JP2020174973A - Rotary brush and dust collector - Google Patents

Abstract

To restrain a deterioration in cleaning performance.SOLUTION: A rotary brush arranged in a suction port of a dust collector comprises a rotary body, a first fiber bundle supported by the rotary body, and a second fiber bundle supported by the rotary body. The first fiber bundle and the second fiber bundle are arranged at an interval in a circumferential direction of the rotary body. Fibers of the first fiber bundle are thicker than fibers of the second fiber bundle.SELECTED DRAWING: Figure 3

Description

The present invention relates to a rotary brush and a dust collector.

The dust collector includes a suction port and a rotating brush arranged at the suction port. The rotating brush captures foreign matter present on the surface to be cleaned. The rotary brush disclosed in Patent Document 1 has a first pile row formed of a soft first pile yarn and a second pile row formed of a hard second pile yarn. The first pile row and the second pile row extend adjacent to each other in parallel and are arranged in one groove (concave). Pile yarn is a type of fiber used in rotating brushes.

Japanese Unexamined Patent Publication No. 2003-052584

When two types of fibers having different hardness are arranged in one groove as in the rotary brush disclosed in Patent Document 1, the density of the fibers becomes high. When hair-like foreign matter such as hair or thread is present on the surface to be cleaned, if the fiber density is high, the hair-like foreign matter cannot enter between the fibers. If the hair-like foreign matter cannot get between the fibers, it becomes difficult for the rotating brush to catch the hair-like foreign matter. The end of the rotating brush is rotatably supported by the support device. Hairy debris that is not captured by the rotating brush can move to the edges of the rotating brush and enter the boundary between the rotating brush and the support device. When hair-like foreign matter enters the boundary between the rotating brush and the support device, the rotation of the rotating brush is hindered and the cleaning performance of the dust collector is deteriorated. Further, when the hair-like foreign matter enters the boundary between the rotating brush and the support device, it becomes necessary to carry out maintenance work for removing the hair-like foreign matter. Frequent entry of hairy debris into the boundary between the rotating brush and the support device results in frequent maintenance work. On the other hand, if the fiber density is too low, the performance of capturing foreign matter by the rotating brush and the performance of wiping the surface to be cleaned deteriorate, and the cleaning performance of the dust collector deteriorates.

The dust collector also cleans surfaces to be cleaned in different surface conditions, such as floors or carpet surfaces. When the rotating brush is composed of one type of fiber, it becomes difficult for the rotating brush to capture foreign matter existing on each of the cleaning target surfaces having different surface conditions. As a result, the cleaning performance of the dust collector deteriorates.

An aspect of the present invention is to suppress deterioration of cleaning performance.

According to the aspect of the present invention, the rotating brush is arranged at the suction port of the dust collector, and is a rotating body, a first fiber bundle supported by the rotating body, and a second rotating brush supported by the rotating body. The first fiber bundle and the second fiber bundle are arranged at intervals in the circumferential direction of the rotating body, and the fibers of the first fiber bundle are of the second fiber bundle. Rotating brushes are provided that are characterized by being thicker than fibers.

According to the aspect of the present invention, deterioration of cleaning performance can be suppressed.

FIG. 1 is a perspective view showing a dust collector according to an embodiment. FIG. 2 is a bottom view showing a dust collector according to the embodiment. FIG. 3 is a bottom view showing a part of the dust collector in which the vicinity of the suction port according to the embodiment is enlarged. FIG. 4 is a cross-sectional view showing a part of a dust collector in which the vicinity of the suction port according to the embodiment is enlarged. FIG. 5 is a perspective view showing the first fiber bundle according to the embodiment. FIG. 6 is a perspective view showing the second fiber bundle according to the embodiment. FIG. 7 is a perspective view of the rotating brush according to the embodiment as viewed from diagonally above to the right. FIG. 8 is a perspective view of the rotating brush according to the embodiment as viewed from diagonally above left. FIG. 9 is a cross-sectional view showing a rotating brush according to the embodiment. FIG. 10 is an exploded perspective view showing the first connecting mechanism and the first support device according to the embodiment. FIG. 11 is a cross-sectional view showing the first connecting mechanism and the first supporting device according to the embodiment. FIG. 12 is a cross-sectional view showing a second connecting mechanism and a second supporting device according to the embodiment. FIG. 13 is an exploded perspective view showing a part of the second support device according to the embodiment. FIG. 14 is a diagram for explaining the operation of the rotating brush according to the embodiment. FIG. 15 is a diagram for explaining the operation of the rotating brush according to the embodiment. FIG. 16 is a schematic view showing a state in which a hair-like foreign substance is in contact with the second fiber bundle according to the embodiment. FIG. 17 is a schematic view showing a state in which a hair-like foreign substance is captured by the first fiber bundle according to the embodiment. FIG. 18 is a diagram showing the vicinity of the left end portion of the suction port according to the embodiment.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings, but the present invention is not limited thereto. The components of the embodiments described below can be combined as appropriate. In addition, some components may not be used.

In the embodiment, the positional relationship of each part will be described using the terms “left”, “right”, “front”, “rear”, “top”, and “bottom”. These terms refer to a relative position or orientation with respect to the center of the dust collector.

[Dust collector]
FIG. 1 is a perspective view showing a dust collector 1 according to an embodiment. FIG. 2 is a bottom view showing the dust collector 1 according to the embodiment.

The dust collector 1 is a robot dust collector that collects foreign matter existing on the cleaning target surface FL while autonomously traveling on the cleaning target surface FL. Dust or dust is exemplified as a foreign substance existing on the surface FL to be cleaned. Further, as the foreign matter existing on the surface FL to be cleaned, a hair-like foreign matter such as hair or thread is exemplified.

As shown in FIGS. 1 and 2, the dust collector 1 includes a housing 2, a bumper 3, a battery mounting portion 4, a caster 5, a roller 6, a wheel 7, a side brush 8, and an interface device 9. And a rotating brush 10.

The housing 2 has an internal space. The housing 2 has an upper surface 2A, a bottom surface 2B facing the cleaning target surface FL, and a side surface 2C connecting the peripheral edge portion of the upper surface 2A and the peripheral edge portion of the bottom surface 2B. In a plane parallel to the upper surface 2A, the outer shape of the housing 2 is substantially circular.

The housing 2 includes an upper housing 21, a lower housing 22 arranged below the upper housing 21, a cover plate 23 that is openably and closably attached to the upper housing 21, and a bottom plate 24 that is attached to the lower housing 22. including. The lower housing 22 is connected to the upper housing 21. The upper surface 2A is arranged on the upper housing 21 and the cover plate 23. The bottom surface 2B is arranged on the lower housing 22 and the bottom plate 24.

The bumper 3 is movable so as to face at least a part of the side surface 2C. The bumper 3 is movably supported by the housing 2. The bumper 3 faces the front portion of the side surface 2C. When the bumper 3 collides with an object existing around the dust collector 1, the bumper 3 moves with respect to the housing 2 to alleviate the impact acting on the housing 2.

The battery mounting portion 4 supports the battery BT. The battery BT is mounted on the battery mounting portion 4. The battery mounting portion 4 is provided on at least a part of the outer surface of the housing 2. A recess is provided at the rear of the upper housing 21. The battery mounting portion 4 is provided inside the recess of the upper housing 21. Two battery mounting portions 4 are provided.

