Rolling brush device

Abstract

The utility model relates to the field of cleaning equipment, in particular to a rolling brush device which comprises a shell provided with a containing cavity. The rolling brush assembly is detachably installed on the shell and located in the containing cavity, the rolling brush assembly comprises a support and a rolling brush, one end of the rolling brush is rotatably connected with the support, and the other end of the rolling brush is a free end; in the length direction of the containing cavity, the support is provided with a first abutting face, and the containing cavity is provided with a second abutting face. The force application assembly is arranged on the shell / the containing cavity, acting force is integrally applied to the support of the rolling brush assembly through the force application assembly, the first abutting face of the support abuts against the second abutting face of the shell, and therefore the rolling brush assembly is effectively fixed in the length direction of the containing cavity. According to the design, the problem that the free end is bent or deformed due to gravity and rotating centrifugal force when the single-side cantilever type rolling brush rotates at a high speed is solved, and the cleaning effect of the cleaning equipment is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment, and more particularly to a roller brush device. Background Technology

[0002] Cleaning equipment, such as cleaning robots, has become an indispensable automated cleaning tool in modern homes. They can navigate autonomously and efficiently clean various environments, greatly reducing the burden on users. Among these cleaning devices, the roller brush plays a crucial role, effectively removing dust, debris, hair, and other impurities from the floor through its rotational motion.

[0003] A common roller brush design is the single-sided cantilever roller brush, where only one end is connected to the body of the cleaning device, while the other end remains free. This design is not only simple in structure, but also, due to the presence of the free end, effectively reduces the possibility of long, thin objects such as hair getting tangled in the roller brush, thus improving the anti-tangling effect.

[0004] However, single-sided cantilever roller brushes also have some inherent problems. For example, to maintain the stability of the roller brush during high-speed rotation, its fixed end must be tightly connected to the base of the cleaning equipment, and there is usually no additional support or reinforcement structure. This design makes the free end of the roller brush prone to bending or deformation under the combined effects of gravity and centrifugal force, affecting the cleaning effect. At the same time, because the roller brush is fixedly connected to the base, users may encounter difficulties in disassembling when cleaning, maintaining, or replacing the roller brush, reducing the convenience and maintainability of use. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a roller brush device. A force-applying component applies force to the support of the roller brush assembly, causing the first contact surface of the support to abut against the second contact surface of the housing, thereby effectively fixing the roller brush assembly along the length of the receiving cavity. This design overcomes the problem of bending or deformation of the free end of a single-sided cantilever roller brush due to gravity and centrifugal force during high-speed rotation, significantly improving the stability of the roller brush and ensuring the cleaning effect of the cleaning equipment.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a roller brush device, comprising:

[0007] A housing having a receiving cavity;

[0008] A roller brush assembly is detachably mounted on the housing and located within the receiving cavity. The roller brush assembly includes a bracket and a roller brush. One end of the roller brush is rotatably connected to the bracket, and the other end of the roller brush is a free end. In the longitudinal direction of the receiving cavity, the bracket has a first abutting surface facing the receiving cavity, and the receiving cavity has a second abutting surface facing the bracket.

[0009] A force-applying component is disposed on the housing / receiving cavity, and the force-applying component is used to provide a force to cause the first abutment surface and the second abutment surface to abut against each other.

[0010] Furthermore, the bracket includes a mounting base, and the receiving cavity includes a first sub-cavity and a second sub-cavity that communicate with each other. The first sub-cavity is used to fix the mounting base, and the second sub-cavity is used to receive the roller brush.

[0011] Furthermore, it also includes a brush cover, which is detachably mounted to the housing and together forms the second sub-cavity, and a force-applying component is mounted to the housing and together forms the first sub-cavity.

[0012] Furthermore, the bracket also includes a fixing member that extends from the side wall of the mounting base along the width direction of the receiving cavity. The first abutting surface is located on the side of the fixing member near the receiving cavity, and the second abutting surface is located on the side of the receiving cavity opposite to the first abutting surface.

