Cleaning brush and automatic cleaning apparatus

Abstract

Provided in the present disclosure are a cleaning brush and an automatic cleaning apparatus. The cleaning brush comprises: a shaft rod which comprises a shaft rod body and a first end located on one side of the shaft rod body; and a first end member configured to be mounted to the first end, wherein the first end member has at least one first guide portion, the first end has at least one first mating portion, and the at least one first guide portion is matched with the at least one first mating portion to form a guide mating structure, so that the first end member can only be mounted to the first end in a circumferential assembly mode.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] The present disclosure claims priority to Chinese Patent Application No. 202223603508X filed on Dec. 30, 2022, which is incorporated herein by reference in its entirety as a part of the present disclosure.TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of self-propelled devices, and in particular to a cleaning brush and an automatic cleaning device.BACKGROUND

[0003] A cleaning brush is an important functional component of an automatic cleaning device. The existing cleaning brush has a small end cover, an end portion of a shaft rod of the cleaning brush is long and exposed outside the end cover, and the end cover is located outside a cylindrical member sleeving an outer periphery of a shaft cover of the cleaning brush, such that a winding object wound around the cylindrical member is likely to be wound to the end portion of the shaft rod from an end portion of the cylindrical member.SUMMARY

[0004] Some embodiments of the present disclosure provide a cleaning brush. The cleaning brush includes:

[0005] a shaft rod, including a shaft rod body and a first end portion located at one side of the shaft rod body; and

[0006] a first end portion member configured to be mounted to the first end portion,

[0007] where the first end portion member is provided with at least one first guiding portion, the first end portion is provided with at least one first fitting portion, and the at least one first guiding portion matches the at least one first fitting portion to form a guiding engagement structure, such that the first end portion member can only be mounted to the first end portion in a circumferential assembly manner.

[0008] In some embodiments, the at least one first guiding portion includes two first guiding portions, and the two first guiding portions are different in at least one of shape and size, such that the first end portion member can only be mounted to the first end portion in a circumferential assembly manner.

[0009] In some embodiments, the shaft rod further includes a second end portion located at the other side of the shaft rod body;

[0010] and

[0011] a second end portion member configured to be mounted to the second end portion, a second assembly structure being provided at a side of the second end portion member distal to the shaft rod,

[0012] where the second end portion member is provided with at least one second guiding portion, the second end portion is provided with at least one second fitting portion, and the at least one second guiding portion matches the at least one second fitting portion to form a guiding engagement structure, such that the second end portion member can be mounted to the second end portion in various circumferential assembly manners.

[0013] In some embodiments, the at least one second guiding portion includes two second guiding portions, and the two second guiding portions have the same shape and size, such that the second end portion member can be mounted to the second end portion in two circumferential assembly manners.

[0014] In some embodiments, the two first guiding portions have different sizes, and the size of the two second guiding portions is between the sizes of the two first guiding portions.

[0015] In some embodiments, the first end portion member includes a first guide sleeve, the first guide sleeve is configured to accommodate the first end portion, and the at least one first guiding portion is arranged on an inner peripheral wall of the first guide sleeve, and

[0016] the at least one first fitting portion is arranged on an outer periphery of the first end portion in one-to-one correspondence to the at least one first guiding portion.

[0017] In some embodiments, a first assembly structure is provided at a side of the first end portion member distal to the shaft rod, and the at least one first guiding portion spirally extends in a circumferential direction of the first guide sleeve in a direction away from the first assembly structure.

[0018] In some embodiments, one of the first guiding portion and the first fitting portion is a protruding portion, and the other is a recessed portion.

[0019] In some embodiments, an indicating portion is provided on an outer periphery of the first guide sleeve, and is configured to indicate a position of the first guiding portion on the outer periphery of the guide sleeve, such that the first guiding portion is aligned with the first fitting portion for assembly.

[0020] In some embodiments, the first guide sleeve is provided with a first locking portion, the first end portion is provided with a first lock matching portion, and the first locking portion is fitted to the first lock matching portion to lock the first end portion member to the first end portion.

[0021] In some embodiments, the first end portion member further includes a first guide shaft, and the first guide shaft extends along an axis of the first guide sleeve, and

[0022] a first guide hole is formed on an end surface of the first end portion distal to the second end portion, and the first guide hole is coaxial with the shaft rod and configured to accommodate the first guide shaft.

[0023] In some embodiments, the cleaning brush further includes a brush member coaxially arranged with the shaft rod, and the brush member includes:

[0024] a cylindrical member sleeving the outer periphery of the shaft rod; and

[0025] a plurality of brush components extending from an outer surface of the cylindrical member in a direction away from the cylindrical member, the plurality of brush components being evenly arranged in a circumferential direction of the cylindrical member.

[0026] In some embodiments, a first assembly structure is provided at a side of the first end portion member distal to the shaft rod, and an end surface of the first assembly structure distal to the shaft rod has a regular polygon shape that is a divisor of the number of the brush components.

[0027] In some embodiments, a flexible filler is filled between the brush member and the shaft rod, and the flexible filler wraps an outer periphery of the shaft rod body and exposes the first end portion and the second end portion.

[0028] In some embodiments, a first assembly structure is provided at a side of the first end portion member distal to the shaft rod, and the first end portion member further includes a first blocking structure arranged between the first assembly structure and the first guide sleeve, so as to prevent a winding object from excessively extending away from the brush member.

[0029] In some embodiments, a first assembly structure is provided at a side of the first end portion member distal to the shaft rod, the first assembly structure includes a transmission structure, and the second assembly structure includes a bearing structure.

[0030] Some embodiments of the present disclosure provide an automatic cleaning device. The automatic cleaning device includes the cleaning brush according to the foregoing embodiments.

