Cleaning Equipment

Abstract

The present disclosure relates to a cleaning device, including a floor brush assembly, which includes: a floor brush housing, a first cleaning unit, and a second cleaning unit. The first cleaning unit has a first cleaning member, which is rotatably connected to the floor brush housing along a first rotation axis so that the first cleaning member cleans the working surface; the second cleaning unit has a second cleaning member, which is located on at least one side of the first cleaning unit in a direction parallel to the first rotation axis; in a cleaning state, the second cleaning unit contacts the first cleaning unit so that the first cleaning unit drives the second cleaning unit to rotate; the cleaning state is a working state in which the first cleaning unit rotates to clean the working surface. The present disclosure increases the cleaning coverage by providing the second cleaning unit; the first cleaning unit drives the second cleaning unit to rotate, so there is no need to additionally provide a second cleaning unit driving mechanism, and the cleaning efficiency of the first cleaning unit will not be affected.

Description

Technical Field

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

[0002] With the development of social productivity, people's living standards have also been improved. On the premise that the material basis is guaranteed, people begin to use a variety of tools to reduce labor and improve the quality of life, and household cleaning equipment comes into being.

[0003] Cleaning equipment usually includes a body and a cleaning unit. The cleaning unit cannot be extended to the outside of the body due to design requirements. This means that when the cleaning equipment is working close to the edge, the side of the cleaning unit cannot achieve zero edge contact, resulting in a dead corner for cleaning. This results in stains remaining on the floor near walls and furniture, resulting in a poor user experience.

[0004] In order to solve the problem of sticking to the edge in the prior art, a side brush is usually set on the side of the roller brush. The side brush is usually rotated by a separate driving mechanism or transmission mechanism. However, setting up the driving mechanism or transmission mechanism requires a large space, which means that the length of the roller brush needs to be reduced to accommodate the side brush and its driving or transmission mechanism. However, in the cleaning equipment, the cleaning liquid soaks the roller brush, and the roller brush rotates to clean the ground. The wet roller brush with a large cleaning area is the most important cleaning unit of the cleaning equipment. Compared with the side brush, the roller brush is the most important factor in the cleaning efficiency of the cleaning equipment. The reduction in the length of the roller brush in order to install and drive the side brush will inevitably greatly reduce the cleaning efficiency of the cleaning equipment. How to provide a cleaning equipment that does not affect the cleaning efficiency of the cleaning equipment and can solve the problem of cleaning against the edge is a technical problem that needs to be solved in the present disclosure. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present disclosure provides a cleaning device.

[0006] According to a first aspect of the present disclosure, there is provided a cleaning device, including a floor brush assembly, the floor brush assembly comprising:

[0007] Floor brush housing;

[0008] A first cleaning unit having a first cleaning member; the first cleaning unit is configured to be rotatably connected to the floor brush housing along a first rotation axis so that the first cleaning member cleans the working surface;

[0009] The second cleaning unit has a second cleaning member; in a direction parallel to the first rotation axis, the second cleaning unit is located on at least one side of the first cleaning unit; in a cleaning state, the second cleaning unit is constructed to contact the first cleaning unit so that the first cleaning unit drives the second cleaning unit to rotate; the cleaning state is a working state in which the first cleaning unit rotates to clean the working surface.

[0010] One beneficial effect of the present disclosure is that by arranging a second cleaning unit on at least one side of the first cleaning unit, and extending the cleaning surface of the second cleaning unit toward the outside of the floor brush housing, it is possible to increase the cleaning coverage. When cleaning along the edge, although the side of the first cleaning unit cannot achieve zero edge contact, the second cleaning unit can extend into the cleaning dead corner to fill the gap between the first cleaning unit and the wall edge or the furniture edge, thereby achieving comprehensive cleaning. In addition, the first cleaning unit can drive the second cleaning unit to rotate, so there is no need to additionally set up a drive mechanism or transmission mechanism for the second cleaning unit, thereby saving space for the cleaning equipment. The first cleaning unit is the most important cleaning unit of the cleaning equipment. When the second cleaning unit is additionally set up, the first cleaning unit can still maintain its original length, thereby not affecting the cleaning efficiency of the cleaning equipment. It can be seen that the present disclosure provides a cleaning equipment that does not affect the cleaning efficiency of the cleaning equipment and can also achieve edge cleaning at the same time.

[0011] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0013] Figure 1 is a schematic diagram of the structure of the cleaning device disclosed herein;

[0014] Figure 2 is a schematic structural diagram of a brush assembly disclosed herein;

[0015] Figure 3 is a schematic structural diagram of the brush assembly disclosed in the present invention from another angle;

[0016] Figure 4 is a cross-sectional view of a brush assembly of the present disclosure;

[0017] Figure 5 is a partial bottom view of the side brush position of the brush assembly of the present disclosure;

[0018] Figure 6 It is a schematic diagram of the structure of the first support arm, the driving device and the side brush of the present invention;

[0019] Figure 7 is a schematic diagram of the structure of the disclosed side brush;

[0020] Figure 8 is an axial cross-sectional view of the disclosed side brush;

[0021] Fig. 9 is a transverse cross-sectional view of the clamp position of the side brush of the present disclosure;

[0022] Fig.10 is a structural schematic diagram of a floor brush assembly according to a second embodiment of the present disclosure;

[0023] Fig.11 is a schematic diagram of the structure of the side brush of the second embodiment of the present disclosure;

[0024] Fig.12 It is a partial bottom view of the side brush position of the floor brush assembly of the second embodiment of the present disclosure;

[0025] Fig.13 is a cross-sectional view of a floor brush assembly according to a second embodiment of the present disclosure;

[0026] Fig.14 is a schematic structural diagram of the first support arm, the driving device and the side brush of the second embodiment of the present disclosure;

[0027] Fig.15 is a schematic diagram of the structure of the side brush and the clamp of the second embodiment of the present disclosure;

[0028] Fig.16 is a cross-sectional view of a side brush according to a second embodiment of the present disclosure;

[0029] Fig.17 This is a schematic diagram of the shape of the brush piece of the second embodiment of the present disclosure;

[0030] Fig.18 This is an enlarged view of the local structure of the side brush position of the floor brush assembly of the second embodiment of the present disclosure;

[0031] Fig.19 This is a partial enlarged view of the side brush position of the floor brush assembly of the second embodiment of the present disclosure from another angle;

[0032] Fig. 20 It is a partial bottom view of the side brush position of the floor brush assembly of the second embodiment of the present disclosure.

[0033] Figures 1 to 20 The one-to-one correspondence between the component names and the reference numerals is as follows:

[0034] 100, body; 101, handheld part; 200, floor brush assembly; 201, walking mechanism;

[0035] 1. Floor brush housing; 11. Driving side; 12. Disassembly side; 2. Roller brush; 21. Roller brush bristles; 22. Side wall; 3. Side brush; 30. Rotating shaft; 301. Snap-in groove; 31. Brush bristles; 32. Mounting seat; 321. Inner cavity; 322. Groove; 323. First part; 324. Second part; 33. Flange; 34. Clamp; 341. Snap-in piece; 36. Brush piece; 361. First end; 362. Second end; S1. Lower end face; S2. Inner side face; 37. Friction part; 4. Driving device; 41. Motor; 42. Driving shaft; 43. Transmission part; 5. First arm; 6. Second arm; 7. Rubber strip. DETAILED DESCRIPTION

[0036] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

[0037] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0039] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0040] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0041] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the premise of each other's existence.

[0042] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0043] Embodiment 1

[0044] This embodiment provides a cleaning device, which can be a handheld cleaning device, such as a handheld cleaning machine, a handheld vacuum cleaner, a handheld floor scrubber, a handheld fabric cleaning machine, and other handheld cleaning devices known to those skilled in the art. It can also be a sweeping robot, a mopping robot, a sweeping and mopping robot, and other self-propelled cleaning devices used to clean work surfaces that need to be cleaned, such as floors, sofas, and carpets.

[0045] refer to Figure 1 The cleaning device in this embodiment is a handheld floor scrubber, which includes a body 100, a handheld portion 101, and a floor brush assembly 200 connected to the bottom of the body. Specifically, when the user uses the handheld cleaning device for cleaning, the user can push the handheld portion 101 to move and use the floor brush assembly 200 to clean the work surface.

[0046] The floor brush assembly 200 is rotatably connected to the body 100, so that the body 100 can switch between an upright state and an inclined state. When the body 100 is in the inclined state, the cleaning device can clean the work surface, and the floor brush assembly 200 can maintain contact with the work surface, thereby achieving the purpose of cleaning the dirt on the work surface.

[0047] Functional components such as a water supply system and a sewage suction system may be provided in the cleaning device. Specifically, the water supply system may include structures such as a clean water tank, a water pump, and a fluid distributor; the sewage suction system may include structures such as a sewage tank, a recovery channel, a sewage suction port, and a suction motor. The cleaning medium in the clean water tank is sprayed onto the working surface through the fluid distributor under the action of the water pump, or sprayed onto the cleaning unit in the floor brush assembly 200. The cleaning unit rotates on the working surface and picks up dirt. The dirt picked up by the cleaning unit is separated from the cleaning unit under the centrifugal force of the cleaning unit rotation; or the dirt picked up by the cleaning unit is scraped off the cleaning unit by the scraping strip at the sewage suction port and separated from the cleaning unit. Under the suction of the suction motor, the dirt separated from the cleaning unit enters the recovery channel through the sewage suction port and is recovered into the sewage tank. The scraping strip may be located above the sewage suction port, and the scraping strip extends in a direction parallel to the axial direction of the roller brush, and its extension length is substantially the same as the length of the cleaning unit.

[0048] The cleaning device may also include a walking mechanism 201 for the cleaning device to walk and perform cleaning work. The walking mechanism 201 may be a running wheel provided on the floor brush assembly 200, and the cleaning device may walk on the working surface by the user applying a force to push forward or backward; or when the cleaning device of the present disclosure is a cleaning robot, the cleaning device may walk on the working surface under the action of its own driving force. This document does not specifically limit other structures except the floor brush assembly 200, and those skilled in the art may select them based on the existing technology.

[0049] refer to Figure 2 and Figure 3 The floor brush assembly 200 includes: a floor brush housing 1, a first cleaning unit, and a second cleaning unit. The first cleaning unit has a first cleaning member, and the first cleaning unit is rotatably connected to the floor brush housing 1 along a first rotation axis, so that the first cleaning member cleans the work surface. In one embodiment of the present disclosure, the first cleaning unit is a roller brush 2, and the rotation axis of the roller brush 2 is the first rotation axis. The first rotation axis is constructed to be parallel to the work surface, so that the roller brush can wet-mop the work surface with water during the rotation process. Figure 2 As shown, the roller brush 2 is a cylindrical structure, and its two ends are rotatably connected to the floor brush housing 1. Cleaning cotton, roller brush bristles 21 or other first cleaning members for cleaning may be provided on the outer surface of the roller brush 2. In the following, the first cleaning unit is the roller brush 2 and the first cleaning member is the roller brush bristles 21 as an example for specific description. In the case of different types of cleaning equipment, the first cleaning unit may also be other structures such as a rag disk and a sweeping disk, which is not limited in the present disclosure.

[0050] refer to Figure 4 One end of the roller brush 2 is rotatably connected to the floor brush housing 1, so that the floor brush housing 1 can provide support for one end of the roller brush 2. One end of the driving device 4 is connected to the floor brush housing 1, and the other end extends into the cavity of the roller brush 2 and is transmission-connected to the roller brush 2. As a result, the driving device 4 can provide support for the roller brush 2, and through the rotation of the output end of the driving device 4, the roller brush 2 can be driven to rotate relative to the floor brush housing 1 to complete the cleaning of the working surface.

