Automatic Cleaning Device

Abstract

The present disclosure provides an automatic cleaning device, including a cleaning brush, at least one end of the cleaning brush including an assembly structure, the cleaning brush being assembled in a predetermined position on the automatic cleaning device, the assembly structure having N first repeating units along a circumferential direction, N being a positive integer and N being 2 or greater.

Description

[Technical Field]

[0001] (Related Applications) This disclosure claims priority to Chinese Patent Application Nos. 202211734557.9, 202211739051.7, 202211739794.4, 202211740301.9 and 202211736856.6, filed on December 30, 2022, respectively, the entire contents of which are incorporated herein by reference as part of this disclosure.

[0002] FIELD OF THE DISCLOSURE The present disclosure relates to the field of cleaning devices, and more particularly to automatic cleaning devices. [Background technology]

[0003] With the continuous development of technology, automatic cleaning devices such as sweeping robots and sweeping and mopping machines have become widely used in ordinary homes. To achieve the sweeping function, the cleaning robot with sweeping function is equipped with a cleaning brush to wind up different sizes of debris on the floor surface and send it to a debris collection box by suction.

[0004] The structure and installation method of the cleaning brush are one of the important factors that determine the cleaning effect of an automatic cleaning device. However, the existing single brush structure cannot improve the cleaning effect of the automatic cleaning device and cannot perform targeted cleaning on different cleaning surfaces, which limits the wide application of the automatic cleaning device. Summary of the Invention

[0005] An embodiment of the present disclosure provides an automatic cleaning device, the automatic cleaning device including a cleaning brush, and an assembly structure at at least one end of the cleaning brush for assembling the cleaning brush in a predetermined position on the automatic cleaning device, the assembly structure having N first repeating units along a circumferential direction, where N is a positive integer and N is 2 or greater.

[0006] In some embodiments, the cleaning brush further includes an end member, one side of which is provided with the assembly structure.

[0007] In some embodiments, the cleaning brush comprises a plurality of sets of brush members, and the number N of first repeating units constitutes a submultiple of the number of sets of brush members in the plurality of sets.

[0008] In some embodiments, the N first repeating units form a regular polygon or an irregular polygon.

[0009] In some embodiments, the polygon is an N-sided polygon formed by a combination of straight lines and / or curves.

[0010] In some embodiments, the regular polygon is a plum-shaped N-gon.

[0011] In some embodiments, the end member further includes a guide rod, the guide rod being located opposite the assembly structure, the guide rod having a guide portion.

[0012] In some embodiments, the guide portion has N second repeating units along the circumferential direction.

[0013] In some embodiments, the end member further comprises a blocking structure.

[0014] In some embodiments, the blocking structure includes a first wall, a recess, and a second wall from the outside to the inside along the axial direction of the cleaning brush, and the thickness of the first wall is greater than the thickness of the second wall.

[0015] In some embodiments, the cleaning brush includes a first roller brush and a second roller brush, and the assembly structure of the first roller brush and the second roller brush has N first repeating units along the circumferential direction, where the shape of the first repeating unit in the first roller brush is different from that of the second roller brush.

[0016] In some embodiments, the N first repeating units in the first roller brush form a regular polygon, and the N first repeating units in the second roller brush form a plum shape.

[0017] In some embodiments, N is 5.

[0018] Compared with the prior art, the above technical solution has the following beneficial technical effects:

[0019] At least one end of the cleaning brush includes an assembly structure, and the cleaning brush is assembled in a predetermined position on the automatic cleaning device. The assembly structure has N first repeating units along the circumferential direction, where N is a positive integer and is 2 or greater, thereby improving installation accuracy and convenience.

[0020] The accompanying drawings herein are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings in the following description are merely some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these accompanying drawings without creative work. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a schematic diagram of the three-dimensional structure of an automatic cleaning device provided by some embodiments of the present disclosure. [Figure 2] 1 is a schematic bottom view of an automatic cleaning device provided by some embodiments of the present disclosure. FIG. [Figure 3] 1 is a schematic diagram of a cleaning module structure provided by some embodiments of the present disclosure. FIG. [Figure 4] 1 is a cross-sectional schematic view of a cleaning module provided by some embodiments of the present disclosure. FIG. [Figure 5] 1 is a schematic longitudinal cross-sectional view of a first roller brush provided by some embodiments of the present disclosure. FIG. [Figure 6]1 is a schematic cross-sectional view of a first roller brush provided by some embodiments of the present disclosure. FIG. [Figure 6-1] 1 is a schematic transverse cross-sectional view of a second roller brush provided in accordance with some embodiments of the present disclosure. FIG. [Figure 6-2] FIG. 10 is a schematic transverse cross-sectional view of a second roller brush provided according to some other embodiments of the present disclosure. [Figure 7] 1 is an exploded view of the three-dimensional structure of an example cleaning brush provided by the present disclosure. FIG. [Figure 8] 8 is a three-dimensional structural view of an example of a first end member of the cleaning brush of FIG. 7. FIG. [Figure 9] 8 is an exploded view of the local structure of one angle of the first end member and the shaft of the cleaning brush of FIG. 7; FIG. [Figure 10] 8 is an exploded view of the local structure of the first end member and the shaft of the cleaning brush of FIG. 7 at another angle. [Figure 11] 8 is an exploded view of the three-dimensional structure of the cleaning brush of FIG. 7 at another angle. [Figure 12] 8 is an exploded view of the local structure of the second end member and one angle of the shaft of the cleaning brush of FIG. 7; FIG. [Figure 13] 1 is an exploded view of the three-dimensional structure of an example cleaning brush provided by the present disclosure. FIG. [Figure 14] FIG. 14 is a schematic cross-sectional view of the cleaning brush of FIG. 13. [Figure 15] 14 is a three-dimensional structural view of an example of an end member of the cleaning brush of FIG. 13. FIG. [Figure 16] 14 is a schematic diagram of a three-dimensional structure of an example of a fitting member of the shaft rod of FIG. 13. FIG. [Figure 17] 14 is a schematic three-dimensional structural view of an example of a guiding and fitting structure of the end member and the fitting member of the shaft rod in FIG. 13. FIG. [Figure 18] FIG. 18 is an exploded view of the guide and fitting structure of FIG. [Figure 19] FIG. 10 is an exploded schematic view of the three-dimensional structure of another example of a cleaning brush provided by the present disclosure. [Figure 20] FIG. 20 is an exploded view of the local structure of one angle of the cleaning brush of FIG. 19. [Figure 21]20 is an exploded view of the local structure of the cleaning brush of FIG. 19 at another angle. [Figure 22] 1 is a structural schematic diagram of a roller brush provided by some embodiments of the present disclosure. [Figure 23] FIG. 3 is a schematic cross-sectional view of the roller brush shown in FIG. 2. [Figure 24] 1 is a schematic diagram of an enlarged local structure of a roller brush provided by some embodiments of the present disclosure. [Figure 25] 1 is a schematic diagram of an enlarged local structure of a roller brush provided by some embodiments of the present disclosure. [Figure 26] 1 is a schematic diagram of an enlarged local structure of a roller brush provided by some embodiments of the present disclosure. [Figure 27] 1 is a structural schematic diagram of a cleaning module provided by some embodiments of the present disclosure from another viewing angle; FIG. [Figure 28] 1 is a schematic cross-sectional view of a cleaning module provided by some embodiments of the present disclosure. FIG. [Figure 29] 2 is a structural schematic diagram of a first roller brush and a second roller brush provided by some embodiments of the present disclosure. FIG. [Figure 30] 2 is a structural schematic diagram of a first roller brush and a second roller brush provided by some embodiments of the present disclosure. FIG. [Figure 31] 1 is a structural schematic diagram of a first roller brush provided by some embodiments of the present disclosure. FIG. [Figure 32] 2 is a structural schematic diagram of a first roller brush and a second roller brush provided by some embodiments of the present disclosure. FIG. [Figure 33] FIG. 2 is an exploded structural schematic diagram of a first roller brush provided by some embodiments of the present disclosure. [Figure 34] FIG. 2 is an exploded structural schematic diagram of a first roller brush provided by some embodiments of the present disclosure. [Figure 35] 2 is a schematic cross-sectional view of a first roller brush provided by some embodiments of the present disclosure. FIG. [Figure 36]FIG. 2 is a schematic exploded structural view of a second roller brush provided by some embodiments of the present disclosure. [Figure 37] FIG. 2 is a schematic exploded structural view of a second roller brush provided by some embodiments of the present disclosure. [Figure 38] FIG. 2 is a schematic cross-sectional view of a second roller brush provided by some embodiments of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be described in more detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present disclosure, but not all of the embodiments. Based on the embodiments of the present disclosure, other embodiments obtained by those skilled in the art without any creative work are all included in the protection scope of the present disclosure.

[0023] It should be noted that the terms "comprises," "has," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or device comprising a set of elements not only includes those elements, but also other elements explicitly listed or inherent in those products or devices. Unless further limited, an element defined with the phrase "comprises" does not exclude the presence of other identical elements in a product or device that includes said element.

[0024] In the related art, there is a double roller brush model in an automatic cleaning device, such as a sweeping robot, in which the two roller brushes are usually soft brush structures that are easily deformed. The roller brush structure of the double soft brush can be greatly deformed and has good permeability for large particles of dust, but the manufacturing process for the soft roller brush is complicated and costly, and it is easily deformed after long-term use. Therefore, how to rationally design the structure of the two roller brushes has become a technical problem that needs to be solved as soon as possible.

[0025] An embodiment of the present disclosure provides an automatic cleaning device, comprising: a moving platform configured to move on an operating surface; and a cleaning module assembled to the moving platform and configured to clean the operating surface, the cleaning module including a first roller brush and a second roller brush, the first roller brush being arranged along a first direction perpendicular to a front-to-rear axis of the moving platform, the first roller brush including a first brush member, a first axial rod, and a first filler, the first filler being fitted into the first axial rod so that the first filler and the first axial rod are coaxial, the second roller brush being assembled to the cleaning module along a direction parallel to the first roller brush, the second roller brush including a second brush member and a second axial member, the first filler being an elastic member and the second axial member being a rigid member, the first filler having a first inner diameter and a first outer diameter such that the first filler has a predetermined thickness.

[0026] The automatic cleaning device provided by the embodiments of the present disclosure has a double roller brush structure of a first roller brush and a second roller brush, with the first filler in the first roller brush being an elastic member and the second shaft member being a rigid member, so that the automatic cleaning device can effectively clean the floor surface with two types of roller brushes, soft and hard, improve the passage of dirt between the first roller brush and the second roller brush, and rationally set the amount of interference between the two types of roller brushes and the floor surface, thereby improving the overall cleaning efficiency of the floor surface.

[0027] In the embodiment of the present disclosure, one of the roller brushes is set as a hard brush, which is composed of an internal hard core and an external dust cover, has a simple structure, high dimensional accuracy, and can easily control the amount of interference with the floor surface during the cleaning process, ensuring cleaning effect and cleaning noise within an appropriate range, and because the hard brush does not have a sponge, it is less likely to deform even after long-term use and has a long service life. The combination of soft and hard brushes ensures sufficient passage of large particles of dust.

[0028] Below, optional embodiments of the present application will be described in detail in conjunction with the accompanying drawings.

[0029] 1 and 2 are schematic structural diagrams of an automatic cleaning device according to an exemplary embodiment. As shown in FIGS. 1 and 2, the automatic cleaning device may be a vacuum cleaning robot, a mopping / brushing robot, a window climbing robot, etc., and the automatic cleaning device includes a moving platform 1000, a sensing system 2000, a control system (not shown), a driving system 3000, an energy system (not shown), a man-machine interactive system 4000 and a cleaning module 5000.

[0030] The mobile platform 1000 is configured to automatically move in a target direction on an operating surface. The operating surface may be a surface to be cleaned by an automatic cleaning device. In some embodiments, the automatic cleaning device may be a mopping robot, where the automatic cleaning device works on a floor surface, the floor surface being the operating surface; a window cleaning robot, where the automatic cleaning device works on the glass exterior surface of a building, the glass being the operating surface; or a pipe cleaning robot, where the automatic cleaning device works on the interior surface of a pipe, the interior surface of the pipe being the operating surface. For purely illustrative purposes, the present disclosure will be described with reference to a mopping robot.

[0031] In some embodiments, the mobile platform 1000 may be an autonomous mobile platform or a non-autonomous mobile platform. The term "autonomous mobile platform" refers to the mobile platform 1000 being capable of automatically and adaptively making operational decisions in response to unexpected environmental inputs, while the non-autonomous mobile platform is not capable of adaptively making operational decisions in response to unexpected environmental inputs, but can operate according to a predetermined procedure or logic. Correspondingly, if the mobile platform 1000 is an autonomous mobile platform, the target direction may be determined autonomously by an automatic cleaning device, while if the mobile platform 1000 is a non-autonomous mobile platform, the target direction may be set by a system or manually.

[0032] The sensing system 2000 includes sensing devices such as a positioning device (not shown) located above the mobile platform 1000, a buffer (not shown) located at the front part of the mobile platform 1000, a cliff sensor (not shown) and ultrasonic sensor (not shown) located at the bottom of the mobile platform, an infrared sensor (not shown), a magnetometer (not shown), an accelerometer (not shown), a gyroscope (not shown), and an odometer (not shown), and provides various position information and movement status information of the equipment to the control system.

[0033] For ease of explanation, the following directions are defined: the automatic cleaning device is defined by three perpendicular axes: a lateral axis Y, a front-to-rear axis X, and a vertical axis Z. The direction of the arrow along the front-to-rear axis X is "rear," and the direction opposite to the direction of the arrow along the front-to-rear axis X is "forward." The lateral axis Y is a direction substantially along the width of the automatic cleaning device, the direction of the arrow along the lateral axis Y is "left," and the direction opposite to the arrow along the lateral axis Y is "right." The vertical axis Z is a direction extending upward from the bottom surface of the automatic cleaning device. As shown in FIG. 1 , the direction along the front-to-rear axis X is defined as a second direction, e.g., forward or rearward, and the direction perpendicular to the second direction in the horizontal plane is a first direction, e.g., left or right.

[0034] The control system (not shown) is provided on a circuit board within the mobile platform 1000 and includes an arithmetic processor such as a central processing unit and an application processor that communicates with non-transitory memories such as a hard disk, flash memory, and random access memory. The application processor receives environmental information sensed by the multiple sensors from the sensing system and obstacle information fed back from the positioning device, uses a positioning algorithm, such as SLAM, to draw an instant map of the environment in which the automatic cleaning device is installed, autonomously determines a travel path based on the environmental information and the environmental map, and then controls operations such as forward movement, backward movement, and / or steering of the drive system 3000 according to the autonomously determined travel path. Furthermore, the control system can determine whether to activate the cleaning module 5000 to perform a cleaning operation based on the environmental information and the environmental map.

[0035] The drive system 3000 executes drive commands based on specific distance and angle information, such as x, y, and θ components, to steer the automatic cleaning device across a floor surface. The drive system 3000 includes a drive wheel assembly, and the drive system 3000 can simultaneously control the left and right wheels. For more precise control of the device's operation, the drive system 3000 preferably comprises a left drive wheel assembly and a right drive wheel assembly. The left and right drive wheel assemblies are symmetrically arranged along the horizontal axis defined by the mobile platform 1000. To enable the automatic cleaning device to move more stably across a floor surface or to have higher mobility, the automatic cleaning device may include one or more steering assemblies. The steering assemblies may be driven wheels or drive wheels, and their structural form may be a universal wheel. The steering assemblies may be located in front of the drive wheel assemblies.

[0036] The energy system (not shown) includes a rechargeable battery such as a nickel-metal hydride battery or a lithium battery. The rechargeable battery is connected to a charge control circuit, a battery pack charging temperature detection circuit, and a battery voltage drop monitoring circuit, which are in turn connected to a microcomputer control circuit. The host computer is connected to the charging pile via charging electrodes located on the side or bottom of the main unit for charging.

[0037] The man-machine interactive system 4000 includes keys on a host panel that can be used by the user to select functions, and may further include a display screen and / or indicator lights and / or a speaker, which can display the current status or function options of the device to the user, and may further include a mobile phone client program. In the case of a route navigation type automatic cleaning device, the mobile phone client can display to the user a map of the environment in which the device is installed and the location of the device, providing the user with a wider range of user-friendly functions.

[0038] As shown in Figure 2, the cleaning module 5000 includes a dust box, a fan, and a main brush module. The main brush module sweeps dust from the floor toward the dust box, which is located between the main brush module and the dust box. The fan generates suction to suck dust into the dust box. The dust removal capacity of a vacuum cleaner is characterized by its dust pickup efficiency (DPU). DPU is affected by the wind power utilization rate of the duct consisting of the dust box, dust box, fan, air outlet, and their connecting components, as well as the type and power of the fan, making it a complex system design issue. Compared to conventional plug-in dust collectors, improved dust removal capacity is crucial for energy-constrained automatic cleaning devices. This directly and effectively reduces the energy required, e.g., a machine that can clean 80 square meters of floor space on a single charge can now clean more than 180 square meters on a single charge. In addition, by reducing the number of times it needs to be charged, the battery life is also significantly extended, allowing users to replace the battery less frequently.More intuitively and importantly, the improved dust removal ability is the most obvious and significant user experience, allowing users to directly conclude whether the machine cleans or wipes clean.

[0039] 2 is a schematic diagram of the bottom structure of the automatic cleaning device in FIG. 1. As shown in FIG. 2, the automatic cleaning device includes a moving platform 1000, which is configured to move freely on an operating surface. A cleaning module 5000 is provided at the bottom of the moving platform 1000, which is configured to clean the operating surface. The cleaning module 5000 includes a driving unit 5100, a roller brush frame 5200, and a roller brush 5300 assembled in the roller brush frame 5200. The driving unit 5100 provides a driving force for forward or reverse rotation, and applies the driving force to the roller brush 5300 via a multi-stage gear set. The roller brush 5300 rotates under the driving force to clean the operating surface or to collect dust.

[0040] 2, the roller brush frame 5200 is provided with a front cleaning brush mounting position 5211 and a rear cleaning brush mounting position 5212 for accommodating the cleaning roller brushes. The front cleaning brush mounting position 5211 has a first end 52111 and a second end 52112 opposite to the first end 52111, and one end of the first roller brush 100 is engaged and fixed to the first end 52111, and the other end of the first roller brush 100 is engaged and fixed to the second end 52112. In some embodiments, the front cleaning brush mounting position 5211 is an elongated groove structure in the moving platform, which extends along the first direction. The rear cleaning brush mounting position 5212 has a third end 52121 and a fourth end 52122 opposite to the third end 52121. In some embodiments, the rear cleaning brush mounting position 5212 and the front cleaning brush mounting position 5211 have substantially the same structure, such as an elongated groove structure in a moving platform, which extends along the first direction, and a second roller brush can be mounted in the elongated groove of the rear cleaning brush mounting position 5212 through an opening of the elongated groove structure. Here, the two elongated groove structures are parallel to each other in the second direction. The shape and size of the elongated groove structure are not limited, but only need to accommodate at least a portion of the first roller brush and the second roller brush. The first end of the front cleaning brush mounting position 5211 and the third end of the rear cleaning brush mounting position 5212 are located on one side of the X axis of the front-rear axis, and the second end of the front cleaning brush mounting position 5211 and the fourth end of the rear cleaning brush mounting position 5212 are located on the other side of the X axis of the front-rear axis.

[0041] In the following examples of the present disclosure, the elongated groove structure closer to the steering wheel of the automatic cleaning device will be described in detail as the front cleaning brush mounting position 5211, and the elongated groove structure farther from the steering wheel as the rear cleaning brush mounting position 5212, but of course the reverse is also possible.

