Damping member, cleaning apparatus, and suction head

Abstract

To suppress noise generated from a cleaning apparatus.SOLUTION: A damping member for damping vibration of a cleaning apparatus having a first member and a second member includes a first contact surface that contacts the first member, and a second contact surface that contacts the second member. The first contact surface includes at least two contact surfaces that face directions different from each other.SELECTED DRAWING: Figure 20

Description

[Technical Field]

[0001] The technology disclosed in this specification relates to a damping member, a cleaning device, and a suction head. [Background technology]

[0002] In the technical field of cleaning devices, there is known an electric vacuum cleaner as disclosed in Patent Document 1. In Patent Document 1, the suction head body has a suction head body, a cleaning unit, and an elastically deformable coil spring. The cleaning unit is supported by the suction head body via the coil spring in a non-contact and floating state. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-253206 Summary of the Invention [Problem to be solved by the invention]

[0004] Noise generated by a cleaning device can be unpleasant for the user of the cleaning device and those around it.

[0005] The technology disclosed in this specification aims to suppress noise generated from a cleaning device. [Means for solving the problem]

[0006] The present specification discloses a damping member for damping vibrations of a cleaning device having a first member and a second member. The damping member may have a first contact surface that contacts the first member and a second contact surface that contacts the second member. The first contact surface may include at least two contact surfaces that face in different directions from each other. [Effects of the Invention]

[0007] According to the technology disclosed in this specification, noise generated by the cleaning device is suppressed. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a cleaning device according to a first embodiment, seen from the front left. [Figure 2] FIG. 2 is a perspective view showing the cleaning device according to the first embodiment, seen from the right rear. [Figure 3] FIG. 3 is a front view showing the cleaning device according to the first embodiment. [Figure 4] FIG. 4 is a top view showing the cleaning device according to the first embodiment. [Figure 5] FIG. 5 is a bottom view showing the cleaning device according to the first embodiment. [Figure 6] FIG. 6 is a cross-sectional view showing the cleaning device according to the first embodiment. [Figure 7] FIG. 7 is a cross-sectional view showing the cleaning device according to the first embodiment. [Figure 8] FIG. 8 is a cross-sectional view showing the cleaning device according to the first embodiment. [Figure 9] FIG. 9 is a cross-sectional view showing a part of the cleaning device according to the first embodiment. [Figure 10] FIG. 10 is a perspective view showing the suction head according to the first embodiment, viewed from the front left. [Figure 11] FIG. 11 is a perspective view showing the battery mounting section according to the first embodiment, seen from the left front. [Figure 12] FIG. 12 is a perspective view showing the inside of the suction head according to the first embodiment, seen from the front left. [Figure 13] FIG. 13 is a perspective view showing part of the interior of the suction head according to the first embodiment, seen from the front left. [Figure 14] FIG. 14 is a front view showing a part of the inside of the suction head according to the first embodiment. [Figure 15] FIG. 15 is a perspective view showing the power transmission mechanism according to the first embodiment, viewed from the front left. [Figure 16]FIG. 16 is an exploded perspective view showing part of the interior of the suction head according to the first embodiment, as seen from the front left. [Figure 17] FIG. 17 is a cross-sectional view showing a part of the suction head according to the first embodiment. [Figure 18] FIG. 18 is a cross-sectional view showing a part of the suction head according to the first embodiment. [Figure 19] FIG. 19 is a cross-sectional view showing a part of the suction head according to the first embodiment. [Figure 20] FIG. 20 is a cross-sectional view showing the vicinity of the first damping member according to the first embodiment. [Figure 21] FIG. 21 is a perspective view showing the first damping member according to the first embodiment. [Figure 22] FIG. 22 is a side view showing the first damping member according to the first embodiment. [Figure 23] FIG. 23 is a side view showing the second damping member according to the first embodiment. [Figure 24] FIG. 24 is a perspective view showing the suction head according to the second embodiment, seen from the front left. [Figure 25] FIG. 25 is a perspective view showing the inside of the suction head according to the second embodiment, seen from the front left. [Figure 26] FIG. 26 is a cross-sectional view showing the inside of the suction head according to the second embodiment, as seen from the front left. [Figure 27] FIG. 27 is a cross-sectional view showing the inside of the suction head according to the second embodiment, as seen from the front left. [Figure 28] FIG. 28 is a cross-sectional view showing the inside of the suction head according to the second embodiment, as seen from the front left. [Figure 29] FIG. 29 is a perspective view showing part of the interior of the suction head according to the second embodiment, seen from the front left. [Figure 30] FIG. 30 is an exploded perspective view showing part of the interior of the suction head according to the second embodiment, as seen from the front left. [Figure 31] FIG. 31 is a front view showing a part of the inside of the suction head according to the second embodiment. [Figure 32]FIG. 32 is a cross-sectional view showing a part of the suction head according to the second embodiment. [Figure 33] FIG. 33 is a cross-sectional view showing a part of the suction head according to the second embodiment. [Figure 34] FIG. 34 is a cross-sectional view showing the vicinity of the damping member according to the second embodiment. [Figure 35] FIG. 35 is a perspective view showing a damping member according to the second embodiment. [Figure 36] FIG. 36 is a side view showing a damping member according to the second embodiment. [Figure 37] FIG. 37 is a perspective view showing part of the interior of the suction head according to the third embodiment, seen from the front left. [Figure 38] FIG. 38 is an exploded perspective view showing part of the interior of the suction head according to the third embodiment, as seen from the front left. [Figure 39] FIG. 39 is a cross-sectional view showing a part of the suction head according to the third embodiment. [Figure 40] FIG. 40 is a perspective view showing the rotor shaft, the output shaft, the damping member, and the relay shaft according to the third embodiment, as viewed from the front left. [Figure 41] FIG. 41 is an exploded perspective view showing the rotor shaft, the output shaft, the damping member, and the relay shaft according to the third embodiment, as seen from the front left. [Figure 42] FIG. 42 is a perspective view showing the rotor shaft, the output shaft, the damping member, and the relay shaft according to the third embodiment, as viewed from the left rear. [Figure 43] FIG. 43 is a view of the relay shaft according to the third embodiment as viewed from the right. [Figure 44] FIG. 44 is a perspective view showing the damping member according to the third embodiment, viewed from the right rear. [Figure 45] FIG. 45 is a view of the damping member according to the third embodiment as viewed from the right. [Figure 46] FIG. 46 is an exploded perspective view showing the case according to the fourth embodiment, seen from the front left. DETAILED DESCRIPTION OF THE INVENTION

[0009] In one or more embodiments, a damping member may damp vibrations of a cleaning device having a first member and a second member. The damping member may include a first contact surface that contacts the first member and a second contact surface that contacts the second member. The first contact surface may include at least two contact surfaces that face in different directions from each other.

[0010] In the above configuration, since the first contact surface includes at least two contact surfaces facing in different directions, the contact area between the damping member and the first member is increased, and the damping member can effectively damp vibrations. Since vibrations are damped, noise generated by the cleaning device is suppressed.

[0011] When the first member is a vibration source, the damping member can damp vibrations transmitted from the first member to the second member. Since the vibration of the second member is suppressed, noise generated by the cleaning device is suppressed. Since the first contact surface includes at least two contact surfaces facing in different directions, even if the first member vibrates in different directions, the damping member can effectively damp vibrations of the first member in multiple vibration directions. Since the vibration of the second member is suppressed, noise generated by the cleaning device is suppressed.

[0012] When the second member is a vibration source, the damping member can damp vibrations transmitted from the second member to the first member. Since vibrations of the first member are suppressed, noise generated by the cleaning device is suppressed. Since the first contact surface includes at least two contact surfaces facing in different directions, even if the directions of vibrations input to the first member are different from each other, the damping member can effectively damp vibrations of multiple vibration directions input to the first member. Since vibrations of the first member are suppressed, noise generated by the cleaning device is suppressed.

[0013] In one or more embodiments, the second contact surface may include at least two contact surfaces that face in different directions from one another.

[0014] In the above configuration, when the first member is a vibration source, the second contact surface includes at least two contact surfaces facing in different directions from each other, so that even if the directions of vibrations input to the second member are different from each other, the damping member can effectively damp vibrations in multiple vibration directions.When the second member is a vibration source, the second contact surface includes at least two contact surfaces facing in different directions from each other, so that even if the second member vibrates in different directions from each other, the damping member can effectively damp vibrations in multiple vibration directions.

[0015] In one or more embodiments, the damping member may include a tubular portion, the first contact surface may include an outer surface of the tubular portion, and the second contact surface may include an inner surface of the tubular portion.

[0016] In the above configuration, when the first member contacts the outer surface of the cylindrical portion and the second member contacts the inner surface of the cylindrical portion, the damping member can damp vibrations transmitted from one of the first member and the second member to the other member.

[0017] In one or more embodiments, the second contact surface may include one or both of the upper and lower surfaces of the damping member.

[0018] In the above configuration, when the second member contacts one or both of the upper and lower surfaces of the damping member, the damping member can damp vibrations transmitted from one of the first member and the second member to the other member.

[0019] In one or more embodiments, the damping member may include an opening through which at least a portion of the second member is disposed.

[0020] In the above configuration, when at least a portion of the second member is disposed in the opening of the damping member, the damping member can damp vibrations transmitted from one of the first member and the second member to the other member.

[0021] In one or more embodiments, the damping member may include a cylindrical portion, a first flange portion connected to one end of the cylindrical portion, and a second flange portion connected to the other end of the cylindrical portion. The first contact surface may include an outer surface of the cylindrical portion, a first surface of the first flange portion, and a second surface of the second flange portion. The second contact surface may include an inner surface of the cylindrical portion, a third surface of the first flange portion, and a fourth surface of the second flange portion.

[0022] In the above configuration, the damping member can damp vibrations transmitted from one of the first member and the second member to the other member.

[0023] In one or more embodiments, one or both of the first flange portion and the second flange portion may include a plurality of circumferentially spaced grooves.

[0024] In the above configuration, when the groove is provided in the first flange, the groove facilitates flexural deformation of the first flange, allowing the damping member to effectively damp vibration. Furthermore, when the damping member is inserted into an opening provided in the first or second member, the first flange facilitates flexural deformation, making it easy to insert the damping member into the opening. The same applies when the groove is provided in the second flange.

[0025] In one or more embodiments, the damping member may include one surface, another surface facing in the opposite direction from the one surface, a first recess provided in the one surface, and a second recess provided in the other surface. The first contact surface may include a bottom surface of the first recess and an inner surface of the first recess. The second contact surface may include a bottom surface of the second recess and an inner surface of the second recess.

[0026] In the above configuration, the damping member can damp vibrations transmitted from one of the first member and the second member to the other member, and can transmit the rotational force of the first member to the second member while allowing the relative position of the first member and the second member to change.

[0027] In one or more embodiments, the damping member may be disposed around a fixing member that fixes the first member and the second member.

[0028] In the above configuration, when the first member and the second member are fixed by the fixing member, the damping member can damp vibrations transmitted from one of the first member and the second member to the other member.

[0029] In one or more embodiments, the cleaning device may include a housing having a suction port, a brush disposed in the suction port, a drive unit for rotating the brush, a case for supporting at least a portion of the drive unit, and the damping member described above. The first member may include the case, and the second member may include the housing.

[0030] In the above configuration, when the case of the drive unit is a vibration source, the damping member can dampen vibrations transmitted from the case to the housing, thereby suppressing vibrations in the housing and thereby suppressing noise generated by the cleaning device.

[0031] In one or more embodiments, the drive unit may include a motor and a gear that transmits rotational force generated by the motor to the brush. The case may support the gear.

[0032] In the above configuration, if the gear case is a vibration source, the damping member can dampen the vibration transmitted from the case to the housing. Since vibration of the housing is suppressed, noise generated by the cleaning device is suppressed.

[0033] In one or more embodiments, the drive unit may include a motor, and the case may support the motor.

[0034] In the above configuration, if the motor case is a vibration source, the damping member can dampen the vibration transmitted from the case to the housing, thereby suppressing the vibration of the housing and thereby suppressing the noise generated by the cleaning device.

[0035] In one or more embodiments, the damping member may have a cylindrical portion, the case may have a retaining portion disposed around the cylindrical portion, and the housing may have a protrusion inserted into the cylindrical portion.

[0036] In the above configuration, the cylindrical portion of the damping member can damp vibrations transmitted from the retaining portion of the case to the protruding portion of the housing. Vibrations of the housing are suppressed, and therefore noise generated by the cleaning device is suppressed.

[0037] In one or more embodiments, the cleaning device may include a housing having a suction port, a brush disposed in the suction port, a drive unit for rotating the brush, and the damping member. The drive unit may include a motor, an output shaft coupled to the motor, and an intermediate shaft coupled to the brush. The first member may include the output shaft, and the second member may include the intermediate shaft.

[0038] In the above configuration, when the output shaft is a vibration source, the damping member can damp vibrations transmitted from the output shaft to the intermediate shaft. Since vibrations of the intermediate shaft are suppressed, noise generated by the cleaning device is also suppressed. Furthermore, the damping member can transmit the rotational force of the output shaft to the intermediate shaft while allowing changes in the relative position between the output shaft and the intermediate shaft.

[0039] In one or more embodiments, the damping member may have one surface, another surface facing in the opposite direction to the one surface, a first recess provided in the one surface, and a second recess provided in the other surface. The output shaft may have a first cam portion inserted into the first recess. The relay shaft may have a second cam portion inserted into the second recess.

[0040] In the above configuration, the damping member can transmit the rotational force of the output shaft to the intermediate shaft while allowing the relative position of the output shaft and the intermediate shaft to change.

