Cleaning brushes and automatic cleaning equipment

Abstract

The present disclosure provides a cleaning brush (200) and an automatic cleaning device, the cleaning brush (200) including a rigid shaft (210) having axially opposite first and second ends (211 and 212), and a brush member (230) coaxially fitted on the outside of the rigid shaft (210), with or without a rigid filler provided between the brush member (230) and the rigid shaft (210).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This disclosure claims priority to Chinese Patent Application No. 202223604724.6, filed on December 30, 2022, the disclosure of which is hereby incorporated by reference in its entirety as part of this disclosure. [Technical Field]

[0002] FIELD OF THE DISCLOSURE The present disclosure relates to the field of self-propelled equipment, and in particular to cleaning brushes and automatic cleaning equipment. [Background technology]

[0003] The cleaning brush is an important functional component of a cleaning device. Conventional cleaning brush end caps are relatively small, resulting in a longer exposed shaft end. The end caps are also located outside the tubular member fitted around the cleaning brush shaft cap. This means that the wrapping material around the tubular member is likely to wrap from the end of the tubular member to the end of the shaft. Conventional cleaning brush end cap structures still have the problem of the wrapping material extending excessively toward the end of the cleaning brush, which can lead to the motor's output power end and bearing end becoming stuck. Furthermore, there is still significant room for improvement in many areas, including the end cap structure of the cleaning brush, the attachment structure between the end cap structure and the shaft, and the foolproof installation of the end caps on both sides of the cleaning brush. Summary of the Invention

[0004] The present disclosure aims to provide a cleaning brush and an automatic cleaning device that can solve the problem of low cleaning performance of automatic cleaning devices during cleaning, as follows:

[0005] Some embodiments of the present disclosure provide a cleaning brush, the cleaning brush comprising: a rigid shaft having axially opposed first and second ends; a brush member coaxially fitted on the outside of the rigid shaft; Here, a rigid filler or no filler is provided between the brush member and the rigid shaft.

[0006] In some embodiments, the brush member comprises: The flexible tubular member is fitted onto the outer periphery of the rigid shaft, and may or may not have a rigid filler between the flexible tubular member and the rigid shaft.

[0007] In some embodiments, the end of the tubular member does not extend beyond the end of the rigid shaft.

[0008] In some embodiments, the end of the tubular member is flush with the end of the rigid shaft.

[0009] In some embodiments, the brush member comprises: The device further includes a plurality of brush components extending from the outer surface of the tubular member in a direction away from the tubular member.

[0010] In some embodiments, the rigid shaft further includes a hollow structure extending through the rigid shaft and at least one engaging member located within the hollow structure, the outer end surface of the engaging member being located within the outer end surface of the end of the rigid shaft to which the engaging member belongs.

[0011] In some embodiments, the cleaning brush comprises: The connector further includes an end member arranged to be matingly attached to the mating member and having assembly structure on a side remote from the mating member.

[0012] In some embodiments, the end member comprises a guide rod having a guide portion at an end of the guide rod away from the assembly structure, the guide portion being arranged to form a rotational engagement with the engagement member.

[0013] In some embodiments, at least one end of the rigid shaft defines a receiving space located between an outer wall of the guide rod and an inner wall of the rigid shaft.

[0014] In some embodiments, the guide portion extends spirally along the circumferential direction of the guide rod in a direction away from the assembly structure; The fitting member includes a fitting portion that fits into the shape of the guide portion, and the fitting portion has a spiral groove that accommodates the guide portion.

[0015] In some embodiments, the end member further includes a guide shaft extending from the guide rod in a direction away from the assembly structure and having a locking member at an end of the guide shaft away from the guide rod; A locking portion is provided at an end of the fitting member that is away from the opening of the accommodation space, and the locking portion forms a locking and fitting structure with the fitting member.

[0016] In some embodiments, the number of the guide portions is plural, and the plural guide portions are uniformly distributed in the circumferential direction of the guide rod.

[0017] In some embodiments, the end members include a first end member and a second end member that are matingly attached to mating members at the first end and second end, respectively; The guide portions of the end member on the first side and the guide portions of the end member on the second side differ in at least one of shape, number, and size.

[0018] In some embodiments, the guide portions of the end member on the first side and the guide portions of the end member on the second side are the same in shape and size, the number of guide portions of the end member on the first side is greater than the number of guide portions of the end member on the second side, and the number of guide portions of the end member on the second side is not a divisor of the number of guide portions of the end member on the first side.

[0019] In some embodiments, the end face of the assembly structure of the first side end member facing away from the guide rod has a regular polygonal shape, and the number of sides of the regular polygon is the same as the number of guide portions of the first side end member.

[0020] Some embodiments of the present disclosure further provide an automatic cleaning device including two cleaning brushes as described above, wherein the brush members of the two cleaning brushes are mirror-symmetrical, and the assembly structures of the end members of the two cleaning brushes are mirror-symmetrical. [Brief explanation of the drawings]

