Cleaning module and cleaning device

Abstract

The present disclosure provides a cleaning module (5000) and a cleaning device, the cleaning module (5000) comprising a first roller brush (100) and a second roller brush (200), the first roller brush (100) comprising a first brush element (132), the second roller brush (200) being arranged substantially parallel to the first roller brush (100), the second roller brush (200) comprising a second brush element (232), and when the first roller brush (100) and the second roller brush (200) rotate, at least a portion of the outer contour formed by the outer end locus of the first brush element and the outer contour formed by the outer end locus of the second brush element interfere with each other, the first brush element (132) and the second brush element (232) do not come into contact with each other, and an unobstructed air intake path between the first roller brush (100) and the second roller brush (200) is ensured.

Description

Related Applications

[0001] This disclosure claims priority to Chinese Patent Application No. 202211734557.9, filed in China on December 30, 2022, the entire contents of which are incorporated herein by reference. [Technical Field]

[0002] FIELD OF THE DISCLOSURE The present disclosure relates to the technical field of cleaning devices, and in particular to cleaning modules and cleaning devices. [Background technology]

[0003] With the continuous development of technology, automatic cleaning devices such as sweeping robots and sweeping and mopping robots are widely adopted in homes. To realize the sweeping function of cleaning robots with sweeping functions, automatic cleaning devices are equipped with a pair of roller brushes to pick up dust of different sizes on the cleaning surface, and the dust is sent to a dust collection box through an air intake.

[0004] However, conventional automatic cleaning devices are not always able to send the dust into the dust collection box, and there is a need to further improve the dust cleaning efficiency. Summary of the Invention

[0005] Some embodiments of the present disclosure provide a cleaning module, a first roller brush including a first brush component; a second roller brush disposed substantially alongside the first roller brush and including a second brush component; Here, when the first roller brush and the second roller brush rotate, at least a portion of the outer contour formed by the locus of the outer end of the first brush component and at least a portion of the outer contour formed by the locus of the outer end of the second brush component interfere with each other, and the first brush component and the second brush component do not come into contact with each other.

[0006] In some embodiments, when the first roller brush and the second roller brush rotate, at least a portion of the projections of the first brush component and the second brush component in a horizontal plane overlap.

[0007] In some embodiments, when at least a portion of the projections of the first brush part and the second brush part on a horizontal plane overlap, the spacing between the first brush part and the second brush part is less than half the spacing between adjacent first brush parts or adjacent second brush parts.

[0008] In some embodiments, the first brush component and the second brush component may have a mirror-symmetrical distribution in a radial cross section of the first roller brush and the second roller brush before they are assembled into the cleaning module.

[0009] In some embodiments, the cleaning module comprises: The roller brush may further include an air duct opening located at the top of the first roller brush and / or the second roller brush, and the air duct opening is configured to have an unobstructed air flow passage between the first roller brush and the second roller brush when the first roller brush and the second roller brush rotate.

[0010] In some embodiments, the first brush element is a first long brush element, and the first roller brush further comprises at least one first short brush element, and the first short brush element and the second roller brush are not in contact; and / or The second brush component is a second long brush component, and the second roller brush further includes at least one second short brush component, and the second short brush component and the first roller brush do not contact each other.

[0011] In some embodiments, each of the first short brush components is disposed between two adjacent first long brush components, and / or each of the second short brush components is disposed between two adjacent second long brush components.

[0012] In some embodiments, the first brush component is a first long brush component, and the first roller brush further comprises at least one first short brush component, and an outer contour formed by an outer end locus of the first short brush component when the first roller brush rotates does not interfere with an outer contour formed by an outer end locus of the second brush component when the second roller brush rotates; and / or The second brush component is a second long brush component, and the second roller brush further includes at least one second short brush component, and the outer contour formed by the outer end locus of the second short brush component when the second roller brush rotates does not interfere with the outer contour formed by the outer end locus of the first brush component when the first roller brush rotates.

[0013] In some embodiments, the first roller brush and the second roller brush are arranged side by side, one behind the other, in the direction of movement of the cleaning module.

[0014] In some embodiments, the first brush component extends spirally along the axial direction of the first roller brush; and / or The second brush component extends spirally along the axial direction of the second roller brush.

[0015] In some embodiments, the thickness of the first long brush component is less than or equal to the thickness of the first short brush component; and / or The thickness of the second long brush component is equal to or less than the thickness of the second short brush component.

[0016] In some embodiments, the first roller brush includes a first support member having a support surface for supporting the first brush member, at least a portion of the support surface being incompressible; and / or The second roller brush includes a second support member having a support surface for contacting and supporting the second brush member, at least a portion of the support surface being incompressible.

[0017] In some embodiments, the entire bearing surface of the first roller brush is incompressible and / or the entire bearing surface of the second roller brush is incompressible.

[0018] In some embodiments, the first long brush element and the second short brush element are disposed opposite each other when the first roller brush rotates; and / or When the second roller brush rotates, the second long brush component and the first short brush component are disposed opposite to each other.

[0019] In some embodiments, the first brush element and the second brush element are disposed in an intersecting relationship.

[0020] In some embodiments, the first long brush component and the second short brush component are disposed crosswise, and / or the second long brush component and the first short brush component are disposed crosswise.

[0021] Some embodiments of the present disclosure further provide a cleaning device including the cleaning module according to any one of the above claims.

