WO2024139709A1 - Automatic cleaning device - Google Patents

Abstract

An automatic cleaning device, comprising: a first rolling brush (100), the first rolling brush (100) comprising a first brush member (132); and a second rolling brush (200) arranged substantially side by side with the first rolling brush (100), the second rolling brush (200) comprising a second brush member (232). The first brush member (132) and the second brush member (232) rotate along with the first rolling brush (100) and the second rolling brush (200) to positions where the first brush member (132) and the second brush member (232) move close to each other, and adjacent points of the first brush member (132) and the second brush member (232) dynamically move in a predetermined direction along with the rotation of the two rolling brushes.

Description

Automatic cleaning equipment

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure claims the priority of Chinese patent applications No. 202211734557.9, 202211739051.7, 202211739794.4, 202211740301.9 and 202211736856.6 filed on December 30, 2022, respectively. The contents of all the above-mentioned Chinese patent application disclosures are hereby cited in their entirety as part of the present disclosure.

Technical Field

The present disclosure relates to the technical field of cleaning equipment, and in particular to an automatic cleaning equipment.

Background technique

With the continuous development of science and technology, automatic cleaning equipment, such as sweeping robots, sweeping and mopping machines, etc., have been widely adopted by families. In order to realize the sweeping function, a cleaning robot with a sweeping function is provided with a cleaning brush to roll up garbage of different sizes on the ground and suck it into a garbage collection box.

The structure and setting method of the cleaning brush have become one of the important factors affecting the cleaning effect of automatic cleaning equipment. However, the existing single brush structure cannot improve the cleaning effect of the automatic cleaning equipment, and cannot perform targeted cleaning for different cleaning surface materials, thereby limiting the widespread application of automatic cleaning equipment.

Summary of the invention

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

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

In some embodiments, 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.

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

In some embodiments, the predetermined direction is along the axial direction of the first roller brush or the second roller brush, from the first roller brush to the second roller brush. One end of a roller brush or a second roller brush points in the direction of the other end of the first roller brush or the second roller brush.

In some embodiments, the first brush element and/or the second brush element is a spiral structure.

In some embodiments, 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 roller brush and the second roller brush as the first roller brush and the second roller brush rotate to positions close to each other.

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

In some embodiments, at least one of the first roll brush and the second roll brush further includes a first cylindrical member and a first shaft.

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.

In some embodiments, when the first roller brush and the second roller brush rotate, the first brush member and the second brush member overlap each other.

In some embodiments, the first tubular member is not compressible in the length direction of the first shaft.

In some embodiments, the first shaft is a hard rod.

In some embodiments, the first cylindrical member and the first shaft are substantially the same length.

In some embodiments, the first cylindrical member and the first shaft are coaxially disposed.

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

The first brush member and the second brush member rotate to positions 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, and the interference area is configured to dynamically move along the predetermined direction, so that dust at all positions of the operating surface cleaned by the roller brush has the opportunity to be sucked into the air duct in sequence with greater suction force and then enter the dust box.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

FIG1 is a schematic diagram of a three-dimensional structure of an automatic cleaning device provided in some embodiments of the present disclosure;

FIG2 is a bottom view of an automatic cleaning device provided by some embodiments of the present disclosure;

FIG3 is a schematic diagram of a cleaning module structure provided by some embodiments of the present disclosure;

FIG4 is a schematic cross-sectional view of a cleaning module provided in some embodiments of the present disclosure;

FIG5 is a schematic longitudinal cross-sectional view of a first roller brush provided in some embodiments of the present disclosure;

FIG6 is a schematic cross-sectional view of a first roller brush provided in some embodiments of the present disclosure;

FIG6-1 is a schematic cross-sectional view of a second roller brush provided in some embodiments of the present disclosure;

FIG6-2 is a schematic cross-sectional view of a second roller brush provided in other embodiments of the present disclosure;

FIG7 is a three-dimensional structural exploded view of an example of a cleaning brush provided according to the present disclosure;

FIG8 is a perspective structural diagram of an example of a first end member of the cleaning brush of FIG7;

FIG9 is an exploded view of a partial structure of the first end member and the shaft of the cleaning brush of FIG7 at an angle;

FIG10 is an exploded view of the partial structure of the first end member and the shaft of the cleaning brush of FIG7 at another angle;

FIG11 is an exploded view of the three-dimensional structure of the cleaning brush of FIG7 from another angle;

FIG12 is an exploded view of a partial structure of the second end member and the shaft of the cleaning brush of FIG7 at an angle;

FIG13 is an exploded view of a three-dimensional structure of an example of a cleaning brush provided according to the present disclosure;

FIG14 is a schematic cross-sectional view of the cleaning brush of FIG13 ;

FIG15 is a perspective structural diagram of an example of an end member of the cleaning brush of FIG13;

FIG16 is a schematic three-dimensional structural diagram of an example of a matching piece of the shaft rod of FIG13 ;

FIG17 is a schematic three-dimensional structural diagram of an example of a guide matching structure of a matching piece between the end member and the shaft rod of FIG13;

FIG18 is an exploded view of the guide matching structure of FIG17 ;

FIG19 is a schematic diagram of a three-dimensional structural explosion diagram of another example of a cleaning brush provided according to the present disclosure;

FIG20 is an exploded view of a local structure of the cleaning brush of FIG19 at one angle;

FIG21 is an exploded view of the partial structure of the cleaning brush of FIG19 from another angle;

FIG22 is a schematic diagram of the structure of a roller brush provided in some embodiments of the present disclosure;

FIG23 is a schematic diagram of the cross-sectional structure of the roller brush in FIG2 ;

FIG24 is a partial enlarged structural schematic diagram of a roller brush provided in some embodiments of the present disclosure;

FIG25 is a partial enlarged structural schematic diagram of a roller brush provided in some embodiments of the present disclosure;

FIG26 is a partial enlarged structural schematic diagram of a roller brush provided in some embodiments of the present disclosure;

FIG27 is a schematic structural diagram of a cleaning module provided by some embodiments of the present disclosure from another perspective;

FIG28 is a schematic diagram of a cross-sectional structure of a cleaning module provided in some embodiments of the present disclosure;

FIG29 is a schematic diagram of the structure of a first roller brush and a second roller brush provided in some embodiments of the present disclosure;

FIG30 is a schematic diagram of the structure of a first roller brush and a second roller brush provided in some embodiments of the present disclosure;

FIG31 is a schematic structural diagram of a first roller brush provided in some embodiments of the present disclosure;

FIG32 is a schematic diagram of the structure of a first roller brush and a second roller brush provided in some embodiments of the present disclosure;

FIG33 is a schematic diagram of an exploded structure of a first roller brush provided in some embodiments of the present disclosure;

FIG34 is a schematic diagram of an exploded structure of a first roller brush provided in some embodiments of the present disclosure;

FIG35 is a schematic diagram of a cross-sectional structure of a first roller brush provided in some embodiments of the present disclosure;

FIG36 is a schematic diagram of an exploded structure of a second roller brush provided in some embodiments of the present disclosure;

FIG37 is a schematic diagram of an exploded structure of a second roller brush provided in some embodiments of the present disclosure;

Figure 38 is a schematic diagram of the cross-sectional structure of the second roller brush provided in some embodiments of the present disclosure.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure.

It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or device. In the absence of more restrictions, the elements defined by the sentence "comprises a" do not exclude the presence of other identical elements in the product or device including the elements.

In the related art, there are dual-roller brush models of automatic cleaning equipment, such as sweeping robots, in which both roller brushes are usually soft brush structures that are easily deformed. The roller brush structure of the dual soft brushes allows a large degree of deformation and has good passability for large particles of garbage. However, since the soft roller brush process is complex and costly, and it is easy to deform after long-term use, how to reasonably set the structure of the two roller brushes has become a technical problem that needs to be solved urgently.

The embodiment of the present disclosure provides an automatic cleaning device, comprising: a mobile platform, configured to move on an operating surface; a cleaning module, mounted on the mobile platform, configured to clean the operating surface, the cleaning module comprising: a first roller brush, arranged along a first direction perpendicular to the front and rear axis of the mobile platform, the first roller brush comprising: a first brush component; a first shaft; and a first filler, the first filler being configured to be sleeved on the first shaft so that the first filler is coaxial with the first shaft; and a second roller brush, mounted on the cleaning module along a direction parallel to the first roller brush, the second roller brush comprising: a second brush component; and a second shaft component; wherein the first filler is an elastic component, and the second shaft component is a rigid component, And the first filler has a first inner diameter and a first outer diameter, so that the first filler has a preset thickness.

The automatic cleaning device provided by the embodiment of the present disclosure, by setting a double roller brush structure of a first roller brush and a second roller brush, and setting the first filler in the first roller brush as an elastic component, and setting the second shaft component as a rigid component, enables the automatic cleaning device to effectively clean the ground based on both soft and hard types of roller brushes, improves the passability of garbage between the first roller brush and the second roller brush, and reasonably configures the amount of interference between the soft and hard types of roller brushes and the ground, thereby improving the overall cleaning efficiency of the ground.

In the disclosed embodiment, one of the roller brushes is set as a hard brush, which is only composed of an internal hard core and an external rubber. It has a simple structure and high dimensional accuracy. It is easy to control the amount of interference with the ground during cleaning, ensuring that the cleaning effect and noise during cleaning are within an appropriate range. In addition, since the hard brush has no sponge, it will not deform after long-term use, extending its service life. The combination of one soft and one hard can ensure sufficient passability for large particles of garbage.

The optional embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

FIG1-FIG2 is a schematic diagram of the structure of an automatic cleaning device according to an exemplary embodiment. As shown in FIG1-FIG2, the automatic cleaning device can be a vacuum 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-computer interaction system 4000 and a cleaning module 5000. Among them:

The mobile platform 1000 may be configured to automatically move along a target direction on an operating surface. The operating surface may be a surface to be cleaned by an automatic cleaning device. In some embodiments, the automatic cleaning device may be a mopping robot, in which case the automatic cleaning device works on the ground, which is the operating surface; the automatic cleaning device may also be a window cleaning robot, in which case the automatic cleaning device works on the outer glass surface of a building, which is the operating surface; the automatic cleaning device may also be a pipe cleaning robot, in which case the automatic cleaning device works on the inner surface of a pipe, which is the operating surface. Purely for the purpose of illustration, the following description in this disclosure takes a mopping robot as an example.

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 operational decisions based on unexpected environmental inputs; the non-autonomous mobile platform itself cannot adaptively make operational decisions based on unexpected environmental inputs, but can execute established programs or operate according to certain logic. Accordingly, when the mobile platform 1000 is an autonomous mobile platform, the target direction can be determined autonomously by the automatic cleaning device; when the mobile platform 1000 is a non-autonomous mobile platform, the target direction can be set by the system or manually.

The sensing system 2000 includes a position determination device (not shown) located above the mobile platform 1000, The buffer (not shown in the figure) on the forward part of the mobile platform 1000, the cliff sensor (not shown in the figure) and ultrasonic sensor (not shown in the figure) located at the bottom of the mobile platform, the infrared sensor (not shown in the figure), the magnetometer (not shown in the figure), the accelerometer (not shown in the figure), the gyroscope (not shown in the figure), the odometer (not shown in the figure) and other sensing devices provide the control system with various position information and motion status information of the machine.

For the convenience of description, the following directions are defined: the automatic cleaning device can be calibrated by defining the following three mutually perpendicular axes: the transverse axis Y, the front-back axis X, and the vertical axis Z. The direction along the arrow of the front-back axis X is marked as "rearward", and the direction opposite to the arrow direction of the front-back axis X is marked as "forward". The transverse axis Y is essentially along the width of the automatic cleaning device. The direction along the arrow of the transverse axis Y is marked as "left", and the direction opposite to the arrow of the transverse axis Y is marked as "right". The vertical axis Z is the direction extending upward from the bottom surface of the automatic cleaning device. As shown in Figure 1, the direction along the 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, left or right.

The control system (not shown in the figure) is set on the circuit board in the mobile platform 1000, including a computing processor such as a central processing unit and an application processor that communicates with a non-temporary 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, and use a positioning algorithm such as SLAM to draw a real-time map of the environment where the automatic cleaning device is located according to the obstacle information fed back by the position determination device, and autonomously determine the driving path according to the environmental information and the environmental map, and then control the driving system 3000 to move forward, backward and/or turn according to the autonomously determined driving path. Further, the control system can also decide whether to start the cleaning module 5000 for cleaning operations according to the environmental information and the environmental map.

The drive system 3000 can execute a drive command based on specific distance and angle information, such as 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, and the drive system 3000 can control the left and right wheels at the same time. In order to more accurately 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 horizontal axis defined by the mobile platform 1000. In order for the automatic cleaning device to be able to move more stably on the ground or have stronger movement ability, the automatic cleaning device may include one or more steering assemblies, and the steering assembly may be a driven wheel or a driving wheel, and its structural form includes but is not limited to a universal wheel, and the steering assembly may be located in front of the driving wheel assembly.

The energy system (not shown) includes rechargeable batteries, such as nickel-metal hydride batteries and lithium batteries. The rechargeable batteries can be connected to a charging control circuit, a battery pack charging temperature detection circuit, and a battery undervoltage monitoring circuit, which are then connected to a single-chip microcomputer control circuit. The machine is charged by connecting to a charging pile through charging electrodes arranged on the side or bottom of the machine body.

The human-machine interaction system 4000 includes buttons on the host panel for users to select functions; it may also include a display screen and/or indicator lights and/or speakers, which display the current state of the machine or function selection items to the user; it may also include a mobile client program. For path navigation cleaning equipment, the mobile client can show the user a map of the environment where the equipment is located, as well as the location of the machine, and can provide users with more abundant and humanized function items.

As shown in FIG2 , the cleaning module 5000 includes a dust box, a fan, and a main brush module. The main brush module sweeps the garbage on the ground to the front of the dust suction port between the main brush module and the dust box, and then the suction gas generated by the fan and passing through the dust box is sucked into the dust box. The dust removal ability of the sweeper can be characterized by the dust pickup efficiency DPU (Dust pickup efficiency). The cleaning efficiency DPU is affected by the wind power utilization rate of the air duct formed by the dust suction port, dust box, fan, air outlet and the connecting parts between the four, and is affected by the type and power of the fan. It is a complex system design problem. Compared with ordinary plug-in vacuum cleaners, the improvement of dust removal ability is more meaningful for automatic cleaning equipment with limited energy. Because the improvement of dust removal ability directly and effectively reduces the energy requirements, that is, the machine that can clean 80 square meters of the ground with one charge can evolve to clean 180 square meters or more with one charge. In addition, the service life of the battery with reduced charging times will also be greatly increased, so that the frequency of battery replacement by users will also be reduced. More intuitively and importantly, the improvement in dust removal capability is the most obvious and important user experience. Users can directly draw conclusions about whether the sweep/wipe is clean.

FIG2 is a schematic diagram of the structure of the automatic cleaning device in FIG1 when viewed from above. As shown in FIG2, the automatic cleaning device includes a mobile platform 1000, and the mobile platform 1000 is configured to move freely on the operating surface. A cleaning module 5000 is provided at the bottom of the mobile platform 1000, and the cleaning module 5000 is configured to clean the operating surface. The cleaning module 5000 includes a 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 forward or reverse driving force, 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 operating surface, or the roller brush 5300 rotates under the action of the driving force to collect dust.

