Roller brush apparatus and cleaning device

Abstract

The present application belongs to the technical field of cleaning. Disclosed are a roller brush apparatus and a cleaning device. The roller brush device comprises a housing assembly, a first roller brush and a second roller brush, wherein the second roller brush and the first roller brush are spaced apart on the housing assembly in a first direction of the housing assembly, and a gap can be formed between the second roller brush and the first roller brush in the first direction; and at least one of the first roller brush and the second roller brush can move in the first direction to adjust the width of the gap between the first roller brush and the second roller brush in the first direction. In the roller brush device provided by the present application, on the one hand, the gap can be increased to reduce the constraint of the roller brushes on hair to prevent hair from becoming entangled around the roller brushes, so as to enable the roller brushes to rotate normally, thereby improving the cleaning effect; and on the other hand, the gap can be reduced to increase the contact area between the roller brushes and the surface to be cleaned, so that the gap is smaller, so as to reduce the probability of missed scanning during cleaning, thereby improving the cleaning effect.

Description

Roller brush device and cleaning equipment

[0001] This application claims priority to Chinese applications filed on December 25, 2024, with application numbers 202411930039.3, and filed on January 22, 2025, with application numbers 202520157586.6 and 202520157670.8, the entire contents of which are incorporated herein by reference. [Technical Field]

[0002] This application relates to the field of cleaning technology, and in particular to a roller brush device and cleaning equipment. [Background Technology]

[0003] Cleaning equipment (such as robotic vacuum cleaners) is equipped with a roller brush device. When the roller brush rotates, it can sweep up dust, debris, hair, and other garbage from the surface to be cleaned, and carry the garbage into the dustbin. In related technologies, the roller brush is prone to getting tangled in hair when sweeping, which causes the roller brush speed to decrease or even stop rotating, affecting the cleaning effect. [Summary of the Invention]

[0004] This application provides a roller brush device and cleaning equipment that can solve the problem of reduced cleaning effect caused by hair getting tangled in the roller brush.

[0005] To address the aforementioned technical problems, this application provides a roller brush device for use in floor cleaning equipment. The roller brush device includes a housing assembly, a first roller brush, and a second roller brush. The second roller brush and the first roller brush are spaced apart on the housing assembly along a first direction, and a gap may be formed between the second roller brush and the first roller brush in the first direction. At least one of the first roller brush and the second roller brush can move along the first direction to adjust the width of the gap between the first roller brush and the second roller brush in the first direction.

[0006] In another aspect, this application provides a roller brush device for floor cleaning equipment. The roller brush device includes a housing assembly and a first roller brush. The housing assembly has a receiving cavity in which the first roller brush is housed. The housing assembly has a first end wall and a second end wall disposed opposite to each other in a first direction. One end of the first roller brush is mounted on the first end wall, and the other end can form a gap with the second end wall in the first direction. At least one of the first roller brush and the second end wall can move along the first direction to adjust the width of the gap between the first roller brush and the second end wall in the first direction.

[0007] This application also provides a cleaning device, which includes a dust box and a roller brush device as described above. The roller brush device includes a housing assembly, the dust box is mounted on the housing assembly, the housing assembly is provided with an adsorption port, and the dust box is in communication with the adsorption port.

[0008] The roller brush device provided in this application has an adjustable gap width. On the one hand, by increasing the gap, the roller brush can reduce the constraint on hair, making it easier to pick up hair and prevent hair from getting tangled on the roller brush, allowing the roller brush to rotate normally and improving the cleaning effect. On the other hand, by decreasing the gap, the contact area between the roller brush and the surface to be cleaned can be increased, making the gap smaller and reducing the probability of missed cleaning during cleaning, thus improving the cleaning effect. [Attached Image Description]

[0009] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 is a schematic diagram of the assembly structure of an embodiment of the roller brush device provided in this application;

[0011] Figure 2 is an exploded structural diagram of an embodiment of the roller brush device provided in this application;

[0012] Figure 3 is a cross-sectional schematic diagram of an embodiment of the roller brush device provided in this application along a certain viewpoint;

[0013] Figure 4 is a structural schematic diagram of another embodiment of the roller brush device provided in this application;

[0014] Figure 5 is an exploded structural diagram of an embodiment of the first roller brush assembly provided in this application;

[0015] Figure 6 is a structural schematic diagram of an embodiment of the first drive shaft provided in this application;

[0016] Figure 7 is a structural schematic diagram of an embodiment of the first mounting component provided in this application;

[0017] Figure 8 is an exploded structural diagram of an embodiment of the first mounting component provided in this application;

[0018] Figure 9 is an exploded structural diagram of an embodiment of the second roller brush assembly provided in this application;

[0019] Figure 10 is a cross-sectional schematic diagram along a viewpoint of another embodiment of the roller brush device provided in this application.

[0020] Figure 11 is a schematic diagram of the structure of the roller brush device in one embodiment of this application;

[0021] Figure 12 is a schematic cross-sectional view of the roller brush device along the axis of rotation in one embodiment of this application;

[0022] Figure 13 is an enlarged structural diagram of point A in Figure 12;

[0023] Figure 14 is a schematic diagram of the comb teeth in one embodiment of this application;

[0024] Figure 15 is a schematic diagram of the structure of the roller brush assembly in one embodiment of this application;

[0025] Figure 16 is an enlarged structural diagram of point B in Figure 14;

[0026] Figure 17 is a schematic diagram of the structure of a cleaning device in one embodiment of this application;

[0027] Figure 18 is a schematic diagram of the structure of the roller brush device in one embodiment of this application;

[0028] Figure 19 is a schematic diagram of the mounting bracket and roller brush assembly in one embodiment of this application;

[0029] Figure 20 is a cross-sectional structural schematic diagram of the roller brush device in one embodiment of this application;

[0030] Figure 21 is a schematic diagram of the cover plate in one embodiment of this application;

[0031] Figure 22 is a schematic diagram of the structure of the roller brush device in another embodiment of this application;

[0032] Figure 23 is a schematic diagram of the mounting bracket and roller brush assembly in one embodiment of this application;

[0033] Figure 24 is a schematic diagram of the structure of the roller brush assembly and mounting bracket in one embodiment of this application;

[0034] Figure 25 is an enlarged structural diagram of point A in Figure 20;

[0035] Figure 26 is a schematic diagram of the structure of a cleaning device in one embodiment of this application.

Detailed Implementation Methods

[0036] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0037] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "first," "second," and "third" in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0038] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] This application provides a roller brush device for floor cleaning equipment. Referring to Figures 1-3, the roller brush device 100 may include a housing assembly 10, a first roller brush assembly 20, and a second roller brush assembly 30. The first roller brush assembly 20 and the second roller brush assembly 30 may be one, two, three, four, or more, respectively. The number of first roller brush assemblies 20 is equal to the number of second roller brush assemblies 30, that is, the first roller brush assemblies 20 and the second roller brush assemblies 30 are arranged in pairs. The housing assembly 10 is used to mount the first roller brush assembly 20 and the second roller brush assembly 30. The housing assembly 10 is provided with an adsorption port 15 and a cleaning port 16. The first roller brush assembly 20 and the second roller brush assembly 30 can contact the surface to be cleaned through the cleaning port 16 to sweep away dust, debris, hair, and other garbage from the surface. The negative pressure adsorption of the first roller brush assembly 20 and the second roller brush assembly 30 with the adsorption port 15 drives the garbage into a dust box. The housing assembly 10 has a first end wall 113 and a second end wall 114 disposed opposite each other in a first direction. For example, the first direction may be the length direction of the housing assembly 10, such as the X-axis direction in FIG3.

[0040] Please refer to Figures 1-3. The first roller brush assembly 20 includes a first roller brush 22, and the second roller brush assembly 30 includes a second roller brush 32. The first roller brush 22 and the second roller brush 32 are used to clean the surface to be cleaned. The second roller brush 32 and the first roller brush 22 are spaced apart on the housing assembly 10 along a first direction. Each first roller brush 22 corresponds to one second roller brush 32. Since the number of first roller brush assemblies 20 is equal to the number of second roller brush assemblies 30, the number of first roller brushes 22 is also equal to the number of second roller brushes 32, and the first roller brushes 22 and the second roller brushes 32 are arranged in pairs. A gap 17 can be formed between the second roller brush 32 and the first roller brush 22 in the first direction. That is, the first roller brush 22 and the second roller brush 32 are arranged in a double cantilever configuration, and the ends of the oppositely arranged first roller brush 22 and the ends of the second roller brush 32 do not contact each other. At least one of the first roller brush 22 and the second roller brush 32 can move along a first direction to adjust the width of the gap 17 between the first roller brush 22 and the second roller brush 32 in the first direction. In the initial state (when the user turns on the roller brush device 100) or in the working state, the gap 17 may not exist, that is, the width is adjusted to 0mm or close to 0mm; in the working state or self-cleaning state, the width of the gap 17 can vary between 0.01-20mm, for example, the width of the gap 17 is 0.01mm, 5mm, 8mm, 10mm, 15mm, 18mm or 20mm, etc. Setting the width of the gap 17 to be adjustable can, on the one hand, reduce the constraint of the roller brush on the hair by increasing the gap 17, making it easier to pick up the hair, thereby preventing the hair from getting tangled on the roller brush, allowing the roller brush to rotate normally, which can improve the cleaning effect; on the other hand, reduce the gap 17 by increasing the contact area between the roller brush and the surface to be cleaned, making the gap 17 smaller, thereby reducing the probability of missed cleaning during cleaning, which can improve the cleaning effect.

[0041] In one embodiment, as shown in Figures 1-3, the housing assembly 10 has a receiving cavity 14 and an adsorption port 15. The receiving cavity 14 communicates with the adsorption port 15. The first roller brush assembly 20 and the second roller brush assembly 30 are housed within the receiving cavity 14. The adsorption port 15 is positioned corresponding to the gap 17. Positioning the adsorption port 15 relative to the gap 17 allows the adsorption port 15 to be directly opposite the gap 17, or the distance between the adsorption port 15 and the gap 17 is small. This helps reduce the resistance of the first roller brush 22 and the second roller brush 32 to the air flowing through the adsorption port 15, thereby improving the cleaning effect.

[0042] In one embodiment, as shown in Figures 1 and 2, the roller brush device 100 further includes a drive assembly 40, which is connected to the first roller brush assembly 20 and the second roller brush assembly 30 respectively, thereby providing power to the first roller brush assembly 20 and the second roller brush assembly 30 during operation. The drive assembly 40 can be mounted on the housing assembly 10 to facilitate the drive assembly 40's connection with the roller brush assemblies. The drive assembly 40 may include a drive member 41 and a transmission member 42. The drive member 41 may include a motor, and the transmission member 42 may include one or more of the following: a drive shaft, a drive belt, and gears. There may be one or more drive assemblies 40; that is, multiple roller brush assemblies may share one drive assembly 40, or each roller brush assembly may have its own dedicated drive assembly 40.

[0043] The roller brush device 100 has a working state and a self-cleaning state. The working state can be the state in which the roller brush device 100 is cleaning the surface to be cleaned, and the self-cleaning state can be the state in which the roller brush device 100 is cleaning the residual debris on the roller brush.

[0044] The adjustment of gap 17 can be performed during the operation of the roller brush device 100. In one embodiment, as shown in FIG3, the roller brush device 100 includes an entanglement detection element 50, which is used to acquire entanglement information of the roller brush device 100 during operation. The roller brush device 100 is configured to adjust the width of gap 17 based on the entanglement information. By acquiring the entanglement information, the width of gap 17 can be adaptively adjusted to improve the cleaning effect. For example, during the operation of the roller brush device 100, when the entanglement information acquired by the entanglement detection element 50 indicates a high risk of the roller brush being entangled by hair, the gap 17 can be increased to reduce the constraint of the roller brush end on the hair, making it easier to remove the hair and prevent the hair from getting entangled on the roller brush, thereby improving the cleaning effect. When the entanglement information acquired by the entanglement detection element 50 indicates that the hair at gap 17 has been removed or there is little residue, the gap 17 can be decreased to increase the contact area between the roller brush and the surface to be cleaned, making the gap 17 smaller, reducing the probability of missed cleaning during cleaning, thereby improving the cleaning effect.

