Rolling brush assembly and cleaning device

Abstract

The utility model discloses a rolling brush assembly and a cleaning device.The rolling brush assembly comprises a connecting shaft, a first rolling brush part and a second rolling brush part, the first rolling brush part and the second rolling brush part are both arranged on the connecting shaft, the first rolling brush part is connected with the connecting shaft, the second rolling brush part is detachably connected with the connecting shaft, first bristles are arranged on the peripheral side of the first rolling brush part, and second bristles are arranged on the peripheral side of the second rolling brush part. The first bristles are spirally arranged in the circumferential direction of the first rolling brush part; the second rolling brush parts and the first rolling brush parts are arranged at intervals in the axial direction of the connecting shaft, the extending direction of the axis of each second rolling brush part coincides with the extending direction of the axis of the corresponding first rolling brush part, and second bristles are arranged on the circumferential side of each second rolling brush part and spirally arranged in the circumferential direction of the corresponding second rolling brush part. According to the embodiment of the invention, while the integrity of the rolling brush assembly is ensured, hair in the rolling brush assembly can be cleaned more conveniently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning devices, in particular to a rolling brush assembly and a cleaning device. BACKGROUND

[0002] Cleaning devices gradually develop from primary intelligence to a higher degree of intelligence, gradually replacing manual cleaning, and will become an indispensable cleaning aid for many families, such as cleaning robots, handheld vacuum cleaners, etc. In the related art, many cleaning devices are provided with a rolling brush. When the cleaning device is cleaning, hair often gets into the rolling brush and is difficult to clean. Over time, the hair that is difficult to clean will accumulate and affect the service life of the rolling brush. CONTENT OF THE UTILITY MODEL

[0003] The rolling brush assembly and the cleaning device provided by the embodiments of the present application can effectively improve the problem that hair is difficult to clean when winding around the rolling brush.

[0004] In a first aspect, the embodiments of the present application provide a rolling brush assembly, comprising:

[0005] a connecting shaft;

[0006] a first rolling brush part, arranged on the connecting shaft and connected with the connecting shaft, a first bristle being arranged on a circumferential side of the first rolling brush part, the first bristle being arranged in a spiral shape around a circumferential direction of the first rolling brush part;

[0007] a second rolling brush part, arranged on the connecting shaft and detachably connected with the connecting shaft, the second rolling brush part being arranged in a spaced manner with the first rolling brush part along an axial direction of the connecting shaft, and an extension direction of an axial center line of the second rolling brush part coincides with an extension direction of an axial center line of the first rolling brush part, a second bristle being arranged on a circumferential side of the second rolling brush part, the second bristle being arranged in a spiral shape around a circumferential direction of the second rolling brush part.

[0008] In a second aspect, the embodiments of the present application further provide a cleaning device, comprising a shell, a motor and a rolling brush assembly as described in any of the above embodiments, the motor and the rolling brush assembly are arranged in the shell, the motor is connected with the first rolling brush part, and the motor is used to drive the rolling brush assembly to rotate around the circumferential direction of the connecting shaft.

[0009] Based on the rolling brush assembly and the cleaning device in the embodiments of the present application, the second rolling brush part is detachably connected with the connecting shaft, so that the rolling brush assembly can work as a whole when working, so as to facilitate the synchronous work of the two rolling brush parts. Meanwhile, the rolling brush assembly can be divided into the first rolling brush part and the second rolling brush part when cleaning, so that the rolling brush part is shortened in length (length along the axial direction) and becomes better for cleaning, and meanwhile, the hair on the connecting shaft can be easily taken out. In addition, the spiral brush structure is arranged on the rolling brush parts on both sides, so that most of the hair rolled in can be gathered from the outside of the rolling brush assembly to the position of the connecting shaft in the middle, so that the embodiments of the present application can ensure the integrity of the rolling brush assembly and facilitate the hair cleaning in the rolling brush assembly. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0011] Figure 1 It is a structure schematic view of the rolling brush assembly in an embodiment of the present application.

[0012] Figure 2 It is a structure schematic view of the first rolling brush part and the connecting shaft in an embodiment of the present application.