[0051] Specifically, Figure 2 As shown, the two sides of the floor brush housing 1 in the axial direction of the roller brush 2 are defined as a driving side 11 and a disassembly side 12 respectively. Figures 2 to 4 A first arm 5 located at the driving side 11 and a second arm 6 located at the disassembly side 12 are arranged on opposite sides of the floor brush housing 1. One end of the first arm 5 and the second arm 6 are respectively connected to the floor brush housing 1, and the other end extends outward, so that an approximately U-shaped accommodation space is enclosed between the first arm 5, the second arm 6 and the floor brush housing 1, and the roller brush 2 and other components can be arranged in the accommodation space.

[0052] refer to Figure 2 and Figure 4, a driving device 4 for driving the first cleaning unit to rotate is installed on the first arm 5. One end of the driving device 4 is fixedly connected to the first arm 5, and the other end is inserted into the cavity of the roller brush 2, and the output end of the driving device 4 is connected to the roller brush 2 in a transmission manner, so that the driving device 4 can drive the roller brush 2 to rotate. Specifically, the driving device 4 includes: a motor 41, a driving shaft 42 and a transmission part 43, and the motor 41 can drive the driving shaft 42 and the transmission part 43 to rotate synchronously. The transmission part 43 can be provided with a concave-convex structure so that it can cooperate with the inner wall of the roller brush 2, so that the roller brush 2 is driven by the motor 41 to rotate. Since the driving device 4 is arranged on the first arm 5, when the cleaning device needs to be maintained, for example: when the roller brush 2 is worn and needs to be replaced, the second arm 6 can be removed to pull out the roller brush 2.

[0053] refer to Figure 3 and Figure 4 , the first cleaning unit is constructed to be detachably connected to the floor brush housing 1 through the second arm 6. The second arm 6 located on the disassembly side 12 is fixed to the floor brush housing 1 in a detachable manner, and one end of the roller brush 2 can be rotatably connected to the second arm 6 through a bearing or a method well known to those skilled in the art. For example, a bearing seat can be provided at a corresponding position of the second arm 6, the inner ring of the bearing can be fixed on the bearing seat, and the outer ring can be fixed on the inner wall of the roller brush 2, or fixed on a mounting bracket provided on the inner wall of the roller brush 2, thereby achieving support and relative rotation between the roller brush 2 and the second arm 6. The second arm 6 is detached from the floor brush housing 1, and the second arm 6 and the roller brush 2 are simultaneously removed from the floor brush housing 1, thereby achieving the removal of the roller brush 2. Alternatively, the roller brush 2 and the second arm 6 are rotatably connected together in a detachable manner. On the basis of ensuring the rotational coordination between the roller brush 2 and the second arm 6, after the second arm 6 and the roller brush 2 are removed from the floor brush housing 1, the roller brush 2 can also be removed from the second arm 6, so that the user can replace or maintain the roller brush 2 when it is worn or damaged during cleaning.

[0054] The first arm 5 and the second arm 6 usually have a certain thickness to support the driving device 4 and the roller brush 2. Among them, the first arm 5 located on the driving side 11 is usually thicker, because the driving device 4 arranged on the first arm 5 will occupy a certain thickness, and because the driving device 4 is suspended and mounted on the first arm 5, the thickness of the first arm 5 itself needs to be sufficient to support the weight of the driving device 4. Since the roller brush 2 is located between the first arm 5 and the second arm 6, the thickness of the first arm 5 and the second arm 6 makes it impossible for the roller brush 2 to be flush with the left and right sides of the floor brush housing 1. It can be understood that in the axial direction of the roller brush 2, the length of the roller brush 2 is less than the length of the floor brush housing 1. Therefore, in the actual cleaning scene, zero edge cannot be achieved. The two sides of the roller brush 2 will inevitably be a certain distance away from the side edges such as the wall and the furniture edge, resulting in a cleaning dead angle. Specifically, the roller brush 2 on the driving side 11 has a gap of about 10 mm from the side.

[0055] In order to solve the problem that the two sides of the roller brush 2 and the floor brush housing 1 are not flush, zero-edge cleaning cannot be achieved, and the cleaning effect is poor, a second cleaning unit is also provided on the floor brush assembly 200 of the present disclosure, and the second cleaning unit has a second cleaning member. Specifically, along the direction parallel to the first rotation axis, that is, the rotation axis of the roller brush 2 (parallel includes overlap), the second cleaning unit is located on at least one side of the first cleaning unit, and the cleaning surface of the second cleaning unit is constructed to extend from the cleaning surface of the first cleaning unit to the outside of the floor brush housing 1, thereby the working surface located from the side of the roller brush 2 to the outside of the floor brush housing 1 can be cleaned by the second cleaning unit, thereby expanding the cleaning area and compensating for the cleaning blind area problem caused by the installation requirements of the traditional roller brush 2, so that when the cleaning device of the present disclosure performs cleaning operations along the wall or along other obstacles, the distance from the cleaning unit to the wall and obstacles can be reduced, and the blind area that the roller brush 2 cannot clean can be cleaned by the second cleaning unit, thereby reducing the omission of dirt in the blind area and improving the user experience.

[0056] The second cleaning unit is configured to rotate relative to the working surface with the second rotation axis as the axis, and the second rotation axis is configured to deviate from the first rotation axis. Specifically, the angle between the second rotation axis and the first rotation axis is configured to be greater than 0° and less than or equal to 90°, so that the first cleaning unit and the second cleaning unit can rotate in different directions. This allows the first cleaning unit and the second cleaning unit to be rotatably connected to the floor brush housing 1 in different connection methods, and to compensate for the cleaning blind area problem caused by the installation problem.

[0057] The second cleaning unit is constructed to drive the dirt on the working surface toward the first cleaning unit during the rotation process, so that the dirt can be centrally cleaned by the first cleaning unit. This is because in a specific embodiment of the present disclosure, the roller brush 2 is the main cleaning unit of the cleaning device, and a component for collecting dirt is provided on the floor brush assembly 200, such as a dirt suction port, a dust suction port, and other recovery devices for centrally processing the dirt cleaned by the roller brush 2. On this basis, the second cleaning unit of the present disclosure is an auxiliary cleaning unit of the cleaning device, which drives the dirt on the corresponding working surface to the direction of the roller brush 2 during the rotation process, so that the roller brush 2 can be used for centralized cleaning.

[0058] In one embodiment of the present disclosure, the second cleaning unit can drive dirt to the front side of the roller brush 2. In this case, the roller brush 2 can further clean this part of the dirt. The user only needs to continue to push the cleaning device forward, and the roller brush 2 can naturally clean the dirt on its path. The second cleaning unit can also drive dirt to the rear side of the roller brush 2. In this case, the dirt can be sucked away by the dirt suction port set at the rear side of the roller brush 2, or the user can repeatedly drag the cleaning device back and forth, so that the roller brush 2 can clean during the movement of the cleaning device.

[0059] The present invention provides a second cleaning unit on at least one side of the first cleaning unit, and extends the cleaning surface of the second cleaning unit to the outside of the floor brush housing 1, thereby making up for the cleaning blind spot between the first cleaning unit and the outside of the floor brush housing 1, and increasing the cleaning coverage. When cleaning along the edge, the side of the roller brush 2 cannot achieve zero edge contact, and the second cleaning unit can extend into the cleaning dead corner to fill the gap between the roller brush 2 and the wall and furniture edge, thereby achieving comprehensive cleaning. In addition, the second cleaning unit can drive the dirt on the work surface toward the roller brush 2, thereby reducing residual stains and improving the cleaning effect.

[0060] In one embodiment of the present disclosure, reference Figure 2 and Figure 6 , the second cleaning unit is the side brush 3, and the second cleaning part is the bristles 31 on the side brush 3. The side brush 3 is located on at least one side of the roller brush 2, and its rotation axis deviates from the rotation axis of the roller brush 2. Since the side brush 3 is located on the outside of the roller brush 2, the cleaning blind area left between the outside of the roller brush 2 and the outside of the floor brush housing 1 can be reduced, thereby achieving zero edge contact of the floor brush assembly 200. The second cleaning unit can also be other cleaning parts besides the side brush 3, such as: a rag plate, a sweeping plate, etc., and the second cleaning unit will be specifically described below by taking the side brush 3 as an example.

[0061] In a specific embodiment, the second rotation axis is perpendicular to the first rotation axis, and the rotation axis of the side brush 3 is constructed to be perpendicular to the working surface. In this embodiment, the rotation axis of the side brush 3 is perpendicular to the rotation axis of the roller brush 2, so that the bottom surface of the side brush 3 can be used to clean the working surface, thereby maximizing the cleaning efficiency of the side brush 3. In another embodiment, the rotation axis of the side brush 3 is not necessarily perpendicular to the working surface, and can also be at a certain angle to the vertical direction. When cleaning close to the edge, the tilted side brush 3 can extend to a position closer to the outside, thereby further expanding the cleaning area. And the bristles of the tilted side brush 3 that are closer to the working surface when working can exert greater pressure on the working surface, which is beneficial to improving the cleaning effect. The present disclosure does not specifically limit the angle of the rotation axis of the side brush 3.

[0062] In one embodiment of the present disclosure, the second cleaning unit and the first cleaning unit are configured to be arranged in the direction of the first rotation axis, that is, the roller brush 2 and the side brush 3 are arranged in the direction of the rotation axis of the roller brush 2. Specifically, the orthographic projection of the second cleaning unit in the axial direction of the first cleaning unit is configured not to exceed the first cleaning unit, that is, the orthographic projection of the side brush 3 in the axial direction of the roller brush 2 does not exceed the roller brush 2. The projection of the roller brush 2 on the working surface has front and rear boundaries, and the distance between the front and rear boundaries is the diameter of the roller brush 2. The front and rear boundaries of the projection of the side brush 3 on the working surface do not exceed the front and rear boundaries of the projection of the roller brush 2 on the working surface, so that the front and rear positions of the side brush 3 are limited to the side projection range of the roller brush 2. The side brush 3 in the present disclosure is located on at least one side of the roller brush 2, and will not be forward or backward relative to the roller brush 2. The side brush 3 will not hinder the cleaning of the roller brush 2, and can make up for each other's cleaning blind spots.

[0063] If the side brush 3 is set too far forward, that is, it is beyond the position of the positive projection in the axial direction of the roller brush 2 from the front side, a cleaning dead angle will be formed in the front side of the roller brush 2. Specifically, when the wall in front of the cleaning device needs to be cleaned, the side brush 3 will contact the wall before the roller brush 2, and the roller brush 2 will be unable to move forward. Even if the roller brush 2 continues to move forward, the front side of the roller brush 2 will be difficult to touch the wall due to the presence of the side brush 3, resulting in a cleaning dead angle.

[0064] If the side brush 3 is set too far back, that is, it is beyond the position of the positive projection in the axial direction of the roller brush 2 from the rear side, there will still be cleaning dead corners on the side of the roller brush 2, and the side brush 3 cannot completely fill the gap on the side of the roller brush 2. Specifically, when the roller brush 2 is cleaning close to the edge, there is a gap between it and the wall or furniture edge, and the side brush 3 can only fill the rear part of the gap, but cannot fill the front part of the gap, so there are still cleaning dead corners.

[0065] In addition, the floor brush assembly 200 of the present invention has installation space only on both sides of the roller brush 2. Specifically, the roller brush 2 is arranged on the frontmost side of the floor brush assembly 200, and a sewage suction port, a rubber strip 7 and other structures are arranged on the rear side of the roller brush 2. It can be seen that there is no space for installing the side brush 3 on the front side or the rear side beyond the projection range of the roller brush 2. Therefore, the side brush 3 needs to be installed on at least one side in the axial direction of the roller brush 2, and its orthographic projection does not exceed the roller brush 2. The roller brush 2 and the side brush 3 can compensate for the cleaning blind spot problem caused by the installation problem.

