Cleaning equipment

Abstract

The utility model provides cleaning equipment. The cleaning equipment comprises a main machine body, a driving assembly, a side brush assembly and an interference assembly. The side brush assembly comprises a base and brush strips, the base can rotate around the axis of the base, and the brush strips are rotatably connected to the peripheral side of the base; the interference assembly is arranged below the base; the driving assembly is used for driving one of the base and the interference assembly to move in the vertical direction, so that the brush strip is switched between a first state and a second state; in the first state, the tail end of the brush strip swings upwards; in the second state, the tail end of the brush strip reaches the low point. According to the cleaning equipment provided by the invention, the brush strip can be controlled to be lifted from the floor or drooped to the floor through the driving assembly, so that whether the side brush assembly cleans the floor or not is controlled, and the problem of secondary pollution caused by accidental touching of stains is reduced.

Description

Technical Field

[0001] The present application relates to the field of cleaning, and in particular to a cleaning device. Background Art

[0002] In the related art, when the cleaning device works on a supporting surface, such as the floor, the rotating side brush contacts the ground and sweeps the garbage on the ground into the working range of the roller brush for collection and cleaning. However, if there are liquid or semi-fluid stains such as soy sauce and juice on the supporting surface, the side brush is likely to contact these stains, causing them to splash around or adhere to the bristles and be carried to other areas, causing secondary pollution. Utility Model Content

[0003] In view of this, an embodiment of the present application hopes to provide a cleaning device that can switch the side brush and the support surface between the contact and separation states, thereby reducing the occurrence of secondary pollution.

[0004] The embodiment of the present application provides a cleaning device, comprising: a main body;

[0005] A drive assembly connected to the main body;

[0006] A side brush assembly is connected to the main body, comprising a base and a brush strip, wherein the base can rotate around its own axis, and a plurality of brush strips are rotatably connected to the peripheral side of the base; and

[0007] An interference component, connected to the main body and disposed below the base;

[0008] Wherein, the driving component is used to drive one of the base and the interference component to move in the up and down direction, so that the brush bar switches between a first state and a second state; in the first state, the interference component contacts the brush bar and causes the end of the brush bar to swing upward; in the second state, the interference component disengages from the brush bar so that the end of the brush bar reaches a low point.

[0009] In some embodiments, the side brush assembly includes a first shaft connected to the base, and the interference assembly includes an interference cover and a second shaft connected to the interference cover;

[0010] Wherein, the first shaft and the second shaft are coaxially arranged, and the first shaft sleeve is arranged on the outer side of the second shaft.

[0011] In some embodiments, the side brush assembly is connected to the drive assembly; when the drive assembly drives the side brush assembly to move downward, the brush bar switches from the second state to the first state; when the drive assembly drives the side brush assembly to move upward, the brush bar switches from the first state to the second state.

[0012] In some embodiments, each of the brush strips includes a brush handle and bristles, wherein the bristles are connected to one end of the brush handle, and the other end of the brush handle is connected to the base. In the first state, the brush handle abuts against an outer edge of the interference cover.

[0013] In some embodiments, the outer edge of the interference cover is circular and is coaxially arranged with the rotation axis of the base.

[0014] In some embodiments, the outer edge diameter of the interference cover is 30-40 mm.

[0015] In some embodiments, the side brush assembly includes a base, a first motor and a transmission mechanism, the transmission mechanism connects the first shaft and the power output shaft of the first motor, the first motor is used to drive the base to rotate, the first motor and the transmission mechanism are both arranged on the base, and the base can move in the up and down directions under the action of the driving assembly.

[0016] In some embodiments, the transmission mechanism includes a gear set, the gear set includes a first gear and a second gear that mesh with each other, the first gear is connected to the power output shaft of the first motor, the second gear is connected to the first shaft, the axial direction of the power output shaft of the first motor intersects with the up and down directions, and the rotation axis of the first gear intersects with the rotation axis of the second gear.

