Automatic cleaning equipment

Abstract

An automatic cleaning device, comprising: a first rolling brush (100), the first rolling brush (100) comprising a first brush member (132); the second rolling brush (200) and the first rolling brush (100) are roughly arranged side by side, and the second rolling brush (200) comprises a second brush piece (232); wherein the first brush piece (132) and the second brush piece (232) rotate to the positions close to each other along with the first rolling brush (100) and the second rolling brush (200), and the close points of the first brush piece (132) and the second brush piece (232) dynamically move in the preset direction along with the rotation of the two rolling brushes.

Description

[0001] Cross - reference to related applications

[0002] This utility model claims the priority of Chinese patent applications with application numbers 202211734557.9, 202211739051.7, 202211739794.4, 202211740301.9, and 202211736856.6, which were filed on December 30, 2022. The entire contents of the above - mentioned Chinese patent applications are hereby incorporated by reference in their entirety as part of this utility model. Technical field

[0003] This utility model relates to the technical field of cleaning equipment, and more particularly, to an automatic cleaning device. Background technique

[0004] With the continuous development of technology, automatic cleaning devices, such as floor - sweeping robots and mopping - sweeping integrated machines, have been widely adopted in families. For a cleaning robot with a floor - sweeping function, in order to achieve the floor - sweeping function, a cleaning brush is provided to roll up garbage of different sizes on the ground and suck it into a garbage collection box.

[0005] The structure and setting method of the cleaning brush have become one of the important factors affecting the cleaning effect of automatic cleaning devices. However, the existing single - brush structure cannot improve the cleaning effect of automatic cleaning devices, and cannot perform targeted cleaning for different cleaning - surface materials, thus restricting the wide application of automatic cleaning devices. Summary of the utility model

[0006] In view of the problems existing in the prior art, an embodiment of this utility model provides an automatic cleaning device, including: a first rolling brush, the first rolling brush including a first brush member; and a second rolling brush, arranged substantially side - by - side with the first rolling brush, the second rolling brush including a second brush member; wherein, when the first brush member and the second brush member rotate to positions close to each other with the first rolling brush and the second rolling brush, the adjacent points of the first brush member and the second brush member move dynamically along a predetermined direction as the two rolling brushes rotate.

[0007] In some embodiments, the automatic cleaning device further includes an air duct inlet, and the air duct inlet is arranged downstream in the predetermined direction.

[0008] In some embodiments, the predetermined direction is along the axial direction of the first rolling brush or the second rolling brush, from both ends of the first rolling brush or the second rolling brush towards the middle of the first rolling brush or the second rolling brush.

[0009] In some embodiments, the first brush member and / or the second brush member is of a V - shaped structure.

[0010] In some embodiments, the predetermined direction is along the axial direction of the first rotatable brush or the second rotatable brush, and is a direction pointing from one end of the first rotatable brush or the second rotatable brush to the other end of the first rotatable brush or the second rotatable brush.

[0011] In some embodiments, the first brush member and / or the second brush member is a spiral structure.

[0012] In some embodiments, the first brush member and the second brush member are formed when the first rotatable brush and the second rotatable brush rotate to a position close to each other and the first brush member and the second brush member are located between the first rotatable brush and the second rotatable brush.

[0013] In some embodiments, at least one of the first rotatable brush and the second rotatable brush is incompressible.

[0014] In some embodiments, at least one of the first rotatable brush and the second rotatable brush further includes a first cylindrical member and a first shaft rod.

[0015] In some embodiments, when the first rotatable brush and the second rotatable brush rotate, there is no contact between the first brush member and the second brush member.

[0016] In some embodiments, when the first rotatable brush and the second rotatable brush rotate, there is mutual abutment between the first brush member and the second brush member.

[0017] In some embodiments, the first cylindrical member cannot be compressed in the length direction of the first shaft rod.

[0018] In some embodiments, the first shaft rod is a rigid rod member.

[0019] In some embodiments, the lengths of the first cylindrical member and the first shaft rod are substantially the same.

[0020] In some embodiments, the first cylindrical member and the first shaft rod are coaxially arranged.

[0021] Compared with the prior art, the above technical solution of the present utility model has the following beneficial technical effects:

[0022] The first brush member and the second brush member rotate to a position close to each other along with the first rotatable brush and the second rotatable brush, the adjacent points of the first brush member and the second brush member move dynamically along the predetermined direction as the two rotatable brushes rotate, and the interference area is configured to move dynamically along the predetermined direction, so that dust at all positions of the operation surface swept by the rotatable brushes has the opportunity to be sucked into the air duct and then into the dust box in sequence with greater suction force. Description of the Drawings

[0023] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present utility model, and are used together with the specification to explain the principles of the present utility model. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other accompanying drawings based on these drawings without creative efforts. In the accompanying drawings:

[0024] Figure 1 Schematic perspective view of an automatic cleaning device provided for some embodiments of the present utility model;

[0025] Figure 2 Bottom view of an automatic cleaning device provided for some embodiments of the present utility model;

[0026] Figure 3 Schematic view of a cleaning module structure provided for some embodiments of the present utility model;

[0027] Figure 4 Cross-sectional view of a cleaning module provided for some embodiments of the present utility model;

[0028] Figure 5 Longitudinal cross-sectional view of a first roller brush provided for some embodiments of the present utility model;

[0029] Figure 6 Transverse cross-sectional view of a first roller brush provided for some embodiments of the present utility model;

[0030] Figure 6-1 Transverse cross-sectional view of a second roller brush provided for some embodiments of the present utility model;

[0031] Figure 6-2 Transverse cross-sectional view of a second roller brush provided for other embodiments of the present utility model;

[0032] Figure 7 Exploded perspective view of a cleaning brush according to an example provided by the present utility model;

[0033] Figure 8 For Figure 7 Schematic perspective view of a first end member of a cleaning brush;

[0034] Figure 9 For Figure 7 Partial exploded view of a first end member of a cleaning brush and a shaft rod at an angle;

[0035] Figure 10 For Figure 7 Partial exploded view of a first end member of a cleaning brush and a shaft rod at another angle;

[0036] Figure 11 ForFigure 7 Exploded perspective view of the cleaning brush from another angle;

[0037] Figure 12 For Figure 7 Exploded partial view of the second end member and the shaft rod of the cleaning brush from an angle;

[0038] Figure 13 Exploded perspective view of an example of the cleaning brush provided according to the present utility model;

[0039] Figure 14 For Figure 13 Schematic cross-sectional view of the cleaning brush;

[0040] Figure 15 For Figure 13 Stereoscopic structure diagram of an example of the end member of the cleaning brush;

[0041] Figure 16 For Figure 13 Schematic perspective view of an example of the fitting of the shaft rod;

[0042] Figure 17 For Figure 13 Schematic perspective view of an example of the guiding fit structure of the end member and the shaft rod of the cleaning brush;

[0043] Figure 18 For Figure 17 Exploded view of the guiding fit structure;

[0044] Figure 19 Schematic exploded perspective view of another example of the cleaning brush provided according to the present utility model;

[0045] Figure 20 For Figure 19 Exploded partial view of the cleaning brush from an angle;

[0046] Figure 21 For Figure 19 Exploded partial view of the cleaning brush from another angle;

[0047] Figure 22 Schematic structure diagram of the roller brush provided in some embodiments of the present utility model;

[0048] Figure 23 For Figure 2 Schematic cross-sectional view of the roller brush in

[0049] Figure 24 Schematic enlarged partial view of the roller brush provided in some embodiments of the present utility model;

[0050] Figure 25Partial enlarged structural schematic diagram of the rolling brush provided by some embodiments of the present utility model;

[0051] Figure 26 Partial enlarged structural schematic diagram of the rolling brush provided by some embodiments of the present utility model;

[0052] Figure 27 Structural schematic diagram of another perspective of the cleaning module provided by some embodiments of the present utility model;

[0053] Figure 28 Cross-sectional structural schematic diagram of the cleaning module provided by some embodiments of the present utility model;

[0054] Figure 29 Structural schematic diagram of the first rolling brush and the second rolling brush provided by some embodiments of the present utility model;

[0055] Figure 30 Structural schematic diagram of the first rolling brush and the second rolling brush provided by some embodiments of the present utility model;

[0056] Figure 31 Structural schematic diagram of the first rolling brush provided by some embodiments of the present utility model;

[0057] Figure 32 Structural schematic diagram of the first rolling brush and the second rolling brush provided by some embodiments of the present utility model;

[0058] Figure 33 Exploded structural schematic diagram of the first rolling brush provided by some embodiments of the present utility model;

[0059] Figure 34 Exploded structural schematic diagram of the first rolling brush provided by some embodiments of the present utility model;

[0060] Figure 35 Cross-sectional structural schematic diagram of the first rolling brush provided by some embodiments of the present utility model;

[0061] Figure 36 Exploded structural schematic diagram of the second rolling brush provided by some embodiments of the present utility model;

[0062] Figure 37 Exploded structural schematic diagram of the second rolling brush provided by some embodiments of the present utility model;

[0063] Figure 38 Cross-sectional structural schematic diagram of the second rolling brush provided by some embodiments of the present utility model. Detailed implementation manners

[0064] In order to make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0065] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, such that a commodity or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such commodity or device. Without further limitation, an element defined by the statement "including one" does not exclude the existence of another identical element in the commodity or device including the said element.

[0066] In the related art, for automatic cleaning devices such as floor-sweeping robots, there are double-roller models. For such double-roller models, the two rollers are usually made of soft brushes that are prone to deformation. The double-soft-brush roller structure allows for a large degree of deformation and good passability for large-particle garbage. However, due to the complex process and high cost of the soft roller brush and its tendency to deform easily during long-term use, how to reasonably set the structures of the two rollers has become a technical problem that urgently needs to be solved.

[0067] An embodiment of the present utility model provides an automatic cleaning device, comprising: a mobile platform configured to move on an operation surface; a cleaning module assembled on the mobile platform and configured to clean the operation surface, the cleaning module including: a first roller brush disposed along a first direction perpendicular to the front-rear axis of the mobile platform, the first roller brush including: a first brush member; a first shaft; and a first filler configured to be sleeved on the first shaft so that the first filler and the first shaft are coaxial; and a second roller brush assembled on the cleaning module along a direction parallel to the first roller brush, the second roller brush including: 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 so that the first filler has a preset thickness.

[0068] The automatic cleaning device provided by the embodiment of the present utility model, by setting the double-roller brush structure of the first roller brush and the second roller brush, setting the first filler in the first roller brush as an elastic member, and setting the second shaft member as a rigid member, enables the automatic cleaning device to effectively clean the ground based on two types of rollers, namely, soft and hard, improves the passability of garbage between the first roller brush and the second roller brush, and reasonably configures the interference amount between the two types of soft and hard rollers and the ground, thereby overall improving the cleaning efficiency of the ground.

[0069] In an embodiment of the present utility model, one of the rotary brushes is set as a hard brush, which is only composed of an internal hard core and an external rubber sheet. It has a simple structure, high dimensional accuracy, and is easy to control the interference amount with the ground during cleaning, ensuring that the cleaning effect and the noise during cleaning are within a suitable range. Moreover, since the hard brush has no sponge, it has little deformation after long-term use, extending its service life. The combination of one soft and one hard can also ensure sufficient passability for large particle garbage.

[0070] The optional embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0071] Figures 1-2 is a schematic structural diagram of an automatic cleaning device shown according to an exemplary embodiment. As Figures 1-2 shown, the automatic cleaning device can be a vacuum floor-sweeping robot, a mopping / brushing robot, a window-climbing robot, etc. The automatic cleaning device can include a mobile platform 1000, a sensing system 2000, a control system (not shown), a driving system 3000, an energy system (not shown), a human-machine interaction system 4000, and a cleaning module 5000. Among them:

[0072] The mobile platform 1000 can be configured to automatically move along a target direction on an operation surface. The operation surface can be the surface to be cleaned by the automatic cleaning device. In some embodiments, if the automatic cleaning device is a mopping robot, the automatic cleaning device works on the ground, and the ground is the operation surface; if the automatic cleaning device is a window-cleaning robot, the automatic cleaning device works on the outer surface of the glass of a building, and the glass is the operation surface; if the automatic cleaning device is a pipeline cleaning robot, the automatic cleaning device works on the inner surface of the pipeline, and the inner surface of the pipeline is the operation surface. For the sole purpose of demonstration, the following description in the present utility model takes the mopping robot as an example for illustration.

[0073] In some embodiments, the mobile platform 1000 can 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 operation decisions according to unexpected environmental inputs; the non-autonomous mobile platform itself cannot adaptively make operation decisions according to unexpected environmental inputs, but can execute a pre-set program or run according to a certain logic. Correspondingly, when the mobile platform 1000 is an autonomous mobile platform, the target direction can be determined by the automatic cleaning device itself; when the mobile platform 1000 is a non-autonomous mobile platform, the target direction can be set by the system or manually.

[0074] The perception system 2000 includes a position determination device (not shown in the figure) located above the mobile platform 1000, a buffer (not shown in the figure) located at the forward part of the mobile platform 1000, a cliff sensor (not shown in the figure), an ultrasonic sensor (not shown in the figure), an infrared sensor (not shown in the figure), a magnetometer (not shown in the figure), an accelerometer (not shown in the figure), a gyroscope (not shown in the figure), an odometer (not shown in the figure), and other sensing devices at the bottom of the mobile platform, providing various position information and motion state information of the machine to the control system.

[0075] For the convenience of description, the following direction definitions are made: The automatic cleaning device can be calibrated through the following three mutually perpendicular axes: the transverse axis Y, the front-back axis X, and the vertical axis Z. The direction pointed by the arrow along the front-back axis X is marked as "backward", and the direction opposite to the arrow direction along the front-back axis X is marked as "forward". The transverse axis Y is substantially the direction along the width of the automatic cleaning device. The direction pointed by the arrow along the transverse axis Y is marked as "leftward", and the direction opposite to the arrow direction along the transverse axis Y is marked as "rightward". The vertical axis Z is the direction extending upward from the bottom surface of the automatic cleaning device. As Figure 1 shown, the direction along the front-back axis X is defined as the second direction, and the second direction is, for example, forward or backward; the direction perpendicular to the second direction in the horizontal plane is the first direction, and the first direction is, for example, leftward or rightward.

[0076] The control system (not shown in the figure) is arranged on the circuit board inside the mobile platform 1000 and includes a computing processor, such as a central processing unit and an application processor, communicating with a non-transitory memory, such as a hard disk, a flash memory, and a random access memory. The application processor is configured to receive the environmental information sensed by the multiple sensors transmitted by the perception system, use a positioning algorithm, such as SLAM, to draw an instant map of the environment where the automatic cleaning device is located based on the obstacle information fed back by the position determination device, etc., and autonomously determine the driving path according to the environmental information and the environmental map, and then control the driving system 3000 to perform operations such as moving forward, backward, and / or turning according to the autonomously determined driving path. Further, the control system can also decide whether to start the cleaning module 5000 to perform cleaning operations according to the environmental information and the environmental map.

[0077] The drive system 3000 can execute drive commands based on specific distance and angle information, such as the x, y, and θ components, to manipulate the automatic cleaning device to travel across the ground. The drive system 3000 includes a drive wheel assembly. The drive system 3000 can control the left and right wheels simultaneously. To more precisely control the movement of the machine, it is preferred that the drive system 3000 includes a left drive wheel assembly and a right drive wheel assembly respectively. The left and right drive wheel assemblies are symmetrically arranged along the transverse axis defined by the mobile platform 1000. To enable the automatic cleaning device to move more stably or have stronger movement ability on the ground, the automatic cleaning device can include one or more steering components. The steering components can be driven wheels or driven wheels, and their structural forms include but are not limited to universal wheels. The steering components can be located in front of the drive wheel assembly.

[0078] The energy system (not shown in the figure) includes a rechargeable battery, such as a nickel-metal hydride battery and a lithium battery. The rechargeable battery can be connected with a charge control circuit, a battery pack charging temperature detection circuit, and a battery under-voltage monitoring circuit. The charge control circuit, the battery pack charging temperature detection circuit, and the battery under-voltage monitoring circuit are then connected to the microcontroller control circuit. The host is connected to the charging pile through the charging electrode arranged on the side or below the fuselage for charging.

[0079] The human-machine interaction system 4000 includes buttons on the host panel for users to select functions; it can also include a display screen and / or an indicator light and / or a speaker. The display screen, the indicator light, and the speaker show the current state of the machine or function selection items to the user; it can also include a mobile phone client program. For a path-navigation type cleaning device, the mobile phone client can show the map of the environment where the device is located and the position of the machine to the user, and can provide more rich and user-friendly function items.

[0080] As Figure 2As shown, the cleaning module 5000 includes a dust box, a blower, and a main brush module. The main brush module sweeps the garbage on the ground to the front of the suction port between the main brush module and the dust box, and then it is sucked into the dust box by the suction gas generated by the blower and passing through the dust box. The dust removal ability of the floor sweeper can be characterized by the dust pickup efficiency DPU (Dust pickup efficiency) of the garbage. The dust pickup efficiency DPU is affected by the wind utilization rate of the air duct formed by the suction port, the dust box, the blower, the air outlet, and the connecting components between the four, and is affected by the type and power of the blower. It is a complex system design problem. Compared with ordinary plug-in vacuum cleaners, improving the dust removal ability is more significant for cleaning and automatic cleaning equipment with limited energy. Because improving the dust removal ability directly and effectively reduces the energy requirements. That is to say, a machine that could clean 80 square meters of the ground with one charge can be upgraded to clean 180 square meters or more with one charge. And the service life of the battery with fewer charging times will also be greatly increased, so that the frequency of users replacing the battery will also be reduced. More intuitively and importantly, improving the dust removal ability is the most obvious and important user experience, and users will directly draw conclusions on whether the floor is swept cleanly / wiped cleanly.

[0081] Figure 2 is Figure 1 a schematic bottom view structure diagram of the automatic cleaning equipment in, as Figure 2 shown, the automatic cleaning equipment includes a mobile platform 1000, and the mobile platform 1000 is configured to move freely on the operation surface. A cleaning module 5000 is arranged at the bottom of the mobile platform 1000, and the cleaning module 5000 is configured to clean the operation surface. The cleaning module 5000 includes a driving unit 5100, a roller brush frame 5200, and a roller brush 5300 assembled in the roller brush frame 5200. The driving unit 5100 provides a driving force for forward or reverse rotation, and applies the driving force to the roller brush 5300 through a multi-stage gear set. The roller brush 5300 rotates under the action of the driving force to clean the operation surface, or the roller brush 5300 rotates under the action of the driving force to collect dust.

[0082] As Figure 2As shown, in the roller brush frame 5200, there are a front cleaning brush mounting position 5211 and a rear cleaning brush mounting position 5212 for accommodating the cleaning roller brush. The front cleaning brush mounting position 5211 has a first end 52111 and a second end 52112 opposite to the first end 52111. One end of the first roller brush 100 is snap-fixed at the first end 52111, and the other end of the first roller brush 100 is snap-fixed at the second end 52112. In some embodiments, the front cleaning brush mounting position 5211 is a long groove structure in the moving platform, and the long groove structure extends along the first direction. The rear cleaning brush mounting position 5212 has a third end 52121 and a fourth end 52122 opposite to the third end 52121. In some embodiments, the rear cleaning brush mounting position 5212 has substantially the same structure as the front cleaning brush mounting position 5211. For example, it is also a long groove structure in the moving platform, and the long groove structure extends along the first direction. The second roller brush can be installed in the long groove of the rear cleaning brush mounting position 5212 through the opening of the long groove structure. Among them, the two long groove structures are parallel to each other in the second direction. The shape and size of the long groove structure are not limited in any way, as long as at least a part of the first roller brush and the second roller brush can be accommodated. 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-rear axis X, and the second end of the front cleaning brush mounting position 5211 and the fourth end of the rear cleaning brush mounting position 5212 are located on the other side of the front-rear axis X.

