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 the priority of Chinese Patent Application No. 202223604724.6 filed on December 30, 2022, and the disclosure content of the above Chinese patent application is incorporated herein by reference in its entirety as part of this disclosure.

Technical Field

[0002] This disclosure relates to the technical field of self-propelled devices, specifically to cleaning brushes and automatic cleaning devices.

Background Art

[0003] The cleaning brush is an important functional member of the cleaning device. The size of the end cap of the conventional cleaning brush is relatively small, the end of the shaft of the cleaning brush is more exposed from outside the end cap, and the end cap is located outside the cylindrical member that is externally fitted to the outer circumference of the shaft cap of the cleaning brush, and the winding object wound around the cylindrical member is easily wound from the end of the cylindrical member to the end of the shaft. The end cap structure of the conventional cleaning brush still has the problem that it cannot avoid the winding and sticking of the output power end and the bearing end of the motor caused by the excessive extension of the winding object towards the end of the cleaning brush. In addition, there is still a large room for improvement in many aspects, such as the end cap structure of the cleaning brush, the mounting structure of the end cap structure and the shaft, and the foolproof when mounting the end caps on both sides of the cleaning brush.

Summary of the Invention

[0004] An object of this disclosure is to provide a cleaning brush and an automatic cleaning device that can solve the problem of low cleaning ability of the automatic cleaning device during the cleaning process. Specifically as follows.

[0005] Some embodiments of this disclosure provide a cleaning brush, and the cleaning brush has a rigid shaft with a first end and a second end opposite in the axial direction, and The brush member is coaxially fitted onto the outside of the rigid shaft, Here, a rigid filler is provided between the brush member and the rigid shaft, or no filler is provided.

[0006] In some embodiments, the brush member is The present invention includes a flexible cylindrical member fitted onto the outer circumference of the rigid shaft, wherein a rigid filler is provided between the flexible cylindrical member and the rigid shaft, or no filler is provided between the flexible cylindrical member and the rigid shaft.

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

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

[0009] In some embodiments, the brush member is The system further includes a plurality of brush components extending from the outer surface of the cylindrical member in a direction away from the cylindrical member.

[0010] In some embodiments, the rigid shaft further includes a hollow structure penetrating the rigid shaft and at least one fitting member located within the hollow structure, wherein the outer end face of the fitting member is located within the outer end face of the end of the rigid shaft to which the fitting member belongs.

[0011] In some embodiments, the cleaning brush described above is The system further includes an end member that is positioned to be fitted and attached to the fitting member and has an assembly structure on the side away from the fitting member.

[0012] In some embodiments, the end member includes a guide rod, and the end of the guide rod that is separated from the assembly structure has a guide portion, which is arranged to form a rotational fitting structure with the fitting member.

[0013] In some embodiments, at least one end of the rigid shaft forms a accommodating space located between the outer wall of the guide rod and the 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 with the shape of the guide portion, and the fitting portion has a helical groove that accommodates the guide portion.

[0015] In some embodiments, the end member further includes a guide shaft, the guide shaft extending away from the guide rod in a direction away from the assembly structure, the end of the guide shaft having a locking member away from the guide rod, and the end of the fitting member having a locking portion away from the opening of the housing space, the locking portion and the locking member constituting a locking fitting structure.

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

[0017] In some embodiments, the end member includes a first end member and a second end member, which are fitted and attached to the fitting members of the first and second ends, respectively. The guide portion of the end member on the first side and the guide portion of the end member on the second side differ in at least one of the following: shape, number, and size.

[0018] In some embodiments, the guide portion of the end member on the first side and the guide portion 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 end member on the first side, which is away from the guide rod, has a regular polygon, 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.

[0020] Some embodiments of the present disclosure further provide an automatic cleaning device including two cleaning brushes described in any one of the 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 Description of the Drawings

[0021] The drawings herein are incorporated into the specification and form a part of the specification, showing the embodiments applicable to the present disclosure, and are used in conjunction with the specification to interpret the principles of the present disclosure. Of course, the drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative efforts. In the figures, [Figure 1] It is a schematic structural view of an exemplary automatic cleaning device provided by the present disclosure. [Figure 2] It is a schematic bottom surface structure view of the automatic cleaning device in FIG. 1. [Figure 3] It is an exploded three-dimensional structure view of an example of the cleaning brush provided by the present disclosure. [Figure 4] It is a schematic cross-sectional structure view of the cleaning brush in FIG. 3. [Figure 5] It is a three-dimensional structure view of an example of the end member of the cleaning brush in FIG. 3. [Figure 6] It is a schematic three-dimensional structure view of an example of the fitting member of the shaft in FIG. 3. [Figure 7] It is a schematic three-dimensional structure view of an example of the guide fitting structure of the fitting member between the end member and the shaft in FIG. 3. [Figure 8] It is an exploded structure view of the guide fitting structure in FIG. 7. [Figure 9] It is a schematic exploded three-dimensional structure view of another example of the cleaning brush provided by the present disclosure. [Figure 10]Figure 9 is a local structural exploded view of the cleaning brush from one angle. [Figure 11] Figure 9 is a local structural exploded view of the cleaning brush from another angle. [Figure 12] This is a schematic cross-sectional view of a cleaning module provided in some embodiments of this disclosure. [Modes for carrying out the invention]