[0021] The drawings herein are incorporated into the specification and constitute a part of this specification, show embodiments corresponding to the present disclosure, and are used in conjunction with the specification to explain the principles of the present disclosure. Of course, the drawings described below are merely some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without any creative effort. [Figure 1] 1 is a structural schematic diagram of an automatic cleaning device according to an exemplary embodiment of the present disclosure; [Figure 2] FIG. 2 is a schematic diagram of the bottom structure of the automatic cleaning device in FIG. [Figure 3] 1 is an exploded view of the three-dimensional structure of an example cleaning brush provided by the present disclosure. FIG. [Figure 4] FIG. 4 is a schematic cross-sectional view of the cleaning brush of FIG. 3. [Figure 5] 4 is a three-dimensional structural view of an example of an end member of the cleaning brush of FIG. 3. FIG. [Figure 6] 4 is a schematic diagram of a three-dimensional structure of an example of a fitting member of the shaft of FIG. 3. [Figure 7] 4 is a schematic three-dimensional structural view of an example of a guide fitting structure of a fitting member between the end member and the shaft of FIG. 3. FIG. [Figure 8] FIG. 8 is an exploded view of the guide fitting structure of FIG. 7. [Figure 9] 1 is an exploded schematic diagram of another example of a cleaning brush provided by the present disclosure; FIG. [Figure 10]FIG. 10 is an exploded view of the local structure of the cleaning brush of FIG. 9 from one angle. [Figure 11] 10 is an exploded view of the local structure of the cleaning brush of FIG. 9 from another angle. [Figure 12] 1 is a cross-sectional schematic view of a cleaning module provided in accordance with some embodiments of the present disclosure. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to clarify the technical solutions and technical effects of the present disclosure, the present disclosure will be described in more detail below with reference to the drawings, but of course, the described embodiments are only a part of the embodiments of the present disclosure, and do not represent all of the embodiments. All other embodiments that can be obtained by a person skilled in the art based on the embodiments of the present disclosure without any creative work are also within the scope of protection of the present disclosure.

[0023] The terms used in the embodiments of the present disclosure are merely for the purpose of describing particular embodiments and are not intended to limit the present disclosure. As used in the embodiments of the present disclosure and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms unless the context clearly indicates otherwise, and "plurality" generally includes at least two.

[0024] As will be understood, the term "and / or" as used herein merely describes the relation between related objects, and indicates that three types of relations may exist, for example, A and / or B can indicate three situations: A exists alone, A and B exist simultaneously, and B exists alone. Also, the character " / " in this specification generally indicates that the related objects before and after it are in an "or" relationship.

[0025] As should be further explained, the terms "comprises," "including," or any other variations thereof, are intended to cover non-exclusive inclusions, whereby a product or device comprising a set of elements not only includes those elements, but also includes other elements not expressly listed or inherent in such product or device. In the absence of further limitations, elements qualified by the phrase "comprises a..." do not exclude the presence of other similar elements in the product or device comprising said elements.

[0026] To further optimize the structure of the cleaning brush, the present disclosure provides a cleaning brush, the cleaning brush including a rigid shaft having axially opposite first and second ends, and a brush member coaxially fitted on the outside of the rigid shaft, wherein a rigid filler or no filler is provided between the brush member and the rigid shaft.

[0027] The cleaning brush of the present disclosure forms a roller brush with a rigid structure by directly fitting a brush member to the outside of a rigid shaft, or by fitting a rigid filler and then fitting the brush member, which greatly simplifies the manufacturing process and cost of the roller brush, and also makes it easier to control the amount of interference between the brush parts and the ground, thereby improving the overall ground cleaning efficiency.

[0028] The cleaning brush of the present disclosure has a wide range of applications and is particularly applicable to automatic cleaning equipment. The automatic cleaning equipment may be a self-propelled robot such as a mop robot, a robot vacuum cleaner, a vacuum cleaner-mop robot, or a large commercial floor cleaning machine, in which case the automatic cleaning equipment operates on an operating surface, which may be any operating surface such as the ground, a tabletop, a roof, or a platform. The self-propelled equipment may be a window cleaning robot, in which case the self-propelled equipment operates on the outer glass surface of a building, which is the operating surface. The automatic cleaning equipment may be a pipe self-propelled robot, in which case the automatic cleaning equipment operates on the inner surface of a pipe, which is the operating surface. These are merely for illustrative purposes.

[0029] For purposes of illustration, in this disclosure, the left side of a drawing page is referred to as the first side, the right side of a drawing page is referred to as the second side, the top side of a drawing page is referred to as the top side, and the bottom side of a drawing page is referred to as the bottom side, the top-to-bottom direction of a drawing page is referred to as the vertical direction, and the left-to-right direction of a drawing page is referred to as the horizontal direction.

[0030] Selected embodiments of the present disclosure will now be described in detail with reference to the drawings.

[0031] Fig. 1 is a structural schematic diagram of an automatic cleaning device according to an exemplary embodiment, and Fig. 2 is a bottom structural schematic diagram of the automatic cleaning device in Fig. 1. As shown in Fig. 1 and Fig. 2, the automatic cleaning device may be a vacuum suction robot, a mop / scrub robot, a window climbing robot, etc., and the automatic cleaning device may include a moving platform 1000, a sensing system 2000, a control system (not shown), a driving system 3000, an energy system (not shown), a human-machine interaction system 4000, and a cleaning module 5000, where: The mobile platform 1000 may be arranged 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 mop robot, where the automatic cleaning device operates on the ground, and the ground is the operating surface; the automatic cleaning device may be a window cleaning robot, where the automatic cleaning device operates on the exterior surface of architectural glass, and the glass is the operating surface; or the automatic cleaning device may be a pipe cleaning robot, where the automatic cleaning device operates on the interior surface of a pipe, and the interior surface of the pipe is the operating surface. Purely for purposes of demonstration, the following description in this application will use a mop robot as an example.

[0032] In some embodiments, the mobile platform 1000 may be an autonomous mobile platform or a non-autonomous mobile platform. The term "autonomous mobile platform" refers to the mobile platform 1000 itself being capable of automatically and adaptively making operational decisions based on unexpected environmental inputs, while the non-autonomous mobile platform itself is not capable of adaptively making operational decisions based on unexpected environmental inputs, but can execute a predetermined program or operate according to a certain logic. Accordingly, if the mobile platform 1000 is an autonomous mobile platform, the target direction may be determined autonomously by an automatic cleaning device, while if the mobile platform 1000 is a non-autonomous mobile platform, the target direction may be established by a system or artificially.

[0033] The sensing system 2000 includes a positioning device (not shown) located above the mobile platform 1000, a buffer (not shown) located at the front portion of the mobile platform 1000, a cliff sensor (not shown) located at the bottom of the mobile platform, and sensor devices such as ultrasonic sensors (not shown), infrared sensors (not shown), magnetometers (not shown), accelerometers (not shown), gyroscopes (not shown), and odometers (not shown), and provides various position information and operating status information of the machine to the control system.