[0083] It should be noted that in the following embodiments of the present invention, the long groove structure near the steering wheel on the automatic cleaning device is taken as the front cleaning brush mounting position 5211, and the long groove structure far from the steering wheel is taken as the rear cleaning brush mounting position 5212 for detailed description. Of course, vice versa is also possible.

[0084] As Figure 2 shown, in some embodiments, the automatic cleaning device includes two cleaning roller brushes 5300. One cleaning roller brush is arranged at the front cleaning brush mounting position 5211 and is regarded as the "front roller brush"; the other cleaning roller brush is arranged at the rear cleaning brush mounting position 5212 and is regarded as the "rear roller brush". The front roller brush can be installed in the front cleaning brush mounting position 5211 through the opening of the long groove structure, and the rear roller brush can be installed in the rear cleaning brush mounting position 5212 through the opening of the long groove structure.

[0085] Figure 3 This is the combined structure of the cleaning module provided by some embodiments of the present invention. Figure 4 This is the cross-sectional structure of the cleaning module provided by some embodiments of the present invention. As Figure 3 and Figure 4As shown, the rotary brush 5300 assembled within the rotary brush frame 5200 includes: a first rotary brush 100 disposed along a first direction perpendicular to the front-rear axis of the mobile platform. The first rotary brush 100 includes: a first brush member; a first shaft 110; and a first filler 120 configured to be sleeved on the first shaft 110 such that the first filler 120 is coaxial with the first shaft 110; and a second rotary brush 200 disposed along a direction parallel to the first rotary brush 100. In some embodiments, the first rotary brush 100 and / or the second rotary brush 200 may also be assembled in other directions, such as a second direction non-parallel to the front-rear axis. Obviously, the second direction forms a certain angle with both the first direction and the front-rear axis. The second rotary brush 200 includes: a second brush member; and a second shaft member 220 coaxial with the second brush member. Wherein, the first filler 120 is an elastic member, 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 preset thickness. The assembled first filler is usually a hollow cylindrical structure with a preset thickness and has a first inner diameter and a first outer diameter after the first filler is assembled. However, in some embodiments, the first filler does not need to be a continuous cylinder and may be a shape remaining after arbitrary cutting on the basis of a cylinder shape, such as a discontinuous cylinder shape, or one or more independent parts, but their common feature is that they all have the same thickness after assembly, and the inner surface and the outer surface of this thickness respectively have the diameters of the corresponding cylinders, which are the first inner diameter and the first outer diameter of the first filler. The first rotary brush 100 and the second rotary brush 200 rotate in opposite directions relative to each other to roll up the garbage on the operation surface when performing a cleaning task or spit out the garbage in the dust box when performing a dust collection task. It should be noted that for this embodiment, the first rotary brush 100 may be the "front rotary brush" described above or the "rear rotary brush" described above, and the second rotary brush 200 may also be the "front rotary brush" described above or the "rear rotary brush" described above, and this is not limited herein.

[0086] Specifically, Figure 5 is a cross-sectional view of the first rotary brush provided by some embodiments of the present invention along the second direction, Figure 6 is a cross-sectional view of the first rotary brush provided by some embodiments of the present invention along the first direction, as Figure 5 and Figure 6 shown.

[0087] The first rotary brush 100 includes a first shaft 110. At least one end of the first shaft 110 is connected to a multi-stage gear set, receiving the driving force of the driving unit 5100 and realizing forward or reverse rotation. The first shaft 110 is in the shape of a long cylinder, a long square prism, a long multi-prismatic column, etc., and there is no limitation in this regard. Hereinafter, the long cylinder shape will be taken as an example for description. The axis of the first shaft 110 can be regarded as the rotation axis of the first rotary brush 100. When the first rotary brush 100 is installed on the mobile platform, the driving system 3000 can drive the first shaft 110 to rotate, thereby driving the first brush member 130 on the surface of the first shaft 110 to perform cleaning.

[0088] The first rotary brush 100 further includes a first filler 120. The first filler 120 is configured to be sleeved on the first shaft 110 such that the first filler 120 is coaxial with the first shaft 110. As Figure 4 shown, the cross-section of the first filler 120 is an annular structure, and the shape of its inner ring matches the cross-section shape of the first shaft 110. The shape of the inner ring can be circular, square, polygonal, etc., and there is no limitation in this regard. Hereinafter, the inner ring being circular will be taken as an example for description. The outer ring shape is generally circular. When the cross-section of the first filler 120 is circular, the cross-section of the first filler 120 has an inner diameter and an outer diameter. Its inner diameter is approximately equal to the diameter of the first shaft 110 to achieve a seamless socket connection between the first filler 120 and the first shaft 110, and its outer diameter is approximately equal to the inner diameter of the first cylindrical member 131 to achieve a seamless socket connection between the first filler 120 and the first cylindrical member 131. The first filler 120 is a compressible elastic material, and the first filler 120 has the characteristic of being compressed inward under force and returning to its original state after the force is removed, such as sponge, organic flexible material, resin material, foam material, etc., and there is no exhaustive list in this regard. In addition, the first filler 120 can also be a hollow material or structure with the same compressible characteristics, such as a spring or a spring piece, and there is no exhaustive list in this regard either.

[0089] The first rotatable brush 100 further includes a first brush member 130. The first brush member 130 is sleeved outside the first filling member 120. The first brush member 130 includes a first cylindrical member 131. The first cylindrical member 131 is configured to be sleeved outside the first filling member 120 such that the first cylindrical member 131 is coaxial with the first shaft rod 110. The first cylindrical member 131 is generally cylindrical, and its length is substantially the same as that of the first shaft rod 110. The first cylindrical member 131 is generally compressible, for example, made of elastic plastic or rubber material, and can be compressed inward to deform under the action of an external force and return to its original state after the external force is removed. The first cylindrical member 131 generally has a certain thickness to enhance the overall wear resistance of the first brush member 130. And the first brush member 130 further includes first brush elements 132. The first brush elements 132 can be multiple sheet-like structures. The first brush elements 132 extend from the outer surface of the first cylindrical member 131 in a direction away from the first cylindrical member 131. At least one first brush element 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 elements 132 can be in other forms such as blades or bristles.

[0090] In some embodiments, the number of the first brush elements 132 is multiple. Each first brush element 132 has a spiral structure on the outer surface of the first cylindrical member 131. The multiple first brush elements 132 are distributed approximately evenly along the circumferential direction of the first cylindrical member 131, and the spiral structures of the multiple first brush elements 132 are substantially parallel. By designing the first brush elements 132 as spiral structures, when the front and rear rotatable brushes rotate in opposite directions, they can easily roll up the garbage, and will not generate too large an impact force on the first brush elements 132 to cause damage, thereby improving the service life.

[0091] In some embodiments, the number of the first brush elements 132 is multiple. Each first brush element 132 has a V-shaped structure on the outer surface of the first cylindrical member 131. The multiple first brush elements 132 are distributed approximately evenly along the circumferential direction of the first cylindrical member 131, and the tips of the V-shaped structures of the multiple first brush elements 132 point in the same direction in the circumferential direction of the first cylindrical member 131. By designing the first brush elements 132 as V-shaped structures, when the front and rear rotatable brushes rotate in opposite directions, they can easily roll up the garbage, and will not generate too large an impact force on the first brush elements 132 to cause damage, thereby improving the service life.

[0092] In some embodiments, a plurality of first bumps 1321 are provided on the surface of the first brush elements 132. The plurality of first bumps on the first brush elements 132 are evenly distributed along the extending direction of the surface of the first brush elements 132. The plurality of first bumps 1321 can increase the friction force between the brush member and the garbage, making the cleaning cleaner.

[0093] In some embodiments, such as Figure 6-1As shown, the second brush roll 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 sleeved outside the second shaft member 220, the second shaft member 220 constitutes the second shaft rod of the second brush roll 200, the second shaft member 220 is a rigid hard member, and the second shaft member 220 includes at least one fitting 213 (for example, the fitting 213 can be provided at one or both ends of the second shaft member 220, also called the fitting structure) provided at at least one end of the second shaft member 220. The second shaft member 220 is connected to the multi-stage gear set of the drive system 3000 through the fitting 213, receives the driving force of the drive system 3000 and realizes forward or reverse rotation. Among them, the outer shape of the second shaft member 220 is a long cylindrical shape, a long square column shape or a long multi-prismatic column shape, which is not limited herein. Hereinafter, the long cylindrical shape will be taken as an example for illustration.

[0094] In some embodiments, as Figure 6-1 shown, the second shaft member 220 includes a hollow structure 2210, the hollow structure 2210 extends axially along the second shaft member 220 through the axis of the second shaft member 220, and the second shaft member 220 has a second inner diameter D 二内 and a second outer diameter D 二外 , the second inner diameter D 二内 and the second outer diameter D 二外 constitute the radial thickness of the second shaft member 220. At least one end (for example, one or both ends of the second shaft member 220) of the hollow structure includes a stepped portion, the stepped portion includes one, two or three levels of steps. For example, when the stepped portion is two levels of steps, the end face of the hollow structure 2210 has a third inner diameter and a fourth inner diameter. Among them, the second inner diameter is less than the third inner diameter is less than the fourth inner diameter. Among them, the stepped portion forms a receiving cavity 2222 with the largest diameter at the outermost end of the hollow structure 2210 (for example, the receiving cavity 2222 has a fourth inner diameter), the fitting 213 has an outer shape structure matching the stepped portion, and after the fitting 213 is assembled to the stepped portion, it is fixedly or detachably connected to the hollow structure. The fitting 213 is used to be directly or indirectly connected to the multi-stage gear set of the drive system, receive the driving force of the drive system 3000 and realize the forward or reverse rotation of the second shaft member 220.

[0095] As Figure 6-1 and Figure 6-2As shown, the second roller brush 200 further includes a second brush member 230. The second brush member 230 is sleeved outside the second shaft member 220. The second brush member 230 includes a second cylindrical member 231. The second cylindrical member 231 is configured to be sleeved outside the second shaft member 220 such that the second cylindrical member 231 is coaxial with the second shaft member 220. The second cylindrical member 231 is generally a cylindrical tube, and its length is substantially the same as the length of the second shaft member 220. The second cylindrical member 231 is generally compressible, for example, made of elastic plastic or rubber material, to facilitate being sleeved outside the second shaft member 220. The second cylindrical member 231 generally has a certain thickness to enhance the overall wear resistance of the second brush member 230. There is generally no filler between the second cylindrical member 231 and the second shaft member 220, or at least no flexible or elastic filler. When a rigid filler is provided, since the second shaft member is also rigid, the rigid filler and the second shaft member can be regarded as the same functional part, that is, two rigid parts together form the second shaft member, and its outer diameter is obviously the outer diameter of the entire rigid part, that is, the second outer diameter D of the second shaft member. 二外 And the second brush member 230 further includes a second brush piece 232. The second brush piece 232 can be multiple sheet-like structures. The second brush piece 232 extends from the outer surface of the second cylindrical member 231 in a direction away from the second cylindrical member 231. At least one second brush piece 232 extends from one end of the second cylindrical member 231 to the other end of the second cylindrical member 231 along the axial direction of the second cylindrical member 231. The second brush piece 232 can be in other forms such as blades or bristles.

[0096] In some embodiments, the number of the second brush pieces 232 is multiple. Each second brush piece 232 is in a spiral structure on the outer surface of the second cylindrical member 231. The multiple second brush pieces 232 are distributed approximately evenly along the circumferential direction of the second cylindrical member 231, and the spiral structures of the multiple second brush pieces 232 are substantially parallel. The shape of the second brush piece 232 matches the shape of the first brush piece 132, that is, when the shape of the second brush piece 232 is a spiral structure, the shape of the first brush piece 132 is also a spiral structure. By designing the second brush piece 232 as a spiral structure, when the front and rear roller brushes rotate in opposite directions, the garbage can be easily rolled up, and no excessive impact force will be generated on the second brush piece 132 to cause damage, thus improving the service life.

[0097] In some embodiments, the number of the second brush members 232 is plural. Each second brush member 232 has a V-shaped structure on the outer surface of the second cylindrical member 231. The plural second brush members 232 are distributed substantially uniformly in the circumferential direction of the second cylindrical member 231, and the tips of the V-shaped structures of the plural second brush members 232 point in the same direction in the circumferential direction of the second cylindrical member 231. The shape of the second brush member 232 matches the shape of the first brush member 132. That is, when 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. By designing the second brush member 132 as a V-shaped structure, when the front and rear roller brushes rotate towards each other, the tips of the V-shaped structures of the second brush members 232 can interfere with the tips of the V-shaped structures of the first brush members 132, so as to easily roll up the garbage.

[0098] In some other embodiments, the second roller brush 200 can also be implemented in other forms, such as Figure 6-2 shown in the figure. 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 the second brush member 230 is as described in the above embodiments, and will not be elaborated here. The second shaft component as described in the above embodiments is composed of the second shaft rod 240 and the second filler 250. The second filler 250 is sleeved on the second shaft rod 240 so that the second filler 250 and the second shaft rod 240 are coaxial. The cross-section of the second filler 250 is an annular structure, and the shape of its inner ring matches the cross-sectional shape of the second shaft rod 240. The shape of the inner ring can be circular, square, polygonal, etc., and is not limited thereto. Hereinafter, the inner ring is taken as an example of a circle. The shape of the outer ring is generally circular. When the cross-section of the second filler 250 is an annular shape, the cross-section of the second filler 250 has an inner diameter and an outer diameter. Its inner diameter is approximately equal to the diameter of the second shaft rod 240 to achieve a seamless socket connection between the second filler 250 and the second shaft rod 240, and its outer diameter is approximately equal to the inner diameter of the second cylindrical member 231 to achieve a seamless socket connection between the second filler 250 and the second cylindrical member 231. The second filler 250 is made of an incompressible material, and the second filler 250 has the characteristic that it will basically not be compressed inward after being stressed, so as to provide sufficient supporting force for the second brush member 230. The material of the second filler 250 is, for example, a rigid material such as a hard plastic, a hard resin material, or a metal material, and is not listed one by one here. In addition, the second filler 250 can also be a hollow material or structure with the same incompressible characteristic, such as an incompressible keel structure, to reduce the weight of the second roller brush, and is not listed one by one here.

[0099] In some other embodiments, the second filler 250 can be integrally formed with the second shaft rod 240 and formed into an integral structure uniformly by a hard material to reduce the rotational clearance.

[0100] After the installation of the first rotary brush 100 and the second rotary brush 200, when the first rotary brush 100 and the second rotary brush 200 are working, the rotational speeds of the first rotary brush 100 and the second rotary brush 200 are the same and the rotation directions are opposite. For example, the first rotary brush 100 rotates counterclockwise, and the second rotary brush 200 rotates clockwise. During the rotation process, the first brush member and the second brush member are always in an interference contact state at the middle position, that is, before the upper layer of brush members is separated, the lower layer of brush members has already come into contact; continuing to rotate, the upper layer of brush members is separated, and the two end brush members of the lower layer come into contact in the middle to form a diamond-shaped closed air duct. As the brush members rotate, the brush members will collect the garbage towards the middle, so that the garbage is sucked into the dust box inside the device along the air duct 5400, achieving the purpose of cleaning. As the first rotary brush and the second rotary brush rotate synchronously, the diamond-shaped closed air duct formed by the lower layer of brush members will gradually become smaller until the current closed cleaning is completed, and the next closed cleaning will start immediately, that is, the two end brush members of another lower layer come into contact in the middle to form a diamond-shaped closed air duct. In this way, the first rotary brush and the second rotary brush can achieve the effect of continuous cleaning, further improving the cleaning efficiency.

[0101] In some embodiments, a plurality of second bumps 2321 are provided on the surface of the second brush member 232. The plurality of second bumps on the second brush member 232 are evenly distributed along the extending direction of the surface of the second brush member 232. The plurality of second bumps 2321 can increase the friction force between the brush member and the garbage, making the cleaning cleaner.

[0102] In other embodiments, the first brush member in the first rotary brush 100 and the second brush member in the second rotary brush 200 can be different, and can be specifically set according to the cleaning requirements. Optionally, the first rotary brush 100 is a brush, and the second rotary brush 200 is a rubber brush. This combination can meet the cleaning effects of various ground environments, that is, using the good cleaning ability of the brush for hair or soft fibers, the first rotary brush can be used to clean the garbage on soft ground such as carpets; at the same time, using the good cleaning ability of the rubber brush for hard ground, the second rotary brush can be used to clean the ground such as floors and tiles.

[0103] 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. Since the second roller brush has a non-compressible hard core structure, in order to avoid a significant reduction in the passability of large particulate waste due to the non-compressible hard core structure, it is necessary to set the blades of the second roller brush to have a longer length than the blades of the first roller brush. The distance from the outer diameter of the second shaft member (hard core) of the second roller brush to the ground is not less than the distance from the outer diameter of the first filler (soft core) of the first roller brush to the ground. At this time, it is necessary to make the outer diameter of the second shaft member smaller than the outer diameter of the first filler. In addition, when the outer diameter of the second shaft member (hard core) of the second roller brush is too large, the flexible space allowed to pass between the front and rear roller brushes becomes smaller, and slightly larger hard waste will get stuck between the first roller brush and the second roller brush. Additionally, when the outer diameter of the second shaft member (hard core) of the second roller brush is further reduced and the outer contour 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 corresponding length of the second brush member will gradually increase as the outer diameter of the second shaft member (hard core) decreases. If the length of the second brush member exceeds a reasonable range, the cleaning force will be weakened due to the second brush member becoming overhanging, and the surface area of the second brush member is increased, making the second brush member more likely to adhere to dust and affecting the cleaning effect. Therefore, in order to ensure the cleaning effect, the length of the second brush member should not be too long. At this time, the corresponding outer diameter of the second shaft member (hard core) should not be too small, and the outer diameter of the second shaft member can be made larger than the inner diameter of the first filler, so as to ensure that the length of the second brush member is within a suitable range.

[0104] In some embodiments, the plane where the lowest point of the first filler is located is lower than the plane where the lowest point of the second shaft member is located. Since the first filler has compressibility, in order to ensure the passability of waste under the first roller brush and the second roller brush, it is necessary to make the plane where the lowest point of the first filler is located lower than the plane where the lowest point of the second shaft member is located. When the first roller brush is the front roller brush, since the first filler can be compressed, the passability of waste can be ensured. When the second roller brush is the front roller brush, since the lowest point of the second shaft member is higher, the passability of waste can still be ensured. At the same time, since the first roller brush is the rear roller brush and is closer to the ground, it can intercept waste and prevent it from leaking under the first roller brush, improving the cleaning efficiency of the cleaning device.