[0013] Figure 3 It is a structure schematic view of the second rolling brush part in an embodiment of the present application.

[0014] Figure 4 It is a cross-sectional structure schematic view of the rolling brush assembly in an embodiment of the present application.

[0015] Figure 5 It is a structure schematic view of the cleaning device in an embodiment of the present application.

[0016] Figure 6 It is a structure schematic view of the cleaning device in another embodiment of the present application.

[0017] Reference signs:

[0018] 1, rolling brush assembly;

[0019] 10, first rolling brush part; 11, first brush; 12, first brush piece;

[0020] 20, second rolling brush part; 21, second brush; 22, plug-in slot; 23, first magnetic attraction part; 24, mounting part; 25, second brush piece;

[0021] 30, connecting shaft; 31, plug-in part; 32, second magnetic attraction member; 33, first tooth structure;

[0022] 40, shell;

[0023] 2, cleaning device;

[0024] 201, shell; 202, motor; 203, dust suction assembly; 2031, suction port. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0026] In the related art, many cleaning devices are provided with a roller brush. When the cleaning device is sweeping, hair often gets into the roller brush and is difficult to clean. Over time, the hair that is difficult to clean accumulates and affects the service life of the roller brush.

[0027] In view of the above situation, in a first aspect, referring to Figures 1-3 The present application provides a roller brush assembly 1, which comprises a connecting shaft 30, a first roller brush part 10 and a second roller brush part 20. The connecting shaft 30 can be used to connect the first roller brush part 10 and the second roller brush part 20 together, so that the first roller brush part 10 and the second roller brush part 20 can perform cleaning work synchronously.

[0028] The first roller brush part 10 and the second roller brush part 20 are both arranged on the connecting shaft 30. The first roller brush part 10 is connected to the connecting shaft 30, and the second roller brush part 20 is detachably connected to the connecting shaft 30. The second roller brush part 20 and the first roller brush part 10 are arranged in an axial direction of the connecting shaft 30, and the extension direction of the axis of the second roller brush part 20 coincides with the extension direction of the axis of the first roller brush part 10.

[0029] Specifically, the connecting shaft 30 can connect the shaft center line of the first rolling brush part 10 and the shaft center line of the second rolling brush part 20 on the same straight line, and the connecting shaft 30 and the second rolling brush part 20 can be detachable, so as to split the rolling brush assembly 1 into two independent parts, i.e., the first rolling brush part 10 and the second rolling brush part 20, to make the rolling brush assembly 1 better clean. The first rolling brush part 10 can be connected with an external motor 202, and the first rolling brush part 10 rotates under the driving of the external motor 202, so that the first rolling brush part 10 can drive the second rolling brush part 20 to rotate synchronously through the connecting shaft 30. Therefore, the first rolling brush part 10 and the connecting shaft 30 can be fixedly connected to improve the connection stability between the first rolling brush part 10 and the connecting shaft 30. Of course, the first rolling brush part 10 and the connecting shaft 30 can also be detachably connected.

[0030] The first rolling brush part 10 is provided with first bristles 11 on the circumferential side, and the first bristles 11 are arranged in a spiral shape around the circumference of the first rolling brush part 10. The second rolling brush part 20 is provided with second bristles 21 on the circumferential side, and the second bristles 21 are arranged in a spiral shape around the circumference of the second rolling brush part 20. It can be understood that the first rolling brush part 10 and the second rolling brush part 20 have a gap therebetween. When the rolling brush assembly 1 is rolled into hair during cleaning, due to the spiral bristle structure on the first rolling brush part 10 and the second rolling brush part 20, most of the rolled-in hair can be gathered from the outside of the rolling brush assembly 1 to the gap position between the first rolling brush part 10 and the second rolling brush part 20. Most of the hair will converge on the connecting shaft 30 in the middle. When the user cleans it later, the second rolling brush part 20 can be detached from the connecting shaft 30, so as to clean the hair on the rolling brush assembly 1 more thoroughly. The first bristles 11 can be provided in multiple rows, and adjacent two rows of first bristles 11 are arranged side by side and spaced apart around the circumference of the first rolling brush part 10.

