Rolling brush and cleaning device

Abstract

The utility model discloses a kind of rolling brush and cleaning device, and rolling brush includes roller, transmission mechanism, cutting part and elastic sealing element. Formed with accommodating cavity in roller, and form with roller on roller Avoidance groove;Transmission mechanism is set in accommodating cavity;Cutting part is connected in transmission mechanism, cutting part is placed in avoidance groove, and the axis of cutting part away from roller one end is formed as cutting end, and at least part of cutting end is stretched to the radial outer side of roller, transmission mechanism is used to drive cutting part reciprocating motion, to make cutting end reciprocating motion along preset path;Elastic sealing element is used to shield avoidance groove, and cutting part is placed in elastic sealing element;In the process of cutting part movement, part of elastic sealing element is in contact with cutting part and is in deformed state, to avoid the movement of cutting part, part of elastic sealing element not in contact with cutting part is in shielding state, to shield avoidance groove. The rolling brush of the utility model can prevent foreign matter from entering the inside of roller through avoidance groove.

Description

Technical Field

[0001] This utility model relates to the field of cleaning device technology, and in particular to a roller brush and cleaning device. Background Technology

[0002] Typically, cleaning devices achieve their cleaning function by contacting the ground through the rolling of their brushes.

[0003] In related technologies, a roller brush includes a roller, a transmission mechanism, and a cutting component. The transmission mechanism is located inside the roller brush, and the cutting component is connected to the transmission mechanism. A clearance groove is provided on the roller, and the cutting end of the cutting component passes through the clearance groove. The transmission mechanism is used to drive the cutting component to reciprocate so that the cutting end can cut foreign objects such as hair wrapped around the roller.

[0004] Because the clearance groove is connected to the inside of the roller, external dust and other foreign objects can easily enter the inside of the roller through the clearance groove, thereby affecting the operation of the transmission mechanism inside the roller. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a roller brush and cleaning device that can prevent foreign objects from entering the interior of the roller through the clearance groove.

[0006] In a first aspect, this utility model embodiment provides a roller brush, the roller brush comprising:

[0007] A roller, with a receiving cavity formed inside the roller and a clearance groove formed on the roller;

[0008] The transmission mechanism is located within the accommodating cavity;

[0009] The cutting element is connected to the transmission mechanism and passes through the clearance groove. The end of the cutting element away from the axis of the drum is formed as the cutting end, and at least a portion of the cutting end extends to the radial outside of the drum. The transmission mechanism is used to drive the cutting element to reciprocate so that the cutting end reciprocates along a preset path.

[0010] A resilient seal is used to shield the clearance groove, and the cut-out part passes through the resilient seal; wherein...

[0011] During the movement of the cutting component, a portion of the elastic seal contacts the cutting component and is in a deformed state to avoid the movement of the cutting component, while the portion of the elastic seal that does not contact the cutting component is in a shielded state to shield the clearance groove.

[0012] The roller brush according to the embodiments of this utility model has at least the following technical effects:

[0013] By incorporating an elastic seal and shielding the clearance groove on the roller, a barrier is formed between the inner cavity of the roller and the outer space, preventing foreign objects from entering the cavity through the clearance groove. Furthermore, by placing the cutting element through the elastic seal, its elastic deformation capability ensures that a portion of the seal remains in contact with the cutting element during its movement. This reduces the gap between the seal and the cutting element, further preventing foreign objects from easily entering the cavity through this gap. The portion of the elastic seal not in contact with the cutting element is shielded, thus both shielding the clearance groove and preventing the movement of the cutting element. Therefore, the roller brush of this embodiment effectively prevents foreign objects from entering the cavity, ensuring the stable operation of all mechanisms and components within the cavity.

[0014] According to some embodiments of the present invention, the elastic seal includes a first sealing portion and a second sealing portion;

[0015] A portion of the first sealing part and a portion of the second sealing part together clamp the cutting element and are in a deformed state to avoid the cutting element from penetrating the clearance groove; a portion of the first sealing part that does not contact the cutting element and a portion of the second sealing part that does not contact the cutting element abut against each other and are in a shielding state to shield the clearance groove.

[0016] According to some embodiments of the present invention, the elastic seal is located on the radial inner side of the roller, and the cutting piece passes through the elastic seal and the clearance groove in sequence and extends to the radial outer side of the roller.

[0017] Alternatively, the resilient seal is located on the radially outer side of the roller, and the cutting element extends to the radially outer side of the roller after passing through the clearance groove and the resilient seal in sequence.

[0018] According to some embodiments of the present invention, the roller includes a first cylindrical portion and a second cylindrical portion, which are detachably connected and together define an accommodating cavity when connected.

[0019] When the first cylindrical section and the second cylindrical section are connected, they together define a clearance groove, or the clearance groove is formed in the first cylindrical section or the second cylindrical section.

[0020] According to some embodiments of the present invention, the cutting component includes a cutting tool and a pushing structure. The cutting tool has a cutting end. In the thickness direction of the cutting tool, the size of the pushing structure is larger than the size of the cutting tool. The pushing structure is used to push the elastic seal so that a portion of the elastic seal is in a deformed state and avoids the movement of the cutting component.

[0021] According to some embodiments of the present invention, the pushing structure includes a first pushing end and a second pushing end, the first pushing end and the second pushing end extending away from each other along the axial direction of the roller; the width of the first pushing end gradually decreases along the direction from the second pushing end to the first pushing end; the width of the second pushing end gradually decreases along the direction away from the first pushing end.

[0022] According to some embodiments of the present invention, the cutting end has a first cutting edge and a second cutting edge, the first cutting edge and the second cutting edge are respectively located on both sides of the cutting end along the axial direction of the roller, and the first included angle between the first cutting edge and the axis of the roller is less than or equal to the second included angle between the second cutting edge and the axis of the roller.

[0023] According to some embodiments of the present invention, the cutting component includes a cutting tool, which passes through a relief groove and has a cutting end; the cutting tool is guided and engaged with the relief groove, and the extension path of the relief groove is configured as a preset path;

[0024] And / or, the resilient seal includes a first sealing portion and a second sealing portion; a portion of the first sealing portion and a portion of the second sealing portion together clamp the cutting element and are in a deformed state to avoid the cutting element from penetrating the clearance groove; a portion of the first sealing portion that does not contact the cutting element and a portion of the second sealing portion that does not contact the cutting element abut against each other and are in a shielding state to shield the clearance groove; the abutting fit between the first sealing portion and the second sealing portion defines a preset path;

[0025] And / or, the roller is provided with a first guide structure, and the cutting element is provided with a second guide structure. The first guide structure and the second guide structure are guided and cooperated to guide the cutting end to move along a preset path.