[0013] Furthermore, the first sub-cavity includes a first side and a second side facing away from each other in the width direction, and the receiving cavity also includes a third sub-cavity, which is located on the first side of the first sub-cavity and / or the second side of the first sub-cavity, and the third sub-cavity is used to install the fixing member.

[0014] Furthermore, the housing also includes a fourth mounting groove, which is located on one side of the third sub-cavity and communicates with the third sub-cavity. The fourth mounting groove is used to install the force-applying component.

[0015] Furthermore, the fasteners include two members, which are symmetrically arranged on the mounting base. The third sub-cavities include two members, which are symmetrically arranged on the first side and the second side of the first sub-cavity, respectively. The two third sub-cavities correspond to the two fasteners, and the fasteners are housed within their respective third sub-cavities. The fourth mounting slots include two members, which are symmetrically arranged along the length of the two third sub-cavities and communicate with them. The force-applying component includes two locking parts, which are fitted onto the fourth mounting slots. The locking parts abut against and fix the fasteners, so that the first abutting surface and the second abutting surface abut against each other.

[0016] Furthermore, the force-applying component also includes a limiting seat, wherein the locking portion is symmetrically arranged on both sides of the limiting seat in the width direction; the housing is provided with a first mounting groove, and the limiting seat is provided with a second mounting groove. When the limiting seat is installed on the housing, the first mounting groove and the second mounting groove are positioned correspondingly and together form the first sub-cavity.

[0017] Furthermore, the housing is provided with a fixing groove, and the fixing member is at least partially received in the fixing groove. When the limiting seat is installed on the housing, the fixing groove and the side of the limiting seat facing the receiving cavity together form the third sub-cavity.

[0018] Furthermore, the roller brush includes a brush cylinder with bristles and a brush strip, and a rubber core. The brush cylinder is screwed onto the outer side of the rubber core, and the end of the rubber core is connected to the mounting base through a bearing assembly. The roller brush can rotate relative to the bracket to clean the surface to be cleaned.

[0019] The beneficial effects of this utility model are as follows:

[0020] This invention applies force to the support of the roller brush assembly through a force-applying component, causing the first contact surface of the support to abut against the second contact surface of the housing, thereby effectively fixing the roller brush assembly along the length of the receiving cavity. This design overcomes the problem of bending or deformation of the free end of a single-sided cantilever roller brush due to gravity and centrifugal force during high-speed rotation, significantly improving the stability of the roller brush and ensuring the cleaning effect of the cleaning equipment.

[0021] The roller brush assembly of this invention features a detachable installation, allowing users to easily remove the assembly from the housing by simply opening the force application component and the roller brush cover. This design greatly facilitates the cleaning, maintenance, or replacement of the roller brush, improving the ease of use and maintainability of the cleaning equipment. Attached Figure Description

[0022] Figure 1 This is a top view of the roller brush device.

[0023] Figure 2 This is a top view of the shell structure.

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the shell.

[0025] Figure 4 This is a schematic diagram of the structure after the force-applying components and the support are assembled.

[0026] Figure 5 This is a structural diagram of the force-applying components and the support before assembly.

[0027] Figure 6 This is another structural diagram from the perspective of the force-applying components and the bracket before assembly.

[0028] Figure 7 This is a structural diagram showing the force-applying components, support, and roller brush assembly.

[0029] Figure 8 yes Figure 7 A cross-sectional structural diagram omitting the force-applying components.

[0030] Figure 9 This is an exploded view of the roller brush assembly.

[0031] Figure 10 This is an exploded structural diagram of the roller brush device.