[0031] It should be noted that the second rolling brush part 20 and the connecting shaft 30 are detachably connected in the embodiment of the present application, so that the rolling brush assembly 1 can work as a whole during work, to facilitate the synchronous work of the two rolling brush parts. Meanwhile, the rolling brush assembly 1 can also be split into two independent parts, i.e., the first rolling brush part 10 and the second rolling brush part 20, to make the rolling brush part shorter in length (length along the axis direction) and better clean. Meanwhile, the hair on the connecting shaft 30 can be easily taken out, thereby facilitating the cleaning operation of the rolling brush assembly 1. In addition, the spiral bristle structure is arranged on the rolling brush parts on both sides, so that most of the rolled-in hair can be gathered from the outside of the rolling brush assembly 1 to the position of the connecting shaft 30 in the middle. Thus, the embodiment of the present application can not only ensure the integrity of the rolling brush assembly 1, but also improve the problem that the hair is difficult to clean when it is wound on the rolling brush part, so that the hair cleaning of the rolling brush assembly 1 is more convenient, the hair accumulation and winding on the rolling brush assembly 1 are prevented to affect the use effect, and the service life of the rolling brush assembly 1 is prolonged.

[0032] It should be further noted that the brush roller assembly 1 further comprises a housing 40 (as shown) having a half-enclosed accommodating cavity, the connecting shaft 30, the first brush roller part 10 and the second brush roller part 20 are all arranged in the accommodating cavity, and a part of the first brush roller part 10 and the second brush roller part 20 extends out of the accommodating cavity, the first brush roller part 10 and the second brush roller part 20 exposed outside the accommodating cavity are used for cleaning the ground, and the housing 40 is arranged to integrate the connecting shaft 30, the first brush roller part 10 and the second brush roller part 20, so as to facilitate the installation of the brush roller assembly 1 as a whole in the cleaning device 2. Figure 5

[0033] In some embodiments, the housing 40 is provided with a mounting groove on the side close to the second brush roller part 20, when the second brush roller part 20 is mounted in the housing 40, the mounting piece 24 can extend into the mounting groove to provide support for the second brush roller part 20, and the mounting piece 24 can rotate in the mounting groove, and the second brush roller part 20 is elastic as a whole, when cleaning the hair on the brush roller assembly 1, the second brush roller part 20 can be first disassembled from the connecting shaft 30, at this time the second brush roller part 20 deforms to a certain extent, and then the mounting piece 24 is taken out of the mounting groove.

[0034] Alternatively, in some other embodiments, the housing 40 is provided with a detachable baffle on the side close to the second brush roller part 20, when the second brush roller part 20 is mounted in the housing 40, the baffle is in contact with the mounting piece 24 to provide support for the second brush roller part 20, and the mounting piece 24 can rotate relative to the baffle, when cleaning the hair on the brush roller assembly 1, the baffle can be first disassembled from the housing 40, at this time there is no blockage between the housing 40 and the second brush roller part 20, and then the second brush roller part 20 can be disassembled from the connecting shaft 30.

[0035] In some embodiments of the present application, as shown in Figure 1 ​As shown, the first roller brush part 10 and the second roller brush part 20 are respectively located at opposite ends of the connecting shaft 30, and in the extension direction of the connecting shaft 30, for example, in the extension direction of the axis of the first roller brush part 10 to the axis of the second roller brush part 20, the spiral direction of the first bristles 11 is opposite to the spiral direction of the second bristles 21, wherein the spiral is divided into left-handed and right-handed, and from the spiral center along the axis of the connecting shaft 30, if the spiral is counterclockwise from near to far, it is left-handed, and vice versa, the spiral direction of one of the first bristles 11 and the second bristles 21 is left-handed, and the spiral direction of the other is right-handed, so that when the hair is rolled into the roller brush part, the hair can be gathered from the outside of the first roller brush part 10 and the second roller brush part 20 to the middle interval position, and when the user cleans up later, the second roller brush part 20 can be detached from the connecting shaft 30 to facilitate more thorough cleaning of the hair at the middle interval position, thereby preventing long-term accumulation of hair on the roller brush assembly 1 affecting the service life of the roller brush part.