As shown in FIG. 2 , a front cleaning brush mounting position 5211 and a rear cleaning brush mounting position 5212 for accommodating a cleaning roller brush are provided in the roller brush frame 5200. 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-fitted and fixed at the first end 52111, and the other end of the first roller brush 100 is snap-fitted and fixed at the second end 52112. In some embodiments, the front cleaning brush mounting position 5211 is a long strip groove structure in the mobile platform, and the long strip groove structure extends along the first direction. The rear cleaning brush mounting position 5212 has a third end 52121 and a second end 52112 opposite to the first end 52121. The fourth end portion 52122 opposite to the rear cleaning brush mounting position 5212 is basically the same in structure as the front cleaning brush mounting position 5211 in some embodiments, for example, it is also a long strip groove structure in the mobile platform, the long strip groove structure extends along the first direction, and the second roller brush can be installed in the long strip groove of the rear cleaning brush mounting position 5212 through the opening of the long strip groove structure. Among them, the two long strip groove structures are parallel to each other in the second direction. There is no restriction on the shape and size of the long strip groove structure, and it only needs to accommodate at least a part of the first roller brush and the second roller brush. The first end portion of the front cleaning brush mounting position 5211 and the third end portion of the rear cleaning brush mounting position 5212 are located on one side of the front-rear axis X-axis, and the second end portion of the front cleaning brush mounting position 5211 and the fourth end portion of the rear cleaning brush mounting position 5212 are located on the other side of the front-rear axis X-axis.

It should be noted that in the following embodiments of the present disclosure, the long groove structure close to the steering wheel on the automatic cleaning device is used as the front cleaning brush installation position 5211, and the long groove structure away from the steering wheel is used as the rear cleaning brush installation position 5212 for detailed description. Of course, the opposite is also possible.

As shown in FIG. 2 , in some embodiments, the automatic cleaning device includes two cleaning roller brushes 5300, one cleaning roller brush is disposed at the front cleaning brush mounting position 5211 and is regarded as a “front roller brush”; the other cleaning roller brush is disposed at the rear cleaning brush mounting position 5212 and is regarded as a “rear roller brush”. The front roller brush can be mounted in the front cleaning brush mounting position 5211 through the opening of the long strip groove structure, and the rear roller brush can be mounted in the rear cleaning brush mounting position 5212 through the opening of the long strip groove structure.

Figure 3 is a combined structure of a cleaning module provided in some embodiments of the present disclosure, and Figure 4 is a cross-sectional structure of a cleaning module provided in some embodiments of the present disclosure. As shown in Figures 3 and 4, a roller brush 5300 assembled in a roller brush frame 5200 includes: a first roller brush 100, arranged along a first direction perpendicular to the front-rear axis of the mobile platform, the first roller brush 100 includes: a first brush member; a first shaft 110; and a first filler 120, the first filler 120 is configured to be sleeved on the first shaft 110 so that the first filler 120 is coaxial with the first shaft 110; and a second roller brush 200, arranged along a direction parallel to the first roller brush 100. In some embodiments, the first roller brush 100 and/or the second roller brush 200 can also be assembled in other directions, such as a second direction that is not parallel to the front-rear axis. Obviously, the second direction forms a certain angle with the first direction and the front-rear axis. The second roller brush 200 includes: a second brush component; and a second shaft component 220, the second shaft component 220 being coaxial with the second brush component; wherein the first filler 120 is an elastic component, the second shaft component 220 is a rigid component, and the first filler has a first inner diameter and a first outer diameter, so 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 cylindrical shape, and can be a shape remaining after arbitrary cutting on the basis of the cylindrical shape, such as a discontinuous cylindrical shape. Or it may be one or more independent parts, but their common feature is that they all have the same thickness after assembly, and the inner surface and outer surface of this thickness respectively have the diameter of the cylinder, that is, the first inner diameter and the first outer diameter of the first filler. The first roller brush 100 and the second roller brush 200 rotate in opposite directions relative to each other, so as to roll up the garbage on the operating surface when performing the cleaning task or spit out the garbage in the dust box when performing the dust collection task. It should be noted that, for this embodiment, the first roller brush 100 can be the "front roller brush" described above, or it can be the "rear roller brush" described above, and the second roller brush 200 can also be the "front roller brush" described above, or it can be the "rear roller brush" described above, without limitation.

Specifically, FIG. 5 is a cross-sectional view of the first roller brush provided in some embodiments of the present disclosure along the second direction, and FIG. 6 is a cross-sectional view of the first roller brush provided in some embodiments of the present disclosure along the first direction, as shown in FIGS. 5 and 6 .

The first roller brush 100 includes a first shaft 110, at least one end of which is connected to a multi-stage gear set, receives the driving force of the driving unit 5100 and realizes forward or reverse rotation. The first shaft 110 is in the shape of an elongated cylindrical strip, an elongated square column or an elongated polygonal column, which is not limited to this. The elongated cylindrical shape is used as an example for explanation below. The axis of the first shaft 110 can be regarded as the rotation axis of the first roller brush 100. When the first roller 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 component 130 on the surface of the first shaft 110 to clean.

The first roller brush 100 also includes a first filler 120, which is configured to be sleeved on the first shaft rod 110 so that the first filler 120 is coaxial with the first shaft rod 110. As shown in Figure 4, the cross-section of the first filler 120 is an annular structure, and its inner ring shape matches the cross-sectional shape of the first shaft rod 110. The inner ring shape can be circular, directional, polygonal, etc., and there is no limitation on this. The inner ring is circular as an example, and the outer ring shape is generally circular. When the cross-section of the first filler 120 is annular, the cross-section of the first filler 120 has an inner diameter and an outer diameter, and its inner diameter is roughly equal to the diameter of the first shaft rod 110 to achieve seamless sleeve connection between the first filler 120 and the first shaft rod 110, and its outer diameter is roughly equal to the inner diameter of the first cylindrical member 131 to achieve seamless sleeve connection between the first filler 120 and the first cylindrical member 131. The first filler 120 is a compressible elastic material, which has the property of being compressed inwards when subjected to force and returning to its original state after the force is removed, such as sponge, organic flexible material, resin material, foam material, etc., which are not listed here. In addition, the first filler 120 can also be a hollow material or structure with the same compressible property, such as a spring or a spring sheet, which are not listed here either.

The first roller brush 100 further includes a first brush member 130, which is sleeved on the outside of the first filler 120. The first brush member 130 includes a first cylindrical member 131, which is configured to be sleeved on the outside of the first filler 120 so that the first cylindrical member 131 is coaxial with the first shaft 110. The first cylindrical member 131 is usually cylindrical, and its length is substantially the same as that of the first shaft 110. The first cylindrical member 131 is usually compressible, for example, it is made of elastic plastic or rubber material, and can be compressed inwards to deform under the action of external force, and can return to its original shape after the external force is removed. The first cylindrical member 131 usually has a certain thickness to enhance the wear resistance of the first brush member 130 as a whole. And the first brush member 130 also includes a first brush member 132, which can be a plurality of sheet structures, and the first brush member 132 extends from the outer surface of the first cylindrical member 131 in a direction away from the first cylindrical member 131, and at least one first brush member 132 extends from one end of the first cylindrical member 131 to the other end of the first cylindrical member 131 along the axial direction of the first cylindrical member 131. The first brush member 132 can be in other forms such as blades or bristles.

In some embodiments, there are multiple first brush members 132, each of which is in a spiral structure on the outer surface of the first cylindrical member 131. The multiple first brush members 132 are roughly evenly distributed along the circumference of the first cylindrical member 131, and the spiral structures of the multiple first brush members 132 are roughly parallel. By designing the first brush member 132 as a spiral structure, the front and rear roller brushes can easily roll up garbage when they rotate in opposite directions, and will not generate excessive impact force on the first brush member 132 to cause damage, thereby increasing the service life.

In some embodiments, there are multiple first brush members 132, each of which is in a V-shaped structure on the outer surface of the first cylindrical member 131. The multiple first brush members 132 are roughly evenly distributed along the circumference of the first cylindrical member 131, and the tips of the V-shaped structures of the multiple first brush members 132 point in the same direction in the circumference of the first cylindrical member 131. By designing the first brush member 132 as a V-shaped structure, the front and rear roller brushes can easily roll up garbage when they rotate in opposite directions, and will not generate excessive impact force on the first brush member 132 to cause damage, thereby increasing the service life.

In some embodiments, the surface of the first brush member 132 is provided with a plurality of first protrusions 1321. The plurality of first protrusions on the first brush member 132 are evenly distributed along the extension direction of the surface of the first brush member 132, and the plurality of first protrusions 1321 can increase the friction between the brush member and the garbage, making the cleaning cleaner.

In some embodiments, as shown in FIG6-1, the second roller brush 200 includes a second shaft component 220 and a second brush member 230; the second shaft component 220 is coaxial with the second brush member 230, the second brush member 230 is sleeved on the outside of the second shaft component 220, the second shaft component 220 constitutes the second shaft rod of the second roller brush 200, the second shaft component 220 is a rigid hard member, the second shaft component 220 includes at least one mating piece 213 arranged at at least one end of the second shaft component 220 (for example, the mating piece 213 can be arranged at one end or both ends of the second shaft component 220, also referred to as a mating structure), and is connected to the multi-stage gear set of the drive system 3000 through the mating piece 213, receives the driving force of the drive system 3000 and realizes forward or reverse rotation, wherein the second shaft component 220 has an outer shape of an elongated cylindrical strip, an elongated square column or an elongated polygonal column, which is not limited to this, and the elongated cylindrical shape is used as an example for explanation in the following.

In some embodiments, as shown in Figure 6-1, the second shaft component 220 includes a hollow structure 2210, and the hollow structure 2210 extends axially through the second shaft component 220 along the axis of the second shaft component 220. The second shaft component 220 has a second inner diameter _D2in and a second outer diameter _D2out , and the second inner diameter _D2in and the second outer diameter _D2out constitute the radial thickness of the second shaft component 220. At least one end of the hollow structure (for example, one end or both ends of the second shaft component 220) includes a step portion, and the step portion includes one, two or three steps. For example, when the step portion is a two-step step, the end face of the hollow structure 2210 has a third inner diameter and a fourth inner diameter, wherein the second inner diameter is smaller than the third inner diameter and smaller than the fourth inner diameter, wherein the step portion is located at the outermost end of the hollow structure 2210 to form a accommodating cavity 2222 with the largest diameter (for example, the accommodating cavity 2222 has a fourth inner diameter), and the mating component 213 has an outer shape structure matching the step portion. After the mating component 213 is assembled on the step portion, it is fixedly or detachably connected to the hollow structure. The mating component 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 component 220.

As shown in Fig. 6-1 and Fig. 6-2, the second roller brush 200 further includes a second brush member 230, which is mounted on the outside of the second shaft component 220. The second brush member 230 includes a second cylindrical member 231, which is configured to be mounted on the outside of the second shaft component 220 so that the second cylindrical member 231 is coaxial with the second shaft component 220. The second cylindrical member 231 is generally cylindrical, and its length is substantially the same as that of the second shaft component 220. The second cylindrical member 231 is generally compressible, for example, it is made of elastic plastic or rubber material, so as to be mounted on the outside of the second shaft component 220. The second cylindrical member 231 generally has a certain thickness to enhance the wear resistance of the second brush member 230 as a whole. There is usually 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, the two rigid parts together constitute the second shaft member, and its outer diameter is obviously the outer diameter of the entire rigid part, that is, the second outer diameter _D2outer of the second shaft member. And the second brush member 230 also includes a second brush 232, which can be a plurality of sheet structures, and the second brush 232 extends from the outer surface of the second cylindrical member 231 in a direction away from the second cylindrical member 231, and at least one second brush 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 232 can be in other forms such as blades or bristles.

In some embodiments, there are multiple second brushes 232, each of which is in a spiral structure on the outer surface of the second cylindrical member 231. The multiple second brushes 232 are roughly evenly distributed along the circumference of the second cylindrical member 231, and the spiral structures of the multiple second brushes 232 are roughly parallel. The shape of the second brush 232 matches the shape of the first brush 132, that is, when the shape of the second brush 232 is a spiral structure, the shape of the first brush 132 is also The spiral structure is designed so that the second brush member 232 can be easily rolled up when the front and rear roller brushes rotate in opposite directions, and will not generate excessive impact force on the second brush member 132 to cause damage, thereby increasing the service life.

In some embodiments, there are multiple second brush members 232, each of which is in a V-shaped structure on the outer surface of the second cylindrical member 231. The multiple second brush members 232 are roughly evenly distributed along the circumference of the second cylindrical member 231, and the tips of the V-shaped structures of the multiple second brush members 232 point in the same direction in the circumference 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 in opposite directions, the tip of the V-shaped structure of the second brush member 232 can interfere with the tip of the V-shaped structure of the first brush member 132, thereby easily rolling up garbage.

In some other embodiments, the second roller brush 200 can also be implemented in other forms, as shown in Figure 6-2. For example, the second roller brush 200 includes a second shaft 240, a second filler 250 and a second brush component 230. The structure of the second brush component 230 is as described in the above embodiment and will not be repeated here. The second shaft component as described in the above embodiment is composed of a second shaft rod 240 and a second filler 250. The second filler 250 is sleeved on the second shaft rod 240 so that the second filler 250 is coaxial with the second shaft rod 240. The cross-section of the second filler 250 is an annular structure, and its inner ring shape matches the cross-sectional shape of the second shaft rod 240. The inner ring shape can be circular, directional, polygonal, etc., and there is no limitation on this. The inner ring is circular as an example below. The outer ring shape is generally circular. When the cross-section of the second filler 250 is annular, the cross-section of the second filler 250 has an inner diameter and an outer diameter, and its inner diameter is roughly equal to the diameter of the second shaft rod 240 to achieve seamless fitting of the second filler 250 and the second shaft rod 240, and its outer diameter is roughly equal to the inner diameter of the second cylindrical member 231 to achieve seamless fitting of the second filler 250 and the second cylindrical member 231. The second filler 250 is an incompressible material. The second filler 250 has the characteristic of not being compressed inwards after being subjected to force, so as to provide sufficient support force to the second brush member 230. The material of the second filler 250 is, for example, a rigid material such as hard plastic, hard resin material, metal material, etc., which will not be listed in detail. In addition, the second filler 250 can also be a hollow material or structure with the same incompressible property, such as an incompressible keel structure, to reduce the weight of the second roller brush, which will not be listed in detail.

In some other embodiments, the second filler 250 can be integrally formed with the second shaft 240, and a unified structure is formed of hard material to reduce the rotational clearance.

After the first roller brush 100 and the second roller brush 200 are installed, when the first roller brush 100 and the second roller brush 200 are working, the first roller brush 100 and the second roller brush 200 rotate at the same speed and in opposite directions, for example, the first roller brush 100 rotates counterclockwise and the second roller 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, the brush member of the upper layer has not yet separated, but the brush member of the lower layer has already contacted; As the brush components continue to rotate, the brush components of the previous layer separate, and the brush components at both ends of the next layer contact each other to form a diamond-shaped closed air path in the middle. As the brush components rotate, the brush components collect the garbage in the middle, so that the garbage is sucked into the dust box in the device along with the air duct 5400, thereby achieving the purpose of cleaning. As the first roller brush and the second roller brush rotate synchronously, the diamond-shaped closed air path formed by the brush components of the next layer will gradually become smaller until the current closed cleaning is completed, and the next closed cleaning will start immediately, that is, the brush components at both ends of the next layer contact each other to form a diamond-shaped closed air path in the middle. In this cycle, the first roller brush and the second roller brush can achieve the effect of continuous cleaning, further improving the cleaning efficiency.

In some embodiments, the second brush member 232 is provided with a plurality of second protrusions 2321. The plurality of second protrusions 232 on the second brush member 232 are evenly distributed along the extension direction of the second brush member 232 surface, and the plurality of second protrusions 2321 can increase the friction between the brush member and the garbage, making the cleaning cleaner.

In other embodiments, the first brush component in the first roller brush 100 and the second brush component in the second roller brush 200 may be different, and may be specifically configured according to cleaning requirements. Optionally, the first roller brush 100 is a hair brush and the second roller brush 200 is a rubber brush. This combination can meet the cleaning effect of various ground environments, that is, the first roller brush can be used to clean garbage on soft ground such as carpets by utilizing the good cleaning ability of the hair brush for hair or fine soft fibers; and the second roller brush can be used to clean floors, tiles, and other grounds by utilizing the good cleaning ability of the rubber brush for hard grounds.