[0042] 2, in some embodiments, the automatic cleaning device includes two cleaning roller brushes 5300, one cleaning roller brush mounted at the front cleaning brush mounting position 5211 and designated as the "front roller brush," and the other cleaning roller brush mounted at the rear cleaning brush mounting position 5212 and designated as the "rear roller brush." ​​The front roller brush is mounted in the front cleaning brush mounting position 5211 via an opening in an elongated groove structure, and the rear roller brush is mounted in the rear cleaning brush mounting position 5212 via an opening in an elongated groove structure.

[0043] FIG. 3 shows an assembled structure of a cleaning module provided by some embodiments of the present disclosure, and FIG. 4 shows a cross-sectional structure of a cleaning module provided by some embodiments of the present disclosure. As shown in FIGS. 3 and 4, a roller brush 5300 assembled in a roller brush frame 5200 includes a first roller brush 100 and a second roller brush 200 arranged along a first direction perpendicular to the front-rear axis of the moving platform. The first roller brush 100 includes a first brush member, a first shaft 110, and a and a first filler 120, the first filler 120 being fitted onto the first axial rod 110 so that the first filler 120 and the first axial rod 110 are coaxial. The second roller brush 200 is arranged along a direction parallel to the first roller brush 100; in some embodiments, the first roller brush 100 and / or the second roller brush 200 may be assembled in other directions, such as a second direction that is not parallel to the longitudinal axis; obviously, the second direction and the first direction form a certain angle with the longitudinal axis. The second roller brush 200 includes a second brush member and a second axial member 220, the second axial member 220 being coaxial with the second brush member, wherein the first filler 120 is an elastic member and the second axial member 220 is a rigid member, and the first filler has a first inner diameter and a first outer diameter such that the first filler has a predetermined thickness. The assembled first filler is typically a hollow cylindrical structure having a predetermined thickness and a first inner diameter and a first outer diameter after assembly. However, in some embodiments, the first filler does not necessarily have to be a continuous cylinder, but may be a residual shape after a cylinder has been arbitrarily cut, such as a discontinuous cylinder, or one or more separate sections, all of which have the same thickness after assembly, with the inner and outer surfaces of this thickness each having a certain cylindrical diameter, i.e., the first inner diameter and first outer diameter of the first filler. The first roller brush 100 and the second roller brush 200 rotate in opposite directions, winding up dust on the operating surface when performing a cleaning task and expelling dust into the dust box when performing a dust collection task.In this embodiment, the first roller brush 100 may be the "front roller brush" or the "rear roller brush" described above, and similarly, the second roller brush 200 may be the "front roller brush" or the "rear roller brush" described above, but is not particularly limited thereto.

[0044] Specifically, as shown in Figures 5 and 6, Figure 5 is a cross-sectional view along the second direction of a first roller brush provided by some embodiments of the present disclosure, and Figure 6 is a cross-sectional view along the first direction of a first roller brush provided by some embodiments of the present disclosure.

[0045] The first roller brush 100 includes a first shaft 110, at least one end of which is connected to a multi-stage gear set and receives the driving force of the drive unit 5100 to realize forward or reverse rotation. The first shaft 110 has an elongated cylindrical shape, an elongated rectangular prism shape, or an elongated polygonal prism shape, and is not particularly limited thereto. An elongated cylindrical shape will be used as an example in the description below. The axis of the first shaft 110 is considered to be the rotation axis of the first roller brush 100. After the first roller brush 100 is mounted on the moving platform, the drive system 3000 can drive the first shaft 110 to rotate, and drive the first brush member 130 on the surface of the first shaft 110 to perform cleaning.

[0046] The first roller brush 100 further includes a first filler 120, which is fitted into the first axial rod 110 so that the first filler 120 and the first axial rod 110 are coaxial. As shown in FIG. 4, the cross section of the first filler 120 has an annular structure, and the shape of the inner ring thereof is adapted to the cross section of the first axial rod 110. The shape of the inner ring may be circular, square, polygonal, etc., but is not particularly limited thereto. For example, the outer ring shape is generally circular. When the cross section of the first filler 120 is annular, the cross section of the first filler 120 has an inner diameter and an outer diameter, the inner diameter being substantially the same as the diameter of the first axial rod 110, thereby forming a seamless socket between the first filler 120 and the first axial rod 110, and the outer diameter being substantially the same as the inner diameter of the first cylindrical member 131, thereby forming a seamless socket between the first filler 120 and the first cylindrical member 131. The first filler 120 is a compressible elastic material that compresses inward when biased and recovers to its original shape when no longer biased. Materials such as sponge, organic flexible material, resin material, and foam material may be used, but this list is not exhaustive. Furthermore, the first filler 120 may be a hollowed-out material or structure with the same compressive properties, such as a spring or elastic sheet, although this list is not exhaustive.

[0047] The first roller brush 100 further includes a first brush member 130, which is fitted onto the outside of the first filler 120. The first brush member 130 includes a first cylindrical member 131, which is fitted onto the outside of the first filler 120 so that the first cylindrical member 131 and the first axial rod 110 are coaxial. The first cylindrical member 131 may be generally cylindrical and its length is substantially the same as that of the first axial rod 110. The first cylindrical member 131 is generally compressible, for example, made of an elastic plastic or rubber material, and is capable of being compressed inward and deformed under the action of an external force and recovering to its original shape when the external force is removed. The first cylindrical member 131 generally has a uniform thickness to improve the wear resistance of the entire first brush member 130. The first brush member 130 further includes first brush members 132, which may be a plurality of sheet structures, and the first brush members 132 extend from the outer surface of the first cylindrical member 131 in a direction away from the first cylindrical member 131, with at least one first brush member 132 extending from one end of the first cylindrical member 131 to the other end of the first cylindrical member 131 along the axial direction of the first cylindrical member 131. The first brush members 132 may also be in other forms such as blades or bristles.

[0048] In some embodiments, the number of first brush members 132 is multiple, each first brush member 132 having a spiral structure on the outer surface of the first cylindrical member 131, the multiple first brush members 132 being substantially uniformly distributed along the circumferential direction of the first cylindrical member 131, and the spiral structures of the multiple first brush members 132 being substantially parallel. By designing the first brush members 132 as a spiral structure, dust can be easily wound up when the front and rear roller brushes rotate in opposite directions, preventing excessive impact and damage to the first brush members 132 and improving their service life.

[0049] In some embodiments, there are multiple first brush members 132, each of which has a V-shaped structure on the outer surface of the first cylindrical member 131, and the multiple first brush members 132 are substantially uniformly distributed around the circumference of the first cylindrical member 131, with the tips of the V-shaped structures of the multiple first brush members 132 facing the same direction around the circumference of the first cylindrical member 131. By designing the first brush members 132 as a V-shaped structure, when the front and rear roller brushes rotate in opposite directions, they can easily pick up debris, preventing excessive impact and damage to the first brush members 132 and improving their service life.

[0050] In some embodiments, a plurality of first protruding points 1321 are provided on the surface of the first brush member 132. The plurality of first protruding points on the first brush member 132 are uniformly distributed along the extension direction of the surface of the first brush member 132, and the plurality of first protruding points 1321 can increase the friction force between the brush member and dirt, resulting in a more thorough cleaning.

[0051] In some embodiments, as shown in FIG. 6-1 , the second roller brush 200 includes a second shaft member 220 and a second brush member 230, the second shaft member 220 is coaxial with the second brush member 230, the second brush member 230 is fitted to the outside of the second shaft member 220, the second shaft member 220 constitutes a second shaft rod of the second roller brush 200, the second shaft member 220 is a rigid member, and the second shaft member 220 is provided at at least one end of the second shaft member 220. It includes at least one engaging member 213 (for example, an engaging member 213 is provided at one or both ends of the second shaft member 220, which is called an engaging structure), is connected to the multi-stage gear set of the drive system 3000 via the engaging member 213, and receives the driving force of the drive system 3000 to realize forward or reverse rotation, where the outer shape of the second shaft member 220 is an elongated cylinder, an elongated prism, or an elongated polygonal prism, but is not particularly limited thereto, and an elongated cylinder will be used as an example to explain later.

[0052] In some embodiments, as shown in FIG. 6-1 , the second shaft member 220 includes a hollow structure 2210, the hollow structure 2210 extending through a central axis of the second shaft member 220 along the axial direction of the second shaft member 220, and the second shaft member 220 has a second inner diameter D 2内 and the second outer diameter D 2外 and a second inner diameter D 2内 and the second outer diameter D 2外 constitutes the radial thickness of the second shaft member 220. At least one end of the hollow structure (e.g., one end or both ends of the second shaft member 220) includes a step portion, and the step portion has one, two, or three steps. For example, if the step portion has two steps, the end face of the hollow structure 2210 has a third inner diameter and a fourth inner diameter, where the second inner diameter < the third inner diameter < the fourth inner diameter. Here, the outermost end of the step portion of the hollow structure 2210 forms the accommodating cavity 2222 with the largest diameter (e.g., the accommodating cavity 2222 has the fourth inner diameter). The engaging member 213 has an external shape that fits the step portion. After being assembled to the step portion, the engaging member 213 is fixedly or detachably connected to the hollow structure. The engaging member 213 is directly or indirectly connected to a multi-stage gear set of a drive system and is used to receive the driving force of the drive system 3000 to realize forward or reverse rotation of the second shaft member 220.

[0053] 6-1 and 6-2, the second roller brush 200 further includes a second brush member 230, which is fitted onto the outside of the second shaft member 220. The second brush member 230 includes a second cylindrical member 231, which is fitted onto the outside of the second shaft member 220 so that the second cylindrical member 231 and the second shaft member 220 are coaxial. The second cylindrical member 231 is generally cylindrical and has a length substantially equal to that of the second shaft member 220. The second cylindrical member 231 is generally compressible and made of, for example, an elastic plastic or rubber material, which makes it convenient to fit onto the outside of the second shaft member 220. The second cylindrical member 231 generally has a uniform thickness to improve the wear resistance of the entire second brush member 230. If there is no filler between the second cylindrical member 231 and the second shaft member 220, or at least a filler that is not flexible or elastic, and a rigid filler is provided, the second shaft member is also rigid, so it is entirely possible to regard the rigid filler and the second shaft member as the same functional member, i.e., the two rigid members together constitute the second shaft member, and its outer diameter is obviously the outer diameter of the entire rigid member, i.e., the second outer diameter D of the second shaft member 2外 The second brush member 230 further includes second brush members 232, each having a multiple sheet structure, extending from the outer surface of the second cylindrical member 231 in a direction away from the second cylindrical member 231, and at least one second brush member 232 extending along the axial direction of the second cylindrical member 231 from one end of the second cylindrical member 231 to the other end of the second cylindrical member 231. The second brush members 232 may have other forms, such as blades or bristles.

[0054] In some embodiments, there are multiple second brush members 232, each having a spiral structure on the outer surface of the second cylindrical member 231, the multiple second brush members 232 being substantially uniformly distributed around the circumference of the second cylindrical member 231, and the spiral structures of the multiple second brush members 232 being substantially parallel. The shape of the second brush member 232 is adapted to the shape of the first brush member 132, i.e., if the shape of the second brush member 232 is a spiral structure, the shape of the first brush member 132 is also a spiral structure. By designing the second brush member 232 as a spiral structure, it can easily wind up debris when the front and rear roller brushes rotate in opposite directions, preventing excessive impact and damage to the second brush member 132 and improving its service life.

[0055] In some embodiments, there are multiple second brush members 232, each having a V-shaped structure on the outer surface of the second cylindrical member 231, the multiple second brush members 232 being substantially uniformly distributed along the circumferential direction of the second cylindrical member 231, and the tips of the V-shaped structures of the multiple second brush members 232 facing the same direction along the circumferential direction of the second cylindrical member 231. The shape of the second brush member 232 is adapted to the shape of the first brush member 132, i.e., if the shape of the second brush member 232 is V-shaped, the shape of the first brush member 132 is also V-shaped. By designing the second brush member 132 as a V-shaped structure, when the front and rear roller brushes rotate in opposite directions, the tips of the V-shaped structures of the second brush member 232 interfere with the tips of the V-shaped structures of the first brush member 132, making it easier to wind up debris.

[0056] In some other embodiments, the second roller brush 200 may be realized in other forms. For example, as shown in FIG. 6-2, the second roller brush 200 includes a second axial rod 240, a second filler 250, and a second brush member 230. The structure of the second brush member 230 can be referred to in the above embodiment and will not be repeated here. The second axial member described in the above embodiment is composed of a second axial rod 240 and a second filler 250. The second filler 250 is fitted into the second axial rod 240 so that the second filler 250 is coaxial with the second axial rod 240. The cross section of the second filler 250 is annular, and the shape of the inner ring is adapted to the cross section of the second axial rod 240. The shape of the inner ring may be circular, rectangular, polygonal, etc., but is not limited thereto. It is also possible to use a circular inner ring. The outer ring shape is generally circular, and when the cross section of the second filler 250 is annular, the cross section of the second filler 250 has an inner diameter and an outer diameter, the inner diameter of which is substantially the same as the diameter of the second axial rod 240, thereby realizing a seamless socket between the second filler 250 and the second axial rod 240, and the outer diameter of which is substantially the same as the inner diameter of the second cylindrical member 231, thereby realizing a seamless socket between the second filler 250 and the second cylindrical member 231. The second filler 250 is an incompressible material, and has the property of not being substantially compressed inward even when biased, thereby providing sufficient support for the second brush member 230. The material of the second filler 250 may be a rigid material such as a hard plastic, a hard resin material, or a metal material, and this is not an exhaustive list. Additionally, the second filler 250 may be a hollowed-out material or structure having similar incompressible properties, for example, an incompressible keel structure to reduce the weight of the second roller brush, not all of which are listed here.

[0057] In other embodiments, the second filler 250 may be integrally molded with the second axial rod 240, forming a unitary structure from a hard material to reduce rotational clearance.

[0058] After the first roller brush 100 and the second roller brush 200 are installed, when the first roller brush 100 and the second roller brush 200 are in operation, they rotate at the same speed but in opposite directions. For example, when the first roller brush 100 rotates counterclockwise, the second roller brush 200 rotates clockwise. During rotation, the first and second brush members are always in interference contact at their central positions, meaning that the brush members of the previous layer have not yet separated, while the brush members of the next layer have already come into contact. As rotation continues, the brush members of the previous layer separate, and the brush members on both ends of the next layer come into contact in the center, forming a diamond-shaped sealed air passage. As the brush members rotate, they collect dust in the center and are sucked into the dust box inside the device via air duct 5400, thereby achieving the cleaning purpose. As the first and second roller brushes rotate synchronously, the diamond-shaped sealed air passage formed by the brush members of the next layer gradually becomes smaller. When the current sealed cleaning is completed, the next sealed cleaning immediately begins, that is, the brush members at both ends of the next layer come into contact in the middle to form a diamond-shaped sealed air passage. By repeating this process, the first and second roller brushes achieve a continuous cleaning effect, further improving cleaning efficiency.

[0059] In some embodiments, a plurality of second protruding points 2321 are provided on the surface of the second brush member 232. The plurality of second protruding points on the second brush member 232 are uniformly distributed along the extension direction of the surface of the second brush member 232, and the plurality of second protruding points 2321 can increase the friction force between the brush member and dirt, resulting in more thorough cleaning.

[0060] In some other embodiments, the first brush element in the first roller brush 100 and the second brush element in the second roller brush 200 may be different, depending on the specific cleaning needs. Optionally, the first roller brush 100 is a bristle brush and the second roller brush 200 is an adhesive brush, and this combination satisfies the cleaning effects for various floor environments, i.e., the bristle brush has good cleaning ability for hair or fine, soft fibers, and the first roller brush can clean dirt on soft floor surfaces such as carpets, while the adhesive brush has good cleaning ability for hard floor surfaces, and the second roller brush can clean floor surfaces such as floors and tiles.

[0061] In some embodiments, the outer diameter of the second shaft member is smaller than the outer diameter of the first filler and / or the outer diameter of the second shaft member is larger than the inner diameter of the first filler. The second roller brush has an incompressible hard core structure, and to avoid a significant decrease in the passage of large particles of dust due to the incompressible hard core structure, the blade of the second roller brush must be set longer than the length of the blade of the first roller brush. The distance from the outer diameter of the second shaft member (hard core) of the second roller brush to the floor surface is equal to or smaller than the distance from the outer diameter of the first filler (soft core) of the first roller brush to the floor surface. In this case, the outer diameter of the second shaft member must be smaller than the outer diameter of the first filler. Furthermore, if the outer diameter of the second shaft member (hard core) of the second roller brush is too large, the flexible space that can pass between the front and rear roller brushes becomes small, and slightly large hard debris becomes stuck between the first and second roller brushes. Furthermore, if the outer diameter of the second shaft member (hard core) of the second roller brush becomes even smaller, when the outer diameter of the first brush member of the first roller brush and the second brush member of the second roller brush are the same, the length of the corresponding second brush member gradually decreases as the outer diameter of the second shaft member (hard core) decreases. If the length of the second brush member exceeds a reasonable range, the second brush member will protrude, weakening its cleaning power, and increase the surface area of ​​the second brush member, making it easier for dust to adhere to the second brush member and adversely affecting the cleaning effect. Therefore, to ensure the cleaning effect, the length of the second brush member must not be too large, and at this time the outer diameter of the corresponding second shaft member (hard core) must not be too small. The outer diameter of the second shaft member must be larger than the inner diameter of the first filler, so that the length of the second brush member can be kept within an appropriate range.

[0062] In some embodiments, the plane where the lowest point of the first filler is located is lower than the plane where the lowest point of the second shaft member is located. Because the first filler is compressible, the plane where the lowest point of the first filler is located needs to be lower than the plane where the lowest point of the second shaft member is located in order to ensure the passage of dirt below the first roller brush and the second roller brush. When the first roller brush is the front roller brush, the compressibility of the first filler ensures the passage of dirt. When the second roller brush is the front roller brush, the high lowest point of the second shaft member still ensures the passage of dirt. At the same time, because the first roller brush is the rear roller brush and is close to the floor, it blocks dirt from below the first roller brush, thereby improving the cleaning efficiency of the cleaning device.

[0063] In some embodiments, the maximum distance that the first brush member extends from the outer surface of the first cylindrical member in a direction away from the first cylindrical member is smaller than the maximum distance that the second brush member extends from the outer surface of the second cylindrical member in a direction away from the second cylindrical member. As described above, if the outer diameter of the first filler is larger than the outer diameter of the second shaft member and the length of the first brush member is equal to or greater than the length of the second brush member, the entire first roller brush becomes large. If the first roller brush and the second roller brush are assembled on substantially the same horizontal plane, the interference between the first brush member and the floor surface will increase, resulting in increased noise caused by the first brush member hitting the floor surface and increased resistance during the movement of the automatic cleaning device, making it difficult for the automatic cleaning device to perform its cleaning task.

[0064] In some embodiments, the first brush member has an outer periphery, which is the maximum distance extending from the outer surface of the first cylindrical member in a direction away from the first cylindrical member, forming the outer diameter of the first roller brush, and the second brush member has an outer periphery, which is the maximum distance extending from the outer surface of the second cylindrical member in a direction away from the second cylindrical member, forming the outer diameter of the second roller brush, and the outer diameter of the first roller brush is substantially the same as the outer diameter of the second roller brush. When the first roller brush and the second roller brush are assembled in substantially the same horizontal plane or with only a slight difference, the first roller brush and the second roller brush have sufficient interference with the floor surface to achieve a dual-brush cleaning effect. Furthermore, when the automatic cleaning device is not in operation, the dual roller brushes are accommodated substantially flat within the cleaning module in the retracted state, which reduces the complexity of design and manufacturing due to design mismatches between the front cleaning brush mounting position and the rear cleaning brush mounting position.