[0022] To further clarify the technical proposal and technical effects of this disclosure, the disclosure will be described in more detail below with reference to the drawings. However, the embodiments described are, of course, only a part of the embodiments of this disclosure, not all of them. All other embodiments that a person skilled in the art could obtain without creative work based on the embodiments of this disclosure are all within the scope of protection of this disclosure.

[0023] The terms used in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the disclosure. The singular terms “one kind,” “the said,” and “the said” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural, and “plural kind” generally includes at least two kinds.

[0024] To ensure understanding, the terms "and / or" as used herein merely describe the relationship between related objects, indicating that three types of relationships are possible. For example, A and / or B can represent three situations: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, the letter " / " in this specification generally indicates that the preceding and succeeding related objects are in an "or" relationship.

[0025] It should be further explained that the terms “include,” “incorporate,” or any other variation thereof are intended to encompass non-exclusive inclusion, thereby including not only those elements but also other elements not explicitly listed, or elements specific to such goods or devices. Unless otherwise specified, an element limited by the phrase “includes one…” does not preclude the presence of other similar elements in the goods or devices containing the aforementioned element.

[0026] To further optimize the structure of a cleaning brush, the present disclosure provides a cleaning brush comprising a rigid shaft having a first end and a second end opposite in the axial direction, and a brush member coaxially fitted to the outside of the rigid shaft, wherein a rigid filler is provided between the brush member and the rigid shaft, or no filler is provided.

[0027] The cleaning brush of this disclosure forms a rigid roller brush by directly fitting the brush member to the outside of a rigid shaft or by fitting the brush member after fitting a rigid filler. The rigid roller brush significantly simplifies the manufacturing process and cost of the roller brush, and also allows for easier control of the amount of interference between the brush component and the ground, thereby improving the overall cleaning efficiency of the ground.

[0028] The cleaning brush of this disclosure has a wide range of applications and is particularly applicable to automated cleaning equipment, which may be a self-propelled robot such as a mop robot, robotic vacuum cleaner, vacuum cleaner-mop robot, and large commercial floor cleaning machine, in which case the automated 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 surface of a building's glass, with the glass being the operating surface; and the automated cleaning equipment may be a pipe-propelled robot, in which case the automated cleaning equipment operates on the inner surface of a pipe, with the inner surface of the pipe being the operating surface. These are for illustrative purposes only.

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

[0030] Selective embodiments of this disclosure will be described in detail below with reference to the drawings.

[0031] Figure 1 is a schematic diagram of the structure of an automated cleaning device according to one exemplary embodiment, and Figure 2 is a schematic diagram of the bottom structure of the automated cleaning device in Figure 1. As shown in Figures 1 and 2, the automated cleaning device may be a vacuum suction robot, a mop / scrub robot, a window climbing robot, etc., and may include a mobile platform 1000, a sensing system 2000, a control system (not shown), a drive system 3000, an energy system (not shown), a human-machine interaction system 4000, and a cleaning module 5000. Here, the mobile platform 1000 may be arranged so as to move automatically along the target direction on an operating surface. The operating surface may be the surface to be cleaned by the automated cleaning device. In some embodiments, the automatic cleaning device may be a mop robot, which operates on the ground, where the ground is the operating surface; the automatic cleaning device may be a window cleaning robot, which operates on the outer surface of building glass, where the glass is the operating surface; and the automatic cleaning device may be a pipe cleaning robot, which operates on the inner surface of pipes, where the inner surface of pipes is the operating surface. For purely illustrative purposes, the following description in this application uses 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. An autonomous mobile platform means that the mobile platform 1000 itself can automatically and adaptively make operational decisions based on unexpected environmental inputs, while a non-autonomous mobile platform itself cannot adaptively make operational decisions based on unexpected environmental inputs, but can execute a predetermined program or operate according to certain logic. Accordingly, if the mobile platform 1000 is an autonomous mobile platform, the target direction may be determined autonomously by the automatic cleaning equipment, and if the mobile platform 1000 is a non-autonomous mobile platform, the target direction may be set by the 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 in the front part of the mobile platform 1000, a cliff sensor (not shown) located at the bottom of the mobile platform, and sensor devices such as an ultrasonic sensor (not shown), an infrared sensor (not shown), a magnetometer (not shown), an accelerometer (not shown), a gyroscope (not shown), and an odometer (not shown), which provide the control system with various position information and operating state information of the machine.