[0045] In one embodiment, the entanglement detection element 50 can be a video acquisition module, such as a camera, which can monitor the amount of hair on the roller brush to obtain entanglement information.

[0046] In another embodiment, the entanglement detection element 50 includes a speed sensor for detecting the rotational speed of the first roller brush 22. The speed sensor acquires entanglement information based on the rotational speed. For example, when the roller brush device 100 is in operation, if the speed sensor detects a decrease in the roller brush's rotational speed, it indicates that some hair that has not been sucked up is clogging the gap 17, and the risk of the roller brush being entangled by hair is relatively high. At this time, the gap 17 can be increased to reduce the constraint of the roller brush end on the hair, making it easier to suck up the hair and prevent the hair from getting entangled on the roller brush. When the speed sensor detects that the roller brush's rotational speed has returned to normal, it indicates that the hair at the gap 17 has been sucked up or there is little hair remaining. At this time, the gap 17 can be decreased to increase the contact area between the roller brush and the surface to be cleaned, making the gap 17 smaller and reducing the probability of missed cleaning during cleaning. By including a speed sensor in the entanglement detection element 50, the cost of the roller brush device 100 can be reduced because the cost of the speed sensor is relatively low.

[0047] In one embodiment, the roller brush device 100 is configured to adjust the width of the gap 17 when switching the state of the roller brush device 100. The width of the gap 17 in the self-cleaning state is greater than the width of the gap 17 in the working state. For example, the width of the gap 17 in the self-cleaning state is 5mm, 8mm, 10mm, or 15mm larger than the width in the working state. This configuration has two advantages: firstly, maintaining a smaller gap 17 in the working state can reduce the probability of missed cleaning, which is beneficial to improving the cleaning effect; secondly, the larger gap 17 in the self-cleaning state can reduce the constraint of the roller brush tip on the hair, making it easier to pick up the hair, which is beneficial to improving the self-cleaning effect. By cleaning the hair entangled on the roller brush through self-cleaning, the cleaning effect in the subsequent working state can be improved.

[0048] The housing assembly 10 may include multiple interconnected housings. In one embodiment, as shown in FIG4, the housing assembly 10 includes a movable portion 111 and a fixed portion 112. The movable portion 111 is movable relative to the fixed portion 112 along a first direction, and drives the first roller brush 22 and / or the second roller brush 32 to move synchronously to adjust the width of the gap 17. Exemplarily, the first roller brush 22 and the second roller brush 32 are connected to the movable portion 111, and the movable portion 111 is slidably connected to the fixed portion 112. The relative sliding of the movable portion 111 and the fixed portion 112 can drive the first roller brush 22 and / or the second roller brush 32 to move, thereby adjusting the width of the gap 17 and improving the cleaning effect.

[0049] The first roller brush 22 or the second roller brush 32 can be directly connected to the drive assembly 40 for transmission. The drive assembly 40 drives the first roller brush 22 or the second roller brush 32 to rotate and clean the surface to be cleaned. The first roller brush 22 and the second roller brush 32 can move relative to the housing assembly 10 in a first direction, that is, the first roller brush 22 and the second roller brush 32 can move simultaneously relative to the housing assembly 10 to adjust the width of the gap 17. In one embodiment, the first roller brush 22 or the second roller brush 32 is configured to move relative to the housing assembly 10 in the first direction to adjust the width of the gap 17. When it is necessary to adjust the gap 17, the first roller brush 22 or the second roller brush 32 moves relative to the housing assembly 10, which can adjust the width of the gap 17, thereby improving the cleaning effect. With this configuration, the width of the gap 17 can be adjusted by moving one of the first roller brush 22 and the second roller brush 32 relative to the housing assembly 10, while the other of the first roller brush 22 and the second roller brush 32 is relatively fixed relative to the housing assembly 10 in the first direction. This simplifies the structure of one of the roller brush assemblies, thereby reducing the cost of the product. The following explanation uses the example of the first roller brush 22 being movable relative to the housing assembly 10 to adjust the width of the gap 17.

[0050] The first roller brush 22 can also be connected to the drive assembly 40 via other components. Referring to Figures 3 and 5, in one embodiment, the first roller brush assembly 20 further includes a first drive shaft 21, through which the first roller brush 22 is mounted on the housing assembly 10. The first drive shaft 21 is used for transmission connection with the drive assembly 40, allowing the first roller brush 22 to be mounted on the first end wall 113 via the first drive shaft 21. The drive assembly 40 drives the first roller brush 22 to rotate and clean the surface to be cleaned.

[0051] The first drive shaft 21 can be fixedly connected to the first roller brush 22. A telescopic drive component is provided between the first drive shaft 21 and the housing assembly 10. When it is necessary to adjust the gap 17, the telescopic drive component drives the first drive shaft 21 to move relative to the housing assembly 10, thereby driving the first roller brush 22 to move relative to the housing assembly 10 to adjust the width of the gap 17.

[0052] The first drive shaft 21 may be partially fixed relative to the housing assembly 10 in a first direction. In one embodiment, as shown in FIG6, the first drive shaft 21 includes a mounting portion 212 and a telescopic portion 213. The mounting portion 212 is rotatably connected to the housing assembly 10 and is fixed relative to the housing assembly 10 in a first direction. The telescopic portion 213 is fixedly connected to the first roller brush 22 and can move relative to the mounting portion 212 in the first direction, thereby driving the first roller brush 22 to move synchronously to adjust the width of the gap 17. Limiting members may be provided on both sides of the mounting portion 212 connected to the housing assembly 10, so that the mounting portion 212 and the housing assembly 10 are fixed relative to each other in the first direction. The first drive shaft 21 is configured as a telescopic rod structure. When the gap 17 needs to be adjusted, the user can apply a pulling or pushing force to the telescopic part 213, thereby causing the telescopic part 213 to move relative to the mounting part 212 in the first direction. Alternatively, a telescopic drive member is provided between the telescopic part 213 and the mounting part 212. When the gap 17 needs to be adjusted, the telescopic drive member drives the telescopic part 213 to move relative to the mounting part 212 in the first direction, so that the first drive shaft 21 can extend or shorten in the extension direction, thereby driving the first roller brush 22 to move relative to the housing assembly 10 to adjust the width of the gap 17.

[0053] In one embodiment, the first drive shaft 21 is rotatably connected to the housing assembly 10, and the positions of the first drive shaft 21 and the housing assembly 10 are relatively fixed in a first direction. The first roller brush 22 is connected to the first drive shaft 21, and the first roller brush 22 can move relative to the first drive shaft 21 in a first direction. Specifically, the first roller brush 22 can move away from the first drive shaft 21 in the first direction to reduce the width of the gap 17; or, the first roller brush 22 can move closer to the first drive shaft 21 in the first direction to increase the width of the gap 17. Setting the positions of the first drive shaft 21 and the housing assembly 10 relatively fixed in the first direction, relative to the telescopic connection between the first drive shaft 21 and the housing assembly 10, simplifies the transmission connection between the first drive shaft 21 and the drive assembly 40, reduces the number of components in the roller brush device 100, and thus simplifies the structure of the roller brush device 100.

[0054] In one embodiment, the first roller brush 22 is configured to rotate relative to the first drive shaft 21, so that the first roller brush 22 can move relative to the first drive shaft 21 in a first direction. When it is necessary to adjust the gap 17, the relative rotation of the first roller brush 22 and the first drive shaft 21 can cause the first roller brush 22 to move relative to the first drive shaft 21 in the first direction, thereby adjusting the width of the gap 17.

[0055] In one embodiment, a first roller brush 22 is sleeved on the first drive shaft 21. At the connection between the first roller brush 22 and the first drive shaft 21, the first roller brush 22 has an internal thread, and the first drive shaft 21 has an external thread. When switching the state of the roller brush device 100, the drive assembly 40 drives the first drive shaft 21 to change its rotation direction. Due to the friction between the first roller brush 22 and the surface to be cleaned, the internal and external threads cooperate with each other, causing the first roller brush 22 to rotate relative to the first drive shaft 21 and move relative to the first drive shaft 21 in a first direction.

[0056] Referring to Figures 3-8, in one embodiment, a first roller brush 22 is sleeved outside a first drive shaft 21. A guide groove 235 is provided inside the first roller brush 22, spirally arranged from one end of the first roller brush 22 to the other. A protrusion 211 is provided on the first drive shaft 21, and the protrusion 211 is accommodated within the guide groove 235, allowing it to slide within the guide groove 235. The protrusion 211 can slide along the guide groove 235 under the drive of the first drive shaft 21, causing the first roller brush 22 to move relative to the first drive shaft 21 in a first direction. For example, when switching the state of the roller brush device 100, the first drive shaft 21 changes its rotation direction, and friction exists between the first roller brush 22 and the surface to be cleaned, allowing the protrusion 211 to slide along the guide groove 235 under the drive of the first drive shaft 21. The protrusion 211 is configured to cooperate with the guide groove 235 to realize the movement of the first roller brush 22. Since the protrusion 211 and the guide groove 235 have a larger size than the thread, the first roller brush assembly 20 can be easily processed.

[0057] The guide groove 235 can be directly set on the inner wall of the first roller brush 22, thereby reducing the number of parts in the first roller brush assembly 20.

[0058] In one embodiment, as shown in Figures 3-8, the first roller brush assembly 20 includes a first mounting member 23, a first roller brush 22 sleeved outside the first mounting member 23, one end of a first drive shaft 21 housed within the first mounting member 23, and a guide groove 235 disposed on the inner wall of the first mounting member 23. The first roller brush 22 is sleeved outside the first mounting member 23. Before the first mounting member 23 is assembled into the first roller brush 22, the first mounting member 23 and the first roller brush 22 are relatively independent. The first mounting member 23 and the first roller brush 22 can be processed independently. The material of the first mounting member 23 and the material of the first roller brush 22 can be different. For example, the first mounting member 23 can be made of metal or a plastic with high hardness, giving the first mounting member 23 high strength. The guide groove 235 is disposed on the inner wall of the first mounting member 23. On the one hand, the guide groove 235 is not easily deformed when the first roller brush 22 moves relative to the first drive shaft 21, which can improve the stability of the first roller brush 22 during movement. On the other hand, the protrusion 211 slides in the guide groove 235, and the high-strength material is not easily worn, which is beneficial to extending the overall service life of the first roller brush assembly 20. The first mounting member 23 can be disposed in the middle region of the length direction of the first roller brush 22. In one embodiment, the first mounting member 23 is disposed at the end of the first roller brush 22 near the second roller brush 32. With this arrangement, when the first roller brush 22 extends away from the end wall 113, only a part of the first roller brush 22 located at the mounting position of the first mounting member 23 is outside the first drive shaft 21. The first roller brush 22 and the first drive shaft 21 have a large overlap in size in the extension direction of the first drive shaft 21, and the first drive shaft 21 can provide better support for the first roller brush 22, thereby reducing the size of the cantilever end of the first roller brush 22 and reducing the deformation of the first roller brush 22 in the working state.

[0059] In one embodiment, as shown in FIG7, the first mounting member 23 includes an end cap 236 and a mounting body 237. A guide groove 235 is disposed on the inner wall of the mounting body 237. The end cap 236 is connected to one end of the mounting body 237, and the end cap 236 at least partially protrudes from the outer wall of the mounting body 237. The end cap 236 can be integrally formed with the mounting body 237 to form the first mounting member 23, or the end cap 236 and the mounting body 237 can be processed separately and then assembled to form the first mounting member 23. By setting the end cap 236 to at least partially protrude from the outer wall of the mounting body 237, on the one hand, the end cap 236 can be used for assembly positioning of the first mounting member 23, thereby improving assembly efficiency; on the other hand, the end cap 236 can restrict the displacement of the first roller brush 22 to prevent the first roller brush 22 from falling off.

