Reversing drive mechanism, cutting unit, brush assembly and cleaning apparatus

Abstract

The application discloses a reversing driving mechanism, a cutting unit, a ground brush assembly and a cleaning equipment. The reversing driving mechanism comprises a driving mechanism, a driving wheel, a pair of wheel rings and a bearing. The driving mechanism has a driving shaft. The driving wheel is sleeved and fixed on the driving shaft. The pair of wheel rings are sleeved on the driving wheel and are arranged axially and spaced apart. The axial direction of the wheel rings is inclined relative to the axial direction of the driving shaft. The inclined directions of the pair of wheel rings are opposite. The outer ring surface of the wheel rings is provided with a ball head. The bearing is arranged between the wheel rings and the driving wheel. The pair of moving pieces are provided with a ball socket. Each ball head is inserted into the corresponding ball socket, and the two are tightly matched to form a ball joint connection. The movement direction of the moving pieces is limited to the axial direction of the driving shaft. The single driving mechanism is used for controlling the pair of moving pieces to perform the linear reciprocating motion in the opposite directions, and there is no movement error between the pair of moving pieces, so that the movement precision and stability are guaranteed.

Description

Technical Field

[0001] This application belongs to the field of cleaning device technology, specifically relating to a reversing drive mechanism, a cutting unit, a floor brush assembly, and a cleaning device. Background Technology

[0002] A trimming brush is a type of brush attachment used in vacuum cleaners. It can cut hair and other filamentous materials into shorter segments by driving the blades during cleaning, so that the filaments can be directly sucked up by the vacuum cleaner and prevented from getting tangled on the brush surface.

[0003] Existing trimming brushes use a drive mechanism to control the movement of a single blade to cut filaments, resulting in poor cutting performance. Setting up a pair of blades that can move synchronously can effectively improve the cutting effect, but it requires two drive mechanisms, which increases the size of the brush and raises the cost. In addition, the motion error of a pair of drive mechanisms will affect the cutting effect. Summary of the Invention

[0004] The purpose of this application is to provide a reversing drive mechanism, a cutting unit, a floor brush assembly, and a cleaning device, so as to realize the linear reciprocating motion of a pair of moving parts by using a single drive mechanism, thereby improving the cutting effect of the trimming floor brush on filamentous materials without affecting the size of the floor brush and with low cost.

[0005] To achieve the above objectives, the first aspect of this application provides a commutation drive mechanism, comprising:

[0006] The drive mechanism has a rotatable drive shaft;

[0007] The drive wheel is sleeved and fixed on the drive shaft;

[0008] A pair of wheel rings are fitted onto the drive wheel and spaced apart along the axial direction of the drive shaft. The axial direction of the wheel rings is inclined relative to the axial direction of the drive shaft, and the inclination directions of the pair of wheel rings are opposite. A ball head is arranged on the outer ring surface of the wheel ring.

[0009] A bearing is arranged between the wheel ring and the drive wheel;

[0010] A pair of moving parts correspond one-to-one with a pair of wheel rings. Each moving part is provided with a ball socket that matches the ball head. Each ball head is inserted into the corresponding ball socket, and the two fit together tightly to form a ball joint connection.

[0011] The movement direction of the moving parts is restricted to the axial direction of the drive shaft, so that when the drive wheel rotates, it can drive a pair of wheel rings to swing radially relative to the drive shaft, and drive a pair of moving parts to perform linear reciprocating motion in opposite directions along the axial direction of the drive shaft.

[0012] In one or more embodiments, the drive wheel includes:

[0013] The wheel body is fitted and fixed on the drive shaft;

[0014] A rim is fitted onto the wheel body and circumferentially limited thereto. The rim is located between a pair of wheel rings, and inclined guide surfaces are arranged on both axial sides of the rim. The inclined direction of the inclined guide surfaces is parallel to the inclined direction of the corresponding wheel rings, and the inclined guide surfaces abut against the inner rings of the bearings on the corresponding sides.

[0015] In one or more embodiments, at least one inner ring of the bearing abuts against the wheel body and the wheel rim on both sides, respectively.

[0016] In one or more embodiments, the wheel body includes a large-diameter section and a small-diameter section arranged along the axial direction of the drive shaft, the wheel rim is sleeved on the small-diameter section, a first bearing groove is arranged on the annular surface of the large-diameter section near one end of the wheel rim, and a second bearing groove is arranged on the annular surface of the wheel rim away from the large-diameter section.

