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, first cutting part and first elastic member. Formed with accommodating cavity in roller, and form with roller on roller Avoidance groove;Transmission mechanism is set in accommodating cavity;First cutting part is connected in transmission mechanism, and first cutting part has first limit position and second limit position, and transmission mechanism is used to drive first cutting part reciprocating motion between first limit position and second limit position;First cutting part is placed in Avoidance groove, and the axis of first cutting part away from roller one end is formed as first cutting end, and at least part of first cutting end is stretched to the radial outside of roller;First elastic member is used to provide buffer for first cutting part when first cutting part moves to first limit position or second limit position.The utility model can prevent first cutting part from rigid collision with the internal structure of roller when moving to limit position.

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 hair and other debris wrapped around the roller.

[0004] When the cutting parts move to the two extreme positions along the axial direction of the drum under the drive of the transmission mechanism, they are prone to rigid collision with the internal structure of the drum. 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 the cutting parts from rigidly colliding with the internal structure of the roller when they move to their limit position.

[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 first cutting element is connected to the transmission mechanism. The first cutting element has a first limit position and a second limit position. The transmission mechanism is used to drive the first cutting element to reciprocate between the first limit position and the second limit position. The first cutting element passes through the relief groove. The end of the first cutting element away from the axis of the roller is formed as a first cutting end, and at least a portion of the first cutting end extends to the radial outer side of the roller.

[0010] The first elastic element is used to provide cushioning for the first cutting element when it moves to the first limit position or the second limit position.

[0011] The roller brush according to the embodiments of this utility model has at least the following beneficial effects:

[0012] By setting a first elastic element, when the first cutting element moves to the first limit position or the second limit position, the first cutting element will apply a force to the first elastic element. This force forces the first elastic element to undergo elastic deformation. When the first elastic element undergoes elastic deformation, it absorbs the impact of the first cutting element, allowing the first cutting element to obtain buffer from the first elastic element. This prevents the first cutting element from rigidly colliding with the internal structure of the roller when it moves to the first limit position or the second limit position, avoids structural damage to the first cutting element and the internal structure of the roller, and reduces the noise generated by the collision when the first cutting element moves to the first limit position or the second limit position.

[0013] According to some embodiments of the present invention, the transmission mechanism includes a lead screw, which includes a first threaded section and a first non-threaded section. At least one end of the first threaded section is connected to the first non-threaded section. When the first cutting member reciprocates between a first extreme position and a second extreme position, the first cutting member is threadedly connected to the first threaded section. When the first cutting member moves to the first non-threaded section, the first cutting member is at the first extreme position or the second extreme position.

[0014] According to some embodiments of the present invention, the roller is provided with a first limiting structure, and the first cutting member is provided with a second limiting structure. The first limiting structure and the second limiting structure are mutually limiting and are used to restrict the first cutting member from moving relative to the lead screw in the radial and / or circumferential direction when the first cutting member moves to the first non-threaded section.

[0015] According to some embodiments of the present invention, one of the roller and the first cutting member is connected to a first elastic member, and the other of the roller and the first cutting member is provided with a positioning structure. The positioning structure is used to position and cooperate with the first elastic member when the first cutting member moves to the first limit position or the second limit position.

[0016] According to some embodiments of the present invention, the first elastic element is a helical spring, the roller is connected to the helical spring, and the first cutting element is provided with a positioning structure; the positioning structure includes a first convex ring, which is sleeved on the radial outer side of the helical spring when the first cutting element moves to the first limit position or the second limit position, and / or the positioning structure includes a second convex ring, which is sleeved on the radial outer side of the second convex ring when the first cutting element moves to the first limit position or the second limit position.

[0017] Alternatively, the first elastic element is a helical spring, the first cutting element is connected to the helical spring, and the roller is provided with a positioning structure; the positioning structure includes a first convex ring, which is sleeved on the radial outer side of the helical spring when the first cutting element moves to the first limit position or the second limit position, and / or the positioning structure includes a second convex ring, which is sleeved on the radial outer side of the second convex ring when the first cutting element moves to the first limit position or the second limit position.

[0018] According to some embodiments of the present invention, the first 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 first 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.

[0019] According to some embodiments of the present invention, the first cutting element includes a cutting tool, which passes through a relief groove and has a first cutting end; the cutting tool is guided to cooperate with the relief groove, and the relief groove is configured to guide the cutting tool to move along a preset path.

[0020] And / or, the roller is provided with a first guide structure, the first 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 first cutting end to move along a preset path;

[0021] And / or, the roller brush also includes an elastic seal for sealing the clearance groove. The elastic seal is located on the radial inner side of the roller. The first cutting element passes through the elastic seal and the clearance groove. The elastic seal is provided with a third guide structure. The first cutting element is provided with a fourth guide structure. The third guide structure and the fourth guide structure guide and cooperate with each other and are used to guide the first cutting end to move along a preset path.

[0022] And / or, the roller brush further includes an elastic seal, the first cutter passing through the clearance groove, the elastic seal being used to seal the clearance groove; 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 first cutter and are in a deformed state to avoid the first cutter passing through the clearance groove; a portion of the first sealing portion not in contact with the first cutter and abutting against each other and 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, the first sealing portion and the second sealing portion being able to guide the first cutter to move along the preset path;

[0023] The first and second extreme positions are located at both ends of the preset path; the preset path extends along the axial direction of the roller, or extends along a curve.

[0024] 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. A first cutting end passes through the gap space and the clearance space. Along the radial direction of the roller, the first cutting end is located on the inner side of the protective structure.

[0025] 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 first cutting member includes at least two cutting tools, which are distributed along the circumference of the roller. Each cutting tool has a first cutting end, and the first cutting ends of the at least two cutting tools correspond one-to-one with the at least two clearance grooves and are respectively inserted into the corresponding clearance groove.