[0065] In some embodiments, the distance between the central axis of the first roller brush and the central axis of the second roller brush is equal to or less than the outer diameter of the first roller brush and / or the second roller brush, for example, the distance between the central axis of the first roller brush and the central axis of the second roller brush is less than the outer diameter of the first roller brush and / or the second roller brush. When the outer diameters of the first roller brush and / or the second roller brush are substantially the same, if the distance between the central axis of the first roller brush and the central axis of the second roller brush is greater than the outer diameter of the first roller brush and / or the second roller brush, the interference effect between the first brush member and the second brush member will disappear, and the cleaned dirt will not be wound between the first roller brush and the second roller brush, which will affect the overall cleaning effect of the cleaning device.

[0066] In some embodiments, the outer periphery of the first roller brush is defined by the maximum distance the first brush member extends from the outer surface of the first cylindrical member in a direction away from the first cylindrical member, the outer periphery of the second brush member is defined by the maximum distance the second brush member extends from the outer surface of the second cylindrical member in a direction away from the second cylindrical member, and the distance between the central axis of the first roller brush and the central axis of the second roller brush is less than half the sum of the outer diameters of the first roller brush and the second roller brush. For example, if the distance between the central axis of the first roller brush and the central axis of the second roller brush is less than half the sum of the outer diameters of the first roller brush and the second roller brush, and the outer diameters of the first roller brush and / or the second roller brush are not equal, if the distance between the central axis of the first roller brush and the central axis of the second roller brush is greater than half the sum of the outer diameters of the first roller brush and the second roller brush, the interference effect between the first brush member and the second brush member is lost, and the cleaned dirt is not wound between the first roller brush and the second roller brush, which affects the overall cleaning effect of the cleaning device.

[0067] In some embodiments, the minimum distance from the inner diameter of the first filler to the outer diameter of the second shaft member is greater than the difference between the inner and outer diameters of the first filler. If the inner diameter of the first filler is too large or the outer diameter of the second shaft member is too large, the minimum distance from the inner diameter of the first filler to the outer diameter of the second shaft member is too small. This reduces the flexible space that can pass between the front and rear brushes, preventing even slightly larger debris, and therefore flexible debris, from getting caught between the two brushes and entering or leaving the dust box. The critical distance is when the outer diameter of the second shaft member contacts the outer diameter of the first filler. At this point, even though there is still space for the first filler to be compressed, there is no gap between the first filler and the second shaft member. As a result, the suction force of the fan to remove debris is blocked by the first filler and the second shaft member, significantly reducing the effectiveness of debris getting into and out of the dust box and reducing cleaning efficiency.

[0068] In some embodiments, the first roller brush and the second roller brush are installed in front and behind the moving direction of the automatic cleaning device. In this case, a double brush assembly structure is formed with a soft front side and a hard rear side. In order to prevent dust from leaking from the rear side, the plane on which the lowest point of the outer periphery of the second roller brush is located is made lower than the plane on which the lowest point of the outer periphery of the first roller brush is located, thereby increasing the interference between the second brush member and the floor surface and preventing dust from leaking from below the second roller brush.

[0069] In some embodiments, the second roller brush and the first roller brush are installed in front and behind the moving direction of the automatic cleaning device. In this case, a double brush assembly structure is formed with a hard front side and a soft rear side. In order to prevent dust from leaking from the rear side, the plane on which the lowest point of the outer periphery of the first roller brush is located must be lower than the plane on which the lowest point of the outer periphery of the second roller brush is located, thereby increasing the interference between the first brush member and the floor surface and preventing dust from leaking from below the first roller brush.

[0070] The automatic cleaning device provided by the embodiments of the present disclosure has a double roller brush structure of a first roller brush and a second roller brush, with the first filler in the first roller brush being an elastic member and the second shaft member in the second roller brush being a rigid member, so that the automatic cleaning device can effectively clean the floor surface with two types of roller brushes, soft and hard, improve the passage of dirt between the first roller brush and the second roller brush, and rationally set the amount of interference between the two types of roller brushes and the floor surface, thereby improving the overall cleaning efficiency of the floor surface.

[0071] Hereinafter, the specific structure of the first roller brush (also called a soft brush or cleaning brush) will be described in detail with reference to Figures 7 to 12, and the same structure and function have the same technical effects, so they will not be repeated here.

[0072] Fig. 7 is an exploded view of the three-dimensional structure of an example of a cleaning brush provided by the present disclosure. Fig. 8 is a three-dimensional structure view of an example of an end member of the cleaning brush of Fig. 7. Fig. 9 is a three-dimensional structure view of the end member of the cleaning brush of Fig. 8 from another angle.

[0073] 7 to 9, an embodiment of the present disclosure provides a cleaning brush 100. The cleaning brush 100 includes a shaft 110 having a shaft body 113 and a first end 111 and a second end 112 on either side of the shaft body 113, and a first end member 120 attached to the first end 111, the first end member 120 having a first assembly structure 121 on the side of the first end member 120 away from the shaft 110. Specifically, the first assembly structure 121 is a transmission structure, and the first assembly structure 121 is connected to a drive mechanism of a cleaning device.

[0074] Specifically, the first end member 120 has at least one first introduction portion 1221, the first end 111 has at least one first fitting portion 1111, and the at least one first introduction portion 1221 is fitted into the at least one first fitting portion 1111 to guide the fitting structure and attach the first end member 120 to the first end 111 only in a circumferential assembly method, i.e., the first end member 120 and the shaft 110 are assembled in a single installation direction.

[0075] The meaning of the circumferential assembly method in this specification is as follows: when the two assemblies are rotated 360 degrees relative to each other and there are N types of assembly methods, it is determined that the two have N types of circumferential assembly methods, where N is 1 or more.

[0076] 8, the first end member 120 includes a first guide sleeve 122, which is configured to receive the first end portion 111, and the at least one first introduction portion 1221 is provided on an inner peripheral wall of the first guide sleeve 122 and is a protrusion that protrudes inward from the inner peripheral wall of the first guide sleeve 122. The first end member 120 is attached to the first end portion 111 on the driving side.

[0077] Specifically, at least the first introduction portion 1221 extends spirally along the circumferential direction of the first guide sleeve 122 in a direction away from the first assembly structure 121, and more specifically, it is a spiral that extends while rotating spirally along the inner circumferential wall, and the first introduction portion 1221 has a rotation direction, for example, a clockwise (or counterclockwise) rotation direction around the axis z of the shaft 110.

[0078] In this embodiment, the first introduction portion 1221 is a protrusion that protrudes from the inner wall of the first guide sleeve 122, but this is not limited to this, and it is sufficient that one of the first introduction portion 1221 and the first fitting portion 1111 is a protrusion and the other is a recessed portion.

[0079] 8, there are two first introduction portions 1221, and the two first introduction portions 1221 have different sizes. The different sizes of the two first introduction portions effectively ensure that the first end member 120 and the drive end of the shaft have only a single mounting direction, and components such as the blade of the cleaning brush can be assembled in a single mounting direction.

[0080] In this embodiment, the number of the first introduction sections 1221 is two, but is not limited to this; in other examples, the number of the first introduction sections 1221 may be three or more; the above is described as an optional example and is not to be understood as limiting the present disclosure.

[0081] 9, a first fitting portion 1111 corresponding to the first first introduction portion 1221 is provided on the outer periphery of the first end portion 111 of the shaft rod 110. In this example, two first fitting portions 1111 are provided on the outer periphery of the first end portion 111, and the two first fitting portions 1111 correspond one-to-one to the two first introduction portions 1221, respectively. The first fitting portions 1111 are grooves recessed inward from the outer periphery of the first end portion 111, and the first introduction portions 1221 are fitted into the first fitting portions 1111 to form a guide and fitting structure, so that the first end member 120 can be attached to the first end portion 111 using only a single circumferential assembly method.

[0082] By adding two different sized first introduction portions to the inner peripheral wall of the first guide sleeve, introduction and installation can be performed more effectively, and the first end member can be attached to the first end using only a single circumferential assembly method, which improves the ease of installation of the end member and the stability of the installation structure.

[0083] Optionally, a marking portion 1223 (see Figure 8) is provided on the outer circumference of the first guide sleeve 122, configured to mark the position of the first introduction portion 1221 on the outer circumference of the first guide sleeve 122, mark the rotational assembly direction when attaching the first end member 120 to the first end 111 of the shaft 110, and assemble the first introduction portion 1221 in alignment with the first fitting portion 1111.

[0084] 8 to 10 , a first locking portion 1222 is provided on the first guide sleeve 122, and is, for example, a groove recessed inward from the outer circumferential surface of the first guide sleeve 122. Correspondingly, a first locking fitting portion 1112 is provided on the first end portion 111, and the first locking portion 1222 is fitted into the first locking fitting portion 1112 to lock the first end member 120 to the first end portion 111.

[0085] 9 and 10, the first end member 120 further includes a first guide shaft 123, which extends along the axis of the first guide sleeve 122, and has a first guide hole 1113 on the end face of the first end 111 away from the second end 112, which is coaxial with the shaft 110 and configured to accommodate the first guide shaft 123.

[0086] 9 and 10, the end surface of the first assembly structure 121 away from the shaft has a regular polygonal shape, and the number of sides of the regular polygon is a divisor of the number of brush members. In other words, the number of sides of the regular polygon on the outer end surface of the first end member corresponds to the number of sets of brush members in the automatic cleaning device. For example, the number of sides N of the regular polygon is a divisor of the number of sets (e.g., 4 sides and 8 sets of blades, e.g., 4 sides and 4 sets of blades), so that after the cleaning brush is attached to the automatic cleaning device according to the N directions, the directions of the blades and other components in the brush members of the cleaning brush are consistent.

[0087] In this embodiment, the regular polygon has N straight sides, but is not limited to this, and in other embodiments, the regular polygon may have curved sides or a combination of straight and curved sides. Furthermore, in other examples, the shape of the regular polygon changes adaptively depending on the number of brush members.

[0088] 7, the cleaning brush 100 further includes a brush member 130 that is coaxial with the shaft 110, and the brush member 130 includes a cylindrical member 131 fitted onto the outer periphery of the shaft 110, and a plurality of brush members 132. The plurality of brush members 132 extend from the outer surface of the cylindrical member in a direction away from the cylindrical member 131, and the plurality of brush members 132 are uniformly arranged along the circumferential direction of the cylindrical member.

[0089] Specifically, the brush member 131 includes first brush members, for example, the first brush members are V-shaped and include five sets of first brush members.

[0090] In another example, the brush members may further include a second brush member or a third brush member, etc., and the second brush member, the third brush member, and the first brush member may have different shapes, lengths, etc. Furthermore, the structures of the brush members of different sets may be substantially the same, and each set of brush members may include one or more blades, and when multiple blades are included, the structures of the multiple blades are usually not completely the same.

[0091] Specifically, a flexible filler (not shown) is filled between the brush member 130 and the shaft 110, and the flexible filler covers the outer periphery of the shaft body and exposes the first end and the second end.

[0092] The first end member 120 further includes a first blocking structure 125, which is disposed between the first assembly structure 121 and the first guide sleeve 122 and serves to prevent tangled material from excessively extending away from the brush member and the cleaning brush. The first blocking structure 125 may be, for example, at least one blocking ring, and in this example, two blocking rings. As shown in FIG. 8 , the first blocking structure 125 includes a first wall, a recess, and a second wall extending from the outside to the inside along the axial direction of the cleaning brush, and the thickness of the first wall is greater than the thickness of the second wall. By providing the blocking structure, tangled material, such as dust, is directly tangled in the blocking structure of the first end member, preventing it from becoming entangled on the shaft. When the end member is removed, the tangled material can be removed together with the cap member.

[0093] The first introduction portion in the first guide sleeve of the first end member and the drive side end of the shaft rod form a guide fitting structure, which is fitted into the first lock fitting portion of the end of the shaft rod via the first lock portion on the first guide sleeve to form a lock fitting structure. The cooperative fitting of the guide fitting structure and the lock fitting structure realizes a more efficient mounting structure, which can further optimize the mounting structure of the end member and the shaft rod and further optimize the overall structure of the cleaning brush.

[0094] 11 is an exploded view of the cleaning brush of FIG. 7 at another angle, and FIG. 12 is an exploded view of the second end member and shaft of the cleaning brush of FIG. 7 at one angle.

[0095] 11 and 12, the cleaning brush 100 further includes a second end member 140. The second end member 140 is located on the driven side and is attached to the second end 112 of the shaft 110. A second assembly structure 141 (specifically, a bearing structure) is provided on the side of the second end member 140 away from the shaft 110. The second assembly structure 141 is rotatable with respect to the shaft and is rotatably connected to another structure of the cleaning device (such as the device body) via the second assembly structure 141.

[0096] As shown in Figures 11 and 12, the second end member 140 has at least one second introduction portion 1421, the second end 112 has at least one second fitting portion 1121, the at least one second introduction portion 1421 is fitted into the at least one second fitting portion 1121 to form a guiding and fitting structure, and the second end member 140 is attached to the second end in a plurality of circumferential assembly methods.

[0097] Furthermore, the second introduction portion 1421 extends spirally along the circumferential direction of the second guide sleeve 142 in a direction away from the second assembly structure 141, specifically, it is a spiral extending by rotating spirally along the inner circumferential wall, and the second introduction portion 1421 has a rotation direction, for example, a rotation direction z clockwise (or counterclockwise) around the axis of the shaft 110, thereby forming a second introduction direction. In this example, the second introduction direction is the same as the first introduction direction.

[0098] In this embodiment, the first introduction direction is the same as the second introduction direction, but this is not limited thereto. In other examples, the rotation direction of the first introduction portion may be, for example, non-helical or linear. Furthermore, in other examples, the second introduction direction may be different from the first introduction direction. The above is described as an optional example and is not to be understood as limiting the present disclosure.

[0099] As shown in FIG. 12, the at least one second introduction portion 1421 includes two second introduction portions 1421, and the two second introduction portions 1421 have the same shape and size, and the second end member is attached to the second end portion 112 by two types of circumferential assembly methods.

[0100] Preferably, when the introduction directions of the first introduction portion 1221 and the second introduction portion 1421 are the same, the sizes of the two first introduction portions 1221 are different (correspondingly, the sizes of the first fitting portion 1111 and the second fitting portion 1121 are different), the sizes of the two second introduction portions 1421 are the same, and the size of the second introduction portion 1421 is between the sizes of the two first introduction portions 1221.

[0101] The size of the two second guide portions on the driven end is between the sizes of the two first introduction portions on the driving side, ensuring that the second end member can be freely attached at multiple angles, preventing the end members on both sides from being attached upside down, and efficiently ensuring the correct orientation of members such as blades after the cleaning brush is attached.

[0102] In other examples, the number of second introduction portions may be three or more. The above is described as an optional example and is not to be understood as limiting the present disclosure. Furthermore, for the first end member and the second end member, preferably, two first introduction portions of different sizes are provided on the driving side. This is because the driving side requires an installation angle, so the driven side second end member does not need to be designed with a different size. This is because the driven side second assembly structure (specifically, the bearing structure) can freely rotate with respect to the shaft. After the bearing structure is assembled to the main body of the automatic cleaning device, the remaining part of the cleaning brush can freely rotate with respect to the bearing structure, and there is no need for an assembly angle on the driven side. Therefore, in other examples, the second introduction portions may be the same size.

[0103] The first introduction portion 1221, the second introduction portion 1421, the first fitting portion 1111, and the second fitting portion 1121 form a guide and fitting structure, thereby realizing a more efficient guide and fitting structure. By making the two first introduction portions 1221 different in size and making the second introduction portion and the first introduction portion different in size, the first end member is attached to the first end portion in only one circumferential assembly method, and the second end member is attached to the second end portion in multiple circumferential assembly methods, which allows the attachment angles between the first end member, the second end member, and the shaft to be accurately determined, resulting in a more efficient attachment structure.

[0104] Furthermore, a second locking portion 1422 is provided on the outer periphery of the second guide sleeve 142 of the second end member 140, and may be, for example, a groove recessed inward from the outer periphery of the second guide sleeve 142, or the second locking portion 1422 may be a through-hole passing through the second guide sleeve 142. Correspondingly, a first locking engagement portion 1123 is provided on the second end portion 112, and the second locking portion 1422 is engaged with the second locking engagement portion 1123 to lock the second end member 140 to the second end portion 112, thereby forming a locking engagement structure.

[0105] As shown in FIG. 12, the second end member 140 further includes a second guide shaft 144, which extends along the axis of the second guide sleeve 142, and has a second guide hole (not shown) on the end surface of the second end 112 away from the first end 111, which is coaxial with the shaft 110 and configured to accommodate the second guide shaft 144.

[0106] Furthermore, the second end member 140 further includes a second blocking structure 145 , which is provided on the side of the second guide sleeve 142 away from the axial rod 110 .

[0107] Specifically, the outer diameter of the blocking structure 145 is larger than the outer diameter of the second guide sleeve 142. By providing the blocking structure on the second end member, entangled objects such as dust and other debris are directly entangled in the blocking structure of the second end member, preventing the debris from becoming entangled on the shaft rod, and allowing the debris to be removed together with the cap member when the end member is removed.

[0108] Optionally, a marking portion 1423 is further provided on the second guide sleeve 142, configured to mark the position of the second introduction portion 1421 on the outer circumference of the second guide sleeve 142, and is used to mark the rotational assembly direction when attaching the second end member 140 to the shaft 110 and the second end 112, so that the second introduction portion and the second mating portion are aligned and assembled.

[0109] Furthermore, the second assembly structure 141 of the second end member 140 is configured to have a polygonal shape corresponding to the number of the brush members. In this example, the polygonal shape of the outer end surface of the second assembly structure 141 is a pentagon formed by a combination of straight lines and curves.

[0110] Preferably, the regular polygonal shape of the outer end surface of the first end member 120 and the polygonal shape of the outer end surface of the second assembly structure 141 are different, and the shapes of the outer end surfaces of the first end member and the second end member are different, so that the two ends can be more easily distinguished and installation convenience can be improved.

[0111] The cleaning brush of the present disclosure is configured to have a single circumferential assembly method for the lead-in member of the end member of the drive end, thereby ensuring that the drive end has a relatively constant mounting direction and making it easy to control the mounting angle of the roller brush. This is particularly useful in some scenarios where there are certain pre-set requirements for the direction or alignment direction of the sub-members of the roller brush, particularly the blades, such as when two of the present disclosure's roller brushes are employed to form a double brush system, and each blade has certain alignment requirements.

[0112] The cleaning brush of the present disclosure forms a guide fitting structure by the introduction portion on the inner wall of the guide sleeve of the end member and the end of the shaft rod, and a lock fitting structure by the lock portion on the outer periphery of the guide sleeve and the end of the shaft rod. The cooperative fitting of the guide fitting structure and the lock fitting structure makes introduction installation more efficient, realizes a more efficient guide fitting structure, and realizes a more efficient foolproof installation structure, improves the ease of installation of the end member and the stability of the installation structure, and optimizes the installation structure of the end member and the shaft rod, thereby optimizing the overall structure of the cleaning brush.

[0113] Furthermore, by making the sizes of the two first introduction portions different and making the sizes of the second introduction portion and the first introduction portion different, the first end member is attached to the first end portion using only a single circumferential assembly method, and the second end member is attached to the second end portion using multiple circumferential assembly methods, and the attachment angles between the first end member, the second end member and the shaft can be accurately determined, thereby realizing a more efficient attachment structure.