[0017] The inclined guide surface is formed on the side of the wheel rim facing the large diameter section and the groove wall of the second bearing groove. The bearing on one side is embedded in the first bearing groove, and the inner ring is limited by the groove wall of the first bearing groove and the wheel rim. The bearing on the other side is embedded in the second bearing groove, and the inner ring abuts against the groove wall of the second bearing groove.

[0018] In one or more embodiments, a swing arm is arranged on the outer ring surface of the wheel ring, and the ball head is arranged at the end of the swing arm.

[0019] In one or more embodiments, the swing arm extends radially along the wheel collar.

[0020] In one or more embodiments, the ball head is arranged on the end side of the swing arm and cooperates with the swing arm to form an L-shaped structure.

[0021] In one or more embodiments, the ball head is a hemisphere or a partial sphere.

[0022] In one or more embodiments, the moving member has a groove on the side facing the wheel ring, the diameter of the groove being larger than the diameter of the swing arm, and the ball socket is arranged on the inner wall of the groove.

[0023] In one or more embodiments, one or both ends of the wheel collar are provided with snaps that abut against the outer ring of the bearing.

[0024] In one or more embodiments, a hollow area is arranged on the surface of the ring.

[0025] A second aspect of this application provides a cutting unit, comprising:

[0026] The commutation drive mechanism described in any of the above embodiments;

[0027] A pair of cutting tools are connected to a pair of moving parts, and the pair of cutting tools are configured to reciprocate in opposite directions along the axial direction of the drive shaft under the drive of the pair of moving parts, so as to cooperate in cutting.

[0028] In one or more embodiments, a tool guide is further included, which extends axially along the drive shaft, and a pair of tools are slidably connected to the tool guide to restrict the movement direction of the tools and the moving parts to the axial direction of the drive shaft.

[0029] In one or more embodiments, the tool guide includes:

[0030] A pair of guide rail brackets, spaced apart from each other;

[0031] A limiting block is arranged between a pair of the guide rail brackets;

[0032] In this configuration, a pair of cutting tools are arranged in the gap between a pair of guide rail supports, and the cutting end of the cutting tool extends out of the gap; the cutting tool is provided with a groove that matches the limiting block, and the limiting block passes through the groove to connect the pair of guide rail supports; in the axial direction of the drive shaft, the extension length of the groove is greater than the extension length of the limiting block.

[0033] To achieve the above objectives, a third aspect of this application provides a floor brush assembly, including the cutting unit described in any of the above embodiments.

[0034] To achieve the above objectives, a fourth aspect of this application provides a cleaning device including the floor brush assembly described in any of the above embodiments.

[0035] The advantages of this application, which differ from existing technologies, are:

[0036] The reversing drive mechanism of this application controls a pair of moving parts to perform linear reciprocating motion in opposite directions through a single drive mechanism, and there is no motion error between the pair of moving parts, thus ensuring motion accuracy and stability.

[0037] The wheel ring of the reversing drive mechanism of this application is connected to the ball socket of the moving part through a ball joint. During the movement of the wheel ring and the moving part, the ball head and the ball socket always maintain a close contact state, and there is no collision between the two. This can effectively avoid the generation of periodic slapping noise during operation. When applied to cleaning equipment to control a pair of blades to cut filaments, it can significantly improve the acoustic performance of the whole machine and the user experience.

[0038] The wheel ring of the reversing drive mechanism of this application is connected to the ball head through a swing arm, which increases the linear displacement of the ball head and improves the movement speed of the moving parts. When applied to cleaning equipment to control the movement of the blade, it can significantly improve the cutting efficiency of the equipment and optimize the overall performance. At the same time, the swing arm is set to extend radially along the wheel ring, which can minimize the length of the swing arm while meeting the stroke requirements of the moving parts, and improve the structural strength of the swing arm.

[0039] The ball joint of the reversing drive mechanism of this application is arranged on the end side of the swing arm and forms an L-shaped structure with the swing arm. The ball joint can hook into the corresponding ball socket, which improves the stability of the ball joint and the ball socket and prevents the ball joint from falling out of the ball socket.