[0034] For ease of explanation, directions are defined as follows. The automatic cleaning device can be oriented by defining three mutually perpendicular axes: a lateral axis Y, a front-to-rear axis X, and a vertical axis Z. The direction indicated by the arrow along the front-to-rear axis X is labeled as the "rear direction," and the direction opposite to the direction of the arrow along the front-to-rear axis X is labeled as the "forward direction." The lateral axis Y is a direction substantially along the width of the automatic cleaning device. The direction indicated by the arrow along the lateral axis Y is labeled as the "leftward direction," and the direction opposite to the direction of the arrow along the lateral axis Y is labeled as the "rightward direction." The vertical axis Z is a direction extending upward from the bottom surface of the automatic cleaning device. As shown in FIG. 1 , the direction along the front-to-rear axis X is defined as a second direction, which may be, for example, a front or rear direction, and the direction perpendicular to the second direction in the horizontal plane is a first direction, which may be, for example, a left or right direction.

[0035] The control system (not shown) is installed on a circuit board within 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 storage medium such as a hard disk, flash memory, or random access memory, and is configured to receive environmental information sensed by the plurality of sensors transmitted from the sensing system, use a localization algorithm such as SLAM to create a real-time map of the environment in which the automatic cleaning device exists based on obstacle information fed back from the localization device, and autonomously determine a driving path based on the environmental information and the environmental map, and then control the drive system 3000 to perform operations such as moving forward, backward, and / or steering based on the autonomously determined driving path. Furthermore, the control system can also determine whether to activate the cleaning module 5000 to perform a cleaning operation based on the environmental information and the environmental map.

[0036] The drive system 3000 can execute drive commands to operate the automatic cleaning equipment to travel across the ground based on specific distance and angle information, such as x, y, and θ components. The drive system 3000 includes drive wheel assemblies, and can simultaneously control the left and right wheels. For more precise control of the machine's operation, the drive system 3000 preferably includes a left drive wheel assembly and a right drive wheel assembly, respectively. The left and right drive wheel assemblies are installed symmetrically along the horizontal axis defined by the mobile platform 1000. To enable the automatic cleaning equipment to operate more stably on the ground or have stronger operating capabilities, the automatic cleaning equipment may include one or more steering assemblies. The steering assemblies may be driven wheels or drive wheels, and their structural form may include, but is not limited to, swivel wheels, and the steering assemblies may be located in front of the drive wheel assemblies.

[0037] The energy system (not shown) includes a rechargeable battery such as a nickel-metal hydride battery or a lithium battery. A charging control circuit, a battery pack charging temperature detection circuit, and a battery low voltage monitoring circuit may be connected to the rechargeable battery, and the charging control circuit, battery pack charging temperature detection circuit, and battery low voltage monitoring circuit are further connected to a single-chip microcomputer control circuit. The main body is connected to a charging stand via charging electrodes installed on the side or bottom of the aircraft for charging.

[0038] The human-machine interaction system 4000 includes buttons on the main body panel for the user to select functions, and may further include a display screen and / or indicator lights and / or a speaker for displaying the current machine status or function selection items to the user. The human-machine interaction system 4000 may further include a mobile phone client program. For a route navigation type cleaning device, the mobile phone client can display a map of the environment in which the machine is located and the location of the device to the user, thereby providing the user with richer and more user-friendly functions.

[0039] 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 dust from the ground toward the dust box through a dust outlet between the main brush module and the dust box. The dust is then sucked into the dust box by suction generated by the fan and passing through the dust box. The dust removal capacity of a vacuum cleaner can be characterized by its dust pickup efficiency (DPU). DPU is affected by the wind power utilization rate of the airflow path consisting of the dust outlet, dust box, fan, air outlet, and the connecting components between them, as well as the type and output of the fan, making it a complex system design issue. Compared to typical plug-in vacuum cleaners, improved dust removal capacity is particularly significant for energy-limited automatic cleaning devices. Because improved dust removal capacity directly and effectively reduces energy requirements, a machine that can clean 80 square meters of ground on a single charge can now clean 180 square meters or more on a single charge. Furthermore, by reducing the number of charging times, the service life of the battery is also significantly increased, and the user will have to replace the battery less frequently.More intuitively and importantly, the improvement of dust removal ability is the most noticeable and important user experience, and the user can directly reach a conclusion on whether the cleaning / wiping is clean or not.

[0040] 2 is a schematic diagram of the bottom structure of the automatic cleaning device in FIG. 1. As shown in FIG. 2, the automatic cleaning device includes a moving platform 1000, which is arranged to move freely on an operating surface. A cleaning module 5000 is installed at the bottom of the moving platform 1000, which is arranged 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, which is applied to the roller brush 5300 via a multi-stage gear set. The roller brush 5300 rotates under the driving force to clean the operating surface, or the roller brush 5300 rotates under the driving force to collect dust.

[0041] 2, the roller brush frame 5200 is provided with a front cleaning brush mounting position 5211 and a rear cleaning brush mounting position 5212 for accommodating the cleaning roller brushes. The front cleaning brush mounting position 5211 has a first end 52111 and a second end 52112 opposite to the first end 52111, and one end of the first roller brush 100 is engaged and fixed with the first end 52111, and the other end of the first roller brush is engaged and fixed with the second end 52112. In some embodiments, the front cleaning brush mounting position 5211 is an elongated groove structure in the moving platform, and the elongated groove structure extends along the first direction. The rear cleaning brush mounting position 5212 has a third end 52121 and a fourth end 52122 opposite the third end 52121. In some embodiments, the rear cleaning brush mounting position 5212 and the front cleaning brush mounting position 5211 have essentially the same structure, such as an elongated groove structure on a moving platform, which extends along the first direction, and a second roller brush can be mounted in the elongated groove of the rear cleaning brush mounting position 5212 through an opening of the elongated groove structure. The two elongated groove structures are parallel to each other in the second direction. The shape and size of the elongated groove structure are not limited, as long as it can accommodate at least a portion of the first roller brush and the second roller brush. The first end of the front cleaning brush mounting position 5211 and the third end of the rear cleaning brush mounting position 5212 are located on one side of the front-rear axis X, and the second end of the front cleaning brush mounting position 5211 and the fourth end of the rear cleaning brush mounting position 5212 are located on the other side of the front-rear axis X.