In some embodiments, the outer diameter of the second shaft component is smaller than the outer diameter of the first filler, and/or the outer diameter of the second shaft component is larger than the inner diameter of the first filler. Since the second roller brush is an incompressible hard core structure, in order to avoid a significant reduction in the passability of large particles of garbage due to the incompressible hard core structure, it is necessary to set the blades of the second roller brush to be longer than the blades of the first roller brush, and the distance from the outer diameter of the second shaft component (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 component smaller than the outer diameter of the first filler. In addition, when the outer diameter of the second shaft component (hard core) of the second roller brush is too large, the flexible space allowed to pass between the front and rear roller brushes will become smaller, and slightly larger hard garbage will be stuck between the first roller brush and the second roller brush; in addition, when the outer diameter of the second shaft component (hard core) of the second roller brush is further reduced, when 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 second brush member length will gradually increase with the decrease in the outer diameter of the second shaft component (hard core). 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 susceptible to dust adhesion 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 outer diameter of the corresponding second shaft component (hard core) should not be too small. The outer diameter of the second shaft component can be made larger than the inner diameter of the first filler, thereby ensuring that the length of the second brush member is within an appropriate range.

In some embodiments, the plane where the lowest point of the first filler is located is lower than the lowest point of the second shaft component. Since the first filler is compressible, in order to ensure the passability of garbage 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 component is located. When the first roller brush is a front roller brush, the first filler can be compressed to ensure the passability of garbage. When the second roller brush is a front roller brush, the lowest point of the second shaft component is higher, so the passability of garbage can still be ensured. At the same time, since the first roller brush is a rear roller brush and is closer to the ground, it can intercept garbage and is not easy to leak from under the first roller brush, thereby improving the cleaning efficiency of the cleaning equipment.

In some embodiments, the maximum distance that the first brush extends from the outer surface of the first cylindrical member in a direction away from the first cylindrical member is less than the maximum distance that the second brush extends from the outer surface of the second cylindrical member in a direction away from 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 is not less than the length of the second brush, the first roller brush will be larger as a whole. When the first roller brush and the second roller brush are assembled at approximately the same horizontal plane, the amount of interference between the first brush and the ground will be greatly increased, thereby increasing the noise caused by the first brush hitting the ground, and also increasing the resistance to the travel process of the automatic cleaning device, making it inconvenient for the automatic cleaning device to perform cleaning tasks.

In some embodiments, the outer contour formed by the farthest distance of the first brush member extending from the outer surface of the first cylindrical member in the direction away from the first cylindrical member forms the outer diameter of the first roller brush, and the outer contour formed by the farthest distance of the second brush member extending from the outer surface of the second cylindrical member in the direction away from the second cylindrical member forms the outer diameter of the second roller brush, and the outer diameter of the first roller brush is substantially 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 substantially located in the same horizontal plane or are not much different, it can ensure that the first roller brush and the second roller brush have sufficient interference with the ground, thereby achieving a double-brush cleaning effect. In addition, for the automatic cleaning device in a non-working state, the double roller brushes in the storage state can be stored roughly flat in the cleaning module, which also reduces the complexity of design and processing caused by the inconsistent design of the front cleaning brush installation position and the rear cleaning brush installation position.

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 smaller than the outer diameter of the first roller brush and/or the second roller brush. When the outer diameters of the first roller brush and/or the second roller brush are substantially 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 diameters 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, so that 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.

In some embodiments, the first brush is formed from the outer surface of the first cylindrical member along a direction away from the first cylindrical member. The outer contour formed by the farthest distance extending in the direction of the cylindrical member forms the outer diameter of the first roller brush, the outer contour formed by the farthest distance extending from the outer surface of the second cylindrical member in the direction away from the second cylindrical member forms the outer diameter of the second roller brush, and the distance between the axis of the first roller brush and the axis of the second roller brush is not greater than half of the sum of the outer diameters of the first roller brush and 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 half of the sum of the outer diameters of the first roller brush and the second roller brush. When the outer diameters of the first roller brush and/or the second roller brush are not equal, and the distance between the axis of the first roller brush and the axis of the second roller brush is greater than half of the sum of the outer diameters of the first roller brush and the second roller brush, there will be no interference effect between the first brush member and the second brush member, so that 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 equipment.

In some embodiments, the minimum distance from the inner diameter of the first filler to the outer diameter of the second shaft component 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 component is too large so that the minimum distance from the inner diameter of the first filler to the outer diameter of the second shaft component is too small, the flexible space allowed to pass between the front and rear brushes will become smaller, and slightly larger garbage, even flexible garbage, will be stuck between the two brushes and cannot enter the dust box. The limit distance is that the outer diameter of the second shaft component 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 component, the first filler and the second shaft component block the suction force of the fan on the garbage, which will greatly reduce the effect of garbage entering the dust box and reduce the cleaning efficiency.

In some embodiments, the first roller brush and the second roller brush are arranged front and back along the travel direction of the automatic cleaning device. At this time, a double brush assembly structure with a front soft brush and a rear hard brush is formed. In order to ensure that garbage is missed from the rear, it is necessary to set the plane where the lowest point of the outer contour of the second roller brush is located lower than the plane where the lowest point of the outer contour of the first roller brush is located, increase the interference between the second brush and the ground, and protect garbage from leaking from under the second roller brush.

In some embodiments, the second roller brush and the first roller brush are arranged front and back along the travel direction of the automatic cleaning device. At this time, a double brush assembly structure with a hard front and a soft back is formed. In order to ensure that garbage is missed from the back, it is necessary to set the plane where the lowest point of the outer contour of the first roller brush is located lower than the plane where the lowest point of the outer contour of the second roller brush is located, increase the interference between the first brush and the ground, and protect garbage from leaking from under the first roller brush.

The automatic cleaning device provided by the embodiment of the present disclosure, by setting a double roller brush structure of a first roller brush and a second roller brush, and setting the first filler in the first roller brush as an elastic component, and setting the second shaft component in the second roller brush as a rigid component, enables the automatic cleaning device to effectively clean the ground based on both soft and hard types of roller brushes, improves the passability of garbage between the first roller brush and the second roller brush, and reasonably configures the amount of interference between the soft and hard types of roller brushes and the ground, thereby improving the overall cleaning efficiency of the ground.

The specific structure of the first roller brush (also called a soft brush or a cleaning brush) is described in detail below in conjunction with Figures 7-12. The same structure and function have the same technical effect, which will not be described in detail here.

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

7 to 9, an embodiment of the present disclosure provides a cleaning brush 100. The cleaning brush 100 includes: a shaft 110, including a shaft body 113 and a first end 111 and a second end 112 located on both sides of the shaft body 113; a first end member 120, configured to be mounted on the first end 111, and the first end member 120 has a first assembly structure 121 on a side away from the shaft 110. Specifically, the first assembly structure 121 is a transmission structure, and the first assembly structure 121 is connected to the driving mechanism of the cleaning device.

Specifically, the first end member 120 has at least one first introduction portion 1221, and the first end 111 has at least one first matching portion 1111. The at least one first introduction portion 1221 matches with the at least one first matching portion 1111 to form a guiding matching structure so that the first end member 120 can only be installed to the first end 111 in a circumferential assembly manner, that is, the first end member 120 and the shaft rod 110 have a single installation direction when assembled.

The meaning of the circumferential assembly method in this article is as follows: the two assemblies are rotated 360 degrees relative to each other. If there are N assembly methods, then the two are deemed to have N circumferential assembly methods, where N is greater than or equal to 1.

As shown in Fig. 8, the first end member 120 includes a first guide sleeve 122, the first guide sleeve 122 is configured to accommodate the first end 111, and the at least one first introduction portion 1221 is provided on the inner peripheral wall of the first guide sleeve 122, and is a protrusion protruding inward from the inner peripheral wall of the first guide sleeve 122. The first end member 120 is installed at the first end 111 located on the driving side.

Specifically, at least the first introduction portion 1221 extends in a circumferential spiral along the first guide sleeve 122 in a direction away from the first assembly structure 121, and is specifically a spiral shape that extends in a helical rotation along the inner circumferential wall, 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.

It should be noted that, in this example, the first introduction portion 1221 is a protrusion protruding from the inner wall of the first guide sleeve 122, but is not limited to this, as long as one of the first introduction portion 1221 and the first matching portion 1111 is a protrusion and the other is a recessed portion.

In the example of FIG8 , there are two first introduction parts 1221, and the sizes of the two first introduction parts 1221 are different. By setting the sizes of the two first introduction parts different, it is possible to effectively ensure that the first end The part member 120 and the end of the driving side of the shaft have only a single installation direction, so that the installation direction of the blades and other components of the cleaning brush is controlled to be unique.

It should be noted that, in this example, the number of the first inlet parts 1221 is two, but it is not limited to this. In other examples, the number of the first inlet parts 1221 can also be three or more. The above is only explained as an optional example and cannot be understood as a limitation of the present disclosure.

As can be seen from FIG9 , a first matching portion 1111 corresponding to the first first introduction portion 1221 is provided on the outer circumference of the first end portion 111 of the shaft rod 110. In this example, two first matching portions 1111 are provided on the outer circumference of the first end portion 111, and the two first matching portions 1111 correspond to the two first introduction portions 1221 one by one, respectively. The first matching portion 1111 is a groove portion recessed inward from the outer circumference of the first end portion 111, and the first introduction portion 1221 matches the first matching portion 1111 to form a guide matching structure so that the first end member 120 can only be installed to the first end portion 111 in a circumferential assembly manner.

By adding two first introduction parts of different sizes to the inner wall of the first guide sleeve, the introduction installation can be carried out more effectively, and the first end member can only be installed to the first end in a circumferential assembly manner, which can improve the ease of installation of the end member and the stability of the installation structure.

Optionally, a marking portion 1223 (see Figure 8) is provided on the outer periphery of the first guide sleeve 122, which is configured to mark the position of the first introduction portion 1221 on the outer periphery of the first guide sleeve 122, and is used to indicate the rotational assembly direction of installing the first end member 120 on the first end portion 111 of the shaft 110, so that the first introduction portion 1221 is aligned and assembled with the first matching portion 1111.

As shown in FIGS. 8 to 10 , the first guide sleeve 122 is provided with a first locking portion 1222, for example, a groove portion recessed inwardly from the outer circumference of the first guide sleeve 122. Correspondingly, the first end portion 111 is provided with a first locking matching portion 1112, and the first locking portion 1222 cooperates with the first locking matching portion 1112 so that the first end member 120 is locked to the first end portion 111.

Referring to Figures 9 and 10, the first end member 120 also includes a first guide shaft 123, which extends along the axis of the first guide sleeve 122. A first guide hole 1113 is provided on the end surface of the first end 111 away from the second end 112. The first guide hole 1113 is coaxial with the shaft 110 and is configured to accommodate the first guide shaft 123.

As shown in Figures 9 and 10, the end face of the first assembly structure 121 away from the shaft has a regular polygon, and the number of sides of the regular polygon is a multiple of the number of brushes. In other words, the number of sides of the regular polygon of the outer end face of the first end member corresponds to the number of groups of brushes of the automatic cleaning device. For example, the number of sides N of the regular polygon is a multiple of the number of groups (for example, 4 sides, 8 groups of blades; for another example, 4 sides, 4 groups of blades), thus, It can be ensured that after the cleaning brush is installed on the main unit of the automatic cleaning device in N directions, the directions of components such as blades in the brush member of the cleaning brush are consistent.

It should be noted that, in this embodiment, the sides of the regular polygon are N straight sides, but it is not limited thereto. In other embodiments, it can also be adjusted, such as curved sides, or a combination of straight sides and curved sides. In addition, in other examples, the shape of the regular polygon can be adaptively changed according to the number of brushes.

In the example of FIG. 7 , the cleaning brush 100 further includes a brush member 130 coaxially arranged with the shaft 110, and the brush member 130 includes: a cylindrical member 131 sleeved on the outer circumference of the shaft; and a plurality of brush members 132. The plurality of brush members 132 extend from the outer surface of the cylindrical member in a direction away from the cylindrical member 131, and the plurality of brush members 132 are evenly arranged along the circumference of the cylindrical member.

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

It should be noted that, in other examples, the brush member may also include a second brush member or a third brush member, etc., and the second brush member and the third brush member have different shapes and lengths from the first brush member. In addition, the structures of the brush members of different groups are basically the same, and each group of brush members may include one or more blades. When multiple blades are included, the structures of the multiple blades are often not completely the same.

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

Furthermore, the first end member 120 also includes a first blocking structure 125, which is arranged between the first assembly structure 121 and the first guide sleeve 122, and is used to prevent the winding material from excessively extending away from the brush member and to prevent the winding material from excessively extending away from the cleaning brush. The first blocking structure 125 is, for example, at least one blocking ring, and in this example, two blocking rings. As shown in FIG8 , the first blocking structure 125 includes a first wall, a recessed portion, and a second wall from outside to 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 materials such as garbage are wound around the blocking structure of the first end member, which effectively prevents the winding materials from being wound around the shaft rod, and when the end member is removed, the winding materials can be directly removed following the disassembly of the end cover member.

The first guide portion in the first guide sleeve of the first end member forms a guide matching structure with the end of the shaft rod on the driving side, and the first locking portion on the first guide sleeve cooperates with the first locking matching portion at the end of the shaft rod to form a locking matching structure. The guide matching structure and the locking matching structure cooperate with each other to achieve a more effective installation structure, which can further optimize the installation structure of the end member and the shaft rod and thus optimize the overall structure of the cleaning brush. Body structure.

FIG. 11 is an exploded view of the three-dimensional structure of the cleaning brush of FIG. 7 at another angle; FIG. 12 is an exploded view of the partial structure of the second end member and the shaft of the cleaning brush of FIG. 7 at one angle.

As shown in Figures 11 and 12, the cleaning brush 100 further includes a second end member 140. The second end member 140 is located on the driven side and is mounted on the second end 112 of the shaft 110. The second end member 140 has a second assembly structure 141 (specifically a bearing structure) on the side away from the shaft 110, and the second assembly structure 141 can rotate relative to the shaft, and is rotatably connected to other structures (such as a body, etc.) of the cleaning device through the second assembly structure 141.

As shown in Figures 11 and 12, the second end member 140 has at least one second introduction portion 1421, and the second end 112 has at least one second matching portion 1121. The at least one second introduction portion 1421 matches the at least one second matching portion 1121 to form a guiding matching structure so that the second end member 140 can be installed to the second end in a variety of circumferential assembly methods.

Further, the second introduction portion 1421 extends spirally along the circumference of the second guide sleeve 142 in a direction away from the second assembly structure 141, specifically a spiral shape extending spirally along the inner peripheral wall, so that the second introduction portion 1421 has a rotation direction, for example, a rotation direction of clockwise (or counterclockwise) rotation around the axis z of the shaft 110, thereby forming a second introduction direction. In this example, the second introduction direction is the same as the first introduction direction.

It should be noted that, in this example, the first introduction direction and the second introduction direction are the same, but are not limited thereto. In other examples, the rotation direction of the first introduction portion may be, for example, non-helical or linear. In addition, in other examples, the second introduction direction may be different from the first introduction direction. The above is only described as an optional example and cannot be understood as a limitation of the present disclosure.

As shown in FIG. 12 , the at least one second introduction portion 1421 includes two second introduction portions 1421 , and the two second introduction portions 1421 have the same shape and size, so that the second end member can be mounted to the second end portion 112 in two circumferential assembly modes.

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 size of the first matching part 1111 and the size of the second matching 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.

By making the size of the two second guide parts at the driven end between the sizes of the two first guide parts at the driving side, it is possible to ensure that the second end member can be freely installed at multiple angles and that the end members on both sides will not be installed reversely. It can effectively ensure that the blades and other parts of the cleaning brush are oriented in the correct direction after installation.

It should be noted that, in other examples, the number of the second introduction parts can also be three or more. The above is only described as an optional example and cannot be understood as a limitation of the present disclosure. In addition, for the first end member and the second end member, it is preferred to set the two first introduction parts of different sizes on the driving side, because there is a requirement for the installation angle on the driving side, and the second end member on the driven side does not need to be designed 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 the 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. There is no strong requirement for the assembly angle on the driven side. Therefore, in other examples, the size of the second introduction part can also be the same.

