Cleaning assembly and cleaning robot

Abstract

The invention provides a cleaning assembly and a cleaning robot, the cleaning assembly comprises a supporting device and a cleaning belt, the supporting device comprises a first rolling shaft, a second rolling shaft and a support, and the support comprises a first support and a second support which are connected with each other; the cleaning belt is arranged on the periphery of the supporting device in a winding mode and used for moving relative to the supporting face under driving of the first rolling shaft and the second rolling shaft. The first support and the second support can move relatively so as to be switched between an unfolded state and a folded state, and in the unfolded state, the cleaning belt is tensioned by the first rolling shaft and the second rolling shaft; in the folded state, the cleaning belt is loosened. According to the cleaning assembly provided by the invention, when the cleaning belt is tensioned, the slipping phenomenon is difficult to occur, and the cleaning assembly is stably driven to operate. When the cleaning belt is loosened, an enough gap exists between the cleaning belt and the first rolling shaft or the second rolling shaft, and disassembly and assembly are convenient.

Description

Technical Field

[0001] The present application relates to the field of cleaning, and in particular to a cleaning component and a cleaning robot. Background Art

[0002] In the related art, some cleaning equipment uses a crawler-type cleaning assembly, and the rag is stretched on the roller, which makes it inconvenient to disassemble and install the rag. Summary of the Invention

[0003] In view of this, embodiments of the present application hope to provide a cleaning assembly and a cleaning robot that facilitate the disassembly and assembly of a cleaning belt.

[0004] The present invention provides a cleaning component, comprising:

[0005] The supporting device includes a first roller, a second roller, and a bracket, wherein the bracket includes a first bracket and a second bracket connected to each other; the first roller is rotatably disposed on the first bracket, and the second roller is rotatably disposed on the second bracket;

[0006] a cleaning belt, wound around the outer circumference of the supporting device and in contact with the first roller and the second roller, and configured to move relative to the supporting surface under the drive of the first roller and / or the second roller;

[0007] The first bracket and the second bracket are capable of relative movement to switch between an unfolded state and a folded state. In the unfolded state, the first roller and the second roller tension the cleaning belt; in the folded state, the distance between the first roller and the second roller is smaller than the distance between the two in the unfolded state, so that the cleaning belt is relaxed.

[0008] In some embodiments, the distance between the axis of the first roller and the axis of the second roller is the largest in the unfolded state and the smallest in the folded state.

[0009] In some embodiments, one of the first bracket and the second bracket has at least one stopping protrusion, and the other has at least one positioning recess;

[0010] In the expanded state, the stopping protrusion cooperates with one of the positioning recesses to keep the bracket in the expanded state.

[0011] In some embodiments, the number of the positioning recesses is at least two, and in the folded state, the stop protrusion cooperates with one of the positioning recesses to keep the bracket in the folded state.

[0012] In some embodiments, the number of the stopping protrusions is at least two, and in the folded state, the positioning recess cooperates with one of the stopping protrusions to keep the bracket in the folded state.

[0013] In some embodiments, the first bracket and the second bracket are rotatably connected, and the two rotate relative to each other around a rotation axis; the rotation axis, the axis of the first roller, and the axis of the second roller are parallel to each other.

[0014] In some embodiments, in the unfolded state, the rotation axis, the axis of the first roller, and the axis of the second roller are arranged along a first direction, and the bracket is located between the first roller and the second roller; in the folded state, the rotation axis, the axis of the first roller, and the axis of the second roller are not coplanar.

[0015] In some embodiments, the first bracket has a first connecting portion, the first connecting portion protrudes from one side of the first bracket along the first direction, the second bracket has at least two second connecting portions, the two second connecting portions are arranged at intervals along the axial direction of the second bracket, the first connecting portion is located between the two second connecting portions, and the first connecting portion and the two second connecting portions are rotatably connected.