[0026] And / or, the first cutting element includes at least two cutters, the at least two cutters being distributed along the axial direction of the roller, each cutter having a first cutting end, and the first cutting ends of the at least two cutters being inserted into the clearance groove.

[0027] According to some embodiments of the present invention, the transmission mechanism includes a lead screw, and the first cutting element is threadedly connected to the lead screw;

[0028] A lubricating medium is provided between the first cutting part and the lead screw, or a lubricating medium is provided between the roller and the lead screw;

[0029] And / or, the lead screw is a ball screw, the first cutting element is provided with a ball nut, and the ball screw and the ball nut are engaged by balls.

[0030] According to some embodiments of the present invention, the roller brush further includes a second cutting member and a second elastic member. The first cutting member and the second cutting member are distributed along the axial direction of the roller. The second cutting member is connected to the transmission mechanism. The second cutting member has a third limit position and a fourth limit position. The transmission mechanism is used to drive the second cutting member to reciprocate between the third limit position and the fourth limit position. The second cutting member passes through the relief groove. One end of the second cutting member away from the axis of the roller is formed as a second cutting end, and at least a portion of the second cutting end extends to the radially outer side of the roller. The second elastic member is used to provide cushioning for the second cutting member when it moves to the third limit position or the fourth limit position.

[0031] The transmission mechanism includes a lead screw, which includes a first threaded section, a first non-threaded section, a second threaded section, and a second non-threaded section. At least one end of the first threaded section is connected to the first non-threaded section, and at least one end of the second threaded section is connected to the second non-threaded section. When the first cutting member reciprocates between a first extreme position and a second extreme position, the first cutting member is threadedly connected to the first threaded section. When the first cutting member moves to the first non-threaded section, the first cutting member is at the first extreme position or the second extreme position. When the second cutting member reciprocates between a third extreme position and a fourth extreme position, the second cutting member is threadedly connected to the second threaded section. When the second cutting member moves to the second non-threaded section, the second cutting member is at the third extreme position or the fourth extreme position.

[0032] 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.

[0033] The cleaning device of this utility model embodiment has the beneficial effects of a roller brush, which will not be described in detail here.

[0034] 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

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0036] Figure 1 This is a three-dimensional view of the structure of a roller brush provided in one embodiment of the present invention;

[0037] Figure 2 A planar cross-sectional view along the axial direction of a roller brush provided in one embodiment of the present invention;

[0038] Figure 3 for Figure 2 Enlarged view of part A;

[0039] Figure 4 A planar cross-sectional view along the radial direction of a roller brush provided in one embodiment of the present invention;

[0040] Figure 5 A perspective view of the structure of the first cutting element of the roller brush provided in one embodiment of the present utility model;

[0041] Figure 6 This is a front view of the structure of the cutting tool of the first cutting element of the roller brush provided in one embodiment of the present invention;

[0042] Figure 7 A planar cross-sectional view along the radial direction of a roller brush provided in another embodiment of the present invention;

[0043] Figure 8 A perspective sectional view of a roller brush along its radial direction, provided in one embodiment of the present invention;

[0044] Figure 9 This is a planar cross-sectional view of a roller brush along its axial direction, according to another embodiment of the present invention.

[0045] Figure label:

[0046] 100 roller brushes;

[0047] Roller 10; Receiving cavity 101; Clearance groove 102; Spacing space 103; Clearance space 104; First abutment surface 1021; Second abutment surface 1022; First limiting part 11; First guide structure 12; Third abutment surface 121; Fourth abutment surface 122; Protective structure 13; Protective unit 131;

[0048] Transmission mechanism 20; First threaded section 21; First unthreaded section 22; Second threaded section 23; Second unthreaded section 24;

[0049] First cutting component 30; cutting tool 31; first cutting end 311; first sharpened edge 3111; second sharpened edge 3112; second limiting part 32; positioning structure 33; first convex ring 331; second convex ring 332; second guide structure 34; fifth abutment surface 341; fourth guide structure 35; sixth abutment surface 342; ninth abutment surface 351; tenth abutment surface 352;

[0050] First elastic element 40;

[0051] Elastic seal 50; third guide structure 51; seventh abutment surface 511; eighth abutment surface 512; first sealing part 52; first end face 521; second sealing part 53; second end face 531;

[0052] Second cutting piece 60;

[0053] Second elastic element 70. 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 achieve 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 Figures 2 to 4 The roller brush 100 includes a roller 10, a transmission mechanism 20, a first cutting element 30, and a first elastic element 40.

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

[0063] A transmission mechanism 20 is disposed within the receiving cavity 101. A first cutting element 30 is connected to the transmission mechanism 20. The first cutting element 30 has a first limit position and a second limit position. The transmission mechanism 20 drives the first cutting element 30 to reciprocate between the first limit position and the second limit position. The first cutting element 30 passes through a relief groove 102. One end of the first cutting element 30 away from the axis OO1 of the roller 10 is formed as a first cutting end 311, and at least a portion of the first cutting end 311 extends to the radially outer side of the roller 10. During the reciprocating motion of the first cutting element 30 at the first limit position and the second limit position driven by the transmission mechanism 20, the relief groove 102 avoids the movement of the first cutting element 30. At the same time, the first cutting end 311 can cut hair and other debris wrapped around the roller 10. It should be noted that the radially outer side 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 first elastic element 40 is used to provide cushioning for the first cutting element 30 when it moves to the first limit position or the second limit position. It should be noted that the first limit position and the second limit position are both set as intervals. That is, when the first cutting element 30 moves to the first limit position or the second limit position, the first cutting element 30 can continue to move a small distance within the first limit position or the second limit position to force the first elastic element 40 to undergo elastic deformation and obtain cushioning from the first elastic element 40. Taking the first elastic element 40 as a coil spring as an example, the length of the interval is approximately the length of the elastic deformation of the coil spring.