[0031] The above solutions of the embodiments of the present disclosure may have the following beneficial effects.

[0032] In the cleaning brush of the present disclosure, a relatively fixed mounting direction at the driving end is ensured by providing the guiding member of the end portion member of the driving end with a unique circumferential assembly manner, which facilitates the controllability of the mounting angle of the roller brush. This is particularly beneficial in some scenarios having certain preset requirements for the orientation or alignment direction of sub-components of the roller brush, especially the blades, such as those scenarios where two roller brushes of the present disclosure are used to form a dual-brush system and have certain alignment requirements for their respective blades. Meanwhile, the guiding structure at the driven side is cleverly configured in an intermediate size, which not only ensures the close overall appearances of the components at two ends, but also effectively achieves fool-proofing, which is achieved bidirectionally in an extremely simple manner, thereby greatly improving the user experience.BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and are used in conjunction with the specification to explain the principles of the present disclosure. Apparently, the drawings in the following description are merely some embodiments of the present disclosure, and those of ordinary skill in the art may still derive other drawings from these drawings without creative efforts. In the drawings:

[0034] FIG. 1 is a schematic structural diagram of an automatic cleaning device according to an exemplary embodiment of the present disclosure;

[0035] FIG. 2 is a schematic structural diagram of the automatic cleaning device in FIG. 1 in a bottom view;

[0036] FIG. 3 is an exploded view of a three-dimensional structure of an example of a cleaning brush according to the present disclosure;

[0037] FIG. 4 is a diagram of a three-dimensional structure of an example of a first end portion member of the cleaning brush in FIG. 3;

[0038] FIG. 5 is a partial structural exploded view of the first end portion member and a shaft rod of the cleaning brush in FIG. 3 from an angle;

[0039] FIG. 6 is a partial structural exploded view of the first end portion member and the shaft rod of the cleaning brush in FIG. 3 from another angle;

[0040] FIG. 7 is an exploded view of a three-dimensional structure of the cleaning brush in FIG. 3 from another angle; and

[0041] FIG. 8 is a partial structural exploded view of a second end portion member and the shaft rod of the cleaning brush in FIG. 3 from an angle.DETAILED DESCRIPTION

[0042] For clearer descriptions of technical solutions and technical effects of the present disclosure, the present disclosure is further described in detail hereinafter with reference to the accompanying drawings. Apparently, the described embodiments are merely some embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

[0043] The terms used in the embodiments of the present disclosure are for the purpose of describing particular embodiments only and are not intended to be limiting to the present disclosure. As used in the embodiments and the appended claims of the present disclosure, the singular forms “a”, “an”, and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise, and “a plurality of” generally includes at least two.

[0044] It should be understood that the term “and / or” as used herein is merely a way to describe an association relationship between associated objects, indicating that three possible relationships may exist. For example, “A and / or B” can represent: the existence of A alone, the simultaneous existence of A and B, and the existence of B alone. In addition, the character “ / ” herein generally indicates an “or” relationship between the associated objects before and after the “ / ”.

[0045] It should be further noted that the terms “comprise”, “comprising”, “include”, “including”, or any other variation thereof, are intended to encompass a non-exclusive inclusion, such that a commodity or an apparatus including a list of elements includes not only those elements, but also other elements not explicitly listed or inherent to such commodity or apparatus. Without further limitation, an element defined by the phrase “comprising a / an . . . ” or “including a / an . . . ” does not exclude the presence of other identical elements in the commodity or apparatus including the element.

[0046] In order to further optimize the mounting structure of the end portion member and the end portion of the shaft rod and further optimize the stability of the mounting structure, the present disclosure provides a cleaning brush. A guiding engagement structure is formed by the guiding portion in the guide sleeve of the end portion member and the end portion of the shaft rod, and a lock engagement structure is formed by the locking portion in the guide sleeve and the end portion of the shaft rod. The guiding engagement structure and the lock engagement structure coordinate and cooperate with each other, such that guided mounting can be performed more effectively, a more effective guiding engagement structure can be achieved, a more effective fool-proof mounting structure can be achieved, the mounting simplicity and the stability of the mounting structure of the end portion member can be improved, and the mounting structure of the end portion member and the shaft rod can be optimized, thereby optimizing the overall structure of the cleaning brush.

[0047] The cleaning brush of the present disclosure is widely applicable, particularly in an automatic cleaning device. The automatic cleaning device may be a self-mobile robot such as a mopping robot, a sweeping robot, a sweeping and mopping robot, or a large commercial floor scrubber. In this case, the automatic cleaning device operates on an operating surface, and the operating surface may be any operating surface, such as a floor, a tabletop, a roof, or a platform. The self-propelled device may also be a window cleaning robot, the self-propelled device operates on an outer surface of a glass of a building, and the glass serves as the operating surface. The automatic cleaning device may further be a pipeline self-mobile robot, the automatic cleaning device operates on an inner surface of a pipeline, and the inner surface of the pipeline serves as the operating surface. These are purely for the purpose of illustration.

[0048] It should be noted that in the present disclosure, the left side of the drawing page is taken as a first side, and the right side of the drawing page is taken as a second side. The upper side of the drawing page is taken as an upper side, and the lower side of the drawing page is taken as a lower side. The up-down direction of the drawing page is taken as a vertical direction, and the left-right direction of the drawing page is taken as a horizontal direction.

[0049] Optional embodiments of the present disclosure will be described in detail hereinafter with reference to the accompanying drawings.

[0050] FIG. 1 is a schematic structural diagram of an automatic cleaning device according to an exemplary embodiment, and FIG. 2 is a schematic structural diagram of the automatic cleaning device in FIG. 1 in a bottom view. As shown in FIGS. 1 and 2, the automatic cleaning device may be a robot vacuum cleaner, a mopping / scrubbing robot, a window cleaning robot, or the like. The automatic cleaning device may include a mobile platform 1000, a sensing system 2000, a control system (not shown), a driving system 3000, a power system (not shown), a human-machine interaction system 4000, and a cleaning module 5000.

