Damping member, cleaning device, and suction head

Abstract

The invention provides a damping member, a cleaning device, and a suction head, which can suppress noise generated from the cleaning device. A damping member for damping vibration of a cleaning device having a first member and a second member includes a first contact surface in contact with the first member, and a second contact surface in contact with the second member. The first contact surface includes at least two contact surfaces facing different directions from each other.

Description

Technical Field

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

[0002] In the technical field of cleaning devices, an electric vacuum cleaner as disclosed in Patent Document 1 is known. In Patent Document 1, the suction inlet body includes a suction head body, a cleaning unit, and a coil spring capable of elastic deformation. The cleaning unit is supported on the suction head body in a non-contact, floating state by means of the coil spring.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2010-253206 Summary of the Invention

[0006] Noise generated by the cleaning device can cause discomfort to the user and those around them.

[0007] The purpose of the technology disclosed in this specification is to suppress noise generated from the cleaning device.

[0008] This specification discloses a damping component for attenuating vibrations of a cleaning device having a first component and a second component. The damping component may also include a first contact surface that contacts the first component and a second contact surface that contacts the second component. The first contact surface may also include at least two contact surfaces facing mutually different directions.

[0009] Invention Effects

[0010] According to the technology disclosed in this specification, it is possible to suppress noise generated from the cleaning device. Attached Figure Description

[0011] Figure 1 This is a perspective view showing the cleaning device according to the first embodiment as viewed from the left front.

[0012] Figure 2 This is a perspective view showing the cleaning device according to the first embodiment as viewed from the right rear.

[0013] Figure 3 This is a front view showing the cleaning device according to the first embodiment.

[0014] Figure 4 This is a top view showing the cleaning apparatus according to the first embodiment.

[0015] Figure 5This is a bottom view showing the cleaning device according to the first embodiment.

[0016] Figure 6 This is a cross-sectional view showing the cleaning apparatus according to the first embodiment.

[0017] Figure 7 This is a cross-sectional view showing the cleaning apparatus according to the first embodiment.

[0018] Figure 8 This is a cross-sectional view showing the cleaning apparatus according to the first embodiment.

[0019] Figure 9 This is a cross-sectional view showing a portion of the cleaning apparatus according to the first embodiment.

[0020] Figure 10 This is a perspective view showing the inhalation head according to the first embodiment as viewed from the left front.

[0021] Figure 11 This is a perspective view showing the battery assembly part involved in the first embodiment as viewed from the left front.

[0022] Figure 12 This is a perspective view showing the interior of the suction head according to the first embodiment as viewed from the left front.

[0023] Figure 13 This is a perspective view showing a portion of the interior of the suction head according to the first embodiment, viewed from the left front.

[0024] Figure 14 This is a front view showing a portion of the interior of the suction head according to the first embodiment.

[0025] Figure 15 This is a perspective view showing the power transmission mechanism involved in the first embodiment as viewed from the left front.

[0026] Figure 16 This is an exploded perspective view showing a portion of the interior of the suction head according to the first embodiment, viewed from the left front.

[0027] Figure 17 This is a cross-sectional view showing a portion of the suction head according to the first embodiment.

[0028] Figure 18 This is a cross-sectional view showing a portion of the suction head according to the first embodiment.

[0029] Figure 19 This is a cross-sectional view showing a portion of the suction head according to the first embodiment.

[0030] Figure 20This is a cross-sectional view showing the vicinity of the first attenuation component according to the first embodiment.

[0031] Figure 21 This is a perspective view showing the first attenuation component according to the first embodiment.

[0032] Figure 22 This is a side view showing the first attenuation component according to the first embodiment.

[0033] Figure 23 This is a side view showing the second attenuation component according to the first embodiment.

[0034] Figure 24 This is a perspective view showing the inhalation head involved in the second embodiment as viewed from the left front.

[0035] Figure 25 This is a perspective view showing the interior of the suction head involved in the second embodiment as viewed from the left front.

[0036] Figure 26 This is a cross-sectional view showing the interior of the suction head according to the second embodiment as viewed from the left front.

[0037] Figure 27 This is a cross-sectional view showing the interior of the suction head according to the second embodiment as viewed from the left front.

[0038] Figure 28 This is a cross-sectional view showing the interior of the suction head according to the second embodiment as viewed from the left front.

[0039] Figure 29 This is a perspective view showing a portion of the interior of the suction head involved in the second embodiment as viewed from the left front.

[0040] Figure 30 This is an exploded perspective view showing a portion of the interior of the suction head involved in the second embodiment as viewed from the left front.

[0041] Figure 31 This is a front view showing a portion of the interior of the suction head according to the second embodiment.

[0042] Figure 32 This is a cross-sectional view showing a portion of the suction head according to the second embodiment.

[0043] Figure 33 This is a cross-sectional view showing a portion of the suction head according to the second embodiment.

[0044] Figure 34 This is a cross-sectional view showing the vicinity of the attenuation component involved in the second embodiment.

[0045] Figure 35 This is a perspective view showing the attenuation component according to the second embodiment.

[0046] Figure 36 This is a side view showing the attenuation component according to the second embodiment.

[0047] Figure 37 This is a perspective view showing a portion of the interior of the suction head involved in the third embodiment, viewed from the left front.

[0048] Figure 38 This is an exploded perspective view showing a portion of the interior of the suction head involved in the third embodiment as viewed from the left front.

[0049] Figure 39 This is a cross-sectional view showing a portion of the suction head according to the third embodiment.

[0050] Figure 40 This is a perspective view showing the rotor shaft, output shaft, attenuation component, and intermediate shaft involved in the third embodiment, viewed from the left front.

[0051] Figure 41 This is an exploded perspective view showing the rotor shaft, output shaft, attenuation component, and intermediate shaft involved in the third embodiment as viewed from the left front.

[0052] Figure 42 This is a perspective view showing the rotor shaft, output shaft, attenuation component, and intermediate shaft involved in the third embodiment, viewed from the left rear.

[0053] Figure 43 This is a diagram showing the transfer shaft involved in the third embodiment as viewed from the right.

[0054] Figure 44 This is a perspective view showing the attenuation component involved in the third embodiment as viewed from the right rear.

[0055] Figure 45 This is a diagram showing the attenuation component involved in the third embodiment from the right.

[0056] Figure 46 This is an exploded perspective view of the housing involved in the fourth embodiment, viewed from the left front.

[0057] Explanation of reference numerals in the attached figures

[0058] 1… Cleaning device; 2… Body; 3… Suction head; 4… Connecting pipe; 5… Handle; 6… Foot pedal; 7… Controller; 8… Exhaust port; 9… Dust bag; 10… Battery assembly; 10L… Battery assembly; 10R… Battery assembly; 11… Battery pack; 12… Height adjustment dial; 13… Light; 14… Sound absorption component; 15… Operating 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 component; 19… Screw; 20… Main body shell; 20A… Latch mechanism; 21… Collection chamber cover; 21A… Latch lever; 22… Motor chamber cover; 23… 24…Collection chamber; 25…Motor chamber; 26…Flow path; 27…Filter; 28…Sponge sheet; 29…Connecting pipe; 30…Second connecting component; 30…Base housing; 30A…Threaded boss; 31…Head housing; 31A…Latch mechanism; 31B…Hinge mechanism; 32…Buffer; 33…Battery compartment cover; 33A…Latch rod; 34…Brush; 34A…Shaft; 34B…Brush part; 35…Connecting pipe; 36…Traveling wheel; 37…Auxiliary wheel; 38…Inlet; 39…Battery compartment; 40…Suction unit; 41…Motor; 42…Blower fan; 43…Motor housing; 44…Base; 45…Fan cover; 45A…Fan air inlet; 46…Sensor substrate; 47…Stator; 47A…Stator core; 47… B…Insulator; 47C…Coil; 48…Rotor; 48A…Rotor core; 48B…Permanent magnet; 49…Rotor shaft; 50…Bearing; 51…Bearing; 52…Support component; 53…Support component; 60…Drive unit; 61…Motor; 61A…Output shaft; 62…Power transmission mechanism; 63…Gear; 63A…First gear; 63B…Second gear; 63C…Third gear; 64…Bearing; 64A…First bearing; 64B…Second bearing; 64C…Third bearing; 70…Housing; 71…Housing body; 71A…Threaded boss; 71B…Shaft hole; 72…Housing cover; 73…Screw; 74…Retaining part; 74A…First retaining part; 74B…Second retaining part; 75…Opening; 76…Inner Surface; 77…conical surface; 78…lower surface; 80…attenuation component; 80A…first attenuation component; 80B…second attenuation component; 81…cylindrical portion; 82…first flange portion; 82A…conical portion; 82B…straight cylindrical 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…housing; 91…bearing retaining component; 92…bearing; 103…suction head; 107…controller; 110…battery assembly; 111…battery pack; 116…screw; 117…washer;130…Base housing; 131…Head housing; 132…Buffer; 134…Brush; 135…Connecting pipe; 136…Traveling wheel; 137…Auxiliary wheel; 138…Inlet; 142…Exhaust 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…Housing; 170A…Air inlet; 170B…Exhaust outlet; 171…Lower housing; 172…Upper housing; 174…Retaining part; 174A…Lower retaining part; 174B…Upper retaining part; 175…Opening; 176…Inner surface; 177…Conical surface; 178…Conical surface; 180 …attenuation component; 181…cylindrical portion; 182…first flange portion; 182A…conical portion; 182B…straight cylindrical portion; 183…second flange portion; 183A…conical portion; 183B…straight cylindrical 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; 24 8…Rotor; 248A…Rotor core; 248B…Permanent magnet; 250…Cooling fan; 260…Drive unit; 261…Motor; 262…Power transmission mechanism; 263…Rotor shaft; 263R…Bearing; 263L…Bearing; 264…Output shaft; 265…Intermediate shaft; 265L…Bearing; 265R…Bearing; 266…Base plate; 267…Base plate; 271…First cam; 271A…End face; 271B…First outer surface; 271C…Second outer surface; 271D…Third outer surface; 272…Second cam; 272A…End face; 272B…First outer surface; 272C…Second outer surface; 272D…Third outer surface; 280…Attenuation component; 281… 1st recess; 281A…bottom surface; 281B…1st inner surface; 281C…2nd inner surface; 281D…3rd inner surface; 282…2nd recess; 282A…bottom surface; 282B…1st inner surface; 282C…2nd inner surface; 282D…3rd inner surface; 283…right surface; 284…left surface; 300…base portion; 301…protrusion; 301A…1st protrusion; 301B…2nd protrusion; 302…threaded hole; 303…large diameter portion; 304…small diameter portion; 305…step; 316…screw; 317…washer; 380…damping component; 1300…base portion; 1301…protrusion; 1302…threaded 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…part 1; P2…part 2; Q1…part 1; Q2…part 2; R1…part 1; R2…part 2; S1…part 1; S2…part 2. Detailed Implementation

[0059] In one or more embodiments, the damping component can attenuate the vibration of the cleaning device having the first component and the second component. The damping component may include a first contact surface that contacts the first component and a second contact surface that contacts the second component. The first contact surface may include at least two contact surfaces facing mutually different directions.

[0060] Based on the above configuration, since the first contact surface includes at least two contact surfaces facing different directions, the contact area between the damping component and the first component is increased. Therefore, the damping component can effectively dampen vibration. Because the vibration is damped, the noise generated by the cleaning device is suppressed.

[0061] When the first component is the vibration source, the damping component can attenuate the vibration transmitted from the first component to the second component. Since the vibration of the second component is suppressed, the noise generated by the cleaning device is suppressed. Because the first contact surface includes at least two contact surfaces facing mutually opposite directions, even if the first component vibrates in mutually opposite directions, the damping component can effectively attenuate the vibration of the first component in multiple vibration directions. Since the vibration of the second component is suppressed, the noise generated by the cleaning device is suppressed.

[0062] When the second component is the vibration source, the damping component can attenuate the vibration transmitted from the second component to the first component. Since the vibration of the first component is suppressed, the noise generated by the cleaning device is also suppressed. Because the first contact surface includes at least two contact surfaces facing mutually different directions, even if the directions of vibration input to the first component are mutually different, the damping component can effectively attenuate vibrations input to the first component in multiple vibration directions. Since the vibration of the first component is suppressed, the noise generated by the cleaning device is also suppressed.