[0114] Furthermore, by providing markings on the outer periphery of the first guide sleeve and the second guide sleeve to mark the rotational assembly direction when attaching the first end member and the second end member to the first end and the second end of the shaft, the alignment and assembly of the first introduction portion and the first fitting portion is effectively ensured, and the alignment and assembly of the second introduction portion and the second fitting portion is even more effectively ensured.

[0115] Furthermore, since the number of sides of the regular polygon on the outer end surface of the first end member is a divisor of the number of sets of brush members of the automatic cleaning device, after the cleaning brush is attached to the automatic cleaning device equipment according to the N directions, the directions of the members such as the blades in the brush members of the cleaning brush are ensured to be consistent.

[0116] Furthermore, by providing a blocking structure on the end member, the entangled material is directly entangled in the blocking structure of the end member, and the entanglement of the entangled material on the shaft rod can be effectively prevented.

[0117] Hereinafter, the specific structure of the above-mentioned second roller brush (also called hard brush or cleaning brush) will be described in detail with reference to Figures 13 to 21, and the same structure and function have the same technical effects, so they will not be repeated here.

[0118] Figure 13 is an exploded view of the three-dimensional structure of an example of a cleaning brush provided by the present disclosure. Figure 14 is a schematic cross-sectional view of the cleaning brush of Figure 13. Figure 15 is a three-dimensional structure of an example of an end member of the cleaning brush of Figure 13. Figure 16 is a schematic three-dimensional structure of an example of a fitting member for the shaft of Figure 13. Figure 17 is a schematic three-dimensional structure of an example of a guide fitting structure between the end member and fitting member for the shaft of Figure 13. Figure 18 is a structural exploded view of the guide fitting structure of Figure 17.

[0119] 13 to 18, the cleaning brush 200 includes a shaft 210 having a first end 211 and a second end 212 that are axially opposite to each other, at least one of the first end 211 and the second end 212 including a fitting member 213, a brush member 230, and an end member 2200 that is coaxially fitted around the outer periphery of the shaft 210 and fitted and attached to the fitting member 213, and an assembly structure 221 is provided on the side of the end member 2200 away from the fitting member 213.

[0120] In some embodiments, as shown in Figure 14, at least one of the first end and the second end of the shaft rod has an accommodation space, at least a portion of the shaft rod has a solid structure, the accommodation space includes a first space segment, the first space segment is configured to accommodate at least a portion of the guide rod, the accommodation space further includes a second space segment, a guide portion is provided on the guide rod, the second space segment has a structure that matches the shape of the guide portion of the guide rod and is fitted and connected to the guide portion, the accommodation space further includes a third space segment, a guide shaft is further provided on the end member, the third space segment is configured to accommodate at least a portion of the guide shaft, the inner diameter of the first space segment is larger than the inner diameter of the second space segment, and / or the inner diameter of the second space segment is larger than the inner diameter of the third space segment.

[0121] Specifically, the assembly structure 221 includes, for example, a bearing structure 221" and a transmission structure 221', and when the end member 2200 is a driving side end member, i.e., when the end member 2200 is a first side end member 2200' connected to the drive unit of the cleaning module, the assembly structure 221 is, for example, a transmission structure 221'. When the end member 2200 is a driven side end member, i.e., when the end member 2200 is a second side end member 2200" opposite to the first side end member 2200', the assembly structure 221 is, for example, a bearing structure 221".

[0122] The following will mainly explain the connection and assembly relationship between the end member and the shaft rod using the end member on the driving side as an example, and the connection relationship between the end member and the shaft rod on the driven side is similar.

[0123] As shown in FIG. 14, an accommodation space 214 is opened on the end surface of the end where the engaging member 213 is located, facing the end member 2200, and the engaging member 213 is accommodated in the accommodation space 214, and a portion of the end member 2200 is inserted into the accommodation space 214 and fitted into the engaging member 213 for attachment.

[0124] Specifically, the end face of the fitting member 213 closest to the assembly structure 221 is farther from the assembly structure 221 than the opening 2141 of the accommodating space 214, as shown in Figure 14. That is, the outer end face of the fitting member 213 is closer to the center of the shaft than the outer end face of the end to which the fitting member 213 belongs. The outer end face of the fitting member 213 is closer to the center of the shaft than the outer end face of the corresponding side of the brush member.

[0125] Optionally, the end surface of the brush member 230 closest to the assembly structure 221 is flush with the opening 2141 of the receiving space 214, as specifically shown in Figure 14. On the one hand, the end of the brush member is effectively supported, maintaining a certain strength when cleaning the cleaning surface, and on the other hand, the brush member can effectively protect the mounting assembly three-dimensional structure, such as the mandrel and internal fitting members, preventing damage due to collision and deterioration of usability.

[0126] As shown in FIG. 15, the end member 2200 includes a guide rod 222, which is located on the side of the assembly structure 221 closer to the axial rod 210, and a guide portion 2221 is provided at the end of the guide rod 222 away from the assembly structure 221, and the guide portion 2221 is configured to form a rotational engagement structure together with the engagement member 213.

[0127] Specifically, the guide portion 2221 extends spirally along the circumferential direction of the guide rod 222 in a direction away from the assembly structure 221. The guide portion 2221 is configured to be set in a spiral shape having a rotation direction, and specifically, the guide portion 2221 extends spirally along the outer circumferential surface of the guide rod 222 (i.e., extends while rotating spirally), and the guide portion 2221 has a rotation direction, for example, a clockwise (or counterclockwise) rotation direction around the axis of the shaft 210.

[0128] 14 and 15, the end member 2200 includes a guide rod 222 and at least one guide portion 2221, where the guide portion 2221 is provided on the outer circumferential surface of the guide rod 222, and the plurality of guide portions 2221 are uniformly distributed around the circumferential direction of the guide rod 222, and the guide portion 2221 forms a rotational engagement structure together with the engagement member 213, as shown in FIG. 14 and FIG. 17.

[0129] 15, the guide portion 2221 is a protrusion formed by etching a groove from the outer circumferential surface of the guide rod 222. The guide portion 2221 is provided at one end of the guide rod 222 that is remote from the assembly structure 221.

[0130] Specifically, there are a plurality of guide portions 2221. In the example of Fig. 15, there are five guide portions 2221, and these five guide portions 2221 have the same size.

[0131] In other examples, the number of guide portions may be three, four, six, or more, and the size of the guide portions may vary; these are described as alternative examples and are not intended to limit the present disclosure. Furthermore, with regard to the method of forming the guide portions, the guide portions are grooves formed by etching from the outer circumferential surface of the guide rod to the inside; these are described as alternative examples and are not intended to limit the present disclosure. Optionally, at least one of the shape, number, and size of the guide portions 2221 may be different.

[0132] Furthermore, the end member 2200 further includes a guide shaft 223, which extends from the guide rod 222 away from the assembly structure 221, and further includes a snap-stop member 2231 at the end of the guide shaft 223 away from the guide rod 222. Furthermore, the guide rod 222 is an injection-molded part, and the guide shaft 223 is a metal part.

[0133] In this embodiment, one end of the guide shaft 223 close to the assembly structure 221 is fitted into the guide rod 222 .

[0134] Specifically, the guide shaft 223 further includes a snap-fastening member 2231 arranged along the outer circumferential surface, the snap-fastening member 2231 being, for example, an annular groove, which together with the fitting member 213 forms a snap-fastening fitting structure.

[0135] As shown in FIG. 16, the fitting member 213 includes a fitting portion 2131 that fits the shape of the guide portion 2221 , and the fitting portion 2131 has a spiral groove that accommodates the guide portion 2221 .

[0136] Specifically, the engaging member 213 includes a main body 2130, the main body 2130 having a cavity, the main body 2130 including an engaging portion 2131 built into the cavity, the engaging portion 2131 being a spiral groove extending along the inner wall of the cavity, the engaging portion 2131 forming a rotational engaging structure together with the guide portion 2221, and the guide rod of the end member and the engaging member forming a rotational engaging mechanism, see FIG. 17 for details.

[0137] In this example, the number of the fitting portions 2131 is the same as the number of the guide portions 2221, for example, five.

[0138] In addition, as for the shape of the fitting portion, in another example, the fitting portion may be a groove, and the guide portion may be a protrusion. As for the number of fitting portions, in another example, it may be three, four, six or more, as long as the number of guide portions and the number of fitting portions are the same. The above are described as optional examples, and are not to be understood as limiting the present disclosure.

[0139] A guide portion is added to the outer peripheral surface of the guide rod, and the guide rod of the end member and the fitting member of the axial rod form a rotational fitting structure, which effectively achieves guided installation, realizes an effective fool-proof installation structure, improves the ease of installation of the end member, and enhances the stability of the installation structure. The rotational fitting structure formed by the guide rod of the end member and the fitting member inside the axial rod is fitted into the snap-fit ​​fitting structure formed by the guide shaft and the fitting member, which more efficiently achieves guided installation, realizes a more effective fool-proof installation structure, further improves the ease of installation of the end member, and further enhances the stability of the installation structure.

[0140] In the example of Figure 16, the engaging member 213 includes an extension portion 2132 connected to and extending outward from a main body portion 2130, wherein the extension portion 2132 is closer to the center of the axial rod 210 than the main body portion 2130, and the outer diameter of the extension portion 2132 is smaller than the outer diameter of the main body portion 2130.

[0141] As shown in Figures 17 and 18, the extension portion 2132 has a plurality of convex protrusions 21321 uniformly distributed on its outer circumferential surface, forming an uneven surface on the outer circumferential surface of the extension portion 2132, which is used to form a fitting structure corresponding to the interior of the axial rod 210 (i.e., the shape of the interior of the axial rod), thereby increasing the contact surface between the fitting member 213 and the interior of the axial rod 210, allowing the fitting member 213 to be better connected to the accommodating space 214 of the axial rod 210, improving the connection strength of the connection structure between the fitting member 213 and the axial rod 210, and making the installation more stable.

[0142] The coupling structure between the fitting member 213 and the inside of the axial rod 210 may be a stepped fitting structure, etc. In other embodiments, the entire or at least a part of the fitting member 213 assembly may be integrally formed with the axial rod 210. The above are described as optional examples and are not to be construed as limiting the present disclosure.

[0143] 17, a snap-fastening portion 21322 is provided at one end of the fitting member 213 close to the center of the shaft, and the snap-fastening portion 21322 is closer to the center of the shaft than the convex protrusion 21321. The snap-fastening portion 21322 is, for example, a claw portion, and the snap-fastening portion 21322 and the snap-fastening member 2231 (i.e., an annular groove portion or annular protruding structure) of the guide shaft 223 of the end member 2200 form a snap-fastening fitting structure.

[0144] 13, the end member 2200 is provided with a blocking structure 225, which is used to prevent the tangled material from being excessively stretched away from the cleaning brush. The blocking structure 225 is provided on the side closer to the assembly structure 221 than the guide rod 210 (i.e., on the side farther from the center of the shaft).

[0145] Specifically, the outer diameter of the blocking structure 225 is larger than the outer diameter of the guide rod 210, and the blocking structure 225 is spaced a certain distance from the first end 211 of the shaft 210, as shown in FIGS.

[0146] In some embodiments, the outer diameter of the blocking structure 225 is larger than the inner and outer diameters of the receiving space, the brush member includes a cylindrical member, and the diameter of the cylindrical member is smaller than the diameter of the blocking structure, one end of the brush member close to the axial rod is within the axial projection of the blocking structure 225, the first brush member has a first thin-walled portion, and the first thin-walled portion is substantially within the axial projection of the blocking structure, and the second brush member has a second thin-walled portion, and the second thin-walled portion is outside the axial projection of the blocking structure.

[0147] By providing the blocking structure on the end member, the entanglement of the entangled material is directly entangled in the blocking structure of the end member, and the entanglement of the entangled material on the shaft rod can be effectively prevented.

[0148] In another example, in the cleaning brush 200 shown in FIG. 19, the end member 2200 includes a first side end member 2200′ and a second side end member 2200″, which are fitted into the fitting members 213 at the first end 211 and the second end 212 of the shaft 210, respectively, the shaft 210 being a rigid member, the brush member 230 being directly fitted into the shaft 210, and the cleaning brush 200 being, for example, a hard brush. Optionally, the shaft 210 is a rigid member, and a rigid filler is filled between the brush member 230 and the shaft 210.

[0149] In this example, the first guide portions 2221' of the first side end member 2200' (ie, the end member 2200 in FIG. 14) and the second guide portions 2221'' of the second side end member 2200'' are different in at least one of shape, number, and size.

[0150] In an alternative embodiment, the shape and size of the first guide portions 2221' of the first side end member 2200' are the same as the shape and size of the second guide portions 2221" of the second side end member 2200", the number of first guide portions 2221' of the first side end member 2200' is greater than the number of second guide portions 2221" of the second side end member 2200", and the number of second guide portions 2221" of the second side end member 2200" is not a divisor of the number of first guide portions 2221' of the first side end member 2200'. For example, the number of first guide portions 2221' of the first side end member 2200' is five, and the number of second guide portions 2221" of the second side end member 2200" is two.

[0151] 19 and 20, the first side end member 2200' (i.e., the end member 2200 on the driving side, the left end shown in FIG. 20) is attached to the first end 211 of the shaft 210, and the first side end member 2200' includes a transmission structure 221', which is closer to the outside than the first blocking structure 225', and the end face shape of the transmission structure 221' is polygonal, for example, a regular polygon. The transmission structure 221' is connected to the drive mechanism of the automatic cleaning device.

[0152] In this example, the brush member 230 includes a cylindrical member fitted onto the outer periphery of the shaft, and a plurality of brush members 232 extending from the outer surface of the cylindrical member in a direction away from the cylindrical member 231, and the plurality of brush members 232 are uniformly arranged along the circumferential direction of the cylindrical member.

[0153] In this example, the brush member 232 includes at least one size of first brush member, for example, five sets of brush members, each set of brush members includes two sizes of first brush members, for example, the first brush members are V-shaped or spiral-shaped. The brush member 230 in this example is substantially the same as the brush member 230 in the example of Figure 13, so a description of the same parts will be omitted.

[0154] Specifically, the number of first guide portions 2221′ of the first side end member 2200′ is a divisor of the number of the brush members 232. For example, the number of first guide portions 2221′ is five, and the number of the brush members 232 is a multiple of five, such as five sets, ten sets, etc., and each set includes two brush members or a plurality of brush members.

[0155] The number of the first guide portions 2221' is set as a divisor of the number of sets of the brush members 232, so that when the roller brush is attached to the roller brush frame, the brush members 232 have a specific attachment angle, and the corresponding brush members of the two roller brushes cooperate and interfere with each other.

[0156] In the example of FIG. 19, the number of first guide portions 2221' is five, and the number of sets of the brush members 232 is five.

[0157] As shown in FIG. 20, the second side end member 2200″ is attached to the second end 212 of the shaft 210 (i.e., the driven side end member, the right end shown in FIG. 20), and the second side end member 2200″ includes an assembly structure (specifically, a bearing structure 221″), which is rotatable relative to the shaft 210 and is connected to another structure of the cleaning device (e.g., the main body of the device) by the rotation of the bearing structure 221″ relative to the shaft.

[0158] Specifically, the first side end member 2200' is attached to a first fitting member 213' at a first end 211 within the shaft 210, and the second side end member 2200'' is attached to a second fitting member 213'' at a second end 212 within the shaft 210.

[0159] The shaft and brush member in the example of Fig. 18 are substantially identical in structure to the shaft and brush member in the example of Fig. 13, and therefore a description of the identical parts will be omitted. Furthermore, the first fitting member 213' in Fig. 19 is substantially identical in structure to the fitting member 213 in Fig. 16, and therefore a description of the identical parts will be omitted.

[0160] 19, the first side end member 2200' includes a first guide rod 222', at least one first guide portion 2221', and a first guide shaft 223', where the first guide rod 222' is provided with a plurality of first guide portions 2221', and the first guide portions 2221' are protrusions formed by etching grooves from the outer circumferential surface of the first guide rod 222'. The first guide portion 2221' is formed at one end of the first guide rod 222' remote from the assembly structure 221'.

[0161] As shown in Figures 20 and 21, the second side end member 2200" includes a second guide rod 222", at least one second guide portion 2221" and a second guide shaft 223", where a plurality of second guide portions 2221" are provided on the second guide rod 222".

[0162] Optionally, when the shape of the first guide portion 2221' of the first side end member 2200' and the shape of the second guide portion 2221" of the second side end member 2200" are the same, the number of first guide portions 2221' of the first side end member 2200' and the number of second guide portions 2221" of the second side end member 2200" are different.

[0163] Optionally, the number of first guide portions 2221' of the first side end member 2200' is odd, and the number of second guide portions 2221" of the second side end member 2200" is even. Preferably, the number of first guide portions 2221' of the first side end member 2200' and the number of second guide portions 2221" of the second side end member 2200" are not divisors of each other, so that a side end member with fewer guide portions cannot be mistakenly attached to a fitting member corresponding to a side end member with more guide portions, and so that none of the side end members can be mistakenly attached, achieving maximum foolproofness.

[0164] As shown in Figures 20 and 21, the second end 212 of the shaft 210 includes a second fitting member 213" that fits into the second guide portions 2221" of the second guide rod 222", and the number of the second guide portions 2221" is two. The second guide portions 2221" are protrusions formed by etching grooves on the outer circumferential surface of the second guide rod 222", and are provided at one end of the second guide rod 222" away from the bearing structure 221".

[0165] Specifically, the second engaging member 213″ includes an extension portion 2132″ connected to the main body portion 2130″ and extending outward from the main body portion 2130″, and the outer diameter of the main body portion 2130″ is larger than the outer diameter of the extension portion 2132″. The main body portion 2130″ has a cavity, and the main body portion 2130″ includes an engaging portion 2131″ built into the cavity, and the engaging portion 2131″ is a spiral groove extending along the inner wall of the cavity, the engaging portion 2131″ and the second guide portion 2221″ form a rotational engaging structure, and the guide rod of the second side end member and the engaging member form a rotational engaging mechanism.

[0166] As shown in Figures 20 and 21, the extension 2132" of the second fitting member 213" has a plurality of convex protrusions 21321" uniformly distributed on the outer circumferential surface thereof, and the outer circumferential surface of the extension 2132" has an uneven surface, which forms a fitting structure corresponding to the interior of the axial rod 210 (i.e., the shape of the interior of the axial rod), thereby increasing the contact area between the second fitting member 213" and the interior of the axial rod 210, and allowing the second fitting member 213" to be better fitted into the receiving space of the axial rod 210. This increases the connection strength of the connection structure between the second fitting member 213" and the axial rod 210, making the installation more stable.

[0167] Furthermore, a snap fastening portion 21322'' is provided at one end of the second fitting member 213'' close to the center of the shaft, and the snap fastening portion 21322'' is closer to the center of the shaft than the convex protrusion 21321''. The snap fastening portion 21322'' is, for example, a claw portion, and the snap fastening portion 21322'' and the snap fastening member 2231 (i.e., annular groove portion) of the guide shaft 223 of the second side end member 2200'' form a snap fastening fitting structure.

[0168] In the example of Figure 19, the first side end member 2200' includes an assembly structure (specifically, a transmission structure 221') and a first guide shaft 223', one end of the first guide shaft 223' is inserted into the first guide rod 222', and the other end of the first guide shaft 223' is inserted into a first guide hole of the first end portion 211, and the first guide hole is opened coaxially on the end surface of the first end portion 211.