[0065] In this embodiment of the invention, by providing a first elastic member 40, when the first cutting member 30 moves to the first limit position or the second limit position, the first cutting member 30 will apply a force to the first elastic member 40. This force forces the first elastic member 40 to undergo elastic deformation. When the first elastic member 40 undergoes elastic deformation, it absorbs the impact of the first cutting member 30, allowing the first cutting member 30 to obtain buffering from the first elastic member 40. This prevents the first cutting member 30 from rigidly colliding with the internal structure of the roller 10 when it moves to the first limit position or the second limit position, avoids structural damage to the first cutting member 30 and the internal structure of the roller 10, and reduces the noise generated by the collision when the first cutting member 30 moves to the first limit position or the second limit position.

[0066] In addition, when the first cutting member 30 moves to the first limit position or the second limit position, the first elastic member 40 has the function of restricting the first cutting member 30 from continuing to move in the direction of movement when it moves to the first limit position or the second limit position. Therefore, the first elastic member 40 also has a certain limiting function for the first cutting member 30, which can prevent the first cutting member 30 from leaving the predetermined movement stroke to a certain extent.

[0067] Please see Figure 3 In some embodiments, the transmission mechanism 20 includes a lead screw, which includes a first threaded section 21 and a first unthreaded section 22. At least one end of the first threaded section 21 is connected to the first unthreaded section 22. When the first cutting member 30 reciprocates between a first extreme position and a second extreme position, the first cutting member 30 is threadedly connected to the first threaded section 21. When the first cutting member 30 moves to the first unthreaded section 22, the first cutting member 30 is at the first extreme position or the second extreme position.

[0068] Please see Figure 3 and Figure 4 Specifically, when the lead screw rotates along the first circumferential direction F1, it drives the first cutting element 30 to move along the first threaded section 21 towards the first non-threaded section 22. When the first cutting element 30 reaches the first non-threaded section 22, it just disengages from the threaded engagement with the first threaded section 21. The first cutting element 30 then applies a force to the first elastic element 40 along the direction from the first threaded section 21 towards the first non-threaded section 22. This force forces the first elastic element 40 to undergo elastic deformation. When the first elastic element 40 undergoes elastic deformation, it absorbs the impact of the first cutting element 30, allowing the first cutting element 30 to be buffered by the first elastic element 40. At this point, even if the lead screw continues to rotate along the first circumferential direction F1, the first cutting element 30 cannot continue to move along the direction from the first threaded section 21 towards the first non-threaded section 22.

[0069] Subsequently, when the lead screw rotates along the second circumferential direction F2, the first elastic element 40 accumulates elastic potential energy due to elastic deformation, and applies a reaction force to the first cutting element 30 in the direction from the first non-threaded section 22 to the first threaded section 21. The first elastic element 40 pushes the first cutting element 30 from the first non-threaded section 22 to the first threaded section 21, so that the first cutting element 30 re-engages with the lead screw thread. Thus, the first cutting element 30 moves along the first non-threaded section 22 to the first threaded section 21 under the drive of the lead screw, and disengages from the first non-threaded section 22, thereby achieving a smooth switching of the movement direction of the first cutting element 30 on the lead screw. 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.

[0070] It is understandable that when the first cutting member 30 moves on the first threaded section 21, since there is a threaded engagement between the first cutting member 30 and the first threaded section 21, the threaded engagement has an axial limiting effect on the first cutting member 30. Even if there is an interaction between the first cutting member 30 and the first elastic member 40, the buffering effect of the first elastic member 40 on the first cutting member 30 is relatively weak. Therefore, in this embodiment, by providing a first non-threaded section 22 at the end of the first threaded section 21, the first cutting member 30 can get rid of the axial limiting effect of the first threaded section 21 when it moves to the first non-threaded section 22, thereby allowing the first cutting member 30 to obtain a relatively large buffer from the first elastic member 40 at the first non-threaded section 22.

[0071] In some embodiments, there are two first non-threaded segments 22 and two first elastic members 40. The two first non-threaded segments 22 are respectively connected to the two ends of the first threaded segment 21. One first elastic member 40 is used to provide buffer for the first cutting member 30 when it moves to a first non-threaded segment (i.e., the first extreme position). The other first elastic member 40 is used to provide buffer for the first cutting member 30 when it moves to another first non-threaded segment (i.e., the second extreme position).

[0072] Understandably, when the first cutting element 30 moves on the first threaded section 21, the threaded engagement between the first cutting element 30 and the first threaded section 21 has a certain limiting effect on the first cutting element 30, which can limit the first cutting element 30 from shaking. However, when the first cutting element 30 moves to the first non-threaded section 22, the first cutting element 30 will disengage from the threaded engagement with the first threaded section 21, causing the limiting effect of the first threaded section 21 on the first cutting element 30 to fail, which in turn causes the first cutting element 30 to shake relative to the lead screw.

[0073] In view of this, in some embodiments, the roller 10 is provided with a first limiting structure, and the first cutting member 30 is provided with a second limiting structure. The first limiting structure and the second limiting structure cooperate to limit the movement of the first cutting member 30 relative to the lead screw in the radial and / or circumferential direction when the first cutting member 30 moves to the first non-threaded section 22. Thus, when the first cutting member 30 moves to the first non-threaded section 22 and disengages from the threaded engagement with the first threaded section 21, the limiting engagement between the first limiting structure and the second limiting structure can limit the wobbling of the first cutting member 30 relative to the lead screw, thereby avoiding inaccurate positioning of the first cutting member 30 when it re-threads into the first threaded section 21. It should be noted that the radial direction of the lead screw refers to the direction perpendicular to the axis of the lead screw; the circumferential direction of the lead screw refers to the direction surrounding the axis of the lead screw; wherein, the axis of the lead screw may coincide with or be parallel to the axis OO1 of the roller 10.