[0036] In some embodiments, as shown, Figure 1 The first roller brush part 10 and the second roller brush part 20 have a gap therebetween, and the gap therebetween is connected by the connecting shaft 30, and the orthographic projection of the first bristles 11 on the connecting shaft 30 partially overlaps the orthographic projection of the second bristles 21 on the connecting shaft 30, that is, although the first roller brush part 10 and the second roller brush part 20 have a gap therebetween, the first bristles 11 and the second bristles 21 will both extend to the middle interval position, and when the roller brush assembly 1 is cleaning, the first bristles 11 and the second bristles 21 can not only sweep to the position of the roller brush part, but also to the middle interval position between the two roller brush parts, thereby preventing the middle from being missed when the roller brush assembly 1 is cleaning.

[0037] As shown, Figures 2-3 In some embodiments, the first roller brush part 10 is further provided with a first brush sheet 12 on the circumferential side thereof, the first brush sheet 12 is arranged in a spiral shape around the circumference of the first roller brush part 10, and the first brush sheet 12 and the first bristles 11 are arranged side by side and spaced apart around the circumference of the first roller brush part 10; the second roller brush part 20 is further provided with a second brush sheet 25 on the circumferential side thereof, the second brush sheet 25 is arranged in a spiral shape around the circumference of the second roller brush part 20, and the second brush sheet 25 and the second bristles 21 are arranged side by side and spaced apart around the circumference of the second roller brush part 20.

[0038] It can be understood that the first brush sheet 12 and the second brush sheet 25 contact the ground through a planar structure, which is more convenient for cleaning garbage on the ground, and the first bristles 11 and the second bristles 21 contact the ground through multiple clusters of bristles, which further clean hair and other debris on the ground, so that the first roller brush part 10 and the second roller brush part 20 can better complete the cleaning work and improve the cleaning efficiency of the roller brush assembly.

[0039] Further, as shown in Figures 2-3 The first brush pieces 12 are provided in multiple rows, and adjacent two rows of the first brush pieces 12 are arranged in a diagonal parallel manner. The second brush pieces 25 are provided in multiple rows, and adjacent two rows of the second brush pieces 25 are arranged in a diagonal parallel manner.

[0040] It can be understood that the brush pieces are arranged in a spiral manner on the roller brush part, and therefore, adjacent two rows of the brush pieces are arranged in a diagonal parallel manner, thereby ensuring uniform distribution of the contact time of the brush pieces with the ground and shortening the contact time interval of the brush pieces with the ground, so as to improve the cleaning efficiency of the roller brush part. In some embodiments, the first bristles 11 and the second bristles 21 are also provided in multiple rows, and adjacent two rows of the first bristles 11 are arranged in a diagonal parallel manner on the first roller brush part 10. The first bristles 11 and the first brush pieces 12 can be alternately and spacedly arranged. Similarly, adjacent two rows of the second bristles 21 are also arranged in a diagonal parallel manner, and the second bristles 21 and the second brush pieces 25 can also be alternately and spacedly arranged. Therefore, when the roller brush assembly 1 cleans the ground, the contact time interval of the bristles and the brush pieces with the ground is greatly shortened, the cleaning of the garbage and hair at each position on the ground is more thorough, and the cleaning efficiency of the roller brush assembly 1 is further improved.

[0041] In some embodiments of the present application, the spacing distance between the first roller brush part 10 and the second roller brush part 20 is d1, and d1 satisfies 3mm≤d1≤18mm, thereby facilitating the provision of a containing position for the hair gathered in the middle of the roller brush assembly 1.

[0042] In some embodiments of the present application, the diameter of the connecting shaft 30 is R, and R satisfies 3mm≤R≤20mm, so as to ensure that the connecting shaft 30 has sufficient strength to connect the first roller brush part 10 and the second roller brush part 20, and can drive the second roller brush part 20 to rotate.

[0043] Please refer to Figures 2-4 In some embodiments of the present application, the second end of the connecting shaft 30 and the second roller brush part 20 can be detachably connected through clamping and / or magnetic adsorption.