[0041] In one or more embodiments, the suction head of the cleaning device may include a housing having a suction port, a brush disposed at the suction port, a power transmission mechanism that transmits rotational force generated by the motor to the brush, a case that supports the power transmission mechanism, and the damping member. The first member may include the case, and the second member may include the housing.

[0042] In the above configuration, when the case of the power transmission mechanism is a vibration source, the damping member can dampen the vibration transmitted from the case to the housing, thereby suppressing the vibration of the housing and thereby suppressing the noise generated by the cleaning device.

[0043] In one or more embodiments, the power transmission mechanism may include a gear, and the case may support the gear.

[0044] In the above configuration, if the case supporting the gears of the power transmission mechanism is a vibration source, the damping member can dampen the vibration transmitted from the case to the housing, thereby suppressing the vibration of the housing and thereby suppressing the noise generated by the cleaning device.

[0045] In one or more embodiments, the power transmission mechanism may include a pulley and a belt that is wound around the pulley. The case may support the pulley.

[0046] In the above configuration, if the case supporting the pulley of the power transmission mechanism is a vibration source, the damping member can dampen the vibration transmitted from the case to the housing, thereby suppressing the vibration of the housing and thereby suppressing the noise generated by the cleaning device.

[0047] In one or more embodiments, the suction head may include a screw that secures the first member and the second member. The damping member may be disposed around the screw.

[0048] In the above configuration, when the first member and the second member are fixed together with screws, the damping member can damp vibrations transmitted from one of the first member and the second member to the other member.

[0049] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings, but the present disclosure is not limited to the embodiments. The components of the embodiments described below can be combined as appropriate. In addition, some components may not be used.

[0050] In the embodiment, the positional relationship of each part is described using the terms "left," "right," "front," "rear," "upper," and "lower." These terms indicate relative positions or directions based on the center of the cleaning device 1.

[0051] [First embodiment] A first embodiment will be described.

[0052] <Cleaning device> FIG. 1 is a perspective view of the cleaning device 1 according to this embodiment, seen from the front left. FIG. 2 is a perspective view of the cleaning device 1 according to this embodiment, seen from the rear right. FIG. 3 is a front view of the cleaning device 1 according to this embodiment. FIG. 4 is a top view of the cleaning device 1 according to this embodiment. FIG. 5 is a bottom view of the cleaning device 1 according to this embodiment. FIG. 6 is a cross-sectional view of the cleaning device 1 according to this embodiment, which corresponds to the cross-sectional view taken along line AA in FIG. 3. FIG. 7 is a cross-sectional view of the cleaning device 1 according to this embodiment, which corresponds to the cross-sectional view taken along line BB in FIG. 3. FIG. 8 is a cross-sectional view of the cleaning device 1 according to this embodiment, which corresponds to the cross-sectional view taken along line CC in FIG. 4. FIG. 9 is a cross-sectional view of a portion of the cleaning device 1 according to this embodiment, which corresponds to an enlarged view of a portion of FIG. 8.

[0053] The cleaning device 1 comprises a body 2 , a suction head 3 connected to the lower end of the body 2 , a connecting pipe 4 connecting the body 2 and the suction head 3 , and a handle 5 provided on the upper part of the body 2 .

[0054] In this embodiment, the cleaning device 1 is an upright cleaning device. An upright cleaning device is a cleaning device in which the body 2 can stand upright relative to the suction head 3. The lower end of the body 2 is rotatably connected to the suction head 3. The rotation axis of the body 2 extends in the left-right direction. The body 2 can be rotated so that it can be changed between an upright state and an inclined state relative to the suction head 3. A foot lever 6 is provided between the body 2 and the suction head 3. By operating the foot lever 6, the user can switch between a state in which the body 2 and the suction head 3 are fixed and a state in which the fixation is released.

[0055] The body 2 has a main body housing 20, a collection chamber cover 21, a motor chamber cover 22, a controller 7, and a suction unit 40. The main body housing 20 is long in the vertical direction. The collection chamber cover 21 and the motor chamber cover 22 are each attached to the front of the main body housing 20. The collection chamber cover 21 is positioned higher than the motor chamber cover 22. The main body housing 20 has an exhaust port 8.

[0056] As shown in FIG. 8, the main body housing 20 has a collection chamber 23 in which the dust bag 9 is disposed, and a motor chamber 24 in which the suction unit 40 is disposed.

[0057] The collection chamber 23 is disposed above the motor chamber 24. The collection chamber cover 21 is disposed so as to cover an opening provided in the front of the collection chamber 23. The motor chamber cover 22 is disposed so as to cover an opening provided in the front of the motor chamber 24. The collection chamber 23 is defined by the main body housing 20 and the collection chamber cover 21. The motor chamber 24 is defined by the main body housing 20 and the motor chamber cover 22.

[0058] The collection chamber cover 21 opens and closes the front opening of the collection chamber 23. A claw portion is provided at the lower end of the collection chamber cover 21. A recess is provided in the main body housing 20 below the opening of the collection chamber 23. The recess is provided in the motor chamber cover 22. The claw portion of the collection chamber cover 21 is inserted into the recess in the motor chamber cover 22. A latch mechanism 20A is provided in the main body housing 20 above the opening of the collection chamber 23. The latch mechanism 20A secures the upper part of the collection chamber cover 21 to the main body housing 20. The collection chamber cover 21 has a latch lever 21A that is operated by the user. The latch lever 21A is provided at the front of the collection chamber cover 21. When the user operates the latch lever 21A so that it moves forward, the latch mechanism 20A releases the fastening of the main body housing 20 and the collection chamber cover 21. This opens the front opening of the collection chamber 23.

[0059] As shown in Figure 8, the body 2 has a flow path 25 connecting the collection chamber 23 and the motor chamber 24 inside the main housing 20, a filter 26 arranged at the boundary between the flow path 25 and the collection chamber 23, a sponge sheet 27 arranged in the air flow path leading to the exhaust port 8, and a connecting pipe 28 arranged at the top of the main housing 20.

[0060] The flow path 25 is provided inside the main body housing 20 to the right of the collection chamber 23 and the motor chamber 24. The flow path 25 is provided to extend in the vertical direction. The upper part of the flow path 25 is connected to the collection chamber 23. The lower part of the flow path 25 is connected to the motor chamber 24. The collection chamber 23 and the motor chamber 24 are connected via the flow path 25.

[0061] The filter 26 collects dust. The filter 26 is disposed on the right side of the collection chamber 23. An example of the filter 26 is a HEPA filter (High Efficiency Particulate Air Filter). The filter 26 is detachable from the main body housing 20.

[0062] The sponge sheet 27 is disposed in the air flow path leading to the exhaust port 8. The sponge sheet 27 is a sound absorbing material for the exhaust airflow flowing to the exhaust port 8.

[0063] The connecting pipe 28 is arranged to pass through the upper part of the main housing 20. The lower end of the connecting pipe 28 is arranged in the collection chamber 23. The dust bag 9 is connected to the lower end of the connecting pipe 28. Dust is collected in the dust bag 9.

[0064] The suction head 3 faces the surface to be cleaned. The suction head 3 is movable over the surface to be cleaned. The suction head 3 includes a base housing 30, a head housing 31, a bumper 32, a battery chamber cover 33, a brush 34, a connecting pipe 35, running wheels 36, and auxiliary wheels 37.

[0065] The base housing 30 faces the surface to be cleaned. The base housing 30 has a suction port 38. The suction port 38 is located at the front of the bottom of the base housing 30. The suction port 38 sucks in dust from the surface to be cleaned.

[0066] The head housing 31 is connected to the main body housing 20. The head housing 31 is disposed above the base housing 30. The head housing 31 has a battery chamber 39.

[0067] The bumper 32 is disposed so as to cover the front of the base housing 30 and the front of the head housing 31. The bumper 32 protects the front of the base housing 30 and the front of the head housing 31.

[0068] The battery chamber cover 33 is rotatably connected to the head housing 31. The battery chamber cover 33 is disposed so as to cover an opening provided at the top of the battery chamber 39. The battery chamber 39 is defined by the head housing 31 and the battery chamber cover 33.

[0069] A latch mechanism 31A is provided in the head housing 31 behind the opening of the battery chamber 39. The latch mechanism 31A secures the rear of the battery chamber cover 33 to the head housing 31. The battery chamber cover 33 has a latch lever 33A that is operated by the user. The latch lever 33A is provided at the rear of the battery chamber cover 33. The front of the battery chamber cover 33 is rotatably supported on the front of the head housing 31 via a hinge mechanism 31B. When the user operates the latch lever 33A so that it moves upward, the latch mechanism 31A releases the head housing 31 from securing the battery chamber cover 33 to the head housing 31. This opens the upper opening of the battery chamber 39.

[0070] FIG. 10 is a perspective view of the suction head 3 according to this embodiment, viewed from the front left. FIG. 10 shows the state in which the battery chamber cover 33 is open. As shown in FIG. 10, the head housing 31 has a battery chamber 39 in which the battery attachment section 10 is disposed. In the front-to-rear direction, the battery chamber 39 is located in the center of the head housing 31. An opening is provided at the top of the battery chamber 39. The battery chamber cover 33 opens and closes the opening at the top of the battery chamber 39. A battery pack 11 is attached to the battery attachment section 10. The battery pack 11 is the power source for the cleaning device 1.

[0071] FIG. 11 is a perspective view from the left front showing the battery mounting section 10 according to this embodiment. FIG. 11 shows a state in which the battery pack 11 has been removed from the battery mounting section 10. The battery mounting section 10 is disposed on the bottom surface of the battery chamber 39. The battery pack 11 is mounted to the battery mounting section 10. In this embodiment, two battery mounting sections 10 are provided. The two battery mounting sections 10 are disposed in the left-right direction. The battery mounting section 10 includes a left battery mounting section 10L and a right battery mounting section 10R.

[0072] The battery pack 11 supplies power to the cleaning device 1 when attached to the battery attachment portion 10. The battery pack 11 is a general-purpose battery that can be used as a power source for various electrical devices. The battery pack 11 can be used as a power source for power tools. The battery pack 11 can be used as a power source for electrical devices other than power tools. The battery pack 11 can be used as a power source for cleaning devices other than the cleaning device 1 of this embodiment. The battery pack 11 includes a lithium-ion battery. The battery pack 11 includes a rechargeable secondary battery. The battery attachment portion 10 has a structure similar to that of a battery attachment portion of a power tool.

[0073] A user of the cleaning device 1 can attach and detach the battery pack 11 to and from the battery attachment unit 10. The battery attachment unit 10 has a guide member and a main body terminal. The battery pack 11 has a battery terminal. The guide member of the battery attachment unit 10 guides the battery pack 11. The main body terminal of the battery attachment unit 10 is connected to the battery terminal of the battery pack 11.

[0074] When attaching the battery pack 11 to the left battery attachment section 10L, the user can attach the battery pack 11 to the battery attachment section 10L by inserting the battery pack 11 into the battery attachment section 10L from the left side. The battery pack 11 is inserted into the battery attachment section 10L while being guided by a guide member. When the battery pack 11 is attached to the battery attachment section 10L, the battery terminals of the battery pack 11 and the main body terminals of the battery attachment section 10L are electrically connected. The battery pack 11 has an unlocking button. The user of the cleaning device 1 can remove the battery pack 11 from the battery attachment section 10L by operating the unlocking button of the battery pack 11 and moving the battery pack 11 to the right side.

[0075] When attaching the battery pack 11 to the right battery attachment section 10R, the user can attach the battery pack 11 to the battery attachment section 10R by inserting the battery pack 11 into the battery attachment section 10R from the right side. The battery pack 11 is inserted into the battery attachment section 10R while being guided by a guide member. When the battery pack 11 is attached to the battery attachment section 10R, the battery terminals of the battery pack 11 and the main body terminals of the battery attachment section 10R are electrically connected. The battery pack 11 has an unlocking button. The user of the cleaning device 1 can remove the battery pack 11 from the battery attachment section 10R by operating the unlocking button of the battery pack 11 and moving the battery pack 11 to the left.

[0076] The brush 34 is disposed in the suction port 38. The brush 34 is rotatable about a rotation axis extending in the left-right direction. The brush 34 rotates to scrape off dust present on the surface to be cleaned. A height adjustment dial 12 is disposed on top of the head housing 31. The height adjustment dial 12 is operated by the user. The height of the brush 34 is adjusted by operating the height adjustment dial 12.

[0077] The connecting pipe 35 is connected to the connecting pipe 4. The connecting pipe 35 sends dust sucked in through the suction port 38 to the connecting pipe 4. As shown in FIG. 6 , the front end of the connecting pipe 35 is connected to the suction port 38. The rear end of the connecting pipe 35 is connected to the connecting pipe 4.

[0078] The running wheels 36 and the auxiliary wheels 37 are each provided at the bottom of the base housing 30. Two running wheels 36 are provided. The running wheels 36 rotate around a rotation axis extending in the left-right direction. The rotation of the running wheels 36 causes the suction head 3 to move. Two auxiliary wheels 37 are provided. The auxiliary wheels 37 are positioned forward of the running wheels 36. The auxiliary wheels 37 rotate around a rotation axis extending in the left-right direction.

[0079] The suction head 3 has lights 13 that illuminate the area in front of the suction head 3. Two lights 13 are provided at the front of the suction head 3.

[0080] The connecting pipe 4 connects the body 2 and the suction head 3. The connecting pipe 4 connects the connecting pipe 28 of the body 2 and the connecting pipe 35 of the suction head 3. The connecting pipe 4 is disposed on the right rear side of the body 2 along the vertical direction.