[0051] The mobile platform 1000 may be configured to automatically move in a target direction on an operating surface. The operating surface may be a surface to be cleaned by the automatic cleaning device. In some embodiments, the automatic cleaning device may be a mopping robot, the automatic cleaning device operates on the ground, and the ground serves as the operating surface. The automatic cleaning device may also be a window cleaning robot, the automatic cleaning device operates on an outer surface of a glass of a building, and the glass serves as the operating surface. The automatic cleaning device may further be a pipeline cleaning robot, the automatic cleaning device operates on an inner surface of a pipeline, and the inner surface of the pipeline serves as the operating surface. For the purpose of illustration only, the following description in the present application is illustrated by taking a mopping robot as an example.

[0052] In some embodiments, the mobile platform 1000 may be an autonomous mobile platform or a non-autonomous mobile platform. The autonomous mobile platform means that the mobile platform 1000 itself can automatically and adaptively make an operational decision based on an unexpected environmental input; and the non-autonomous mobile platform itself cannot adaptively make an operational decision based on an unexpected environmental input, but can execute a given procedure or operate according to a certain logic. Correspondingly, when the mobile platform 1000 is an autonomous mobile platform, the target direction may be autonomously determined by the automatic cleaning device; and when the mobile platform 1000 is a non-autonomous mobile platform, the target direction may be set systematically or manually.

[0053] The sensing system 2000 includes sensing apparatuses such as a position determining apparatus (not shown) located above the mobile platform 1000, a buffer (not shown) located in a forward part of the mobile platform 1000, a rotation sensor (not shown) and an ultrasonic sensor (not shown) located at the bottom of the mobile platform, an infrared sensor (not shown), a magnetometer (not shown), an accelerometer (not shown), a gyroscope (not shown), and an odometer (not shown), to provide various position information and motion status information of the machine to the control system.

[0054] For convenience of description, directions are defined as follows: The automatic cleaning device may be calibrated by defining the following three axes perpendicular to one another: a transverse axis Y, a front-rear axis X, and a vertical axis Z. A direction to which an arrow along the front-rear axis X points is marked as “rearward”, and a direction opposite to the direction of the arrow along the front-rear axis X is marked as “forward”. The transverse axis Y is substantially in a width direction of the automatic cleaning device. A direction of an arrow along the transverse axis Y is marked as “leftward”, and a direction opposite to the direction of the arrow along the transverse axis Y is marked as “rightward”. The vertical axis Z is a direction extending upward from the bottom surface of the automatic cleaning device. As shown in FIG. 1, a direction along the front-rear axis X is defined as a second direction, where the second direction is, for example, a forward direction or a rearward direction; and a direction perpendicular to the second direction in a horizontal plane is defined as a first direction, where the first direction is, for example, a leftward direction or a rightward direction.

[0055] The control system (not shown) is arranged on a main circuit board in the mobile platform 1000, and includes a computing processor, such as a central processing unit or an application processor, that communicates with a non-transitory memory, such as a hard disk, a flash memory, or a random access memory. The application processor is configured to receive environmental information sensed by a plurality of sensors and transmitted from the sensing system, draw a real-time map of an environment in which the automatic cleaning device is located by using a positioning algorithm, such as SLAM based on obstacle information fed back by the position determining apparatus, etc., autonomously determine a travel path based on the environmental information and the environmental map, and then control the driving system 3000 to perform operations such as traveling forward, traveling rearward, and / or steering according to the autonomously determined travel path. Further, the control system may also determine whether to activate the cleaning module 5000 to perform a cleaning operation based on the environmental information and the environmental map.

[0056] The driving system 3000 may execute a driving command based on specific distance and angle information, for example, x, y, and θ components, to steer the automatic cleaning device to run across the ground. The driving system 3000 includes a driving wheel assembly. The driving system 3000 may simultaneously control a left wheel and a right wheel. To more precisely control the movement of the machine, the driving system 3000 preferably includes a left driving wheel assembly and a right driving wheel assembly. The left and right driving wheel assemblies are symmetrically disposed along a transverse axis defined by the mobile platform 1000. To enable the automatic cleaning device to move more stably on the ground or to achieve stronger mobility, the automatic cleaning device may include one or more steering assemblies. Each steering assembly may be either a driven wheel or a driving wheel, and may adopt structural forms including but not limited to a universal wheel. The steering assembly may be located in front of the driving wheel assembly.

[0057] The power system (not shown) includes a rechargeable battery, for example, a nickel-hydrogen battery and a lithium battery. The rechargeable battery may be connected to a charging control circuit, a battery pack charging temperature detection circuit, and a battery undervoltage monitoring circuit. The charging control circuit, the battery pack charging temperature detection circuit, and the battery undervoltage monitoring circuit are then connected to a single-chip microcomputer control circuit. The main machine is charged through connection to a charging pile via charging electrodes disposed on the side or bottom of the machine body.

[0058] The human-machine interaction system 4000 includes a button on a host panel for a user to select a function, and may further include a display screen and / or an indicator light and / or a speaker, where the display screen, the indicator light, and the speaker show a current state of the machine or function options to the user, and may further include a mobile phone client program. For a path navigation type cleaning device, a mobile phone client may show a map of an environment in which the device is located and a location of the machine to the user, providing the user with richer and more user-friendly function options.

