阅读说明：本技术 旋转刷以及机器人吸尘器 (Rotating brush and robot cleaner ) 是由 小浦健太郎 住吉宏太伽 于 2020-08-17 设计创作，主要内容包括：本发明提供一种旋转刷以及机器人吸尘器,其能够将旋转刷相对于主体简单地进行拆装,并能够抑制：在清扫作业中,旋转刷从主体分离开的情形。旋转刷被安装于：以旋转轴为中心进行旋转的驱动轴。旋转刷具备：基座部件,其用于设置刷；以及固定部件,其分别与基座部件以及驱动轴相接触,并对驱动轴与基座部件进行固定。(The invention provides a rotary brush and a robot dust collector, wherein the rotary brush can be easily assembled and disassembled relative to a main body, and the following can be inhibited: in the cleaning operation, the rotary brush is separated from the main body. The rotary brush is mounted to: and a drive shaft that rotates about the rotation axis. The rotary brush is provided with: a base member for positioning a brush; and a fixing member that is in contact with the base member and the driving shaft, respectively, and fixes the driving shaft and the base member.)

1. A rotary brush mounted to: a drive shaft rotating around the rotation axis,

it is characterized in that the preparation method is characterized in that,

the rotating brush has:

a base member for positioning a brush; and

and a fixing member that is in contact with the base member and the driving shaft, respectively, and fixes the driving shaft and the base member.

2. A rotatable brush according to claim 1,

the base member has: a bore for the disposition of the drive shaft,

the drive shaft has: a projection projecting from an end of the hole,

the fixing member has an engaging member having: and an opening through which the protruding portion can pass, wherein the joining member is in contact with the protruding portion in a state of being disposed around at least a part of the protruding portion.

3. A rotatable brush according to claim 2,

the engagement member is elastically deformable.

4. A rotatable brush according to claim 2 or 3,

the base member has: a guide portion orthogonal to the rotation axis,

the fixing member has a cover member having: and a sliding part guided by the guide part, and the cover part supports the joint part.

5. A rotatable brush according to claim 4,

the cover member has: a positioning portion for positioning the engaging member.

6. A rotatable brush according to claim 5,

the engaging member includes: a fastening portion disposed at least partially around the drive shaft; and a convex portion protruding from the fastening portion in an axial direction parallel to the rotation axis,

the positioning portion includes: and a concave portion into which the convex portion is fitted.

7. A rotatable brush according to claim 5 or 6,

the positioning portion includes a wall portion arranged to: at least a portion of a periphery of the engagement member.

8. A rotatable brush according to claim 2 or 3,

the fixing member has: and a cover member formed integrally with the joint member.

9. A rotatable brush according to any one of claims 4 to 8,

the cover member is configured to: covering the protrusion.

10. A rotatable brush according to any one of claims 4 to 7,

the guide portion includes: a 1 st guide groove extending along the guide direction, and a 2 nd guide groove opposed to the 1 st guide groove,

the sliding portion includes: a 1 st sliding convex part inserted into the 1 st guide groove, and a 2 nd sliding convex part inserted into the 2 nd guide groove.

11. A rotatable brush according to any one of claims 4 to 7,

the guide portion includes: a guide surface disposed around an end of the hole; and a guide rib provided to the guide surface,

the sliding portion includes: a sliding surface facing the guide surface; and a slide groove for disposing at least a part of the guide rib.

12. A rotatable brush according to claim 11,

the guide rib is provided with 1 in a part around the hole.

13. A rotatable brush according to any one of claims 2 to 12,

at least a portion of the engagement member is configured to: a groove formed in the protrusion.

14. A rotatable brush according to claim 1,

the fixing member is movable between a fixing position in contact with the drive shaft and a release position separated from the drive shaft.

15. A rotatable brush according to claim 14,

the base member has a separation suppressing portion capable of suppressing: separation between the base member and the fixing member disposed at the release position.

16. A rotatable brush according to any one of claims 1-15,

disposed around the drive shaft are: a 1 st bearing surface orthogonal to the rotation axis,

the base member has: and a 1 st facing surface facing the 1 st supporting surface.

17. A rotatable brush according to any one of claims 1 to 16, wherein the brush is a brush

Disposed around the drive shaft are: a 2 nd bearing surface including a plane parallel to the rotation axis,

the base member has: and a 2 nd facing surface facing the 2 nd bearing surface.

18. A robot cleaner includes: a housing having a suction port on a bottom surface thereof, a brush motor housed in the housing, and a drive shaft that rotates around a rotation shaft by driving the brush motor,

it is characterized in that the preparation method is characterized in that,

the robot cleaner includes: a rotary brush according to any one of claims 1 to 17 mounted on the drive shaft.

Technical Field

The present invention relates to a rotary brush and a robot cleaner.

Background

In the cleaning work, a robot cleaner can be used. The robot cleaner performs a cleaning operation while autonomously traveling on a surface to be cleaned. The robot cleaner includes a rotating brush called a side brush. Patent document 1 discloses: an example of the side brush.

Prior patent literature

Patent document

Patent document 1: japanese registration Utility model No. 3182828

Disclosure of Invention

The rotating brush can be attached to and detached from the main body of the robot cleaner, so that a user can easily perform maintenance of the rotating brush. On the other hand, it is necessary to suppress: in the cleaning operation, the rotary brush is separated from the main body.