[0063] In one or more embodiments, the second contact surface may include at least two contact surfaces facing different directions from each other.

[0064] Based on the above configuration, when the first component is the vibration source, since the second contact surface includes at least two contact surfaces facing different directions, the attenuation component can effectively attenuate vibrations in multiple vibration directions even if the vibrations input to the second component are in different directions. Similarly, when the second component is the vibration source, since the second contact surface includes at least two contact surfaces facing different directions, the attenuation component can effectively attenuate vibrations in multiple vibration directions even if the second component vibrates in different directions.

[0065] In one or more embodiments, the attenuation member may include a cylindrical portion. The first contact surface may include the outer surface of the cylindrical portion. The second contact surface may include the inner surface of the cylindrical portion.

[0066] According to the above configuration, when the first component is in contact with the outer surface of the cylindrical portion and the second component is in contact with the inner surface of the cylindrical portion, the damping component can dampen the vibration transmitted from one of the first and second components to the other component.

[0067] In one or more embodiments, the second contact surface may include one or both of the upper and lower surfaces of the attenuation component.

[0068] According to the above configuration, when the second component is in contact with one or both of the upper and lower surfaces of the attenuation component, the attenuation component can attenuate the vibration transmitted from one of the first and second components to the other component.

[0069] In one or more embodiments, the attenuation component may have an opening for at least a portion of the second component to be configured.

[0070] According to the above configuration, when at least a portion of the second component is disposed in the opening of the damping component, the damping component is able to dampen vibrations transmitted from one component of the first component and the second component to the other component.

[0071] In one or more embodiments, the attenuation 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: the 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: the inner surface of the cylindrical portion, a third surface of the first flange portion, and a fourth surface of the second flange portion.

[0072] According to the above configuration, the damping component is able to dampen vibrations transmitted from one component (the first component) to the other component (the second component).

[0073] In one or more embodiments, one or both of the first flange portion and the second flange portion may have a plurality of grooves spaced apart in the circumferential direction.

[0074] Based on the above configuration, when the groove is provided on the first flange portion, the groove allows the first flange portion to easily bend and deform, thus the damping member can effectively dampen vibrations. Furthermore, when the damping member is inserted into the opening provided on the first or second component, the ease with which the first flange portion bends and deforms facilitates insertion. The same applies when the groove is provided on the second flange portion.

[0075] In one or more embodiments, the attenuation member may include: a surface, another surface facing the opposite direction to the first surface, a first recess disposed on the first surface, and a second recess disposed on the other surface. The first contact surface may include: the bottom surface of the first recess and the inner surface of the first recess. The second contact surface may include: the bottom surface of the second recess and the inner surface of the second recess.

[0076] According to the above configuration, the damping component can attenuate vibrations transmitted from one component (first component) to the other component (second component). Furthermore, the damping component can transmit the rotational force of the first component to the second component while allowing changes in the relative positions of the first and second components.

[0077] In one or more embodiments, the attenuation component may be configured around the fixing component that fixes the first component and the second component.

[0078] According to the above configuration, with the first and second components fixed by the fixing component, the damping component is able to dampen the vibration transmitted from one component of the first and second components to the other component.

[0079] In one or more embodiments, the cleaning device may also include: a housing having a suction inlet, a brush disposed at the suction inlet, a drive unit for rotating the brush, a housing supporting at least a portion of the drive unit, and the aforementioned attenuation member. The first component may include the housing, and the second component may include the outer casing.

[0080] Based on the above configuration, when the housing of the drive unit is the vibration source, the damping component can attenuate the vibration transmitted from the housing to the outer casing. Since the vibration of the outer casing is suppressed, the noise generated by the cleaning device is also suppressed.

[0081] In one or more embodiments, the drive unit may include a motor and gears that transmit the rotational force generated by the motor to the brush. The housing may also support the gears.

[0082] Based on the above configuration, when the gear housing is the vibration source, the damping component can attenuate the vibration transmitted from the housing to the outer casing. Since the vibration of the outer casing is suppressed, the noise generated by the cleaning device is also suppressed.

[0083] In one or more embodiments, the drive unit may have a motor. The housing may support the motor.

[0084] Based on the above configuration, when the motor housing is the vibration source, the damping component can attenuate the vibration transmitted from the housing to the outer casing. Since the vibration of the outer casing is suppressed, the noise generated by the cleaning device is also suppressed.

[0085] In one or more embodiments, the attenuation member may have a cylindrical portion. The housing may have a retaining portion disposed around the cylindrical portion. The outer casing may have a protrusion inserted into the inner side of the cylindrical portion.

[0086] According to the above configuration, the cylindrical portion of the damping member can dampen the vibration transmitted to the protrusion of the outer casing from the retaining portion of the casing. Since the vibration of the outer casing is suppressed, the noise generated by the cleaning device is also suppressed.

[0087] In one or more embodiments, the cleaning device may include: a housing having a suction inlet, a brush disposed at the suction inlet, a drive unit for rotating the brush, and the aforementioned attenuation component. The drive unit may include: a motor, an output shaft connected to the motor, and a rotating shaft connected to the brush. The first component may include the output shaft, and the second component may include the rotating shaft.

[0088] Based on the above configuration, when the output shaft is the vibration source, the damping component can attenuate the vibration transmitted from the output shaft to the intermediate shaft. Since the vibration of the intermediate shaft is suppressed, the noise generated by the cleaning device is also suppressed. Furthermore, the damping component can transmit the rotational force of the output shaft to the intermediate shaft while allowing changes in the relative position of the output shaft and the intermediate shaft.

[0089] In one or more embodiments, the attenuation member may have: a surface, another surface facing the opposite direction to the surface, a first recess on the surface, and a second recess on the other surface. The output shaft may have: a first cam portion inserted into the first recess. The transfer shaft may have: a second cam portion inserted into the second recess.

[0090] Based on the above configuration, the attenuation component 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.

[0091] In one or more embodiments, the suction head of the cleaning device may include: a housing with a suction inlet, a brush disposed at the suction inlet, a power transmission mechanism for transmitting rotational force generated by a motor to the brush, a housing for supporting the power transmission mechanism, and the aforementioned attenuation component. The first component may include the housing, and the second component may include the outer shell.

[0092] Based on the above configuration, when the housing of the power transmission mechanism is the vibration source, the damping component can attenuate the vibration transmitted from the housing to the outer casing. Since the vibration of the outer casing is suppressed, the noise generated by the cleaning device is also suppressed.

[0093] In one or more embodiments, the power transmission mechanism may include gears. The housing may support the gears.

[0094] Based on the above configuration, when the housing supporting the gears of the power transmission mechanism is the vibration source, the damping component can attenuate the vibration transmitted from the housing to the outer casing. Since the vibration of the outer casing is suppressed, the noise generated by the cleaning device is also suppressed.

[0095] In one or more embodiments, the power transmission mechanism may include: pulleys and a belt mounted on the pulleys. A housing may support the pulleys.

[0096] Based on the above configuration, when the housing supporting the pulley of the power transmission mechanism is the vibration source, the damping component can attenuate the vibration transmitted from the housing to the outer casing. Since the vibration of the outer casing is suppressed, the noise generated by the cleaning device is also suppressed.

[0097] In one or more embodiments, the suction head may also include screws for securing the first component and the second component. A damping component may also be disposed around the screws.

[0098] According to the above configuration, with the first and second components fixed by screws, the damping component is able to dampen vibrations transmitted from one component to the other component.

[0099] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The constituent elements of the embodiments described below can be appropriately combined. In addition, sometimes some constituent elements are not used.

[0100] In the implementation, the terms "left," "right," "front," "back," "up," and "down" are used to describe the positional relationships of the various parts. These terms indicate the relative position or direction with respect to the center of the cleaning device 1.

[0101] [First Implementation]

[0102] The first embodiment is described.

[0103] <Cleaning Device>

[0104] Figure 1 This is a perspective view showing the cleaning device 1 according to this embodiment as viewed from the left front. Figure 2 This is a perspective view showing the cleaning device 1 according to this embodiment as viewed from the right rear. Figure 3 This is a front view of the cleaning device 1 according to this embodiment. Figure 4 This is a top view of the cleaning device 1 according to this embodiment. Figure 5 This is a bottom view of the cleaning device 1 according to this embodiment. Figure 6 This is a cross-sectional view of the cleaning device 1 according to this embodiment, which is equivalent to... Figure 3 The cross section along line A-A is shown in the view. Figure 7 This is a cross-sectional view of the cleaning device 1 according to this embodiment, which is equivalent to... Figure 3 The section along line B-B in the view is shown in the diagram. Figure 8 This is a cross-sectional view of the cleaning device 1 according to this embodiment, which is equivalent to... Figure 4 The C-C line section is shown in the view. Figure 9 This is a cross-sectional view showing a portion of the cleaning apparatus 1 according to this embodiment, equivalent to showing... Figure 8 A magnified portion of the image.

[0105] The cleaning device 1 includes: 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.

[0106] In this embodiment, the cleaning device 1 is an upright cleaning device. An upright cleaning device refers to a cleaning device whose 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 rotate in a manner that changes between being upright relative to the suction head 3 and being tilted relative to the suction head 3. A foot pedal 6 is provided between the body 2 and the suction head 3. By operating the foot pedal 6, the user can switch between a state where the body 2 and the suction head 3 are fixed and a state where the fixing is released.

[0107] The casing 2 includes: a main body shell 20, a collection chamber cover 21, a motor chamber cover 22, a controller 7, and a suction unit 40. The main body shell 20 is longer in the vertical direction. The collection chamber cover 21 and the motor chamber cover 22 are respectively mounted on the front of the main body shell 20. The collection chamber cover 21 is positioned higher than the motor chamber cover 22. The main body shell 20 has an exhaust port 8.

[0108] like Figure 8 As shown, the main housing 20 has a collection chamber 23 with a dust collection bag 9 and a motor chamber 24 with a suction unit 40.

[0109] The collection chamber 23 is positioned higher than the motor chamber 24. The collection chamber cover 21 is configured to cover an opening at the front of the collection chamber 23. The motor chamber cover 22 is configured to cover an opening at 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.

[0110] The capture chamber cover 21 opens and closes the opening at the front of the capture chamber 23. A claw is provided at the lower end of the capture chamber cover 21. A recess is provided on the main body housing 20, below the opening of the capture chamber 23. The recess is provided on the motor chamber cover 22. The claw of the capture chamber cover 21 is inserted into the recess of the motor chamber cover 22. A latching mechanism 20A is provided on the main body housing 20, above the opening of the capture chamber 23. The latching mechanism 20A secures the upper part of the capture chamber cover 21 to the main body housing 20. The capture chamber cover 21 has a latching lever 21A operated by the user. The latching lever 21A is provided at the front of the capture chamber cover 21. By operating the latching lever 21A in a forward-moving manner, the fixation between the main body housing 20 and the capture chamber cover 21 by the latching mechanism 20A can be released. Accordingly, the opening at the front of the capture chamber 23 is opened.

[0111] like Figure 8 As shown, the body 2 has: a flow path 25 connecting the collection chamber 23 and the motor chamber 24 inside the main body shell 20, a filter 26 disposed at the boundary between the flow path 25 and the collection chamber 23, a sponge sheet 27 disposed in the flow path of the air communicating with the exhaust port 8, and a connecting pipe 28 disposed at the upper part of the main body shell 20.

[0112] The flow path 25 is disposed inside the main housing 20 on the right side of the collection chamber 23 and the motor chamber 24. The flow path 25 is configured to extend vertically. 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.

[0113] Filter 26 collects dust. Filter 26 is located on the right side of the collection chamber 23. Filter 26 can be an example of a HEPA filter (High Efficiency Particulate Air Filter). Filter 26 is detachable from the main housing 20.

[0114] The sponge sheet 27 is disposed in the airflow path communicating with the exhaust port 8. The sponge sheet 27 is a sound-absorbing material for the exhaust air flowing towards the exhaust port 8.

[0115] The connecting pipe 28 is configured to penetrate the upper part of the main body housing 20. The lower end of the connecting pipe 28 is disposed in the collection chamber 23. The dust collection bag 9 is connected to the lower end of the connecting pipe 28. Dust is collected in the dust collection bag 9.