[0066] In one embodiment of the present disclosure, the second cleaning unit is configured to move into the floor brush housing 1 under the action of an external force. Specifically, the side brush 3 is configured to be movably connected to the floor brush housing 1, and is configured to be able to move relative to the floor brush housing 1 in a direction parallel to the axial direction of the roller brush, and the side brush 3 can be retracted into the floor brush housing 1 when subjected to an external force. It should be noted that retracting into the floor brush housing 1 only means that, compared with the initial position of the side brush 3 when not subjected to an external force, the position of the side brush 3 when subjected to an external force is closer to the floor brush housing 1. The side brush 3 can be located at the maximum extension position during normal operation, so as to fill the gap on at least one side of the roller brush 2 when working close to the edge, and achieve comprehensive cleaning; when the side brush 3 collides with an obstacle, the side brush 3 can be retracted inward relative to the floor brush housing 1, so as to achieve obstacle avoidance, prevent the side brush 3 from being stuck by an obstacle, and avoid mutual damage caused by collision between the side brush 3 and the obstacle, thereby improving the user experience.

[0067] Specifically, an elastic device may be provided between the side brush 3 and the floor brush housing 1. When the side brush 3 collides with an obstacle, the elastic device is synchronously compressed and drives the side brush 3 to retract inward, thereby achieving obstacle avoidance. When the external force of the obstacle disappears, the side brush 3 moves to the outside of the floor brush housing 1 to the above-mentioned maximum extension position under the action of the reset force of the elastic device. In another embodiment, the side brush 3 may be connected to the floor brush housing 1 through a swinging mechanism, and the swinging mechanism may actively drive the side brush 3 to extend or retract. When the cleaning device detects an obstacle or a collision signal, the control unit in the cleaning device may control the swinging mechanism to actively drive the side brush 3 to retract inward, thereby achieving obstacle avoidance. The side brush 3 may also be retracted inward to avoid obstacles in other ways, and the present disclosure does not limit the specific obstacle avoidance form of the side brush 3.

[0068] In one embodiment of the present disclosure, the second cleaning unit includes a body and bristles 31 arranged in the circumferential direction of the bottom of the body. Specifically, the bristles 31 can be implanted hair or soft rubber with a certain hardness. In addition, the bristles 31 of the side brush 3 are conical, wherein the apex of the cone is the location of the body, the fixed ends of the multiple clusters of bristles 31 are fixedly connected to the body, and the free ends extend freely outward. The taper of the bristles 31 gradually slows down from the fixed end to the free end, and the free end spreads on the working surface, thereby forming an annular cleaning surface. The bristles 31 are set to be conical, so that the body of the side brush 3 will not directly contact the working surface, and only the bristles 31 can contact the working surface, thereby avoiding the body of the side brush 3 from scratching the working surface.

[0069] In one embodiment of the present disclosure, reference Figure 6 , the second cleaning unit is at least detachably connected to the first arm 5, and the position where the second cleaning unit contacts the first cleaning unit is configured to be no higher than the first rotation axis and is configured to be no higher than the bottom edge of the first arm 5. Thus, the structure for installing the side brush 3 is simplified to the greatest extent, the side brush 3 is miniaturized, and no other additional parts are required for installing the side brush 3. The first arm 5 is located on the driving side 11 and is configured to be used for installing the driving device 4. As mentioned above, the first arm 5 usually has a larger thickness, which results in a larger gap between the roller brush 2 on the driving side 11 and the side edge. Therefore, in the case of only one side brush 3, the side brush 3 needs to be arranged on the first arm 5, that is, on the driving side 11. In this way, the side brush 3 can fill the gap between the roller brush 2 and the side edge in the direction of the driving side 11, and clean the cleaning dead corner of the driving side 11. Two side brushes 3 can also be provided, and the two side brushes 3 can be respectively arranged on the first arm 5 and the second arm 6, so as to clean the cleaning dead corners on both sides of the roller brush 2 respectively.

[0070] In addition, when using the cleaning device, the user stands behind the cleaning device. At this time, from the user's perspective, the driving side 11 is the right side, and the disassembly side 12 is the left side. During cleaning, most users use their right hand as their dominant hand, and will use their right hand to grasp the handpiece 101 and use the right side as the side to clean. Therefore, it is necessary to at least set the side brush 3 on the right side, that is, the driving side 11, so that the cleaning dead corners that the roller brush 2 cannot cover can be cleaned during the side cleaning.

[0071] In this embodiment, the direction setting of the driving side 11 and the disassembly side 12 can facilitate the user to replace the roller brush 2. It is understandable that when the roller brush 2 needs to be replaced, the user usually comes to the front of the cleaning device. At this time, the disassembly side 12 is located on the right side of the user, so that the user can use the right hand to perform disassembly and assembly operations.

[0072] In one embodiment of the present disclosure, reference Figures 6 to 9The second cleaning unit is configured to be connected to the first arm 5 via a connecting mechanism, wherein the connecting mechanism includes a mounting seat 32 located on one of the second cleaning unit and the first arm 5, and a rotating shaft 30 located on the other of the second cleaning unit and the first arm 5. Figure 6 As shown, the mounting seat 32 is arranged on the side brush 3, and the rotating shaft 30 is arranged on the first arm 5, wherein the mounting seat 32 can be a part of the side brush 3 body mentioned above, or a structure arranged above the body, and the bristles 31 are located below the mounting seat 32. In another embodiment, the mounting seat 32 can be arranged on the first arm 5, and the rotating shaft 30 can be arranged on the side brush 3. The present disclosure does not limit the specific arrangement of the connection mechanism.

[0073] refer to Figure 6 and Figure 8 The rotating shaft 30 is provided with a clamping groove 301, and the rotating shaft 30 extends into the inner cavity 321 of the mounting seat 32, and is configured to cooperate with the clamping groove 301 through the clamp 34. The side brush 3 is detachably connected to the rotating shaft 30 through the clamp 34, and the user can conveniently disassemble and assemble the side brush 3 by himself through the clamp 34, so as to replace the side brush 3 that is worn after being used for a period of time. The clamping groove 301 is an arc groove provided on the rotating shaft 30. Specifically, the diameter of a small section of the rotating shaft 30 gradually decreases and then gradually increases, thereby forming a circle of concave arc surface, which is the clamping groove 301. Specifically, for the disassembly process: the user can directly use force to pull the side brush 3 off the rotating shaft 30. Since the diameter from the clamping groove 301 to the rotating shaft 30 gradually increases, the clamp 34 clamped in the clamping groove 301 is stretched open by the force, and the clamp 34 is deformed and thus detached from the clamping groove 301; alternatively, the user can also pull out the clamp 34 to detach the clamp 34 from the clamping groove 301, thereby removing the side brush 3. Regarding the installation process: the user can install the clamp 34 on the side brush 3 in advance. After the user aligns the side brush 3 with the rotating shaft 30, that is, inserts the rotating shaft 30 from the hole at the top of the side brush 3 into the inner cavity 321, the user can directly install the side brush 3 on the rotating shaft 30 with force. During this process, the clamp 34 is stretched open by the rotating shaft 30 and deformed, and rebounds and resets at the position of the clamping groove 301 with a reduced diameter, so as to be clamped to the clamping groove 301; or, after the user has completed the alignment, the user can clamp the clamp 34 into the clamping groove 301, so as to install the side brush 3 on the rotating shaft 30. The installed side brush 3 can rotate relative to the rotating shaft 30, so as to clean the working surface.

[0074] In a specific embodiment of the present disclosure, reference Figure 7 and Fig. 9The mounting seat 32 is provided with grooves 322 penetrating the inner cavity 321 on opposite sides thereof, and the clamp 34 is configured to be clamped in the groove 322, and the portion of the clamp 34 exposed from the inner cavity 321 is configured to cooperate with the clamping groove 301. Further, the two free ends of the clamp 34 are configured to be bent inwards to form clamping members 341, and the two clamping members 341 are configured to jointly constitute a clamping structure, and the two clamping members 341 are clamped in the groove 322 under elastic force, and are configured to extend to cooperate with the clamping groove 301 on the rotating shaft 30.

[0075] The groove 322 that passes through the inner cavity 321 of the mounting seat 32 divides the mounting seat 32 into a first portion 323 and a second portion 324. Fig. 9 As shown, the middle part of the clamp 34 is clamped on the first part 323 of the mounting seat 32 under the action of elasticity, that is, clamped in the groove 322. The two free ends of the clamp 34 are bent to form two clamping parts 341, and the ends of the two clamping parts 341 abut against the second part 324. During installation, the rotating shaft 30 is located in the inner cavity 321, and the part of the clamp 34 exposed from the inner cavity 321 cooperates with the clamping groove 301. Specifically, the two clamping parts 341 extend to cooperate with the clamping groove 301, so that they are clamped in the clamping groove 301 under the action of elastic force, so that the side brush 3 is installed on the rotating shaft 30.

[0076] The above provides a specific structure for installing the side brush 3. Those skilled in the art may also use other forms to install the side brush 3. The present disclosure does not specifically limit the installation method of the side brush 3. Several specific driving methods of the side brush 3 will be described in detail below.

[0077] In the cleaning state, the second cleaning unit is configured to contact the first cleaning unit so that the first cleaning unit drives the second cleaning unit to rotate, wherein the cleaning state is a working state in which the first cleaning unit rotates to clean the working surface. Figure 5, part of the second cleaning member is configured to extend below the first cleaning member, and the first cleaning member is configured to pre-press part of the second cleaning member on the working surface at least in the cleaning state, so as to drive the second cleaning unit to rotate during the rotation process. That is to say, part of the bristles 31 of the side brush 3 extend below the roller brush 2, and the first cleaning member on the surface of the roller brush 2 at least pre-presses part of the bristles 31 on the working surface during the cleaning process, thereby driving the side brush 3 to rotate together during the rotation of the roller brush 2. The cleaning surface at the bottom of the roller brush 2 can be in contact with the non-cleaning surface of part of the side brush 3. Specifically, the non-cleaning surface of the side brush 3 can be the upper surface of the side brush 3, and part of the bristles 31 of the side brush 3 is located below the roller brush 2. When the roller brush 2 rotates, the friction between the roller brush 2 and the upper surface of the bristles 31 of the side brush 3 can drive the side brush 3 to rotate, that is, the roller brush 2 converts the horizontal force into the rotational force of the side brush 3 in the vertical direction through friction. This embodiment realizes driving the side brush 3 to rotate by the friction between the roller brush 2 and the side brush 3, thereby simplifying the rotation driving method of the side brush 3 to the greatest extent. This embodiment does not need to additionally set up other driving structures or transmission structures, but can directly drive the side brush 3 to rotate through the existing roller brush 2 structure. This solution has a simple structure and saves production costs.

[0078] The first cleaning unit of the present disclosure can drive the second cleaning unit to rotate, that is, the roller brush 2 can drive the side brush 3 to rotate, so there is no need to set up an additional drive mechanism or transmission mechanism for the side brush 3, thereby saving space for the cleaning device. The roller brush 2 is the most important cleaning unit of the cleaning device. When the side brush 3 is additionally set up, the roller brush 2 can still retain its original length, thereby maintaining a sufficiently large cleaning area, so as not to affect the cleaning efficiency of the cleaning device. It can be seen that the present disclosure provides a cleaning device that does not affect the cleaning efficiency of the cleaning device and can also achieve edge cleaning at the same time.

[0079] Specifically, in the working state, the first cleaning unit is configured to rotate forward to clean the working surface, and the second cleaning unit rotates in the first direction under the action of the first cleaning unit to bring dirt on the working surface to the front side of the first cleaning unit. That is, the roller brush 2 rotates forward to clean the working surface in the working state, and the side brush 3 rotates in the first direction under the action of the roller brush 2 to bring dirt on the working surface to the front side of the roller brush 2. When the cleaning device moves forward to clean, the roller brush 2 can rotate forward to clean the working surface, referring to Figure 3 View direction, positive rotation direction is counterclockwise rotation (i.e. Figure 3 the direction indicated by the arrow on the middle roller brush 2); refer to Figure 5 View direction, the positive direction is Figure 5 Below the arrow on the middle roller brush 2. Figure 5In the viewing direction, the bristles 31 under the roller brush 2 can be subjected to downward friction, so that the side brush 3 rotates counterclockwise under the friction. Figure 5 The counterclockwise direction shown is the first direction.