[0017] In some embodiments, the driving assembly includes a second motor, a lead screw and a nut, the nut is connected to the side brush assembly, the lead screw is arranged on the main body along the up and down directions, the second motor is used to drive the lead screw to rotate, and the nut is sleeved on the lead screw to convert the rotation of the lead screw into the up and down linear motion of the side brush assembly.

[0018] In some embodiments, the driving assembly includes a second motor, a transmission gear and a rack, the transmission gear is connected to the second motor, the rack is arranged on the side brush assembly along the up and down directions, the second motor is used to drive the transmission gear to rotate, and the rack is meshed with the transmission gear to convert the rotation of the transmission gear into the up and down linear motion of the rack.

[0019] The cleaning device provided in the embodiment of the present application can control the brush bar to be lifted from the floor or drooped to the floor through the driving component, thereby controlling whether the side brush component cleans the floor, reducing the chance of accidentally touching liquid or semi-fluid stains, and reducing the problem of stains being brought to other areas and causing secondary contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a cleaning device in one embodiment of the present application;

[0021] Figure 2 for Figure 1 A schematic structural diagram of the structure in the first state;

[0022] Figure 3 for Figure 2 A schematic structural diagram of the structure in the second state;

[0023] Figure 4 This is a partial structural schematic diagram of a cleaning device in another embodiment of the present application in a first state;

[0024] Figure 5 for Figure 4 Schematic diagram of the partial structure of the structure in the second state.

[0025] Description of Reference Numerals

[0026] 10. Main body; 20. Drive assembly; 21. Second motor; 22. Screw; 23. Nut; 30. Side brush assembly; 31. Base; 32. Brush strip; 321. Brush handle; 322. Bristles; 33. First shaft; 34. Machine base; 35. First motor; 36. Transmission mechanism; 361. First gear; 362. Second gear; 40. Interference assembly; 41. Interference cover; 42. Second shaft; 401. Drive wheel; 501. Roller brush; 601. Fixing rod. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0028] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0030] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0032] The present application embodiment provides a cleaning device, see Figure 1 and Figure 4 The cleaning device includes a main body 10, a driving assembly 20, a side brush assembly 30 and an interference assembly 40, and the driving assembly 20 is connected to the main body 10. The cleaning device provided in the embodiment of the present application can be used to clean a supporting surface such as the ground, and its form is not limited, and it can be a sweeping robot, a vacuum cleaner, etc. This specification takes the sweeping robot as an example for description.

[0033] The main body 10 is the main structure of the cleaning device, and is used to support the main components of the cleaning device. Figure 1 The main body 10 is provided with a driving wheel 401 and a roller brush 501, and the axes of at least two driving wheels 401 are collinear, which can drive the cleaning device to move along a direction perpendicular to the axes of the driving wheels 401 on a supporting surface such as a floor. When the cleaning device moves, the roller brush 501 continues to roll to sweep and collect dirt on the moving path of the cleaning device.

[0034] The side brush assembly 30 is connected to the main body 10, specifically, is located at the bottom side of the main body 10, and includes a base 31 and a brush bar 32. The base 31 can rotate around its own axis, and a plurality of brush bars 32 are connected to the peripheral side of the base 31. It should be noted that when the base 31 rotates, the brush bar 32 rotates accordingly. In some embodiments, the brush bar 32 can also swing up and down slightly with the peripheral side of the base 31 as a fulcrum.

[0035] The number of brush strips 32 of a single side brush assembly 30 is not limited, and can be two, three, four, five or more. Exemplarily, three brush strips 32 are evenly spaced and distributed around the circumference of the base 31 .

[0036] The interference assembly 40 is connected to the main body 10 and is disposed below the base 31. It should be noted that when the relative positional relationship between the interference assembly 40 and the base 31 changes, the positional relationship between the interference assembly 40 and the brush bar 32 changes accordingly. When structural interference occurs between the interference assembly 40 and the brush bar 32, the position of the end of the brush bar 32 changes in the height direction. The end refers to the end of the brush bar 32 away from the base 31.