[0034] For the sake of explanation, directions are defined as follows, and the automatic cleaning machine can be located by defining three mutually perpendicular axes: the lateral axis Y, the longitudinal axis X, and the vertical axis Z. The direction indicated by the arrow along the longitudinal axis X is marked as "rear direction," and the direction opposite to the direction of the arrow along the longitudinal axis X is marked as "forward direction." The lateral axis Y is substantially the direction along the width of the automatic cleaning machine, and the direction of the arrow along the lateral axis Y is marked as "left direction," and the direction opposite to the direction of the arrow along the lateral axis Y is marked as "right direction." The vertical axis Z is the direction extending upward from the bottom surface of the automatic cleaning machine. As shown in Figure 1, the direction along the longitudinal axis X is defined as the second direction, which is, for example, the forward or rear direction, and the direction perpendicular to the second direction in the horizontal plane is the first direction, which is, for example, the 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 and an application processor that communicates with non-temporary storage media such as a hard disk, flash memory, and random access memory. The application processor receives environmental information sensed by the multiple sensors transmitted from the sensing system, and, based on obstacle information fed back from the positioning device, uses a positioning algorithm such as SLAM to create a real-time map of the environment in which the automatic cleaning equipment is located. Based on the environmental information and the environmental map, it autonomously determines a travel path, and then controls the drive system 3000 based on the autonomously determined travel path to perform actions such as moving forward, backward, and / or steering. Furthermore, the control system can also decide whether to activate the cleaning module 5000 and 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 machine to travel across the ground based on specific distance and angle information such as x, y, and θ components. The drive system 3000 includes a drive wheel assembly, and the drive system 3000 can control the left and right wheels simultaneously. To control the machine's operation more precisely, it is preferable that the drive system 3000 includes a left drive wheel assembly and a right drive wheel assembly, respectively. The left and right drive wheel assemblies are installed symmetrically along a transverse axis defined by the moving platform 1000. To enable the automatic cleaning machine to operate more stably on the ground or to have stronger operating capabilities, the automatic cleaning machine may include one or more steering assemblies, which may be driven wheels or drive wheels, and their structural configuration may include, but is not limited to, swivel wheels, and the steering assembly may be located in front of the drive wheel assembly.

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

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

[0039] As shown in Figure 2, the cleaning module 5000 includes a dust box, a fan, and a main brush module. The main brush module cleans debris from the ground in front of the dust collection port between the main brush module and the dust box, and then the debris is drawn into the dust box by a suction-forced gas generated by the fan and passing through the dust box. The dust collection capacity of a vacuum cleaner can be characterized by its dust pickup efficiency (DPU), which is affected by the wind power utilization rate of the airflow path arranged in the dust collection port, dust box, fan, air outlet, and connecting members between the four, and is also affected by the type and output of the fan, making it a complex system design problem. Compared to a typical plug-in vacuum cleaner, improved dust collection capacity is of greater significance for energy-constrained automatic cleaning equipment. Improved dust collection capacity directly and effectively reduces energy requirements; that is, a machine that can clean 80 square meters of ground on a single charge can evolve to clean 180 square meters or more on a single charge. Furthermore, reducing the number of charging cycles significantly increases the battery's lifespan, reducing how often users need to replace batteries. More intuitively and importantly, improved dust removal capabilities are the most noticeable and important user experience, allowing users to directly determine whether the cleaning / wiping is effective.

