A skirting cleaning structure and a cleaning machine

Abstract

The utility model relates to a kind of edge cleaning structure and cleaning machine, edge cleaning structure includes: frame;Rolling brush, rotatable fixed in the front end of the frame, the surface of the rolling brush protrudes from the front edge of the frame;Hair sweep group, including first hair sweep and second hair sweep, fixed below the frame, respectively located the two sides of the rolling brush;At least a part of the hair brush of the hair sweep group protrudes from the side edge of the frame;The rotating direction of first hair sweep and second hair sweep is opposite, so as to gather the object around the frame to the rolling brush.This embodiment of the utility model has corresponding hair sweep or rolling brush work regardless of which side is close to obstacle, improves cleaning coverage and edge cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of electrical appliances, specifically to an edge cleaning structure and a cleaning machine. Background Technology

[0002] With the improvement of living standards, more and more people are choosing to use cleaning machines such as vacuum cleaners to clean their homes. Taking vacuum cleaners as an example, they are typically used to pick up and clean dust, hair, and particulate matter from floors. To improve cleaning ability, most vacuum cleaner floor brushes are equipped with roller brush components. However, due to the limitations of the roller brush's shape and installation position, floor brushes with roller brush components cannot clean edges, joints, and corners. To adapt to various surfaces, users need to change cleaning tools of different shapes multiple times to achieve different cleaning tasks. This limits the applicability of the floor brush and reduces its cleaning ability and effectiveness.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses an edge-cleaning structure and a cleaning machine that can perform edge-cleaning of the area to be cleaned from multiple sides.

[0005] The technical solution adopted in this embodiment of the utility model is as follows: An edge-cleaning structure includes: a frame; a roller brush rotatably fixed to the front end of the frame, the surface of the roller brush protruding from the front edge of the frame; and a bristle brush assembly, including a first bristle brush and a second bristle brush, fixed below the frame and located on both sides of the roller brush; at least a portion of the bristles of the bristle brush assembly protruding from the side edge of the frame; the first bristle brush and the second bristle brush rotate in opposite directions, thereby gathering objects around the frame toward the roller brush.

[0006] A further technical solution is that the cleaning structure further includes a drive motor and a transmission device; the two ends of the roller brush are provided with a first coupling member and a second coupling member; the transmission device includes: a drive wheel, driven to rotate by the motor; a first side of the drive wheel is fixed to the first coupling member; a first worm gear, fixed to the second side of the drive wheel; a first rotating wheel, meshing with the first worm gear and driving the first brush to rotate; a second worm gear, fixed to the second coupling member; and a second rotating wheel, meshing with the second worm gear and driving the second brush to rotate.

[0007] A further technical solution is that the central hole of the drive wheel has a helical tooth structure, and the first coupling member has a helical tooth structure adapted to the drive wheel; or, the first coupling member has a helical tooth structure, and the central hole of the drive wheel has a helical tooth structure adapted to the first coupling member; so that the drive wheel can drive the first coupling member to rotate coaxially; the number of teeth of the drive wheel and the first coupling member are different.

[0008] A further technical solution is that the speed ratio of the first worm and the first rotating wheel is n1; the speed ratio of the second worm and the second rotating wheel is n2, where n1=n2>1.

[0009] A further technical solution is that the second coupling element is a drive shaft; the end of the second coupling element is provided with a groove structure, and the end of the second worm is provided with a protrusion structure; or, the end of the second coupling element is provided with a protrusion structure, and the end of the second worm is provided with a groove structure; the groove structure and the protrusion structure are shaped to match each other, and torque is transmitted through surface contact.

[0010] A further technical solution is that the groove structure and the protrusion structure can be joined together or separated from each other radially.

[0011] A further technical solution is that a handle is fixed on the roller brush; the handle is provided with a sliding groove with an open opening; the second coupling member is fixed to the closed port of the sliding groove, and the second worm moves along the sliding groove to assemble or detach from the second coupling member.

[0012] A further technical solution is that the cleaning structure includes a negative pressure system; the negative pressure system includes a connector located on the rear side of the frame and an air intake located on the front side of the frame; the fixed connector is connected to the negative pressure fan through a duct; the air intake faces the position of the roller brush.

[0013] A further technical solution is that the negative pressure system also includes a sealing element; the sealing element surrounds the roller brush and the bristle brush assembly in front of the frame, and the sealing element and the front edge of the frame together define the suction area of ​​the cleaning structure.