[0032] Reference numerals: 11. Housing; 111. First mounting slot; 112. Fixing slot; 113. Fourth mounting slot; 114. Second contact surface; 2. Roller brush assembly; 21. Bracket; 211. Mounting base; 212. Fixing element; 213. First contact surface; 214. Bearing assembly; 215. Fourth contact surface; 22. Roller brush; 221. Brush cylinder; 222. Brush bristles; 223. Brush strip; 224. Rubber core; 3. Force application assembly; 31. Limiting seat; 311. Second mounting slot; 312. Third mounting slot; 32. Locking part; 321. Third contact surface; 322. C-angle; 4. Roller brush cover; 5. Drive assembly. Detailed Implementation

[0033] Please see Figure 1-10 The roller brush device of this application is used in cleaning equipment. The roller brush device includes a housing 11, a roller brush assembly 2, and a force-applying assembly 3. The housing 11 has a receiving cavity, and the roller brush assembly 2 is detachably mounted on the housing 11 and located within the receiving cavity. (See attached...) Figure 1 As shown, the roller brush assembly 2 includes a bracket 21 and a roller brush 22. One end of the roller brush 22 is rotatably connected to the bracket 21, and the other end of the roller brush 22 is a free end.

[0034] In this regard, please combine Figure 1 , Figure 7-8 The roller brush 22 is generally cylindrical in shape and has a first end and a second end that are arranged opposite to each other. The first end of the roller brush 22 is rotatably connected to the bracket 21, and the second end of the roller brush 22 is a free end.

[0035] In some specific embodiments, the length direction X of the roller brush 22 can be either the direction from the first end of the roller brush 22 to the second end of the roller brush 22, or the direction from the second end of the roller brush 22 to the first end of the roller brush 22. The length extension direction of each receiving cavity is the same as the length direction X of the roller brush 22 installed in the corresponding receiving cavity. The width direction Y of the roller brush device is perpendicular to the length direction X of the roller brush 22. The width direction Y of the housing 11 is perpendicular to the length direction X of the roller brush 22. The height direction Z of the roller brush device is perpendicular to both the length direction X and the width direction Y of the roller brush device. The height direction Z of the housing 11 is perpendicular to both the length direction X and the width direction Y of the housing 11.

[0036] The support 21 has a first abutment surface 213 facing the receiving cavity (in the longitudinal direction X of the receiving cavity), and the receiving cavity has a second abutment surface 114 facing the support 21 (in the longitudinal direction X of the receiving cavity). In this embodiment, a force-applying component 3 is provided on the housing 11, and the force-applying component 3 is used to provide a force that causes the first abutment surface 213 and the second abutment surface 114 to abut against each other.

[0037] In the roller brush device of this application, the force-applying component 3 of the roller brush device can apply force to the support 21 of the roller brush assembly 2, so that the first abutting surface 213 of the support 21 and the second abutting surface 114 of the housing 11 abut against each other in the longitudinal direction X of the receiving cavity (which can be understood as applying a lateral force from the side), and the support 21 and the receiving cavity are relatively fixed. At this time, the roller brush 22 connected to the support 21 can rotate stably relative to the support 21. When the roller brush assembly 2 needs to be cleaned, the force-applying component 3 can release the external force applied to the support 21 and release the restriction on the support 21, so that the roller brush assembly 2 can be more easily disassembled from the housing 11.

[0038] In other embodiments, the force-applying component 3 is connected to the housing 11 and can rotate in the positive direction relative to the housing 11 about the length direction X of the receiving cavity. In this embodiment, the force-applying component 3 includes a limiting seat 31 and a locking part 32 disposed on the side of the limiting seat 31. The limiting seat 31 rotates in the positive direction relative to the housing 11 about the length direction X of the receiving cavity via a rotating shaft, so that the side of the receiving cavity facing the locking part 32 separates from the side of the locking part 32 facing the receiving cavity. That is, at this time, the force-applying component 3 releases the external force applied to the bracket 21 and releases the restriction on the bracket 21, so that the roller brush assembly 2 can be more easily disassembled from the housing 11. The limiting seat 31 can also rotate in the opposite direction relative to the housing 11, so that the side of the receiving cavity facing the locking part 32 contacts the side of the locking part 32 facing the receiving cavity, which is in a closed state. The positive rotation can be clockwise, and the negative rotation is counterclockwise. Conversely, the positive rotation can be counterclockwise, and the negative rotation is clockwise.