[0037] The driving assembly 20 is used to drive one of the base 31 and the interference assembly 40 to move in the up-down direction, so that the brush strip 32 switches between the first state and the second state. In other words, the driving assembly 20 can be used to drive the base 31 to move in the up-down direction, or to drive the interference assembly 40 to move in the up-down direction, and both of the above situations change the relative position relationship between the base 31 and the interference assembly 40 in the up-down direction.

[0038] It should be noted that when the driving component 20 is used to drive the base 31 to move in the up and down directions, its connection relationship with the base 31 is not limited. It can be directly connected to the base 31, or it can be connected to other structures connected to the base 31, such as the side brush component 30 as a whole, to indirectly connect to the base 31 to move the base 31.

[0039] See also Figure 2 and Figure 4 In the first state, the interference assembly 40 contacts the brush strip 32 and causes the end of the brush strip 32 to swing upward. That is, an interaction force is generated between the interference assembly 40 and the brush strip 32, and the end of the brush strip 32 is lifted and separated from the support surface, which can reduce the probability of contacting liquid or semi-fluid stains on the support surface.

[0040] See also Figure 3 and Figure 5 In the second state, the interference component 40 is separated from the brush bar 32 so that the end of the brush bar 32 reaches the lowest point. It should be noted that when the cleaning device is cleaning, the end of the brush bar 32 reaches the lowest point, that is, the end of the brush bar 32 contacts the support surface, that is, the interference component 40 and the brush bar 32 stop interacting with each other, and the end of the brush bar 32 can vertically contact the support surface under the influence of its own weight or centrifugal force, at which time, the brush bar 32 can play a role in cleaning the dirt on the support surface. Of course, when the cleaning device is in other working conditions such as shutdown and reset, the end of the brush bar 32 reaching the lowest point can be the natural hanging position of the brush bar 32 under its own weight.

[0041] Therefore, the cleaning device provided in the embodiment of the present application can control the end of the brush strip 32 to lift from the floor or hang down to the floor through the driving component 20, thereby controlling whether the side brush component 30 cleans the floor, reducing the chance of accidentally touching liquid or semi-fluid stains, and reducing the problem of stains being brought to other areas and causing secondary pollution.

[0042] Exemplarily, when the distance between the base 31 and the interference assembly 40 in the first state is smaller than the distance in the second state. Specifically, when the brush bar 32 is in the second state, if the driving assembly 20 drives the base 31 or the interference assembly 40 to move so that the two move toward each other, the second state can be switched to the first state. When the brush bar 32 is in the first state, if the driving assembly 20 drives the base 31 or the interference assembly 40 to move so that the two move toward each other, the first state can be switched to the second state.

[0043] Exemplarily, the cleaning device also includes a control module (not shown) arranged in the main body 10, the control module includes a sensing unit and a decision unit, the sensing unit is used to collect surface information of the floor and send the collected information to the decision unit, the decision unit determines whether there is a stain on the floor that needs to be avoided based on the received information, if so, the drive component 20 is controlled to switch the brush bar 32 to the first state, the side brush component 30 is free from contact with the stain, and other cleaning components, such as a mop, can be controlled to effectively clean the stain, if it has moved away from the stain or the stain has been cleaned, the drive component 20 is controlled to switch the brush bar 32 to the second state to sweep and collect other dirt.

[0044] For some examples, see Figure 4 and Figure 5 The side brush assembly 30 is connected to the driving assembly 20, and the height of the interference assembly 40 from the ground remains unchanged and cannot be adjusted.

[0045] When the driving assembly 20 drives the side brush assembly 30 to move downward, the brush strip 32 switches from the second state to the first state; when the driving assembly 20 drives the side brush assembly 30 to move upward, the brush strip 32 switches from the first state to the second state.

[0046] In other words, the side brush assembly 30 has a stroke in the up-down direction, and as the displacement of the side brush assembly 30 changes, the brush strip 32 contacts or disengages from the interference assembly 40. Further, when the brush strip 32 switches from the second state to the first state, the side brush assembly 30 continues to move, and the brush strip 32 continues to rotate with the peripheral side of the base 31 as a fulcrum, and the distance between the end of the brush strip 32 and the ground also increases until it reaches the first preset angle position, at which time the distance between the end of the brush strip 32 and the support surface is greater than the preset value.