[0044] Alternatively, the second end of the connecting shaft 30 and the second roller brush part 20 can be separately clamped and fixed. A groove for clamping is arranged on the second roller brush part 20, and the connecting shaft 30 is clamped and fixed with the groove. Alternatively, the second end of the connecting shaft 30 and the second roller brush part 20 can be separately fixed through magnetic adsorption. One of an iron sheet and a magnet is arranged on the end of the second end of the connecting shaft 30, and the other one of the iron sheet and the magnet is arranged on the second roller brush part 20, and the iron sheet and the magnet are magnetically adsorbed.

[0045] Further, as shown in Figures 2-3As shown, the second rolling brush part 20 is provided with a plug-in slot 22 at the end of the first rolling brush part 10, and the second end of the connecting shaft 30 is provided with a plug-in part 31 which is inserted into the plug-in slot 22 so as to connect the connecting shaft 30 with the second rolling brush part 20.

[0046] Specifically, the plug-in part 31 is provided with a first tooth structure 33, and the slot wall of the plug-in slot 22 is provided with a second tooth structure (not shown in the figure) matched with the first tooth structure 33. When the plug-in part 31 is inserted into the plug-in slot 22, the first tooth structure 33 is engaged with the second tooth structure correspondingly, so as to improve the connection stability and tightness between the second rolling brush part 20 and the connecting shaft 30, so that the connecting shaft 30 can drive the second rolling brush part 20 to rotate more stably, and prevent relative rotation between the connecting shaft 30 and the second rolling brush part 20.

[0047] Alternatively, in other embodiments, the end of the plug-in part 31 can be provided with a special-shaped protrusion, such as a cross-shaped protrusion, a triangular protrusion, a square protrusion, etc., and the inside of the plug-in slot 22 has a special-shaped slot matched with the shape of the special-shaped protrusion. When the plug-in part 31 is inserted into the plug-in slot 22, the special-shaped protrusion is matched with the special-shaped slot correspondingly, so that the connecting shaft 30 can drive the second rolling brush part 20 to rotate more stably, and prevent relative rotation between the connecting shaft 30 and the second rolling brush part 20.

[0048] Further, in some embodiments of the present application, as shown in Figure 4 The plug-in slot 22 is provided with a first magnetic attraction piece 23, and one side of the plug-in part 31 is provided with a second magnetic attraction piece 32. When the plug-in part 31 is inserted into the plug-in slot 22, the first magnetic attraction piece 23 is positionally corresponding to the second magnetic attraction piece 32, and a magnetic attraction force is generated between the first magnetic attraction piece 23 and the second magnetic attraction piece 32, thereby further improving the connection stability between the connecting shaft 30 and the second rolling brush part 20.

[0049] Specifically, the position of the second magnetic attraction piece 32 can be on one side of the end of the plug-in part 31, so that not only the connecting shaft 30 and the second rolling brush part 20 can be relatively fixed, but also relative rotation between the connecting shaft 30 and the second rolling brush part 20 can be reduced when the second rolling brush part 20 rotates. The first magnetic attraction piece 23 is one of an iron sheet and a magnet, and the second magnetic attraction piece 32 is the other of the iron sheet and the magnet.

[0050] In the second aspect, please refer to Figures 5-6The embodiment of the present application also provides a cleaning device 2, comprising a shell 201, a motor 202 and the rolling brush assembly 1 as described in any of the above embodiments, the motor 202 and the rolling brush assembly 1 are arranged in the shell 201, the motor 202 is connected with the first rolling brush part 10, the motor 202 provides a rotating torque to drive the first rolling brush part 10 to rotate around the circumference of the connecting shaft 30, and the first rolling brush part 10 can drive the second rolling brush part 20 to rotate around the circumference of the connecting shaft 30 through the connecting shaft 30, so that the motor 202 drives the two rolling brush parts on the rolling brush assembly 1 to rotate synchronously.

[0051] In some embodiments of the present application, referring to Figure 6 The cleaning device 2 further comprises a dust suction assembly 203, the dust suction assembly 203 has a dust suction cavity and a suction port 2031 in communication with the dust suction cavity, and the suction port 2031 is arranged corresponding to the interval between the first rolling brush part 10 and the second rolling brush part 20.