[0059] As shown in FIG. 2, 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 a dust suction port between the main brush module and the dust box, and then the garbage is sucked into the dust box by the gas with suction generated by the fan and passing through the dust box. The dust removal capacity of the sweeper may be characterized by a dust pickup efficiency (DPU) of the garbage. The DPU is affected by a wind force utilization rate of an air duct formed by the dust suction port, the dust box, the fan, the air outlet, and connecting components among the four, and is affected by a type and power of the fan, thereby posing a complex system design problem. Compared with a conventional plug-in vacuum cleaner, the improvement in the dust removal capacity is more significant for an automatic cleaning device with limited energy. The improvement in the dust removal capacity directly and effectively reduces the energy requirements. That is, a machine that can sweep 80 square meters of the ground on a single charge can be evolved to sweep 180 square meters or more on a single charge. In addition, a service life of the battery with a reduced quantity of charging times is greatly increased, such that a frequency of replacing the battery by the user is also reduced. More visually and importantly, the improvement in the dust removal capacity is the most obvious and important user experience, and the user will directly draw a conclusion on whether the sweeping / wiping is thorough.

[0060] As shown in FIG. 2, the automatic cleaning device includes a mobile platform 1000. The mobile platform 1000 is configured to move freely on an operating surface, a cleaning module 5000 is provided at the bottom of the mobile platform 1000, and the cleaning module 5000 is configured to clean the operating surface. The cleaning module 5000 includes a drive unit 5100, a roller brush framework 5200, and roller brushes 5300 assembled in the roller brush framework 5200. The drive unit 5100 provides a driving force for forward rotation or reverse rotation, and the driving force is applied 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.

[0061] As shown in FIG. 2, the roller brush framework 5200 is provided with a front cleaning brush mounting position 5211 and a rear cleaning brush mounting position 5212 for accommodating cleaning roller brushes. The front cleaning brush mounting position 5211 is provided with a first end 52111 and a second end 52112 opposite to the first end 52111. One end of the first roller brush 100 is engaged and fixed at the first end 52111, and the other end of the first roller brush is engaged and fixed at the second end 52112. In some embodiments, the front cleaning brush mounting position 5211 is a long-strip-shaped groove structure in the mobile platform, and the long-strip-shaped groove structure extends in the first direction. The rear cleaning brush mounting position 5212 is provided with a third end 52121 and a fourth end 52122 opposite to the third end 52121. In some embodiments, the rear cleaning brush mounting position 5212 has substantially the same structure as the front cleaning brush mounting position 5211. For example, the rear cleaning brush mounting position is also in a long-strip-shaped groove structure in the mobile platform, and the long-strip-shaped groove structure extends in the first direction. The second roller brush may be mounted in the long-strip-shaped groove of the rear cleaning brush mounting position 5212 through an opening of the long-strip-shaped groove structure. The two long-strip-shaped groove structures are parallel to each other in the second direction. The shape and size of the long-strip-shaped groove structure are not limited, as long as at least a portion of the first roller brush and at least a portion of the second roller brush are accommodated. The first end of the front cleaning brush mounting position 5211 and the third end of the rear cleaning brush mounting position 5212 are located at one side of the front-rear axis X, and the second end of the front cleaning brush mounting position 5211 and the fourth end of the rear cleaning brush mounting position 5212 are located at the other side of the front-rear axis X.

[0062] It should be noted that, in the following embodiments of the present disclosure, an example in which the long-strip-shaped groove structure proximal to the steering wheel on the automatic cleaning device is the front cleaning brush mounting position 5211 and the long-strip-shaped groove structure distal to the steering wheel is the rear cleaning brush mounting position 5212 is used for detailed description. Certainly, the reverse arrangement is also possible.

[0063] 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 regarded as a “front roller brush”, and the other cleaning roller brush is disposed at the rear cleaning brush mounting position 5212 and regarded as a “rear roller brush”. The front roller brush may be mounted in the front cleaning brush mounting position 5211 through the opening of the long-strip-shaped groove structure, and the rear roller brush may be mounted in the rear cleaning brush mounting position 5212 through the opening of the long-strip-shaped groove structure.

[0064] The cleaning brush in the present disclosure is illustrated hereinafter by using a roller brush, such as the front roller brush, as an example.

[0065] FIG. 3 is an exploded view of a three-dimensional structure of an example of a cleaning brush according to the present disclosure. FIG. 4 is a diagram of a three-dimensional structure of an example of an end portion member of the cleaning brush in FIG. 3. FIG. 5 is a diagram of a three-dimensional structure of the end portion member of the cleaning brush in FIG. 4 from another angle.

[0066] Referring to FIGS. 3 to 5, an embodiment of the present disclosure provides a cleaning brush 100. The cleaning brush 100 includes: a shaft rod 110 including a shaft rod body 113 and a first end portion 111 and a second end portion 112 located at two sides of the shaft rod body 113; and a first end portion member 120 configured to be mounted to the first end portion 111, where a first assembly structure 121 is provided at a side of the first end portion member 120 distal to the shaft rod 110. Specifically, the first assembly structure 121 is a transmission structure, and the first assembly structure 121 is connected to a driving mechanism of the cleaning device.

[0067] Specifically, the first end portion member 120 is provided with at least one first guiding portion 1221, the first end portion 111 is provided with at least one first fitting portion 1111, and the at least one first guiding portion 1221 matches the at least one first fitting portion 1111 to form a guiding engagement structure, such that the first end portion member 120 can only be mounted to the first end portion 111 in a circumferential assembly manner, that is, the first end portion member 120 and the shaft rod 110 have a single mounting direction when assembled.

[0068] The meaning of the circumferential assembly manner herein is as follows: Two assemblies are rotated by 360 degrees relative to each other, and if N assembly manners exist, it is determined that the two assemblies have N circumferential assembly manners, where N is greater than or equal to 1.