The battery BT supplies electric power to the electric device or the electronic device mounted on the dust collector 1 in a state of being mounted on the battery mounting unit 4. The battery BT is a general-purpose battery that can be used as a power source for various electric devices. The battery BT can be used as a power source for power tools. The battery BT can be used as a power source for electric devices other than power tools. The battery BT can be used as a power source for a dust collector different from the dust collector 1 according to the present embodiment. The battery BT includes a lithium ion battery. The battery BT is a rechargeable battery that can be recharged. The battery mounting portion 4 has a structure equivalent to that of the battery mounting portion of the power tool.

The user of the dust collector 1 can carry out the work of mounting the battery BT on the battery mounting unit 4 and the work of removing the battery BT from the battery mounting unit 4. The battery mounting unit 4 has a guide member for guiding the battery BT and a main body terminal connected to the battery terminal of the battery BT. The user can mount the battery BT in the battery mounting portion 4 by inserting the battery BT into the battery mounting portion 4 from above. The battery BT is inserted into the battery mounting portion 4 while being guided by the guide member. When the battery BT is mounted on the battery mounting portion 4, the battery terminal of the battery BT and the main body terminal of the battery mounting portion 4 are electrically connected. The user of the dust collector 1 can remove the battery BT from the battery mounting portion 4 by moving the battery BT upward.

Each of the caster 5 and the roller 6 movably supports the housing 2. Each of the caster 5 and the roller 6 is rotatably supported by the housing 2. Two casters 5 are provided at the rear of the bottom surface 2B. One caster 5 is provided on the left side of the housing 2. The other caster 5 is provided on the right side of the housing 2. One roller 6 is provided at the front portion of the bottom surface 2B.

The wheels 7 movably support the housing 2. The wheel 7 rotates about the rotation axis AX. The rotation axis AX extends in the left-right direction. Two wheels 7 are provided. One wheel 7 is provided on the left side of the housing 2. The other wheel 7 is provided on the right side of the housing 2.

The wheels 7 are connected to the wheel motor 7D. The wheel motor 7D generates power to rotate the wheels 7. The wheel motor 7D is driven by the electric power supplied from the battery BT. The wheel motor 7D is arranged in the internal space of the housing 2. The wheels 7 are rotated by the drive of the wheel motor 7D. As the wheels 7 rotate, the dust collector 1 autonomously travels.

At least a part of the wheel 7 projects downward from the bottom surface 2B. The wheel 7 supports the housing 2 so that the bottom surface 2B and the cleaning target surface FL face each other with a gap.

The housing 2 has a suction port 20 on the bottom surface 2B. The suction port 20 is provided on the bottom plate 24. The suction port 20 sucks in foreign matter existing on the surface FL to be cleaned. The suction port 20 faces the cleaning target surface FL. The suction port 20 is provided at the front portion of the bottom surface 2B. The suction port 20 has a rectangular shape that is long in the left-right direction.

A suction motor 25 and a suction fan 26 are arranged in the internal space of the housing 2. The suction motor 25 generates power to rotate the suction fan 26. The suction motor 25 is driven by the electric power supplied from the battery BT. A suction force is generated at the suction port 20 by driving the suction motor 25 and rotating the suction fan 26. Due to the suction force generated in the suction port 20, foreign matter existing on the surface FL to be cleaned is sucked into the suction port 20.

The side brush 8 is arranged at the front portion of the bottom surface 2B. The side brush 8 faces the cleaning target surface FL. At least a part of the side brush 8 is arranged in front of the housing 2. Two side brushes 8 are provided. One side brush 8 is provided on the left side of the suction port 20. The other side brush 8 is provided on the right side of the suction port 20. The side brush 8 has a disk member 8A and a plurality of brushes 8B radially connected to the disk member 8A. The disk member 8A is rotatably supported by the housing 2. The disk member 8A is supported by the housing 2 so that at least a part of the brush 8B projects outward from the side surface 2C. Further, the disk member 8A is supported by the housing 2 so that at least a part of the brush 8B overlaps the suction port 20. With the wheels 7 installed on the surface FL to be cleaned, at least a part of the side brush 8 comes into contact with the surface FL to be cleaned.

The side brush 8 is connected to the side brush motor 8D. The side brush motor 8D generates power to rotate the side brush 8. The side brush motor 8D is driven by the electric power supplied from the battery BT. The side brush motor 8D is arranged in the internal space of the housing 2. The side brush 8 is rotated by driving the side brush motor 8D. As the side brush 8 rotates, foreign matter existing on the cleaning target surface FL around the housing 2 moves to the suction port 20.

The interface device 9 is arranged at the rear of the cover plate 23. The interface device 9 has a plurality of operation units 9A and a plurality of display units 9B operated by the user of the dust collector 1. A power button is exemplified as the operation unit 9A. As the display unit 9B, a remaining amount display unit of the battery BT is exemplified. Further, a light emitting portion 9C including, for example, a light emitting diode is provided in the front portion of the upper housing 21.

[Rotating brush]
FIG. 3 is a bottom view showing a part of the dust collector 1 in which the vicinity of the suction port 20 according to the embodiment is enlarged. FIG. 4 is a cross-sectional view showing a part of the dust collector 1 in which the vicinity of the suction port 20 according to the embodiment is enlarged.

As shown in FIGS. 2, 3 and 4, the rotary brush 10 is arranged at the suction port 20. The rotary brush 10 faces the cleaning target surface FL. The rotating brush 10 is long in the left-right direction. The rotary brush 10 rotates about the rotation axis RX.

The rotating brush 10 includes a rotating body 13, a first fiber bundle 11 supported by the rotating body 13, and a second fiber bundle 12 supported by the rotating body 13. A fiber bundle is an aggregate of a plurality of bundled fibers. In an embodiment, the fiber bundle has a base material and a plurality of fibers held on the base material in a bundled state. The fiber bundle is long in the left-right direction.

The rotating body 13 is a rod-shaped member that is long in the left-right direction. It rotates around the rotation axis RX. The rotation axis RX extends in the left-right direction. In the following description, the direction parallel to the rotating shaft RX is appropriately referred to as the axial direction of the rotating body 13, and the direction around the rotating shaft RX is appropriately referred to as the circumferential direction of the rotating body 13. In the embodiment, the axial direction and the left-right direction coincide with each other.

The first fiber bundle 11 and the second fiber bundle 12 are arranged at intervals in the circumferential direction of the rotating body 13. The first fiber bundle 11 and the second fiber bundle 12 are alternately arranged in the circumferential direction.

The first connecting mechanism 30 is provided at the right end of the rotating body 13. A second connecting mechanism 40 is provided at the left end of the rotating body 13. The right end portion of the rotating body 13 is rotatably supported by the first support device 50. The first connecting mechanism 30 is supported by the first support device 50. The first support device 50 supports the right end portion of the rotating body 13 via the first connecting mechanism 30. The left end portion of the rotating body 13 is rotatably supported by the second support device 60. The second connecting mechanism 40 is supported by the second support device 60. The second support device 60 supports the left end portion of the rotating body 13 via the second connecting mechanism 40. Each of the first support device 50 and the second support device 60 is arranged in the internal space of the housing 2.

The second support device 60 has a rotary brush motor 64. The rotary brush motor 64 generates power to rotate the rotary brush 10. The rotary brush motor 64 is driven by the electric power supplied from the battery BT. The rotary brush 10 is rotated by driving the rotary brush motor 64. As the rotary brush 10 rotates, foreign matter existing on the surface FL to be cleaned is scraped up and sucked from the suction port 20.