[0040] Figure 2 is a schematic diagram of the bottom structure of the automatic cleaning device in Figure 1. As shown in Figure 2, the automatic cleaning device includes a mobile platform 1000, which is positioned to move freely on the operating surface. A cleaning module 5000 is installed at the bottom of the mobile platform 1000, and the cleaning module 5000 is positioned to clean the operating surface. The cleaning module 5000 includes a drive unit 5100, a roller brush frame 5200, and a roller brush 5300 assembled within the roller brush frame 5200. The drive unit 5100 provides forward or reverse driving force and applies the driving force 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] As shown in Figure 2, the roller brush frame 5200 is provided with a front cleaning brush mounting position 5211 and a rear cleaning brush mounting position 5212 for housing the cleaning roller brush. The front cleaning brush mounting position 5211 has a first end 52111 and a second end 52112 opposite the first end 52111, with one end of the first roller brush 100 engaged and fixed to the first end 52111, and the other end of the first roller brush engaged and fixed to the second end 52112. In some embodiments, the front cleaning brush mounting position 5211 is an elongated groove structure in the moving platform, and the elongated groove structure extends along a first direction. The rear cleaning brush mounting position 5212 has a third end 52121 and a fourth end 52122 opposite the third end 52121. In some embodiments, the structure of the rear cleaning brush mounting position 5212 and the front cleaning brush mounting position 5211 are basically the same, for example, an elongated groove structure in a moving platform, the elongated groove structure extending along the first direction, and the second roller brush can be mounted in the elongated groove of the rear cleaning brush mounting position 5212 through the opening of the elongated groove structure. Here, the two elongated groove structures are parallel to each other in the second direction. The shape and size of the elongated groove structure are not limited and only need to accommodate at least a portion of the first roller brush and the second roller brush. The first end of the front cleaning brush mounting position 5211 and the third end of the rear cleaning brush mounting position 5212 are located on one side of the front-to-rear axis X-axis, while the second end of the front cleaning brush mounting position 5211 and the fourth end of the rear cleaning brush mounting position 5212 are located on the other side of the front-to-rear axis X-axis.

[0042] For the purposes of explanation, in each of the following embodiments of this disclosure, we will explain in detail, using as an example the case that the elongated groove structure close to the steering wheel in the automatic cleaning device is designated as the front cleaning brush mounting position 5211, and the elongated groove structure away from the steering wheel is designated as the rear cleaning brush mounting position 5212. Of course, the reverse is also possible.

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

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

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

[0046] Referring to Figures 3 to 8, the cleaning brush 200 includes a shaft 210 having a first end 211 and a second end 212 facing each other along the axial direction, with 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 circumference of the shaft 210; and an end member 220 arranged to be fitted and attached to the fitting member 213, 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 if the end member 220 is an end member located on the drive side, i.e., if the end member 220 is a first-side end member 220' connected to the drive unit of the cleaning module, then the assembly structure 221 is, for example, a transmission structure 221', and if the end member 220 is an end member located on the driven side, i.e., if the end member 220 is a second-side end member 220'' opposite the first-side end member 220', then 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 explained, mainly using the drive-side end member as an example, and the connection relationship between the driven-side end member and the shaft will be similar.

[0049] As shown in Figure 4, a housing space 214 is provided on the end face of the end portion where the fitting member 213 is located, facing the end member 220. The fitting member 213 is housed in the housing space 214, and a portion of the end member 220 is inserted into the housing space 214 and fitted into the fitting member 213 for attachment.

[0050] Specifically, the end face of the fitting member 213 that is close to the assembly structure 221 is further away from the assembly structure 221 with respect to the opening 2141 of the housing space 214, as can be seen in Figure 4.

[0051] Selectively, the end face of the brush member 230 adjacent to the assembly structure 221 is flush with the opening 2141 of the housing space 214, as can be seen in detail in Figure 4. On the one hand, this effectively supports the end of the brush member and maintains the necessary strength when cleaning the ground, while on the other hand, the brush member effectively protects the mounting and fitting three-dimensional structure, such as the core rod and internal fitting members, preventing a decrease in user experience due to collision damage.

[0052] As shown in Figure 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 fitting structure with the fitting 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 rotational direction, and specifically, it is a spiral shape that extends spirally along the outer circumferential surface of the guide rod 222 (i.e., it rotates and extends spirally), thereby giving the guide portion 2221 a rotational direction, for example, a clockwise (or counterclockwise) rotation around the axis of the shaft 210.

[0054] Referring to Figures 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 such that the guide portions 2221 form a rotational fitting structure with the fitting member 213, as can be seen from Figures 4 and 7.

[0055] In the example shown in Figure 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 separated from the assembly structure 221.

[0056] Specifically, there are multiple guide sections 2221. In the example in Figure 5, there are five guide sections 2221, and these five guide sections 2221 are all the same size.

[0057] As should be explained, in other examples, the number of guide sections may also be three, four, six or more, and the size of the guide sections may also vary. The above is merely an example of a selectable design and should not be understood as limiting the disclosure. Furthermore, regarding the method of forming the guide sections, the guide sections may also be grooves formed by etching inward from the outer circumferential surface of the guide rod. The above is merely an example of a selectable design and should not be understood as limiting the disclosure. Selectively, the guide section 2221 At least one of the following is different: shape, number, and size.