[0081] The suction unit 40 generates a suction force at the suction port 38 that leads to the inside of the main housing 20. The suction unit 40 is disposed in the motor chamber 24. As shown in FIG. 9 , the suction unit 40 has a motor 41, a blower fan 42, a motor housing 43, a base 44, a fan cover 45, and a sensor board 46.

[0082] The motor 41 is a power source for the cleaning device 1. The motor 41 is an electric motor. The motor 41 is driven by power supplied from the battery pack 11. The motor 41 is an inner rotor type DC brushless motor. As shown in FIG. 9 , the motor 41 has a stator 47, a rotor 48, and a rotor shaft 49. The stator 47 has a stator core 47A having a plurality of teeth, an insulator 47B fixed to the stator core 47A, and a coil 47C wound around the teeth of the stator core 47A via the insulator 47B. The rotor 48 is disposed radially inside the stator 47. The rotor 48 has a rotor core 48A and a plurality of permanent magnets 48B embedded in the rotor core 48A. The rotor shaft 49 is fixed to the rotor 48. The rotor 48 is disposed around the rotor shaft 49. The rotor shaft 49 is long in the left-right direction. The rotor 48 and the rotor shaft 49 rotate together around the rotation axis AX of the motor 41. The rotation axis AX extends in the left-right direction. A right end of the rotor shaft 49 is rotatably supported by a bearing 50. A left end of the rotor shaft 49 is rotatably supported by a bearing 51.

[0083] The blower fan 42 generates a suction force at the air inlet 38. The blower fan 42 rotates due to the rotational force generated by the motor 41. The blower fan 42 is fixed to the right end of the rotor shaft 49. As the rotor shaft 49 rotates, the blower fan 42 rotates together with the rotor shaft 49. As the blower fan 42 rotates, a suction force is generated at the air inlet 38.

[0084] The motor housing 43 accommodates the motor 41. The motor housing 43 holds the stator 47, the bearing 50, and the bearing 51, respectively.

[0085] The base 44 is disposed around the right side of the motor housing 43. The base 44 is fixed to the motor housing 43. The base 44 supports a fan cover 45.

[0086] The fan cover 45 is arranged to cover at least a portion of the blower fan 42. The fan cover 45 is connected to the base 44. At least a portion of the fan cover 45 is arranged around the blower fan 42. At least a portion of the fan cover 45 is arranged to the right of the blower fan 42. The peripheral edge of the fan cover 45 is fixed to the base 44. The fan cover 45 has a fan intake port 45A. The fan intake port 45A is provided at the right end of the fan cover 45. When the blower fan 42 rotates, air flows into the blower fan 42 from the fan intake port 45A. The air that has passed through the blower fan 42 flows out to the left side of the base 44 through an opening provided in the base 44.

[0087] The motor housing 43 is supported by a rubber support member 52. The support member 52 is supported by the main body housing 20. The fan cover 45 is supported by a rubber support member 53. The support member 53 is supported by the main body housing 20.

[0088] The sensor board 46 detects the position of the rotor 48 in the rotational direction. The sensor board 46 is fixed to the left portion of the insulator 47B of the stator 47. The sensor board 46 has a rotation detection element supported on an annular circuit board. The rotation detection element detects the position of the permanent magnet of the rotor 48, thereby detecting the position of the rotor 48 in the rotational direction. The controller 7 supplies a drive current to the coil of the stator 47 based on the detection data of the rotation detection element.

[0089] 6, a sound absorbing member 14 is disposed around at least a portion of the periphery of the suction unit 40. An example of the sound absorbing member 14 is a porous member made of synthetic resin.

[0090] The controller 7 controls the electrically powered members mounted on the cleaning device 1. The controller 7 is operated by power supplied from the battery pack 11. The controller 7 controls at least the motor 41. The controller 7 controls the drive current supplied from the battery pack 11 to the motor 41. The controller 7 includes a board on which multiple electronic components are mounted. Examples of electronic components mounted on the board include a processor such as a CPU (Central Processing Unit), a non-volatile memory such as a ROM (Read Only Memory) or storage, a volatile memory such as a RAM (Random Access Memory), and a resistor.

[0091] The handle 5 is connected to the upper part of the main body housing 20. The handle 5 is gripped by a user. The user can move the cleaning device 1 while gripping the handle 5. An operation switch 15 is provided on the handle 5. The user can operate the operation switch 15 while gripping the handle 5. The operation switch 15 is operated by the user to switch between driving and stopping the motor 41. The operation switch 15 includes a drive switch 15A that is operated to drive the motor 41, and a stop switch 15B that is operated to stop the motor 41. When the drive switch 15A is operated while the motor 41 is stopped, the motor 41 starts. When the drive switch 15A is operated while the motor 41 is driving, the drive mode of the motor 41 is switched.

[0092] <Suction head> Fig. 12 is a perspective view from the front left showing the inside of the suction head 3 according to this embodiment. Fig. 13 is a perspective view from the front left showing part of the inside of the suction head 3 according to this embodiment, and corresponds to an enlarged view of part of Fig. 12. Fig. 14 is a front view showing part of the inside of the suction head 3 according to this embodiment, and corresponds to a view of part D in Fig. 13 as seen from the front side.

[0093] The suction head 3 comprises a base housing 30 having a suction port 38, a head housing 31 arranged above the base housing 30, a bumper 32 covering the front of the base housing 30 and the front of the head housing 31, a brush 34 arranged at the suction port 38, a drive unit 60 for rotating the brush 34, a case 70 for supporting at least a part of the drive unit 60, and a damping member 80 for damping vibrations of the cleaning device 1.

[0094] The base housing 30 and the head housing 31 are fixed together by a plurality of screws 19. The base housing 30 has a plurality of screw bosses 30A with screw holes. The head housing 31 has a plurality of screw openings in which the screws 19 are disposed. The screws 19 are inserted into the screw openings of the head housing 31 and then inserted into the screw holes of the screw bosses 30A of the base housing 30. The threaded portions of the screws 19 are coupled with the screw holes of the screw bosses 30A, thereby fixing the base housing 30 and the head housing 31 together.

[0095] The drive unit 60 is supported by the base housing 30 and the head housing 31. The drive unit 60 has a motor 61 and a power transmission mechanism 62 that transmits the rotational force generated by the motor 61 to the brushes 34. The case 70 supports the power transmission mechanism 62.

[0096] The motor 61 is an inner rotor type DC brushless motor. The motor 61 is disposed rearward of the brush 34. The motor 61 is disposed on the left side of the suction head 3. The motor 61 has an output shaft 61A. The rotation axis of the output shaft 61A extends in the left-right direction.

[0097] FIG. 15 is a perspective view of the power transmission mechanism 62 according to this embodiment, viewed from the left front. FIG. 15 corresponds to the view of FIG. 13 in which the base housing 30 and the case 70 are shown in phantom lines. The power transmission mechanism 62 transmits the rotational force of the output shaft 61A of the motor 61 to the brush 34. In this embodiment, the power transmission mechanism 62 includes a plurality of gears 63. In this embodiment, the gears 63 include a first gear 63A having a large diameter portion that meshes with the output shaft 61A, a second gear 63B that meshes with a small diameter portion of the first gear 63A, and a third gear 63C that meshes with the second gear 63B. The third gear 63C is fixed to the left end of the brush 34. When the output shaft 61A rotates, the first gear 63A rotates. When the first gear 63A rotates, the second gear 63B rotates. When the second gear 63B rotates, the third gear 63C rotates. When the third gear 63C rotates, the brush 34 rotates together with the third gear 63C.

[0098] The case 70 rotatably supports each of the multiple gears 63. The drive unit 60 has bearings 64 that rotatably support the gears 63. The bearings 64 include a first bearing 64A that rotatably supports the first gear 63A, a second bearing 64B that rotatably supports the second gear 63B, and a third bearing 64C that rotatably supports the third gear 63C. The bearings 64 are held in the case 70. The case 70 rotatably supports the gears 63 via the bearings 64.

[0099] The case 70 has a case body 71 that surrounds the multiple gears 63, a case cover 72 that covers an opening at the left end of the case body 71, and four screws 73 that fasten the case body 71 and the case cover 72 together. A screw boss 71A is provided on the outer circumferential surface of the case body 71. The screw 73 is inserted into a screw hole in the screw boss 71A through a screw opening provided at the periphery of the case cover 72. A shaft hole 71B is provided in the upper part of the case body 71, and the output shaft 61A is inserted into the shaft hole 71B.

[0100] Fig. 16 is an exploded perspective view from the front left showing part of the interior of the suction head 3 according to this embodiment. Fig. 17 is a cross-sectional view showing part of the suction head 3 according to this embodiment, which corresponds to the cross-sectional view taken along line EE in Fig. 13. Fig. 18 is a cross-sectional view showing part of the suction head 3 according to this embodiment, which corresponds to the cross-sectional view taken along line FF in Fig. 13. Fig. 19 is a cross-sectional view showing part of the suction head 3 according to this embodiment, which corresponds to the cross-sectional view taken along line GG in Fig. 13.

[0101] The base housing 30 has a base portion 300 and a protrusion portion 301 that protrudes upward from the base portion 300. The suction port 38 is provided at the front of the lower surface of the base portion 300. In a plane perpendicular to the rotation axis of the brush 34, at least a portion of the base portion 300 has an arc shape that is disposed around the upper portion of the brush 34.

[0102] The protrusion 301 is provided at the front of the left part of the base part 300. The base part 300 and the protrusion 301 are integral (a single member). Two protrusions 301 are provided. The protrusions 301 include a first protrusion 301A provided at the front end of the left part of the base part 300, and a second protrusion 301B arranged rearward of the first protrusion 301A.

[0103] The case 70 has a holding portion 74. The holding portion 74 is annular. The holding portion 74 is provided on the case main body 71. The case main body 71 and the holding portion 74 are integral (a single member). Two holding portions 74 are provided. The holding portions 74 include a first holding portion 74A provided at the front of the case main body 71 and a second holding portion 74B provided at the rear of the case main body 71.

[0104] The holding portion 74 is annular. The holding portion 74 is disposed above the protruding portion 301. The protruding portion 301 and the holding portion 74 are aligned. The first protruding portion 301A and the first holding portion 74A are aligned. The second protruding portion 301B and the second holding portion 74B are aligned.

[0105] The suction head 3 has screws 16 that secure the case 70 and the base housing 30 together. The screws 16 are fixing members that secure the case 70 and the base housing 30 together. The protrusion 301 and the retaining portion 74 each function as a screw boss. The retaining portion 74 has an opening 75 into which the screw 16 is inserted. The protrusion 301 has a screw hole 302 into which the threaded portion of the screw 16 is inserted. The screws 16 include a first screw 16A that secures the first protrusion 301A and the first retaining portion 74A together, and a second screw 16B that secures the second protrusion 301B and the second retaining portion 74B together.

[0106] Washers 17 are placed under the heads of the screws 16. The washers 17 include a first washer 17A placed on the first screw 16A and a second washer 17B placed on the second screw 16B.

[0107] The damping member 80 is disposed at the boundary between the base housing 30 and the case 70. The damping member 80 is disposed at the boundary between the protrusion 301 and the retaining portion 74. The damping member 80 is disposed around the screw 16. The damping member 80 suppresses transmission of vibrations of the case 70 to the base housing 30. The damping member 80 attenuates noise.

[0108] As shown in FIG. 19 , the brush 34 has a shaft portion 34A and a brush portion 34B fixed to the outer circumferential surface of the shaft portion 34A. A first connecting member 18 is fixed to the left end of the shaft portion 34A. The first connecting member 18 is connected to the third gear 63C via the second connecting member 29. When the brush 34 rotates and strikes the surface to be cleaned, an impact force is input to the brush 34. The impact force input to the brush 34 is transmitted to the third gear 63C via the first connecting member 18 and the second connecting member 29. The transmission of the impact force to the third gear 63C causes fluctuations in the contact force between the tooth surfaces of the multiple gears 63 (63A, 63B, 63C). When the contact force between the tooth surfaces of the multiple gears 63 fluctuates, the rotational speed of the gears 63 fluctuates. When the rotational speed of the gears 63 fluctuates, the case 70 vibrates. Vibrations of the case 70 are transmitted to the base housing 30 via the washer 17 and the screw 16. Because the base housing 30 and the head housing 31 are fixed together with a plurality of screws 19, vibrations of the base housing 30 are transmitted to the head housing 31 via the screws 19. When vibrations of the case 70 are transmitted to the base housing 30 and the head housing 31, noise (gear noise) may be generated from at least one of the base housing 30 and the head housing 31.

[0109] Furthermore, when an impact force is input to the brush 34, the case 70 vibrates without passing through the gear 63. If the vibration of the case 70 is transmitted to the base housing 30 and the head housing 31 via the washer 17 and the screw 16, noise (brush noise) may be generated from at least one of the base housing 30 and the head housing 31.

[0110] In this embodiment, the damping member 80 suppresses the transmission of vibrations of the case 70 to the base housing 30. The damping member 80 suppresses noise (gear noise and brush noise) from being generated from the base housing 30 and the head housing 31.

[0111] FIG. 20 is a cross-sectional view showing the vicinity of the first damping member 80A according to this embodiment. FIG. 21 is a perspective view showing the first damping member 80A according to this embodiment. FIG. 22 is a side view showing the first damping member 80A according to this embodiment. Each of FIGS. 20, 21, and 22 shows the first damping member 80A. The first damping member 80A and the second damping member 80B have substantially the same structure. The first damping member 80A will be described below.

[0112] The damping member 80 (first damping member 80A) is an elastic member. The damping member 80 is capable of elastic deformation. The damping member 80 is a flexible member. The damping member 80 is capable of flexibly deforming. In this embodiment, the damping member 80 is made of rubber. The damping member 80 may also be made of synthetic resin, or may be a porous member such as a sponge.