The purpose of the present invention is to enable a rotary brush to be easily attached to and detached from a main body, and to suppress: in the cleaning operation, the rotary brush is separated from the main body.

According to the present invention, there can be provided a rotary brush attached to: a drive shaft that rotates around a rotation shaft, wherein the rotating brush includes: a base member for positioning a brush; and a fixing member that is in contact with the base member and the driving shaft, respectively, and fixes the driving shaft and the base member.

According to the present invention, the rotary brush can be easily attached to and detached from the main body, and: in the cleaning operation, the rotary brush is separated from the main body.

Drawings

Fig. 1 is a perspective view illustrating a robot cleaner according to an embodiment.

Fig. 2 is a bottom view of the robot cleaner according to the embodiment.

Fig. 3 is an exploded perspective view illustrating a robot cleaner according to an embodiment.

Fig. 4 is a sectional view showing a side brush according to the embodiment.

Fig. 5 is an exploded perspective view illustrating a side brush according to the embodiment.

Fig. 6 is an exploded perspective view showing a side brush according to the embodiment.

Fig. 7 is a perspective view of the base member according to the embodiment as viewed from below.

Fig. 8 is a perspective view showing the joint member according to the embodiment as viewed from above.

Fig. 9 is a perspective view showing the lid member according to the embodiment as viewed from above.

Fig. 10 is a perspective view showing the joining member and the lid member according to the embodiment as viewed from above.

Fig. 11 is a perspective view showing a method of fixing the base member and the drive shaft according to the embodiment.

Fig. 12 is a sectional view showing a side brush according to the embodiment.

Fig. 13 is a perspective view showing a side brush according to the embodiment.

Description of the reference numerals

1 … robot cleaner; 1B … body; 2 … outer shell; 2a … top surface; 2B … bottom surface; 2C … side surfaces; 3 … buffer; 4 … battery mounting part; 5 … casters; 6 … roller; 7 … wheels; 7D … wheel motor; 8 … main brush; 8D … main brush motor; 9 … interface means; 9a … operating part; a 9B … display section; 9C … light-emitting portion; 10 … side brushes (rotating brushes); 11 … brush; 12 … base member; 13 … securing means; 14 … engagement member; 15 … a cover member; 20 … suction inlet; 21 … upper shell; 22 … a lower housing; 23 … cover plates; 24 … a bottom panel; 25 … suction motor; 26 … suction fan; 30 … side brush motor; a 30G … gear portion; 31 … drive shaft; a 32 … projection; 33 …, bearing surface No. 1; 34 … bearing surface No. 2; 35 … grooves; 41 … recess; 42 … hole; 43 … opposite side 1; 44 … opposite side 2; 45 … guide portion; 46 … path; 47 … pathway; a 48 … protrusion; 51 … fastening part; 52 … convex portions; 53 … opening; 54 … space; 60 … location portion; 61 … recess; 62 … wall portions; 63 … a sliding part; 121 … recess; 122 … peripheral wall portions; 151 … recess; 151A … space 1; 151B … space 2; 152 … peripheral wall portion; 153 … wall portions; 154 … pathway; 451 … leading surface; 452 … guide ribs; 453 st 453 … groove 1; 454 …, 2 nd guide groove; 510 … a base portion; 511 … 1 st arc part; 512 … arc 2; 631 … sliding surface; 632 … sliding grooves; 633 … st sliding projection; 634 … No. 2 sliding lobe; AX … wheel rotation axis; CX … rotation axis; a BT … battery; FL … cleans the target surface.

Detailed Description

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

In the present embodiment, the positional relationship of each portion will be described using terms of "left", "right", "front", "rear", "upper" and "lower". These terms represent relative positions or directions with reference to the center of the robot cleaner.

[ robot vacuum Cleaner ]

Fig. 1 is a perspective view showing a robot cleaner 1 according to an embodiment. Fig. 2 is a bottom view of the robot cleaner 1 according to the embodiment.

The robot cleaner 1 collects foreign substances present on the cleaning target surface FL while autonomously traveling on the cleaning target surface FL. Examples of the foreign matter present on the cleaning target surface FL include: dust or dirt. Further, examples of the foreign matter present on the cleaning target surface FL include: hair-like foreign matter such as hair or threads.

As shown in fig. 1 and 2, the robot cleaner 1 includes: the vehicle body includes a main body 1B of a housing 2, a bumper 3, a battery mounting portion 4, a caster 5, a roller 6, a wheel 7, a main brush 8, an interface device 9, and a side brush 10.

The housing 2 has an inner space. The housing 2 constitutes at least a part of the main body 1B. The housing 2 has: a top surface 2A, a bottom surface 2B facing the cleaning target surface FL, and a side surface 2C connecting the peripheral portion of the top surface 2A and the peripheral portion of the bottom surface 2B. The outer shape of the housing 2 is substantially circular in a plane parallel to the top surface 2A.

The housing 2 includes: an upper case 21, a lower case 22 disposed below the upper case 21, a cover plate 23 attached to the upper case 21 so as to be openable and closable, and a bottom plate 24 attached to the lower case 22. The lower case 22 is connected to the upper case 21. The top surfaces 2A are respectively disposed: an upper housing 21 and a cover plate 23. The bottom surface 2B is disposed on the lower case 22 and the bottom plate 24, respectively.