[0069] As shown in FIG. 4, the first end portion member 120 includes a first guide sleeve 122. The first guide sleeve 122 is configured to accommodate the first end portion 111. The at least one first guiding portion 1221 is arranged on an inner peripheral wall of the first guide sleeve 122 and is a protruding portion protruding inward from the inner peripheral wall of the first guide sleeve 122. The first end portion member 120 is mounted to the first end portion 111 located at the driving side.

[0070] Specifically, the at least one first guiding portion 1221 spirally extends in a circumferential direction of the first guide sleeve 122 in a direction away from the first assembly structure 121, and is specifically in a spiral shape spirally extending in a rotating manner along the inner peripheral wall, such that the first guiding portion 1221 has a rotation direction, for example, a clockwise (or counterclockwise) rotation direction around the axis z of the shaft rod 110.

[0071] It should be noted that, in this example, the first guiding portion 1221 is a protruding portion protruding from the inner peripheral wall of the first guide sleeve 122, but it is not limited thereto, as long as one of the first guiding portion 1221 and the first fitting portion 1111 is a protruding portion and the other is a recessed portion.

[0072] In the example of FIG. 4, the number of the first guiding portions 1221 is two, and the sizes of the two first guiding portions 1221 are different. By providing the two first guiding portions of different sizes, it can be effectively ensured that the first end portion member 120 and the end portion of the shaft rod at the driving side have only a single mounting direction, thereby controlling the mounting direction of the components such as the blades of the cleaning brush to be unique.

[0073] It should be noted that, in this example, the number of the first guiding portions 1221 is two, but it is not limited thereto. In other examples, the number of the first guiding portions 1221 may also be three or more. The above descriptions are only optional examples for illustration and should not be construed as limiting the present disclosure.

[0074] As can be seen from FIG. 5, the first fitting portions 1111 corresponding to the first guiding portions 1221 are provided on the outer periphery of the first end portion 111 of the shaft rod 110. In this example, two first fitting portions 1111 are arranged on the outer periphery of the first end portion 111, and the two first fitting portions 1111 are in one-to-one correspondence to the two first guiding portions 1221, respectively. Each first fitting portion 1111 is a groove portion recessed inward from the outer peripheral surface of the first end portion 111. The first guiding portion 1221 matches the first fitting portion 1111 to form a guiding engagement structure, such that the first end portion member 120 can only be mounted to the first end portion 111 in a circumferential assembly manner.

[0075] By adding two first guiding portions of different sizes to the inner peripheral wall of the first guide sleeve, guided mounting can be performed more effectively, and the first end portion member can only be mounted to the first end portion in a circumferential assembly manner, which can improve the mounting simplicity of the end portion member and the stability of the mounting structure.

[0076] Optionally, an indicating portion 1223 (referring to FIG. 4) is provided on the outer periphery of the first guide sleeve 122. The indicating portion is configured to indicate a position of the first guiding portion 1221 on the outer periphery of the first guide sleeve 122, so as to indicate a rotational assembly direction in which the first end portion member 120 is mounted to the first end portion 111 of the shaft rod 110, such that the first guiding portion 1221 is aligned with the first fitting portion 1111 for assembly.

[0077] As shown in FIGS. 4 to 6, the first guide sleeve 122 is provided with a first locking portion 1222, for example, a groove portion recessed inward from an outer peripheral surface of the first guide sleeve 122. Correspondingly, the first end portion 111 is provided with a first lock matching portion 1112. The first locking portion 1222 is fitted to the first lock matching portion 1112 to lock the first end portion member 120 to the first end portion 111.

[0078] Referring to FIGS. 5 and 6, the first end portion member 120 further includes a first guide shaft 123. The first guide shaft 123 extends along an axis of the first guide sleeve 122. A first guide hole 1113 is formed on an end surface of the first end portion 111 distal to the second end portion 112, and the first guide hole 113 is coaxial with the shaft rod 110 and configured to accommodate the first guide shaft 123.

[0079] As shown in FIGS. 5 and 6, an end surface of the first assembly structure 121 distal to the shaft rod has a regular polygon shape, and the number of sides of the regular polygon is a divisor of the number of brush components. In other words, the number of sides of the regular polygon of an outer end surface of the first end portion member has a corresponding relationship with the number of sets of brush components of the automatic cleaning device. For example, the number N of sides of the regular polygon is a divisor of the number of sets (for example, 4 sides and 8 sets of blades; and for another example, 4 sides and 4 sets of blades). As such, it can be ensured that after the cleaning brush is mounted to the main machine of the automatic cleaning device in N directions, the components such as the blades in the brush component of the cleaning brush have the same orientation.

[0080] It should be noted that, in this embodiment, the sides of the regular polygon are N straight-line sides, but it is not limited thereto. In other embodiments, the sides may be adjusted to, for example, curved sides, or a combination of straight-line sides and curved sides. In addition, in other examples, the regular polygon shape may be adaptively changed based on the number of brush components.

[0081] In the example of FIG. 3, the cleaning brush 100 further includes a brush member 130 coaxially arranged with the shaft rod 110. The brush member 130 includes: a cylindrical member 131 sleeving an outer periphery of the shaft rod; and a plurality of brush components 132. The plurality of brush components 132 extend from an outer surface of the cylindrical member in a direction away from the cylindrical member 131, and the plurality of brush components 132 are evenly arranged in a circumferential direction of the cylindrical member.

[0082] Specifically, the brush components 131 include a first brush component. For example, the first brush component is V-shaped and includes five sets of first brush components.

[0083] It should be noted that, in other examples, the brush components may further include a second brush component, a third brush component, etc., and the second brush component and the third brush component have different shapes, lengths, and the like from the first brush component. In addition, different sets of brush components generally have the same structure. Each set of brush components may include one or more blades. When a plurality of blades are included, structures of the plurality of blades are often not exactly the same.