[0040] The reversing drive mechanism of this application includes a wheel rim, and the inclined guide surfaces on both sides of the wheel rim abut against the inner ring of the bearing on the corresponding side, which can ensure that the inclination angle and axial position of the inner ring of the bearing on both sides are strictly defined and synchronized, thereby ensuring the motion synchronization of the wheel rim on both sides and avoiding motion errors. Moreover, the wheel rim directly applies rotational force to the inner ring of the bearing through the inclined guide surface, which improves the motion stability of the overall structure and extends the bearing life.

[0041] The axial end of the wheel ring of the reversing drive mechanism of this application is also provided with a snap that abuts against the outer ring of the bearing to prevent it from shifting during the swinging process and improve the installation and movement stability of the overall drive mechanism.

[0042] The cutting unit of this application controls a pair of blades to perform linear reciprocating motion in opposite directions through a single drive mechanism, which significantly improves the cutting effect while effectively avoiding the increase in the size and cost of the floor brush. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of one embodiment of the reversing drive mechanism of this application;

[0045] Figure 2 This is an exploded structural diagram of one embodiment of the reversing drive mechanism of this application;

[0046] Figure 3 This is a longitudinal cross-sectional view of the first working state of an embodiment of the reversing drive mechanism of this application;

[0047] Figure 4 This is a longitudinal cross-sectional view of the second working state of one embodiment of the reversing drive mechanism of this application;

[0048] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure of the middle AA surface;

[0049] Figure 6 This is a schematic diagram of another perspective of one embodiment of the reversing drive mechanism of this application;

[0050] Figure 7 yes Figure 6 Schematic diagram of the cross-sectional structure of the middle BB surface;

[0051] Figure 8 This is a schematic diagram of the structure of one embodiment of the cutting unit of this application;

[0052] Figure 9 This is an exploded structural diagram of one embodiment of the cutting unit of this application.

[0053] Explanation of key figure labels:

[0054] Drive mechanism 100; drive shaft 101;

[0055] Drive wheel 200; wheel body 201; large diameter section 2011; small diameter section 2012; first bearing groove 2013; spline 2014; wheel rim 202; inclined guide surface 2021; second bearing groove 2022;

[0056] Wheel ring 300; Ball head 301; Hollowed-out area 302; Swing arm 303; Buckle 304;

[0057] Moving part 400; ball socket 401; groove 402;

[0058] Bearing 500; Inner ring 501; Outer ring 502;

[0059] Cutting tool 600; Slide groove 601;

[0060] Tool guide 700; guide bracket 701; limit block 702. Detailed Implementation

[0061] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0062] Existing trimming brushes use a drive mechanism to control the reciprocating motion of a single blade to cut filaments, resulting in poor cutting performance. While setting two drive mechanisms to control the relative reciprocating motion of a pair of blades can significantly improve the cutting effect, it leads to an increase in the size of the brush and higher costs. In addition, the motion error of the pair of drive mechanisms can affect the cutting effect.

[0063] To address the aforementioned issues, the applicant first developed a reversing drive mechanism. This reversing drive mechanism can control a pair of moving parts to perform linear reciprocating motions in opposite directions through a single drive mechanism. It can be applied to trimming floor brushes, thereby significantly improving the cutting effect while effectively avoiding an increase in the size and cost of the floor brush.

[0064] Specifically, please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of one embodiment of the commutation drive mechanism of this application. Figure 2 This is an exploded structural diagram of one embodiment of the reversing drive mechanism of this application. Figure 3 This is a longitudinal cross-sectional view of the first working state of an embodiment of the reversing drive mechanism of this application.

[0065] like Figures 1 to 3 As shown, the reversing drive mechanism includes a drive mechanism 100, a drive wheel 200, a pair of wheel rings 300 and a pair of moving parts 400.

[0066] The drive mechanism 100 has a rotatable drive shaft 101, and the drive wheel 200 is sleeved and fixed on the drive shaft 101 and can rotate with the drive shaft 101.

[0067] In one embodiment, the drive mechanism 100 may be a motor. In other embodiments, the drive mechanism 100 may also be other commonly used rotary drive components in the art, such as hydraulic motors, pneumatic motors, etc., all of which can achieve the effect of this embodiment.

