Automatic cleaning device

Abstract

This disclosure provides an automatic cleaning device, comprising a cleaning brush, the cleaning brush comprising an end member, the end member comprising a guide rod, the cleaning brush further comprising a shaft member, the shaft member comprising a shaft, the shaft having a first end and a second end opposite in the axial direction, wherein the guide rod is fitted and attached to the first end and / or second end of the shaft.

Description

Technical Field

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

[0002] This disclosure relates to the technical field of cleaning devices, specifically to automatic cleaning devices.

Background Art

[0003] With the continuous development of technology, automatic cleaning devices such as sweeping robots and mopping machines have become widely popular in ordinary households. In order to realize the sweeping function, a cleaning robot with a sweeping function is provided with a cleaning brush to wind up dust of different sizes on the floor and send it to the dust collection box by suction.

[0004] The structure and installation method of the cleaning brush are one of the important factors affecting the cleaning effect of the automatic cleaning device. However, with the existing single-brush structure, the cleaning effect of the automatic cleaning device cannot be improved, and targeted cleaning cannot be performed on different cleaning surfaces, so the wide application of the automatic cleaning device is limited.

Summary of the Invention

[0005] Embodiments of this disclosure provide an automatic cleaning device, including a cleaning brush, the cleaning brush includes an end member, the end member includes a guide rod, the cleaning brush further includes a shaft member, the shaft member includes a shaft rod, the shaft rod has a first end and a second end that are opposite along the axial direction, where the guide rod is attached to the first end and / or the second end of the shaft rod in a matching manner.

[0006] In some embodiments, at least one of the first and second ends of the shaft has a housing space.

[0007] In some embodiments, at least a portion of the shaft is solid.

[0008] In some embodiments, the accommodation space includes a first spatial segment, and the first spatial segment is configured to accommodate at least a portion of the guide rod.

[0009] In some embodiments, the accommodation space further includes a second spatial segment, the guide rod is provided with a guide portion, and the second spatial segment has a structure that conforms to the shape of the guide portion of the guide rod and is connected in accordance with the guide portion.

[0010] In some embodiments, the accommodation space further includes a third spatial segment, the end member is further provided with a guide shaft, and the third spatial segment is configured to accommodate at least a portion of the guide shaft.

[0011] In some embodiments, the inner diameter of the first spatial segment is larger than the inner diameter of the second spatial segment, and / or the inner diameter of the second spatial segment is larger than the inner diameter of the third spatial segment.

[0012] In some embodiments, the end member further includes at least one guide portion, which is provided on the outer circumferential surface of the guide rod, and the at least one guide portion is uniformly distributed in the circumferential direction of the guide rod.

[0013] In some embodiments, the guide portion is a projection formed by etching a groove onto the outer surface of the guide rod. In some embodiments, the end member includes a first end member and a second end member, wherein at least one of the shape, number, and size of the first guide portion of the first end member and the second guide portion of the second end member differs.

[0014] In some embodiments, the number of first guide portions of the first end member is greater than the number of second guide portions of the second end member.

[0015] In some embodiments, the number of second guide portions of the second end member and the number of first guide portions of the first end member are not divisors of each other.

[0016] In some embodiments, the number of first guide portions of the first end member is odd, and the number of second guide portions of the second end member is even.

[0017] In some embodiments, the end member further includes a guide shaft, wherein the outer diameter of the guide shaft is smaller than the outer diameter of the guide rod.

[0018] In some embodiments, the guide shaft includes a buckle member provided along its outer surface, and the buckle member has an annular groove structure or an annular projection structure.

[0019] In some embodiments, the end member includes a first end member and a second end member, and the guide shafts of the first end member and the second end member have the same structure.

[0020] In some embodiments, one end of the guide shaft is inserted into the guide rod.

[0021] In some embodiments, the guide rod is an injection-molded product, and the guide shaft is a metal part.

[0022] Compared to prior art, the above technical solution has the following beneficial technical effects.

[0023] By providing a structure in which the end member and the shaft are fitted together, the ease of attaching the end member can be further improved, and the stability of the attachment structure can be further enhanced.

[0024] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments that conform to the present disclosure and are used to interpret the principles of the present disclosure together with the specification. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these accompanying drawings without creative labor.

Brief Description of the Drawings

[0025] [Figure 1] It is a schematic three-dimensional structure diagram of a self-cleaning device provided by some embodiments of the present disclosure. [Figure 2] It is a schematic bottom view of a self-cleaning device provided by some embodiments of the present disclosure. [Figure 3] It is a schematic structure diagram of a cleaning module provided by some embodiments of the present disclosure. [Figure 4] It is a schematic cross-sectional view of a cleaning module provided by some embodiments of the present disclosure. [Figure 5] It is a schematic longitudinal cross-sectional view of a first roller brush provided by some embodiments of the present disclosure. [Figure 6] It is a schematic transverse cross-sectional view of a first roller brush provided by some embodiments of the present disclosure. [Figure 6-1] It is a schematic transverse cross-sectional view of a second roller brush provided by some embodiments of the present disclosure. [Figure 6-2] It is a schematic transverse cross-sectional view of a second roller brush provided by some other embodiments of the present disclosure. [Figure 7] It is an exploded three-dimensional structure diagram of an example of a cleaning brush provided by the present disclosure. [Figure 8] It is a three-dimensional structure diagram of an example of a first end member of the cleaning brush in FIG. 7. [Figure 9] It is an exploded partial structure diagram of the first end member of the cleaning brush in FIG. 7 and the shaft rod at one angle. [Figure 10] It is an exploded partial structure diagram of the first end member of the cleaning brush in FIG. 7 and the shaft rod at another angle. [Figure 11] Figure 7 is an exploded view of the cleaning brush from a different angle. [Figure 12] Figure 7 is a local structural exploded view of the cleaning brush, showing the second end member and the shaft at one angle. [Figure 13] This is an exploded view of the three-dimensional structure of an example of a cleaning brush provided in this disclosure. [Figure 14] Figure 13 is a schematic diagram of the cross-sectional structure of the cleaning brush. [Figure 15] Figure 13 is a three-dimensional structural diagram of an example of an end member of a cleaning brush. [Figure 16] Figure 13 is a schematic diagram of the three-dimensional structure of an example of a fitting member for a shaft. [Figure 17] Figure 13 is a schematic diagram of a three-dimensional structure of an example of a guide fitting structure between the end member and the shaft fitting member. [Figure 18] Figure 17 is an exploded view of the guide fitting structure. [Figure 19] This is an exploded schematic diagram of the three-dimensional structure of another example of a cleaning brush provided in this disclosure. [Figure 20] Figure 19 is a localized exploded view of the cleaning brush at one angle. [Figure 21] Figure 19 is an exploded view of the cleaning brush from a different angle. [Figure 22] This is a schematic diagram of the structure of a roller brush provided by some embodiments of the present disclosure. [Figure 23] Figure 2 is a schematic diagram of the cross-sectional structure of the roller brush. [Figure 24] This is a schematic diagram of a partially enlarged structure of a roller brush provided by some embodiments of the present disclosure. [Figure 25] This is a schematic diagram of a partially enlarged structure of a roller brush provided by some embodiments of the present disclosure. [Figure 26] This is a schematic diagram of a partially enlarged structure of a roller brush provided by some embodiments of the present disclosure. [Figure 27] This is a schematic diagram of the cleaning module from a different perspective, as provided by some embodiments of this disclosure. [Figure 28]This is a schematic diagram of a cleaning module cross-sectional structure provided by some embodiments of the present disclosure. [Figure 29] This is a schematic diagram of the structure of the first and second roller brushes provided by some embodiments of the present disclosure. [Figure 30] This is a schematic diagram of the structure of the first and second roller brushes provided by some embodiments of the present disclosure. [Figure 31] This is a schematic diagram of the structure of a first roller brush provided by some embodiments of the present disclosure. [Figure 32] This is a schematic diagram of the structure of the first and second roller brushes provided by some embodiments of the present disclosure. [Figure 33] This is a schematic diagram of the exploded structure of a first roller brush provided by some embodiments of the present disclosure. [Figure 34] This is a schematic diagram of the exploded structure of a first roller brush provided by some embodiments of the present disclosure. [Figure 35] This is a schematic diagram of the cross-sectional structure of a first roller brush provided by some embodiments of the present disclosure. [Figure 36] This is a schematic diagram of the exploded structure of a second roller brush provided by some embodiments of the present disclosure. [Figure 37] This is a schematic diagram of the exploded structure of a second roller brush provided by some embodiments of the present disclosure. [Figure 38] This is a schematic diagram of the cross-sectional structure of a second roller brush provided by some embodiments of the present disclosure. [Modes for carrying out the invention]

[0026] To further clarify the purpose, technical solutions, and advantages of this disclosure, the disclosure will be described in more detail below with reference to the accompanying drawings, although obviously the embodiments described are only a selection of the embodiments of this disclosure, not all of them. Any other embodiments that a person skilled in the art could obtain without creative work based on the embodiments of this disclosure are all covered by this disclosure.

[0027] Furthermore, the terms “includes,” “equipped with,” or any other variations thereof are intended to cover non-exclusive inclusion, and it should be noted that a product or apparatus containing a set of elements includes not only those elements but also other elements explicitly listed, or elements specific to those products or apparatus. Unless further limited, an element defined by the expression “includes…” does not exclude the presence of other identical elements in a product or apparatus containing such element.

[0028] In related technologies, such as automatic cleaning devices and sweeping robots, there are double roller brush models. In these double roller brush models, the two roller brushes typically have a soft brush structure that is easily deformed. The roller brush structure of the double soft brush can deform significantly, resulting in good passage of large particles of dust. However, the manufacturing process for the soft roller brushes is complex and costly, and they are prone to deformation with long-term use. Therefore, how to rationally design the structure of the two roller brushes is an urgent technical challenge that needs to be addressed.

[0029] Embodiments of the present disclosure provide an automatic cleaning device comprising a moving platform configured to move on an operating surface, and a cleaning module assembled on the moving platform and configured to clean the operating surface, wherein the cleaning module comprises a first roller brush and a second roller brush, the first roller brush being provided along a first direction perpendicular to the longitudinal axis of the moving platform, the first roller brush comprising a first brush member, a first shaft, and a first filler, the first filler being fitted onto the first shaft so that the first filler and the first shaft are coaxial, the second roller brush being assembled on the cleaning module along a direction parallel to the first roller brush, the second roller brush comprising a second brush member and a second shaft member, wherein the first filler is an elastic member, the second shaft member 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.

[0030] In the automatic cleaning device provided by the embodiments of this disclosure, a double roller brush structure is provided, comprising a first roller brush and a second roller brush. By making the first filler in the first roller brush an elastic member and the second shaft member a rigid member, the automatic cleaning device can effectively clean the floor surface with two types of roller brushes, one soft and one hard. This improves the passage of debris between the first and second roller brushes, and allows for a rational setting of 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.

[0031] In the embodiments of this disclosure, one of the roller brushes is set as a hard brush, consisting of an internal hard core and an external debris scabbard. It has a simple structure, high size accuracy, and allows for easy control of the amount of interference with the floor surface during the cleaning process. It ensures cleaning effectiveness and cleaning noise within an appropriate range. Because the hard brush does not have a sponge, it deforms less even after long-term use, resulting in a longer service life. The combination of soft and hard ensures sufficient passage of large debris particles.

[0032] The following describes in detail the selectable embodiments of this application, in conjunction with the attached drawings.

[0033] Figures 1 and 2 are schematic diagrams of an automated cleaning device according to an exemplary embodiment. As shown in Figures 1 and 2, the automated cleaning device may be a vacuum cleaning robot, a mopping / brushing robot, a window climbing robot, etc., and includes a mobile platform 1000, a sensing system 2000, a control system (not shown), a drive system 3000, an energy system (not shown), a man-machine interactive system 4000, and a cleaning module 5000.

[0034] 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, which works on a floor surface, and the floor surface is the operating surface; the automatic cleaning device may be a window cleaning robot, which works on the exterior glass surface of a building, and the glass surface is the operating surface; the automatic cleaning device may be a pipe cleaning robot, which works on the interior surface of a pipe, and the interior surface of the pipe is the operating surface. For purely illustrative purposes, a mopping robot is described as an example in this disclosure.

[0035] In some embodiments, the mobile platform 1000 may be an autonomous mobile platform or a non-autonomous mobile platform. The autonomous mobile platform means that the mobile platform 1000 itself can automatically and adaptively make operational decisions in response to unexpected environmental inputs, while the non-autonomous mobile platform itself cannot adaptively make operational decisions in response to unexpected environmental inputs but can operate according to predetermined procedures or certain logic. Accordingly, if the mobile platform 1000 is an autonomous mobile platform, the target direction may be determined autonomously by the automatic cleaning device, and if the mobile platform 1000 is a non-autonomous mobile platform, the target direction may be set by the system or manually.

[0036] The sensing system 2000 includes a position determination device (not shown) located above the mobile platform 1000, a buffer (not shown) located in the front part of the mobile platform 1000, a cliff sensor (not shown) and an ultrasonic sensor (not shown), an infrared sensor (not shown), a magnetometer (not shown), an accelerometer (not shown), a gyroscope (not shown), and an odometer (not shown) located at the bottom of the mobile platform, and provides the control system with various position information and movement status information of the equipment.

[0037] To facilitate explanation, the following directions are defined: The automatic cleaning device is defined by three vertical axes: the lateral axis Y, the longitudinal axis X, and the vertical axis Z. The direction of the arrow along the longitudinal axis X is "rear," and the direction opposite to the direction of the arrow along the longitudinal axis X is "forward." The lateral axis Y is substantially the direction 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 the direction extending upward from the bottom surface of the automatic cleaning device. As shown in Figure 1, the direction along the longitudinal axis X is defined as the second direction, which is, for example, forward or rear, and the direction perpendicular to the second direction in the horizontal plane is the first direction, which is, for example, left or right.

[0038] The control system (not shown) is provided on a circuit board within the mobile platform 1000 and includes a central processing unit that communicates with non-temporary memory such as a hard disk, flash memory, and random access memory, and an application processor. The application processor receives environmental information sensed by the multiple sensors from the sensing system, obstacle information fed back from the positioning device, etc., and uses a positioning algorithm, such as SLAM, to draw an instant map of the environment in which the automatic cleaning device is installed. Based on the environmental information and the environmental map, it autonomously determines a travel path and then controls operations such as forward, reverse and / or steering of the drive system 3000 according to the autonomously determined travel path. Furthermore, the control system can decide whether to activate the cleaning module 5000 and perform a cleaning operation based on the environmental information and the environmental map.

[0039] The drive system 3000 can execute drive commands based on specific distance and angle information such as x, y, and θ components to operate the automatic cleaning device and make it travel across the floor surface. The drive system 3000 includes a drive wheel assembly, and the drive system 3000 can control the left and right wheels simultaneously. To control the operation of the device more precisely, it is preferable that the drive system 3000 consists of a left drive wheel assembly and a right drive wheel assembly, respectively. The left and right drive wheel assemblies are arranged symmetrically along the transverse axis defined by the moving platform 1000. To allow the automatic cleaning device to move more stably on the floor surface or to have a higher mobility, the automatic cleaning device may include one or more steering assemblies, the steering assembly may be a driven wheel or a drive wheel, its structural form may be a universal wheel, and the steering assembly may be located in front of the drive wheel assembly.

[0040] The energy system (not shown) includes rechargeable batteries such as nickel-metal hydride batteries and lithium batteries. The rechargeable batteries are connected to a charging control circuit, a battery pack charging temperature detection circuit, and a battery voltage drop monitoring circuit, and the charging control circuit, battery pack charging temperature detection circuit, and battery voltage drop monitoring circuit are connected to a microcontroller control circuit. The host computer is connected to the charging pile for charging via charging electrodes located on the side or bottom of the main unit.

[0041] The man-machine interactive system 4000 includes keys on a host panel, which are available to the user for function selection, and may further include a display screen and / or indicator lights and / or a speaker, the display screen, indicator lights and speaker being able to show the user the current status of the device or function options, 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 show the user a map of the environment in which the device is installed and the location of the device, providing the user with a richer and more user-friendly set of functions.

[0042] As shown in Figure 2, the cleaning module 5000 includes a dust box, a fan, and a main brush module. The main brush module cleans debris from the floor surface in front of the dust intake port between the main brush module and the dust box, and sucks it into the dust box via a gas with suction force generated by the fan that passes through the dust box. The dust removal capacity of a vacuum cleaner is characterized by its dust pickup efficiency (DPU), which is influenced by the airflow utilization rate of the duct consisting of the dust intake port, dust box, fan, air outlet, and their connecting members, and is influenced by the type and power of the fan, making it a complex system design issue. Compared to ordinary plug-in dust collectors, improved dust removal capacity is of great significance to energy-constrained automatic cleaning devices. This is because improved dust removal capacity directly and effectively reduces the energy required, meaning that a machine that can clean 80 square meters of floor space on a single charge can be improved to clean 180 square meters or more on a single charge. Furthermore, reducing the number of charging cycles significantly extends battery life, allowing users to replace batteries less frequently. More intuitive and importantly, improved dust removal capabilities result in the most obvious and significant user experience, where users directly determine whether the machine cleans or wipes effectively.

[0043] Figure 2 is a schematic diagram of the bottom structure of the automatic cleaning device in Figure 1. As shown in Figure 2, the automatic cleaning device includes a mobile platform 1000, which is configured to move freely on the operating surface. A cleaning module 5000 is provided at the bottom of the mobile platform 1000, and the cleaning module 5000 is configured to clean the operating surface. The cleaning module 5000 includes a drive unit 5100, a roller brush frame 5200, and a roller brush 5300 assembled within the roller brush frame 5200. The drive unit 5100 provides forward or reverse rotational driving force, which is applied to the roller brush 5300 via a multi-stage gear set, causing the roller brush 5300 to rotate under the driving force to clean the operating surface, or to rotate under the driving force to collect dust.

[0044] As shown in Figure 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 housing the cleaning roller brush. 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 a first direction. The rear cleaning brush mounting position 5212 has a third end 52121 and a fourth end 52122 opposite the third end 52121. In some embodiments, the structure of the rear cleaning brush mounting position 5212 and the front cleaning brush mounting position 5211 are substantially the same, for example, an elongated groove structure in a moving platform, the elongated groove structure extending along the first direction, and the second roller brush can be mounted in the elongated groove of the rear cleaning brush mounting position 5212 through an opening in 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 it is sufficient that it can 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 front-to-rear axis X-axis, while 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 front-to-rear axis X-axis.

[0045] In the following embodiments of this disclosure, the elongated groove structure closest to the steering wheel of the automatic cleaning device is designated as the front cleaning brush mounting position 5211, and the elongated groove structure further from the steering wheel is designated as the rear cleaning brush mounting position 5212. These examples will be described in detail, but of course, the reverse is also possible.