[0026] And / or, the elastic seal is located on the radial inner side of the roller, the elastic seal is provided with a third guide structure, the cutting element is provided with a fourth guide structure, the third guide structure and the fourth guide structure are guided and cooperated, and are used to guide the cutting end to move along a preset path;

[0027] The preset path extends along the axial direction of the roller, or the preset path extends along a curve.

[0028] According to some embodiments of the present invention, a protective structure is provided on the radial outer side of the roller. The protective structure includes multiple protective units, which are spaced apart along the axial direction of the roller, and a gap space is defined between two adjacent protective units. Along the radial direction of the roller, a clearance space is defined between each protective unit and the clearance groove. The gap space, the clearance space, and the clearance groove are connected. The cutting end passes through the gap space and the clearance space. Along the radial direction of the roller, the cutting end is located on the inner side of the protective structure.

[0029] According to some embodiments of the present invention, at least two clearance grooves are formed on the roller, and the at least two clearance grooves are spaced apart along the circumference of the roller. The cutting component includes at least two cutters, which are distributed along the circumference of the roller. Each cutter has a cutting end, and the cutting ends of the at least two cutters correspond one-to-one with the at least two clearance grooves and are respectively inserted into the corresponding clearance groove.

[0030] And / or, the cutting element includes at least two cutters, the at least two cutters are distributed along the axial direction of the roller, each cutter is formed with a cutting end, and the cutting ends of the at least two cutters are inserted into the clearance groove;

[0031] And / or, the number of cutting elements is one, or the number of cutting elements is at least two, with at least two cutting elements distributed along the axial direction of the roller and connected to the transmission mechanism respectively.

[0032] According to some embodiments of the present invention, the transmission mechanism includes a lead screw, and the cutting component is threadedly connected to the lead screw;

[0033] A lubricating medium is provided between the cutting workpiece and the lead screw, or a lubricating medium is provided between the roller and the lead screw;

[0034] And / or, the lead screw is a ball screw, and the cutting part is equipped with a ball nut, the ball screw and the ball nut are engaged by balls.

[0035] Secondly, this utility model embodiment also provides a cleaning device, which includes a movable carrier and the aforementioned roller brush, with the roller brush connected to the movable carrier.

[0036] The cleaning device of this utility model embodiment has the beneficial effects of a roller brush, which will not be described in detail here.

[0037] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0039] Figure 1 This is a three-dimensional view of the structure of a roller brush provided in one embodiment of the present invention;

[0040] Figure 2 This is an exploded view of the structure of a roller brush provided in one embodiment of the present invention;

[0041] Figure 3 A perspective sectional view of a roller brush along its radial direction, provided in one embodiment of the present invention;

[0042] Figure 4A planar cross-sectional view along the axial direction of a roller brush provided in one embodiment of the present invention;

[0043] Figure 5 A perspective view of the cutting component of a roller brush provided in one embodiment of this utility model;

[0044] Figure 6 A front view of the cutting tool of a roller brush cutting component provided in one embodiment of this utility model;

[0045] Figure 7 A planar cross-sectional view along the radial direction of a roller brush provided in one embodiment of the present invention;

[0046] Figure 8 A planar cross-sectional view along the radial direction of a roller brush provided in another embodiment of the present invention;

[0047] Figure 9 This is a planar cross-sectional view along the axial direction of a roller brush provided in another embodiment of the present invention.

[0048] Figure label:

[0049] 100 roller brushes;

[0050] Roller 10; Receiving cavity 101; Clearance groove 102; Spacing space 103; Clearance space 104; First abutment surface 1021; Second abutment surface 1022; First cylindrical section 11; Second cylindrical section 12; First guide structure 13; Third abutment surface 131; Fourth abutment surface 132; Protective structure 14; Protective unit 141;

[0051] Transmission mechanism 20;

[0052] Cutting component 30; cutting tool 31; cutting end 311; first cutting edge 3111; second cutting edge 3112; pushing structure 32; first pushing end 321; second pushing end 322; connecting component 33; second guide structure 34; fifth abutment surface 341; sixth abutment surface 342; fourth guide structure 35; ninth abutment surface 351; tenth abutment surface 352;

[0053] Elastic seal 40; first sealing part 41; first end face 411; second sealing part 42; second end face 412; third guide structure 43; seventh abutment surface 431; eighth abutment surface 432. Detailed Implementation

[0054] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0055] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0057] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0058] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Please see Figure 1 This utility model embodiment provides a roller brush 100, which is applied to a cleaning device to realize the cleaning function of the cleaning device.

[0060] The cleaning device can be a self-moving cleaning robot, or a vacuum cleaner or floor scrubber used manually by the user.

[0061] Please see Figure 2The roller brush 100 includes a roller 10, a transmission mechanism 20, a cutting element 30, and an elastic seal 40.

[0062] Please see Figure 3 and Figure 4 A receiving cavity 101 is formed inside the roller 10, and a relief groove 102 is formed on the roller 10.

[0063] The cutting element 30 is connected to the transmission mechanism 20 and passes through the clearance groove 102. The end of the cutting element 30 away from the axis OO1 of the roller 10 forms a cutting end 311, and at least a portion of the cutting end 311 extends radially outward from the roller 10. The transmission mechanism 20 drives the cutting element 30 to reciprocate, causing the cutting end 311 to reciprocate along a preset path. During the movement of the cutting element 30, the clearance groove 102 avoids the movement of the cutting element 30, while the cutting end 311 cuts foreign objects such as hair wrapped around the roller 10 along the preset path. It should be noted that the radial outward of the roller 10 refers to the outer side of the roller 10 in the radial direction away from the axis OO1 of the roller 10.

[0064] The elastic seal 40 is used to shield the clearance groove 102, and the cutter 30 passes through the elastic seal 40.

[0065] During the movement of the cutting element 30, a portion of the elastic seal 40 contacts the cutting element 30 and is in a deformed state to avoid the movement of the cutting element 30, while the portion of the elastic seal 40 that does not contact the cutting element 30 is in a shielded state to shield the clearance groove 102.