[0058] Furthermore, the end member 220 further includes a guide shaft 223, the guide shaft 223 extending away from the guide rod 222 and the assembly structure 221, and having 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 that is close 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 its outer circumferential surface, the locking member 2231 being, for example, an annular groove, thereby forming a locking and fitting structure between the locking member 2231 and the fitting member 213.

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

[0062] Specifically, the fitting member 213 includes a main body portion 2130, the main body portion 2130 has a cavity, the main body portion 2130 includes a fitting portion 2131 installed inside the cavity, the fitting portion 2131 is a helical groove extending along the inner wall of the cavity, the fitting portion 2131 and the guide portion 2221 form a rotational fitting structure, thereby forming a rotational fitting mechanism between the guide rod of the end member and the fitting member, refer to Figure 7 for details.

[0063] In this example, the fitting portion 2131 The number of guides 2221 It is the same as the number, for example, 5.

[0064] Regarding the shape of the mating portion, in other examples, the mating portion may also be a groove, and the guide portion may be a protrusion. The number of mating portions may be three, four, six, or more, provided that the number of guide portions is equal to the number of mating portions, and the above is described merely as an optional example and should not be understood as limiting the disclosure.

[0065] By adding a guide portion to the outer circumferential surface of the guide rod, the guide rod of the end member and the fitting member of the shaft form a rotational fitting structure, enabling effective guide installation, achieving an effective foolproof mounting structure, improving the ease of installation of the end member, and improving the stability of the mounting structure. By fitting the rotational fitting structure formed by the guide rod of the end member and the fitting member inside the shaft, and the locking fitting structure formed by the guide shaft and the fitting member, the guide can be installed more effectively, achieving a more effective foolproof mounting structure, further improving the ease of installation of the end member, and further improving the stability of the mounting structure.

[0066] In the example shown in Figure 6, the fitting member 213 includes an extended portion 2132 that is connected to the main body portion 2130 and extends outward from the main body portion 2130, wherein the extended portion 2132 is closer to the center of the shaft 210 than the main body portion 2130, and the outer diameter of the extended portion 2132 is smaller than the outer diameter of the main body portion 2130.

[0067] As shown in Figures 7 and 8, a plurality of ribs 21321 are provided uniformly distributed on the outer circumferential surface of the extended portion 2132, thereby forming an uneven surface on the outer circumferential surface of the extended portion 2132. This is used to form a fitting structure that corresponds to the inside of the shaft 210 (i.e., the shape of the inside of the shaft), thereby increasing the contact surface between the fitting member 213 and the inside of the shaft 210. This is advantageous for bonding the fitting member 213 into the housing space 214 of the shaft 210, increasing the bonding strength of the coupling structure between the fitting member 213 and the shaft 210, and making the mounting more stable.

[0068] It should be noted that the coupling structure between the fitting member 213 and the interior of the shaft 210 may also be a stepped fitting structure or the like. In other embodiments, the entire assembly or at least a portion of the fitting member 213 may also be integrally molded with the shaft 210. The above is described merely as an optional example and should not be understood as limiting the present disclosure.

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

[0070] In the example shown in Figure 3, the end member 220 is equipped with a blocking structure 225 to prevent the wrapped material from extending excessively away from the cleaning brush. The blocking structure 225 is shaftIt is installed on the side closer to the assembly structure 221 than 210 (i.e., the side further away from the shaft center).

[0071] Specifically, the outer diameter of the above-mentioned blocking structure 225 is as follows: shaft Larger than the outer diameter of 210, the blocking structure 225 is separated from the first end 211 of the shaft 210 by a certain distance, as can be seen in Figures 7 and 8.

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

[0073] In another example, in the cleaning brush 200 shown in Figure 9, the end members 220 include a first end member 220' and a second end member 220'', which are fitted and attached to the fitting members 213 of the first end 211 and second end 212 of the shaft 210, respectively, the shaft 210 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. Selectively, 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 first end member 220' (i.e., the end member 220 in Figure 4) and the second guide portion 2221'' of the second end member 220'' differ in at least one of their shape, number, and size.

[0075] In one selective embodiment, the shape and size of the first guide portion 2221' of the first end member 220' and the shape and size of the second guide portion 2221' of the second end member 220'' are the same, the number of the first guide portions 2221' of the first end member 220' is greater than the number of the second guide portions 2221' of the second end member 220'', and the number of the second guide portions 2221' of the second end member 220'' is not a divisor of the number of the first guide portions 2221' of the first end member 220'. For example, the number of the first guide portions 2221' of the first end member 220' is 5, and the number of the second guide portions 2221' of the second end member 220'' is There are two.