[0016] In some embodiments, the end of the first connecting portion away from the first roller has an arc-shaped outer edge, and the arc-shaped outer edge is provided with at least two positioning recesses, and each of the positioning recesses is arranged at intervals along the circumference of the arc-shaped outer edge. The end of the second bracket away from the second roller is provided with a stop protrusion, and the stop protrusion slides around the circumferential surface of the arc-shaped outer edge. In the expanded state, the stop protrusion cooperates with one of the positioning recesses to keep the bracket in the expanded state; in the folded state, the stop protrusion cooperates with the other positioning recess to keep the bracket in the folded state.

[0017] In some embodiments, the first bracket and / or the second bracket can undergo elastic deformation during relative movement, so that the stopping protrusion can be engaged with or withdrawn from the positioning recess.

[0018] In some embodiments, the circumferential surface of the first roller and / or the second roller has an annular groove, and the inner surface of the cleaning belt is provided with annular ribs, which extend along the circumferential inner surface of the cleaning belt. In the unfolded state, the annular ribs extend into the annular groove.

[0019] In some embodiments, the first roller, the second roller, and the bracket are arranged along a first direction, the bracket is located between the first roller and the second roller, and the first bracket is slidably connected to the second bracket, and the two move relative to each other along the first direction.

[0020] In the cleaning assembly provided in the embodiments of the present application, when the cleaning belt is tensioned, it forms a belt drive with the first and second rollers, making the cleaning belt less likely to slip and allowing for stable operation. When the cleaning belt is loose, sufficient clearance exists between the cleaning belt and the first or second rollers, allowing for a certain degree of mobility and allowing for easy removal, allowing for replacement, repair, or cleaning operations by the user, and also facilitating installation of the cleaning belt onto the support device.

[0021] The present application also provides a cleaning robot, comprising:

[0022] a main body; and a cleaning assembly as described in any one of the above items, arranged on the main body, the main body further comprising a motor, the motor being connected to the first roller and / or the second roller.

[0023] The cleaning robot provided in the embodiment of the present application has the advantages that the entire process of disassembling and assembling the cleaning belt is convenient and easy to use, which can bring users a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a cleaning robot according to an embodiment of the present application;

[0025] Figure 2 This is a schematic structural diagram of a cleaning assembly in an unfolded state according to one embodiment of the present application;

[0026] Figure 3 This is a schematic structural diagram of a cleaning assembly in a folded state according to one embodiment of the present application;

[0027] Figure 4 for Figure 2 A schematic diagram of the structure of the support device of the middle structure;

[0028] Figure 5 for Figure 2 Schematic cross-section of the structure;

[0029] Figure 6 for Figure 5 A magnified schematic diagram of the structure at A;

[0030] Figure 7 for Figure 3 A schematic diagram of the structure of the support device of the middle structure;

[0031] Figure 8 for Figure 3Schematic cross-section of the structure;

[0032] Figure 9 for Figure 8 A magnified schematic diagram of the structure at B.

[0033] Description of Reference Numerals

[0034] 1000, cleaning robot; 200, main body; 100, cleaning component; 10, supporting device; 11, first roller; 12, second roller; 13, bracket; 131, first bracket; 132, second bracket; 131a, first connecting part; 132a, second connecting part; 131b, positioning recess; 132b, stopping protrusion; 20, cleaning belt; 13a, annular groove; 20a, annular rib; 401, driving wheel; 501, roller brush. DETAILED DESCRIPTION

[0035] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] In the description of the embodiments of the present application, it should be noted that the terms "upper," "lower," "inner," and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the embodiments of the present application and to simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0038] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0040] The present application embodiment provides a cleaning assembly 100, see Figures 3 to 5 The cleaning assembly 100 includes a supporting device 10 and a cleaning belt 20. The supporting device 10 includes a first roller 11, a second roller 12 and a bracket 13, and the bracket includes a first bracket 131 and a second bracket 132 connected to each other.