[0169] The assembly structure 221″ of the second side end member 2200″ and the second guide rod 222″ are separate structures. Specifically, one end of the second guide shaft 223″ passes through the assembly structure (specifically, the bearing structure 221″) of the second side end member 2200″, and the other end of the second guide shaft 223″ is inserted into a second guide hole of the second end portion 212, and the second guide hole is coaxially opened on the end surface of the first end portion 211.

[0170] Optionally, the first side end member 2200′ is provided with a blocking structure 225′, specifically, between the assembly structure (specifically, the transmission structure 221′) and the first guide rod 222′. The second side end member 2200″ is provided with a blocking structure 225″, specifically, between the assembly structure (specifically, the bearing structure 221″) and the second guide rod 222″. The blocking structures on both side end members prevent tangles from excessively extending away from the brush member 230.

[0171] In this example, the outer end surface of the first side end member 2200' is set to have a first polygonal shape corresponding to the number of the brush members 232. Specifically, the end surface of the first side end member 2200' away from the guide rod 222 of the transmission structure 221' has a regular polygonal shape, and the number of sides of the regular polygon is the same as the number of first guide portions 2221' of the first side end member 2200'. At the same time, the number of first guide portions 2221' of the first side end member 2200' is a divisor of the number of the brush members 232.

[0172] In this way, when the roller brush is attached to the roller brush frame, the brush member 232 can have a specific attachment angle. When there are multiple roller brushes with similar structures, this design is very advantageous for forming a blade-to-blade fit between the multiple roller brushes, and is particularly suitable when the blades of both roller brushes need to be aligned, allowing the blades to be aligned to achieve synchronous operation, interference, or intertwining in a predetermined position, thereby achieving different cleaning effects.

[0173] Compared with the prior art, the cleaning brush of the present disclosure forms a rotational fitting structure by the guide portion of the guide rod of the end member and the fitting member inside the shaft, which is fitted into the snap-fit ​​fitting structure formed by the guide shaft and the fitting member, thereby achieving a more efficient guide installation and a more efficient foolproof installation structure, further improving the ease of installation of the end member and further improving the stability of the installation structure.

[0174] Furthermore, by providing a blocking structure on the end member, the entangled material is directly entangled in the blocking structure of the end member, and the entanglement of the entangled material on the shaft rod can be effectively prevented.

[0175] In related technology, automatic cleaning devices, such as sweeping robots, need to discharge a large amount of dirt in a short period of time when performing dust collection operations. As a result, larger particles of dirt can get caught between the two roller brushes, leading to dust collection failure and requiring frequent manual cleaning by the user, which impacts the user experience. Therefore, how to prevent dirt clogging during dust collection operations without affecting the cleaning performance of the roller brushes has become a technical issue that needs to be resolved as soon as possible.

[0176] The present disclosure provides a roller brush and an automatic cleaning device, the roller brush including a shaft and a brush member detachably attached to the shaft, the brush member including a cylindrical member fitted onto the shaft so that the cylindrical member and the shaft are coaxial, and a first brush member extending from the outer surface of the cylindrical member in a direction away from the cylindrical member, the first brush member inclined in a first rotation direction around the cylindrical member, and a one-way blocking structure provided at an end of the first brush member close to the cylindrical member, such that the first brush member is easily deformed in a direction opposite to the first rotation direction but is difficult to deform in the first rotation direction. The roller brush and automatic cleaning device provided by the present disclosure have a one-way blocking structure at the end of the first brush member close to the cylindrical member, so that the first brush member is easily deformed in the direction opposite to the first rotation direction but is not easily deformed in the first rotation direction. When the automatic cleaning device is cleaning normally, the first brush member can provide a powerful cleaning action and is not easily toppled or deformed in the first rotation direction. When collecting dust, the first brush member is easily deformed in the direction opposite to the first rotation direction, which prevents large particles of dirt from getting caught during dust collection, improves cleaning efficiency, and provides a better user experience.

[0177] Selected embodiments of the present disclosure will now be described in detail in conjunction with the accompanying drawings.

[0178] The roller brush provided by the embodiments of the present disclosure can be adapted to various automatic cleaning devices. As an example, FIG. 1 is a structural schematic diagram illustrating an exemplary automatic cleaning device, and the devices to which the roller brush provided by the present embodiment can be adapted are not limited to this.

[0179] 22 and 23, Fig. 22 is a structural schematic diagram of a roller brush provided according to some embodiments of the present disclosure, and Fig. 23 is a cross-sectional structural schematic diagram of the roller brush in Fig. 22. As shown in the figures, in some embodiments, the roller brush 100 includes a shaft 10 and a brush member 20, where the brush member 20 is mounted on the shaft 10.

[0180] The shaft 10 is a rod-like structure, for example, an elongated cylindrical structure. Both ends of the rod-like structure are directly or removably attached to the bottom of the main body of the automatic cleaning device via connecting members. In some embodiments, the shaft 10, together with the brush member 20 mounted on the shaft 10, is removably attached to an elongated groove structure in the bottom of the main body, and the elongated groove structure extends along the transverse axis Y.

[0181] The axis of the shaft 10 is regarded as the rotation axis of the roller brush 100. After the roller brush 100 is installed in the main body of an automatic cleaning device, a drive system on the main body can drive the shaft 10 to rotate, and the rotation direction can be clockwise or counterclockwise. When the shaft 10 rotates, other assemblies mounted on the shaft 10, such as the brush member 20, can also rotate together to achieve cleaning purposes.

[0182] The brush member 20 is mounted on the shaft 10, and in some specific embodiments, the brush member 20 is removably mounted on the shaft 10, facilitating routine cleaning and maintenance of the brush member 20.

[0183] The brush member 20 further includes a cylindrical member 23 and at least one first brush member 21 .

[0184] The cylindrical member 23 is fitted onto the shaft 10 so that the cylindrical member 23 and the shaft 10 are coaxial. The cylindrical member 23 is an elongated tubular structure, and the length of the cylindrical member 23 is substantially the same as the length of the shaft 10. The cylindrical member 23 is fitted closely onto the shaft 10, and the inner diameter of the cylindrical member 23 is substantially equal to or slightly smaller than the diameter of the shaft 10, so that the shaft 10 and the cylindrical member 23 do not move relative to each other during rotation. The cylindrical member 23 may be a flexible or rigid member.

[0185] The first brush member 21 extends from the outer surface of the cylindrical member 23 in a direction away from the cylindrical member 23. In some embodiments, the first brush member 21 tumbles in a first rotational direction in the circumferential direction of the cylindrical member 23. FIG. 24 shows an included angle α between the first brush member 21 and the tangential direction of the cylindrical member 23, where α is less than 90°. For example, in some embodiments, the value of α ranges from 45° to 85°. By configuring the first brush member 21 to tumble in the first rotational direction in the circumferential direction of the cylindrical member 23, a certain included angle is formed between the first brush member 21 and the cleaning surface (e.g., floor), which makes it easier to remove dirt on the cleaning surface during the cleaning process and improves cleaning performance.

[0186] In some embodiments, the roller brush 100 further includes caps 30 provided at both ends of the shaft 10, and the roller brush 100 is attached to an elongated groove structure at the bottom of the main body of the automatic cleaning device via an attachment member spaced from the shaft 10 side of the caps 30.

[0187] In some embodiments, the first brush member 21 extends from one end of the cylindrical member 23 to the other end of the cylindrical member 23. In some embodiments, the extension direction of the first brush member 21 forms a certain included angle with the axis of the shaft 10. For example, the first brush member 21 is spirally disposed on the outer surface of the cylindrical member 23, which increases the number of contact points between the first brush member 21 and the cleaning surface, thereby achieving more thorough contact between the first brush member 21 and the cleaning surface, making it easier to carry away dirt on the cleaning surface, and improving cleaning performance.

[0188] In some embodiments, a one-way blocking structure is provided at the end of the first brush member 21 near the cylindrical member 23. The one-way blocking structure allows the first brush member 21 to easily deform in the direction opposite to the first rotation direction but to be less deformed in the first rotation direction. That is, the deformation of the first brush member 21 when it rotates in the first rotation direction is smaller than the deformation when it rotates in the direction opposite to the first rotation direction. Typically, the first rotation direction is the direction in which the brush member rotates when the cleaning device performs a cleaning operation, and the direction opposite to the first rotation direction is the direction in which the brush member rotates when the cleaning device performs a dust collection operation. By providing the one-way blocking structure, the first brush member 21 provides a strong cleaning effect and is less likely to tip over and deform in the first rotation direction when the cleaning device is performing normal cleaning, but is easily deformed in the direction opposite to the first rotation direction when collecting dust, thereby preventing clogging with large particles of dirt during dust collection.

[0189] 24, in some embodiments, the one-way blocking structure includes a support member 2111, which is used to block deformation of the first brush member 21 in the first rotation direction. Specifically, the support member 2111 is provided at an end of the first brush member 21 that is closer to the cylindrical member 23 and is located on the first rotation direction side.

[0190] As shown in FIG. 24, in some embodiments, the first brush member 21 has a first end and a second end, the first end being used to contact the surface to be cleaned during operation of the automatic cleaning device, and the thickness of the second end being smaller than the thickness of the first end, for example, the second end having a first thin portion relative to the first end, and the arrangement direction of the second end of the first thin portion being arranged in substantially the same direction as the inclination direction of the first brush member relative to the first roller brush radial direction.

[0191] In some embodiments, as can be seen with reference to FIG. 24 , the second brush member also has a first end and a second end, the first end of the second brush member is used to contact the surface to be cleaned during operation of the automatic cleaning device, and the thickness of the second end of the second brush member is smaller than the thickness of the first end of the second brush member, for example, the second end of the second brush member has a second thinner portion relative to the first end of the second brush member, and the arrangement direction of the second thinner portion of the second end of the second brush member is arranged in a direction substantially opposite to the inclination direction of the second brush member relative to the first roller brush radial direction.

[0192] In some embodiments, the second end of the second brush member on the second thinned portion is arranged in a direction opposite to the second end of the first brush member on the first thinned portion.

[0193] In some embodiments, the thickness of the end of the first brush member 21 close to the cylindrical member 23 is less than a predetermined threshold, and the first brush member 21 tends to deform in both the first rotation direction and the direction opposite to the first rotation direction. Specifically, in some embodiments, a slit 216 is provided between the support member 2111 and the end of the first brush member 21 close to the cylindrical member 23, and the thickness of the end of the first brush member 21 close to the cylindrical member 23 is less than a predetermined threshold. When the first brush member 21 tends to deform in the first rotation direction, the support member 2111 supports the end of the first brush member 21 close to the cylindrical member, and the gap width of the slit 216 becomes smaller. When the first brush member 21 tends to deform in the direction opposite to the first rotation direction, the end of the first brush member 21 close to the cylindrical member 23 moves away from the support member 2111, and the gap width of the slit 216 becomes larger. By providing the slits 216, a certain gap is formed between the first brush member 21 and the support member 2111, and the first brush member 21 has a certain degree of freedom in the first rotation direction and can deform appropriately to adapt to different cleaning surfaces. In actual cleaning work, the gap width of the slits 216 can be adjusted according to the cleaning surface, and the degree of deformation of the first brush member 21 in the first rotation direction can be adjusted to some extent to adapt to different cleaning surfaces.

[0194] In some embodiments, the first brush member 21 has an end portion close to the cylindrical member 23, and the support member 2111 has an inclined surface facing the end portion. Furthermore, the inclination angle β of the inclined surface relative to the circumferential tangent surface of the cylindrical member 23 is less than the inclination angle α of the first brush member 21 relative to the circumferential tangent surface of the cylindrical member 23. The specific angles of the two can be adjusted according to the actual situation, and the first brush member 21 has a certain degree of freedom in the first rotation direction and can be appropriately deformed to adapt to different cleaning surfaces. In actual cleaning work, the inclination angles α and β can be adjusted according to the cleaning surface, and the degree of deformation of the first brush member 21 in the first rotation direction can be adjusted to some extent to adapt to different cleaning surfaces.

[0195] The support member 2111 extends along the first brush member 21 close to the end of the cylindrical member 23. In some embodiments, the support member 2111 has a continuous structure, i.e., the support member 2111 extends continuously along the end of the first brush member 21 close to the cylindrical member 23, and extends along one end of the cylindrical member 23 to the other end of the cylindrical member 23. In other embodiments, referring to FIG. 25 , the support member 2111 has an intermittent structure, i.e., the support member 2111 is discretely disposed at the end close to the cylindrical member 23. When the support member 2111 has an intermittent structure, it is possible to save material and reduce the overall weight of the first brush member 21, and the intermittent structure of the support member 2111 can reduce dirt retention due to gaps between the first brush member 21 and the support member 2111.

[0196] Referring to FIG. 26 , in some embodiments, the one-way blocking structure includes a cut slit, for example, a cut slit 215 provided at an end of the first brush member 21 near the cylindrical member 23 on the first rotational direction side. When the first brush member 21 tends to deform in the first rotational direction, the cut slit 215 contracts to prevent the first brush member 21 from deforming in the first rotational direction. When the first brush member 21 tends to deform in the direction opposite to the first rotational direction, the cut slit 215 expands to allow the first brush member 21 to deform in the direction opposite to the first rotational direction. By providing the cut slit 215 in the first brush member 21, the deformation parameters of the first brush member 21 in the direction opposite to the first rotational direction are changed, so that the first brush member 21 is more likely to deform in the direction opposite to the first rotational direction but less likely to deform in the first rotational direction. Furthermore, the process of providing the cut slit 215 in the first brush member 21 is simple, which facilitates popularization and application.

[0197] Furthermore, the inclination angle of the cut slits 215 relative to the circumferential tangent surface of the cylindrical member 23 is less than the inclination angle of the first brush member 21 relative to the circumferential tangent surface of the cylindrical member 23. By providing different inclination angles, the first brush member 21 has a certain degree of freedom in the first rotation direction and can deform appropriately to adapt to different cleaning surfaces. In actual cleaning work, the inclination angle α and the inclination angle of the cut slits 215 relative to the circumferential tangent surface of the cylindrical member 23 can be adjusted depending on the cleaning surface, and the degree of deformation of the first brush member 21 in the first rotation direction can be adjusted to some extent to adapt to different cleaning surfaces.

[0198] In some embodiments, protruding points 213 are provided on the surface of the first brush member 21. In some embodiments, a plurality of protruding points 213 are provided, and the plurality of protruding points 213 are arranged along the extension direction of the first brush member 21, and the protruding points 213 are located away from the cylindrical member 23 and closer to the cleaning surface. Providing the protruding points 213 increases the contact area between the first brush member 21 and dirt, improving the ability of the first brush member 21 to carry dirt from the cleaning surface and improving the cleaning effect of the first brush member 21.

[0199] As can be understood, the number of the first brush members 21 may be plural, and the plural first brush members 21 are uniformly distributed in the circumferential direction of the cylindrical member 23. When performing a cleaning operation, the plural first brush members 21 can work together to increase the contact area between the brush members and the cleaning surface, thereby improving cleaning efficiency.

[0200] In some embodiments, the brush member 20 further includes a second brush member 22. The second brush member 22 extends from the outer surface of the cylindrical member 23 in a direction away from the cylindrical member 23. In some embodiments, the second brush member 22 may rotate in a first rotation direction around the circumference of the cylindrical member 23, and the rotation angle may range from 45° to 85°. Since the second brush member 22 rotates in the first rotation direction around the circumference of the cylindrical member 23, a certain angle is formed between the second brush member 22 and the cleaning surface, which makes it easier to remove dirt on the cleaning surface during the cleaning process and improves cleaning performance.

[0201] In some embodiments, the second brush member 22 extends from one end of the cylindrical member 23 to the other end of the cylindrical member 23. In some embodiments, the extension direction of the second brush member 22 forms a certain included angle with the axis of the shaft 10. For example, the second brush member 22 is spirally disposed on the outer surface of the cylindrical member 23, which increases the number of contact points between the second brush member 22 and the cleaning surface and ensures more sufficient contact between the second brush member 22 and the cleaning surface, making it easier to carry away dirt on the cleaning surface and improving cleaning performance.

[0202] As can be understood, the number of the second brush members 22 may be plural, and the plural second brush members 22 may be uniformly distributed in the circumferential direction of the cylindrical member 23. Furthermore, the first brush members 21 and the second brush members 22 are alternately and uniformly arranged in the circumferential direction of the cylindrical member 23. For example, the brush members 20 of the roller brush 100 include 10 brush members, five of which are first brush members 21 and five of which are second brush members 22, and the first brush members 21 and the second brush members 22 are alternately and uniformly arranged in the circumferential direction of the cylindrical member 23.

[0203] In some embodiments, the length of the second brush member 22 extending away from the cylindrical member 23 is greater than the length of the first brush member 21 extending away from the cylindrical member 23, and the thickness of the brush member body of the second brush member 22 is less than the thickness of the brush member body of the first brush member 21. That is, the first brush member 21 is relatively short and thick, and the second brush member 22 is relatively long and thin. The first brush element 21 exerts a powerful cleaning force when cleaning larger debris such as fruit shells and particles. When cleaning flat, hard surfaces such as tiles or wooden floors, the first brush element 21 does not come into contact with the surface to be cleaned. The second brush element 22, when cleaning flat, hard surfaces such as tiles or wooden floors, comes into contact with the floor, striking and picking up the debris to be cleaned, such as dust and hair, which is then sucked into the dust box. The contact force between the second brush element 22 and the floor is small, so noise is low during daily cleaning. When cleaning a carpet of a certain thickness, the first brush element 21 and the second brush element 22 are in contact with the carpet surface. In this case, the relatively thick first brush element 21 plays an important role by striking and removing the dust and hair hidden in the carpet, thereby improving the cleaning effect.

[0204] In some embodiments, the thickness of the second brush member 22 at the end away from the cylindrical member 23 is greater than the thickness of the second brush member 22 at the end closer to the cylindrical member 23. The second brush member 22 at the end closer to the cylindrical member 23 has better deformation parameters, allowing the second brush member 22 to deform according to different cleaning tasks.

[0205] In some embodiments, the cylindrical member 23 is incompressible after being fitted onto the shaft 10. That is, the roller brush 100 has a hard brush structure. The shaft 10 is, for example, a hard rod member, and the cylindrical member 23 is incompressible after being fitted onto the hard shaft 10. That is, at least a portion of the surface of the brush member supported by the shaft is incompressible, for example, the entire surface of the brush member supported by the shaft is incompressible.

[0206] In some embodiments, the automatic cleaning device includes a first roller brush and a second roller brush, the first shaft member having a support surface that contacts and supports the first brush member, and at least a portion of the support surface of the first shaft member being incompressible, for example, the entire support surface of the first shaft member being incompressible.

[0207] In some embodiments, the second roller brush includes a second shaft member and a second brush member, the second shaft member having a support surface that contacts and supports the second brush member, and at least a portion of the support surface of the second shaft member is incompressible, for example, the entire support surface of the second shaft member is incompressible.

[0208] In some embodiments, the support surface at the axial end of the first shaft member is compressible and the remaining portion is incompressible.

[0209] In some embodiments, the bearing surface at the axial end of the second shaft member is compressible and the remaining portion is incompressible.

[0210] In some embodiments, the support surface at the axial center of the first shaft member is compressible, and the remaining portion is incompressible.

[0211] In some embodiments, the support surface at the axial center of the second shaft member is compressible, and the remaining portion is incompressible.

[0212] In some embodiments, the area of ​​the compressible portion of the support surface of the first shaft member is smaller than the area of ​​the non-compressible portion.

[0213] In some embodiments, the area of ​​the compressible portion of the support surface of the second axial member is smaller than the area of ​​the non-compressible portion.