[0105] In some embodiments, the maximum distance that the first brush member extends away from the outer surface of the first cylindrical member is less than the maximum distance that the second brush member extends away from the outer surface of the second cylindrical member. As described above, since the outer diameter of the first filler is greater than the outer diameter of the second shaft member, if the length of the first brush member is not less than the length of the second brush member, the overall size of the first roller brush will be relatively large. When the assembly positions of the first roller brush and the second roller brush are approximately at the same horizontal level, the interference amount between the first brush member and the ground will be greatly increased, thereby increasing the noise generated by the first brush member hitting the ground and also increasing the resistance during the movement of the automatic cleaning device, making it inconvenient for the automatic cleaning device to perform the cleaning task.

[0106] In some embodiments, the outer contour formed by the maximum distance that the first brush member extends away from the outer surface of the first cylindrical member constitutes the outer diameter of the first roller brush, and the outer contour formed by the maximum distance that the second brush member extends away from the outer surface of the second cylindrical member constitutes the outer diameter of the second roller brush. The outer diameter of the first roller brush is approximately equal to the outer diameter of the second roller brush. When the assembly positions of the first roller brush and the second roller brush are approximately at the same horizontal level or the difference is not significant, it can ensure that both the first roller brush and the second roller brush have sufficient interference with the ground, achieving the cleaning effect of double brushes. In addition, for the automatic cleaning device in the non-working state, the double roller brushes in the storage state can be approximately flatly stored in the cleaning module, which also reduces the design and processing complexity caused by inconsistent designs of the front cleaning brush installation position and the rear cleaning brush installation position.

[0107] In some embodiments, the distance between the axis of the first roller brush and the axis of the second roller brush is not greater than the outer diameter of the first roller brush and / or the second roller brush. For example, the distance between the axis of the first roller brush and the axis of the second roller brush is less than the outer diameter of the first roller brush and / or the second roller brush. When the outer diameters of the first roller brush and / or the second roller brush are approximately equal, and the distance between the axis of the first roller brush and the axis of the second roller brush is greater than the outer diameter of the first roller brush and / or the second roller brush, there will be no interference effect between the first brush member and the second brush member, thus the garbage swept between the first roller brush and the second roller brush cannot be smoothly rolled up, affecting the overall cleaning effect of the cleaning device.

[0108] In some embodiments, the maximum distance that the first brush member extends away from the outer surface of the first cylindrical member forms the outer diameter of the first rotary brush. The maximum distance that the second brush member extends away from the outer surface of the second cylindrical member forms the outer diameter of the second rotary brush. The distance between the axis of the first rotary brush and the axis of the second rotary brush is not greater than half of the sum of the outer diameters of the first rotary brush and the second rotary brush. For example, the distance between the axis of the first rotary brush and the axis of the second rotary brush is less than half of the sum of the outer diameters of the first rotary brush and the second rotary brush. When the outer diameters of the first rotary brush and / or the second rotary brush are not equal, and the distance between the axis of the first rotary brush and the axis of the second rotary brush is greater than half of the sum of the outer diameters of the first rotary brush and the second rotary brush, there will be no interference effect between the first brush member and the second brush member, and thus the garbage swept between the first rotary brush and the second rotary brush cannot be smoothly rolled up, affecting the overall cleaning effect of the cleaning device.

[0109] In some embodiments, the minimum distance from the inner diameter of the first filler to the outer diameter of the second shaft member is greater than the difference between the inner diameter and the outer diameter of the first filler. When the inner diameter of the first filler is too large, or the outer diameter of the second shaft member is too large, resulting in a too small minimum distance from the inner diameter of the first filler to the outer diameter of the second shaft member, the flexible space allowed to pass between the front and rear brushes will become smaller. Larger garbage, or even flexible garbage, will be stuck between the two brushes and cannot 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 filler. At this time, although the first filler still has a space margin that can be compressed, since there is no gap between the first filler and the second shaft member, the first filler and the second shaft member block the suction force of the fan on the garbage, which will greatly reduce the effect of garbage entering and exiting the dust box and reduce the cleaning efficiency.

[0110] In some embodiments, the first rotary brush and the second rotary brush are arranged front and rear along the traveling direction of the automatic cleaning device. At this time, a double-brush assembly structure with a soft front and a hard rear is formed. In order to ensure that the garbage is not left behind, it is necessary to set the plane where the lowest point of the outer contour of the second rotary brush is located lower than the plane where the lowest point of the outer contour of the first rotary brush is located, increasing the interference amount between the second brush member and the ground to prevent the garbage from leaking under the second rotary brush.

[0111] In some embodiments, the second rotary brush and the first rotary brush are arranged front and rear along the traveling direction of the automatic cleaning device. At this time, a double-brush assembly structure with a hard front and a soft rear is formed. In order to ensure that the garbage is not left behind, it is necessary to set the plane where the lowest point of the outer contour of the first rotary brush is located lower than the plane where the lowest point of the outer contour of the second rotary brush is located, increasing the interference amount between the first brush member and the ground to prevent the garbage from leaking under the first rotary brush.

[0112] The automatic cleaning device provided by the embodiment of the present utility model is provided with a double-roller brush structure of a first roller brush and a second roller brush, and the first filler in the first roller brush is set as an elastic member, and the second shaft member in the second roller brush is set as a rigid member, so that the automatic cleaning device can effectively clean the ground based on the two types of soft and hard roller brushes, improve the passability of garbage between the first roller brush and the second roller brush, and reasonably configure the interference amount between the two types of soft and hard roller brushes and the ground, thereby overall improving the cleaning efficiency of the ground.

[0113] The following will be combined with the attached Figures 7-12 The specific structure of the above-mentioned first roller brush (also called soft brush or cleaning brush) will be introduced in detail. The same structure and function have the same technical effects, which will not be elaborated here.

[0114] Figure 7 FIG. is an exploded perspective view of an example of a cleaning brush provided according to the present utility model. Figure 8 For Figure 7 FIG. is a perspective view of an example of an end member of the cleaning brush. Figure 9 For Figure 8 FIG. is a perspective view of another angle of the end member of the cleaning brush.

[0115] Referring to Figures 7-9 FIG., the embodiment of the present utility model provides a cleaning brush 100. The cleaning brush 100 includes: a shaft rod 110, including a shaft rod main body 113 and a first end portion 111 and a second end portion 112 located on both sides of the shaft rod main body 113; a first end member 120 configured to be installed on the first end portion 111, and a first assembly structure 121 is provided on a side of the first end member 120 away from the shaft rod 110. Specifically, the first assembly structure 121 is a transmission structure, and the first assembly structure 121 is connected to a driving mechanism of the cleaning device.

[0116] Specifically, the first end member 120 has at least one first guiding portion 1221, the first end portion 111 has at least one first mating portion 1111, and the at least one first guiding portion 1221 and the at least one first mating portion 1111 are matched to form a guiding and mating structure, so that the first end member 120 can only be installed on the first end portion 111 in a circumferential assembly manner, that is, when the first end member 120 and the shaft rod 110 are assembled, there is a single installation direction.

[0117] The meaning of the circumferential assembly method in this article is as follows. When the two assembled parts rotate 360 degrees relative to each other, if there are N assembly methods, it is determined that the two have N circumferential assembly methods, where N is greater than or equal to 1.

[0118] Such as Figure 8As shown, the first end member 120 includes a first guide sleeve 122 configured to receive the first end portion 111. At least one first introduction portion 1221 is provided on the inner peripheral wall of the first guide sleeve 122, and is a protruding portion protruding inward from the inner peripheral wall of the first guide sleeve 122. The first end member 120 is mounted on the first end portion 111 on the driving side.

[0119] Specifically, the at least first introduction portion 1221 spirally extends circumferentially along the first guide sleeve 122 in a direction away from the first assembly structure 121, specifically in a spiral shape that rotates and extends along the inner peripheral wall in a spiral shape, so that the first introduction portion 1221 has a rotation direction, for example, a clockwise (or counterclockwise) rotation direction around the axis z of the shaft 110.

[0120] It should be noted that in this example, the first introduction portion 1221 is a protruding portion protruding from the inner peripheral wall of the first guide sleeve 122, but it is not limited thereto. As long as one of the first introduction portion 1221 and the first mating portion 1111 is a protruding portion and the other is a recessed portion, it is acceptable.

[0121] In Figure 8 the example, the number of the first introduction portions 1221 is two, and the sizes of the two first introduction portions 1221 are different. By setting the different sizes of the two first introduction portions, it can effectively ensure that the first end member 120 and the end portion on the driving side of the shaft have only a single installation direction, thereby controlling the unique installation direction of components such as the blades of the cleaning brush.

[0122] It should be noted that in this example, the number of the first introduction portions 1221 is two, but it is not limited thereto. In other examples, the number of the first introduction portions 1221 can also be three or more. The above is only described as an optional example and should not be construed as a limitation to the present invention.

[0123] From Figure 9 it can be seen that a first mating portion 1111 corresponding to the first introduction portion 1221 is provided on the outer periphery of the first end portion 111 of the shaft 110. In this example, two first mating portions 1111 are provided on the outer periphery of the first end portion 111, and the two first mating portions 1111 respectively correspond to the two first introduction portions 1221 one by one. The first mating portion 1111 is a groove portion recessed inward from the outer peripheral surface of the first end portion 111. Through the matching of the first introduction portion 1221 and the first mating portion 1111 to form a guiding fit structure, the first end member 120 can only be installed on the first end portion 111 in a single circumferential assembly manner.

[0124] By providing two first guiding portions with different sizes on the inner peripheral wall of the first guide sleeve, the guiding and installation can be carried out more effectively, and the first end member can be installed on the first end only in one circumferential assembly manner, which can improve the simplicity of installing the end member and the stability of the installation structure.

[0125] Optionally, a marking portion 1223 is provided on the outer periphery of the first guide sleeve 122 (see Figure 8 ), which is configured to mark the position of the first guiding portion 1221 on the outer periphery of the first guide sleeve 122, and is used to indicate the rotational assembly direction for installing the first end member 120 on the first end 111 of the shaft rod 110, so that the first guiding portion 1221 and the first mating portion 1111 are aligned for assembly.

[0126] As Figures 8-10 shown, a first locking portion 1222 is provided on the first guide sleeve 122, for example, a groove portion that is recessed inward from the outer peripheral surface of the first guide sleeve 122. Correspondingly, a first locking matching portion 1112 is provided on the first end 111, and the cooperation between the first locking portion 1222 and the first locking matching portion 1112 locks the first end member 120 to the first end 111.

[0127] See Figure 9 and Figure 10 , the first end member 120 further includes a first guiding shaft 123, the first guiding shaft 123 extends along the axis of the first guide sleeve 122, and a first guiding hole 1113 is provided on the end surface of the first end 111 away from the second end 112, the first guiding hole 1113 is coaxial with the shaft rod 110, and is configured to accommodate the first guiding shaft 123.

[0128] As Figure 9 and Figure 10 shown, the end surface of the first assembly structure 121 away from the shaft rod has a regular polygon, and the number of sides of the regular polygon is a divisor of the number of the brush members. In other words, there is a corresponding relationship between the number of sides of the regular polygon on the outer end surface of the first end member and the number of groups of the brush members of the automatic cleaning device. For example, the number of sides N of the regular polygon is a divisor of the number of groups (for example, 4 sides, 8 groups of blades; or 4 sides, 4 groups of blades). Thus, it can be ensured that after the cleaning brush is installed on the main body of the automatic cleaning device in N directions, the orientations of the components such as the blades in the brush members of the cleaning brush are the same.

[0129] It should be noted that in this embodiment, the sides of the regular polygon are N straight edges, but it is not limited thereto. In other embodiments, adjustments can be made, such as curved edges, or a combination of straight edges and curved edges. In addition, in other examples, the shape of the regular polygon will be adaptively changed according to the number of the brush members.

[0130] In Figure 7 In the example of Figure 7 , the cleaning brush 100 further includes a brush member 130 coaxially arranged with the shaft 110. The brush member 130 includes: a cylindrical member 131 sleeved on the outer periphery of the shaft; and a plurality of brush pieces 132. The plurality of brush pieces 132 extend in a direction away from the cylindrical member from the outer surface of the cylindrical member, and the plurality of brush pieces 132 are uniformly arranged along the circumferential direction of the cylindrical member.

[0131] Specifically, the brush piece 131 includes a first brush piece. For example, the first brush piece is V-shaped and includes five groups of first brush pieces.

[0132] It should be noted that in other examples, the brush piece may further include a second brush piece or a third brush piece, etc. The second brush piece and the third brush piece have different shapes, lengths, etc. from the first brush piece. In addition, the structures of different groups of brush pieces are basically the same. Each group of brush pieces may include one or more blades. When including multiple blades, the structures of the multiple blades are often not completely the same.

[0133] Specifically, a flexible filler (not shown in the figure) is filled between the brush member 130 and the shaft 110. The flexible filler covers the outer periphery of the main body of the shaft, exposing the first end and the second end.

[0134] Furthermore, the first end member 120 further includes a first blocking structure 125 provided between the first assembling structure 121 and the first guide sleeve 122, for preventing the winding object from extending excessively away from the brush member and for preventing the winding object from extending excessively away from the cleaning brush. The first blocking structure 125 is, for example, at least one blocking ring. In this example, it is two blocking rings. As Figure 8 shown, the first blocking structure 125 includes a first wall, a recessed portion and a second wall from the outside to the inside along the axial direction of the cleaning brush, wherein the thickness of the first wall is greater than the thickness of the second wall. By providing the blocking structure, winding objects such as garbage are wound around the blocking structure of the first end member, effectively avoiding the winding of the winding object around the shaft, and enabling the winding object to be directly removed following the removal of the end member when the end member is disassembled.

[0135] A guiding fit structure is formed between the first guiding portion in the first guide sleeve of the first end member and the end portion of the shaft on the driving side, and a locking fit structure is formed by the cooperation between the first locking portion on the first guide sleeve and the first locking matching portion of the shaft end. The guiding fit structure and the locking fit structure assist each other in cooperation, enabling a more effective installation structure, and further optimizing the installation structure of the end member and the shaft and thus optimizing the overall structure of the cleaning brush.

[0136] Figure 11 ForFigure 7 Exploded perspective view of the cleaning brush from another angle; Figure 12 is Figure 7 Partial exploded view of the second end member and the shaft rod of the cleaning brush from an angle.

[0137] As Figure 11 and Figure 12 As shown in FIGS. and, the cleaning brush 100 further includes a second end member 140. The second end member 140 is located on the driven side and is mounted on the second end 112 of the shaft rod 110. The second end member 140 has a second fitting structure 141 (specifically, a bearing structure) on the side away from the shaft rod 110. The second fitting structure 141 can rotate relative to the shaft rod and is rotationally connected to other structures (such as the fuselage, etc.) of the cleaning device through the second fitting structure 141.

[0138] As Figure 11 and Figure 12 As shown in FIGS. and, the second end member 140 has at least one second guiding portion 1421, and the second end 112 has at least one second mating portion 1121. The at least one second guiding portion 1421 and the at least one second mating portion 1121 are matched to form a guiding fit structure so that the second end member 140 can be mounted to the second end in a variety of circumferential assembly manners.

[0139] Further, the second guiding portion 1421 spirally extends circumferentially along the second guide sleeve 142 in the direction away from the second fitting structure 141, specifically in a spiral shape that spirally rotates along the inner peripheral wall, so that the second guiding portion 1421 has a rotational direction, for example, a clockwise (or counterclockwise) rotational direction around the axis z of the shaft rod 110, thereby forming a second guiding direction. In this example, the second guiding direction is the same as the first guiding direction.

[0140] It should be noted that in this example, the first guiding direction and the second guiding direction are the same, but this is not limited thereto. In other examples, the rotational direction of the first guiding portion can also be non-spiral or linear. In addition, in other examples, the second guiding direction can also be different from the first guiding direction. The above is only described as an optional example and should not be construed as a limitation to the present invention.

[0141] As Figure 12 As shown in FIG., the at least one second guiding portion 1421 includes two second guiding portions 1421, and the shapes and sizes of the two second guiding portions 1421 are the same, so that the second end member can be mounted to the second end 112 in two circumferential assembly manners.

[0142] Preferably, when the introduction directions of the first introduction part 1221 and the second introduction part 1421 are the same, the sizes of the two first introduction parts 1221 are different (correspondingly, the sizes of the first fitting part 1111 and the second fitting part 1121 are different), the sizes of the two second introduction parts 1421 are the same, and the size of the second introduction part 1421 is between the sizes of the two first introduction parts 1221.

[0143] Since the sizes of the two second guiding parts at the driven end are between the sizes of the two first introduction parts at the driving side, it is possible to ensure the free installation of the second end member at multiple angles, ensure that the end members on both sides are not installed reversely, and effectively ensure the correct orientation of components such as the blade after the cleaning brush is installed.

[0144] It should be noted that, for the number of the second introduction parts, in other examples, it can also be three or more. The above is only described as an optional example and should not be construed as a limitation to the present invention. In addition, for the first end member and the second end member, it is preferable to arrange two first introduction parts with different sizes on the driving side because there is a need for installation angles on the driving side, while the second end member on the driven side does not require a design with different sizes because the second assembly structure (specifically, the bearing structure) on the driven side can rotate freely relative to the shaft rod. When this bearing structure is assembled to the body of the automatic cleaning device, the rest of the cleaning brush is allowed to rotate freely relative to the bearing structure, and there is no strong requirement for assembly angles on the driven side. Therefore, in other examples, the sizes of the second introduction parts can also be the same.

[0145] By forming a guiding and fitting structure with the first introduction part 1221 and the second introduction part 1421 and the first fitting part 1111 and the second fitting part 1121, a more effective guiding and fitting structure can be realized. Through the setting that the sizes of the two first introduction parts 1221 are different and the setting that the size of the second introduction part is different from that of the first introduction part, the first end member can be installed to the first end only in one circumferential assembly manner, and the second end member can be installed to the second end in multiple circumferential assembly manners, which can accurately determine the installation angles of the first end member and the second end member with respect to the shaft rod and realize a more effective installation structure.

[0146] Furthermore, a second locking part 1422 is provided on the outer periphery of the second guide sleeve 142 of the second end member 140, such as a groove part recessed inward from the outer peripheral surface of the second guide sleeve 142. The second locking part 1422 can also be a through hole penetrating the second guide sleeve 142. Correspondingly, a first locking matching part 1123 is provided on the second end 112. The cooperation between the second locking part 1422 and the second locking matching part 1123 locks the second end member 140 to the second end 112 to form a locking and fitting structure.

[0147] As Figure 12 shown, the second end member 140 further includes a second guide shaft 144, the second guide shaft 144 extends along the axis of the second guide sleeve 142, 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.

[0148] Furthermore, the second end member 140 further includes a second blocking structure 145, and the second blocking structure 145 is disposed on a side of the second guide sleeve 142 away from the shaft rod 110.

[0149] Specifically, the outer diameter of the blocking structure 145 is larger than the outer diameter of the second guide sleeve 142. By providing a blocking structure on the second end member, winding objects such as garbage are wound around the blocking structure of the second end member, effectively preventing the winding objects from winding around the shaft rod, and enabling the winding objects to be directly removed along with the disassembly of the end member when the end member is disassembled.

[0150] Optionally, the second guide sleeve 142 may further be provided with a marking portion 1423, configured to mark the position of the second introduction portion 1421 on the outer periphery of the second guide sleeve 142, for indicating the rotational assembly direction of the second end member 140 mounted on the shaft rod 110 and the second end 112, so that the second introduction portion is aligned and assembled with the second mating portion.

[0151] Furthermore, the second assembly structure 141 of the second end member 140 is configured as a polygonal shape corresponding to the number of the brush members. In this example, the polygonal shape of the outer end face of the second assembly structure 141 is a pentagon formed by a combination of straight lines and curves.