[0068] A pair of wheel rings 300 are spaced apart along the axial direction of the drive shaft 101, and a bearing 500 is arranged between the wheel rings 300 and the drive wheel 200; the axial direction of the wheel rings 300 is inclined relative to the axial direction of the drive shaft 101, and the inclination directions of the pair of wheel rings 300 are opposite, and a ball head 301 is arranged on the outer ring surface of the wheel rings 300.

[0069] The movement direction of the moving part 400 is restricted to the axial direction along the drive shaft 101. A pair of moving parts 400 correspond one-to-one with a pair of wheel rings 300, and the moving part 400 is provided with a ball socket 401 that matches the ball head 301. Each ball head 301 is inserted into the corresponding ball socket 401, and the two are tightly fitted to form a ball joint connection.

[0070] Based on the above scheme, when the drive shaft 101 rotates, it can drive the drive wheel 200 to rotate. During the rotation of the drive wheel 200, the bearing 500 and the wheel ring 300 rotate around the drive shaft 101 as a whole. Since the axial direction of the wheel ring 300 and the bearing 500 is inclined relative to the axial direction of the drive shaft 101, the bearing 500 and the wheel ring 300 will swing radially relative to the drive shaft 101.

[0071] Since the movement direction of the moving part 400 is restricted to the axial direction of the drive shaft 101, and the wheel ring 300 is connected to the moving part 400 by a ball joint through the ball head 301, the wheel ring 300 cannot rotate with the drive wheel 200. During the swing of the wheel ring 300, the ball head 301 can make linear reciprocating motion along the axial direction of the drive shaft 101 and drive the moving part 400 to move synchronously.

[0072] Correspondingly, since the pair of wheel rings 300 are tilted in opposite directions, the pair of moving parts 400 can perform linear reciprocating motion in opposite directions under the action of the pair of ball heads 301, thereby achieving the purpose of controlling the pair of moving parts 400 to perform linear reciprocating motion in opposite directions through a single drive mechanism 100, and there is no motion error between the pair of moving parts 400, ensuring motion accuracy and stability.

[0073] Specifically, please refer to Figure 4 , Figure 4 This is a longitudinal cross-sectional view of the second working state of an embodiment of the reversing drive mechanism of this application. Figure 4 As shown, during the rotation of the drive shaft 101, the wheel ring 300 oscillates radially relative to the drive shaft 101, thereby driving the moving part 400 to perform linear reciprocating motion through the ball head 301. The tilting directions of the pair of wheel rings 300 are opposite, and correspondingly, the pair of moving parts 400 perform linear reciprocating motion in opposite directions.

[0074] Meanwhile, in this embodiment, the wheel ring 300 is connected to the ball socket 401 of the moving part 400 via a ball joint through the ball head 301. During the movement of the wheel ring 300 and the moving part 400, the ball head 301 and the ball socket 401 are always in close contact, and there is no collision between them. This can effectively avoid the generation of periodic slapping noise during operation. When applied to cleaning equipment to control a pair of blades to cut filaments, it can significantly improve the acoustic performance of the whole machine and the user experience.

[0075] It should be noted that the reversing drive mechanism of this embodiment does not show a motion direction limiting mechanism for the moving part 400. In specific embodiments, any method commonly used in the art can be used to limit the motion direction of the moving part 400. For example, the moving part 400 can be directly or indirectly arranged on a guide rail, guide rod, or other guiding mechanism, and the motion direction of the moving part 400 can be limited to the axial direction of the drive shaft 101 by the guiding mechanism, etc., all of which can achieve the effect of this embodiment.

[0076] Furthermore, such as Figure 3 and Figure 4 As shown, in this embodiment, the tilt angles of the pair of wheel rings 300 are the same, and correspondingly, the swing speeds of the pair of wheel rings 300 are the same. In other embodiments, the tilt angles of the pair of wheel rings 300 may be different, and correspondingly, the swing speeds of the pair of wheel rings 300 may be different. The design can be based on actual needs, and all can achieve the effect of this embodiment.