FIG. 5 is a perspective view showing the first fiber bundle 11 according to the embodiment. FIG. 6 is a perspective view showing the second fiber bundle 12 according to the embodiment.

As shown in FIG. 5, the first fiber bundle 11 has a base material 14 and a plurality of fibers 15 held by the base material 14.

The base material 14 is a plate-shaped member that is long in the left-right direction. The base material 14 is made of synthetic resin. The base material 14 may be made of cloth or metal. A plurality of openings 14A are provided on the surface of the base material 14. A plurality of openings 14A are provided at intervals in the left-right direction.

A plurality of fibers 15 are provided in the left-right direction. The base end of the fiber 15 is located inside the opening 14A. The base end of the fiber 15 is fixed inside the opening 14A. A plurality of fibers 15 are arranged in the opening 14A in a bundled state.

The fiber 15 of the first fiber bundle 11 is a synthetic resin fiber. The fiber 15 may be made of nylon or polypropylene. The fiber 15 may be a metal fiber.

As shown in FIG. 6, the second fiber bundle 12 has a base material 16 and a plurality of fibers 17 held by the base material 16.

The base material 16 includes a first sheet 16A and a second sheet 16B which are long in the left-right direction. The base material 16 is made of synthetic resin. The base material 16 may be made of cloth or metal.

A plurality of fibers 17 are provided in the left-right direction. The base end portion of the fiber 17 is arranged between the first sheet 16A and the second sheet 16B. The base end portion of the fiber 17 is fixed by being sandwiched between the first sheet 16A and the second sheet 16B. A plurality of fibers 17 are arranged between the first sheet 16A and the second sheet 16B in a bundled state.

The fiber 17 of the second fiber bundle 12 is a synthetic resin fiber. The fiber 17 may be made of nylon or polypropylene. The fiber 17 may be a metal fiber.

In the embodiment, the fiber 15 of the first fiber bundle 11 and the fiber 17 of the second fiber bundle 12 are made of the same material. The fibers 15 of the first fiber bundle 11 and the fibers 17 of the second fiber bundle 12 are synthetic resin fibers. In the embodiment, the fiber 15 of the first fiber bundle 11 and the fiber 17 of the second fiber bundle 12 are nylon fibers.

The fiber 15 of the first fiber bundle 11 is thicker than the fiber 17 of the second fiber bundle 12. The diameter of the fiber 15 of the first fiber bundle 11 is 15 times or more and 30 times or less the diameter of the fiber 17 of the second fiber bundle 12.

In the embodiment, the diameter of the fiber 15 of the first fiber bundle 11 is 0.15 mm or more and 0.30 mm or less. The diameter of the fiber 17 of the second fiber bundle 12 is 0.005 mm or more and 0.2 mm or less. The diameter of the fiber 17 of the second fiber bundle 12 is preferably 0.01 mm or less. That is, the diameter of the fiber 17 of the second fiber bundle 12 is preferably 0.005 mm or more and 0.01 mm or less.

Further, the single fiber fineness of the first fiber bundle 11 is preferably 215 dtex or more and 870 dtex or less. The single fiber fineness of the second fiber bundle 12 is preferably 1 dtex or more and 50 dtex or less.

The fiber 15 of the first fiber bundle 11 is harder than the fiber 17 of the second fiber bundle 12. Each of the fiber 15 of the first fiber bundle 11 and the fiber 17 of the second fiber bundle 12 can be bent by the action of an external force. The fibers 15 of the first fiber bundle 11 are less likely to bend than the fibers 17 of the second fiber bundle 12.

The density of the fibers 15 of the first fiber bundle 11 is lower than the density of the fibers 17 of the second fiber bundle 12. The distance between the adjacent fibers 15 in the first fiber bundle 11 is larger than the distance between the adjacent fibers 17 in the second fiber bundle 12.

The fiber density refers to the ratio of fibers in the space per unit volume around the rotating body 13. The fibers 15 of the first fiber bundle 11 are sparsely arranged in the space around the rotating body 13. The fibers 17 of the second fiber bundle 12 are densely arranged in the space around the rotating body 13.

FIG. 7 is a perspective view of the rotating brush 10 according to the embodiment as viewed from diagonally above to the right. FIG. 8 is a perspective view of the rotary brush 10 according to the embodiment as viewed from diagonally above left. FIG. 9 is a cross-sectional view showing the rotating brush 10 according to the embodiment.

As shown in FIGS. 7, 8 and 9, each of the first fiber bundle 11 and the second fiber bundle 12 is supported by the rotating body 13. The first fiber bundle 11 and the second fiber bundle 12 are arranged at intervals in the circumferential direction. The first fiber bundle 11 and the second fiber bundle 12 are adjacent to each other in the circumferential direction. In the embodiment, two first fiber bundles 11 are provided. Two second fiber bundles 12 are provided. The first fiber bundle 11 and the second fiber bundle 12 are alternately arranged in the circumferential direction.

The rotating body 13 has a plurality of grooves 70 provided at intervals in the circumferential direction. By arranging the base end portion of the first fiber bundle 11 including the base material 14 in the groove 70, the first fiber bundle 11 is supported by the rotating body 13. The second fiber bundle 12 is supported by the rotating body 13 by arranging the base end portion of the second fiber bundle 12 including the base material 16 in the groove 70. The first fiber bundle 11 and the second fiber bundle 12 are supported by different grooves 70.

In the following description, the groove 70 in which the first fiber bundle 11 is arranged is appropriately referred to as the first groove 71, and the groove 70 in which the second fiber bundle 12 is arranged is appropriately referred to as the second groove 72. The first groove 71 supports the first fiber bundle 11. The second groove 72 supports the second fiber bundle 12.

The first groove 71 and the second groove 72 are adjacent to each other in the circumferential direction. Two first grooves 71 are provided. Two second grooves 72 are provided. The first groove 71 and the second groove 72 are alternately arranged in the circumferential direction.

The first groove 71 in which the first fiber bundle 11 is arranged and the second groove 72 in which the second fiber bundle 12 is arranged are provided at equal intervals in the circumferential direction.

The groove 70 extends in the left-right direction. As shown in FIGS. 7 and 8, the left end 70L and the right end 70R of the groove 70 are arranged at the same position in the circumferential direction. The left end 70L of the groove 70 means one end of the groove 70 in the axial direction. The right end 70R of the groove 70 means the other end of the groove 70 in the axial direction. The central portion 70C of the groove 70 in the axial direction is arranged at a position different from that of the left end portion 70L and the right end portion 70R in the circumferential direction. That is, the groove 70 is formed in the shape of the alphabet "V".

By arranging a part of the first fiber bundle 11 in the first groove 71, the first fiber bundle 11 is bent in a "V" shape. By arranging a part of the second fiber bundle 12 in the second groove 72, the second fiber bundle 12 is bent in a “V” shape.

In cleaning the surface FL to be cleaned, the rotating body 13 rotates in a specified rotation direction. As shown in FIGS. 7 and 8, the rotating body 13 rotates in the rotation direction RC indicated by the arrow. The central portion 70C of the groove 70 is arranged behind the left end portion 70L and the right end portion 70R in the rotational direction. That is, when the rotating body 13 rotates in the specified rotation direction RC, the left end portion and the right end portion of the first fiber bundle 11 come into contact with the cleaning target surface FL before the central portion of the first fiber bundle 11. When the rotating body 13 rotates in the specified rotation direction RC, the left end portion and the right end portion of the second fiber bundle 12 come into contact with the cleaning target surface FL before the central portion of the second fiber bundle 12.