[0042] For illustrative purposes, in each of the following embodiments of the present disclosure, an elongated groove structure close to the steering wheel of an automatic cleaning device is used as the front cleaning brush mounting position 5211, and an elongated groove structure away from the steering wheel is used as the rear cleaning brush mounting position 5212, but of course this may be reversed.

[0043] 2, in some embodiments, the automatic cleaning device includes two cleaning roller brushes 5300, one cleaning roller brush installed at the front cleaning brush mounting position 5211 and considered to be the "front roller brush," and the other cleaning roller brush installed at the rear cleaning brush mounting position 5212 and considered to be the "rear roller brush." ​​The front roller brush can be mounted in the front cleaning brush mounting position 5211 through an opening in an elongated groove structure, and the rear roller brush can be mounted in the rear cleaning brush mounting position 5212 through an opening in an elongated groove structure.

[0044] Hereinafter, the cleaning brush in this disclosure will be described using one roller brush, for example, the rear roller brush, as an example.

[0045] Fig. 3 is an exploded view of the three-dimensional structure of an example of a cleaning brush provided by the present disclosure. Fig. 4 is a schematic view of the cross-sectional structure of the cleaning brush of Fig. 3. Fig. 5 is a three-dimensional structure diagram of an example of an end member of the cleaning brush of Fig. 3. Fig. 6 is a schematic view of the three-dimensional structure of an example of a fitting member for the shaft of Fig. 3. Fig. 7 is a schematic view of the three-dimensional structure of an example of a guide fitting structure for a fitting member between the end member and shaft of Fig. 3. Fig. 8 is a structural exploded view of the guide fitting structure of Fig. 7.

[0046] 3 to 8, the cleaning brush 200 includes a shaft 210 having a first end 211 and a second end 212 opposed along the axial direction, at least one of the first end 211 and the second end 212 including a fitting member 213, a brush member 230 coaxially fitted onto the outer periphery of the shaft 210, and an end member 220 arranged to be fitted and attached to the fitting member 213, and having an assembly structure 221 on the side away from the fitting member 213.

[0047] Specifically, the assembly structure 221 includes, for example, a bearing structure 221'' and a transmission structure 221', and when the end member 220 is an end member located on the driving side, i.e., when the end member 220 is an end member 220' on the first side connected to the drive unit of the cleaning module, the assembly structure 221 is, for example, a transmission structure 221', and when the end member 220 is an end member located on the driven side, i.e., when the end member 220 is an end member 220'' on the second side opposite to the end member 220' on the first side, the assembly structure 221 is, for example, a bearing structure 221''.

[0048] In the following, the connection and assembly relationship between the end member and the shaft will be described mainly using the drive side end member as an example, and the connection relationship between the driven side end member and the shaft is similar.

[0049] As shown in FIG. 4, an accommodation space 214 is opened on the end surface of the end where the engaging member 213 is located, facing the end member 220, and the engaging member 213 is accommodated in the accommodation space 214, and a portion of the end member 220 is inserted into the accommodation space 214 and fitted into the engaging member 213 for attachment.

[0050] Specifically, the end face of the fitting member 213 that is close to the assembly structure 221 is farther away from the assembly structure 221 than the opening 2141 of the receiving space 214, see FIG.

[0051] Optionally, the end surface of the brush member 230 adjacent to the assembly structure 221 is flush with the opening 2141 of the receiving space 214, see Fig. 4 for details. On the one hand, it can effectively support the end of the brush member and maintain the necessary strength when cleaning the ground, and on the other hand, the brush member can effectively protect the mounting and fitting three-dimensional structure such as the core rod and the internal fitting member, preventing a decrease in user experience due to collision damage.

[0052] As shown in FIG. 5, the end member 220 includes a guide rod 222, which is located on the side of the assembly structure 221 that is close to the shaft 210, and the end of the guide rod 222 that is away from the assembly structure 221 has a guide portion 2221, which is arranged to form a rotational engagement structure with the engagement member 213.

[0053] Specifically, the guide portion 2221 extends spirally along the circumferential direction of the guide rod 222 in a direction away from the assembly structure 221. The guide portion 2221 is arranged in a spiral shape having a rotation direction, and specifically, has a spiral shape that extends spirally (i.e., extends while rotating spirally) along the outer circumferential surface of the guide rod 222, thereby giving the guide portion 2221 a rotation direction, for example, a clockwise (or counterclockwise) rotation direction around the axis of the shaft 210.

[0054] 4 and 5, the end member 220 includes a guide rod 222 and at least one guide portion 2221, where the guide portion 2221 is provided on the outer circumferential surface of the guide rod 222, and the plurality of guide portions 2221 are uniformly distributed in the circumferential direction of the guide rod 222 so that the guide portion 2221 forms a rotational engagement structure with the engagement member 213, see FIGS. 4 and 7.

[0055] 5, the guide portion 2221 is a protrusion formed by etching a groove from the outer circumferential surface of the guide rod 222. The guide portion 2221 is formed at one end of the guide rod 222 that is remote from the assembly structure 221.

[0056] Specifically, there are a plurality of guide portions 2221. In the example of Fig. 5, there are five guide portions 2221, and these five guide portions 2221 have the same size.

[0057] It should be noted that in other examples, the number of guide portions may also be three, four, six, or more, and the size of the guide portions may also be different, which are merely described as selective examples and should not be understood as limiting the present disclosure. Furthermore, with regard to the manner in which the guide portions are formed, the guide portions may also be grooves formed by etching inward from the outer circumferential surface of the guide rod, which are merely described as selective examples and should not be understood as limiting the present disclosure. Optionally, at least one of the shape, number, and size of the guide portions 211 may be different.