A more effective guiding and matching structure can be realized by forming a guiding and matching structure with the first introduction part 1221 and the second introduction part 1421 and the first matching part 1111 and the second matching part 1121. By setting the two first introduction parts 1221 with different sizes and the second introduction part with different sizes from the first introduction part, the first end member can only be installed to the first end in one circumferential assembly mode, and the second end member can be installed to the second end in multiple circumferential assembly modes, so that the installation angles of the first end member and the second end member with the shaft rod can be accurately determined, and a more effective installation structure can be realized.

Furthermore, the outer circumference of the second guide sleeve 142 of the second end member 140 is provided with

The second locking portion 1422 is, for example, a groove recessed inward from the outer circumference of the second guide sleeve 142, or a through hole penetrating the second guide sleeve 142. Accordingly, a first locking matching portion 1123 is provided on the second end portion 112, and the second locking portion 1422 cooperates with the second locking matching portion 1123 so that the second end member 140 is locked to the second end portion 112 to form a locking matching structure.

As shown in Figure 12, the second end member 140 also includes a second guide shaft 144, which extends along the axis of the second guide sleeve 142. A second guide hole (not shown) is provided on the end surface of the second end 112 away from the first end 111. The second guide hole is coaxial with the shaft 110 and is configured to accommodate the second guide shaft 144.

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 110 .

Specifically, the outer diameter of the blocking structure 145 is larger than the outer diameter of the second guide sleeve 142. By providing the blocking structure on the second end member, winding objects such as garbage are wound around the blocking structure of the second end member, which effectively prevents the winding objects from winding around the shaft rod, and enables the winding objects to be directly removed following the disassembly of the end cover member when the end member is removed.

Optionally, the second guide sleeve 142 may also be provided with a marking portion 1423, which is 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 installing the second end member 140 on the shaft 110 and the second end 112, so that the second introduction portion is aligned and assembled with the second mating portion.

Further, the second assembly structure 141 of the second end member 140 is configured as a polygonal shape corresponding to the number of the brushes. In this example, the polygonal shape of the outer end surface of the second assembly structure 141 is a pentagon formed by a combination of straight lines and curves.

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, which makes it easier to distinguish the two ends and improves the convenience of installation.

The cleaning brush disclosed herein ensures that the driving end has a relatively fixed installation direction by setting the introduction component of the end component of the driving end to have a unique circumferential assembly method, which helps to control the installation angle of the roller brush. This will be particularly beneficial 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, such as those scenarios where two roller brushes of the present invention are used to form a dual brush system and their respective blades have certain alignment requirements.

The cleaning brush disclosed in the present invention forms a guide matching structure with the end of the shaft rod through the introduction portion of the inner wall of the guide sleeve of the end member, and forms a locking matching structure with the end of the shaft rod through the locking portion of the outer periphery of the guide sleeve. The guide matching structure and the locking matching structure cooperate with each other, which can more effectively carry out the introduction and installation, realize a more effective guide matching structure, realize a more effective fool-proof installation structure, improve the installation ease and installation structure stability of the end member, optimize the installation structure of the end member and the shaft rod, and thus optimize the overall structure of the cleaning brush.

In addition, by setting the two first introduction parts with different sizes and the second introduction part with different sizes from the first introduction part, the first end member can only be installed to the first end in one circumferential assembly method, and the second end member can be installed to the second end in multiple circumferential assembly methods, so that the installation angles of the first end member and the second end member and the shaft rod can be accurately determined, and a more effective installation structure can be achieved.

In addition, by providing marking portions on the outer circumference of the first guide sleeve and the second guide sleeve to indicate the rotational assembly direction of installing the first end member and the second end member on the first end and the second end of the shaft, it is possible to effectively ensure that the first introduction portion is aligned and assembled with the first matching portion, and it is possible to effectively ensure that the second introduction portion is aligned and assembled with the second matching portion.

In addition, the number of sides of the regular polygon of the outer end surface of the first end member and the number of sides of the brush of the automatic cleaning device The approximate multiple of the number of groups can ensure that after the cleaning brush is installed in the main unit of the automatic cleaning device in N directions, the directions of components such as blades in the brush member of the cleaning brush are consistent.

In addition, 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 being wound around the shaft rod.

The specific structure of the second roller brush (also called a hard brush or a cleaning brush) is described in detail below in conjunction with Figures 13-21. The same structure and function have the same technical effect and will not be described in detail here.

FIG. 13 is an exploded view of a three-dimensional structure of an example of a cleaning brush provided according to the present disclosure. FIG. 14 is a schematic diagram of a cross-sectional structure of the cleaning brush of FIG. 13 . FIG. 15 is a three-dimensional structure of an example of an end member of the cleaning brush of FIG. 13 . FIG. 16 is a schematic diagram of a three-dimensional structure of an example of a matching piece of the shaft rod of FIG. 13 . FIG. 17 is a schematic diagram of a three-dimensional structure of an example of a guide matching structure of a matching piece of the end member and the shaft rod of FIG. 13 . FIG. 18 is a structural exploded view of the guide matching structure of FIG. 17 .

13 to 18 , the cleaning brush 200 includes a shaft 210 having a first end 211 and a second end 212 opposite to each other in the axial direction, at least one of the first end 211 and the second end 212 including a fitting 213; a brush member 230, the brush member 230 being coaxially sleeved on the outer periphery of the shaft 210; and an end member 2200, configured to be mounted in matching relation with the fitting 213, the end member 2200 having an assembly structure 221 on a side away from the fitting 213.

In some embodiments, as shown in FIG14 , at least one of the first end and the second end of the shaft has a housing space, at least a portion of the shaft is a solid structure, the housing space includes a first space segment, the first space segment is configured to accommodate at least a portion of the guide rod, the housing space also includes a second space segment, the guide rod is provided with a guide portion, the second space segment has a structure that matches the shape of the guide portion of the guide rod to match and connect with the guide portion. The housing space also includes a third space segment, the end member is also provided with a guide shaft, the third space segment is configured to accommodate at least a portion of the guide shaft. The inner diameter of the first space segment is greater than the inner diameter of the second space segment, and/or the inner diameter of the second space segment is greater than the inner diameter of the third space segment.

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 located on the driving side, that is, the end member 2200 is a first side end member 2200' connected to the driving unit of the cleaning module, the assembly structure 221 is, for example, a transmission structure 221'. When the end member 2200 is an end member located on the driven side, that is, the end member 2200 is a second side end member 2200" opposite to the first side end member 2200', the assembly structure 221 is, for example, a bearing structure 221".

The following mainly takes the end member on the driving side as an example to illustrate the connection and assembly relationship between the end member and the shaft. The connection relationship between the end member on the side and the shaft rod is similar.

As shown in FIG. 14 , an accommodating space 214 is provided on the end surface of the end member 2200 where the fitting 213 is located, and the fitting 213 is accommodated in the accommodating space 214 . A portion of the end member 2200 is inserted into the accommodating space 214 to match and install with the fitting 213 .

Specifically, the end surface of the matching piece 213 close to the assembly structure 221 is further away from the assembly structure 221 than the opening 2141 of the accommodating space 214, as shown in FIG14. In other words, the outer end surface of the matching piece 213 is closer to the center of the shaft than the outer end surface of the end to which the matching piece 213 belongs. The outer end surface of the matching piece 213 is closer to the center of the shaft than the outer end surface of the corresponding side of the brush component.

Optionally, the end surface of the brush member 230 close to the assembly structure 221 is flush with the opening 2141 of the accommodating space 214, as shown in Figure 14. On the one hand, the end of the brush member is effectively supported, so that the proper force can be maintained when cleaning the floor; on the other hand, the brush member can effectively protect the core rod and the internal matching parts and other three-dimensional structures to prevent the user experience from being reduced due to bumps and damages.

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

Specifically, the guide portion 2221 extends spirally along the circumference of the guide rod 222 in a direction away from the assembly structure 221. The guide portion 2221 is configured as a spiral with a rotation direction, specifically a spiral extending along the outer circumference of the guide rod 222 (i.e., a spiral rotation extension), so that the guide portion 2221 has a rotation direction, for example, a rotation direction of clockwise (or counterclockwise) rotation around the axis of the shaft 210.

14 and 15 , the end member 2200 includes a guide rod 222 and at least one guide portion 2221, wherein the guide portion 2221 is disposed on the outer peripheral surface of the guide rod 222, and the plurality of guide portions 2221 are evenly distributed in the circumferential direction of the guide rod 222, so that the guide portion 2221 forms a rotational mating structure with the mating piece 213, as shown in FIGS. 14 and 17 .

In the example of FIG15 , the guide portion 2221 is a convex portion formed by etching a groove from the outer peripheral surface of the guide rod 222. The guide portion 2221 is formed at an end of the guide rod 222 away from the assembly structure 221.

Specifically, there are plural guide portions 2221. In the example of Fig. 15, there are five guide portions 2221, and the five guide portions 2221 have the same size.

It should be noted that in other examples, the number of guide parts may be three, four, six or more, and the sizes of the guide parts may be different. The above is only described as an optional example and cannot be understood as a limitation of the present invention. In addition, regarding the formation of the guide portion, the guide portion can also be a groove formed by etching inward from the outer circumference of the guide rod. The above is only described as an optional example and cannot be understood as a limitation of the present disclosure. Optionally, at least one of the shape, number and size of the guide portion 2221 is different.

Further, the end member 2200 further comprises a guide shaft 223, the guide shaft 223 extends from the guide rod 222 away from the assembly structure 221, and the end of the guide shaft 223 away from the guide rod 222 has a buckle 2231. Further, the guide rod 222 is an injection molded part, and the guide shaft 223 is a metal part.

In this embodiment, one end of the guide shaft 223 close to the assembly structure 221 is sleeved in the guide rod 222 .

Specifically, the guide shaft 223 includes a snap-fitting piece 2231 disposed along the outer circumferential surface. The snap-fitting piece 2231 is, for example, an annular groove, so that the snap-fitting piece 2231 and the fitting piece 213 form a snap-fitting structure.

As shown in FIG. 16 , the fitting member 213 includes a fitting portion 2131 that matches the shape of the guide portion 2221 , and the fitting portion 2131 has a spiral groove for accommodating the guide portion 2221 .

Specifically, the mating piece 213 includes a main body 2130, which has a cavity. The main body 2130 includes a mating portion 2131 disposed in the cavity, and the mating portion 2131 is a spiral groove extending along the inner wall of the cavity. The mating portion 2131 forms a rotational mating structure with the guide portion 2221, so that the guide rod of the end member and the mating piece form a rotational mating mechanism, see Figure 17 for details.

In this example, the number of the matching portions 2131 is the same as the number of the guiding portions 2221 , for example, five.

It should be noted that, in other examples, the matching portion may be a groove, and the guide portion may be a convex portion. In other examples, the number of matching portions may be three, four, six or more, as long as the number of the guide portions is the same as the number of the matching portions. The above is only described as an optional example and cannot be understood as a limitation of the present disclosure.

By adding a guide portion to the outer circumferential surface of the guide rod, the guide rod of the end member and the matching piece of the shaft rod form a rotational matching structure, which can effectively perform the guided installation, can realize an effective fool-proof installation structure, can improve the ease of installation of the end member, and can improve the stability of the installation structure. By forming a rotational matching structure between the guide rod of the end member and the matching piece inside the shaft rod, and cooperating with the snap-fit structure formed by the guide shaft and the matching piece, the guided installation can be more effectively performed, can realize a more effective fool-proof installation structure, can further improve the ease of installation of the end member, and can further improve the stability of the installation structure.

In the example of Figure 16, the fitting 213 includes an extension portion 2132 connected to the main body 2130 and extending outward from the main body 2130, wherein the extension portion 2132 is closer to the center of the shaft 210 than the main body 2130, and the outer diameter of the extension portion 2132 is smaller than the outer diameter of the main body 2130.

As shown in Figures 17 and 18, the outer peripheral surface of the extension portion 2132 is provided with a plurality of evenly distributed ridges 21321, so that the outer peripheral surface of the extension portion 2132 forms a concave and convex surface, which is used to form a corresponding matching structure with the interior of the shaft rod 210 (i.e., the shape of the interior of the shaft rod) to increase the contact surface between the matching piece 213 and the interior of the shaft rod 210, which is more conducive to bonding the matching piece 213 to the accommodating space 214 of the shaft rod 210, can increase the bonding strength of the bonding structure between the matching piece 213 and the shaft rod 210, and can make the installation more stable.

It should be noted that the coupling structure between the fitting 213 and the interior of the shaft 210 may also be a step coupling structure, etc. In other embodiments, the entire fitting 213 or at least a portion of the fitting 213 may also be integrally formed with the shaft 210. The above is described as an optional example and should not be construed as a limitation of the present disclosure.

As shown in FIG17 , a buckle portion 21322 is provided at one end of the fitting 213 close to the center of the shaft, and the buckle portion 21322 is closer to the center of the shaft than the ridge 21321. The buckle portion 21322 is, for example, a claw portion, and the buckle portion 21322 and the buckle 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 fitting structure.

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

Specifically, the outer diameter of the blocking structure 225 is larger than the outer diameter of the guide rod 210 , and the blocking structure 225 is spaced a certain distance from the first end portion 211 of the shaft rod 210 , as shown in FIGS. 17 and 18 .

In some embodiments, the outer diameter of the blocking structure 225 is greater than the inner diameter and the outer diameter of the accommodating space, and the brush member includes a cylindrical member, the diameter of which is smaller than the diameter of the blocking structure. The end of the brush member close to the shaft is within the axial projection range of the blocking structure 225, the first brush member has a first thinned portion, the first thinned portion is substantially within the axial projection range of the blocking structure, and the second brush member has a second thinned portion, the second thinned portion is located inside and outside the axial projection range of the blocking structure.

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 being wound around the shaft rod.

In another example, in the cleaning brush 200 shown in FIG. 19 , the end member 2200 includes a first side end member 2200′ and a second side end member 2200″, which are respectively matched and installed with the matching pieces 213 of the first end 211 and the second end 212 of the shaft 210, the shaft 210 is a rigid component, the brush member 230 is directly sleeved on the shaft 210, and the cleaning brush 200 is, for example, a hard brush. Optionally, the shaft 210 is a rigid component, and a rigid filler is filled between the brush member 230 and the shaft 210.

In this example, at least one of the shape, number and size of the first guide portion 2221' of the first side end member 2200' (i.e., the end member 2200 of Figure 14) and the second guide portion 2221" of the second side end member 2200" are different.

In an optional embodiment, the shape and size of the first guide portion 2221’ of the first side end member 2200’ and the shape and size of the second guide portion 2221” of the second side end member 2200” are the same, the number of the first guide portions 2221’ of the first side end member 2200’ is greater than the number of the second guide portions 2221” of the second side end member 2200”, and the number of the second guide portions 2221” of the second side end member 2200” is not a divisor of the number of the first guide portions 2221’ of the first side end member 2200’. For example, the number of the first guide portions 2221’ of the first side end member 2200’ is five, and the number of the second guide portions 2221” of the second side end member 2200” is two.

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

In this example, the brush component 230 includes: a cylindrical component, which is sleeved on the outer circumference of the shaft; and a plurality of brush members 232, which extend from the outer surface of the cylindrical component in a direction away from the cylindrical member 231, and the plurality of brush members 232 are evenly arranged along the circumference of the cylindrical member.

It should be noted that, in this example, the brush member 232 includes at least one size of first brush member, for example, five groups of brush members, each group of brush members includes two sizes of first brush members, for example, the first brush member is V-shaped and spiral-shaped. Since the brush member 230 in this example is substantially the same as the brush member 230 in the example of FIG. 13 , the description of the same parts is omitted.

Specifically, the number of the first guide parts 2221' of the first side end member 2200' is a multiple of the number of the brushes 232. For example, if the number of the first guide parts 2221' is five, the number of the brushes 232 is a multiple of five, such as five groups, ten groups, etc., wherein each group includes two or more brushes.