[0047] Therefore, in this embodiment, a portion of the up and down stroke of the side brush assembly 30 can be converted into the rotation stroke of the brush bar 32, which is beneficial for the driving assembly 20 to control the distance of the side brush assembly 30 from the ground.

[0048] It should be noted that, in the first state, the distance between the end of the brush strip 32 and the ground is not limited. Figure 2 , the brush strip 32 is parallel to the ground and is far from the ground; for another example, please refer to Figure 4 The brush bar 32 is inclined relative to the ground and is closer to the ground.

[0049] For some examples, see Figure 4 and Figure 5 The side brush assembly 30 includes a first shaft 33, which is connected to the base 31, that is, the first shaft 33 drives the base 31 and the brush bar 32 to rotate. The interference assembly 40 includes an interference cover 41 and a second shaft 42, which is connected to the interference cover 41, that is, the second shaft 42 provides installation support for the interference cover 41.

[0050] The first shaft 33 and the second shaft 42 are coaxially arranged, and the first shaft 33 is sleeved on the outer side of the second shaft 42 .

[0051] It should be noted that, although the first shaft 33 and the second shaft 42 are coaxially arranged, when the rotation of the first shaft 33 drives the base 31 to rotate, the second shaft 42 may rotate or may not rotate, and there is no limitation on this.

[0052] In this way, when the cleaning device cleans the support surface through the side brush assembly 30 and the base 31 drives the brush bar 32 to rotate around the axis of the base 31 itself, the interference cover 41 is unlikely to produce structural interference to the rotation process, thereby reducing interference with the cleaning process.

[0053] Obviously, the first shaft 33 and the second shaft 42 can be relatively displaced along the axial direction to change the relative position relationship between the base 31 and the interference cover 41. In one embodiment, the interference cover 41 is connected to the main body 10 through the second shaft 42 and keeps a constant height position, and the base 31 changes its relative position relationship with the interference cover 41 following the axial displacement of the first shaft 33.

[0054] For some examples, see Figure 4 and Figure 5 Each brush strip 32 includes a brush handle 321 and bristles 322 , the bristles 322 are connected to one end of the brush handle 321 , and the other end of the brush handle 321 is connected to the base 31 . In the first state, the brush handle 321 abuts against the outer edge of the interference cover 41 .

[0055] The brush handle 321 is harder than the bristles 322 .

[0056] The bristles 322 are connected to one end of the brush handle 321 in a clustered manner, and one end of the brush handle 321 away from the bristles 322 is connected to the base 31. When the brush strip 32 contacts the support surface, the bristles 322 rub against the support surface to clean dirt such as dust and paper scraps.

[0057] The brush handle 321 abuts against the outer edge of the interference cover 41, that is, the brush handle 321 is one of the force points when the brush strip 32 is lifted in the first state, which can prevent the bristles 322 from contacting the outer edge of the interference cover 41, so as to reduce the probability of the bristles 322 falling off due to friction between the bristles 322 and the interference cover 41, thereby extending the service life of the brush strip 32.

[0058] The material of the bristles 322 is not limited, and can be polyester resin with good wear resistance, or moisture-resistant polypropylene (PP) plastic; the material of the brush handle 321 is not limited, preferably, a wear-resistant plastic such as polyoxymethylene (POM) is used.

[0059] The structure of the interference cover 41 is not limited, and can be hemispherical or disc-shaped.

[0060] For some examples, see Figure 1 The outer edge of the interference cover 41 is circular and is coaxially arranged with the rotation axis of the base 31.

[0061] That is, the outer edge of the interference cover 41 is radially symmetrical with the rotation axis of the base 31 as the center. In this way, there is no restriction on the angle at which all the brush strips 32 on the base 31 contact the outer edge of the interference cover 41. The brush strips 32 in the first state can all contact the outer edge of the base 31, and when the outer edge of the interference cover 41 contacts the brush handle 321, the lifting angles of each brush strip 32 are roughly the same.