[0116] The suction head 3 is positioned opposite the surface to be cleaned. The suction head 3 is movable on the surface to be cleaned. The suction head 3 includes: a base housing 30, a head housing 31, a buffer 32, a battery compartment cover 33, a brush 34, a connecting pipe 35, a travel wheel 36, and an auxiliary wheel 37.

[0117] The base housing 30 is opposite to 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 is capable of sucking up dust from the surface to be cleaned.

[0118] The head housing 31 is connected to the main housing 20. The head housing 31 is positioned above the base housing 30. The head housing 31 has a battery compartment 39.

[0119] The buffer 32 is configured to cover the front of the base housing 30 and the front of the head housing 31. The buffer 32 protects the front of the base housing 30 and the front of the head housing 31.

[0120] The battery compartment cover 33 is rotatably connected to the head housing 31. The battery compartment cover 33 is configured to cover an opening provided on the upper part of the battery compartment 39. The battery compartment 39 is defined by the head housing 31 and the battery compartment cover 33.

[0121] A latching mechanism 31A is provided on the head housing 31, and on the rear side of the opening of the battery compartment 39. The latching mechanism 31A secures the rear part of the battery compartment cover 33 and the head housing 31. The battery compartment cover 33 has a latch lever 33A operated by the user. The latch lever 33A is located at the rear of the battery compartment cover 33. The front part of the battery compartment cover 33 is rotatably supported on the front part of the head housing 31 by means of a hinge mechanism 31B. By operating the latch lever 33A in an upward manner, the fixation between the head housing 31 and the battery compartment cover 33, implemented by the latching mechanism 31A, can be released. Accordingly, the opening at the top of the battery compartment 39 is opened.

[0122] Figure 10 This is a perspective view showing the inhalation head 3 as described in this embodiment, viewed from the left front. Figure 10 This indicates that the battery compartment cover 33 is open. For example... Figure 10 As shown, the head housing 31 has a battery compartment 39 for mounting the battery assembly 10. The battery compartment 39 is located in the center of the head housing 31 in the front-rear direction. An opening is provided at the top of the battery compartment 39. A battery compartment cover 33 opens and closes the opening at the top of the battery compartment 39. A battery pack 11 is mounted in the battery assembly 10. The battery pack 11 is the power source for the cleaning device 1.

[0123] Figure 11 This is a perspective view showing the battery assembly 10 as described in this embodiment, viewed from the left front. Figure 11 This indicates the state where the battery pack 11 has been removed from the battery assembly section 10. The battery assembly section 10 is disposed on the bottom surface of the battery compartment 39. The battery pack 11 is assembled in the battery assembly section 10. In this embodiment, two battery assembly sections 10 are provided. The two battery assembly sections 10 are arranged in a left-right direction. The battery assembly section 10 includes a left battery assembly section 10L and a right battery assembly section 10R.

[0124] The battery pack 11 supplies power to the cleaning device 1 when it is assembled in the battery assembly section 10. The battery pack 11 is a general-purpose battery capable of being 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 described in this embodiment. The battery pack 11 includes a lithium-ion battery. The battery pack 11 includes a rechargeable secondary battery. The battery assembly section 10 has a structure equivalent to that of a battery assembly section for a power tool.

[0125] The user of the cleaning device 1 can perform the following operations: assembling the battery pack 11 into the battery assembly section 10, and removing the battery pack 11 from the battery assembly section 10. The battery assembly section 10 includes a guide member and main body terminals. The battery pack 11 has battery terminals. The guide member of the battery assembly section 10 guides the battery pack 11. The main body terminals of the battery assembly section 10 are connected to the battery terminals of the battery pack 11.

[0126] When the battery pack 11 is installed in the battery mounting section 10L on the left side, the user can install the battery pack 11 into the battery mounting section 10L by inserting the battery pack 11 from the left side. The battery pack 11 is inserted into the battery mounting section 10L while being guided by a guide member. By installing the battery pack 11 into the battery mounting section 10L, the battery terminals of the battery pack 11 and the main body terminals of the battery mounting section 10L are electrically connected. The battery pack 11 has a locking release button. The user of the cleaning device 1 can remove the battery pack 11 from the battery mounting section 10L by operating the locking release button of the battery pack 11 and moving the battery pack 11 to the right.

[0127] With the battery pack 11 installed in the battery mounting section 10R on the right side, the user can install the battery pack 11 in the battery mounting section 10R by inserting it from the right side. The battery pack 11 is inserted into the battery mounting section 10R while being guided by a guide member. By installing the battery pack 11 in the battery mounting section 10R, the battery terminals of the battery pack 11 and the main body terminals of the battery mounting section 10R are electrically connected. The battery pack 11 has a locking release button. The user of the cleaning device 1 can remove the battery pack 11 from the battery mounting section 10R by moving the battery pack 11 to the left by operating the locking release button.

[0128] Brush 34 is disposed at suction port 38. Brush 34 is capable of rotating about a rotation axis extending in the left-right direction. Brush 34 rotates in a manner that gathers dust present on the surface to be cleaned. A height adjustment dial 12 is disposed on the upper part of the head housing 31. The height adjustment dial 12 is operated by the user. By operating the height adjustment dial 12, the height of brush 34 can be adjusted.

[0129] Connecting pipe 35 is connected to connecting pipe 4. Connecting pipe 35 transports dust drawn in from suction port 38 to connecting pipe 4. For example... Figure 6 As shown, 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.

[0130] Two traveling wheels 36 and two auxiliary wheels 37 are respectively disposed at the bottom of the base housing 30. Each traveling wheel 36 rotates about a rotation axis extending in the left-right direction. Rotation of the traveling wheels 36 causes the suction head 3 to move. Two auxiliary wheels 37 are disposed at a position further forward than the traveling wheels 36. Each auxiliary wheel 37 rotates about a rotation axis extending in the left-right direction.

[0131] The suction head 3 has a lamp 13 for illuminating the front of the suction head 3. Two lamps 13 are provided at the front of the suction head 3.

[0132] Connecting pipe 4 connects the body 2 to the suction head 3. Connecting pipe 4 connects the connecting pipe 28 of the body 2 to the connecting pipe 35 of the suction head 3. The connecting pipe 4 is arranged vertically at the right rear of the body 2.

[0133] The suction unit 40 generates a suction force at the suction port 38, which communicates with the inside of the main housing 20. The suction unit 40 is disposed in the motor chamber 24. Figure 9 As shown, the attraction unit 40 includes: a motor 41, a blower fan 42, a motor housing 43, a base 44, a fan cover 45, and a sensor substrate 46.

[0134] Motor 41 is the power source for the cleaning device 1. Motor 41 is an electric motor. Motor 41 is driven by power supplied from the battery pack 11. Motor 41 is an internal rotor type DC brushless motor. Figure 9 As shown, the motor 41 includes a stator 47, a rotor 48, and a rotor shaft 49. The stator 47 includes a stator core 47A with multiple teeth, an insulator 47B fixed to the stator core 47A, and a coil 47C wound around the teeth of the stator core 47A by means of the insulator 47B. The rotor 48 is disposed radially inside the stator 47. The rotor 48 includes a rotor core 48A and multiple 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 longer in the left-right direction. The rotor 48 and the rotor shaft 49 rotate together about the rotation axis AX of the motor 41. The rotation axis AX extends in the left-right direction. The right end of the rotor shaft 49 is rotatably supported by a bearing 50. The left end of the rotor shaft 49 is rotatably supported by a bearing 51.

[0135] The blower fan 42 creates an attractive force at the intake port 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. Rotation of the rotor shaft 49 causes the blower fan 42 to rotate together with the rotor shaft 49. The rotation of the blower fan 42 creates an attractive force at the intake port 38.

[0136] The motor housing 43 houses the motor 41. The motor housing 43 also holds the stator 47, bearing 50, and bearing 51.

[0137] 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 the fan shroud 45.

[0138] The fan shroud 45 is configured to cover at least a portion of the blower fan 42. The fan shroud 45 is connected to the base 44. At least a portion of the fan shroud 45 is disposed around the blower fan 42. At least a portion of the fan shroud 45 is disposed to the right of the blower fan 42. The periphery of the fan shroud 45 is fixed to the base 44. The fan shroud 45 has a fan inlet 45A. The fan inlet 45A is located at the right end of the fan shroud 45. Rotation of the blower fan 42 causes air to flow into the blower fan 42 from the fan inlet 45A. The air passing through the blower fan 42 flows out to the left side of the base 44 through an opening in the base 44.

[0139] The motor housing 43 is supported by a rubber support member 52. The support member 52 is supported by the main housing 20. The fan shroud 45 is supported by a rubber support member 53. The support member 53 is supported by the main housing 20.

[0140] The sensor substrate 46 detects the position of the rotor 48 in the rotational direction. The sensor substrate 46 is fixed to the left side of the insulator 47B of the stator 47. The sensor substrate 46 has a rotation detection element supported on a ring-shaped circuit board. The rotation detection element detects the position of the rotor 48 in the rotational direction by detecting the position of the permanent magnet of the rotor 48. The controller 7 supplies drive current to the coils of the stator 47 based on the detection data from the rotation detection element.

[0141] like Figure 6 As shown, at least a portion of the area surrounding the suction unit 40 is provided with a sound-absorbing component 14. A porous component made of synthetic resin can be exemplified as the sound-absorbing component 14.

[0142] The controller 7 controls the electric components mounted on the cleaning device 1. The controller 7 operates powered by 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 substrate on which multiple electronic components are mounted. Examples of electronic components mounted on the substrate include processors such as CPUs (Central Processing Units), non-volatile memory such as ROM (Read Only Memory) or RAM, volatile memory such as RAM (Random Access Memory), and resistors.

[0143] A handle 5 is connected to the upper part of the main housing 20. The handle 5 is held by the user. While holding the handle 5, the user can move the cleaning device 1. An operation switch 15 is provided on the handle 5. While holding the handle 5, the user can operate the operation switch 15. The user operates the operation switch 15 to switch the motor 41 between driving and stopping. 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 motor 41 is stopped, the motor 41 is started by operating the drive switch 15A. When the motor 41 is driven, the drive mode of the motor 41 is switched by operating the drive switch 15A.

[0144] <Inhalation Head>

[0145] Figure 12 This is a perspective view showing the interior of the inhalation head 3 as described in this embodiment, viewed from the left front. Figure 13 This is a perspective view showing a portion of the interior of the suction head 3 as described in this embodiment, viewed from the left front. Figure 12 A magnified portion of the image. Figure 14 This is a front view showing a portion of the interior of the inhalation head 3 according to this embodiment, equivalent to a view from the front. Figure 13 The diagram in part D.

[0146] The suction head 3 includes: a base housing 30 having a suction port 38, a head housing 31 disposed above the base housing 30, a buffer member 32 covering the front of the base housing 30 and the front of the head housing 31, a brush 34 disposed at the suction port 38, a drive unit 60 for rotating the brush 34, a housing 70 supporting at least a portion of the drive unit 60, and a damping member 80 for damping the vibration of the cleaning device 1.

[0147] The base housing 30 and the head housing 31 are secured by a plurality of screws 19. The base housing 30 includes a plurality of threaded bosses 30A with threaded holes. The head housing 31 includes a plurality of threaded openings for the screws 19 to be disposed. After being inserted into the threaded opening of the head housing 31, the screws 19 are then inserted into the threaded holes of the threaded bosses 30A of the base housing 30. By engaging the threaded portions of the screws 19 with the threaded holes of the threaded bosses 30A, the base housing 30 and the head housing 31 are secured.

[0148] The drive unit 60 is supported on the base housing 30 and the head housing 31. The drive unit 60 includes a motor 61 and a power transmission mechanism 62 that transmits the rotational force generated by the motor 61 to the brush 34. The housing 70 supports the power transmission mechanism 62.

[0149] Motor 61 is an internal rotor type DC brushless motor. Motor 61 is positioned further rearward than brush 34. Motor 61 is located on the left side of suction head 3. Motor 61 has an output shaft 61A. The rotation axis of output shaft 61A extends in the left-right direction.

[0150] Figure 15 This is a perspective view showing the power transmission mechanism 62 involved in this embodiment as viewed from the left front. Figure 15 Equivalent to showing with imaginary lines Figure 13 The figure shows the base housing 30 and the housing 70. 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.