[0152] Preferably, the regular polygonal shape of the outer end face of the first end member 120 is different from the polygonal shape of the outer end face of the second assembly structure 141, so that the outer end face shapes of the first end member and the second end member are different, making it easier to distinguish the two ends and improving the convenience of installation.

[0153] By setting the introduction member of the driving end end member of the cleaning brush of the present utility model to have a unique circumferential assembly method, the driving end has a relatively fixed installation direction, which helps to make the installation angle of the roller brush controllable. In some scenarios where there are certain preset requirements for the sub-components of the roller brush, especially the orientation or alignment direction of the blades, this will be particularly beneficial. For example, in those scenarios where two roller brushes of this case are used to form a double-brush system and there are certain alignment requirements for their respective blades.

[0154] The cleaning brush of the present utility model forms a guiding fit structure between the inner wall of the guiding sleeve of the end member and the end of the shaft rod through the guiding portion, and forms a locking fit structure between the locking portion on the outer periphery of the guiding sleeve and the end of the shaft rod. The guiding fit structure and the locking fit structure cooperate with each other, enabling more effective guiding installation, achieving a more effective guiding fit structure, realizing a more effective anti-misassembly structure, improving the installation simplicity and installation structure stability of the end member, optimizing the installation structure between the end member and the shaft rod, and further optimizing the overall structure of the cleaning brush.

[0155] In addition, by setting different sizes for the two first guiding portions and different sizes for the second guiding portion and the first guiding portion, the first end member can only be installed on the first end in one circumferential assembly manner, and the second end member can be installed on the second end in multiple circumferential assembly manners, enabling accurate determination of the installation angles of the first end member and the second end member with the shaft rod and achieving a more effective installation structure.

[0156] In addition, by providing a marking portion on the outer peripheries of the first guiding sleeve and the second guiding sleeve to indicate the rotational assembly direction for installing the first end member and the second end member on the first end and the second end of the shaft rod respectively, it can effectively ensure the alignment and assembly of the first guiding portion with the first mating portion and the alignment and assembly of the second guiding portion with the second mating portion.

[0157] In addition, by the number of sides of the regular polygon on the outer end face of the first end member and the common divisor of the number of brush members of the automatic cleaning device, it can ensure that after the cleaning brush is installed on the main body of the automatic cleaning device in N directions, the orientations of components such as the blades in the brush members of the cleaning brush are consistent.

[0158] In addition, by providing a blocking structure on the end member, the winding can directly wind around the blocking structure of the end member, effectively avoiding the winding of the winding around the shaft rod.

[0159] The following combines the attached Figures 13-21 The specific structure of the above-mentioned second roller brush (also known as the hard brush or cleaning brush) is introduced in detail. The same structures and functions have the same technical effects and will not be elaborated here.

[0160] Figure 13 It is a three-dimensional exploded view of an example of the cleaning brush provided according to the present utility model. Figure 14 It is Figure 13 The schematic cross-sectional structure diagram of the cleaning brush. Figure 15 It is Figure 13 The three-dimensional structure diagram of an example of the end member of the cleaning brush. Figure 16 It is Figure 13 The three-dimensional structure schematic diagram of an example of the mating part of the shaft rod. Figure 17 It is Figure 13Schematic perspective view of an example of the guiding fit structure of the fitting between the end member and the shaft rod. Figure 18 is Figure 17 Exploded view of the structure of the guiding fit structure.

[0161] Referring to Figures 13-18 , the cleaning brush 200 includes a shaft rod 210 having first and second ends 211 and 212 opposite to each other along the axis, at least one of the first end 211 and the second end 212 including a fitting 213; a brush member 230 coaxially sleeved on the outer periphery of the shaft rod 210; and an end member 2200 configured to be fitted and installed with the fitting 213, and the side of the end member 2200 away from the fitting 213 has an assembly structure 221.

[0162] In some embodiments, as Figure 14 shown, at least one of the first end and the second end of the shaft rod has a receiving space, at least a part of the shaft rod is a solid structure, the receiving space includes a first space segment configured to receive at least a part of the guide rod, the receiving space further includes a second space segment, a guiding portion is provided on the guide rod, and the second space segment has a structure matching the shape of the guiding portion of the guide rod to be connected in a matching manner with the guiding portion. The receiving space further includes a third space segment, a guiding shaft is further provided on the end member, and the third space segment is configured to receive at least a part of the guiding 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.

[0163] Specifically, the assembly structure 221 includes, for example, a bearing structure 221” and a transmission structure 221’. When the end member 2200 is an end member on the driving side, that is, when the end member 2200 is the first-side end member 2200’ connected to the driving unit of the cleaning module, the assembly structure 221 is, for example, the transmission structure 221’. When the end member 2200 is an end member on the driven side, that is, when the end member 2200 is the second-side end member 2200” opposite to the first-side end member 2200’, the assembly structure 221 is, for example, the bearing structure 221”.

[0164] The connection and assembly relationship between the end member and the shaft rod will be mainly described below by taking the end member on the driving side as an example, and the connection relationship between the end member on the driven side and the shaft rod is similar.

[0165] As Figure 14As shown, an accommodation space 214 is defined on the end face of the end where the fitting 213 is located and facing the end member 2200. The fitting 213 is accommodated in the accommodation space 214, and a part of the end member 2200 is inserted into the accommodation space 214 for mating installation with the fitting 213.

[0166] Specifically, the end face of the fitting 213 close to the assembly structure 221 is farther from the assembly structure 221 than the opening 2141 of the accommodation space 214. For details, refer to Figure 14 . That is to say, the outer end face of the fitting 213 is closer to the center of the shaft rod than the outer end face of the end to which the fitting 213 belongs. The outer end face of the fitting 213 is closer to the center of the shaft rod than the outer end face on the corresponding side of the brush member.

[0167] Optionally, the end face of the brush member 230 close to the assembly structure 221 is flush with the opening 2141 of the accommodation space 214. For details, refer to Figure 14 . On the one hand, the end of the brush member is effectively supported, and the proper force can be maintained when cleaning the ground. On the other hand, the brush member can effectively protect the core rod and the internal fitting and other installation and mating three-dimensional structures, preventing the reduction of user experience caused by bump damage.

[0168] As Figure 15 shown, the end member 2200 includes a guide rod 222. The guide rod 222 is located on the side of the assembly structure 221 close to the shaft rod 210. The end of the guide rod 222 away from the assembly structure 221 has a guiding portion 2221, and the guiding portion 2221 is configured to form a rotational mating structure with the fitting 213.

[0169] Specifically, the guiding portion 2221 spirally extends circumferentially along the guide rod 222 in the direction away from the assembly structure 221. The guiding portion 2221 is configured to have a spiral shape with a rotational direction, specifically a spiral shape that spirally extends along the outer peripheral surface of the guide rod 222 (i.e., spiral rotational extension), so that the guiding portion 2221 has a rotational direction, such as a clockwise (or counterclockwise) rotational direction around the axis of the shaft rod 210.

[0170] Refer to Figure 14 and Figure 15 . The end member 2200 includes a guide rod 222 and at least one guiding portion 2221. The guiding portion 2221 is provided on the outer peripheral surface of the guide rod 222, and the plurality of guiding portions 2221 are evenly distributed in the circumferential direction of the guide rod 222, so that the guiding portion 2221 forms a rotational mating structure with the fitting 213. For details, refer to Figure 14 and Figure 17 .

[0171] In Figure 15 the example, the guiding portion 2221 is formed by etching a groove on the outer peripheral surface of the guide rod 222 to form a convex portion. The guiding portion 2221 is formed at one end of the guide rod 222 away from the assembling structure 221.

[0172] Specifically, the number of the guiding portions 2221 is multiple. In Figure 15 the example, the number of the guiding portions 2221 is five, and the sizes of these five guiding portions 2221 are the same.

[0173] It should be noted that in other examples, the number of the guiding portions may also be three, four, six or more, and the sizes of the guiding portions may also be different. The above is only illustrated as an optional example and should not be construed as a limitation to the present utility model. In addition, for the forming manner of the guiding portion, the guiding portion may also be a groove etched inward from the outer peripheral surface of the guide rod. The above is only illustrated as an optional example and should not be construed as a limitation to the present utility model. Optionally, at least one of the shape, number and size of the guiding portion 2221 is different.

[0174] Furthermore, the end member 2200 further includes a guiding shaft 223. The guiding shaft 223 extends from the guide rod 222 away from the assembling structure 221, and the end of the guiding shaft 223 away from the guide rod 222 has a buckle 2231. Further, the guide rod 222 is an injection molded part, and the guiding shaft 223 is a metal part.

[0175] In this embodiment, one end of the guiding shaft 223 close to the assembling structure 221 is sleeved inside the guide rod 222.

[0176] Specifically, the guiding shaft 223 includes a buckle 2231 arranged along the outer peripheral surface. The buckle 2231 is, for example, an annular groove, so that the buckle 2231 and the mating part 213 form a buckle cooperation structure.

[0177] As Figure 16 shown, the mating part 213 includes a mating portion 2131 matching the shape of the guiding portion 2221. The mating portion 2131 has a spiral groove for accommodating the guiding portion 2221.

[0178] Specifically, the mating part 213 includes a main body portion 2130. The main body portion 2130 has a cavity. The main body portion 2130 includes a mating portion 2131 arranged inside the cavity. The mating portion 2131 is a spiral groove extending along the inner wall of the cavity. The mating portion 2131 and the guiding portion 2221 form a rotational cooperation structure, so that the guide rod of the end member and the mating part form a rotational cooperation mechanism. For details, see Figure 17 .

[0179] In this example, the number of the engaging portions 2131 is the same as the number of the guiding portions 2221, for example, five.

[0180] It should be noted that for the shape of the engaging portion, in other examples, the engaging portion may also be a groove, while the guiding portion is a convex portion. For the number of the engaging portions, in other examples, it may also be three, four, six or more, as long as the number of the guiding portions is the same as the number of the engaging portions. The above is only described as an optional example and should not be construed as a limitation to the present utility model.

[0181] By providing the guiding portions on the outer peripheral surface of the guide rod, a rotational mating structure is formed between the guide rod of the end member and the mating member of the shaft rod, which can effectively guide the installation, can achieve an effective anti-misassembly structure, can improve the installation simplicity of the end member, and can improve the stability of the installation structure. Through the rotational mating structure formed between the guide rod of the end member and the mating member inside the shaft rod, and in cooperation with the snap-fit structure formed between the guide shaft and the mating member, the guiding installation can be carried out more effectively, an effective anti-misassembly structure can be achieved, the installation simplicity of the end member can be further improved, and the stability of the installation structure can be further improved.

[0182] In Figure 16 the example of, the mating member 213 includes an extension portion 2132 connected to the main body portion 2130 and extending outward from the main body portion 2130. Among them, the extension portion 2132 is closer to the center of the shaft rod 210 than the main body portion 2130, and the outer diameter of the extension portion 2132 is smaller than the outer diameter of the main body portion 2130.

[0183] As Figure 17 and Figure 18 shown, a plurality of convex ribs 21321 are uniformly distributed on the outer peripheral surface of the extension portion 2132, so that the outer peripheral surface of the extension portion 2132 forms an uneven surface for forming a corresponding mating structure with the inside of the shaft rod 210 (i.e., the shape inside the shaft rod), to increase the contact surface between the mating member 213 and the inside of the shaft rod 210, which is more conducive to bonding the mating member 213 in the accommodating space 214 of the shaft rod 210, can increase the bonding strength of the bonding structure between the mating member 213 and the shaft rod 210, and can make the installation more stable.

[0184] It should be noted that the bonding structure between the mating member 213 and the inside of the shaft rod 210 may also be a stepped mating structure, etc. In other embodiments, the whole or at least part of the components of the mating member 213 may also be integrally formed with the shaft rod 210. The above is only described as an optional example and should not be construed as a limitation to the present utility model.

[0185] As Figure 17As shown, one end of the fitting member 213 closer to the center side of the shaft rod is provided with a buckle portion 21322, and the buckle portion 21322 is closer to the center side of the shaft rod than the convex rib 21321. The buckle portion 21322 is, for example, in the shape of a claw portion, and the buckle portion 21322 and the buckle member 2231 (i.e., an annular groove portion or an annular protrusion structure) of the guide shaft 223 of the end member 2200 form a buckle fit structure.

[0186] In Figure 13 the example of, the end member 2200 is provided with a blocking structure 225 for preventing the winding object from extending excessively away from the cleaning brush. The blocking structure 225 is arranged on the side closer to the assembly structure 221 than the guide rod 210 (i.e., the side away from the center side of the shaft rod).

[0187] 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 apart from the first end 211 of the shaft rod 210 by a certain distance. Refer to Figure 17 and Figure 18 .

[0188] In some embodiments, the outer diameter of the blocking structure 225 is larger than the inner diameter and the outer diameter of the accommodating space. The brush member includes a cylindrical member, and the diameter of the cylindrical member is smaller than the diameter of the blocking structure. One end of the brush member close to the shaft rod is within the axial projection range of the blocking structure 225. The first brush member has a first thinning portion, and the first thinning portion is basically within the axial projection range of the blocking structure. The second brush member has a second thinning portion, and the second thinning portion is located inside and outside the axial projection range of the blocking structure.

[0189] By providing a blocking structure on the end member, the winding object is directly wound around the blocking structure of the end member, which can effectively prevent the winding object from winding around the shaft rod.

[0190] In another example, in the cleaning brush 200 as Figure 19 shown, the end member 2200 includes a first side end member 2200' and a second side end member 2200", which are respectively and matingly installed with the fitting members 213 of the first end 211 and the second end 212 of the shaft rod 210. The shaft rod 210 is a rigid member, and the brush member 230 is directly sleeved on the shaft rod 210. The cleaning brush 200 is, for example, a hard brush. Optionally, the shaft rod 210 is a rigid member, and a rigid filler is filled between the brush member 230 and the shaft rod 210.

[0191] In this example, the first side end member 2200' (i.e., Figure 14At least one of the shape, number, and size of the first guiding portion 2221' of the first side end member 2200' and the second guiding portion 2221" of the second side end member 2200" is different.

[0192] In an alternative embodiment, the shape and size of the first guiding portion 2221' of the first side end member 2200' are the same as the shape and size of the second guiding portion 2221" of the second side end member 2200". The number of the first guiding portions 2221' of the first side end member 2200' is greater than the number of the second guiding portions 2221" of the second side end member 2200", and the number of the second guiding portions 2221" of the second side end member 2200" is not a divisor of the number of the first guiding portions 2221' of the first side end member 2200'. For example, the number of the first guiding portions 2221' of the first side end member 2200' is five, and the number of the second guiding portions 2221" of the second side end member 2200" is two.

[0193] As Figure 19 and Figure 20 shown, the first side end member 2200' (i.e., the end member 2200 located on the driving side, Figure 20 the left end shown) is mounted on the first end 211 of the shaft 210. The first side end member 2200' includes a transmission structure 221'. The transmission structure 221' is closer to the outside than the first blocking structure 225'. The end face shape of the transmission structure 221' is a polygonal shape, such as a regular polygon. The transmission mechanism 221' is connected to the driving mechanism of the automatic cleaning device.

[0194] In this example, the brush member 230 includes: a cylindrical member sleeved on the outer periphery of the shaft; and a plurality of brush elements 232 extending from the outer surface of the cylindrical member in a direction away from the cylindrical member 231. The plurality of brush elements 232 are uniformly arranged along the circumferential direction of the cylindrical member.

[0195] It should be noted that in this example, the brush element 232 includes first brush elements of at least one size. For example, it includes five groups of brush elements, and each group of brush elements includes two sizes of first brush elements. For example, the first brush element is in a V shape or a spiral shape. Since the brush member 230 in this example is substantially the same as the brush member 230 in Figure 13 the example, the description of the same parts is omitted.

[0196] Specifically, the number of the first guiding portions 2221' of the first side end member 2200' is a divisor of the number of the brush elements 232. For example, if the number of the first guiding portions 2221' is five, then the number of the brush elements 232 is a multiple of five, such as five groups, ten groups, etc., and each group includes two brush elements or more.

[0197] By setting the number of the first guiding parts 2221' to be a divisor of the number of groups of the brush members 232, when the rotary brush is installed in the rotary brush frame, the brush members 232 can have a specific installation angle, which is beneficial to the interference matching of the corresponding brush members of the two rotary brushes.

[0198] In Figure 19 the example, the number of the first guiding parts 2221' is five, and the number of groups of the brush members 232 is five.

[0199] As Figure 20 shown, the second side end member 2200'' is installed at the second end 212 of the shaft rod 210 (i.e., the end member located on the driven side, Figure 20 the right end shown), and the second side end member 2200'' includes an assembling structure (specifically, a bearing structure 221''), and the bearing structure 221'' is rotatable relative to the shaft rod 210 and is rotationally connected to other structures (such as the fuselage, etc.) of the cleaning device through the bearing structure 221'' relative to the shaft rod.

[0200] Specifically, a first fitting 213' of the first side end member 2200' is installed at the first end 211 inside the shaft rod 210, and a second fitting 213'' of the second side end member 2200'' is installed at the second end 212 inside the shaft rod 210.

[0201] It should be noted that since Figure 18 the shaft rod and the brush member in the example of Figure 13 are substantially the same as those in the example of Figure 19 the shaft rod and the brush member, the description of the same parts is omitted. In addition, since Figure 16 the first fitting 213' in

[0202] In Figure 19 the example, the first side end member 2200' includes a first guide rod 222', at least one first guiding part 2221' and a first guiding shaft 223', wherein, a plurality of first guiding parts 2221' are arranged on the first guide rod 222', and the first guiding part 2221' is formed by etching a groove on the outer peripheral surface of the first guide rod 222' to form a convex part. The first guiding part 2221' is formed at one end of the first guide rod 222' far from the assembling structure 221'.

[0203] As Figure 20 and Figure 21As shown, the second side end member 2200” includes a second guide rod 222”, at least one second guiding portion 2221”, and a second guiding shaft 223”. Among them, a plurality of second guiding portions 2221” are provided on the second guide rod 222”.

[0204] Optionally, when the shape of the first guiding portion 2221’ of the first side end member 2200’ is the same as the shape of the second guiding portion 2221” of the second side end member 2200”, the number of the first guiding portions 2221’ of the first side end member 2200’ is different from the number of the second guiding portions 2221” of the second side end member 2200”.

[0205] Optionally, the number of the first guiding portions 2221’ of the first side end member 2200’ is odd, and the number of the second guiding portions 2221” of the second side end member 2200” is even. Preferably, the number of the first guiding portions 2221’ of the first side end member 2200’ and the number of the second guiding portions 2221” of the second side end member 2200” are not divisors of each other, so as to ensure that the side end member with fewer guiding portions cannot be misassembled onto the fitting corresponding to the side end member with more guiding portions, thereby ensuring that any side end member will not be misassembled and achieving maximum anti-fooling.

[0206] As Figure 20 and Figure 21 As shown, the second end portion 212 of the shaft rod 210 includes a second fitting 213” that matches the second guiding portion 2221” of the second guide rod 222”. The number of the second guiding portions 2221” is two. The second guiding portion 2221” is formed by etching a groove on the outer peripheral surface of the second guide rod 222 to form a convex portion, and is provided at one end of the second guide rod 222 away from the bearing structure 221”.