[0014] A cleaning machine having an edge-sweeping structure as described in any of the preceding claims, characterized in that the cleaning machine is a vacuum cleaner, a sweeper, or a floor scrubber.

[0015] The beneficial effects of this utility model embodiment are as follows:

[0016] This utility model embodiment achieves coordinated cleaning by setting a rotatable, protruding roller brush at the front end of the frame, in conjunction with a bristle brush assembly that protrudes from both ends of the roller brush at the frame edge and rotates relative to each other. The bristle brush assembly can efficiently gather dust and debris from corners and furniture edges towards the roller brush, while the roller brush directly cleans along the edges. The combination of the two avoids dead corners at the edges of the frame, and there is a corresponding bristle brush or roller brush working no matter which side is close to an obstacle, thus improving cleaning coverage and edge cleaning effect.

[0017] This embodiment of the invention utilizes a roller brush as a transmission bridge. By distributing the brush assembly and roller brush to the left, center, and right sections, the smoothness of operation of each rotating structure is improved, reducing noise and vibration. Simultaneously, this transmission method simplifies the overall structure, shortens the force transmission path, and reduces the overall size, creating favorable conditions for a slimmer overall design.

[0018] This utility model embodiment features a handle at one end of the roller brush, and utilizes the combination of a grooved structure and a raised structure to ensure stable and reliable power transmission, while also enabling quick assembly and disassembly of the roller brush. For cleaning tools, this design is more hygienic, easier to maintain, and simplifies the internal structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the edge cleaning structure in an embodiment of this utility model.

[0020] Figure 2 This is a schematic diagram of the edge cleaning structure removing the top cover in an embodiment of this utility model.

[0021] Figure 3 This is an exploded view of an embodiment of this utility model.

[0022] Figure 4 This is a cross-sectional view of the transmission structure shown in an embodiment of this utility model.

[0023] Figure 5 This is a schematic diagram illustrating the disassembly or installation process of the roller brush in an embodiment of this utility model.

[0024] Figure 6 This is a cross-sectional view of the detachable structure shown in an embodiment of this utility model.

[0025] Figure 7 This is a schematic diagram of the handle in an embodiment of this utility model.

[0026] Figure 8 yes Figure 7 Enlarged view of the groove structure.

[0027] Figure 9 This is a schematic diagram of the protruding structure in an embodiment of this utility model.

[0028] Figure 10 This is a schematic diagram showing a portion of the structure of the negative pressure system in an embodiment of this utility model.

[0029] In the diagram: 1. Frame; 101. Top cover; 102. Bottom cover; 103. Top cover; 2. Roller brush; 201. First coupling element; 202. Second coupling element; 203. End cap; 204. Handle; 205. Sliding groove; 206. Groove structure; 207. Protruding structure; 3. Brush assembly; 301. First brush; 302. Second brush; 4. Motor; 5. Transmission device; 501. Drive wheel; 502. First worm gear; 503. First rotating wheel; 504. Second worm gear; 505. Second rotating wheel; 506. Drive bracket; 507. Transmission belt; 508. First bearing; 509. Second bearing; 510. First oil-impregnated bearing; 511. First rotating shaft; 512. Third bearing; 513. First screw; 514. Transmission cover; 515. Fourth bearing; 516. Fifth bearing; 517. Second oil-impregnated bearing; 518. Second rotating shaft; 519. Sixth bearing; 520. Second screw; 6. Negative pressure system; 601. Connector; 602. Air intake; 603. Seal; 604. Air duct. Detailed Implementation

[0030] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0032] Figure 1 This is a schematic diagram of the edge-cleaning structure in an embodiment of this utility model. For example... Figure 1 As shown, the edge cleaning structure includes a frame 1, a roller brush 2, and a bristle brush assembly 3.

[0033] There are two extending fixing parts at the front end of the frame 1. The two ends of the roller brush 2 are respectively fixed to the two fixing parts at the front end of the frame 1, and the roller brush 2 can rotate relative to the frame 1, with the axis of rotation parallel to the front edge of the frame 1. The surface of the roller brush 2 protrudes from the front edge of the frame 1 so that it can clean along the edge without being blocked by the front edge of the frame 1.