[0077] Furthermore, such as Figure 2 As shown, in this embodiment, a hollow area 302 is arranged on the ring surface of the wheel ring 300. The hollow area 302 can effectively reduce the weight of the wheel ring 300 and reduce the inertial impact force of the wheel ring 300 when it swings at high speed, thereby reducing the vibration of the entire reversing drive mechanism and the body after being applied to the floor brush assembly, and improving the reliability of the bearing 500. On the other hand, during the high-speed swing of the wheel ring 300, airflow can pass through the hollow area 302, reducing the wind resistance encountered by the wheel ring 300 when it moves, and helping the overall structure to dissipate heat and improve the structural reliability.

[0078] like Figure 2 As shown, in this embodiment, a swing arm 303 is also arranged on the outer ring surface of the wheel ring 300, and a ball head 301 is arranged at the end of the swing arm 303.

[0079] Based on the above scheme, since the wheel ring 300 swings radially relative to the drive shaft 101, the distance between the ball head 301 and the radial center of the drive shaft 101 can be increased by arranging the swing arm 303, thereby increasing the linear displacement of the ball head 301 and improving the movement speed of the moving part 400. When applied to cleaning equipment to control the movement of the blade, it can significantly improve the cutting efficiency of the equipment and optimize the overall performance of the machine.

[0080] In this embodiment, the swing arm 303 extends radially along the wheel ring 300. With the total length of the swing arm 303 remaining unchanged, compared with the design of the swing arm 303 in other extension directions, the linear position of the ball head 301 can be maximized. Thus, the length of the swing arm 303 can be minimized while meeting the stroke requirements of the moving part 400, thereby improving the structural strength.

[0081] In other embodiments, depending on actual needs, the swing arm 303 can also be extended in other directions, all of which can achieve the purpose of driving the moving part 400 to reciprocate linear motion.

[0082] For further details, please refer to Figure 5 , Figure 5 yes Figure 3 A schematic diagram of the cross-sectional structure of the middle AA surface, as shown below. Figure 5 As shown, in this embodiment, the ball head 301 is a hemisphere, and the ball socket 401 is a hemisphere-shaped cavity that matches the ball head 301.

[0083] Based on the above solution, the ball head 301 can be directly inserted into or removed from the ball socket 401, which facilitates the installation of the overall accessories and meets the motion freedom requirements of the moving part 400 in a single motion direction.

[0084] In other embodiments, the ball head 301 can also be a complete sphere or a partial sphere structure, and the shape of the ball socket 401 can be adjusted accordingly. It can be designed based on actual needs, and all of them can achieve the effect of this embodiment.

[0085] Furthermore, in this embodiment, the ball head 301 is arranged on the end side of the swing arm 303 and cooperates with the swing arm 303 to form an L-shaped structure.

[0086] Based on the above scheme, the ball head 301 and the swing arm 303 cooperate to form an L-shaped structure. The ball head 301 can hook into the corresponding ball socket 401, further improving the stability of the connection between the ball head 301 and the ball socket 401 and preventing the ball head 301 from falling out of the ball socket 401.

[0087] In other embodiments, the ball head 301 can also be arranged at other positions of the swing arm 303, such as the end face of the swing arm 303, which can achieve the effect of this embodiment to a certain extent.

[0088] Furthermore, such as Figure 2 As shown, in this embodiment, the moving part 400 has a groove 402 on the side facing the wheel ring 300. The diameter of the groove 402 is larger than the diameter of the swing arm 303, and the ball socket 401 is arranged on the inner wall of the groove 402.

[0089] Based on the above scheme, the diameter of the slot 402 is larger than the diameter of the swing arm 303, which can give the swing arm 303 sufficient swing space. At the same time, the maximum swing angle of the swing arm 303 can be limited by the side wall of the slot 402, thereby limiting the maximum linear displacement of the moving part 400 and avoiding excessive displacement of the moving part 400.

[0090] The structure of the commutation drive mechanism is described in further detail below, such as... Figure 3 and Figure 4As shown, in this embodiment, the drive wheel 200 includes a wheel body 201 and a wheel rim 202. The wheel body 201 is sleeved and fixed on the drive shaft 101, and the wheel rim 202 is sleeved on the wheel body 201 and is circumferentially limited with the wheel body 201.

[0091] Among them, the wheel rim 202 is located between a pair of wheel rings 300, and inclined guide surfaces 2021 are arranged on both sides of the axial direction of the wheel rim 202. The inclined direction of the inclined guide surface 2021 is parallel to the inclined direction of the corresponding wheel ring 300, and the inclined guide surface 2021 abuts against the inner ring 501 of the bearing 500 on the corresponding side.