[0039] Furthermore, in some embodiments, the force-applying component 3 is designed as a separate part, so it can be directly and detachably installed in the receiving cavity, and the bracket 21 is installed in the receiving cavity. When the force-applying component 3 is installed in the receiving cavity and cooperates with the receiving cavity, the locking part 32 in the force-applying component 3 abuts against and fixes the bracket 21, so that the first abutting surface 213 and the second abutting surface 114 abut against each other.

[0040] In some embodiments, the process of installing the roller brush assembly 2 into the receiving cavity can also involve directly inserting the roller brush assembly 2 into the receiving cavity along the height direction Z of the housing 11, and then pushing the roller brush assembly 2 along the length direction X of the receiving cavity to move the roller brush assembly 2 towards one end of the receiving cavity. After installation, the first end of the roller brush assembly 2 is located at one end of the receiving cavity, and the bracket 21 is fixedly installed inside the receiving cavity.

[0041] Furthermore, in some embodiments, the bracket 21 includes a mounting base 211, which is disposed at the first end of the roller brush 22 and located outside the roller brush 22. The roller brush 22 can rotate relative to the mounting base 211 and the housing 11, and is driven to rotate by the drive assembly 5. The mounting base 211 is fixed relative to the housing 11. The mounting base 211 is generally a columnar structure, and the axial direction of the mounting base 211 is the same as the length direction X of the corresponding receiving cavity. The longitudinal cross-sectional shape of the mounting base 211 includes, but is not limited to, a circle, an ellipse, a quadrilateral, or a pentagon. When the longitudinal cross-sectional shape of the mounting base 211 is circular, the roller brush assembly 2 is easier to install on the receiving cavity. When the longitudinal cross-sectional shape of the mounting base 211 is a polygon such as a quadrilateral or a pentagon, the mounting base 211 is less likely to rotate with the housing 11, thereby making the connection between the bracket 21 and the roller brush assembly 2 connected to the bracket 21 and the housing 11 more stable.

[0042] Furthermore, it also includes a roller brush cover 4. In this embodiment, the receiving cavity of the housing 11 includes a first sub-cavity and a second sub-cavity that communicate with each other. When the housing 11 is in the closed state, the housing 11 and the roller brush cover 4, which cooperate with each other, constitute the second sub-cavity. The force-applying component 3 is installed on the housing 11 and together forms the first sub-cavity. When the roller brush assembly 2 is installed in the receiving cavity, the mounting base 211 can correspond to the first sub-cavity and be fixedly installed in the first sub-cavity. The roller brush 22, which is connected to the mounting base 211, can extend into and be received in the second sub-cavity.

[0043] Furthermore, please refer to Figure 4 and Figure 5-6In some embodiments, the bracket 21 may further include a fixing member 212, which can position the mounting base 211 and increase the contact area between the bracket 21 and the housing 11. The material of the fixing member 212 may be the same as or different from the material of the mounting base 211. A first abutting surface 213 is provided on the side of the fixing member 212 near the roller brush 22, and a second abutting surface 114 is provided on the side of the receiving cavity opposite to the first abutting surface 213. The force-applying component 3 applies force to the fixing member 212 through the locking part 32, so that the first abutting surface 213 abuts against the second abutting surface 114.

[0044] The side of the locking part 32 near the fixing member 212 forms a third abutment surface 321 (see reference). Figure 5 Meanwhile, a fourth abutment surface 215 is provided on the side of the bracket opposite to the third abutment surface 321 (see reference). Figure 6 Furthermore, the force-applying component 3 applies force to the fourth abutment surface 215 of the fastener 212 through the third abutment surface 321 of the locking part 32, so that the first abutment surface 213 of the fastener abuts against the second abutment surface 114.

[0045] Considering that users may not be able to install the bracket 21 in place every time they disassemble and assemble the roller brush assembly 2 during daily use, if the locking part 32 does not have any chamfer, the locking part 32 may get stuck and not be installed properly. Therefore, in this embodiment, the end of the locking part 32 with the third abutment surface 321 is designed with a C-angle 322 (chamfered right angle). Even if there is a slight deviation in the installation position of the bracket 21, the bevel on the C-angle 322 of the locking part 32 can push the fixing part 212 to move towards the second abutment surface 114, ensuring that it can be installed properly.