[0046] As shown in Figure 2, in some embodiments, the automatic cleaning device includes two cleaning roller brushes 5300, one of which is located at the front cleaning brush mounting position 5211 and is referred to as the "front roller brush," and the other cleaning roller brush is located at the rear cleaning brush mounting position 5212 and is referred to as the "rear roller brush." ​​The front roller brush is mounted within the front cleaning brush mounting position 5211 through an opening in an elongated groove structure, and the rear roller brush is mounted within the rear cleaning brush mounting position 5212 through an opening in an elongated groove structure.

[0047] Figure 3 shows a combined structure of a cleaning module provided by some embodiments of the present disclosure, and Figure 4 shows a cross-sectional structure of a cleaning module provided by some embodiments of the present disclosure. As shown in Figures 3 and 4, the roller brush 5300 assembled within the roller brush frame 5200 includes a first roller brush 100 and a second roller brush 200 provided along a first direction perpendicular to the longitudinal axis of the moving platform, the first roller brush 100 comprising a first brush member, a first shaft rod 110, and The second roller brush 200 includes a first filler 120, the first filler 120 being fitted onto the first shaft 110 so that the first filler 120 and the first shaft 110 are coaxial, the second roller brush 200 is provided along a direction parallel to the first roller brush 100, and in some embodiments, the first roller brush 100 and / or the second roller brush 200 may be assembled in other directions, for example, a second direction not parallel to the longitudinal axis, clearly the second direction and the first direction making a certain angle with the longitudinal axis. The second roller brush 200 includes a second brush member and a second shaft member 220, the second shaft member 220 being coaxial with the second brush member, where the first filler 120 is an elastic member and the second shaft 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 after assembly, the first filler has a first inner diameter and a first outer diameter. However, in some embodiments, the first filler does not necessarily have to be a continuous cylinder, but may be the remaining shape after arbitrarily cutting out a cylinder, for example, a discontinuous cylinder, or one or more separate parts, the common feature of which is that after assembly they have the same thickness, and the inner and outer surfaces of this thickness each have the diameter of the cylindrical shape in which they are located, 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, to pick up debris on the operating surface when performing a cleaning task, and to discharge debris in the dust box when performing a dust collection task.In this embodiment, the first roller brush 100 may be the "front roller brush" described above or the "rear roller brush" described above, and similarly, the second roller brush 200 may be the "front roller brush" described above or the "rear roller brush" described above, but is not particularly limited thereto.

[0048] Specifically, as shown in Figures 5 and 6, Figure 5 is a cross-sectional view of a first roller brush provided by some embodiments of the present disclosure along a second direction, and Figure 6 is a cross-sectional view of a first roller brush provided by some embodiments of the present disclosure along a first direction.

[0049] 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 achieve forward or reverse rotation. The first shaft 110 is elongated cylindrical, elongated prismatic, or elongated polygonal prismatic, and is not particularly limited thereto; the elongated cylindrical shape will be used as an example later. The axis of the first shaft 110 is considered the axis of rotation of the first roller brush 100. After the first roller brush 100 is mounted on the moving platform, the drive system 3000 can be driven to rotate the first shaft 110, thereby driving the first brush member 130 on the surface of the first shaft 110 to perform cleaning.

[0050] The first roller brush 100 further includes a first filler 120, which is fitted onto the first shaft 110 so that the first filler 120 and the first shaft 110 are coaxial, as shown in Figure 4. The cross-section of the first filler 120 is annular, and its inner ring shape matches the cross-sectional shape of the first shaft 110. The inner ring shape may be circular, square, polygonal, etc., and is not particularly limited thereto. Let us explain using the example of the case where the outer ring shape is generally circular, and the cross-section of the first filler 120 is annular. In this case, the cross-section of the first filler 120 has an inner diameter and an outer diameter. Its inner diameter is substantially the same as the diameter of the first shaft 110, realizing a seamless socket between the first filler 120 and the first shaft 110. Its outer diameter is substantially the same as the inner diameter of the first cylindrical member 131, realizing 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 returns to its original shape when no longer biased. It may be, for example, a sponge, an organic flexible material, a resin material, a foamed material, etc., and not all of these are listed. Furthermore, the first filler 120 may be a hollowed-out material or structure having the same compression properties, for example, a spring or an elastic sheet, and not all of these are listed.

[0051] The first roller brush 100 further includes a first brush member 130, which is fitted to the outside of the first filler 120, and the first brush member 130 includes a first cylindrical member 131, which is fitted to the outside of the first filler 120 and configured so that the first cylindrical member 131 and the first shaft 110 are coaxial, the first cylindrical member 131 may usually be cylindrical and have a length substantially the same as the length of the first shaft 110, the first cylindrical member 131 is usually compressible and is formed from, for example, elastic plastic or rubber material, and is compressible inward and deformable under the action of an external force and can return to its original shape when the external force is removed. The first cylindrical member 131 usually has a certain thickness in order to improve the wear resistance of the entire first brush member 130. The first brush member 130 further includes a first brush member 132, which may be a plurality of sheet structures, and the first brush member 132 extends from the outer surface of the first cylindrical member 131 in a direction away from the first cylindrical member 131, and at least one first brush member 132 extends along the axial direction of the first cylindrical member 131 from one end of the first cylindrical member 131 to the other end of the first cylindrical member 131. The first brush member 132 may be in other forms such as blades or bristles.

[0052] In some embodiments, there are multiple first brush members 132, each first brush member 132 having a helical 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 helical structures of the multiple first brush members 132 being substantially parallel. By designing the first brush members 132 as helical structures, debris can be easily picked up when the front and rear roller brushes rotate in opposition to each other, preventing excessive impact force or damage to the first brush members 132 and improving their service life.

[0053] In some embodiments, there are multiple first brush members 132, each first brush member 132 having a V-shaped structure on the outer surface of the first cylindrical member 131, with the multiple first brush members 132 being substantially uniformly distributed along the circumferential direction of the first cylindrical member 131, and the tips of the V-shaped structures of the multiple first brush members 132 pointing in the same direction along the circumferential direction of the first cylindrical member 131. By designing the first brush members 132 as having a V-shaped structure, when the front and rear roller brushes rotate in opposition to each other, debris can be easily picked up, preventing excessive impact force or damage to the first brush members 132 and improving their service life.

[0054] In some embodiments, a plurality of first protrusions 1321 are provided on the surface of the first brush member 132. The plurality of first protrusions on the first brush member 132 are uniformly distributed along the stretching direction of the surface of the first brush member 132, and the plurality of first protrusions 1321 increase the frictional force between the brush member and the dirt, allowing for cleaner cleaning.

[0055] In some embodiments, as shown in Figure 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 the second shaft of the second roller brush 200, the second shaft member 220 is a rigid member, and the second shaft member 220 is provided at least at one end of the second shaft member 220. It includes at least one fitting member 213 (for example, a fitting member 213 is provided at one or both ends of the second shaft member 220, and this is called a fitting structure), and is connected to the multi-stage gear set of the drive system 3000 via the fitting member 213, and receives the driving force of the drive system 3000 to achieve forward or reverse rotation, where the external shape of the second shaft member 220 is an elongated cylindrical shape, an elongated prismatic shape, or an elongated polygonal prismatic shape, and is not particularly limited thereto, and will be explained later using an elongated cylindrical shape as an example.

[0056] In some embodiments, as shown in Figure 6-1, the second shaft member 220 includes a hollow structure 2210, the hollow structure 2210 extending along the axial direction of the second shaft member 220 and through the central axis 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 It has a second inner diameter D 2内 and the second outer diameter D 2外 This constitutes the radial thickness of the second axial member 220. At least one end of the hollow structure (for example, one or both ends of the second shaft member 220) includes a stepped portion, the stepped portion having one, two, or three steps, for example, if the stepped portion has two steps, the end face of the hollow structure 2210 has a third inner diameter and a fourth inner diameter, where the second inner diameter < third inner diameter < fourth inner diameter, where the outermost end of the hollow structure 2210 of the stepped portion forms a housing cavity 2222 of the largest diameter (for example, the housing cavity 2222 has a fourth inner diameter), the fitting member 213 has an external shape that fits the stepped portion, the fitting member 213 is fixedly or detachably connected to the hollow structure after being assembled to the stepped portion, the fitting member 213 is directly or indirectly connected to a multi-stage gear set of the drive system and is used to receive the driving force of the drive system 3000 to achieve forward or reverse rotation of the second shaft member 220.

[0057] As shown in Figures 6-1 and 6-2, the second roller brush 200 further includes a second brush member 230, which is fitted to the outside of the second shaft member 220, and the second brush member 230 includes a second cylindrical member 231, which is fitted to 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 usually cylindrical and has a length substantially the same as the length of the second shaft member 220, the second cylindrical member 231 is usually compressible and is formed from, for example, elastic plastic or rubber material, and is convenient for fitting to the outside of the second shaft member 220. The second cylindrical member 231 usually has a certain thickness in order to improve the wear resistance of the entire second brush member 230. Normally, there is no filler between the second cylindrical member 231 and the second shaft member 220, or at least a non-flexible or non-elastic filler is provided, and if a rigid filler is provided, the second shaft member is also rigid, so it is entirely possible to consider the rigid filler and the second shaft member as the same functional member, that is, the two rigid members together constitute the second shaft member, and its outer diameter is clearly 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 a second brush member 232, the second brush member 232 being a plurality of sheet structures, the second brush member 232 extending from the outer surface of the second cylindrical member 231 in a direction away from the second cylindrical member 231, and at least one second brush member 232 extending along the axial direction of the second cylindrical member 231 from one end of the second cylindrical member 231 to the other end of the second cylindrical member 231. The second brush member 232 may be in other forms such as blades or bristles.

[0058] In some embodiments, there are multiple second brush members 232, each second brush member 232 having a helical structure on the outer surface of the second cylindrical member 231, with the multiple second brush members 232 being substantially uniformly distributed along the circumferential direction of the second cylindrical member 231, and the helical 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; that is, if the shape of the second brush member 232 is a helical structure, the shape of the first brush member 132 is also a helical structure. By designing the second brush member 232 as a helical structure, when the front and rear roller brushes rotate opposite each other, debris can be easily picked up, preventing excessive impact force or damage to the second brush member 132, and improving its service life.

[0059] In some embodiments, there are multiple second brush members 232, each second brush member 232 having a V-shaped structure on the outer surface of the second cylindrical member 231, with multiple second brush members 232 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 pointing in the same direction along the circumferential direction of the second cylindrical member 231. The shape of the second brush member 232 is adapted to the shape of the first brush member 132; that is, 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, and by designing the second brush member 132 as a V-shaped structure, when the front and rear roller brushes rotate opposite each other, the tips of the V-shaped structures of the second brush member 232 interfere with the tips of the V-shaped structures of the first brush member 132, allowing debris to be easily picked up.

[0060] In some other embodiments, the second roller brush 200 can be realized in other forms, as shown in Figure 6-2, for example, the second roller brush 200 includes a second shaft rod 240, a second filler 250, and a second brush member 230, the structure of which can be described by referring to the above embodiments and will not be repeated here. The second shaft member described in the above embodiments consists of a second shaft rod 240 and a second filler 250, the second filler 250 is fitted onto the second shaft rod 240 so that the second filler 250 is coaxial with the second shaft rod 240, the cross-section of the second filler 250 is annular, and its inner ring shape matches the cross-sectional shape of the second shaft rod 240, the inner ring shape may be circular, square, polygonal, etc., and is not particularly limited here, and later the inner ring may be circular. Let us explain using the example of the case where the outer ring shape is generally circular, and the cross-section of the second filler 250 is annular. In this case, the cross-section of the second filler 250 has an inner diameter and an outer diameter. Its inner diameter is substantially the same as the diameter of the second shaft rod 240, realizing a seamless socket between the second filler 250 and the second shaft rod 240. Its outer diameter is substantially the same as the inner diameter of the second cylindrical member 231, realizing a seamless socket between the second filler 250 and the second cylindrical member 231. The second filler 250 is made of an incompressible material and has the property of not being substantially compressed inward even when biased, providing sufficient support force to the second brush member 230. The material of the second filler 250 may be a rigid material such as hard plastic, hard resin material, or metal material, and not all of these are listed. Furthermore, the second filler 250 is a hollowed-out material or structure having similar non-compressible properties, and may be, for example, a non-compressible keel structure in order to reduce the weight of the second roller brush, and not all such are listed.

[0061] In some other embodiments, the second filler 250 may be integrally molded with the second shaft rod 240, forming a single structure from a rigid material and reducing rotational clearance.

[0062] After the installation of the first roller brush 100 and the second roller brush 200 is complete, when the first roller brush 100 and the second roller brush 200 operate, their rotational speeds are the same but their rotational directions are opposite. For example, if the first roller brush 100 rotates counterclockwise, the second roller brush 200 rotates clockwise. During the rotation process, the first and second brush members are always in contact at the central position, meaning that the brush members of the previous layer are not separated, and the brush members of the next layer are already in contact. As the rotation continues, the brush members of the previous layer separate, and the brush members at both ends of the next layer come into contact in the center, forming a single diamond-shaped sealed air passage. As the brush members rotate, they collect debris in the center, and the debris is sucked into the dust box inside the device via the air duct 5400, thus achieving the cleaning objective. The synchronous rotation of the first and second roller brushes causes the diamond-shaped sealed air passage formed by the next layer of brush members to gradually shrink. As soon as the current sealed cleaning is complete, the next sealed cleaning begins immediately, meaning that the brush members at both ends of the next layer come into contact in the center 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.

[0063] In some embodiments, a plurality of second protrusions 2321 are provided on the surface of the second brush member 232. The plurality of second protrusions on the second brush member 232 are uniformly distributed along the stretching direction of the surface of the second brush member 232, and the plurality of second protrusions 2321 increase the frictional force between the brush member and the dirt, allowing for cleaner cleaning.

[0064] In some other embodiments, the first brush member in the first roller brush 100 and the second brush member in the second roller brush 200 may be different and should be specifically set according to the cleaning needs. Selectively, the first roller brush 100 may be a bristle brush and the second roller brush 200 may be an adhesive brush. Such a combination satisfies the cleaning effect of various floor surface environments. That is, the bristle brush has good cleaning ability for hair or fine, soft fibers, and the first roller brush can clean dirt from 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.

[0065] 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 in order to avoid a significant decrease in the passability of large particles of debris due to the incompressible hard core structure, the blades of the second roller brush need to be set longer than the length of the blades of the first roller brush, and the distance from the outer diameter of the second shaft member (hard core) of the second roller brush to the floor surface is less than or equal to the distance from the outer diameter of the first filler (soft core) of the first roller brush to the floor surface, and in this case, the outer diameter of the second shaft member needs to 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 smaller, causing relatively large hard debris to get stuck between the first and second roller brushes. Moreover, if the outer diameter of the second shaft member (hard core) of the second roller brush becomes even smaller, when the outer diameters 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 second brush member becomes too large and exceeds a reasonable range, the second brush member will protrude, weakening its cleaning power, increasing the surface area of ​​the second brush member, making it easier for dust to adhere to it, and negatively affecting the cleaning effect. Therefore, in order to ensure the cleaning effect, the length of the second brush member should not become too large, and at the same time, the outer diameter of the corresponding second shaft member (hard core) should not become too small. The outer diameter of the second shaft member should be larger than the inner diameter of the first filler, thereby keeping the length of the second brush member within an appropriate range.

[0066] In some embodiments, the plane on which the lowest point of the first filler is located is lower than the plane on which the lowest point of the second shaft member is located. Because the first filler is compressible, the plane on which the lowest point of the first filler is located needs to be lower than the plane on which the lowest point of the second shaft member is located in order to ensure that debris can pass below the first and second roller brushes. When the first roller brush is a front roller brush, debris can pass through because the first filler is compressible. When the second roller brush is a front roller brush, debris can still pass through because the lowest point of the second shaft member is high. At the same time, because the first roller brush is a rear roller brush and is close to the floor, debris from below the first roller brush is blocked, improving the cleaning efficiency of the cleaning device.

[0067] In some embodiments, the maximum distance the first brush member extends from the outer surface of the first cylindrical member in a direction away from the first cylindrical member is smaller than the maximum distance the second brush member extends from the outer surface of the second cylindrical member in a direction away from the second cylindrical member. 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 greater than or equal to the length of the second brush member, the overall size of the first roller brush increases, and if the assembly positions of the first roller brush and the second roller brush are substantially on the same horizontal plane, the amount of interference between the first brush member and the floor surface increases. This results in increased noise generated when the first brush member strikes the floor surface, increased resistance during the running process of the automatic cleaning device, and inconvenience in performing the cleaning task of the automatic cleaning device.

[0068] In some embodiments, the outer casing of the first brush member, formed from the maximum distance extending from the outer surface of the first cylindrical member in a direction away from the first cylindrical member, forms the outer diameter of the first roller brush, and the outer casing of the second brush member, formed from the maximum distance extending from the outer surface of the second cylindrical member in a direction away from the second cylindrical member, forms 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. If the assembly positions of the first and second roller brushes are substantially on the same horizontal plane or only slightly different, the first and second roller brushes have sufficient interference with the floor surface, and the cleaning effect of the double brush can be achieved. Furthermore, for an automatic cleaning device in a non-operating state, the stored double roller brush is housed substantially flat within the cleaning module, and the complexity of design and manufacturing caused by design inconsistencies between the front cleaning brush mounting position and the rear cleaning brush mounting position can also be reduced.

[0069] In some embodiments, the distance between the central axis of the first roller brush and the central axis of the second roller brush is less than or equal to the outer diameter of the first and / or second roller brushes. For example, the distance between the central axis of the first roller brush and the central axis of the second roller brush is less than the outer diameter of the first and / or second roller brushes. If the outer diameters of the first and / or second roller brushes are substantially the same, and the distance between the central axis of the first and / or second roller brushes is greater than the outer diameter of the first and / or second roller brushes, the interference effect between the first and second brush members is eliminated, the cleaned debris is not wrapped around the first and second roller brushes, and the overall cleaning effect of the cleaning device is affected.

[0070] In some embodiments, the outer casing of the first brush member formed by the maximum distance extending from the outer surface of the first cylindrical member in a direction away from the first cylindrical member forms the outer diameter of the first roller brush, and the outer casing of the second brush member formed by the maximum distance extending from the outer surface of the second cylindrical member in a direction away from the second cylindrical member forms the outer diameter of the second roller brush, and the distance between the central axis of the first roller brush and the central axis of the second roller brush is less than or equal to half the sum of the outer diameters of the first and second roller brushes. For example, if the distance between the central axis of the first roller brush and the central axis of the second roller brush is less than half the sum of the outer diameters of the first and second roller brushes, and the outer diameters of the first and / or second roller brushes are not equal, then if the distance between the central axis of the first and second roller brushes is greater than half the sum of the outer diameters of the first and second roller brushes, the interference effect between the first and second brush members is eliminated, the cleaned debris is not wrapped between the first and second roller brushes, and the overall cleaning effect of the cleaning device is affected.