[0022] Compared with the related art, the above solution of the embodiments of the present disclosure has at least the following beneficial effects:

[0023] In the automatic cleaning device provided by the present disclosure, the outer contours of the first brush component and the second brush component interfere with each other during operation, but the first brush component and the second brush component do not come into contact with each other, so an unobstructed air intake path is secured between the first roller brush and the second roller brush, and the same position on the floor can be cleaned twice in succession, thereby improving cleaning efficiency. [Brief explanation of the drawings]

[0024] 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. [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] FIG. 1 is a schematic bottom view of an automatic cleaning device provided by some embodiments of the present disclosure. [Figure 3] 1 is a structural schematic diagram of a cleaning module 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. [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] FIG. 2 is a schematic cross-sectional view of a second roller brush provided by some embodiments of the present disclosure. [Figure 6-2] FIG. 10 is a schematic cross-sectional view of a second roller brush provided by 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 a partial structure of the first end member and the shaft of the cleaning brush of FIG. 7 at an angle. [Figure 10] 8 is an exploded view of a partial structure of the cleaning brush of FIG. 7 at a different angle of the first end member and the shaft rod. [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 second end member and shaft of the cleaning brush of FIG. 7 at an angle. 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 mating member of the shaft rod of FIG. 13. FIG. [Figure 17] 14 is a schematic three-dimensional structural view of an example of a guide fitting structure between the end member and the mating member of the shaft rod in FIG. 13. FIG. [Figure 18] FIG. 18 is an exploded view of the guide fitting structure of FIG. [Figure 19] FIG. 2 is a schematic exploded 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 a portion of the cleaning brush of FIG. 19 at an angle. [Figure 21] 20 is a partial structural exploded view of the cleaning brush of FIG. 19 from another angle. [Figure 22] FIG. 1 is a schematic diagram of the combined structure of two sets of roller brushes according to some embodiments of the present disclosure. [Figure 23] 1 is a cross-sectional schematic diagram of a combined structure of two sets of roller brushes according to some embodiments of the present disclosure. FIG. [Figure 24] FIG. 23 is a structural schematic diagram of a first roller brush in FIG. 22. [Figure 25] FIG. 25 is a schematic diagram of a cross-sectional structure of a first roller brush in FIG. 24. DETAILED DESCRIPTION OF THE INVENTION

[0025] In order to clarify the objectives, technical solutions and advantages of the present disclosure, 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, and not all 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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. 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.

[0030] Below, optional embodiments of the present application will be described in detail in conjunction with the accompanying drawings.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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 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, and the elongated groove structure 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. 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.

[0043] 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.

[0044] 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 diameter of the given cylinder, 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.

[0045] 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.

[0046] 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 2000 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.

[0047] 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.

[0048] 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 and deformed inward 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 certain 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.

[0049] 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.

[0050] 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.

[0051] 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 increase the friction force between the brush member and dirt, resulting in more thorough cleaning.

[0052] 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 set at at least one end of the second shaft member 220. The second shaft member 220 includes at least one engaging member 210 attached thereto (for example, an engaging member 210 is provided at one or both ends of the second shaft member 220), and is connected to a multi-stage gear set of the drive system 2000 via the engaging member 210, and receives the driving force of the drive system 2000 to realize forward or reverse rotation. Here, 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 described later as an example.

[0053] In some embodiments, as shown in FIG. 6-1 , the second shaft member 220 includes a hollow structure 221, which extends 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 221 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 hollow structure 221 at the step portion forms the accommodating cavity 222 with the largest diameter (e.g., the accommodating cavity 222 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 2000 to realize forward or reverse rotation of the second shaft member 220.

[0054] 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 from one end of the second cylindrical member 231 to the other end of the second cylindrical member 231 along the axial direction of the second cylindrical member 231. The second brush members 232 may have other forms, such as blades or bristles.

[0055] 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.

[0056] In some embodiments, the number of second brush members 232 is multiple, and each second brush member 232 has a V-shaped structure on the outer surface of the second cylindrical member 231, and the multiple second brush members 232 are distributed substantially uniformly 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 face the same direction on 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 a V-shaped structure, the shape of the first brush member 132 is also a V-shaped structure.

[0057] 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.

[0058] 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. 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 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, a 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 a 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 in substantially the same horizontal plane, the interference between the first brush member and the floor surface increases, 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 tasks.

[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 in the cleaning module in a substantially flat 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 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.

[0066] 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.

[0067] 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.

[0068] 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. 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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, the first guide hole 1113 being coaxial with the shaft rod 110 and configured to accommodate the first guide shaft 123.

[0083] 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 approximately the same as the number of the 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 approximately the same as 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.

[0084] 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.

[0085] 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 that is fitted onto the outer periphery of the shaft, 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.

[0086] 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. 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.

[0087] 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.

[0088] Furthermore, 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 is used to prevent tangled material from extending too far away from the brush member and to prevent tangled material from extending too far away from the cleaning brush. The first blocking structure 125 is, for example, at least one blocking ring, and in this example, two blocking rings. By providing the blocking structure, tangled material, such as dirt, is directly tangled in the blocking structure of the first end member, preventing it from becoming entangled on the shaft rod and allowing it to be removed together with the cap member when the end member is removed.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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 of 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] The size of the two second guide portions on the driven end is between the size 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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 a second guide hole (not shown) is provided on the end surface of the second end 112 away from the first end 111, and the second guide hole is coaxial with the shaft rod 110 and configured to accommodate the second guide shaft 144.

[0102] 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 . 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] Furthermore, since the number of sides of the regular polygon on the outer end surface of the first end member is approximately the same as 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, it is ensured that the directions of members such as blades in the brush members of the cleaning brush are consistent.

