Cleaning assembly and cleaning robot

Abstract

The utility model 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 devices use a crawler-type cleaning assembly, in which the rag is tensioned on a roller, and it is inconvenient to disassemble and assemble the rag. Utility Model Content

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

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

[0005] The supporting device comprises a first roller, a second roller and a bracket, wherein the bracket comprises a first bracket and a second bracket connected to each other; the first roller is rotatably arranged on the first bracket, and the second roller is rotatably arranged 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 used 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 as to relax the cleaning belt.

[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 distance between them is the smallest in the folded state.

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

[0010] In the expanded state, the stop 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 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.

[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 the relative movement, so that the stop protrusion can be inserted into 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, the first bracket is slidably connected to the second bracket, and the two move relatively along the first direction.

[0020] In the cleaning assembly provided in the embodiment of the present application, when the cleaning belt is tensioned, a belt transmission is formed with the first roller and the second roller, and the cleaning belt is unlikely to slip and is stably driven to operate. When the cleaning belt is loose, there is a sufficient gap between the cleaning belt and the first roller or the second roller, so that the cleaning belt has a certain margin of activity and can be easily disassembled, so that the user can replace, repair or clean the cleaning belt, and it is also convenient to install the cleaning belt on the support device.

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

[0022] A main body; and a cleaning component as described in any one of the above items, which 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.

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

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

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

[0026] Figure 3 This is a schematic diagram of the structure of a cleaning component in a folded state according to an embodiment of the present application;

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

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

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

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

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

[0032] Fig. 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 is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0036] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0038] In the embodiments of the present application, unless otherwise clearly specified and 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 the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, 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, the description with reference to the terms "an 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 embodiment of the present application. In this specification, the schematic representation of the above terms does 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 supporting device 10 and contacts the first roller 11 and the second roller 12, and is used to move relative to the supporting surface under the drive of the first roller 11 and the second roller 12. In other words, the cleaning belt 20 is flexible, surrounds the outer periphery of the supporting device 10, and is enclosed in a closed loop, and 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 (such as a floor). When the cleaning assembly 100 contacts the support surface, the cleaning belt 20 moves relative to the support surface to remove stains. In this process, the first roller 11 and the second roller 12 are parallel to the support surface, and the side of the cleaning belt 20 with a larger area contacts the support surface, thereby significantly improving the cleaning efficiency.

[0044] The outer diameters of the first roller 11 and the second roller 12 are not limited to each other. They 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 above-mentioned cleaning assembly 100, the cleaning assembly 100 is arranged on the main body 200, and the main body 200 also includes a motor, which is 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, so that the cleaning belt 20 moves relative to the supporting surface.

[0047] In this embodiment, one of the first roller 11 and the second roller 12 may be a driving shaft and the other may be a driven shaft, or both may be driving shafts. It should be noted that the driving shaft refers to a 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 refers to a shaft that rotates passively under the drive of the cleaning belt 20.

[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 location of terrain 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 on 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, and is used 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, and is used 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 is slightly uneven 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 understandable 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, a belt transmission is formed with the first roller 11 and the second roller 12, and the cleaning belt 20 is unlikely to slip and is stably driven to operate. When the cleaning belt 20 is loose, there is a sufficient gap between the cleaning belt 20 and the first roller 11 or the second roller 12, so that the cleaning belt 20 has a certain margin of activity and can be easily disassembled, so that the user can replace, repair or clean the cleaning belt 20. When the cleaning belt 20 needs to be installed on the supporting device 10, the bracket 13 is in a folded state, the cleaning belt 20 is wound on the supporting 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 snap-fit ​​or interlocking. When the user needs to disassemble the cleaning belt 20, first disassemble the cleaning assembly 100 as a whole from the cleaning robot 1000, then switch the cleaning assembly 100 to a folded state, and disassemble 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 a 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 users 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] That is, 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, and the support device 10 switches between the unfolded state and the folded state. When the distance is the largest, it is in the unfolded state, at which time the cleaning belt 20 has a large tension and high transmission efficiency; when the distance is the smallest, it is in the folded state, at which time the cleaning belt 20 has a maximum margin of movement and is easier to disassemble.

[0057] For some examples, see Figure 6 and Fig. 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 has a limiting effect when matched with the positioning recess 131b, so that the first bracket 131 and the second bracket 132 are relatively fixed.

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

[0059] In some embodiments, the number of the positioning recesses 131b is at least two, and in the folded state, the stop protrusion 132b cooperates with another positioning recess 131b to keep the bracket 13 in the folded state. In other embodiments, the number of the stop protrusion 132b is at least two, and in the folded state, the positioning recess 131b cooperates with another stop protrusion 132b to also keep the bracket 13 in the folded state. In this way, it is more convenient and labor-saving for users to disassemble.

[0060] In addition, in this embodiment, when the bracket 13 switches between the unfolded state and the folded state, the user can experience the gear position sense, and through the vibration or sound and other sensory information when the stop protrusion 132b cooperates with 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 judge 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 relatively 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 the change of the distance between the axis X and the axis Y by rotating, which is convenient for the user to hold the cleaning assembly 100 and switch its bracket state. For example, the axis Z can be rotated as a fulcrum to exert force on the first bracket 131 or the second bracket 132, and the first bracket 131 and the second bracket 132 can be easily rotated relative to each other by using the force-saving effect of the lever.

[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 supporting surface, that is, the first direction S is parallel to the supporting surface and perpendicular to the rotation axis Z.