[0071] In some embodiments, the minimum distance from the inner diameter of the first packing to the outer diameter of the second shaft member is greater than the difference between the inner and outer diameters of the first packing. If the inner diameter of the first packing 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 packing to the outer diameter of the second shaft member becomes too small. This reduces the flexible space that can pass between the front and rear brushes, causing slightly larger debris, and consequently flexible debris, to get caught between the two brushes and be unable to enter or exit the dust box. The limiting distance is when the outer diameter of the second shaft member contacts the outer diameter of the first packing. In this case, even though the first packing still has compressible space, the gap between the first packing and the second shaft member disappears. As a result, the suction force of the fan for debris is blocked by the first packing and the second shaft member, significantly reducing the effectiveness of debris entering and exiting the dust box, and decreasing cleaning efficiency.

[0072] In some embodiments, the first and second roller brushes are arranged front to back along the direction of travel of the automatic cleaning device. In this case, a double brush assembly structure is formed in which the front side is soft and the rear side is hard. To prevent debris from leaking from the rear, the plane on which the lowest point of the outer casing of the second roller brush is located is lower than the plane on which the lowest point of the outer casing of the first roller brush is located, thereby increasing the amount of interference between the second brush member and the floor surface and preventing debris from leaking from below the second roller brush.

[0073] In some embodiments, the second roller brush and the first roller brush are arranged front to back along the direction of travel of the automatic cleaning device. In this case, a double brush assembly structure is formed in which the front side is hard and the rear side is soft. To prevent debris from leaking from the rear, the plane where the lowest point of the outer casing of the first roller brush is located is lower than the plane where the lowest point of the outer casing of the second roller brush is located, thereby increasing the amount of interference between the first brush member and the floor surface and preventing debris from leaking from below the first roller brush.

[0074] In the automatic cleaning device provided by the embodiments of this disclosure, a double roller brush structure is provided, comprising a first roller brush and a second roller brush. By making the first filler in the first roller brush an elastic member and the second axial member in the second roller brush a rigid member, the automatic cleaning device can effectively clean the floor surface with two types of roller brushes, one soft and one hard. This improves the passage of debris between the first and second roller brushes, and allows for a rational setting of 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.

[0075] The specific structure of the first roller brush (also called a soft brush or cleaning brush) described above will be explained in detail below with reference to Figures 7 to 12. The same structure and function have the same technical effect and will not be repeated here.

[0076] Figure 7 is an exploded view of the three-dimensional structure of an example of a cleaning brush provided by this disclosure. Figure 8 is a three-dimensional view of an example of the end member of the cleaning brush of Figure 7. Figure 9 is a three-dimensional view of the end member of the cleaning brush of Figure 8 from a different angle.

[0077] Referring to Figures 7 to 9, an embodiment of the present disclosure provides a cleaning brush 100. The cleaning brush 100 includes a shaft 110 including a shaft body 113 and first end 111 and second end 112 on both sides 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 the drive mechanism of the cleaning device.

[0078] Specifically, the first end member 120 has at least one first introduction portion 1221, and the first end portion 111 has at least one first fitting portion 1111. 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 the first end member 120 is attached to the first end portion 111 only by a circumferential assembly method, that is, the first end member 120 and the shaft 110 are assembled in a single mounting direction.

[0079] In this specification, the meaning of "circumferential assembly method" is as follows: When the two assemblies are rotated 360 degrees relative to each other, if N types of assembly methods exist, it is determined that both have N types of circumferential assembly methods, where N is 1 or greater.

[0080] As shown in Figure 8, the first end member 120 includes a first guide sleeve 122, which is configured to accommodate the first end 111, and the at least one first introduction portion 1221 is provided on the inner circumferential wall of the first guide sleeve 122 and is a projection that protrudes inward from the inner circumferential wall of the first guide sleeve 122. The first end member 120 is attached to the first end 111 on the drive side.

[0081] 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 extends spirally while rotating spirally along the inner circumferential wall, and the first introduction portion 1221 has a rotational direction, for example, a rotational direction in which it rotates clockwise (or counterclockwise) around the axis z of the shaft rod 110.

[0082] In this embodiment, the first introduction portion 1221 is a projection that protrudes from the inner circumferential wall of the first guide sleeve 122, but it is not limited to this, and it is sufficient if one of the first introduction portion 1221 and the first fitting portion 1111 is a projection and the other is a recess.

[0083] In the example shown in Figure 8, there are two first introduction sections 1221, and the two first introduction sections 1221 are of different sizes. The difference in size of the two first introduction sections effectively ensures that the first end member 120 and the drive-side end of the shaft have only one mounting direction, allowing components such as the cleaning brush blade to be assembled in a single mounting direction.

[0084] In this embodiment, the number of first introduction units 1221 is two, but is not limited thereto. In other embodiments, the number of first introduction units 1221 may be three or more. The above is described as an example of selectable features and should not be understood as limiting the disclosure.

[0085] As can be seen from Figure 9, a first fitting portion 1111 corresponding to the first introduction portion 1221 is provided on the outer circumference of the first end portion 111 of the shaft rod 110. In this example, the two first fitting portions 1111 are provided on the outer circumference of the first end portion 111, and the two first fitting portions 1111 correspond one-to-one with the two first introduction portions 1221. The first fitting portion 1111 is a groove that is recessed inward from the outer circumferential surface of the first end portion 111, and the first introduction portion 1221 is fitted into the first fitting portion 1111 to form a guide fitting structure, so that the first end member 120 is attached to the first end portion 111 by a single circumferential assembly method.

[0086] By adding two different sized first introduction sections to the inner circumferential wall of the first guide sleeve, introduction and installation can be performed more effectively, the first end member can be attached to the first end using only a single circumferential assembly method, improving the ease of installation of the end member and enhancing the stability of the installation structure.

[0087] A marking portion 1223 (see Figure 8) is optionally provided on the outer circumference of the first guide sleeve 122, and is configured to mark the position of the first introduction portion 1221 on the outer circumference of the first guide sleeve 122, marking the rotational assembly direction when attaching the first end member 120 to the first end 111 of the shaft rod 110, so that the first introduction portion 1221 is aligned with the first fitting portion 1111 and assembled.

[0088] As shown in Figures 8 to 10, a first locking portion 1222 is provided on the first guide sleeve 122, which 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 portion member 120 to the first end portion 111.

[0089] Referring to Figures 9 and 10, the first end member 120 further includes a first guide shaft 123, the first guide shaft 123 extending along the axis of the first guide sleeve 122, and having 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 110 and configured to accommodate the first guide shaft 123.

[0090] As shown in Figures 9 and 10, the end face of the first assembly structure 121 away from the shaft has a regular polygon, and the number of sides of the regular polygon is a divisor of the number of brush members. In other words, the number of sides of the regular polygon on the outer end face of the first end member corresponds to the number of sets of brush members in the automatic cleaning device. For example, the number of sides N of the regular polygon is a divisor of the number of sets (e.g., 4 sides and 8 sets of blades, e.g., 4 sides and 4 sets of blades), so that after the cleaning brush is attached to the equipment of the automatic cleaning device according to N directions, the directions of the members such as blades in the brush members of the cleaning brush are aligned.

[0091] In this embodiment, the sides of the regular polygon are N straight sides, but this is not limited to this, and in other embodiments, they may be adjusted to, for example, 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.

[0092] In the example shown in Figure 7, the cleaning brush 100 further includes a brush member 130 provided coaxially with the shaft 110, the brush member 130 including a cylindrical member 131 fitted onto the outer circumference 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 provided along the circumferential direction of the cylindrical member.

[0093] Specifically, the brush member 131 includes a first brush member. For example, the first brush member is V-shaped and includes five sets of first brush members.

[0094] In other examples, the brush member may further include a second brush member or a third brush member, and the second brush member, third brush member and first brush member may have different shapes, lengths, etc. Furthermore, the structures of different sets of brush members may be substantially the same, and each set of brush members may include one or more blades, and if it includes multiple blades, the structures of the multiple blades are usually not exactly the same.

[0095] Specifically, a flexible filler (not shown) is filled between the brush member 130 and the shaft rod 110, and the flexible filler covers the outer circumference of the shaft rod body, leaving the first end and the second end exposed.

[0096] Furthermore, the first end member 120 further includes a first blocking structure 125, which is provided between the first assembly structure 121 and the first guide sleeve 122, and is used to prevent entangled material from excessively extending away from the brush member and from excessively extending 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. As shown in Figure 8, the first blocking structure 125 includes a first wall, a recess, and a second wall, extending from the outside to the inside along the axial direction of the cleaning brush, with the thickness of the first wall being greater than the thickness of the second wall. By providing the blocking structure, entangled material such as dirt can directly become entangled in the blocking structure of the first end member, preventing entanglement of the material on the shaft, and allowing the entangled material to be removed along with the removal of the cap member when the end member is removed.

[0097] The first introduction portion within the first guide sleeve of the first end member and the drive-side end of the shaft form a guide fitting structure, and are fitted to the first lock fitting portion of the shaft end 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, and the mounting structure of the end member and shaft can be further optimized, thereby further optimizing the overall structure of the cleaning brush.

[0098] Figure 11 is an exploded view of the three-dimensional structure of the cleaning brush shown in Figure 7 from a different angle, and Figure 12 is an exploded view of the local structure of the second end member and shaft of the cleaning brush shown in Figure 7 from one angle.

[0099] Referring to Figures 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, and the second assembly structure 141 is rotatable relative to the shaft and is rotatably connected via the second assembly structure 141 to other structures of the cleaning device (e.g., the main body of the device).

[0100] As shown in Figures 11 and 12, the second end member 140 has at least one second introduction portion 1421, and the second end 112 has at least one second fitting portion 1121, and the at least one second introduction portion 1421 is fitted into the at least one second fitting portion 1121 to form a guide fitting structure, and the second end member 140 is attached to the second end by a plurality of circumferential assembly methods.

[0101] 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, and is specifically spiral in shape, extending by rotating spirally along the inner circumferential wall, and the second introduction portion 1421 has a rotational direction, for example, a rotational direction of z-clockwise (or counterclockwise) around the axis of the shaft rod 110, thereby forming a second introduction direction. In this example, the second introduction direction is the same as the first introduction direction.

[0102] In this embodiment, the first introduction direction is the same as the second introduction direction, but the invention is not limited thereto. In other embodiments, the rotation direction of the first introduction portion may be, for example, non-helic or linear. Furthermore, in other embodiments, the second introduction direction may be different from the first introduction direction. The above is described as an example of selectable options and should not be understood as limiting the present disclosure.

[0103] As shown in Figure 12, the at least one second introduction portion 1421 includes two second introduction portions 1421, the shape and size of both second introduction portions 1421 are the same, and the second end member is attached to the second end portion 112 by two types of circumferential assembly methods.

[0104] Preferably, when the introduction direction of the first introduction portion 1221 and the second introduction portion 1421 is 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.

[0105] The size of the two second guide portions on the driven end is between the size of the two first introduction portions on the drive 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 components such as blades after the cleaning brush is attached.

[0106] In other examples, the number of second introductions may be three or more. The above is described as an optional example and should not be understood as limiting the disclosure. Furthermore, with respect to the first and second end members, preferably, two first introductions of different sizes are provided on the drive side, because the drive side requires a mounting angle, so the second end member on the driven side does not need to be designed to be a different size, because the second assembly structure on the driven side (specifically the bearing structure) can rotate freely relative to the shaft, and after the bearing structure is assembled to the main body of the automatic cleaning device, the remaining part of the cleaning brush can rotate freely relative to the bearing structure, and there is no assembly angle requirement on the driven side, so in other examples, the sizes of the second introductions may be the same.

[0107] The first introduction portion 1221, the second introduction portion 1421, the first fitting portion 1111, and the second fitting portion 1121 form a guide fitting structure, thereby enabling a more efficient guide fitting structure. By making the two first introduction portions 1221 and the second introduction portion and the first introduction portion different in size, the first end member can be attached to the first end using only a single circumferential assembly method, and the second end member can be attached to the second end using multiple circumferential assembly methods, thereby enabling the precise determination of the mounting angles of the first end member, the second end member, and the shaft, and enabling a more efficient mounting structure.

[0108] Furthermore, a second locking portion 1422 is provided on the outer circumference of the second guide sleeve 142 of the second end member 140. This second locking portion 1422 is, for example, a groove recessed inward from the outer surface of the second guide sleeve 142, and the second locking portion 1422 may be a through hole penetrating the second guide sleeve 142. Correspondingly, a first locking fitting portion 1123 is provided on the second end portion 112, and the second locking portion 1422 is fitted into the second locking fitting portion 1123, locking the second end member 140 to the second end portion 112 and forming a locking fitting structure.

[0109] As shown in Figure 12, the second end member 140 further includes a second guide shaft 144, the second guide shaft 144 extending along the axis of the second guide sleeve 142, and a second guide hole (not shown) is provided on the end face of the second end 112 away from the first end 111, the second guide hole is coaxial with the shaft rod 110 and is configured to accommodate the second guide shaft 144.

[0110] 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 shaft 110.

[0111] 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 debris can directly become entangled in the blocking structure of the second end member, preventing them from becoming entangled in the shaft, and allowing the entangled objects to be removed along with the cap member when the end member is removed.

[0112] Optionally, the second guide sleeve 142 is further provided with a marking portion 1423 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 portion 112, and to align and assemble the second introduction portion and the second fitting portion.

[0113] Furthermore, the second assembly structure 141 of the second end member 140 is configured to have a polygonal shape corresponding to the number of 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.

[0114] 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 distinguished more easily and the ease of installation can be improved.

[0115] The cleaning brush of this disclosure ensures that the drive end has a relatively constant mounting direction by setting the introduction member of the end member of the drive end to have a single circumferential assembly method, allowing for easy control of the mounting angle of the roller brush. This is particularly beneficial in several scenarios where there are certain preset requirements for the direction or alignment direction of the sub-members of the roller brush, especially the blades. For example, it is suitable for those scenarios where two of the roller brushes of this invention are used to form a double brush system, and each blade has certain alignment requirements.

[0116] The cleaning brush of this disclosure forms a guide fitting structure with the introduction portion of the inner wall of the guide sleeve of the end member and the end of the shaft, and a lock fitting structure with the lock portion of the outer circumference of the guide sleeve and the end of the shaft. Through the cooperative fitting of the guide fitting structure and the lock fitting structure, more efficient introduction and installation is achieved, a more efficient guide fitting structure is realized, a more efficient foolproof installation structure is realized, the ease of installation of the end member and the stability of the installation structure are improved, and the installation structure of the end member and shaft is optimized, thereby optimizing the overall structure of the cleaning brush.

[0117] Furthermore, by making the two first introduction sections different in size, and the second introduction section and the first introduction section different in size, the first end member can be attached to the first end using only a single circumferential assembly method, and the second end member can be attached to the second end using multiple circumferential assembly methods. This allows for precise determination of the mounting angles of the first end member, the second end member and the shaft, resulting in a more efficient mounting structure.

[0118] Furthermore, by providing markings on the outer circumference 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 and second ends of the shaft, the alignment and assembly of the first introduction part and the first fitting part are effectively ensured, and the alignment and assembly of the second introduction part and the second fitting part are more effectively ensured.

[0119] Furthermore, since the number of sides of the regular polygon on the outer end face of the first end member is a divisor of the number of brush members in the automatic cleaning device, after attaching the cleaning brushes to the device according to N directions, it is ensured that the directions of the blades and other components within the brush members of the cleaning brushes are consistent.

[0120] Furthermore, by providing a blocking structure on the end member, entangled objects will directly become entangled in the blocking structure on the end member, effectively preventing entanglement of objects on the shaft.

[0121] The specific structure of the second roller brush (also called a hard brush or cleaning brush) described above will be explained in detail below with reference to Figures 13 to 21. The same structure and function have the same technical effect and will not be repeated here.

[0122] Figure 13 is an exploded view of the three-dimensional structure of an example of a cleaning brush provided by this disclosure. Figure 14 is a schematic cross-sectional view of the cleaning brush of Figure 13. Figure 15 is a three-dimensional view of an example of the end member of the cleaning brush of Figure 13. Figure 16 is a schematic three-dimensional view of an example of the shaft fitting member of Figure 13. Figure 17 is a schematic three-dimensional view of an example of the guide fitting structure of the end member and shaft fitting member of Figure 13. Figure 18 is an exploded view of the guide fitting structure of Figure 17.

[0123] Referring to Figures 13 to 18, the cleaning brush 200 includes a shaft 210 having a first end 211 and a second end 212 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 further includes an end member 2200 coaxially fitted to the outer circumference of the shaft 210 and fitted and attached to the fitting member 213, and an assembly structure 221 is provided on the side of the end member 2200 away from the fitting member 213.

[0124] In some embodiments, as shown in Figure 14, at least one of the first and second ends of the shaft has a housing space, at least a portion of the shaft is solid, the housing space includes a first space segment, the first space segment is configured to house at least a portion of the guide rod, the housing space further includes a second space segment, a guide portion is provided on the guide rod, the second space segment has a structure that conforms to the shape of the guide portion of the guide rod, and is fitted and connected to the guide portion. The housing space further includes a third space segment, a guide shaft is further provided on the end member, the third space segment is configured to house at least a portion of the guide shaft. The inner diameter of the first space segment is larger than the inner diameter of the second space segment, and / or the inner diameter of the second space segment is larger than the inner diameter of the third space segment.

[0125] Specifically, the assembly structure 221 includes, for example, a bearing structure 221'' and a transmission structure 221'. When the end member 2200 is a drive-side end member, i.e., when the end member 2200 is a first-side end member 2200' connected to the drive unit of the cleaning module, the assembly structure 221 is, for example, a transmission structure 221'. When the end member 2200 is a driven-side end member, i.e., when the end member 2200 is a second-side end member 2200'' facing the first-side end member 2200', the assembly structure 221 is, for example, a bearing structure 221''.

[0126] The following explanation will primarily use the drive-side end member as an example to describe the connection and assembly relationship between the end member and the shaft, while the connection relationship between the driven-side end member and the shaft is similar.

[0127] As shown in Figure 14, a housing space 214 is provided on the end face of the end portion where the fitting member 213 is located, facing the end member 2200. The fitting member 213 is housed in the housing space 214, and a portion of the end member 2200 is inserted into the housing space 214 and fitted into the fitting member 213 for attachment.

[0128] Specifically, the end face of the fitting member 213 closest to the assembly structure 221 is further away from the assembly structure 221 than the opening 2141 of the housing space 214, as specifically shown in Figure 14. That is, the outer end face of the fitting member 213 is closer to the center of the shaft than the outer end face of the end to which the fitting member 213 belongs. The outer end face of the fitting member 213 is closer to the center of the shaft than the corresponding outer end face of the brush member.