The damper 3 is movable in a state of facing at least a part of the side surface 2C. The damper 3 is movably supported by the housing 2. The bumper 3 is opposed to the front of the side surface 2C. The bumper 3 moves relative to the housing 2 when colliding with an object existing around the robot cleaner 1, and cushions an 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 at least in part of the outer surface of the case 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 case 21. Two battery mounting portions 4 are provided.

The battery BT supplies electric power to the electric and electronic devices mounted on the robot cleaner 1 in a state of being mounted on the battery mounting portion 4. The battery BT is: a general-purpose battery that can be used as a power source for various electrical devices. The battery BT can be used as a power source of the electric power tool. The battery BT can be used as a power source for electric devices other than the electric power tool. The battery BT can be used as a power source of a dust collector different from the robot cleaner 1 according to the present embodiment. The battery BT comprises: a lithium ion secondary battery. The battery BT is: rechargeable accumulator. The battery mounting portion 4 includes: the structure is the same as that of the battery mounting part of the electric tool.

The user of the robot cleaner 1 can implement: the work of attaching the battery BT to the battery attachment portion 4, and the work of detaching the battery BT from the battery attachment portion 4. The battery mounting portion 4 includes: a guide member that guides the battery BT, and a main body terminal that is connected to a battery terminal of the battery BT. The user can mount the battery BT to the battery mount portion 4 by inserting the battery BT into the battery mount 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 to the battery mount portion 4, the battery terminals of the battery BT are electrically connected to the main body terminals of the battery mount portion 4. The user of the robot cleaner 1 can remove the battery BT from the battery mounting portion 4 by moving the battery BT upward.

The caster 5 and the roller 6 movably support the housing 2. The caster 5 and the roller 6 are rotatably supported by the housing 2. Two casters 5 are provided at the rear of the bottom surface 2B. A caster 5 is provided at the left portion of the housing 2. The other caster 5 is provided at the right portion of the housing 2. The rollers 6 are provided one at the front of the bottom surface 2B.

The wheels 7 movably support the housing 2. The wheel 7 rotates about a wheel rotation axis AX. The wheel rotation axis AX extends in the left-right direction. The wheels 7 are provided in two. One wheel 7 is provided at the left portion of the housing 2. The other wheel 7 is provided at the right portion of the housing 2.

The wheel 7 is connected to a wheel motor 7D. The wheel motor 7D generates: the power driving the wheels 7 to rotate. The wheel motor 7D is driven by electric power supplied from the battery BT. The wheel motor 7D is disposed in the internal space of the housing 2. The wheel 7 is rotated by driving of a wheel motor 7D. The robot cleaner 1 autonomously travels by rotating the wheels 7.

At least a part of the wheel 7 protrudes downward from the bottom surface 2B. The wheel 9 supports the housing 2 such that the bottom surface 2B and the surface FL to be cleaned face each other with a gap therebetween.

The casing 2 has a suction port 20 in the bottom surface 2B. The suction port 20 is provided in the bottom plate 24. The suction port 20 is for sucking foreign matter present on the cleaning target surface FL. The suction port 20 faces the cleaning target surface FL. The suction port 20 is provided in front of the bottom surface 2B. The suction port 20 is: a rectangular shape longer in the left-right direction.

Disposed in the internal space of the housing 2 are: a suction motor 25 and a suction fan 26. The suction motor 25 generates: the power for rotating the suction fan 26. The suction motor 25 is driven by electric power supplied from the battery BT. The suction motor 25 is driven to rotate the suction fan 26, thereby generating a suction force at the suction port 20. By generating the suction force at the suction port 20, the foreign matter present on the cleaning target surface FL is sucked into the suction port 20.

The main brush 8 is disposed in the suction port 20. The main brush 8 faces the cleaning target surface FL. The main brush 8 is long in the left-right direction. The main brush 8 rotates about a brush rotation axis. The brush rotation shaft extends in the left-right direction. The main brush 8 is rotatably supported at least in part of the housing 2. The main brush 8 is supported by the housing 2 such that at least a part of the main brush 8 protrudes downward from the bottom surface 2B. In a state where the wheel 7 is in contact with the cleaning target surface FL, at least a part of the main brush 8 is in contact with the cleaning target surface FL. By the rotation of the main brush 8, dust present on the cleaning target surface FL is lifted and sucked from the suction port 20.

The main brush 8 is connected to a main brush motor 8D. The main brush motor 8D generates: the power for rotating the main brush 8. The main brush motor 8D is driven by electric power supplied from the battery BT. The main brush motor 8D is disposed in the internal space of the housing 2. The main brush 8 is rotated by driving the main brush motor 8D.

The interface device 9 is disposed at the rear of the cover plate 23. The interface device 9 has: a plurality of operation units 9A to be operated by a user of the robot cleaner 1, and a plurality of display units 9B. As the interface device 9, there can be exemplified: a power button. As the display unit 9B, for example, there can be illustrated: a remaining battery BT display unit. Further, at the front of the upper case 21, there are provided: including a light emitting portion 9C such as a light emitting diode.

[ side brushes ]

Fig. 3 is an exploded perspective view illustrating the robot cleaner 1 according to the embodiment. As shown in fig. 1, 2, and 3, the side brush 10 is disposed in front of the bottom surface 2B. The side brush 10 faces the cleaning target surface FL. At least a part of the side brush 10 is disposed: further forward than the housing 2. The side brush 10 is provided with two. One side brush 10 is provided with: and is positioned further to the left than the suction port 20. The other side brush 10 is provided with: and is positioned further to the right than the suction port 20.