[0060] A limiting structure may be provided on the first drive shaft 21 or the first roller brush 22 to limit the travel of the first roller brush 22 relative to the first drive shaft 21. Referring to Figure 8, in one embodiment, the first mounting member 23 is provided with a first limiting part 233 and a second limiting part 234 at both ends in a first direction to limit the travel of the first roller brush 22 relative to the first drive shaft 21, thereby controlling the width of the gap 17 within a preset range. The first limiting part 233 and the second limiting part 234 may be protrusions or flanges provided at both ends of the guide groove 235. By providing the limiting part on the first mounting member 23, the space of the first mounting member 23 can be fully utilized, the occupancy of the internal space of the accommodating cavity 14 can be reduced, and the size of the roller brush device 100 can be reduced.

[0061] The first mounting component 23 can be a one-piece structure. For example, the first mounting component 23 is integrally injection molded, with one end of the first mounting component 23 open. The first drive shaft 21, which has a protrusion 211, is inserted into the first mounting component 23 through the opening, and then a limiting part is assembled at the opening to restrict the movement stroke of the first roller brush 22.

[0062] In one embodiment, as shown in FIG8, the first mounting member 23 includes a first sub-mounting member 231 and a second sub-mounting member 232 connected to each other, and the first sub-mounting member 231 and the second sub-mounting member 232 surround the first drive shaft 21. The first mounting member 23 is configured with the first sub-mounting member 231 and the second sub-mounting member 232. The first mounting member 23 has a split structure. On the one hand, the interior of the first mounting member 23 is open. Compared with a closed structure, it is convenient to process the guide groove 235 on the inner wall of the first mounting member 23, thereby simplifying the processing technology of the first mounting member 23. On the other hand, it is not necessary to provide a large opening at the end of the first mounting member 23 for inserting the first drive shaft 21 with the protrusion 211. The limiting part does not need to be assembled later. The limiting part can be integrally formed with the first sub-mounting member 231 and / or the second sub-mounting member 232, so that the connection between the limiting part and the first mounting member 23 is more reliable and the limiting part is not easy to shift, thereby controlling the width of the gap 17 within a preset range.

[0063] Please refer to Figures 1-3. The housing assembly 10 includes a housing 11. The housing 11 may include multiple sub-housings, which are connected to form the housing 11, facilitating the assembly of components within the housing 11. The housing 11 encloses a receiving cavity 14, and an adsorption port 15 is formed on the housing 11. The first drive shaft 21 can be directly mounted on the housing 11. For example, a through hole is provided on the housing 11, through which the first drive shaft 21 passes and is connected to the drive assembly 40 for transmission. In one embodiment, as shown in Figure 3, the housing assembly 10 also includes a first bracket 12, which is disposed on the housing 11 and housed within the receiving cavity 14. One end of the first drive shaft 21 passes through the first bracket 12. Since the first bracket 12 has a certain dimension in the extending direction of the first drive shaft 21, the first bracket 12 can provide better support for the first drive shaft 21, thereby reducing the size of the cantilever end of the first drive shaft 21 and improving the stability of the first roller brush 22 in the working state.

[0064] Referring to Figure 3, in one embodiment, the first roller brush 22 has a limiting groove 223, and one end of the first bracket 12 is accommodated within the limiting groove 223. By accommodating a portion of the first bracket 12 within the limiting groove 223 of the first roller brush 22, the first roller brush 22 and the first bracket 12 partially overlap in the extending direction of the first drive shaft 21. This fully utilizes the internal space of the accommodating cavity 14, which helps to reduce the volume of the roller brush device 100. When the first roller brush 22 moves relative to the first drive shaft 21, one end of the first bracket 12 slides within the limiting groove 223, allowing the sidewall of the limiting groove 223 to restrict the lateral displacement of the first roller brush 22, preventing the first roller brush 22 from tilting during movement and improving the stability of the first roller brush 22's movement.

[0065] The first drive shaft 21 can be directly connected to the drive assembly 40. Alternatively, as shown in Figures 3 and 5, in one embodiment, a connector 24 is provided at the end of the first drive shaft 21 connected to the first bracket 12, and the first drive shaft 21 is connected to the drive assembly 40 through the connector 24. The cross-section of the connector 24 in at least part of the first direction is larger than the cross-section of the end of the first drive shaft 21 connected to the first bracket 12 in the first direction, so that the connector 24 can restrict the displacement of the first drive shaft 21. The connector 24 is detachably connected to the first drive shaft 21. Exemplarily, the connector 24 and the first drive shaft 21 can be connected by snap-fit, adhesive, or thread. By providing a detachable connection between the connector 24 and the first drive shaft 21, during assembly, the first drive shaft 21 can be inserted into the first bracket 12 first, and then the connector 24 can be connected to the first drive shaft 21, thereby facilitating the assembly of the roller brush device 100.

[0066] Referring to Figures 1-3, in one embodiment, the second roller brush assembly 30 includes a second drive shaft 31. The second roller brush 32 is mounted on the housing assembly 10 via the second drive shaft 31. The second roller brush 32 is positioned relatively fixed to the housing assembly 10 in a first direction. The second drive shaft 31 is used to drive the second roller brush 32 to rotate. The second drive shaft 31 can be connected to the drive assembly 40 for transmission, thereby enabling the drive assembly 40 to drive the second roller brush 32 to rotate and clean the surface to be cleaned.

[0067] The second drive shaft 31 can be directly mounted on the housing 11. For example, the housing 11 has a through hole through which the second drive shaft 31 passes and is connected to the drive assembly 40. In one embodiment, as shown in FIG3, the housing assembly 10 further includes a second bracket 13, which is housed in the receiving cavity 14. One end of the second bracket 13 is assembled to the second end wall 114, and the other end of the second bracket 13 extends toward the first end wall 113. One end of the second drive shaft 31 passes through the second bracket 13. By setting the second bracket 13 to extend toward the first end wall 113, the second bracket 13 has a certain size in the extension direction of the second drive shaft 31. The second bracket 13 can provide better support for the second drive shaft 31, thereby reducing the size of the cantilever end of the second drive shaft 31 and improving the stability of the second roller brush 32 in the working state.

[0068] Referring to Figures 3 and 9, in one embodiment, the second roller brush assembly 30 includes a second mounting member 33, and a second roller brush 32 is sleeved outside the second mounting member 33. The second mounting member 33 is located at the end of the second roller brush 32 away from the second end wall 114. By sleeved outside the second mounting member 33, the second mounting member 33 and the second roller brush 32 are relatively independent before the second mounting member 33 is assembled into the second roller brush 32. This allows the materials of the second mounting member 33 and the second roller brush 32 to be different. For example, the second mounting member 33 can be made of metal or a plastic with high hardness. The second mounting member 33 has high strength, and being located at the end of the second roller brush 32 away from the second end wall 114, the second mounting member 33 can provide support for the free end of the second roller brush 32, making it less prone to deformation when the second roller brush 32 rotates and improving the stability of the second roller brush 32 in its working state.

[0069] As mentioned above, the first roller brush assembly 20 and the second roller brush assembly 30 are arranged in pairs. The first roller brush assembly 20 and the second roller brush assembly 30 can be one, two, three, four, or more, respectively. When there are multiple pairs of roller brush assemblies, multiple pairs of roller brush assemblies simultaneously contact the surface to be cleaned, which increases the contact area between the roller brush assemblies and the surface to be cleaned, thereby improving cleaning efficiency. In one embodiment, as shown in Figures 2 and 3, there is only one first roller brush 22 and one second roller brush 32, both driven by a drive assembly 40. The first drive shaft 21 and the second drive shaft 31 can be coaxially arranged in a first direction, in which case the first roller brush 22 and the second roller brush 32 can be approximately cylindrical; or, the first drive shaft 21 and the second drive shaft 31 have a certain angle between them, in which case the first roller brush 22 and the second roller brush 32 can be approximately conical. Setting the first roller brush 22 and the second roller brush 32 to share a single drive assembly 40 can reduce the number of drive assemblies 40, thereby reducing product cost.

[0070] Please refer to Figures 3, 5, and 9. In one embodiment, the first roller brush 22 includes a first brush body 221 and a first cleaning element 222. The first brush body 221 is sleeved outside the first drive shaft 21, and the first cleaning element 222 is spirally arranged on the outer wall of the first brush body 221 from one end to the other. The second roller brush 32 includes a second brush body 321 and a second cleaning element 322. The second brush body 321 is sleeved outside the second drive shaft 31, and the second cleaning element 322 is spirally arranged on the outer wall of the second brush body 321 from one end to the other. The spiral direction of the second cleaning element 322 is opposite to that of the first cleaning element 222. The cleaning element is used to contact the surface to be cleaned to sweep away dust, debris, hair, and other garbage. By setting the spiral directions of the two cleaning elements to be opposite, when the cleaning element contacts the garbage, the cleaning element can guide the garbage to move along the spiral direction, thereby causing the garbage to gather at the gap 17, making it convenient for the garbage to enter the dust box through the suction port 15. When the roller brush device 100 is placed on the ground and the gap 17 is at its minimum width, the orthographic projection of the first cleaning element 222 on the ground partially overlaps with the orthographic projection of the second cleaning element 322 on the ground to prevent missed cleaning.

[0071] Referring to Figures 5 and 9, in one embodiment, both the first cleaning member 222 and the second cleaning member 322 include at least one of a brush strip and brush bristles. That is, the brush body may be provided with either a brush strip or brush bristles, or both may be provided simultaneously. When both brush strips and brush bristles are provided simultaneously, they may be spaced apart.

[0072] The roller brush device 100 may have a first roller brush assembly 20 and a second roller brush assembly 30 respectively mounted on the first end wall 113 and the second end wall 114 of the housing assembly 10. In this case, the first roller brush assembly 20 and the second roller brush assembly 30 are arranged in a double cantilever configuration, and the ends of the first roller brush assembly 20 and the ends of the second roller brush assembly 30 are not in contact with each other.

[0073] Alternatively, as shown in Figure 10, the roller brush device 100 may have only one roller brush assembly 20 mounted on the first end wall 113 of the housing assembly 10, in which case the first roller brush assembly 20 is arranged in a single cantilever configuration. The roller brush device 100 may include the housing assembly 10 and the first roller brush assembly 20. The first roller brush assembly 20 may be one, two, three, four, or more. The housing assembly 10 provides space for mounting the first roller brush assembly 20. The first roller brush assembly 20 includes a first roller brush 22. The housing assembly 10 has a receiving cavity 14, in which the first roller brush 22 is received. The housing assembly 10 has a first end wall 113 and a second end wall 114 disposed opposite each other in a first direction. The first roller brush 22 is used to clean the surface to be cleaned. One end of the first roller brush 22 is mounted on the first end wall 113, and the other end may form a gap 17 with the second end wall 114 in the first direction. That is, the end of the first roller brush 22 does not contact the second end wall 114. At least one of the first roller brush 22 and the second end wall 114 can move along a first direction to adjust the width of the gap 17 between the first roller brush 22 and the second end wall 114 in the first direction. The adjustable width of the gap 17 serves two purposes: firstly, increasing the gap 17 reduces the constraint of the roller brush on the hair, making it easier to remove the hair and preventing it from getting tangled on the roller brush, allowing it to rotate normally and improving the cleaning effect; secondly, decreasing the gap 17 increases the contact area between the roller brush and the surface to be cleaned, making the gap smaller and reducing the probability of missed areas during cleaning, thus improving the cleaning effect. The adjustment method of the gap 17 and other structures of the roller brush device 100 can be found in the aforementioned description of simultaneously setting the first roller brush assembly 20 and the second roller brush assembly 30, and will not be repeated here.

