the communication passage 49 has been described as being formed in a substantially cylindrical shape, the communication passage 49 may be formed, for example, in a concave groove opening downward on the lower surface of the case body 15. 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, in addition to the first rotary blade 101 and the second rotary blade 102, any of a rotary brush having a raised brush in a wall shape, a rotary brush having a cloth blade portion, and the like can be used. May be used.

In the above description, the first and second rotating blades 101 and 102 are provided in the first and second cleaning member chambers 18 and 19, respectively. The same effect can be obtained by arranging a plurality of rotary cleaning elements in one rotary cleaning element chamber.

Further, 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.

The brush body 35 can be detachably attached to a hook claw 37 provided on the lower surface of the case body 15 corresponding to the communication passage 49 so as to detachably engage a hook hole 44 provided in the brush body 35. The communication passage 49 is provided on the lower surface of the case body 15.
Even if a hook claw 37 is provided on the brush body 35 for engaging and disengaging the hook hole 44, the brush body 35 is similarly covered with the raised cloth 41 of the brush body 35, For example, it is possible to prevent a decrease in the rotational torque of the air turbine 61 and a decrease in the suction efficiency due to a decrease in the flow rate of the intake airflow 73 due to leakage, and dust entering the case body 15 from the hook holes 44 into the communication passage 49. Therefore, the air is sucked from the suction port 20 through the second cleaning body chamber 19, so that the air does not accumulate in the case body 15 and the maintenance and management for maintaining a clean state becomes easy.

Next, another embodiment of the suction port of the vacuum cleaner of the present invention will be described with reference to FIG.

The embodiment shown in FIG. 14 is similar to the embodiment shown in FIG.
The brush body 35 of the embodiment shown in FIG. 13 is provided with a cut groove 131 in the width direction.

That is, the brush body 35 is
A cut groove 131 is provided radially in the width direction of the pedestal portion 40 so that the cut groove 131 converges toward the suction port 20 when mounted on the base. The incision 131 is formed so that the incision 131 is not blocked and the width of the incision 131 can be ensured even in a state where the brush bristles are in close contact with the pedestal portion 40.

According to the configuration in which the cut groove 131 is provided, relatively large dust such as rice grains is sucked from the second cleaning body chamber 19 into the suction port 20 through the cut groove 131. When the main body 11 advances, it is possible to prevent dust from being swallowed by the front edge of the brush body 35 without being sucked from the first cleaning body chamber 18 and being caught on the brush hairs, thereby improving cleaning efficiency.

Further, since the cut grooves 131 are formed radially,
When the suction opening body 11 is running, no unsweeping is caused by the cut groove 131, dust can be scraped or swept across the entire length of the brush body 35, and the cleaning efficiency can be improved.

[0089]

According to the suction port of the vacuum cleaner according to the first aspect of the present invention, the hook that is detachable from the hook hole of the cleaning body has the hook claw projecting sideways, and the suction port communicates with the communication pipe. Because it protrudes downward on the lower surface of the case body corresponding to the communication path to be formed, even if an opening is formed due to the restriction of the mold release by forming with a simple mold structure, dust is sucked in through the communication path. Therefore, dust does not enter the case and does not accumulate, so that contamination of the case can be prevented.

According to the suction port body of the vacuum cleaner according to the second aspect, the hook hole in which the hook claw portion of the cleaning body is removably locked corresponds to the communication passage that connects the suction port to the communication pipe. Since an opening is formed in the lower surface of the case body, a structure can be formed in which the cleaning body can be easily attached and detached with a simple mold structure, and even if a hook hole communicating with the communication pipe is opened, dust is sucked in through the communication path. Since dust does not enter the case and does not accumulate, contamination of the case can be prevented.

[Brief description of the drawings]

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

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

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 bottom view showing a suction port body according to another embodiment of the suction port body of the vacuum cleaner of the present invention.

[Explanation of symbols]

 11 Suction port body 15 Case body 20 Suction port 35 Brush body as cleaning body 37 Hook claw 44 Hook hole 49 Communication passage 56 Communication pipe

Continued on the front page (72) Inventor Junji Naito 43 Horiyamashita, Hadano City, Kanagawa Prefecture Tec Hatano Plant

Claims (2)

[Claims] 1. A case body having an inlet opening on a lower surface facing a surface to be cleaned, a communication passage formed at least in a lower surface of the case body as a partition, and communicating with the suction port. A communication pipe communicating with the suction port, a hooking claw projecting downward from a lower surface of the case body where the communication passage is located, and a tip portion protruding sideways; A cleaner having a catch hole and detachably attached to a lower surface of the case body. 2. A case body having an inlet opening on a lower surface opposed to a surface to be cleaned, a communication passage formed at least in a lower surface of the case body as a partition, and communicating with the suction port; The case body having a communication pipe communicating with the suction port, a hook hole formed in the lower surface of the case body where the communication passage is located, and a hook claw protrudingly provided to be able to engage and disengage with the hook hole. And a cleaning body removably attached to the lower surface of the vacuum cleaner.