[0080] When the side brush 3 rotates in the first direction, the part of the bristles 31 that is not pressed under the roller brush 2 can clean the working surface located at the side of the cleaning range of the roller brush 2, and this part of the bristles 31 can drive the dirt on the working surface to rotate along the first direction with the side brush 3. Figure 5 In the viewing direction, the bristles 31 on the left side of the side brush 3 can clean the working surface on the left side of the roller brush 2, and the bristles 31 on the left side can drive the dirt to rotate counterclockwise. Under the action of centrifugal force, the dirt will be thrown to the upper right position of the side brush 3, that is: Figure 2 From the perspective, the side brush 3 can bring dirt to the front side of the roller brush 2 during the rotation in the first direction. The roller brush 2 can continue to move forward during the cleaning process, so as to clean the dirt brought to the front side of the roller brush 2 by the side brush 3, thereby centrally cleaning the dirt through the roller brush 2, thereby achieving comprehensive cleaning.

[0081] In actual cleaning scenarios, since part of the side brush 3 is pressed under the roller brush 2, during the cleaning process, the clean water and cleaning liquid attached to the roller brush 2 can be transferred to the bristles 31 of the side brush 3, so that the bristles 31 of the side brush 3 are attached with water and cleaning liquid, thereby improving the cleaning effect of the side brush 3. During the rotation of the side brush 3, the part of the bristles 31 that is not pressed by the roller brush 2 can carry dirt and rotate, and when this part of the bristles 31 rotates to the bottom of the roller brush 2, the dirt is directly transferred to the surface of the roller brush 2, thereby achieving the cleaning of the side brush 3.

[0082] The roller brush 2 does not need to always press on part of the bristles 31, but only needs to press on part of the bristles 31 at least during the cleaning process. For example, the user can lift the cleaning device upwards during cleaning, and the roller brush 2 can move upwards off the ground and break away from the side brush 3. When the user puts down the cleaning device, the roller brush 2 naturally falls to a position close to the ground in the cleaning state, and presses on part of the bristles 31 again, thereby driving the side brush 3 to rotate.

[0083] Furthermore, the roller brush 2 always has a pressing force on the working surface during the cleaning process, thereby ensuring the cleaning effect of the roller brush 2. When the roller brush 2 rotates on the working surface, the above-mentioned pressing force will keep the friction between the roller brush 2 and the bristles 31 of the side brush 3 at a certain level, so that the friction force when the roller brush 2 rotates is sufficient to drive the side brush 3 to rotate. When the roller brush 2 gradually wears during use, the roller brush 2 can automatically drop (not visible to the naked eye), thereby keeping the pressing force on the working surface unchanged. It can be seen that whether it is a new roller brush 2 or a worn roller brush 2, its pressing force on the working surface can remain unchanged, and its friction on the bristles 31 of the side brush 3 can therefore be maintained at a certain level, thereby being able to drive the side brush 3 to rotate.

[0084] In one embodiment of the present disclosure, the rotation speed of the second cleaning unit is greater than three times the rotation speed of the first cleaning unit, that is, the rotation speed of the side brush 3 is more than three times the rotation speed of the roller brush 2. Figure 2 As shown, the circumference of the roller brush 2 is much larger than the circumference of the bristles 31 of the side brush 3. Specifically, the circumference of the roller brush 2 can be more than three times the circumference of the bristles 31. That is, one rotation of the roller brush 2 can drive the side brush 3 to rotate more than three times by friction, so that the rotation speed of the side brush 3 is more than three times the rotation speed of the roller brush 2. The side brush 3 located outside the roller brush 2 fills the cleaning blind spot. The high-speed rotating side brush 3 can better clean the working surface, improving the zero-edge cleaning effect of the floor brush assembly 200.

[0085] In one embodiment of the present disclosure, the second cleaning unit is configured to protrude from the outside of the floor brush housing 1, and is configured to rotate in a first direction under the friction of an obstacle to bring dirt on the working surface to the front side of the first cleaning unit; or, the second cleaning unit is configured to rotate in a second direction under the friction of an obstacle to bring dirt on the working surface to the rear side of the first cleaning unit. The force of the obstacle on the second cleaning unit is greater than the force of the first cleaning unit on the second cleaning unit. In this embodiment, the side brush 3 is not only driven to rotate by the roller brush 2, but also driven to rotate by the friction of the obstacle.

[0086] Specifically, refer to Figure 7 and Figure 8The outer peripheral surface of the body of the side brush 3 is provided with a flange 33 protruding from the outside of the floor brush housing 1, and the flange 33 is configured to drive the second cleaning unit to rotate under the friction force of the obstacle. The flange 33 can be a buffer portion provided on the outer peripheral surface of the body of the side brush 3, and the buffer portion protrudes from the outside of the floor brush housing 1 to generate a large friction force with the obstacle (for example, the wall, the skirting, the side of the furniture, etc.). In addition, the buffer portion has a certain elasticity, so it also has the functions of preventing scratches and buffering collisions. The elastic buffer portion can also increase the friction with the obstacle, so that the side brush 3 can rotate under the friction of the obstacle. When the cleaning device is cleaning against the edge, the flange 33 can be against the obstacle, for example: when the cleaning device is cleaning against the wall, the flange 33 can be against the wall; when the user moves the cleaning device forward and backward, the flange 33 drives the side brush 3 to rotate under the friction force of the wall.

[0087] When the user moves the cleaning device backward at the edge position, the flange 33 drives the side brush 3 to rotate in the first direction under the friction force of the obstacle. At the same time, since the roller brush 2 always keeps forward rotation, the roller brush 2 will also drive the side brush 3 to rotate in the first direction by friction. At this time, the roller brush 2 and the flange 33 provide the side brush 3 with the same direction of rotational force. The side brush 3 rotating in the first direction can remove the dirt at the edge position away from the edge position and bring the dirt on the working surface to the front side of the roller brush 2. During the cleaning process, the user usually drags the roller brush 2 back and forth repeatedly, so the roller brush 2 can move forward in the subsequent cleaning, thereby cleaning the dirt brought to the front side of the roller brush 2 by the side brush 3.

[0088] When the user moves the cleaning device forward at the edge position, the flange 33 drives the side brush 3 to rotate in the second direction under the friction force of the obstacle. At the same time, since the roller brush 2 always keeps rotating forward, the roller brush 2 can provide the side brush 3 with a rotational force to rotate in the first direction. At this time, the rotational forces provided by the roller brush 2 and the flange 33 to the side brush 3 are in opposite directions. Since the force of the obstacle on the side brush 3 is greater than the force of the roller brush 2 on the side brush 3, the side brush 3 will rotate in the second direction to move the dirt at the edge position away from the edge position and move the dirt on the work surface to the rear side of the roller brush 2. During the cleaning process, the user usually drags the roller brush 2 back and forth repeatedly, so the roller brush 2 can move backward during subsequent cleaning to clean the dirt brought to the rear side of the roller brush 2 by the side brush 3.

[0089] In one embodiment of the present disclosure, the body of the side brush 3 may be a roller, which is configured to extend to the outside of the floor brush housing 1 and is configured to drive the side brush 3 to rotate under the friction force of an obstacle. The roller drives the side brush 3 to rotate in a manner substantially consistent with the flange 33 mentioned above. The outer peripheral surface of the roller is configured as an arc surface, and when the cleaning device is cleaning against the edge, the roller can rest against the obstacle, for example: when the cleaning device is cleaning against the wall, the roller can rest against the wall; when the user moves the cleaning device back and forth, the roller drives the side brush 3 to rotate under the friction force of the wall. In this embodiment, there is no need to additionally set a flange 33 on the body of the side brush 3 for friction driving, but rather the body of the side brush 3 itself is used to drive the side brush 3 to rotate, thereby making the structure of the side brush 3 simple and saving production costs.

[0090] A sewage suction port is provided on the floor brush housing 1 at a position on the rear side of the first cleaning unit. The sewage suction port is located at the rear side of the first cleaning unit and faces the first cleaning unit. The sewage suction port is located in the middle of the rear side of the first cleaning unit, and the dirt cleaned by the first cleaning unit is sucked away through the sewage suction port. In one example, the sewage suction port is configured to at least clean the dirt brought to the rear side of the first cleaning unit by the second cleaning unit. The dirt brought to the rear side of the roller brush 2 by the side brush 3 can be directly sucked away by the sewage suction port. Specifically, the sewage suction port can be set to a long strip extending along the axial direction of the roller brush 2, and its length is at least consistent with the length of the roller brush 2, so as to facilitate the cleaning of the dirt adsorbed by the roller brush 2. In order to improve the cleaning effect of the sewage suction port, refer to Figure 2 and Figure 3 A rubber strip 7 is provided at the bottom of the floor brush housing 1 at the rear side of the roller brush 2. The rubber strip 7 can abut against the working surface to form a sealing structure, so that the airflow of the sewage suction port can be more concentrated, thereby improving the suction force of the sewage suction port.

[0091] In this embodiment, the flange 33 protruding from the outside of the floor brush housing 1 is provided on the outer peripheral surface of the body of the side brush 3, thereby realizing driving the side brush 3 to rotate in two ways at the same time, so that the cleaning device can adapt to more cleaning scenes. When the cleaning device cleans along the wall, cabinet edge and other scenes, the flange 33 can abut against the wall, cabinet surface and other positions, so that the side brush 3 rotates in the first direction or the second direction under its friction force, and then takes the dirt away from the edge position, and drives the dirt to the front side or the rear side of the roller brush 2, thereby achieving comprehensive cleaning. When the cleaning device is located in a relatively open scene, the roller brush 2 drives the side brush 3 to rotate in the first direction. In this way, the cleaning range of the cleaning device in the open area can be increased, and the cleaning effect can be improved. In addition, when encountering obstacles with a small surface area such as table legs and chair legs, the flange 3 is difficult to accurately abut against their surface. At this time, the roller brush 2 is still needed to drive the side brush 3 to rotate, thereby filling the gap between the side of the roller brush 2 and the floor brush housing 1, reducing the omission of dirt in the blind area, and improving the user experience.

[0092] In one embodiment of the present disclosure, the second cleaning unit includes bristles 31, and the length of the bristles 31 is configured to be greater than or equal to 5 mm. Specifically, since the bristles 31 of the side brush 3 are tapered, the length of the bristles 31 in this embodiment refers to the length of the projection of the bristles 31 on the working surface, that is, the length of the bristles 31 actually cleaning the working surface. Figure 5 As shown, the bristles 31 of the side brush 3 are evenly arranged in the circumferential direction of the side brush 3 body. When the length of the bristles 31 is greater than or equal to 5 mm, the total diameter of the side brush 3 is greater than or equal to 10 mm. As mentioned above, there is a gap of about 10 mm between the roller brush 2 on the driving side 11 and the side edge, so the total diameter of the side brush 3 is at least 10 mm, thereby filling the gap between the roller brush 2 and the side edge in the direction of the driving side 11.

[0093] When the diameter of the side brush 3 is greater than 10 mm, the side of the bristles 31 adjacent to the first cleaning unit is configured to extend to the bottom of the first cleaning member, and the side away from the first cleaning unit is configured to extend to be flush with the outside of the floor brush housing 1 or beyond the outside of the floor brush housing 1. The side of the bristles 31 adjacent to the roller brush 2 extends to the bottom of the roller brush 2, so that the roller brush 2 can drive the side brush 3 to rotate during the rotation process. The bristles 31 extend outward from the side away from the roller brush 2 to fill the gap on the side of the roller brush 2. Specifically, when there is a gap of about 10 mm between the roller brush 2 and the side, the length of the side brush 3 not pressed under the roller brush 2 in the axial direction of the roller brush 2 exceeds 10 mm, which is sufficient to fill the gap.