[0129] Selectively, the end face of the brush member 230 closest to the assembly structure 221 is flush with the opening 2141 of the housing space 214, as specifically shown in Figure 14. On the one hand, the end of the brush member is effectively supported, maintaining a predetermined 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 from impact and deterioration of usability.

[0130] As shown in Figure 15, the end member 2200 includes a guide rod 222, which is located on the side of the assembly structure 221 closer to the shaft 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 fitting structure together with the fitting member 213.

[0131] 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 spirally shaped with a rotational direction, specifically, it extends spirally along the outer circumferential surface of the guide rod 222 (i.e., it extends while rotating spirally), and the guide portion 2221 has a rotational direction, for example, a clockwise (or counterclockwise) rotation around the axis of the shaft rod 210.

[0132] Referring to Figures 14 and 15, the end member 2200 includes a guide rod 222 and at least one guide portion 2221, where the guide portion 2221 is provided on the outer circumferential surface of the guide rod 222, and the plurality of guide portions 2221 are uniformly distributed in the circumferential direction of the guide rod 222, and the guide portions 2221 together with the fitting member 213 form a rotational fitting structure, as shown in Figures 14 and 17.

[0133] In the example shown in Figure 15, the guide portion 2221 is a projection 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, away from the assembly structure 221.

[0134] Specifically, there are multiple guide sections 2221. In the example in Figure 15, there are five guide sections 2221, and these five guide sections 2221 are all the same size.

[0135] In other examples, the number of guides may be three, four, six, or more, and the sizes of the guides may vary; these are described as optional examples and should not be understood as limiting the disclosure. Furthermore, regarding the method of forming the guides, the guides are grooves formed by etching inward from the outer circumferential surface of the guide rod; these are described as optional examples and should not be understood as limiting the disclosure. At least one of the shape, number, and size of the guides 2221 can be selected to differ.

[0136] Furthermore, the end member 2200 further includes a guide shaft 223, which extends from the guide rod 222 away from the assembly structure 221, and a buckle member 2231 is further provided at the end of the guide shaft 223 away from the guide rod 222. Furthermore, the guide rod 222 is an injection-molded product, and the guide shaft 223 is a metal part.

[0137] In this embodiment, one end of the guide shaft 223 closest to the assembly structure 221 is fitted into the guide rod 222.

[0138] Specifically, the guide shaft 223 further includes a buckle member 2231 provided along its outer circumferential surface, the buckle member 2231 being, for example, an annular groove, and the buckle member 2231 together with the fitting member 213 to form a snap-fastening fitting structure.

[0139] As shown in Figure 16, the fitting member 213 includes a fitting portion 2131 that conforms to the shape of the guide portion 2221, and the fitting portion 2131 has a helical groove that accommodates the guide portion 2221.

[0140] Specifically, the fitting member 213 includes a main body portion 2130, the main body portion 2130 has a cavity, the main body portion 2130 includes a fitting portion 2131 built into the cavity, the fitting portion 2131 is a helical groove extending along the inner wall of the cavity, the fitting portion 2131 together with the guide portion 2221 forms a rotational fitting structure, the guide rod of the end member and the fitting member form a rotational fitting mechanism, refer specifically to Figure 17.

[0141] In this example, the number of fitting portions 2131 is the same as the number of guide portions 2221, for example, five.

[0142] Regarding the shape of the fitting portion, in other examples the fitting portion may be a groove, and the guide portion may be a protrusion. Regarding the number of fitting portions, in other examples there may be three, four, six or more, and the number of guide portions may be the same as the number of fitting portions. The above is described as an example of selectable features and should not be understood as limiting the disclosure.

[0143] A guide portion is added to the outer surface of the guide rod, and the fitting member of the end member's guide rod and shaft form a rotational fitting structure, enabling effective guide mounting and realizing an effective foolproof mounting structure, improving the ease of mounting the end member and enhancing the stability of the mounting structure. The rotational fitting structure formed by the end member's guide rod and the fitting member inside the shaft is fitted into a snap-lock fitting structure formed by the guide shaft and the fitting member, enabling more efficient guide mounting and realizing a more efficient foolproof mounting structure, further improving the ease of mounting the end member and further enhancing the stability of the mounting structure.

[0144] In the example shown in Figure 16, the fitting member 213 includes an extension portion 2132 that is connected to the main body portion 2130 and extends outward from the main body portion 2130, wherein the extension portion 2132 is closer to the center of the shaft 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.

[0145] As shown in Figures 17 and 18, a plurality of convex protrusions 21321 are provided uniformly distributed on the outer circumferential surface of the extension portion 2132, forming an uneven surface on the outer circumferential surface of the extension portion 2132. This is used to form a fitting structure that corresponds to the inside of the shaft 210 (i.e., the shape of the inside of the shaft), increasing the contact surface between the fitting member 213 and the inside of the shaft 210, allowing the fitting member 213 to be more effectively coupled within the housing space 214 of the shaft 210, thereby increasing the coupling strength of the coupling structure between the fitting member 213 and the shaft 210, and making the mounting more stable.

[0146] The coupling structure between the fitting member 213 and the shaft 210 may be a stepped fitting structure or the like. In other embodiments, the entire assembly or at least a portion of the fitting member 213 may be integrally molded with the shaft 210. The above is described as an optional example and should not be understood as limiting the disclosure.

[0147] As shown in Figure 17, a snap-fastening portion 21322 is provided at one end of the fitting member 213 closer to the shaft center, and the snap-fastening portion 21322 is closer to the shaft center than the convex projection 21321. The snap-fastening portion 21322 is, for example, a claw portion, and the snap-fastening portion 21322 and the buckle member 2231 (i.e., an annular groove portion or annular protruding structure) of the guide shaft 223 of the end member 2200 form a snap-fastening fitting structure.

[0148] In the example shown in Figure 13, a blocking structure 225 is provided on the end member 2200 and is used to prevent entangled material from extending excessively away from the cleaning brush. The blocking structure 225 is located on the side closer to the assembly structure 221 than to the guide rod 210 (i.e., on the side further away from the shaft center).

[0149] 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 rod 210, as shown in Figures 17 and 18.

[0150] In some embodiments, the outer diameter of the blocking structure 225 is greater than the inner and outer diameters of the housing space, the brush member includes a cylindrical member, the diameter of the cylindrical member is smaller than the diameter of the blocking structure. One end of the brush member closest to the shaft is within the axial projection range of the blocking structure 225, the first brush member has a first thin-walled portion which is substantially within the axial projection range of the blocking structure, and the second brush member has a second thin-walled portion which is outside the axial projection range of the blocking structure.

[0151] By providing a blocking structure on the end member, entangled objects will directly become entangled in the blocking structure on the end member, effectively preventing entanglement of objects on the shaft.

[0152] In another example, in the cleaning brush 200 shown in Figure 19, the end member 2200 includes a first end member 2200' and a second end member 2200'', which are fitted and attached to the fitting members 213 of the first end 211 and second end 212 of the shaft 210, respectively, the shaft 210 is a rigid member, the brush member 230 is directly fitted onto 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.

[0153] In this example, at least one of the shapes, number, and sizes of the first guide portion 2221' of the first end member 2200' (i.e., the end member 2200 in Figure 14) and the second guide portion 2221" of the second end member 2200” is different.

[0154] In selectable embodiments, the shape and size of the first guide portion 2221' of the first end member 2200' and the shape and size of the second guide portion 2221' of the second end member 2200” are the same, the number of first guide portions 2221' of the first end member 2200' is greater than the number of second guide portions 2221” of the second end member 2200” and the number of second guide portions 2221” of the second end member 2200” is not a divisor of the number of first guide portions 2221' of the first end member 2200'. For example, the number of first guide portions 2221' of the first end member 2200' is 5, and the number of second guide portions 2221” of the second end member 2200” is 2.

[0155] As shown in Figures 19 and 20, the first end member 2200' (i.e., the end member 2200 on the drive side, the left end shown in Figure 20) is attached to the first end 211 of the shaft 210, and the first end member 2200' includes a transmission structure 221', which is closer to the outside than the first blocking structure 225', and the end face shape of the transmission structure 221' is polygonal, for example, a regular polygon. The transmission mechanism 221' is connected to the drive mechanism of the automatic cleaning device.

[0156] In this example, the brush member 230 includes a cylindrical member fitted onto the outer circumference 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, wherein the plurality of brush members 232 are uniformly arranged along the circumferential direction of the cylindrical member.

[0157] In this example, the brush member 232 includes at least one first brush member of a certain size, for example, five sets of brush members, and each set of brush members includes two first brush members of different sizes, for example, the first brush members being V-shaped and spiral-shaped. The brush member 230 in this example is substantially the same as the brush member 230 in the example in Figure 13, so the description of the identical parts is omitted.

[0158] Specifically, the number of first guide portions 2221' of the first end member 2200' is a divisor of the number of brush members 232. For example, the number of first guide portions 2221' is 5, and the number of brush members 232 is a multiple of 5, such as 5 sets, 10 sets, etc., with each set containing 2 brush members or more brush members.

[0159] The number of the first guide portions 2221' is set to be a divisor of the number of sets of brush members 232, so that when the roller brush is attached to the roller brush frame, the brush members 232 have a specific mounting angle and the corresponding brush members of the two roller brushes cooperate and interfere with each other.

[0160] In the example shown in Figure 19, there are five first guide sections 2221' and five sets of the brush members 232.

[0161] As shown in Figure 20, the second end member 2200” is attached to the second end 212 of the shaft 210 (i.e., the driven end member, the right end shown in Figure 20), and the second end member 2200” includes an assembly structure (specifically a bearing structure 221”), the bearing structure 221” is rotatable relative to the shaft 210, and the rotation of the bearing structure 221” relative to the shaft connects to other structures of the cleaning device (e.g., the main body of the device).

[0162] Specifically, the first side end member 2200' is attached to the first fitting member 213' of the first end 211 inside the shaft 210, and the second side end member 2200'' is attached to the second fitting member 213'' of the second end 212 inside the shaft 210.

[0163] Furthermore, since the shaft and brush members in the example in Figure 18 are substantially the same in structure as those in the example in Figure 13, the explanation of the identical parts is omitted. In addition, since the first fitting member 213' in Figure 19 is substantially the same in structure as the fitting member 213 in Figure 16, the explanation of the identical parts is omitted.

[0164] In the example shown in Figure 19, the first end member 2200' includes a first guide rod 222', at least one first guide portion 2221', and a first guide shaft 223', where the first guide rod 222' is provided with a plurality of first guide portions 2221', and the first guide portion 2221' is a projection formed by etching a groove 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' away from the assembly structure 221'.

[0165] As shown in Figures 20 and 21, the second end member 2200" 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".

[0166] If, for selectable purposes, the shape of the first guide portion 2221' of the first end member 2200' and the shape of the second guide portion 2221" of the second end member 2200” are the same, then the number of first guide portions 2221' of the first end member 2200' and the number of second guide portions 2221" of the second end member 2200” are different.

[0167] Selectively, the number of first guide portions 2221' of the first end member 2200' is odd, and the number of second guide portions 2221" of the second end member 2200” is even. Preferably, the number of first guide portions 2221' of the first end member 2200' and the number of second guide portions 2221" of the second end member 2200” are not divisors of each other, so that an end member with fewer guide portions cannot be mistakenly fitted to a fitting member corresponding to an end member with more guide portions, and no end member can be mistakenly fitted, thereby achieving maximum foolproofness.

[0168] As shown in Figures 20 and 21, the second end 212 of the shaft rod 210 includes a second fitting member 213" that fits into the second guide portion 2221" of the second guide rod 222", and there are two of these second guide portions 2221" which are projections formed by etching grooves from 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".

[0169] Specifically, the second fitting member 213" is connected to the main body 2130" and includes an extension portion 2132" that extends outward from the main body 2130", and the outer diameter of the main body 2130" is larger than the outer diameter of the extension portion 2132". The main body 2130" has a cavity and includes a fitting portion 2131" built into the cavity, and the fitting portion 2131" is a helical groove that extends along the inner wall of the cavity, and the fitting portion 2131" and the second guide portion 2221" form a rotary fitting structure, and the guide rod of the second side end member and the fitting member form a rotary fitting mechanism.

[0170] As shown in Figures 20 and 21, a plurality of convex protrusions 21321" are provided uniformly distributed on the outer circumferential surface of the extended portion 2132" of the second fitting member 213", forming an uneven surface on the outer circumferential surface of the extended portion 2132", forming a fitting structure corresponding to the inside of the shaft 210 (i.e., the shape inside the shaft), increasing the contact surface between the second fitting member 213" and the inside of the shaft 210, allowing the second fitting member 213" to be more effectively coupled within the housing space of the shaft 210, increasing the coupling strength of the coupling structure between the second fitting member 213" and the shaft 210, and making the mounting more stable.

[0171] Furthermore, a snap-fastening portion 21322" is provided at one end of the second fitting member 213" that is closer to the shaft center, and the snap-fastening portion 21322" is closer to the shaft center than the convex projection 21321". The snap-fastening portion 21322" is, for example, a claw portion, and the snap-fastening portion 21322" and the buckle member 2231 (i.e., the annular groove portion) of the guide shaft 223 of the second end member 2200" form a snap-fastening fitting structure.

[0172] In the example shown in Figure 19, the first end member 2200' includes an assembly structure (specifically a transmission structure 221') and a first guide shaft 223', one end of the first guide shaft 223' being fitted onto the first guide rod 222', and the other end of the first guide shaft 223' being fitted into a first guide hole in the first end portion 211, the first guide hole being coaxially formed on the end face of the first end portion 211.

[0173] The assembly structure 221" of the second end member 2200" and the second guide rod 222" are separate structures. Specifically, one end of the second guide shaft 223" passes through the assembly structure of the second end member 2200" (specifically the bearing structure 221"), the other end of the second guide shaft 223" is fitted into the second guide hole of the second end 212, and the second guide hole is coaxially formed on the end face of the first end 211.

[0174] Optionally, a blocking structure 225' is provided on the first end member 2200', 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 end member 2200'', specifically between the assembly structure (specifically the bearing structure 221'') and the second guide rod 222''. Both blocking structures on the end members prevent the entangled material from extending excessively away from the brush member 230.

[0175] In this example, the outer end face of the first end member 2200' is set to the shape of a first polygon corresponding to the number of brush members 232. Specifically, the end face of the transmission structure 221' of the first end member 2200' that is away from the guide rod 222 has a regular polygon, and the number of sides of the regular polygon is the same as the number of first guide portions 2221' of the first end member 2200'. At the same time, the number of first guide portions 2221' of the first end member 2200' is a divisor of the number of brush members 232.

[0176] In this way, when the roller brush is attached to the roller brush frame, the brush member 232 may have a specific mounting angle. When there are multiple roller brushes of similar structure, this design is very advantageous for forming a blade-to-blade mating relationship between the multiple roller brushes, and is particularly suitable when it is necessary to align the blades of both roller brushes. By aligning the blades, synchronous operation, interference, or entanglement in a predetermined position can be achieved, and different cleaning effects can be achieved.

[0177] Compared with prior art, the cleaning brush of this disclosure forms a rotary fitting structure with the guide portion of the end member's guide rod and the fitting member inside the shaft, and is fitted into a snap-fastening fitting structure formed by the guide shaft and the fitting member. This allows for more efficient guide mounting, a more efficient foolproof mounting structure, further improvements in the ease of mounting the end member, and further improvements in the stability of the mounting structure.

[0178] Furthermore, by providing a blocking structure on the end member, entangled objects will directly become entangled in the blocking structure on the end member, effectively preventing entanglement of objects on the shaft.

[0179] In related technologies, automatic cleaning devices, such as sweeping robots, need to expel a large amount of debris in a short time during dust collection. As a result, larger particles of debris can get stuck between the two roller brushes, leading to dust collection failures. This necessitates frequent manual cleaning by the user, impacting the user experience. Therefore, avoiding debris clogging during dust collection, while ensuring that the cleaning performance of the roller brushes is not affected, is an urgent technical challenge that needs to be addressed.

[0180] This disclosure provides a roller brush and an automatic cleaning device, the roller brush including a shaft and a brush member detachably attached to the shaft. The brush member includes a cylindrical member fitted onto the shaft and configured such that the cylindrical member and the shaft are coaxial, and a first brush member extending from the outer surface of the cylindrical member in a direction away from the cylindrical member, the first brush member inclined in the circumferential direction of the cylindrical member along a first rotational direction, wherein a one-way blocking structure is provided at the end of the first brush member near the cylindrical member, and the first brush member is easily deformed in the direction opposite to the first rotational direction but is not easily deformed in the first rotational direction. The roller brush and automatic cleaning device provided by this disclosure are provided with a one-way blocking structure at the end of the first brush member near the cylindrical member, and the first brush member is easily deformed in the direction opposite to the first rotation direction but is difficult to deform in the first rotation direction, so that when the automatic cleaning device is cleaning normally the first brush member can provide a powerful cleaning action and is difficult to tip over or deform along the first rotation direction, and when collecting dust the first brush member is easily deformed along the direction opposite to the first rotation direction, so that large particles of dust do not get caught during dust collection, improving cleaning efficiency and providing a better user experience.

[0181] The following describes in detail the selectable embodiments of this disclosure, in conjunction with the attached drawings.

[0182] The roller brush provided by the embodiments of this disclosure can be adapted to a variety of automatic cleaning devices. For example, Figure 1 is a schematic diagram illustrating an exemplary automatic cleaning device, and the devices to which the roller brush provided by these embodiments can be adapted are not limited to this.

[0183] Referring to Figures 22 and 23, Figure 22 is a schematic diagram of the structure of a roller brush provided by some embodiments of the present disclosure, and Figure 23 is a schematic diagram of the cross-sectional structure of the roller brush in Figure 22. As shown in the figures, in some embodiments, the roller brush 100 includes a shaft 10 and a brush member 20, where the brush member 20 is provided on the shaft 10.

[0184] The shaft 10 is a rod-shaped structure, for example, an elongated cylindrical structure. Both ends of the rod-shaped structure are attached to the bottom of the main body of the automatic cleaning device, either directly or via connecting members, in a removable manner. In some embodiments, the shaft 10, together with a brush member 20 provided on the shaft 10, is attached to an elongated groove structure at the bottom of the main body of the device in a removable manner, and the elongated groove structure extends along the lateral axis Y direction.

[0185] The axis of the shaft 10 is considered to be the rotation axis of the roller brush 100, and after the roller brush 100 is attached to the main body of the automatic cleaning device, the drive system on the main body of the device can be driven to rotate the shaft 10, which may rotate clockwise or counterclockwise. When the shaft 10 rotates, other assemblies provided on the shaft 10, such as the brush members 20, can be rotated together to achieve the cleaning purpose.