The side brush 10 is: a rotary brush rotating about the rotation axis CX. The rotation axis CX extends in the vertical direction. In the following description, a direction parallel to the rotation axis CX of the side brush 10 is referred to as an axial direction, a radial direction of the rotation axis CX of the side brush 10 is referred to as a radial direction, and a direction around the rotation axis CX of the side brush 10 is referred to as a circumferential direction or a rotational direction. In the radial direction, a position close to the rotation axis CX or a direction close to the rotation axis CX is appropriately referred to as a radially inner side, and a position farther from the rotation axis CX or a direction away from the rotation axis CX is appropriately referred to as a radially outer side.

The robot cleaner 1 includes: a side brush motor 30 housed in the housing 2, and a drive shaft 31 that rotates about the rotation axis CX by driving the side brush motor 30. The side brush 10 is mounted on the drive shaft 31.

The side brush motor 30 includes: a motor unit (not shown) for generating power for rotating the side brush 10; and a gear portion 30G for transmitting power generated by the motor portion to the side brush 10. The motor unit of the side brush motor 30 is driven by electric power supplied from the battery BT. The side brush motor 30 is disposed in the internal space of the housing 2. The side brush 10 is rotated by driving of the side brush motor 30. By the rotation of the side brush 10, foreign matters present on the cleaning target surface FL around the housing 2 move toward the suction port 20.

The side brush 10 has: a base member 12 for mounting the brush 11, and a fixing member 13 for fixing the driving shaft 31 to the base member 12. The fixing member 13 includes: a joint member 14, and a cover member 15 for supporting the joint member 14.

The base member 12 is attached to the drive shaft 31 so that at least a part of the brush 11 protrudes outward from the side surface 2C. The base member 12 is attached to the drive shaft 31 so that at least a part of the brush 11 overlaps the suction port 20. In a state where the wheel 7 is disposed on the cleaning target surface FL, at least a part of the brush 11 is in contact with the cleaning target surface FL.

Fig. 4 is a sectional view showing the side brush 10 according to the embodiment. Fig. 5 and 6 are exploded perspective views of the side brush 10 according to the embodiment. Fig. 5 is an exploded perspective view showing the side brush 10 viewed from above. Fig. 6 is an exploded perspective view showing the side brush 10 viewed from below. Fig. 7 is a perspective view of the base member 12 according to the embodiment as viewed from below.

As shown in fig. 4, 5, 6, and 7, the base member 12 has a disc shape. The base member 12 has a recess 121 and a peripheral wall portion 122. The recess 121 is defined at a position inside the peripheral wall portion 122. The recess 121 is recessed upward from the lower surface of the base member 12.

The base member 12 has: a recess 41 into which the brush 11 is inserted. The recess 41 is formed on the outer surface of the peripheral wall portion 122. The plurality of recesses 41 are provided at intervals in the circumferential direction of the rotation shaft CX. The brushes 11 are inserted into the plurality of recesses 41, respectively. Brushes 11 are coupled to base member 12 in a radial pattern.

The base member 12 has: for configuring the hole 42 of the drive shaft 31. The holes 42 are formed in: a central portion of the base member 12. The hole 42 penetrates the base member 12. In a state where at least a part of the drive shaft 31 is disposed in the hole 42, at least a part of the drive shaft 31 protrudes downward from a lower end portion of the hole 42.

In the following description, a part of the drive shaft 31 protruding from the lower end portion of the hole 42 is referred to as a protruding portion 32 as appropriate. The projection 32 includes: the lower end of the drive shaft 31.

The 1 st support surface 33 is disposed around the drive shaft 31. The 1 st support surface 33 is disposed: at a position above the projection 32. The 1 st support surface 33 is disposed: at least a portion of the side brush motor 30. The 1 st support surface 33 is orthogonal to the rotation axis CX. The 1 st bearing surface 33 comprises a flat surface.

The 2 nd bearing surface 34 is disposed around the drive shaft 31. The 2 nd bearing surface 34 is disposed: and a position above the 1 st support surface 33. The 2 nd bearing surface 34 is connected to at least a part of the peripheral portion of the 1 st bearing surface 33. The 2 nd bearing surface 34 is disposed: at least a portion of the side brush motor 30. The 2 nd bearing surface 34 is parallel to the rotation axis CX. The 2 nd bearing surface 34 comprises a flat surface.

The base member 12 has: and a 1 st facing surface 43 facing the 1 st supporting surface 33. The 1 st facing surface 43 is disposed: at least a portion of the circumference of the aperture 42. The 1 st facing surface 43 is orthogonal to the rotation axis CX. The 1 st opposing surface 43 includes a flat surface.

The base member 12 has: and a 2 nd facing surface 44 facing the 2 nd bearing surface 34. The 2 nd opposed surface 44 is disposed: at least a portion of the circumference of the aperture 42. The 2 nd opposed surface 44 is parallel to the rotation axis CX. The 2 nd opposing surface 44 comprises a flat surface.

In a state where the drive shaft 31 is inserted into the hole 42, the 1 st support surface 33 is in contact with the 1 st facing surface 43. The base member 12 is positioned in the axial direction with respect to the drive shaft 31 by the contact of the 1 st support surface 33 with the 1 st facing surface 43.