[0151] The housing 70 supports a plurality of gears 63 for rotation. The drive unit 60 includes bearings 64 that support the gears 63 for rotation. The bearings 64 include a first bearing 64A supporting a first gear 63A for rotation, a second bearing 64B supporting a second gear 63B for rotation, and a third bearing 64C supporting a third gear 63C for rotation. The bearings 64 are held within the housing 70. The housing 70 supports the gears 63 for rotation by means of the bearings 64.

[0152] The housing 70 includes: a housing body 71 surrounding a plurality of gears 63; a housing cover 72 covering an opening at the left end of the housing body 71; and four screws 73 for securing the housing body 71 and the housing cover 72. A threaded boss 71A is provided on the outer peripheral surface of the housing body 71. The screws 73 are inserted into the threaded holes of the threaded boss 71A through threaded openings provided on the periphery of the housing cover 72. A shaft hole 71B for inserting an output shaft 61A is provided on the upper part of the housing body 71.

[0153] Figure 16 This is an exploded perspective view showing a portion of the interior of the inhalation head 3 as described in this embodiment, viewed from the left front. Figure 17 This is a cross-sectional view showing a portion of the suction head 3 according to this embodiment, equivalent to... Figure 13 The cross section along line E-E is shown in the view. Figure 18 This is a cross-sectional view showing a portion of the suction head 3 according to this embodiment, equivalent to... Figure 13 The F-F line section is shown in the view. Figure 19 This is a cross-sectional view showing a portion of the suction head 3 according to this embodiment, equivalent to... Figure 13 The cross section along line G-G in the view.

[0154] The base housing 30 has a base portion 300 and a protrusion 301 protruding upward from the base portion 300. An intake port 38 is provided at the front of the lower surface of the base portion 300. In a plane orthogonal to the rotation axis of the brush 34, at least a portion of the base portion 300 is an arc-shaped arrangement surrounding the upper part of the brush 34.

[0155] A protrusion 301 is provided at the front of the left side of the base portion 300. The base portion 300 and the protrusion 301 are integral (single component). Two protrusions 301 are provided. The protrusion 301 includes: a first protrusion 301A provided at the front end of the left side of the base portion 300, and a second protrusion 301B disposed at a position further rearward than the first protrusion 301A.

[0156] The housing 70 has a retaining portion 74. The retaining portion 74 is annular. The retaining portion 74 is disposed on the housing body 71. The housing body 71 and the retaining portion 74 are integral (single component). Two retaining portions 74 are provided. The retaining portion 74 includes: a first retaining portion 74A disposed at the front of the housing body 71, and a second retaining portion 74B disposed at the rear of the housing body 71.

[0157] The retaining portion 74 is annular. The retaining portion 74 is positioned higher than the protrusion 301. The protrusion 301 is aligned with the retaining portion 74. The first protrusion 301A is aligned with the first retaining portion 74A. The second protrusion 301B is aligned with the second retaining portion 74B.

[0158] The suction head 3 includes a screw 16 for securing the housing 70 and the base housing 30. The screw 16 is a fixing component for securing the housing 70 and the base housing 30. The protrusion 301 and the retaining portion 74 each function as threaded bosses. The retaining portion 74 has an opening 75 for inserting the screw 16. The protrusion 301 has a threaded hole 302 for inserting the threaded portion of the screw 16. The screw 16 includes a first screw 16A for securing the first protrusion 301A and the first retaining portion 74A, and a second screw 16B for securing the second protrusion 301B and the second retaining portion 74B.

[0159] A washer 17 is disposed at the lower part of the head of the screw 16. The washer 17 includes a first washer 17A disposed on the first screw 16A and a second washer 17B disposed on the second screw 16B.

[0160] The damping component 80 is disposed at the boundary between the base housing 30 and the housing 70. The damping component 80 is disposed at the boundary between the protrusion 301 and the retaining portion 74. The damping component 80 is disposed around the screw 16. The damping component 80 can suppress the transmission of vibration from the housing 70 to the base housing 30. The damping component 80 attenuates noise.

[0161] like Figure 19 As shown, the brush 34 has a shaft portion 34A and a brush portion 34B fixed to the outer peripheral 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 by means of a second connecting member 29. When the brush 34 rotates and strikes the surface to be cleaned, the brush 34 is input with an impact force. 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. Because the third gear 63C is transmitted with an impact force, the contact force between the tooth surfaces of the plurality of gears 63 (63A, 63B, 63C) changes. When the contact force between the tooth surfaces of the plurality of gears 63 changes, the rotational speed of the gears 63 changes. When the rotational speed of the gears 63 changes, the housing 70 vibrates. Vibrations of the housing 70 are transmitted to the base housing 30 via washers 17 and screws 16. Since the base housing 30 and the head housing 31 are secured by 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 housing 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.

[0162] Furthermore, when the brush 34 is subjected to impact, the housing 70 will not vibrate via the gear 63. When the vibration of the housing 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.

[0163] In this embodiment, the damping member 80 suppresses the transmission of vibrations from the housing 70 to the base housing 30. The damping member 80 also suppresses noise (gear noise and brush noise) generated from the base housing 30 and the head housing 31.

[0164] Figure 20 This is a cross-sectional view showing the vicinity of the first attenuation member 80A involved in this embodiment. Figure 21 This is a perspective view showing the first attenuation component 80A according to this embodiment. Figure 22 This is a side view showing the first attenuation member 80A according to this embodiment. Figure 20 , Figure 21 ,as well as Figure 22 These refer to the first attenuation component 80A. The first attenuation component 80A and the second attenuation component 80B have essentially the same structure. The first attenuation component 80A will be described below.

[0165] 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 flexural deformation. In this embodiment, the damping member 80 is made of rubber. Alternatively, the damping member 80 can be made of synthetic resin or a porous member like a sponge.

[0166] The attenuation component 80 is essentially cylindrical. The central axis CX of the attenuation component 80 extends vertically. The attenuation component 80 is disposed around the central axis CX. An opening 84 is provided at the center of the attenuation component 80 in a plane orthogonal to the central axis CX. The opening 84 is configured to penetrate both the upper and lower end faces of the attenuation component 80.

[0167] The attenuation 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.

[0168] The cylindrical portion 81 is substantially cylindrical. A first flange portion 82 is connected to the upper end of the cylindrical portion 81. The first flange portion 82 has a tapered portion 82A that slopes radially outward from the upper end of the cylindrical portion 81 toward the central axis CX, and a straight cylindrical portion 82B connected to the upper end of the tapered portion 82A. A second flange portion 83 is connected to the lower end of the cylindrical portion 81. The second flange portion 83 is substantially cylindrical (straight cylindrical).

[0169] In a plane orthogonal to the central axis CX, the dimension D2 (outer diameter) of the first flange portion 82 is greater than the dimension D1 (outer diameter) of the cylindrical portion 81. In a plane orthogonal to the central axis CX, the dimension D3 (outer diameter) of the second flange portion 83 is greater than the dimension D1 of the cylindrical portion 81. In a plane orthogonal to the central axis CX, the dimension D3 of the second flange portion 83 is greater 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 greater than the dimension H1 (height) of the cylindrical portion 81. In a direction parallel to the central axis CX, the dimension H3 (height) of the second flange portion 83 is greater than the dimension H1 (height) of the cylindrical portion 81. In a direction parallel to the central axis CX, the dimension H3 of the second flange portion 83 is less than the dimension H2 of the first flange portion 82.

[0170] The first flange portion 82 has a plurality of grooves 87 spaced apart in the circumferential direction. The grooves 87 are longer in a direction parallel to the central axis CX. The grooves 87 are provided throughout the tapered portion 82A and the cylindrical 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 and the number of inner grooves 87B are the same.

[0171] In this embodiment, the groove 87 is not provided in the second flange portion 83. Alternatively, the groove 87 may be provided in the second flange portion 83.

[0172] The attenuation component 80, the retaining portion 74 of the housing 70, the washer 17 of the screw 16, and the protrusion 301 of the base housing 30 are in contact respectively. At least a portion of the attenuation component 80 is located between the retaining portion 74 and the washer 17. At least a portion of the attenuation component 80 is located between the retaining portion 74 and the protrusion 301. Due to the intervention of the attenuation component 80, the retaining portion 74 and the washer 17 are separated from each other and do not come into contact. Due to the intervention of the attenuation component 80, the retaining portion 74 and the protrusion 301 are separated from each other and do not come into contact.

[0173] Washer 17 contacts the head of screw 16. The threaded portion of screw 16 engages with the threaded hole 302 of protrusion 301. Screw 16 contacts protrusion 301. Base housing 30 and head housing 31 are secured by a plurality of screws 19. In the vibration transmission path, washer 17, screw 16, base housing 30 including protrusion 301, and head housing 31 can be considered as a single component. In the following description, housing 70, including retaining portion 74 in contact with damping member 80, is appropriately referred to as first component P1, and washer 17, screw 16, base housing 30, and head housing 31 in contact with damping member 80 are appropriately collectively referred to as second component P2.

[0174] like Figure 20 As shown, a portion of the retaining portion 74 is disposed around the cylindrical portion 81. A portion of the retaining portion 74 is disposed around the conical portion 82A. The retaining portion 74 has an inner surface 76 disposed around the cylindrical portion 81 and a conical surface 77 disposed around the conical portion 82A.

[0175] like Figure 20 As shown, at least a portion of the protrusion 301 is inserted into the inner side of the cylindrical portion 81. The protrusion 301 has a large-diameter portion 303 and a small-diameter portion 304 protruding upward from the upper end of the large-diameter portion 303. In a plane orthogonal to the central axis CX, the size (outer diameter) of the large-diameter portion 303 is larger than the size (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 attenuation member 80. The central axis of the small-diameter portion 304 coincides with the central axis CX of the attenuation 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 protrusion 301 is disposed in the opening 84 of the attenuation member 80.

[0176] In this embodiment, the attenuation 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 be flexed in a reduced-diameter manner. The assembler of the suction head 3 inserts the attenuation member 80 into the opening 75 from below the holding portion 74 while the first flange portion 82 is flexed in a reduced-diameter manner. After the attenuation member 80 is inserted into the opening 75 of the holding portion 74, the small-diameter portion 304 of the protrusion 301 is inserted into the opening 84 from the lower end of the opening 84. The attenuation member 80 is positioned on the protrusion 301 by the step 305. The second flange portion 83 is clamped in the vertical direction by the lower surface 78 of the holding portion 74 and the upper surface of the large-diameter portion 303.

[0177] like Figure 20As shown, the attenuation component 80 has a first contact surface 85 that contacts the first component P1 and a second contact surface 86 that contacts the second component P2.

[0178] like Figure 20 As shown, the first contact surface 85 includes: the outer surface 85A of the cylindrical portion 81, the outer surface 85B (first surface) of the tapered portion 82A of the first flange portion 82, and the upper surface 85C (second surface) of the second flange portion 83. The outer surfaces 85A, 85B, and 85C face different directions from each other.

[0179] The 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 retaining portion 74.

[0180] The outer surface 85B of the tapered portion 82A is inclined upwards radially outwards from the central axis CX. The outer surface 85B is inclined relative to the central axis CX. The outer surface 85B contacts the tapered surface 77 of the retaining portion 74.

[0181] The upper surface 85C of the second flange portion 83 faces upward. The upper surface 85C of the second flange portion 83 is orthogonal to the central axis CX. The upper surface 85C contacts the lower surface 78 of the retaining portion 74.

[0182] like Figure 20 As shown, 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 different directions from each other.

[0183] The inner surface 86A of the cylindrical portion 81 faces radially inward toward 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 protrusion 301.

[0184] The upper surface 86B of the first flange 82 faces upward. The upper surface 86B is orthogonal to the central axis CX. The upper surface 86B is in contact with the lower surface of the washer 17.

[0185] The lower surface 86C of the second flange portion 83 faces downward. The lower surface 86C is orthogonal to the central axis CX. The lower surface 86C is in contact with the upper surface of the large diameter portion 303.

[0186] Figure 23This is a side view showing the second attenuation member 80B according to this embodiment. Similar to the first attenuation member 80A, the second attenuation 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 cylindrical portion 82B. A groove 87 is provided in the first flange portion 82.

[0187] In the second attenuation component 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.