[0111] Furthermore, by providing a blocking structure on the end member, the entangled object is directly entangled in the blocking structure of the end member, and the entangled object can be effectively prevented from becoming entangled in the shaft rod.

[0112] 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.

[0113] 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.

[0114] 13 to 18, the cleaning brush 200 includes a shaft 210 having a first end 211 and a second end 212 that are opposite in the axial direction, at least one of the first end 211 and the second end 212 includes a fitting member 213, a brush member 230, the brush member 230 is coaxially fitted on the outer periphery of the shaft 210, and further includes an end member 220 that is fitted and attached to the fitting member 213, and an assembly structure 221 is provided on the side of the end member 220 away from the fitting member 213.

[0115] Specifically, the assembly structure 221 includes, for example, a bearing structure 221" and a transmission structure 221', and when the end member 220 is a driving side end member, i.e., when the end member 220 is a first side end member 220' connected to the drive unit of the cleaning module, the assembly structure 221 is, for example, a transmission structure 221'. When the end member 220 is a driven side end member, i.e., when the end member 220 is a second side end member 220" opposite to the first side end member 220', the assembly structure 221 is, for example, a bearing structure 221".

[0116] 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.

[0117] As shown in Figure 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 220, and the engaging member 213 is accommodated in the accommodation space 214, and a part of the end member 220 is inserted into the accommodation space 214 and engaged with the engaging member 213 to be attached.

[0118] Specifically, the end face of the fitting member 213 close to the assembly structure 221 is farther from the assembly structure 221 than the opening 2141 of the receiving space 214, as specifically shown in FIG.

[0119] 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.

[0120] As shown in Figure 15, the end member 220 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.

[0121] 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 (i.e., extends while rotating spirally) along the outer circumferential surface of the guide rod 222, and the guide portion 2221 has a rotation direction, for example, a clockwise (or counterclockwise) rotation direction around the axis of the shaft 210.

[0122] 14 and 15, the end member 220 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 in 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.

[0123] 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.

[0124] Specifically, there are a plurality of guiding portions 2221. In the example of Fig. 15, there are five guiding portions 2221, and these five guiding portions 2221 have the same size.

[0125] 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 211 may be different.

[0126] Furthermore, the end member 220 further includes a guide shaft 223 that extends from the guide rod 222 away from the assembly structure 221 , and a snap-stop member 2231 is further provided on the end of the guide shaft 223 that is away from the guide rod 222 .

[0127] In this embodiment, one end of the guide shaft 223 close to the assembly structure 221 is fitted into the guide rod 222 .

[0128] 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.

[0129] 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 .

[0130] 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 specifically FIG. 17.

[0131] In this example, the number of the fitting portions 311 is the same as the number of the guiding portions 211, for example, five.

[0132] 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 the guide portions and the number of the fitting portions are the same. The above are described as optional examples and are not to be understood as limiting the present disclosure.

[0133] 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 enhances the stability of the installation structure.

[0134] In the example of Figure 16, the engaging member 213 includes an extension portion 2132 connected to a main body portion 2130 and extending outward from the 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.

[0135] 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, and allowing the fitting member 213 to be better connected to the accommodating space 214 of the axial rod 210, thereby improving the connection strength of the connection structure between the fitting member 213 and the axial rod 210 and making the installation more stable.

[0136] 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.

[0137] 17, a snap fastening portion 21322 is provided at one end of the fitting member 213 near 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 end member 220 form a snap fastening fitting structure.

[0138] 13, the end member 220 is provided with a blocking structure 225, which is used to prevent tangled material from extending excessively 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). 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.

[0139] 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.

[0140] In another example, in the cleaning brush 200 shown in FIG. 19, the end member 220 includes a first side end member 220′ and a second side end member 220″, 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 is a rigid member, the brush member 230 is directly fitted into the shaft 210, and the cleaning brush 200 is, 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.

[0141] In this example, the first guide portions 2221' of the first side end member 220' (ie, the end member 220 in FIG. 14) and the second guide portions 2221'' of the second side end member 220'' are different in at least one of shape, number, and size.

[0142] In an alternative embodiment, the shape and size of the first guide portions 2221' of the first side end member 220' are the same as the shape and size of the second guide portions 2221" of the second side end member 220", the number of first guide portions 2221' of the first side end member 220' is greater than the number of second guide portions 2221" of the second side end member 220", and the number of second guide portions 2221" of the second side end member 220" is not approximately the same as the number of first guide portions 2221' of the first side end member 220'. For example, the number of first guide portions 2221' of the first side end member 220' is five, and the number of second guide portions 2221" of the second side end member 220" is two.

[0143] 19 and 20, the first side end member 220' (i.e., the end member 220 on the driving side, the left end shown in FIG. 20) is attached to the first end 210 of the shaft 210, and the first side end member 220' 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.

[0144] 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.

[0145] 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.

[0146] Specifically, the number of first guide portions 2221′ of the first side end member 220′ is approximately the same as 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.

[0147] 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.

[0148] As shown in FIG. 20, the second side end member 220″ 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 220″ 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.

[0149] Specifically, the first side end member 220' is attached to a first fitting member 213' at a first end 211 within the shaft 210, and the second side end member 220'' is attached to a second fitting member 213'' at a second end 212 within the shaft 210.

[0150] 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.

[0151] 19, the first side end member 220' 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'.

[0152] As shown in Figures 20 and 21, the second side end member 220" includes a second guide rod 222", at least one second guide portion 2221" and a second guide shaft 223", where the second guide rod 222" is provided with a plurality of second guide portions 2221".