As shown in FIG. 9, the rotating body 13 has a plurality of rib portions 13C extending in the radial direction of the rotating shaft RX. In the embodiment, four rib portions 13C are provided. In the following description, the tip end portion of the rib portion 13C is appropriately referred to as a convex portion 13D.

The convex portion 13D extends in the left-right direction. The groove 70 is provided in the convex portion 13D.

As shown in FIG. 9, the groove 70 has an opening 73 and an internal space 74 connected to the opening 73. In the circumferential direction, the size of the opening 73 is smaller than the size of the internal space 74.

The base end portion of the first fiber bundle 11 including the base material 14 is arranged in the first groove 71. The base material 14 is arranged in the internal space 74 of the first groove 71. At least a portion of the fiber 15 is arranged in the opening 73 of the first groove 71. The fiber 15 extends from the first groove 71 outward in the radial direction of the rotation axis RX. The intermediate portion and the tip portion of the fiber 15 are arranged outside the first groove 71.

The left end and the right end of the first groove 71 are open. The base material 14 is inserted into the internal space 74 from the left end or the right end of the first groove 71. The base material 14 is arranged in the internal space 74 of the first groove 71, and at least a part of the fibers 15 is arranged in the opening 73 of the first groove 71, so that the first fiber bundle 11 is supported by the rotating body 13. To. In the circumferential direction, the size of the base material 14 is larger than the size of the opening 73. Therefore, the base material 14 arranged in the internal space 74 is prevented from coming out of the opening 73.

The base end portion of the second fiber bundle 12 including the base material 16 is arranged in the second groove 72. The base material 16 is arranged in the internal space 74 of the second groove 72. At least a part of the fiber 17 is arranged in the opening 73 of the second groove 72. The fiber 17 extends from the second groove 72 to the outside in the radial direction of the rotation axis RX. The middle portion and the tip portion of the fiber 17 are arranged outside the second groove 72.

The left end and the right end of the second groove 72 are open. The base material 16 is inserted into the internal space 74 from the left end or the right end of the second groove 72. The second fiber bundle 12 is supported by the rotating body 13 by arranging the base material 16 in the internal space 74 of the second groove 72 and arranging at least a part of the fibers 17 in the opening 73 of the second groove 72. To. In the circumferential direction, the size of the base material 16 is larger than the size of the opening 73. Therefore, the base material 16 arranged in the internal space 74 is prevented from coming out of the opening 73.

The height H1 of the first fiber bundle 11 is lower than the height H2 of the second fiber bundle 12. The height H1 of the first fiber bundle 11 refers to the distance between the rotation axis RX in the radial direction of the rotation axis RX and the tip of the fiber 15 of the first fiber bundle 11. The height H2 of the second fiber bundle 12 refers to the distance between the rotation axis RX in the radial direction of the rotation axis RX and the tip of the fiber 17 of the second fiber bundle 12.

[1st connecting mechanism and 1st support device]
FIG. 10 is an exploded perspective view showing the first connecting mechanism 30 and the first support device 50 according to the embodiment. FIG. 11 is a cross-sectional view showing the first connecting mechanism 30 and the first support device 50 according to the embodiment. As shown in FIGS. 4, 7, 10, and 11, the first connecting mechanism 30 is mounted on the right end of the rotating body 13. The first support device 50 supports the right end portion of the rotating body 13 via the first connecting mechanism 30.

The first connecting mechanism 30 has a cap member 31 mounted on the rotating body 13, a pin member 32 held by the cap member 31, and a bearing 33 that rotatably supports the pin member 32.

The cap member 31 has a first holding portion 31A for holding the rotating body 13, a second holding portion 31B for holding the pin member 32, and a wall portion 31C arranged around the second holding portion 31B.

The first holding portion 31A has a tubular shape. The first holding portion 31A is arranged around the right end portion of the rotating body 13. The right end portion of the rotating body 13 is inserted inside the first holding portion 31A. By inserting the rotating body 13 into the first holding portion 31A, the rotating body 13 is held by the first holding portion 31A, and the cap member 31 and the rotating body 13 are fixed.

The second holding portion 31B projects to the right from the right end surface of the rotating body 13. The second holding portion 31B has a tubular shape. The second holding portion 31B is arranged around the pin member 32. The pin member 32 is arranged inside the second holding portion 31B. By arranging the pin member 32 inside the second holding portion 31B, the pin member 32 is held by the second holding portion 31B, and the cap member 31 and the pin member 32 are fixed.

The pin member 32 includes a rotation shaft RX. The right end portion of the pin member 32 projects to the right from the second holding portion 31B. The bearing 33 rotatably supports a part of the pin member 32 protruding to the right from the second holding portion 31B. The right end of the pin member 32 projects to the right from the bearing 33.

The first support device 50 has a holder member 51 that holds the first connecting mechanism 30. The holder member 51 holds at least the bearing 33. The holder member 51 is attached to the first connecting mechanism 30. The holder member 51 is removable from the first connecting mechanism 30. The holder member 51 is detachable from at least the bearing 33.

The holder member 51 has a surrounding portion 51A arranged around the right end portion of the pin member 32, a support portion 51B arranged around the bearing 33, and a flange portion 51C arranged around the support portion 51B. ..

The surrounding portion 51A has an opening 51Aa in which the right end portion of the pin member 32 is arranged. An elastic deformation portion 51Ab is arranged around the opening 51Aa. The elastically deformed portion 51Ab has a convex portion 51Ac protruding toward the center of the opening 51Aa. The opening 51Aa is defined by the elastically deformed portion 51Ab.

The support portion 51B supports the bearing 33. As shown in FIG. 4, the first support device 50 has a support member 52 provided inside the housing 2. The holder member 51 is supported by the support member 52. The pin member 32 rotates about the rotation shaft RX while being supported by the bearing 33. The pin member 32, the cap member 31, and the rotating body 13 rotate together about the rotation axis RX.

The elastically deformed portion 51Ab prevents the holder member 51 from slipping out of the pin member 32. When the holder member 51 is removed from the support member 52 together with the rotating brush 10, the holder member 51 may come off from the pin member 32. As shown in FIG. 11, the elastically deformed portion 51Ab is arranged to the left of the right end portion of the pin member 32. It is possible to prevent the holder member 51 from coming out due to contact between the pin member 32 and the convex portion 51Ac of the elastically deformed portion 51Ab before the holder member 51 comes out from the pin member 32 in the right direction. Further, even if the pin member 32 moves in the axial direction, the elastically deformed portion 51Ab is elastically deformed in accordance with the movement of the pin member 32, so that excessive stress is suppressed from acting on the pin member 32.

The holder member 51 is removable from the cap member 31 and the bearing 33. By inserting the flange portion 51C of the holder member 51 inside the wall portion 31C of the cap member 31, the holder member 51 is attached to the cap member 31 and the bearing 33.

[Second coupling mechanism and second support device]
FIG. 12 is a cross-sectional view showing the second connecting mechanism 40 and the second support device 60 according to the embodiment. FIG. 13 is an exploded perspective view showing a part of the second support device 60 according to the embodiment. As shown in FIGS. 4, 8, 12, and 13, the second connecting mechanism 40 is mounted on the left end of the rotating body 13. The second support device 60 supports the left end portion of the rotating body 13 via the second connecting mechanism 40.