[0188] <Operation of the cleaning device>

[0189] When the user operates the drive switch 15A to start driving the motor 41, the blower fan 42 rotates. Additionally, when the user operates the drive switch 15A to start driving the motor 61, the brush 34 rotates. The rotation of the blower fan 42 generates suction in the motor chamber 24. When the motor chamber 24 generates suction, a suction force is generated at the suction port 38 of the suction head 3. By generating suction force at the suction port 38, dust present on the surface to be cleaned is drawn into the suction port 38 along with air.

[0190] The user can move the cleaning device 1 by holding the handle 5. When the surface to be cleaned includes a carpet, the dust on the carpet can be collected by rotating the brush 34.

[0191] Dust drawn in by inlet 38 is transported to collection chamber 23 via connecting pipe 35, connecting pipe 4, and connecting pipe 28. A dust collection bag 9 is installed in collection chamber 23. The dust collection bag 9 is connected to connecting pipe 28 in collection chamber 23. Dust transported to collection chamber 23 is collected by dust collection bag 9. Air passing through dust collection bag 9 flows into flow path 25 via filter 26. Dust not completely collected by dust collection bag 9 is collected by filter 26. Air flowing into flow path 25 passes through sponge sheet 27 and then into motor chamber 24. Air flowing into motor chamber 24 flows into exhaust fan 42 via fan inlet of fan shroud 45. Air passing through exhaust fan 42 flows out to the left side of base 44 through an opening in base 44. Air flowing out to the left side of base 44 is discharged to the outside of the machine body 2 via exhaust port 8.

[0192] As described above, when the brush 34 rotates and taps the surface being cleaned, it receives an impact force. Due to this impact force, the housing 70, which is the first component P1, vibrates. In this embodiment, the damping component 80 is positioned between the first component P1, which includes the housing 70, and the second component P2, which includes the base housing 30 and the head housing 31. The damping component 80 attenuates the vibration transmitted from the first component P1 to the second component P2. By suppressing the vibration of the second component P2, noise generated from the suction head 3 is suppressed.

[0193] <Effect>

[0194] As explained above, in this embodiment, the attenuation member 80 attenuates the vibration of the suction head 3 having the first member P1 and the second member P2. The attenuation 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 includes at least two contact surfaces that contact the first member P1 and face opposite directions. In this embodiment, the first contact surface 85 includes an outer surface 85A, an outer surface 85B, and an upper surface 85C that contact the first member P1 and face opposite directions.

[0195] Based on the above configuration, since the first contact surface 85 includes an outer surface 85A, an outer surface 85B, and an upper surface 85C facing different directions, the contact area between the damping member 80 and the first member P1 is increased. Therefore, the damping member 80 can effectively dampen vibration. Because the vibration is damped, the noise generated from the suction head 3 is suppressed.

[0196] 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 drive unit 60 for rotating the brush 34, a housing 70 supporting at least a portion of the drive unit 60, and a damping member 80. The first component P1 includes the housing 70. The second component P2 includes: the base housing 30 and the head housing 31.

[0197] As described above, when the brush 34 rotates and taps the surface being cleaned, it receives an impact force. This impact force is transmitted to the third gear 63C via the first connecting member 18 and the second connecting member 29. Because the third gear 63C receives the impact force, the contact force between the tooth surfaces of the multiple gears 63 (63A, 63B, 63C) changes. When the contact force between the tooth surfaces of the multiple gears 63 changes, the rotational speed of the gears 63 changes. When the rotational speed of the gears 63 changes, the housing 70 vibrates. The vibration of the housing 70 is transmitted to the base housing 30 via the washer 17 and the screw 16. Since the base housing 30 and the head housing 31 are fixed by multiple screws 19, the vibration of the base housing 30 is transmitted to the head housing 31 via the screws 19. When the vibration of the housing 70 is 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.

[0198] Furthermore, when the brush 34 is subjected to impact, the housing 70 will not vibrate via the gear 63. When the vibration of the housing 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.

[0199] In this embodiment, the first component P1, including the housing 70, is the vibration source. When the vibration of the housing 70 is transmitted to the second component P2, including the base housing 30 and the head housing 31, noise (gear noise, brush noise) may be generated.

[0200] When the first component P1 is the vibration source, the damping component 80 can attenuate the vibration transmitted from the first component P1 to the second component P2. Since the vibration of the second component P2 is suppressed, the noise generated from the suction head 3 is also suppressed. Because the first contact surface 85 includes an outer surface 85A, an outer surface 85B, and an upper surface 85C facing opposite directions, even if the first component P1 vibrates in opposite directions, the damping component 80 can effectively attenuate the vibration of the first component P1 in multiple vibration directions. Since the vibration of the second component P2 is suppressed, the noise generated from the suction head 3 is also suppressed.

[0201] That is, when the housing 70 of the drive unit 60 is the vibration source, the damping component 80 can dampen the vibration transmitted from the housing 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.

[0202] Furthermore, when the second component P2 is the vibration source, the attenuation component 80 can attenuate the vibration transmitted from the second component P2 to the first component P1. Since the vibration of the first component P1 is suppressed, the noise generated from the suction head 3 is also suppressed. The first contact surface 85 includes an outer surface 85A, an outer surface 85B, and an upper surface 85C facing different directions. Therefore, even if the directions of vibrations input to the first component P1 are different, the attenuation component 80 can effectively attenuate vibrations in multiple vibration directions input to the first component P1. Since the vibration of the first component P1 is suppressed, the noise generated from the suction head 3 is also suppressed.

[0203] In this embodiment, the second contact surface 86 includes at least two contact surfaces that contact the second component P2 and face 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 86C that contact the second component P2 and face different directions from each other.

[0204] Based on the above configuration, when the first component P1 is the vibration source, since the second contact surface 86 includes an inner surface 86A, an upper surface 86B, and a lower surface 86C facing different directions, the attenuation component 80 can effectively attenuate vibrations in multiple vibration directions even if the vibrations input to the second component P2 are in different directions.

[0205] Furthermore, when the second component P2 is the vibration source, since the second contact surface 86 includes an inner surface 86A, an upper surface 86B, and a lower surface 86C facing different directions, the damping component 80 can effectively dampen vibrations in multiple vibration directions even if the second component P2 vibrates in different directions.

[0206] In this embodiment, the attenuation member 80 includes a cylindrical portion 81. The first contact surface 85 includes the outer surface 85A of the cylindrical portion 81. The second contact surface 86 includes the inner surface 86A of the cylindrical portion 81.

[0207] According to the above configuration, when the first component P1 is in contact with the outer surface 85A of the cylindrical portion 81 and the second component P2 is in contact with the inner surface 86A of the cylindrical portion 81, the damping component 80 can dampen the vibration transmitted from one component, the first component P1, to the other component, the second component P2.

[0208] In this embodiment, the second contact surface 86 includes: the upper surface 86B and the lower surface 86C of the attenuation component 80.

[0209] According to the above configuration, when the second component P2 is in contact with the upper surface 86B and the lower surface 86C of the damping component 80, the damping component 80 can dampen the vibration transmitted from the first component P1 to the second component P2.

[0210] In this embodiment, the attenuation member 80 includes an opening 84 for at least a portion of the second member P2 to be disposed.

[0211] According to the above configuration, when at least a portion of the second component P2 is disposed in the opening 84 of the damping component 80, the damping component 80 is able to dampen the vibration transmitted from the first component P1 to the second component P2.

[0212] In this embodiment, the attenuation 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 serving as a first surface of the first flange portion 82, and an upper surface 85C serving as 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 serving as a third surface of the first flange portion 82, and a lower surface 86C serving as a fourth surface of the second flange portion 83.

[0213] According to the above configuration, the damping component 80 is able to dampen the vibration transmitted from the first component P1 to the second component P2.

[0214] In this embodiment, the first flange portion 82 has a plurality of grooves 87 that are spaced apart in the circumferential direction.

[0215] According to the above configuration, the first flange portion 82 can easily flex and deform radially through the groove 87, thus the damping member 80 can effectively dampen vibration. Furthermore, when the damping member 80 is inserted from the lower side of the holding portion 74 into the opening 75 provided in the housing 70 which is the first member P1, since the first flange portion 82 can easily flex and deform in a reduced-diameter manner, it is easy to insert the damping member 80 from the lower side of the holding portion 74 into the opening 75.

[0216] Additionally, the groove 87 can be provided in the second flange portion 83. When the attenuation member 80 is inserted into the opening 75 from above the holding portion 74, the second flange portion 83 can be easily flexed and deformed in a reduced-diameter manner, thus making it easy to insert the attenuation member 80 into the opening 75 from above the holding portion 74.

[0217] In this embodiment, the attenuation component 80 is disposed around the fixing component, i.e., the screw 16, which fixes the first component P1 and the second component P2.

[0218] According to the above configuration, with the first component P1 and the second component P2 fixed by screws 16, the damping component 80 is able to dampen the vibration transmitted from the first component P1 to the second component P2.

[0219] In this embodiment, the attenuation member 80 has a cylindrical portion 81. The housing 70 has a retaining portion 74 disposed around the cylindrical portion 81. The base housing 30 has a protrusion 301 that is inserted into the inside of the cylindrical portion 81.

[0220] According to the above configuration, the cylindrical portion 81 of the damping member 80 can dampen vibrations transmitted from the holding portion 74 of the housing 70 to the protrusion 301 of the base housing 30. Since the vibration of the base housing 30 is suppressed, the noise generated from the suction head 3 is suppressed.

[0221] 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 housing 70 supports the gear 63.

[0222] According to the above configuration, when the housing 70 of the gear 63 is the vibration source, the damping component 80 can attenuate the vibration transmitted from the housing 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.

[0223] 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 the rotational force generated by the motor 61 to the brush 34, a housing 70 supporting the power transmission mechanism 62, and a damping member 80. The first member P1 includes the housing 70, and the second member P2 includes the base housing 30.

[0224] According to the above configuration, when the housing 70 of the power transmission mechanism 62 is a vibration source, the damping component 80 can attenuate the vibration transmitted from the housing 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.

[0225] [Second Implementation]

[0226] The second embodiment will be described. In the following description, the same or equivalent components as those in the above embodiment will be given the same reference numerals, and the description of the components will be simplified or omitted.

[0227] Figure 24 This is a perspective view showing the inhalation head 103 of this embodiment as viewed from the left front. Figure 25This is a perspective view showing the interior of the suction head 103 as described in this embodiment, viewed from the left front. Figure 26 This is a cross-sectional view showing the interior of the suction head 103 according to this embodiment as viewed from the left front, which is equivalent to... Figure 25 The H-H line section is shown in the view. Figure 27 This is a cross-sectional view showing the interior of the suction head 103 according to this embodiment as viewed from the left front, which is equivalent to... Figure 25 The section along line I-I in the view is shown. Figure 28 This is a cross-sectional view showing the interior of the suction head 103 according to this embodiment as viewed from the left front, which is equivalent to... Figure 25 The J-J line section is shown in the view. Figure 29 This is a perspective view showing a portion of the interior of the suction head 103 according to this embodiment, viewed from the left front, which is equivalent to... Figure 25 A magnified portion of the image. Figure 30 This is an exploded perspective view showing a portion of the interior of the suction head 103 according to this embodiment, viewed from the left front. Figure 29 An exploded 3D diagram. Figure 31 This is a front view showing a portion of the interior of the suction head 103 according to this embodiment, equivalent to a view from the front. Figure 25 The diagram of part K. Figure 32 This is a cross-sectional view showing a portion of the suction head 103 according to this embodiment, equivalent to... Figure 29 The L-L line section is shown in the view. Figure 33 This is a cross-sectional view showing a portion of the suction head 103 according to this embodiment, equivalent to... Figure 29 The M-M line section is shown in the view. Figure 34 This is a cross-sectional view showing the vicinity of the attenuation member 180 involved in this embodiment, which is equivalent to showing... Figure 33 A magnified portion of the image. Figure 35 This is a perspective view showing the attenuation component 180 involved in this embodiment. Figure 36 This is a side view showing the attenuation component 180 involved in this embodiment.

[0228] The suction head 103 includes: a base housing 130 having a suction port 138; a head housing 131 disposed above the base housing 130; a buffer 132 covering the front of the base housing 130 and the front of the head housing 131; a brush 134 disposed at the suction port 138; a connecting pipe 135 connected to the suction port 138; a travel wheel 136 and an auxiliary wheel 137 disposed at the bottom of the base housing 130; a drive unit 160 for rotating the brush 134; a housing 170 supporting at least a portion of the drive unit 160; and a damping member 180 for damping the vibration of the suction head 103.