[0186] The brush member 20 is provided on the shaft 10, and in some specific embodiments, the brush member 20 is detachably provided on the shaft 10 to facilitate daily cleaning and maintenance of the brush member 20.

[0187] The brush member 20 further includes a cylindrical member 23 and at least one first brush member 21.

[0188] The cylindrical member 23 is fitted onto the shaft 10, and is configured so that the cylindrical member 23 and the shaft 10 are coaxial. The cylindrical member 23 has an elongated cylindrical structure, and its length is substantially the same as the length of the shaft 10. The cylindrical member 23 is fitted tightly onto the shaft 10, and its inner diameter is substantially equal to or slightly smaller than the diameter of the shaft 10, so that the shaft 10 and the cylindrical member 23 do not move relative to each other during rotation. The cylindrical member 23 may be a flexible member or a rigid member.

[0189] The first brush member 21 extends from the outer surface of the cylindrical member 23 in a direction away from the cylindrical member 23. In some embodiments, the first brush member 21 is tilted along a first rotational direction in the circumferential direction of the cylindrical member 23, and Figure 24 shows the narrow angle α between the first brush member 21 and the cylindrical member 23 in the tangential direction, where α is less than 90°, and for example, in some embodiments, the range of the value of α is 45° to 85°. By setting the first brush member 21 to be tilted along a first rotational direction in the circumferential direction of the cylindrical member 23, a certain narrow angle is maintained between the first brush member 21 and the cleaning surface (such as a floor), which makes it easier to carry debris from the cleaning surface during the cleaning process and improves cleaning performance.

[0190] In some embodiments, the roller brush 100 further includes caps 30 provided at both ends of the shaft 10, and the roller brush 100 is attached to an elongated groove structure at the bottom of the main body of the automatic cleaning device via mounting members of the caps 30 that are separated from the shaft 10 side.

[0191] In some embodiments, the first brush member 21 extends from one end of the cylindrical member 23 to the other end of the cylindrical member 23. In some embodiments, the direction of extension of the first brush member 21 forms a constant narrow angle with the axis of the shaft rod 10. For example, the first brush member 21 is provided spirally on the outer surface of the cylindrical member 23, increasing the number of contact points between the first brush member 21 and the cleaning surface, achieving more sufficient contact between the first brush member 21 and the cleaning surface, easily carrying away debris on the cleaning surface, and improving cleaning performance.

[0192] In some embodiments, a one-way blocking structure is provided at the end of the first brush member 21 closest to the cylindrical member 23. The one-way blocking structure makes the first brush member 21 more easily deformed in the direction opposite to the first rotation direction and less easily deformed in the first rotation direction, that is, the deformation of the first brush member 21 when it rotates along the first rotation direction is smaller than the deformation when it rotates along the direction opposite to the first rotation direction. Typically, the first rotation direction is the direction of rotation of the brush member when the cleaning device performs cleaning work, and the direction opposite to the first rotation direction is the direction of rotation of the brush member when the cleaning device performs dust collection work. By providing the one-way blocking structure, when the cleaning device is cleaning normally, the first brush member 21 provides a strong cleaning action and is less likely to tip over and deform along the first rotation direction, and when collecting dust, the first brush member 21 is more easily deformed along the direction opposite to the first rotation direction, which can prevent clogging of large particles of dust during dust collection.

[0193] Referring to Figure 24, in some embodiments, the one-way blocking structure includes a support member 2111, which is used to prevent deformation of the first brush member 21 in a first rotational direction. Specifically, the support member 2111 is provided so that the end of the first brush member 21 closest to the cylindrical member 23 is on the first rotational direction side.

[0194] As shown in Figure 24, in some embodiments, the first brush member 21 has a first end and a second end, the first end being used to contact the surface to be cleaned when the automatic cleaning device is in operation, the thickness of the second end being smaller than the thickness of the first end, for example, the second end having a first thin-walled portion relative to the first end, and the orientation of the second end of the first thin-walled portion is substantially the same as the inclination direction of the first brush member with respect to the first roller brush radial direction.

[0195] In some embodiments, as can be understood by referring to Figure 24, the second brush member also has a first end and a second end, the first end of the second brush member is used to contact the surface to be cleaned when the automatic cleaning device is in operation, the thickness of the second end of the second brush member is smaller than the thickness of the first end of the second brush member, for example, the second end of the second brush member has a second thin portion relative to the first end of the second brush member, and the orientation of the second thin portion of the second end of the second brush member is substantially opposite to the inclination direction of the second brush member with respect to the radial direction of the first roller brush.

[0196] In some embodiments, the orientation of the second end of the second brush member of the second thin-walled portion is opposite to the orientation of the second end of the first brush member of the first thin-walled portion.

[0197] In some embodiments, the thickness of the end of the first brush member 21 closest to the cylindrical member 23 is less than a preset threshold, and the first brush member 21 tends to deform in both the first rotational direction and the direction opposite to the first rotational direction. Specifically, in some embodiments, a slit 216 is provided between the support member 2111 and the end of the first brush member 21 closest to the cylindrical member 23, and the thickness of the end of the first brush member 21 closest to the cylindrical member 23 is less than a preset threshold. When the first brush member 21 tends to deform in the first rotational direction, the support member 2111 supports the end of the first brush member 21 closest to the cylindrical member, and in this case the gap width of the slit 216 becomes smaller. When the first brush member 21 tends to deform in the direction opposite to the first rotational direction, the end of the first brush member 21 closest to the cylindrical member 23 moves away from the support member 2111, and in this case the gap width of the slit 216 becomes larger. By providing the slit 216, a certain gap is maintained between the first brush member 21 and the support member 2111, and the first brush member 21 has a certain degree of freedom in the first rotational direction, allowing it to deform appropriately and adapt to different cleaning surfaces. In actual cleaning work, the gap width of the slit 216 can be adjusted according to the cleaning surface, and the degree of deformation of the first brush member 21 in the first rotational direction can be adjusted to some extent to adapt to different cleaning surfaces.

[0198] In some embodiments, the first brush member 21 has an end close to the cylindrical member 23, and the support member 2111 has an inclined surface facing this end. Furthermore, the inclination angle β of the inclined surface with respect to the circumferential contact surface of the cylindrical member 23 is less than the inclination angle α of the first brush member 21 with respect to the circumferential contact surface of the cylindrical member 23, and the specific angles of the two can be adjusted according to the actual situation, and the first brush member 21 has a certain degree of freedom in the first rotational direction as well, and can deform appropriately to adapt to different cleaning surfaces. In actual cleaning work, the inclination angles α and β can be adjusted according to the cleaning surface, and the degree of deformation of the first brush member 21 in the first rotational direction can be adjusted to some extent to adapt to different cleaning surfaces.

[0199] The support member 2111 extends along the first brush member 21, close to the end of the cylindrical member 23. In some embodiments, the support member 2111 has a continuous structure, that is, it extends continuously along the end of the first brush member 21 close to the cylindrical member 23, and extends along one end of the cylindrical member 23 to the other end of the cylindrical member 23. In some other embodiments, referring to Figure 25, the support member 2111 has a discontinuous structure, that is, it is discretely arranged at the end close to the cylindrical member 23. When the support member 2111 has a discontinuous structure, material can be saved and the overall weight of the first brush member 21 can be reduced, and the discontinuous structure of the support member 2111 can reduce the amount of debris remaining in the gap between the first brush member 21 and the support member 2111.

[0200] Referring to Figure 26, in some embodiments, the one-way blocking structure includes a cut slit, for example, a cut slit 215 is provided at the end of the first brush member 21 closest to the cylindrical member 23 on the first rotation direction side. When the first brush member 21 tends to deform in the first rotation direction, the cut slit 215 contracts to prevent deformation of the first brush member 21 in the first rotation direction, and when the first brush member 21 tends to deform in the opposite direction to the first rotation direction, the cut slit 215 expands to allow the first brush member 21 to deform in the opposite direction to the first rotation direction. By providing the cut slit 215 on the first brush member 21, the deformation parameter of the first brush member 21 in the opposite direction to the first rotation direction is changed, making the first brush member 21 more prone to deformation in the opposite direction to the first rotation direction but less prone to deformation in the first rotation direction. Furthermore, the process of providing the cut slit 215 on the first brush member 21 is simple and convenient for widespread adoption and application.

[0201] Furthermore, the inclination angle of the cut slit 215 with respect to the circumferential contact surface of the cylindrical member 23 is less than the inclination angle of the first brush member 21 with respect to the circumferential contact surface of the cylindrical member 23. By providing different inclination angles, the first brush member 21 has a certain degree of freedom in the first rotational direction and can deform appropriately to adapt to different cleaning surfaces. In actual cleaning work, the inclination angle α and the inclination angle of the cut slit 215 with respect to the circumferential contact surface of the cylindrical member 23 can be adjusted according to the cleaning surface, and the degree of deformation of the first brush member 21 in the first rotational direction can be adjusted to some extent to adapt to different cleaning surfaces.

[0202] In some embodiments, protruding points 213 are provided on the surface of the first brush member 21. In some embodiments, a plurality of protruding points 213 are provided, and the plurality of protruding points 213 are arranged along the extending direction of the first brush member 21, and the position of the protruding points 213 is away from the cylindrical member 23 and close to the cleaning surface. By providing the protruding points 213, the contact area between the first brush member 21 and the debris can be increased, improving the ability of the first brush member 21 to carry debris from the cleaning surface and improving the cleaning effect of the first brush member 21.

[0203] As can be understood, the number of the first brush members 21 may be multiple, and these multiple first brush members 21 are uniformly distributed in the circumferential direction of the cylindrical member 23. When performing cleaning work, the multiple first brush members 21 can work together to increase the contact area between the brush members and the cleaning surface, thereby improving cleaning efficiency.

[0204] In some embodiments, the brush member 20 further includes a second brush member 22. The second brush member 22 extends from the outer surface of the cylindrical member 23 in a direction away from the cylindrical member 23. In some embodiments, the second brush member 22 is tilted in the circumferential direction of the cylindrical member 23 along a first rotational direction, and the range of the tilt angle may be 45° to 85°. By setting the second brush member 22 to tilt in the circumferential direction of the cylindrical member 23 along a first rotational direction, there is a certain narrow angle between the second brush member 22 and the cleaning surface, which makes it easier to carry debris from the cleaning surface during the cleaning process and improves cleaning performance.

[0205] In some embodiments, the second brush member 22 extends from one end of the cylindrical member 23 to the other end of the cylindrical member 23. In some embodiments, the direction of extension of the second brush member 22 forms a constant narrow angle with the axis of the shaft rod 10. For example, the second brush member 22 is provided spirally on the outer surface of the cylindrical member 23, increasing the number of contact points between the second brush member 22 and the cleaning surface, allowing the second brush member 22 to make more sufficient contact with the cleaning surface, easily carrying away debris on the cleaning surface and improving cleaning performance.

[0206] As can be understood, the number of the second brush members 22 may be multiple, and these multiple second brush members 22 are uniformly distributed in the circumferential direction of the cylindrical member 23. Furthermore, the first brush members 21 and the second brush members 22 are provided alternately and uniformly in the circumferential direction of the cylindrical member 23. For example, the brush members 20 of the roller brush 100 include 10 brush members, 5 of which are first brush members 21 and 5 of which are second brush members 22, and the first brush members 21 and the second brush members 22 are provided alternately and uniformly in the circumferential direction of the cylindrical member 23.

[0207] In some embodiments, the length of the second brush member 22 extending away from the cylindrical member 23 is greater than the length of the first brush member 21 extending away from the cylindrical member 23, and the thickness of the brush body of the second brush member 22 is less than the thickness of the brush body of the first brush member 21. That is, the first brush member 21 is relatively short and thick, and the second brush member 22 is relatively long and thin. When the first brush member 21 is used to clean somewhat large debris such as fruit shells and particulate matter, it can exert a powerful cleaning force. When cleaning flat and hard surfaces such as tiles and flooring, the first brush member 21 does not come into contact with the cleaning surface. When cleaning flat and hard surfaces such as tiles and flooring, the second brush member 22 comes into contact with the floor surface, striking and picking up dust, hair and other debris to be cleaned, and sucking it into the dust box. The contact force between the second brush member 22 and the floor surface is small, resulting in low noise during daily cleaning. When cleaning carpets of a certain thickness, both the first brush member 21 and the second brush member 22 come into contact with the carpet surface. In this case, the relatively thick first brush member 21 plays an important role in striking and removing dust and hair hidden in the carpet, thereby improving the cleaning effect.

[0208] In some embodiments, the thickness of the end of the second brush member 22 that is away from the cylindrical member 23 is greater than the thickness of the end of the second brush member 22 that is closer to the cylindrical member 23. The second brush member 22 has better deformation parameters at the end closer to the cylindrical member 23, and the second brush member 22 can be deformed according to different cleaning tasks.

[0209] In some embodiments, the cylindrical member 23 is incompressible after it is fitted onto the shaft 10. That is, the roller brush 100 has a rigid brush structure. The shaft 10 is, for example, a rigid rod member, and the cylindrical member 23 is incompressible after it is fitted onto the rigid shaft 10. That is, at least a portion of the surface of the brush member supported by the shaft is incompressible, for example, the entire surface of the brush member supported by the shaft is incompressible.

[0210] In some embodiments, the automatic cleaning device includes a first roller brush and a second roller brush, the first shaft member having a support surface that contacts and supports the first brush member, and at least a portion of the support surface of the first shaft member is incompressible, for example, the entire support surface of the first shaft member is incompressible.

[0211] In some embodiments, the second roller brush includes a second shaft member and a second brush member, the second shaft member having a support surface that contacts and supports the second brush member, and at least a portion of the support surface of the second shaft member is incompressible, for example, the entire support surface of the second shaft member is incompressible.

[0212] In some embodiments, the support surface at the axial end of the first shaft member is compressible, while the remaining portion is not compressible.

[0213] In some embodiments, the support surface at the axial end of the second shaft member is compressible, while the remaining portion is not compressible.

[0214] In some embodiments, the support surface at the axial center of the first shaft member is compressible, while the remaining portion is not compressible.

[0215] In some embodiments, the support surface at the axial center of the second axis member is compressible, while the remaining portion is not compressible.

[0216] In some embodiments, the area of ​​the compressible portion of the support surface of the first axial member is smaller than the area of ​​the non-compressible portion.

[0217] In some embodiments, the area of ​​the compressible portion of the support surface of the second axial member is smaller than the area of ​​the non-compressible portion.

[0218] In some embodiments, the support surface of at least a portion of the axial length range of the first shaft member has both a compressible portion and a non-compressible portion in the circumferential direction.

[0219] In some embodiments, the support surface of the second shaft member within at least a portion of its axial length range has both a compressible portion and a non-compressible portion in the circumferential direction.

[0220] In some embodiments, the support surface of the first shaft member has a length in the axial direction of the first shaft member that is smaller than that of the first brush member.

[0221] In some embodiments, the axial length of the support surface of the second axis member is smaller than that of the second brush member. In some embodiments, the automatic cleaning device has two roller brushes simultaneously, with the cylindrical member of one roller brush being compressible and the cylindrical member of the other roller brush being non-compressible, and a unidirectional blocking structure may be provided on at least one of the two roller brushes as needed, and in some embodiments, the structure is provided only on the roller brush whose cylindrical member is non-compressible, slightly reducing the need for the compressible roller brush to solve the corresponding problem. Of course, the blocking structure can also be used selectively depending on the specific material of the compressible roller brush, especially if the material is hard or has relatively weak compressibility.

[0222] The roller brush and automatic cleaning device provided by this disclosure are provided with a one-way blocking structure at the end of the first brush member near the cylindrical member, so that the first brush member is easily deformed in the direction opposite to the first rotation direction but is difficult to deform in the first rotation direction, so that when the automatic cleaning device is cleaning normally the first brush member provides a strong cleaning action and is difficult to deform along the first rotation direction, and when collecting dust the first brush member is easily deformed along the direction opposite to the first rotation direction, so that when collecting dust the first brush member is difficult to deform with large particles of dust, cleaning efficiency is improved and a better user experience can be obtained.

[0223] In related technologies, there are double-roller brush models for automatic cleaning devices, such as sweeping robots. In this double-roller brush model, the two roller brushes, one in the front and one in the back, enhance the cleaning capacity of the automatic cleaning device. However, the blades of the two roller brushes do not interfere with each other, and a predetermined gap of size always exists between the two roller brushes, allowing dust on the operating surface to be sucked into the air duct. There is a need to further improve the dust collection effect of automatic cleaning devices.

[0224] This disclosure provides an automatic cleaning device comprising a mobile platform configured to move on an operating surface, and a cleaning module assembled on the mobile platform and configured to clean the operating surface, wherein the cleaning module comprises a first roller brush and a second roller brush, the first roller brush being provided along a first direction perpendicular to the axis of the mobile platform, the first roller brush comprising a first long brush member, the second roller brush being provided alongside the first roller brush, the second roller brush comprising a second long brush member, and an air duct being provided on the side of the first and second roller brushes away from the operating surface and configured to guide the collection of dust, wherein when the automatic cleaning device performs a cleaning operation, the first long brush member and the second long brush member interfere with each other to form an interference region, the interference region moving dynamically along a predetermined direction, and the air duct inlet of the air duct being provided downstream in the predetermined direction.

[0225] When the automatic cleaning device performs cleaning, the first long brush member of the first roller brush and the second long brush member of the second roller brush of the cleaning module interfere with each other to form an interference area, sealing at least a portion of the intake passage between the two roller brushes, reducing the opening size of the intake passage, increasing the dust collection pressure, and achieving a better dust collection effect. The interference area moves dynamically along a predetermined direction, and the area with the maximum suction force in the intake passage between the two roller brushes also moves dynamically along a predetermined direction, making it highly likely that dust at all positions on the operating surface being cleaned by the roller brushes will be sequentially sucked into the air duct and, consequently, the dust box, by greater suction force. The air duct inlet of the air duct is located downstream in the predetermined direction, allowing dust to be easily sucked into the dust box via the air duct.

[0226] The following describes in detail the selectable embodiments of this disclosure, in conjunction with the attached drawings.

[0227] Figure 27 is a schematic diagram of the structure of a cleaning module from a different perspective provided by some embodiments of the present disclosure, Figure 28 is a schematic diagram of the cross-sectional structure of a cleaning module provided by some embodiments of the present disclosure, and Figure 29 is a schematic diagram of the structure of a first roller brush and a second roller brush provided by some embodiments of the present disclosure. Some embodiments of the present disclosure provide an automatic cleaning device, which includes a mobile platform 1000 and a cleaning module 5000. The mobile platform 1000 is configured to move automatically on an operating surface, and the cleaning module 5000 is assembled on the mobile platform 1000 and configured to clean the operating surface.