[0074] Please see Figure 4 In some embodiments, the first limiting structure includes a first limiting part 11 and the second limiting structure includes a second limiting part 32. The first limiting part 11 and the second limiting part 32 abut against each other along the radial direction of the roller 10 and are used to limit the first cutting part 30 from moving to the first non-threaded section 22 along the radial direction of the lead screw.

[0075] Specifically, the first limiting part 11 includes two limiting grooves that are radially opposite to each other along the roller 10, and the second limiting part 32 includes two limiting protrusions that are radially opposite to each other along the roller 10. The two limiting protrusions are respectively inserted into the two limiting grooves, and the sides of the two limiting protrusions that are away from each other can respectively abut against the groove walls of the two limiting grooves that are away from each other, so as to restrict the movement of the first cutting member 30 toward the groove walls of the two limiting grooves that are away from each other, thereby restricting the movement of the first cutting member 30 relative to the lead screw along the radial direction of the lead screw.

[0076] In other embodiments, the first limiting structure includes a third limiting portion, and the second limiting structure includes a fourth limiting portion. The third limiting portion and the fourth limiting portion abut against each other along the circumference of the roller 10 and are used to restrict the first cutting member 30 from rotating relative to the lead screw about the axis of the lead screw when the first cutting member 30 moves to the first non-threaded section 22. It should be noted that the circumference of the roller 10 refers to the direction surrounding the axis OO1 of the roller 10.

[0077] Please see Figure 3 and Figure 5 In some embodiments, one of the roller 10 and the first cutting member 30 is connected to a first elastic member 40, and the other of the roller 10 and the first cutting member 30 is provided with a positioning structure 33. The positioning structure 33 is used to position and cooperate with the first elastic member 40 when the first cutting member 30 moves to the first limit position or the second limit position, so as to ensure that the first cutting member 30 can always maintain the correct positioning of the first elastic member 40 when it moves to the first limit position or the second limit position, and prevent the first elastic member 40 from shifting, which would cause the first elastic member 40 to fail to provide effective buffering for the first cutting member 30.

[0078] In some embodiments, the first elastic element 40 is a helical spring, the roller 10 is connected to the helical spring, and the first cutting element 30 is provided with a positioning structure 33; the positioning structure 33 includes a first convex ring 331, which is sleeved on the radial outer side of the helical spring when the first cutting element 30 moves to the first limit position or the second limit position, and / or the positioning structure 33 includes a second convex ring 332, which is sleeved on the radial outer side of the second convex ring 332 when the first cutting element 30 moves to the first limit position or the second limit position. In this way, the positioning fit between the first cutting element 30 and the first elastic element 40 can be realized, and the structure is simple.

[0079] In other embodiments, the first elastic element 40 is a helical spring, the first cutting element 30 is connected to the helical spring, and the roller 10 is provided with a positioning structure 33. The positioning structure 33 includes a first convex ring 331, which is sleeved on the radial outer side of the helical spring when the first cutting element 30 moves to the first limit position or the second limit position. And / or, the positioning structure 33 includes a second convex ring 332, which is sleeved on the radial outer side of the second convex ring 332 when the first cutting element 30 moves to the first limit position or the second limit position. In this way, the positioning fit between the first cutting element 30 and the first elastic element 40 can be realized, and the structure is simple.

[0080] It should be noted that the first convex ring 331 or the second convex ring 332 mentioned above can be a ring structure in the shape of a complete circle, a ring structure in the shape of a major arc, or two ring structures in the same circle in the shape of minor arcs set at intervals.

[0081] In some embodiments, a helical spring is disposed in the receiving cavity 101, the helical spring is fixed to the roller 10, and is sleeved on the outside of the first non-threaded section 22.

[0082] In some embodiments, please refer to Figure 6 In some embodiments, the first 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.

[0083] In this embodiment, firstly, by providing a first cutting edge 3111 and a second cutting edge 3112 on the first cutting end 311, the bidirectional cutting function of the first cutting end 311 can be realized, enabling the tool 31 to have 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 first cutting end 311, the first included angle α between it and the axis OO1 of the roller 10 is... When the smaller 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, and it is 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.

[0084] 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.

[0085] Please see Figure 7 In some embodiments, the first cutting element 30 includes a blade 31, which passes through the clearance groove 102 and forms a first cutting end 311. The blade 31 is guided and engaged with the clearance groove 102, which is configured to guide the blade 31 to move along a preset path. That is, during the reciprocating motion of the first cutting element 30 driven by the transmission mechanism 20, the clearance groove 102 guides the movement of the blade 31, so that the first cutting end 311 can move back and forth along the extension path of the clearance groove 102. In other words, the first cutting end 311 moves back and forth along the preset path. This can prevent the first cutting end 311 from deflecting during the movement and ensure that the first cutting end 311 can achieve a better cutting effect on foreign objects such as hair wrapped around the roller 10 during the movement.

[0086] 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.

[0087] 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.

[0088] 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 first cutting member 30 to move, the first abutment surface 1021 abuts against one side of the cutter 31 to restrict the first cutting member 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 first cutting member 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.

[0089] More specifically, the transmission mechanism 20 includes a lead screw, and the first 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 first cutting element 30 along a direction perpendicular to the direction F1. Figure 7 The paper moves inwards, at which point the first contact surface 1021 abuts against one side of the cutter 31, thus restricting the first 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 first cutting element 30 along a direction perpendicular to the paper. Figure 7 As the paper moves outward, the second contact surface 1022 abuts against the other side of the cutter 31, thus restricting the first cutting element 30 from rotating relative to the clearance groove 102 along the second circumferential direction F2. In this way, the first cutting end 311 reciprocates along a preset path.

[0090] Please see Figure 7 In other embodiments, the roller 10 is provided with a first guide structure 12, and the first cutting member 30 is provided with a second guide structure 34. The first guide structure 12 and the second guide structure 34 cooperate to guide the first cutting end 311 to move along a preset path. In this way, the first cutting end 311 can be prevented from deflecting during the movement, and the first cutting end 311 can achieve a better cutting effect on foreign objects such as hair wrapped on the roller 10 during the movement.