[0153] Optionally, when the shape of the first guide portion 2221' of the first side end member 220' and the shape of the second guide portion 2221" of the second side end member 220" are the same, the number of first guide portions 2221' of the first side end member 220' and the number of second guide portions 2221" of the second side end member 220" are different.

[0154] Optionally, the number of first guide portions 2221' of the first side end member 220' is odd, and the number of second guide portions 2221" of the second side end member 220" is even. Preferably, the number of first guide portions 2221' of the first side end member 220' and the number of second guide portions 2221" of the second side end member 220" are not substantially equal to 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 any side end member cannot be mistakenly attached, thereby achieving maximum foolproofness.

[0155] 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 portion 2221" of the second guide rod 222", and the number of the second guide portions 2221" is two, and 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".

[0156] Specifically, the second engaging member 213″ includes an extension portion 2132″ connected to a 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.

[0157] As shown in Figures 20 and 21, the extension portion 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 portion 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 surface between the second fitting member 213" and the interior of the axial rod 210, and enabling the second fitting member 213" to be better fitted into the accommodating 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.

[0158] 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 220'' form a snap fastening fitting structure.

[0159] In the example of Figure 19, the first side end member 220' 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.

[0160] The assembly structure 221″ of the second side end member 220″ 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 220″, 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.

[0161] Optionally, a blocking structure 225' is provided on the first side end member 220', specifically between the assembly structure (specifically, the transmission structure 221') and the first guide rod 222'. A blocking structure 225'' is provided on the second side end member 220'', 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 extending excessively away from the brush member 230.

[0162] In this example, the outer end surface of the first side end member 220' 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 220', the transmission structure 221', that is remote from the guide rod 222 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 220'. At the same time, the number of first guide portions 2221' of the first side end member 220' is approximately the same as the number of the brush members 232.

[0163] Compared with the prior art, the cleaning brush of the present disclosure forms a rotational fitting structure by the guiding 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 mounting, a more efficient foolproof mounting structure, further improving the ease of mounting the end member, and further improving the stability of the mounting structure.

[0164] Furthermore, by providing a blocking structure on the end member, the entangled object is directly entangled in the blocking structure of the end member, and the entangled object can be effectively prevented from becoming entangled in the shaft rod.

[0165] In related technology, automatic cleaning devices such as sweeping robots are equipped with a pair of roller brushes to pick up dust of different sizes on the cleaning surface, which is then sent to a dust collection box through an air intake. However, conventional automatic cleaning devices are not always able to efficiently send dust to the dust collection box, so how to improve the dust collection effect of automatic cleaning devices has become a technical issue that needs to be resolved as soon as possible.

[0166] The present disclosure provides a cleaning module and an automatic cleaning device, the cleaning module comprising a first roller brush and a second roller brush, the first roller brush comprising a first brush component, the second roller brush being arranged substantially parallel to the first roller brush, and the second roller brush comprising a second brush component, wherein when the first roller brush and the second roller brush rotate, at least a portion of the outer contour formed by the locus of the outer end of the first brush component and the outer contour formed by the locus of the outer end of the second brush component interfere with each other, and the first brush component and the second brush component do not come into contact with each other, thereby improving the dust collection effect of the cleaning module.

[0167] During the operation of the automatic cleaning device provided by the present disclosure, the outer contours of the first brush component and the second brush component interfere with each other, but the first brush component and the second brush component do not come into contact with each other, so an unobstructed air intake path is ensured between the first roller brush and the second roller brush, and the same position on the floor surface can be cleaned twice in succession, thereby improving cleaning efficiency. Below, optional embodiments of the present application will be described in detail in conjunction with the accompanying drawings.

[0168] Fig. 1 is a schematic diagram of the three-dimensional structure of an automatic cleaning device provided by some embodiments of the present disclosure, and Fig. 2 is a schematic bottom view of an automatic cleaning device provided by some embodiments of the present disclosure. As shown in Figs. 1 and 2, the automatic cleaning device may be a vacuum floor suction robot, a mopping / scrubbing 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. The specific structure is the same as in the above embodiments and will not be repeated here.

[0169] FIG. 22 shows the structure and positional relationship of the first and second roller brushes provided by some embodiments of the present disclosure. Referring to FIGS. 2, 22, and 23, the cleaning module 5000 further includes a first roller brush 100 and a second roller brush 200, where the first roller brush 100 serves as the front brush of the cleaning module 5000 and the second roller brush 200 serves as the rear brush of the cleaning module 5000. The moving platform 10 is provided with a roller brush storage space, such as a long, narrow storage groove at the bottom of the moving platform 10, for storing the first and second roller brushes 100 and 200. In some embodiments, the moving platform 10 is further provided with roller brush mounting positions, and one ends of the first and second roller brushes 100 and 200 can be engaged and fixed to the roller brush mounting positions, thereby realizing detachable mounting of the first and second roller brushes 100 and 200 on the moving platform 10.

[0170] The first roller brush 100 is arranged along a first direction perpendicular to the axis of the moving platform 10, for example, the horizontal axis Y direction, and the second roller brush 200 is also arranged along a first direction perpendicular to the axis of the moving platform 10, for example, the horizontal axis Y direction, i.e., the second roller brush 200 is arranged side by side with the first roller brush 100.