[0229] In this embodiment, the controller 107 is disposed on the intake head 103. The battery mounting part 110 for mounting the battery pack 111 is disposed on the outside of the intake head 103. The battery mounting part 110 is disposed at a position that is higher than the intake head 103.

[0230] The drive unit 160 is supported on the base housing 130 and the head housing 131. The drive unit 160 includes a motor 161 and a power transmission mechanism 162 that transmits the rotational force generated by the motor 161 to the brush 134. The housing 170 supports the motor 161.

[0231] Motor 161 is an internal rotor type DC brushless motor. Motor 161 is positioned further rearward than brush 134. Motor 161 has an output shaft 163. In this embodiment, output shaft 163 is the rotor shaft of motor 161. The rotation axis of output shaft 163 extends in the left-right direction. Figure 26 As shown, the right side of the output shaft 163 is rotatably held in bearing 163R. The left side of the output shaft 163 is rotatably held in bearing 163L. Bearings 163R and 163L are held in housing 170.

[0232] In this embodiment, the blower fan 142 is fixed to the right end of the output shaft 163. A fan shroud 145 is disposed around the blower fan 142. The blower fan 142 generates suction at the intake port 138. The blower fan 142 rotates due to the rotational force generated by the motor 161. The blower fan 142 rotates together with the output shaft 163 as the output shaft rotates. The rotation of the blower fan 142 generates suction at the intake port 138.

[0233] 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.

[0234] The pulley 165 is fixed to the left end of the brush 134. The pulley 165 is housed in the housing 90. The housing 90 supports the pulley 165. Figure 27 As shown, a bearing retaining member 91 is disposed inside the housing 90. The bearing retaining member 91 is a rod-shaped component. The bearing retaining member 91 is fixed to the housing 90. A bearing 92 is disposed around the bearing retaining member 91. The bearing retaining member 91 holds the bearing 92. The pulley 165 is supported by the bearing 92. The housing 90 supports the pulley 165 for rotation by means of the bearing retaining member 91 and the bearing 92.

[0235] Belt 164 is annular. Belt 164 is a so-called annular belt. Belt 164 is mounted on the left end of output shaft 163 and pulley 165. When output shaft 163 rotates, belt 164 rotates. When belt 164 rotates, pulley 165 rotates. When pulley 165 rotates, brush 134 rotates together with pulley 165.

[0236] The housing 170 supports the motor 161. The housing 170 has a so-called split-half structure. For example... Figure 29 As shown, the housing 170 includes a lower housing 171 and an upper housing 172 disposed on the upper side of the lower housing 171.

[0237] 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 housing 170.

[0238] The housing 170 has a retaining portion 174. The retaining portion 174 is annular. Four retaining portions 174 are provided on the periphery of the housing 170. Figure 29 As shown, in this embodiment, the lower retaining portion 174A provided on the periphery of the lower housing 171 and the upper retaining portion 174B provided on the periphery of the upper housing 172 are combined to form the retaining portion 174.

[0239] The retaining portion 174 is annular. As described above, four protrusions 1301 and four retaining portions 174 are provided. The four protrusions 1301 and the four retaining portions 174 are respectively aligned in position. The protrusions 1301 are inserted into the inside of the retaining portions 174.

[0240] The suction head 103 includes a screw 116 for securing the housing 170 and the base housing 130. The screw 116 is a fixing component for securing the housing 170 and the base housing 130. The protrusion 1301 and the retaining portion 174 each function as a threaded boss. The retaining portion 174 has an opening 175 for inserting the screw 116. The protrusion 1301 has a threaded hole 1302 for inserting the threaded portion of the screw 116. A washer 117 is disposed at the lower part of the head of the screw 116.

[0241] The damping member 180 is disposed at the boundary between the base housing 130 and the housing 170. The damping member 180 is disposed at the boundary between the protrusion 1301 and the retaining portion 174. The damping member 180 is disposed around the screw 116. The damping member 180 suppresses the transmission of vibrations from the housing 170 to the base housing 130.

[0242] 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 flexural deformation. In this embodiment, the damping member 180 is made of rubber. Alternatively, the damping member 180 can be made of synthetic resin or a porous member like a sponge.

[0243] The attenuation member 180 is essentially cylindrical. The central axis CX of the attenuation member 180 extends vertically. The attenuation member 180 is disposed around the central axis CX. An opening 184 is provided at the center of the attenuation member 180 in a plane orthogonal to the central axis CX. The opening 184 is configured to penetrate both the upper and lower end faces of the attenuation member 180.

[0244] The attenuation 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.

[0245] The cylindrical portion 181 is substantially cylindrical. A first flange portion 182 is connected to the upper end of the cylindrical portion 181. The first flange portion 182 has a tapered portion 182A that slopes radially outward from the upper end of the cylindrical portion 181 toward the central axis CX, and a straight cylindrical portion 182B connected to the upper end of the tapered portion 182A. A second flange portion 183 is connected to the lower end of the cylindrical portion 181. The second flange portion 183 has a tapered portion 183A that slopes radially outward from the lower end of the cylindrical portion 181 toward the central axis CX, and a straight cylindrical portion 183B connected to the lower end of the tapered portion 183A.

[0246] In a plane orthogonal to the central axis CX, the outer diameter (D2) of the first flange portion 182 is equal to the outer diameter (D3) of the second flange portion 183. In the same plane, the dimensions D2 of the first flange portion 182 and D3 of the second flange portion 183 are greater than the dimension D1 of the cylindrical portion 181. In a direction parallel to the central axis CX, the height (H2) of the first flange portion 182 is equal to the height (H3) of the second flange portion 183. In the same direction, the height (H1) of the cylindrical portion 181 is less than the height (H2) of the first flange portion 182 and H3 of the second flange portion 183.

[0247] 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 throughout the tapered portion 182A and the cylindrical 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.

[0248] The second flange portion 183 has a plurality of grooves 188 spaced apart in the circumferential direction. The grooves 188 are longer in a direction parallel to the central axis CX. The grooves 188 extend across both the tapered portion 183A and the cylindrical portion 183B. Each groove 188 includes an outer groove 188A recessed radially inward from the outer surface of the second flange portion 183, and an inner groove 188B recessed radially outward from the inner surface of the second flange portion 183. The outer grooves 188A are spaced equally in the circumferential direction. The inner grooves 188B are spaced equally in the circumferential direction. An inner groove 188B is provided between a pair of outer grooves 188A in the circumferential direction. The number of outer grooves 188A is the same as the number of inner grooves 188B.

[0249] In this embodiment, the shape and size of the first flange portion 182 are the same as those of the second flange portion 183. The attenuation member 180 has a symmetrical structure.

[0250] The attenuation component 180, the retaining portion 174 of the housing 170, the washer 117 of the screw 116, and the protrusion 1301 of the base housing 130 respectively come into contact. At least a portion of the attenuation component 180 is located between the retaining portion 174 and the washer 117. At least a portion of the attenuation component 180 is located between the retaining portion 174 and the protrusion 1301. Due to the intervention of the attenuation component 180, the retaining portion 174 and the washer 117 are separated from each other and do not come into contact. Due to the intervention of the attenuation component 180, the retaining portion 174 and the protrusion 1301 are also separated from each other and do not come into contact.

[0251] Washer 117 contacts the head of screw 116. The threaded portion of screw 116 engages with the threaded hole 1302 of protrusion 1301. Screw 116 contacts protrusion 1301. In the vibration transmission path, washer 117, screw 116, and protrusion 1301 can be considered as a single component. In the following description, the retaining portion 174 that contacts damping member 180 is appropriately referred to as first component Q1, and washer 117, screw 116, and protrusion 1301 that contact damping member 180 are appropriately collectively referred to as second component Q2.

[0252] like Figure 34 As shown, a portion of the retaining portion 174 is disposed around the cylindrical portion 181. A portion of the retaining portion 174 is disposed around the conical portion 182A. A portion of the retaining portion 174 is disposed around the conical portion 183A. The retaining portion 174 has: an inner surface 176 disposed around the cylindrical portion 181, a conical surface 177 disposed around the conical portion 182A, and a conical surface 178 disposed around the conical portion 183A.

[0253] like Figure 34 As shown, at least a portion of the protrusion 1301 is inserted into the inner side of the cylindrical portion 181. The protrusion 1301 has a large-diameter portion 1303 and a small-diameter portion 1304 protruding upward from the upper end of the large-diameter portion 1303. In a plane orthogonal to the central axis CX, the size (outer diameter) of the large-diameter portion 1303 is larger than the size (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 attenuation member 180. The central axis of the small-diameter portion 1304 coincides with the central axis CX of the attenuation 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 protrusion 1301 is disposed in the opening 184 of the attenuation member 180.

[0254] In this embodiment, the attenuation member 180 is inserted into the opening 175 from either the lower or upper side of the holding portion 174. As described above, the first flange portion 182 is provided with a plurality of grooves 187, and the second flange portion 183 is provided with a plurality of grooves 188. The grooves 187 allow the first flange portion 182 to flex and deform in a reduced-diameter manner. The grooves 188 allow the second flange portion 183 to flex and deform in a reduced-diameter manner. The assembler of the suction head 103 inserts the attenuation member 180 into the opening 175 from below the holding portion 174 while the first flange portion 182 is flexed and deformed in a reduced-diameter manner. Alternatively, the assembler of the suction head 103 may also insert the attenuation member 180 into the opening 175 from above the holding portion 174 while the second flange portion 183 is flexed and deformed in a reduced-diameter manner. After the attenuation member 180 is inserted into the opening 175 of the retaining portion 174, the small-diameter portion 1304 of the protrusion 1301 is inserted into the opening 184 from its lower end. The attenuation member 180 is positioned in the protrusion 1301 via the step 1305. The first flange portion 182 is clamped in the vertical direction by the tapered surface 177 of the retaining portion 174 and the lower surface of the washer 117. The second flange portion 183 is clamped in the vertical direction by the tapered surface 178 of the retaining portion 174 and the upper surface of the large-diameter portion 1303.

[0255] like Figure 34As shown, the attenuation component 180 has a first contact surface 185 that contacts the first component Q1 and a second contact surface 186 that contacts the second component Q2.

[0256] like Figure 34 As shown, the first contact surface 185 includes: the outer surface 185A of the cylindrical portion 181, the outer surface 185B (first surface) of the tapered portion 182A of the first flange portion 182, and the outer surface 185C (second surface) of the tapered portion 183A of the second flange portion 183. The outer surfaces 185A, 185B, and 185C face different directions from each other.

[0257] The 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 retaining portion 174.

[0258] The outer surface 185B of the tapered portion 182A is inclined upwards radially outwards from the central axis CX. The outer surface 185B is inclined relative to the central axis CX. The outer surface 185B contacts the tapered surface 177 of the retaining portion 174.

[0259] The outer surface 185C of the tapered portion 183A slopes downward radially outward from the central axis CX. The outer surface 185C is inclined relative to the central axis CX. The outer surface 185C contacts the tapered surface 178 of the retaining portion 174.

[0260] like Figure 34 As shown, 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 different directions from each other.

[0261] The inner surface 186A of the cylindrical portion 181 faces radially inward toward 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 protrusion 1301.

[0262] The upper surface 186B of the first flange 182 faces upward. The upper surface 186B is orthogonal to the central axis CX. The upper surface 186B is in contact with the lower surface of the washer 17.

[0263] The lower surface 186C of the second flange portion 183 faces downward. The lower surface 186C is orthogonal to the central axis CX. The lower surface 186C is in contact with the upper surface of the large diameter portion 303.

[0264] As explained above, in this embodiment, the attenuation member 180 attenuates the vibration of the suction head 103 having the first member Q1 and the second member Q2. The attenuation 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 includes an outer surface 185A, an outer surface 185B, and an outer surface 185C that contact the first member Q1 and face opposite directions.

[0265] According to the above configuration, the first contact surface 185 includes an outer surface 185A, an outer surface 185B, and an outer surface 185C facing different directions. Therefore, the contact area between the damping member 180 and the first member Q1 is increased, so the damping member 180 can effectively dampen vibration. Since the vibration is damped, the noise generated from the suction head 103 is suppressed.