In a state where the drive shaft 31 is inserted into the hole 42, the 2 nd support surface 34 is in contact with the 2 nd facing surface 44. The base member 12 is positioned in the radial direction and the circumferential direction with respect to the drive shaft 31 by the contact between the 2 nd bearing surface 34 and the 2 nd facing surface 44.

The base member 12 has: a guide portion 45 perpendicular to the rotation axis CX. The guide portion 45 is used to guide the fixing member 13. The guide portion 45 is provided to: the inner side of the peripheral wall 122.

In the following description, the direction in which the guide portion 45 guides the fixing member 13 is appropriately referred to as a guide direction. The guide direction is orthogonal to the rotation axis CX. I.e. orthogonal to the axial direction and to the guiding direction. In the following description, a direction perpendicular to both the axial direction and the guiding direction is referred to as a width direction as appropriate.

As shown in fig. 7, the guide portion 45 extends along the guide direction. The guide portion 45 includes: a guide surface 451 arranged around the lower end portion of the hole 42; and a guide rib 452 provided to the guide surface 451.

The guide surface 451 is disposed: the inner position of the recess 121. The guide surface 451 includes: a plane orthogonal to the rotation axis CX.

The guide rib 452 protrudes downward from the guide surface 451. The guide ribs 452 extend along the guide direction. Only 1 guide rib 452 is provided around the lower end portion of the hole 42. The guide rib 452 extends radially outward from the lower end portion of the hole 42.

In addition, the guide portion 45 includes: a 1 st guide groove 453 along the guide direction, and a 2 nd guide groove 454 opposed to the 1 st guide groove 453.

The 1 st guide groove 453 and the 2 nd guide groove 454 are formed in: at least a portion of the inner surface of the peripheral wall portion 122. The 1 st guide groove 453 and the 2 nd guide groove 454 are arranged along the width direction. In the width direction, the hole 42 is disposed between the 1 st guide groove 453 and the 2 nd guide groove 454. The 1 st guide groove 453 and the 2 nd guide groove 454 are provided on both sides of the hole 42 in the width direction.

The 1 st guide groove 453 is formed such that: the inner surface of the peripheral wall 122 on one side in the width direction is recessed toward one side in the width direction. The 1 st guide groove 453 extends in the guide direction.

The 2 nd guide groove 454 is formed with: the inner surface of the peripheral wall portion 122 on the other side in the width direction is recessed toward the other side in the width direction. The 2 nd guide groove 454 extends in the guide direction.

Fig. 8 is a perspective view of the joint member 14 according to the embodiment as viewed from above. As shown in fig. 4, 5, 6, and 8, the joining member 14 includes: a fastening portion 51 disposed at least partially around the drive shaft 31; and a convex portion 52 protruding from the fastening portion 51 in the axial direction.

The fastening portion 51 has: base portion 510, 1 st arc portion 511, and 2 nd arc portion 512. The base end of the 1 st arc 511 is connected to the base portion 510. The base end of the 2 nd arc 512 is connected to the base 510. The tip of the 1 st arc 511 is separated from the tip of the 2 nd arc 512. The base portion 510, the 1 st arc portion 511, and the 2 nd arc portion 512 are arranged such that: around the rotation axis CX.

The projection 52 projects axially from the base portion 510. The convex portion 52 protrudes downward.

The joint member 14 is formed by processing 1 metal plate. The convex portion 52 is formed by bending a part of the metal plate. The engaging member 14 is elastically deformable. The engagement member 14 comprises a circlip.

The joining member 14 has: and an opening 53 provided between the tip end of the 1 st arc portion 511 and the tip end of the 2 nd arc portion 512. The projection 32 of the drive shaft 31 can pass through the opening 53. The diameter of the projection 32 is larger than the size of the opening 53. When the projection 32 passes through the opening 53, the engaging member 14 is elastically deformed. By the engaging member 14 being elastically deformed, the size of the opening 53 becomes large, so that the projection 32 can pass through the opening 53.

Further, the joint member 14 includes: a space 54 for disposing the projection 32. The protruding portion 32 is inserted into the space 54 from the outside of the engaging member 14 through the opening 53. As described above, when the projection 32 passes through the opening 53, the engaging member 14 is elastically deformed. Thereby, the protrusion 32 can pass through the opening 53. The projection 32 passing through the opening 53 is disposed in the space 54. In the state where the protruding portion 32 is disposed in the space 54, the elastic deformation of the engaging member 14 is released, so that the shape of the engaging member 14 returns to the initial state.

The joining member 14 is arranged around at least a part of the projection 32, and is in contact with the projection 32. The fastening portion 51 of the engaging member 14 fastens the protruding portion 32.

The protrusion 32 has a groove 35 formed therein. In a state where the protrusion 32 is disposed in the space 54, at least a part of the joining member 14 is disposed in the groove 35. In the present embodiment, a part of the 1 st arc portion 511 and a part of the 2 nd arc portion 512 are fitted in the groove 35.

Fig. 9 is a perspective view showing the lid member 15 according to the embodiment as viewed from above. Fig. 10 is a perspective view showing the joint member 14 and the lid member 15 according to the embodiment as viewed from above. As shown in fig. 4, 5, 6, 9, and 10, the cover member 15 is block-shaped. The cover member 15 has: a recess 151 and a peripheral wall 152. The recess 151 is defined at a position inside the peripheral wall portion 152. The concave portion 151 is recessed downward from the top surface of the lid member 15.