[0207] Specifically, the second fitting 213” includes an extension portion 2132” that is connected to the main body portion 2130” and extends outward from the main body portion 2130”. The outer diameter of the main body portion 2130” is greater than the outer diameter of the extension portion 2132”. The main body portion 2130” includes a cavity, and the main body portion 2130” includes a fitting portion 2131” provided in its cavity. The fitting portion 2131” is a spiral groove extending along the inner wall of the cavity. The fitting portion 2131” and the second guiding portion 2221” form a rotational fitting structure, so that the guide rod and the fitting of the second side end member form a rotational fitting mechanism.

[0208] As Figure 20 and Figure 21As shown, a plurality of convex ribs 21321” are evenly distributed on the outer peripheral surface of the extension portion 2132” of the second fitting 213”, so that the outer peripheral surface of the extension portion 2132” forms an uneven surface, which is used to form a corresponding fitting structure with the inside of the shaft rod 210 (i.e., the shape inside the shaft rod), so as to increase the contact surface between the second fitting 213” and the inside of the shaft rod 210, which is more conducive to bonding the second fitting 213” in the accommodation space of the shaft rod 210, can increase the bonding strength of the bonding structure between the second fitting 213” and the shaft rod 210, and can make the installation more stable.

[0209] Further, a buckle portion 21322” is provided at one end of the second fitting 213” close to the center side of the shaft rod, and the buckle portion 21322” is closer to the center side of the shaft rod than the convex rib 21321”. The buckle portion 21322” is, for example, in the shape of a claw portion, and the buckle portion 21322” and the buckle member 2231 (i.e., the annular groove portion) of the guide shaft 223 of the second side end member 2200” form a buckle fitting structure.

[0210] In Figure 19 the example of, the first side end member 2200’ includes an assembly structure (specifically, a transmission structure 221’), a first guide shaft 223’, one end of the first guide shaft 223’ is sleeved inside the first guide rod 222’, and the other end of the first guide shaft 223’ is sleeved in the first guide hole of the first end portion 211, and the first guide hole is coaxially opened on the end surface of the first end portion 211.

[0211] And the assembly structure 221” of the second side end member 2200” and the second guide rod 222” are of a split structure. Specifically, one end of the second guide shaft 223” penetrates through the assembly structure (specifically, a bearing structure 221”) of the second side end member 2200”, and the other end of the second guide shaft 223” is sleeved in the second guide hole of the second end portion 212, and the second guide hole is coaxially opened on the end surface of the first end portion 211.

[0212] Optionally, the first side end member 2200’ is provided with a blocking structure 225’, specifically provided between the assembly structure (specifically, the transmission structure 221’) and the first guide rod 222’. The second side end member 2200” is provided with a blocking structure 225”, specifically provided between the assembly structure (specifically, the bearing structure 221”) and the second guide rod 222”. The blocking structures of both side end members are used to prevent the winding object from extending too far away from the brush member 230.

[0213] In this example, the outer end face of the first side end member 2200' is configured in the shape of a first polygon corresponding to the number of the brush members 232. Specifically, the end face of the transmission structure 221' of the first side end member 2200' 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 the first guiding portions 2221' of the first side end member 2200'. At the same time, the number of the first guiding portions 2221' of the first side end member 2200' is a divisor of the number of the brush members 232.

[0214] With such a setting, when the rotary brush is installed on the rotary brush frame, the brush members 232 can have a specific installation angle. When there are multiple rotary brushes with similar structures, this design will be very beneficial for forming a mating relationship of the blades with each other among the multiple rotary brushes. Especially in cases where the blades of two rotary brushes need to be aligned, etc., it can ensure that the blades are aligned to achieve synchronous operation, interference, or staggered arrangement in a certain posture, etc., so as to achieve different cleaning effect requirements.

[0215] Compared with the prior art, the cleaning brush of the present utility model forms a rotational mating structure through the cooperation between the guiding portion of the guide rod of the end member and the fitting inside the shaft rod, and cooperates with the snap-fit structure formed by the guiding shaft and the fitting, which can perform more effective guiding installation, can achieve a more effective anti-misassembly structure, can further improve the installation simplicity of the end member, and can further improve the stability of the installation structure.

[0216] In addition, by providing a blocking structure on the end member, so that the winding directly winds around the blocking structure of the end member, it can effectively prevent the winding from winding around the shaft rod.

[0217] In the related art, for an automatic cleaning device, such as a floor sweeping robot, etc., when performing the dust collection operation, because a large amount of garbage needs to be discharged in a short time, slightly larger particles of garbage are easily stuck between the two rotary brushes, resulting in dust collection failure, and the user needs to clean manually frequently, which affects the user experience. Therefore, how to avoid garbage jamming during the dust collection operation without affecting the performance of the rotary brush during the cleaning operation has become an urgent technical problem to be solved.

[0218] The present utility model provides a roller brush and an automatic cleaning device. The roller brush includes: a shaft rod; and a brush member detachably mounted on the shaft rod. The brush member includes: a cylindrical member configured to be sleeved on the shaft rod such that the cylindrical member and the shaft rod are coaxial; and a first brush member extending away from the outer surface of the cylindrical member. The first brush member is inclined in a first rotation direction in the circumferential direction of the cylindrical member. Wherein, a one-way blocking structure is provided at an end of the first brush member close to the cylindrical member, such that the first brush member is liable to deform in the reverse direction of the first rotation direction and not liable to deform in the first rotation direction. For the roller brush and the automatic cleaning device provided by the present utility model, a one-way blocking structure is provided at an end of the first brush member close to the cylindrical member, which can make the first brush member liable to deform in the reverse direction of the first rotation direction and not liable to deform in the first rotation direction. Thus, during normal cleaning of the automatic cleaning device, the first brush member can provide a strong cleaning effect and is not liable to fall and deform along the first rotation direction. While during dust collection, the first brush member is liable to deform along the reverse direction of the first rotation direction, preventing large-particle garbage from being clamped during dust collection, thereby improving the cleaning efficiency and obtaining a better user experience.

[0219] The optional embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0220] The roller brush provided by the embodiment of the present utility model can be applied to various automatic cleaning devices. As an example, Figure 1 an exemplary structural schematic diagram of an automatic cleaning device is shown, but the devices to which the roller brush provided by this embodiment can be applied should not be limited thereto.

[0221] Reference Figure 22 and Figure 23 , Figure 22 are structural schematic diagrams of the roller brush provided by some embodiments of the present utility model, Figure 23 and Figure 22 is a cross-sectional structural schematic diagram of the roller brush in . As shown in the figure, in some embodiments, the roller brush 100 includes a shaft rod 10 and a brush member 20, wherein the brush member 20 is provided on the shaft rod 10.

[0222] The shaft rod 10 can be a rod-shaped structure, such as a long cylindrical structure. Both ends of the rod-shaped structure can be detachably mounted directly or through a connecting member to the bottom of the device body of the automatic cleaning device. In some embodiments, the shaft rod 10 together with the brush member 20 provided on the shaft rod 10 is detachably mounted in a long groove structure at the bottom of the device body, and the long groove structure extends along the transverse axis Y direction.

[0223] The axis of the shaft rod 10 can be regarded as the rotation axis of the rolling brush 100. After the rolling brush 100 is installed on the device main body of the automatic cleaning device, the drive system located on the device main body can drive the shaft rod 10 to rotate, and the rotation direction can be clockwise or counterclockwise. When the shaft rod 10 rotates, it can drive other components arranged on the shaft rod 10, such as the brush member 20, to rotate together to achieve the purpose of cleaning.

[0224] The brush member 20 is arranged on the shaft rod 10. Specifically, in some embodiments, the brush member 20 is detachably arranged on the shaft rod 10 to facilitate the daily cleaning and maintenance of the brush member 20.

[0225] The brush member 20 may further include: a cylindrical member 23 and at least one first brush member 21.

[0226] The cylindrical member 23 is configured to be sleeved on the shaft rod 10 so that the cylindrical member 23 and the shaft rod 10 are coaxial. The cylindrical member 23 may be a long cylindrical structure, and the length of the cylindrical member 23 is basically the same as the length of the shaft rod 10. The cylindrical member 23 is tightly sleeved on the shaft rod 10, and the inner diameter of the cylindrical member 23 is basically equal to or slightly smaller than the diameter of the shaft rod 10 so that there is no relative movement between the shaft rod 10 and the cylindrical member 23 during the rotation process. The cylindrical member 23 may be a flexible member or a rigid member.

[0227] 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 inclined in the circumferential direction of the cylindrical member 23 along a first rotation direction. Figure 24 The included angle α between the first brush member 21 and the tangential direction of the cylindrical member 23 is shown, where α is less than 90°. For example, in some embodiments, the value range of α is 45° to 85°. By setting the first brush member 21 to be inclined in the circumferential direction of the cylindrical member 23 along the first rotation direction, a certain included angle can be formed between the first brush member 21 and the cleaning surface (such as the ground), so that it is easier to take away the garbage on the cleaning surface during the cleaning process and improve the cleaning ability.

[0228] In some embodiments, the rolling brush 100 further includes end caps 30, which are arranged at both ends of the shaft rod 10. The rolling brush 100 is installed in the long groove structure at the bottom of the main body of the automatic cleaning device through the installation components on the side of the end caps 30 away from the shaft rod 10.

[0229] 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 extending direction of the first brush member 21 forms a certain angle with the axis of the shaft 10. For example, the first brush member 21 can be spirally arranged on the outer surface of the cylindrical member 23, so that the first brush member 21 has more contact sites with the cleaning surface, can achieve more sufficient contact between the first brush member 21 and the cleaning surface, is convenient for taking away the garbage on the cleaning surface, and improves the cleaning ability.

[0230] In some embodiments, a one-way blocking structure is provided at the end of the first brush member 21 close to the cylindrical member 23. The one-way blocking structure can make the first brush member 21 easily deform in the reverse direction of the first rotation direction and not easily deform in the first rotation direction, that is, make the deformation of the first brush member 21 when rotating in the first rotation direction less than the deformation when rotating in the reverse direction of the first rotation direction. Usually, the first rotation direction is the rotation direction of the brush member when the cleaning device performs the cleaning operation, and the reverse direction of the first rotation direction is the rotation direction of the brush member when the cleaning device performs the dust collection operation. By providing the one-way blocking structure, when the cleaning device is cleaning normally, the first brush member 21 can provide a strong cleaning effect and is not easily tilted and deformed along the first rotation direction; while during dust collection, the first brush member 21 is easily deformed along the reverse direction of the first rotation direction, preventing large-particle garbage from being clamped during dust collection.

[0231] Reference Figure 24 , in some embodiments, the one-way blocking structure includes: a support member 2111, and the support member 2111 can block the first brush member 21 from deforming in the first rotation direction. Specifically, the support member 2111 is arranged on the first rotation direction side of the end of the first brush member 21 close to the cylindrical member 23.

[0232] Such as Figure 24 As shown, in some embodiments, the first brush member 21 has a first end and a second end. The first end is used to contact the surface to be cleaned when the automatic cleaning device works, and the thickness of the second end is less than the thickness of the first end. For example, the second end has a first thinning portion relative to the first end, and the arrangement direction of the first thinning portion at the second end is basically the same as the inclination direction of the first brush member relative to the radial direction of the first roller brush.

[0233] In some embodiments, reference Figure 24It is understood that 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 working. The thickness of the second end of the second brush member is less 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 thinning portion relative to the first end of the second brush member. The arrangement direction of the second thinning portion at the second end of the second brush member is substantially opposite to the inclination direction of the second brush member relative to the radial direction of the first roller brush.

[0234] In some embodiments, the arrangement direction of the second thinning portion at the second end of the second brush member is opposite to the arrangement direction of the first thinning portion at the second end of the first brush member.

[0235] In some embodiments, the thickness of the first brush member 21 near the end of the cylindrical member 23 is less than a preset threshold, so that the first brush member 21 has a tendency to deform in both the first rotation direction and the reverse direction of the first rotation direction. Specifically, in some embodiments, there is a slit 216 between the support member 2111 and the end of the first brush member 21 near the cylindrical member 23, so that the thickness of the end of the first brush member 21 near the cylindrical member 23 is less than the preset threshold. When the first brush member 21 has a tendency to deform in the first rotation direction, the support member 2111 supports the end of the first brush member near the cylindrical member, and at this time the gap width of the slit 216 becomes smaller; when the first brush member 21 has a tendency to deform in the reverse direction of the first rotation direction, the end of the first brush member 21 near the cylindrical member 23 moves away from the support member 2111, and at this time the gap width of the slit 216 becomes larger. By providing the slit 216, there is a certain gap between the first brush member 21 and the support member 2111, so that the first brush member 21 can also have a certain degree of freedom in the first rotation direction and can deform appropriately to adapt to different cleaning surfaces. In actual cleaning operations, the gap width of the slit 216 can be adjusted according to the cleaning surface, so as to change the deformation degree of the first brush member 21 in the first rotation direction to a certain extent to adapt to different cleaning surfaces.

[0236] In some embodiments, the first brush member 21 has an end portion close to the cylindrical member 23, and the support member 2111 has an inclined surface facing this end portion. Further, the inclination angle β of the inclined surface with respect to the circumferential section plane of the cylindrical member 23 is smaller than the inclination angle α of the first brush member 21 with respect to the circumferential section plane of the cylindrical member 23. The specific angles of both can be adjusted according to the actual situation, so that the first brush member 21 also has a certain degree of freedom in the first rotation direction and can undergo appropriate deformation to adapt to different cleaning surfaces. During actual cleaning operations, the inclination angle α and the inclination angle β can be adjusted according to the cleaning surface, thereby changing to a certain extent the deformation degree of the first brush member 21 in the first rotation direction to adapt to different cleaning surfaces.

[0237] The support member 2111 extends along the end portion of the first brush member 21 close to the cylindrical member 23. In some embodiments, the support member 2111 is a continuous structure, that is, the support member 2111 continuously extends along the end portion of the first brush member 21 close to the cylindrical member 23, and extends from one end of the cylindrical member 23 to the other end of the cylindrical member 23. It can be understood that in some other embodiments, referring to Figure 25 , the support member 2111 is a discontinuous structure, that is, the support member 2111 is discretely arranged at the end portion close to the cylindrical member 23. When the support member 2111 is a discontinuous structure, materials can be saved, the overall weight of the first brush member 21 can be reduced, and moreover, the discontinuous support member 2111 can also reduce the remaining garbage caused by the gap between the first brush member 21 and the support member 2111.

[0238] Referring to Figure 26 , in some embodiments, the one-way blocking structure includes a slit. For example, a slit 215 is provided at the end portion of the first brush member 21 close to the cylindrical member 23 on the first rotation direction side. When the first brush member 21 has a tendency to deform in the first rotation direction, the slit 215 closes to prevent the first brush member 21 from deforming in the first rotation direction; when the first brush member 21 has a tendency to deform in the reverse direction of the first rotation direction, the slit 215 expands so that the first brush member 21 deforms in the reverse direction of the first rotation direction. By providing the slit 215 on the first brush member 21, the deformation parameters of the first brush member 21 in the reverse direction of the first rotation direction can be changed, so that the first brush member 21 is easy to deform in the reverse direction of the first rotation direction and not easy to deform in the first rotation direction. And the process of providing the slit 215 on the first brush member 21 is simple and convenient for popularization and application.

[0239] Further, the inclination angle of the slit 215 relative to the circumferential section of the cylindrical member 23 is smaller than the inclination angle of the first brush member 21 relative to the circumferential section of the cylindrical member 23. By setting different inclination angles, the first brush member 21 can have a certain degree of freedom in the first rotation direction and can undergo appropriate deformation to adapt to different cleaning surfaces. During actual cleaning operations, the inclination angle α and the inclination angle of the slit 215 relative to the circumferential section of the cylindrical member 23 can be adjusted according to the cleaning surface, thereby changing to a certain extent the deformation degree of the first brush member 21 in the first rotation direction to adapt to different cleaning surfaces.

[0240] In some embodiments, convex points 213 are provided on the surface of the first brush member 21. In some embodiments, there can be multiple convex points 213, and the multiple convex points 213 are arranged along the extending direction of the first brush member 21, and the positions of the convex points 213 are away from the cylindrical member 23 and close to the cleaning surface. By providing the convex points 213, the contact area between the first brush member 21 and the garbage can be increased, the ability of the first brush member 21 to carry away the garbage from the cleaning surface can be improved, and the cleaning effect of the first brush member 21 can be enhanced.

[0241] It can be understood that the number of the first brush members 21 can be multiple, and the multiple first brush members 21 are evenly distributed in the circumferential direction of the cylindrical member 23. When performing a cleaning operation, the multiple first brush members 21 can work together to increase the contact area between the brush members and the cleaning surface and improve the cleaning efficiency.

[0242] 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 inclined in the first rotation direction in the circumferential direction of the cylindrical member 23, and the value range of the inclination angle can be 45° to 85°. By setting the second brush member 22 to be inclined in the first rotation direction in the circumferential direction of the cylindrical member 23, a certain included angle can be formed between the second brush member 22 and the cleaning surface, so that it is easier to carry away the garbage on the cleaning surface during the cleaning process and the cleaning ability can be improved.

[0243] 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 extending direction of the second brush member 22 forms a certain included angle with the axis of the shaft rod 10. For example, the second brush member 22 can be spirally arranged on the outer surface of the cylindrical member 23, so that the second brush member 22 has more contact sites with the cleaning surface, can achieve more sufficient contact between the second brush member 22 and the cleaning surface, is convenient for carrying away the garbage on the cleaning surface, and improves the cleaning ability.

[0244] It can be understood that the number of the second brush members 22 can be multiple, and the multiple second brush members 22 are evenly distributed in the circumferential direction of the cylindrical member 23. Further, the first brush member 21 and the second brush members 22 are alternately and evenly arranged in the circumferential direction of the cylindrical member 23. For example, the brush member 20 of the rotary brush 100 includes 10 brush members, among which 5 are the first brush members 21 and 5 are the second brush members 22, and the first brush members 21 and the second brush members 22 are alternately and evenly arranged in the circumferential direction of the cylindrical member 23.

[0245] In some embodiments, the extension length of the second brush member 22 away from the cylindrical member 23 is greater than that of the first brush member 21 away from the cylindrical member 23, and the thickness of the brush member body of the second brush member 22 is less than that of the first brush member 21. That is to say, relatively speaking, the first brush member 21 is short and thick, and the second brush member 22 is long and thin. When the first brush member 21 processes slightly larger garbage such as fruit shells and particulate matter, it can provide strong cleaning force, while when dealing with flat and hard cleaning surfaces such as ceramic tiles and wooden floors, the first brush member 21 does not contact the cleaning surface; when the second brush member 22 processes flat and hard cleaning surfaces such as ceramic tiles and wooden floors, it can contact the ground, slap and roll up the garbage such as dust and hair that needs to be cleaned, and then suck it into the dust box. The contact force between the second brush member 22 and the ground is small, and the daily cleaning is low-noise; when cleaning a carpet with a certain thickness, both the first brush member 21 and the second brush member 22 contact the carpet surface, and at this time, the relatively thick first brush member 21 plays a key role in slapping and peeling the dust and hair hidden in the carpet to improve the cleaning effect.

[0246] In some embodiments, the thickness of the end of the second brush member 22 away from the cylindrical member 23 is greater than that of the end of the second brush member 22 close to the cylindrical member 23. Thereby, the second brush member 22 can have better deformation parameters at the end close to the cylindrical member 23, so that the second brush member 22 can undergo corresponding deformation according to different cleaning operations.