[0113] The damping member 80 is substantially cylindrical. A central axis CX of the damping member 80 extends in the vertical direction. The damping member 80 is arranged around the central axis CX. An opening 84 is provided in the center of the damping member 80 in a plane perpendicular to the central axis CX. The opening 84 is provided so as to penetrate the upper end surface and the lower end surface of the damping member 80.

[0114] The damping member 80 includes a cylindrical portion 81 , a first flange portion 82 connected to the upper end of the cylindrical portion 81 , and a second flange portion 83 connected to the lower end of the cylindrical portion 81 .

[0115] The tubular portion 81 is substantially cylindrical. The first flange portion 82 is connected to an upper end portion of the tubular portion 81. The first flange portion 82 has a tapered portion 82A that slopes upward from the upper end portion of the tubular portion 81 radially outward about the central axis CX, and a straight body portion 82B that is connected to the upper end portion of the tapered portion 82A. The second flange portion 83 is connected to a lower end portion of the tubular portion 81. The second flange portion 83 is substantially cylindrical (straight body).

[0116] In a plane perpendicular to the central axis CX, the dimension D2 (outer diameter) of the first flange portion 82 is larger than the dimension D1 (outer diameter) of the tubular portion 81. In a plane perpendicular to the central axis CX, the dimension D3 (outer diameter) of the second flange portion 83 is larger than the dimension D1 of the tubular portion 81. In a plane perpendicular to the central axis CX, the dimension D3 of the second flange portion 83 is larger than the dimension D2 of the first flange portion 82. In a direction parallel to the central axis CX, the dimension H2 (height) of the first flange portion 82 is larger than the dimension H1 (height) of the tubular portion 81. In a direction parallel to the central axis CX, the dimension H3 (height) of the second flange portion 83 is larger than the dimension H1 (height) of the tubular portion 81. In a direction parallel to the central axis CX, the dimension H3 (height) of the second flange portion 83 is smaller than the dimension H2 of the first flange portion 82.

[0117] The first flange portion 82 has a plurality of grooves 87 spaced apart in the circumferential direction. The grooves 87 are elongated in a direction parallel to the central axis CX. The grooves 87 are provided across the tapered portion 82A and the straight body portion 82B. The grooves 87 include outer grooves 87A recessed radially inward from the outer surface of the first flange portion 82, and inner grooves 87B recessed radially outward from the inner surface of the first flange portion 82. The outer grooves 87A are provided at equal intervals in the circumferential direction. The inner grooves 87B are provided at equal intervals in the circumferential direction. In the circumferential direction, an inner groove 87B is provided between a pair of outer grooves 87A. The number of outer grooves 87A is the same as the number of inner grooves 87B.

[0118] In this embodiment, the groove 87 is not provided in the second flange portion 83. However, the groove 87 may be provided in the second flange portion 83.

[0119] The damping member 80 contacts each of the retaining portion 74 of the case 70, the washer 17 of the screw 16, and the protrusion 301 of the base housing 30. At least a portion of the damping member 80 is interposed between the retaining portion 74 and the washer 17. At least a portion of the damping member 80 is interposed between the retaining portion 74 and the protrusion 301. Due to the presence of the damping member 80, the retaining portion 74 and the washer 17 are separated from each other without contacting each other. Due to the presence of the damping member 80, the retaining portion 74 and the protrusion 301 are separated from each other without contacting each other.

[0120] The washer 17 and the head of the screw 16 come into contact. The threaded portion of the screw 16 is engaged with the screw hole 302 of the protrusion 301. The screw 16 and the protrusion 301 come into contact. The base housing 30 and the head housing 31 are fixed together by a plurality of screws 19. In the vibration transmission path, the base housing 30 and the head housing 31, including the washer 17, the screw 16, and the protrusion 301, can be considered as a single member. In the following description, the case 70 including the retaining portion 74 that comes into contact with the damping member 80 will be referred to as the first member P1 as appropriate, and the washer 17, the screw 16, the base housing 30, and the head housing 31 that come into contact with the damping member 80 will be referred to as the second member P2 as appropriate.

[0121] 20, a portion of holding portion 74 is disposed around cylindrical portion 81. A portion of holding portion 74 is disposed around tapered portion 82A. Holding portion 74 has an inner surface 76 disposed around cylindrical portion 81 and a tapered surface 77 disposed around tapered portion 82A.

[0122] As shown in FIG. 20 , at least a portion of the protruding portion 301 is inserted inside the cylindrical portion 81. The protruding portion 301 has a large diameter portion 303 and a small diameter portion 304 that protrudes upward from the upper end of the large diameter portion 303. In a plane perpendicular to the central axis CX, the dimension (outer diameter) of the large diameter portion 303 is larger than the dimension (outer diameter) of the small diameter portion 304. The central axis of the large diameter portion 303 coincides with the central axis CX of the damping member 80. The central axis of the small diameter portion 304 coincides with the central axis CX of the damping member 80. A step 305 is provided between the upper end of the large diameter portion 303 and the lower end of the small diameter portion 304. At least a portion of the protruding portion 301 is disposed in the opening 84 of the damping member 80.

[0123] In this embodiment, the damping member 80 is inserted into the opening 75 from the lower side of the holding portion 74. As described above, a plurality of grooves 87 are provided in the first flange portion 82. The grooves 87 allow the first flange portion 82 to bend and deform so as to reduce its diameter. The worker assembling the suction head 3 inserts the damping member 80 into the opening 75 from the lower side of the holding portion 74 while the first flange portion 82 is in a state in which it is bent and deformed so as to reduce its diameter. After the damping member 80 is inserted into the opening 75 of the holding portion 74, the small diameter portion 304 of the protruding portion 301 is inserted into the opening 84 from its lower end. The damping member 80 is positioned on the protruding portion 301 by the step 305. The second flange portion 83 is sandwiched from above and below between the lower surface 78 of the holding portion 74 and the upper surface of the large diameter portion 303.

[0124] As shown in FIG. 20, the damping member 80 has a first contact surface 85 that contacts the first member P1 and a second contact surface 86 that contacts the second member P2.

[0125] 20, the first contact surface 85 includes an outer surface 85A of the cylindrical portion 81, an outer surface 85B (first surface) of the tapered portion 82A of the first flange portion 82, and an upper surface 85C (second surface) of the second flange portion 83. The outer surface 85A, the outer surface 85B, and the upper surface 85C face in different directions.

[0126] An outer surface 85A of the cylindrical portion 81 faces radially outward from the central axis CX. The outer surface 85A is parallel to the central axis CX. The outer surface 85A contacts the inner surface 76 of the holding portion 74.

[0127] An outer surface 85B of the tapered portion 82A is inclined upward toward the outside in the radial direction of the central axis CX. The outer surface 85B is inclined with respect to the central axis CX. The outer surface 85B comes into contact with the tapered surface 77 of the holding portion 74.

[0128] An upper surface 85C of the second flange portion 83 faces upward. The upper surface 85C of the second flange portion 83 is perpendicular to the central axis CX. The upper surface 85C contacts the lower surface 78 of the holding portion 74.

[0129] 20, the second contact surface 86 includes an inner surface 86A of the cylindrical portion 81, an upper surface 86B (third surface) of the first flange portion 82, and a lower surface 86C (fourth surface) of the second flange portion 83. The inner surface 86A, the upper surface 86B, and the lower surface 86C face in different directions.

[0130] An inner surface 86A of the cylindrical portion 81 faces inward in the radial direction of the central axis CX. The inner surface 86A is parallel to the central axis CX. The inner surface 86A contacts the outer surface of the small diameter portion 304 of the protruding portion 301.

[0131] An upper surface 86B of the first flange portion 82 faces upward. The upper surface 86B is perpendicular to the central axis CX. The upper surface 86B contacts the lower surface of the washer 17.

[0132] The lower surface 86C of the second flange portion 83 faces downward. The lower surface 86C is perpendicular to the central axis CX. The lower surface 86C contacts the upper surface of the large diameter portion 303.

[0133] 23 is a side view showing a second damping member 80B according to this embodiment. Similar to the first damping member 80A, the second damping member 80B has a cylindrical portion 81, a first flange portion 82, and a second flange portion 83. The first flange portion 82 includes a tapered portion 82A and a straight body portion 82B. A groove 87 is provided in the first flange portion 82.

[0134] In the second damping member 80B, the dimension D2 of the first flange portion 82 is larger than the dimension D1 of the cylindrical portion 81. The dimension D3 of the second flange portion 83 is larger than the dimension D1 of the cylindrical portion 81. The dimension D3 of the second flange portion 83 is larger than the dimension D2 of the first flange portion 82. The dimension H2 of the first flange portion 82 is smaller than the dimension H1 of the cylindrical portion 81. The dimension H3 of the second flange portion 83 is smaller than the dimension H1 of the cylindrical portion 81. The dimension H3 of the second flange portion 83 is smaller than the dimension H2 of the first flange portion 82.

[0135] <Cleaning device operation> When the user of the cleaning device 1 operates the drive switch 15A and starts driving the motor 41, the blower fan 42 rotates. When the user operates the drive switch 15A and starts driving the motor 61, the brush 34 rotates. The rotation of the blower fan 42 generates a suction force in the motor chamber 24. When the suction force is generated in the motor chamber 24, a suction force is generated at the suction port 38 of the suction head 3. When a suction force is generated at the suction port 38, dust present on the surface to be cleaned is sucked into the suction port 38 together with air.

[0136] A user can move cleaning device 1 while holding handle 5. If the surface to be cleaned includes a carpet, brush 34 rotates to scrape off dust present on the carpet.

[0137] Dust sucked into the suction port 38 is sent to the collection chamber 23 via the connecting pipe 35, the connection pipe 4, and the connecting pipe 28. A dust bag 9 is disposed in the collection chamber 23. The dust bag 9 is connected to the connecting pipe 28 in the collection chamber 23. The dust sent to the collection chamber 23 is collected in the dust bag 9. Air that passes through the dust bag 9 flows into the flow path 25 via the filter 26. Dust that is not completely collected by the dust bag 9 is collected in the filter 26. The air that flows into the flow path 25 passes through the sponge sheet 27 and then flows into the motor chamber 24. The air that flows into the motor chamber 24 flows into the blower fan 42 through a fan intake port in the fan cover 45. The air that passes through the blower fan 42 flows out to the left side of the base 44 through an opening provided in the base 44. The air that flows out to the left side of the base 44 is discharged to the outside of the body 2 through the exhaust port 8.

[0138] As described above, when the brush 34 rotates and strikes the surface to be cleaned, an impact force is input to the brush 34. The impact force input to the brush 34 causes the case 70, which is the first member P1, to vibrate. In this embodiment, the damping member 80 is interposed between the first member P1 including the case 70 and the second member P2 including the base housing 30 and the head housing 31. The damping member 80 damps the vibration transmitted from the first member P1 to the second member P2. By suppressing the vibration of the second member P2, noise generated from the suction head 3 is suppressed.

[0139] <Effects> As described above, in this embodiment, the damping member 80 damps vibrations of the suction head 3 having the first member P1 and the second member P2. The damping member 80 includes a first contact surface 85 that contacts the first member P1 and a second contact surface 86 that contacts the second member P2. The first contact surface 85 contacts the first member P1 and includes at least two contact surfaces that face in different directions. In this embodiment, the first contact surface 85 contacts the first member P1 and includes an outer surface 85A, an outer surface 85B, and an upper surface 85C that face in different directions.

[0140] In the above configuration, the first contact surface 85 includes outer surfaces 85A, 85B, and upper surface 85C that face in different directions, which increases the contact area between the damping member 80 and the first member P1, allowing the damping member 80 to effectively damp vibrations. Since vibrations are damped, noise generated from the suction head 3 is suppressed.

[0141] In this embodiment, the suction head 3 includes a base housing 30 having a suction port 38, a brush 34 disposed in the suction port 38, a drive unit 60 that rotates the brush 34, a case 70 that supports at least a portion of the drive unit 60, and a damping member 80. The first member P1 includes the case 70. The second member P2 includes the base housing 30 and the head housing 31.

[0142] As described above, when the brush 34 rotates and strikes the surface to be cleaned, an impact force is input to the brush 34. The impact force input to the brush 34 is transmitted to the third gear 63C via the first connecting member 18 and the second connecting member 29. The transmission of the impact force to the third gear 63C causes fluctuations in the contact force between the tooth surfaces of the multiple gears 63 (63A, 63B, 63C). When the contact force between the tooth surfaces of the multiple gears 63 fluctuates, the rotational speed of the gears 63 fluctuates. When the rotational speed of the gears 63 fluctuates, the case 70 vibrates. The vibration of the case 70 is transmitted to the base housing 30 via the washer 17 and the screw 16. Because the base housing 30 and the head housing 31 are fixed together with the multiple screws 19, the vibration of the base housing 30 is transmitted to the head housing 31 via the screw 19. When vibrations of the case 70 are transmitted to the base housing 30 and the head housing 31, noise (gear noise) may be generated from at least one of the base housing 30 and the head housing 31.

[0143] Furthermore, when an impact force is input to the brush 34, the case 70 vibrates without passing through the gear 63. If the vibration of the case 70 is transmitted to the base housing 30 and the head housing 31 via the washer 17 and the screw 16, noise (brush noise) may be generated from at least one of the base housing 30 and the head housing 31.

[0144] In this embodiment, the vibration source is the first member P1 including the case 70. If the vibration of the case 70 is transmitted to the second member P2 including the base housing 30 and the head housing 31, noise (gear noise, brush noise) may be generated.