[0066] In this embodiment of the invention, by providing an elastic sealing element 40 and shielding the clearance groove 102 on the roller 10, a barrier is formed between the receiving cavity 101 inside the roller 10 and the space outside the roller 10, preventing foreign objects from entering the receiving cavity 101 through the clearance groove 102. Furthermore, by placing the cutting element 30 through the elastic sealing element 40, the elastic deformation capability of the elastic sealing element 40 ensures that a portion of the elastic sealing element 40 is always in contact with the cutting element 30 during its movement. This reduces the gap between the elastic sealing element 40 and the cutting element 30, preventing foreign objects from easily entering the receiving cavity 101 through the gap. The portion of the elastic sealing element 40 that is not in contact with the cutting element 30 is shielded, thus shielding the clearance groove 102 while also preventing the movement of the cutting element 30. Therefore, the roller brush 100 of this utility model embodiment can effectively prevent foreign objects from entering the accommodating cavity 101, which is conducive to ensuring the stable operation of various mechanisms and components in the accommodating cavity 101.

[0067] Please see Figure 3In some embodiments, the resilient seal 40 includes a first sealing portion 41 and a second sealing portion 42, which are respectively connected to the roller 10. A portion of the first sealing portion 41 and a portion of the second sealing portion 42 together clamp the cutting member 30 and are in a deformed state to prevent the cutting member 30 from penetrating the relief groove 102, thereby preventing the movement of the cutting member 30. A portion of the first sealing portion 41 that is not in contact with the cutting member 30 and a portion of the second sealing portion 42 that is not in contact with the cutting member 30 abut against each other and are in a shielding state to shield the relief groove 102.

[0068] In this embodiment, by setting the elastic sealing element 40 as a first sealing part 41 and a second sealing part 42, a portion of the first sealing part 41 and a portion of the second sealing part 42 abut against the opposite sides of the cutting element 30, while a portion of the first sealing part 41 that does not contact the cutting element 30 and a portion of the second sealing part 42 that does not contact the cutting element 30 abut against each other. In this way, the elastic sealing element 40 can be substantially surrounded by the cutting element 30, reducing the gap between the elastic sealing element 40 and the cutting element 30, so that the elastic sealing element 40 and the cutting element 30 have a better sealing effect, and the first sealing part 41 and the second sealing part 42 can work together to effectively shield the relief groove 102, which helps to prevent foreign objects from easily entering the receiving cavity 101 through the gap between the elastic sealing element 40 and the cutting element 30, or the gap between the first sealing part 41 and the second sealing part 42.

[0069] In some embodiments, a portion of the first sealing portion 41 that does not contact the cutting member 30 and a portion of the second sealing portion 42 that does not contact the cutting member 30 can abut against each other along the circumference of the roller 10. Specifically, the end of the first sealing portion 41 adjacent to the second sealing portion 42 has a first end face 411, and the end of the second sealing portion 42 adjacent to the first sealing portion 41 has a second end face 421. The first end face 411 and the second end face 421 face each other and abut against each other along the circumference of the roller 10. Figure 2 As shown.

[0070] In other embodiments, a portion of the first sealing portion 41 that does not contact the cutting element 30 and a portion of the second sealing portion 42 that does not contact the cutting element 30 may abut against each other in the radial direction of the roller 10. Specifically, the end of the first sealing portion 41 adjacent to the second sealing portion 42 has a first side surface, and the end of the second sealing portion 42 adjacent to the first sealing portion 41 has a second side surface. The first side surface and the second side surface are opposite to and abut against each other in the radial direction of the roller 10.

[0071] In some embodiments, the resilient seal 40 is located radially inside the roller 10, that is, the resilient seal 40 is located within the receiving cavity 101. Thus, the roller 10 can protect the resilient seal 40, making it less likely to fall off due to scratches from external objects, which helps ensure the reliability of the connection between the resilient seal 40 and the roller 10. It should be noted that the radially inside of the roller 10 refers to the inner side of the roller 10 near its axis OO1 in the radial direction. The cutting member 30 passes sequentially through the resilient seal 40 and the clearance groove 102 before extending to the radially outside of the roller 10.

[0072] In other embodiments, the elastic seal 40 is located radially outside the roller 10, that is, the elastic seal 40 is located in the outer space of the roller 10. This makes it easier to observe the installation position of the elastic seal 40 when installing it on the roller 10, and provides a large operating space, facilitating the installation of the elastic seal 40 on the roller 10 and improving assembly efficiency. The cutting member 30 passes sequentially through the clearance groove 102 and the elastic seal 40 and then extends to the radially outside of the roller 10.

[0073] Please combine Figure 2 In some embodiments, the roller 10 includes a first cylindrical portion 11 and a second cylindrical portion 12, which are detachably connected. When connected, the first cylindrical portion 11 and the second cylindrical portion 12 together define a receiving cavity 101. That is, a portion of the receiving cavity 101 is located in the first cylindrical portion 11, and a portion of the receiving cavity 101 is located in the second cylindrical portion 12. When the first cylindrical portion 11 and the second cylindrical portion 12 are connected, the portion of the receiving cavity 101 located on the first cylindrical portion 11 and the portion of the receiving cavity 101 located on the second cylindrical portion 12 together form a complete receiving cavity 101. By dividing the roller 10 into a first cylindrical portion 11 and a second cylindrical portion 12, it is convenient to install structures disposed within the receiving cavity 101, such as the transmission mechanism 20, the cutting member 30, and the elastic seal 40 within the receiving cavity 101.

[0074] When the first cylindrical portion 11 and the second cylindrical portion 12 are connected, they together define a clearance groove 102. That is, a part of the clearance groove 102 is located in the first cylindrical portion 11 and a part of the clearance groove 102 is located in the second cylindrical portion 12. When the first cylindrical portion 11 and the second cylindrical portion 12 are connected, the portion of the clearance groove 102 on the first cylindrical portion 11 and the portion of the clearance groove 102 on the second cylindrical portion 12 together form a complete clearance groove 102. Alternatively, the clearance groove 102 is formed on the first cylindrical portion 11 or the second cylindrical portion 12. That is, the clearance groove 102 is entirely located on the first cylindrical portion 11 or the second cylindrical portion 12.

[0075] In some embodiments, the roller 10 is divided into a first cylindrical portion 11 and a second cylindrical portion 12 along a parting surface that coincides with the axis OO1 of the roller 10, such that both the first cylindrical portion 11 and the second cylindrical portion 12 are semi-cylindrical, and the first cylindrical portion 11 and the second cylindrical portion 12 can be detachably connected along the radial direction of the roller 10 to form a complete cylindrical shape.