[0214] In some embodiments, the support surface within at least a portion of the axial length range of the first shaft member simultaneously has a compressible portion and an incompressible portion in the circumferential direction.

[0215] In some embodiments, the support surface within at least a portion of the axial length range of the second shaft member simultaneously has a compressible portion and an incompressible portion in the circumferential direction.

[0216] In some embodiments, the support surface of the first shaft member has an axial length that is smaller than the length of the first brush member.

[0217] In some embodiments, the axial length of the support surface of the second shaft member is shorter than that of the second brush member. In some embodiments, the automatic cleaning device simultaneously has two roller brushes, one of which has a compressible cylindrical member and the other of which has an incompressible cylindrical member. If necessary, at least one of the two roller brushes may be provided with a one-way blocking structure. In some embodiments, only the roller brush whose cylindrical member is incompressible is provided with such a structure, and the compressible roller brush is somewhat weaker in terms of the need to solve the correspondence problem. Of course, the blocking structure can be selectively used depending on the specific material of the compressible roller brush, especially if the material has a hard or relatively weak compressibility.

[0218] The roller brush and automatic cleaning device provided by the present disclosure have a one-way blocking structure at the end of the first brush member close to the cylindrical member, so that the first brush member is easily deformed in the direction opposite to the first rotation direction but is difficult to deform in the first rotation direction. When the automatic cleaning device is cleaning normally, the first brush member provides a strong cleaning effect and is difficult to tip over and deform in the first rotation direction. When collecting dust, the first brush member is easily deformed in the direction opposite to the first rotation direction, which prevents clogging with large particles of dirt when collecting dust, improves cleaning efficiency, and provides a better user experience.

[0219] In the related art, there is a double roller brush model for automatic cleaning devices, such as sweeping robots. In this double roller brush model, two roller brushes, one in front and one in back, improve the cleaning ability of the automatic cleaning device. However, the blades of the two roller brushes do not interfere with each other, and a certain gap always exists between the two roller brushes, allowing dust on the operating surface to be sucked into the air duct. However, there is a need to further improve the dust suction effect of the automatic cleaning device.

[0220] The present disclosure provides an automatic cleaning device, including: a moving platform configured to move on an operating surface; and a cleaning module assembled to the moving platform and configured to clean the operating surface, the cleaning module including a first roller brush and a second roller brush, the first roller brush being arranged along a first direction perpendicular to an axis of the moving platform, the first roller brush including a first long brush member, the second roller brush being arranged alongside the first roller brush, the second roller brush including a second long brush member, and an air duct, the air duct being arranged on a side of the first roller brush and the second roller brush away from the operating surface and configured to guide the collection of dust, wherein when the automatic cleaning device performs a cleaning operation, the first long brush member and the second long brush member interfere with each other to form an interference area, the interference area moving dynamically along a predetermined direction, and an air duct inlet of the air duct being arranged downstream of the predetermined direction.

[0221] When the automatic cleaning device performs cleaning operations, the first long brush member of the first roller brush and the second long brush member of the second roller brush of the cleaning module interfere with each other to form an interference area, sealing off at least a portion of the air intake passage between the two roller brushes. This reduces the opening size of the air intake passage, increases dust suction pressure, and achieves a better dust suction effect. The interference area moves dynamically in a predetermined direction, and the area of ​​the air intake passage with the greatest suction force between the two roller brushes also moves dynamically in the predetermined direction. This increases the likelihood that dust at all positions on the operating surface being cleaned by the roller brushes will be sucked into the air duct and, ultimately, the dust box with increasing suction force. The air duct inlet of the air duct is located downstream in the predetermined direction, allowing dust to be easily sucked into the dust box through the air duct.

[0222] Selected embodiments of the present disclosure will now be described in detail in conjunction with the accompanying drawings.

[0223] 27 is a structural schematic diagram of a cleaning module provided by some embodiments of the present disclosure from another perspective, FIG. 28 is a cross-sectional structural schematic diagram of the cleaning module provided by some embodiments of the present disclosure, and FIG. 29 is a structural schematic diagram of a first roller brush and a second roller brush provided by some embodiments of the present disclosure. Some embodiments of the present disclosure provide an automatic cleaning device, which includes a moving platform 1000 and a cleaning module 5000. The moving platform 1000 is configured to automatically move on an operation surface, and the cleaning module 5000 is assembled to the moving platform 1000 and configured to clean the operation surface.

[0224] 27 to 29, the cleaning module 5000 includes a first roller brush 100, a second roller brush 200, and an air duct 5400. The first roller brush 100 and the second roller brush 200 constitute the roller brush 5300.

[0225] The first roller brush 100, for example, is a front brush and extends in a first direction perpendicular to the axis of the moving platform. The axis of the moving platform is, for example, the longitudinal axis X, and the first direction is, for example, the extension direction of the lateral axis Y. The first roller brush 100 includes a first long brush member 131, i.e., a first long blade. The long blade is relatively long and thin. When cleaning flat, hard surfaces such as tiles or hardwood floors, the long blade contacts the floor surface, striking and winding up dirt, dust, hair, and other debris to be cleaned, which can then be sucked into a dust box. The contact force between the long blade and the floor surface is small, resulting in low noise during routine cleaning.

[0226] The second roller brush 200, for example a rear brush, is arranged alongside the first roller brush 100 and along a first direction perpendicular to the moving platform axis, and the second roller brush 200 includes a second long brush member 231, i.e., a second long blade.

[0227] The air duct 5400 is provided on the side of the first roller brush 100 and the second roller brush 200 away from the operation surface, and is configured to guide the collection of dust, for example, to guide the dust to be collected in a dust box.

[0228] When the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 roll opposite each other to perform the cleaning operation. Specifically, the first roller brush 100 rotates in a first rotation direction R1, which may be, for example, a counterclockwise direction, and the second roller brush 200 rotates in a second rotation direction R2, which may be, for example, a clockwise direction. The first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 come into contact with the floor surface to strike and wind up debris to be cleaned, such as dust and hair.

[0229] When the automatic cleaning device performs a cleaning operation, the first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 interfere with each other to form an interference area. For example, at least a portion of the contour formed by the locus of the outer end of the first brush member interferes with that formed by the locus of the outer end of the second brush member. In some embodiments, when the first roller brush and the second roller brush rotate, the first brush member and the second brush member do not contact each other, or the first brush member and the second brush member cross and contact each other. Specifically, as shown in FIGS. 28 and 29 , the first long brush member 131 and the second long brush member 231 interfere with each other between the first roller brush 100 and the second roller brush 200 to form an interference area. At least a portion of the air intake passage between the two roller brushes is sealed, reducing the opening size of the air intake passage, increasing the dust suction pressure, and achieving a better dust suction effect.

[0230] The first and second brush members rotate together with the first and second roller brushes to a position where they are close to each other, and the point of proximity between the first and second brush members moves dynamically in a predetermined direction as the roller brushes rotate, and the interference area moves dynamically along a predetermined direction, for example, along the extension direction of the first and second roller brushes 100 and 200, so that dust at all positions on the operating surface cleaned by the roller brushes is likely to be sucked into the air duct and ultimately the dust box with greater suction force. The air duct inlet 5410 of the air duct 5400 is located downstream in the predetermined direction, so that dust can be easily sucked into the dust box through the air duct.

[0231] In some embodiments, as shown in Figures 27 to 29, the first roller brush 100 includes a first axial rod 110 and a first brush member 130. The first axial rod 110 may be a rod-like structure, such as an elongated cylindrical structure. Both ends of the rod-like structure are removably attached to the bottom of the device body of the automatic cleaning device, either directly or via connecting members. In some embodiments, the first axial rod 110, together with the first brush member 130 provided on the first axial rod 110, is removably attached to an elongated groove structure in the bottom of the device body, and the elongated groove structure extends along the lateral axis Y.

[0232] The axis of the first shaft 110 is regarded as the rotation axis of the first roller brush 100. After the first roller brush 100 is installed in the main body of an automatic cleaning device, a drive system on the main body can drive the first shaft 110 to rotate, either clockwise or counterclockwise. When the first shaft 110 rotates, other assemblies on the first shaft 110, such as the first brush member 130, can also rotate together to achieve cleaning purposes.

[0233] The first brush member 130 is removably attached to the first shaft 110 to facilitate replacement of the first brush member 130 as a consumable item. The first brush member 130 includes a first cylindrical member 133 and a first elongated brush member 131.

[0234] The first cylindrical member 133 is fitted onto the first axial rod 110 so that the first cylindrical member 130 and the first axial rod 110 are coaxial. The first cylindrical member 130 may be an elongated tubular structure, and the length of the first cylindrical member 130 is substantially the same as the length of the first axial rod 110. The first cylindrical member 130 is fitted closely onto the first axial rod 110, and the inner diameter of the first cylindrical member 130 is substantially equal to or slightly smaller than the diameter of the first axial rod 110, so that the first axial rod 110 and the first cylindrical member 130 do not move relative to each other during rotation. The first cylindrical member 130 may be, for example, a flexible member.

[0235] The first elongated brush member 131, i.e., first elongated blade, extends from the outer surface of the first cylindrical member 130 in a direction away from the first cylindrical member. In some embodiments, the first elongated brush member 131 and the first cylindrical member 130 are of unitary construction, for example, molded integrally from the same material.

[0236] The second roller brush 200 includes a second axial rod 210 and a second brush member 230. The second axial rod 210 may be a rod-like structure, such as an elongated cylindrical structure. Both ends of the rod-like structure may be removably attached to the bottom of the main body of the automatic cleaning device, either directly or via a connecting member. In some embodiments, the second axial rod 210, together with the second brush member 230 mounted on the second axial rod 210, is removably attached to an elongated groove structure in the bottom of the main body, and the elongated groove structure extends along the transverse axis Y.

[0237] The axis of the second shaft 210 is regarded as the rotation axis of the second roller brush 200. After the second roller brush 200 is installed in the main body of the automatic cleaning device, a drive system on the main body drives the second shaft 210 to rotate, either clockwise or counterclockwise. When the second shaft 210 rotates, other assemblies mounted on the second shaft 210, such as the second brush member 230, rotate together to achieve cleaning.

[0238] The second brush member 230 is detachably attached to the second shaft 210, which makes it easy to replace the second brush member 230 as a consumable part. The second brush member 230 includes a second cylindrical member 233 and a second elongated brush member 231.

[0239] The second cylindrical member 233 is fitted onto the second axial rod 210 so that the second cylindrical member 230 and the second axial rod 210 are coaxial. The second cylindrical member 230 may be an elongated tubular structure, and the length of the second cylindrical member 230 is substantially the same as the length of the second axial rod 210. The second cylindrical member 230 is fitted closely onto the second axial rod 210, and the inner diameter of the second cylindrical member 230 is substantially equal to or slightly smaller than the diameter of the second axial rod 210, so that the second axial rod 210 and the second cylindrical member 230 do not move relative to each other during rotation. The second cylindrical member 230 may be, for example, a flexible member.

[0240] The second elongated brush member 231, i.e., the second elongated blade, extends from the outer surface of the second cylindrical member 230 in a direction away from the second cylindrical member. In some embodiments, the second elongated brush member 231 and the second cylindrical member 230 are of unitary construction, e.g., molded integrally from the same material.

[0241] 27 to 29, the first long brush members 131 and the second long brush members 231 are each plural in number, and the first long brush members 131 correspond one-to-one to the second long brush members 231, with each first long brush member 131 interfering with its corresponding second long brush member 231. Specifically, as shown in FIGS. 28 and 29, the first roller brush 100 includes five first long brush members 131, and the second roller brush 200 includes five second long brush members 231. Each first long brush member 131 and its corresponding second long brush member 231 rotates with the first roller brush 100 and the second roller brush 200 to positions close to each other, and when positioned between the first roller brush 100 and the second roller brush 200, for example, they interfere with each other. The first long brush member 131 and the corresponding second long brush member 231 begin to interfere with each other, for example, at one end, and as they further rotate together with the first roller brush 100 and the second roller brush 200, their interference area moves from one end to the other. As the first roller brush 100 and the second roller brush 200 continue to rotate, they disengage from the interference, and this process is repeated.

[0242] 27 to 29, in some embodiments, when the automatic cleaning device performs a cleaning operation, at least one pair of corresponding first and second long brush members 131 and 231 interfere with each other at any given time. Specifically, FIG. 29 shows a case where two pairs of first and second long brush members 131 and 231 interfere with each other at the same time. D1 indicates that one end of one pair of the first and second long brush members 131 and 231 interferes with each other, and D2 indicates that the other end of the other pair of the first and second long brush members 131 and 231 interferes with each other. In this way, the area of ​​the interference region can be appropriately increased, the opening size of the intake passage can be further reduced, the dust suction pressure can be increased, and a better dust suction effect can be achieved.

[0243] In some embodiments, as shown in Figures 27 to 29, the plurality of first long brush members 131 are uniformly distributed in the circumferential direction of the first cylindrical member 133. The plurality of second long brush members 231 are uniformly distributed in the circumferential direction of the second cylindrical member 233. For example, the number of the plurality of first long brush members 131 is five, and one first long brush member 131 is provided every 72 degrees in the circumferential direction of the first cylindrical member 133. For example, the number of the plurality of second long brush members 231 is five, and one second long brush member 131 is provided every 72 degrees in the circumferential direction of the second cylindrical member 233.

[0244] In some embodiments, the first long brush members 131 extend from one end to the other end of the first cylindrical member 133 and are not aligned along the axis of the first cylindrical member 133 but are instead arranged to swivel around the outer circumferential surface of the first cylindrical member 133, e.g., spirally. Each first long brush member 131 covers a first predetermined angle around the circumference of the first cylindrical member 133, the first predetermined angle being equal to or greater than 360° / N, where N is the number of first long brush members and N is a positive integer greater than or equal to 2. The second long brush members 231 extend from one end to the other end of the second cylindrical member 233 and are not aligned along the axis of the second cylindrical member 233 but are instead arranged to swivel around the outer circumferential surface of the second cylindrical member 233, e.g., spirally. Each second long brush member 231 covers a second predetermined angle in the circumferential direction of the second cylindrical member 233, and the second predetermined angle is equal to or greater than 360° / N, where N is the number of second long brush members, and N is a positive integer and N≧2.

[0245] In this way, at least two adjacent pairs of first long brush members 131 and second long brush members 231 can be simultaneously in an interference state, and at least a portion of the intake passage between the two roller brushes is sealed, reducing the opening size of the intake passage and increasing the dust suction pressure, resulting in a better dust suction effect.

[0246] 27 to 29, when the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 rotate opposite to each other, with the first roller brush 100 rotating in a first rotation direction R1, which may be, for example, a counterclockwise direction, and the second roller brush 200 rotating in a second rotation direction R2, which is opposite to the first rotation direction R1, which may be, for example, a clockwise direction. In this manner, the first roller brush 100 and the second roller brush 200 push out debris such as dust struck by the first long brush member 131 and the second long brush member 231 between the first roller brush 100 and the second roller brush 200, allowing the debris to easily enter the dust box via the air duct 5400.

[0247] 27 to 29, the first long brush member 131 extends spirally on the outer surface of the first cylindrical member 133 from one end of the first cylindrical member 133 to the other end of the first cylindrical member 133 along a second rotation direction R2. The second rotation direction R2 is, for example, a clockwise direction. The second long brush member 231 extends spirally on the outer surface of the second cylindrical member 233 from one end of the second cylindrical member 233 to the other end of the second cylindrical member 233 along a first rotation direction R1, and the first rotation direction R1 is, for example, a counterclockwise direction.

[0248] In this way, for any pair of first long brush member 131 and second long brush member 231, the interference area between the first long brush member 131 and the corresponding second long brush member 231 is configured to dynamically move from one end of the combination formed by the first roller brush 100 and the second roller brush 200 to the other end of the combination, for example, along the horizontal axis Y in Figure 28.

[0249] Specifically, any first long brush member 131 and its corresponding second long brush member 231 rotate together with the first roller brush 100 and the second roller brush 200 until they are close to each other, for example, when they are positioned between the first roller brush 100 and the second roller brush 200, they interfere with each other. The first long brush member 131 and its corresponding second long brush member 231 begin to interfere with each other at one end of the combined assembly consisting of the first roller brush 100 and the second roller brush 200, as shown at D1 in FIG. 29. As the first roller brush 100 continues to rotate together with the second roller brush 200, the interference area between them gradually moves from the lateral axis Y in FIG. 29 to the other end of the combined assembly consisting of the first roller brush 100 and the second roller brush 200, as shown at D2 in FIG. 29. As the first roller brush 100 and the second roller brush 200 continue to rotate, they move out of interference, and this process is repeated.

[0250] In some embodiments, as shown in Figures 27 to 29, the first long brush member 131 falls in a second rotation direction R2 in the circumferential direction of the first cylindrical member 133, and the second long brush member 231 falls in a first rotation direction R1 in the circumferential direction of the second cylindrical member 233.

[0251] 30 is a structural schematic diagram of a first roller brush and a second roller brush provided by some embodiments of the present disclosure. As shown in FIG. 30, in some embodiments, the blade structure of the first roller brush and the second roller brush is different from the blade structure of the embodiment shown in FIGS. 28-29.

[0252] The first long brush members 131 extend spirally on the outer surface of the first cylindrical member 133 from one end of the first cylindrical member 131 to the center of the first cylindrical member 133 in the second rotation direction R2, and then extend spirally in the first rotation direction R1 to the other end of the first cylindrical member 133. The first long brush members 131 are distributed, for example, in a V-shape on the outer peripheral surface of the first cylindrical member 133, and a line connecting both ends of the first long brush members 131 is, for example, parallel to the axis of the first cylindrical member 133. In some embodiments, the number of first long brush members 131 is, for example, four, and they are distributed uniformly around the circumference of the first cylindrical member 133.

[0253] Similarly, the second long brush members 231 extend spirally on the outer surface of the second cylindrical member 233 from one end of the second cylindrical member 233 to the center of the second cylindrical member 233 in a first rotation direction R1, and then extend spirally in a second rotation direction R2 to the other end of the second cylindrical member 233. The second long brush members 231 are distributed, for example, in a V-shape on the outer peripheral surface of the second cylindrical member 233, and the line connecting both ends of the second long brush members 231 is, for example, parallel to the axis of the second cylindrical member 233. In some embodiments, the number of second long brush members 231 is, for example, four, and they are uniformly distributed on the circumferential direction of the second cylindrical member 233.

[0254] As shown in FIG. 30, when the automatic cleaning device performs cleaning operation, the first roller brush 100 and the second roller brush 200 rotate along the first rotation direction R1 and the second rotation direction R2, respectively, and any one of the multiple first long brush members 131 interferes with the corresponding second long brush member 231, reducing the opening size of the intake passage and increasing the dust suction pressure, thereby achieving a better dust suction effect.

[0255] For any pair of a first long brush member 131 and a second long brush member 231, the interference area between the first long brush member 131 and the corresponding second long brush member 231 dynamically moves from both ends of the combination formed by the first roller brush 131 and the second roller brush 231 toward the center of the combination.

[0256] Specifically, any first long brush member 131 and its corresponding second long brush member 231 rotate together with the first roller brush 100 and the second roller brush 200 until they are close to each other, for example, when positioned between the first roller brush 100 and the second roller brush 200, they interfere with each other. For example, the first long brush member 131 and its corresponding second long brush member 231 begin to interfere with each other from both ends of the combination formed by the first roller brush 100 and the second roller brush 200, as shown at D3 and D4 in FIG. 30. As the first roller brush 100 further rotates together with the second roller brush 200, the interference area between them gradually moves along the transverse axis Y in FIG. 30 to the center of the combination formed by the first roller brush 100 and the second roller brush 200, as shown at D5 in FIG. 29. As the first roller brush 100 and the second roller brush 200 further rotate, they move out of interference, and this process is repeated. In this case, the air duct inlet 5410 of the air duct 5400 is located at the center of the combination of the corresponding first roller brush 100 and second roller brush 200, so that dust can be easily sucked into the dust box through the air duct.