[0094] The bristles 31 need to extend outward at least to be flush with the outside of the floor brush housing 1, so as to fill the gap between the outside of the floor brush housing 1 and the roller brush 2. The roller brush 2 cannot be attached to the edge due to the thickness of the floor brush housing 1 and the first arm 5, the second arm 6 and other structures. Therefore, as long as the bristles 31 of the side brush 3 are extended to be flush with the outside of the floor brush housing 1, the cleaning dead corner caused by the thickness of the side edge of the floor brush housing 1 can be filled. At this time, as long as the outside of the floor brush housing 1 is tightly attached to the edge when cleaning along the edge, the side brush 3 can completely fill the gap between the roller brush 2 and the side edge.

[0095] In one embodiment of the present disclosure, the total area of ​​the second cleaning member in contact with the first cleaning member is greater than the total area of ​​its cleaning surface, and / or the surface friction coefficient of the second cleaning member in contact with the first cleaning member is greater than the friction coefficient of its cleaning surface. The total area of ​​the non-cleaning surface above the bristles 31 can be greater than the total area of ​​the cleaning surface at the bottom thereof, which makes the cross section of the bristles 31 present an inverted trapezoid, thereby increasing the friction between the bristles 31 of the roller brush 2 and the side brush 3, and improving the force with which the roller brush 2 drives the side brush 3 to rotate.

[0096] The friction coefficient of the non-cleaning surface on the bristles 31 can be greater than the friction coefficient of the cleaning surface at the bottom thereof, and the non-cleaning surface of the bristles 31 can be roughened to a certain extent. For example, the non-cleaning surface of the bristles 31 can be set to be uneven, thereby increasing the friction between the bristles 31 of the roller brush 2 and the side brush 3, and enhancing the force with which the roller brush 2 drives the side brush 3 to rotate.

[0097] In the actual cleaning process, users usually avoid the cleaning equipment from scratching the wall, so the bristles 31 are preferably able to extend outward to a position beyond the outside of the floor brush housing 1. In this way, when cleaning along the edge, there is no need to make the outside of the floor brush housing 1 close to the edge, and the side brush 3 can still completely fill the gap between the roller brush 2 and the side, reducing the cleaning blind area left between the outside of the roller brush 2 and the outside of the floor brush housing 1, and achieving zero edge contact of the floor brush assembly 200.

[0098] When the length of the bristles 31 is exactly 5 mm, that is, the diameter of the side brush 3 is exactly 10 mm, in order to fill the 10 mm gap between the roller brush 2 and the side edge, the side brush 3 needs to be completely set on the outside of the roller brush 2, and the orthographic projections of the second cleaning unit and the first cleaning unit on the working surface are constructed not to overlap. The orthographic projections of the side brush 3 and the roller brush 2 on the working surface do not overlap. At this time, the bristles 31 will not be pressed under the roller brush 2, and the roller brush 2 cannot drive the side brush 3 to rotate by friction. The side brush 3 needs to be driven by other means. To this end, the present disclosure also provides the following three specific driving methods, so that the side brush 3 can be driven to rotate even when the roller brush 2 and the side brush 3 are separately set. Of course, the following three driving methods are only specific examples, and the driving methods of the side brush 3 are not limited to the following three.

[0099] In one embodiment of the present disclosure, the second cleaning unit is configured to protrude from the outside of the floor brush housing 1, and is configured to rotate in the first direction under the friction of an obstacle to bring dirt on the working surface to the front side of the first cleaning unit; or, the second cleaning unit is configured to rotate in the second direction under the friction of an obstacle to bring dirt on the working surface to the rear side of the first cleaning unit. Specifically, the outer peripheral surface of the body of the side brush 3 is provided with a flange 33 protruding from the outside of the floor brush housing 1, and the flange 33 is configured to drive the side brush 3 to rotate under the friction force of an obstacle; or, the body of the side brush 3 is configured to drive the side brush 3 to rotate under the friction of an obstacle.

[0100] When the user moves the cleaning device backward at the edge position, the flange 33 or the body of the side brush 3 drives the side brush 3 to rotate in the first direction under the friction force of the obstacle forward, so as to bring the dirt on the working surface to the front side of the roller brush 2; when the user moves the cleaning device forward at the edge position, the flange 33 or the body of the side brush 3 drives the side brush 3 to rotate in the second direction under the friction force of the obstacle forward, so as to bring the dirt on the working surface to the rear side of the roller brush 2. The roller brush 2 can move forward and backward during subsequent cleaning, so as to clean the dirt brought to the front or rear side of the roller brush 2 by the side brush 3, and the dirt on the rear side of the roller brush 2 can also be directly cleaned by the dirt suction port arranged behind the roller brush 2.

[0101] This embodiment realizes driving the side brush 3 to rotate by the friction of obstacles. When the cleaning device is cleaning along the wall, cabinet edge, etc., the flange 33 or the body of the side brush 3 can abut against the wall, cabinet surface, etc., so that the side brush 3 rotates in the first direction or the second direction under its friction force, and then drives the dirt to the front side or the rear side of the roller brush 2, thereby realizing the centralized cleaning of the dirt by the roller brush 2.

[0102] In another embodiment of the present disclosure, an air flow channel is provided on the floor brush housing 1, and the air flow in the air flow channel is configured to drive the second cleaning unit to rotate. Specifically, an air outlet or air intake device can be provided on the floor brush housing 1, and the air outlet or air intake port is provided at a position adjacent to the side brush 3. The air flow can drive the side brush 3 to rotate, so that the side brush 3 can clean the position of the side of the roller brush 2. In a specific embodiment, the air flow channel can be connected to the exhaust channel of the suction motor of the cleaning device, and the air discharged through the exhaust channel of the suction motor flows through the air flow channel and is discharged from the air outlet of the air flow channel toward the side brush 3, and the discharged air flow drives the side brush 3 to rotate. Alternatively, the air flow channel can be the above-mentioned sewage suction port, and while cleaning the dirt on the roller brush 2 and the working surface, the air flow of the sewage suction port can also drive the side brush 3 to rotate, thereby cleaning the dirt on the side of the roller brush 2, reducing the cleaning blind area left between the outside of the roller brush 2 and the outside of the floor brush housing 1, and realizing zero edge contact of the floor brush assembly 200.

[0103] In another embodiment of the present disclosure, a transmission mechanism may be provided between the roller brush 2 and the side brush 3. When the driving device 4 drives the roller brush 2 to rotate in the horizontal direction, the transmission mechanism can convert the rotational force of the roller brush 2 rotating along the horizontal axis into the rotational force of the side brush 3 rotating along the vertical axis. The transmission mechanism may include various types of transmission mechanisms such as gears, connecting rods or sprockets, and the present disclosure does not limit this. In this embodiment, by providing a transmission mechanism, the roller brush 2 can simultaneously drive the side brush to rotate during the rotation process, thereby cleaning the dirt on the side of the roller brush 2, thereby reducing the cleaning blind area left between the outer side of the roller brush 2 and the outer side of the floor brush housing 1, and achieving zero edge contact of the floor brush assembly 200.

[0104] According to a second aspect of the present disclosure, a cleaning device is also provided, including a floor brush assembly 200, the floor brush assembly 200 including: a floor brush housing 1, a first cleaning unit and a second cleaning unit. The first cleaning unit is rotatably connected to the floor brush housing 1, and in a working state, the first cleaning unit is configured to rotate forward, and the cleaning device has a tendency to move forward under the action of the first cleaning unit rotating forward. Figure 2 and Figure 3 , the direction indicated by the arrow on the roller brush 2 is the forward direction. The second cleaning unit is configured to protrude from the outside of the floor brush housing 1, and is configured to rotate under the friction of the obstacle. When the cleaning device moves forward and the second cleaning unit does not come into contact with the obstacle, the second cleaning unit is configured to rotate in the first direction; when the cleaning device moves forward and the second cleaning unit comes into contact with the obstacle, the second cleaning unit is configured to rotate in the second direction.

[0105] The second cleaning unit can rotate in the first direction under the driving action of the first cleaning unit, or under the driving action of other driving structures. When the second cleaning unit comes into contact with an obstacle, the second cleaning unit can rotate in the second direction under the action of friction. It can be seen that the force of the obstacle on the second cleaning unit is greater than the rotation driving force in the first direction.

[0106] The cleaning device in this embodiment has exactly the same composition and connection relationship as the cleaning device described above. A person skilled in the art can undoubtedly deduce the composition and usage of the floor brush assembly 200 in this embodiment based on the descriptions described above, and will not be described in detail here.

[0107] Embodiment 2

[0108] This embodiment also provides a cleaning device, which is different from the first embodiment in that the second cleaning unit of this embodiment has a different structure from that of the first embodiment, and the other structures of the cleaning device are completely consistent with those described in the first embodiment, and will not be described in detail here. Figures 10 to 17 , the structure and working mode of the second cleaning unit of this embodiment are introduced in detail.

[0109] refer to Fig.11 The second cleaning unit includes a body, and the second cleaning member is arranged on the bottom end surface of the body. Specifically, the second cleaning member is at least one brush piece 36 arranged on the body. The second cleaning unit of this embodiment is a side brush 3, and the side brush 3 body may include a mounting seat 32. Three brush pieces 36 are arranged on the lower end surface (i.e., the surface facing the working surface) of the mounting seat 32 of this embodiment, and are spaced apart along the circumferential direction. In other embodiments, the number of brush pieces 36 may also be two, four, five, etc. This embodiment is described by taking the arrangement of three brush pieces 36 as an example.

[0110] In clean state, refer to Figures 18 to 20 , the second cleaning unit is configured to rotate in a first direction with respect to the working surface about a second rotation axis. The second rotation axis is configured to deviate from the first rotation axis of the roller brush 2. Specifically, the angle between the second rotation axis and the first rotation axis is configured to be greater than 0° and less than or equal to 90°, so that the roller brush 2 and the side brush 3 rotate in different directions. Preferably, the second rotation axis is perpendicular to the first rotation axis, and the rotation axis of the side brush 3 is configured to be perpendicular to the working surface, so that the bottom surface of the side brush 3 can be used to clean the working surface, thereby maximizing the cleaning efficiency of the side brush 3.

[0111] At least in the cleaning state, the brush sheet 36 is configured to be deformed in a direction away from the center of the body by an external force during the rotation of the body, so as to clean the working surface. In the non-cleaning state, the brush sheet 36 at least partially contacts the working surface, for example: Fig.11 As shown, the lower end surface S1 of the brush sheet 36 is in contact with the working surface. When the side brush 3 starts to rotate, the lower end surface S1 of the brush sheet 36 in contact with the working surface will rub against the working surface. Under the action of friction and extrusion of the working surface, and under the action of the centrifugal force of rotation, the flexible brush sheet 36 will be deformed. Specifically, the brush sheet 36 deforms in a direction away from the center of the body, and the three brush sheets 36 can be deformed outward together, that is, open to the outside. In this way, the inner side surface S2 of the brush sheet 36 (that is, the side of the brush sheet 36 facing the center of the body) fits the working surface, which increases the contact area between the brush sheet 36 and the working surface, and improves the cleaning effect of the brush sheet 36 on the working surface.

[0112] In one embodiment of the present disclosure, reference Fig.13 , the body is located in the projection area of ​​the floor brush housing 1 on the working surface. It is understandable that the body of the side brush 3 is usually made of a hard material that cannot be deformed. During the operation of the cleaning device, the body of the side brush 3 located in the projection area of ​​the floor brush housing 1 on the working surface will not expand or contact with obstacles, thereby preventing the cleaning device from being stuck due to the side brush 3.

[0113] In the cleaning state, the brush piece 36 is constructed to change its shape to exceed the projection area of ​​the floor brush housing 1 on the working surface. In the actual cleaning process, when the cleaning device is cleaning along the edge, the user usually avoids the cleaning device from scratching the wall, and there is also a gap between the roller brush 2 and the side of the floor brush assembly 200, so that there is usually a certain gap between the floor brush assembly 200 and the wall, thereby leaving a certain cleaning blind area; the brush piece 36 in this embodiment can change its shape to a position beyond the projection area of ​​the floor brush housing 1, and the brush piece 36 can extend into the cleaning blind area, which fills the gap between the roller brush 2 and the wall, reduces the cleaning blind area, and realizes zero edge contact of the floor brush assembly 200.