[0092] Based on the above scheme, the inclined guide surfaces 2021 on both sides of the axial direction of the wheel rim 202 abut against the inner rings 501 of the bearings 500 on the corresponding sides, which can ensure that the inclination angle and axial position of the inner rings 501 of the bearings 500 on both sides are strictly defined and synchronized, thereby ensuring the motion synchronization of the wheel rims 300 on both sides and avoiding motion errors. In addition, the wheel rim 202 directly applies rotational force to the inner rings 501 of the bearings 500 through the inclined guide surfaces 2021, which improves the motion stability of the overall structure and extends the life of the bearings 500.

[0093] Furthermore, in this embodiment, the wheel body 201 includes a large-diameter section 2011 and a small-diameter section 2012 arranged along the axial direction of the drive shaft 101. The wheel rim 202 is fitted on the small-diameter section 2012. A first bearing groove 2013 is arranged on the annular surface of the large-diameter section 2011 near the end of the wheel rim 202, and a second bearing groove 2022 is arranged on the annular surface of the wheel rim 202 away from the end of the large-diameter section 2011.

[0094] The inclined guide surface 2021 is formed on the side of the wheel rim 202 facing the large diameter section 2011 and the groove wall of the second bearing groove 2022. The bearing 500 on one side is embedded in the first bearing groove 2013, and the inner ring 501 is limited by the groove wall of the first bearing groove 2013 and the wheel rim 202. The bearing 500 on the other side is embedded in the second bearing groove 2022, and the inner ring 501 abuts against the groove wall of the second bearing groove 2022.

[0095] Based on the above solution, the inner ring 501 of one side of the bearing 500 is limited by the wheel rim 202 and the wheel body 201, further improving its installation and movement stability. In other embodiments, the wheel body 201 can also extend to both ends of the wheel rim 202, and the inner rings 501 of a pair of bearings 500 can also be limited by the wheel body 201 and the wheel rim 202. Alternatively, the wheel body 201 can be omitted, and a pair of bearings 500 can be respectively fitted onto both ends of the wheel rim 202 and respectively abut against the inclined guide surface 2021, etc., all of which can achieve the effect of this embodiment.

[0096] Please see Figure 6 and Figure 7, Figure 6 This is a schematic diagram of another embodiment of the reversing drive mechanism of this application. Figure 7 yes Figure 6 A schematic diagram of the cross-sectional structure of the BB plane.

[0097] like Figure 6 and Figure 7 As shown, in this embodiment, the axial end of the wheel ring 300 is also provided with a buckle 304 that abuts against the outer ring 502 of the bearing 500. The buckle 304 can further limit the axial position of the bearing 500, prevent it from shifting during swinging, and improve the installation and movement stability of the overall structure.

[0098] Specifically, in this embodiment, the buckle 304 is arranged at the end of the wheel ring 300 away from the drive mechanism 100, and the buckle 304 abuts against the outer side of the outer ring 502 of the bearing 500. At the same time, the inner side of the inner ring 501 of the bearing 500 abuts against the inclined guide surface 2021. Under the cooperative action of the buckle 304 and the inclined guide surface 2021, the axial position of the bearing 500 can be effectively limited.

[0099] In other embodiments, the snap fasteners 304 can also be arranged at both ends of the axial direction of the ring 300, and a pair of snap fasteners 304 can respectively abut against both sides of the outer ring 502 of the bearing 500, which can also achieve the effect of this embodiment.

[0100] Based on the reversing drive mechanism of the above embodiments, a pair of moving parts 400 can be controlled by a single drive mechanism 100 to perform linear reciprocating motion in opposite directions, and the synchronous motion of the pair of moving parts 400 can be guaranteed without motion error, effectively reducing cost and mechanism size.

[0101] Furthermore, such as Figure 5 As shown, in this embodiment, the wheel body 201 is fixed on the drive shaft 101 by an interference fit, and the outer circumferential surface of the wheel body 201 is provided with a spline 2014. The wheel rim 202 is circumferentially limited to the wheel body 201 by the spline 2014 to ensure that the wheel rim 202 and the wheel body 201 can rotate synchronously under the action of the drive shaft 101.