[0074] This application provides a cleaning device. The cleaning device can be a robotic vacuum cleaner or a traditional vacuum cleaner. The cleaning device includes components such as the roller brush device 100, a housing, and a dustbin, as described above. The housing has a mounting cavity, the roller brush device 100 is mounted on the side of the housing facing the surface to be cleaned, the dustbin is disposed in the mounting cavity, and the dustbin is mounted on the housing assembly 10. The housing assembly 10 of the roller brush device 10 has a suction port 15, and the dustbin communicates with the suction port 15. During the movement of the cleaning device, debris is absorbed into the dustbin through the suction port 15 by negative pressure. Other structural details of the cleaning device are not described further.

[0075] In related technologies, many cleaning devices are equipped with roller brushes. During the cleaning process, hair often gets caught in the roller brush and is difficult to clean. Over time, the hard-to-clean hair will accumulate and affect the lifespan of the roller brush.

[0076] In view of the above, firstly, please refer to Figures 11-13. This application proposes a roller brush device 1A, including a housing assembly 10A, a roller brush assembly 20A, and a comb tooth section 30A.

[0077] The housing assembly 10A has a receiving cavity 11A, and the roller brush assembly 20A is located in the receiving cavity 11A. The roller brush assembly 20A is rotatably connected to the housing assembly 10A via a rotating shaft 21A. The comb teeth 30A are installed on the inner side wall of the receiving cavity 11A. The housing assembly 10A provides a base and installation space for the roller brush assembly 20A and the comb teeth 30A. The housing assembly 10A also has a cleaning port 13A. After the roller brush assembly 20A is installed in the receiving cavity 11A, at least a part of the roller brush assembly 20A is exposed in the receiving cavity 11A through the cleaning port 13A to facilitate the cleaning work of the roller brush assembly 20A.

[0078] The housing assembly 10A has an adsorption port 12A communicating with the accommodating cavity 11A. The roller brush assembly 20A has a bristle structure 22A arranged in a spiral around the circumference of the roller brush assembly 20A. The roller brush assembly 20A has a first gap 23A opposite to the position of the adsorption port 12A. It can be understood that when the roller brush device 1A picks up hair or garbage and other impurities during cleaning, the rotation of the spiral bristle structure 22A on the roller brush assembly 20A will generate an airflow toward the first gap 23A. This will cause most of the impurities to gather on the roller brush assembly 20A toward the position of the first gap 23A, so that most of the impurities can be sucked out of the accommodating cavity 11A through the adsorption port 12A opposite to the position of the first gap 23A.

[0079] The comb tooth section 30A includes a plurality of tooth structures 31A arranged axially at intervals along the rotation axis 21A. The tooth structures 31A and the bristle structure 22A can jointly assist the hair on the roller brush assembly 20A to converge towards the first gap 23A. The comb tooth section 30A includes a proximal end near the suction port 12A and a distal end away from the suction port 12A relative to the proximal end. At least a portion of the tooth structures 31A located at the proximal end is provided with hook structures 32A. Multiple tooth structures 31A can be provided on both the proximal end and the distal end. Preferably, the two tooth structures closest to the suction port 12A are... A hook structure 32A is provided on 31A. The hook structure 32A can hook off at least some of the hair on the roller brush assembly 20A. That is, the hook structure 32A can prevent at least some of the hair on the roller brush assembly 20A from rotating with the roller brush assembly 20A. The hook structure 32A is located close to the suction port 12A, that is, close to the first gap 23A. Therefore, the hair hooked off by the hook structure 32A can be smoothly sucked out from the first gap 23A and the suction port 12A, thereby improving the problem of hair being difficult to clean when tangled on the roller brush. The hook structure 32A can be toothed or barbed to hook off the hair on the roller brush assembly 20A, prevent the hair from rotating with the roller brush assembly 20A, and make it easier for the hair to be sucked away from the suction port 12A.

[0080] Specifically, the hook structure 32A is only provided on the tooth structure 31A near the suction port 12A, which can prevent the hair from getting tangled more and more tightly with the roller brush assembly 20A due to the excessive number of hook structures 32A on the tooth structure 31A. In other words, the comb tooth portion 30A in this embodiment can reduce the probability of hair getting stuck in the roller brush assembly 20A. For example, hook structures 32A are provided on the two tooth structures 31A closest to the adsorption port 12A, while hook structures 32A are not provided on the other tooth structures 31A. As a result, during the rotation of the roller brush assembly 20A, the tooth structures 31A without hook structures 32A can work together with the bristle structure 22A to help the hair on the roller brush assembly 20A converge towards the first gap 23A. The two tooth structures 31A with hook structures 32A can hook down the hair that converges towards the first gap 23A on the roller brush assembly 20A, so that the hair can detach from the roller brush assembly 20A and be more easily discharged from the first gap 23A to the adsorption port 12A, thereby achieving the effect of preventing tangling.

[0081] In some embodiments, the width of the first gap 23A is adjustable. Adjusting the width of the first gap 23A, in conjunction with the hook structure 32A, allows at least some hair on the roller brush assembly 20A to be hooked off. On one hand, increasing the first gap 23A reduces the constraint of the roller brush on the hair, making it easier to remove the hair and preventing it from getting tangled on the roller brush. On the other hand, the hair hooked off by the hook structure 32A can be smoothly sucked out from the first gap 23A and the suction port 12A, further preventing hair from getting tangled on the roller brush, allowing the roller brush to rotate normally, thereby further improving the cleaning effect.

[0082] In some embodiments, a portion of the tooth structure 31A in the comb tooth portion 30A is provided with a hook structure 32A, and the tooth structure 31A provided with the hook structure 32A is a hook tooth. Another portion of the tooth structure 31A in the comb tooth portion 30A is provided with a guide sidewall (equivalent to the first sidewall 311A ​​in FIG. 16) for contacting the bristle structure 22A, and the tooth structure 31A provided with the guide sidewall is a guide tooth. At least some of the guide teeth are at a distance from the suction port 12A that is greater than the distance from the hook tooth to the suction port 12A.

[0083] Specifically, at least a portion of the tooth structure 31A located at the proximal end is provided with a hook structure 32A, that is, the tooth structure 31A near the suction port 12A is provided with a hook structure 32A. The tooth structure 31A near the suction port 12A is a hook tooth, which can hook down the hairs that are converging on the roller brush assembly 20A towards the first gap 23A, so that the hairs are detached from the roller brush assembly 20A and are more easily discharged from the first gap 23A towards the suction port 12A. The tooth structure located at the distal end is not provided with a hook structure 32A, and the tooth structure 31A without a hook structure 32A is provided with a guide sidewall, which, together with the bristle structure 22A, guides the hairs on the roller brush assembly 20A so that the hairs on the roller brush assembly 20A converge towards the first gap 23A.

[0084] Please refer to Figures 13-14. In some embodiments of this application, the comb tooth portion 30A further includes a mounting plate 35A and a snap-fit ​​member (not shown in the figures). The snap-fit ​​member and the tooth structure 31A are disposed on opposite sides of the mounting plate 35A. The mounting plate 35A is snapped into the housing assembly 10A through the snap-fit ​​member to facilitate the installation and replacement of the comb tooth portion 30A.

[0085] Specifically, the mounting plate 35A extends axially along the rotating shaft 21A, so that when the toothed structures 31A are mounted on the mounting plate 35A, they can be arranged at intervals along the axial direction of the rotating shaft 21A. Furthermore, the length of the mounting plate 35A along the axial direction of the rotating shaft 21A is greater than or equal to the length of the roller brush assembly 20A along the axial direction of the rotating shaft 21A, ensuring that all the bristle structures 22A on the roller brush assembly 20A can contact the toothed structures 31A on the mounting plate 35A. For example, both the mounting plate 35A and the snap-fit ​​component can be made of hard plastic material to improve the strength of the mounting plate 35A. The toothed structures 31A can be made of nylon material, because nylon is not only wear-resistant and heat-resistant, but also has a smooth surface that does not easily damage the bristle structures 22A.

[0086] In some embodiments, the extending direction of the tooth structure 31A is the same as the spiral direction of the bristle structure 22A, thereby ensuring that the hairs on the roller brush assembly 20A experience uniform force between the tooth structure 31A and the bristle structure 22A. This facilitates the combined flow of the tooth structure 31A and the bristle structure 22A to the hairs on the roller brush assembly 20A. Simultaneously, the extending directions of the multiple tooth structures 31A can also be parallel to each other, further ensuring uniform force on the hairs on the roller brush assembly 20A and facilitating the flow of the hairs on the roller brush assembly 20A.

[0087] Please refer to Figures 12-13. In some embodiments of this application, the hook structure 32A is located on the side of the tooth structure 31A facing the adsorption port 12A. That is, the tooth structure 31A has a first sidewall 311A, the hook structure 32A is disposed on the first sidewall 311A, and the adsorption port 12A is disposed close to the first sidewall 311A.

[0088] In some embodiments, on the rotation path of the roller brush assembly 20A, the suction port 12A is arranged upstream of the rotation path of the roller brush assembly 20A, and the tooth structure 31A is arranged downstream of the rotation path of the roller brush assembly 20A. That is, in Figure 12, the roller brush assembly 20A rotates counterclockwise. At this time, the bristle structure 22A on the roller brush assembly 20A will first pass the position of the suction port 12A, and then pass the position of the tooth structure 31A. During the process of the bristle structure 22A passing the position of the tooth structure 31A, the bristle structure 22A first passes the hook structure 32A on the tooth structure 31A. This allows the hair on the roller brush assembly 20A to be hooked by the hook structure, so that the hooked hair is located near the suction port 12A and can be more easily sucked out from the suction port 12A without getting tangled on the roller brush assembly 20A.

[0089] Further, referring to Figure 13, in some embodiments of this application, the tooth structure 31A also has a second sidewall 312A disposed opposite to the inner sidewall of the accommodating cavity 11A. The second sidewall 312A extends obliquely away from the first sidewall 311A ​​and close to the inner sidewall of the accommodating cavity 11A. That is, the second sidewall 312A on the tooth structure 31A is disposed toward the roller brush assembly 20A. The second sidewall 312A may be a sloping surface or a concave curved surface, thereby forming a tooth structure 31A shape with one end high and the other end low, which serves as a transition for the tooth structure 31A, reducing the resistance when the bristle structure 22A contacts the tooth structure 31A, thereby reducing the adverse effect of the comb tooth portion 30A on the rotation of the roller brush assembly 20A.

[0090] Referring to Figure 15, in some embodiments of this application, the roller brush assembly 20A includes a first roller brush 24A and a second roller brush 25A arranged axially at intervals along the pivot 21A, with a first gap 23A located between the first roller brush 24A and the second roller brush 25A. The roller brush assembly 20A can be a single section, meaning the first roller brush 24A and the second roller brush 25A are rotatably connected to the housing assembly 10A via the same pivot 21A, and a portion of the pivot 21A may be exposed at the first gap 23A. Alternatively, the roller brush assembly 20A can be a two-section section, meaning the first roller brush 24A and the second roller brush 25A are rotatably connected to the housing assembly 10A via different pivots 21A, and a portion of the pivot 21A may not be exposed at the first gap 23A.

[0091] As shown in Figure 15, the bristle structure 22A includes a first bristle 221A and a second bristle 222A. The first bristle 221A is disposed on the periphery of the first roller brush 24A, and the second bristle 222A is disposed on the periphery of the second roller brush 25A. Along the axial direction of the rotating shaft 21A, the spiral directions of the first bristle 221A and the second bristle 222A are opposite. The spirals are either left-handed or right-handed. Viewed from the center of the spiral along the axial direction of the rotating shaft 21A, the spirals are counterclockwise from near to far. The spiral direction of one of the first bristles 221A and the second bristles 222A is left-handed, while the spiral direction of the other is right-handed. This allows the hair to gather from the outside of the first roller brush 24A and the second roller brush 25A towards the first gap 23A in the middle when it is rolled into the roller brush assembly 20A. This makes it easier for the hair to be sucked away from the first gap 23A, thereby preventing the hair from accumulating on the roller brush device 1A for a long time and affecting the service life of the roller brush assembly 20A.