[0257] In another embodiment, the interference area between the first long brush member 131 and the corresponding second long brush member 231 is configured to dynamically move from the center of the combination of the first roller brush 100 and the second roller brush 200 toward both ends of the combination. In this case, the air duct inlets 5410 of the air duct 5400 are provided at both ends of the combination of the corresponding first roller brush 100 and second roller brush 200, so that dust can be easily sucked into the dust box through the air duct.

[0258] 27-29, the first roller brush 100 includes a first short brush member 132, i.e., a first short blade, and the first short brush member 132 does not interfere with the second roller brush 200. The second roller brush 200 includes a second short brush member 232, and the second short brush member 232 does not interfere with the first roller brush 100.

[0259] The short blade is relatively short and thick, and can provide powerful cleaning power when cleaning larger debris such as fruit shells and particles. When cleaning flat, hard surfaces such as tiles and hardwood floors, the short blade does not come into contact with the floor. When cleaning carpets of a certain thickness, both the long and short blades come into contact with the carpet surface, and the relatively thick and short blade plays an important role in striking and removing dust and hair hidden in the carpet, improving the cleaning effect.

[0260] In some embodiments, the first brush member 130 includes the first short brush member 132, and the first long brush member 131, first short brush member 132, and first cylindrical member 133 are integrally formed from the same material. The second brush member 230 includes the second short brush member 232, and the second long brush member 231, second short brush member 232, and second cylindrical member 233 are integrally formed from the same material.

[0261] 27 to 29, the first long brush members 131 and the first short brush members 132 are arranged at equal intervals in the circumferential direction of the first roller brush 100, for example, the first long brush members 131 and the first short brush members 132 are arranged at equal and alternate intervals in the circumferential direction of the first cylindrical member 133. The second long brush members 231 and the second short brush members 232 are arranged at equal intervals in the circumferential direction of the second roller brush 200, for example, the second long brush members 231 and the second short brush members 232 are arranged at equal and alternate intervals in the circumferential direction of the second cylindrical member 233.

[0262] In some embodiments, one of the first roller brush 100 and the second roller brush 200 is a hard-core roller brush and the other is a soft-core roller brush. The soft-core roller brush has a large deformation amount and is good at passing large particles of dust, while the hard-core roller brush has a small deformation amount and is good at cleaning.

[0263] In some embodiments, the first long brush member 131 and the first short brush member 132 comprise the first brush member, and the second long brush member 231 and the second short brush member 232 comprise the second brush member.

[0264] In some embodiments, at least one of the first roller brush 100 and the second roller brush 200 may include a short brush member and a long brush member, and if neither the first roller brush 100 nor the second roller brush 200 includes a short brush member, the first long brush member 131 of the first roller brush 100 functions as the first brush member, and the second long brush member 231 of the second roller brush 200 functions as the second brush member, and the first brush member and the second brush member interfere with each other to form an interference area.

[0265] In the related art, there is a double roller brush model for automatic cleaning devices, such as sweeping robots, in which the two roller brushes, front and rear, improve the cleaning ability of the automatic cleaning device, but the blades of the two roller brushes, front and rear, only perform the function of cleaning the surface and cannot clean the cleaning roller brush cavity, the two roller brushes do not interfere with each other, and a certain size gap always exists between the two roller brushes, resulting in low dust collection efficiency.

[0266] The automatic cleaning device provided by the present disclosure includes a moving platform configured to automatically move over an operating surface, and a cleaning module assembled to the moving platform and configured to clean the operating surface, the cleaning module including a first roller brush and a second roller brush, the first roller brush being arranged along a first direction perpendicular to a front-to-rear axis of the moving platform, the first roller brush including a first brush member, the second roller brush being arranged parallel to the first roller brush, the second roller brush including a second brush member, and a roller brush cavity configured to accommodate the first roller brush and the second roller brush, wherein when the first roller brush and the second roller brush rotate along their respective first operating directions, the first brush member and the second brush member interfere with each other, and when the first roller brush and the second roller brush rotate along their respective second operating directions, the amount of interference between the first brush member and the second brush member increases.

[0267] The present disclosure further provides an automatic cleaning device, including: a moving platform configured to automatically move over an operating surface; and a cleaning module assembled to the moving platform and configured to clean the operating surface, the cleaning module including a first roller brush and a second roller brush, the first roller brush being arranged along a first direction perpendicular to a front-to-rear axis of the moving platform, the first roller brush including a first brush member, the second roller brush being arranged alongside the first roller brush, the second roller brush including a second brush member, and a roller brush cavity configured to accommodate the first roller brush and the second roller brush, wherein when the first roller brush and the second roller brush rotate along their respective first operating directions, the first brush member and the second brush member do not interfere with an inner wall of the roller brush cavity, and when the first roller brush and the second roller brush rotate along their respective second operating directions, at least one of the first brush member and the second brush member interferes with an inner wall of the roller brush cavity.

[0268] The present disclosure provides two roller brushes that rotate in opposite directions, so that when the automatic cleaning device performs a cleaning operation, the first and second long brush members do not interfere with each other and do not interfere with the inner wall of the roller brush cavity, and when the automatic cleaning device performs a dust collection operation, the interference between the first and second long brush members increases and the first and second long brush members interfere with the inner wall of the roller brush cavity. The forward and reverse rotations achieve different functions, reducing noise and capturing more dust during the dust collection process, and the reverse rotation can scrape and clean the inner wall of the roller brush cavity, making it convenient to clean the inner wall of the roller brush cavity.

[0269] 27 to 31, the same structure can be referred to the description of the above embodiment and will not be repeated here. The cleaning module 5000 includes a first roller brush 100, a second roller brush 200 and an air duct 5400. The first roller brush 100 and the second roller brush 200 constitute the roller brush 5300. The first roller brush 100 includes a first brush member, which includes a first long brush member 131 and a first short brush member 132, and the second roller brush 200 includes a second brush member, which includes a second long brush member 231 and a second short brush member 232.

[0270] The first roller brush 100, e.g., the front brush, is oriented in a first direction perpendicular to the axis of the moving platform. The axis of the moving platform is, for example, the longitudinal axis X, and the first direction is, for example, the extension direction of the lateral axis Y. The first roller brush 100 includes a first long brush member 131, i.e., a first long blade. The long blade is relatively long and thin. When cleaning flat, hard surfaces such as tiles or hardwood floors, the long blade contacts the floor surface, striking and winding up dirt, dust, hair, and other debris to be cleaned, which can then be sucked into the dust box. The contact force between the long blade and the floor surface is small, and noise is low during routine cleaning.

[0271] A second roller brush 200, e.g., a rear brush, is arranged alongside the first roller brush 100 and along a first direction perpendicular to the moving platform axis, and the second roller brush 200 includes a second long brush member 231, i.e., a second long blade.

[0272] The air duct 5400 is provided on the side of the first roller brush 100 and the second roller brush 200 away from the operation surface, and is configured to collect dust, for example, to guide the dust to be collected in a dust box.

[0273] The roller brush cavity 5210 bulges upward along the top of the roller brush frame 5200, forming a cavity to accommodate the first roller brush 100 and the second roller brush 200. The roller brush cavity 5210 is an accommodation chamber that opens at the bottom and faces the floor. The roller brush cavity 5210 sucks in dirt and dust from the floor through this opening, thereby cleaning the floor. The top of the roller brush cavity 5210 is connected to the air duct 5400 through an air duct port.

[0274] Here, when the automatic cleaning device performs cleaning operations, the first long brush member 131 and the second long brush member 231 interfere with each other, and the first long brush member 131 and the second long brush member 231 do not interfere with the inner wall of the roller brush cavity 5210; when the automatic cleaning device performs dust collection operations, the amount of interference between the first long brush member 131 and the second long brush member 231 increases, and the first long brush member 131 and the second long brush member 231 interfere with the inner wall of the roller brush cavity 5210.

[0275] During actual use, the two roller brushes rotating in opposite directions suck dust into the roller brush cavity 5210, and the two roller brushes come into contact with each other through the long blades. The long blades that make the two roller brushes come into contact with each other during use form an independent volume to suck in dust. This design reduces noise and prevents dust and debris from being thrown out. Other debris and debris are also sucked into the space between the two roller brushes, greatly improving dust collection efficiency.

[0276] 28 , in this embodiment, the cleaning device has two arc-shaped hollow arc surfaces formed at the top of the roller brush cavity 5210. Each hollow arc surface is adjacent to a roller brush without contacting the roller brush. When the automatic cleaning device performs cleaning operations, the roller brushes rotate in opposite directions along the inclination direction of the long blades. Although the first long brush member 131 and the second long brush member 231 interfere with each other, the interference is relatively small, allowing smooth rotation and easy entrapment of dust. When the automatic cleaning device performs dust collection operations, the roller brushes rotate along the inclination direction of the long blades. Due to their flexibility and centrifugal force, the inclination angle of the long blades decreases, for example, until the long blades are substantially perpendicular to the cylindrical member. At this time, the long blades rub or hit the hollow arc surfaces of the roller brush cavity 5210, removing dust from the blades and the hollow arc surfaces, thereby achieving self-cleaning of the roller brush cavity 5210 and the long blades.

[0277] As shown in Figure 28, during normal cleaning, the front and rear brushes are wound inward toward the center, with the corresponding front brush rotating counterclockwise and the rear brush rotating clockwise. The front brush is tilted clockwise and the rear brush is tilted counterclockwise. This configuration ensures that the contact force on the roller brush during cleaning is precisely in the direction of blade deformation. This produces the softest banging noise when it comes into contact with the floor, which is beneficial for noise reduction. As can be seen from the blade tilt direction, when the front brush rotates forward, the blade deforms backward due to the contact force, causing the main brush to deform in a direction that reduces its diameter (the rear brush blade deforms counterclockwise), without rubbing against the inner wall of the roller brush cavity 5210. When the main brush rotates backward, the blade deforms due to the contact force, causing its diameter to increase (the rear brush blade deforms clockwise), rubbing against the inner wall and self-cleaning (the blade rotates at high speed, increasing its diameter due to centrifugal force).

[0278] In some embodiments, the first long brush member 131 has a base portion close to the first cylindrical member 133 and a top portion spaced apart from the first cylindrical member 133, and the thickness of the base portion of the first long brush member is smaller than the thickness of the top portion of the first long brush member, and / or the second long brush member 231 has a base portion close to the second cylindrical member 233 and a top portion spaced apart from the second cylindrical member, and the thickness of the base portion of the second long brush member is smaller than the thickness of the top portion of the second long brush member. In this way, it is ensured that the first long brush member 131 and / or the second long brush member 231 tilt to one side during forward rotation and swing to the other side during reverse rotation, thereby increasing the striking effect with the inner wall of the roller brush cavity 5210.

[0279] In some embodiments, the first long brush member 131 has a first width from the base of the first long brush member to the top of the first long brush member, the first width being greater than the distance between the first roller brush 100 and the inner wall of the roller brush cavity 5210, and / or the second long brush member 231 has a second width from the base of the second long brush member to the top of the second long brush member, the second width being greater than the distance between the second roller brush 200 and the inner wall of the roller brush cavity 5210. This ensures that the first long brush member 131 and the second long brush member 231 are long enough to contact and slam into the inner wall of the roller brush cavity 5210 when the roller brushes are rotating in the reverse direction to collect dust.

[0280] When the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 roll opposite each other to perform the cleaning operation. Specifically, the first roller brush 100 rotates in a first rotation direction R1, which may be, for example, a counterclockwise direction, and the second roller brush 200 rotates in a second rotation direction R2, which may be, for example, a clockwise direction. The first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 come into contact with the floor surface to strike and wind up debris to be cleaned, such as dust and hair.

[0281] When the automatic cleaning device performs a cleaning operation, the first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 interfere with each other to form an interference area. Specifically, as shown in Figures 28 and 29, the first long brush member 131 and the second long brush member 231 interfere with each other between the first roller brush 100 and the second roller brush 200 to form an interference area. At least a portion of the intake passage between the two roller brushes is sealed, reducing the opening size of the intake passage and increasing the dust suction pressure, thereby achieving a better dust suction effect.

[0282] The interference area moves dynamically along a predetermined direction, for example, along the extending direction of the first roller brush 100 and the second roller brush 200, so that dust at all positions on the operating surface cleaned by the roller brushes is likely to be sucked into the air duct and eventually the dust box with greater suction force. The air duct inlet 5410 of the air duct 5400 is located downstream in the predetermined direction, so that dust can be easily sucked into the dust box through the air duct.

[0283] In some embodiments, the first roller brush 100 includes a first axial rod 110 and a first brush member 130. The first axial rod 110 may be a rod-like structure, such as an elongated cylindrical structure. Both ends of the rod-like structure may be removably attached to the bottom of the device body of the automatic cleaning device, either directly or via a connecting member. In some embodiments, the first axial rod 110, together with the first brush member 130 provided on the first axial rod 110, is removably attached to an elongated groove structure in the bottom of the device body, and the elongated groove structure extends along the transverse axis Y.

[0284] The axis of the first shaft 110 is regarded as the rotation axis of the first roller brush 100. After the first roller brush 100 is installed in the main body of the automatic cleaning device, a drive system on the main body drives the first shaft 110 to rotate, either clockwise or counterclockwise. When the first shaft 110 rotates, other assemblies mounted on the first shaft 110, such as the first brush member 130, rotate together to achieve cleaning.

[0285] The first brush member 130 is detachably attached to the first shaft 110, which makes it easy to replace the first brush member 130 as a consumable item. The first brush member 130 includes a first cylindrical member 133 and a first long brush member 131.

[0286] The first cylindrical member 133 is fitted onto the first axial rod 110 so that the first cylindrical member 130 and the first axial rod 110 are coaxial. The first cylindrical member 130 may be an elongated tubular structure, and the length of the first cylindrical member 130 is substantially the same as the length of the first axial rod 110. The first cylindrical member 130 is fitted closely onto the first axial rod 110, and the inner diameter of the first cylindrical member 130 is substantially equal to or slightly smaller than the diameter of the first axial rod 110, so that the first axial rod 110 and the first cylindrical member 130 do not move relative to each other during rotation. The first cylindrical member 130 may be, for example, a flexible member.

[0287] The first elongated brush member 131, i.e., first elongated blade, extends from the outer surface of the first cylindrical member 130 in a direction away from the first cylindrical member. In some embodiments, the first elongated brush member 131 and the first cylindrical member 130 are of unitary construction, for example, molded integrally from the same material.

[0288] The second roller brush 200 includes a second axial rod 210 and a second brush member 230. The second axial rod 210 may be a rod-like structure, such as an elongated cylindrical structure. Both ends of the rod-like structure may be removably attached to the bottom of the main body of the automatic cleaning device, either directly or via a connecting member. In some embodiments, the second axial rod 210, together with the second brush member 230 mounted on the second axial rod 210, is removably attached to an elongated groove structure in the bottom of the main body, and the elongated groove structure extends along the transverse axis Y.

[0289] The axis of the second shaft 210 is regarded as the rotation axis of the second roller brush 200. After the second roller brush 200 is installed in the main body of the automatic cleaning device, a drive system on the main body drives the second shaft 210 to rotate, either clockwise or counterclockwise. When the second shaft 210 rotates, other assemblies mounted on the second shaft 210, such as the second brush member 230, rotate together to achieve cleaning.

[0290] The second brush member 230 is removably attached to the second shaft 210, which makes it easy to replace the second brush member 230 as a consumable part. The second brush member 230 includes a second cylindrical member 233 and a second elongated brush member 231.

[0291] The second cylindrical member 233 is fitted onto the second axial rod 210 so that the second cylindrical member 230 and the second axial rod 210 are coaxial. The second cylindrical member 230 may be an elongated tubular structure, and the length of the second cylindrical member 230 is substantially the same as the length of the second axial rod 210. The second cylindrical member 230 is fitted closely onto the second axial rod 210, and the inner diameter of the second cylindrical member 230 is substantially equal to or slightly smaller than the diameter of the second axial rod 210, so that the second axial rod 210 and the second cylindrical member 230 do not move relative to each other during rotation. The second cylindrical member 230 may be, for example, a flexible member.

[0292] The second elongated brush member 231, i.e., the second elongated blade, extends from the outer surface of the second cylindrical member 230 in a direction away from the second cylindrical member. In some embodiments, the second elongated brush member 231 and the second cylindrical member 230 are of unitary construction, e.g., molded integrally from the same material.

[0293] In some embodiments, the number of the first long brush members 131 and the number of the second long brush members 231 are both plural, and the first long brush members 131 correspond one-to-one to the second long brush members 231, and any one of the first long brush members 131 is configured to interfere with its corresponding second long brush member 231. Specifically, as shown in FIGS. 28 to 30 , the first roller brush 100 includes five first long brush members 131, and the second roller brush 200 includes five second long brush members 231. Each first long brush member 131 and its corresponding second long brush member 231 rotates together with the first roller brush 100 and the second roller brush 200, respectively, to positions close to each other, and when positioned between the first roller brush 100 and the second roller brush 200, for example, they interfere with each other. The first long brush member 131 and the corresponding second long brush member 231 begin to interfere with each other, for example, at one end, and as they further rotate together with the first roller brush 100 and the second roller brush 200, their interference area moves from one end to the other. As the first roller brush 100 and the second roller brush 200 continue to rotate, they disengage from the interference, and this process is repeated.

[0294] In some embodiments, as shown in FIG. 31 , a mounting portion 1400 for mounting the first roller brush 100 is provided at at least one end of the first roller brush 100, and the mounting portion 1400 is assembled to the first end 52111 of the front cleaning brush mounting position 5211, and the mounting portion 1400 has a plurality of mounting teeth 141, and the angle between two adjacent tooth grooves may be the same as or an integer multiple of the included angle between two adjacent long blades 131 of the first roller brush 100, and similarly, the second roller brush also has a similar mounting portion, and regardless of how the first roller brush and the second roller brush are assembled, the long blades 131 of the first roller brush 100 can correspond to and interfere with the long blades 231 of the second roller brush 200.

[0295] In the related art, when an automatic cleaning device is cleaning a work surface, its roller brush rotates, sweeping dust and dirt on the one hand and sending it into a dust box through an air duct, and winding up tangled matter on the operating surface on the other hand, gradually collecting the tangled matter on both ends of the roller brush. When the tangled matter collected on both ends of the roller brush increases, it needs to be cleaned manually, otherwise it is likely to affect the cleaning effect of the automatic cleaning device.

[0296] The present disclosure provides an automatic cleaning device, including a moving platform configured to automatically move over an operating surface, and a cleaning module assembled to the moving platform and configured to clean the operating surface, the cleaning module including a first roller brush and a second roller brush, the first roller brush arranged along a first direction perpendicular to a front-to-rear axis of the moving platform, and the second roller brush arranged alongside the first roller brush, wherein at least one end of the first roller brush has a first storage chamber configured to store tangled material taken up by the first roller brush, the first storage chamber being comprised of a flexible outer assembly and a first rigid inner assembly, and at least one end of the second roller brush has a second storage chamber configured to store tangled material taken up by the second roller brush, the second storage chamber being comprised of a rigid outer assembly and a second rigid inner assembly.