[0091] Specifically, the first guide structure 12 includes a third abutment surface 121 and a fourth abutment surface 122, 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 first cutting member 30 to move, the third abutment surface 121 abuts against the fifth abutment surface 341 to restrict the first cutting member 30 from rotating relative to the clearance groove 102 along the first circumferential direction F1. The fourth abutment surface 122 abuts against the sixth abutment surface 342 to restrict the first cutting member 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.

[0092] More specifically, the transmission mechanism 20 includes a lead screw, and the first 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 first cutting element 30 along a direction perpendicular to the direction F1. Figure 7 The paper moves inwards, at which point the third abutment surface 121 abuts against the fifth abutment surface 341, thus restricting the first 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 first cutting element 30 along a direction perpendicular to the paper. Figure 7 As the paper moves outward, the fourth abutment surface 122 abuts against the sixth abutment surface 342, thus restricting the first cutting member 30 from rotating relative to the clearance groove 102 along the second circumferential direction F2. In this way, the first cutting end 311 reciprocates along a preset path.

[0093] The first guide structure 12 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 part of the first cutting member 30 that is threadedly connected to the lead screw.

[0094] Please see Figure 4 In some embodiments, the roller brush 100 further includes an elastic seal 50, which seals the clearance groove 102. The elastic seal 50 is located radially inside the roller 10. The first cutting element 30 passes through the elastic seal 50 and the clearance groove 102. The elastic seal 50 is provided with a third guide structure 51, and the first cutting element 30 is provided with a fourth guide structure 35. The third guide structure 51 and the fourth guide structure 35 guide each other and guide the first cutting end 311 to move along a preset path. This can prevent the first cutting end 311 from deflecting during movement and ensure that the first cutting end 311 can achieve a better cutting effect on foreign objects such as hair wrapped around the roller 10 during movement. It should be noted that the radially inside the roller 10 refers to the inner side of the roller 10 that is close to the axis OO1 of the roller 10 in the radial direction.

[0095] During the movement of the first cutting element 30, a portion of the elastic seal 50 contacts the first cutting element 30 and is in a deformed state to avoid the movement of the first cutting element 30. The portion of the elastic seal 50 that does not contact the first cutting element 30 is in a shielded state to shield the clearance groove 102. By providing the elastic seal 50 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.

[0096] Specifically, the third guide structure 51 includes a seventh abutment surface 511 and an eighth abutment surface 512, 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 first cutting member 30 to move, the seventh abutment surface 511 abuts against the ninth abutment surface 351 to restrict the first cutting member 30 from rotating relative to the clearance groove 102 along the first circumferential direction F1. The eighth abutment surface 512 abuts against the tenth abutment surface 352 to restrict the first cutting member 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.

[0097] More specifically, the transmission mechanism 20 includes a lead screw, and the first 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 first cutting element 30 along a direction perpendicular to the direction F1. Figure 4 The paper moves inwards, at which point the seventh abutment surface 511 abuts against the ninth abutment surface 351, thus restricting the first cutting member 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 first cutting member 30 along a direction perpendicular to the paper. Figure 4 As the paper moves outward, the eighth abutment surface 512 abuts against the tenth abutment surface 352, thus restricting the first cutting member 30 from rotating relative to the clearance groove 102 along the second circumferential direction F2. In this way, the first cutting end 311 reciprocates along a preset path.

[0098] The third guide structure 51 can be the two end structures of the elastic seal 50 along the circumference of the roller 10, and the fourth guide structure 35 can be a protruding structure on the outer peripheral sidewall of the part of the first cutting member 30 that is threadedly connected to the lead screw.

[0099] Please see Figure 7In other embodiments, the roller brush 100 further includes an elastic seal 50. The first cutting member 30 passes through the relief groove 102, and the elastic seal 50 is used to seal the relief groove 102. The elastic seal 50 includes a first sealing portion 52 and a second sealing portion 53. A portion of the first sealing portion 52 and a portion of the second sealing portion 53 together clamp the first cutting member 30 and are in a deformed state to avoid the first cutting member 30 from passing through the relief groove 102. A portion of the first sealing portion 52 that does not contact the first cutting member 30 and abut against each other and are in a shielding state to shield the relief groove 102. The abutting fit between the first sealing portion 52 and the second sealing portion 53 defines a preset path, and the first sealing portion 52 and the second sealing portion 53 can guide the first cutting end 311 to move along the preset path. With the above settings, under the combined clamping action of the first sealing part 52 and the second sealing part 53, the first cutting end 311 can reciprocate along the preset path defined between the first sealing part 52 and the second sealing part 53. In this way, the first cutting end 311 can avoid deflection during the movement, and ensure that the first cutting end 311 can achieve a better cutting effect on foreign objects such as hair wrapped on the roller 10 during the movement.

[0100] In this design, the elastic sealing element 50 is configured as a first sealing part 52 and a second sealing part 53, such that a portion of the first sealing part 52 and a portion of the second sealing part 53 abut against opposite sides of the first cutting element 30, while a portion of the first sealing part 52 that does not contact the cutting element 30 and a portion of the second sealing part 53 that does not contact the first cutting element 30 abut against each other. This allows the elastic sealing element 50 to be approximately positioned around the first cutting element 30, reducing the gap between the elastic sealing element 50 and the first cutting element 30, resulting in a better sealing effect between the elastic sealing element 50 and the cutting element 30. Furthermore, the first sealing part 52 and the second sealing part 53 can work together to effectively shield the clearance groove 102, which helps prevent foreign objects from easily entering the receiving cavity 101 through the gap between the elastic sealing element 50 and the cutting element 30, or the gap between the first sealing part 52 and the second sealing part 53.