[0052] Specifically, the dust suction assembly 203 comprises a fan for air suction, the air inlet of the fan is in communication with the suction port 2031, and the air outlet of the fan is in communication with the dust suction cavity, when the rolling brush assembly 1 sucks in hair during cleaning, the hair is gathered at the interval position between the first rolling brush part 10 and the second rolling brush part 20, the fan is adsorbed through the suction of the air inlet, and the hair gathered at the interval position is collected into the dust suction cavity, so as to facilitate subsequent cleaning.

[0053] In the drawings of the embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application, and for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0054] The above is only a preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A roller brush assembly, characterized in that, include: Connecting shaft; A first roller brush portion is disposed on and connected to the connecting shaft. A first brush bristle is disposed on the periphery of the first roller brush portion, and the first brush bristle is arranged in a spiral around the periphery of the first roller brush portion. The second roller brush is disposed on the connecting shaft and detachably connected to the connecting shaft. The second roller brush and the first roller brush are arranged at intervals along the axial direction of the connecting shaft, and the extension direction of the axis of the second roller brush coincides with the extension direction of the axis of the first roller brush. The second roller brush is provided with second bristles on its periphery, and the second bristles are arranged in a spiral around the circumference of the second roller brush.

2. The roller brush assembly according to claim 1, characterized in that, The orthographic projection of the first bristle on the connecting shaft partially overlaps with the orthographic projection of the second bristle on the connecting shaft.

3. The roller brush assembly according to claim 1, characterized in that, Along the extending direction of the connecting shaft, the spiral direction of the first bristles is opposite to that of the second bristles.

4. The roller brush assembly according to claim 1, characterized in that, A first brush blade is also provided on the periphery of the first roller brush portion. The first brush blade is arranged in a spiral around the circumference of the first roller brush portion. The first brush blade and the first bristles are arranged side by side and spaced apart around the circumference of the first roller brush portion. A second brush blade is also provided on the periphery of the second roller brush portion. The second brush blade is arranged in a spiral around the circumference of the second roller brush portion. The second brush blade and the second brush bristles are arranged side by side and spaced apart around the circumference of the second roller brush portion.

5. The roller brush assembly according to claim 1, characterized in that, The connection between the second end of the connecting shaft and the second roller brush is by snap-fit ​​and / or magnetic adsorption.

6. The roller brush assembly according to claim 5, characterized in that, The second roller brush portion has an insertion groove at its end facing the first roller brush portion, and the second end of the connecting shaft has an insertion portion. The insertion portion is inserted into the insertion groove so that the connecting shaft is engaged with the second roller brush portion.

7. The roller brush assembly according to claim 6, characterized in that, The plug part is provided with a first tooth structure, and the groove wall of the plug groove is provided with a second tooth structure that matches the first tooth structure. The plug part is inserted into the plug groove, and the first tooth structure and the second tooth structure mesh.

8. The roller brush assembly according to claim 6, characterized in that, The insertion slot is provided with a first magnetic attractor, and one side of the insertion part is provided with a second magnetic attractor. When the insertion part is inserted into the insertion slot, the first magnetic attractor and the second magnetic attractor are positioned correspondingly, and a magnetic attraction force is generated between the first magnetic attractor and the second magnetic attractor.

9. The roller brush assembly according to claim 1, characterized in that, The distance between the first roller brush and the second roller brush is d1, where d1 satisfies 3mm≤d1≤18mm.

10. The roller brush assembly according to claim 1, characterized in that, The diameter of the connecting shaft is R, and R satisfies 3mm≤R≤20mm.

11. A cleaning device, characterized in that, The device includes a housing, a motor, and a roller brush assembly as described in any one of claims 1 to 10. The motor and the roller brush assembly are both disposed in the housing. The motor is connected to the first roller brush portion and is used to drive the roller brush assembly to rotate circumferentially about the connecting shaft.

12. The cleaning device according to claim 11, characterized in that, The cleaning device further includes a vacuuming assembly, which has a vacuuming chamber and a suction port communicating with the vacuuming chamber. The suction port is spaced at intervals corresponding to the first roller brush and the second roller brush.

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