[0041] The first roller 11 is rotatably disposed on the first bracket 131 , and the second roller 12 is rotatably disposed on the second bracket 132 .

[0042] See also Figure 5 The cleaning belt 20 is wound around the outer periphery of the support device 10 and contacts the first roller 11 and the second roller 12. The cleaning belt 20 is driven by the first roller 11 and the second roller 12 to move relative to the support surface. In other words, the cleaning belt 20 is flexible and wraps around the outer periphery of the support device 10 to form a closed loop. The cleaning belt 20 can be driven to circulate.

[0043] It should be noted that the cleaning assembly 100 is used to clean a support surface (e.g., a floor). When the cleaning assembly 100 contacts the support surface, the cleaning belt 20 moves relative to the support surface to remove stains. During this process, the first roller 11 and the second roller 12 are both parallel to the support surface, and the side of the cleaning belt 20 with a larger area contacts the support surface, thereby significantly improving cleaning efficiency.

[0044] The outer diameters of the first roller 11 and the second roller 12 may be the same, or the outer diameter of the first roller 11 may be larger than the outer diameter of the second roller 12 , or the outer diameter of the second roller 12 may be larger than the outer diameter of the first roller 11 .

[0045] The material of the cleaning belt 20 is not limited, and it can be polyester fabric or cotton fabric with fluff on the surface.

[0046] The present application also provides a cleaning robot 1000, see Figure 1 The cleaning robot 1000 includes a main body 200 and the cleaning assembly 100 described above. The cleaning assembly 100 is disposed on the main body 200. The main body 200 also includes a motor connected to the first roller 11 and / or the second roller 12. That is, the motor drives the first roller 11 and / or the second roller 12 to rotate, causing the cleaning belt 20 to move relative to the supporting surface.

[0047] In this embodiment, one of the first roller 11 and the second roller 12 can be a driving shaft and the other a driven shaft, or both can be driving shafts. It should be noted that the driving shaft is the shaft that rotates under the action of a motor or other power source, thereby driving the cleaning belt 20 to circulate along its closed loop direction to clean the support surface. The driven shaft is the shaft that rotates passively under the action of the cleaning belt 20 or other power source.

[0048] Exemplarily, the cleaning robot includes a control module and a perception module. The perception module is used to collect information about the surrounding environment, including the distribution of obstacles and the terrain locations such as walls and steps, and send the collected information to the control module. The control module receives and processes the information, and can control the cleaning robot to automatically move along the planned route, and start the cleaning component 100 in time to clean the ground along the way.

[0049] For example, see Figure 1 In one embodiment, the main body 200 may further include a driving wheel 401 and a roller brush 501. The driving wheel 401 is used to drive the cleaning robot to move or turn. The axes of at least two driving wheels 401 are in the same straight line. The roller brush 501 is arranged in the area between the two driving wheels 401 to sweep and collect garbage and debris on the travel route of the cleaning robot. The cleaning component 100 is arranged on the rear side of the roller brush 501 along the travel direction to wipe and clean the floor.

[0050] For example, see Figure 5 In one embodiment, the cleaning component 100 is loaded on the cleaning robot 1000. In the unfolded state, the height of the first roller 11 or the second roller 12 is always greater than the height of any part of the bracket 13. In this way, there is a certain gap between the cleaning belt 20 and the bracket 13. Even if the supporting surface has a slightly uneven terrain or there are small obstacles, the cleaning component 100 can still maintain good contact with the supporting surface, thereby improving the adaptability of the cleaning robot 1000 to the environment.

[0051] In the cleaning assembly 100, the first bracket 131 and the second bracket 132 can move relative to each other to switch between an unfolded state and a folded state. In the unfolded state, the first roller 11 and the second roller 12 tension the cleaning belt 20; in the folded state, the distance between the first roller 11 and the second roller 12 is smaller than the distance between the two in the unfolded state, so that the cleaning belt 20 is relaxed.