[0034] The bristle brush assembly 3 includes a first bristle brush 301 and a second bristle brush 302, fixed below the frame 1 and located on both sides of the roller brush 1. In this embodiment, the bristle brush assembly 3 is a five-claw type with five bundles of bristles, which can quickly sweep the objects to be cleaned into the suction area. Preferably, the bristles are tilted at a 10° angle towards the cleaning surface to avoid hair entanglement and to better sweep in dust, particles, and other objects to be cleaned, thereby achieving a close-fitting cleaning effect. At least a portion of the bristles of the bristle brush assembly 3 protrudes from the side edge of the frame 1. In this embodiment, the bristle brush assembly 3 is located near the front corner of the frame 1 and further includes a portion of the bristles protruding from the front edge of the frame 1. The two bristles in the bristle brush assembly 3 rotate in opposite directions, thereby gathering objects around the frame 1 towards the roller brush 2 in the same direction. Specifically, the rotation direction of both bristles is set from the side edge of the frame 1, through the front edge of the frame 1, and towards the roller brush 2. In some embodiments, the two bristles can also be set to rotate backward simultaneously, sweeping objects from the side backward into the roller brush 2. The broom set 3 allows for convenient cleaning of the side edges of frame 1. Combined with the roller brush 2, it sweeps objects from the front or side edges of frame 1 under the roller brush 2, eliminating blind spots. Furthermore, the two brooms can clean both sides simultaneously, sweeping dust and debris from corners, furniture edges, and other areas towards the center of the roller brush. Regardless of which side of the cleaning structure is closest to an obstacle, the corresponding brush is engaged, improving cleaning coverage.

[0035] Figure 2 This is a schematic diagram of the edge cleaning structure removing the top cover in an embodiment of this utility model. Figure 3 This is an exploded view of an embodiment of this utility model. Figure 4 This is a cross-sectional view showing the transmission structure in an embodiment of this utility model. (See figure) Figure 3 As shown, for ease of installation and maintenance, in this embodiment, the frame 1 is composed of an upper cover 101 and a lower cover 102. Of course, the frame 1 can also be formed by combining other types of covers or by integral molding. The frame 1 also includes a detachable faceplate 103, which covers the roller brush 2 to reduce dust stirring during use. Figure 2 As shown, a portion of the transmission device 5 can be seen after opening the face cover 103 and the top cover 101. (Combined) Figures 2-4 The drive motor 4 drives the brush assembly 3 and the roller brush 2 to rotate simultaneously through the transmission device 5.

[0036] like Figure 2As shown, a first coupling member 201 and a second coupling member 202 are provided at both ends of the rotating shaft of the roller brush 2. The transmission device 5 includes a drive wheel 501, a first worm gear 502, a first rotating wheel 503, a second worm gear 504, and a second rotating wheel 505.

[0037] The drive wheel 501 is driven to rotate by the motor 4. Specifically, the drive wheel 501 is mounted in the first fixed position of the drive bracket 506. The motor 4 drives the drive wheel 501 to rotate via the transmission belt 507.

[0038] Combination Figures 2-4 On the first side of the roller brush 2, the first side of the drive wheel 501 is the power coupling side, fixed to the first coupling member 201. Specifically, the central hole of the drive wheel 501 has a helical tooth structure, and the first coupling member 201 has a matching helical tooth structure, allowing the drive wheel 501 to drive the first coupling member 201 to rotate coaxially. The number of teeth on the drive wheel 501 and the first coupling member 201 are different. Alternatively, the first coupling member 201 has a helical tooth structure, and the central hole of the drive wheel 501 has a matching helical tooth structure. For example, in this embodiment, the central hole of the drive wheel 501 has an internal tooth structure, specifically a helical tooth structure with three teeth. The first coupling member 201 is a drive shaft fixed to the roller brush 2, and the external tooth structure of the first coupling member 201 is a helical tooth structure with six teeth. With this arrangement, when the roller brush 2 is disassembled, the radial lifting force acts on the inclined surface of the helical tooth structure, generating a sliding force along the helical teeth, causing a relative sliding tendency between the two, facilitating separation and disassembly. The different number of teeth reduces the problem of multiple pairs of teeth getting stuck at the same time, and provides the necessary angular tolerance during installation, making installation easier.

[0039] The second side of the drive wheel 501 is the worm gear transmission side, and the first worm 502 is fixed to the second side of the drive wheel 501.

[0040] The first rotating wheel 503 meshes with the first worm gear 502 and drives the first brush 301 to rotate. Figure 2 In the indicated direction, the first worm gear 502 rotates, and its thread drives the first rotating wheel 503 to rotate clockwise inward. Preferably, the speed ratio between the first worm gear 502 and the first rotating wheel 503 is greater than 1, for example, 2:1. This reduces the speed of the first rotating wheel 503, thereby reducing dust generation, improving waste collection ability, and minimizing damage to furniture edges. In actual installation, both ends of the first worm gear 502 are supported on the lower cover 102 by the first bearing 508 and the second bearing 509, respectively, fixing the position of the first worm gear 502 and allowing it to be driven to rotate by the drive wheel 501.