[0058] Furthermore, the end member 220 further includes a guide shaft 223 that extends from the guide rod 222 away from the assembly structure 221 and has a locking member 2231 at the end of the guide shaft 223 that is away from the guide rod 222.

[0059] In this embodiment, one end of the guide shaft 223 adjacent to the assembly structure 221 is fitted into the guide rod 222 .

[0060] Specifically, the guide shaft 223 includes a locking member 2231 installed along the outer circumferential surface, and the locking member 2231 is, for example, an annular groove, so that the locking member 2231 and the fitting member 213 form a locking and fitting structure.

[0061] As shown in FIG. 6, the fitting member 213 includes a fitting portion 2131 that fits into the shape of the guide portion 2221, and the fitting portion 2131 has a spiral groove that accommodates the guide portion 2221.

[0062] Specifically, the engaging member 213 includes a main body 2130, the main body 2130 has a cavity, the main body 2130 includes an engaging portion 2131 disposed within the cavity, the engaging portion 2131 being a spiral groove extending along the inner wall of the cavity, the engaging portion 2131 and the guide portion 2221 forming a rotational engaging structure, whereby the guide rod of the end member and the engaging member form a rotational engaging mechanism, see FIG. 7 for details.

[0063] In this example, the number of the fitting portions 311 is the same as the number of the guide portions 211, for example, five.

[0064] It should be noted that, in another example, the shape of the fitting portion may also be a recessed groove, and the guide portion may be a protruding portion. Also, in another example, the number of fitting portions may be three, four, six or more, as long as the number of guide portions is the same as the number of fitting portions. The above is merely described as a selective example, and should not be understood as limiting the present disclosure.

[0065] By adding a guide portion to the outer peripheral surface of the guide rod, the guide rod of the end member and the fitting member of the shaft form a rotational fitting structure, which makes it possible to effectively perform guide attachment, realize an effective foolproof attachment structure, improve the ease of attaching the end member, and improve the stability of the attachment structure. By fitting the rotational fitting structure formed by the guide rod of the end member and the fitting member inside the shaft with the locking fitting structure formed by the guide shaft and the fitting member, it is possible to perform guide attachment more effectively, realize a more effective foolproof attachment structure, further improve the ease of attaching the end member, and further improve the stability of the attachment structure.

[0066] In the example of Figure 6, the engaging member 213 includes an extension portion 2132 connected to and extending outward from the main body portion 2130, wherein the extension portion 2132 is closer to the center of the shaft 210 than the main body portion 2130 and the outer diameter of the extension portion 2132 is smaller than the outer diameter of the main body portion 2130.

[0067] As shown in Figures 7 and 8, the extension 2132 is provided with a plurality of ribs 21321 uniformly distributed on its outer circumferential surface, thereby forming an uneven surface on the outer circumferential surface of the extension 2132, which is used to form a fitting structure corresponding to the interior of the shaft 210 (i.e., the shape of the interior of the shaft), thereby increasing the contact area between the fitting member 213 and the interior of the shaft 210, which is advantageous for adhering the fitting member 213 to the accommodating space 214 of the shaft 210, thereby increasing the connection strength of the connection structure between the fitting member 213 and the shaft 210, and making the installation more stable.

[0068] Illustratively, the coupling structure between the fitting 213 and the interior of the shaft 210 may also be a stepped fitting structure, etc. In other embodiments, the entire or at least a portion of the fitting 213 assembly may also be integrally molded with the shaft 210. The above are merely described as selective examples and should not be understood as limiting the present disclosure.

[0069] 7, a locking portion 21322 is provided at one end of the fitting member 213 that is close to the shaft center, and the locking portion 21322 is closer to the shaft center than the rib 21321. The locking portion 21322 is, for example, a claw portion, and the locking portion 21322 and the locking member 2231 (i.e., annular groove portion) of the guide shaft 223 of the end member 220 form a locking fitting structure.

[0070] 3, the end member 220 is provided with a blocking structure 225 for preventing the wound material from extending excessively away from the cleaning brush. The blocking structure 225 is provided on the side closer to the assembly structure 221 than the guide rod 210 (i.e., the side farther from the shaft center).

[0071] Specifically, the outer diameter of the blocking structure 225 is larger than the outer diameter of the guide rod 210, and the blocking structure 225 is spaced a certain distance from the first end 211 of the shaft 210, see Figures 7 and 8.

[0072] By providing a blocking structure on the end member and winding the wound material directly around the blocking structure of the end member, it is possible to effectively prevent the wound material from winding around the shaft.

[0073] In another example, in the cleaning brush 200 shown in FIG. 9 , the end member 220 includes a first end member 220′ and a second end member 220″, which are respectively fitted into fitting members 213 at the first end 211 and the second end 212 of the shaft 210, the shaft 210 being a rigid member, the brush member 230 being directly fitted onto the shaft 210, and the cleaning brush 200 being, for example, a hard brush. Optionally, the shaft 210 is a rigid member, and a rigid filler is filled between the brush member 230 and the shaft 210.

[0074] In this example, the first guide portion 2221' of the end member 220' on the first side (i.e., the end member 220 in FIG. 4) and the second guide portion 2221'' of the end member 220'' on the second side differ in at least one of shape, number, and size.

[0075] In one alternative embodiment, the shape and size of the first guide portions 2221' of the first end member 220' and the shape and size of the second guide portions 2221'' of the second end member 220'' are the same, the number of first guide portions 2221' of the first end member 220' is greater than the number of second guide portions 2221'' of the second end member 220'', and the number of second guide portions 2221'' of the second end member 220'' is not a divisor of the number of first guide portions 2221' of the first end member 220'. For example, the number of first guide portions 2221' of the first end member 220' is five, and the number of second guide portions 2221'' of the second end member 220'' is two.