[0076] Please see Figure 4 and Figure 5 In some embodiments, the cutting element 30 includes a blade 31 and a pushing structure 32. The blade 31 has a cutting end 311. The size of the pushing structure 32 is larger than the size of the blade 31 in the thickness direction of the blade 31. The pushing structure 32 is used to push the elastic seal 40 so that a portion of the elastic seal 40 is in a deformed state, thus avoiding movement of the cutting element 30. By pushing the elastic seal 40 with the pushing structure 32, the cutting element 30 can move more easily in contact with the elastic seal 40, thereby improving the smoothness of the movement of the cutting element 30. At the same time, it can prevent the blade 31 from directly contacting the elastic seal 40 and being directly subjected to the force generated by the elastic seal 40.

[0077] Specifically, the pushing structure 32 passes between the first sealing part 41 and the second sealing part 42. During the movement of the cutting member 30, the pushing structure 32 contacts a portion of the first sealing part 41 and a portion of the second sealing part 42 corresponding to its current position, and pushes the portion of the first sealing part 41 and the portion of the second sealing part 42 corresponding to its current position, causing the portion of the first sealing part 41 and the portion of the second sealing part 42 corresponding to its current position to undergo elastic deformation away from each other, so as to avoid the cutting member 30 from passing through the avoidance groove 102. At the same time, the portion of the first sealing part 41 and the portion of the second sealing part 42 located at the next position and / or the previous position of the pushing structure 32 face each other and do not contact the cutting member 30, so as to cover the avoidance groove 102. After the pushing structure 32 moves from its current position to the next position, the cutting member 30 contacts a portion of the first sealing part 41 and a portion of the second sealing part 42 corresponding to the next position, and pushes the portion of the first sealing part 41 and the portion of the second sealing part 42 corresponding to the next position, causing the portion of the first sealing part 41 and the portion of the second sealing part 42 corresponding to the next position to undergo elastic deformation away from each other, so as to avoid the movement of the cutting member 30. At the same time, the portion of the first sealing part 41 and the portion of the second sealing part 42 corresponding to the current position disengage from the cutting member 30, and return to elastic deformation and abut against each other, so as to cover the avoidance groove 102.

[0078] Please see Figure 5In some embodiments, the pushing structure 32 includes a first pushing end 321 and a second pushing end 322, which extend away from each other along the axial direction of the roller 10. The width of the first pushing end 321 gradually decreases along the direction from the second pushing end 322 to the first pushing end 321, thus forming a first pointed structure. During the movement of the pushing structure 32 along the direction from the second pushing end 322 to the first pushing end 321, this first pointed structure can smoothly push open a portion of the elastic seal 40. This causes the elastic seal 40 in contact with it to undergo elastic deformation, thus avoiding the movement of the cutting element 30. Along the first pushing end 321 and away from the second pushing end 322, the width of the second pushing end 322 gradually decreases, thus forming a second pointed structure. During the movement of the pushing structure 32 from the first pushing end 321 towards the second pushing end 322, this second pointed structure can smoothly push away a portion of the elastic seal 40, causing the elastic seal 40 in contact with it to undergo elastic deformation, thus avoiding the movement of the cutting element 30. It should be noted that the axial direction of the roller 10 refers to the extension direction of the axis OO1 of the roller 10.

[0079] In this embodiment, a first pushing end 321 and a second pushing end 322 extending away from each other are provided along the axial direction of the roller 10, so that when the transmission mechanism 20 drives the cutting piece 30 to reciprocate, a portion of the elastic sealing member 40 can be pushed through the first pushing end 321 and the second pushing end 322 respectively, ensuring the smoothness of the cutting piece 30 in reciprocating motion.

[0080] Please continue reading. Figure 5 In some embodiments, the cutting member 30 includes a connector 33 and a cutter 31. The connector 33 is connected to the transmission mechanism 20, and the cutter 31 is connected to the connector 33. The cutter 31 has a cutting end 311.

[0081] The connector 33 and the cutter 31 are separately configured and fixedly connected. That is, the connector 33 and the cutter 31 are each formed as separate parts and are connected and fixed during assembly. In this way, the connector 33 and the cutter 31 can be made of different materials to better meet their respective performance requirements. Alternatively, the connector 33 and the cutter 31 can be integrally formed, that is, the connector 33 and the cutter 31 together form the same part. In this way, the assembly steps between the connector 33 and the cutter 31 can be saved, which facilitates the installation of the cutting part 30.

[0082] It is understood that in some embodiments, the aforementioned push structure 32 is connected to the connector 33. The push structure 32 and the connector 33 are separately provided and fixedly connected, that is, the push structure 32 and the connector 33 are each formed as separate parts; or, the push structure 32 and the connector 33 are integrally formed, that is, the push structure 32 and the connector 33 together form the same part.

[0083] Please see Figure 6 In some embodiments, the cutting end 311 has a first cutting edge 3111 and a second cutting edge 3112. The first cutting edge 3111 and the second cutting edge 3112 are respectively located on both sides of the cutting end 311 along the axial direction of the roller 10. The first included angle α between the first cutting edge 3111 and the axis OO1 of the roller 10 is less than or equal to the second included angle β between the second cutting edge 3112 and the axis OO1 of the roller 10.

[0084] In this embodiment, firstly, by providing a first cutting edge 3111 and a second cutting edge 3112 on the cutting end 311, the bidirectional cutting function of the cutting end 311 can be realized, giving the tool 31 a better cutting effect, reducing the workload of a single cutting edge, and facilitating the long-term use of the tool 31. Secondly, by limiting the included angles between the first cutting edge 3111 and the second cutting edge 3112 and the axis OO1 of the roller 10, the first cutting edge 3111 and the second cutting edge 3112 can be combined to achieve a complementary effect. Specifically, during the reciprocating motion of the cutting end 311, the first included angle α between it and the axis OO1 of the roller 10 is smaller. When the first cutting edge 3111 comes into contact with foreign objects such as hair wrapped around the roller 10, it generates a relatively large thrust along the radial direction of the roller 10, causing the foreign objects to be pushed outward from the inside. This allows some harder foreign objects such as hair to be squeezed out. As a result, the first cutting edge 3111 cuts a smaller amount of foreign objects such as hair at one time, making it less likely to jam. In contrast, when the second cutting edge 3112, which has a larger second included angle β with the axis OO1 of the roller 10, comes into contact with foreign objects such as hair wrapped around the roller 10, it generates a relatively large shearing force along the axial direction of the roller 10, resulting in a better cutting effect on foreign objects such as hair.

[0085] It is understood that in some other embodiments, the first included angle α between the first cutting edge 3111 and the axis OO1 of the roller 10 is equal to the second included angle β between the second cutting edge 3112 and the axis OO1 of the roller 10. In this way, the structural design of the tool 31 can be simplified, and the cutting effect of the tool 31 in both directions can be more uniform.