[0076] As shown in Figures 9 and 10, the first end member 220' (i.e., the end member 220 located on the drive side, the left end shown in Figure 10) is the first end of the shaft 210. 211 The end member 220' on the first side includes a transmission structure 221', the transmission structure 221' is located closer to the outside than the first blocking structure 225', and the end face shape of the transmission structure 221' is polygonal, for example, a regular polygon. structure 221' is connected to the drive mechanism of the automatic cleaning equipment.

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

[0078] It should be explained that in this example, the brush component 232 includes at least one first brush component of a certain size, for example, five sets of brush components, and each set of brush components includes two first brush components of different sizes, for example, the first brush components being V-shaped and spiral-shaped. The brush member 230 in this example is substantially the same as the brush member 230 in the example in Figure 3, so the explanation of the similar parts will be omitted.

[0079] Specifically, the number of first guide portions 2221' on the first side end member 220' is a divisor of the number of brush components 232. For example, if the number of first guide portions 2221' is 5, then the number of brush components 232 is a multiple of 5, such as 5 sets, 10 sets, etc., where each set contains 2 or more brush components.

[0080] When the roller brush is attached to the roller brush frame, the brush components 232 have a specific mounting angle, which is advantageous for matching interference between the two corresponding brush components.

[0081] In the example shown in Figure 9, there are five first guide sections 2221', and there are five sets of the brush components 232.

[0082] As shown in Figure 10, the second 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 Figure 10), and the second end member 220'' includes an assembly structure (specifically, a bearing structure 221''), the bearing structure 221'' is rotatable relative to the shaft 210, and the rotation of the bearing structure 221'' relative to the shaft connects to other structures of the cleaning equipment (e.g., the machine body).

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

[0084] Regarding what needs to be explained, the shaft and brush member in the example in Figure 8 are almost the same in structure as the shaft and brush member in the example in Figure 3, so the explanation of the similar parts will be omitted. Also, the first fitting member 213' in Figure 9 is almost the same in structure as the fitting member 213 in Figure 6, so the explanation of the similar parts will be omitted.

[0085] In the example shown in Figure 9, the end member 220' on the first side 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 installed on the first guide rod 222', and the first guide portions 2221' are protrusions formed by etching a groove from the outer circumferential surface of the first guide rod 222'. The first guide portions 2221' are of the first guide rod 222' transmission It is formed at one end that separates from structure 221'.

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

[0087] If, selectively, the shape of the first guide portion 2221' of the end member 220' on the first side and the shape of the second guide portion 2221' of the end member 220'' on the second side are the same, then 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 different.

[0088] Selectively, the number of first guide portions 2221' on the first end member 220' is odd, and the number of second guide portions 2221'' on the second end member 220'' is even. Preferably, the number of first guide portions 2221' on the first end member 220' and the number of second guide portions 2221'' on the second end member 220'' are not divisors of each other, thereby ensuring that the end member on the side with a relatively small number of guide portions cannot be mistakenly attached to the fitting member corresponding to the end member on the side with a relatively large number of guide portions, thereby ensuring that the end members on either side cannot be mistakenly attached, and achieving 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''. There are two of these second guide portions 2221'', and each second guide portion 2221'' is a protrusion formed by etching a groove from the outer circumferential 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 fitting member 213'' is connected to the main body 2130'' and includes an extended portion 2132'' that extends outward from the main body 2130'', and the outer diameter of the main body 2130'' is greater than the outer diameter of the extended portion 2132''. The main body 2130'' includes a cavity, and the main body 2130'' includes a fitting portion 2131'' installed inside the cavity, and the fitting portion 2131'' is a helical groove that extends along the inner wall of the cavity, and the fitting portion 2131'' and the second guide portion 2221'' form a rotational fitting structure, thereby forming a rotational fitting mechanism between the guide rod of the end member on the second side and the fitting member.

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

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

[0093] In the example in Figure 9, the first 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 onto the first guide rod 222', and the other end of the first guide shaft 223' is fitted onto the first end department It is fitted into the first guide hole, and the first guide hole is the first end department It is installed coaxially on the end face.

[0094] Assembly structure of the end member 220'' on the second side as described above construction and The second guide rod 222'' is a separate structure. 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 the second guide hole of the second end 212, and the second guide hole is opened coaxially on the end face of the first end 211.

[0095] Selectively, a blocking structure 225' is installed 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 installed 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 winding from extending excessively away from the brush member 230.