[0076] 9 and 10, the first-side end member 220' (i.e., the end member 220 located on the driving side, the left end shown in FIG. 10) is attached to the first end 210 of the shaft 210, and the first-side end member 220' includes a transmission structure 221', which is closer to the outside than the first blocking structure 225', and the end face of the transmission structure 221' has a polygonal shape, for example a regular polygon. The transmission mechanism 221' is connected to the drive mechanism of the automatic cleaning device.

[0077] In this example, the brush member 230 includes a cylindrical member fitted onto the outer periphery of the shaft, and a plurality of brush parts 232 extending from the outer surface of the cylindrical member in a direction away from the cylindrical member 231, and the plurality of brush parts 232 are uniformly arranged along the circumferential direction of the cylindrical member.

[0078] It should be noted that in this example, the brush element 232 includes at least one size of first brush element, for example, five sets of brush elements, each set of brush elements includes two sizes of first brush elements, for example, the first brush elements are V-shaped or spiral-shaped. The brush element 230 in this example is almost the same as the brush element 230 in the example of Figure 3, so a description of the similar parts will be omitted.

[0079] Specifically, the number of first guide portions 2221′ of the first end member 220′ is a divisor of the number of the brush elements 232. For example, if the number of first guide portions 2221′ is five, the number of the brush elements 232 is a multiple of five, such as five sets, ten sets, etc., where each set includes two or more brush elements.

[0080] By setting the number of the first guide portions 2221' to be a divisor of the number of sets of the brush elements 232, when the roller brush is attached to the roller brush frame, the brush elements 232 have a specific attachment angle, which is advantageous for preventing matching interference between the brush elements corresponding to the two roller brushes.

[0081] In the example of FIG. 9, the number of first guide portions 2221' is five, and the number of sets of the brush parts 232 is five.

[0082] As shown in FIG. 10, the second side end member 220'' is attached to the second end 212 of the shaft 210 (i.e., the end member located on the driven side, the right end shown in FIG. 10), and the second side end member 220'' includes an assembly structure (specifically, a bearing structure 221''), which is rotatable relative to the shaft 210 and is connected to another structure of the cleaning equipment (e.g., the body, etc.) by the rotation of the bearing structure 221'' relative to the shaft.

[0083] Specifically, the first side end member 220' is attached to a first fitting member 213' at a first end 211 within the shaft 210, and the second side end member 220'' is attached to a second fitting member 213'' at a second end 212 within the shaft 210.

[0084] It should be noted that the shaft and brush member in the example of Fig. 8 have almost the same structure as the shaft and brush member in the example of Fig. 3, and therefore a description of the similar parts will be omitted. Also, the first fitting member 213' in Fig. 9 has almost the same structure as the fitting member 213 in Fig. 6, and therefore a description of the similar parts will be omitted.

[0085] 9, the first end member 220′ includes a first guide rod 222′, at least one first guide portion 2221′, and a first guide shaft 223′, where a plurality of first guide portions 2221′ are provided on the first guide rod 222′, and the first guide portions 2221′ are protrusions formed by etching grooves on the outer circumferential surface of the first guide rod 222′. The first guide portion 2221′ is formed at one end of the first guide rod 222′ away from the assembly structure 221′.

[0086] As shown in Figures 10 and 11, the second side end member 220'' includes a second guide rod 222'', at least one second guide portion 2221'', and a second guide shaft 223'', where multiple second guide portions 2221'' are installed on the second guide rod 222''.

[0087] Optionally, when the shape of the first guide portion 2221' of the first side end member 220' and the shape of the second guide portion 2221'' of the second side end member 220'' are the same, the number of first guide portions 2221' of the first side end member 220' and the number of second guide portions 2221'' of the second side end member 220'' are different.

[0088] Optionally, the number of first guide portions 2221' of the end member 220' on the first side is odd, and the number of second guide portions 2221" of the end member 220" on the second side is even. Preferably, the number of first guide portions 2221' of the end member 220' on the first side and the number of second guide portions 2221" of the end member 220" on the second side are not multiples of each other, thereby ensuring that an end member on the side with fewer guide portions cannot be mistakenly attached to a mating member corresponding to an end member on the side with more guide portions, thereby ensuring that neither end member can be mistakenly attached and providing maximum foolproofness.

[0089] As shown in Figures 10 and 11, the second end 212 of the shaft 210 includes a second fitting member 213'' that fits into the second guide portion 2221'' of the second guide rod 222'', and the number of the second guide portions 2221'' is two, and the second guide portion 2221'' is a protrusion formed by etching a groove from the outer surface of the second guide rod 222'', and is installed at one end of the second guide rod 222'' that is away from the bearing structure 221''.

[0090] Specifically, the second engaging member 213″ includes an extension portion 2132″ connected to 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 engaging portion 2131″ disposed within the cavity, the engaging portion 2131″ being a spiral groove extending along the inner wall of the cavity, and the engaging portion 2131″ and the second guide portion 2221″ form a rotational engaging structure, whereby the guide rod of the second end member and the engaging member form a rotational engaging mechanism.

[0091] As shown in Figures 10 and 11, the extension portion 2132'' of the second fitting member 213'' has a plurality of ribs 21321'' uniformly distributed on the outer circumferential surface thereof, thereby forming an uneven surface on the outer circumferential surface of the extension portion 2132'', which is used to form a fitting structure corresponding to the interior of the shaft 210 (i.e., the shape of the interior of the shaft), thereby increasing the contact area between the second fitting member 213'' and the interior of the shaft 210, which is advantageous for adhering the second fitting member 213'' within the accommodating space of the shaft 210, increasing the bonding strength of the bonding structure between the second fitting member 213'' and the shaft 210, and making the installation more stable.