By setting the number of the first guide parts 2221' to a multiple of the number of groups of the brush members 232, it is possible for the brush members 232 to have a specific installation angle when the roller brush is installed in the roller brush frame to facilitate matching interference between the brush members corresponding to each other of the two roller brushes.

In the example of FIG. 19 , the number of the first guide portions 2221 ′ is five, and the number of the brush members 232 is five.

As shown in Figure 20, the second side end member 2200" is installed on the second end 212 of the shaft 210 (that is, the end member located on the driven side, the right end shown in Figure 20), and the second side end member 2200" includes an assembly structure (specifically a bearing structure 221"), and the bearing structure 221" is rotatable relative to the shaft 210, and is connected to other structures of the cleaning equipment (such as a fuselage, etc.) through the rotation of the bearing structure 221" relative to the shaft.

Specifically, the first side end member 2200' has a first mating piece 213' installed on the first end 211 inside the shaft 210, and the second side end member 2200" has a second mating piece 213" installed on the second end 212 inside the shaft 210.

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

In the example of FIG. 19 , the first side end member 2200′ includes a first guide rod 222′, at least one first guide portion 2221′ and a first guide shaft 223′, wherein the first guide rod 222′ is provided with a plurality of first guide portions 2221′, and the first guide portion 2221′ is formed by etching a groove from the outer peripheral surface of the first guide rod 222′ to form a convex portion. The first guide portion 2221′ is formed at an end of the first guide rod 222′ away from the assembly structure 221′.

As shown in FIGS. 20 and 21 , the second side end member 2200 ″ includes a second guide rod 222 ″, at least one second guide portion 2221 ″ and a second guide shaft 223 ″, wherein a plurality of second guide portions 2221 ″ are provided on the second guide rod 222 ″.

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

Optionally, the number of first guide portions 2221' of the first side end member 2200' is an odd number, and the number of second guide portions 2221" of the second side end member 2200" is an even number. Preferably, the number of first guide portions 2221' of the first side end member 2200' and the number of second guide portions 2221" of the second side end member 2200" are not divisors of each other, so as to ensure that the side end member with a smaller number of guide portions cannot be mistakenly installed to the matching piece corresponding to the side end member with a larger number of guide portions, thereby ensuring that any side end member will not be installed incorrectly, achieving maximum fool-proofing.

As shown in Figures 20 and 21, the second end 212 of the shaft 210 includes a second mating piece 213" that matches a second guide portion 2221" of the second guide rod 222", and the number of the second guide portions 2221" is two. The second guide portion 2221" is a convex portion formed by etching a groove from the outer peripheral surface of the second guide rod 222", and is arranged at an end of the second guide rod 222" away from the bearing structure 221".

Specifically, the second mating piece 213" includes an extension portion 2132" connected to the main body portion 2130" and extending outward from the main body portion 2130", and the outer diameter of the main body portion 2130" is larger than the outer diameter of the extension portion 2132". The main body portion 2130" includes a cavity, and the main body portion 2130" includes a mating portion 2131" disposed in the cavity thereof, and the mating portion 2131" is a spiral groove extending along the inner wall of the cavity, and the mating portion 2131" forms a rotational mating structure with the second guide portion 2221", so that the guide rod of the second side end member and the mating piece form a rotational mating mechanism.

As shown in Figures 20 and 21, the outer peripheral surface of the extension portion 2132" of the second mating piece 213" is provided with a plurality of evenly distributed ridges 21321", so that the outer peripheral surface of the extension portion 2132" forms a concave and convex surface, which is used to form a corresponding mating structure with the interior of the shaft 210 (i.e., the shape of the interior of the shaft), so as to increase the contact surface between the second mating piece 213" and the interior of the shaft 210, which is more conducive to bonding the second mating piece 213" to the accommodating space of the shaft 210, can increase the bonding strength of the bonding structure between the second mating piece 213" and the shaft 210, and can make the installation more stable.

Furthermore, a snap-fit portion 21322" is provided at one end of the second mating piece 213" close to the center side of the shaft, and the snap-fit portion 21322" is closer to the center side of the shaft than the ridge 21321". The snap-fit portion 21322" is, for example, a claw portion, and the snap-fit portion 21322" and the snap-fit piece 2231 (i.e., the annular groove portion) of the guide shaft 223 of the second side end member 2200" form a snap-fit structure.

In the example of Figure 19, 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 internally sleeved in 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 211, and the first guide hole is coaxially opened on the end face of the first end 211.

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

Optionally, the first side end member 2200' is provided with a blocking structure 225', which is specifically arranged 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", which is specifically arranged between the assembly structure (specifically the bearing structure 221") and the second guide rod 222". The blocking structures of the two side end members are used to prevent the winding object from excessively extending away from the brush member 230.

In this example, the outer end surface of the first side end member 2200' is configured to be a first polygonal shape corresponding to the number of the brush members 232. Specifically, the transmission structure 221' of the first side end member 2200' The end surface away from the guide rod 222 has a regular polygon, the number of sides of which is the same as the number of the first guide portions 2221 ′ of the first side end member 2200 ′. Meanwhile, the number of the first guide portions 2221 ′ of the first side end member 2200 ′ is a multiple of the number of the brushes 232 .

With such a configuration, when the roller brush is installed on the roller brush frame, the brush member 232 can have a specific installation angle. When there are multiple roller brushes with similar structures, this design will be very beneficial for forming a matching relationship between the blades of the multiple roller brushes. Especially when the blades of the two roller brushes need to be aligned, it can ensure that the blades are aligned to achieve synchronous operation, interference, or staggering in a certain posture, etc., thereby achieving different cleaning effect requirements.

Compared with the prior art, the cleaning brush disclosed in the present invention forms a rotational fitting structure with the matching piece inside the shaft rod through the guide part of the guide rod of the end member, and cooperates with the snap-fit structure formed by the guide shaft and the matching piece, which can more effectively perform guided installation, realize a more effective fool-proof installation structure, further improve the ease of installation of the end member, and further improve the stability of the installation structure.

In addition, 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 being wound around the shaft rod.

In the related art, automatic cleaning equipment, such as sweeping robots, etc., when performing dust collection operations, need to spit out a large amount of garbage in a short period of time. Larger particles of garbage are easily stuck between two roller brushes, causing dust collection failure. Users need to frequently clean manually, affecting the user experience. Therefore, how to avoid garbage jamming during dust collection operations without affecting the performance of the roller brush during cleaning operations has become a technical problem that needs to be solved urgently.

The present disclosure provides a roller brush and an automatic cleaning device, the roller brush comprising: a shaft; and a brush member detachably mounted on the shaft. The brush member comprises: a cylindrical member configured to be sleeved on the shaft so that the cylindrical member and the shaft are coaxial; and a first brush member extending from the outer surface of the cylindrical member in a direction away from the cylindrical member, the first brush member tilting in a first rotation direction in the circumferential direction of the cylindrical member, wherein a one-way blocking structure is provided at the end of the first brush member close to the cylindrical member, so that the first brush member is easy to deform in the reverse direction of the first rotation direction but not easy to deform in the first rotation direction. The roller brush and automatic cleaning device provided by the present disclosure are provided with a one-way blocking structure at the end of the first brush member near the cylindrical member, which can make the first brush member easy to deform in the opposite direction of the first rotation direction but not easy to deform in the first rotation direction. Therefore, when the automatic cleaning device is normally cleaning, the first brush member can provide a strong cleaning effect and is not easy to tilt and deform along the first rotation direction. When collecting dust, the first brush member is easy to deform in the opposite direction of the first rotation direction to prevent large particles of garbage from being clamped during dust collection, thereby improving cleaning efficiency and obtaining a better user experience.

The optional embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The roller brush provided in the embodiment of the present disclosure can be applied to various automatic cleaning devices. As an example, FIG1 shows a schematic diagram of the structure of an automatic cleaning device, but the devices to which the roller brush provided in this embodiment can be applied should not be limited thereto.

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

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

The axis of the shaft 10 can be regarded as the rotation axis of the roller brush 100. When the roller brush 100 is installed on the main body of the automatic cleaning device, the driving system on the main body can drive the shaft 10 to rotate, and the direction of rotation can be clockwise or counterclockwise. When the shaft 10 rotates, other components arranged on the shaft 10, such as the brush member 20, can be driven to rotate together to achieve the purpose of cleaning.

The brush component 20 is disposed on the shaft 10 . Specifically, in some embodiments, the brush component 20 is detachably disposed on the shaft 10 to facilitate daily cleaning and maintenance of the brush component 20 .

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

The cylindrical member 23 is configured to be sleeved on the shaft 10 so that the cylindrical member 23 is coaxial with the shaft 10. The cylindrical member 23 may be a long cylindrical structure, and the length of the cylindrical member 23 is substantially the same as the length of the shaft 10. The cylindrical member 23 is tightly sleeved on the shaft 10, and the inner diameter of the cylindrical member 23 is substantially equal to or slightly smaller than the diameter of the shaft 10, so that no relative movement occurs between the shaft 10 and the cylindrical member 23 during rotation. The cylindrical member 23 may be a flexible member or a rigid member.

The first brush 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 21 tilts along a first rotation direction on the circumference of the cylindrical member 23. FIG. 24 shows an angle α between the first brush 21 and the tangent of the cylindrical member 23, wherein α is less than 90°. For example, in some embodiments, the value range of α is 45° to 85°. By setting the first brush 21 to tilt along the first rotation direction on the circumference of the cylindrical member 23, a certain angle can be created between the first brush 21 and the cleaning surface (such as the ground), thereby making it easier to remove garbage on the cleaning surface during the cleaning process. Take away garbage and improve cleaning capacity.

In some embodiments, the roller brush 100 also includes end caps 30, which are arranged at both ends of the shaft 10. The roller brush 100 is installed in the long groove structure at the bottom of the main body of the automatic cleaning device through the mounting parts on the side of the end caps 30 away from the shaft 10.

In some embodiments, the first brush member 21 extends from one end of the cylindrical member 23 to the other end of the cylindrical member 23. In some embodiments, the extension direction of the first brush member 21 forms a certain 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 points with the cleaning surface, and the first brush member 21 can be more fully in contact with the cleaning surface, so as to facilitate the removal of garbage on the cleaning surface and improve the cleaning ability.

In some embodiments, a one-way blocking structure is provided at the end of the first brush member 21 near the cylindrical member 23. The one-way blocking structure can make the first brush member 21 easy to deform in the opposite direction of the first rotation direction, but not easy to deform in the first rotation direction, that is, the deformation of the first brush member 21 when rotating along the first rotation direction is smaller than the deformation when rotating in the opposite direction of the first rotation direction. Usually, the first rotation direction is the rotation direction of the brush member when the cleaning device performs a cleaning operation, and the opposite direction of the first rotation direction is the rotation direction of the brush member when the cleaning device performs a dust collection operation. By providing a one-way blocking structure, the first brush member 21 can provide a strong cleaning effect when the cleaning device is cleaning normally, and it is not easy to tilt and deform along the first rotation direction; while during dust collection, the first brush member 21 is easy to deform in the opposite direction of the first rotation direction, so as to prevent large particles of garbage from being clamped during dust collection.

24 , in some embodiments, the one-way blocking structure includes: a support component 2111, which can prevent the first brush 21 from deforming in the first rotation direction. Specifically, the support component 2111 is arranged on the first rotation direction side of the end of the first brush 21 close to the cylindrical member 23.

As shown in Figure 24, 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 is working, and the thickness of the second end is less than the thickness of the first end. For example, the second end has a first thinned portion relative to the first end, and the arrangement direction of the first thinned 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.

In some embodiments, with reference to FIG. 24, the second brush member also has a first end and a second end, the first end of the second brush member is used to contact the surface to be cleaned when the automatic cleaning device is working, and 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 brush member The second end of the member has a second thinned portion relative to the first end of the second brush member, and the arrangement direction of the second thinned portion at the second end of the second brush member is basically opposite to the inclination direction of the second brush member relative to the radial direction of the first roller brush.

In some embodiments, an arrangement direction of the second thinned portion at the second end of the second brush member is opposite to an arrangement direction of the first thinned portion at the second end of the first brush member.

In some embodiments, the thickness of the first brush 21 near the end of the cylindrical member 23 is less than a preset threshold value, so that the first brush 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 component 2111 and the end of the first brush 21 near the cylindrical member 23, so that the thickness of the first brush 21 near the end of the cylindrical member 23 is less than a preset threshold value. When the first brush 21 has a tendency to deform in the first rotation direction, the support component 2111 supports the end of the first brush 21 near the cylindrical member, and the slit width of the slit 216 becomes smaller; and when the first brush 21 has a tendency to deform in the reverse direction of the first rotation direction, the end of the first brush 21 near the cylindrical member 23 moves away from the support component 2111, and the slit width of the slit 216 becomes larger. By providing the slit 216, a certain gap is formed between the first brush member 21 and the supporting member 2111, so that the first brush member 21 also has a certain degree of freedom in the first rotation direction and can be appropriately deformed to adapt to different cleaning surfaces. In actual cleaning operations, the slit width of the slit 216 can be adjusted according to the cleaning surface, thereby changing the degree of deformation of the first brush member 21 in the first rotation direction to a certain extent to adapt to different cleaning surfaces.

In some embodiments, the first brush member 21 has an end portion close to the cylindrical member 23, and the support member 2111 has an inclined surface facing the end portion. Furthermore, the inclination angle β of the inclined surface relative to the circumferential section of the cylindrical member 23 is smaller than the inclination angle α of the first brush member 21 relative to the circumferential section of the cylindrical member 23, and the specific angles of the two can be adjusted according to actual conditions, 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. In actual cleaning operations, the inclination angle α and the inclination angle β can be adjusted according to the cleaning surface, thereby changing the degree of deformation of the first brush member 21 in the first rotation direction to a certain extent to adapt to different cleaning surfaces.

The support component 2111 extends along the end of the first brush member 21 close to the cylindrical member 23. In some embodiments, the support component 2111 is a continuous structure, that is, the support component 2111 extends continuously along the end 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 other embodiments, referring to FIG. 25, the support component 2111 is a discontinuous structure, that is, the support component 2111 is discretely arranged at the end close to the cylindrical member 23. When the support component 2111 is a discontinuous structure, it can save materials and reduce the overall weight of the first brush member 21 . In addition, the support component 2111 with a discontinuous structure can also reduce the residual garbage caused by the gap between the first brush member 21 and the support component 2111 .

Referring to FIG. 26 , in some embodiments, the one-way blocking structure includes a slit, for example, a slit 215 is provided at the end of the first rotation direction side of the first brush 21 close to the cylindrical member 23. When the first brush 21 has a tendency to deform in the first rotation direction, the slit 215 is closed to prevent the first brush 21 from deforming in the first rotation direction; when the first brush 21 has a tendency to deform in the reverse direction of the first rotation direction, the slit 215 is expanded to cause the first brush 21 to deform in the reverse direction of the first rotation direction. By providing the slit 215 on the first brush 21, the deformation parameters of the first brush 21 in the reverse direction of the first rotation direction can be changed, so that the first brush 21 is easy to deform in the reverse direction of the first rotation direction but not easy to deform in the first rotation direction. In addition, the process of providing the slit 215 on the first brush 21 is simple, which is convenient for promotion and application.

Furthermore, 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 also have a certain degree of freedom in the first rotation direction, and can be appropriately deformed to adapt to different cleaning surfaces. In 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 the degree of deformation of the first brush member 21 in the first rotation direction to a certain extent to adapt to different cleaning surfaces.

In some embodiments, the surface of the first brush member 21 is provided with protrusions 213. In some embodiments, there may be a plurality of protrusions 213, which are arranged along the extension direction of the first brush member 21, and the positions of the protrusions 213 are away from the cylindrical member 23 and close to the cleaning surface. By providing the protrusions 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 remove garbage from the cleaning surface can be improved, and the cleaning effect of the first brush member 21 can be enhanced.