[0171] 22 , the first roller brush 100 and the second roller brush 200 are arranged side by side, for example, the first roller brush 100 and the second roller brush 200 are arranged side by side in the direction of movement of the cleaning module, with a first brush component provided on the first roller brush 100 and a second brush component provided on the second roller brush 200, and in an optional embodiment, the first roller brush 100 includes a first long brush component 121 and a first short brush component 122, and the second roller brush 200 includes a second long brush component 221 and a second short brush component 222. Of course, in some embodiments, the first roller brush 100 and the second roller brush 200 may not include the first short brush component 122 and the second short brush component 222, and may only include the first long brush component 121 and the second long brush component 221, and still be able to clean the operating surface.

[0172] In some embodiments, as shown in FIG. 23, when the first roller brush 100 and the second roller brush 200 rotate, for example when performing a cleaning task or a dust collection task, the outer contour A formed by the outer end trajectory of the first brush part (e.g., the first long brush part 121) and the outer contour B formed by the outer end trajectory of the second brush part (e.g., the second long brush part 221) interfere with each other, and the first brush part and the second brush part do not come into contact with each other. That is, an interference region C exists between the outer contour A of the first roller brush 100 and the outer contour B of the second roller brush 200, and in this interference region C, the first brush component and the second brush component intersect and extend into the gap between them, but do not come into contact with each other. This forms an unobstructed airflow path between the first brush component and the second brush component, and when performing a cleaning task, the airflow generated by the rotation of the fan can pass through the gap between the first brush component and the second brush component and smoothly enter the dust box, thereby allowing dust on the operating surface to pass through the gap between the first brush component and the second brush component and enter the dust box. When performing a dust collection task, the airflow generated by the rotation of the fan on the dust collector passes through the gap between the first brush component and the second brush component and is smoothly expelled into the dust box.

[0173] In some embodiments, when the first roller brush 100 and the second roller brush 200 rotate, the horizontal projections of the first brush part (e.g., the first long brush part 121) and the second brush part (e.g., the second long brush part 221) overlap, and the horizontal projections of the first long brush part 121 and the second long brush part 221 rotated within a preset range between the central axes of the first roller brush 100 and the second roller brush 200 overlap. That is, there will inevitably be an overlapping area C between the first long brush part 121 and the second long brush part 221, and for the two corresponding first long brush parts 121 and the second long brush part 221, the overlapping area C generated by them will gradually appear, then increase, and then decrease until it disappears. It should be understood that, optionally, the position with the largest overlapping area will also be the position where the first long brush part 121 and the second long brush part 221 are closest to each other.

[0174] In some embodiments, when the first long brush part 121 and the second long brush part 221 are projected onto a horizontal plane and overlap, the distance between the first long brush part 121 and the second long brush part 221 is smaller than half the distance between the adjacent first long brush part or the adjacent second long brush part. Here, the distance between the first long brush part and the adjacent second long brush part refers to the minimum distance from an end of the first long brush part to the brush surface of the adjacent second long brush part, or the minimum distance from the end of the second long brush part to the brush surface of the adjacent first long brush part, and the brush surface refers to the surface from the base of the brush part to the end of the brush part, and the brush surface may be flat or curved. That is, when the distance between two adjacent first long brush parts 121 or two adjacent second long brush parts 221 is a, as the first roller brush 100 and the second roller brush 200 rotate, the distance between the corresponding first long brush part 121 and the second long brush part 221 is smallest when the corresponding first long brush part 121 and the second long brush part 221 are located between the central axes of the first roller brush 100 and the second roller brush 200. At this time, the distance between the two is limited to be greater than 0 and smaller than a / 2. As a result, a sufficient airflow passage is formed between the first long brush part 121 and the second long brush part 221, and at the same time, an efficient cleaning effect is obtained. When the first long brush element 121 rotates until it interferes with the operating surface, the corresponding second long brush element 221 also basically interferes with the operating surface. At this time, a closed cleaning space is formed between the two roller brushes on the operating surface, and the fan increases the negative pressure generated at that position, which is more advantageous for sucking dust into the dust box. On the other hand, as the first roller brush 100 and the second roller brush 200 rotate, the rotation speed of the roller brushes is greater than the movement speed of the cleaning device, so the corresponding first long brush element 121 and the second long brush element 221 clean the same position almost simultaneously, which is more advantageous for cleaning the operating surface.

[0175] In some embodiments, before the first roller brush 100 and the second roller brush 200 are assembled into the cleaning module, the first brush component and the second brush component in their radial cross sections may have a mirror-symmetrical distribution, which means that the first brush component and the second brush component can be completely overlapped with each other with respect to an axis of symmetry perpendicular to a connecting line between the central axes of the first roller brush 100 and the second roller brush 200 at least under a certain rotation angle. During assembly, at least one of the two can be rotated by a predetermined small angle so that the first brush component and the second brush component just pass through the interference region C continuously without coming into contact with each other.

[0176] In some embodiments, at least one of the two may be rotated at a predetermined large angle during assembly. When the first roller brush 100 and the second roller brush 200 are provided with the first short brush component 122 and the second short brush component 222, the first long brush component 121 and the second short brush component 222 substantially correspond to each other but do not contact each other, and the second long brush component 221 and the first short brush component 122 substantially correspond to each other but do not contact each other. As the first roller brush 100 and the second roller brush 200 rotate, the second long brush component 221 does not interfere with the operating surface. When this occurs, the corresponding first short brush part 122 is just adjacent to the operating surface, and at this time the first short brush part 122 does not contact the operating surface or just contacts the operating surface, so that dust on the front side of the first roller brush 100 can more easily enter between the first roller brush 100 and the second roller brush 200 from below the first short brush part 122. At this time, interference between the second long brush part 221 and the operating surface prevents dust from leaking out from below the second roller brush 200, and ensures that the dust enters the dust box together with the airflow.