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

[0097] When installed in this manner and the roller brush is attached to the roller brush frame, the brush component 232 can have a specific mounting angle. When multiple roller brushes of similar structures exist, such a design is very advantageous for forming a mating relationship between the blades of multiple roller brushes. In particular, when it is necessary to align the blades of two roller brushes, this ensures blade alignment, enabling synchronous operation, preventing interference, or intersecting in a specific orientation, thereby meeting the demands for different cleaning effects.

[0098] Compared to conventional technology, the cleaning brush of this disclosure forms a rotational fitting structure by connecting the guide portion of the end member's guide rod with the fitting member inside the shaft, and engages with a locking fitting structure formed by the guide shaft and the fitting member. This allows for more effective guide mounting, a more effective foolproof mounting structure, further improvements in the ease of mounting the end member, and further improvements in the stability of the mounting structure.

[0099] Furthermore, by installing a blocking structure on the end member and directly wrapping the material around it on the blocking structure of the end member, it is possible to effectively prevent the material from wrapping around the shaft.

[0100] This disclosure further provides another embodiment that builds upon the above embodiments, the embodiment of which further provides an automatic cleaning device comprising two cleaning brushes as described in any of the above embodiments, wherein the brush members of the two cleaning brushes are mirror-symmetric, and the assembly structure of the end members of the two cleaning brushes is mirror-symmetric. The interpretation of the same name is the same as in the above embodiments, and for example, the structure of a single cleaning brush has the same technical effect as in the above embodiments, and is not described here.

[0101] In some embodiments, as shown in Figure 12, in order to distinguish the structures of two roller brushes (referred to as cleaning brushes above), in this embodiment, they will be described as "first" and "second" based on the above names, 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 includes a first shaft 110, a first filler 120 and a first brush member 130, wherein the first filler 120 is positioned 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 positioned to be fitted onto the first shaft 110 so as to be coaxial with the first shaft 110, and the second roller brush 5300 is installed in a direction parallel to the first roller brush 100 and includes a second shaft 210 and a second filler 250 and a second roller brush including a second brush member 230 300 and the second filler mentioned above 250 The second filler mentioned above 250 The second roller brush is positioned such that it is fitted onto the second shaft 210 so as to be coaxial with the second shaft 210, and the second brush member 230 is positioned such that it is fitted onto the second shaft 210 so as to be coaxial with the second shaft 210. 300 and, including, where the first filler 120 is a rigid member, and the second filler 250 These are rigid members. First roller brush 100 and second roller brush 300 An incompressible rigid filler is installed, and a first roller brush 100 and a second roller brush 300 The amount of interference with the ground is precisely controlled, and the first roller brush 100 and the second roller brush 300 The precise assembly between the roller brush frame 5200 and the first roller brush 100 and the second roller brush 300The two have opposite directions of rotation relative to each other, thereby stirring up debris on the operating surface when performing a cleaning task, or expelling debris from the dust box when performing a dust collection task. For explanation purposes, in this embodiment, the first roller brush 100 may be the "front roller brush" or the "rear roller brush", and the second roller brush 300 Similarly, this may be the "front roller brush" or the "rear roller brush" as described above, and is not limited to either.

[0102] In some embodiments, the plane on which the lowest point of the first filler 120 is located is the second filler 250 The lowest point of the first filler 120 is higher than the plane where it is located, and the first roller brush 100 is a hard roller brush, and there is no cushioning by an elastic material such as a sponge, so the impact noise against the ground (especially hard ground) is greater than that of a soft roller brush, and therefore the plane where the lowest point of the first filler 120 is located is higher than that of the second filler 250 By setting the lowest point of the roller brush higher than the plane on which it 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 the second filler 250 The lowest point is lower than the plane on which it is located. That is, the assembly position of the first roller brush is lower than the assembly position of the second roller brush, and because the striking force of the first roller brush (pre-hard roller brush) is greater, the assembly position of the first roller brush is lowered even further to further strengthen the effect of the first roller brush striking dust first. At this time, the hardness of the first brush component may be set to be less than the hardness 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. The first roller brush 100 is a hard roller brush and does not have cushioning from an elastic material such as a sponge. Therefore, the noise produced when it strikes the ground (especially hard ground) is greater than that produced by a soft roller brush. For this reason, by setting the assembly position of the first roller brush higher than the assembly position of the second roller brush, the sound produced when the first roller brush 100 strikes 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 the assembly position of the second roller brush. Because the striking force of the first roller brush (pre-hard roller brush) is greater, the assembly position of the first roller brush is lowered even further to further enhance the effect of the first roller brush striking dust first. At this time, the hardness of the first brush component may be set to be less than the hardness 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 automated cleaning equipment provided by the embodiments of this disclosure significantly simplifies the manufacturing process and cost of roller brushes by installing a double rigid roller brush structure consisting of a rigid first roller brush and a second roller brush. Furthermore, the rigid roller brush structure allows for easier control of the amount of interference between the brush components and the ground, thereby improving the overall cleaning efficiency of the ground.