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 on the circumference of the cylindrical member 23. When performing cleaning operations, the multiple first brush members 21 can work together to increase the contact area between the brush member and the cleaning surface, thereby improving the cleaning efficiency.

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 tilts along the first rotation direction on the circumference of the cylindrical member 23, and the tilt angle can range from 45° to 85°. By setting the second brush member 22 on the circumference of the cylindrical member 23 along the first rotation direction, the second brush member 22 can tilt along the first rotation direction. The first rotation direction is tilted, so that a certain angle can be formed between the second brush member 22 and the cleaning surface, so that it is easier to remove the garbage on the cleaning surface during the cleaning process, thereby improving the cleaning ability.

In some embodiments, the second brush member 22 extends from one end of the cylindrical member 23 to the other end of the cylindrical member 23. In some embodiments, the extension direction of the second brush member 22 forms a certain angle with the axis of the shaft 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 points with the cleaning surface, and the second brush member 22 can achieve more sufficient contact with the cleaning surface, so as to facilitate the removal of garbage on the cleaning surface and improve the cleaning ability.

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 on the circumference of the cylindrical member 23. Further, the first brush member 21 and the second brush member 22 are alternately and evenly arranged on the circumference of the cylindrical member 23. For example, the brush member 20 of the roller brush 100 includes 10 brush members, of which 5 are first brush members 21 and 5 are second brush members 22, and the first brush members 21 and the second brush members 22 are alternately and evenly arranged on the circumference of the cylindrical member 23.

In some embodiments, the extension length of the second brush member 22 away from the cylindrical member 23 is greater than the extension length 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 the thickness of the brush member body of the first brush member 21. That is, relatively speaking, the first brush member 21 is short and thick, and the second brush member 22 is long and thin. The first brush 21 can provide a strong cleaning force when dealing with slightly larger garbage such as shells, particles, etc., and the first brush 21 does not contact the cleaning surface when dealing with flat and hard cleaning surfaces such as tiles and wooden floors; the second brush 22 can contact the ground when dealing with flat and hard cleaning surfaces such as tiles and wooden floors, beat and roll up the dust, hair and other garbage that needs to be cleaned, and then suck them into the dust box. The second brush 22 has a small contact force with the ground, and low noise is required for daily cleaning; when cleaning a carpet with a certain thickness, both the first brush 21 and the second brush 22 are in contact with the carpet surface, and the relatively thick first brush 21 plays a key role in beating and peeling off the dust and hair hidden in the carpet, thereby improving the cleaning effect.

In some embodiments, the thickness of the end of the second brush member 22 away from the cylindrical member 23 is greater than the thickness of the end of the second brush member 22 close to the cylindrical member 23. Thus, 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 be deformed accordingly according to different cleaning operations.

In some embodiments, after the cylindrical member 23 is sleeved on the shaft 10, the cylindrical member 23 is incompressible. That is, the roller brush 100 is a hard brush structure. The shaft 10 is, for example, a hard rod. After the cylindrical member 23 is sleeved on the hard shaft 10, the cylindrical member 23 is incompressible. That is, the shaft is The surface against which the brush member bears is at least partially incompressible, for example, the surface against which the shaft bears is entirely incompressible.

In some embodiments, the automatic cleaning device includes a first roller brush and a second roller brush, the first shaft component has a support surface for contact support of the first brush member, at least a portion of the support surface of the first shaft component is incompressible, for example, the entire support surface of the first shaft component is incompressible.

In some embodiments, the second roller brush includes a second shaft component and a second brush member, the second shaft component having a support surface for contact support of the second brush member, at least a portion of the support surface of the second shaft component is incompressible, for example, the entire support surface of the second shaft component is incompressible.

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

In some embodiments, a support surface at an axial end of the second shaft component is compressible, and the remaining portion is incompressible.

In some embodiments, the support surface at an axial middle position of the first shaft component is compressible, and the remaining portion is incompressible.

In some embodiments, the support surface at an axial middle position of the second shaft component is compressible, and the remaining portion is incompressible.

In some embodiments, the compressible portion of the support surface of the first shaft component has a smaller area than the incompressible portion.

In some embodiments, the compressible portion of the support surface of the second shaft component has a smaller area than the incompressible portion.

In some embodiments, the support surface of at least a portion of the axial length of the first shaft component has both a compressible portion and an incompressible portion in the circumferential direction.

In some embodiments, the support surface of at least a portion of the axial length of the second shaft component has both a compressible portion and an incompressible portion in the circumferential direction.

In some embodiments, the support surface of the first shaft component has a shorter length in the axial direction of the first shaft component than the first brush member.

In some embodiments, the support surface of the second shaft component has a length in the axial direction of the second shaft component that is smaller than the second brush component. In some embodiments, the automatic cleaning device has two roller brushes at the same time, wherein the cylindrical component of one roller brush is compressible and the cylindrical component of the other roller brush is incompressible, and a one-way blocking structure can be provided for at least one of the two roller brushes as required; in some embodiments, only the cylindrical component can be provided for The structure is set for an incompressible roller brush because the compressible roller brush has a weaker need to solve the corresponding problem. Of course, the blocking structure can also be used for the compressible roller brush according to the specific material, especially when the material is relatively hard or the compressibility is relatively weak.

The roller brush and automatic cleaning device provided by the present disclosure are provided with a one-way blocking structure at the end of the first brush member near the cylindrical member, which can make the first brush member easy to deform in the opposite direction of the first rotation direction but not easy to deform in the first rotation direction. Therefore, when the automatic cleaning device is normally cleaning, the first brush member can provide a strong cleaning effect and is not easy to tilt and deform along the first rotation direction. When collecting dust, the first brush member is easy to deform in the opposite direction of the first rotation direction to prevent large particles of garbage from being clamped during dust collection, thereby improving cleaning efficiency and obtaining a better user experience.

In the related art, there are dual-roller brush models of automatic cleaning devices, such as sweeping robots, for which the front and rear roller brushes can enhance the cleaning ability of the automatic cleaning device, but the blades of the front and rear roller brushes do not interfere with each other, and there is always a predetermined size gap between the two roller brushes to suck the garbage on the operating surface into the air duct. The dust collection effect of the automatic cleaning device needs to be further improved.

The present disclosure provides an automatic cleaning device, comprising: a mobile platform, configured to automatically move on an operating surface; and a cleaning module, mounted on the mobile platform, configured to clean the operating surface, the cleaning module comprising: a first roller brush, arranged along a first direction perpendicular to the axis of the mobile platform, the first roller brush comprising a first long brush member; a second roller brush, arranged side by side with the first roller brush, the second roller brush comprising a second long brush member, and an air duct, arranged on a side of the first roller brush and the second roller brush away from the operating surface, configured to guide dust to be collected, wherein when the automatic cleaning device performs a cleaning operation, the first long brush member and the second long brush member interfere with each other to form an interference area, the interference area is configured to dynamically move along a predetermined direction, and the air duct inlet of the air duct is arranged downstream of the predetermined direction.

When the automatic cleaning device performs a cleaning operation, the first long brush member of the first roller brush and the second long brush member of the second roller brush of the cleaning module interfere with each other to form an interference area, so that the air intake passage between the two roller brushes is at least partially closed, reducing the opening size of the air intake passage, increasing the dust suction pressure, and 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 greatest suction force in the air intake passage between the two roller brushes also moves dynamically along the predetermined direction, and dust at all positions on the operating surface swept by the roller brush has the opportunity to be sucked into the air duct in turn with greater suction force and then enter the dust box. The air duct inlet of the air duct is set downstream of the predetermined direction to facilitate dust to enter the dust box through the air duct.

The optional embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

FIG27 is a schematic diagram of the structure of the cleaning module provided by some embodiments of the present disclosure from another perspective, FIG28 is a schematic diagram of the cross-sectional structure of the cleaning module provided by some embodiments of the present disclosure, and FIG29 is a schematic diagram of the structure of the first roller brush and the second roller brush provided by some embodiments of the present disclosure. Some embodiments of the present disclosure provide an automatic cleaning device, which includes a mobile platform 1000 and a cleaning module 5000. The mobile platform 1000 is configured to automatically move on the operating surface; the cleaning module 5000 is assembled on the mobile platform 1000 and is configured to perform a cleaning operation on the operating surface.

As shown in Fig. 27 to Fig. 29, 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.

The first roller brush 100, for example, a front brush, 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-rear axis X, and the first direction is for example the direction in which the transverse axis Y extends. The first roller brush 100 includes a first long brush member 131, i.e., a first long blade. The long blade is relatively long and thin. When processing a flat and hard cleaning surface such as a tile or a wooden floor, 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 long blade has a small contact force with the ground, and low noise in daily cleaning.

The second roller brush 200, such as a rear brush, is arranged side by side with the first roller brush 100 and also arranged along a first direction perpendicular to the axis of the moving platform. The second roller brush 200 includes a second long brush member 231, ie, a second long blade.

The air duct 5400 is disposed on a side of the first roller brush 100 and the second roller brush 200 away from the operating surface, and is configured to guide dust to be collected, for example, to guide dust to be collected into a dust box.

When the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 roll in opposite directions to perform a cleaning operation. Specifically, the first roller brush 100 rotates along a first rotation direction R1, which is, for example, a counterclockwise direction, and the second roller brush 200 rotates along a second rotation direction R2, which is, for example, a clockwise direction. The first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 can contact the ground to beat and roll up the garbage such as dust and hair that needs to be cleaned.

When the automatic cleaning device performs a cleaning operation, the first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 interfere with each other to form an interference area. For example, 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 at least partially interfere with each other. 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 or there is mutual overlap between the first brush member and the second brush member. Specifically, as shown in Figures 28 and 29, the first long brush member 131 and the second long brush member 231 interfere with each other between the first roller brush 100 and the second roller brush 200 to form an interference area. This causes the air intake passage between the two roller brushes to be at least partially closed. Reduce the opening size of the air intake channel, increase the suction pressure, and achieve better suction effect.

The first brush member and the second brush member rotate to a position close to each other 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 with the rotation of the two roller brushes. The interference area is configured to dynamically move along a predetermined direction, for example, to dynamically move along the direction in which the first roller brush 100 and the second roller brush 200 extend, so that dust at all positions of the operating surface swept by the roller brushes has the opportunity to be sucked into the air duct in sequence with greater suction force and then enter the dust box. The air duct inlet 5410 of the air duct 5400 is set downstream of the predetermined direction to facilitate dust to enter the dust box through the air duct.

In some embodiments, as shown in Figures 27 to 29, the first roller brush 100 includes a first shaft 110 and a first brush member 130. The first shaft 110 can be a rod-shaped structure, such as a long cylindrical structure. The two ends of the rod-shaped structure can be detachably mounted to the bottom of the device body of the automatic cleaning device directly or through a connector. In some embodiments, the first shaft 110 together with the first brush member 130 arranged on the first shaft 110 can be detachably mounted in a long strip groove structure at the bottom of the device body, and the long strip groove structure extends along the transverse axis Y direction.

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

The first brush member 130 is detachably mounted on the first shaft 110 , so as to facilitate 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 piece 131 .

The first cylindrical member 133 is configured to be sleeved on the first shaft 110 so that the first cylindrical member 130 is coaxial with the first shaft 110. The first cylindrical member 130 may 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 no relative movement occurs between the first shaft 110 and the first cylindrical member 130 during the rotation process. The first cylindrical member 130 may be, for example, a flexible member.

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

The second rolling brush 200 includes a second shaft 210 and a second brush member 230. The second shaft 210 It can be a rod-shaped structure, such as a long cylindrical structure. The two ends of the rod-shaped structure can be detachably mounted to the bottom of the device body of the automatic cleaning device directly or through a connecting piece. In some embodiments, the second shaft 210 together with the second brush member 230 arranged on the second shaft 210 can be detachably mounted to the long strip groove structure at the bottom of the device body, and the long strip groove structure extends along the transverse axis Y direction.

The axis of the second shaft 210 can be regarded as the rotation axis of the second roller brush 200. When the second roller brush 200 is installed on the main body of the automatic cleaning device, the driving system on the main body can drive the second shaft 210 to rotate, and the direction of rotation can be clockwise or counterclockwise. When the second shaft 210 rotates, it can drive other components arranged on the second shaft 210, such as the second brush member 230, to rotate together to achieve the purpose of cleaning.

The second brush member 230 is detachably mounted on the second shaft 210 , so as to facilitate 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 piece 231 .

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 the second shaft 210 and the second cylindrical member 230 do not move relative to each other during the rotation process. The second cylindrical member 230 may be, for example, a flexible member.

The second long brush member 231 is a second long blade, extending 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 with the same material.

In some embodiments, as shown in FIGS. 27 to 29, the number of the first long brush member 131 and the second long brush member 231 are both multiple, and the multiple first long brush members 131 correspond to the multiple second long brush members 231 one by one, and any one of the multiple first long brush members 131 is configured to interfere with the corresponding second long brush member 231. Specifically, as shown in FIGS. 28 and 29, the first roller brush 100 has five first long brush members 131, and the second roller brush 200 has five second long brush members 231. Each first long brush member 131 and its corresponding second long brush member 231 respectively interfere with each other when the first roller brush 100 and the second roller brush 200 rotate to a position close to each other, for example, when they are located between the first roller brush 100 and the second roller brush 200. The first long brush member 131 and its corresponding second long brush member 231 interfere with each other, for example, starting from one end, and 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 rotate further, the two are free from interference, and the cycle repeats.

In some embodiments, as shown in Figures 27 to 29, when the automatic cleaning device performs a cleaning operation, at any time, at least one pair of corresponding first long brush members 131 and second long brush members 231 interfere with each other. Specifically, Figure 29 shows a situation where two pairs of first long brush members 131 and second long brush members 231 interfere with each other at the same time. D1 shows a pair of first long brush members 131 and second long brush members 231 in an interference state at one end, and D2 shows another pair of first long brush members 131 and second long brush members 231 in an interference state at the other end. Such a setting can appropriately increase the area of the interference area, further reduce the opening size of the air intake channel, increase the suction pressure, and achieve a better suction effect.

In some embodiments, as shown in FIGS. 27 to 29, the plurality of first long brush members 131 are evenly distributed in the circumferential direction of the first cylindrical member 133. The plurality of second long brush members 231 are evenly distributed in the circumferential direction of the second cylindrical member 233. For example, the number of the plurality of first long brush members 131 is 5, and a first long brush member 131 is provided at intervals of 72 degrees in the circumferential direction of the first cylindrical member 133. For example, the number of the plurality of second long brush members 231 is 5, and a second long brush member 131 is provided at intervals of 72 degrees in the circumferential direction of the second cylindrical member 233.

In some embodiments, the first long brush member 131 extends from one end of the first cylindrical member 133 to the other end, and it does not extend along the axis of the first cylindrical member 133, but is arranged on the outer circumference of the first cylindrical member 133 in a winding manner, such as a spiral arrangement. Each first long brush member 131 covers a first predetermined angle on the circumference 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 first long brush members, where 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, and it does not extend along the axis of the second cylindrical member 233, but is arranged on the outer circumference of the second cylindrical member 233 in a winding manner, such as a spiral arrangement. Each second long brush member 231 covers a second predetermined angle on the circumference 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 second long brush members, where N is a positive integer and N≥2.

Such an arrangement enables at least two adjacent pairs of first long brush members 131 and second long brush members 231 to be in an interference state at the same time, so that the air intake passage between the two roller 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.

In some embodiments, as shown in FIG. 27 to FIG. 29, when the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 rotate in opposite directions, the first roller brush 100 rotates along a first rotation direction R1, the first rotation direction is, for example, counterclockwise, and the second roller brush 200 rotates along a second rotation direction R2, the first rotation direction is opposite to the second rotation direction, the second rotation direction is, for example, clockwise. In this way, the first roller brush 100 and the second roller brush 200 push the dust and other garbage picked up by the first long brush member 131 and the second long brush member 231 to between the first roller brush 100 and the second roller brush 200, so that it can enter the dust box through the air duct 5400.