[0114] Furthermore, when the second cleaning unit is not rotating, the brush sheet 36 is configured to be located within the edge of the body. Specifically, in a non-cleaning state, the brush sheet 36 may not be deformed. If part of the inner side surface S2 of the brush sheet 36 is already in contact with the working surface when the side brush 3 is not rotating, the strength of the deformed position is insufficient, and it is easy to break due to friction after a period of use, and the life of the side brush 3 is short.

[0115] Furthermore, in a non-cleaning state, the brush piece 36 can be constructed to extend vertically downward, or be connected to the side brush 3 body in a slightly outwardly expanded form, and the outwardly expanded angle should not be too large. Specifically, the angle at which the brush piece 36 extends from the side brush 3 body toward the working surface is between 90° and 110°. Preferably, the brush piece 36 is vertically connected to the end face of the side brush 3 body. Compared with connecting the brush piece 36 to the side brush 3 body with a large outward angle, the strength of the connection between the brush piece 36 extending vertically downward and the body is the greatest, and the connection position is not prone to breakage, thereby extending the service life of the side brush 3.

[0116] In one embodiment of the present disclosure, the brush piece 36 is made of soft rubber with a hardness range of 50-70HA. The traditional side brush 3 is usually the side brush 3 with planted hair in Example 1. The planted hair has problems such as easy hair entanglement, easy wear, and easy dirt hiding. Specifically, the fine planted hair wears severely in the cleaning state, and basically needs to be replaced after one hour of use, which provides a poor user experience; if the planted hair is thickened to overcome the wear problem, the friction between the side brush 3 and the work surface will be too large, making it difficult to drive the rotation. When using the planted hair side brush 3 to clean heavy dirt such as soy sauce, dirt can easily enter the gap between the planted hairs. When entering the next area for cleaning, the side brush 3 will bring the dirt to that area, and the cleaning function cannot be performed normally.

[0117] Unlike the traditional side brush 3 with planted hair, this embodiment uses a brush piece 36 made of soft rubber to clean the working surface, which effectively solves the problems of the traditional side brush 3 with planted hair. Specifically, the wide brush piece 36 is not easy to wear out in the cleaning state, and can be used for a long time without frequent replacement; the flexible brush piece 36 can adjust the contact area with the working surface through deformation, thereby changing the friction force it is subjected to, and the side brush 3 will not be unable to rotate due to excessive friction; there is no place on the brush piece 36 that is easy to hide dirt, and the soft rubber material is very easy to clean after being stained, so the side brush 3 will not bring dirt into other areas after cleaning heavy dirt, ensuring the cleaning effect of the side brush 3.

[0118] The hardness of the brush sheet 36 of this embodiment is in the range of 50-70. If the hardness of the brush sheet 36 is less than 50, that is, the brush sheet 36 is too soft, the brush sheet 36 will not be wear-resistant enough, and the brush sheet 36 will be easily worn under the friction and extrusion of the working surface, resulting in a reduced service life of the side brush 3. If the hardness of the brush sheet 36 is greater than 70, that is, the brush sheet 36 is too hard, the brush sheet 36 is not easy to deform and open during the rotation of the side brush 3, and the contact area between the brush sheet 36 and the working surface cannot be guaranteed, thereby reducing the cleaning effect.

[0119] The side brush 3 rotates in a first direction in the cleaning state, Fig.11 , Fig.12 and Fig. 20 In one embodiment of the present disclosure, the first direction is the clockwise direction. Fig.11 and Fig.12 , the two opposite ends of the brush sheet 36 are denoted as the first end 361 and the second end 362. In the first direction, the brush sheet 36 is constructed to extend from its first end 361 to the second end 362 in a manner gradually away from the rotation center of the second cleaning unit. Specifically, when the side brush 3 starts to rotate in the first direction, the second end 362, which is farther from the rotation center of the side brush 3, will first be subjected to the friction of the working surface, thereby making the brush sheet 36 have a tendency to gradually open outward from the first end 361 to the second end 362, which is conducive to the deformation and opening of the brush sheet 36 outward, so that the brush sheet 36 can be further extended outward, extending to the side of the floor brush or extending out of the side of the floor brush, and making the inner side surface S2 of the brush sheet 36 stick to the working surface. The extension direction of the brush sheet 36 allows it to be smoothly unfolded only when the side brush 3 rotates in the first direction. It should be noted that in the cleaning state, the roller brush 2 usually only rotates forward for cleaning, and the side brush 3 only rotates in the first direction for cleaning, and does not rotate in the opposite direction, so the brush sheet 36 only needs to be unfolded in one direction and attached to the working surface.

[0120] Furthermore, the side brush 3 rotates in the first direction in the cleaning state, which is conducive to the brush sheet 36 pushing the dirt in front of the side brush 3 away from the edge position and pushing it to the roller brush 2, so that the roller brush 2 can pick up the dirt. Fig. 20 In the viewing direction, the side brush 3 rotates in a first direction when cleaning along the edge. During the rotation, the brush plate 36 can scrape the dirt located on the left side and front side of the side brush 3 in a clockwise direction to the right side, that is, the side where the roller brush 2 is located. The roller brush 2 can pick up the dirt to achieve cleaning.

[0121] In actual application scenarios, before the side brush 3 starts to rotate, the brush sheet 36 may not be completely flat. For example, the brush sheet 36 may be partially bent inward, so that part of the outer side surface of the brush sheet 36 is attached to the working surface. In this case, when the brush sheet 3 starts to rotate in the first direction, under the friction of the working surface, the brush sheet 36 has a tendency to gradually open outward from the first end 361 to the second end 362, so that the brush sheet 36 can return to the open state with the inner side surface S2 attached to the working surface.

[0122] In one embodiment of the present disclosure, the brush sheet 36 is configured to be arc-shaped, and the first end 361 smoothly extends along the arc to the second end 362, thereby forming an arc-shaped brush sheet 36. The arc-shaped structure makes the brush sheet 36 easier to deform, such as Fig.12 As shown, the shapes of the three brush pieces 36 can be exactly the same, so that the cleaning range of the brush piece 36 after deformation is basically circular. Furthermore, in the first direction, the brush piece 36 is constructed to extend from its first end 361 to the second end 362 in a manner gradually away from the rotation center of the second cleaning unit, so that the brush piece 36 and the body are connected by a line. If the brush piece 36 and the body are connected by a point connection, the strength of the connection position will be too low, and it is easy to break during the friction with the working surface. Therefore, this embodiment uses a line connection to connect the brush piece 36 and the body, which enhances the strength of the connection and extends the service life of the side brush 3.

[0123] In one embodiment of the present disclosure, reference Fig.11, the side of the first end 361 of the brush piece 36 is constructed to gradually tilt from the position connected to the body to its end face, so that the length of the free end of the brush piece 36 is less than the length of the connecting end of the brush piece 36, wherein the connecting end of the brush piece 36 is the end of the brush piece 36 connected to the body, and the free end of the brush piece 36 is the end opposite to the connecting end. For a single brush piece 36, when the side brush 3 starts to rotate along the first direction, the second end 362 farther from the rotation center of the side brush 3 will first be subjected to the friction force of the working surface, thereby causing the second end 362 to begin to deform first; in contrast, the first end 361 closer to the rotation center of the side brush 3 will be deformed last. During the rotation process, the contact area between the second end 362 and the ground is greater than the contact area between the first end 361 and the ground. The relatively large friction area of ​​the second end 362 is conducive to the brush piece 36 opening outward from the second end 362, and it can always remain in an open state during the rotation process. During the rotation process, the interference between the deformed brush sheet 36 and the working surface is reduced, so the friction between the brush sheet 36 and the working surface is reduced accordingly, thereby preventing the friction from being too large and affecting the smoothness of the rotation of the side brush 3. In addition, the length of the free end of the brush sheet 36 is less than the length of the connecting end, which is conducive to the deformation and opening of the brush sheet 36. The longer connecting end enhances the connection stability between the brush sheet 36 and the body, and enhances the stability of the brush sheet 36 to maintain the open state after opening. If the side of the first end 361 of the brush sheet 36 is perpendicular to the bottom surface of the body, the brush sheet 36 is prone to wrinkles on one side of the first end 361 under the action of friction, and cannot be fully unfolded. In this embodiment, the side of the first end 361 is set as an inclined side, thereby increasing the length of the side of the first end 361, and the deformation amount on both sides of the brush sheet 36 is balanced, which is conducive to making the brush sheet 36 unfold smoothly.

[0124] In one embodiment of the present disclosure, in a non-cleaning state, that is, the roller brush 2 does not rotate, and the side brush 3 does not rotate, the brush sheet 36 has a certain interference fit with the working surface. When in the cleaning state with the roller brush 2 rotating, the brush sheet 36 rotates driven by the roller brush 2, and the brush sheet 36 is opened by the friction of the working surface, so that the inner side surface S2 of the brush sheet 36 touches the ground, and the ground contact area is the open ground contact area of ​​the interference fit. In one example, the interference fit between the brush sheet 36 and the working surface is 1.5-3.5mm. In the non-cleaning state, the side brush 3 does not rotate, and the brush sheet 36 is in interference contact with the working surface, so that the brush sheet 36 may have irregular bends. When the cleaning device is in the cleaning state, the roller brush 2 rotates to drive the side brush 3 to rotate. The special structure of the brush sheet 36, under the action of the rotational centrifugal force and the friction of the working surface, causes the brush sheet 36 to rotate in an irregular manner. Fig.18 The morphology shown is expanded.

[0125] For further reference, Fig.17, the arc-shaped brush piece 36 is unfolded to be a trapezoid, wherein the bottom side of the trapezoid is the position where the brush piece 36 is connected to the body line; the top side of the trapezoid is the free end surface of the brush piece 36 for contacting the working surface when not rotating; the hypotenuse on the left side of the trapezoid is the inclined side of the first end 361 of the brush piece 36; and the right side of the trapezoid is the side edge of the second end 362 of the brush piece 36. Fig.17 As shown, an angle α is formed between the inclined edge of the first end 361 of the brush piece 36 and the end surface of the body, and an angle β is formed between the side edge of the second end 362 of the brush piece 36 and the end surface of the body, wherein α<β≤90°.

[0126] like Fig.17 As shown in Figure ①, the arc-shaped brush piece 36 can be unfolded into a right-angle trapezoid, β = 90°, and the side of the second end 362 of the brush piece 36 is perpendicular to the end surface of the body. This maximizes the area of ​​the second end 362 of the brush piece 36, which is conducive to the deformation and opening of the brush piece 36 from the second end 362. Fig.17 As shown in Figure ②, the side edge of the second end 362 of the brush piece 36 can also be an inclined edge with a predetermined angle to the end face of the body, that is, α<β<90. This makes the area of ​​the second end 362 of the brush piece 36 larger than the first end 361, which is conducive to the deformation and opening of the brush piece 36 from the second end 362. During the rotation of the side brush 3, the second end 362 deforms and opens, and contacts the working surface with a larger area, thereby further increasing the friction force, thereby increasing the deformation amount and improving the expansion range of the brush piece 36. Among them, Fig.17 The solution of β=90° shown in Figure ① is the most preferred implementation of this embodiment. The deformation of the brush piece 36 is maximized, and the cleaning area of ​​the inner side surface S2 of the brush piece 36 after touching the ground is the largest, thereby achieving the best cleaning effect.

[0127] refer to Fig.10 and Fig.13 The first cleaning unit is a roller brush 2, which is a cylindrical structure, and its two ends are respectively rotatably connected to the floor brush housing 1. Roller brush bristles 21 can be provided on the outer surface of the roller brush 2, and water can be attached to the roller brush bristles 21 and rotate with the roller brush 2 to clean the working surface. Specifically, the roller brush 2 includes a roller and roller brush bristles 21, and the roller brush bristles 21 are coated on the roller.