The recess 151 has: the 1 st space 151A and the 2 nd space 151B. A pair of wall portions 153 is provided between the 1 st space 151A and the 2 nd space 151B. The wall 153 protrudes from the inner surface of the peripheral wall 152 in the width direction. A passage 154 is formed between the pair of wall portions 153. The protrusion 32 can pass through the passage 154.

The cover member 15 is used to support the engaging member 14. The cover member 15 has: and a positioning portion 60 for positioning the engaging member 14. The positioning portion 60 includes: and a concave portion 61 into which the convex portion 52 of the joining member 14 is fitted. In addition, the positioning part 60 includes: and a wall portion 62 disposed at least partially around the joining member 14. The wall portion 62 is in contact with the 1 st arc portion 511 and the 2 nd arc portion 512 of the joining member 14, respectively. When the joining member 14 is supported by the cover member 15, the positioning portion 60 can suppress variation in the relative position between the joining member 14 and the cover member 15.

The cover member 15 has: and a slide portion 63 guided by the guide portion 45 of the base member 12.

The slide portion 63 includes: a slide surface 631 facing the guide surface 451 of the base member 12; and a slide groove 632 for disposing at least a part of the guide rib 452 of the base member 12. The slide surface 631 includes an end surface of the peripheral wall portion 152. The slide groove 632 includes: a recess formed in a portion of the peripheral wall portion 152. As shown in fig. 10, the slide groove 632 of the cover member 15, the passage 154 of the cover member 15, and the opening 53 of the joint member 14 are arranged along the guide direction.

The slide portion 63 includes: a 1 st slide protrusion 633 for insertion toward the 1 st guide groove 453 of the base member 12, and a 2 nd slide protrusion 634 for insertion toward the 2 nd guide groove 454.

The 1 st sliding protrusion 633 protrudes toward the width direction side from the side surface of the peripheral wall portion 152 on the width direction side. The 1 st sliding protrusion 633 is provided at 2 intervals in the guiding direction.

The 2 nd sliding protrusion 634 protrudes from the side surface of the peripheral wall portion 152 on the other side in the width direction toward the other side in the width direction. The 2 nd sliding protrusion 634 is provided at intervals in the guide direction by 2.

As shown in fig. 7, the base member 12 has: and a passage 46 connecting an axial end surface of the peripheral wall portion 122 and the 1 st guide groove 453. The passage 46 extends in the axial direction. The passage 46 is formed as: recessed from the inner surface of the peripheral wall 122 toward one side in the width direction. The passages 46 are provided in the guide direction in an amount of 2.

The base member 12 has a passage 47 connecting an axial end surface of the peripheral wall portion 122 and the 2 nd guide groove 454. The passage 47 extends in the axial direction. The passage 47 is formed as: recessed from the inner surface of the peripheral wall portion 122 toward the other side in the width direction. The passages 47 are provided in the guide direction in an amount of 2.

The 1 st slide protrusion 633 is inserted into the 1 st guide groove 453. When the 1 st slide protrusion 633 is inserted into the 1 st guide groove 453, the 1 st slide protrusion 633 is inserted into the passage 46 from below the peripheral wall 122. The upper end of the passage 46 is connected to the 1 st guide groove 453. The 1 st slide protrusion 633 is inserted into the 1 st guide groove 453 after moving to the upper end of the passage 46 and moving in the guide direction.

The 2 nd sliding protrusion 634 is inserted into the 2 nd guide groove 454. When the 2 nd slide protrusion 634 is inserted into the 2 nd guide groove 454, the 2 nd slide protrusion 634 is inserted into the passage 47 from below the peripheral wall portion 122. The upper end of the passage 47 is connected to the 2 nd guide groove 454. The 2 nd sliding protrusion 634 is inserted into the 2 nd guide groove 454 after moving to the upper end of the passage 47 and then moving in the guide direction.

Fig. 11 is a perspective view showing a method of fixing the base member 12 and the drive shaft 31 according to the embodiment. The drive shaft 31 is inserted toward the hole 42 of the base member 12. The drive shaft 31 has: a projection 32 projecting from a lower end of the hole 42.

As described with reference to fig. 10, the joint member 14 is supported by the cover member 15. The fixing member 13 is produced by joining the joining member 14 and the cover member 15.

The fixing member 13 is disposed in the recess 121 of the base member 12. The operation of inserting the 1 st sliding protrusion 633 into the passage 46 and the operation of inserting the 2 nd sliding protrusion 634 into the passage 47 are performed simultaneously. After the 1 st sliding protrusion 633 moves to the upper end of the passage 46 and the 2 nd sliding protrusion 634 moves to the upper end of the passage 47, the fixing member 13 moves toward the guiding direction. Thereby, the 1 st slide protrusion 633 is disposed in the 1 st guide groove 453, and the 2 nd slide protrusion 634 is disposed in the 2 nd guide groove 454. The 1 st slide protrusion 633 is guided by the 1 st guide groove 453. The 2 nd sliding protrusion 634 is guided by the 2 nd guide groove 454.

At least a part of the guide rib 452 is disposed in the slide groove 632. Further, the guide surface 451 is in contact with the slide surface 631.