[0084] Specifically, a flexible filler (not shown) is filled between the brush member 130 and the shaft rod 110, and the flexible filler wraps the outer periphery of the shaft rod body and exposes the first end portion and the second end portion.

[0085] Further, the first end portion member 120 further includes a first blocking structure 125 arranged between the first assembly structure 121 and the first guide sleeve 122, so as to prevent the winding object from excessively extending away from the brush member and prevent the winding object from excessively extending away from the cleaning brush. The first blocking structure 125 is, for example, at least one blocking ring, and two blocking rings in this example. By providing the blocking structure, the winding object such as garbage is wound around the blocking structure of the first end portion member, such that the winding object is effectively prevented from being wound around the shaft rod, and the winding object can be removed directly along with the removal of an end cover member when the end portion member is detached.

[0086] A guiding engagement structure is formed by the first guiding portion in the first guide sleeve of the first end portion member and the end portion of the shaft rod at the driving side, and a lock engagement structure is formed by the first locking portion on the first guide sleeve being fitted to the first lock matching portion of the end portion of the shaft rod. The guiding engagement structure and the lock engagement structure coordinate and cooperate with each other, achieving a more effective mounting structure, and further optimizing the mounting structure of the end portion member and the shaft rod, thereby optimizing the overall structure of the cleaning brush.

[0087] FIG. 7 is an exploded view of a three-dimensional structure of the cleaning brush in FIG. 3 from another angle; and FIG. 8 is a partial structural exploded view of a second end portion member and the shaft rod of the cleaning brush in FIG. 3 from an angle.

[0088] As shown in FIGS. 7 and 8, the cleaning brush 100 further includes a second end portion member 140. The second end portion member 140 is located at the driven side and is mounted to the second end portion 112 of the shaft rod 110. A second assembly structure 141 (specifically, a bearing structure) is provided at a side of the second end portion member 140 distal to the shaft rod 110. The second assembly structure 141 is rotatable relative to the shaft rod and rotatably connected to another structure (for example, a machine body) of the cleaning device through the second assembly structure 141.

[0089] As shown in FIGS. 7 and 8, the second end portion member 140 is provided with at least one second guiding portion 1421, the second end portion 112 is provided with at least one second fitting portion 1121, and the at least one second guiding portion 1421 matches the at least one second fitting portion 1121 to form a guiding engagement structure, such that the second end portion member 140 can be mounted to the second end portion in various circumferential assembly manners.

[0090] Further, the second guiding portion 1421 spirally extends in a circumferential direction of the second guide sleeve 142 in a direction away from the second assembly structure 141, and is specifically in a spiral shape spirally extending in a rotating manner along the inner peripheral wall, such that the second guiding portion 1421 has a rotation direction, for example, a clockwise (or counterclockwise) rotation direction around the axis z of the shaft rod 110, thereby forming a second guiding direction. In this example, the second guiding direction is the same as the first guiding direction.

[0091] It should be noted that, in this example, the first guiding direction and the second guiding direction are the same, but it is not limited thereto. In other examples, the rotation direction of the first guiding portion may also be, for example, non-spiral or linear. In addition, in other examples, the second guiding direction may be different from the first guiding direction. The above descriptions are only optional examples for illustration and should not be construed as limiting the present disclosure.

[0092] As shown in FIG. 8, the at least one second guiding portion 1421 includes two second guiding portions 1421, and the two second guiding portions 1421 have the same shape and size, such that the second end portion member can be mounted to the second end portion 112 in two circumferential assembly manners.

[0093] Preferably, when the first guiding portions 1221 and the second guiding portions 1421 have the same guiding direction, the two first guiding portions 1221 have different sizes (correspondingly, the first fitting portion 1111 and the second fitting portion 1121 have different sizes), the two second guiding portions 1421 have the same size, and the size of the second guiding portions 1421 is between the sizes of the two first guiding portions 1221.

[0094] The size of the two second guiding portions at the driven end is between the sizes of the two first guiding portions at the driving side, such that it can be ensured that the second end portion member can be freely mounted at multiple angles, and it can be ensured that the end portion members at two sides are not mounted upside down, which can effectively ensure a correct orientation of the components such as the blades after the cleaning brush is mounted.

[0095] It should be noted that the number of the second guiding portions may also be three or more in other examples. The above descriptions are only optional examples for illustration and should not be construed as limiting the present disclosure. In addition, for the first end portion member and the second end portion member, it is preferable to provide two first guiding portions of different sizes at the driving side, because a requirement is presented for the mounting angle at the driving side, and the second end portion member at the driven side does not need a design with different sizes, because the second assembly structure (specifically, the bearing structure) at the driven side can rotate freely relative to the shaft rod. After the bearing structure is assembled to the machine body of the automatic cleaning device, the rest of the cleaning brush is allowed to rotate freely relative to the bearing structure. No strict requirement is presented for the assembly angle at the driven side. Therefore, in other examples, the second guiding portions may have the same size.

[0096] More effective guiding engagement structures can be achieved by forming guiding engagement structures between the first guiding portion 1221 and the first fitting portion 1111 and between the second guiding portion 1421 and the second fitting portion 1121. Due to the different sizes of the two first guiding portions 1221 and the different size of the second guiding portions from the first guiding portions, the first end portion member can only be mounted to the first end portion in a circumferential assembly manner, and the second end portion member can be mounted to the second end portion in various circumferential assembly manners. In this way, mounting angles of the first end portion member and the second end portion member to the shaft rod can be accurately determined, thereby achieving a more effective mounting structure.