[0247] In some embodiments, after the cylindrical member 23 is sleeved on the shaft rod 10, the cylindrical member 23 is incompressible. That is to say, the rotary brush 100 is a hard brush structure. The shaft rod 10 is, for example, a rigid rod. After the cylindrical member 23 is sleeved on the rigid shaft rod 10, the cylindrical member 23 is incompressible. That is to say, at least part of the surface of the shaft rod supporting the brush member is incompressible. For example, the entire surface of the shaft rod supporting the brush member is incompressible.

[0248] In some embodiments, the automatic cleaning device includes a first roller brush and a second roller brush. The first shaft member has a support surface that contact-supports the first brush member, and at least a part of the support surface of the first shaft member is incompressible. For example, the entire support surface of the first shaft member is incompressible.

[0249] In some embodiments, the second roller brush includes a second shaft member and a second brush member. The second shaft member has a support surface that contact-supports the second brush member, and at least a part of the support surface of the second shaft member is incompressible. For example, the entire support surface of the second shaft member is incompressible.

[0250] In some embodiments, the support surface at the axial end of the first shaft member is compressible, and the remaining part is incompressible.

[0251] In some embodiments, the support surface at the axial end of the second shaft member is compressible, and the remaining part is incompressible.

[0252] In some embodiments, the support surface at the axial middle position of the first shaft member is compressible, and the remaining part is incompressible.

[0253] In some embodiments, the support surface at the axial middle position of the second shaft member is compressible, and the remaining part is incompressible.

[0254] In some embodiments, the area of the compressible part of the support surface of the first shaft member is smaller than that of the incompressible part.

[0255] In some embodiments, the area of the compressible part of the support surface of the second shaft member is smaller than that of the incompressible part.

[0256] In some embodiments, on the support surface within at least a part of the axial length of the first shaft member, there are simultaneously compressible parts and incompressible parts in the circumferential direction.

[0257] In some embodiments, on the support surface within at least a part of the axial length of the second shaft member, there are simultaneously compressible parts and incompressible parts in the circumferential direction.

[0258] In some embodiments, the length of the support surface of the first shaft member in the axial direction of the first shaft member is smaller than that of the first brush member.

[0259] In some embodiments, the length of the support surface of the second shaft member in the axial direction of the second shaft member is less than that of the second brush member. In some embodiments, the automatic cleaning device has two rolling brushes at the same time. The cylindrical member of one rolling brush is compressible, and the cylindrical member of the other rolling brush is non-compressible. The one-way blocking structure can be set on at least one of the two rolling brushes as needed; in some embodiments, this structure can be set only for the rolling brush with a non-compressible cylindrical member, because the demand for solving the corresponding problems of the compressible rolling brush is slightly weaker. Of course, according to the specific material of the compressible rolling brush, especially when the material is relatively hard or the compressible performance is relatively weak, it can also be selected to use this blocking structure for it.

[0260] For the rolling brush and the automatic cleaning device provided by the present utility model, a one-way blocking structure is provided at the end of the first brush member close to the cylindrical member, which can make the first brush member easily deform in the reverse direction of the first rotation direction and not easily deform in the first rotation direction. Therefore, when the automatic cleaning device is cleaning normally, the first brush member can provide a strong cleaning effect and is not easily tilted and deformed along the first rotation direction. When collecting dust, the first brush member easily deforms in the reverse direction of the first rotation direction, preventing large-particle garbage from being clamped during dust collection, thereby improving the cleaning efficiency and obtaining a better user experience.

[0261] In the related art, for automatic cleaning devices, such as floor sweeping robots, there is a double-rolling-brush model. For this double-rolling-brush model, the front and rear rolling brushes can enhance the cleaning ability of the automatic cleaning device. However, the blades of the front and rear rolling brushes do not interfere with each other, and there is always a predetermined size gap between the two rolling brushes to suck the garbage on the operation surface into the air duct. The dust suction effect of the automatic cleaning device needs to be further improved.

[0262] The present utility model provides an automatic cleaning device, including: 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 rolling brush arranged in a first direction perpendicular to the axis of the moving platform, the first rolling brush including a first long brush member; a second rolling brush arranged side by side with the first rolling brush, the second rolling brush including a second long brush member; and an air duct arranged on the side of the first rolling brush and the second rolling brush away from the operation surface and configured to guide the dust to be received. Wherein, when the automatic cleaning device performs a cleaning operation, the first long brush member and the second long brush member interfere with each other to form an interference area, and the interference area is configured to move dynamically in a predetermined direction. The air duct inlet of the air duct is arranged downstream in the predetermined direction.

[0263] When the automatic cleaning device performs a cleaning operation, the first long brush member of the first rolling brush and the second long brush member of the second rolling brush of the cleaning module interfere with each other to form an interference area, so that the air intake passage between the two rolling brushes is at least partially blocked, reducing the opening size of the air intake channel and increasing the dust suction pressure, achieving a better dust suction effect. And the interference area is configured to move dynamically along a predetermined direction, so that the area with the maximum suction force in the air intake passage between the two rolling brushes also moves dynamically along the predetermined direction, and the dust at all positions of the operation surface swept by the rolling brushes has the opportunity to be sucked into the air duct and then into the dust box in turn with a greater suction force. The air duct inlet of the air duct is arranged downstream in the predetermined direction, facilitating the dust to enter the dust box through the air duct.

[0264] The optional embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0265] Figure 27 It is a schematic structural diagram of another perspective of the cleaning module provided by some embodiments of the present invention. Figure 28 It is a schematic cross-sectional structure diagram of the cleaning module provided by some embodiments of the present invention. Figure 29 It is a schematic structural diagram of the first rolling brush and the second rolling brush provided by some embodiments of the present invention. Some embodiments of the present invention provide an automatic cleaning device, and the automatic cleaning device includes a mobile platform 1000 and a cleaning module 5000. The mobile platform 1000 is configured to automatically move on the operation surface; the cleaning module 5000 is assembled on the mobile platform 1000 and is configured to perform a cleaning operation on the operation surface.

[0266] As Figures 27-29 shown, the cleaning module 5000 includes a first rolling brush 100, a second rolling brush 200, and an air duct 5400. The first rolling brush 100 and the second rolling brush 200 constitute the aforementioned rolling brush 5300.

[0267] The first rolling brush 100, for example, is a front brush, and is arranged along a first direction perpendicular to the axis of the mobile platform. The axis of the mobile platform is, for example, the front-back axis X, and the first direction is, for example, the direction in which the transverse axis Y extends. The first rolling brush 100 includes a first long brush member 131, that is, a first long blade. The long blade is relatively long and thin. When dealing with flat and hard cleaning surfaces such as ceramic tiles and wooden floors, the long blade can contact the ground, pat and roll up the garbage such as dust and hair that needs to be cleaned, and then suck it into the dust box. The contact force between the long blade and the ground is small, and the daily cleaning has low noise.

[0268] The second rolling brush 200, for example, is a rear brush, is arranged side by side with the first rolling brush 100, and is also arranged along the first direction perpendicular to the axis of the mobile platform. The second rolling brush 200 includes a second long brush member 231, that is, a second long blade.

[0269] The air duct 5400 is arranged on the side of the first rolling brush 100 and the second rolling brush 200 away from the operation surface, and is configured to guide the dust to be contained, for example, guide the dust to be contained in the dust box.

[0270] When the automatic cleaning device performs a cleaning operation, the first rolling brush 100 and the second rolling brush 200 rotate towards each other to perform a cleaning operation. Specifically, the first rolling brush 100 rotates along a first rotation direction R1, and the first rotation direction R1 is, for example, counterclockwise, and the second rolling brush 200 rotates along a second rotation direction R2, and the second rotation direction R2 is, for example, clockwise. The first long brush member 131 of the first rolling brush 100 and the second long brush member 231 of the second rolling brush 200 can contact the ground, and pat and roll up the garbage such as dust and hair that needs to be cleaned.

[0271] When the automatic cleaning device performs a cleaning operation, the first long brush member 131 of the first rolling brush 100 and the second long brush member 231 of the second rolling brush 200 interfere with each other to form an interference area. For example, at least part of the outer contour formed by the trajectory of the outer end of the first brush member and the outer contour formed by the trajectory of the outer end of the second brush member interfere with each other. In some embodiments, when the first rolling brush and the second rolling brush rotate, there is no contact between the first brush member and the second brush member or there is mutual leaning between the first brush member and the second brush member. Specifically, as Figure 28 and Figure 29 shown, the first long brush member 131 and the second long brush member 231 interfere with each other between the first rolling brush 100 and the second rolling brush 200 to form an interference area. So that the air intake passage between the two rolling brushes is at least partially closed, the opening size of the air intake passage is reduced, the dust suction pressure is increased, and a better dust suction effect is achieved.

[0272] When the first brush member and the second brush member rotate to a position close to each other with the first rolling brush and the second rolling brush, the adjacent points of the first brush member and the second brush member move dynamically along a predetermined direction as the two rolling brushes rotate. The interference area is configured to move dynamically along a predetermined direction, for example, move dynamically along the extending direction of the first rolling brush 100 and the second rolling brush 200, so that the dust at all positions of the operation surface cleaned by the rolling brushes has the opportunity to be sucked into the air duct in sequence with a greater suction force and then enter the dust box. The air duct inlet 5410 of the air duct 5400 is arranged downstream of the predetermined direction, facilitating the dust to enter the dust box through the air duct.

[0273] In some embodiments, as Figures 27-29As shown, the first rotary brush 100 includes a first shaft 110 and a first brush member 130. The first shaft 110 can be a rod-shaped structure, such as a long cylindrical structure. Both ends of this rod-shaped structure can be detachably mounted to the bottom of the device body of the automatic cleaning device directly or through a connecting member. In some embodiments, the first shaft 110 together with the first brush member 130 provided on the first shaft 110 is detachably mounted in a long groove structure at the bottom of the device body, and this long groove structure extends along the transverse axis Y direction.

[0274] The axis of the first shaft 110 can be regarded as the rotation axis of the first rotary brush 100. When the first rotary brush 100 is mounted to the device body of the automatic cleaning device, a drive system on the device body can drive the first shaft 110 to rotate, and the rotation direction can be clockwise or counterclockwise. When the first shaft 110 rotates, it can drive other components provided on the first shaft 100, such as the first brush member 130, to rotate together to achieve the purpose of cleaning.

[0275] The first brush member 130 is detachably mounted on the first shaft 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 131.

[0276] The first cylindrical member 133 is configured to be sleeved on the first shaft 110 so that the first cylindrical member 130 and the first shaft 110 are coaxial. The first cylindrical member 130 can be a long cylindrical structure, and the length of the first cylindrical member 130 is substantially the same as the length of the first shaft 110. The first cylindrical member 130 is tightly sleeved on the first shaft 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 110, so that there is no relative movement between the first shaft 110 and the first cylindrical member 130 during rotation. The first cylindrical member 130 can be a flexible member, for example.

[0277] The first long brush 131, that is, the 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 131 and the first cylindrical member 130 are an integral structure, for example, integrally formed of the same material.

[0278] The second rotary brush 200 includes a second shaft 210 and a second brush member 230. The second shaft 210 may be a rod-shaped structure, such as a long cylindrical structure. Both ends of the rod-shaped structure can be detachably mounted directly or through a connecting member to the bottom of the device body of the automatic cleaning device. In some embodiments, the second shaft 210 together with the second brush member 230 provided on the second shaft 210 is detachably mounted in a long groove structure at the bottom of the device body, and the long groove structure extends along the transverse axis Y direction.

[0279] The axis of the second shaft 210 can be regarded as the rotation axis of the second rotary brush 200. When the second rotary brush 200 is mounted to the device body of the automatic cleaning device, a drive system on the device body can drive the second shaft 210 to rotate, and the rotation direction can be clockwise or counterclockwise. When the second shaft 210 rotates, it can drive other components provided on the second shaft 210, such as the second brush member 230, to rotate together to achieve the purpose of cleaning.

[0280] The second brush member 230 is detachably mounted on the second shaft 210, which facilitates the replacement of the second brush member 230 as a consumable. The second brush member 230 includes a second cylindrical member 233 and a second long brush member 231.

[0281] The second cylindrical member 233 is configured to be sleeved on the second shaft 210 so that the second cylindrical member 230 is coaxial with the second shaft 210. The second cylindrical member 230 may be a long cylindrical structure, and the length of the second cylindrical member 230 is substantially the same as the length of the second shaft 210. The second cylindrical member 230 is tightly sleeved on the second shaft 210, and the inner diameter of the second cylindrical member 230 is substantially equal to or slightly smaller than the diameter of the second shaft 210 so that there is no relative movement between the second shaft 210 and the second cylindrical member 230 during rotation. The second cylindrical member 230 may be a flexible member, for example.

[0282] The second long brush member 231, that is, the 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 an integral structure, for example, integrally formed of the same material.

[0283] In some embodiments, as Figures 27-29 shown, the number of the first long brush members 131 and the second long brush members 231 is plural, and the plurality of first long brush members 131 and the plurality of second long brush members 231 correspond to each other one by one, and any one of the plurality of first long brush members 131 is configured to interfere with its corresponding second long brush member 231. Specifically, as Figure 28 andFigure 29 As shown, the first rotatable brush 100 has five first long brush members 131, and the second rotatable brush 200 has five second long brush members 231. Each first long brush member 131 and its corresponding second long brush member 231 rotate to positions close to each other as the first rotatable brush 100 and the second rotatable brush 200 rotate. For example, when located between the first rotatable brush 100 and the second rotatable brush 200, the two interfere with each other. The first long brush member 131 and its corresponding second long brush member 231 start to interfere, for example, from one end. As the first rotatable brush 100 and the second rotatable brush 200 further rotate, the interference area between the two moves from one end to the other end. As the first rotatable brush 100 and the second rotatable brush 200 further rotate, the two disengage from the interference, and so on in a cycle.

[0284] In some embodiments, such as Figures 27-29 , when the automatic cleaning device performs a cleaning operation, at any moment, 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 a situation where two pairs of first long brush members 131 and second long brush members 231 interfere with each other simultaneously. At D1, a pair of first long brush members 131 and second long brush members 231 are in an interfering state at one end, and at D2, another pair of first long brush members 131 and second long brush members 231 are in an interfering state at the other end. Such a setting can appropriately increase the area of the interference region, further reduce the opening size of the air intake channel, increase the dust suction pressure, and achieve a better dust suction effect.

[0285] In some embodiments, such as Figures 27-29 shown, the multiple first long brush members 131 are evenly distributed in the circumferential direction of the first cylindrical member 133. The multiple second long brush members 231 are evenly distributed in the circumferential direction of the second cylindrical member 233. For example, the number of the multiple first long brush members 131 is 5, and in the circumferential direction of the first cylindrical member 133, a first long brush member 131 is provided every 72 degrees. For example, the number of the multiple second long brush members 231 is 5, and in the circumferential direction of the second cylindrical member 233, a second long brush member 131 is provided every 72 degrees.

[0286] In some embodiments, the first long brush member 131 extends from one end of the first cylindrical member 133 to the other end. It does not extend along the axis of the first cylindrical member 133, but is arranged in a meandering manner on the outer circumferential surface of the first cylindrical member 133, for example, in a spiral arrangement. Each first long brush member 131 covers a first predetermined angle in the circumferential direction of the first cylindrical member 133, and the first predetermined angle is greater than or equal to 360° / N, where N is the number of the first long brush members, and N is a positive integer and N≥2. The second long brush member 231 extends from one end of the second cylindrical member 233 to the other end. It does not extend along the axis of the second cylindrical member 233, but is arranged in a meandering manner on the outer circumferential surface of the second cylindrical member 233, for example, in a spiral arrangement. Each second long brush member 231 covers a second predetermined angle in the circumferential direction of the second cylindrical member 233, and the second predetermined angle is greater than or equal to 360° / N, where N is the number of the second long brush members, and N is a positive integer and N≥2.

[0287] Such an arrangement can enable at least two adjacent pairs of the first long brush members 131 and the second long brush members 231 to be in an interference state simultaneously. As a result, the air intake passage between the two roller brushes is at least partially blocked, the opening size of the air intake passage is reduced, the dust suction pressure is increased, and a better dust suction effect is achieved.

[0288] In some embodiments, as Figures 27-29 shown, when the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 rotate towards each other. The first roller brush 100 rotates along a first rotation direction R1, and the first rotation direction is, for example, counterclockwise. The second roller brush 200 rotates along a second rotation direction R2, and the first rotation direction is opposite to the second rotation direction. The second rotation direction is, for example, clockwise. With such an arrangement, the first roller brush 100 and the second roller brush 200 push the dust and other garbage lifted by the first long brush members 131 and the second long brush members 231 towards the space between the first roller brush 100 and the second roller brush 200, facilitating their entry into the dust box through the air duct 5400.

[0289] In some embodiments, as Figures 27-29 shown, the first long brush member 131 spirally extends from one end of the first cylindrical member 133 to the other end along the second rotation direction R2 on the outer surface of the first cylindrical member 133. The second rotation direction R2 is, for example, clockwise. The second long brush member 231 spirally extends from one end of the second cylindrical member 233 to the other end along the first rotation direction on the outer surface of the second cylindrical member 233, and the first rotation direction R1 is, for example, counterclockwise.

[0290] With such a setting, for any pair of the first long brush members 131 and the 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 move dynamically from one end of the combination formed by the first rotary brush 100 and the second rotary brush 200 towards the other end of the combination, for example, along Figure 28 the transverse axis Y in

[0291] Specifically, for any first long brush member 131 and its corresponding second long brush member 231, when they rotate to positions close to each other along with the first rotary brush 100 and the second rotary brush 200 respectively, for example, when they are located between the first rotary brush 100 and the second rotary brush 200, they interfere with each other. The first long brush member 131 and its corresponding second long brush member 231 start to interfere, for example, from one end of the combination formed by the first rotary brush 100 and the second rotary brush 200, as shown at D1 in Figure 29 . As the first rotary brush 100 and the second rotary brush 200 further rotate, the interference region between them gradually moves along Figure 29 the transverse axis Y in Figure 29 to the other end of the combination formed by the first rotary brush 100 and the second rotary brush 200, as shown at D2 in

[0292] . As the first rotary brush 100 and the second rotary brush 200 further rotate, they disengage from the interference, and so on in a cycle. Figures 27-29 In some embodiments, as shown in

[0293] Figure 30 , the first long brush member 131 inclines towards the second rotation direction R2 in the circumferential direction of the first cylindrical member 133; the second long brush member 231 inclines towards the first rotation direction R1 in the circumferential direction of the second cylindrical member 233. Figure 30 As shown in Figures 28-29 , in some embodiments, the blade structures of the first rotary brush and the second rotary brush are different from the blade structures of the embodiments shown in

[0294] The first long brush member 131 spirally extends from one end of the first cylindrical member 133 along the second rotation direction R2 to the middle of the first cylindrical member 133 on the outer surface of the first cylindrical member 133 and then spirally extends to the other end of the first cylindrical member 133 along the first rotation direction R1. The first long brush member 131 is, for example, distributed in a V shape on the outer peripheral surface of the first cylindrical member 133, and the straight line connecting the two end portions 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 the first long brush members 131 is, for example, four, and they are evenly distributed in the circumferential direction of the first cylindrical member 133.