[0092] Furthermore, a locking portion 21322'' is provided at one end of the second fitting member 213'' close to the shaft center, and the locking portion 21322'' is closer to the shaft center than the rib 21321''. The locking portion 21322'' is, for example, a claw portion, and the locking portion 21322'' and the locking member 2231 (i.e., annular groove portion) of the guide shaft 223 of the second end member 220'' form a locking engagement structure.

[0093] In the example of Figure 9, the first side end member 220' includes an assembly structure (specifically, a transmission structure 221') and a first guide shaft 223', one end of the first guide shaft 223' is fitted into the first guide rod 222', and the other end of the first guide shaft 223' is fitted into the first guide hole of the first end portion 211', and the first guide hole is opened coaxially on the end face of the first end portion 211'.

[0094] The assembly structure 221'' of the second end member 220'' and the second guide rod 222'' are separate structures. Specifically, one end of the second guide shaft 223'' passes through the assembly structure (specifically, the bearing structure 221'') of the second end member 220'', and the other end of the second guide shaft 223'' is fitted into a second guide hole of the second end portion 212, which is opened coaxially on the end surface of the first end portion 211.

[0095] Optionally, a blocking structure 225' is provided on the first end member 220', specifically, between the assembly structure (specifically, the transmission structure 221') and the first guide rod 222'. A blocking structure 225'' is provided on the second end member 220'', specifically, between the assembly structure (specifically, the bearing structure 221'') and the second guide rod 222''. The blocking structures on both end members are used to prevent the wound material from excessively extending away from the brush member 230.

[0096] In this example, the outer end surface of the first end member 220' is arranged in the shape of a first polygon corresponding to the number of the brush elements 232. Specifically, the end surface of the first end member 220' facing away from the guide rod 222 of the transmission structure 221' has a regular polygonal shape, and the number of sides of the regular polygon is the same as the number of the first guide portions 2221' of the first end member 220'. At the same time, the number of the first guide portions 2221' of the first end member 220' is a divisor of the number of the brush elements 232.

[0097] When the roller brush is installed in this manner and attached to the roller brush frame, the brush element 232 can have a specific mounting angle. When there are multiple roller brushes with similar structures, this design is very advantageous in forming a mutual interlocking relationship between the blades of the multiple roller brushes, especially when it is necessary to align the blades of two roller brushes, ensuring blade alignment to achieve synchronous operation, interference, or interlocking in a certain posture, and further realizing different cleaning effect requirements.

[0098] Compared to conventional technology, the cleaning brush of the present disclosure forms a rotational engagement structure using the guide portion of the guide rod of the end member and the engagement member inside the shaft, and engages with the locking engagement structure formed by the guide shaft and the engagement member, thereby enabling more effective guide attachment, realizing a more effective foolproof attachment structure, further improving the ease of attachment of the end member, and further improving the stability of the attachment structure.

[0099] Furthermore, by providing a blocking structure on the end member and winding the wound material directly around the blocking structure of the end member, it is possible to effectively prevent the wound material from getting wrapped around the shaft.

[0100] The present disclosure further provides another embodiment that inherits from the above embodiment, and the embodiment of the present disclosure further provides an automatic cleaning device including two cleaning brushes according to any of the above embodiments, wherein the brush members of the two cleaning brushes are mirror-symmetrical, and the assembled structures of the end members of the two cleaning brushes are mirror-symmetrical. The interpretation based on the meaning of the same name is the same as the above embodiment, for example, the structure of a single cleaning brush has the same technical effect as the above embodiment, and the description here is omitted.

[0101] In some embodiments, as shown in FIG. 12, in order to distinguish the structure of two roller brushes (the cleaning brushes), in this embodiment, they are distinguished by the names "first" and "second" based on the above, and the roller brush 5300 assembled in the roller brush frame 5200 is installed along a first direction perpendicular to the axis of the moving platform, and is a first roller brush 100 including a first shaft 110, a first filler 120, and a first brush member 130, the first filler 120 is arranged to be fitted onto the first shaft 110 so as to be coaxial with the first shaft 110, and the first brush member 130 is arranged to be coaxial with the first shaft 110. The second roller brush 200 includes a first roller brush 100 arranged to be fitted onto the first shaft 110, and a second roller brush 200 installed in a direction parallel to the first roller brush 100 and including a second shaft 210, a second filler 220, and a second brush member 230, wherein the second filler 220 is arranged to be fitted onto the second shaft 210 so as to be coaxial with the second shaft 210, and the second brush member 230 is arranged to be fitted onto the second shaft 210 so as to be coaxial with the second shaft 210, wherein the first filler 120 is a rigid member and the second filler 220 is a rigid member. The first roller brush 100 and the second roller brush 200 are fitted with non-compressible rigid fillers, which allow for precise control of the amount of interference between the first roller brush 100 and the second roller brush 200 and the ground, as well as precise control of the assembly between the first roller brush 100, the second roller brush 200 and the roller brush frame 5200, and provide a better cleaning effect when using the beating cleaning method on surfaces such as carpets. The first roller brush 100 and the second roller brush 200 rotate in opposite directions, which allows them to stir up dust on the operating surface when performing a cleaning task, or to expel dust in the dust box when performing a dust collection task.It should be noted that in this embodiment, the first roller brush 100 may be the "front roller brush" or the "rear roller brush", and the second roller brush 200 may similarly be the "front roller brush" or the "rear roller brush", but is not limited thereto.

[0102] In some embodiments, the plane on which the lowest point of the first filler 120 is located is higher than the plane on which the lowest point of the second filler 220 is located, and the first roller brush 100 is a hard roller brush that is not cushioned by an elastic material such as a sponge, and the hitting noise against the ground (especially hard ground) is louder than that of a soft roller brush. Therefore, by setting the plane on which the lowest point of the first filler 120 is located higher than the plane on which the lowest point of the second filler 220 is located, the sound of the first roller brush 100 hitting the hard ground is reduced, thereby reducing noise.