The fixed member 13 and the base member 12 are coupled to each other by disposing the 1 st slide protrusion 633 in the 1 st guide groove 453 and disposing the 2 nd slide protrusion 634 in the 2 nd guide groove 454. The cover member 15 is configured to: the protrusion 32 is covered. The projection 32 is disposed in the 2 nd space 151B.

Fig. 12 is a sectional view showing the side brush 10 according to the embodiment. As shown in fig. 4 and 12, the fixing member 13 is guided in the guiding direction by the guide portion 45 of the base member 12, and the fixing member 13 is movable between a fixing position in contact with the drive shaft 31 and a release position separated from the drive shaft 31.

As shown in fig. 12, in a state where the fixing member 13 is disposed at a release position apart from the protruding portion 32 of the drive shaft 31, the protruding portion 32 is disposed at: the 2 nd space 151B of the concave portion 151 of the cover member 15. In a state where the fixing member 13 is disposed at the release position, the protruding portion 32 does not contact the fixing member 13. The protruding portion 32 is disposed: outside of the space 54 of the engagement member 14. In a state where the fixing member 13 is disposed at the release position, the protruding portion 32 is covered by the cover member 15.

In a state where the fixed member 13 is disposed at the release position, although the protruding portion 32 is not in contact with the fixed member 13, the 1 st sliding protrusion 633 is disposed in the 1 st guide groove 453, and the 2 nd sliding protrusion 634 is disposed in the 2 nd guide groove 454. That is, the 1 st sliding projection 633 and the 2 nd sliding projection 634 are hooked on the base member 12. Accordingly, in the state where the fixing member 13 is disposed at the release position, it is possible to suppress: separation between the base member 12 and the fixed member 13. In other words, in the state where the fixing member 13 is disposed at the release position, it is possible to suppress: a situation where the fixing member 13 falls off the base member 12.

In the present embodiment, the 1 st guide groove 453 and the 2 nd guide groove 454 function as a separation suppressing portion that can suppress: and the fixing member 13 disposed at the release position.

Fig. 13 is a perspective view showing the side brush 10 according to the embodiment. As shown in fig. 4 and 13, the fixing member 13 is disposed in the following manner by moving in the guiding direction from the state of being disposed in the release position: a fixed position in contact with the projection 32 of the drive shaft 31. When the fixing member 13 moves from the release position toward the fixing position, the protrusion 32 is shifted from the state of being disposed in the 2 nd space 151B to the state of being disposed in the 1 st space 151A. The protrusion 32 can pass through the passage 154. When the fixing member 13 moves from the release position to the fixing position, the protrusion 32 passes through the passage 154, and changes from the state of being disposed in the 2 nd space 151B to the state of being disposed in the 1 st space 151A.

The guide rib 452 has, on its lower surface: a protrusion 48 protruding downward. When the fixing member 13 moves from the release position toward the fixing position, at least a part of the cover member 15 comes into contact with the protrusion 48. Thus, when the fixing member 13 is moved, a click feeling is generated.

The projection 32 moved from the 2 nd space 151B to the 1 st space 151A is disposed in the space 54 of the joining member 14 through the opening 53. When the projection 32 is disposed in the space 54 of the joining member 14, the joining member 14 is in contact with the projection 32. At least a part of the engaging member 14 is fitted in the groove 35 of the protrusion 32. The protruding portion 32 is fastened to the fastening portion 51 of the engaging member 14. Thereby, the drive shaft 31 and the base member 12 are fixed by the fixing member 13.

The fixing member 13 is in contact with the base member 12 and the driving shaft 31, respectively, to fix the driving shaft 31 to the base member 12.

In the present embodiment, in a state where the fixing member 13 is disposed at the fixed position, the engaging member 14 is in contact with the protruding portion 32, and the cover member 15 is not in contact with the drive shaft 31. In a state where the fixing member 13 is arranged at a fixed position, the cover member 15 is in contact with the base member 12, and the joint member 14 is not in contact with the base member 12.

When the fixing between the base member 12 and the drive shaft 31 is released, the user moves the fixing member 13 from the fixing position to the release position. With the fixing member 13 disposed at the release position, the user can detach the base member 12 from the drive shaft 31. Even when the base member 12 is detached from the drive shaft 31, the separation suppressing portion including the 1 st guide groove 453 and the 2 nd guide groove 454 suppresses: a situation where the fixing member 13 falls off the base member 12.

[ Effect ]

As described above, according to the embodiment, the side brush 10 includes: a base member 12 for mounting the brush 11, and a fixing member 13. The fixing member 13 is in contact with the base member 12 and the driving shaft 31, respectively, to fix the driving shaft 31 and the base member 12. The user can easily fix the side brush 10 to the drive shaft 31 by simply moving the fixing member 13 in the guide direction. Further, by the fixed member 13 being in contact with the base member 12 and the drive shaft 31, respectively, it is possible to suppress: in the cleaning operation, the side brush 10 is separated from the drive shaft 31. Further, the user can easily detach the side brush 10 from the drive shaft 31 by simply moving the fixing member 13 in the guide direction.

The base member 12 has: for configuring the hole 42 of the drive shaft 31. The drive shaft 31 has: a projection 32 projecting from a lower end of the hole 42. The fixing member 13 includes an engaging member 14, the engaging member 14 includes an opening 53 through which the protruding portion 32 can pass, and the engaging member 14 is in contact with the protruding portion 32 in a state of being disposed at least in part of the periphery of the protruding portion 32. Thus, the user can dispose the protruding portion 32 inside the joining member 14 through the opening 53 simply by moving the fixing member 13 in the guide direction. The base member 12 and the drive shaft 31 are fixed by the contact of the engaging member 14 and the projection 32.