[0177] In some embodiments, the cleaning module further comprises an air duct opening, which is located at the top of the first roller brush 100 and / or the second roller brush 200, and is configured to have an unobstructed airflow passage between the first roller brush 100 and the second roller brush 200 when the first roller brush 100 and the second roller brush 200 rotate, and the first long brush element 121 and the second short brush element 222 do not come into contact with each other, so that the air duct opening can be designed more flexibly, i.e., even if the air duct opening is located at any position along the axial direction of the roller brush, an unobstructed air flow path can be formed and dust collection can be ensured.

[0178] 24 and 25, in some embodiments, Fig. 24 is a structural schematic diagram of the first roller brush 100, and Fig. 25 is a cross-sectional structural schematic diagram of the first roller brush 100 in Fig. 24. Note that Fig. 24 describes the structure of the roller brush using only the first roller brush 100 as an example, and in some embodiments, the structure of the second roller brush 200 is substantially the same as the structure of the first roller brush 100, and the two are non-mirror image assemblies. Therefore, it is sufficient to refer to the structure of the first roller brush 100 shown in the figures for the second roller brush 200, and the description of the second roller brush 200 will not be repeated.

[0179] As shown in FIG. 24 or 25, in some embodiments, the first roller brush 100 includes a first axial rod 110 and a first brush member 120, wherein the first brush member 120 is mounted on the first axial rod 110.

[0180] The first shaft 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 moving platform of the cleaning device directly or via connectors. In some embodiments, the first shaft 110, together with the first brush member 120 mounted on the first shaft 110, is removably attached to an elongated roller brush receiving groove in the bottom of the moving platform.

[0181] 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 mounted on a moving platform, a driving system on the moving platform can drive the first shaft 110 to rotate, and the rotation direction can be clockwise or counterclockwise. When the first shaft 110 rotates, other assemblies mounted on the first shaft 110, such as the first brush member 120, can be driven to rotate simultaneously, thereby achieving cleaning purposes.

[0182] The first brush member 120 is mounted on the first shaft 110, and specifically, in some embodiments, the first brush member 120 is removably mounted on the first shaft 110, facilitating daily cleaning and maintenance of the first brush member 120.

[0183] In some embodiments, the first brush member 120 includes a first cylindrical member 123 and a first long brush element 121 , and in some embodiments, the first brush member 120 further includes a first short brush element 122 .

[0184] The first cylindrical member 123 is sleeved onto the first axial rod 110, making the first cylindrical member 123 and the first axial rod 110 coaxial. The first cylindrical member 123 may be an elongated tubular structure, and the length of the first cylindrical member 123 is substantially the same as the length of the first axial rod 110. The first cylindrical member 123 is sleeved tightly onto the first axial rod 110, and the inner diameter of the first cylindrical member 123 is substantially the same as or slightly smaller than the outer diameter of the first axial rod 110, so that no relative movement occurs between the first axial rod 110 and the first cylindrical member 123 during rotation. The first cylindrical member 123 may be a flexible or rigid member.

[0185] In some embodiments, the first short brush element 122 extends from the outer surface of the first cylindrical member 123 in a direction away from the first cylindrical member 123. The first long brush element 121 extends from the outer surface of the first cylindrical member 123 in a direction away from the first cylindrical member 123. In some embodiments, the length by which the first long brush element 121 extends away from the first cylindrical member 123 is greater than the length by which the first short brush element 122 extends away from the first cylindrical member 123, and the thickness of the first long brush element 121 is less than the thickness of the first short brush element 122. That is, relatively speaking, the first short brush element 122 is short and thick, and the first long brush element 121 is long and thin. A short and thick first short brush element 122 is advantageous for cleaning dirt or debris that requires a large external force to clean, and a long and thin first long brush element 121 is advantageous for cleaning a larger area of ​​debris.

[0186] By varying the length and thickness of the brush elements, the first short brush element 122 can exert strong cleaning power when handling relatively large debris (such as rice husks and particles), and the contact force between the first long brush element 121 and the cleaning surface is relatively small, resulting in low daily cleaning noise. By varying the length and thickness of the brush elements, when cleaning a flat, hard surface such as tile or flooring, the first short brush element 122 does not come into contact with the cleaning surface, while the first long brush element 121 can come into contact with the cleaning surface, knocking and lifting up debris such as dust and hair, which can then be sucked into the dust box. When cleaning a surface with a certain thickness, such as a carpet, both the first short brush element 122 and the first long brush element 121 can come into contact with the carpet surface, and in this case, the relatively coarse first short brush element 122 plays a more important role, knocking and removing dust and hair hidden in the carpet, thereby improving the cleaning effect.

[0187] The first roller brush 100 includes a first support member 130, which is disposed between the first shaft 110 and the first brush member 120, and which has a support surface for contacting and supporting the first brush member 120, at least a portion of which is incompressible, or the entire support surface is incompressible.

[0188] Correspondingly, it should be understood that the second roller brush includes a second shaft and a second brush member, and the second brush member may be removably mounted on the second shaft. The second brush member may include a second cylindrical member, a second long brush element, and a second short brush element. The second roller brush includes a second support member, the second support member being disposed between the second shaft and the second brush member, the second support member having a support surface for contacting and supporting the second brush element, and at least a portion of the support surface being incompressible or the entirety of the support surface being incompressible.