[0228] As shown in Figures 27 to 29, the cleaning module 5000 includes a first roller brush 100, a second roller brush 200, and an air duct 5400. The first roller brush 100 and the second roller brush 200 constitute the roller brush 5300.

[0229] The first roller brush 100 is, for example, a front brush and is provided along a first direction perpendicular to the axis of the moving platform, where the axis of the moving platform is, for example, the front-to-back axis X, and the first direction is, for example, the extension direction of the lateral axis Y. The first roller brush 100 includes a first long brush member 131, i.e., a first long blade, which is relatively long and thin. When cleaning flat, hard surfaces such as tiles and hardwood floors, the long blade contacts the floor surface, striking and picking up debris to be cleaned, such as dust and hair, and sucking it into the dust box. The contact force between the long blade and the floor surface is small, resulting in low noise during daily cleaning.

[0230] The second roller brush 200 is, for example, a rear brush, and is provided alongside the first roller brush 100, and is provided along a first direction perpendicular to the axis of the moving platform, and the second roller brush 200 includes a second long brush member 231, i.e., a second long blade.

[0231] The air duct 5400 is provided on the side of the first roller brush 100 and the second roller brush 200 away from the operating surfaces and is configured to guide dust collection, for example, to guide dust into a dust box.

[0232] When the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 roll opposite each other to perform the cleaning operation. Specifically, the first roller brush 100 rotates along a first rotational direction R1, which is, for example, counterclockwise, and the second roller brush 200 rotates along a second rotational direction R2, which is, for example, clockwise. The first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 come into contact with the floor surface, allowing them to strike and pick up debris to be cleaned, such as dust and hair.

[0233] When the automatic cleaning device performs cleaning, the first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 interfere with each other to form an interference region. For example, at least a portion of the outer perimeter formed by the trajectory of the outer end of the first brush member and the outer perimeter formed by the trajectory of the outer end of the second brush member interfere with each other. In some embodiments, when the first and second roller brushes rotate, the first and second brush members either do not come into contact or they intersect and come into contact with each other. Specifically, as shown in Figures 28 and 29, the first long brush member 131 and the second long brush member 231 interfere with each other in relation to the first roller brush 100 and the second roller brush 200, forming an interference region. At least a portion of the intake passage between the two roller brushes is sealed, reducing the opening size of the intake passage, increasing the dust collection pressure, and achieving a better dust collection effect.

[0234] The first brush member and the second brush member rotate in conjunction with the first roller brush and the second roller brush to a position where they are close to each other, and the point of proximity between the first brush member and the second brush member moves dynamically in a predetermined direction as both roller brushes rotate, and the interference region moves dynamically along the predetermined direction, for example, along the extension direction of the first roller brush 100 and the second roller brush 200, making it highly likely that dust at all positions on the operating surface cleaned by the roller brushes will be sequentially sucked into the air duct and, consequently, the dust box with greater suction force. The air duct inlet 5410 of the air duct 5400 is located downstream in the predetermined direction, allowing dust to be easily sucked into the dust box via the air duct.

[0235] In some embodiments, as shown in Figures 27 to 29, the first roller brush 100 includes a first shaft 110 and a first brush member 130. The first shaft 110 may be a rod-shaped structure, for example, an elongated cylindrical structure. Both ends of the rod-shaped structure are detachably attached to the bottom of the device body of the automatic cleaning device, either directly or via connecting members. In some embodiments, the first shaft 110, together with the first brush member 130 provided on the first shaft 110, is detachably attached to an elongated groove structure at the bottom of the device body, and the elongated groove structure extends along the lateral axis Y direction.

[0236] The axis of the first shaft rod 110 is considered to be the axis of rotation of the first roller brush 100, and after the first roller brush 100 is attached to the device body of the automatic cleaning device, the drive system on the device body can be driven to rotate the first shaft rod 110, either clockwise or counterclockwise. When the first shaft rod 110 rotates, other assemblies on the first shaft rod 10, such as the first brush member 130, can be rotated together to achieve the cleaning purpose.

[0237] The first brush member 130 is detachably attached to the first shaft rod 110 to facilitate replacement of the first brush member 130 as a consumable part. The first brush member 130 includes a first cylindrical member 133 and a first long brush member 131.

[0238] The first cylindrical member 133 is fitted onto the first shaft 110 so that the first cylindrical member 130 and the first shaft 110 are coaxial. The first cylindrical member 130 may be an elongated cylindrical structure, and its length is substantially the same as the length of the first shaft 110. The first cylindrical member 130 is fitted tightly onto the first shaft 110, and its inner diameter is substantially equal to or slightly smaller than the diameter of the first shaft 110, so that the first shaft 110 and the first cylindrical member 130 do not move relative to each other during rotation. The first cylindrical member 130 may be, for example, a flexible member.

[0239] The first long brush member 131, or first long blade, extends from the outer surface of the first cylindrical member 130 in a direction away from the first cylindrical member. In some embodiments, the first long brush member 131 and the first cylindrical member 130 are integrally constructed, for example, molded integrally from the same material.

[0240] The second roller brush 200 includes a second shaft rod 210 and a second brush member 230. The second shaft rod 210 may be a rod-shaped structure, for example, an elongated cylindrical structure. Both ends of the rod-shaped structure may be detachably attached to the bottom of the device body of the automatic cleaning device, either directly or via connecting members. In some embodiments, the second shaft rod 210, together with the second brush member 230 provided on the second shaft rod 210, is detachably attached to an elongated groove structure at the bottom of the device body, the elongated groove structure extending along the lateral axis Y direction.

[0241] The axis of the second shaft rod 210 is considered to be the axis of rotation of the second roller brush 200. After the second roller brush 200 is mounted on the main body of the automatic cleaning device, the drive system on the main body drives the second shaft rod 210 to rotate, either clockwise or counterclockwise. As the second shaft rod 210 rotates, other assemblies attached to the second shaft rod 210, such as the second brush member 230, rotate together to achieve the cleaning objective.

[0242] The second brush member 230 is detachably attached to the second shaft rod 210, making it convenient to replace the second brush member 230 as a consumable part. The second brush member 230 includes a second cylindrical member 233 and a second long brush member 231.

[0243] The second cylindrical member 233 is fitted onto the second shaft 210, and the second cylindrical member 233 and the second shaft 210 are configured to be coaxial. The second cylindrical member 230 may have an elongated cylindrical structure, and its length is substantially the same as the length of the second shaft 210. The second cylindrical member 230 is fitted tightly onto the second shaft 210, and its inner diameter is substantially equal to or slightly smaller than the diameter of the second shaft 210, so that the second shaft 210 and the second cylindrical member 230 do not move relative to each other during rotation. The second cylindrical member 230 may be, for example, a flexible member.

[0244] The second long brush member 231, or second long blade, extends from the outer surface of the second cylindrical member 230 in a direction away from the second cylindrical member. In some embodiments, the second long brush member 231 and the second cylindrical member 230 are integrally constructed, for example, molded integrally from the same material.

[0245] In some embodiments, as shown in Figures 27 to 29, the number of both the first long brush members 131 and the second long brush members 231 is multiple, with multiple first long brush members 131 corresponding one-to-one with multiple second long brush members 231, and any one of the multiple first long brush members 131 interfering with its corresponding second long brush member 231. Specifically, as shown in Figures 28 and 29, the first roller brush 100 includes five first long brush members 131, and the second roller brush 200 includes five second long brush members 231. Each first long brush member 131 and its corresponding second long brush member 231 rotate together with the first roller brush 100 and the second roller brush 200 to a position where they are close to each other, and when they are positioned, for example, between the first roller brush 100 and the second roller brush 200, they interfere with each other. The first long brush member 131 and its corresponding second long brush member 231 begin to interfere with each other, for example, from one end, and rotate further together with the first roller brush 100 and the second roller brush 200, causing the interference area between them to move from one end to the other. As the first roller brush 100 and the second roller brush 200 rotate further, they disengage from each other, and this process repeats.

[0246] In some embodiments, referring to Figures 27 to 29, when the automatic cleaning device performs a cleaning operation, at any given time, at least one pair of corresponding first long brush members 131 and second long brush members 231 interfere with each other. Specifically, Figure 29 shows the case where two pairs of first long brush members 131 and second long brush members 231 interfere with each other simultaneously. D1 indicates that one pair of first long brush members 131 and second long brush members 231 are interfering at one end, and D2 indicates that the other pair of first long brush members 131 and second long brush members 231 are interfering at the other end. In this way, the area of ​​the interference region can be appropriately increased, the opening size of the intake passage can be further reduced, the dust collection pressure can be increased, and a better dust collection effect can be achieved.

[0247] In some embodiments, as shown in Figures 27 to 29, the plurality of first long brush members 131 are uniformly distributed in the circumferential direction of the first cylindrical member 133. The plurality of second long brush members 231 are uniformly distributed in the circumferential direction of the second cylindrical member 233. For example, there are five first long brush members 131, with one first long brush member 131 provided every 72 degrees in the circumferential direction of the first cylindrical member 133. For example, there are five second long brush members 231, with one second long brush member 131 provided every 72 degrees in the circumferential direction of the second cylindrical member 233.

[0248] In some embodiments, the first long brush members 131 extend from one end to the other of the first cylindrical member 133 and are arranged to move along the outer circumferential surface of the first cylindrical member 133 rather than extending along the axis of the first cylindrical member 133, for example, in a helical manner. Each first long brush member 131 covers a first predetermined angle on the circumferential direction of the first cylindrical member 133, the first predetermined angle being 360° / N or greater, where N is the number of first long brush members, and N is a positive integer N≧2. The second long brush members 231 extend from one end to the other of the second cylindrical member 233 and are arranged to move along the outer circumferential surface of the second cylindrical member 233 rather than extending along the axis of the second cylindrical member 233, for example, in a helical manner. Each second long brush member 231 covers a second predetermined angle in the circumferential direction of the second cylindrical member 233, and this second predetermined angle is 360° / N or greater, where N is the number of second long brush members, and N is a positive integer such that N≧2.

[0249] In this way, at least two adjacent pairs of first long brush members 131 and second long brush members 231 can be simultaneously brought into interference. At least a portion of the intake passage between the two roller brushes is sealed, reducing the opening size of the intake passage, increasing the dust collection pressure, and achieving a better dust collection effect.

[0250] In some embodiments, as shown in Figures 27 to 29, when the automatic cleaning device performs cleaning work, the first roller brush 100 and the second roller brush 200 rotate opposite each other, with the first roller brush 100 rotating along a first rotational direction R1, which is, for example, counterclockwise, and the second roller brush 200 rotating along a second rotational direction R2, which is opposite to the first rotational direction, with the second rotational direction being, for example, clockwise. In this way, the first roller brush 100 and the second roller brush 200 push dust and other debris struck by the first long brush member 131 and the second long brush member 231 between the first roller brush 100 and the second roller brush 200, allowing it to easily enter the dust box via the air duct 5400.

[0251] In some embodiments, as shown in Figures 27 to 29, the first long brush member 131 extends spirally from one end of the first cylindrical member 133 to the other end of the first cylindrical member 133 along a second rotational direction R2 on the outer surface of the first cylindrical member 133, where the second rotational direction R2 is, for example, clockwise. The second long brush member 231 extends spirally from one end of the second cylindrical member 233 to the other end of the second cylindrical member 233 along a first rotational direction, where the first rotational direction R1 is, for example, counterclockwise.

[0252] In this way, for any pair of first long brush members 131 and second long brush members 231, the interference region between the first long brush member 131 and its corresponding second long brush member 231 is configured to dynamically move from one end of the combination body composed of the first roller brush 100 and the second roller brush 200 to the other end of the combination body, for example, along the lateral axis Y in Figure 28.

[0253] Specifically, an arbitrary first long brush member 131 and its corresponding second long brush member 231 rotate together with the first roller brush 100 and the second roller brush 200, respectively, until they are in close proximity to each other. For example, when they are positioned between the first roller brush 100 and the second roller brush 200, they interfere with each other. The first long brush member 131 and its corresponding second long brush member 231 begin to interfere with each other from one end of the combination formed by the first roller brush 100 and the second roller brush 200, as shown by D1 in Figure 29. The first roller brush 100 rotates further together with the second roller brush 200, and the interference region between them gradually moves from the lateral axis Y in Figure 29 to the other end of the combination formed by the first roller brush 100 and the second roller brush 200, as shown by D2 in Figure 29. As the first roller brush 100 and the second roller brush 200 rotate further, they move out of interference, and this process repeats.

[0254] In some embodiments, as shown in Figures 27 to 29, the first long brush member 131 tumbles in a second rotational direction R2 in the circumferential direction of the first cylindrical member 133, and the second long brush member 231 tumbles in a first rotational direction R1 in the circumferential direction of the second cylindrical member 233.

[0255] Figure 30 is a schematic diagram of the structure of a first roller brush and a second roller brush provided in some embodiments of this disclosure. As shown in Figure 30, in some embodiments, the blade structure of the first roller brush and the second roller brush differs from the embodiment blade structure shown in Figures 28-29.

[0256] The first long brush member 131 extends spirally from one end of the first cylindrical member 133 to the center of the first cylindrical member 133 along the second rotational direction R2, and then extends spirally to the other end of the first cylindrical member 133 along the first rotational direction R1. The first long brush member 131 is distributed, for example, in a V-shape on the outer circumferential surface of the first cylindrical member 133, and the straight line connecting both ends of the first long brush member 131 is, for example, parallel to the axis of the first cylindrical member 133. In some embodiments, the number of first long brush members 131 is, for example, four, and they are uniformly distributed on the circumferential direction of the first cylindrical member 133.

[0257] Similarly, the second long brush member 231 extends spirally from one end of the second cylindrical member 233 to the center of the second cylindrical member 233 along the first rotational direction R1, and then spirally to the other end of the second cylindrical member 233 along the second rotational direction R2. The second long brush member 231 is distributed, for example, in a V-shape on the outer circumferential surface of the second cylindrical member 233, and the line connecting both ends of the second long brush member 231 is, for example, parallel to the axis of the second cylindrical member 233. In some embodiments, the number of second long brush members 231 is, for example, four, and they are uniformly distributed on the circumferential direction of the second cylindrical member 233.

[0258] As shown in Figure 30, when the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 rotate along the first rotation direction R1 and the second rotation direction R2, respectively, and any one of the multiple first long brush members 131 interferes with the corresponding second long brush member 231, reducing the opening size of the intake passage, increasing the dust collection pressure, and achieving a better dust collection effect.

[0259] For any pair of first long brush members 131 and second long brush members 231, the interference region between the first long brush member 131 and its corresponding second long brush member 231 moves dynamically from both ends of the combination body composed of the first roller brush 131 and the second roller brush 231 toward the center of the combination body.

[0260] Specifically, any first long brush member 131 and its corresponding second long brush member 231 rotate together with the first roller brush 100 and the second roller brush 200, respectively, to a position where they are close to each other, and when they are positioned between the first roller brush 100 and the second roller brush 200, for example, they interfere with each other. The first long brush member 131 and its corresponding second long brush member 231 begin to interfere with each other from, for example, both ends of the combination formed by the first roller brush 100 and the second roller brush 200, as shown by D3 and D4 in Figure 30. The first roller brush 100 rotates further together with the second roller brush 200, and the region of interference between them is configured to gradually move along the transverse axis Y in Figure 30 to the center of the combination formed by the first roller brush 100 and the second roller brush 200, as shown by D5 in Figure 29. As the first roller brush 100 and the second roller brush 200 rotate further, they move out of interference, and so on. In such cases, the air duct inlet 5410 of the air duct 5400 is located in the center of a combination consisting of the corresponding first roller brush 100 and second roller brush 200, allowing dust to be easily drawn into the dust box via the air duct.

[0261] In other embodiments, the interference region of the first long brush member 131 and its corresponding second long brush member 231 is configured to move dynamically from the center of the combination of the first roller brush 100 and the second roller brush 200 toward both ends of the combination. In such cases, the air duct inlets 5410 of the air duct 5400 are located at both ends of the combination of the corresponding first roller brush 100 and the second roller brush 200, allowing dust to be easily drawn into a dust box via the air duct.

[0262] In some embodiments, as shown in Figures 27 to 29, the first roller brush 100 includes a first short brush member 132, i.e., a first short blade, and the first short brush member 132 does not interfere with the second roller brush 200. The second roller brush 200 includes a second short brush member 232, and the second short brush member 232 does not interfere with the first roller brush 100.

[0263] Short blades are relatively short and thick, and can provide strong cleaning power when dealing with slightly larger debris, such as fruit shells and particulate matter. When cleaning flat, hard surfaces such as tiles and hardwood floors, short blades do not come into contact with the floor surface. When cleaning carpets of a certain thickness, both long and short blades come into contact with the carpet surface, and in this case, the relatively thick and short blade plays an important role in beating and loosening dust and hair hidden in the carpet, improving the cleaning effect.

[0264] In some embodiments, the first brush member 130 includes the first short brush member 132, and the first long brush member 131, the first short brush member 132, and the first cylindrical member 133 are integrally formed from the same material. The second brush member 230 includes the second short brush member 232, and the second long brush member 231, the second short brush member 232, and the second cylindrical member 233 are integrally formed from the same material.

[0265] In some embodiments, as shown in Figures 27 to 29, the first long brush member 131 and the first short brush member 132 are provided at uniform intervals in the circumferential direction of the first roller brush 100, for example, the first long brush member 131 and the first short brush member 132 are provided at uniformly alternating intervals in the circumferential direction of the first cylindrical member 133. The second long brush member 231 and the second short brush member 232 are provided at uniform intervals in the circumferential direction of the second roller brush 200, for example, the second long brush member 231 and the second short brush member 232 are provided at uniform and alternating intervals in the circumferential direction of the second cylindrical member 233.

[0266] In some embodiments, one of the first roller brush 100 and the second roller brush 200 is a hard-core roller brush, and the other is a soft-core roller brush. The soft roller brush has a large deformation amount, and has good passability for large particle dust. The deformation amount of the hard-core roller brush is small, and the cleaning ability is high.

[0267] In some embodiments, the first long brush member 131 and the first short brush member 132 constitute the first brush member, and the second long brush member 231 and the second short brush member 232 constitute the second brush member.

[0268] In some embodiments, at least one of the first roller brush 100 and the second roller brush 200 may include a short brush member and a long brush member. When neither the first roller brush 100 nor the second roller brush 200 includes a short brush member, the first long brush member 131 of the first roller brush 100 functions as the first brush member, and the second long brush member 231 of the second roller brush 200 functions as the second brush member. The first brush member and the second brush member interfere with each other to form an interference region.

[0269] In the related art, there is a double roller brush model in an automatic cleaning device, such as a sweeping robot, etc. For this double roller brush model, the front and rear two roller brushes enhance the cleaning ability of the automatic cleaning device, but the blades of the front and rear two roller brushes only perform the function of cleaning the cleaning surface, and cannot clean the cleaning roller brush cavity. The two roller brushes do not interfere with each other, and there is always a gap with a predetermined size between the two roller brushes, and the dust suction effect is low.