[0295] Similarly, the second longest brush member 231 spirally extends from one end of the second cylindrical member 233 to the middle of the second cylindrical member 233 along the first rotation direction R1 on the outer surface of the second cylindrical member 233 and then spirally extends to the other end of the second cylindrical member 233 along the second rotation direction R2. The second longest brush member 231 is, for example, distributed in a V shape on the outer peripheral surface of the second cylindrical member 233, and the straight line connecting the two end portions of the second longest brush member 231 is, for example, parallel to the axis of the second cylindrical member 233. In some embodiments, the number of the second longest brush members 231 is, for example, four, and they are evenly distributed in the circumferential direction of the second cylindrical member 233.

[0296] As Figure 30 shown, 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 plurality of first longest brush members 131 interferes with its corresponding second longest brush member 231, reducing the opening size of the air intake passage and increasing the dust suction pressure to achieve a better dust suction effect.

[0297] For any pair of the first longest brush member 131 and the second longest brush member 231, the interference region of the first longest brush member 131 and its corresponding second longest brush member 231 is configured to dynamically move from both ends of the combination formed by the first roller brush 131 and the second roller brush 231 towards the middle of the combination.

[0298] Specifically, for any first longest brush member 131 and its corresponding second longest brush member 231, when they rotate to a position close to each other along with the first roller brush 100 and the second roller brush 200, for example, when they are located between the first roller brush 100 and the second roller brush 200, the two interfere with each other. The first longest brush member 131 and its corresponding second longest brush member 231 start to interfere, for example, from both ends of the combination formed by the first roller brush 100 and the second roller brush 200, as shown at D3 and D4 in Figure 30 . As the first roller brush 100 and the second roller brush 200 further rotate, the interference region of the two gradually moves along the Figure 30 transverse axis Y in Figure 29 to the middle of the combination formed by the first roller brush 100 and the second roller brush 200, as shown at D5 in

[0299] In other embodiments, the interference region between the first long brush member 131 and its corresponding second long brush member 231 is configured to move dynamically from the middle of the combination formed by the first roller brush 100 and the second roller brush 200 towards both ends of the combination. In this case, the air duct inlet 5410 of the air duct 5400 is provided at both ends of the combination formed by the first roller brush 100 and the second roller brush 200, facilitating dust to enter the dust box through the air duct.

[0300] In some embodiments, as Figures 27-29 shown, the first roller brush 100 includes a first short brush member 132, that is, 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.

[0301] The short blades are relatively short and thick, and can provide strong cleaning force when dealing with slightly larger garbage such as fruit shells and particulate matter. For flat and hard cleaning surfaces such as ceramic tiles and wooden floors, the short blades do not contact the ground. When cleaning carpets with a certain thickness, both the long blades and the short blades contact the carpet surface, and at this time, the relatively thick short blades play a key role in patting and peeling the dust and hair hidden in the carpet to improve the cleaning effect.

[0302] 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 of 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 of the same material.

[0303] In some embodiments, as Figures 27-29 shown, the first long brush member 131 and the first short brush member 132 are evenly spaced 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 evenly and alternately spaced in the circumferential direction of the first cylindrical member 133. The second long brush member 231 and the second short brush member 232 are evenly spaced 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 evenly and alternately spaced in the circumferential direction of the second cylindrical member 233.

[0304] 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 allows the roller brush to have a large deformation amount, and has good passability for large particle garbage. The hard-core roller brush has a small deformation amount and high cleaning ability.

[0305] 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.

[0306] 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 further include 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 serves as the first brush member, and the second long brush member 231 of the second roller brush 200 serves as the second brush member. The first brush member and the second brush member interfere with each other to form an interference region.

[0307] In the related art, for automatic cleaning devices such as floor sweeping robots, there are double-roller brush models. For such double-roller brush models, the front and rear two roller brushes can enhance the cleaning ability of the automatic cleaning device. However, the blades of the front and rear two roller brushes can only perform the function of cleaning the ground, cannot clean the roller brush cavity, and there is no interference between the two roller brushes. There is always a predetermined size gap between the two roller brushes, resulting in poor dust suction effect.

[0308] The present utility model provides an automatic cleaning device, including: 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 disposed in a first direction perpendicular to the front-rear axis of the moving platform, the first roller brush including a first brush member; a second roller brush disposed side by side with the first roller brush, the second roller brush including a second brush member, and a roller brush cavity configured to accommodate the first roller brush and the second roller brush; wherein, when the first roller brush and the second roller brush rotate in their respective first working directions, the first brush member and the second brush member interfere with each other; when the first roller brush and the second roller brush rotate in their respective second working directions, the interference amount between the first brush member and the second brush member increases.

[0309] The present utility model further provides an automatic cleaning device, including: 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 disposed in a first direction perpendicular to the front-rear axis of the moving platform, the first roller brush including a first brush member; a second roller brush disposed side by side with the first roller brush, the second roller brush including a second brush member, and a roller brush cavity configured to accommodate the first roller brush and the second roller brush; wherein, when the first roller brush and the second roller brush rotate in their respective first working 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 in their respective second working directions, at least one of the first brush member and the second brush member interferes with the inner wall of the roller brush cavity.

[0310] The present utility model is provided with two rotatable brushes rotating in opposite directions, such that when the automatic cleaning device performs a cleaning operation, 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 brush roller cavity; when the automatic cleaning device performs a dust collection operation, the interference amount 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 brush roller cavity. Different functions can be achieved through forward and reverse rotation. During the dust suction process, not only is the noise small, but more dust can be involved. When rotating in reverse, the inner wall of the brush roller cavity can be scraped and cleaned, facilitating the cleaning of the inner wall of the brush roller cavity.

[0311] The following will be described in conjunction with the attached Figures 27-31 The cleaning module 5000 includes a first brush roller 100, a second brush roller 200, and an air duct 5400. The first brush roller 100 and the second brush roller 200 constitute the aforementioned brush roller 5300. The first brush roller 100 includes a first brush member, and the first brush member includes a first long brush member 131 and a first short brush member 132. The second brush roller 200 includes a second brush member, and the second brush member includes a second long brush member 231 and a second short brush member 232.

[0312] The first brush roller 100, for example, is a front brush, and is arranged in a first direction perpendicular to the axis of the moving platform. The axis of the moving platform is, for example, the front-rear axis X, and the first direction is, for example, the direction in which the transverse axis Y extends. The first brush roller 100 includes a first long brush member 131, that is, a first long blade. The long blade is relatively long and thin. When dealing with flat and hard cleaning surfaces such as ceramic tiles and wooden floors, the long blade can contact the ground, pat and roll up the dust, hair and other garbage that need to be cleaned, and then suck it into the dust box. The contact force between the long blade and the ground is small, and the daily cleaning noise is low.

[0313] The second brush roller 200, for example, is a rear brush, is arranged side by side with the first brush roller 100, and is also arranged in the first direction perpendicular to the axis of the moving platform. The second brush roller 200 includes a second long brush member 231, that is, a second long blade.

[0314] The air duct 5400 is arranged on the side of the first brush roller 100 and the second brush roller 200 away from the operation surface, and is configured to guide the dust to be received, for example, guide the dust to be received into the dust box.

[0315] The brush roller cavity 5210 bulges upward along the top of the brush roller frame 5200 to form a cavity for accommodating the first brush roller 100 and the second brush roller 200; the brush roller cavity 5210 is a cavity with an opening at the bottom, and the opening faces the ground. The brush roller cavity 5210 sucks the debris and dust on the ground through this opening, thereby playing a role in cleaning the ground. The top of the brush roller cavity 5210 is communicated with the air duct 5400 through an air duct opening.

[0316] When the automatic cleaning device performs a cleaning operation, 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 chamber 5210; when the automatic cleaning device performs a dust collection operation, the interference amount 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 chamber 5210.

[0317] During actual use, dust is sucked into the roller brush chamber 5210 by two oppositely rotating roller brushes, and the two roller brushes are in contact with each other through long blades. Thus, during use, the long blades where the two roller brushes are in contact form independent volumes to suck dust. Such a design not only produces less noise but also avoids dust and debris from being thrown out, and other sundries and garbage can also be sucked into the space between the two roller brushes, greatly improving the dust collection efficiency.

[0318] The cleaning device of this embodiment, as Figure 28 shown, two arc-shaped cavity surfaces are respectively formed at the top of the roller brush chamber 5210. Each cavity surface is close to a roller brush and does not contact the roller brush. When the automatic cleaning device performs a cleaning operation, each roller brush rotates in the opposite direction 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 interference amount is relatively small, making the rotation smooth and unobstructed, facilitating the smooth rolling in of garbage. When the automatic cleaning device performs a dust collection operation, 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 decreases. For example, the long blade is in a state that is approximately perpendicular to the cylindrical member. At this time, the long blade can scrape or pat the cavity surface of the roller brush chamber 5210, so that the dust on the blade and the cavity surface can fall off, realizing self-cleaning of the roller brush chamber 5210 and the long blade.

[0319] As Figure 28 shown, during normal cleaning, the front and rear brushes roll inwards towards the middle. The corresponding front brush rotates counterclockwise, and the rear brush rotates clockwise. The front brush is inclined in the clockwise direction, and the rear brush is inclined in the counterclockwise direction. When cleaning, the direction of the contact force received by the roller brush is exactly the direction of the deformation of the blade. At this time, the sound of the contact with the ground is the softest, which helps to reduce noise. From the tilting direction of the blade setting, when the front brush rotates forward, the blade is deformed backward by the contact force and is deformed in the direction of decreasing the diameter of the main brush (the blade of the rear brush is deformed counterclockwise). At this time, it will not scrape the inner wall of the roller brush chamber 5210; when the main brush rotates backward, the blade is deformed after receiving the contact force and is deformed in the direction of increasing the diameter (the blade of the rear brush is deformed clockwise). At this time, it can scrape the inner wall for self-cleaning (when the blade rotates at high speed, the centrifugal force will also increase the diameter).

[0320] In some embodiments, the first long brush member 131 has a root portion adjacent to the first cylindrical member 133 and a top portion away from the first cylindrical member 133, and the thickness of the root portion of the first long brush member is less than the thickness of the top portion of the first long brush member; and / or, the second long brush member 231 has a root portion adjacent to the second cylindrical member 233 and a top portion away from the second cylindrical member, and the thickness of the root portion of the second long brush member is less than the thickness of the top portion of the second long brush member. This can ensure 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, thereby increasing the flapping effect with the inner wall of the roller brush chamber 5210.

[0321] In some embodiments, the first long brush member 131 has a first width from the root portion of the first long brush member to the top portion of the first long brush member, and the first width is greater than the distance between the first roller brush 100 and the inner wall of the roller brush chamber 5210; and / or, the second long brush member 231 has a second width from the root portion of the second long brush member to the top portion of the second long brush member, and the second width is greater than the distance between the second roller brush 200 and the inner wall of the roller brush chamber 5210. Thus, in the reverse dust collection state of the roller brush, the first long brush member 131 and the second long brush member 231 have sufficient length to contact the inner wall of the roller brush chamber 5210 for flapping.

[0322] When the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 rotate towards each other to perform a cleaning operation. Specifically, the first roller brush 100 rotates along a first rotation direction R1, and the first rotation direction R1 is, for example, counterclockwise, and the second roller brush 200 rotates along a second rotation direction R2, and the second rotation direction R2 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 can contact the ground, and pat and roll up the dust, hair and other garbage to be cleaned.

[0323] When the automatic cleaning device performs a cleaning operation, the first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 interfere with each other to form an interference region. Specifically, as Figure 28 and Figure 29 shown, the first long brush member 131 and the second long brush member 231 interfere with each other between the first roller brush 100 and the second roller brush 200 to form an interference region. At least part of the air intake passage between the two roller brushes is blocked, the opening size of the air intake passage is reduced, the dust suction pressure is increased, and a better dust suction effect is achieved.

[0324] The interference region is configured to move dynamically along a predetermined direction, for example, move dynamically along the direction extending along the first roller brush 100 and the second roller brush 200, so that dust at all positions of the operation surface swept by the roller brush has the opportunity to be successively sucked into the air duct with greater suction force and then enter the dust box. The air duct inlet 5410 of the air duct 5400 is arranged at the downstream of the predetermined direction, facilitating the entry of dust into the dust box through the air duct.

[0325] In some embodiments, the first roller brush 100 includes a first shaft rod 110 and a first brush member 130. The first shaft rod 110 can be a rod-shaped structure, such as a long cylindrical structure. Both ends of the rod-shaped structure can be detachably installed at the bottom of the device body of the automatic cleaning device directly or through a connecting member. In some embodiments, the first shaft rod 110 together with the first brush member 130 provided on the first shaft rod 110 is detachably installed in a long groove structure at the bottom of the device body, and the long groove structure extends along the transverse axis Y direction.

[0326] The axis of the first shaft rod 110 can be regarded as the rotation axis of the first roller brush 100. When the first roller brush 100 is installed on the device body of the automatic cleaning device, the drive system on the device body can drive the first shaft rod 110 to rotate, and the rotation direction can be clockwise or counterclockwise. When the first shaft rod 110 rotates, it can drive other components provided on the first shaft rod 10, such as the first brush member 130, to rotate together to achieve the purpose of cleaning.

[0327] The first brush member 130 is detachably installed on the first shaft rod 110, facilitating the replacement of the first brush member 130 as a consumable. The first brush member 130 includes a first cylindrical member 133 and a first long brush 131.

[0328] The first cylindrical member 133 is configured to be sleeved on the first shaft rod 110 such that the first cylindrical member 130 is coaxial with the first shaft rod 110. The first cylindrical member 130 can be a long 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 tightly sleeved on 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, so that there is no relative movement between the first shaft rod 110 and the first cylindrical member 130 during the rotation process. The first cylindrical member 130 can be a flexible member, for example.

[0329] The first long brush member 131, which is the first long blade, extends away 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 of the same material.

[0330] The second rotary brush 200 includes a second shaft 210 and a second brush member 230. The second shaft 210 may be a rod-like structure, such as a long cylindrical structure. Both ends of the rod-like structure can be detachably mounted to the bottom of the device body of the automatic cleaning device directly or through a connecting member. In some embodiments, the second shaft 210 together with the second brush member 230 provided on the second shaft 210 is detachably mounted in a long groove structure at the bottom of the device body, and the long groove structure extends along the transverse axis Y direction.

[0331] The axis of the second shaft 210 can be regarded as the rotation axis of the second rotary brush 200. When the second rotary brush 200 is mounted to the device body of the automatic cleaning device, the drive system on the device body can drive the second shaft 210 to rotate, and the rotation direction can be clockwise or counterclockwise. When the second shaft 210 rotates, it can drive other components provided on the second shaft 210, such as the second brush member 230, to rotate together to achieve the purpose of cleaning.

[0332] The second brush member 230 is detachably mounted on the second shaft 210, facilitating the replacement of the second brush member 230 as a consumable. The second brush member 230 includes a second cylindrical member 233 and a second long brush member 231.

[0333] The second cylindrical member 233 is configured to be sleeved on the second shaft 210 such that the second cylindrical member 230 and the second shaft 210 are coaxial. The second cylindrical member 230 may be a long cylindrical structure, and the length of the second cylindrical member 230 is substantially the same as the length of the second shaft 210. The second cylindrical member 230 is tightly sleeved on the second shaft 210, and the inner diameter of the second cylindrical member 230 is substantially equal to or slightly smaller than the diameter of the second shaft 210 so that there is no relative movement between the second shaft 210 and the second cylindrical member 230 during rotation. The second cylindrical member 230 may be a flexible member, for example.

[0334] The second long brush member 231, which is the second long blade, extends away from the outer surface of the second cylindrical member 230. In some embodiments, the second long brush member 231 and the second cylindrical member 230 are of an integral structure, for example, integrally formed of the same material.

[0335] In some embodiments, the number of the first long brush members 131 and the second long brush members 231 is plural, and the plural first long brush members 131 and the plural second long brush members 231 correspond to each other one by one. Any one of the plural first long brush members 131 is configured to interfere with its corresponding second long brush member 231. Specifically, as Figures 28-30 shown, the first roller brush 100 has 5 first long brush members 131, and the second roller brush 200 has 5 second long brush members 231. Each first long brush member 131 and its corresponding second long brush member 231 respectively rotate to a position close to each other along with the first roller brush 100 and the second roller brush 200. For example, when located between the first roller brush 100 and the second roller brush 200, the two interfere with each other. The first long brush member 131 and its corresponding second long brush member 231 start to interfere from one end, for example. As the first roller brush 100 and the second roller brush 200 further rotate, the interference area between the two moves from one end to the other end. As the first roller brush 100 and the second roller brush 200 further rotate, the two disengage from the interference, and so on in a cycle.

[0336] In some embodiments, as Figure 31 shown, an installation portion 1400 for installing the first roller brush 100 is provided at at least one end of the first roller brush 100. The installation portion 1400 is assembled with the first end portion 52111 of the front cleaning brush installation position 5211. The installation portion 1400 has a plurality of installation teeth 141. The angle between adjacent two tooth grooves is the same as or an integral multiple of the angle between adjacent two long blades 131 on the first roller brush 100. Similarly, the second roller brush also has an installation portion with the same setting, so that no matter how the first roller brush and the second roller brush are assembled, the long blades 131 of the first roller brush 100 can correspond to and interfere with the long blades 231 of the second roller brush 200.

[0337] In the related art, during the process of the automatic cleaning device performing the cleaning of the working surface, its roller brush rotates. On the one hand, it sweeps the dust and makes it enter the dust box through the air duct. On the other hand, it can roll up the winding objects on the working surface. The winding objects gradually gather on both ends of the roller brush. When the winding objects gathered on both ends of the roller brush increase, it needs to be cleaned manually in time, otherwise it is easy to affect the cleaning effect of the automatic cleaning device.

[0338] The present utility model provides an automatic cleaning device, comprising: a mobile platform configured to automatically move on an operation surface; and a cleaning module assembled on the mobile platform and configured to clean the operation surface. The cleaning module includes: a first rolling brush arranged in a first direction perpendicular to the front-back axis of the mobile platform, and a second rolling brush arranged side by side with the first rolling brush. Wherein, at least one end of the first rolling brush has a first receiving cavity configured to accommodate the winding objects rolled up by the first rolling brush, and the first receiving cavity is composed of a flexible peripheral component and a first rigid internal component; at least one end of the second rolling brush has a second receiving cavity configured to accommodate the winding objects rolled up by the second rolling brush, and the second receiving cavity is composed of a rigid peripheral component and a second rigid internal component.

[0339] By providing a receiving cavity at the end of the rolling brush, the present utility model enables the winding objects to be accommodated in the receiving cavity, eliminating the need to frequently clean the winding objects on the rolling brush and reducing the burden on the user. The rigid cavity wall ensures the brush strength and cleaning force of the corresponding rolling brush at the end, while guaranteeing a sufficient and non-deformable reducing receiving space. The flexible cavity wall ensures the passing ability of large-sized garbage between the two cavities, effectively preventing blockage.

[0340] The optional embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. The same structures are as described in the above embodiments and will not be repeated here.

[0341] As Figure 32 shown, the cleaning module 5000 includes a first rolling brush 100 and a second rolling brush 200. The first rolling brush 100 and the second rolling brush 200 constitute the aforementioned rolling brush 5300. When the mobile cleaning device performs a cleaning operation, the first rolling brush 100 and the second rolling brush 200 rotate in opposite directions. One of the first rolling brush 100 and the second rolling brush 200 rotates clockwise, and the other rotates counterclockwise.