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

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

Specifically, any first long brush member 131 and its corresponding second long brush member 231 interfere with each other as the first roller brush 100 and the second roller brush 200 rotate to positions close to each other, for example, when they are located between the first roller brush 100 and the second roller brush 200. The first long brush member 131 and its corresponding second long brush member 231, for example, begin to interfere with each other from one end of the combination formed by the first roller brush 100 and the second roller brush 200, as shown at D1 in FIG. 29. As the first roller brush 100 and the second roller brush 200 rotate further, the interference area between the two gradually moves along the transverse axis Y in FIG. 29 to the other end of the combination formed by the first roller brush 100 and the second roller brush 200, as shown at D2 in FIG. 29. As the first roller brush 100 and the second roller brush 200 rotate further, the two are out of interference, and this cycle repeats.

In some embodiments, as shown in FIGS. 27 to 29 , the first long brush member 131 tilts toward the second rotation direction R2 in the circumferential direction of the first cylindrical member 133 ; the second long brush member 231 tilts toward the first rotation direction R1 in the circumferential direction of the second cylindrical member 233 .

Fig. 30 is a schematic diagram of the structure of the first roller brush and the second roller brush provided in some embodiments of the present disclosure. As shown in Fig. 30, in some embodiments, the blade structure of the first roller brush and the second roller brush is different from the blade structure of the embodiment shown in Figs. 28 to 29.

The first long brush member 131 is spirally extended along the second rotation direction R2 from one end of the first cylindrical member 131 to the middle of the first cylindrical member 133 on the outer surface of the first cylindrical member 133, and then spirally extended along the first rotation direction R1 to the other end of the first cylindrical member 133. The first long brush member 131 is, for example, distributed in a V-shape on the outer circumference of the first cylindrical member 133, and the straight line connecting the two ends of the first long brush member 131 is, for example, parallel to the axis of the first cylindrical member 133. In some embodiments, the number of the first long brush members 131 is, for example, four, evenly distributed on the circumference of the first cylindrical member 133.

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

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

For any pair of first long brush members 131 and second long brush members 231, the interference area of the first long brush member 131 and its corresponding second long 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 toward the middle of the combination.

Specifically, any first long brush member 131 and its corresponding second long brush member 231 interfere with each other as the first roller brush 100 and the second roller brush 200 rotate to positions close to each other, for example, when they are located between the first roller brush 100 and the second roller brush 200. The first long brush member 131 and its corresponding second long brush member 231, for example, begin to interfere from both ends of the combination formed by the first roller brush 100 and the second roller brush 200, as shown at D3 and D4 in FIG. 30. As the first roller brush 100 and the second roller brush 200 rotate further, the interference area between the two gradually moves along the transverse axis Y in FIG. 30 to the middle of the combination formed by the first roller brush 100 and the second roller brush 200, as shown at D5 in FIG. 29. As the first roller brush 100 and the second roller brush 200 rotate further, the two are out of interference, and this cycle repeats. In this case, the air duct inlet 5410 of the air duct 5400 is arranged at the middle of the combination formed by the first roller brush 100 and the second roller brush 200, so as to facilitate dust to enter the dust box through the air duct.

In other embodiments, the interference area of the first long brush member 131 and the corresponding second long brush member 231 is configured to dynamically move from the middle of the combination of the first roller brush 100 and the second roller brush 200 toward the two ends of the combination. In this case, the air duct 5400 air duct inlet 5410 is set at the two ends of the combination of the first roller brush 100 and the second roller brush 200, so that dust can enter the dust box through the air duct.

In some embodiments, as shown in Figures 27 to 29, 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.

The short blades are relatively short and thick, and can provide Strong cleaning force. When cleaning flat and hard surfaces such as tiles and wooden floors, the short blades do not touch the ground. When cleaning carpets with a certain thickness, both the long blades and the short blades touch the carpet surface, and the relatively thick short blades play a key role in beating and peeling off the dust and hair hidden in the carpet, improving the cleaning effect.

In some embodiments, the first brush member 130 includes the first short brush member 132, 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, 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.

In some embodiments, as shown in Figures 27 to 29, 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.

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 larger deformation amount, and has good passing ability for large particles of garbage, while the hard core roller brush has a small deformation amount and a high cleaning ability.

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

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 the other may 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, and the first brush member and the second brush member interfere with each other to form an interference area.

In the related art, there are dual-roller brush models for automatic cleaning devices, such as sweeping robots. For such dual-roller brush models, the front and rear roller brushes can enhance the cleaning ability of the automatic cleaning device, but the blades of the front and rear roller brushes can only perform the function of cleaning the ground, and cannot clean the roller brush cavity. Moreover, the two roller brushes do not interfere with each other, and there is always a gap of a predetermined size between the two roller brushes, resulting in a poor dust collection effect.

The present disclosure provides an automatic cleaning device, comprising: a mobile platform, configured to automatically move on an operating surface; and a cleaning module, mounted on the mobile platform, configured to clean the operating surface, the cleaning module comprising: a first roller brush, arranged along a first direction perpendicular to the front and rear axis of the mobile platform, the first roller brush It includes a first brush member; a second roller brush, which is arranged side by side with the first roller brush, the second roller brush includes a second brush member, and a roller brush cavity, which is configured to accommodate the first roller brush and the second roller brush; wherein, when the first roller brush and the second roller brush rotate according to 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 according to their respective second working directions, the interference amount between the first brush member and the second brush member increases.

The present disclosure also provides an automatic cleaning device, comprising: a mobile platform configured to automatically move on an operating surface; and a cleaning module assembled on the mobile platform and configured to clean the operating surface, the cleaning module comprising: a first roller brush arranged along a first direction perpendicular to the front and rear axis of the mobile platform, the first roller brush comprising a first brush member; a second roller brush arranged side by side with the first roller brush, the second roller brush comprising 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 respectively rotate according to 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 respectively rotate according to 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.

The present invention provides two roller brushes rotating in different directions, so that when the automatic cleaning device performs cleaning operations, the first long brush member and the second long brush member interfere with each other, and the first long brush member and the second long brush member do not interfere with the inner wall of the roller brush chamber; when the automatic cleaning device performs dust collection operations, 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 roller brush chamber. Different functions can be achieved through forward and reverse rotation. Not only is the dust collection process less noisy and can collect more dust, but the inner wall of the roller brush chamber can also be scraped and cleaned when reversed, which is convenient for cleaning the inner wall of the roller brush chamber.

The following is explained in conjunction with Figures 27 to 31. The same structure is as described in the previous embodiment and is not repeated here. The cleaning module 5000 includes a first roller brush 100, a second roller brush 200 and an air duct 5400. The first roller brush 100 and the second roller brush 200 constitute the aforementioned roller brush 5300. The first roller brush 100 includes a first brush member, the first brush member includes a first long brush member 131 and a first short brush member 132, and the second roller brush 200 includes a second brush member, the second brush member includes a second long brush member 231 and a second short brush member 232.

The first roller brush 100, for example, a front brush, 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-rear axis X, and the first direction is for example the direction in which the transverse axis Y extends. The first roller brush 100 includes a first long brush member 131, i.e., a first long blade. The long blade is relatively long and thin. When processing a flat and hard cleaning surface such as a tile or a wooden floor, 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 long blade has a small contact force with the ground, and low noise in daily cleaning.

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

The air duct 5400 is disposed on a side of the first roller brush 100 and the second roller brush 200 away from the operating surface, and is configured to guide dust to be collected, for example, to guide dust to be collected into a dust box.

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

Among them, 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 rolling brush cavity 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 rolling brush cavity 5210.

During actual use, dust is sucked into the roller brush chamber 5210 through two roller brushes rotating in opposite directions, and the two roller brushes are in contact with each other through long blades, so that during use, the long blades of the two roller brushes in contact with each other form independent volumes to absorb dust. This design not only reduces noise, but also prevents dust and debris from being thrown out. Other sundries and garbage can also be sucked into the space between the two roller brushes, greatly improving the dust collection efficiency.

The cleaning device of this embodiment, as shown in FIG. 28 , has two arc-shaped cavity surfaces formed at the top of the roller brush cavity 5210, each cavity surface is close to a roller brush and does not contact the roller brush. When the automatic cleaning device performs cleaning operations, 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 is relatively small, so that the rotation is smooth and unobstructed, and the garbage is easily drawn in. When the automatic cleaning device performs dust collection operations, each roller brush rotates along the inclination direction of the long blade. The long blade reduces the inclination angle due to its flexibility and centrifugal force. For example, the long blade is in a state that is roughly perpendicular to the cylindrical member. At this time, the long blade can scrape or slap the cavity surface of the roller brush cavity 5210, so that the dust on the blade and the cavity surface can fall off, and the roller brush cavity 5210 and the long blade are self-cleaned.

As shown in Figure 28, during normal cleaning, the front and rear brushes roll inwards towards the middle, and the corresponding front brush rotates counterclockwise, while the rear brush rotates clockwise. When the front brush is tilted clockwise and the rear brush is tilted counterclockwise, the contact force on the roller brush during cleaning is exactly in the direction of the blade deformation. At this time, the sound of the contact with the ground is the softest, which helps to reduce noise. It can be seen from the tilting direction of the blade setting that when the front brush rotates forward, the blade is affected by When the main brush is reversed, the blades are deformed by the contact force in the direction of increasing the diameter (the rear brush blades are deformed clockwise), and can scrape the inner wall for self-cleaning (the blades rotate at high speed, and the centrifugal force will also increase the diameter).

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 first long brush member at the root portion 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 second long brush member at the root portion is less than the thickness of the top portion of the second long brush member. This ensures that the first long brush member 131 and/or the second long brush member 231 tilts to one side in the forward rotation state, and swings to the other side in the reverse rotation state to increase the slapping effect between the first long brush member 131 and/or the second long brush member 231 and the inner wall of the rolling brush chamber 5210.

In some embodiments, the first long brush member 131 has a first width from the root of the first long brush member to the top of the first long brush member, and the first width is greater than the distance between the first rolling brush 100 and the inner wall of the rolling brush cavity 5210; and/or the second long brush member 231 has a second width from the root of the second long brush member to the top of the second long brush member, and the second width is greater than the distance between the second rolling brush 200 and the inner wall of the rolling brush cavity 5210. Thus, when the rolling brush is in the reverse dust collection state, the first long brush member 131 and the second long brush member 231 have sufficient length to contact and beat the inner wall of the rolling brush cavity 5210.

When the automatic cleaning device performs a cleaning operation, the first roller brush 100 and the second roller brush 200 roll in opposite directions to perform a cleaning operation. Specifically, the first roller brush 100 rotates along a first rotation direction R1, which is, for example, a counterclockwise direction, and the second roller brush 200 rotates along a second rotation direction R2, which is, for example, a clockwise direction. The first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 can contact the ground to beat and roll up the garbage such as dust and hair that needs to be cleaned.

When the automatic cleaning device performs a cleaning operation, the first long brush member 131 of the first roller brush 100 and the second long brush member 231 of the second roller brush 200 interfere with each other to form an interference area. Specifically, as shown in Figures 28 and 29, the first long brush member 131 and the second long brush member 231 interfere with each other between the first roller brush 100 and the second roller brush 200 to form an interference area. The air intake passage between the two roller 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.

The interference area is configured to dynamically move along a predetermined direction, for example, to dynamically move along the direction in which the first roller brush 100 and the second roller brush 200 extend, so that dust at all positions of the operating surface cleaned by the roller brushes has the opportunity to be sucked into the air duct in sequence with 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, so that dust can enter the dust box through the air duct.

In some embodiments, the first roller brush 100 includes a first shaft 110 and a first brush member 130. The first shaft 110 may be a rod-shaped structure, such as a long cylindrical structure. Both ends of the rod-shaped structure may be detachably mounted to the bottom of the device body of the automatic cleaning device directly or through a connector. In some embodiments, the first shaft 110 together with the first brush member 130 disposed on the first shaft 110 may be detachably mounted to the long strip groove structure at the bottom of the device body, and the long strip groove structure extends along the transverse axis Y direction.

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

The first brush member 130 is detachably mounted on the first shaft 110 , so as to facilitate 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 piece 131 .

The first cylindrical member 133 is configured to be sleeved on the first shaft 110 so that the first cylindrical member 130 is coaxial with the first shaft 110. The first cylindrical member 130 may 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 no relative movement occurs between the first shaft 110 and the first cylindrical member 130 during the rotation process. The first cylindrical member 130 may be, for example, a flexible member.

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

The second roller 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 may be detachably mounted to the bottom of the device body of the automatic cleaning device directly or through a connector. In some embodiments, the second shaft 210 together with the second brush member 230 disposed on the second shaft 210 may be detachably mounted to the long strip groove structure at the bottom of the device body, and the long strip groove structure extends along the transverse axis Y direction.

The axis of the second shaft 210 can be regarded as the rotation axis of the second roller brush 200. When the second roller brush 200 is installed on the main body of the automatic cleaning device, the driving system on the main body can drive the second shaft 210 to rotate. The direction of rotation can be clockwise or counterclockwise. When the second shaft 210 rotates, it can drive other components arranged on the second shaft 210, such as the second brush member 230, to rotate together. Rotate to achieve the purpose of cleaning.

The second brush member 230 is detachably mounted on the second shaft 210 , so as to facilitate 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 piece 231 .

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 the second shaft 210 and the second cylindrical member 230 do not move relative to each other during the rotation process. The second cylindrical member 230 may be, for example, a flexible member.

The second long brush member 231 is a second long blade, extending 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 with the same material.

In some embodiments, the number of the first long brush member 131 and the second long brush member 231 is multiple, and the multiple first long brush members 131 correspond to the multiple second long brush members 231 one by one, and any one of the multiple first long brush members 131 is configured to interfere with the corresponding second long brush member 231. Specifically, as shown in Figures 28 to 30, 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 interfere with each other when the first roller brush 100 and the second roller brush 200 rotate to a position close to each other, for example, when they are located between the first roller brush 100 and the second roller brush 200. The first long brush member 131 and its corresponding second long brush member 231, for example, interfere with each other from one end, and 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 rotate further, the two are free from interference, and the cycle repeats.

In some embodiments, as shown in Figure 31, the end of at least one end of the first roller brush 100 is provided with a mounting portion 1400 for mounting the first roller brush 100, and the mounting portion 1400 is assembled with the first end portion 52111 of the front cleaning brush mounting position 5211; the mounting portion 1400 has a plurality of mounting teeth 141, and the angle between two adjacent tooth grooves is the same as or an integer multiple of the angle between two adjacent long blades 131 on the first roller brush 100. Similarly, the second roller brush also has a mounting 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 interfere with the long blades 231 of the second roller brush 200 accordingly.

In the related art, when the automatic cleaning device is cleaning the working surface, its roller brush rotates to sweep the surface. Dust can be removed by the air duct, so that it enters the dust box through the air duct. On the other hand, it can roll up the entangled materials on the operating surface, and the entangled materials gradually gather on both ends of the roller brush. When the entangled materials gathered on both ends of the roller brush increase, they need to be cleaned manually in time, otherwise it will easily affect the cleaning effect of the automatic cleaning equipment.

The present disclosure provides an automatic cleaning device, comprising: a mobile platform, configured to automatically move on an operating surface; and a cleaning module, mounted on the mobile platform and configured to clean the operating surface, the cleaning module comprising: a first roller brush, arranged along a first direction perpendicular to the front and rear axes of the mobile platform, and a second roller brush, arranged side by side with the first roller brush, wherein at least one end of the first roller brush has a first accommodating cavity, configured to accommodate a winding rolled up by the first roller brush, and the first accommodating cavity is composed of a flexible peripheral component and a first rigid internal component; at least one end of the second roller brush has a second accommodating cavity, configured to accommodate a winding rolled up by the second roller brush, and the second accommodating cavity is composed of a rigid peripheral component and a second rigid internal component.