The second connecting mechanism 40 has a cap member 41 mounted on the rotating body 13. The cap member 41 has a holding portion 41A for holding the rotating body 13, a convex portion 41B protruding to the left from the holding portion 41A, and a plurality of protruding portions 41C provided on the left end surface of the convex portion 41B.

The holding portion 41A has a tubular shape. The holding portion 41A is arranged around the left end portion of the rotating body 13. The left end portion of the rotating body 13 is inserted inside the holding portion 41A. By inserting the rotating body 13 into the holding portion 41A, the rotating body 13 is held by the holding portion 41A, and the cap member 41 and the rotating body 13 are fixed.

The convex portion 41B projects to the left from the left end surface of the rotating body 13. The outer diameter of the convex portion 41B is smaller than the outer diameter of the holding portion 41A.

The protrusion 41C protrudes to the left from the left end surface of the protrusion 41B. A plurality of protrusions 41C are provided on the left end surface of the protrusions 41B. A plurality of protrusions 41C are arranged around the rotation shaft RX.

As shown in FIGS. 12 and 13, the second support device 60 includes a connecting member 61 connected to the second connecting mechanism 40, a rotating member 62 connected to the connecting member 61 by a screw 63, and a power transmission mechanism 65. It has a rotary brush motor 64 which is connected to the rotary member 62 via. The connecting member 61 is connected to the second connecting mechanism 40. The connecting member 61 is removable from the second connecting mechanism 40. The connecting member 61 is connected to the cap member 41. The connecting member 61 is fixed to the rotating member 62 by a screw 63. The connecting member 61 can be separated from the rotating member 62 by releasing the fixing by the screw 63. The outer shape of the connecting member 61 is circular.

As shown in FIGS. 12 and 13, the connecting member 61 includes a base plate 61A, an opening 61B provided at the center of the base plate 61A, and a plurality of protrusions 61C provided on the right end surface of the base plate 61A. It has a wall portion 61D provided on the peripheral edge portion of the base plate 61A and a recess 61E into which the rotating member 62 is inserted.

The base plate 61A has a disk shape. The opening 61B is provided in the central portion of the base plate 61A. The screw 63 is inserted into the opening 61B.

The protrusion 61C projects to the right from the right end surface of the base plate 61A. A plurality of protrusions 61C are provided on the right end surface of the base plate 61A. A plurality of protrusions 61C are arranged around the rotation shaft RX.

The wall portion 61D projects to the right from the peripheral edge portion of the base plate 61A. The wall portion 61D is provided so as to surround the rotation axis RX. The recess 61E is provided on the left side of the base plate 61A. The rotating member 62 is inserted inside the recess 61E.

The rotating member 62 is a rod-shaped member that is long in the left-right direction. The rotating member 62 is rotatably supported by the bearing 66 and the bearing 67. As shown in FIGS. 4 and 12, the second support device 60 has a support member 68 provided inside the housing 2. The bearing 66 and the bearing 67 are supported by the support member 68.

A screw hole 62A is provided on the right end surface of the rotating member 62. The right end of the rotating member 62 is inserted into the recess 61E. The opening 61B and the screw hole 62A coincide with each other in a state where the rotating member 62 is inserted into the recess 61E.

With the rotating member 62 inserted into the recess 61E, the screw 63 is inserted into the screw hole 62A through the opening 61B, and the screw thread of the screw 63 and the screw groove of the screw hole 62A are combined to form a connecting member. The 61 and the rotating member 62 are fixed. The connecting member 61 can be separated from the rotating member 62 by releasing the fixing by the screw 63.

The connecting member 61 is removable from the cap member 41. The protrusion 41C of the cap member 41 is inserted between the adjacent protrusions 61C. The protrusion 61C of the connecting member 61 is inserted between the adjacent protrusions 41C. The protrusion 41C and the protrusion 61C mesh with each other. The connecting member 61 is connected to the cap member 41 by engaging the protrusion 41C and the protrusion 61C. When the connecting member 61 rotates in a state where the protrusion 41C and the protrusion 61C are in mesh with each other, the rotating body 13 rotates together with the connecting member 61.

The rotary brush motor 64 generates power to rotate the rotating body 13. The power generated by the rotary brush motor 64 is transmitted to the rotary member 62 via the power transmission mechanism 65. The power transmission mechanism 65 includes a plurality of gears. The power generated by the rotary brush motor 64 is transmitted to the rotary member 62, so that the rotary member 62 rotates. The rotating member 62 and the connecting member 61 are fixed by the screw 63, and the rotating member 62 rotates in a state where the protrusion 41C and the protrusion 61C are in mesh with each other, so that the rotating body 13 rotates about the rotation axis RX. To do.

[motion]
Next, the operation of the rotating brush 10 will be described. 14 and 15 are diagrams for explaining the operation of the rotary brush 10 according to the embodiment. As described above, at least a part of the wheel 7 projects downward from the bottom surface 2B. In addition, in FIGS. 14 and 15, the illustration of the wheel 7 is omitted. The wheel 7 supports the housing 2 so that the bottom surface 2B and the cleaning target surface FL face each other with a gap. The wheel 7 keeps the distance G between the bottom surface 2B and the cleaning target surface FL at a substantially constant value.

As described with reference to FIG. 9, the height H1 of the first fiber bundle 11 is lower than the height H2 of the second fiber bundle 12. Further, the fibers 15 of the first fiber bundle 11 are thick and difficult to bend. Therefore, as shown in FIG. 14, even if the fibers 15 of the first fiber bundle 11 come into contact with the surface FL to be cleaned, the bending of the fibers 15 is suppressed. As a result, an increase in the rotational resistance of the rotating brush 10 is suppressed. The first fiber bundle 11 can scrape up foreign matter existing on the surface FL to be cleaned. Even if the surface FL to be cleaned is a carpet surface, the first fiber bundle 11 can sufficiently scrape up foreign substances existing on the surface FL to be cleaned. Further, even if hair-like foreign matter such as hair or thread is present on the surface FL to be cleaned, the first fiber bundle 11 can sufficiently scrape up the hair-like foreign matter.

As shown in FIG. 15, when the fibers 17 of the second fiber bundle 12 come into contact with the surface FL to be cleaned, the fibers 17 are sufficiently bent. As a result, the second fiber bundle 12 can be cleaned so as to wipe off the surface FL to be cleaned. When the surface FL to be cleaned is the floor surface, the second fiber bundle 12 can sufficiently wipe off foreign substances existing on the surface FL to be cleaned. Even if minute foreign matter is present on the surface FL to be cleaned, the second fiber bundle 12 can sufficiently wipe off the minute foreign matter.

The density of the fibers 17 of the second fiber bundle 12 is higher than the density of the fibers 15 of the first fiber bundle 11. When a hair-like foreign substance such as hair or thread is present on the surface FL to be cleaned, the hair-like foreign substance cannot enter between the fibers 17 of the second fiber bundle 12.