[0092] Specifically, the first bristles 221A are arranged in multiple rows, with adjacent rows of first bristles 221A arranged obliquely parallel. Similarly, the second bristles 222A are arranged in multiple rows, with adjacent rows of second bristles 222A arranged obliquely parallel. It can be understood that the bristles themselves are arranged in a spiral pattern on the roller brush assembly 20A, thus ensuring that adjacent rows of bristles are arranged obliquely parallel. This guarantees a uniform distribution of contact time between the bristles and the ground, shortens the contact time interval between the bristles and the ground, and thereby improves the cleaning efficiency of the roller brush assembly 20A.

[0093] In some embodiments, the orthographic projection of the first bristle 221A on the rotating shaft 21A partially overlaps with the orthographic projection of the second bristle 222A on the rotating shaft 21A. That is, although there is a gap between the first roller brush 24A and the second roller brush 25A, both the first bristle 221A and the second bristle 222A will extend to the middle gap position. When the roller brush device 1A is cleaning, the first bristle 221A and the second bristle 222A can not only sweep the position of the roller brush assembly 20A, but also sweep the position of the first gap 23A between the two roller brush assemblies 20A, thereby preventing the roller brush device 1A from missing the middle during cleaning. Among them, the first bristles 221A on the first roller brush 24A and the second bristles 222A on the second roller brush 25A are arranged asymmetrically with respect to the first line of symmetry. At the same time, the first roller brush 24A and the second roller brush 25A rotate in the same direction and at the same speed, thereby avoiding interference between the first bristles 221A and the second bristles 222A when they rotate due to partial overlap of orthographic projection.

[0094] As shown in Figure 15, in some embodiments, a first brush blade 26A is further provided on the periphery of the first roller brush 24A. The first brush blade 26A is arranged in a spiral around the periphery of the first roller brush 24A. The first brush blade 26A and the first bristles 221A are arranged side by side and spaced apart around the periphery of the first roller brush 24A, and the first brush blade 26A and the first bristles 221A are alternately spaced apart. A second brush blade 27A is further provided on the periphery of the second roller brush 25A. The second brush blade 27A is arranged in a spiral around the periphery of the second roller brush 25A. The second brush blade 27A and the second bristles 222A are arranged side by side and spaced apart around the periphery of the second roller brush 25A, and the second brush blade 27A and the second bristles 222A are alternately spaced apart. Understandably, the first brush blade 26A and the second brush blade 27A, through their planar structure, make it easier to sweep up debris on the ground. The first bristle 221A and the second bristle 222A, through their multiple clumps of bristles, further sweep up hair and other debris on the ground. When the roller brush device 1A sweeps the ground, the contact time between the bristles and brush blades and the ground is greatly shortened, and the roller brush device 1A sweeps up debris and hair in various locations on the ground more thoroughly, so that the first roller brush 24A and the second roller brush 25A can better complete the sweeping work, further improving the sweeping efficiency of the roller brush device 1A.

[0095] Please refer to Figures 14-5. In some embodiments of this application, the first roller brush 24A and the second roller brush 25A have a first symmetry line M, which is perpendicular to the axis of the rotating shaft 21A. The comb tooth section 30A includes a first tooth group 33A and a second tooth group 34A. Both the first tooth group 33A and the second tooth group 34A include multiple tooth structures 31A. The first tooth group 33A and the second tooth group 34A are symmetrically distributed about the first symmetry line M.

[0096] Specifically, the first roller brush 24A is positioned opposite to the first tooth group 33A, and the second roller brush 25A is positioned opposite to the second tooth group 34A. This allows the first bristle 221A and the first tooth group 33A, and the second bristle 222A and the second tooth group 34A, to synchronously guide the hair movement on the two different roller brush assemblies 20A. This makes the hair at both ends of the roller brush assembly 20A converge more comprehensively at the first gap 23A. The symmetrical distribution of the first tooth group 33A and the second tooth group 34A makes the hair evenly stressed on the roller brush assembly 20A, which is beneficial for guiding the hair on the roller brush assembly 20A.

[0097] Furthermore, the extension direction of the tooth structure 31A in the first tooth group 33A is the same as the helical direction of the first bristle 221A, and the extension direction of the tooth structure 32 in the second tooth group 34A is the same as the helical direction of the second bristle 222A. This ensures that the hairs on the roller brush assembly 20A are subjected to uniform force by the first bristle 221A and the tooth structure 31A in the first tooth group 33A, which is beneficial for the first bristle 221A and the tooth structure 31A in the first tooth group 33A to jointly guide the hairs on the roller brush assembly 20A. Similarly, the second bristle 222A and the tooth structure 31A in the second tooth group 34A can also jointly guide the hairs on the roller brush assembly 20A.

[0098] Further, please refer to Figures 14-16. The first tooth group 33A includes a first tooth structure 331A near the first line of symmetry M, and the second tooth group 34A includes a second tooth structure 332A near the first line of symmetry M. Both the first tooth structure 331A and the second tooth structure 332A are provided with hook structures 32A, and the first tooth structure 331A and the second tooth structure 332A are symmetrically distributed about the first line of symmetry M.

[0099] The first tooth structure 331A and the second tooth structure 332A can each be provided with one or more. For example, the first tooth group 33A includes a first tooth structure 331A close to the first line of symmetry M, and the second tooth group 34A includes a second tooth structure 332A close to the first line of symmetry M. The first tooth structure 331A and the second tooth structure 332A are close to the first gap 23A, so that after the hook structure 32A on the first tooth structure 331A and the second tooth structure 332A hooks down the hair, it can be sucked out from the suction port 12A more smoothly.

[0100] Furthermore, referring to Figure 14, the extension directions of the multiple tooth structures 31A in the first tooth group 33A are parallel to each other, and the extension directions of the multiple tooth structures 31A in the second tooth group 34A are parallel to each other, thereby making the hair evenly stressed on the roller brush assembly 20A, which is beneficial for guiding the hair on the roller brush assembly 20A.

[0101] Further, referring to Figure 16, the tooth structure 31A includes a first end 313A and a second end 314A disposed opposite to each other. The first sidewall 311A ​​is located at the first end 313A. On the rotation path of the roller brush assembly 20A, as the bristle structure 22A passes through the tooth structure 31A, the bristle structure 22A will first pass the position of the first end 313A on the tooth structure 31A, and then pass the position of the second end 314A on the tooth structure 31A. The distance between the first end 313A and the first line of symmetry M along the axial direction of the rotation axis 21A is S1, and the distance between the second end 314A and the first line of symmetry M along the axial direction of the rotation axis 21A is S2, where S1 < S2. That is, along the axial direction of the rotation axis 21A, the vertical distance from the first end 313A to the first line of symmetry M is less than the vertical distance from the second end 314A to the first line of symmetry M.

[0102] It is understandable that the tooth structure 31A in the first tooth group 33A and the tooth structure 31A in the second tooth group 34A have opposite inclination directions relative to the rotating shaft 21A. Taking the first tooth structure 331A and the second tooth structure 332A as an example, the first tooth structure 331A and the second tooth structure 332A are arranged in a figure-eight shape, so that the comb tooth part 30A and the bristle structure 22A can work together to help the hair rolled on the roller brush assembly 20A to gather towards the first gap 23A. At the same time, the first tooth structure 331A and the second tooth structure 332A near the first symmetry line M have hook structures 32A, which can block the hair wrapped on the roller brush assembly 20A, so that the hair can be sucked out of the receiving cavity 11A through the suction port 12A opposite to the position of the first gap 23A.

[0103] Specifically, taking the first roller brush 24A as an example, the first bristle 221A has a fixed end and a free end that are arranged opposite to each other. The fixed end is connected to the first roller brush 24A, and the free end is inclined towards the direction close to the second roller brush 25A. The tooth structure 31A in the first tooth group 33A is inclined away from the second roller brush 25A. That is to say, the inclination direction of the first bristle 221A and the tooth structure 31A in the first tooth group 33A is opposite. As a result, friction is generated between the first bristle 221A and the first tooth group 33A. This allows the roller brush device 1A to suck up hair during the cleaning process. Under the action of the first bristle 221A and the first tooth group 33A, the hair gathers towards the first gap 23A. After gathering, the hair is blocked by the hook structure 32A on the first tooth structure 331A near the suction port 12A, reducing the hair from getting tangled on the first roller brush 24A, and thus making it easier to be sucked out from the suction port 12A. The second bristles 222A and the second tooth group 34A on the second roller brush 25A are symmetrically arranged with the first roller brush 24A about the first symmetry line M. The working principle of the second roller brush 25A is the same as that of the first roller brush 24A, which will not be elaborated here.

[0104] Secondly, as shown in FIG17, this application embodiment also provides a cleaning device 2A, including a dust suction component 40A and a roller brush device 1A as described in any of the above embodiments. The dust suction component 40A has a dust suction chamber, which is connected to the suction port 12A.

[0105] Specifically, the vacuuming assembly 40A includes a fan for suction, with the fan's inlet connected to the suction port 12A and its outlet connected to the suction chamber. When the roller brush device 1A sucks in hair during cleaning, the hair gathers at the first gap 23A. The fan uses the suction force of the inlet to collect the hair gathered at the first gap 23A into the suction chamber for subsequent cleaning. The cleaning device 2A also includes a drive assembly 50A, which is connected to the roller brush device 1A to drive the roller brush assembly 20A to rotate. The drive assembly 50A may include a motor for outputting power and a gearbox for speed regulation.

[0106] In related technologies, the roller brushes on many cleaning devices are replaceable. The roller brush is usually assembled with the bracket. When replacing the roller brush, the bracket and the roller brush need to be disassembled together. The disassembly process is complicated, and the roller brush and the bracket need to be replaced together, which will increase the cost of replacement consumables.

[0107] In response to the above situation, in the first aspect, please refer to Figures 18-20. This application proposes a roller brush device 1B. The roller brush device 1B can generally be installed as an integral structure in the cleaning equipment 2B. The roller brush device 1B includes a housing assembly 10B, a mounting bracket 20B, and a roller brush assembly 30B. The roller brush assembly 30B is installed in the housing assembly 10B through the mounting bracket 20B. The housing assembly 10B has a receiving cavity 11B and a cleaning port 12B communicating with the receiving cavity 11B. After the roller brush assembly 30B is installed in the receiving cavity 11B, the receiving cavity 11B is a semi-enclosed cavity. The receiving cavity 11B communicates with the outside through the cleaning port 12B. A part of the roller brush assembly 30B extends out of the receiving cavity 11B through the cleaning port 12B. The roller brush assembly 30B exposed outside the receiving cavity 11B is used for cleaning the floor.

[0108] As shown in Figures 19-20, the mounting bracket 20B includes a bracket body 24B and a rotating part 23B. The rotating part 23B is located on the side of the bracket body 24B and is rotatably connected to the housing assembly 10B around a first axis L1, thereby driving the bracket body 24B to rotate around the first axis L1. The roller brush assembly 30B is detachably connected to the bracket body 24B and can rotate relative to the housing assembly 10B around a second axis L2. The first axis L1 and the second axis L2 are parallel. When the bracket body 24B rotates relative to the housing assembly 10B around the first axis L1, the bracket body 24B can drive the roller brush assembly 30B to enter and exit the receiving cavity 11B through the cleaning port 12B, making the disassembly and replacement of the roller brush assembly 30B easier.