[0270] The automatic cleaning device provided by the present disclosure includes a moving platform configured to automatically move on an operation surface, and a cleaning module assembled on the moving platform and configured to clean the operation surface. The cleaning module includes a first roller brush and a second roller brush. The first roller brush is provided along a first direction perpendicular to the front-rear axis of the moving platform. The first roller brush includes a first brush member. The second roller brush is provided side by side with the first roller brush. The second roller brush includes a second brush member and a roller brush cavity configured to accommodate the first roller brush and the second roller brush. Here, when the first roller brush and the second roller brush rotate along their respective first operating directions, the first brush member and the second brush member do not interfere with each other. When the first roller brush and the second roller brush rotate along their respective second operating directions, the interference amount between the first brush member and the second brush member increases.

[0271] The present disclosure further provides an automatic cleaning device, which includes a moving platform configured to automatically move on an operation surface, and a cleaning module assembled on the moving platform and configured to clean the operation surface. The cleaning module includes a first roller brush and a second roller brush. The first roller brush is provided along a first direction perpendicular to the front-rear axis of the moving platform. The first roller brush includes a first brush member. The second roller brush is provided side by side with the first roller brush. The second roller brush includes a second brush member and a roller brush cavity configured to accommodate the first roller brush and the second roller brush. Here, when the first roller brush and the second roller brush rotate along their respective first operating directions, the first brush member and the second brush member do not interfere with the inner wall of the roller brush cavity. When the first roller brush and the second roller brush rotate along their respective second operating directions, at least one of the first brush member and the second brush member interferes with the inner wall of the roller brush cavity.

[0272] This disclosure provides two roller brushes that rotate in opposite directions. When the automatic cleaning device performs cleaning, the first long brush member and the second long brush member interfere with each other, and the first long brush member and the second long brush member do not interfere with the inner wall of the roller brush cavity. When the automatic cleaning device performs dust collection, the amount of interference between the first long brush member and the second long brush member increases, and the first long brush member and the second long brush member interfere with the inner wall of the roller brush cavity. Different functions are achieved by forward and reverse rotation. During the dust collection process, noise is reduced and more dust can be collected. When rotating in reverse, the inner wall of the roller brush cavity can be scraped and cleaned, which is convenient for cleaning the inner wall of the roller brush cavity.

[0273] The following explanation will be given with reference to Figures 27 to 31, and the same structure can be described in the above embodiment, so it will not be repeated here. The cleaning module 5000 includes a first roller brush 100, a second roller brush 200, and an air duct 5400. The first roller brush 100 and the second roller brush 200 constitute the roller brush 5300. The first roller brush 100 includes a first brush member, which includes a first long brush member 131 and a first short brush member 132. The second roller brush 200 includes a second brush member, which includes a second long brush member 231 and a second short brush member 232.

[0274] The first roller brush 100, for example, the front brush, is provided along a first direction perpendicular to the axis of the moving platform, where the axis of the moving platform is, for example, the front-to-back axis X, and the first direction is, for example, the extension direction of the lateral axis Y. The first roller brush 100 includes a first long brush member 131, i.e., a first long blade, which is relatively long and thin. When cleaning flat, hard surfaces such as tiles and hardwood floors, the long blade contacts the floor surface, striking and picking up debris to be cleaned, such as dust and hair, and ultimately sucking it into the dust box. The contact force between the long blade and the floor surface is small, resulting in low noise during routine cleaning.

[0275] A second roller brush 200, for example, a rear brush, is provided alongside the first roller brush 100 and is oriented along a first direction perpendicular to the axis of the moving platform, and the second roller brush 200 includes a second long brush member 231, i.e., a second long blade.

[0276] The air duct 5400 is provided on the side of the first roller brush 100 and the second roller brush 200 away from the operating surfaces and is configured to collect dust, for example, to guide the dust into a dust box.

[0277] The roller brush cavity 5210 bulges upward along the top of the roller brush frame 5200, forming a cavity that houses the first roller brush 100 and the second roller brush 200. The roller brush cavity 5210 is a housing chamber with an opening at the bottom, which faces the floor. Through this opening, the roller brush cavity 5210 sucks up dirt and dust from the floor, performing a floor cleaning function. The top of the roller brush cavity 5210 communicates with the air duct 5400 via an air duct port.

[0278] Here, when the automatic cleaning device performs cleaning work, the first long brush member 131 and the second long brush member 231 interfere with each other, and the first long brush member 131 and the second long brush member 231 do not interfere with the inner wall of the roller brush cavity 5210. When the automatic cleaning device performs dust collection work, the amount of interference between the first long brush member 131 and the second long brush member 231 increases, and the first long brush member 131 and the second long brush member 231 interfere with the inner wall of the roller brush cavity 5210.

[0279] During actual use, the two roller brushes, which rotate in opposite directions, suck dust into the roller brush cavity 5210. The two roller brushes come into contact via long blades, and these long blades, which bring the two roller brushes into contact with each other during use, form a single independent volume to suck in dust. This design results in low noise, prevents dust and debris from being thrown out, and other scraps and debris are also sucked into the space within the two roller brushes, significantly improving dust collection efficiency.

[0280] As shown in Figure 28, the cleaning device of this embodiment has two arc-shaped hollow arc surfaces formed at the top of each roller brush cavity 5210. Each hollow arc surface is close to one roller brush and does not come into contact with the roller brush. When the automatic cleaning device performs cleaning, each roller brush rotates in opposite directions along the inclination direction of the long blade. The first long brush member 131 and the second long brush member 231 interfere with each other, but the amount of interference is relatively small, so the rotation is smooth and unhindered, and dirt is easily drawn in. When the automatic cleaning device performs dust collection, each roller brush rotates along the inclination direction of the long blade. Due to the flexibility and centrifugal force of the long blade, the inclination angle is reduced, for example, the long blade is substantially perpendicular to the cylindrical member. At this time, the long blade is rubbed against or struck against the hollow arc surface of the roller brush cavity 5210, sweeping off dust from the blade and the hollow arc surface, and enabling self-cleaning of the roller brush cavity 5210 and the long blade.

[0281] As shown in Figure 28, during normal cleaning, the front and rear brushes are wound inward toward the center, with the corresponding front brush rotating counterclockwise and the rear brush rotating clockwise. The front brush is set to tilt clockwise and the rear brush to tilt counterclockwise, so that during cleaning, the direction of the contact force on the roller brush is exactly the direction of blade deformation, and at this time the impact sound is softest when it contacts the floor surface, which is advantageous for noise reduction. As can be seen from the direction of blade tilting, when the front brush rotates forward, the blade deforms backward due to the contact force, and the diameter of the main brush deforms in a direction that decreases (the rear brush blade deforms counterclockwise), and at this time it does not rub against the inner wall of the roller brush cavity 5210. When the main brush rotates backward, the blade deforms due to the contact force, and the diameter deforms in a direction that increases (the rear brush blade deforms clockwise), and at this time the inner wall is rubbed and self-cleaning occurs (the blade rotates at high speed, and the diameter increases due to centrifugal force).

[0282] In some embodiments, the first long brush member 131 includes a base portion close to the first cylindrical member 133 and a top portion spaced apart from the first cylindrical member 133, with the thickness of the base portion of the first long brush member being less than the thickness of the top portion of the first long brush member, and / or the second long brush member 231 includes a base portion close to the second cylindrical member 233 and a top portion spaced apart from the second cylindrical member, with the thickness of the base portion of the second long brush member being less than the thickness of the top portion of the second long brush member. This ensures that the first long brush member 131 and / or the second long brush member 231 tilt to one side in the forward rotation state and swing to the other side in the reverse rotation state to increase the striking effect with the inner wall of the roller brush cavity 5210.

[0283] In some embodiments, the first long brush member 131 has a first width from its base to its top, which is greater than the distance between the first roller brush 100 and the inner wall of the roller brush cavity 5210, and / or the second long brush member 231 has a second width from its base to its top, which is greater than the distance between the second roller brush 200 and the inner wall of the roller brush cavity 5210. This ensures that, when the roller brush rotates in reverse to collect dust, the first long brush member 131 and the second long brush member 231 are long enough to contact and strike the inner wall of the roller brush cavity 5210.

[0284] When the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 roll opposite each other to perform the cleaning operation. Specifically, the first roller brush 100 rotates along a first rotational direction R1, which is, for example, counterclockwise, and the second roller brush 200 rotates along a second rotational direction R2, which is, for example, clockwise. The first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 come into contact with the floor surface, allowing them to strike and pick up debris to be cleaned, such as dust and hair.

[0285] When the automatic cleaning device performs cleaning, the first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 interfere with each other to form an interference region. Specifically, as shown in Figures 28 and 29, the first long brush member 131 and the second long brush member 231 interfere with each other in relation to the first roller brush 100 and the second roller brush 200, forming an interference region. At least a portion of the intake passage between the two roller brushes is sealed, reducing the opening size of the intake passage, increasing the dust collection pressure, and achieving a better dust collection effect.

[0286] The interference region moves dynamically along a predetermined direction, for example, along the extending direction of the first roller brush 100 and the second roller brush 200, making it highly likely that dust at all positions on the operating surface being cleaned by the roller brushes will be sequentially sucked into the air duct and, consequently, the dust box with greater suction force. The air duct inlet 5410 of the air duct 5400 is located downstream in the predetermined direction, allowing dust to be easily sucked into the dust box via the air duct.

[0287] In some embodiments, the first roller brush 100 includes a first shaft 110 and a first brush member 130. The first shaft 110 may be a rod-shaped structure, for example, an elongated cylindrical structure. Both ends of the rod-shaped structure may be detachably attached to the bottom of the device body of the automatic cleaning device, either directly or via connecting members. In some embodiments, the first shaft 110, together with the first brush member 130 provided on the first shaft 110, is detachably attached to an elongated groove structure at the bottom of the device body, the elongated groove structure extending along the lateral axis Y direction.

[0288] The axis of the first shaft rod 110 is regarded as the rotation axis of the first roller brush 100. After the first roller brush 100 is attached to the device body of the automatic cleaning device, the drive system on the device body drives the first shaft rod 110 to rotate, and the rotation direction is clockwise or counterclockwise. When the first shaft rod 110 rotates, other assemblies provided on the first shaft rod 10, such as the first brush member 130, are rotated together to achieve the cleaning purpose.

[0289] The first brush member 130 is removably attached to the first shaft rod 110, which is convenient for replacing the first brush member 130 as a consumable. The first brush member 130 includes a first cylindrical member 133 and a first long brush member 131.

[0290] The first cylindrical member 133 is configured to be fitted into the first shaft rod 110 so that the first cylindrical member 130 and the first shaft rod 110 are coaxial. The first cylindrical member 130 may have an elongated cylindrical structure, and the length of the first cylindrical member 130 is substantially the same as the length of the first shaft rod 110. The first cylindrical member 130 is closely fitted into the first shaft rod 110, and the inner diameter of the first cylindrical member 130 is substantially equal to or slightly smaller than the diameter of the first shaft rod 110. During the rotation process, the first shaft rod 110 and the first cylindrical member 130 do not move relative to each other. The first cylindrical member 130 may be, for example, a flexible member.

[0291] The first long brush member 131, that is, the first long blade, extends in a direction away from the first cylindrical member from the outer surface of the first cylindrical member 130. In some embodiments, the first long brush member 131 and the first cylindrical member 130 are of an integral structure, for example, integrally formed from the same material.

[0292] The second roller brush 200 includes a second shaft rod 210 and a second brush member 230. The second shaft rod 210 may be a rod-shaped structure, for example, an elongated cylindrical structure. Both ends of the rod-shaped structure may be detachably attached to the bottom of the device body of the automatic cleaning device, either directly or via connecting members. In some embodiments, the second shaft rod 210, together with the second brush member 230 provided on the second shaft rod 210, is detachably attached to an elongated groove structure at the bottom of the device body, the elongated groove structure extending along the lateral axis Y direction.

[0293] The axis of the second shaft rod 210 is considered to be the axis of rotation of the second roller brush 200. After the second roller brush 200 is mounted on the main body of the automatic cleaning device, the drive system on the main body drives the second shaft rod 210 to rotate, either clockwise or counterclockwise. As the second shaft rod 210 rotates, other assemblies attached to the second shaft rod 210, such as the second brush member 230, rotate together to achieve the cleaning objective.

[0294] The second brush member 230 is detachably attached to the second shaft rod 210, making it convenient to replace the second brush member 230 as a consumable part. The second brush member 230 includes a second cylindrical member 233 and a second long brush member 231.

[0295] The second cylindrical member 233 is fitted onto the second shaft 210, and is configured such that the second cylindrical member 233 and the second shaft 210 are coaxial. The second cylindrical member 230 may be an elongated cylindrical structure, and its length is substantially the same as the length of the second shaft 210. The second cylindrical member 230 is fitted tightly onto the second shaft 210, and its inner diameter is substantially equal to or slightly smaller than the diameter of the second shaft 210, so that the second shaft 210 and the second cylindrical member 230 do not move relative to each other during rotation. The second cylindrical member 230 may be, for example, a flexible member.

[0296] The second long brush member 231, or second long blade, extends from the outer surface of the second cylindrical member 230 in a direction away from the second cylindrical member. In some embodiments, the second long brush member 231 and the second cylindrical member 230 are integrally constructed, for example, molded integrally from the same material.

[0297] In some embodiments, the number of both the first long brush members 131 and the second long brush members 231 is multiple, and the multiple first long brush members 131 correspond one-to-one with the multiple second long brush members 231, and any one of the multiple first long brush members 131 is configured to interfere with its corresponding second long brush member 231. Specifically, as shown in Figures 28 to 30, the first roller brush 100 includes five first long brush members 131, and the second roller brush 200 includes five second long brush members 231. Each first long brush member 131 and its corresponding second long brush member 231 rotate together with the first roller brush 100 and the second roller brush 200 to a position where they are close to each other, and when they are positioned, for example, between the first roller brush 100 and the second roller brush 200, they interfere with each other. The first long brush member 131 and its corresponding second long brush member 231 begin to interfere with each other, for example, from one end, and rotate further together with the first roller brush 100 and the second roller brush 200, causing the interference area between them to move from one end to the other. As the first roller brush 100 and the second roller brush 200 rotate further, they disengage from each other, and this process repeats.

[0298] In some embodiments, as shown in Figure 31, a mounting portion 1400 for attaching the first roller brush 100 is provided at at least one end of the first roller brush 100, the mounting portion 1400 is assembled at the first end 52111 of the front cleaning brush mounting position 5211, the mounting portion 1400 has a plurality of mounting teeth 141, the angle between two adjacent tooth grooves may be the same as, or an integer multiple of, the angle between two adjacent long blades 131 of the first roller brush 100, similarly the second roller brush has a similarly provided mounting portion, and regardless of how the first and second roller brushes are assembled, the long blades 131 of the first roller brush 100 can interfere with the long blades 231 of the second roller brush 200.

[0299] In related technologies, during the process of an automatic cleaning device cleaning a work surface, its roller brush rotates, sweeping up dust and debris on one side and directing it into a dust box via an air duct, while simultaneously picking up tangled material on the work surface and gradually accumulating it on both ends of the roller brush. If the amount of tangled material accumulated on both ends of the roller brush increases, manual cleaning becomes necessary; otherwise, it can easily affect the cleaning effectiveness of the automatic cleaning device.

[0300] This disclosure provides an automatic cleaning device comprising a mobile platform configured to automatically move over an operating surface, and a cleaning module assembled on the mobile platform and configured to clean the operating surface, the cleaning module comprising a first roller brush and a second roller brush, wherein the first roller brush is provided along a first direction perpendicular to the longitudinal axis of the mobile platform, and the second roller brush is provided alongside the first roller brush, wherein at least one end of the first roller brush has a first containment chamber configured to contain tangled material wound up by the first roller brush, the first containment chamber comprising a flexible outer assembly and a first rigid inner assembly, and at least one end of the second roller brush has a second containment chamber configured to contain tangled material wound up by the second roller brush, the second containment chamber comprising a rigid outer assembly and a second rigid inner assembly.

[0301] This disclosure provides a containment chamber at the end of the roller brush, which allows entangled debris to be contained within the chamber, eliminating the need for frequent cleaning of the debris on the roller brush and reducing the burden on the user. The rigid cavity wall ensures the strength and cleaning power of the brush member at the end of the corresponding roller brush, while guaranteeing a sufficient containment space that does not easily deform and decrease. The flexible cavity wall ensures the ability of large particle debris to pass between the two cavities, effectively preventing clogging.

[0302] The following describes in detail the selectable embodiments of this disclosure, along with the attached drawings. The same structures can be described in the above embodiments and will not be repeated here.

[0303] As shown in Figure 32, the cleaning module 5000 includes a first roller brush 100 and a second roller brush 200. The first roller brush 100 and the second roller brush 200 constitute the roller brush 5300, and when the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 rotate opposite each other. One of the first roller brush 100 and the second roller brush 200 rotates clockwise, and the other rotates counterclockwise.

[0304] The first roller brush 100, for example, the front roller brush, is provided along a first direction perpendicular to the longitudinal axis X of the moving platform, and the first direction is parallel to the transverse axis Y of the moving platform. The second roller brush 200 is provided alongside the first roller brush 100, and the second roller brush 200, for example, the rear roller brush, is provided along a first direction perpendicular to the longitudinal axis X of the moving platform.

[0305] In some embodiments, the first roller brush 100, for example, a soft roller brush, has a non-brush portion that is compressible in a direction perpendicular to the axis of the first roller brush, allowing large debris to easily pass through the first roller brush for cleaning, while the second roller brush 200, for example, a hard roller brush, has a non-brush portion that is not compressible in a direction perpendicular to the axis of the second roller brush, making it difficult for debris to pass through the second roller brush and ensuring a cleaning effect.

[0306] As shown in Figure 32, at least one end of the first roller brush 100 has a first containment chamber 101 configured to contain entangled material wound up by the first roller brush 100, and the first containment chamber 101 consists of a flexible outer assembly and a first rigid inner assembly. At least one end of the second roller brush 200 has a second containment chamber 201 configured to contain entangled material wound up by the second roller brush 200, and the second containment chamber 201 consists of a rigid outer assembly and a second rigid inner assembly.

[0307] The second roller brush includes a housing chamber having a structure similar to that of the first roller brush, and in some embodiments, the second housing chamber of the second roller brush is configured to house the entanglement wound by the second roller brush, and the assembly defining the second housing chamber includes a second rigid outer assembly. The second rigid outer assembly includes a portion of the second shaft, for example, the second rigid outer assembly includes the inner wall of the end of the second shaft. In some embodiments, the assembly defining the second housing chamber further includes a second rigid inner assembly, and the second rigid inner assembly includes at least a portion of the end member.