[0101] Specifically, the first sealing part 52 includes a first end face 521, and the second sealing part 53 includes a second end face 531. The first end face 521 and the second end face 531 are opposite and abut against each other along the circumference of the roller 10. The abutting fit between the first end face 521 and the second end face 531 defines a preset path, and both the first end face 521 and the second end face 531 extend along the preset path. When the transmission mechanism 20 drives the cutting piece 30 to move, the first end face 521 can abut against one side of the first cutting piece 30 to restrict the first cutting piece 30 from rotating relative to the relief groove 102 along the first circumferential direction F1, and the second end face 531 can abut against the other side of the first cutting piece 30 to restrict the first cutting piece 30 from rotating relative to the relief groove 102 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.

[0102] 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 first cutting element 30 along a direction perpendicular to the direction F1. Figure 7 The paper moves inwards, at which point the first end face 521 abuts against one side of the first cutting member 30, thus restricting the cutting member 30 from rotating relative to the relief groove 102 along the first circumferential direction F1; when the lead screw rotates along the second circumferential direction F2, it can drive the first cutting member 30 along a direction perpendicular to the paper. Figure 7 The paper moves outward, at which point the second end face 531 abuts against the other side of the first cutting member 30, thus restricting the first cutting member 30 from rotating relative to the relief groove 102 along the second circumferential direction F2. In this way, the first cutting end 311 reciprocates along a preset path.

[0103] The aforementioned third guide structure 51 can be disposed at a part of the first sealing part 52 and at the end of the second sealing part 53 that is away from each other.

[0104] It is understandable that the first and second extreme positions are located at the two ends of the preset path; the preset path extends along the axial direction of the roller 10, which makes the movement of the first cutting piece 30 more stable and also helps to simplify the structural design; or, the preset path extends along a curve, which makes the travel of the cutter 31 longer and expands the cutting range of the cutter 31 along the circumference of the roller 10, resulting in better cutting effect. 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.

[0105] It is understood that the aforementioned third limiting part can be the first guide structure 12, and the aforementioned fourth limiting part can be the second guide structure 34. Through the cooperation of the first guide structure 12 and the second guide structure 34, the first cutting part 30 is restricted from rotating relative to the lead screw around the axis of the lead screw when it moves to the first non-threaded section 22. Alternatively, the aforementioned third limiting part can be the third guide structure 51, and the aforementioned fourth limiting part can be the fourth guide structure 35. Through the cooperation of the third guide structure 51 and the fourth guide structure 35, the first cutting part 30 is restricted from rotating relative to the lead screw around the axis of the lead screw when it moves to the first non-threaded section 22.

[0106] Please see Figure 8 In some embodiments, a protective structure 13 is provided on the radially outer side of the roller 10. The protective structure 13 includes multiple protective units 131, which are spaced apart along the axial direction of the roller 10. A gap space 103 is defined between two adjacent protective units 131. Thus, during the rolling process of the roller 10, the gap space 103 between two adjacent protective units 131 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 131 and the clearance groove 102. The gap space 103, the clearance space 104, and the clearance groove 102 are connected. The first cutting end 311 passes through the gap space 103 and the clearance groove 102. The space 104 is provided so that when the first cutting end 311 moves along the preset path, it can pass through each interval space 103 by avoiding the space 104 and cut the hair and other foreign objects wrapped in the interval space 103. This allows the hair and other foreign objects to be cut off and collected by the recycling system of the cleaning device, preventing the hair and other foreign objects from always being wrapped in the interval space 103, thus achieving a better anti-entanglement effect. Along the radial direction of the roller 10, the first cutting end 311 is located inside the protective structure 13. Thus, the protective structure 13 can protect the first cutting end 311, preventing it from being directly exposed to the outside of the roller 10, thereby preventing the first cutting end 311 from accidentally injuring the user or damaging the surface of the cleaning target.

[0107] Please see Figure 8 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 first 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 first cutting end 311. The first 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.

[0108] In this embodiment, by providing at least two blades 31 and at least two clearance grooves 102 corresponding to their first 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 first 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.

[0109] It is understandable that when at least two cutters 31 and at least two clearance grooves 102 corresponding to the first cutting end 311 of the roller 10 are provided in the roller 10, at least two protective structures 13 can be provided on the radial outer side of the roller 10, and the protective structures 13, cutters 31 and clearance grooves 102 correspond one-to-one, so that the first cutting end 311 of each cutter 31 can be protected by the corresponding protective structure 13.

[0110] It is understandable that when at least two cutters 31 and at least two clearance grooves 102 corresponding to the first cutting end 311 are provided in the drum 10, the number of elastic seals 50 can also be set to at least two, and the elastic seals 50 and clearance grooves 102 correspond one-to-one, so that each clearance groove 102 can be shielded by the corresponding elastic seal 50.

[0111] Please see Figure 5 In some embodiments, the first cutting element 30 includes at least two cutting tools 31, which are distributed along the axial direction of the roller 10. Each cutting tool 31 has a first cutting end 311, and the first cutting ends 311 of the at least two cutting tools 31 are inserted into the clearance groove 102.

[0112] 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 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 first cutting end 311 cannot cut the foreign object such as hair in one go along the movement direction of the first cutting end 311, the next first 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 first cutting end 311, reduce the workload of a single first cutting end 311, and facilitate the long-term use of the cutters 31.

[0113] In some embodiments, the transmission mechanism 20 includes a lead screw, and the first cutting member 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 first cutting member 30.

[0114] In one embodiment, a lubricating medium is provided between the first cutting element 30 and the lead screw, or a lubricating medium is provided between the roller 10 and the lead screw. By providing a lubricating medium, the friction between the first cutting element 30 and the lead screw can be reduced, wear can be reduced, the transmission efficiency between the first cutting element 30 and the lead screw can be improved, the movement of the first cutting element 30 can be made smoother, and the service life of the first 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 50, 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 first cutting member 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 first cutting member 30 is the engagement structure of a ball screw and a ball nut. In this way, the friction between the first cutting member 30 and the lead screw can be reduced, wear can be reduced, the transmission efficiency between the first cutting member 30 and the lead screw can be improved, the movement of the first cutting member 30 is smoother, the movement accuracy is high, vibration and noise are reduced, and the service life is longer.