[0145] When the first member P1 is a vibration source, the damping member 80 can damp vibrations transmitted from the first member P1 to the second member P2. Since the vibration of the second member P2 is suppressed, noise generated from the suction head 3 is suppressed. Because the first contact surface 85 includes outer surfaces 85A, 85B, and an upper surface 85C that face in different directions, even if the first member P1 vibrates in different directions, the damping member 80 can effectively damp vibrations of the first member P1 in multiple vibration directions. Since the vibration of the second member P2 is suppressed, noise generated from the suction head 3 is suppressed.

[0146] That is, when the case 70 of the drive unit 60 is a vibration source, the damping member 80 can dampen the vibration transmitted from the case 70 to the base housing 30 and the head housing 31. Since the vibration of the base housing 30 and the head housing 31 is suppressed, the noise generated from the suction head 3 is suppressed.

[0147] In addition, when the second member P2 is a vibration source, the damping member 80 can damp vibrations transmitted from the second member P2 to the first member P1. Since the vibration of the first member P1 is suppressed, noise generated from the suction head 3 is suppressed. Since the first contact surface 85 includes the outer surface 85A, the outer surface 85B, and the upper surface 85C that face in different directions, the damping member 80 can effectively damp vibrations in multiple vibration directions input to the first member P1, even if the directions of the vibrations input to the first member P1 are different from each other. Since the vibration of the first member P1 is suppressed, noise generated from the suction head 3 is suppressed.

[0148] In this embodiment, the second contact surface 86 includes at least two contact surfaces that contact the second member P2 and face in different directions from each other. In this embodiment, the second contact surface 86 includes an inner surface 86A, an upper surface 86B, and a lower surface 66C that contact the second member P2 and face in different directions from each other.

[0149] In the above configuration, when the first member P1 is the vibration source, the second contact surface 86 includes an inner surface 86A, an upper surface 86B, and a lower surface 65C that face in different directions, so that even if the directions of the vibrations input to the second member P2 are different from each other, the damping member 80 can effectively damp vibrations in multiple vibration directions.

[0150] Furthermore, when the second member P2 is the vibration source, since the second contact surface 86 includes an inner surface 86A, an upper surface 86B, and a lower surface 65C that face in different directions, even if the second member P2 vibrates in different directions, the damping member 80 can effectively damp vibrations in multiple vibration directions.

[0151] In this embodiment, the damping member 80 includes a cylindrical portion 81. The first contact surface 85 includes an outer surface 85A of the cylindrical portion 81. The second contact surface 86 includes an inner surface 86A of the cylindrical portion 81.

[0152] In the above configuration, when the first member P1 contacts the outer surface 85A of the tubular portion 81 and the second member P2 contacts the inner surface 86A of the tubular portion 81, the damping member 80 can damp vibrations transmitted from one of the first member P1 and the second member P2 to the other member.

[0153] In this embodiment, the second contact surface 86 includes an upper surface 86B and a lower surface 86C of the damping member 80.

[0154] In the above configuration, when the second member P2 contacts each of the upper surface 86B and the lower surface 86C of the damping member 80, the damping member 80 can damp vibrations transmitted from the first member P1 to the second member P2.

[0155] In this embodiment, the damping member 80 includes an opening 84 in which at least a portion of the second member P2 is disposed.

[0156] In the above configuration, when at least a portion of the second member P2 is disposed in the opening 84 of the damping member 80, the damping member 80 can damp vibrations transmitted from the first member P1 to the second member P2.

[0157] In this embodiment, the damping member 80 includes a cylindrical portion 81, a first flange portion 82 connected to one end of the cylindrical portion 81, and a second flange portion 83 connected to the other end of the cylindrical portion 81. The first contact surface 85 includes an outer surface 85A of the cylindrical portion 81, an outer surface 85B which is a first surface of the first flange portion 82, and an upper surface 85C which is a second surface of the second flange portion 83. The second contact surface 86 includes an inner surface 86A of the cylindrical portion 81, an upper surface 86B which is a third surface of the first flange portion 82, and a lower surface 86C which is a fourth surface of the second flange portion 83.

[0158] In the above configuration, the damping member 80 can damp vibrations transmitted from the first member P1 to the second member P2.

[0159] In this embodiment, the first flange portion 82 has a plurality of grooves 87 spaced apart in the circumferential direction.

[0160] In the above configuration, the grooves 87 allow the first flange portion 82 to easily flex and deform in the radial direction, so that the damping member 80 can effectively damp vibrations. Furthermore, when the damping member 80 is inserted into the opening 75 provided in the case 70, which is the first member P1, from below the holding portion 74, the first flange portion 82 easily flexes and deforms so as to reduce its diameter, so that the damping member 80 can be easily inserted into the opening 75 from below the holding portion 74.

[0161] The groove 87 may be provided in the second flange portion 83. When the damping member 80 is inserted into the opening 75 from above the holding portion 74, the second flange portion 83 is likely to bend and deform so as to reduce in diameter, making it easier to insert the damping member 80 into the opening 75 from above the holding portion 74.

[0162] In this embodiment, the damping member 80 is disposed around the screw 16, which is a fixing member that fixes the first member P1 and the second member P2.

[0163] In the above configuration, in a state in which the first member P1 and the second member P2 are fixed by the screws 16, the damping member 80 can damp vibrations transmitted from the first member P1 to the second member P2.

[0164] In this embodiment, the damping member 80 has a cylindrical portion 81. The case 70 has a holding portion 74 arranged around the cylindrical portion 81. The base housing 30 has a protrusion 301 that is inserted into the inside of the cylindrical portion 81.

[0165] In the above configuration, the cylindrical portion 81 of the damping member 80 can damp vibrations transmitted from the holding portion 74 of the case 70 to the protruding portion 301 of the base housing 30. Since the vibrations of the base housing 30 are suppressed, the noise generated from the suction head 3 is also suppressed.

[0166] In this embodiment, the drive unit 60 includes a motor 61 and a gear 63 that transmits the rotational force generated by the motor 61 to the brush 34. The case 70 supports the gear 63.

[0167] In the above configuration, when the case 70 of the gear 63 is a vibration source, the damping member 80 can damp the vibration transmitted from the case 70 to the base housing 30. Since the vibration of the base housing 30 is suppressed, the noise generated from the suction head 3 is suppressed.

[0168] In this embodiment, the suction head 3 includes a base housing 30 having a suction port 38, a brush 34 disposed at the suction port 38, a power transmission mechanism 62 that transmits rotational force generated by a motor 61 to the brush 34, a case 70 that supports the power transmission mechanism 62, and a damping member 80. The first member P1 includes the case 70, and the second member P2 includes the base housing 30.

[0169] In the above configuration, when the case 70 of the power transmission mechanism 62 is a vibration source, the damping member 80 can dampen the vibration transmitted from the case 70 to the base housing 30 and the head housing 31. Since the vibration of the base housing 30 and the head housing 31 is suppressed, the noise generated from the suction head 3 is suppressed.

[0170] [Second embodiment] A second embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiment will be denoted by the same reference numerals, and the description of those components will be simplified or omitted.

[0171] FIG. 24 is a perspective view of the suction head 103 according to this embodiment, viewed from the front left. FIG. 25 is a perspective view of the interior of the suction head 103 according to this embodiment, viewed from the front left. FIG. 26 is a cross-sectional view of the interior of the suction head 103 according to this embodiment, viewed from the front left, corresponding to the cross-sectional view along line HH in FIG. 25. FIG. 27 is a cross-sectional view of the interior of the suction head 103 according to this embodiment, viewed from the front left, corresponding to the cross-sectional view along line II in FIG. 25. FIG. 28 is a cross-sectional view of the interior of the suction head 103 according to this embodiment, viewed from the front left, corresponding to the cross-sectional view along line JJ in FIG. 25. FIG. 29 is a perspective view of a portion of the interior of the suction head 103 according to this embodiment, viewed from the front left, corresponding to an enlarged view of a portion of FIG. 25. FIG. 30 is an exploded perspective view of a portion of the interior of the suction head 103 according to this embodiment, viewed from the front left, corresponding to the exploded perspective view in FIG. 29. FIG. 31 is a front view of a portion of the interior of the suction head 103 according to this embodiment, corresponding to a view of part K in FIG. 25 from the front side. FIG. 32 is a cross-sectional view showing a portion of the suction head 103 according to this embodiment, and corresponds to the cross-sectional view taken along line LL in FIG. 29. FIG. 33 is a cross-sectional view showing a portion of the suction head 103 according to this embodiment, and corresponds to the cross-sectional view taken along line MM in FIG. 29. FIG. 34 is a cross-sectional view showing the vicinity of the damping member 180 according to this embodiment, and corresponds to an enlarged view of a portion of FIG. 33. FIG. 35 is a perspective view showing the damping member 180 according to this embodiment. FIG. 36 is a side view showing the damping member 180 according to this embodiment.

[0172] The suction head 103 comprises a base housing 130 having an suction port 138, a head housing 131 arranged above the base housing 130, a bumper 132 covering the front of the base housing 130 and the front of the head housing 131, a brush 134 arranged at the suction port 138, a connecting pipe 135 connected to the suction port 138, running wheels 136 and auxiliary wheels 137 provided at the bottom of the base housing 130, a drive unit 160 that rotates the brush 134, a case 170 that supports at least a portion of the drive unit 160, and a damping member 180 for damping vibrations of the suction head 103.

[0173] In this embodiment, the controller 107 is disposed in the suction head 103. A battery mounting section 110 to which a battery pack 111 is attached is disposed outside the suction head 103. The battery mounting section 110 is disposed above the suction head 103.

[0174] The drive unit 160 is supported by the base housing 130 and the head housing 131. The drive unit 160 has a motor 161 and a power transmission mechanism 162 that transmits the rotational force generated by the motor 161 to the brush 134. The case 170 supports the motor 161.

[0175] The motor 161 is an inner rotor type DC brushless motor. The motor 161 is disposed rearward of the brushes 134. The motor 161 has an output shaft 163. In this embodiment, the output shaft 163 is a rotor shaft of the motor 161. The rotation axis of the output shaft 163 extends in the left-right direction. As shown in FIG. 26 , a right portion of the output shaft 163 is rotatably held by a bearing 163R. A left portion of the output shaft 163 is rotatably held by a bearing 163L. The bearings 163R and 163L are held by a case 170.

[0176] In this embodiment, the blower fan 142 is fixed to the right end of the output shaft 163. A fan cover 145 is arranged around the blower fan 142. The blower fan 142 generates a suction force at the air inlet 138. The blower fan 142 rotates by the rotational force generated by the motor 161. When the output shaft 163 rotates, the blower fan 142 rotates together with the output shaft 163. When the blower fan 142 rotates, a suction force is generated at the air inlet 138.

[0177] The power transmission mechanism 162 transmits the rotational force of the output shaft 163 of the motor 61 to the brush 134. In this embodiment, the power transmission mechanism 162 includes a belt 164 and a pulley 165.

[0178] The pulley 165 is fixed to the left end of the brush 134. The pulley 165 is housed in a case 90. The case 90 supports the pulley 165. As shown in FIG. 27 , a bearing holding member 91 is arranged inside the case 90. The bearing holding member 91 is a rod-shaped member. The bearing holding member 91 is fixed to the case 90. A bearing 92 is arranged around the bearing holding member 91. The bearing holding member 91 holds the bearing 92. The pulley 165 is supported by the bearing 92. The case 90 rotatably supports the pulley 165 via the bearing holding member 91 and the bearing 92.

[0179] The belt 164 is circular. The belt 164 is a so-called endless belt. The belt 164 is looped around the left end of the output shaft 163 and the pulley 165. When the output shaft 163 rotates, the belt 164 rotates. When the belt 164 rotates, the pulley 165 rotates. When the pulley 165 rotates, the brush 134 rotates together with the pulley 165.

[0180] The case 170 is supported by the motor 161. The case 170 has a so-called half-split structure. As shown in Figure 29, the case 170 includes a lower case 171 and an upper case 172 disposed above the lower case 171.

[0181] The base housing 130 has a base portion 1300 and a plurality of protrusions 1301 protruding upward from the base portion 1300. Four protrusions 1301 are provided around the periphery of the case 170.

[0182] Case 170 has holding portions 174. Holding portions 174 are annular. Four holding portions 174 are provided on the periphery of case 170. As shown in FIG. 29 , in this embodiment, holding portions 174 are formed by combining lower holding portions 174A provided on the periphery of lower case 171 with upper holding portions 174B provided on the periphery of upper case 172.

[0183] The holding portion 174 is annular. As described above, four protrusions 1301 and four holding portions 174 are provided. The four protrusions 1301 and the four holding portions 174 are aligned, respectively. The protrusions 1301 are inserted inside the holding portions 174.

[0184] The suction head 103 has a screw 116 that fixes the case 170 and the base housing 130. The screw 116 is a fixing member that fixes the case 170 and the base housing 130. The protrusion 1301 and the retaining portion 174 each function as a screw boss. The retaining portion 174 has an opening 175 into which the screw 116 is inserted. The protrusion 1301 has a screw hole 1302 into which the threaded portion of the screw 116 is inserted. A washer 117 is disposed under the head of the screw 116.

[0185] The damping member 180 is disposed at the boundary between the base housing 130 and the case 170. The damping member 180 is disposed at the boundary between the protrusion 1301 and the holding portion 174. The damping member 180 is disposed around the screw 116. The damping member 180 suppresses transmission of vibrations of the case 170 to the base housing 130.

[0186] The damping member 180 is an elastic member. The damping member 180 is capable of elastic deformation. The damping member 180 is a flexible member. The damping member 180 is capable of flexibly deforming. In this embodiment, the damping member 180 is made of rubber. The damping member 180 may be made of synthetic resin or a porous member such as a sponge.