[0102] In other embodiments, the wheel body 201 and the wheel rim 202 can also be arranged in other ways, as long as the wheel body 201, the wheel rim 202 and the drive shaft 101 are at the upper limit in the circumferential direction, all of which can achieve the effect of this embodiment.

[0103] This application also provides a cutting unit; please refer to [link / reference]. Figure 8 , Figure 8 This is a schematic diagram of one embodiment of the cutting unit of this application.

[0104] like Figure 8As shown, the cutting unit includes a reversing drive mechanism of any of the above embodiments and a pair of cutters 600, wherein the pair of cutters 600 are configured to reciprocate in opposite directions along the axial direction of the drive shaft 101 under the drive of a pair of moving parts 400, so as to cooperate in cutting.

[0105] Specifically, in order to limit the movement direction of the tool 600 and the moving part 400, the cutting unit also includes a tool guide rail 700, which extends along the axial direction of the drive shaft 101. A pair of tools 600 are slidably connected to the tool guide rail 700 to limit the movement direction of the tool 600 and the moving part 400 to the axial direction of the drive shaft 101.

[0106] In other embodiments, the cutting unit may also include a guide rail that is slidably connected to the moving part 400, or a guide rail that is slidably connected to both the moving part 400 and the cutter 600 may be arranged, etc., all of which can achieve the effect of this embodiment.

[0107] For further details, please refer to Figure 9 , Figure 9 This is an exploded structural diagram of one embodiment of the cutting unit of this application. For example... Figure 9 As shown, in this embodiment, the tool guide 700 includes a pair of guide rail supports 701 arranged at relatively intervals, and a limiting block 702 arranged on the pair of guide rail supports 701.

[0108] Among them, a pair of cutting tools 600 are arranged in the gap of the guide rail bracket 701, and the cutting end of the cutting tool 600 extends out of the gap. The cutting tool 600 is provided with a sliding groove 601 that matches the limiting block 702, and the limiting block 702 passes through the sliding groove 601 to connect the pair of guide rail brackets 701. In the axial direction of the drive shaft 101, the extension length of the sliding groove 601 is greater than the extension length of the limiting block 702.

[0109] Based on the above scheme, the movement direction of the tool 600 can be limited by the cooperation of the limiting block 702 and the slide 601. When the tool 600 slides, the limiting block 702 slides relative to the slide 601. At the same time, by controlling the length of the slide 601, the maximum displacement of the tool 600 can be controlled to avoid excessive displacement of the tool 600.

[0110] In other embodiments, the groove 601 can also be formed on the guide rail bracket 701, and correspondingly, the limiting block 702 can be arranged on the tool 600. Alternatively, the tool guide rail 700 can also adopt other forms of guide rail structure commonly used in the art, such as ball guide rail, linear bearing, slider guide rail, etc., and guide can be achieved by fixing the tool 600 to the slider on the guide rail. All of these can achieve the effect of this embodiment.

[0111] This application also provides a floor brush assembly, which includes the cutting unit of any of the above embodiments.

[0112] This floor brush assembly, by arranging a cutting unit, utilizes a pair of blades 600 in the cutting unit that can perform linear reciprocating motion in opposite directions to achieve efficient cutting of filaments. By cutting the filaments into small segments, it effectively prevents the filaments from getting tangled in the roller brush of the floor brush assembly and facilitates the filaments being sucked into the cleaning equipment by negative pressure.

[0113] Meanwhile, since the cutting unit uses a single drive mechanism 100 to control the movement of a pair of cutters 600, it significantly improves the cutting effect while effectively avoiding the increase in size and cost of the floor brush assembly, making it widely applicable.

[0114] This application also provides a cleaning device that includes a floor brush assembly according to any of the above embodiments.

[0115] In one embodiment, the cleaning equipment can be a vacuum cleaner, a floor scrubber, or a floor scrubber with a vacuuming function, all of which can achieve the effect of this embodiment.