[0266] When the first component Q1 is the vibration source, the damping component 180 can attenuate the vibration transmitted from the first component Q1 to the second component Q2. Since the vibration of the second component Q2 is suppressed, the noise generated from the suction head 103 is also suppressed. Because the first contact surface 185 includes outer surfaces 185A, 185B, and 185C facing opposite directions, even if the first component Q1 vibrates in opposite directions, the damping component 180 can effectively attenuate the vibration of the first component Q1 in multiple vibration directions. Since the vibration of the second component Q2 is suppressed, the noise generated from the suction head 103 is also suppressed.

[0267] Furthermore, when the second component Q2 is the vibration source, the attenuation component 180 can attenuate the vibration transmitted from the second component Q2 to the first component Q1. Since the vibration of the first component Q1 is suppressed, the noise generated from the suction head 103 is also suppressed. Because the first contact surface 185 includes outer surfaces 185A, 185B, and 185C facing different directions, even if the directions of vibration input to the first component Q1 are different, the attenuation component 180 can effectively attenuate vibrations input to the first component Q1 in multiple vibration directions. Since the vibration of the first component Q1 is suppressed, the noise generated from the suction head 103 is also suppressed.

[0268] In this embodiment, the second contact surface 186 includes an inner surface 186A, an upper surface 186B, and a lower surface 186C that are in contact with the second component Q2 and face different directions from each other.

[0269] Based on the above configuration, when the first component Q1 is the vibration source, since the second contact surface 186 includes an inner surface 186A, an upper surface 186B, and a lower surface 186C facing different directions, the attenuation component 180 can effectively attenuate vibrations in multiple vibration directions even if the vibrations input to the second component Q2 are in different directions.

[0270] Furthermore, when the second component 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 facing different directions, the damping component 180 can effectively dampen vibrations in multiple vibration directions even if the second component Q2 vibrates in different directions.

[0271] In this embodiment, the attenuation member 180 includes a cylindrical portion 181. The first contact surface 185 includes the outer surface 185A of the cylindrical portion 181. The second contact surface 186 includes the inner surface 186A of the cylindrical portion 181.

[0272] According to the above configuration, when the first component Q1 is in contact with the outer surface 185A of the cylindrical portion 181 and the second component Q2 is in contact with the inner surface 186A of the cylindrical portion 181, the damping component 180 can dampen the vibration transmitted from the first component Q1 to the second component Q2.

[0273] In this embodiment, the second contact surface 186 includes: the upper surface 186B and the lower surface 186C of the attenuation component 180.

[0274] According to the above configuration, when the second component Q2 is in contact with the upper surface 186B and the lower surface 186C of the damping component 180, the damping component 180 can dampen the vibration transmitted from the first component Q1 to the second component Q2.

[0275] In this embodiment, the attenuation member 180 includes an opening 184 for at least a portion of the second member Q2 to be disposed.

[0276] According to the above configuration, when at least a portion of the second component Q2 is disposed in the opening 184 of the damping component 180, the damping component 180 is able to dampen the vibration transmitted from the first component Q1 to the second component Q2.

[0277] In this embodiment, the attenuation member 180 includes: a cylindrical portion 181, a first flange portion 182 connected to one end of the cylindrical portion 181, and a second flange portion 183 connected to the other end of the cylindrical portion 181. The first contact surface 185 includes: an outer surface 185A of the cylindrical portion 181, an outer surface 185B serving as a first surface of the first flange portion 182, and an outer surface 185C serving as a second surface of the second flange portion 183. The second contact surface 186 includes: an inner surface 186A of the cylindrical portion 181, an upper surface 186B serving as a third surface of the first flange portion 182, and a lower surface 186C serving as a fourth surface of the second flange portion 183.

[0278] According to the above configuration, the damping component 180 is able to dampen the vibration transmitted from the first component Q1 to the second component Q2.

[0279] 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.

[0280] According to the above configuration, the first flange portion 182 can easily flex and deform radially through the groove 187, thus the damping member 180 can effectively dampen vibration. Furthermore, when the damping member 180 is inserted from the lower side of the holding portion 174 into the opening 175 provided in the housing 170 which is the first component Q1, the first flange portion 182 can easily flex and deform in a reduced-diameter manner, thus making it easy to insert the damping member 180 from the lower side of the holding portion 174 into the opening 175.

[0281] Furthermore, according to the above configuration, the second flange portion 183 can easily flex and deform radially through the groove 188, thus the damping member 180 can effectively dampen vibration. Additionally, when the damping member 180 is inserted from the upper side of the holding portion 174 into the opening 175 provided in the housing 170 which serves as the first component Q1, the second flange portion 183 can easily flex and deform in a reduced-diameter manner, thus facilitating the insertion of the damping member 180 from the upper side of the holding portion 174 into the opening 175.

[0282] In this embodiment, the attenuation member 180 is disposed around the fixing member, i.e., the screw 116, which fixes the first member Q1 and the second member Q2.

[0283] According to the above configuration, with the first component Q1 and the second component Q2 fixed by screws 116, the damping component 180 is able to dampen the vibration transmitted from the first component Q1 to the second component Q2.

[0284] In this embodiment, the attenuation member 180 has a cylindrical portion 181. The housing 170 has a retaining portion 174 disposed around the cylindrical portion 181. The base housing 130 has a protrusion 1301 inserted into the inside of the cylindrical portion 181.

[0285] According to the above configuration, the cylindrical portion 181 of the damping member 180 can dampen vibrations transmitted from the holding portion 174 of the housing 170 to the protrusion 1301 of the base housing 130. Since the vibration of the base housing 130 is suppressed, the noise generated from the suction head 103 is suppressed.

[0286] In this embodiment, the drive unit 60 has a motor 161. The housing 170 supports the motor 161.

[0287] According to the above configuration, when the housing 170 of the motor 161 is the vibration source, the damping component 180 can attenuate the vibration transmitted from the housing 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.

[0288] 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 for transmitting the rotational force generated by the motor 161 to the brush 134, a housing 170 supporting the motor 161, and a damping member 180. The first component Q1 includes the housing 170, and the second component Q2 includes the base housing 130.

[0289] According to the above configuration, when the housing 170 of the motor 161 is the vibration source, the damping component 180 can attenuate the vibration transmitted from the housing 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.

[0290] [Third Implementation]

[0291] The third embodiment will be described. In the following description, the same reference numerals are used for components that are the same as or equivalent to those in the embodiments described above, and the description of these components is simplified or omitted.

[0292] The third embodiment is a variation of the second embodiment. Figure 37 This is a perspective view showing a portion of the interior of the suction head 203 as described in this embodiment, viewed from the left front. Figure 38 This is an exploded perspective view showing a portion of the interior of the suction head 203 according to this embodiment, viewed from the left front. Figure 39This is a cross-sectional view showing a portion of the suction head 203 according to this embodiment, equivalent to... Figure 37 The N-N line section is shown in the view.

[0293] The suction head 203 includes: a drive unit 260 for rotating the brush 134, a housing 170 for supporting at least a portion of the drive unit 260, and a damping member 180 for damping the vibration of the suction head 203.

[0294] 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 housing 170 supports the motor 261.

[0295] Motor 261 is an internal rotor type DC brushless motor. For example... Figure 39 As shown, motor 261 includes a stator 247, a rotor 248, and a rotor shaft 263. The stator 247 includes a stator core 247A with multiple 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 multiple 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 longer in the left-right direction. The rotor 248 and the rotor shaft 263 rotate together about the rotation axis of motor 261. The rotation axis extends in the left-right direction.

[0296] In this embodiment, a cooling fan 250 is fixed to the left end of the rotor shaft 263. An air inlet 170A is formed in the center of the housing 170 in the left-right direction, and an exhaust port 170B is formed on the left side of the housing 170. The exhaust port 170B is positioned around the cooling fan 250. The cooling fan 250 rotates when the rotor shaft 263 rotates. As the cooling fan 250 rotates, air flows into the inside of the housing 170 from the air inlet 170A. The air flowing into the inside of the housing 170 from the air inlet 170A circulates around the motor 261 and is then exhausted from the exhaust port 170B. The motor 261 is cooled by the air circulating around it.

[0297] like Figure 39As shown, an output shaft 264 is fixed to the left end of the rotor shaft 263. The output shaft 264 has a hole for inserting the left end of the rotor shaft 263. 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 are fixed. Alternatively, the rotor shaft 263 and the output shaft 264 can be integrated (a single component). The right side of the rotor shaft 263 is rotatably held in bearing 263R. The left side of the output shaft 264 is rotatably held in bearing 263L. Bearings 263R and 263L are held in housing 170.

[0298] The power transmission mechanism 262 transmits the rotational force of the rotor shaft 263 of the motor 261 to the brush 134. In this embodiment, the power transmission mechanism 262 includes: an output shaft 264 connected to the rotor shaft 263 of the motor 261, a transfer shaft 265 connected to the brush 134 by means of a belt 164 and a pulley 165, and attenuation members 280 that contact the output shaft 264 and the transfer shaft 265 respectively.

[0299] The intermediate shaft 265 is positioned further to the left than the output shaft 264. The right side of the intermediate shaft 265 is rotatably held in bearing 265R. The left side of the intermediate shaft 265 is rotatably held in bearing 265L. Bearings 265R and 265L are held in the head housing 231.

[0300] A portion of belt 164 is mounted on central shaft 265. Similar to the second embodiment described above, a portion of belt 164 is mounted on pulley 165, which is fixed to brush 134. The structure of belt 164 and pulley 165 is the same as that described in the second embodiment above.

[0301] The output shaft 264 and the intermediate shaft 265 are connected by a damping member 280. The damping member 280 functions as a coupling connecting the output shaft 264 and the intermediate shaft 265. When the rotor shaft 263 rotates, causing the output shaft 264 to rotate, the intermediate shaft 265, connected to the output shaft 264 by the damping member 280, will also rotate. When the intermediate shaft 265 rotates, the belt 164 will rotate. When the belt 164 rotates, the pulley 165 will rotate. When the pulley 165 rotates, the brush 134 will rotate together with the pulley 165.

[0302] Figure 40 This is a perspective view showing the rotor shaft 263, output shaft 264, attenuation component 280, and intermediate shaft 265 involved in this embodiment, viewed from the left front. Figure 41This is an exploded perspective view showing the rotor shaft 263, output shaft 264, attenuation component 280, and intermediate shaft 265 involved in this embodiment, viewed from the left front. Figure 42 This is a perspective view showing the rotor shaft 263, output shaft 264, attenuation component 280, and intermediate shaft 265 involved in this embodiment, viewed from the left rear. Figure 43 This is a diagram showing the transfer shaft 265 involved in this embodiment from the right side. Figure 44 This is a perspective view showing the attenuation component 280 involved in this embodiment as viewed from the right rear. Figure 45 This is a diagram showing the attenuation component 280 as described in this embodiment, viewed from the right side.

[0303] 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 flexural deformation. In this embodiment, the damping member 280 is made of rubber. Alternatively, the damping member 280 can be made of synthetic resin or a porous member like a sponge.

[0304] The attenuation member 280 is essentially plate-shaped (block-shaped). The attenuation member 280 has a right surface 283 (one side) and a left surface 284 (another side) facing the opposite direction to the right surface 283. A pair of first recesses 281 are provided on the right surface 283 of the attenuation member 280. A pair of second recesses 282 are provided on the left surface 284 of the attenuation member 280.

[0305] The first recess 281 has: a bottom surface 281A facing to the right, a first inner surface 281B parallel to the central axis of the output shaft 264, a second inner surface 281C, and a third inner surface 281D.

[0306] The second recess 282 has: a bottom surface 282A facing the left, a first inner surface 282B parallel to the central axis of the central axis 265, a second inner surface 282C, and a third inner surface 282D.

[0307] The output shaft 264 includes a base plate portion 266 and a pair of first cam portions 271 protruding to the left from the base plate portion 266. The first cam portions 271 are inserted into a first recess 281. The first cam portions 271 have an end face 271A that contacts the bottom surface 281A, a first outer face 271B that contacts the first inner face 281B, a second outer face 271C that contacts the second inner face 281C, and a third outer face 271D that contacts the third inner face 281D. In addition, the left surface of the base plate portion 266 contacts the right surface 283 of the attenuation member 280.