[0046] More specifically, in some embodiments, the inner wall of the housing 11 facing the limiting seat 31 is provided with a first mounting groove 111, and the inner wall of the limiting seat 31 facing the housing 11 is provided with a second mounting groove 311. When the limiting seat 31 is installed on the housing 11, the first mounting groove 111 and the second mounting groove 311 are positioned correspondingly, and the first sub-cavity is formed by the mutually cooperating first mounting groove 111 and second mounting groove 311. When the roller brush assembly 2 is installed on the housing 11, the mounting seat 211 can be positioned to limit the inner wall of the first mounting groove 111 and the inner wall of the second mounting groove 311, respectively.

[0047] Please see Figures 2 to 3In some embodiments, the receiving cavity further includes a third sub-cavity, which communicates with the first sub-cavity. The housing 11 is provided with a fixing groove 112, and the limiting seat 31 is provided with a third mounting groove 312. The fixing member 212 is at least partially received in the fixing groove 112 and the third mounting groove 312. When the limiting seat 31 is installed on the housing 11, the fixing groove 112 and the third mounting groove 312 of the limiting seat 31 facing the housing 11 together form the third sub-cavity.

[0048] The side of the first mounting groove 111 facing the mounting base 211, the side of the fixing groove 112 facing the fixing member 212, the side of the second mounting groove 311 facing the mounting base 211, and the side of the third mounting groove 312 facing the fixing member 212 together constitute the complete second abutment surface 114 (see reference). Figure 6 Furthermore, the fastener 212 and the side of the mounting base 211 facing away from the roller brush 22 together form a complete first contact surface 213 (see reference). Figure 5 ).

[0049] In some embodiments, the fastener 212 may include one fastener 212, which can be disposed on one side of the mounting base 211, in which case the third sub-cavity corresponds to the fastener 212. When there is only one fixing member 212, the housing 11 also includes a fourth mounting groove 113. The fourth mounting groove 113 is located on the side of the third sub-cavity facing the roller brush 22, and the fourth mounting groove 113 is connected to the third sub-cavity. The fourth mounting groove 113 is used to install the locking part 32. Two locking parts 32 are fitted on the fourth mounting groove 113. At the same time, the locking part 32 abuts against and fixes the fixing member 212, so that the first abutting surface 213 and the second abutting surface 114 abut against each other. That is, the locking part 32 applies a lateral force to the fixing member 212, so that the first abutting surface 213 and the second abutting surface 114 are tightly fitted together. Moreover, the locking part 32 and the fourth mounting groove 113 are interference fit, which can ensure that the locking part 32 can apply a greater force to the fixing member 212, thereby making the two fit more securely.

[0050] In other embodiments, the fastener 212 may include two fasteners 212, which are symmetrically arranged on the mounting base 211. That is, the two fasteners 212 are respectively installed on both sides of the mounting base 211. In this case, the third sub-cavity also includes two, which are symmetrically arranged and correspond to the two fasteners 212 respectively, and the fasteners 212 are received in the corresponding third sub-cavity. Specifically, when there is one fixing member 212, the housing 11 also includes a fourth mounting groove 113. The fourth mounting groove 113 is located on the side of the third sub-cavity facing the roller brush 22, and the fourth mounting groove 113 communicates with the third sub-cavity. The fourth mounting groove 113 is used to install the locking part 32. Two locking parts 32 are fitted on the fourth mounting groove 113. At the same time, the locking part 32 abuts against and fixes the fixing member 212, so that the first abutting surface 213 and the second abutting surface 114 abut against each other. That is, the locking part 32 applies a lateral force to the fixing member 212, so that the first abutting surface 213 and the second abutting surface 114 are tightly fitted together. Moreover, the locking part 32 and the fourth mounting groove 113 are interference fit, which can ensure that the locking part 32 can apply a greater force to the fixing member 212, thereby making the two fit more securely.