[0308] Since both roller brushes are equipped with a storage chamber for accumulating tangled material, there is no need to frequently clean the tangled material on the roller brushes, thus reducing the burden on the user.

[0309] In some embodiments, as shown in Figures 33 to 35, the first roller brush 100 includes a first shaft rod 110 and a first end structure 120.

[0310] The first shaft rod 110 includes a shaft rod body 113 and a first end 111 located on at least one side of the shaft rod body 113, wherein the cross-sectional size of the shaft rod body 113 perpendicular to the axial direction is larger than the cross-sectional size of the first end 111 perpendicular to the axial direction.

[0311] The first end member 120 is configured to be attached to the first end 111, and the first rigid internal assembly includes a portion of the first end member 120. The first end member 120 is formed from a rigid material. In some embodiments, the first end member 120 is removably attached to the first end 111.

[0312] In some embodiments, the first end member 120 includes a guide sleeve 121 and is configured to accommodate the first end 111 and attach the first end member 120 to the first end 111, and the first rigid internal assembly includes at least a portion of the guide sleeve 121. Specifically, as shown in Figures 33 to 35, when the first end member 120 is attached to the first end 111, a portion of the first end member 120 surrounds at least a portion of the guide sleeve 121, and together they form the first housing chamber 101.

[0313] In some embodiments, as shown in Figures 33 to 35, the first end member 120 has an introduction portion 1211 which is provided on the inner circumferential wall of the guide sleeve 121, the first end portion 111 includes a first fitting portion 1111 which is fitted into the first fitting portion 1111 to form a guide fitting structure, and the first end member 120 is attached to the first end portion 111.

[0314] In some embodiments, the introduction portion 1211 is provided on the inner circumferential wall of the guide sleeve 121, and the introduction portion 1211 extends spirally along the circumferential direction of the guide sleeve 121 in the direction of the first shaft rod 110. Correspondingly, the first fitting portion 1111 is provided corresponding to the outer circumference of the first end portion 111, and the first fitting portion 1111 extends spirally along the circumferential direction of the first end portion 111 in the direction of the first end member 110. Thus, the guide fitting structure formed together with the introduction portion 1211 and the first fitting portion 1111 is a helical guide fitting structure. In some embodiments, one of the introduction portion 1211 and the first fitting portion 1111 is a projection and the other is a recess.

[0315] In some embodiments, as shown in Figures 33 to 35, the first roller brush 100 further includes a first brush member 130 fitted onto the first shaft 110, the first brush member 130 includes a first cylindrical member 131 and a first brush member 132, the first cylindrical member 131 fitted onto the first shaft 110, the first cylindrical member 131 and the first shaft 132 being coaxial, and the first brush member 132, for example, a blade, extending from the outer surface of the first cylindrical member 131 in a direction away from the first cylindrical member 131. The first cylindrical member 131 is formed from a flexible material, and the flexible outer assembly includes a portion of the first cylindrical member 131.

[0316] In some embodiments, both the first cylindrical member 131 and the first brush member 132 are made of a flexible material, such as a colloidal material, and are integrally molded.

[0317] As shown in Figures 33 to 35, the first roller brush 100 further includes a flexible filler 120 between the first shaft 110 and the first cylindrical member 131, the flexible filler 120 covering, for example, the outer circumference of the shaft body 113 and exposing at least a portion of the first end 111. The first cylindrical member 131 of the first brush member 130 covers the outer circumference of the flexible filler 120. The first roller brush 100 configured in this way is a soft roller brush.

[0318] In some embodiments, as shown in Figures 33 to 35, the end of the first cylindrical member 131 closest to the first cap member 120 has a first housing space 1311 that opens toward the first cap member 120, the first housing space 1311 housing a part of the first cap member 120 and the first end 111, and a part of the first housing space 1311 constitutes the first housing chamber 101.

[0319] Specifically, the first cylindrical member 131, the flexible filler 120, and the first shaft 110 are all provided coaxially. The axial length of the flexible filler 120 is less than the length of the first shaft 110. Specifically, the flexible filler 120 covers only the shaft body 113 of the first shaft 110, exposing the first ends 111 on both sides of the shaft body 113. The axial length of the first cylindrical member 131 is greater than or equal to the length of the first shaft 110. In this way, first housing spaces 1311 are formed at both ends of the first cylindrical member 131, opening toward the first cap member 120. When the first cap member 120 is attached to the first ends 111, a portion of the first housing space 1311 constitutes the first housing chamber 101.

[0320] In some embodiments, as shown in Figures 33 to 35, the end of the first cap member 120 away from the first shaft 110 has a first assembly structure 122, which is used to assemble the first roller brush 100 into the cleaning module, and the first assembly structure 122 is fitted and mounted to a mounting position on the cleaning module. The distance between the opening of the first housing space 1311 and the first assembly structure 122 is less than or equal to the distance between the first end 111 and the first assembly structure 122. That is, when the first cap member 120 is attached to the first end 111, the end face of the first cylindrical member 131 closest to the first assembly structure 122 is flush with the end face of the first end 111 closest to the first assembly structure 122, or is close to the first assembly structure 122.

[0321] In some embodiments, the first cap member 120 includes a drive-side cap member and a driven-side cap member. When the first cap member 120 is the drive-side cap member, for example the left-side first cap member shown in Figures 33 to 35, the first assembly structure 122 is a transmission structure connected to a drive unit in the cleaning module, which drives the drive unit to rotate the first roller brush 100.

[0322] When the first cap member 120 is a driven cap member, for example, the first cap member on the right in Figures 33 to 35, the first assembly structure 122 is a bearing structure that facilitates the rotation of the first roller brush 100.

[0323] In some embodiments, as shown in Figures 33 to 35, the first cap member 120 further includes a first blocking structure 123 provided between the assembly structure 122 and the guide sleeve 121 to prevent entangled material from excessively extending away from the first brush member. The circumferential size of the first blocking structure 123 is larger than the circumferential size of the assembly structure 122 and the guide sleeve 121.

[0324] In some embodiments, as shown in Figures 33 to 35, the first accommodation space 1311 accommodates a portion of the guide sleeve 121, and the first blocking structure 123 is spaced a predetermined distance from the opening of the first accommodation space 1311. In this way, entangled material can enter the first accommodation section 101 during the rotation process of the first roller brush 100.

[0325] Figure 36 is a schematic diagram of the exploded structure of a second roller brush provided by some embodiments of the present disclosure, Figure 37 is a schematic diagram of the exploded structure of a second roller brush provided by some embodiments of the present disclosure, and Figure 38 is a schematic diagram of the cross-sectional structure of a second roller brush provided by some embodiments of the present disclosure.

[0326] In some embodiments, as shown in Figures 36 to 38, the second roller brush 200 includes a second shaft rod 210 and a second end member 2200.

[0327] The second shaft rod 210 has at least one second end 212, and in some embodiments, both ends of the second shaft rod 210 have second end 212, and the second end 212 has a fitting member 213. The second end member 2200 is fitted and attached to the fitting member 213, and is configured so that the second end member 2200 is attached to the second end 212 of the second shaft rod 210.

[0328] The second end 212 has a second housing space 2112 that opens toward the second end member 2200, the fitting member 213 is housed in the second housing space 2112, the rigid outer assembly includes a portion of the second end 212, and the second housing chamber 201 includes a portion of the second housing space 2112. In some embodiments, the second end member 2200 includes a guide rod 222, at least a portion of which extends into the second housing space 2112, and the second end member 2200 is fitted and mounted to the fitting member 213, and the second rigid inner assembly includes at least a portion of the guide rod 222.

[0329] Specifically, when the second end member 2200 is attached to the second end 212 of the second shaft rod 210, at least a portion of the guide rod 222 extends into the second housing space 2112 and is fitted into the fitting member 213. For example, the end of the guide rod 222 closest to the second shaft rod 210 is inserted into the fitting member 213 to form a fitting connection. At this time, a portion of the outer wall of the guide rod 222 and the inner wall of the second end 212 of the second shaft rod 210 form the second housing chamber 201.

[0330] In some embodiments, the end of the guide rod 222 facing the second shaft 210 has a guide portion 2211, which is configured to form a rotational fitting structure together with the fitting member 213. Specifically, the guide portion 2211 extends spirally along the circumferential direction of the guide rod 222 in the direction facing the second shaft 210.

[0331] In some embodiments, as shown in Figures 36 to 38, the second roller brush 200 further includes a second brush member 230 fitted onto the second shaft 210, the second brush member 230 including a second cylindrical member 231 and a second brush member 232. The second cylindrical member 231 is fitted onto the second shaft 210 and configured so that the second cylindrical member 231 and the second shaft 210 are coaxial. The second brush member 232, for example, a blade, extends from the outer surface of the second cylindrical member 231 in a direction away from the second cylindrical member 231, and the axial length of the second cylindrical member 231 is less than or equal to the length of the second shaft 210. That is, the second cylindrical member 231 completely covers the outer circumferential surface of the second shaft 210, leaving a portion of the outer circumferential surface of the second end of the second shaft 210 exposed. In this way, the second cylindrical member will not be pressed and fall over, ensuring the strength and cleaning power of the brush member. Preferably, the axial length of the second cylindrical member 231 is equal to the length of the second shaft rod 210, and a sufficient cleaning width can be ensured while maintaining strength and cleaning power.

[0332] In some embodiments, the second shaft rod 210 is a rigid member, and the second cylindrical member 231 of the second brush member 230 can be directly fitted onto the second shaft rod 210.

[0333] In some embodiments, a rigid filler may be further filled between the second brush member 230 and the second shaft rod 210, and the rigid filler may be considered together as a component of the second shaft rod 210.

[0334] In some embodiments, both the second cylindrical member 231 and the second brush member 232 are made of a flexible material, such as a colloidal material, and are integrally molded.

[0335] In some embodiments, as shown in Figures 36 to 38, the end of the second cap member 220 away from the second shaft 210 has a second assembly structure 221, which is configured to assemble the second roller brush 200 into a cleaning module, and the second assembly structure 221 is fitted and mounted to a mounting position on the cleaning module. The distance between the opening of the second housing space 1311 and the first assembly structure 122 is less than or equal to the distance between the second brush member 230 and the second assembly structure 221. That is, when the second cap member 220 is attached to the second end 212, the end face of the second cylindrical member 231 closest to the second assembly structure 221 is either flush with the end face of the second end 212 closest to the second assembly structure 221, or spaced apart from the second assembly structure 221.

[0336] In some embodiments, the second cap member 220 includes a drive-side cap member and a driven-side cap member. When the second cap member 220 is the drive-side cap member, for example, the second cap member on the left in Figures 36 to 38, the second assembly structure 221 is a transmission structure connected to a drive unit in the cleaning module, which drives the drive unit to rotate the second roller brush 200.

[0337] When the second cap member 220 is a driven cap member, for example, the second cap member on the right in Figures 36 to 38, the second assembly structure 222 is a bearing structure, which facilitates the rotation of the second roller brush 200.

[0338] In some embodiments, as shown in Figures 36 to 38, the second cap member 220 further includes a second blocking structure 225 provided between the second assembly structure 221 and the guide rod 222 to prevent entangled material from excessively extending away from the second brush member. The circumferential size of the second blocking structure 225 is larger than the circumferential size of the second assembly structure 221 and the guide rod 222.

[0339] In some embodiments, as shown in Figures 36 to 38, the second accommodation space 2112 accommodates a portion of the guide rod 222, and the second blocking structure 225 is spaced a second predetermined distance from the opening of the second accommodation space 2112. In this way, entangled material can enter the second accommodation section 201 during the rotation process of the second roller brush 200.

[0340] As shown in Figure 37, in some embodiments, the number of guide portions 2211 on both end members differs, forming an inverse assembly design. In some embodiments, the number of guide portions on the drive-side cap member corresponds to the number of sets of second brush members. Typically, the number of guide portions is set to a divisor of the number of sets of second brush members to ensure the necessary alignment relationship for the blade after assembly. In some embodiments, the installation method of the drive-side second assembly member 222 directly corresponds to the guide portions. That is, the second assembly structure is configured in the circumferential direction with N first repeating unit shapes, where N is the number of guide portions. Each guide portion has N second repeating units along the circumferential direction, where N is a positive integer and N is 2 or greater. The first or second repeating units form regular or irregular polygons, and the regular polygons are plum-shaped N-sided polygons. In some embodiments, the N first repeating units in the first roller brush form regular polygons, and the N first repeating units in the second roller brush form plum shapes.

[0341] Embodiments of the present disclosure provide an automatic cleaning device comprising a cleaning brush, the cleaning brush comprising an end member, the end member comprising a guide rod, the cleaning brush further comprising a shaft member, the shaft member comprising a shaft, the shaft having a first end and a second end opposite in the axial direction, wherein the guide rod is fitted and attached to the first end and / or second end of the shaft.

[0342] In some embodiments, at least one of the first and second ends of the shaft has a housing space. In some embodiments, at least a portion of the shaft is solid.

[0343] In some embodiments, the accommodation space includes a first spatial segment, and the first spatial segment is configured to accommodate at least a portion of the guide rod.

[0344] In some embodiments, the accommodation space further includes a second spatial segment, the guide rod is provided with a guide portion, and the second spatial segment has a structure that conforms to the shape of the guide portion of the guide rod and is fitted and connected to the guide portion.

[0345] In some embodiments, the accommodation space further includes a third spatial segment, the end member is further provided with a guide shaft, and the third spatial segment is configured to accommodate at least a portion of the guide shaft.

[0346] In some embodiments, the inner diameter of the first spatial segment is larger than the inner diameter of the second spatial segment, and / or the inner diameter of the second spatial segment is larger than the inner diameter of the third spatial segment.

[0347] In some embodiments, the end member further includes at least one guide portion, which is provided on the outer circumferential surface of the guide rod, and the at least one guide portion is uniformly distributed in the circumferential direction of the guide rod.

[0348] In some embodiments, the guide portion is a projection formed by etching a groove from the outer circumferential surface of the guide rod.

[0349] In some embodiments, the end member includes a first end member and a second end member, wherein at least one of the shape, number, and size of the first guide portion of the first end member and the second guide portion of the second end member differs.

[0350] In some embodiments, the number of first guide portions of the first end member is greater than the number of second guide portions of the second end member.

[0351] In some embodiments, the number of second guide portions of the second end member and the number of first guide portions of the first end member are not divisors of each other.

[0352] In some embodiments, the number of first guide portions of the first end member is odd, and the number of second guide portions of the second end member is even.

[0353] In some embodiments, the end member further includes a guide shaft, wherein the outer diameter of the guide shaft is smaller than the outer diameter of the guide rod.

[0354] In some embodiments, the guide shaft includes a buckle member provided along its outer surface, and the buckle member has an annular groove structure or an annular projection structure.

[0355] In some embodiments, the end member includes a first end member and a second end member, and the guide shafts of the first end member and the second end member have the same structure.

[0356] In some embodiments, one end of the guide shaft is inserted into the guide rod.

[0357] In some embodiments, the guide rod is an injection-molded product, and the guide shaft is a metal part. Compared to the prior art, the above technical solution has the following beneficial technical effects.

[0358] By providing a structure in which the end member and the shaft are fitted together, the ease of attaching the end member can be further improved, and the stability of the attachment structure can be further enhanced.

[0359] Each example in this specification is described incrementally, and it should be noted that each example focuses on the differences from other examples, and identical or similar parts between examples may be referenced to one another. Systems or apparatus disclosed in the examples are described briefly, as they correspond to the method of disclosure in the examples, and relevant parts should be referred to in the description of the method section.

[0360] The above embodiments are used to illustrate the technical solutions of the present disclosure and are not limiting thereto. While the present disclosure has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in each of the above embodiments can still be modified or some of their technical features can be replaced by equivalent substitutions, and that such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present disclosure.

Claims

1. An automatic cleaning device comprising a cleaning brush, wherein the cleaning brush comprises an end member, the end member comprises a guide rod, the cleaning brush further comprises a shaft member, the shaft member comprises a shaft rod, the shaft rod has a first end and a second end opposite to each other in the axial direction, and the guide rod is attached to the first end and / or second end of the shaft rod in conjunction with each other.

2. The automatic cleaning device according to claim 1, wherein at least one of the first end and the second end of the shaft has a storage space.

3. The automatic cleaning device according to claim 1, wherein at least a portion of the shaft is a solid structure.

4. The automatic cleaning device according to claim 2, wherein the accommodation space includes a first spatial segment, and the first spatial segment is configured to accommodate at least a portion of the guide rod.

5. The automatic cleaning device according to claim 2, wherein the storage space further includes a second spatial segment, the guide rod is provided with a guide portion, the second spatial segment has a structure that conforms to the shape of the guide portion of the guide rod, and is connected in accordance with the guide portion.

6. The automatic cleaning device according to claim 5, wherein the housing space further includes a third spatial segment, a guide shaft is further provided on the end member, and the third spatial segment is configured to house at least a portion of the guide shaft.

7. The automatic cleaning device according to claim 6, wherein the inner diameter of the first spatial segment is larger than the inner diameter of the second spatial segment, and / or the inner diameter of the second spatial segment is larger than the inner diameter of the third spatial segment.

8. The automatic cleaning device according to claim 1, wherein the end member further includes at least one guide portion, the guide portion being provided on the outer circumferential surface of the guide rod, and the at least one guide portion being uniformly distributed in the circumferential direction of the guide rod.

9. The automatic cleaning device according to claim 8, wherein the guide portion is a protruding portion formed by etching the outer surface of the guide rod to create a groove.

10. The automatic cleaning device according to claim 8 or 9, wherein the end member includes a first side end member and a second side end member, and at least one of the shape, number, and size of the first guide portion of the first side end member and the second guide portion of the second side end member is different.

11. The automatic cleaning device according to claim 10, wherein the number of first guide portions of the first end member is greater than the number of second guide portions of the second end member.

12. The automatic cleaning device according to claim 11, wherein the number of second guide portions of the second end member and the number of first guide portions of the first end member are not divisors of each other.

13. The automatic cleaning device according to claim 10, wherein the number of first guide portions of the first end member is odd, and the number of second guide portions of the second end member is even.

14. The automatic cleaning device according to claim 1, wherein the end member further includes a guide shaft, and the outer diameter of the guide shaft is smaller than the outer diameter of the guide rod.

15. The automatic cleaning device according to claim 14, wherein the guide shaft includes a buckle member provided along its outer circumferential surface, and the buckle member has an annular groove structure or an annular projection structure.

16. The automatic cleaning device according to claim 14, wherein the end member includes a first end member and a second end member, and the guide shaft structure of the first end member and the guide shaft structure of the second end member are the same.

17. The automatic cleaning device according to claim 14, wherein one end of the guide shaft is inserted into the guide rod.

18. The automatic cleaning device according to any one of claims 14 to 17, wherein the guide rod is an injection-molded product and the guide shaft is a metal part.

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