[0052] It is understood that when the first bracket 131 and the second bracket 132 move relative to each other, the positions of the first roller 11 and the second roller 12 change accordingly. When the cleaning belt 20 is tensioned, it forms a belt drive with the first roller 11 and the second roller 12, making it difficult for the cleaning belt 20 to slip and being stably driven. When the cleaning belt 20 is loose, there is sufficient clearance between the cleaning belt 20 and the first roller 11 or the second roller 12, allowing the cleaning belt 20 to have a certain degree of mobility and be easily removed, allowing the user to replace, repair, or clean the cleaning belt 20. When the cleaning belt 20 needs to be installed on the support device 10, the bracket 13 is folded, the cleaning belt 20 is wound around the support device 10, and then the bracket 13 is switched to the unfolded state. The cleaning belt 20 is tensioned, and the installation of the cleaning belt is completed.

[0053] In some embodiments, the cleaning assembly 100 is applied to the cleaning robot 1000. For example, the cleaning assembly 100 as a whole can be easily engaged with the corresponding interface on the cleaning robot 1000, including in the form of a snap or a chisel. When the user needs to disassemble the cleaning belt 20, first remove the cleaning assembly 100 as a whole from the cleaning robot 1000, then switch the cleaning assembly 100 to a folded state, and remove the original cleaning belt 20. When the user needs to install the cleaning belt 20, the cleaning belt 20 is wound around the support device 10 in the folded state, then the cleaning assembly 100 is switched to an unfolded state, and finally the cleaning assembly 100 is installed back on the cleaning robot as a whole. The whole process is convenient to operate and easy to use, which can bring the user a better user experience.

[0054] For some examples, see Figure 5 and Figure 8 The distance between the axis X of the first roller 11 and the axis Y of the second roller 12 is the largest in the unfolded state and the smallest in the folded state.

[0055] It should be noted that when the distance between the axis X of the first roller 11 and the axis Y of the second roller 12 is the smallest, the roller is in a folded state; and when the distance is the largest, the roller is in an unfolded state.

[0056] Specifically, as the first bracket 131 and the second bracket 132 move relative to each other, the distance between the axis X of the first roller 11 and the axis Y of the second roller 12 changes, switching the support device 10 between an extended and folded state. When the distance is at its maximum, the extended state provides greater tension on the cleaning belt 20 and improves transmission efficiency. When the distance is at its minimum, the folded state maximizes the mobility of the cleaning belt 20, making disassembly easier and more convenient.

[0057] For some examples, see Figure 6 and Figure 9 One of the first bracket 131 and the second bracket 132 has at least one stop protrusion 132b, and the other has at least one positioning recess 131b. The stop protrusion 132b cooperates with the positioning recess 131b to provide a limiting effect, thereby fixing the first bracket 131 and the second bracket 132 relative to each other.

[0058] In the expanded state, the stop protrusion 132b cooperates with a positioning recess 131b to keep the bracket 13 in the expanded state. This helps the cleaning assembly 100 maintain the tension of the cleaning belt 20 and improves the stability of the transmission.

[0059] In some embodiments, there are at least two positioning recesses 131b. When in the folded state, the retaining protrusion 132b cooperates with another positioning recess 131b to maintain the bracket 13 in the folded state. In other embodiments, there are at least two retaining protrusions 132b. When in the folded state, the positioning recess 131b cooperates with another retaining protrusion 132b to also maintain the bracket 13 in the folded state. This makes disassembly more convenient and labor-saving for the user.

[0060] In addition, in this embodiment, when the bracket 13 switches between the unfolded and folded states, the user can experience a shift sensation. Through sensory information such as vibration or sound when the stop protrusion 132b engages the positioning recess 131b, the user can intuitively perceive the current relative position of the first bracket 131 and the second bracket 132. For example, when a crisp "click" sound is heard, the user can determine that the bracket 13 has completed the switch between the two states.