[0187] The damping member 180 is substantially cylindrical. A central axis CX of the damping member 180 extends in the up-down direction. The damping member 180 is disposed around the central axis CX. An opening 184 is provided in the center of the damping member 180 in a plane perpendicular to the central axis CX. The opening 184 is provided so as to penetrate the upper end surface and the lower end surface of the damping member 180.

[0188] The damping member 180 includes a cylindrical portion 181 , a first flange portion 182 connected to the upper end of the cylindrical portion 181 , and a second flange portion 183 connected to the lower end of the cylindrical portion 181 .

[0189] The tubular portion 181 is substantially cylindrical. The first flange portion 182 is connected to the upper end of the tubular portion 181. The first flange portion 182 has a tapered portion 182A that slopes upward from the upper end of the tubular portion 181 radially outward about the central axis CX, and a straight body portion 182B that is connected to the upper end of the tapered portion 182A. The second flange portion 183 is connected to the lower end of the tubular portion 181. The second flange portion 183 has a tapered portion 183A that slopes downward from the lower end of the tubular portion 181 radially outward about the central axis CX, and a straight body portion 183B that is connected to the lower end of the tapered portion 183A.

[0190] In a plane perpendicular to the central axis CX, the dimension D2 (outer diameter) of the first flange portion 182 and the dimension D3 (outer diameter) of the second flange portion 183 are equal. In a plane perpendicular to the central axis CX, the dimension D2 of the first flange portion 182 and the dimension D3 of the second flange portion 83 are greater than the dimension D1 of the cylindrical portion 81. In a direction parallel to the central axis CX, the dimension H2 (height) of the first flange portion 82 and the dimension H3 (height) of the second flange portion 183 are equal. In a direction parallel to the central axis CX, the dimension H2 of the first flange portion 182 and the dimension H3 of the second flange portion 83 are smaller than the dimension H1 (height) of the cylindrical portion 81.

[0191] The first flange portion 182 has a plurality of grooves 187 spaced apart in the circumferential direction. The grooves 187 are elongated in a direction parallel to the central axis CX. The grooves 187 are provided across the tapered portion 182A and the straight body portion 182B. The grooves 187 include outer grooves 187A recessed radially inward from the outer surface of the first flange portion 182, and inner grooves 187B recessed radially outward from the inner surface of the first flange portion 182. The outer grooves 187A are provided at equal intervals in the circumferential direction. The inner grooves 187B are provided at equal intervals in the circumferential direction. In the circumferential direction, an inner groove 187B is provided between a pair of outer grooves 187A. The number of outer grooves 187A is the same as the number of inner grooves 187B.

[0192] The second flange portion 183 has a plurality of grooves 188 spaced apart in the circumferential direction. The grooves 188 are elongated in a direction parallel to the central axis CX. The grooves 188 are provided across the tapered portion 183A and the straight body portion 183B. The grooves 188 include outer grooves 188A recessed radially inward from the outer surface of the second flange portion 183, and inner grooves 188B recessed radially outward from the inner surface of the second flange portion 183. The outer grooves 188A are provided at equal intervals in the circumferential direction. The inner grooves 188B are provided at equal intervals in the circumferential direction. In the circumferential direction, an inner groove 188B is provided between a pair of outer grooves 188A. The number of outer grooves 188A is the same as the number of inner grooves 188B.

[0193] In this embodiment, the shape and size of the first flange portion 182 are the same as the shape and size of the second flange portion 183. The damping member 180 has a vertically symmetrical structure.

[0194] The damping member 180 contacts each of the retaining portion 174 of the case 170, the washer 117 of the screw 116, and the protrusion 1301 of the base housing 130. At least a portion of the damping member 180 is interposed between the retaining portion 174 and the washer 117. At least a portion of the damping member 180 is interposed between the retaining portion 174 and the protrusion 1301. Due to the presence of the damping member 180, the retaining portion 174 and the washer 117 are separated from each other without contacting each other. Due to the presence of the damping member 180, the retaining portion 174 and the protrusion 1301 are separated from each other without contacting each other.

[0195] The washer 117 and the head of the screw 116 are in contact with each other. The threaded portion of the screw 116 is coupled to the screw hole 1302 of the protrusion 1301. The screw 116 and the protrusion 1301 are in contact with each other. In the vibration transmission path, the washer 117, the screw 116, and the protrusion 1301 can be considered as a single member. In the following description, the retaining portion 174 that contacts the damping member 180 will be referred to as the first member Q1 as appropriate, and the washer 117, the screw 116, and the protrusion 1301 that contact the damping member 180 will be referred to as the second member Q2 as appropriate.

[0196] 34, a portion of holding portion 174 is disposed around cylindrical portion 181. A portion of holding portion 174 is disposed around tapered portion 182A. A portion of holding portion 174 is disposed around tapered portion 183A. Holding portion 174 has inner surface 176 disposed around cylindrical portion 181, tapered surface 177 disposed around tapered portion 182A, and tapered surface 178 disposed around tapered portion 183A.

[0197] As shown in FIG. 34 , at least a portion of the protruding portion 1301 is inserted inside the cylindrical portion 181. The protruding portion 1301 has a large diameter portion 1303 and a small diameter portion 1304 that protrudes upward from the upper end of the large diameter portion 1303. In a plane perpendicular to the central axis CX, the dimension (outer diameter) of the large diameter portion 1303 is larger than the dimension (outer diameter) of the small diameter portion 1304. The central axis of the large diameter portion 1303 coincides with the central axis CX of the damping member 180. The central axis of the small diameter portion 1304 coincides with the central axis CX of the damping member 180. A step 1305 is provided between the upper end of the large diameter portion 1303 and the lower end of the small diameter portion 1304. At least a portion of the protruding portion 1301 is disposed in the opening 184 of the damping member 180.

[0198] In this embodiment, the damping member 180 is inserted into the opening 175 from the lower side or the upper side of the holding portion 174. As described above, the first flange portion 182 has a plurality of grooves 187, and the second flange portion 183 has a plurality of grooves 188. The grooves 187 allow the first flange portion 182 to bend and deform so as to reduce its diameter. The grooves 188 allow the second flange portion 183 to bend and deform so as to reduce its diameter. The worker assembling the suction head 103 inserts the damping member 180 into the opening 175 from the lower side of the holding portion 174 while the first flange portion 182 is being bent and deformed so as to reduce its diameter. Alternatively, the worker assembling the suction head 103 may insert the damping member 180 into the opening 175 from the upper side of the holding portion 174 while the second flange portion 183 is being bent and deformed so as to reduce its diameter. After the damping member 180 is inserted into the opening 175 of the holding portion 174, the small diameter portion 1304 of the protruding portion 1301 is inserted into the opening 184 from the lower end of the opening 184. The damping member 180 is positioned on the protruding portion 1301 by a step 1305. The first flange portion 182 is sandwiched from above and below by the tapered surface 177 of the holding portion 174 and the lower surface of the washer 117. The second flange portion 183 is sandwiched from above and below by the tapered surface 178 of the holding portion 174 and the upper surface of the large diameter portion 1303.

[0199] As shown in FIG. 34, the damping member 180 has a first contact surface 185 that contacts the first member Q1 and a second contact surface 186 that contacts the second member Q2.

[0200] 34, first contact surface 185 includes outer surface 185A of tubular portion 181, outer surface 185B (first surface) of tapered portion 182A of first flange portion 182, and outer surface 185C (second surface) of tapered portion 183A of second flange portion 183. Outer surface 185A, outer surface 185B, and outer surface 185C face in different directions.

[0201] An outer surface 185A of the cylindrical portion 181 faces radially outward from the central axis CX. The outer surface 185A is parallel to the central axis CX. The outer surface 185A contacts the inner surface 176 of the holding portion 174.

[0202] An outer surface 185B of the tapered portion 182A is inclined upward toward the outside in the radial direction of the central axis CX. The outer surface 185B is inclined with respect to the central axis CX. The outer surface 185B comes into contact with the tapered surface 177 of the holding portion 174.

[0203] An outer surface 185C of the tapered portion 183A is inclined downward toward the outside in the radial direction of the central axis CX. The outer surface 185C is inclined with respect to the central axis CX. The outer surface 185C comes into contact with the tapered surface 178 of the holding portion 174.

[0204] 34, the second contact surface 186 includes an inner surface 186A of the cylindrical portion 181, an upper surface 186B (third surface) of the first flange portion 182, and a lower surface 186C (fourth surface) of the second flange portion 183. The inner surface 186A, the upper surface 186B, and the lower surface 186C face in different directions.

[0205] An inner surface 186A of the cylindrical portion 181 faces inward in the radial direction of the central axis CX. The inner surface 186A is parallel to the central axis CX. The inner surface 186A contacts the outer surface of the small diameter portion 1304 of the protruding portion 1301.

[0206] An upper surface 186B of the first flange portion 182 faces upward. The upper surface 186B is perpendicular to the central axis CX. The upper surface 186B contacts the lower surface of the washer 17.

[0207] The lower surface 186C of the second flange portion 183 faces downward. The lower surface 186C is perpendicular to the central axis CX. The lower surface 186C contacts the upper surface of the large diameter portion 303.

[0208] As described above, in this embodiment, the damping member 180 damps vibrations of the suction head 103, which has a first member Q1 and a second member Q2. The damping member 180 includes a first contact surface 185 that contacts the first member Q1 and a second contact surface 186 that contacts the second member Q2. The first contact surface 185 contacts the first member Q1 and includes outer surfaces 185A, 185B, and 185C that face in different directions.

[0209] In the above configuration, first contact surface 185 includes outer surfaces 185A, 185B, and 185C that face in different directions, which increases the contact area between damping member 180 and first member Q1, allowing damping member 180 to effectively damp vibrations. Because vibrations are damped, noise generated from suction head 103 is suppressed.

[0210] When the first member Q1 is a vibration source, the damping member 180 can damp vibrations transmitted from the first member Q1 to the second member Q2. Since the vibration of the second member Q2 is suppressed, noise generated from the suction head 103 is suppressed. Because the first contact surface 185 includes outer surfaces 185A, 185B, and 185C facing in different directions, even if the first member Q1 vibrates in different directions, the damping member 180 can effectively damp vibrations of the first member Q1 in multiple vibration directions. Since the vibration of the second member Q2 is suppressed, noise generated from the suction head 103 is suppressed.

[0211] In addition, when the second member Q2 is a vibration source, the damping member 180 can damp vibrations transmitted from the second member Q2 to the first member Q1. Since the vibration of the first member Q1 is suppressed, noise generated from the suction head 103 is suppressed. Since the first contact surface 185 includes outer surfaces 185A, 185B, and 185C facing in different directions, the damping member 180 can effectively damp vibrations in multiple vibration directions input to the first member Q1, even if the directions of the vibrations input to the first member Q1 are different from each other. Since the vibration of the first member Q1 is suppressed, noise generated from the suction head 103 is suppressed.

[0212] In this embodiment, the second contact surface 186 contacts the second member Q2 and includes an inner surface 186A, an upper surface 186B, and a lower surface 186C that face in different directions.

[0213] In the above configuration, when the first member Q1 is the vibration source, the second contact surface 186 includes an inner surface 186A, an upper surface 186B, and a lower surface 186C that face in different directions, so that even if the directions of the vibrations input to the second member Q2 are different from each other, the damping member 180 can effectively damp vibrations in multiple vibration directions.

[0214] Furthermore, when the second member Q2 is the vibration source, since the second contact surface 186 includes an inner surface 186A, an upper surface 186B, and a lower surface 186C that face in different directions, even if the second member Q2 vibrates in different directions, the damping member 180 can effectively damp vibrations in multiple vibration directions.

[0215] In this embodiment, the damping member 180 includes a cylindrical portion 181. The first contact surface 185 includes an outer surface 185A of the cylindrical portion 181. The second contact surface 186 includes an inner surface 186A of the cylindrical portion 181.

[0216] In the above configuration, when the first member Q1 contacts the outer surface 185A of the cylindrical portion 181 and the second member Q2 contacts the inner surface 186A of the cylindrical portion 181, the damping member 180 can damp vibrations transmitted from the first member Q1 to the second member Q2.

[0217] In this embodiment, the second contact surface 186 includes an upper surface 186B and a lower surface 186C of the damping member 180.

[0218] In the above configuration, when the second member Q2 contacts each of the upper surface 186B and the lower surface 186C of the damping member 180, the damping member 180 can damp vibrations transmitted from the first member Q1 to the second member Q2.

[0219] In this embodiment, the damping member 180 includes an opening 184 in which at least a portion of the second member Q2 is disposed.

[0220] In the above configuration, when at least a portion of the second member Q2 is disposed in the opening 184 of the damping member 180, the damping member 180 can damp vibrations transmitted from the first member Q1 to the second member Q2.

[0221] In this embodiment, damping member 180 includes a cylindrical portion 181, a first flange portion 182 connected to one end of cylindrical portion 181, and a second flange portion 183 connected to the other end of cylindrical portion 181. First contact surface 185 includes an outer surface 185A of cylindrical portion 181, an outer surface 185B which is a first surface of first flange portion 182, and an outer surface 185C which is a second surface of second flange portion 183. Second contact surface 186 includes an inner surface 186A of cylindrical portion 181, an upper surface 186B which is a third surface of first flange portion 182, and a lower surface 186C which is a fourth surface of second flange portion 183.

[0222] In the above configuration, the damping member 180 can damp vibrations transmitted from the first member Q1 to the second member Q2.

[0223] In this embodiment, the first flange portion 182 has a plurality of grooves 187 spaced apart in the circumferential direction. The second flange portion 183 has a plurality of grooves 188 spaced apart in the circumferential direction.