[0189] It should be understood that the number of the first long brush parts 121 may be one or more, or the number of the first long brush parts 121 may be multiple, and the multiple first long brush parts 121 may be uniformly distributed on the circumferential direction of the first cylindrical member 123. The number of the first short brush parts 122 may also be one, or the number of the first short brush parts 122 may be multiple, and the multiple first short brush parts 122 may be uniformly distributed on the circumferential direction of the first cylindrical member 123.

[0190] In some embodiments, the first short brush components 122 and the first long brush components 121 are alternately and uniformly arranged around the first cylindrical member 123. For example, the brush member 120 of the first roller brush 100 may include five first short brush components 122 and five first long brush components 121, and the five first short brush components 122 and the five first long brush components 121 may be alternately and uniformly arranged around the first cylindrical member 123.

[0191] Correspondingly, it should be understood that the number of the second long brush components may be one or more, and the plurality of second long brush components may be uniformly distributed around the circumference of the second cylindrical member. The number of the second short brush components may be one or more, and the plurality of second short brush components may be uniformly distributed around the circumference of the second cylindrical member. The second short brush components and the second long brush components are alternately and uniformly arranged around the circumference of the first cylindrical member.

[0192] 22, an air intake passage 50 is further present between the first roller brush 100 and the second roller brush 200, and the first long brush component 121 and the second long brush component 221 extend spirally. At one time, the air intake passage 50 intersects with one end of the roller brush to form an intersecting opening, i.e., the first long brush component 121 and the second long brush component 221 intersect with one another to form an intersecting opening, and the air intake passage 50 opens with the other end of the roller brush to form an open opening, i.e., the first long brush component 121 and the second long brush component 221 do not interfere with one another to form an open opening. As the roller brushes rotate, the open opening moves back and forth in the axial direction, and the intersecting opening also moves back and forth in the axial direction, so that the intersecting opening communicates with the open opening.

[0193] Specifically, when the first roller brush 100 and the second roller brush 200 are operating, the first roller brush 100 and the second roller brush 200 rotate at approximately the same speed but in opposite directions, e.g., the first roller brush 100 rotates in a first rotation direction and the second roller brush 200 rotates in a second rotation direction, and the first and second rotation directions are opposite, e.g., the first rotation direction is counterclockwise and the second rotation direction is clockwise. During the rotation process, the outer contours of the corresponding first long brush part 121 and second long brush part 221 may interfere with each other but do not come into contact with each other.

[0194] When the first roller brush 100 and the second roller brush 200 rotate in opposite directions, the first long brush element 121 and the second long brush element 221 collect dust toward the center, so that the dust passes through the air duct and is sucked into the dust box inside the moving platform 10, thereby achieving the cleaning purpose.

[0195] In some embodiments, when the first roller brush 100 and the second roller brush 200 are operating, the first roller brush 100 and the second roller brush 200 rotate at the same speed but in opposite directions, and during the rotation process, the first short brush component 122 and the second roller brush 200 do not interfere with each other, i.e., the first short brush component 122 does not come into surface contact with the second long brush component 221 and the second short brush component 222. Similarly, in some embodiments, the second short brush component 222 and the first roller brush 100 do not interfere with each other, i.e., the second short brush component 222 does not come into surface contact with the first long brush component 121 and the first short brush component 122. It should be understood that, compared to the long brush components, the short brush components are shorter in length and thicker, which increases the contact force and allows them to clean more predominant dirt.

[0196] In some embodiments, before the first roller brush 100 and the second roller brush 200 are assembled, their outer contours in radial cross section have a mirror-symmetrical distribution, i.e., the first long brush components 121 and the second long brush components 221 are plural in number, and the plural first long brush components 121 correspond one-to-one to the plural second long brush components 221. The distribution positions of the first long brush components 121 on the circumferential direction of the first cylindrical member 123 correspond one-to-one to the distribution positions of the plural second long brush components 221 on the circumferential direction of the second cylindrical member 223, for example, the plural first long brush components 121 are uniformly distributed on the circumferential direction of the first cylindrical member 123, and the plural second long brush components 221 are uniformly distributed on the circumferential direction of the second cylindrical member 223.

[0197] In some embodiments, the first long brush element 121 extends on the outer surface of the first cylindrical member 123 from one end of the first cylindrical member 123 to the other end of the first cylindrical member 123. Specifically, the first long brush element 121 extends in a spiral shape on the outer surface of the first cylindrical member 123 from one end of the first cylindrical member 123 to the other end of the first cylindrical member 123 in the second rotation direction. By providing the first long brush element 121 in a spiral shape on the outer surface of the first cylindrical member 123, more parts of the first cylindrical member 123 come into contact with the cleaning surface, achieving more sufficient contact between the first cylindrical member 123 and the cleaning surface, making it easier to remove dirt from the cleaning surface and improving cleaning performance.

[0198] Correspondingly, it should be understood that the second long brush component 221 extends spirally on the outer surface of the second cylindrical member 223 from one end of the second cylindrical member 223 to the other end of the second cylindrical member 223 along the first rotational direction.

[0199] In some embodiments, the first long brush component 121 extends spirally on the outer surface of the first cylindrical member 123 from one end of the first cylindrical member 123 along a second rotation direction to the middle of the first cylindrical member 123, and then extends spirally along the first rotation direction to the other end of the first cylindrical member 123.

[0200] Correspondingly, the second long brush part 221 extends spirally on the outer surface of the second cylindrical member 223 from one end of the second cylindrical member 223 along a first rotation direction to the middle of the second cylindrical member 223, and then extends spirally along a second rotation direction to the other end of the second cylindrical member 223.