FIG. 16 is a schematic view showing a state in which a hair-like foreign substance is in contact with the second fiber bundle 12 according to the embodiment. When a hair-like foreign substance such as hair or thread is present on the surface FL to be cleaned, the hair-like foreign substance comes into contact with the second fiber bundle 12 as shown in FIG. The fibers 17 of the second fiber bundle 12 are thin, and the density of the fibers 17 is high. Therefore, the hair-like foreign matter cannot enter between the fibers 17. If the hair-like foreign matter cannot enter between the fibers 17, it becomes difficult for the second fiber bundle 12 to capture the hair-like foreign matter. The hair-like foreign matter not captured by the second fiber bundle 12 is likely to move to the right end or the left end of the second fiber bundle 12. The hair-like foreign matter that has moved to the right end of the second fiber bundle 12 may enter the boundary between the first connecting mechanism 30 and the first support device 50. The hair-like foreign matter may be wrapped around the cap member 31 of the first connecting mechanism 30, or entangled with the holder member 51, for example. Further, the hair-like foreign matter that has moved to the left end of the second fiber bundle 12 may enter the boundary between the second connecting mechanism 40 and the second support device 60. The hair-like foreign matter may be wrapped around the cap member 41 of the second connecting mechanism 40 or entangled with the connecting member 61, for example. As a result, the rotation of the rotating brush 10 may be hindered.

FIG. 17 is a schematic view showing a state in which a hair-like foreign substance is captured by the first fiber bundle 11 according to the embodiment. The fiber 15 of the first fiber bundle 11 is thicker and harder than the fiber 17 of the second fiber bundle 12. Further, the density of the fibers 15 of the first fiber bundle 11 is lower than the density of the fibers 17 of the second fiber bundle 12. The first fiber bundle 11 is adjacent to the second fiber bundle 12 in the circumferential direction. Therefore, the hair-like foreign matter can easily enter between the fibers 15 of the first fiber bundle 11 without being captured by the second fiber bundle 12. The first fiber bundle 11 can capture hair-like foreign substances. Therefore, the movement of the hair-like foreign matter to the right end portion or the left end portion of the rotating brush 10 is suppressed.

FIG. 18 is a diagram showing the vicinity of the left end portion of the suction port 20 according to the embodiment. As shown in FIG. 18, the second fiber bundle 12 is supported by the second groove 72 so that the left end portion of the second fiber bundle 12 contacts the inner edge portion 20L on the left side of the suction port 20. The first fiber bundle 11 is supported by the first groove 71 so that the left end portion of the first fiber bundle 11 is separated from the inner edge portion 20L on the left side of the suction port 20. Similarly, although not shown, the second fiber bundle 12 is supported by the second groove 72 so that the right end portion of the second fiber bundle 12 contacts the inner edge portion on the right side of the suction port 20. The first fiber bundle 11 is supported by the first groove 71 so that the right end portion of the first fiber bundle 11 is separated from the right inner edge portion of the suction port 20.

That is, both ends of the second fiber bundle 12 in the axial direction come into contact with the inner edges of the suction port 20 in the axial direction, and both ends of the first fiber bundle 11 in the axial direction are the inner edges of the suction port 20 in the axial direction. Away from.

The boundary between the cap member 41 and the second support device 60 is arranged in the internal space of the housing 2. That is, the boundary between the cap member 41 and the second support device 60 does not face the suction port 20. The rotating brush 10 rotates so that the left end portion of the second fiber bundle 12 comes into contact with the inner edge portion 20L on the left side of the suction port 20, so that the hair-like foreign matter comes to the boundary between the cap member 41 and the second support device 60. Intrusion is suppressed. Similarly, the boundary between the cap member 31 and the first support device 50 is arranged in the internal space of the housing 2 and does not face the suction port 20. The rotating brush 10 rotates so that the right end of the second fiber bundle 12 contacts the inner edge on the right side of the suction port 20, so that the hair-like foreign matter enters the boundary between the cap member 31 and the first support device 50. Is suppressed.

Both ends of the first fiber bundle 11 in the axial direction are separated from the inner edge portion of the suction port 20 in the axial direction. The fibers 15 of the first fiber bundle 11 are thick and hard. Therefore, when the rotary brush 10 rotates while the first fiber bundle 11 is in contact with the inner edge portion of the suction port 20, the rotational resistance of the rotary brush 10 increases. As a result, the smooth rotation of the rotating brush 10 may be hindered, or the power consumption of the rotating brush motor 64 for rotating the rotating brush 10 may increase. By preventing the first fiber bundle 11 from coming into contact with the inner edge of the suction port 20, the rotating brush 10 can rotate smoothly, and an increase in power consumption of the rotating brush motor 64 is suppressed.

The first support device 50 is detachable from the first connecting mechanism 30 and has a holder member 51 that holds the bearing 33. Even if a hair-like foreign substance is wrapped around the cap member 31 of the first connecting mechanism 30 or entangled with the holder member 51, the user of the dust collector 1 can remove the holder member 51 from the first connecting mechanism 30. Hair-like foreign substances can be easily removed.

The second support device 60 is removable from the second connecting mechanism 40 and has a connecting member 61 that meshes with the protrusion 41C of the cap member 41. Even if a hair-like foreign substance is wrapped around the cap member 41 of the second connecting mechanism 40 or entangled with the connecting member 61, the user of the dust collector 1 can remove the second connecting mechanism 40 from the connecting member 61. Hair-like foreign substances can be easily removed. Further, the connecting member 61 can be separated from the rotating member 62 by releasing the fixing by the screw 63. Even when the hair-like foreign matter is entangled with the connecting member 61, the user of the dust collector 1 can easily remove the hair-like foreign matter by removing the connecting member 61 from the rotating member 62.

As described above, since the first support device 50 has the holder member 51 that can be attached to and detached from the first connecting mechanism 30, even if hair-like foreign matter enters the boundary between the first connecting mechanism 30 and the first supporting device 50, dust is collected. The user of the machine 1 can smoothly carry out the maintenance work for removing the hair-like foreign matter. Further, since the second support device 60 has a connecting member 61 that can be attached to and detached from the second connecting mechanism 40 and can be separated from the rotating member 62, a hair-like foreign substance is present at the boundary between the second connecting mechanism 40 and the second supporting device 60. Even if the dust enters, the user of the dust collector 1 can smoothly carry out the maintenance work for removing the hair-like foreign matter.

[effect]
As described above, the rotating brush 10 includes a rotating body 13, a first fiber bundle 11 supported by the rotating body 13, and a second fiber bundle 12 supported by the rotating body 13. The first fiber bundle 11 and the second fiber bundle 12 are arranged at intervals in the circumferential direction of the rotating body 13. The fiber 15 of the first fiber bundle 11 is thicker and harder than the fiber 17 of the second fiber bundle 12. When the surface FL to be cleaned is the carpet surface, the first fiber bundle 11 can capture the foreign matter existing on the carpet surface even if the second fiber bundle 12 is difficult to capture the foreign matter existing on the carpet surface. When the surface FL to be cleaned is the floor surface, each of the first fiber bundle 11 and the second fiber bundle 12 can capture foreign matter existing on the floor surface. In addition, the second fiber bundle 12 can wipe off minute foreign substances existing on the floor surface. In this way, when the dust collector 1 cleans the cleaning target surface FL having different surface conditions such as the floor surface or the carpet surface, the deterioration of the foreign matter trapping performance and the wiping performance of the cleaning target surface FL by the rotating brush 10 is suppressed. Will be done. Therefore, the deterioration of the cleaning performance of the dust collector 1 is suppressed.

Further, when hair-like foreign matter such as hair or thread is present on the surface FL to be cleaned, as described with reference to FIG. 17, even if the second fiber bundle 12 cannot capture the hair-like foreign matter, the first The fiber bundle 11 can capture hair-like foreign substances. Therefore, it is suppressed that the hair-like foreign matter moves to the right end portion or the left end portion of the rotating brush 10. As a result, hair-like foreign matter is prevented from entering the boundary between the first connecting mechanism 30 and the first support device 50 and entering the boundary between the second connecting mechanism 40 and the second support device 60. Since the rotary brush 10 can rotate smoothly, deterioration of the cleaning performance of the dust collector 1 is suppressed.