[0086] Please see Figure 7In some embodiments, the cutting element 30 includes a blade 31, which passes through the clearance groove 102 and forms a cutting end 311. The blade 31 is guided and engaged with the clearance groove 102, and the extension path of the clearance groove 102 is configured as a preset path. That is, during the reciprocating motion of the cutting element 30 driven by the transmission mechanism 20, the clearance groove 102 guides the movement of the blade 31, so that the cutting end 311 can reciprocate along the extension path of the clearance groove 102. In other words, the cutting end 311 reciprocates along the preset path. In this way, the cutting end 311 can avoid deflection during the movement and ensure that the cutting end 311 can achieve a better cutting effect on foreign objects such as hair wrapped around the roller 10 during the movement.

[0087] The width of the clearance groove 102 is slightly wider than the width of the tool 31, so that the tool 31 can be just placed in the clearance groove 102 and the clearance groove 102 can guide the tool 31.

[0088] It is understandable that in order to achieve the cutting function of the tool 31, the tool 31 usually needs to be designed to be relatively thin. In order to achieve the guiding function of the tool 31, the clearance groove 102 also needs to be designed to be relatively narrow so that the clearance groove 102 can be adapted to the tool 31. Therefore, by making the clearance groove 102 and the tool 31 guide and cooperate, foreign objects from the outside can be prevented from entering the receiving cavity 101 through the clearance groove 102 to a certain extent.

[0089] Specifically, the clearance groove 102 includes a first abutment surface 1021 and a second abutment surface 1022, both extending along a preset path. When the transmission mechanism 20 drives the cutting piece 30 to move, the first abutment surface 1021 abuts against one side of the cutter 31 to restrict the cutting piece 30 from rotating relative to the clearance groove 102 along a first circumferential direction F1, and the second abutment surface 1022 abuts against the other side of the cutter 31 to restrict the cutting piece 30 from rotating relative to the clearance groove 102 along a second circumferential direction F2. The first circumferential direction F1 and the second circumferential direction F2 both surround the axis OO1 of the roller 10 and are in opposite directions.

[0090] More specifically, the transmission mechanism 20 includes a lead screw, and the cutting element 30 is threadedly connected to the lead screw. When the lead screw rotates along the first circumferential direction F1, it can drive the cutting element 30 along a direction perpendicular to the direction F1. Figure 7 When the paper moves inward, the first contact surface 1021 abuts against one side of the cutter 31, thus restricting the cutting part 30 from rotating relative to the relief groove 102 in the first circumferential direction F1; when the lead screw rotates in the second circumferential direction F2, it can drive the cutting part 30 in a direction perpendicular to the paper. Figure 7As the paper moves outward, the second contact surface 1022 abuts against the other side of the cutter 31, thus restricting the cutting piece 30 from rotating relative to the clearance groove 102 along the second circumferential direction F2. In this way, the cutting end 311 reciprocates along a preset path.

[0091] Please continue reading. Figure 7 In other embodiments, the elastic seal 40 includes a first sealing portion 41 and a second sealing portion 42; a portion of the first sealing portion 41 and a portion of the second sealing portion 42 together clamp the cutting member 30 and are in a deformed state to prevent the cutting member 30 from penetrating the clearance groove 102; a portion of the first sealing portion 41 that is not in contact with the cutting member 30 and a portion of the second sealing portion 42 that is not in contact with the cutting member 30 abut against each other and are in a shielding state to shield the clearance groove 102; the abutting fit between the first sealing portion 41 and the second sealing portion 42 defines a preset path. With the above settings, under the joint clamping action of the first sealing portion 41 and the second sealing portion 42, the cutting end 311 can reciprocate along the preset path defined between the first sealing portion 41 and the second sealing portion 42. In this way, the cutting end 311 can avoid deflection during movement and ensure that the cutting end 311 can achieve a better cutting effect on foreign objects such as hair wrapped around the roller 10 during movement.

[0092] Specifically, the first sealing part 41 includes a first end face 411, and the second sealing part 42 includes a second end face 421. The first end face 411 and the second end face 421 are opposite and abut against each other along the circumference of the roller 10. The abutting fit between the first end face 411 and the second end face 421 defines a preset path, and both the first end face 411 and the second end face 421 extend along the preset path. When the transmission mechanism 20 drives the cutting part 30 to move, the first end face 411 can abut against one side of the cutting part 30 to restrict the cutting part 30 from rotating relative to the relief groove 102 along the first circumferential direction F1, and the second end face 421 can abut against the other side of the cutting part 30 to restrict the cutting part 30 from rotating relative to the relief groove 102 along the second circumferential direction F2. Among them, the first circumferential direction F1 and the second circumferential direction F2 are both around the axis OO1 of the roller 10 and are in opposite directions.

[0093] More specifically, the transmission mechanism 20 includes a lead screw, and the cutting element 30 is threadedly connected to the lead screw. When the lead screw rotates along the first circumferential direction F1, it can drive the cutting element 30 along a direction perpendicular to the direction F1. Figure 7 The paper moves inwards, at which point the first end face 411 abuts against one side of the cutting element 30, thus restricting the cutting element 30 from rotating relative to the clearance groove 102 along the first circumferential direction F1; when the lead screw rotates along the second circumferential direction F2, it can drive the cutting element 30 along a direction perpendicular to the paper. Figure 7The paper moves outward, at which point the second end face 421 abuts against the other side of the cutting member 30, thus restricting the cutting member 30 from rotating relative to the clearance groove 102 along the second circumferential direction F2. In this way, the cutting end 311 reciprocates along a preset path.

[0094] Please continue reading. Figure 7 In other embodiments, the roller 10 is provided with a first guide structure 13 and the cutting element 30 is provided with a second guide structure 34. The first guide structure 13 and the second guide structure 34 cooperate to guide the cutting end 311 to move along a preset path. In this way, the cutting end 311 can be prevented from deflecting during the movement, and the cutting end 311 can achieve a better cutting effect on foreign objects such as hair wrapped on the roller 10 during the movement.

[0095] Specifically, the first guide structure 13 includes a third abutment surface 131 and a fourth abutment surface 132, both extending along a preset path. The second guide structure 34 includes a fifth abutment surface 341 and a sixth abutment surface 342. When the transmission mechanism 20 drives the cutting piece 30 to move, the third abutment surface 131 abuts against the fifth abutment surface 341 to restrict the cutting piece 30 from rotating relative to the clearance groove 102 along the first circumferential direction F1, and the fourth abutment surface 132 abuts against the sixth abutment surface 342 to restrict the cutting piece 30 from rotating along the second circumferential direction F2. The first circumferential direction F1 and the second circumferential direction F2 both surround the axis OO1 of the roller 10 and are in opposite directions.