[0116] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0117] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A commutation drive mechanism, characterized in that, include: The drive mechanism has a rotatable drive shaft; The drive wheel is sleeved and fixed on the drive shaft; A pair of wheel rings are fitted onto the drive wheel and spaced apart along the axial direction of the drive shaft. The axial direction of the wheel rings is inclined relative to the axial direction of the drive shaft, and the inclination directions of the pair of wheel rings are opposite. A ball head is arranged on the outer ring surface of the wheel ring. A bearing is arranged between the wheel ring and the drive wheel; A pair of moving parts correspond one-to-one with a pair of wheel rings. Each moving part is provided with a ball socket that matches the ball head. Each ball head is inserted into the corresponding ball socket, and the two fit together tightly to form a ball joint connection. The movement direction of the moving parts is restricted to the axial direction of the drive shaft, so that when the drive wheel rotates, it can drive a pair of wheel rings to swing radially relative to the drive shaft, and drive a pair of moving parts to perform linear reciprocating motion in opposite directions along the axial direction of the drive shaft.

2. The commutation drive mechanism according to claim 1, characterized in that, The drive wheel includes: The wheel body is fitted and fixed on the drive shaft; A rim is fitted onto the wheel body and circumferentially limited thereto. The rim is located between a pair of wheel rings, and inclined guide surfaces are arranged on both axial sides of the rim. The inclined direction of the inclined guide surfaces is parallel to the inclined direction of the corresponding wheel rings, and the inclined guide surfaces abut against the inner rings of the bearings on the corresponding sides.

3. The commutation drive mechanism according to claim 2, characterized in that, At least one inner ring of the bearing abuts against the wheel body and the wheel rim on both sides, respectively.

4. The commutation drive mechanism according to claim 3, characterized in that, The wheel body includes a large-diameter section and a small-diameter section arranged along the axial direction of the drive shaft. The wheel rim is fitted on the small-diameter section. A first bearing groove is arranged on the annular surface of the large-diameter section near one end of the wheel rim, and a second bearing groove is arranged on the annular surface of the wheel rim away from the large-diameter section. The inclined guide surface is formed on the side of the wheel rim facing the large diameter section and the groove wall of the second bearing groove. The bearing on one side is embedded in the first bearing groove, and the inner ring is limited by the groove wall of the first bearing groove and the wheel rim. The bearing on the other side is embedded in the second bearing groove, and the inner ring abuts against the groove wall of the second bearing groove.

5. The commutation drive mechanism according to claim 1, characterized in that, The outer ring surface of the wheel is provided with a swing arm, and the ball head is provided at the end of the swing arm.

6. The commutation drive mechanism according to claim 5, characterized in that, The swing arm extends radially along the wheel collar; and / or, The ball head is arranged on the end side of the swing arm and cooperates with the swing arm to form an L-shaped structure; and / or, The ball head is a hemisphere or a partial sphere.

7. The commutation drive mechanism according to claim 5, characterized in that, The moving part has a groove on the side facing the wheel ring, the diameter of the groove is larger than the diameter of the swing arm, and the ball socket is arranged on the inner wall of the groove.

8. The commutation drive mechanism according to claim 1, characterized in that, One or both ends of the wheel collar are provided with snaps that abut against the outer ring of the bearing; and / or, The ring has a hollowed-out area on its surface.

9. A cutting unit, characterized in that, include: The commutation drive mechanism according to any one of claims 1 to 8; A pair of cutting tools are connected to a pair of moving parts, and the pair of cutting tools are configured to reciprocate in opposite directions along the axial direction of the drive shaft under the drive of the pair of moving parts, so as to cooperate in cutting.

10. The cutting unit according to claim 9, characterized in that, It also includes a tool guide rail, which extends along the axial direction of the drive shaft, and a pair of tools are slidably connected to the tool guide rail to restrict the movement direction of the tools and the moving parts to the axial direction of the drive shaft.

11. The cutting unit according to claim 10, characterized in that, The tool guide includes: A pair of guide rail brackets, spaced apart from each other; A limiting block is arranged between a pair of the guide rail supports; In this configuration, a pair of cutting tools are arranged in the gap between a pair of guide rail supports, and the cutting end of the cutting tool extends out of the gap; the cutting tool is provided with a groove that matches the limiting block, and the limiting block passes through the groove to connect the pair of guide rail supports; in the axial direction of the drive shaft, the extension length of the groove is greater than the extension length of the limiting block.

12. A floor brush assembly, characterized in that, Includes the cutting unit as described in any one of claims 9 to 11.

13. A cleaning device, characterized in that, Includes the floor brush assembly as described in claim 12.

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