Further, when the hair-like foreign matter enters the boundary between the first connecting mechanism 30 and the first support device 50, maintenance work is performed to remove the hair-like foreign matter that has entered the boundary between the first connecting mechanism 30 and the first support device 50. It will be necessary to carry out. Similarly, when a hair-like foreign substance enters the boundary between the second connecting mechanism 40 and the second support device 60, maintenance work for removing the hair-like foreign substance that has entered the boundary between the second connecting mechanism 40 and the second support device 60. Will need to be implemented. According to the embodiment, hair-like foreign matter is prevented from entering the boundary between the first connecting mechanism 30 and the first support device 50 and entering the boundary between the second connecting mechanism 40 and the second support device 60. Therefore, maintenance work does not have to be performed frequently.

Further, even when a hair-like foreign substance enters the boundary between the first connecting mechanism 30 and the first supporting device 50, the first supporting device 50 has a holder member 51 that can be attached to and detached from the first connecting mechanism 30, so that dust is collected. The user of the machine 1 can smoothly carry out the maintenance work for removing the hair-like foreign matter by removing the holder member 51 from the first connecting mechanism 30. Further, even when a hair-like foreign substance enters the boundary between the second connecting mechanism 40 and the second supporting device 60, the second supporting device 60 can be attached to and detached from the second connecting mechanism 40 and can be separated from the rotating member 62. Since the member 61 is provided, the user of the dust collector 1 performs maintenance work for removing hair-like foreign matter by removing the connecting member 61 from the second connecting mechanism 40 or removing the connecting member 61 from the rotating member 62. It can be carried out smoothly.

The density of the fibers 15 of the first fiber bundle 11 is lower than the density of the fibers 17 of the second fiber bundle 12. As a result, as described with reference to FIG. 17, even if the second fiber bundle 12 cannot capture the hair-like foreign matter, the hair-like foreign matter can easily enter between the fibers 15 of the first fiber bundle 11. it can. The hair-like foreign matter is captured by the first fiber bundle 11.

The first fiber bundle 11 and the second fiber bundle 12 are alternately arranged in the circumferential direction. As a result, when the rotary brush 10 rotates, the first fiber bundle 11 and the second fiber bundle 12 alternately come into contact with the surface FL to be cleaned. Therefore, the generation of vibration is suppressed, and the rotating brush 10 can rotate smoothly.

The diameter of the fiber 15 of the first fiber bundle 11 is 15 times or more and 30 times or less the diameter of the fiber 17 of the second fiber bundle 12. As a result, the first fiber bundle 11 can sufficiently scrape up the foreign matter existing on the carpet surface. The second fiber bundle 12 can sufficiently wipe the floor surface.

The diameter of the fiber 15 of the first fiber bundle 11 is 0.15 mm or more and 0.30 mm or less. As a result, the first fiber bundle 11 can sufficiently scrape up the foreign matter existing on the carpet surface.

The diameter of the fiber 17 of the second fiber bundle 12 is 0.01 mm or less. As a result, the second fiber bundle 12 can sufficiently wipe the floor surface.

The single fiber fineness of the first fiber bundle 11 is 215 dtex or more and 870 dtex or less, and the single fiber fineness of the second fiber bundle 12 is 1 dtex or more and 50 dtex or less. As a result, the first fiber bundle 11 can sufficiently scrape up the foreign matter existing on the carpet surface. The second fiber bundle 12 can sufficiently wipe the floor surface.

The height H1 of the first fiber bundle 11 is lower than the height H2 of the second fiber bundle 12. Therefore, as described with reference to FIG. 14, when the fiber 15 of the first fiber bundle 11 comes into contact with the surface FL to be cleaned, the bending of the fiber 15 is suppressed. As a result, the first fiber bundle 11 can scrape up the foreign matter existing on the surface FL to be cleaned while the increase in the rotational resistance of the rotating brush 10 is suppressed. Further, as described with reference to FIG. 15, when the fibers 17 of the second fiber bundle 12 come into contact with the surface FL to be cleaned, the fibers 17 are sufficiently bent. As a result, the second fiber bundle 12 can be cleaned so as to wipe off the surface FL to be cleaned.

The rotating body 13 has a plurality of grooves 70 provided at intervals in the circumferential direction. The first fiber bundle 11 and the second fiber bundle 12 are supported by different grooves 70. As a result, the first fiber bundle 11 and the second fiber bundle 12 are sufficiently separated in the circumferential direction. Therefore, deterioration of the foreign matter trapping performance by the rotating brush 10 and the wiping performance of the cleaning target surface FL is suppressed.

The first groove 71 in which the first fiber bundle 11 is arranged and the second groove 72 in which the second fiber bundle 12 is arranged are provided at equal intervals in the circumferential direction. As a result, when the rotary brush 10 rotates, the first fiber bundle 11 and the second fiber bundle 12 come into contact with the cleaning target surface FL at regular time intervals. Therefore, the generation of vibration is suppressed, and the rotating brush 10 can rotate smoothly.

The left end 70L and the right end 70R of the groove 70 in the axial direction are arranged at the same position in the circumferential direction. The central portion 70C of the groove 70 in the axial direction is arranged at a position different from that of the left end portion 70L and the right end portion 70R in the circumferential direction. When the rotating body 13 rotates in the specified rotation direction RC, the central portion 70C is arranged behind the left end portion 70L and the right end portion 70R in the rotation direction. When the rotating body 13 rotates in the specified rotation direction RC, the left end portion and the right end portion of the first fiber bundle 11 come into contact with the cleaning target surface FL before the central portion of the first fiber bundle 11. The left end portion and the right end portion of the second fiber bundle 12 come into contact with the cleaning target surface FL before the central portion of the second fiber bundle 12. As a result, when hair-like foreign matter such as hair or thread is present on the surface FL to be cleaned, the hair-like foreign matter is suppressed from moving to the left end portion or the right end portion of the rotating brush 10.

Both ends of the second fiber bundle 12 in the axial direction come into contact with the inner edge of the suction port 20. As a result, as described with reference to FIG. 18, even if the hair-like foreign matter moves to the left end or the right end of the rotating brush 10, the hair-like foreign matter stays at the boundary between the cap member 41 and the second support device 60. It is suppressed that the hair-like foreign matter enters the boundary between the cap member 31 and the first support device 50.

Both ends of the first fiber bundle 11 in the axial direction are separated from the inner edge of the suction port 20. As a result, as described with reference to FIG. 18, the rotating brush 10 can rotate smoothly, and an increase in power consumption of the rotating brush motor 64 is suppressed.

[Other Embodiments]
In the above-described embodiment, the fibers 15 of the first fiber bundle 11 and the fibers 17 of the second fiber bundle 12 are nylon fibers. The fibers 15 of the first fiber bundle 11 and the fibers 17 of the second fiber bundle 12 may be polypropylene fibers.

In the above-described embodiment, the fibers 15 of the first fiber bundle 11 and the fibers 17 of the second fiber bundle 12 are made of the same material. The fibers 15 of the first fiber bundle 11 and the fibers 17 of the second fiber bundle 12 may be made of different materials. For example, the fiber 15 of the first fiber bundle 11 may be a nylon fiber and the fiber 17 of the second fiber bundle 12 may be a polypropylene fiber.