[0096] More specifically, the transmission mechanism 20 includes a lead screw, and the cutting element 30 is threadedly connected to the lead screw. When the lead screw rotates along the first circumferential direction F1, it can drive the cutting element 30 along a direction perpendicular to the direction F1. Figure 7 The paper moves inwards, at which point the third abutment surface 131 abuts against the fifth abutment surface 341, thus restricting the cutting element 30 from rotating relative to the clearance groove 102 along the first circumferential direction F1; when the lead screw rotates along the second circumferential direction F2, it can drive the cutting element 30 along a direction perpendicular to the paper. Figure 7 As the paper moves outward, the fourth abutment surface 132 abuts against the sixth abutment surface 342, thus restricting the cutting element 30 from rotating relative to the clearance groove 102 along the second circumferential direction F2. In this way, the cutting end 311 can reciprocate along a preset path.

[0097] The first guide structure 13 can be a protrusion protruding from the inner wall of the roller 10, and the second guide structure 34 can be a protrusion protruding from the outer peripheral side wall of the connector 33.

[0098] It is understood that in some embodiments, the second guide structure 34 is connected to the connector 33. The second guide structure 34 and the connector 33 are separately provided but fixedly connected, that is, the second guide structure 34 and the connector 33 are each formed as separate parts; or, the second guide structure 34 and the connector 33 are integrally formed, that is, the second guide structure 34 and the connector 33 together form the same part.

[0099] Please see Figure 8 In other embodiments, the elastic seal 40 is located radially inside the roller 10. The elastic seal 40 is provided with a third guide structure 43, and the cutting member 30 is provided with a fourth guide structure 35. The third guide structure 43 and the fourth guide structure 35 are guided and cooperated to guide the cutting end 311 to move along a preset path. In this way, the cutting end 311 can be prevented from deflecting during the movement, and the cutting end 311 can achieve a better cutting effect on foreign objects such as hair wrapped on the roller 10 during the movement.

[0100] Specifically, the third guide structure 43 includes a seventh abutment surface 431 and an eighth abutment surface 432, both extending along a preset path. The fourth guide structure 35 includes a ninth abutment surface 351 and a tenth abutment surface 352. When the transmission mechanism 20 drives the cutting piece 30 to move, the seventh abutment surface 431 can abut against the ninth abutment surface 351 to restrict the cutting piece 30 from rotating relative to the clearance groove 102 along the first circumferential direction F1, and the eighth abutment surface 432 can abut against the tenth abutment surface 352 to restrict the cutting piece 30 from rotating along the second circumferential direction F2. The first circumferential direction F1 and the second circumferential direction F2 both surround the axis OO1 of the roller 10 and are in opposite directions.

[0101] More specifically, the transmission mechanism 20 includes a lead screw, and the cutting element 30 is threadedly connected to the lead screw. When the lead screw rotates along the first circumferential direction F1, it can drive the cutting element 30 along a direction perpendicular to the direction F1. Figure 8 The paper moves inwards, at which point the seventh abutment surface 431 abuts against the ninth abutment surface 351, thus restricting the cutting element 30 from rotating relative to the clearance groove 102 along the first circumferential direction F1; when the lead screw rotates along the second circumferential direction F2, it can drive the cutting element 30 along a direction perpendicular to the paper. Figure 8 As the paper moves outward, the eighth contact surface 432 abuts against the tenth contact surface 352, thus restricting the cutting element 30 from rotating relative to the clearance groove 102 along the second circumferential direction F2. In this way, the cutting end 311 reciprocates along a preset path.

[0102] The third guide structure 43 can be the two end structures of the elastic seal 40 along the circumference of the roller 10 (specifically, the first sealing part 41 and the second sealing part 42 are both provided with the third guide structure 43 at the ends away from each other), and the fourth guide structure 35 can be a protrusion structure protruding from the outer peripheral sidewall of the connector 33.

[0103] It is understood that in some embodiments, the fourth guide structure 35 is connected to the connector 33. The fourth guide structure 35 and the connector 33 are separately provided but fixedly connected, that is, the fourth guide structure 35 and the connector 33 are each formed as separate parts; or, the fourth guide structure 35 and the connector 33 are integrally formed, that is, the fourth guide structure 35 and the connector 33 together form the same part.

[0104] It is understandable that the preset path can be set to extend along the axial direction of the roller 10, which can make the movement of the cutting part 30 more stable and also help to simplify the structural design; or, the preset path can also be set to extend along a curve, which can make the movement stroke of the cutter 31 longer and expand the cutting range of the cutter 31 along the circumference of the roller 10, resulting in better cutting effect.

[0105] Please see Figure 3 and Figure 4 In some embodiments, a protective structure 14 is provided on the radially outer side of the roller 10. The protective structure 14 includes multiple protective units 141, which are spaced apart along the axial direction of the roller 10. A gap space 103 is defined between two adjacent protective units 141. Thus, during the rolling process of the roller 10, the gap space 103 between two adjacent protective units 141 has the function of guiding foreign objects such as hair to become entangled therein, thereby improving the roller 10's ability to pick up foreign objects such as hair. Along the radial direction of the roller 10, a clearance space 104 is defined between each protective unit 141 and the clearance groove 102. The gap space 103, the clearance space 104, and the clearance groove 102 are connected. The cutting end 311 passes through the gap space. The cutting end 311 is positioned within the protective structure 14 along the radial direction of the roller 10. This design allows the cutting end 311 to pass through each interval space 103 via the interval space 104 when moving along the preset path. The cutting end 311 can then cut through foreign objects such as hair that are entangled in the interval space 103, causing them to fall off and be collected by the cleaning device's recycling system. This prevents foreign objects such as hair from remaining entangled in the interval space 103, resulting in a better anti-entanglement effect. The cutting end 311 is located inside the protective structure 14 along the radial direction of the roller 10. Thus, the protective structure 14 can protect the cutting end 311, preventing it from being directly exposed to the outside of the roller 10, thereby preventing the cutting end 311 from accidentally injuring the user or damaging the surface of the target to be cleaned.

[0106] Please see Figure 3 and Figure 4 In some embodiments, at least two clearance grooves 102 are formed on the roller 10. The at least two clearance grooves 102 are spaced apart along the circumference of the roller 10. The cutting member 30 includes at least two cutters 31. The at least two cutters 31 are distributed along the circumference of the roller 10. Each cutter 31 has a cutting end 311. The cutting ends 311 of the at least two cutters 31 correspond one-to-one with the at least two clearance grooves 102 and are respectively inserted into the corresponding clearance groove 102.