[0097] Further, an outer periphery of the second guide sleeve 142 of the second end portion member 140 is provided with

[0098] a second locking portion 1422, for example, a groove portion recessed inward from an outer peripheral surface of the second guide sleeve 142, and the second locking portion 1422 may also be a through hole penetrating the second guide sleeve 142. Correspondingly, the second end portion 112 is provided with a first lock matching portion 1123. The second locking portion 1422 is fitted to the second lock matching portion 1123 to lock the second end portion member 140 to the second end portion 112 to form a lock engagement structure.

[0099] As shown in FIG. 8, the second end portion member 140 further includes a second guide shaft 144. The second guide shaft 144 extends along an axis of the second guide sleeve 142. A second guide hole (not shown) is formed on an end surface of the second end portion 112 distal to the first end portion 111, and the second guide hole is coaxial with the shaft rod 110 and configured to accommodate the second guide shaft 144.

[0100] Further, the second end portion member 140 further includes a second blocking structure 145. The second blocking structure 145 is arranged at a side of the second guide sleeve 142 distal to the shaft rod 110.

[0101] Specifically, an outer diameter of the blocking structure 145 is greater than an outer diameter of the second guide sleeve 142. By providing the blocking structure on the second end portion member, the winding object such as garbage is wound around the blocking structure of the second end portion member, such that the winding object is effectively prevented from being wound around the shaft rod, and the winding object can be removed directly along with the removal of an end cover member when the end portion member is detached.

[0102] Optionally, the second guide sleeve 142 may be further provided with an indicating portion 1423 configured to indicate a position of the second guiding portion 1421 on the outer periphery of the second guide sleeve 142, so as to indicate a rotational assembly direction in which the second end portion member 140 is mounted to the shaft rod 110 and the second end portion 112, such that the second guiding portion is aligned with the second fitting portion for assembly.

[0103] Further, the second assembly structure 141 of the second end portion member 140 is configured in a polygon shape corresponding to the number of the brush components. In this example, the polygon shape of the outer end surface of the second assembly structure 141 is a pentagon formed by a combination of straight lines and curved lines.

[0104] Preferably, the regular polygon shape of the outer end surface of the first end portion member 120 is different from the polygon shape of the outer end surface of the second assembly structure 141, such that the outer end surfaces of the first end portion member and the second end portion member are of different shapes, making it easier to distinguish the two end portions and improving the convenience of mounting.

[0105] In the cleaning brush of the present disclosure, a relatively fixed mounting direction at the driving end is ensured by providing the guiding member of the end portion member of the driving end with a unique circumferential assembly manner, which facilitates the controllability of the mounting angle of the roller brush. This is particularly beneficial in some scenarios having certain preset requirements for the orientation or alignment direction of sub-components of the roller brush, especially the blades, such as those scenarios where two roller brushes of the present disclosure are used to form a dual-brush system and have certain alignment requirements for their respective blades.

[0106] In the cleaning brush of the present disclosure, a guiding engagement structure is formed by the guiding portion in the inner wall of the guide sleeve of the end portion member and the end portion of the shaft rod, and a lock engagement structure is formed by the locking portion at the outer periphery of the guide sleeve and the end portion of the shaft rod. The guiding engagement structure and the lock engagement structure coordinate and cooperate with each other, such that guided mounting can be performed more effectively, a more effective guiding engagement structure can be achieved, a more effective fool-proof mounting structure can be achieved, the mounting simplicity and the stability of the mounting structure of the end portion member can be improved, and the mounting structure of the end portion member and the shaft rod can be optimized, thereby optimizing the overall structure of the cleaning brush.

[0107] In addition, due to the different sizes of the two first guiding portions and the different size of the second guiding portions from the first guiding portions, the first end portion member can only be mounted to the first end portion in a circumferential assembly manner, and the second end portion member can be mounted to the second end portion in various circumferential assembly manners. In this way, mounting angles of the first end portion member and the second end portion member to the shaft rod can be accurately determined, thereby achieving a more effective mounting structure.

[0108] In addition, the indicating portions are provided on the outer peripheries of the first guide sleeve and the second guide sleeve to indicate the rotational assembly directions in which the first end portion member and the second end portion member are mounted to the first end portion and the second end portion of the shaft rod, thereby effectively ensuring the alignment of the first guiding portion and the first fitting portion for assembly, and effectively ensuring the alignment of the second guiding portion and the second fitting portion for assembly.

[0109] In addition, the number of sides of the regular polygon of the outer end surface of the first end portion member and the divisor of the number of sets of the brush components of the automatic cleaning device can ensure that after the cleaning brush is mounted to the main machine of the automatic cleaning device in N directions, the components such as the blades in the brush component of the cleaning brush have the same orientation.

[0110] In addition, by providing the blocking structure on the end portion member, the winding object is directly wound around the blocking structure of the end portion member, such that the winding object can be effectively prevented from being wound around the shaft rod.

[0111] The present disclosure further provides another embodiment following the above embodiments. The embodiment of the present disclosure further provides an automatic cleaning device. The automatic cleaning device includes the cleaning brush according to the foregoing embodiments. Interpretations based on the same name meanings are the same as those in the foregoing embodiments, and have the same technical effects as those in the foregoing embodiments, which are not repeated herein.

[0112] Finally, it should be noted that the embodiments in the specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and reference should be made to each other for the same or similar parts. Since the system or apparatus disclosed in the embodiment corresponds to the method disclosed in the embodiment, the description is relatively simple, and reference may be made to the description of the method part.

[0113] The above embodiments are only used to illustrate the technical solutions of the present disclosure, but not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present disclosure.

Claims

1. A cleaning brush, comprising:a shaft rod, comprising a shaft rod body and a first end portion located at a first side of the shaft rod body; anda first end portion member configured to be mounted to the first end portion,wherein the first end portion member is provided with at least one first guiding portion, the first end portion is provided with at least one first fitting portion, and the at least one first guiding portion matches the at least one first fitting portion to form a guiding engagement structure, such that the first end portion member is only mounted to the first end portion in a circumferential assembly manner.