[0128] In one embodiment of the present disclosure, in the cleaning state, part of the brush sheet 36 is configured to extend below the roller brush 2, and the roller brush bristles 21 on the surface of the roller brush 2 can pre-press part of the brush sheet 36 on the working surface during the cleaning process. In this way, the roller brush 2 can clean the brush sheet 36, and the water or cleaning liquid on the roller brush 2 can wet the brush sheet 36 and rub the cleaning brush sheet 36 during the rotation process. The brush sheet 36 can remain clean, so that the dirt picked up during the cleaning process will not be brought to other cleaning areas next.

[0129] In one embodiment of the present disclosure, the body is configured to contact the side wall 22 of the roller brush 2, and in the cleaning state, the second cleaning unit rotates under the friction of the side wall 22 of the roller brush 2. Specifically, the side wall 22 is located on the drum, and the side wall 22 is the side end surface of the drum. The body of the side brush 3 is configured to contact the side wall 22 of the roller brush 2, and in the cleaning state, the second cleaning unit rotates under the friction of the side wall 22 of the roller brush 2. The roller brush 2 rotates forward to clean the working surface in the cleaning state, refer to Fig.10 View direction, the positive direction is clockwise (i.e. Fig.10 In the direction indicated by the arrow on the roller brush 2); refer to Fig.12 View direction, the positive direction is Fig.12 The side brush 3 is below the arrow marked on the middle roller brush 2. The body of the side brush 3 can keep in contact with the side wall 22 of the roller brush 2. When the roller brush 2 is rotating forward, the side wall 22 will rub the body of the side brush 3, and the side brush 3 can rotate in the first direction driven by the friction force.

[0130] This embodiment realizes driving the side brush 3 to rotate by the friction between the side wall 22 of the roller brush 2 and the side brush 3, thereby simplifying the rotation driving method of the side brush 3 to the greatest extent. This embodiment does not need to set up other driving structures or transmission structures, but can directly drive the side brush 3 to rotate by the existing roller brush 2 structure. The structure of this scheme is simple and saves production costs. The roller brush 2 is the most important cleaning unit of the cleaning equipment. Since there is no need to set up an additional driving mechanism for the side brush 3, the roller brush 2 can still maintain its original length, thereby maintaining a sufficiently large cleaning area, so as not to affect the cleaning efficiency of the cleaning equipment. In one embodiment of the present disclosure, the body is made of the same material as the brush sheet 36 and is constructed to be integrally formed with the brush sheet 36. Compared with using a rigid material such as hard plastic to make the side brush 3 body, this embodiment uses soft rubber to make the side brush 3 body, thereby making it softly contact and rub with the drum side wall 22, preventing damage caused by mutual hard friction, and affecting the service life of the side brush 3 and the roller brush 2; in addition, the body made of soft rubber can generate a large friction force during friction, which is conducive to driving the side brush 3 to rotate. In this embodiment, since the main body and the brush piece 36 are made of the same material, the side brush 3 can be directly produced in one piece. Compared with the solution of splicing the brush piece 36 to the main body, the connection between the one-piece brush piece 36 and the main body is the strongest, is less likely to break, and has a long service life.

[0131] In another embodiment of the present disclosure, referring to Fig.11, a friction portion 37 is provided on the outer peripheral surface of the body, and in the cleaning state, the friction portion 37 is constructed to contact the side wall 22 of the roller brush 2. As mentioned above, the body of the side brush 3 may include a mounting seat 32, and the mounting seat 32 may be made of a material such as hard plastic. A friction portion 37 is wrapped on the outer peripheral surface of the mounting seat 32, and the friction portion 37 can be used to rub against the side wall 22 of the roller brush 2. The friction portion 37 can be made of a soft rubber material, so that the friction portion 37 and the roller side wall 22 are in soft contact and friction, thereby preventing damage caused by mutual hard friction; in addition, the friction portion 37 made of soft rubber material can generate a large friction force during friction, which is conducive to driving the side brush 3 to rotate. The outer peripheral surface of the friction portion 37 can be constructed as an uneven wavy surface, thereby further increasing the friction force. The soft rubber friction portion 37 can be integrally formed with the brush sheet 36.

[0132] Similar to the first embodiment, the rotation speed of the second cleaning unit is greater than three times the rotation speed of the first cleaning unit, that is, the rotation speed of the side brush 3 is greater than three times the rotation speed of the roller brush 2. The circumference of the roller is greater than three times the circumference of the friction portion 37, that is, one rotation of the roller brush 2 can drive the side brush 3 to rotate more than three times by friction, so that the rotation speed of the side brush 3 is greater than three times the rotation speed of the roller brush 2.

[0133] Similar to the first embodiment, in addition to using the roller brush 2 to drive the side brush 3 to rotate, the side brush 3 in this embodiment may also adopt other driving methods. In one embodiment of the present disclosure, the friction portion 37 may be similar to the flange 33 in the first embodiment. Specifically, the friction portion 37 is constructed to protrude from the outside of the floor brush housing 1, and is constructed to drive the side brush 3 to rotate under the friction force of the obstacle. The friction portion 37 may be a rubber package provided on the outer peripheral surface of the body of the side brush 3, and the rubber package protrudes from the outside of the floor brush housing 1 to generate a large friction force with the obstacle (for example: wall, skirting, furniture side, etc.). In addition, the friction portion 37 may have a certain elasticity, so it also has the functions of preventing scratches, buffering collisions, etc. The friction portion 37 can also increase the friction with the obstacle, so that the side brush 3 can rotate under the friction of the obstacle. When the cleaning device is cleaning along the edge, the friction part 37 can be against an obstacle, for example, when the cleaning device is cleaning against a wall, the friction part 37 can be against the wall; when the user moves the cleaning device forward and backward, the friction part 37 drives the side brush 3 to rotate under the friction force of the wall.

[0134] Similar to the first embodiment, the side brush 3 in this embodiment can also be detachably connected to the first arm 5 through a connecting mechanism. The side brush 3 is detachably connected to the bottom of the first arm 5 through the connecting mechanism. The user can disassemble and assemble the side brush 3 by himself, so as to replace the worn side brush 3. In a specific embodiment of the present disclosure, refer to Figures 13 to 16 The connecting mechanism includes a mounting seat 32 and a rotating shaft 30, such as Fig.14As shown, the mounting seat 32 is arranged on the side brush 3, and the rotating shaft 30 is arranged on the first arm 5. A clamping groove 301 is arranged on the rotating shaft 30, and the rotating shaft 30 extends into the inner cavity 321 of the mounting seat 32, and is configured to cooperate with the clamping groove 301 through a clamp 34. The side brush 3 is detachably connected to the rotating shaft 30 through the clamp 34, and the user can conveniently disassemble and assemble the side brush 3 by himself through the clamp 34, so as to replace the side brush 3 that is worn after being used for a period of time.

[0135] The clamping groove 301 is an arc groove provided on the rotating shaft 30. Specifically, the diameter of a small section on the rotating shaft 30 gradually decreases and then gradually increases, thereby forming a circle of concave arc surface, which is the clamping groove 301. Specifically, for the disassembly process: the user can directly use force to pull the side brush 3 off the rotating shaft 30. Since the diameter from the clamping groove 301 to the rotating shaft 30 gradually increases, the clamp 34 clamped in the clamping groove 301 is stretched open by force, and the clamp 34 is deformed and thus separated from the clamping groove 301; or, the user can also pull out the clamp 34 to separate the clamp 34 from the clamping groove 301, thereby removing the side brush 3. Regarding the installation process: the user can install the clamp 34 on the side brush 3 in advance. After the user aligns the side brush 3 with the rotating shaft 30, that is, inserts the rotating shaft 30 from the hole at the top of the side brush 3 into the inner cavity 321, the user can directly install the side brush 3 on the rotating shaft 30 with force. During this process, the clamp 34 is stretched open by the rotating shaft 30 and deformed, and rebounds and resets at the position of the clamping groove 301 with a reduced diameter, so as to be clamped to the clamping groove 301; or, after the user has completed the alignment, the user can clamp the clamp 34 into the clamping groove 301, so as to install the side brush 3 on the rotating shaft 30. The installed side brush 3 can rotate relative to the rotating shaft 30, so as to clean the working surface.

[0136] In a specific embodiment of the present disclosure, reference Fig.15 and Fig.16 The mounting seat 32 is provided with grooves 322 penetrating the inner cavity 321 on opposite sides thereof, and the clamp 34 is configured to be clamped in the groove 322, and the portion of the clamp 34 exposed from the inner cavity 321 is configured to cooperate with the clamping groove 301. Further, the two free ends of the clamp 34 are configured to be bent inwards to form clamping members 341, and the two clamping members 341 are configured to jointly constitute a clamping structure, and the two clamping members 341 are clamped in the groove 322 under elastic force, and are configured to extend to cooperate with the clamping groove 301 on the rotating shaft 30.

[0137] The groove 322 that passes through the inner cavity 321 of the mounting seat 32 divides the mounting seat 32 into a first portion 323 and a second portion 324. Fig. 9As shown, the middle part of the clamp 34 is clamped on the first part 323 of the mounting seat 32 under the action of elasticity, that is, clamped in the groove 322. The two free ends of the clamp 34 are bent to form two clamping parts 341, and the ends of the two clamping parts 341 abut against the second part 324. During installation, the rotating shaft 30 is located in the inner cavity 321, and the part of the clamp 34 exposed from the inner cavity 321 cooperates with the clamping groove 301. Specifically, the two clamping parts 341 extend to cooperate with the clamping groove 301, so that they are clamped in the clamping groove 301 under the action of elastic force, so that the side brush 3 is installed on the rotating shaft 30.

[0138] Application scenario 1

[0139] In a household cleaning scenario, the cleaning device disclosed in the present invention may be a handheld floor scrubber. The handheld floor scrubber includes a floor brush assembly 200, and the floor brush assembly 200 includes a floor brush housing 1, a roller brush 2, and a side brush 3. The roller brush 2 is rotatably connected to the floor brush housing 1, and the axis of rotation of the roller brush 2 is parallel to the ground. A first arm 5 located on the driving side 11 and a second arm 6 located on the disassembly side 12 are provided on opposite sides of the floor brush housing 1. The thickness of the first arm 5 and the second arm 6 makes it impossible for the roller brush 2 to be zero-adhesive in actual cleaning scenarios. Both sides of the roller brush 2 will inevitably be a certain distance away from the side edges such as the wall and the furniture, resulting in a cleaning dead angle.

[0140] Since the first arm 5 is provided with a driving device 4 for driving the first cleaning unit to rotate, the side clearance of the roller brush 2 on the driving side 11 is larger than that on the disassembly side 12. For example, in this application scenario, the roller brush 2 on the driving side 11 has a clearance of about 10 mm from the side. In order to solve the problem that the roller brush 2 cannot be attached to the edge, at least a side brush 3 is provided on the driving side 11 of the floor brush assembly 200, and the side brush 3 can at least clean the cleaning dead corners of the driving side 11 of the roller brush 2.

[0141] The side brush 3 and the roller brush 2 can rotate in different directions, for example, the rotation axes of the side brush 3 and the roller brush 2 can be perpendicular to each other. This allows the roller brush 2 and the side brush 3 to be rotatably connected to the floor brush housing 1 in different connection methods, and to compensate for the cleaning blind spots caused by installation problems. The cleaning surface of the side brush 3 is constructed to extend from the cleaning surface of the roller brush 2 to the outside of the floor brush housing 1, so that the working surface located from the side of the roller brush 2 to the outside of the floor brush housing 1 can be cleaned by the side brush 3, thereby expanding the cleaning area and compensating for the cleaning blind spots caused by the installation requirements of the traditional roller brush 2. Therefore, when the cleaning device of the present disclosure is used for cleaning along a wall or other obstacles, the distance from the cleaning unit to the wall or obstacles can be reduced, and the blind spots that the roller brush 2 cannot clean can be cleaned by the side brush 3, thereby reducing the omission of dirt in the blind spots and improving the user experience.