[0201] In some embodiments, at least one of the first roller brush 100 and the second roller brush 200 is a hard-core roller brush, e.g., one is a hard-core roller brush and the other is a soft-core roller brush. The term "hard-core roller brush" refers to the inner core of the roller brush being filled with a hard, non-elastic filler, while the term "soft-core roller brush" refers to the inner core of the roller brush being filled with an elastic filler. Hard-core roller brushes are less likely to deform during long-term use, facilitating accurate alignment of the roller brushes during interference processes. Therefore, in this embodiment, at least one roller brush is a hard-core roller brush, which allows the positional relationship between the corresponding first and second long brush components to be maintained over a long period of time, preventing the positional relationship from being affected by deformation of the inner core of the roller brushes and improving the stability of the automatic cleaning device.

[0202] During the operation of the automatic cleaning device provided by the present disclosure, the outer contours of the first and second long brush components interfere with each other, but the first and second long brush components do not come into contact with each other, so an unobstructed air intake path is ensured between the first and second roller brushes, and the same position on the floor can be cleaned twice in succession, thereby improving cleaning efficiency.

[0203] It should be noted that the embodiments in this specification are described in order, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments may be referred to. The systems or devices disclosed in the embodiments correspond to the methods disclosed in the embodiments, so they will be briefly described, and the relevant parts may be referred to the description of the method.

[0204] 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 can equivalently replace some of the technical features thereof, and it should be understood that these modifications and replacements do not deviate from the essence of the corresponding technical solutions and the spirit and scope of the technical solutions of each of the embodiments of the present disclosure.

Claims

1. a first roller brush including a first brush component; a second roller brush disposed substantially alongside the first roller brush and including a second brush component; When the first roller brush and the second roller brush rotate, at least a portion of the outer contour formed by the locus of the outer end of the first brush component and at least a portion of the outer contour formed by the locus of the outer end of the second brush component interfere with each other, and the first brush component and the second brush component do not come into contact with each other.

2. 2. The cleaning module of claim 1, wherein when the first roller brush and the second roller brush rotate, at least a portion of the projections of the first brush component and the second brush component in a horizontal plane overlap.

3. 2. The cleaning module according to claim 1, wherein when at least a portion of the projections of the first brush part and the second brush part on a horizontal plane overlap, the distance between the first brush part and the second brush part is smaller than half the distance between adjacent first brush parts or adjacent second brush parts.

4. 2. The cleaning module of claim 1, wherein the first brush component and the second brush component in a radial cross section of the first roller brush and the second roller brush can have a mirror-symmetrical distribution before the first roller brush and the second roller brush are assembled into the cleaning module.

5. The cleaning module comprises:

2. The cleaning module of claim 1, further comprising an air duct opening located at the top of the first roller brush and / or the second roller brush, wherein when the first roller brush and the second roller brush rotate, the air duct opening is configured to always have an unobstructed air flow passage between the cleaning module and the operating surface.

6. the first brush component is a first long brush component, the first roller brush further comprises at least one first short brush component, and the first short brush component and the second roller brush are not in contact; and / or 2. The cleaning module of claim 1, wherein the second brush element is a second long brush element, the second roller brush further includes at least one second short brush element, and the second short brush element and the first roller brush do not contact each other.

7. 7. The cleaning module of claim 6, wherein each of the first short brush components is disposed between two adjacent first long brush components, and / or each of the second short brush components is disposed between two adjacent second long brush components.

8. The first brush component is a first long brush component, and the first roller brush further includes at least one first short brush component, and the outer contour formed by the locus of the outer end of the first short brush component when the first roller brush rotates does not interfere with the outer contour formed by the locus of the outer end of the second brush component when the second roller brush rotates; and / or 2. The cleaning module of claim 1, wherein the second brush component is a second long brush component, the second roller brush further includes at least one second short brush component, and an outer contour formed by an outer end locus of the second short brush component when the second roller brush rotates does not interfere with an outer contour formed by an outer end locus of the first brush component when the first roller brush rotates.

9. The cleaning module according to claim 1 , wherein the first roller brush and the second roller brush are arranged side by side in a front-to-back direction in the direction of movement of the cleaning module.

10. the first brush component extends spirally along the axial direction of the first roller brush; and / or 2. The cleaning module of claim 1, wherein the second brush component extends spirally along the axial direction of the second roller brush.

11. the thickness of the first long brush component is less than or equal to the thickness of the first short brush component; and / or 9. The cleaning module of claim 6 or 8, wherein the thickness of the second long brush component is equal to or less than the thickness of the second short brush component.

12. the first roller brush includes a first support member having a support surface for supporting the first brush member, at least a portion of the support surface being incompressible; and / or 2. The cleaning module of claim 1, wherein the second roller brush includes a second support member having a support surface for contacting and supporting the second brush member, at least a portion of the support surface being incompressible.

13. 13. A cleaning module according to claim 12, wherein the entire support surface of the first roller brush is incompressible and / or the entire support surface of the second roller brush is incompressible.

14. When the first roller brush rotates, the first long brush component and the second short brush component are disposed opposite each other; and / or 9. The cleaning module according to claim 6 or 8, wherein the second long brush component and the first short brush component are disposed opposite each other when the second roller brush rotates.

15. 2. The cleaning module of claim 1, wherein the first brush element and the second brush element are disposed crosswise.

16. 7. The cleaning module of claim 6, wherein the first long brush component and the second short brush component are arranged crosswise, and / or the second long brush component and the first short brush component are arranged crosswise.

17. A cleaning device comprising a cleaning module according to any one of claims 1 to 16.

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