[0061] Exemplarily, the number of the positioning recesses 131b can be three, four or more. In some embodiments, the positioning recesses 131b are arranged at intervals along the path of relative movement between the first bracket 131 and the second bracket 132, so that the bracket 13 has multiple gears during the switching process between the folded state and the unfolded state; in some embodiments, the positioning recesses 131b are arranged axially at intervals, and when the bracket 13 is in the unfolded state, there are multiple groups of mutually cooperating stop protrusions 132b and positioning recesses 131b to enhance the limiting effect of the cooperation between the stop protrusions 132b and the positioning recesses 131b.

[0062] For some examples, see Figure 5 and Figure 8 The first bracket 131 is rotatably connected to the second bracket 132 , and the two rotate relative to each other around the rotation axis Z. The rotation axis Z, the axis X of the first roller 11 , and the axis Y of the second roller 12 are parallel to each other.

[0063] That is, the rotation axis Z, the axis X of the first roller 11, and the axis Y of the second roller 12 form an angle. When the first bracket 131 and the second bracket 132 rotate, the size of the angle changes, and the distance Y between the axis X of the first roller 11 and the axis Y of the second roller 12 also changes accordingly.

[0064] This embodiment achieves a change in the distance between axis X and axis Y by rotating, making it easier for the user to hold the cleaning assembly 100 and switch its bracket state. For example, the axis Z can be used as a fulcrum to apply force to the first bracket 131 or the second bracket 132, thereby utilizing the force-saving effect of the lever to easily rotate the first bracket 131 and the second bracket 132 relative to each other.

[0065] For some examples, see Figure 5 In the unfolded state, the rotation axis Z, the axis X of the first roller 11 and the axis Y of the second roller 12 are arranged along the first direction S, and the bracket is located between the first roller 11 and the second roller 12.

[0066] The above-mentioned arrangement along the first direction S means that the rotation axis Z, the axis X of the first roller 11 and the axis Y of the second roller 12 are roughly in the same plane (processing and assembly errors within the design range are allowed), and the plane is parallel to the support surface, that is, the first direction S is parallel to the support surface and perpendicular to the rotation axis Z.

[0067] In this way, in the unfolded state, although the support device 10 is subjected to the force of the tensioned cleaning belt 20, which is roughly directed toward the inside of the bracket 13 along the first direction S through the first roller 11 and the second roller 12, the component forces along the first direction S counterbalance each other, and the torque applied to the bracket 13 with the rotation axis as the fulcrum is very small or even non-existent, that is, the first bracket 131 and the second bracket 132 are difficult to rotate relative to each other, and the bracket 13 can be stably maintained in the unfolded state.

[0068] It should be explained that in some embodiments, when the cleaning assembly 100 is mounted on the cleaning robot 1000 and contacts a support surface, downward pressure is exerted on the support surface. Because the height of the first roller 11 and the second roller 12 is always greater than the height of any part of the bracket 13, there is a certain gap between the bracket 13 and the support surface. The reaction force of this downward pressure mainly acts on the first roller 11 and the second roller 12, and is ultimately balanced by the force exerted by the main body 200 on the cleaning assembly 100. Therefore, the bracket 13 can be stably maintained in the deployed state.

[0069] In addition, the fact that the axis Z, the axis X, and the axis Y are substantially in the same plane is also beneficial to the circulation of the cleaning belt 20 and reduces the occurrence of problems such as the belt being stuck.

[0070] See also Figure 8 In the folded state, the rolling axis Z, the axis X of the first roller 11, and the axis Y of the second roller 12 are not coplanar. The cleaning tape 20 requires less length to wrap around the support device 10. Therefore, the extra length of the cleaning tape 20 compared to the unfolded state makes the cleaning tape 20 more slack and can be easily removed from one end of the support device 10.

[0071] The implementation of the above-mentioned rotation connection is not limited.