[0109] Specifically, the housing assembly 10B provides a base and installation space for the mounting bracket 20B and the roller brush assembly 30B, as shown in Figure 18. The rotating part 23B is a rotating shaft, which is located on a side of the bracket body 24B. For example, the orthographic projection of the bracket body 24B along the first axis L1 coincides with the edge of the orthographic projection of the rotating part along the first axis L1. When the rotating shaft rotates, it can drive the bracket body 24B to rotate as a whole. The bracket body 24B is rotatably connected to the housing assembly 10B around the first axis L1 through the rotating shaft, and the first axis L1 is the axis of the rotating shaft. For example, the bracket body 24B can be disc-shaped, the rotating part 23B is located on the circumference of the disc of the bracket body 24B, and the roller brush assembly 30B is disposed on the disc of the bracket body 24B. The second axis L2 of the roller brush assembly 30B is the axis of the disc, so the first axis L1 and the second axis L2 do not coincide.

[0110] It should be noted that in this embodiment, the roller brush assembly 30B is installed by setting the bracket body 24B. The user can manually adjust the movement of the bracket body 24B relative to the housing assembly 10B, so that the roller brush assembly 30B can move synchronously with the bracket body 24B and leave the receiving cavity 11B. This allows the mounting bracket 20B to be reused repeatedly. The roller brush assembly 30B can be disassembled and replaced individually without disassembling the mounting bracket 20B, which simplifies the installation and replacement steps of the roller brush assembly 30B and reduces the cost of replacement consumables in the roller brush device 1B.

[0111] It should also be noted that the surface of the roller brush assembly 30B may be provided with cleaning elements, such as bristles and / or brush strips, or the roller brush assembly 30B may be a roller cloth. During the rotation of the roller brush assembly 30B, the cleaning elements of the roller brush assembly 30B can come into contact with dust and other impurities on the surface to be cleaned, and remove the impurities from the surface to be cleaned during the rotation of the roller brush assembly 30B. In order to prevent the roller brush device 1B from deforming during rotation, both the transmission part 22B used to drive the roller brush assembly 30B to rotate and the mounting bracket 20B used to mount the roller brush device 1B can be made of metal. Among them, the rotation angle α driven by the rotating part 23B to rotate the bracket body 24B around the first axis L1 is α, where α satisfies 0≤α≤90°.

[0112] In some embodiments, the gap width between the roller brushes is adjustable. Setting the gap width to be adjustable, and mounting the roller brush assembly 30B via the bracket body 24B, serves two purposes: firstly, increasing the gap reduces the constraint of the roller brush on the hair, making it easier to remove hair and preventing hair from getting tangled on the roller brush; secondly, by mounting the roller brush assembly 30B via the bracket body 24B, the user can manually adjust the movement of the bracket body 24B relative to the housing assembly 10B, allowing the roller brush assembly 30B to move synchronously with the bracket body 24B and leave the receiving cavity 11B. This allows for the individual removal of the roller brush assembly 30B without disassembling the mounting bracket 20B, facilitating cleaning of the roller brush assembly 30B and further preventing hair from getting tangled on the roller brush.

[0113] Please refer to Figure 18. In some embodiments of this application, the housing assembly 10B is provided with an output part 13B for transmission connection with an external motor; the bracket body 24B is provided with a transmission part 22B for transmission connection with the output part 13B. The transmission part 22B is rotatably connected to the bracket body 24B through a bearing. The transmission part 22B is connected to the roller brush assembly 30B and can drive the roller brush assembly 30B to rotate around the second axis L2.

[0114] Specifically, the transmission unit 22B is mounted on the bracket body 24B and is rotatably connected to the bracket body 24B via bearings. An external motor can provide rotational torque to drive the output unit 13B to rotate the transmission unit 22B. When the roller brush assembly 30B is connected to the transmission unit 22B, the transmission unit 22B can also drive the roller brush assembly 30B to rotate synchronously. That is, when the transmission unit 22B rotates relative to the mounting bracket 20B around the second axis L2, the transmission unit 22B can drive the roller brush assembly 30B to rotate relative to the mounting bracket 20B around the second axis L2. The bracket body 24B can be disc-shaped, with the rotating part 23B located on the periphery of the disc, and the transmission unit 22B located at the center of the disc.

[0115] Please refer to Figure 18. In some embodiments of this application, the bracket body 24B is slidably connected to the rotating part 23B. The bracket body 24B can slide relative to the rotating part 23B along the extension direction of the first axis L1 so that the transmission part 22B can contact and separate from the output part 13B.

[0116] Understandably, when the roller brush device 1B is working, the output part 13B and the transmission part 22B are connected by transmission. The output part 13B can drive the transmission part 22B to rotate. When the roller brush assembly 30B is disassembled, the support body 24B needs to be rotated around the first axis L1 so that the support body 24B and the roller brush assembly 30B rotate away from the receiving cavity 11B. In order to reduce the interference of the output part 13B on the movement of the transmission part 22B, the support body 24B can slide along the extension direction of the first axis L1 so that the transmission part 22B and the output part 13B are separated first, and then the support body 24B is rotated, thereby avoiding the output part 13B interfering with the rotation process of the transmission part 22B. After the roller brush assembly 30B is installed on the transmission part 22B, the bracket body 24B can be rotated into the receiving cavity 11B first, and then the bracket body 24B can be slid along the extension direction of the first axis L1 so that the transmission part 22B and the output part 13B can make transmission contact, and the output part 13B can drive the transmission part 22B to rotate.

[0117] Please refer to Figure 21. In some embodiments of this application, the roller brush device 1B further includes a limiting member 41B, which is detachably connected to the housing assembly 10B. Thus, the limiting member 41B can move relative to the housing assembly 10B, allowing it to contact the side of the mounting bracket 20B facing the roller brush assembly 30B. This restricts the sliding of the bracket body 24B relative to the rotating part 23B. That is, when the limiting member 41B is connected to the housing assembly 10B, the limiting member 41B is located on the side of the mounting bracket 20B facing the roller brush assembly 30B. The housing assembly 10B and the limiting member 41B are clamped on opposite sides of the mounting bracket 20B, thereby preventing the bracket body 24B from sliding relative to the rotation axis 21B along the extension direction of the first axis L1, thus preventing the roller brush assembly 30B from jumping during operation.

[0118] Specifically, the limiting member 41B can be detachably connected to the housing assembly 10B by means of snap-fit, screw connection, etc. The limiting member 41B can be detachably connected to the housing assembly 10B as a separate part, or the limiting member 41B can also be installed on the cover outside the roller brush device 1B, and the limiting member 41B and the housing assembly 10B can be detachably connected by the cover and the housing assembly 10B.

[0119] Furthermore, the roller brush device 1B also includes a cover plate 40B that is detachably connected to the housing assembly 10B. As shown in Figures 18 and 21, the housing assembly 10B is provided with a mounting groove 14B, and the cover plate 40B is provided with a buckle 43B. When the cover plate 40B is installed on the periphery of the cleaning port 12B, the buckle 43B is engaged in the mounting groove 14B, so that the cover is fixed on the housing assembly 10B.

[0120] It is easy to understand that when the mounting bracket 20B is installed on the housing assembly 10B, both the mounting bracket 20B and the roller brush assembly 30B will be exposed through the cleaning port 12B into the receiving cavity 11B and communicate with the outside. As shown in Figures 21-22, the cover plate 40B has a first opening 42B. When the cover plate 40B is closed over the cleaning port 12B, the first opening 42B corresponds to the cleaning port 12B, and the orthographic projection area of ​​the cleaning port 12B is larger than the orthographic projection area of ​​the first opening 42B. Therefore, after the cover plate 40B is closed, the mounting bracket 20B can be covered by the cover plate 40B, leaving only the roller brush assembly 30B exposed through the cleaning port 12B and the first opening 42B into the receiving cavity 11B, thereby preventing the mounting bracket 20B from accidentally touching and causing the roller brush assembly 30B to loosen.

[0121] In some embodiments, as shown in Figures 18 and 21, a limiting member 41B is provided on the cover plate 40B. It is easy to understand that the cover plate 40B will only close after the roller brush assembly 30B is installed in the receiving cavity 11B. When the cover plate 40B closes on the cleaning port 12B, the limiting member 41B is located on the side of the bracket body 24B away from the output part 13B. At this time, the limiting member 41B is in contact with the mounting bracket 20B. That is, the housing assembly 10B and the limiting member 41B are clamped on opposite sides of the bracket body 24B, thereby preventing the bracket body 24B from sliding relative to the rotation axis 21B along the extension direction of the first axis L1, thereby preventing the roller brush assembly 30B from jumping during operation.

[0122] In other embodiments, the cover plate 40B can also be rotatably connected to the housing assembly 10B via a pivot. The cover plate 40B can rotate toward the housing assembly 10B so that the cover plate 40B covers the cleaning port 12B, the mounting bracket 20B is blocked by the cover plate 40B, the roller brush assembly 30B is exposed through the cleaning port 12B and the first opening 42B to the receiving cavity 11B, and the limiting member 41B prevents the bracket body 24B from sliding. The cover plate 40B can also rotate away from the housing assembly 10B so that the cover plate 40B is away from the cleaning port 12B, the mounting bracket 20B is exposed from the cleaning port 12B, and the bracket body 24B can slide relative to the housing assembly 10B.

[0123] Please refer to Figures 18-19. In some embodiments of this application, the bracket body 24B is provided with a snap-fit ​​portion 25B, and the housing assembly 10B is provided with a slot 15B. The movable trajectory of the bracket body 24B in the extension direction of the first axis L1 has a first preset position and a second preset position.

[0124] As shown in Figure 18, when the support body 24B is in the first preset position, both the support body 24B and the roller brush assembly 30B are located in the receiving cavity 11B. The transmission part 22B is connected to the output part 13B, and the output part 13B can drive the transmission part 22B to rotate. At this time, the locking part 25B engages with the locking groove 15B to lock the support body 24B and the housing assembly 10B. The transmission part 22B drives the roller brush assembly 30B to rotate relative to the housing assembly 10B. The locking of the support body 24B and the housing assembly 10B can make the roller brush assembly 30B and the housing assembly 10B relatively stable. When the roller brush assembly 30B rotates, the shaking amplitude between the roller brush assembly 30B and the housing assembly 10B is reduced, the risk of damage to the roller brush assembly 30B is reduced, and the noise generated by the roller brush assembly 30B is also reduced.

[0125] As shown in Figure 19, when the bracket body 24B is in the second preset position, the transmission part 22B and the output part 13B are separated, reducing the rotational interference of the output part 13B on the transmission part 22B. At the same time, the locking part 25B is separated from the slot 15B, and the bracket body 24B can rotate around the first axis L1, so that the bracket body 24B and the roller brush assembly 30B leave the receiving cavity 11B through the cleaning port 12B.

[0126] Specifically, when the support body 24B moves from the first preset position to the second preset position, the support body 24B can slide away from the output part 13B along the extension direction of the first axis L1 until the support body 24B slides to the point where the transmission part 22B separates from the output part 13B. Then the support body 24B can rotate around the first axis L1, so that the support body 24B and the roller brush assembly 30B leave the receiving cavity 11B through the cleaning port 12B.

[0127] For example, the output section 13B includes an output gear, and the transmission section 22B is provided with a mating gear on the side facing the output section 13B. When the bracket body 24B slides to the point where the transmission section 22B is connected to the output section 13B, the mating gear meshes with the output gear, thereby enabling the output section 13B to drive the mating gear to rotate around the second axis L2 through the rotation of the output gear.

[0128] Furthermore, in some embodiments of this application, the mounting bracket 20B further includes a first elastic element (not shown in the figure). The first elastic element is connected to the bracket body 24B and the housing assembly 10B. When a force is applied to the bracket body 24B, causing the bracket body 24B to be in a second preset position, the bracket body 24B exerts a force on the first elastic element, causing the first elastic element to be in an elastic deformation state (tension deformation or contraction deformation). If the external force on the bracket body 24B disappears, the force exerted by the bracket body 24B on the first elastic element disappears, and the elastic force of the first elastic element causes the bracket body 24B to slide back from the second preset position to the first preset position. The first elastic element can be a spring, which is disposed between the bracket body 24B and the housing assembly 10B.