[0297] The present disclosure provides a storage chamber at the end of the roller brush, which stores tangled debris and eliminates the need to frequently clean the tangled debris from the roller brush, reducing the burden on the user. The rigid cavity wall ensures the strength and cleaning power of the brush element at the end of the corresponding roller brush, while also ensuring a sufficient storage space that is not easily deformed or reduced. The flexible cavity wall ensures the ability of large particles of debris to pass between the two cavities, effectively preventing clogging.

[0298] The following detailed description will be given of the preferred embodiments of the present disclosure in conjunction with the accompanying drawings. The same structures may be referred to the description of the above embodiments and will not be repeated here.

[0299] 32, the cleaning module 5000 includes a first roller brush 100 and a second roller brush 200. The first roller brush 100 and the second roller brush 200 constitute the roller brush 5300, and when the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 rotate in opposite directions. One of the first roller brush 100 and the second roller brush 200 rotates clockwise, and the other rotates counterclockwise.

[0300] A first roller brush 100, e.g., a front roller brush, is arranged along a first direction perpendicular to the longitudinal axis X of the moving platform, the first direction being parallel to the lateral axis Y of the moving platform, a second roller brush 200 is arranged alongside the first roller brush 100, and a second roller brush 200, e.g., a rear roller brush, is arranged along the first direction perpendicular to the longitudinal axis X of the moving platform.

[0301] In some embodiments, the first roller brush 100, e.g., a soft roller brush, has a non-brush member portion that can be compressed in a direction perpendicular to the axis of the first roller brush, allowing large debris to easily pass through the first roller brush for cleaning, while the second roller brush 200, e.g., a hard roller brush, has a non-brush member portion that cannot be compressed in a direction perpendicular to the axis of the second roller brush, making it difficult for debris to pass through the second roller brush, ensuring effective cleaning.

[0302] 32, at least one end of the first roller brush 100 has a first chamber 101 configured to accommodate tangled material taken up by the first roller brush 100, the first chamber 101 being made up of a flexible outer assembly and a first rigid inner assembly. At least one end of the second roller brush 200 has a second chamber 201 configured to accommodate tangled material taken up by the second roller brush 200, the second chamber 201 being made up of a rigid outer assembly and a second rigid inner assembly.

[0303] The second roller brush includes a chamber having a structure similar to that of the first roller brush, and in some embodiments, the second chamber of the second roller brush is configured to accommodate tangles taken up by the second roller brush, and the assembly defining the second chamber includes a second rigid outer assembly. The second rigid outer assembly includes a portion of the second shaft, for example, the second rigid outer assembly includes an inner wall of an end of the second shaft. In some embodiments, the assembly defining the second chamber further includes a second rigid inner assembly, and the second rigid inner assembly includes at least a portion of an end member.

[0304] Since both roller brushes are provided with a storage chamber for storing tangled matter, there is no need to frequently clean tangled matter from the roller brushes, which reduces the burden on the user.

[0305] In some embodiments, the first roller brush 100 includes a first axial rod 110 and a first end structure 120, as shown in FIGS.

[0306] The first axial rod 110 includes an axial rod body 113 and a first end portion 111 on at least one side of the axial rod body 113, and the cross-sectional size of the axial rod body 113 perpendicular to the axial direction is larger than the cross-sectional size of the first end portion 111 perpendicular to the axial direction.

[0307] A first end member 120 is configured to be attached to the first end 111, and the first rigid inner assembly includes a portion of the first end member 120. The first end member 120 is formed from a rigid material. In some embodiments, the first end member 120 is removably attached to the first end 111.

[0308] In some embodiments, the first end member 120 includes a guide sleeve 121 configured to receive the first end member 111 and attach the first end member 120 to the first end member 111, and the first rigid inner assembly includes at least a portion of the guide sleeve 121. Specifically, as shown in FIGS. 33-35 , when the first end member 120 is attached to the first end member 111, a portion of the first end member 120 surrounds at least a portion of the guide sleeve 121, and together they form a first receiving chamber 101.

[0309] In some embodiments, as shown in Figures 33 to 35, the first end member 120 has an introduction portion 1211, which is provided on the inner wall of the guide sleeve 121, the first end 111 includes a first fitting portion 1111, which is fitted into the first fitting portion 1111 to form a guide fitting structure, and the first end member 120 is attached to the first end 111.

[0310] In some embodiments, the lead-in portion 1211 is provided on the inner peripheral wall of the guide sleeve 121, and the lead-in portion 1211 extends spirally along the circumferential direction of the guide sleeve 121 toward the first axial rod 110. Correspondingly, the first fitting portion 1111 is provided on the outer periphery of the first end portion 111, and the first fitting portion 1111 extends spirally along the circumferential direction of the first end portion 111 toward the first end member 110. In this way, the guide and fitting structure formed by the lead-in portion 1211 and the first fitting portion 1111 is a spiral guide and fitting structure. In some embodiments, one of the lead-in portion 1211 and the first fitting portion 1111 is a protrusion, and the other is a recess.

[0311] 33 to 35, the first roller brush 100 further includes a first brush member 130 fitted onto the first axial rod 110, the first brush member 130 including a first cylindrical member 131 and a first brush member 132, the first cylindrical member 131 being fitted onto the first axial rod 110, the first cylindrical member 131 and the first axial rod 132 being coaxial, and the first brush member 132, e.g., a blade, extending from the outer surface of the first cylindrical member 131 in a direction away from the first cylindrical member 131. The first cylindrical member 131 is made of a flexible material, and the flexible outer assembly includes a portion of the first cylindrical member 131.

[0312] In some embodiments, both the first cylindrical member 131 and the first brush member 132 are made of a flexible material, such as a colloidal material, and are integrally molded.

[0313] 33 to 35, the first roller brush 100 further includes a flexible filler 120 between the first shaft 110 and the first cylindrical member 131, and the flexible filler 120 covers, for example, the outer periphery of the shaft body 113 and exposes at least a portion of the first end 111. The first cylindrical member 131 of the first brush member 130 covers the outer periphery of the flexible filler 120. The first roller brush 100 configured in this manner is a soft roller brush.

[0314] In some embodiments, as shown in Figures 33 to 35, the end of the first cylindrical member 131 closest to the first cap member 120 has a first accommodating space 1311 that opens toward the first cap member 120, the first accommodating space 1311 accommodates a portion of the first cap member 120 and the first end 111, and a portion of the first accommodating space 1311 forms the first accommodating chamber 101.

[0315] Specifically, the first cylindrical member 131, the flexible filler 120, and the first axial rod 110 are all coaxially arranged, and the axial length of the flexible filler 120 is shorter than the length of the first axial rod 110. Specifically, the flexible filler 120 covers only the axial rod body 113 of the first axial rod 110, leaving first end portions 111 on both sides of the axial rod body 113 exposed. The axial length of the first cylindrical member 131 is equal to or longer than the length of the first axial rod 110. As such, first receiving spaces 1311 that open toward the first cap member 120 are formed at both ends of the first cylindrical member 131. When the first cap member 120 is attached to the first end portion 111, a portion of the first receiving space 1311 forms the first receiving chamber 101.

[0316] 33 to 35, an end of the first cap member 120 away from the first shaft 110 has a first assembly structure 122. The first assembly structure 122 is used to assemble the first roller brush 100 to the cleaning module, and the first assembly structure 122 is fitted and attached to an attachment position on the cleaning module. The distance between the opening of the first accommodating space 1311 and the first assembly structure 122 is equal to or less than the distance between the first end 111 and the first assembly structure 122. That is, when the first cap member 120 is attached to the first end 111, the end surface of the first cylindrical member 131 closest to the first assembly structure 122 is flush with the end surface of the first end 111 closest to the first assembly structure 122 or is adjacent to the first assembly structure 122.

[0317] In some embodiments, the first cap member 120 includes a driving cap member and a driven cap member. When the first cap member 120 is a driving cap member, such as the first cap member on the left side shown in Figures 33 to 35, the first assembly structure 122 is a transmission structure that is connected to a drive unit in the cleaning module and drives the drive unit to rotate the first roller brush 100.

[0318] When the first cap member 120 is a driven-side cap member, for example, the first cap member on the right side in FIGS. 33 to 35, the first assembly structure 122 is a bearing structure, which makes it easy for the first roller brush 100 to rotate.

[0319] 33 to 35, the first cap member 120 further includes a first blocking structure 123, which is disposed between the assembly structure 122 and the guide sleeve 121 to prevent tangles from excessively extending away from the first brush member. The circumferential size of the first blocking structure 123 is larger than the circumferential sizes of the assembly structure 122 and the guide sleeve 121.

[0320] 33 to 35, the first receiving space 1311 receives a portion of the guide sleeve 121, and the first blocking structure 123 is spaced a first predetermined distance from the opening of the first receiving space 1311. In this manner, tangled objects can enter the first receiving portion 101 during the rotation of the first roller brush 100.

[0321] FIG. 36 is a schematic diagram of an exploded structure of a second roller brush provided by some embodiments of the present disclosure, FIG. 37 is a schematic diagram of an exploded structure of a second roller brush provided by some embodiments of the present disclosure, and FIG. 38 is a schematic diagram of a cross-sectional structure of a second roller brush provided by some embodiments of the present disclosure.

[0322] In some embodiments, the second roller brush 200 includes a second shaft 210 and a second end member 2200, as shown in FIGS.

[0323] The second axial rod 210 has at least one second end 212, and in some embodiments, both ends of the second axial rod 210 have second ends 212, and the second ends 212 have mating members 213. A second end member 2200 is matingly attached to the mating members 213, and is configured to attach the second end member 2200 to the second end 212 of the second axial rod 210.

[0324] The second end 212 has a second receiving space 2112 that opens toward the second end member 2200, the fitting member 213 is received in the second receiving space 2112, the rigid outer assembly comprises a portion of the second end 212, and the second receiving chamber 201 comprises a portion of the second receiving space 2112. In some embodiments, the second end member 2200 includes a guide rod 222, at least a portion of the guide rod extending into the second receiving space 2112 to fit and attach the second end member 2200 to the fitting member 213, and a second rigid inner assembly includes at least a portion of the guide rod 222.

[0325] Specifically, when the second end member 2200 is attached to the second end 212 of the second axial rod 210, at least a portion of the guide rod 222 extends into the second accommodating space 2112 and is fitted into the fitting member 213, for example, the end of the guide rod 222 closest to the second axial rod 210 is inserted into the fitting member 213 to form a fitting connection. At this time, the outer wall of a portion of the guide rod 222 and the inner wall of the second end 212 of the second axial rod 210 form the second accommodating chamber 201.

[0326] In some embodiments, the end of the guide rod 222 facing the second axial rod 210 has a guide portion 2211, which is configured to form a rotational fitting structure together with the fitting member 213. Specifically, the guide portion 2211 extends spirally along the circumferential direction of the guide rod 222 in the direction facing the second axial rod 210.

[0327] In some embodiments, as shown in FIGS. 36 to 38 , the second roller brush 200 further includes a second brush member 230 fitted onto the second axial rod 210, and the second brush member 230 includes a second cylindrical member 231 and a second brush member 232. The second cylindrical member 231 is fitted onto the second axial rod 210, and the second cylindrical member 231 and the second axial rod 210 are configured to be coaxial. The second brush member 232, for example, a blade, extends from the outer surface of the second cylindrical member 231 in a direction away from the second cylindrical member 231, and the axial length of the second cylindrical member 231 is equal to or shorter than the length of the second axial rod 210. That is, the second cylindrical member 231 completely covers the outer circumferential surface of the second axial rod 210, and exposes a portion of the outer circumferential surface of the second end of the second axial rod 210. In this way, the second cylindrical member will not be pressed down and will not collapse, ensuring the strength and cleaning power of the brush member. Preferably, the axial length of the second cylindrical member 231 is equal to the length of the second axial rod 210, ensuring a sufficient cleaning width while ensuring strength and cleaning power.

[0328] In some embodiments, the second shaft 210 is a rigid member, and the second cylindrical member 231 of the second brush member 230 can be directly fitted onto the second shaft 210 .

[0329] In some embodiments, a rigid filler may be further filled between the second brush member 230 and the second axial rod 210, and the rigid filler may be considered as an integral part of the second axial rod 210.

[0330] In some embodiments, the second cylindrical member 231 and the second brush member 232 are both made of a flexible material, such as a colloidal material, and are integrally molded.

[0331] 36 to 38, an end of the second cap member 220 remote from the second shaft 210 has a second assembly structure 221 configured to assemble the second roller brush 200 to the cleaning module, and the second assembly structure 221 is fitted and attached to an attachment position on the cleaning module. The distance between the opening of the second accommodating space 1311 and the first assembly structure 222 is equal to or less than the distance between the second brush member 230 and the second assembly structure 221. That is, when the second cap member 220 is attached to the second end portion 212, the end surface of the second cylindrical member 231 closest to the second assembly structure 221 is flush with the end surface of the second end portion 212 closest to the second assembly structure 221 or is spaced apart from the second assembly structure 221.

[0332] In some embodiments, the second cap member 220 includes a driving cap member and a driven cap member. When the second cap member 220 is a driving cap member, such as the second cap member on the left in FIGS. 36 to 38, the second assembly structure 221 is a transmission structure connected to a drive unit in the cleaning module, and the drive unit drives the second roller brush 200 to rotate.

[0333] When the second cap member 220 is a driven-side cap member, for example, the second cap member on the right side in FIGS. 36 to 38, the second assembly structure 222 is a bearing structure, which makes it easy for the second roller brush 200 to rotate.

[0334] 36 to 38, the second cap member 220 further includes a second blocking structure 225, which is disposed between the second assembly structure 221 and the guide rod 222 to prevent the tangled material from excessively extending away from the second brush member. The circumferential size of the second blocking structure 225 is larger than the circumferential sizes of the second assembly structure 221 and the guide rod 222.

[0335] 36 to 38, the second accommodating space 2112 accommodates a portion of the guide rod 222, and the second blocking structure 225 is spaced a second predetermined distance from the opening of the second accommodating space 2112. In this manner, tangled objects can enter the second accommodating space 201 during the rotation of the second roller brush 200.

[0336] As shown in FIG. 37 , in some embodiments, the number of guide portions 2211 on the side end members is different, forming an inverse assembly design. In some embodiments, the number of guide portions on the drive-side cap member corresponds to the number of sets of second brush members. Typically, the number of guide portions is set as a divisor of the number of sets of second brush members to ensure the required alignment of the blades after assembly. In some embodiments, the installation method of the drive-side second assembly member 222 directly corresponds to the guide portions, i.e., the second assembly structure is configured in the shape of N first repeating units in the circumferential direction, where N is the number of guide portions and the guide portions have N second repeating units along the circumferential direction, where N is a positive integer and N is 2 or greater. The first or second repeating units form a regular or irregular polygon, and the regular polygon is a plum-shaped N-sided polygon. In some embodiments, the N first repeating units of the first roller brush form a regular polygon, and the N first repeating units of the second roller brush form a plum-shaped polygon.

[0337] An embodiment of the present disclosure provides an automatic cleaning device, the automatic cleaning device including a cleaning brush, and an assembly structure at at least one end of the cleaning brush for assembling the cleaning brush in a predetermined position on the automatic cleaning device, the assembly structure having N first repeating units along a circumferential direction, where N is a positive integer and N is 2 or greater.

[0338] In some embodiments, the cleaning brush further includes an end member, one side of which is provided with the assembly structure.

[0339] In some embodiments, the cleaning brush comprises a plurality of sets of brush members, and the number N of first repeating units constitutes a submultiple of the number of sets of brush members in the plurality of sets.

[0340] In some embodiments, the N first repeating units form a regular polygon or an irregular polygon.

[0341] In some embodiments, the polygon is an N-sided polygon formed by a combination of straight lines and / or curves.

[0342] In some embodiments, the regular polygon is a plum-shaped N-gon.

[0343] In some embodiments, the end member further includes a guide rod, the guide rod being located opposite the assembly structure, the guide rod having a guide portion.

[0344] In some embodiments, the guide portion has N second repeating units along the circumferential direction.

[0345] In some embodiments, the end member further comprises a blocking structure.

[0346] In some embodiments, the blocking structure includes a first wall, a recess, and a second wall from the outside to the inside along the axial direction of the cleaning brush, and the thickness of the first wall is greater than the thickness of the second wall.

[0347] In some embodiments, the cleaning brush includes a first roller brush and a second roller brush, and the assembly structure of the first roller brush and the second roller brush has N first repeating units along the circumferential direction, where the shape of the first repeating unit in the first roller brush is different from that of the second roller brush.

[0348] In some embodiments, the N first repeating units in the first roller brush form a regular polygon, and the N first repeating units in the second roller brush form a plum shape.

[0349] In some embodiments, N is 5.

[0350] Compared with the prior art, the above technical solution has the following beneficial technical effects:

[0351] At least one end of the cleaning brush includes an assembly structure, and the cleaning brush is assembled in a predetermined position on the automatic cleaning device. The assembly structure has N first repeating units along the circumferential direction, where N is a positive integer and is 2 or greater, thereby improving installation accuracy and convenience.

[0352] It should be noted that the embodiments in this specification will be described step by step, each embodiment will focus on the differences from other embodiments, and the same or similar parts between the embodiments may be referred to each other. The systems or devices disclosed in the embodiments will be briefly described since they correspond to the disclosed methods of the embodiments, and the relevant parts may be referred to the description of the method part.

[0353] The above embodiments are used to explain the technical solutions of the present disclosure, but are not intended to limit them. The present disclosure has been described in detail with reference to the above embodiments. However, those skilled in the art can still modify the technical solutions described in each of the above embodiments or substitute some of the technical features with equivalents, and it should be understood that these modifications and substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each of the embodiments of the present disclosure.

Claims

1. 1. An automatic cleaning device including a cleaning brush, at least one end of the cleaning brush includes an assembly structure for assembling the cleaning brush in a predetermined position on the automatic cleaning device; The automatic cleaning device is characterized in that the assembly structure has N first repeating units along a circumferential direction, where N is a positive integer of 2 or more.

2. the cleaning brush further includes an end member; The automatic cleaning device according to claim 1 , wherein the assembly structure is provided on one side of the end member.

3. The cleaning brush includes a plurality of sets of brush members; 2. The automatic cleaning device of claim 1, wherein the number N of the first repeating units is a divisor of the number of sets of the plurality of brush members.

4. The automatic cleaning device of claim 1 , wherein the N first repeating units form a regular polygon or an irregular polygon.

5. The automatic cleaning device according to claim 4 , wherein the polygon is an N-sided polygon formed by a combination of straight lines and / or curves.

6. The automatic cleaning device according to claim 4 , wherein the regular polygon is a plum-shaped N-gon.

7. The end member further includes a guide rod, the guide rod being disposed on the opposite side from the assembly structure; The automatic cleaning device according to claim 2 , wherein the guide rod has a guide portion.

8. The automatic cleaning device according to claim 7 , wherein the guide portion has N second repeating units along the circumferential direction.

9. The automatic cleaning device of claim 2 , wherein the end member further includes a blocking structure.

10. 10. The automatic cleaning device of claim 9, wherein the blocking structure includes a first wall, a recess, and a second wall from the outside to the inside along the axial direction of the cleaning brush, and the thickness of the first wall is greater than the thickness of the second wall.

11. The cleaning brush includes a first roller brush and a second roller brush, the assembly structure of the first roller brush and the second roller brush has N first repeating units along a circumferential direction; 3. The automatic cleaning device of claim 2, wherein the shape of the first repeating unit of the first roller brush is different from that of the second roller brush.

12. the N first repeating units in the first roller brush form a regular polygon; The automatic cleaning device of claim 11 , wherein the N first repeating units of the second roller brush form a plum shape.

13. The automatic cleaning device according to any one of claims 1 to 12, wherein N is 5.

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