[0103] In some embodiments, the plane on which the lowest point of the first filler 120 is located is lower than the plane on which the lowest point of the second filler 220 is located. That is, the assembly position of the first roller brush is lower than that of the second roller brush. Because the striking strength of the first roller brush (the former hard roller brush) is high, the assembly position of the first roller brush is set lower to further strengthen the first roller brush's ability to strike dust. In this case, the hardness of the first brush component may be set lower than that of the second brush component, thereby reducing the noise of the first roller brush and controlling the noise control effect and striking effect within a reasonable range.

[0104] In some embodiments, the horizontal plane on which the center of the first shaft 110 is located is higher than the horizontal plane on which the center of the second shaft 210 is located, and the first roller brush 100 is a hard roller brush that is not cushioned by an elastic material such as a sponge, and the hitting noise against the ground (especially hard ground) is louder than that of a soft roller brush. Therefore, by installing the assembly position of the first roller brush higher than the assembly position of the second roller brush, the sound of the first roller brush 100 hitting the hard ground is reduced, thereby reducing noise.

[0105] In some embodiments, the horizontal plane on which the center of the first shaft 110 is located is lower than the horizontal plane on which the center of the second shaft 210 is located. The assembly position of the first roller brush is lower than that of the second roller brush. Because the striking strength of the first roller brush (the former hard roller brush) is high, the assembly position of the first roller brush is set lower to further strengthen the first roller brush's ability to strike dust. In this case, the hardness of the first brush component may be set lower than that of the second brush component, thereby reducing the noise of the first roller brush and controlling the noise control effect and striking effect within a reasonable range.

[0106] The automatic cleaning equipment provided by the embodiments of the present disclosure has a double rigid roller brush structure consisting of a rigid first roller brush and a rigid second roller brush, which greatly simplifies the manufacturing process and cost of the roller brushes, and the rigid structure of the roller brush makes it easier to control the amount of interference between the brush parts and the ground, thereby improving the overall ground cleaning efficiency.

[0107] Finally, it should be noted that the embodiments in this specification are described in a progressive manner, and the differences between each embodiment and other embodiments are emphasized in the description, and the same or similar parts between each embodiment may be referred to. Regarding the systems or devices disclosed in the embodiments, they correspond to the methods disclosed in the embodiments, so the description is relatively simple, and the relevant parts may be referred to the description of the method part.

[0108] The above examples are used only to explain the technical solutions of the present disclosure and are not limiting thereof. The present disclosure has been described in detail with reference to the above examples. However, those skilled in the art may still amend the technical solutions described in the above examples or equivalently replace some of the technical features thereof, but it should be understood that such amendments or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A cleaning brush, a rigid shaft having axially opposed first and second ends; a brush member coaxially fitted on the outside of the rigid shaft; A rigid filler or no filler is provided between the brush member and the rigid shaft. Cleaning brush.

2. The brush member is a flexible tubular member fitted onto the outer periphery of the rigid shaft, with a rigid filler or no filler provided between the flexible tubular member and the rigid shaft; The cleaning brush of claim 1 .

3. the end of the tubular member does not extend beyond the end of the rigid shaft; 3. The cleaning brush of claim 2.

4. the end of the tubular member is flush with the end of the rigid shaft; 4. The cleaning brush of claim 3.

5. The brush member is The brush head further includes a plurality of brush components extending from the outer surface of the tubular member in a direction away from the tubular member.

3. The cleaning brush of claim 2.

6. The rigid shaft further includes a hollow structure extending through the rigid shaft and at least one fitting member located within the hollow structure, the outer end surface of the fitting member being located within the outer end surface of the end of the rigid shaft at which the fitting member is located. The cleaning brush according to any one of claims 1 to 5.

7. The cleaning brush is an end member arranged to be fitted and attached to the fitting member, the end member having an assembly structure on a side away from the fitting member; 7. The cleaning brush of claim 6.

8. the end member includes a guide rod having a guide portion at an end of the guide rod away from the assembly structure, the guide portion being arranged to form a rotational engagement structure with the engagement member; 8. The cleaning brush of claim 7.

9. At least one end of the rigid shaft defines a receiving space located between an outer wall of the guide rod and an inner wall of the rigid shaft.

9. The cleaning brush of claim 8.

10. the guide portion extends spirally along the circumferential direction of the guide rod in a direction away from the assembly structure, The fitting member includes a fitting portion that fits into a shape of the guide portion, and the fitting portion has a spiral groove that accommodates the guide portion.

10. The cleaning brush according to claim 8 or 9.

11. the end member further includes a guide shaft extending in a direction away from the assembly structure from the guide rod and having a locking member at an end of the guide shaft away from the guide rod; a locking portion is provided at an end of the fitting member that is away from the opening of the accommodation space, and the locking portion forms a locking engagement structure with the fitting member; 10. The cleaning brush of claim 9.

12. The number of the guide portions is plural, and the plural guide portions are uniformly distributed in the circumferential direction of the guide rod. The cleaning brush according to any one of claims 8 to 11.

13. the end members include a first end member and a second end member that are fitted and attached to the fitting members at the first end and second end, respectively; The guide portion of the end member on the first side and the guide portion of the end member on the second side are different in at least one of shape, number, and size. The cleaning brush according to any one of claims 8 to 11.

14. The guide portions of the end member on the first side and the guide portions of the end member on the second side have the same shape and size, the number of the guide portions of the end member on the first side is greater than the number of the guide portions of the end member on the second side, and the number of the guide portions of the end member on the second side is not a divisor of the number of the guide portions of the end member on the first side.

14. The cleaning brush of claim 13.

15. an end surface of the assembled structure of the end member on the first side facing away from the guide rod has a regular polygonal shape, and the number of sides of the regular polygon is the same as the number of guide portions of the end member on the first side; 15. The cleaning brush of claim 14.

16. An automatic cleaning device comprising two cleaning brushes according to any one of claims 1 to 15, The brush members of the two cleaning brushes are mirror symmetrical, and the assembly structures of the end members of the two cleaning brushes are mirror symmetrical. Automatic cleaning equipment.

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