[0308] The transfer shaft 265 includes a base plate 267 and a pair of second cam portions 272 protruding to the right from the base plate 267. The second cam portions 272 are inserted into a second recess 282. The second cam portions 272 have an end face 272A that contacts the bottom surface 282A, a first outer surface 272B that contacts the first inner surface 282B, a second outer surface 272C that contacts the second inner surface 282C, and a third outer surface 272D that contacts the third inner surface 282D. In addition, the right surface of the base plate 267 contacts the left surface 284 of the attenuation member 280.

[0309] With output shaft 264 considered as component R1 and intermediate shaft 265 considered as component R2, attenuation member 280 is positioned between component R1 and component R2 in a manner that prevents component R1 from contacting component R2. Component R1 and component R2 are connected by attenuation member 280. The rotational force of component R1 is transmitted to component R2 via attenuation member 280.

[0310] The attenuation component 280 includes a first contact surface that contacts the first component R1 and a second contact surface that contacts the second component R2.

[0311] The first contact surface of the attenuation member 280 includes: a bottom surface 281A that contacts the end face 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 different directions. Additionally, the first contact surface of the attenuation member 280 includes a right surface 283 that contacts the left surface of the base plate portion 266.

[0312] The second contact surface of the attenuation member 280 includes: a bottom surface 282A that contacts the end face 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 different directions. Additionally, the second contact surface of the attenuation member 280 includes a left surface 284 that contacts the right surface of the base plate portion 266.

[0313] As explained above, in this embodiment, the attenuation member 280 includes: a surface, namely a right surface 283; another surface, namely a left surface 284, facing the opposite direction to the right surface 283; a first recess 281 provided on the right surface 283; and a second recess 282 provided on the left surface 284. The first contact surface of the attenuation member 280 that contacts the first member R1 includes: the bottom surface 281A of the first recess 281; the first inner surface 281B of the first recess 281; the second inner surface 281C of the first recess 281; and the third inner surface 281D of the first recess 281. The second contact surface of the attenuation member 280 that contacts the second member R2 includes: the bottom surface 282A of the second recess 282; the first inner surface 282B of the second recess 282; the second inner surface 282C of the second recess 282; and the third inner surface 282D of the second recess 282.

[0314] According to the above configuration, the damping member 280 is capable of attenuating the vibration transmitted from the first member R1 to the second member R2. In addition, the damping member 280 is capable of transmitting the rotational force of the first member R1 to the second member R2 while allowing the relative positions of the first member R1 and the second member R2 to change.

[0315] Similar to the second embodiment described above, in this embodiment, the housing 170 is supported on the protrusion 1301 of the base housing 130 by means of the damping member 180. Through the deformation (elastic deformation or flexural deformation) of the damping member 180, the housing 170 may swing (move) relative to the base housing 130. Because of the swinging of the housing 170, it is possible for the first component R1 (output shaft 264) to swing vertically relative to the second component R2 (relay shaft 265), or for the first component R1 (output shaft 264) to swing in the direction of inclination relative to the central axis of the second component R2 (relay shaft 265).

[0316] The damping member 280 functions as a coupling that connects the first component R1 and the second component R2 into a relatively oscillating joint. The damping member 280 allows for a change in the relative position of the first component R1 and the second component R2. The damping member 280 is capable of transmitting the rotational force of the first component R1 to the second component R2 while allowing for this change in relative position.

[0317] In this embodiment, the suction head 203 includes: a base housing 130 having a suction port 138, a brush 134 disposed in the suction port 138, a drive unit 260 for rotating 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 a transfer shaft 265 connected to the brush 134. The first component R1 includes the output shaft 264, and the second component R2 includes the transfer shaft 265.

[0318] Based on the above configuration, when the output shaft 264 is the vibration source, the damping component 280 can attenuate the vibration transmitted from the output shaft 264 to the intermediate shaft 265. Since the vibration of the intermediate shaft 265 is suppressed, the noise generated from the suction head 203 is also suppressed. Furthermore, the damping component 280 can transmit the rotational force of the output shaft 264 to the intermediate shaft 265 while allowing changes in the relative position of the output shaft 264 and the intermediate shaft 265.

[0319] In this embodiment, the attenuation member 280 has: a surface, namely a right surface 283; another surface, namely a left surface 284, facing the opposite direction to the right surface 283; a first recess 281 provided on the right surface 283; and a second recess 282 provided on the left surface 284. The output shaft 264 has: a first cam portion 271 inserted into the first recess 281. The intermediate shaft 265 has: a second cam portion 272 inserted into the second recess 282.

[0320] According to the above configuration, the attenuation component 280 can transmit the rotational force of the output shaft 264 to the intermediate shaft 265 while allowing the relative position of the output shaft 264 and the intermediate shaft 265 to change.

[0321] [Fourth Implementation]

[0322] The fourth embodiment will be described. In the following description, the same reference numerals are used for components that are the same as or equivalent to those in the embodiments described above, and the description of these components is simplified or omitted.

[0323] The fourth embodiment is a variation of the second embodiment. Figure 46 This is an exploded perspective view of the housing 90 according to this embodiment, viewed from the left front. As described in the second embodiment, the power transmission mechanism 162 includes a pulley 165 and a belt 164 mounted on the pulley 165. The pulley 165 is housed in the housing 90. The housing 90 supports the pulley 165.

[0324] like Figure 46As shown, in this embodiment, the power transmission mechanism 162 has an attenuation member 380. The attenuation member 380 has the same structure as the attenuation member 180 described in the second embodiment above.

[0325] like Figure 46 As shown, the housing 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 engages with a threaded hole provided in the base housing 130. In the vibration transmission path, the washer 317, screw 316, and base housing 130 can be considered as a single component. With the housing 90 considered as the first component S1 and the washer 317, screw 316, and base housing 130 considered as the second component S2, the damping component 380 is configured to prevent the first component S1 from contacting the second component S2. The damping component 380 has a first contact surface that contacts the first component S1 and a second contact surface that contacts the second component S2. The first contact surface of the damping component 380 has at least two contact surfaces facing mutually opposite directions. The second contact surface of the damping component 380 has at least two contact surfaces facing mutually opposite directions.

[0326] The connection structure in this embodiment, which connects the housing 90 to the base housing 130 via the attenuation member 380, is substantially the same as the connection structure in the second embodiment described above, which connects the housing 170 to the base housing 130 via the attenuation member 180. In this embodiment, the transmission of vibrations generated by the rotation of the pulley 165 to the base housing 130 is suppressed. Therefore, noise generation is suppressed.

[0327] As explained above, in this embodiment, the attenuation member 380 includes 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 attenuation member 380 includes at least two contact surfaces that contact the first member S1 and face different directions from each other.

[0328] According to the above configuration, since the first contact surface of the damping component 380 includes at least two contact surfaces facing different directions, the contact area between the damping component 380 and the first component P1 increases. Therefore, the damping component 380 can effectively dampen vibration.

[0329] When the first component S1 is the vibration source, the damping component 380 can attenuate the vibration transmitted from the first component S1 to the second component S2. Since the first contact surface of the damping component 380 includes at least two contact surfaces facing different directions, even if the first component S1 vibrates in different directions, the damping component 380 can effectively attenuate the vibration in multiple vibration directions of the first component S1.

[0330] In this embodiment, the second contact surface of the attenuation component 380 includes at least two contact surfaces that are in contact with the second component S2 and face different directions from each other.

[0331] According to the above configuration, when the first component S1 is the vibration source, since the second contact surface of the attenuation component 380 includes at least two contact surfaces facing different directions, the attenuation component 380 can effectively attenuate vibrations in multiple vibration directions even if the vibrations input to the second component S2 are different.

[0332] In this embodiment, the power transmission mechanism 162 includes a pulley 165 and a belt 164 mounted on the pulley 165. The housing 90 supports the pulley 165.

[0333] According to the above configuration, when the housing 90 supporting the pulley 165 of the power transmission mechanism 162 is a vibration source, the damping component 380 can attenuate the vibration transmitted from the housing 90 to the base housing 130. Therefore, noise generation is suppressed.

[0334] [Other Implementation Methods]

[0335] In the above embodiments, the cleaning device 1 is an upright cleaning device. The cleaning device 1 can be a portable cleaning device, a horizontal cleaning device, a shoulder-mounted cleaning device, or a backpack-mounted cleaning device. In addition, the cleaning device 1 can be a cleaner, a washer, an extractor, or a robotic cleaner.

Claims

1. An attenuation component, characterized in that, The damping component is used to attenuate the vibration of the cleaning device having the first component and the second component. The attenuation component includes: a first contact surface that contacts the first component, and a second contact surface that contacts the second component. The first contact surface includes at least two contact surfaces facing different directions from each other.

2. The attenuation component according to claim 1, characterized in that, The second contact surface includes at least two contact surfaces facing different directions from each other.

3. The attenuation component according to claim 1, characterized in that, The attenuation component has a cylindrical portion. The first contact surface includes the outer surface of the cylindrical portion. The second contact surface includes the inner surface of the cylindrical portion.

4. The attenuation component according to claim 3, characterized in that, The second contact surface includes one or both of the upper and lower surfaces of the attenuation component.

5. The attenuation component according to claim 1, characterized in that, The attenuation component includes an opening for at least a portion of the second component.

6. The attenuation component according to claim 1, characterized in that, The attenuation member includes: 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 includes: the outer surface of the cylindrical portion, the first surface of the first flange portion, and the second surface of the second flange portion. The second contact surface includes: the inner surface of the cylindrical portion, the third surface of the first flange portion, and the fourth surface of the second flange portion.

7. The attenuation component according to claim 6, characterized in that, One or both of the first flange portion and the second flange portion have a plurality of grooves spaced apart in the circumferential direction.

8. The attenuation component according to claim 1, characterized in that, The attenuation member includes: a surface, another surface facing the opposite direction to the first surface, a first recess on the first surface, and a second recess on the other surface. The first contact surface includes: the bottom surface of the first recess and the inner surface of the first recess. The second contact surface includes: the bottom surface of the second recess and the inner surface of the second recess.

9. The attenuation component according to claim 1, characterized in that, The attenuation component is disposed around the fixing component that secures the first component and the second component.

10. A cleaning device, characterized in that, The cleaning device comprises: a housing having a suction inlet, a brush disposed at the suction inlet, a drive unit for rotating the brush, a housing supporting at least a portion of the drive unit, and a damping component as described in claim 1. The first component includes the housing. The second component includes the housing.

11. The cleaning device according to claim 10, characterized in that, The drive unit includes a motor and a gear that transmits the rotational force generated by the motor to the brush. The housing supports the gear.

12. The cleaning device according to claim 10, characterized in that, The drive unit has a motor. The housing supports the motor.

13. The cleaning device according to claim 10, characterized in that, The attenuation component has a cylindrical portion. The housing has a retaining portion disposed around the cylindrical portion. The outer casing has a protrusion that inserts into the inside of the cylindrical portion.

14. A cleaning device, characterized in that, The cleaning device comprises: a housing having a suction inlet, a brush disposed at the suction inlet, a drive unit for rotating the brush, and a damping component as described in claim 1. The drive unit includes: a motor, an output shaft connected to the motor, and a transfer shaft connected to the brush. The first component includes the output shaft. The second component includes the transfer shaft.

15. The cleaning device according to claim 14, characterized in that, The attenuation component has: one surface, another surface facing the opposite direction to the first surface, a first recess on the first surface, and a second recess on the other surface. The output shaft has a first cam portion that inserts into the first recess. The transfer shaft has a second cam portion that is inserted into the second recess.

16. A suction head, which is the suction head of a cleaning device, characterized in that, The suction head comprises: a housing having a suction port, a brush disposed at the suction port, a power transmission mechanism for transmitting rotational force generated by a motor to the brush, a housing supporting the power transmission mechanism, and a damping component as described in claim 1. The first component includes the housing. The second component includes the housing.

17. The suction head according to claim 16, characterized in that, The power transmission mechanism includes gears. The housing supports the gear.

18. The suction head according to claim 16, characterized in that, The power transmission mechanism includes: a pulley and a belt mounted on the pulley. The housing supports the pulley.

19. The suction head according to claim 16, characterized in that, The suction head includes screws for fixing the first component and the second component. The damping component is disposed around the screw.

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