[0072] In some embodiments, the first bracket 131 and the second bracket 132 are connected via a hinge.

[0073] For some examples, see Figure 4 and Figure 7 The first bracket 131 has a first connecting portion 131a, which protrudes from one side of the first bracket 131 along the first direction. The second bracket 132 has at least two second connecting portions 132a, which are arranged at intervals along the axial direction of the second bracket 132. The first connecting portion 131a is located between the two second connecting portions 132a, and the first connecting portion 131a and the two second connecting portions 132a are rotatably connected.

[0074] It should be noted that the axial direction of the second bracket 132 refers to the axis of the clearance space designed for mounting the second roller 12, and is therefore parallel to the axis Y of the second roller 12. Similarly, the axial direction of the first bracket 131 refers to the axis of the clearance space designed for mounting the first roller 11, and is therefore parallel to the axis X of the first roller 11.

[0075] The first bracket 131 is connected to the second connecting portion 132a of the second bracket 132 via the first connecting portion 131a, which reduces the size of the bracket 13 in the first direction S in the expanded state, making the supporting device 10 compact.

[0076] For example, see Figure 4 In one embodiment, the first connecting portion 131a is continuously disposed along the axial direction of the first bracket 131, and its length accounts for at least 70% of the first bracket 131, for example, 70%, 75%, or 80%. Two second connecting portions 132a are disposed at either end of the first connecting portion 131a. This allows for a larger structural dimension of the first connecting portion 131a, enhancing the stability of the rotational connection there. Furthermore, the structure is simple, facilitating assembly, and reducing costs.

[0077] For some examples, see Figure 5 and Figure 8 The first connecting portion 131a has an arc-shaped outer edge at one end away from the first roller 11, and the arc-shaped outer edge is provided with at least two positioning recesses 131b, and each positioning recess 131b is arranged at intervals along the circumference of the arc-shaped outer edge. The second bracket 132 is provided with a stop protrusion 132b at one end away from the second roller 12, and the stop protrusion 132b slides around the circumferential surface of the arc-shaped outer edge.

[0078] The at least two mentioned above include two, three or more. When the stop protrusion 132b cooperates with the positioning recess 131b, the angular position of the first bracket 131 and the second bracket 132 is fixed. Such a fixing method is simple in structure and reliable.

[0079] In the unfolded state, the stop protrusion 132b cooperates with one of the positioning recesses 131b to keep the bracket 13 in the unfolded state; in the folded state, the stop protrusion 132b cooperates with the other positioning recess 131b to keep the bracket 13 in the folded state.

[0080] In this embodiment, the positioning recess 131b is provided on the first connecting portion 131a, and the stopping protrusion 132b is provided on the second connecting portion 132a, which fully utilizes the spatial structure of the bracket 13 and makes the overall structure of the bracket 13 more compact.

[0081] It should be noted that in one embodiment, the first bracket 131 is a one-piece structure, for example, the first bracket 131 is formed by integral injection molding, wherein the integral injection molding can be single-color injection molding or two-color injection molding (injecting two different materials into a mold); the second bracket 132 is a one-piece structure, for example, the second bracket 132 is formed by integral injection molding, wherein the integral injection molding can be single-color injection molding or two-color injection molding. In another embodiment, the first bracket 131 is a one-piece structure, and the second bracket 132 is a split structure, for example, the retaining protrusion 132b is fixed to the second bracket 132 by means of threaded connection, adhesive connection, etc.

[0082] For example, see Figure 2 and Figure 5In one embodiment, at least two positioning recesses 131b form a group, and the positioning recesses 131b in the same group have the same axial position along the first bracket 131. There are two groups of positioning recesses 131b symmetrically distributed along the axial direction of the first bracket 131. In this way, when the stop protrusion 132b cooperates with the positioning recess 131b, the relative angular position of the first bracket 131 and the second bracket 132 is more stable.