[0117] It is understandable that, in order to enable the first cutting element 30 to move along the axial direction of the lead screw when it rotates, the rotation of the first cutting element 30 relative to the lead screw can be restricted by the guiding engagement of the cutter 31 and the clearance groove 102, and / or by the guiding engagement of the first guide structure 12 and the second guide structure 34, and / or by the guiding engagement of the third guide structure 51 and the fourth guide structure 35, and / or by the abutting engagement between the first sealing part 52 and the second sealing part 53.

[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] Please see Figure 9In some embodiments, the roller brush 100 further includes a second cutting member 60 and a second elastic member 70. The first cutting member 30 and the second cutting member 60 are distributed along the axial direction of the roller 10. The second cutting member 60 is connected to the transmission mechanism 20. The second cutting member 60 has a third limit position and a fourth limit position. The transmission mechanism 20 is used to drive the second cutting member 60 to reciprocate between the third limit position and the fourth limit position. The second cutting member 60 passes through the relief groove 102. One end of the second cutting member 60 away from the axis OO1 of the roller 10 is formed as a second cutting end, and at least a portion of the second cutting end extends to the radially outer side of the roller 10. The second elastic member 70 is used to provide cushioning for the second cutting member 60 when it moves to the third limit position or the fourth limit position.

[0120] The transmission mechanism 20 includes a lead screw, which includes a first threaded section 21, a first non-threaded section 22, a second threaded section 23, and a second non-threaded section 24. At least one end of the first threaded section 21 is connected to the first non-threaded section 22, and at least one end of the second threaded section 23 is connected to the second non-threaded section 24. When the first cutting member 30 reciprocates between a first extreme position and a second extreme position, the first cutting member 30 is threadedly connected to the first threaded section 21. When the first cutting member 30 moves to the first non-threaded section 22, the first cutting member 30 is at the first extreme position or the second extreme position. When the second cutting member 60 reciprocates between a third extreme position and a fourth extreme position, the second cutting member 60 is threadedly connected to the second threaded section 23. When the second cutting member 60 moves to the second non-threaded section 24, the second cutting member 60 is at the third extreme position or the fourth extreme position. It should be noted that the third and fourth limit positions are both set as intervals. That is, when the second cutting member 60 moves to the third and fourth limit positions, the second cutting member 60 can continue to move a small distance in the third or fourth limit position to force the second elastic member 70 to undergo elastic deformation and obtain buffer from the second elastic member 70. Taking the second elastic member 70 as a helical spring as an example, the length of the interval is approximately the length of the elastic deformation of the helical spring.

[0121] In this embodiment, by setting the first cutting element 30 and the second cutting element 60, the travel distance of each of the first cutting element 30 and the second cutting element 60 on the roller 10 can be shorter. Under the same movement speed of the transmission mechanism 20, the reciprocating frequency of the first cutting element 30 and the second cutting element 60 is higher, the cutting effect is better, and the number of foreign objects such as hair cut by a single cutting element can also be reduced, reducing the workload of a single cutting element and facilitating the long-term use of the first cutting element 30 and the second cutting element 60.

[0122] It is understandable that the structure of the second cutting member 60 can be the same as that of the first cutting member 30, and the cooperation method between the second cutting member 60 and the roller 10 can also be the same as that between the first cutting member 30 and the roller 10.

[0123] In some embodiments, there are two first non-threaded segments 22 and two first elastic members 40. The two first non-threaded segments 22 are respectively connected to the two ends of the first threaded segment 21. One first elastic member 40 is used to provide cushioning for the first cutting member 30 when it moves to a first non-threaded segment (i.e., a first extreme position), and the other first elastic member 40 is used to provide cushioning for the first cutting member 30 when it moves to another first non-threaded segment (i.e., a second extreme position). There are two second non-threaded segments 24 and two second elastic members 70. The two second non-threaded segments 24 are respectively connected to the two ends of the second threaded segment 23. One second elastic member 70 is used to provide cushioning for the second cutting member 60 when it moves to a second non-threaded segment 24 (i.e., a third extreme position), and the other second elastic member 70 is used to provide cushioning for the second cutting member 60 when it moves to another second non-threaded segment 24 (i.e., a fourth extreme position).

[0124] It is understandable that the first non-threaded segment 22, the first threaded segment 21, the second non-threaded segment 24, and the second threaded segment 23 are all coaxially arranged, and the first non-threaded segment 22 at one end of the first threaded segment 21 is connected to the second non-threaded segment 24 at one end of the second threaded segment 23.

[0125] It is understandable that the first threaded segment 21 and the second threaded segment 23 may share a non-threaded segment at their adjacent ends, and / or the first threaded segment 21 and the second threaded segment 23 may share an elastic element, which can buffer the first cutting member 30 and the second cutting member 60 respectively.

[0126] In some embodiments, the number of cutting elements is one, that is, only one first cutting element 30 is provided in the roller brush 100. This simplifies the motion coordination design between the first cutting element 30 and the transmission mechanism 20, reduces costs, and when the cutting force of the first cutting element 30 remains unchanged, that is, the moving speed of the first cutting element 30 remains unchanged, the reciprocating motion has the longest stroke when there is only one first cutting element 30, thereby reducing the frequency of reciprocating motion and thus improving the service life of the motor driving the transmission mechanism 20.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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 roll brush characterized by, 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 first cutting element is connected to the transmission mechanism. The first cutting element has a first limit position and a second limit position. The transmission mechanism is used to drive the first cutting element to reciprocate between the first limit position and the second limit position. The first cutting element passes through the clearance groove. One end of the first cutting element away from the axis of the roller is formed as a first cutting end, and at least a portion of the first cutting end extends to the radially outer side of the roller. A first elastic element is used to provide cushioning for the first cutting element when it moves to the first limit position or the second limit position.