In the above-described embodiment, the fibers 15 of the first fiber bundle 11 and the fibers 17 of the second fiber bundle 12 are synthetic resin fibers. One or both of the fibers 15 of the first fiber bundle 11 and the fibers 17 of the second fiber bundle 12 may be metal fibers.

In the above-described embodiment, two first fiber bundles 11 are provided and two second fiber bundles 12 are provided. A plurality of the first fiber bundles 11 are provided with three or more, and a plurality of the second fiber bundles 12 are provided with three or more so that the first fiber bundles 11 and the second fiber bundles 12 are alternately arranged in the circumferential direction. May be done.

In the above-described embodiment, both ends of the second fiber bundle 12 in the axial direction may be separated from the inner edge portion of the suction port 20. Both ends of the first fiber bundle 11 in the axial direction may come into contact with the inner edges of the suction port 20.

In the above-described embodiment, the groove 70 may be provided with the rotation shaft RX in a spiral shape around the rotation shaft RX.

In the above-described embodiment, the first groove 71 in which the first fiber bundle 11 is arranged and the second groove 72 in which the second fiber bundle 12 is arranged may be provided at different intervals in the circumferential direction.

In the above-described embodiment, the height H1 of the first fiber bundle 11 and the height H2 of the second fiber bundle 12 may be equal to each other. The height H1 of the first fiber bundle 11 may be higher than the height H2 of the second fiber bundle 12.

In the above-described embodiment, the first fiber bundle 11 and the second fiber bundle 12 do not have to be arranged alternately in the circumferential direction. In the circumferential direction, the first fiber bundle 11 may be arranged next to the first fiber bundle 11, or the second fiber bundle 12 may be arranged next to the second fiber bundle 12.

In the above-described embodiment, the density of the fibers 15 of the first fiber bundle 11 and the density of the fibers 17 of the second fiber bundle 12 may be substantially equal. Further, the density of the fibers 15 of the first fiber bundle 11 may be higher than the density of the fibers 17 of the second fiber bundle 12. Since the fibers 15 of the first fiber bundle 11 are thick and hard, the first fiber bundle 11 can more smoothly capture hair-like foreign substances such as hair or threads than the second fiber bundle 12.

1 ... dust collector, 2 ... housing, 2A ... top surface, 2B ... bottom surface, 2C ... side surface, 3 ... bumper, 4 ... battery mounting part, 5 ... caster, 6 ... roller, 7 ... wheel, 7D ... wheel motor, 8 ... Side brush, 8A ... Disc member, 8B ... Brush, 8D ... Side brush motor, 9 ... Interface device, 9A ... Operation unit, 9B ... Display unit, 9C ... Light emitting unit, 10 ... Rotating brush, 11 ... First fiber Bundle, 12 ... 2nd fiber bundle, 13 ... Rotating body, 13C ... Rib part, 13D ... Convex part, 14 ... Base material, 14A ... Opening, 15 ... Fiber, 16 ... Base material, 16A ... First sheet, 16B ... 2nd sheet, 17 ... fiber, 20 ... suction port, 20L ... inner edge, 21 ... upper housing, 22 ... lower housing, 23 ... cover plate, 24 ... bottom plate, 25 ... suction motor, 26 ... suction fan, 30 ... 1st connecting mechanism, 31 ... cap member, 31A ... 1st holding part, 31B ... second holding part, 31C ... wall part, 32 ... pin member, 33 ... bearing, 40 ... second connecting mechanism, 41 ... cap member, 41A ... Holding part, 41B ... Convex part, 41C ... Protruding part, 50 ... First support device, 51 ... Holder member, 51A ... Surrounding part, 51Aa ... Opening, 51Ab ... Elastic deformation part, 51Ac ... Convex part, 51B ... Support Part, 51C ... Flange part, 52 ... Support member, 60 ... Second support device, 61 ... Connecting member, 61A ... Base plate, 61B ... Opening, 61C ... Protrusion part, 61D ... Wall part, 61E ... Recession, 62 ... Rotation Member, 62A ... Screw hole, 63 ... Screw, 64 ... Rotating brush motor, 65 ... Power transmission mechanism, 66 ... Bearing, 67 ... Bearing, 68 ... Support member, 70 ... Groove, 70C ... Central part, 70L ... Left end part ( One end), 70R ... Right end (other end), 71 ... First groove, 72 ... Second groove, 73 ... Opening, 74 ... Internal space, AX ... Rotating shaft, BT ... Battery, FL ... Cleaning target surface, G ... distance, RC ... rotation direction, RX ... rotation axis.

Claims (16)

A rotating brush placed at the suction port of a dust collector.
With a rotating body,
The first fiber bundle supported by the rotating body and
A second fiber bundle supported by the rotating body is provided.
The first fiber bundle and the second fiber bundle are arranged at intervals in the circumferential direction of the rotating body.
A rotating brush characterized in that the fibers of the first fiber bundle are thicker than the fibers of the second fiber bundle. The rotary brush according to claim 1, wherein the density of the fibers in the first fiber bundle is lower than the density of the fibers in the second fiber bundle. The rotary brush according to claim 1 or 2, wherein the first fiber bundle and the second fiber bundle are alternately arranged in the circumferential direction. The rotation according to any one of claims 1 to 3, wherein the diameter of the fiber of the first fiber bundle is 15 times or more and 30 times or less the diameter of the fiber of the second fiber bundle. brush. The rotary brush according to claim 4, wherein the fiber diameter of the first fiber bundle is 0.15 mm or more and 0.30 mm or less. The rotary brush according to claim 4, wherein the fiber diameter of the second fiber bundle is 0.01 mm or less. The single fiber fineness of the first fiber bundle is 215 dtex or more and 870 dtex or less.
The rotary brush according to any one of claims 1 to 3, wherein the single fiber fineness of the second fiber bundle is 1 dtex or more and 50 dtex or less. The rotary brush according to any one of claims 1 to 7, wherein the fibers of the first fiber bundle and the fibers of the second fiber bundle are made of the same material. The rotary brush according to any one of claims 1 to 8, wherein the fibers of the first fiber bundle and the fibers of the second fiber bundle are synthetic resin fibers. The rotary brush according to any one of claims 1 to 9, wherein the height of the first fiber bundle is lower than the height of the second fiber bundle. The rotating body has a plurality of grooves provided at intervals in the circumferential direction.
The rotary brush according to any one of claims 1 to 10, wherein the first fiber bundle and the second fiber bundle are supported by different grooves. The rotary brush according to claim 11, wherein the groove in which the first fiber bundle is arranged and the groove in which the second fiber bundle is arranged are provided at equal intervals in the circumferential direction. One end and the other end of the groove in the axial direction of the rotating body are arranged at the same position in the circumferential direction.
The rotary brush according to claim 11 or 12, wherein the central portion of the groove in the axial direction is arranged at a position different from the one end portion and the other end portion in the circumferential direction. The rotating body rotates in a specified rotation direction and
The rotary brush according to claim 13, wherein the central portion is arranged behind the one end portion and the other end portion in the rotation direction. Both ends of the second fiber bundle in the axial direction of the rotating body come into contact with the inner edge portion of the suction port in the axial direction.
The rotary brush according to any one of claims 1 to 14, wherein both ends of the first fiber bundle in the axial direction are separated from the inner edge portion. A housing with a suction port on the bottom and
A dust collector including wheels that support the housing so that the bottom surface and the surface to be cleaned face each other with a gap.
A dust collector comprising the rotating brush according to any one of claims 1 to 15, which is arranged in the suction port.