[0067] Thus, in the unfolded state, although the supporting 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 components of force along the first direction S counterbalance each other, and the torque on the bracket 13 with the axis of rotation 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 component 100 is loaded on the cleaning robot 1000 and contacts the support surface, downward pressure is generated on the support surface. Since the height of the first roller 11 and the second roller 12 is always greater than the height of any part of the bracket, there is a certain gap between the bracket 13 and the support surface. The reaction force of the downward pressure mainly acts on the first roller 11 and the second roller 12, and finally balances with the force applied by the main body 200 to the cleaning component 100. Therefore, the bracket 13 can be stably maintained in the unfolded state.

[0069] In addition, the fact that the axis Z, the axis X, and the axis Y are roughly in the same plane is also beneficial to the circulation of the cleaning belt 20 and reduces the occurrence of tape jams.

[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 length of the cleaning tape 20 required to wrap around the support device 10 is shorter. Therefore, compared with the extra length of the cleaning tape 20 in the unfolded state, the cleaning tape 20 is relatively loose and can be easily taken out from one end of the support device 10.

[0071] The implementation method 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 is rotatably connected to the two second connecting portions 132a.

[0074] It should be noted that the axial direction of the second bracket 132 refers to the axis of the avoidance space designed by the second bracket 132 for mounting the second roller 12, that is, parallel to the axis Y direction of the second roller 12. Similarly, the axial direction of the first bracket 131 refers to the axis of the avoidance space designed by the first bracket 131 for mounting the first roller 11, that is, parallel to the axis X direction 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, so as to reduce the size of the bracket 13 in the first direction S in the unfolded state, thereby making the supporting device 10 compact.

[0076] For example, see Figure 4 In one embodiment, the first connection portion 131a is continuously arranged along the axial direction of the first bracket 131, and its length accounts for more than 70% of the first bracket 131, for example, 70%, 75% or 80%. The two second connection portions 132a are arranged at both ends of the first connection portion 131a. In this way, the structural size of the first connection portion 131a is larger, which enhances the stability of the rotation connection there, and the structure is simple, easy to assemble and reduces the cost.

[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 and 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 has a simple structure and is 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 disposed on the first connecting portion 131a, and the stopping protrusion 132b is disposed on the second connecting portion 132a, so as to fully utilize the spatial structure of the bracket 13 and make the overall structure of the bracket 13 more compact.

[0081] It should be noted that, in one embodiment, the first bracket 131 is an integrated 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 double-color injection molding (injecting two different materials into a mold); the second bracket 132 is an integrated 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 double-color injection molding. In another embodiment, the first bracket 131 is an integrated structure, and the second bracket 132 is a split structure, for example, the stop 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, and 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 , the first bracket 131 is slidably connected to the second bracket 132 , and the two move relatively 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, so that the cleaning belt 20 is tightened or loosened. The relative sliding movement is relatively simple to implement. When the bracket 13 is in the folded state, the cleaning belt 20 has a large activity margin and is easy to disassemble.

[0086] Exemplarily, in one embodiment, the first bracket 131 has at least two positioning recesses 131b, and the positioning recesses 131b are arranged along the first direction S; the second bracket 132 has a stop protrusion 132b, and the stop protrusion 132b slides along the first direction with the surface of the first bracket 131, and when the stop protrusion 132b cooperates with the positioning recess 131b, the relative position of the first roller 11 and the second roller 12 is fixed. Specifically, when the stop protrusion 132b cooperates with one of the positioning recesses 131b, the bracket 13 is in an unfolded state, and when the stop protrusion 132b cooperates 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 stop protrusion 132b can be inserted into or withdrawn from the positioning recess 131b.

[0088] The first bracket 131 undergoes elastic deformation, which 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 may 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 may occur at a position on the second bracket 132 corresponding to the positioning recess 131b. For example, the stop protrusion 132b is made of an elastic material and has a certain elasticity. When it contacts the arc-shaped outer edge, it can be compressed and deformed.

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

[0091] In this embodiment, the elastic deformation property makes it easier for the user to switch the bracket 13 between the unfolded state and the folded state. 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 both sides thereof. The circumferential surfaces of the first roller 11 and the second roller 12 may both have annular grooves 13a, or only one of them may 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 13 a is disposed at the middle portion of the first roller 11 or the second roller 12 along its own axial direction, so that 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 above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cleaning component, characterized in that: include: The supporting device comprises a first roller, a second roller and a bracket, wherein the bracket comprises a first bracket and a second bracket connected to each other; the first roller is rotatably arranged on the first bracket, and the second roller is rotatably arranged 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 used 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 can move relative to each other 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; One of the first bracket and the second bracket has at least one stop protrusion, and the other has at least one positioning recess; in the unfolded state, the stop protrusion cooperates with one of the positioning recesses to keep the bracket in the unfolded state.

2. The cleaning assembly according to claim 1, characterized in that: 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.

3. The cleaning assembly according to claim 1, 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.

4. The cleaning assembly according to claim 1, characterized in that: 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.

5. The cleaning assembly according to claim 1, characterized in that: The first bracket is rotatably connected to the second bracket, and the two rotate relatively 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.

6. The cleaning assembly according to claim 5, characterized in that: 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.

7. The cleaning assembly according to claim 5, characterized in that: 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.

8. The cleaning assembly according to claim 7, characterized in that: One 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, each of which is arranged at intervals along the circumference of the arc-shaped outer edge; one end of the second bracket away from the second roller is provided with a stop protrusion, the stop protrusion slides around the circumferential surface of the arc-shaped outer edge, and 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 another of the positioning recesses to keep the bracket in the folded state.

9. The cleaning assembly according to claim 8, characterized in that: The first bracket and / or the second bracket can undergo elastic deformation during the relative movement, so that the stop protrusion can be inserted into or withdrawn from the positioning recess.

10. The cleaning assembly according to claim 1, characterized in that 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.

11. The cleaning assembly according to any one of claims 1 to 4, 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.

12. A cleaning robot, characterized in that: include: Main body; And the cleaning component according to any one of claims 1 to 11 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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