The engaging member 14 is elastically deformed. Thus, the projection 32 can smoothly pass through the opening 53 by the elastic deformation of the joining member 14. Further, the engaging member 14 is fixed to the protruding portion 32 based on the elastic force.

The base member 12 has: a guide portion 45 perpendicular to the rotation axis CX. The fixing member 13 includes: and a sliding portion 63 guided by the guide portion 45. The guide portion 45 guides the fixing member 13 in a direction orthogonal to the rotation axis CX. Thus, the user can easily fix the side brush 10 to the drive shaft 31 by simply moving the fixing member 13 in the guide direction. Further, the fixing member 13 includes: and a cover member 15 for supporting the engaging member 14. The sliding portion 63 is disposed on the cover member 15. Thus, the user can fix the cover member 15 to the base member 12, the drive shaft 31, and the joint member 14 by simply moving the cover member in the guide direction.

The cover member 15 has: and a positioning portion 60 for positioning the engaging member 14. Thereby, the cover member 15 and the joint member 14 are positioned. Can inhibit: the case of relative movement between the cover member 15 and the engaging member 14.

The engaging member 14 includes: a fastening portion 51 disposed at least partially around the drive shaft 31; and a convex portion 52 protruding from the fastening portion 51 in the axial direction. The cover member 15 is formed with a concave portion 61 into which the convex portion 52 is fitted as a positioning portion 60. The lid member 15 and the joint member 14 are positioned by fitting the convex portion 52 into the concave portion 61.

The positioning portion 60 includes a wall portion 62, and the wall portion 62 is disposed: engaging at least a portion of the periphery of the component 14. The cover member 15 and the engaging member 14 are positioned by the engaging member 14 contacting the wall portion 62.

The cover member 15 is configured to: the protrusion 32 is covered. Thereby, the protruding portion 32 is protected by the cover member 15.

The guide portion 45 includes: a 1 st guide groove 453 extending in the guide direction, and a 2 nd guide groove 454 opposed to the 1 st guide groove 453. The slide portion 63 includes: a 1 st slide protrusion 633 for inserting into the 1 st guide groove 453, and a 2 nd slide protrusion 634 for inserting into the 2 nd guide groove 454. Thereby, the fixing member 13 is smoothly guided in the guiding direction. Further, when the release position is established, the 1 st slide protrusion 633 and the 2 nd slide protrusion 634 are hooked on the 1 st guide groove 453 and the 2 nd guide groove 454, whereby: the situation of separation between the base member 12 and the fixed member 13.

The guide portion 45 includes: a guide surface 451 arranged around an end of the hole 42; and a guide rib 452 provided to the guide surface 451. The slide portion 63 includes: a slide surface 631 facing the guide surface 451; and a slide groove 632 for disposing at least a part of the guide rib 452. The sliding surface 631 slides while contacting the guide surface 451, whereby the fixing member 13 can smoothly move in the guide direction. The inner surface of the slide groove 632 slides while contacting the surface of the guide rib 452, and the fixed member 13 can smoothly move in the guide direction.

The guide ribs 452 are provided in 1 in a part around the hole 42. This allows the fixing member 13 to smoothly move between the fixing position and the release position. In addition, the user can recognize the orientation of the base member 12 by the guide ribs 452.

At least a part of the joining member 14 is disposed: a groove 35 formed in the protrusion 32. This can suppress: the situation where the engaging member 14 is disengaged from the projection 32. The engaging member 14 is fixed to the protruding portion 32.

The fixing member 13 is movable between a fixing position in contact with the drive shaft 31 and a release position separated from the drive shaft 31. The user can easily fix the side brush 10 to the drive shaft 31 simply by moving the fixing member 13 toward the fixing position. The user can easily detach the side brush 10 from the drive shaft 31 by simply moving the fixing member 13 to the release position.

The base member 12 has a separation suppressing portion capable of suppressing: the base member 12 and the fixing member 13 disposed at the release position are separated from each other. This can suppress: the fixing member 13 disposed at the release position may fall off the base member 12. Accordingly, the user can smoothly perform maintenance. In addition, the loss of the fixing member 13 can be suppressed.

The 1 st support surface 33 is disposed around the drive shaft 31. The base member 12 has: and a 1 st facing surface 43 facing the 1 st supporting surface 33. The 1 st support surface 33 is orthogonal to the rotation axis CX. The base member 12 and the drive shaft 31 are axially positioned by the contact of the 1 st support surface 33 and the 1 st facing surface 43.

The 2 nd bearing surface 34 is disposed around the drive shaft 31. The base member 12 has: and a 2 nd facing surface 44 facing the 2 nd bearing surface 34. The 2 nd bearing surface 34 includes: a plane parallel to the rotation axis CX. The base member 12 and the drive shaft 31 are positioned in the radial direction and the circumferential direction by the contact between the 2 nd bearing surface 34 and the 2 nd facing surface 44.

[ other embodiments ]

In the above embodiment, the fixing member 13 may include: and a cover member 15 having a sliding portion 63 and formed integrally with the joint member 14. That is, the joint member 14 and the cover member 15 may be formed integrally. The joining member 14 and the cover member 15 may be a single member.