[0129] In some embodiments of this application, the mounting bracket 20B further includes a second elastic element (not shown in the figure) sleeved on the rotating part 23B. The second elastic element is connected to the bracket body 24B and the housing assembly 10B. When a force is applied to the bracket body 24B, causing the bracket body 24B to be outside the receiving cavity 11B, the bracket body 24B exerts a force on the second elastic element, causing the second elastic element to be in an elastic deformation state. If the external force on the bracket body 24B disappears, the force exerted by the bracket body 24B on the second elastic element disappears, and the elastic force of the second elastic element causes the bracket body 24B to rotate and return from outside the receiving cavity 11B to the receiving cavity 11B. The second elastic element can be a torsion spring, sleeved on the rotating shaft 21B, with one end of the torsion spring connected to the bracket body 24B and the other end connected to the housing assembly 10B.

[0130] Please refer to Figures 22-23. In some embodiments of this application, two mounting brackets 20B are provided, positioned on opposite sides of the roller brush assembly 30B. The roller brush assembly 30B includes a first roller brush 33B and a second roller brush 34B, which are spaced apart along the extension direction of the second axis L2. The axis of the first roller brush 33B coincides with the axis of the second roller brush 34B, and the direction of the axis of the first roller brush 33B / the direction of the axis of the second roller brush 34B is the extension direction of the second axis L2. One end of the first roller brush 33B is mounted on one mounting bracket 20B, and the other end of the first roller brush 33B is a free end. One end of the second roller brush 34B is mounted on the other mounting bracket 20B, and the other end of the second roller brush 34B is a free end.

[0131] It is easy to understand that there is a first gap between the first roller brush 33B and the second roller brush 34B, as shown in Figure 23. The two support bodies 24B are the first support body 271B and the second support body 272B, respectively. The first roller brush 33B is installed on the first support body 271B, and the second roller brush 34B is installed on the second support body 272B. The housing assembly 10B may also be provided with a first output part and a second output part. The first output part is used to dock with the first transmission part on the first support body 271B, and the second output part is used to dock with the second transmission part on the second support body 272B, so as to drive the transmission parts 22B on the two support bodies 24B to rotate respectively.

[0132] Specifically, as shown in Figure 23, taking the disassembly of the first roller brush 33B as an example, the first support body 271B is first slid along the extension direction of the first axis L1. That is, the first roller brush 33B moves towards the second roller brush 34B. The distance of the first gap along the extension direction of the first axis L1 is greater than the sliding distance of the first roller brush 33B along the extension direction of the first axis L1, so that the first gap can provide movement space for the first roller brush 33B and prevent the second roller brush 34B from interfering with the disassembly process of the first roller brush 33B. After the first support body 271B slides to the preset position, the first transmission part separates from the first output part, and the first support body 271B can rotate relative to the housing assembly 10B around the first axis L1, so that the first support body 271B and the first roller brush 33B can rotate away from the receiving cavity 11B through the cleaning port 12B. At this time, the user can remove the first roller brush 33B from the first transmission part, thereby completing the disassembly of the first roller brush 33B. The disassembly method of the second roller brush 34B is the same as that of the first roller brush 33B, and will not be described in detail here.

[0133] It should be noted that the roller brush assembly 30B includes two independently detachable split roller brushes, which shortens the overall length of a single roller brush, making it easier to clean. Both the first roller brush 33B and the second roller brush 34B can be provided with spiral bristle structures on their periphery. When the roller brush assembly 30B sweeps, it picks up hair, causing most of the hair to gather from the outside of the roller brush assembly 30B towards the gap between the first roller brush 33B and the second roller brush 34B. This improves the problem of hair being difficult to clean from various locations on the roller brush assembly 30B, making hair removal on the roller brush assembly 30B more convenient.

[0134] In some embodiments, the transmission part 22B and the roller brush assembly 30B can be detachably connected by snap-fit ​​and / or magnetic adsorption. Optionally, the transmission part 22B and the roller brush assembly 30B can be fixed separately by magnetic adsorption, with one of an iron sheet and a magnet provided on the end of the transmission part 22B, and the other of an iron sheet and a magnet provided on the roller brush assembly 30B, and the iron sheet and the magnet are magnetically adsorbed together.

[0135] Optionally, the transmission part 22B and the roller brush assembly 30B can be fixed separately by snap-fit. Specifically, as shown in Figures 23-24, the roller brush assembly 30B has an insertion groove 31B on the side facing the transmission part 22B, and an insertion part 26B is provided at the end of the transmission part 22B away from the rotating part 23B. The insertion part 26B is inserted into the insertion groove 31B and abuts against the inner wall of the insertion groove 31B.

[0136] Further, please refer to Figures 23-24. The cross-section of the insertion part 26B and the insertion groove 31B along the direction perpendicular to the second axis L2 is square. That is, the insertion groove 31B is a square groove and the insertion part 26B is a square column. When the transmission part 22B is inserted into the insertion groove 31B, the square column and the square groove cooperate to prevent relative rotation between the transmission part 22B and the roller brush assembly 30B around the second axis L2.

[0137] As shown in Figure 25, the insertion part 26B is provided with a protrusion structure 261B, and the inner wall of the insertion groove 31B is provided with a step structure 32B. Specifically, the step structure 32B is located on the inner side wall of the square groove, and the protrusion structure 261B is located at the end of the square column. When the transmission part 22B is inserted into the insertion groove 31B, the square column and the square groove cooperate, and the protrusion structure 261B at the end of the square column is engaged with the step structure 32B on the inner side wall of the square groove, thereby preventing the roller brush assembly 30B from disengaging from the transmission part 22B without external force, that is, preventing relative sliding between the roller brush assembly 30B and the transmission part 22B along the extension direction of the second axis L2.

[0138] Secondly, this application also provides a cleaning device 2B, including a main unit 50B, a drive assembly, and a roller brush device 1B as described in any of the above embodiments. Both the drive assembly and the roller brush device 1B are disposed on the main unit 50B. The drive assembly is connected to the output portion 13B on the housing assembly 10B of the roller brush device 1B, and the drive assembly is used to drive the output portion 13B to rotate around a second axis L2. After the roller brush assembly 30B is installed in the receiving cavity 11B, the drive assembly provides rotational torque to drive the output portion 13B to rotate around the second axis L2. The output portion 13B drives the roller brush assembly 30B to rotate around the second axis L2 via the transmission portion 22B on the support body 24B, thereby realizing that the drive assembly drives the roller brush assembly 30B on the roller brush device 1B to rotate. The drive assembly may include a motor for outputting power and a gearbox for speed regulation.

[0139] As shown in Figure 26, taking a robotic vacuum cleaner as an example, the roller brush device 1B can be installed at the bottom of the main unit 50B. When the robotic vacuum cleaner is moving, the roller brush device 1B at the bottom can rotate to perform sweeping work. Since there are other components on both sides of the roller brush device 1B on the robotic vacuum cleaner, the roller brush assembly 30B cannot be disassembled from the sides of the robotic vacuum cleaner. Therefore, in this embodiment, the roller brush assembly 30B is installed by setting a mounting bracket 20B. The user can manually adjust the movement of the bracket body 24B relative to the housing assembly 10B, so that the roller brush assembly 30B can slide and rotate synchronously with the bracket body 24B. This allows the bracket body 24B to drive the roller brush assembly 30B to rotate out of the bottom cavity of the robotic vacuum cleaner, so as to facilitate the disassembly of the roller brush assembly 30B. The roller brush assembly 30B can be disassembled and replaced separately without having to be pulled out from the side of the robotic vacuum cleaner.

[0140] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. A roller brush device, characterized in that, The roller brush device is used in floor cleaning equipment. The roller brush device includes a housing assembly, a first roller brush, and a second roller brush. The second roller brush and the first roller brush are spaced apart on the housing assembly along a first direction. The second roller brush and the first roller brush may form a gap in the first direction. At least one of the first roller brush and the second roller brush may be moved along the first direction to adjust the width of the gap between the first roller brush and the second roller brush in the first direction.

2. The roller brush device according to claim 1, characterized in that, The housing assembly has a receiving cavity and an adsorption port. The receiving cavity is connected to the adsorption port. The first roller brush and the second roller brush are housed in the receiving cavity. The adsorption port is positioned corresponding to the gap.

3. The roller brush device according to claim 1, characterized in that, The first or second roller brush is configured to be movable relative to the housing assembly in the first direction to adjust the width of the gap.

4. The roller brush device according to claim 3, characterized in that, The roller brush device further includes a first drive shaft, through which the first roller brush is mounted on the housing assembly; The first drive shaft is rotatably connected to the housing assembly, and the positions of the first drive shaft and the housing assembly in the first direction are relatively fixed. The first roller brush is connected to the first drive shaft, and the first roller brush can move relative to the first drive shaft along the first direction.

5. The roller brush device according to claim 4, characterized in that, The first roller brush is configured to rotate relative to the first drive shaft, so that the first roller brush moves relative to the first drive shaft in the first direction.

6. The roller brush device according to claim 5, characterized in that, The first roller brush is sleeved on the outside of the first drive shaft. The first roller brush is provided with a guide groove. The guide groove is spirally arranged from one end of the first roller brush to the other end. The first drive shaft is provided with a protrusion, which is accommodated in the guide groove. The protrusion can slide along the guide groove under the drive of the first drive shaft, so that the first roller brush moves relative to the first drive shaft in the first direction.

7. The roller brush device according to claim 6, characterized in that, The roller brush device further includes a first mounting member, the first roller brush is sleeved outside the first mounting member, one end of the first drive shaft is accommodated inside the first mounting member, and the guide groove is disposed on the inner wall of the first mounting member; The first mounting component is located at the end of the first roller brush near the second roller brush.

8. The roller brush device according to claim 7, characterized in that, The first mounting member has a first limiting part and a second limiting part at both ends in the first direction, which are used to limit the movement stroke of the first roller brush relative to the first drive shaft.

9. The roller brush device according to claim 4, characterized in that, The housing assembly includes a housing and a first support, the housing enclosing a receiving cavity; The first bracket is disposed on the housing and housed in the accommodating cavity, and one end of the first drive shaft passes through the first bracket.

10. The roller brush device according to claim 9, characterized in that, The first roller brush has a limiting groove, and one end of the first bracket is accommodated in the limiting groove; When the first roller brush moves relative to the first drive shaft, one end of the first bracket slides within the limiting groove.

11. The roller brush device according to claim 9, characterized in that, The end of the first drive shaft connected to the first bracket is provided with a connector, and the cross-section of the connector in the direction perpendicular to the first direction is at least partially larger than the cross-section of the end of the first drive shaft connected to the first bracket in the direction perpendicular to the first direction. The connector is detachably connected to the first drive shaft.

12. The roller brush device according to claim 4, characterized in that, The roller brush device further includes a second drive shaft, the second roller brush is mounted on the housing assembly via the second drive shaft, the second roller brush is configured to be fixed relative to the housing assembly in the first direction, and the second drive shaft is used to drive the second roller brush to rotate.

13. The roller brush device according to claim 3, characterized in that, The roller brush device further includes a first drive shaft, through which the first roller brush is mounted on the housing assembly; The first drive shaft includes a mounting part and a telescopic part. The mounting part is rotatably connected to the housing assembly and is fixed relative to the position of the housing assembly in the first direction. The telescopic part is fixedly connected to the first roller brush. The telescopic part can move relative to the mounting part along the first direction and drive the first roller brush to move synchronously to adjust the width of the gap.