[0107] Finally, it should be noted that each embodiment in this specification is described in an incremental manner, with emphasis on the differences between each embodiment and the others, and that any identical or similar parts between embodiments should be referenced to one another. As for the systems or apparatus disclosed in the embodiments, their description is relatively straightforward, as they correspond to the methods disclosed in the embodiments, and relevant parts should be referred to the description in the method section.

[0108] The above embodiments are used solely to illustrate the technical concepts of the present disclosure and are not intended to limit them. While the present disclosure has been described in detail with reference to the embodiments described above, those skilled in the art can still modify the technical concepts described in the above embodiments or substitute some of their technical features equally, but such modifications or substitutions should be understood not to cause the essence of the corresponding technical concepts to deviate from the spirit and scope of the technical concepts of the embodiments of the present disclosure.

Claims

1. It is a cleaning brush, A rigid shaft having a first end and a second end opposite in the axial direction, The rigid shaft includes a brush member that is coaxially fitted onto the outside of the rigid shaft, The brush member and the rigid shaft are either provided with a rigid filler or not provided with a filler, characterized in that Cleaning brush.

2. The aforementioned brush member is A flexible cylindrical member fitted onto the outer circumference of the rigid shaft, wherein a rigid filler is provided between the flexible cylindrical member and the rigid shaft, or no filler is provided. Including a flexible cylindrical member, The cleaning brush according to claim 1.

3. The ends of the cylindrical member do not extend beyond the first and second ends of the rigid shaft. The cleaning brush according to claim 2.

4. The ends of the cylindrical member are flush with the first and second ends of the rigid shaft. The cleaning brush according to claim 3.

5. The aforementioned brush member is The further includes a plurality of brush components extending from the outer surface of the cylindrical member in a direction away from the cylindrical member, The cleaning brush according to claim 2.

6. The rigid shaft further includes a hollow structure that penetrates the rigid shaft and at least one fitting member located within the hollow structure, wherein the outer end face of the fitting member is located within the outer end face of the end of the rigid shaft corresponding to the fitting member. A cleaning brush according to any one of claims 1 to 5.

7. The aforementioned cleaning brush is The end member further includes an end member that is positioned to be fitted and attached to the fitting member and has an assembly structure on the side away from the fitting member, The cleaning brush according to claim 6.

8. The end member includes a guide rod, and has a guide portion at the end of the guide rod that is separated from the assembly structure, and the guide portion is arranged to form a rotational fitting structure with the fitting member. The cleaning brush according to claim 7.

9. At least one end of the first or second end of the rigid shaft forms a accommodating space located between the outer wall of the guide rod and the inner wall of the rigid shaft. The cleaning brush according to 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 with the shape of the guide portion, and the fitting portion has a helical groove that accommodates the guide portion. The cleaning brush according to claim 8.

11. The end member further includes a guide shaft, the guide shaft extends away from the guide rod in a direction away from the assembly structure, and has a locking member at the end of the guide shaft away from the guide rod. A locking portion is provided at the end of the fitting member that is separated from the opening of the housing space, and the locking portion constitutes a locking fitting structure with the locking member. The cleaning brush according to claim 9.

12. The number of the guide sections is multiple, and the multiple guide sections are uniformly distributed in the circumferential direction of the guide rod. The cleaning brush according to claim 8.

13. The end member includes a first end member and a second end member, which are fitted and attached to the fitting members of the first and second ends, respectively. The guide portion of the end member on the first side and the guide portion of the end member on the second side differ in at least one of the following: shape, number, and size. The guide portion of the first end member and the guide portion of the second end member are the same in shape and size, the number of guide portions of the first end member is greater than the number of guide portions of the second end member, and the number of guide portions of the second end member is not a divisor of the number of guide portions of the first end member. The cleaning brush according to claim 8.

14. The end face of the assembly structure of the first end member, away from the guide rod, has a regular polygon, and the number of sides of the regular polygon is the same as the number of guide portions of the first end member. The cleaning brush according to claim 13.

15. An automatic cleaning device comprising two cleaning brushes according to any one of claims 1 to 5, The brush components of the two cleaning brushes are mirror-symmetric, and the assembly structure of the end components of the two cleaning brushes is mirror-symmetric. Automatic cleaning equipment.

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