[0051] Additionally, regarding the disassembly process of the roller brush assembly 2: First, open the roller brush cover 4 to expose the receiving cavity. Next, open the limiting seat 31 of the force application component 3. The limiting seat 31 rotates relative to the housing 11 in the positive direction of the length X of the receiving cavity via a rotating shaft. At this time, the locking part 32 separates from the fixing member 212, releasing the fixing effect on the bracket 21. Since the force application component 3 has been opened, the corresponding fourth mounting slot 113 is no longer occupied. At this time, the roller brush assembly 2 can be pushed in the length X of the receiving cavity, causing the roller brush assembly 2 to move towards one end of the receiving cavity. During this process, the fixing member 212 will also be moved to the position of the fourth mounting slot 113. Finally, pull out the entire roller brush assembly 2 directly along the height Z of the housing 11 to complete the disassembly process.

[0052] Installation Process: The installation process is the reverse of the disassembly process. First, place the roller brush assembly 2 into the receiving cavity along the height direction Z of the housing 11, ensuring that the fixing member 212 is aligned with the fourth mounting slot 113. Then, push the roller brush assembly 2 along the length direction X of the receiving cavity until it reaches the predetermined position. Next, close the limiting seat 31 of the force application component 3. The limiting seat 31 rotates in the opposite direction relative to the housing 11 about the length direction X of the receiving cavity via a rotating shaft. At this time, the locking part 32 abuts against the fixing member 212 and fixes the bracket 21, so that the first abutting surface 213 and the second abutting surface 114 abut against each other. Finally, cover the roller brush cover 4 to complete the installation process.

[0053] See Figure 8-9Furthermore, the roller brush 22 includes a brush cylinder 221 with bristles 222 and brush strips 223, and a rubber core 224. The brush cylinder 221 is screwed onto the outer side of the rubber core 224, and the end of the rubber core 224 is movably connected to the mounting base 211 via a bearing assembly 214. Simultaneously, a portion of the end of the rubber core 224 extends outside the housing 11 and is driven by the drive assembly 5. The roller brush 22 can rotate relative to the bracket 21 to clean the surface to be cleaned. When the roller brush assembly 2 is disassembled, the user can easily unscrew the brush cylinder 221 from the rubber core 224 for individual replacement or maintenance. This design avoids the entire roller brush assembly 2 becoming unusable due to wear or damage to the brush cylinder 221, significantly reducing user operating costs. The threaded connection between the brush cylinder 221 and the rubber core 224 allows users to easily disassemble and replace the brush cylinder 221 without replacing the entire roller brush assembly 2, improving the maintenance efficiency and convenience of the cleaning equipment. It is also important to note that the brush cylinder 221 is screwed onto the outer side of the rubber core 224. Both the threads of the rubber core 224 and the brush cylinder 221 are specially designed to ensure that during rotation, the brush cylinder 221 only tightens onto the rubber core 224 and does not loosen. This design guarantees the stability and reliability of the roller brush during use, avoiding poor cleaning results or component damage due to loosening. Furthermore, the individual replacement of the brush cylinder 221 prevents the entire roller brush assembly 2 from being scrapped due to damage to a small part, significantly reducing user operating costs. The bearing assembly 214 is designed to improve the smoothness and stability of the roller brush rotation, reduce friction and wear, thereby improving the cleaning efficiency of the cleaning equipment.

[0054] In this embodiment, the housing 11 has two symmetrically designed receiving cavities, and the included angle between the two receiving cavities is in the range of (0° to 180°), and is preferably 160° in this embodiment; each receiving cavity is equipped with a roller brush assembly 2, and the free ends of the two roller brushes are arranged opposite each other.