14. The roller brush device according to claim 1, characterized in that, The first roller brush includes a first brush body and a first cleaning element, wherein the first cleaning element is spirally disposed on the outer wall of the first brush body from one end to the other end; The second roller brush includes a second brush body and a second cleaning component. The second cleaning component is spirally disposed on the outer wall of the second brush body from one end to the other end, and the spiral direction of the second cleaning component is opposite to that of the first cleaning component.

15. The roller brush device according to claim 1, characterized in that, The housing assembly includes a movable part and a fixed part. The movable part can move relative to the fixed part along the first direction and drive the first roller brush and / or the second roller brush to move synchronously to adjust the width of the gap.

16. The roller brush device according to any one of claims 1-15, characterized in that, The roller brush device has a working state and a self-cleaning state. The roller brush device includes an entanglement detection element, which is used to acquire entanglement information of the roller brush device in the working state. The roller brush device is configured to adjust the width of the gap based on the entanglement information.

17. The roller brush device according to claim 16, characterized in that, The winding detection component includes a rotation speed sensor, which is used to detect the rotation speed of the first roller brush, and the rotation speed sensor obtains the winding information based on the rotation speed.

18. The roller brush device according to any one of claims 1-15, characterized in that, The roller brush device has a working state and a self-cleaning state. The roller brush device is configured to adjust the width of the gap when switching the state of the roller brush device. The width of the gap in the self-cleaning state is greater than the width of the gap in the working state.

19. The roller brush device according to claim 1, characterized in that, The roller brush device includes a roller brush assembly and a comb tooth section. The housing assembly has a receiving cavity and an adsorption port communicating with the receiving cavity. The roller brush assembly is located in the receiving cavity. The roller brush assembly is rotatably connected to the housing assembly through a rotating shaft. A bristle structure is provided on the periphery of the roller brush assembly. The bristle structure is arranged in a spiral shape around the circumference of the roller brush assembly. The comb teeth are installed on the inner sidewall of the accommodating cavity. The comb teeth include a plurality of tooth structures arranged axially at intervals along the rotating shaft. The comb teeth include a proximal end near the adsorption port and a distal end away from the adsorption port relative to the proximal end. At least a portion of the tooth structures located at the proximal end are provided with hook structures.

20. The roller brush device according to claim 19, characterized in that, A portion of the comb teeth has a hook structure on its tooth structure, and the tooth structure with the hook structure is a hook tooth. Another portion of the comb teeth has a guide sidewall for contacting the bristle structure, and the tooth structure with the guide sidewall is a guide tooth. At least some of the guide teeth are at a distance greater than the distance between the hook teeth and the adsorption port.

21. The roller brush device according to claim 19, characterized in that, Along the rotation path of the roller brush assembly, the suction port is arranged upstream of the rotation path of the roller brush assembly, and the tooth structure is arranged downstream of the rotation path of the roller brush assembly. And / or, the hook structure is located on the side of the tooth structure facing the suction port; And / or, the roller brush assembly has a first gap opposite to the position of the suction port.

22. The roller brush device according to claim 21, characterized in that, The tooth structure has a first sidewall and a second sidewall. The hook structure is disposed on the first sidewall. The second sidewall is disposed opposite to the inner sidewall of the accommodating cavity. The second sidewall extends obliquely away from the first sidewall and close to the inner sidewall of the accommodating cavity.

23. The roller brush device according to claim 19, characterized in that, The tooth structure extends in the same direction as the helical direction of the bristle structure; and / or, the extension directions of the plurality of tooth structures are parallel to each other.

24. The roller brush device according to claim 19, characterized in that, The roller brush assembly has a first gap opposite to the position of the adsorption port. The roller brush assembly includes a first roller brush and a second roller brush arranged at intervals along the axial direction of the rotating shaft. The first gap is located between the first roller brush and the second roller brush. The bristle structure includes a first bristle and a second bristle. The first bristle is disposed on the periphery of the first roller brush, and the second bristle is disposed on the periphery of the second roller brush. Along the axial direction of the rotating shaft, the spiral direction of the first bristle is opposite to that of the second bristle.

25. The roller brush device according to claim 24, characterized in that, The orthographic projection of the first bristle on the rotating shaft partially overlaps with the orthographic projection of the second bristle on the rotating shaft.

26. The roller brush device according to claim 24, characterized in that, The first roller brush and the second roller brush have a first line of symmetry, which is perpendicular to the axis of rotation of the shaft. The comb section includes a first tooth group and a second tooth group, both of which include multiple tooth structures. The first tooth group and the second tooth group are symmetrically distributed about the first line of symmetry.

27. The roller brush device according to claim 26, characterized in that, The tooth structure in the first tooth group extends in the same direction as the spiral direction of the first bristles, and the tooth structure in the second tooth group extends in the same direction as the spiral direction of the second bristles.

28. The roller brush device according to claim 26, characterized in that, The first tooth group includes a first tooth structure near the first line of symmetry, and the second tooth group includes a second tooth structure near the first line of symmetry. The hook structure is provided on both the first tooth structure and the second tooth structure, and the first tooth structure and the second tooth structure are symmetrically distributed about the first line of symmetry.

29. The roller brush device according to claim 26, characterized in that, The extension directions of the plurality of tooth structures in the first tooth group are parallel to each other, and the extension directions of the plurality of tooth structures in the second tooth group are parallel to each other.

30. The roller brush device according to claim 26, characterized in that, The tooth structure has a first sidewall, and the hook structure is disposed on the first sidewall; The tooth structure includes a first end and a second end disposed opposite to each other. The first sidewall is located at the first end. The distance between the first end and the first line of symmetry along the axis of rotation is S1, and the distance between the second end and the first line of symmetry along the axis of rotation is S2, where S1 < S2.

31. The roller brush device according to claim 19, characterized in that, The comb teeth also include a mounting plate and a snap-fit ​​component. The snap-fit ​​component and the tooth structure are disposed on opposite sides of the mounting plate, and the mounting plate is snapped into the housing assembly via the snap-fit ​​component.

32. The roller brush device according to claim 1, characterized in that, The roller brush device includes a mounting bracket and a roller brush assembly. The housing assembly has a receiving cavity and a cleaning port communicating with the receiving cavity. The mounting bracket includes a bracket body and a rotating part. The rotating part is disposed on the side of the bracket body and is rotatably connected to the housing about a first axis to drive the bracket body to rotate about the first axis. The roller brush assembly is detachably connected to the bracket body and is capable of rotating relative to the housing assembly about a second axis of the roller brush assembly. The second axis is parallel to the first axis. When the support body rotates relative to the housing assembly around the first axis, it drives the roller brush assembly to enter and exit the receiving cavity through the cleaning port.

33. The roller brush device according to claim 32, characterized in that, The housing assembly is provided with an output section for connection with the motor drive; The main body of the bracket is provided with a transmission part for transmission connection with the output part. The transmission part is rotatably connected to the main body of the bracket through a bearing. The transmission part is connected to the roller brush assembly and can drive the roller brush assembly to rotate around the second axis.

34. The roller brush device according to claim 33, characterized in that, The bracket body is slidably connected to the rotating part, and the bracket body can slide relative to the rotating part along the extension direction of the first axis, so that the transmission part can contact and separate from the output part.

35. The roller brush device according to claim 34, characterized in that, The roller brush device further includes a limiting member, which is detachably connected to the housing assembly so that the limiting member can contact the side of the mounting bracket facing the roller brush assembly, thereby restricting the sliding of the bracket body relative to the rotating part.

36. The roller brush device according to claim 34, characterized in that, The roller brush device also includes a cover plate that is detachably connected to the housing assembly; The cover plate has a first opening, which covers the cleaning port, and the second opening corresponds to the cleaning port. The projected area of ​​the cleaning port is larger than the projected area of ​​the first opening. And / or, the cover plate is provided with a limiting member, which is located on the side of the bracket body away from the output part when the cover plate is closed on the housing assembly, and the limiting member contacts the mounting bracket to restrict the sliding of the bracket body relative to the rotating part.

37. The roller brush device according to claim 34, characterized in that, The bracket body is provided with a snap-fit ​​part, the housing assembly is provided with a snap-fit ​​groove, and the movable trajectory of the bracket body in the extension direction of the first axis has a first preset position and a second preset position. When the bracket body is in the first preset position, the bracket body is located in the accommodating cavity, the transmission part is in contact with the output part, and the snap-fit ​​part is engaged with the slot so that the bracket body is locked with the housing assembly; When the bracket body is in the second preset position, the transmission part separates from the output part, and the locking part separates from the slot, so as to unlock the bracket body from the housing assembly.

38. The roller brush device according to claim 37, characterized in that, The mounting bracket further includes a first elastic element, which is connected to the bracket body and the housing assembly. The first elastic element is used to slide the bracket body back from the second preset position to the first preset position.

39. The roller brush device according to claim 32, characterized in that, The mounting bracket further includes a second elastic element sleeved on the rotating part. The second elastic element is connected to the bracket body and the housing assembly. The second elastic element is used to rotate the bracket body from outside the accommodating cavity back into the accommodating cavity.

40. The roller brush device according to claim 33, characterized in that, The roller brush assembly has a insertion groove on the side facing the transmission part, and the transmission part has an insertion part at the end away from the rotating part. The insertion part is inserted into the insertion groove and abuts against the inner wall of the insertion groove.

41. The roller brush device according to claim 40, characterized in that, The cross-section of the insertion part and the insertion slot is square; the insertion part is provided with a stepped structure, and the inner wall of the insertion slot is provided with a protruding structure; the transmission part is inserted into the insertion slot, and the protruding structure is engaged with the stepped structure.

42. The roller brush device according to claim 32, characterized in that, The rotating part drives the support body to rotate around the first axis by an angle α, where α satisfies 0≤α≤90°.

43. The roller brush device according to claim 32, characterized in that, Two mounting brackets are provided, and the two mounting brackets are located on opposite sides of the roller brush assembly; The roller brush assembly includes a first roller brush and a second roller brush, which are arranged at intervals along the extension direction of the second axis. The first roller brush is mounted on one of the mounting brackets, and the second roller brush is mounted on the other mounting bracket.

44. A roller brush device, characterized in that, The roller brush device is used in floor cleaning equipment. The roller brush device includes a housing assembly and a first roller brush. The housing assembly has a receiving cavity, and the first roller brush is housed in the receiving cavity. The housing assembly has a first end wall and a second end wall disposed opposite to each other in a first direction. One end of the first roller brush is mounted on the first end wall, and the other end of the first roller brush can form a gap with the second end wall in the first direction. At least one of the first roller brush and the second end wall can move along the first direction to adjust the width of the gap between the first roller brush and the second end wall in the first direction.

45. The roller brush device according to claim 44, characterized in that, The roller brush device includes a first drive shaft, and the first roller brush is mounted in the accommodating cavity via the first drive shaft. The first drive shaft is rotatably connected to the housing assembly, and the positions of the first drive shaft and the housing assembly in the first direction are relatively fixed. The first roller brush is connected to the first drive shaft, and the first roller brush can move relative to the first drive shaft along the first direction.

46. ​​The roller brush device according to claim 45, characterized in that, The first roller brush is sleeved on the outside of the first drive shaft. The first roller brush is provided with a guide groove. The guide groove is spirally arranged from one end of the first roller brush to the other end. The first drive shaft is provided with a protrusion, which is accommodated in the guide groove. The protrusion can slide along the guide groove under the drive of the first drive shaft, so that the first roller brush moves relative to the first drive shaft in the first direction.

47. The roller brush device according to any one of claims 44-46, characterized in that, The roller brush device has a working state and a self-cleaning state. The roller brush device is configured to adjust the width of the gap when switching the state of the roller brush device. The width of the gap in the self-cleaning state is greater than the width of the gap in the working state.

48. A cleaning device, characterized in that, The device includes a dust box and a roller brush device as described in any one of claims 1-47, wherein the roller brush device includes a dust box, the dust box is mounted on the housing assembly, the housing assembly is provided with an adsorption port, and the dust box communicates with the adsorption port.

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