2. The cleaning brush according to claim 1, wherein the at least one first guiding portion comprises two first guiding portions, and the two first guiding portions are different in at least one of shape and size, such that the first end portion member is only mounted to the first end portion in a circumferential assembly manner.

3. The cleaning brush according to claim 2, wherein the shaft rod further comprises a second end portion located at a second side of the shaft rod body;anda second end portion member configured to be mounted to the second end portion, a second assembly structure being provided at a side of the second end portion member distal to the shaft rod,wherein the second end portion member is provided with at least one second guiding portion, the second end portion is provided with at least one second fitting portion, and the at least one second guiding portion matches the at least one second fitting portion to form a guiding engagement structure, such that the second end portion member is mounted to the second end portion in a plurality of circumferential assembly manners.

4. The cleaning brush according to claim 3, wherein the at least one second guiding portion comprises two second guiding portions, and the two second guiding portions have the same shape and size, such that the second end portion member is mounted to the second end portion in two circumferential assembly manners.

5. The cleaning brush according to claim 4, wherein the two first guiding portions have different sizes, and the size of the two second guiding portions is between the sizes of the two first guiding portions.

6. The cleaning brush according to claim 3, wherein the first end portion member comprises a first guide sleeve, the first guide sleeve is configured to accommodate the first end portion, and the at least one first guiding portion is arranged on an inner peripheral wall of the first guide sleeve, andthe at least one first fitting portion is arranged on an outer periphery of the first end portion in one-to-one correspondence to the at least one first guiding portion.

7. The cleaning brush according to claim 6, wherein a first assembly structure is provided at a side of the first end portion member distal to the shaft rod, and the at least one first guiding portion spirally extends in a circumferential direction of the first guide sleeve in a direction away from the first assembly structure.

8. The cleaning brush according to claim 6, wherein one of the first guiding portion and the first fitting portion is a protruding portion, and the other is a recessed portion.

9. The cleaning brush according to claim 6, wherein an indicating portion is provided on an outer periphery of the first guide sleeve, and is configured to indicate a position of the first guiding portion on the outer periphery of the guide sleeve, such that the first guiding portion is aligned with the first fitting portion for assembly.

10. The cleaning brush according to claim 6, wherein the first guide sleeve is provided with a first locking portion, the first end portion is provided with a first lock matching portion, and the first locking portion is fitted to the first lock matching portion to lock the first end portion member to the first end portion.

11. The cleaning brush according to claim 6, wherein the first end portion member further comprises a first guide shaft, and the first guide shaft extends along an axis of the first guide sleeve, anda first guide hole is formed on an end surface of the first end portion distal to the second end portion, and the first guide hole is coaxial with the shaft rod and configured to accommodate the first guide shaft.

12. The cleaning brush according to claim 3, further comprising a brush member coaxially arranged with the shaft rod, the brush member comprising:a cylindrical member sleeving the outer periphery of the shaft rod; anda plurality of brush components extending from an outer surface of the cylindrical member in a direction away from the cylindrical member, the plurality of brush components being evenly arranged in a circumferential direction of the cylindrical member.

13. The cleaning brush according to claim 12, wherein a first assembly structure is provided at a side of the first end portion member distal to the shaft rod, and an end surface of the first assembly structure distal to the shaft rod has a regular polygon shape that is a divisor of the number of the brush components.

14. The cleaning brush according to claim 12, wherein a flexible filler is filled between the brush member and the shaft rod, and the flexible filler wraps an outer periphery of the shaft rod body and exposes the first end portion and the second end portion.

15. The cleaning brush according to claim 11, whereina first assembly structure is provided at a side of the first end portion member distal to the shaft rod; andthe first end portion member further comprises a first blocking structure arranged between the first assembly structure and the first guide sleeve, so as to prevent a winding object from excessively extending away from the brush member.

16. The cleaning brush according to claim 3, wherein a first assembly structure is provided at a side of the first end portion member distal to the shaft rod,wherein the first assembly structure comprises a transmission structure, and the second assembly structure comprises a bearing structure.

17. An automatic cleaning device, comprising a cleaning brush;wherein the cleaning brush comprises:a shaft rod, comprising a shaft rod body and a first end portion located at a first side of the shaft rod body; anda first end portion member configured to be mounted to the first end portion,wherein the first end portion member is provided with at least one first guiding portion, the first end portion is provided with at least one first fitting portion, and the at least one first guiding portion matches the at least one first fitting portion to form a guiding engagement structure, such that the first end portion member is only mounted to the first end portion in a circumferential assembly manner.

18. The automatic cleaning device according to claim 17, wherein the at least one first guiding portion comprises two first guiding portions, and the two first guiding portions are different in at least one of shape and size, such that the first end portion member is only mounted to the first end portion in a circumferential assembly manner.

19. The automatic cleaning device according to claim 18, wherein the shaft rod further comprises a second end portion located at a second side of the shaft rod body;anda second end portion member configured to be mounted to the second end portion, a second assembly structure being provided at a side of the second end portion member distal to the shaft rod,wherein the second end portion member is provided with at least one second guiding portion, the second end portion is provided with at least one second fitting portion, and the at least one second guiding portion matches the at least one second fitting portion to form a guiding engagement structure, such that the second end portion member is mounted to the second end portion in a plurality of circumferential assembly manners.

20. The automatic cleaning device according to claim 19, wherein the at least one second guiding portion comprises two second guiding portions, and the two second guiding portions have the same shape and size, such that the second end portion member is mounted to the second end portion in two circumferential assembly manners.

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