[0142] Part of the bristles 31 of the side brush 3 extend to the bottom of the roller brush 2. The roller brush 2 at least contacts part of the side brush 3 on the working surface during the cleaning process, thereby driving the side brush 3 to rotate during the rotation process. The roller brush 2 can convert the horizontal force into the vertical rotation force of the side brush 3 through friction.

[0143] The side brush 3 drives the direction of the roller brush 2 to remove dirt on the working surface during the rotation process. The roller brush 2 rotates forward to clean the working surface in the working state. The side brush 3 rotates in the first direction under the action of the roller brush 2 to bring dirt on the working surface to the front side of the roller brush 2. The roller brush 2 can continue to move forward during the cleaning process to clean the dirt brought to the front side of the roller brush 2 by the side brush 3, so that the roller brush 2 can centrally clean the dirt.

[0144] Application scenario 2

[0145] The outer peripheral surface of the body of the side brush 3 is provided with a buffer portion protruding from the outside of the floor brush housing 1. The buffer portion has a certain elasticity to prevent scratches and buffer collisions. In the application scenario of wall cleaning, the buffer portion can be against the wall and drive the side brush 3 to rotate under the friction force of the wall.

[0146] When the user moves the handheld floor scrubber backwards from the wall-adjacent position, the buffer part drives the side brush 3 to rotate in the first direction under the friction force of the wall. At the same time, since the roller brush 2 always keeps forward rotation, the roller brush 2 will also drive the side brush 3 to rotate in the first direction by friction. At this time, the roller brush 2 and the buffer part provide the side brush 3 with the same direction of rotational force. The side brush 3 rotating in the first direction can bring the dirt on the working surface to the front side of the roller brush 2. During the cleaning process, the user will repeatedly drag it back and forth, so the roller brush 2 can move forward in the subsequent cleaning, thereby cleaning the dirt brought to the front side of the roller brush 2 by the side brush 3, and realizing the centralized cleaning of the dirt by the roller brush 2.

[0147] When the user moves the handheld floor scrubber forward in the wall-adjacent position, the buffer part drives the side brush 3 to rotate in the second direction under the friction force of the wall. At the same time, since the roller brush 2 always keeps rotating forward, the roller brush 2 can provide the side brush 3 with a rotational force to rotate in the first direction. At this time, the rotational forces provided by the roller brush 2 and the buffer part to the side brush 3 are in opposite directions. Since the force exerted by the wall on the side brush 3 is greater than the force exerted by the roller brush 2 on the side brush 3, the side brush 3 will rotate in the second direction to bring the dirt on the working surface to the rear side of the roller brush 2. During the cleaning process, the user will repeatedly drag the roller brush 2 back and forth, so the roller brush 2 can move backwards in the subsequent cleaning, thereby cleaning the dirt brought to the rear side of the roller brush 2 by the side brush 3; in addition, the dirt suction port arranged at the rear side of the roller brush 2 can suck out the dirt on the rear side of the roller brush 2, realizing the centralized cleaning of the dirt by the roller brush 2.

[0148] Application scenario three

[0149] In a household cleaning scenario, the cleaning device disclosed herein may be a handheld floor scrubber. The handheld floor scrubber includes a floor brush assembly 200, which includes a floor brush housing 1, a roller brush 2, and a side brush 3. The side brush 3 and the roller brush 2 can rotate in different directions, for example, the rotation axes of the side brush 3 and the roller brush 2 can be perpendicular to each other. This allows the roller brush 2 and the side brush 3 to be rotatably connected to the floor brush housing 1 in different connection methods, and to compensate for the cleaning blind spot problem caused by the installation problem.

[0150] The side brush 3 includes a mounting base 32 for detachably connecting to the floor brush housing 1, and three brush pieces 36 arranged on the lower end surface of the mounting base 32. In the cleaning state, the brush piece 36 is configured to be deformed in a direction away from the center of the body by an external force during the rotation of the body, so as to clean the working surface. Specifically, when the side brush 3 starts to rotate, the part of the brush piece 36 that contacts the working surface will rub against the working surface. Under the action of friction and extrusion of the working surface, and under the action of the centrifugal force of rotation, the soft brush piece 36 will be deformed, and the three brush pieces 36 can be deformed together in the outward direction, that is, open to the outside. In this way, the inner side surface S2 of the brush piece 36 fits the working surface, which increases the contact area between the brush piece 36 and the working surface, and improves the cleaning effect of the brush piece 36 on the working surface.

[0151] In the cleaning state, the brush piece 36 can be deformed to a position beyond the projection area of ​​the floor brush housing 1, and the brush piece 36 can extend into the cleaning blind area. Thus, the side brush 3 can be used to clean the working surface from the side of the roller brush 2 to the outside of the floor brush housing 1, thereby expanding the cleaning area and compensating for the cleaning blind area problem caused by the installation requirements of the traditional roller brush 2. Thus, when the cleaning device of the present disclosure is used for cleaning along a wall or other obstacles, the distance from the cleaning unit to the wall or obstacles can be reduced, and the side brush 3 can be used to clean the blind area that the roller brush 2 cannot clean, thereby reducing the omission of dirt in the blind area and improving the user experience.

[0152] A friction portion 37 is provided on the outer peripheral surface of the mounting seat 32 of the side brush 3, and the friction portion 37 can be made of a soft rubber material. When the roller brush 2 rotates, its side wall 22 will be in soft contact and friction with the friction portion 37, thereby driving the side brush 3 to rotate through the friction force between the side wall 22 and the friction portion 37. In this way, the rotation drive method of the side brush 3 is simplified to the greatest extent, and there is no need to set up other driving structures or transmission structures on the cleaning equipment. Instead, the side brush 3 can be driven to rotate directly through the existing roller brush 2 structure. The structure of this solution is simple and saves production costs. In addition, the friction portion 37 made of soft rubber prevents damage caused by hard friction, and can also generate a large friction force, which is conducive to driving the side brush 3 to rotate.

[0153] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the marketplace, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A cleaning device, characterized in that: It comprises a floor brush assembly (200), wherein the floor brush assembly (200) comprises: Floor brush housing (1); A first cleaning unit having a first cleaning member; the first cleaning unit is configured to be rotatably connected to the floor brush housing (1) along a first rotation axis, so that the first cleaning member cleans the working surface; The second cleaning unit has a second cleaning member; in a direction parallel to the first rotation axis, the second cleaning unit is located on at least one side of the first cleaning unit; in a cleaning state, the second cleaning unit is constructed to contact the first cleaning unit so that the friction between the first cleaning unit and the second cleaning unit drives the second cleaning unit to rotate; the cleaning state is a working state in which the first cleaning unit rotates to clean the working surface.

2. The cleaning device according to claim 1, characterized in that The first cleaning unit is a roller brush (2); the second cleaning unit comprises a body, the second cleaning member is arranged on the bottom end surface of the body, the body is configured to contact the side wall (22) of the roller brush (2), and in a cleaning state, the second cleaning unit rotates under the friction of the side wall (22) of the roller brush (2).

3. The cleaning device according to claim 2, characterized in that: The roller brush (2) comprises a roller and roller brush bristles (21), wherein the roller brush bristles (21) are wrapped around the roller; the side wall (22) is located on the roller, and the body is configured to be in contact with the roller.

4. The cleaning device according to claim 3, characterized in that: The second cleaning member is at least one brush sheet (36) arranged on the body; at least in the cleaning state, the brush sheet (36) is configured to be deformed in a direction away from the center of the body by an external force during the process of rotating with the body, so as to clean the working surface.

5. The cleaning device according to claim 4, characterized in that In the cleaning state, the second cleaning unit is configured to rotate along a first direction relative to the working surface with the second rotation axis as the axis; the opposite ends of the brush sheet (36) are marked as a first end (361) and a second end (362); in the first direction, the brush sheet (36) is configured to extend from its first end (361) to the second end (362) in a manner gradually moving away from the rotation center of the second cleaning unit.

6. The cleaning device according to claim 5, characterized in that The brush sheet (36) is constructed to be arc-shaped, and the brush sheet (36) and the body are connected by a line.

7. The cleaning device according to claim 5, characterized in that The side edge of the first end (361) of the brush sheet (36) is constructed to be gradually inclined from the position connected to the body to its end face, so that the length of the free end of the brush sheet (36) is smaller than the length of the connecting end of the brush sheet (36), the connecting end of the brush sheet (36) is the end of the brush sheet (36) connected to the body, and the free end of the brush sheet (36) is the end opposite to the connecting end.

8. The cleaning device according to claim 5, characterized in that An included angle α is formed between the inclined edge of the first end (361) of the brush sheet (36) and the end surface of the main body; an included angle β is formed between the side edge of the second end (362) of the brush sheet (36) and the end surface of the main body, wherein α<β≤90°.

9. The cleaning device according to claim 4, characterized in that: The body is located within the projection area of ​​the floor brush housing (1) on the working surface; in a cleaning state, the brush sheet (36) is constructed to deform outwardly to exceed the projection area of ​​the floor brush housing (1) on the working surface.

10. The cleaning device according to claim 4, characterized in that When the second cleaning unit does not rotate, the brush blade (36) is configured to be located within the edge of the body.

11. The cleaning device according to claim 4, characterized in that The angle at which the brush piece (36) extends from the side brush (3) body toward the working surface is between 90° and 110°.

12. The cleaning device according to claim 4, characterized in that The body is made of the same material as the brush sheet (36) and is constructed to be integrally formed with the brush sheet (36); or, a friction portion (37) is provided on the outer peripheral surface of the body, and in a cleaning state, the friction portion (37) is constructed to contact the side wall (22) of the roller brush (2).

13. The cleaning device according to claim 1, characterized in that Part of the second cleaning member is configured to extend below the first cleaning member, and the first cleaning member is configured to pre-press part of the second cleaning member onto the work surface at least in a cleaning state.

14. The cleaning device according to claim 1, characterized in that The second cleaning unit is configured to rotate relative to the working surface with a second rotation axis as an axis; the second rotation axis is perpendicular to the first rotation axis; the first cleaning unit is a roller brush (2), and the first rotation axis of the roller brush (2) is configured to be parallel to the working surface; the second cleaning unit is a side brush (3), and the second rotation axis of the side brush (3) is configured to be perpendicular to the working surface.

15. The cleaning device according to claim 1, characterized in that The second cleaning unit and the first cleaning unit are configured to be arranged in the direction of the first rotation axis.

16. The cleaning device according to claim 1, characterized in that A first support arm (5) located on a driving side (11) and a second support arm (6) located on a disassembly side (12) are arranged on opposite sides of a floor brush housing (1); a driving device (4) for driving the first cleaning unit to rotate is mounted on the first support arm (5); the first cleaning unit is configured to be detachably connected to the floor brush housing (1) via the second support arm (6); and the second cleaning unit is at least detachably connected to the first support arm (5).

17. The cleaning device according to claim 16, characterized in that A position at which the second cleaning unit contacts the first cleaning unit is configured to be no higher than the first rotation axis.

18. The cleaning device according to claim 16, characterized in that The second cleaning unit is configured to be connected to the first support arm (5) via a connection mechanism; the connection mechanism comprises a mounting seat (32) located on one of the second cleaning unit and the first support arm (5), and a rotating shaft (30) located on the other of the second cleaning unit and the first support arm (5); The rotating shaft (30) is provided with a clamping groove (301); the rotating shaft (30) extends into the inner cavity (321) of the mounting seat (32) and is configured to cooperate with the clamping groove (301) via a clamp (34).

19. The cleaning device according to claim 18, characterized in that Grooves (322) penetrating the inner cavity (321) are respectively provided on opposite sides of the mounting seat (32); the clamp (34) is configured to be clamped in the groove (322); and the portion of the clamp (34) exposed from the inner cavity (321) is configured to cooperate with the clamping groove (301).

20. The cleaning device according to claim 19, characterized in that The two free ends of the clamp (34) are respectively configured to be bent inwardly to form a clamping member (341), and the two clamping members (341) are configured to jointly constitute a clamping structure; the two clamping members (341) are clamped in the groove (322) under elastic force, and are configured to extend to cooperate with the clamping groove (301) on the rotating shaft (30).

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