The present invention provides a receiving cavity at the end of the roller brush, so that the entangled objects can be received in the receiving cavity, and there is no need to frequently clean the entangled objects on the roller brush, thereby reducing the burden on the user. The rigid cavity wall ensures the brush strength and cleaning power of the corresponding roller brush at the end, while ensuring sufficient receiving space that is not easily deformed and reduced, and the flexible cavity wall ensures the ability of large individual garbage to pass between the two cavities, effectively preventing jamming.

The optional embodiments of the present disclosure are described in detail below in conjunction with the accompanying drawings. The same structure is as described in the above embodiment, and will not be repeated here.

As shown in FIG32 , 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.

The first roller brush 100, for example, a front roller brush, is arranged along a first direction perpendicular to the front-rear axis X of the mobile platform, and the first direction is parallel to the lateral axis Y of the mobile platform. The second roller brush 200 is arranged side by side with the first roller brush 100, and the second roller brush 200 is for example a rear roller brush, which is also arranged along the first direction perpendicular to the front-rear axis X of the mobile platform.

In some embodiments, the first roller brush 100 is, for example, a soft roller brush, and its non-brush part can be compressed in a direction perpendicular to the axis of the first roller brush, so that larger garbage can be easily cleaned by the first roller brush. The second roller brush 200 is, for example, a hard roller brush, and its non-brush part can be incompressible in a direction perpendicular to the axis of the second roller brush, so that garbage cannot easily pass through the second roller brush to ensure the cleaning effect.

As shown in FIG. 32 , at least one end of the first roller brush 100 has a first accommodating cavity 101 configured to accommodate the winding object rolled up by the first roller brush 100. The first accommodating cavity 101 is composed of a flexible peripheral component and a first At least one end of the second roller brush 200 has a second accommodating cavity 201 configured to accommodate the wound object rolled up by the second roller brush 200 , and the second accommodating cavity 201 is composed of a rigid peripheral component and a second rigid internal component.

The second roller brush has a receiving cavity of the same structure as the first roller brush. In some embodiments, the second roller brush has a second receiving cavity configured to accommodate the winding of the second roller brush, and the components defining the second receiving cavity include a second rigid peripheral component. The second rigid peripheral component includes a portion of the second shaft, for example, the second rigid peripheral component includes the inner wall of the end of the second shaft. In some embodiments, the components defining the second receiving cavity also include a second rigid internal component, and the second rigid internal component includes at least a portion of the end member.

Both roller brushes are designed to accommodate entangled objects in the accommodating cavity, so there is no need to frequently clean the entangled objects on the roller brushes, thereby reducing the burden on users.

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

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

The first end member 120 is configured to be mounted on the first end 111, and the first rigid internal component includes a portion 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.

In some embodiments, the first end member 120 includes a guide sleeve 121, which is configured to accommodate the first end 111 so that the first end member 120 is installed on the first end 111, and the first rigid internal component includes at least a portion of the guide sleeve 121. Specifically, as shown in Figures 33 to 35, when the first end member 120 is installed on the first end 111, a portion of the first end member 120 surrounds at least a portion of the guide sleeve 121, and the two form the first accommodating cavity 101.

In some embodiments, as shown in Figures 33 to 35, the first end member 120 has an introduction portion 1211, and the introduction portion 1211 is arranged on the inner circumferential wall of the guide sleeve 121. The first end 111 includes a first matching portion 1111, and the introduction portion 1211 matches with the first matching portion 1111 to form a guiding matching structure so that the first end member 120 is installed to the first end 111.

In some embodiments, the introduction portion 1211 is disposed on the inner circumferential wall of the guide sleeve 121, and the introduction portion 1211 extends along the circumferential spiral of the guide sleeve 121 in the direction toward the first shaft 110. Accordingly, the first matching portion 1111 is The first matching portion 1111 should be arranged on the outer periphery of the first end portion 111, and the first matching portion 1111 extends spirally along the circumference of the first end portion 111 in the direction toward the first end member 110. In this way, the guide matching structure formed by the introduction portion 1211 and the first matching portion 1111 is a spiral guide matching structure. In some embodiments, one of the introduction portion 1211 and the first matching portion 1111 is a convex portion, and the other is a concave portion.

In some embodiments, as shown in FIGS. 33 to 35 , the first roller brush 100 further includes a first brush member 130 sleeved on the first shaft 110, the first brush member 130 including a first cylindrical member 131 and a first brush member 132, the first cylindrical member 131 sleeved on the first shaft 110 so that the first cylindrical member 131 and the first shaft are coaxial 132; the first brush member 132, such as a blade, 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 portion of the first cylindrical member 131.

In some embodiments, the first cylindrical member 131 and the first brush member 132 are both made of flexible material, such as colloid material, and are integrally formed.

As shown in Figures 33 to 35, 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 is, for example, coated on the outer periphery of the shaft body 113, while exposing at least a portion of the first end 111. The first cylindrical member 131 of the first brush member 130 is coated on the outer periphery of the flexible filler 120. The first roller brush 100 thus constructed is a soft roller brush.

In some embodiments, as shown in Figures 33 to 35, the end of the first cylindrical member 131 close to the first end cover member 120 has a first accommodating space 1311 opening toward the first end cover member 120, and the first accommodating space 1311 accommodates a portion of the first end cover member 120 and the first end 111, and a portion of the first accommodating space 1311 constitutes the first accommodating cavity 101.

Specifically, the first cylindrical member 131, the flexible filler 120 and the first shaft 110 are all coaxially arranged, and 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. 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 accommodating space 1311 opening toward 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 mounted to the first end portion 111, a portion of the first accommodating space 1311 constitutes the first accommodating cavity 101.

In some embodiments, as shown in FIGS. 33 to 35 , the first end cap member 120 has a first assembly structure 122 at the end far from the first shaft 110. The first assembly structure 122 is used to assemble the first roller brush 100 to the cleaning module. The first assembly structure 122 can be matched with the mounting position on the cleaning module. The distance between the opening of the accommodating space 1311 and the first assembly structure 122 is less than or equal to the distance between the first end 111 and the first assembly structure 122. In other words, when the first end cover member 120 is mounted on the first end 111, the end surface 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 surface of the first end 111 close to the first assembly structure 122.

In some embodiments, the first end cap member 120 includes a driving side end cap member and a driven side end cap member. When the first end cap member 120 is a driving side end cap member, for example, the first end cap member on the left side in Figures 33 to 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.

When the first end cover member 120 is a driven side end cover member, for example, the first end cover member on the right side in FIGS. 33 to 35 , the first assembly structure 122 is a bearing structure to facilitate the rotation of the first roller brush 100 .

In some embodiments, as shown in Figures 33 to 35, the first end cap member 120 further includes a first blocking structure 123, which is disposed between the assembly structure 122 and the guide sleeve 121 to prevent the winding from excessively extending away from the first brush member. The circumferential dimension of the first blocking structure 123 is greater than the circumferential dimension of the assembly structure 122 and the guide sleeve 121.

In some embodiments, as shown in Figures 33 to 35, the first accommodating space 1311 accommodates a portion of the guide sleeve 121, and the first blocking structure 123 is spaced a first preset distance from the opening of the first accommodating space 1311. This arrangement allows the winding to enter the first accommodating portion 101 during the rotation of the first roller brush 100.

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

In some embodiments, as shown in FIGS. 36 to 38 , the second roll brush 200 includes a second shaft 210 and a second end member 2200 .

The second shaft 210 has at least one second end 212. In some embodiments, both ends of the second shaft 210 have a second end 212, and the second end 212 has a fitting 213. The second end member 2200 is configured to be matched with the fitting 213 so that the second end member 2200 can be mounted on the second end 212 of the second shaft 210.

The second end portion 212 has a second accommodation space 2112 opened toward the second end member 2200, the fitting 213 is accommodated in the second accommodation space 2112, and the rigid peripheral component includes the second The second accommodating cavity 201 includes a portion of the second accommodating space 2112. In some embodiments, the second end member 2200 includes a guide rod 222, at least a portion of which extends into the second accommodating space 2112 so that the second end member 2200 is matched and installed with the matching piece 213, and the second rigid internal component includes at least a portion of the guide rod 222.

Specifically, when the second end member 2200 is mounted on the second end 212 of the second shaft 210, at least a portion of the guide rod 222 extends into the second accommodating space 2112 and is matched with the matching piece 213. For example, the end of the guide rod 222 close to the second shaft 210 is inserted into the matching piece 213 to form a matching connection. At this time, the outer wall of a portion of the guide rod 222 and the inner wall of the second end 212 of the second shaft 210 form the second accommodating cavity 201.

In some embodiments, the end of the guide rod 222 facing the second shaft rod 210 has a guide portion 2211, which is configured to form a rotational matching structure with the matching piece 213. Specifically, the guide portion 2211 extends along the circumferential spiral of the guide rod 222 in a direction toward the second shaft rod 210.

In some embodiments, as shown in FIGS. 36 to 38 , the second roller brush 200 further includes a second brush member 230 sleeved on the second shaft 210, and the second brush member 230 includes a second cylindrical member 231 and a second brush member 232. The second cylindrical member 231 is sleeved on the second shaft 210 so that the second cylindrical member 231 is coaxial with the second shaft 210. The second brush member 232, such as a blade, extends from the outer surface of the second cylindrical member 231 in a direction away from the second cylindrical member 231, and the axial length of the second cylindrical member 231 is less than or equal to the length of the second shaft 210. That is, the second cylindrical member 231 can completely cover the outer peripheral surface of the second shaft 210, and can also expose a portion of the outer peripheral surface of the second end of the second shaft 210. Such an arrangement ensures that the second cylindrical member does not collapse under pressure, thereby ensuring the strength and cleaning power of the brush member; preferably, the axial length of the second cylindrical member 231 is equal to the length of the second shaft 210, thereby ensuring sufficient cleaning width while ensuring strength and power.

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

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

In some embodiments, the second cylindrical member 231 and the second brush member 232 are both made of flexible material, such as colloid material, and are integrally formed.

In some embodiments, as shown in FIGS. 36 to 38, the second end cap member 220 has a second assembly structure 221 at the end far from the second shaft 210, and the second assembly structure 221 is used to assemble the second roller brush 200. The second assembly structure 221 can be mounted on the cleaning module to match the mounting position on the cleaning module. The distance between the opening of the second accommodating space 1311 and the first assembly structure 122 is less than or equal to the distance between the second brush member 230 and the second assembly structure 221. That is, when the second end cover member 220 is mounted on the second end 212, the end surface of the second cylindrical member 231 close to the second assembly structure 221 is flush with or further away from the second assembly structure 221 relative to the end surface of the second end 212 close to the second assembly structure 221.

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, such as the second end cap member on the left side in Figures 36 to 38, 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.

When the second end cover member 220 is a driven side end cover member, such as the second end cover member on the right side in Figures 36 to 38, the second assembly structure 222 is a bearing structure to facilitate the rotation of the second roller brush 200.

In some embodiments, as shown in Figures 36 to 38, the second end cap member 220 further includes a second blocking structure 225, which is disposed between the second assembly structure 221 and the guide rod 222 to prevent the winding from excessively extending away from the second brush member. The circumferential dimension of the second blocking structure 225 is greater than the circumferential dimension of the second assembly structure 221 and the guide rod 222.

In some embodiments, as shown in Figures 36 to 38, the second accommodating space 2112 accommodates a portion of the guide rod 222, and the second blocking structure 225 is spaced a second preset distance from the opening of the second accommodating space 2112. This arrangement allows the winding object to enter the second accommodating portion 201 during the rotation of the second roller brush 200.

As shown in Figure 37, in some embodiments, the number of guide portions 2211 of the two side end members is different, forming an anti-reverse installation design; in some embodiments, the number of guide portions of the drive side end cover member is corresponding to the number of second brush member groups, and the number of guide portions is usually set to a divisor of the number of second brush member groups to ensure the required alignment relationship of the blades after assembly; in some embodiments, the second assembly member 222 on the drive side is set in a manner that directly corresponds to the guide portion, that is, the second assembly structure is composed of N first repeatable unit shapes in the circumferential direction, N is the number of guide portions, and the guide portion has N second repeatable units along the circumferential direction, N is a positive integer, and N is greater than or equal to 2, the first or second repeatable units constitute a regular or irregular polygon, the regular polygon is a plum blossom-shaped N-gon, in some embodiments, the N first repeatable units of the first roller brush constitute a regular polygon, and the N first repeatable units in the second roller brush constitute a plum blossom shape.

The present disclosure provides an automatic cleaning device, comprising: a first roller brush, wherein the first roller brush comprises A first brush member; and a second roller brush, which is arranged approximately side by side with the first roller brush, and the second roller brush includes a second brush member; wherein the first brush member and the second brush member rotate to positions close to each other as the first roller brush and the second roller brush rotate, and the adjacent points of the first brush member and the second brush member dynamically move along a predetermined direction as the two roller brushes rotate.

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

In some embodiments, 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.

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

In some embodiments, 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.

In some embodiments, the first brush element and/or the second brush element is a spiral structure.

In some embodiments, 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 roller brush and the second roller brush as the first roller brush and the second roller brush rotate to positions close to each other.

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

In some embodiments, at least one of the first roll brush and the second roll brush further includes a first cylindrical member and a first shaft.

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.

In some embodiments, when the first roller brush and the second roller brush rotate, the first brush member and the second brush member overlap each other.

In some embodiments, the first tubular member is not compressible in the length direction of the first shaft.

In some embodiments, the first shaft is a hard rod.

In some embodiments, the first cylindrical member and the first shaft are substantially the same length.

In some embodiments, the first cylindrical member and the first shaft are coaxially disposed.

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

The first brush member and the second brush member rotate to positions close to each other 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 with the rotation of the two roller brushes, and the interference area is configured to dynamically move along the predetermined direction, so that dust at all positions of the operating surface cleaned by the roller brush is removed. There is a chance that the dust will be sucked into the air duct with greater suction force and then enter the dust box. It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims (15)

1. An automatic cleaning device, characterized in that it comprises:

   A first roller brush, the first roller brush comprising a first brush member; and

   A second roller brush, arranged substantially side by side with the first roller brush, the second roller brush comprising a second brush member;

   The first brush member and the second brush member rotate to positions 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.
2. The automatic cleaning device according to claim 1, wherein the automatic cleaning device further comprises an air duct inlet, and the air duct inlet is arranged downstream of the predetermined direction.
3. The automatic cleaning device according to claim 1 or 2, wherein the predetermined direction is a direction along the axial direction of the first roller brush or the second roller brush, pointing from both ends of the first roller brush or the second roller brush to the middle of the first roller brush or the second roller brush.
4. The automatic cleaning device according to claim 3, wherein the first brush member and/or the second brush member is a V-shaped structure.
5. The automatic cleaning device according to claim 1 or 2, wherein 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.
6. The automatic cleaning device according to claim 5, wherein the first brush member and/or the second brush member is a spiral structure.
7. The automatic cleaning device according to claim 1, wherein the first brush member and the second brush member are formed when the first roller brush and the second roller brush rotate to a position close to each other and the first brush member and the second brush member are located between the first roller brush and the second roller brush.
8. The automatic cleaning device according to any one of claims 1 to 7, wherein at least one of the first roller brush and the second roller brush is incompressible.
9. The automatic cleaning device according to any one of claims 1 to 7, wherein at least one of the first roller brush and the second roller brush further comprises a first cylindrical member and a first shaft.
10. The automatic cleaning device according to any one of claims 1 to 7, wherein 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.
11. The automatic cleaning device according to any one of claims 1 to 7, wherein when the first roller brush and the second roller brush rotate, the first brush member and the second brush member overlap each other.
12. The automatic cleaning device according to claim 9, wherein the first cylindrical member is not compressible in the length direction of the first shaft.
13. The automatic cleaning device according to claim 9 or 12, wherein the first shaft is a hard rod.
14. The automatic cleaning device according to any one of claims 9, 12, and 13, wherein the lengths of the first cylindrical member and the first shaft are substantially the same.
15. The automatic cleaning device according to any one of claims 9, 12-14, wherein the first cylindrical member and the first shaft are coaxially arranged.