[0224] In the above configuration, the grooves 187 allow the first flange portion 182 to easily flex and deform in the radial direction, thereby enabling the damping member 180 to effectively damp vibrations. Furthermore, when the damping member 180 is inserted into the opening 175 provided in the case 170, which is the first member Q1, from the lower side of the holding portion 174, the first flange portion 182 easily flexes and deforms so as to reduce its diameter, making it easier to insert the damping member 180 into the opening 175 from the lower side of the holding portion 174.

[0225] Furthermore, in the above configuration, the grooves 188 allow the second flange portion 183 to easily flex and deform in the radial direction, so that the damping member 180 can effectively damp vibrations. Furthermore, when the damping member 180 is inserted into the opening 175 provided in the case 170, which is the first member Q1, from above the holding portion 174, the second flange portion 183 easily flexes and deforms so as to reduce its diameter, so that the damping member 180 can be easily inserted into the opening 175 from above the holding portion 174.

[0226] In this embodiment, the damping member 180 is disposed around the screw 116, which is a fixing member that fixes the first member Q1 and the second member Q2.

[0227] In the above configuration, when the first member Q1 and the second member Q2 are fixed by the screws 116, the damping member 180 can damp vibrations transmitted from the first member Q1 to the second member Q2.

[0228] In this embodiment, the damping member 180 has a cylindrical portion 181. The case 170 has a holding portion 174 arranged around the cylindrical portion 181. The base housing 130 has a protrusion 1301 that is inserted into the inside of the cylindrical portion 181.

[0229] In the above configuration, cylindrical portion 181 of damping member 180 can damp vibrations transmitted from holding portion 174 of case 170 to protruding portion 1301 of base housing 130. Since vibrations of base housing 130 are suppressed, noise generated from suction head 103 is also suppressed.

[0230] In this embodiment, the drive unit 60 includes a motor 161. The case 170 supports the motor 161.

[0231] In the above configuration, when the case 170 of the motor 161 is a vibration source, the damping member 180 can damp the vibration transmitted from the case 170 to the base housing 130. Since the vibration of the base housing 130 is suppressed, the noise generated from the suction head 103 is suppressed.

[0232] In this embodiment, the suction head 103 includes a base housing 130 having a suction port 138, a brush 134 disposed at the suction port 138, a power transmission mechanism 162 that transmits rotational force generated by a motor 161 to the brush 134, a case 170 that supports the motor 161, and a damping member 180. A first member Q1 includes the case 170, and a second member Q2 includes the base housing 130.

[0233] In the above configuration, when the case 170 of the motor 161 is a vibration source, the damping member 180 can damp the vibration transmitted from the case 170 to the base housing 130. Since the vibration of the base housing 130 is suppressed, the noise generated from the suction head 103 is suppressed.

[0234] [Third embodiment] A third embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description of these components will be simplified or omitted.

[0235] The third embodiment is a modification of the second embodiment. Figure 37 is a perspective view from the front left showing part of the interior of suction head 203 according to this embodiment. Figure 38 is an exploded perspective view from the front left showing part of the interior of suction head 203 according to this embodiment. Figure 39 is a cross-sectional view showing part of suction head 203 according to this embodiment, corresponding to the cross-sectional view taken along line NN in Figure 37.

[0236] The suction head 203 includes a drive unit 260 that rotates the brush 134 , a case 170 that supports at least a part of the drive unit 260 , and a damping member 180 that damps vibrations of the suction head 203 .

[0237] The drive unit 260 includes a motor 261 and a power transmission mechanism 262 that transmits the rotational force generated by the motor 261 to the brush 134. The case 170 supports the motor 261.

[0238] The motor 261 is an inner rotor type DC brushless motor. As shown in FIG. 39 , the motor 261 includes a stator 247, a rotor 248, and a rotor shaft 263. The stator 247 includes a stator core 247A having a plurality of teeth, an insulator 247B fixed to the stator core 247A, and a coil 247C wound around the teeth of the stator core 247A via the insulator 247B. The rotor 248 is disposed radially inside the stator 247. The rotor 248 includes a rotor core 248A and a plurality of permanent magnets 248B embedded in the rotor core 248A. The rotor shaft 263 is fixed to the rotor 248. The rotor 248 is disposed around the rotor shaft 263. The rotor shaft 263 is elongated in the left-right direction. The rotor 248 and the rotor shaft 263 rotate together around the rotation axis of the motor 261. The rotation axis extends in the left-right direction.

[0239] In this embodiment, cooling fan 250 is fixed to the left end of rotor shaft 263. Intake port 170A is formed in the center of case 170 in the left-right direction, and exhaust port 170B is formed in the left part of case 170. Exhaust port 170B is arranged around cooling fan 250. Cooling fan 250 rotates as rotor shaft 263 rotates. As cooling fan 250 rotates, air flows into the inside of case 170 from intake port 170A. The air that flows into the inside of case 170 from intake port 170A flows around motor 261 and is then discharged from exhaust port 170B. Motor 261 is cooled by the air flowing around motor 261.

[0240] As shown in FIG. 39 , an output shaft 264 is fixed to the left end of the rotor shaft 263. The output shaft 264 has a hole into which the left end of the rotor shaft 263 is inserted. The rotor shaft 263 and the output shaft 264 are fixed together by inserting the left end of the rotor shaft 263 into the hole of the output shaft 264. The rotor shaft 263 and the output shaft 264 may be integral (a single member). The right portion of the rotor shaft 263 is rotatably held by a bearing 263R. The left portion of the output shaft 264 is rotatably held by a bearing 263L. The bearings 263R and 263L are held by a case 170.

[0241] The power transmission mechanism 262 transmits the rotational force of the rotor shaft 263 of the motor 261 to the brushes 134. In this embodiment, the power transmission mechanism 262 has an output shaft 264 connected to the rotor shaft 263 of the motor 261, an intermediate shaft 265 connected to the brushes 134 via the belt 164 and the pulley 165, and a damping member 280 in contact with each of the output shaft 264 and the intermediate shaft 265.

[0242] The relay shaft 265 is disposed to the left of the output shaft 264. A right portion of the relay shaft 265 is rotatably held by a bearing 265R. A left portion of the relay shaft 265 is rotatably held by a bearing 265L. The bearings 265R and 265L are held by the head housing 231.

[0243] A portion of the belt 164 is hung on a relay shaft 265. As in the second embodiment described above, a portion of the belt 164 is hung on a pulley 165 fixed to the brush 134. The structures of the belt 164 and the pulley 165 are similar to those of the belt 164 and the pulley 165 described in the second embodiment described above.

[0244] The output shaft 264 and the relay shaft 265 are connected via a damping member 280. The damping member 280 functions as a coupling that connects the output shaft 264 and the relay shaft 265. When the rotor shaft 263 rotates and the output shaft 264 rotates, the relay shaft 265 that is connected to the output shaft 264 via the damping member 280 rotates. When the relay shaft 265 rotates, the belt 164 rotates. When the belt 164 rotates, the pulley 165 rotates. When the pulley 165 rotates, the brush 134 rotates together with the pulley 165.

[0245] FIG. 40 is a perspective view from the left front showing the rotor shaft 263, output shaft 264, damping member 280, and relay shaft 265 according to this embodiment. FIG. 41 is an exploded perspective view from the left front showing the rotor shaft 263, output shaft 264, damping member 280, and relay shaft 265 according to this embodiment. FIG. 42 is a perspective view from the left rear showing the rotor shaft 263, output shaft 264, damping member 280, and relay shaft 265 according to this embodiment. FIG. 43 is a view of the relay shaft 265 according to this embodiment as seen from the right. FIG. 44 is a perspective view of the damping member 280 according to this embodiment as seen from the right rear. FIG. 45 is a view of the damping member 280 according to this embodiment as seen from the right.

[0246] The damping member 280 is an elastic member. The damping member 280 is capable of elastic deformation. The damping member 280 is a flexible member. The damping member 280 is capable of flexibly deforming. In this embodiment, the damping member 280 is made of rubber. The damping member 280 may be made of synthetic resin, or may be a porous member such as a sponge.

[0247] The damping member 280 is substantially plate-shaped (block-shaped). The damping member 280 has a right surface 283 (one surface) and a left surface 284 (the other surface) facing in the opposite direction to the right surface 283. A pair of first recesses 281 are provided in the right surface 283 of the damping member 280. A pair of second recesses 282 are provided in the left surface 284 of the damping member 280.

[0248] The first recess 281 has a bottom surface 281A facing right, which has a first inner side surface 281B parallel to the central axis of the output shaft 264, a second inner side surface 281C, and a third inner side surface 281D.

[0249] The second recess 282 has a bottom surface 282A facing left, which has a first inner surface 282B, a second inner surface 282C, and a third inner surface 282D that are parallel to the central axis of the relay shaft 265.

[0250] The output shaft 264 has a base plate portion 266 and a pair of first cam portions 271 protruding leftward from the base plate portion 266. The first cam portions 271 are inserted into the first recessed portion 281. The first cam portions 271 have an end face 271A in contact with the bottom surface 281A, a first outer surface 271B in contact with the first inner surface 281B, a second outer surface 271C in contact with the second inner surface 281C, and a third outer surface 271D in contact with the third inner surface 281D. In addition, the left surface of the base plate portion 266 and the right surface 283 of the damping member 280 are in contact with each other.

[0251] The relay shaft 265 has a base plate portion 267 and a pair of second cam portions 272 protruding rightward from the base plate portion 267. The second cam portions 272 are inserted into the second recessed portion 282. The second cam portions 272 have an end face 272A in contact with the bottom surface 282A, a first outer surface 272B in contact with the first inner surface 282B, a second outer surface 272C in contact with the second inner surface 282C, and a third outer surface 272D in contact with the third inner surface 282D. In addition, the right surface of the base plate portion 267 and the left surface 284 of the damping member 280 are in contact with each other.

[0252] If the output shaft 264 is regarded as a first member R1 and the relay shaft 265 is regarded as a second member R2, the damping member 280 is interposed between the first member R1 and the second member R2 so that the first member R1 and the second member R2 do not come into contact with each other. The first member R1 and the second member R2 are connected via the damping member 280. The rotational force of the first member R1 is transmitted to the second member R2 via the damping member 280.

[0253] The damping member 280 includes a first contact surface that contacts the first member R1 and a second contact surface that contacts the second member R2.

[0254] The first contact surface of the damping member 280 includes a bottom surface 281A that contacts the end surface 271A of the first cam portion 271, a first inner surface 281B that contacts the first outer surface 271B, a second inner surface 281C that contacts the second outer surface 271C, and a third inner surface 281D that contacts the third outer surface 271D. The bottom surface 281A, the first inner surface 281B, the second inner surface 281C, and the third inner surface 281D face in different directions. The first contact surface of the damping member 280 also includes a right surface 283 that contacts the left surface of the base plate portion 266.

[0255] The second contact surface of the damping member 280 includes a bottom surface 282A that contacts the end surface 272A of the second cam portion 272, a first inner surface 282B that contacts the first outer surface 272B, a second inner surface 282C that contacts the second outer surface 272C, and a third inner surface 282D that contacts the third outer surface 272D. The bottom surface 282A, the first inner surface 282B, the second inner surface 282C, and the third inner surface 282D face in different directions. The second contact surface of the damping member 280 also includes a left surface 284 that contacts the right surface of the base plate portion 266.

[0256] As described above, in this embodiment, the damping member 280 includes the right surface 283 which is one surface, the left surface 284 which is the other surface facing the opposite direction to the right surface 283, the first recess 281 provided in the right surface 283, and the second recess 282 provided in the left surface 284. The first contact surface of the damping member 280 which comes into contact with the first member R1 includes the bottom surface 281A of the first recess 281, a first inner side surface 281B of the first recess 281, a second inner side surface 281C of the first recess 281, and a third inner side surface 281D of the first recess 281. The second contact surface of the damping member 280 that contacts the second member R2 includes a bottom surface 282A of the second recess 282, a first inner surface 282B of the second recess 282, a second inner surface 282C of the second recess 282, and a third inner surface 282D of the second recess 282.

[0257] In the above configuration, the damping member 280 can damp vibrations transmitted from the first member R1 to the second member R2. Furthermore, the damping member 280 can transmit the rotational force of the first member R1 to the second member R2 while allowing the relative position of the first member R1 and the second member R2 to change.

[0258] As in the second embodiment described above, in this embodiment, the case 170 is supported by the protrusion 1301 of the base housing 130 via the damping member 180. Deformation (elastic deformation or bending deformation) of the damping member 180 may cause the case 170 to swing (move) relative to the base housing 130. The swinging of the case 170 may cause the first member R1 (output shaft 264) to swing up and down relative to the second member R2 (relay shaft 265), or the first member R1 (output shaft 264) to swing in the tilt direction of the central axis of the second member R2 relative to the second member R2 (relay shaft 265).

[0259] The damping member 280 functions as a coupling that connects the first member R1 and the second member R2 so that they can swing relative to each other. The damping member 280 allows the relative position of the first member R1 and the second member R2 to change. The damping member 280 can transmit the rotational force of the first member R1 to the second member R2 while allowing the relative position of the first member R1 and the second member R2 to change.

[0260] In this embodiment, the suction head 203 includes a base housing 130 having an inlet 138, a brush 134 disposed in the inlet 138, a drive unit 260 that rotates the brush 134, and a damping member 280. The drive unit 260 includes a motor 261, an output shaft 264 connected to the motor 261, and an intermediate shaft 265 connected to the brush 134. The first member R1 includes the output shaft 264, and the second member R2 includes the intermediate shaft 265.