[0062] The size of the interference cover 41 is not limited. Preferably, the outer edge diameter of the interference cover 41 is 30-40 mm (millimeter), such as 30 mm, 33 mm, 37 mm, 40 mm, etc.

[0063] In this embodiment, in the first state, a small change in the relative distance between the interference cover 41 and the base 31 can allow the bristles 322 to have a suitable height above the ground, thereby improving the efficiency of converting the relative displacement between the interference cover 41 and the base 31 into the rotational motion of the brush strip 32; in addition, when the brush strip 32 is switched to the second state, it can maintain contact with the ground.

[0064] For some examples, see Figure 4 and Figure 5The side brush assembly 30 includes a base 34, a first motor 35 and a transmission mechanism 36. The transmission mechanism 36 connects the first shaft 33 and the power output shaft of the first motor 35. The first motor 35 is used to drive the base 31 to rotate. The first motor 35 and the transmission mechanism 36 are both arranged on the base 34. The base 34 can move in the up and down directions under the action of the driving assembly 20.

[0065] It can be understood that the power of the first motor 35 is transmitted to the base 31 through the transmission mechanism 36 and the first shaft 33 in sequence, and drives the base 31 to rotate. When the base 34 moves in the up and down direction, the first motor 35, the transmission mechanism 36, the first shaft 33 and the base 31 all move accordingly. In this way, by driving the base 34 to move, the relative position between the base 31 and the interference assembly 40 changes, and the first motor 35 and the transmission mechanism 36 follow the movement, and the rotation of the base 31 around its own axis is less affected.

[0066] The specific form of the transmission mechanism 36 is not limited. For example, it can be a belt transmission mechanism, or a worm gear.

[0067] For some examples, see Figure 4 and Figure 5 The transmission mechanism 36 includes a gear set, which includes a first gear 361 and a second gear 362 that mesh with each other. The first gear 361 is connected to the power output shaft of the first motor 35, and the second gear 362 is connected to the first shaft 33. The axial direction of the power output shaft of the first motor 35 intersects with the up and down directions, and the rotation axis of the first gear 361 intersects with the rotation axis of the second gear 362.

[0068] The above-mentioned intersection means that the angle between the two is not zero, including that the axial direction of the power output shaft of the first motor 35 is perpendicular to the up and down direction, so that the height dimension of the cleaning equipment can be reduced; and also includes that the rotation axis of the first gear 361 is perpendicular to the rotation axis of the second gear 362.

[0069] The interference assembly 40 is connected to the main body 10, and the rotation axis of the first gear 361 intersects with the rotation axis of the second gear 362, so that the axis of the first shaft 33 is staggered with the axis of the first gear 361, and the axis of the second shaft 42 embedded in the first shaft 33 is also staggered with the axis of the first gear 361 and passes through the second gear 362, providing an avoidance space for the interference assembly 40 to be connected to the main body 10. Specifically, the main body 10 has a fixing rod 601, and the interference cover 41 is connected to the fixing rod 601 through the second shaft 42 to be fixed to the main body 10.

[0070] The specific form of the driving assembly 20 is not limited.

[0071] For some examples, see Figure 4 and Figure 5The driving assembly 20 includes a second motor 21, a screw 22 and a nut 23. The nut 23 is connected to the side brush assembly 30. The screw 22 is arranged on the main body 10 along the up and down direction. The second motor 21 is used to drive the screw 22 to rotate. The nut 23 is sleeved on the screw 22 to convert the rotation of the screw 22 into the up and down linear motion of the side brush assembly 30.

[0072] The screw-nut transmission has the characteristic of one-way transmission, and power can only be transmitted from the screw 22 to the nut 23. When the position of the nut 23 relative to the screw 22 is fixed, the position of the side brush assembly 30 in the up and down directions is fixed accordingly, that is, the second motor 21 can change the position of the side brush assembly 30 by controlling the power output.