[0107] In this embodiment, by providing at least two blades 31 and at least two clearance grooves 102 corresponding to their cutting ends 311 along the circumference of the roller 10, the roller brush 100 has at least two cutting portions along the circumference of the roller 10. Thus, the cutting ends 311 of the at least two blades 31 can simultaneously cut long hairs and other foreign objects wrapped around the roller 10 at different positions along the circumference of the roller 10, making the long hairs and other foreign objects shorter, improving the cutting effect of the roller brush 100 on hairs and other foreign objects, preventing hairs and other foreign objects from stubbornly wrapping around the roller 10, and achieving a better anti-winding effect.

[0108] It is understandable that when at least two cutters 31 and at least two clearance grooves 102 corresponding to their cutting ends 311 are provided in the roller 10 along the circumference of the roller 10, at least two protective structures 14 can be provided on the radial outer side of the roller 10, and the protective structures 14, cutters 31 and clearance grooves 102 correspond one-to-one, so that the cutting ends 311 of each cutter 31 can be protected by the corresponding protective structure 14.

[0109] It is understandable that when at least two cutters 31 and at least two clearance grooves 102 corresponding to their cutting ends 311 are provided in the roller 10 along the circumference of the roller 10, the number of elastic seals 40 can also be set to at least two, and the elastic seals 40 and clearance grooves 102 correspond one-to-one, so that each clearance groove 102 can be shielded by the corresponding elastic seal 40. In addition, the number of pushing structures 32 is also at least two, and the pushing structures 32 and elastic seals 40 correspond one-to-one, with each pushing structure 32 passing through the corresponding elastic seal 40.

[0110] Please see Figure 4 In some embodiments, the cutting element 30 includes at least two cutters 31, which are distributed along the axial direction of the roller 10. Each cutter 31 has a cutting end 311, and the cutting ends 311 of the at least two cutters 31 are inserted into the clearance groove 102.

[0111] In this embodiment, by arranging at least two cutters 31 along the axial direction of the roller 10, the roller brush 100 has at least two cutting portions along the axial direction of the roller 10. Thus, the cutting ends 311 of the at least two cutters 31 can simultaneously cut long foreign objects such as hair wrapped around the roller 10 at different positions along the axial direction of the roller 10. If the previous cutting end 311 cannot cut off the foreign object such as hair in one go along the movement direction of the cutting end 311, the next cutting end 311 can continue to cut, resulting in a better cutting effect. At the same time, it can also reduce the number of foreign objects such as hair cut by a single cutting end 311, reduce the workload of a single cutting end 311, and facilitate the long-term use of the cutters 31.

[0112] Please see Figure 3 and Figure 4 In some embodiments, the number of cutting elements 30 is one. This simplifies the motion coordination design between the cutting element 30 and the transmission mechanism 20, reduces costs, and ensures that the reciprocating stroke is longest when there is only one cutting element 30, i.e., the moving speed of the cutting element 30 remains constant. This reduces the frequency of reciprocating motion and thus increases the service life of the motor driving the transmission mechanism 20. Please refer to [link to relevant documentation]. Figure 8 In other embodiments, the number of cutting elements 30 is at least two. The at least two cutting elements 30 are distributed along the axial direction of the roller 10 and are respectively connected to the transmission mechanism 20. The transmission mechanism 20 can drive the at least two cutting elements 30 respectively. In this way, the movement stroke of the cutting end 311 of each cutting element 30 on the roller 10 can be shorter. Under the same movement speed of the transmission mechanism 20, the reciprocating frequency of the cutting end 311 of the at least two cutters 31 is higher, the cutting effect is better, and the number of foreign objects such as hair cut by a single cutting end 311 can be reduced, the workload of a single cutting end 311 is reduced, and it is beneficial to the long-term use of the cutter 31.

[0113] In some embodiments, the transmission mechanism 20 includes a lead screw, and the cutting component 30 is threadedly connected to the lead screw. Using the lead screw as a transmission component can ensure that the transmission mechanism 20 has a large load-bearing capacity, so as to provide a large cutting force for the cutting component 30.

[0114] In one embodiment, a lubricating medium is provided between the cutting element 30 and the lead screw, or between the roller 10 and the lead screw. By providing a lubricating medium, the friction between the cutting element 30 and the lead screw can be reduced, wear can be reduced, the transmission efficiency between the cutting element 30 and the lead screw can be improved, the movement of the cutting element 30 can be made smoother, and the service life of the cutting element 30 and the lead screw can be extended.

[0115] The lubricating medium can be, for example, lubricating oil or grease. The lubricating medium is preferably a grease with low fluidity to reduce the possibility of the lubricating medium flowing out of the roller 10 through the deformed part of the elastic seal 40, thus ensuring that the lubricating medium has a long-term lubricating effect.

[0116] In some embodiments, the lead screw is a ball screw, and the cutting component 30 is provided with a ball nut. The ball screw and the ball nut are engaged by balls. That is to say, the engagement structure between the lead screw and the cutting component 30 is the engagement structure of a ball screw and a ball nut. In this way, the friction between the cutting component 30 and the lead screw can be reduced, wear can be reduced, the transmission efficiency between the cutting component 30 and the lead screw can be improved, the movement of the cutting component 30 can be smoother, the movement accuracy can be high, vibration and noise can be reduced, and the service life can be longer.

[0117] It is understandable that, in order to enable the cutting element 30 to move along the axial direction of the lead screw when it rotates, the cutting element 30 can be restricted from rotating relative to the lead screw through the guiding engagement of the cutting tool 31 and the clearance groove 102, and / or through the guiding engagement of the first guide structure 13 and the second guide structure 34, and / or through the guiding engagement of the third guide structure 43 and the fourth guide structure 35, and / or through the abutting engagement between the first sealing part 41 and the second sealing part 42.

[0118] The lead screw can be rotated by a motor, and the output end of the motor and the lead screw can be connected by a coupling or a reduction gear.

[0119] This utility model embodiment also provides a cleaning device, which includes a movable carrier and a roller brush 100 of any of the above embodiments. The roller brush 100 is connected to the movable carrier, and the movable carrier is used to drive the roller brush 100 to move on the surface of the cleaning target.

[0120] The specific structure of the mobile carrier can be set according to the type of cleaning device. For example, if the cleaning device is a self-moving cleaning robot, the mobile carrier is the robot body. If the cleaning device is a vacuum cleaner used manually by the user, the mobile carrier is the suction head, which is connected to the handle of the vacuum cleaner.