2. The roll brush of claim 1, wherein, The transmission mechanism includes a lead screw, which includes a first threaded section and a first non-threaded section. At least one end of the first threaded section is connected to the first non-threaded section. When the first cutting member reciprocates between the first extreme position and the second extreme position, the first cutting member is threadedly connected to the first threaded section. When the first cutting member moves to the first non-threaded section, the first cutting member is at the first extreme position or the second extreme position.

3. The roll brush of claim 2, wherein, The roller is provided with a first limiting structure, and the first cutting member is provided with a second limiting structure. The first limiting structure and the second limiting structure are mutually limiting and are used to restrict the first cutting member from moving relative to the lead screw in the radial and / or circumferential direction when the first cutting member moves to the first non-threaded section.

4. The roll brush of claim 1, wherein, One of the roller and the first cutting member is connected to the first elastic member, and the other of the roller and the first cutting member is provided with a positioning structure. The positioning structure is used to position and cooperate with the first elastic member when the first cutting member moves to the first limit position or the second limit position.

5. The roll brush of claim 4, wherein, The first elastic element is a helical spring, the roller is connected to the helical spring, and the first cutting element is provided with the positioning structure; the positioning structure includes a first convex ring, which is sleeved on the radial outer side of the helical spring when the first cutting element moves to the first limit position or the second limit position, and / or the positioning structure includes a second convex ring, which is sleeved on the radial outer side of the second convex ring when the first cutting element moves to the first limit position or the second limit position. Alternatively, the first elastic element is a helical spring, the first cutting element is connected to the helical spring, and the roller is provided with the positioning structure; the positioning structure includes a first convex ring, which is sleeved on the radial outer side of the helical spring when the first cutting element moves to the first limit position or the second limit position, and / or the positioning structure includes a second convex ring, which is sleeved on the radial outer side of the second convex ring when the first cutting element moves to the first limit position or the second limit position.

6. The roll brush of claim 1, wherein, The first 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 first 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.

7. The roll brush of claim 1, wherein, The first cutting element includes a cutting tool, which passes through the clearance groove and has the first cutting end formed thereon; the cutting tool is guided to the clearance groove, which is configured to guide the cutting tool to move along a preset path; And / or, the roller is provided with a first guide structure, the first 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 first cutting end to move along a preset path; And / or, the roller brush further includes an elastic seal for sealing the clearance groove, the elastic seal being located radially inside the roller, the first cutting member passing through the elastic seal and the clearance groove, the elastic seal being provided with a third guide structure, the first cutting member being provided with a fourth guide structure, the third guide structure and the fourth guide structure being guided and engaged, and used to guide the first cutting end to move along a preset path; And / or, the roller brush further includes an elastic seal, wherein the first cutting member passes through the clearance groove, and the elastic seal is used to seal the clearance groove; 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 first cutting member and are in a deformed state to avoid the first cutting member from passing through the clearance groove; a portion of the first sealing portion that does not contact the first cutting member and a portion of the second sealing portion that does not contact the first cutting member 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, and the first sealing portion and the second sealing portion can guide the first cutting end to move along the preset path; The first extreme position and the second extreme position are located at both ends of the preset path; the preset path extends along the axial direction of the roller, or the preset path extends along a curve.

8. The roll brush of claim 1, wherein, 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 first cutting end passes through the gap space and the clearance space. Along the radial direction of the roller, the first cutting end is located on the inner side of the protective structure.

9. The roll brush of claim 1, wherein, 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 first cutting member includes at least two cutters, and the at least two cutters are distributed along the circumference of the roller. Each cutter has a first cutting end, and the first cutting ends of the at least two cutters correspond one-to-one with the at least two clearance grooves and are respectively inserted into one of the corresponding clearance grooves. And / or, the first cutting element includes at least two cutters, the at least two cutters being distributed along the axial direction of the roller, each of the cutters having a first cutting end, and the first cutting ends of at least two of the cutters being inserted into the clearance groove.

10. The roll brush of claim 1, wherein, The transmission mechanism includes a lead screw, and the first cutting element is threadedly connected to the lead screw; A lubricating medium is provided between the first 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 first cutting member is provided with a ball nut, and the ball screw and the ball nut are engaged by balls.

11. The roll brush of claim 1, wherein, The roller brush further includes a second cutting element and a second elastic element. The first cutting element and the second cutting element are distributed along the axial direction of the roller. The second cutting element is connected to the transmission mechanism. The second cutting element has a third limit position and a fourth limit position. The transmission mechanism is used to drive the second cutting element to reciprocate between the third limit position and the fourth limit position. The second cutting element passes through the clearance groove. One end of the second cutting element away from the axis of the roller is formed as a second cutting end, and at least a portion of the second cutting end extends to the radially outer side of the roller. The second elastic element is used to provide cushioning for the second cutting element when it moves to the third limit position or the fourth limit position. The transmission mechanism includes a lead screw, which includes a first threaded section, a first non-threaded section, a second threaded section, and a second non-threaded section. At least one end of the first threaded section is connected to the first non-threaded section, and at least one end of the second threaded section is connected to the second non-threaded section. When the first cutting member reciprocates between the first extreme position and the second extreme position, the first cutting member is threadedly connected to the first threaded section. When the first cutting member moves to the first non-threaded section, the first cutting member is at the first extreme position or the second extreme position. When the second cutting member reciprocates between the third extreme position and the fourth extreme position, the second cutting member is threadedly connected to the second threaded section. When the second cutting member moves to the second non-threaded section, the second cutting member is at the third extreme position or the fourth extreme position.

12. 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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