[0083] There are other embodiments for the relative movement between the first bracket 131 and the second bracket 132 .

[0084] In some embodiments, the first roller 11 , the second roller 12 and the bracket are arranged along the first direction S, the bracket 13 is located between the first roller 11 and the second roller 12 , and the first bracket 131 and the second bracket 132 are slidably connected and move relative to each other along the first direction S.

[0085] That is, when the first bracket 131 and the second bracket 132 slide relative to each other in the first direction S, the distance between the first roller 11 and the second roller 12 changes, thereby tightening or loosening the cleaning belt 20. This relative sliding motion is relatively simple to implement, and when the bracket 13 is in the folded state, the cleaning belt 20 has a large margin of movement, making it easy to disassemble.

[0086] For example, in one embodiment, the first bracket 131 has at least two positioning recesses 131b arranged along a first direction S. The second bracket 132 has a stop protrusion 132b that slides along the surface of the first bracket 131 along the first direction. When the stop protrusion 132b engages with the positioning recesses 131b, the relative position of the first roller 11 and the second roller 12 is fixed. Specifically, when the stop protrusion 132b engages with one of the positioning recesses 131b, the bracket 13 is in an unfolded state; when the stop protrusion 132b engages with the other positioning recess 131b, the bracket 13 is in a folded state.

[0087] In some embodiments, the first bracket 131 and / or the second bracket 132 can be elastically deformed during the relative movement, so that the stopping protrusion 132b can be inserted into or removed from the positioning recess 131b.

[0088] The elastic deformation of the first bracket 131 may be a bending deformation of the first bracket 131 as a whole along a direction substantially perpendicular to its own axial direction that can be restored to its original shape.

[0089] The second bracket 132 undergoes elastic deformation, which can be a bending deformation of the second bracket 132 as a whole in a direction basically perpendicular to its own axial direction that can be restored to its original shape, or a local elastic deformation occurs at the position corresponding to the positioning recess 131b on the second bracket 132. For example, the stop protrusion 132b is made of elastic material and has a certain elasticity. When it contacts the arc-shaped outer edge, it can undergo compression deformation.

[0090] Obviously, both the first bracket 131 and the second bracket 132 can undergo elastic deformation.

[0091] In this embodiment, the elastic deformation property allows the user to switch the bracket 13 between the unfolded state and the folded state with less effort. In addition, the extrusion deformation of the stop protrusion 132b or the positioning recess 131b can be reduced, thereby extending their service life.

[0092] For some examples, see Figure 4 and Figure 5 The circumferential surface of the first roller 11 and / or the second roller 12 has an annular groove 13a, and the inner surface of the cleaning belt 20 is provided with an annular rib 20a, which extends along the circumferential inner surface of the cleaning belt 20. In the unfolded state, the annular rib 20a extends into the annular groove 13a.

[0093] It should be noted that the annular groove 13a is a groove-like structure that completely surrounds the first roller 11 or the second roller 12, and the diameter of the groove is smaller than the diameter of the structures on either side. The circumferential surfaces of the first roller 11 and the second roller 12 can both have annular grooves 13a, or only one of them can have annular grooves 13a.

[0094] In the unfolded state, the annular rib 20 a cooperates with the annular groove 13 a to fix the cleaning belt 20 in the axial direction X of the first roller 11 or the axial direction Y of the second roller 12 , making it difficult to fall off from the supporting device 10 .

[0095] Specifically, the annular groove 13a is provided at the middle portion of the first roller 11 or the second roller 12 along its own axial direction. In this way, the forces on both sides of the cleaning belt 20 are relatively symmetrical, and it is difficult for the edge to warp.