[0073] Exemplarily, the nut 23 is fixedly connected to the base 34 .

[0074] In some embodiments, the drive assembly 20 includes a second motor, a transmission gear and a rack. The transmission gear is connected to the second motor, and the rack is arranged on the side brush assembly 30 along the up and down directions. The second motor is used to drive the transmission gear to rotate, and the rack is meshed with the transmission gear to convert the rotation of the transmission gear into the up and down linear motion of the rack.

[0075] The gear rack transmission structure is simple and the transmission ratio is precise. The rotation of the transmission gear is controlled by the power output of the second motor to change the position of the side brush assembly 30 .

[0076] Exemplarily, the rack is fixedly connected to the base 34 .

[0077] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0078] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cleaning device, characterized in that: include: Main body; A drive assembly connected to the main body; A side brush assembly is connected to the main body, comprising a base and a brush strip, wherein the base can rotate around its own axis, and a plurality of brush strips are connected to the peripheral side of the base; as well as An interference component, connected to the main body and disposed below the base; Wherein, the driving component is used to drive one of the base and the interference component to move in the up and down direction, so that the brush bar switches between a first state and a second state; in the first state, the interference component contacts the brush bar and causes the end of the brush bar to swing upward; in the second state, the interference component disengages from the brush bar so that the end of the brush bar reaches a low point.

2. The cleaning device according to claim 1, characterized in that The side brush assembly includes a first shaft connected to the base, and the interference assembly includes an interference cover and a second shaft connected to the interference cover; Wherein, the first shaft and the second shaft are coaxially arranged, and the first shaft sleeve is arranged on the outer side of the second shaft.

3. The cleaning device according to claim 1, characterized in that: The side brush assembly is connected to the driving assembly; when the driving assembly drives the side brush assembly to move downward, the brush bar switches from the second state to the first state; when the driving assembly drives the side brush assembly to move upward, the brush bar switches from the first state to the second state.

4. The cleaning device according to claim 2, characterized in that: Each of the brush strips includes a brush handle and bristles, wherein the bristles are connected to one end of the brush handle, and the other end of the brush handle is connected to the base. In the first state, the brush handle abuts against the outer edge of the interference cover.

5. The cleaning device according to claim 2, characterized in that: The outer edge of the interference cover is circular and is coaxially arranged with the rotation axis of the base.

6. The cleaning device according to claim 2, characterized in that: The outer diameter of the interference cover is 30-40 mm.

7. The cleaning device according to claim 2, characterized in that: The side brush assembly includes a base, a first motor and a transmission mechanism, the transmission mechanism connects the first shaft and the power output shaft of the first motor, the first motor is used to drive the base to rotate, the first motor and the transmission mechanism are both arranged on the base, and the base can move in the up and down directions under the action of the driving assembly.

8. The cleaning device according to claim 7, characterized in that The transmission mechanism includes a gear set, which includes a first gear and a second gear that mesh with each other, the first gear is connected to the power output shaft of the first motor, the second gear is connected to the first shaft, the axial direction of the power output shaft of the first motor intersects with the up and down directions, and the rotation axis of the first gear intersects with the rotation axis of the second gear.

9. The cleaning device according to any one of claims 1 to 8, characterized in that: The driving assembly includes a second motor, a lead screw and a nut, the nut is connected to the side brush assembly, the lead screw is arranged on the main body along the up and down directions, the second motor is used to drive the lead screw to rotate, and the nut is sleeved on the lead screw to convert the rotation of the lead screw into the up and down linear motion of the side brush assembly.

10. The cleaning device according to any one of claims 1 to 8, characterized in that: The driving assembly includes a second motor, a transmission gear and a rack. The transmission gear is connected to the second motor. The rack is arranged on the side brush assembly along the up and down directions. The second motor is used to drive the transmission gear to rotate. The rack is meshed with the transmission gear to convert the rotation of the transmission gear into up and down linear motion of the rack.

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