[0055] The housing 11 has two symmetrically designed receiving cavities inside, with the corresponding suction port of the housing 11 located between the two cavities. Each cavity houses a roller brush assembly 2, with the free ends of both roller brushes pointing towards the suction port. This design reduces the probability of hair getting tangled on the roller brushes. Because the roller brushes are tilted towards the suction port (maintaining an obtuse angle between the receiving cavities), the negative pressure generated when the suction device is working acts more effectively on the roller brush surface, thereby enhancing the adsorption of dust, hair, and other debris. This design allows the drive assembly 5 to more easily push debris towards the suction port during the rotation of the roller brush, improving cleaning efficiency. When hair on the roller brush surface needs to be sucked into the suction port, because the roller brush is tilted towards the suction port, the hair needs to make an obtuse angle bend. This design, compared to right-angle or acute-angle bends, helps the hair enter the suction port smoothly, reducing hair tangling on the roller brush.

[0056] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A roller brush device, characterized in that, include: A housing having a receiving cavity; A roller brush assembly is detachably mounted on the housing and located within the receiving cavity. The roller brush assembly includes a bracket and a roller brush. One end of the roller brush is rotatably connected to the bracket, and the other end of the roller brush is a free end. In the longitudinal direction of the receiving cavity, the bracket has a first abutting surface facing the receiving cavity, and the receiving cavity has a second abutting surface facing the bracket. A force-applying component is disposed on the housing / receiving cavity, and the force-applying component is used to provide a force to cause the first abutment surface and the second abutment surface to abut against each other.

2. The roller brush device according to claim 1, characterized in that: The bracket includes a mounting base, and the receiving cavity includes a first sub-cavity and a second sub-cavity that communicate with each other. The first sub-cavity is used to fix the mounting base, and the second sub-cavity is used to receive the roller brush.

3. The roller brush device according to claim 2, characterized in that, It also includes a roller brush cover, which is detachably mounted to the housing and together forms the second sub-cavity, and a force application component is mounted to the housing and together forms the first sub-cavity.

4. The roller brush device according to claim 2, characterized in that, The bracket also includes a fixing member that extends from the side wall of the mounting base along the width direction of the receiving cavity. The first abutting surface is located on the side of the fixing member near the receiving cavity, and the second abutting surface is located on the side of the receiving cavity opposite to the first abutting surface.

5. A roller brush device according to claim 4, characterized in that, The first sub-cavity includes a first side and a second side facing away from each other in the width direction. The receiving cavity also includes a third sub-cavity, which is located on the first side of the first sub-cavity and / or the second side of the first sub-cavity. The third sub-cavity is used to install the fixing member.

6. A roller brush device according to claim 5, characterized in that, The housing also includes a fourth mounting slot, which is located on one side of the third sub-cavity and communicates with the third sub-cavity. The fourth mounting slot is used to install the force-applying component.

7. A roller brush device according to claim 6, characterized in that, The fasteners include two members, which are symmetrically arranged on the mounting base. The third sub-cavities include two members, which are symmetrically arranged on the first side and the second side of the first sub-cavity, respectively. The two third sub-cavities correspond to the two fasteners, and the fasteners are housed in the corresponding third sub-cavities. The fourth mounting slots include two members, which are symmetrically arranged along the length of the two third sub-cavities and communicate with them. The force-applying component includes two locking parts, which are fitted onto the fourth mounting slots. The locking parts abut against and fix the fasteners, so that the first abutting surface and the second abutting surface abut against each other.

8. A roller brush device according to claim 7, characterized in that, The force-applying component also includes a limiting seat, wherein the locking parts are symmetrically arranged on both sides of the limiting seat in the width direction; the housing is provided with a first mounting groove, and the limiting seat is provided with a second mounting groove. When the limiting seat is installed on the housing, the first mounting groove and the second mounting groove are positioned correspondingly and together form the first sub-cavity.

9. A roller brush device according to claim 8, characterized in that, The housing is provided with a fixing groove, and the fixing member is at least partially received in the fixing groove. When the limiting seat is installed in the housing, the fixing groove and the side of the limiting seat facing the receiving cavity together form the third sub-cavity.

10. A roller brush device according to claim 9, characterized in that, The roller brush includes a brush cylinder with bristles and a brush strip, and a rubber core. The brush cylinder is screwed onto the outer side of the rubber core, and the end of the rubber core is connected to the mounting base through a bearing assembly. The roller brush can rotate relative to the bracket for cleaning the surface to be cleaned.

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