[0096] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0097] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A cleaning component, characterized in that: include: The supporting device includes a first roller, a second roller, and a bracket, wherein the bracket includes a first bracket and a second bracket connected to each other; the first roller is rotatably disposed on the first bracket, and the second roller is rotatably disposed on the second bracket; a cleaning belt, wound around the outer circumference of the supporting device and in contact with the first roller and the second roller, and configured to move relative to the supporting surface under the drive of the first roller and / or the second roller; wherein the first bracket and the second bracket are capable of relative movement to switch between an unfolded state and a folded state, and in the unfolded state, the first roller and the second roller tension the cleaning belt; In the folded state, the distance between the first roller and the second roller is smaller than the distance between the first roller and the second roller in the unfolded state, so that the cleaning belt is relaxed.

2. The cleaning assembly according to claim 1, wherein: The distance between the axis of the first roller and the axis of the second roller is the largest in the unfolded state, and the distance between them is the smallest in the folded state.

3. The cleaning assembly according to claim 1, wherein: One of the first bracket and the second bracket has at least one stopping protrusion, and the other has at least one positioning recess; In the expanded state, the stopping protrusion cooperates with one of the positioning recesses to keep the bracket in the expanded state.

4. The cleaning assembly according to claim 3, characterized in that The number of the positioning recesses is at least two, and in the folded state, the stop protrusion cooperates with one of the positioning recesses to keep the bracket in the folded state.

5. The cleaning assembly according to claim 3, characterized in that The number of the stopping protrusions is at least two. In the folded state, the positioning recess cooperates with one of the stopping protrusions to keep the bracket in the folded state.

6. The cleaning assembly according to claim 1, wherein: The first bracket is rotatably connected to the second bracket, and the two rotate relative to each other around a rotation axis; the rotation axis, the axis of the first roller, and the axis of the second roller are parallel to each other.

7. The cleaning assembly according to claim 6, wherein: In the unfolded state, the rotation axis, the axis of the first roller and the axis of the second roller are arranged along a first direction, and the bracket is located between the first roller and the second roller; in the folded state, the rotation axis, the axis of the first roller and the axis of the second roller are not coplanar.

8. The cleaning assembly according to claim 6, wherein: The first bracket has a first connecting portion, which protrudes from one side of the first bracket along the first direction. The second bracket has at least two second connecting portions, which are arranged at intervals along the axial direction of the second bracket. The first connecting portion is located between the two second connecting portions, and the first connecting portion and the two second connecting portions are rotatably connected.

9. The cleaning assembly according to claim 8, characterized in that The end of the first connecting portion away from the first roller has an arc-shaped outer edge, and the arc-shaped outer edge is provided with at least two positioning recesses, and the positioning recesses are arranged at intervals along the circumference of the arc-shaped outer edge. The end of the second bracket away from the second roller is provided with a stop protrusion, and the stop protrusion slides around the circumferential surface of the arc-shaped outer edge. In the expanded state, the stop protrusion cooperates with one of the positioning recesses to maintain the bracket in the expanded state. In the folded state, the stopping protrusion cooperates with the other positioning recess to keep the bracket in the folded state.

10. The cleaning assembly according to claim 9, characterized in that The first bracket and / or the second bracket can be elastically deformed during the relative movement, so that the stopping protrusion can be inserted into or withdrawn from the positioning recess.

11. The cleaning assembly according to claim 1, wherein The circumferential surface of the first roller and / or the second roller has an annular groove, and the inner surface of the cleaning belt is provided with annular ribs, which extend along the circumferential inner surface of the cleaning belt. In the unfolded state, the annular ribs extend into the annular groove.

12. The cleaning assembly according to any one of claims 1 to 5, characterized in that: The first roller, the second roller and the bracket are arranged along a first direction, the bracket is located between the first roller and the second roller, the first bracket is slidably connected to the second bracket, and the two move relatively along the first direction.

13. A cleaning robot, characterized in that: include: Main fuselage; And the cleaning component according to any one of claims 1 to 12 is arranged on the main body, and the main body also includes a motor, and the motor is connected to the first roller and / or the second roller.

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