[0121] The cleaning device of this utility model embodiment has the beneficial effects of the roller brush 100, which will not be described in detail here.

[0122] It should be noted that the cleaning device provided in this embodiment only shows the part related to the technical problem to be solved by this embodiment. It is understood that the cleaning device provided in this embodiment also includes other structures for realizing the function of the cleaning device, including but not limited to recycling systems for recycling garbage.

[0123] Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of this utility model. Furthermore, embodiments of this utility model and features thereof can be combined with each other, unless otherwise specified.

Claims

1. A roller brush, characterized in that, include: A roller, wherein a receiving cavity is formed inside the roller and a clearance groove is formed on the roller; A transmission mechanism, wherein the transmission mechanism is disposed within the accommodating cavity; A cutting element is connected to the transmission mechanism and passes through the clearance groove. One end of the cutting element away from the axis of the roller is formed as a cutting end, and at least a portion of the cutting end extends to the radially outer side of the roller. The transmission mechanism is used to drive the cutting element to reciprocate so that the cutting end reciprocates along a preset path. An elastic seal is provided to shield the clearance groove, and the cutting element passes through the elastic seal; wherein... During the movement of the cutting element, a portion of the elastic seal contacts the cutting element and is in a deformed state to avoid the movement of the cutting element, while the portion of the elastic seal that does not contact the cutting element is in a shielded state to shield the avoidance groove.

2. The roller brush according to claim 1, characterized in that, The elastic seal includes a first sealing portion and a second sealing portion; A portion of the first sealing portion and a portion of the second sealing portion together clamp the cutting element and are in a deformed state to prevent the cutting element from penetrating the clearance groove; a portion of the first sealing portion that is not in contact with the cutting element and a portion of the second sealing portion that is not in contact with the cutting element abut against each other and are in a shielding state to shield the clearance groove.

3. The roller brush according to claim 1, characterized in that, The elastic seal is located on the radial inner side of the roller, and the cutting element passes through the elastic seal and the clearance groove in sequence and extends to the radial outer side of the roller; Alternatively, the resilient seal is located radially outside the roller, and the cutting element extends radially outside the roller after passing through the clearance groove and the resilient seal in sequence.

4. The roller brush according to claim 1, characterized in that, The roller includes a first cylindrical section and a second cylindrical section, which are detachably connected and together define the receiving cavity when connected. When the first cylindrical portion and the second cylindrical portion are connected, they together define the clearance groove, or the clearance groove is formed in the first cylindrical portion or the second cylindrical portion.

5. The roller brush according to claim 1, characterized in that, The cutting element includes a cutting tool and a pushing structure. The cutting tool has the cutting end formed thereon. In the thickness direction of the cutting tool, the size of the pushing structure is larger than the size of the cutting tool. The pushing structure is used to push the elastic seal so that a portion of the elastic seal is in a deformed state and to avoid the movement of the cutting element.

6. The roller brush according to claim 5, characterized in that, The extrusion structure includes a first extrusion end and a second extrusion end, which extend away from each other along the axial direction of the roller, respectively; the width of the first extrusion end gradually decreases along the direction from the second extrusion end to the first extrusion end; and the width of the second extrusion end gradually decreases along the direction away from the first extrusion end.

7. The roller brush according to claim 1, characterized in that, The cutting end has a first cutting edge and a second cutting edge, the first cutting edge and the second cutting edge are respectively located on both sides of the cutting end along the axial direction of the roller, and the first included angle between the first cutting edge and the axis of the roller is less than or equal to the second included angle between the second cutting edge and the axis of the roller.

8. The roller brush according to claim 1, characterized in that, The cutting component includes a cutting tool that passes through the clearance groove and has the cutting end formed thereon; the cutting tool is guided to the clearance groove, and the extension path of the clearance groove is configured as the preset path. And / or, the resilient seal includes a first sealing portion and a second sealing portion; A portion of the first sealing part and a portion of the second sealing part together clamp the cutting element and are in a deformed state to prevent the cutting element from penetrating the clearance groove; a portion of the first sealing part that does not contact the cutting element and a portion of the second sealing part that does not contact the cutting element abut against each other and are in a shielding state to shield the clearance groove; the abutting fit between the first sealing part and the second sealing part defines the preset path; And / or, the roller is provided with a first guide structure, and the cutting element is provided with a second guide structure, the first guide structure and the second guide structure are guided and cooperated, and are used to guide the cutting end to move along the preset path; And / or, the elastic seal is located on the radial inner side of the roller, the elastic seal is provided with a third guide structure, the cutting element is provided with a fourth guide structure, the third guide structure and the fourth guide structure are guided and cooperated, and are used to guide the cutting end to move along the preset path; The preset path extends along the axial direction of the roller, or the preset path extends along a curve.

9. The roller brush according to claim 1, characterized in that, A protective structure is provided on the radially outer side of the roller. The protective structure includes multiple protective units, which are spaced apart along the axial direction of the roller, with a gap space defined between adjacent protective units. Along the radial direction of the roller, each protective unit defines a clearance space with the clearance groove. The gap space, the clearance space, and the clearance groove are connected. The cutting end passes through the gap space and the clearance space. Along the radial direction of the roller, the cutting end is located on the inner side of the protective structure.

10. The roller brush according to claim 1, characterized in that, At least two clearance grooves are formed on the roller, and the at least two clearance grooves are spaced apart along the circumference of the roller. The cutting element includes at least two cutters, and the at least two cutters are distributed along the circumference of the roller. Each cutter has a cutting end, and the cutting ends of the at least two cutters correspond one-to-one with the at least two clearance grooves and are respectively inserted into the corresponding clearance groove. And / or, the cutting element includes at least two cutters, the at least two cutters are distributed along the axial direction of the roller, each cutter is formed with the cutting end, and the cutting ends of at least two cutters are inserted into the clearance groove; And / or, the number of the cutting elements is one, or the number of the cutting elements is at least two, with at least two cutting elements distributed along the axial direction of the roller and respectively connected to the transmission mechanism.

11. The roller brush according to claim 1, characterized in that, The transmission mechanism includes a lead screw, and the cutting component is threadedly connected to the lead screw. A lubricating medium is provided between the cutting element and the lead screw, or a lubricating medium is provided between the roller and the lead screw; And / or, the lead screw is a ball screw, the cutting component is provided with a ball nut, and the ball screw and the ball nut are engaged by balls.

12. A cleaning device, characterized in that, The cleaning device includes a mobile carrier and a roller brush as described in any one of claims 1 to 11, the roller brush being connected to the mobile carrier.

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