[0261] In the above configuration, when the output shaft 264 is a vibration source, the damping member 280 can damp the vibration transmitted from the output shaft 264 to the relay shaft 265. Since the vibration of the relay shaft 265 is suppressed, the noise generated from the suction head 203 is suppressed. In addition, the damping member 280 can transmit the rotational force of the output shaft 264 to the relay shaft 265 while allowing the relative position of the output shaft 264 and the relay shaft 265 to change.

[0262] In this embodiment, the damping member 280 has a right surface 283 which is one surface, a left surface 284 which is the other surface facing in the opposite direction to the right surface 283, a first recess 281 provided in the right surface 283, and a second recess 282 provided in the left surface 284. The output shaft 264 has a first cam portion 271 which is inserted into the first recess 281. The relay shaft 265 has a second cam portion 272 which is inserted into the second recess 282.

[0263] In the above configuration, the damping member 280 can transmit the rotational force of the output shaft 264 to the intermediate shaft 265 while allowing the relative positions of the output shaft 264 and the intermediate shaft 265 to change.

[0264] [Fourth embodiment] A fourth embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiments are denoted by the same reference numerals, and the description of these components will be simplified or omitted.

[0265] The fourth embodiment is a modification of the second embodiment. Figure 46 is an exploded perspective view of the case 90 according to this embodiment, seen from the front left. As described in the second embodiment, the power transmission mechanism 162 has a pulley 165 and a belt 164 that is wound around the pulley 165. The pulley 165 is housed in the case 90. The case 90 supports the pulley 165.

[0266] 46, in this embodiment, the power transmission mechanism 162 has a damping member 380. The damping member 380 has the same structure as the damping member 180 described in the second embodiment above.

[0267] As shown in FIG. 46 , the case 90 is fixed to the base housing 130 by a screw 316. A washer 317 contacts the head of the screw 316. The threaded portion of the screw 316 is coupled to a screw hole provided in the base housing 130. In the vibration transmission path, the washer 317, the screw 316, and the base housing 130 can be considered as a single member. If the case 90 is considered as a first member S1 and the washer 317, the screw 316, and the base housing 130 are considered as a second member S2, the damping member 380 is arranged so that the first member S1 and the second member S2 do not come into contact with each other. The damping member 380 has a first contact surface that contacts the first member S1 and a second contact surface that contacts the second member S2. The first contact surface of the damping member 380 has at least two contact surfaces that face in different directions. The second contact surface of the damping member 380 has at least two contact surfaces facing in different directions from each other.

[0268] The connection structure between the case 90 and the base housing 130 via the damping member 380 in this embodiment is substantially the same as the connection structure between the case 170 and the base housing 130 via the damping member 180 in the second embodiment described above. In this embodiment, vibrations generated by the rotation of the pulley 165 are prevented from being transmitted to the base housing 130. Therefore, noise generation is suppressed.

[0269] As described above, in this embodiment, the damping member 380 has a first contact surface that contacts the first member S1 and a second contact surface that contacts the second member S2. The first contact surface of the damping member 380 contacts the first member S1 and includes at least two contact surfaces that face in different directions.

[0270] In the above configuration, the first contact surface of the damping member 380 includes at least two contact surfaces facing in different directions from each other, so that the contact area between the damping member 380 and the first member P1 is increased, and therefore the damping member 380 can effectively damp vibrations.

[0271] When the first member S1 is a vibration source, the damping member 380 can damp vibrations transmitted from the first member S1 to the second member S2. Because the first contact surface of the damping member 380 includes at least two contact surfaces facing in different directions, even if the first member S1 vibrates in different directions, the damping member 380 can effectively damp vibrations of the first member S1 in multiple vibration directions.

[0272] In this embodiment, the second contact surface of the damping member 380 contacts the second member S2 and includes at least two contact surfaces facing in different directions from each other.

[0273] In the above configuration, when the first member S1 is the vibration source, the second contact surface of the damping member 380 includes at least two contact surfaces facing in different directions, so that even if the directions of the vibrations input to the second member S2 are different from each other, the damping member 380 can effectively damp vibrations in multiple vibration directions.

[0274] In this embodiment, the power transmission mechanism 162 includes a pulley 165 and a belt 164 that is wound around the pulley 165. The case 90 supports the pulley 165.

[0275] In the above configuration, when the case 90 supporting the pulley 165 of the power transmission mechanism 162 is a vibration source, the damping member 380 can dampen the vibration transmitted from the case 90 to the base housing 130. Therefore, noise generation is suppressed.

[0276] [Other embodiments] In the above-described embodiment, the cleaning device 1 is an upright cleaning device. The cleaning device 1 may be a handheld cleaning device, a canister cleaning device, a shoulder-mounted cleaning device, or a backpack-mounted cleaning device. The cleaning device 1 may also be a sweeper, a scrubber, an extractor, or a robot cleaner. [Explanation of symbols]

[0277] 1...cleaning device, 2...body, 3...suction head, 4...connecting pipe, 5...handle, 6...foot lever, 7...controller, 8...exhaust port, 9...dust bag, 10...battery mounting section, 10L...battery mounting section, 10R...battery mounting section, 11...battery pack, 12...height adjustment dial, 13...light, 14...sound absorbing material, 15...operation switch, 15A...drive switch, 15B...stop switch, 16...screw, 16A...first screw, 16B...second screw, 17...washer, 17A...first washer, 17B...second washer, 18...first connecting member, 19...screw, 20...main body housing ing, 20A... latch mechanism, 21... collection chamber cover, 21A... latch lever, 22... motor chamber cover, 23... collection chamber, 24... motor chamber, 25... flow path, 26... filter, 27... sponge sheet, 28... connecting pipe, 29... second connecting member, 30... base housing, 30A... screw boss, 31... head housing, 31A... latch mechanism, 31B... hinge mechanism, 32... bumper, 33... battery chamber cover, 33A... latch lever, 34... brush, 34A... shaft portion, 34B... brush portion, 35... connecting pipe, 36... running wheel, 37... training wheel, 38... suction port, 39... battery chamber, 40 ...Suction unit, 41...Motor, 42...Blower fan, 43...Motor housing, 44...Base, 45...Fan cover, 45A...Fan intake port, 46...Sensor board, 47...Stator, 47A...Stator core, 47B...Insulator, 47C...Coil, 48...Rotor, 48A...Rotor core, 48B...Permanent magnet, 49...Rotor shaft, 50...Bearing, 51...Bearing, 52...Support member, 53...Support member, 60...Drive unit, 61...Motor, 61A...Output shaft, 62...Power transmission mechanism, 63...Gear, 63A...First gear, 63B...Second gear, 63C...Third gear 3 gear, 64... bearing, 64A... first bearing, 64B... second bearing, 64C... third bearing, 70... case, 71... case body, 71A... screw boss, 71B... shaft hole, 72... case cover, 73... screw, 74... retaining portion, 74A... first retaining portion, 74B... second retaining portion, 75... opening, 76... inner surface, 77... tapered surface, 78... lower surface, 80... damping member, 80A... first damping member, 80B... second damping member, 81... cylindrical portion, 82... first flange portion, 82A... tapered portion, 82B... straight body portion, 83... second flange portion, 84... opening, 85... first contact surface, 85A... outer surface,85B...outer surface, 85C...upper surface, 86...second contact surface, 86A...inner surface, 86B...upper surface, 86C...lower surface, 87...groove, 87A...outer groove, 87B...inner groove, 90...case, 91...bearing retaining member, 92...bearing, 103...suction head, 107...controller, 110...battery mounting portion, 111...battery pack, 116...screw, 117...washer, 130...base housing, 131...head housing, 132...bumper, 134...brush, 135...connecting pipe, 136...running wheel, 137...training wheel, 138...suction port, 142...blower fan, 145...fan cover , 160... drive unit, 161... motor, 162... power transmission mechanism, 163... output shaft, 163R... bearing, 163L... bearing, 164... belt, 165... pulley, 170... case, 170A... intake port, 170B... exhaust port, 171... lower case, 172... upper case, 174... holding portion, 174A... lower holding portion, 174B... upper holding portion, 175... opening, 176... inner surface, 177... tapered surface, 178... tapered surface, 180... damping member, 181... cylindrical portion, 182... first flange portion, 182A... tapered portion, 182B... straight body portion, 183... second flange portion, 183 A...Tapered portion, 183B...Straight body portion, 184...Opening, 185...First contact surface, 185A...Outer surface, 185B...Outer surface, 185C...Outer surface, 186...Second contact surface, 186A...Inner surface, 186B...Upper surface, 186C...Lower surface, 187...Groove, 187A...Outer groove, 187B...Inner groove, 188...Groove, 188A...Outer groove, 188B...Inner groove, 203...Suction head, 231...Head housing, 247...Stator, 247A...Stator core, 247B...Insulator, 247C...Coil, 248...Rotor, 248A...Rotor core, 248B...Permanent magnet, 250...Cooling fan, 260...Drive moving unit, 261...motor, 262...power transmission mechanism, 263...rotor shaft, 263R...bearing, 263L...bearing, 264...output shaft, 265...relay shaft, 265L...bearing, 265R...bearing, 266...base plate portion, 267...base plate portion, 271...first cam portion, 271A...end face, 271B...first outer surface, 271C...second outer surface, 271D...third outer surface, 272...second cam portion, 272A...end face, 272B...first outer surface, 272C...second outer surface, 272D...third outer surface, 280...damping member, 281...first recess,281A...bottom surface, 281B...first inner surface, 281C...second inner surface, 281D...third inner surface, 282...second recess, 282A...bottom surface, 282B...first inner surface, 282C...second inner surface, 282D...third inner surface, 283...right surface, 284...left surface, 300...base portion, 301...protruding portion, 301A...first protruding portion, 301B...second protruding portion, 302...screw hole, 303...large diameter portion, 304...small diameter portion, 305...step, 316...screw, 31 7...washer, 380...damping member, 1300...base portion, 1301...protrusion, 1302...screw hole, 1303...large diameter portion, 1304...small diameter portion, 1305...step, AX...rotation axis, CX...central axis, D1...dimension, D2...dimension, D3...dimension, H1...dimension, H2...dimension, H3...dimension, P1...first member, P2...second member, Q1...first member, Q2...second member, R1...first member, R2...second member, S1...first member, S2...second member.

Claims

1. 1. A damping member for damping vibrations of a cleaning device having a first member and a second member, a first contact surface that contacts the first member; a second contact surface that contacts the second member, The first contact surface includes at least two contact surfaces facing in different directions from each other. Damping member.

2. The second contact surface includes at least two contact surfaces facing in different directions from each other. The damping member according to claim 1 .

3. A cylindrical portion is provided, the first contact surface includes an outer surface of the cylindrical portion, the second contact surface includes an inner surface of the cylindrical portion; The damping member according to claim 1 .

4. the second contact surface includes one or both of an upper surface and a lower surface of the damping member; The damping member according to claim 3 .

5. an opening through which at least a portion of the second member is disposed; The damping member according to claim 1 .

6. A cylindrical portion; a first flange portion connected to one end of the cylindrical portion; a second flange portion connected to the other end of the cylindrical portion, the first contact surface includes an outer surface of the cylindrical portion, a first surface of the first flange portion, and a second surface of the second flange portion; The second contact surface includes an inner surface of the cylindrical portion, a third surface of the first flange portion, and a fourth surface of the second flange portion. The damping member according to claim 1 .

7. One or both of the first flange portion and the second flange portion have a plurality of grooves spaced apart in the circumferential direction. The damping member according to claim 6.

8. On one side, Another surface facing in the opposite direction to the first surface; a first recess provided on one surface; a second recess provided on the other surface, the first contact surface includes a bottom surface of the first recess and an inner side surface of the first recess, The second contact surface includes a bottom surface of the second recess and an inner side surface of the second recess. The damping member according to claim 1 .

9. The fixing member is disposed around the fixing member that fixes the first member and the second member. The damping member according to claim 1 .

10. a housing having an intake port; a brush disposed at the suction port; a drive unit for rotating the brush; a case that supports at least a portion of the drive unit; The damping member according to claim 1, the first member includes the case, The second member includes the housing. Cleaning equipment.

11. The drive unit is A motor; a gear that transmits the rotational force generated by the motor to the brush, The case supports the gear.

11. The cleaning device of claim 10.

12. The drive unit is A motor is provided. the case supports the motor; 11. The cleaning device of claim 10.

13. The damping member has a cylindrical portion, the case has a holding portion disposed around the cylindrical portion, The housing has a protrusion that is inserted into the cylindrical portion.

11. The cleaning device of claim 10.

14. a housing having an intake port; a brush disposed at the suction port; a drive unit for rotating the brush; The damping member according to claim 1, The drive unit is A motor; an output shaft coupled to the motor; a relay shaft connected to the brush, the first member includes the output shaft; The second member includes the relay shaft. Cleaning equipment.

15. The damping member is On one side, Another surface facing in the opposite direction to the first surface; a first recess provided on one surface; a second recess provided on the other surface, the output shaft has a first cam portion inserted into the first recess, the relay shaft has a second cam portion inserted into the second recess; 15. The cleaning device of claim 14.

16. A suction head of a cleaning device, comprising: a housing having an intake port; a brush disposed at the suction port; a power transmission mechanism that transmits rotational force generated by a motor to the brush; a case supporting the power transmission mechanism; The damping member according to claim 1, the first member includes the case, The second member includes the housing. Suction head.

17. the power transmission mechanism includes a gear; The case supports the gear.

17. A suction head according to claim 16.

18. the power transmission mechanism includes a pulley and a belt that is wound around the pulley; The case supports the pulley.

17. A suction head according to claim 16.

19. a screw for fixing the first member and the second member; The damping member is disposed around the screw.

17. A suction head according to claim 16.

Images