[0342] The first rolling brush 100, for example, the front rolling brush, is arranged in a first direction perpendicular to the front-back axis X of the mobile platform. The first direction is parallel to the transverse axis Y of the mobile platform. The second rolling brush 200 is arranged side by side with the first rolling brush 100. The second rolling brush 200, for example, the rear rolling brush, is also arranged in the first direction perpendicular to the front-back axis X of the mobile platform.

[0343] In some embodiments, the first rolling brush 100 is, for example, a soft rolling brush, and its non-brush part can be compressed in a direction perpendicular to the axis of the first rolling brush, enabling larger garbage to easily pass through the first rolling brush and be cleaned. The second rolling brush 200 is, for example, a hard rolling brush, and its non-brush part cannot be compressed in a direction perpendicular to the axis of the second rolling brush, preventing garbage from easily passing through the second rolling brush and ensuring the cleaning effect.

[0344] As Figure 32As shown, at least one end of the first brush roll 100 has a first receiving cavity 101 configured to receive the winding material wound up by the first brush roll 100. The first receiving cavity 101 is composed of a flexible peripheral component and a first rigid internal component. At least one end of the second brush roll 200 has a second receiving cavity 201 configured to receive the winding material wound up by the second brush roll 200. The second receiving cavity 201 is composed of a rigid peripheral component and a second rigid internal component.

[0345] The second brush roll has a receiving cavity with the same structure as that of the first brush roll. In some embodiments, the second brush roll has a second receiving cavity configured to receive the winding material wound up by the second brush roll. The components defining the second receiving cavity include a second rigid peripheral component. The second rigid peripheral component includes a part of the second shaft rod. For example, the second rigid peripheral component includes the inner wall of the end of the second shaft rod. In some embodiments, the components defining the second receiving cavity further include a second rigid internal component, and the second rigid internal component includes at least a part of the end member.

[0346] Both brush rolls are designed with receiving cavities for the winding material to be received therein, so that it is not necessary to frequently clean the winding material on the brush rolls, reducing the burden on the user.

[0347] In some embodiments, as Figures 33-35 shown, the first brush roll 100 includes a first shaft rod 110 and a first end structure 120.

[0348] The first shaft rod 110 has a shaft rod body 113 and a first end 111 located on at least one side of the shaft rod body 113. The cross-sectional dimension of the shaft rod body 113 perpendicular to the axial direction is greater than the cross-sectional dimension of the first end 111 perpendicular to the axial direction.

[0349] The first end member 120 is configured to be mounted on the first end 111, and the first rigid internal component includes a part of the first end member 120. The first end member 120 is made of a hard material. In some embodiments, the first end member 120 is detachably mounted on the first end 111.

[0350] In some embodiments, the first end member 120 includes a guide sleeve 121 configured to receive the first end 111 so that the first end member 120 is mounted to the first end 111. The first rigid internal component includes at least a part of the guide sleeve 121. Specifically, as Figures 33-35 shown, when the first end member 120 is mounted on the first end 111, a part of the first end member 120 surrounds at least a part of the guide sleeve 121, and the two form the first receiving cavity 101.

[0351] In some embodiments, asFigures 33-35 As shown, the first end member 120 has an introduction portion 1211 disposed on the inner peripheral wall of the guide sleeve 121. The first end 111 includes a first mating portion 1111. The introduction portion 1211 and the first mating portion 1111 are matched to form a guiding and mating structure so that the first end member 120 is mounted to the first end 111.

[0352] In some embodiments, the introduction portion 1211 is disposed on the inner peripheral wall of the guide sleeve 121 and spirally extends circumferentially along the guide sleeve 121 in the direction towards the first shaft 110. Correspondingly, the first mating portion 1111 is correspondingly disposed on the outer periphery of the first end 111 and spirally extends circumferentially along the first end 111 in the direction towards the first end member 110. Thus, the guiding and mating structure formed by the introduction portion 1211 and the first mating portion 1111 is a spiral guiding and mating structure. In some embodiments, one of the introduction portion 1211 and the first mating portion 1111 is a convex portion and the other is a concave portion.

[0353] In some embodiments, as Figures 33-35 shown, the first roller brush 100 further includes a first brush member 130 sleeved on the first shaft 110. The first brush member 130 includes a first cylindrical member 131 and a first brush element 132. The first cylindrical member 131 is sleeved on the first shaft 110 such that the first cylindrical member 131 is coaxial with the first shaft 132; the first brush element 132, for example, is a blade, and extends from the outer surface of the first cylindrical member 131 in a direction away from the first cylindrical member 131. The first cylindrical member 131 is made of a flexible material, and the flexible peripheral component includes a part of the first cylindrical member 131.

[0354] In some embodiments, both the first cylindrical member 131 and the first brush element 132 are made of a flexible material, for example, a colloidal material, and are integrally formed.

[0355] As Figures 33-35 shown, the first roller brush 100 further includes a flexible filler 120 located between the first shaft 110 and the first cylindrical member 131. The flexible filler 120, for example, is wrapped around the outer periphery of the shaft body 113 while exposing at least a part of the first end 111. The first cylindrical member 131 of the first brush member 130 is wrapped around the outer periphery of the flexible filler 120. The first roller brush 100 thus formed is a soft roller brush.

[0356] In some embodiments, as Figures 33-35As shown, the end of the first cylindrical member 131 close to the first end cover member 120 has a first accommodation space 1311 opening towards the first end cover member 120. The first accommodation space 1311 accommodates a part of the first end cover member 120 and the first end portion 111, and a part of the first accommodation space 1311 constitutes the first accommodation cavity 101.

[0357] Specifically, the first cylindrical member 131, the flexible filler 120, and the first shaft 110 are all coaxially arranged. The length of the flexible filler 120 in the axial direction is less than the length of the first shaft 110. Specifically, the flexible filler 120 only covers the shaft body 113 of the first shaft 110 and exposes the first end portions 111 located on both sides of the shaft body 113. And the length of the first cylindrical member 131 in the axial direction is greater than or equal to the length of the first shaft 110. In this way, a first accommodation space 1311 opening towards the first end cover member 120 can be formed at both ends of the first cylindrical member 131. When the first end cover member 120 is installed on the first end portion 111, a part of the first accommodation space 1311 constitutes the first accommodation cavity 101.

[0358] In some embodiments, as Figures 33-35 shown, the end of the first end cover member 120 far from the first shaft 110 has a first assembly structure 122. The first assembly structure 122 is used to assemble the first roller brush 100 to the cleaning module, and the first assembly structure 122 can be installed in a matching manner with the installation position on the cleaning module. The distance between the opening of the first accommodation space 1311 and the first assembly structure 122 is less than or equal to the distance between the first end portion 111 and the first assembly structure 122. That is to say, when the first end cover member 120 is installed on the first end portion 111, the end face of the first cylindrical member 131 close to the first assembly structure 122 is flush with or closer to the first assembly structure 122 than the end face of the first end portion 111 close to the first assembly structure 122.

[0359] In some embodiments, the first end cover member 120 includes a driving side end cover member and a driven side end cover member. When the first end cover member 120 is a driving side end cover member, for example, when it is the first end cover member on the left side as in Figures 33-35 , the first assembly structure 122 is a transmission structure, which can be connected to the driving unit in the cleaning module so that the driving unit drives the first roller brush 100 to rotate.

[0360] When the first end cover member 120 is a driven side end cover member, for example, when it is the first end cover member on the right side as in Figures 33-35 , the first assembly structure 122 is a bearing structure to facilitate the rotation of the first roller brush 100.

[0361] In some embodiments, as Figures 33-35 shown, the first end cap member 120 further includes a first blocking structure 123 disposed between the assembly structure 122 and the guide sleeve 121 for preventing the winding material from extending excessively away from the first brush member. The circumferential dimension of the first blocking structure 123 is greater than the circumferential dimensions of the assembly structure 122 and the guide sleeve 121.

[0362] In some embodiments, as Figures 33-35 shown, a part of the guide sleeve 121 is received in the first accommodation space 1311, and the first blocking structure 123 is spaced from the opening of the first accommodation space 1311 by a first preset distance. With such a setting, the winding material can enter the first accommodation portion 101 during the rotation of the first roller brush 100.

[0363] Figure 36 Exploded schematic view of a second roller brush provided by some embodiments of the present invention, Figure 37 Exploded schematic view of a second roller brush provided by some embodiments of the present invention, Figure 38 Cross-sectional schematic view of a second roller brush provided by some embodiments of the present invention.

[0364] In some embodiments, as Figures 36-38 shown, the second roller brush 200 includes a second shaft rod 210 and a second end member 2200.

[0365] The second shaft rod 210 has at least one second end 212. In some embodiments, both ends of the second shaft rod 210 have second ends 212, and the second ends 212 have mating members 213. The second end member 2200 is configured to be matingly installed with the mating members 213 such that the second end member 2200 can be installed on the second ends 212 of the second shaft rod 210.

[0366] The second end 212 has a second accommodation space 2112 opening towards the second end member 2200, the mating members 213 are received in the second accommodation space 2112, the rigid outer peripheral assembly includes a part of the second end 212, and the second accommodation cavity 201 includes a part of the second accommodation space 2112. In some embodiments, the second end member 2200 includes a guide rod 222, and at least a part of the guide rod extends into the second accommodation space 2112 such that the second end member 2200 is matingly installed with the mating members 213, and the second rigid internal assembly includes at least a part of the guide rod 222.

[0367] Specifically, when the second end member 2200 is installed on the second end 212 of the second shaft 210, at least a part of the guide rod 222 extends into the second accommodation space 2112 and is fitted with the mating member 213. For example, the end of the guide rod 222 close to the second shaft 210 is inserted into the mating member 213 to form a mating connection. At this time, the outer wall of a part of the guide rod 222 and the inner wall of the second end 212 of the second shaft 210 form the second accommodation cavity 201.

[0368] In some embodiments, the end of the guide rod 222 facing the second shaft 210 has a guiding portion 2211, and the guiding portion 2211 is configured to form a rotational mating structure with the mating member 213. Specifically, the guiding portion 2211 spirally extends along the circumferential direction of the guide rod 222 in the direction facing the second shaft 210.

[0369] In some embodiments, as Figures 36-38 shown, the second brush 200 further includes a second brush member 230 sleeved on the second shaft 210. The second brush member 230 includes a second cylindrical member 231 and a second brush 232. The second cylindrical member 231 is sleeved on the second shaft 210 such that the second cylindrical member 231 and the second shaft 210 are coaxial. The second brush 232, for example, is a blade, and extends from the outer surface of the second cylindrical member 231 in a direction away from the second cylindrical member 231. The length of the second cylindrical member 231 in the axial direction is less than or equal to the length of the second shaft 210. That is to say, the second cylindrical member 231 can completely cover the outer peripheral surface of the second shaft 210, or can also expose a part of the outer peripheral surface of the second end of the second shaft 210. Such a setting ensures that the second cylindrical member is not collapsed under pressure and ensures the strength and cleaning force of the brush member; preferably, the length of the second cylindrical member 231 in the axial direction is equal to the length of the second shaft 210, and on the basis of ensuring strength and force, an adequate cleaning width is ensured.

[0370] In some embodiments, the second shaft 210 is a rigid component, and the second cylindrical member 231 of the second brush member 230 can be directly sleeved on the second shaft 210.

[0371] In some embodiments, a rigid filler can also be filled between the second brush member 230 and the second shaft 210, and the rigid filler can be regarded as a part of the second shaft 210.

[0372] In some embodiments, both the second cylindrical member 231 and the second brush 232 are made of a flexible material, for example, a colloidal material, and the two are integrally formed.

[0373] In some embodiments, as Figures 36-38As shown, the end of the second end cap member 220 far from the second shaft 210 has a second assembly structure 221, and the second assembly structure 221 is used to assemble the second roller brush 200 to the cleaning module, and the second assembly structure 221 can be installed in a matching manner with the installation position on the cleaning module. The distance between the opening of the second accommodation 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 to say, when the second end cap member 220 is installed on the second end 212, the end face of the second cylindrical member 231 close to the second assembly structure 221 is flush with or further away from the end face of the second end 212 close to the second assembly structure 221.

[0374] In some embodiments, the second end cap member 220 includes a driving side end cap member and a driven side end cap member. When the second end cap member 220 is a driving side end cap member, for example, when it is the second end cap member on the left side as Figures 36-38 shown, the second assembly structure 221 is a transmission structure, which can be connected to the driving unit in the cleaning module, so that the driving unit drives the second roller brush 200 to rotate.

[0375] When the second end cap member 220 is a driven side end cap member, for example, when it is the second end cap member on the right side as Figures 36-38 shown, the second assembly structure 222 is a bearing structure, which facilitates the rotation of the second roller brush 200.

[0376] In some embodiments, as Figures 36-38 shown, the second end cap member 220 further includes a second blocking structure 225, which is arranged between the second assembly structure 221 and the guide rod 222, and is used to prevent the winding from extending too far away from the second brush member. The circumferential dimension of the second blocking structure 225 is larger than the circumferential dimensions of the second assembly structure 221 and the guide rod 222.

[0377] In some embodiments, as Figures 36-38 shown, a part of the guide rod 222 is accommodated in the second accommodation space 2112, and the second blocking structure 225 is spaced from the opening of the second accommodation space 2112 by a second preset distance. With such a setting, the winding can enter the second accommodating portion 201 during the rotation of the second roller brush 200.

[0378] As Figure 37As shown, in some embodiments, the number of guiding portions 2211 of the two side end members is different, forming an anti-misassembly design; in some embodiments, the number of guiding portions of the driving-side end cover member corresponds to the number of groups of the second brush members. Generally, the number of guiding portions is set to be a divisor of the number of groups of the second brush members to ensure the required alignment relationship of the blades after assembly; in some embodiments, the arrangement of the second assembly member 222 on the driving side directly corresponds to the guiding portions, that is, the second assembly structure is formed by N first repeatable unit shapes in the circumferential direction, where N is the number of guiding portions. The guiding portions have N second repeatable units in the circumferential direction. N is a positive integer and N is greater than or equal to 2. The first or second repeatable units form regular or irregular polygons, and the regular polygon is a plum blossom-shaped N-sided polygon. In some embodiments, the N first repeatable units of the first rolling brush form a regular polygon, and the N first repeatable units of the second rolling brush form a plum blossom shape.

[0379] An embodiment of the present invention provides an automatic cleaning device, including: a first rolling brush, the first rolling brush including a first brush member; and a second rolling brush, arranged substantially side by side with the first rolling brush, the second rolling brush including a second brush member; wherein, the first brush member and the second brush member rotate to positions close to each other with the first rolling brush and the second rolling brush, and the adjacent points of the first brush member and the second brush member move dynamically along a predetermined direction as the two rolling brushes rotate.

[0380] In some embodiments, the automatic cleaning device further includes an air duct inlet, and the air duct inlet is arranged downstream of the predetermined direction.

[0381] In some embodiments, the predetermined direction is along the axial direction of the first rolling brush or the second rolling brush, from both ends of the first rolling brush or the second rolling brush to the middle of the first rolling brush or the second rolling brush.

[0382] In some embodiments, the first brush member and / or the second brush member is a V-shaped structure.

[0383] In some embodiments, the predetermined direction is along the axial direction of the first rolling brush or the second rolling brush, from one end of the first rolling brush or the second rolling brush to the other end of the first rolling brush or the second rolling brush.

[0384] In some embodiments, the first brush member and / or the second brush member is a spiral structure.

[0385] In some embodiments, the first brush member and the second brush member rotate to positions close to each other with the first rolling brush and the second rolling brush when the first brush member and the second brush member are located between the first rolling brush and the second rolling brush.

[0386] In some embodiments, at least one of the first roller brush and the second roller brush is incompressible.

[0387] In some embodiments, at least one of the first roller brush and the second roller brush further includes a first cylindrical member and a first shaft rod.

[0388] In some embodiments, when the first roller brush and the second roller brush rotate, there is no contact between the first brush member and the second brush member.

[0389] In some embodiments, when the first roller brush and the second roller brush rotate, there is mutual abutment between the first brush member and the second brush member.

[0390] In some embodiments, the first cylindrical member cannot be compressed in the length direction of the first shaft rod.

[0391] In some embodiments, the first shaft rod is a rigid rod.

[0392] In some embodiments, the first cylindrical member and the first shaft rod are substantially the same in length.

[0393] In some embodiments, the first cylindrical member and the first shaft rod are coaxially arranged.

[0394] Compared with the prior art, the above technical solutions of the present utility model have the following beneficial technical effects:

[0395] The first brush member and the second brush member rotate with the first roller brush and the second roller brush to a position close to each other. The adjacent points of the first brush member and the second brush member move dynamically along a predetermined direction as the two roller brushes rotate. The interference area is configured to move dynamically along the predetermined direction, so that dust at all positions of the operation surface swept by the roller brush has the opportunity to be sucked into the air duct and then into the dust box in sequence with greater suction.

[0396] It should be noted that: the various embodiments in this specification are described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the systems or devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0397] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. An automatic cleaning device, characterized in that: include: A first roller brush, wherein the first roller brush comprises a first brush member; as well as A second roller brush, arranged substantially side by side with the first roller brush, the second roller brush comprising a second brush member; Wherein, the first brush member and the second brush member rotate to a position close to each other along with the first roller brush and the second roller brush, and the adjacent points of the first brush member and the second brush member dynamically move along a predetermined direction along with the rotation of the two roller brushes; Wherein, the automatic cleaning device further comprises an air duct inlet, and the air duct inlet is arranged downstream of the predetermined direction.

2. The automatic cleaning device according to claim 1, characterized in that: The predetermined direction is a direction along the axial direction of the first roller brush or the second roller brush, pointing from two ends of the first roller brush or the second roller brush to the middle of the first roller brush or the second roller brush.

3. The automatic cleaning device according to claim 2, characterized in that: The first brush member and / or the second brush member is of a V-shaped structure.

4. The automatic cleaning device according to claim 1, characterized in that: The predetermined direction is a direction along the axial direction of the first roller brush or the second roller brush, pointing from one end of the first roller brush or the second roller brush to the other end of the first roller brush or the second roller brush.

5. The automatic cleaning device according to claim 4, characterized in that: The first brush element and / or the second brush element is of a spiral structure.

6. The automatic cleaning device according to claim 1, characterized in that: The first brush member and the second brush member are formed when the first brush member and the second brush member are located between the first and second roller brushes as the first roller brush and the second roller brush rotate to positions close to each other.

7. The automatic cleaning device according to any one of claims 1 to 6, characterized in that: At least one of the first roller brush and the second roller brush is incompressible.

8. The automatic cleaning device according to any one of claims 1 to 6, characterized in that: At least one of the first and second roller brushes further includes a first cylindrical member and a first shaft.

9. The automatic cleaning device according to any one of claims 1 to 6, characterized in that: When the first roller brush and the second roller brush rotate, there is no contact between the first brush member and the second brush member.

10. The automatic cleaning device according to any one of claims 1 to 6, characterized in that: When the first roller brush and the second roller brush rotate, the first brush member and the second brush member overlap each other.

11. The automatic cleaning device according to claim 8, characterized in that: The first tubular member is not compressible in the length direction of the first shaft.

12. The automatic cleaning device according to claim 8, characterized in that: The first shaft rod is a hard rod.

13. The automatic cleaning device according to claim 8, characterized in that: The first cylindrical member and the first shaft have substantially the same length.

14. The automatic cleaning device according to claim 8, characterized in that: The first cylindrical member and the first shaft are coaxially arranged.

Images