[0041] Figure 10 This is a schematic diagram illustrating a portion of the structure of the negative pressure system in an embodiment of this utility model. See also: Figure 10A first rotating shaft 511 is fixed at the center hole of the first rotating wheel 503, and the upper part of the first rotating shaft 511 is higher than the end face of the first rotating wheel 503. A first oil-impregnated bearing 510 is installed at the second mounting position of the drive bracket 506. A third bearing 512 is fixed in the fixing position of the lower cover 102. The upper end of the first rotating shaft 511 is fitted into the first oil-impregnated bearing 510, and the lower end of the first rotating wheel 503 is fitted into the third bearing 512, so that the first rotating wheel 503 and the first rotating shaft 511 can rotate stably. The first rotating wheel 503 is splined with the first bristle brush 301 to transmit torque, and the first bristle brush 301 is fixed to the first rotating wheel 503 by the first screw 513 for axial positioning. For example, the lower part of the first rotating wheel 503 can be set as a cuboid, and a square hole can be opened in the middle of the first bristle brush 301 for mutual mating, or other non-circular cross sections can be used for mating.

[0042] On the second side of the roller brush 2, the second worm 504 is fixed to the second coupling member 202. The second rotating wheel 505 meshes with the second worm 504 and drives the second bristle brush 302 to rotate; its specific arrangement can also refer to the installation method of the first side of the roller brush 2 described above. Figure 2 In the indicated direction, the second worm 504 rotates, and its thread drives the second rotating wheel 505 to rotate counterclockwise inward. Specifically, the two ends of the second worm 504 are supported on the lower cover 102 by the fourth bearing 515 and the fifth bearing 516 respectively, so that it can be driven to rotate by the roller brush 2.

[0043] The second rotating shaft 518 is fitted into the center hole of the second rotating wheel 505. The second oil-impregnated bearing 517 is fitted onto the transmission cover 514, which is fixed to the lower cover 102. The sixth bearing 519 is fitted into the fixed position of the lower cover 102. The upper end of the second rotating shaft 518 is fixed via the second oil-impregnated bearing 517, and the lower end of the second rotating wheel 505 is fitted onto the sixth bearing 519, allowing the second rotating wheel 505 and the second rotating shaft 518 to rotate stably. The second rotating wheel 505 is spline-fitted with the second brush 302, and the second brush 302 is fixed to the second rotating wheel 505 via the second screw 520.

[0044] One end of the drive wheel 501 is connected to and drives the first rotating wheel 503, which in turn drives the first brush 301 to rotate. At the same time, the other end of the drive wheel 501 works with the roller brush 2, which drives the second brush 302 to rotate through the second rotating wheel 505, forming a dual-drive structure. The roller brush 2 itself acts as a bridge. When the first brush 301 and the second brush 302 are driven respectively, the middle roller brush 2 connects and balances the two sides. This layout disperses the originally concentrated and vibration-prone rotating parts to the left, middle and right parts of the entire system, which enhances the structural stability, ensures the smooth operation of the roller brush 2 and the brush assembly 3, reduces the swaying and noise of the roller brush 2 during high-speed rotation, and can also be combined with the brush assembly 3 to achieve edge cleaning.

[0045] At the same time, compared to the structure of setting up a long drive shaft to drive the second brush 302, this solution of using the brush 2 itself as the transmission medium shortens the transmission path and reduces energy loss and vibration accumulation caused by the transmission links.

[0046] Furthermore, in this embodiment, by using the roller brush 2 itself as the drive shaft, in conjunction with a 90° transmission structure of worm gear and rotating wheel, the function that originally required multiple independent components and a long transmission chain is compressed into a flat, compact unit. This not only frees up valuable space for other key components such as the motor and air duct inside the brush, but also allows the entire cleaning structure to be made thinner, contributing to a slimmer overall design.

[0047] Furthermore, the edge cleaning structure in this embodiment is also designed with a structure that is easy to disassemble.

[0048] Figure 5 This is a schematic diagram illustrating the disassembly or installation process of the roller brush in an embodiment of this utility model. Figure 5 As shown, an end cap 203 is fixed to the second side of the roller brush 2, and an element is mounted on the end cap 203. The second coupling member 202 is a drive shaft, which is mounted on the end cap 203 and can rotate relative to the end cap 203. Figure 6 This is a cross-sectional view of the detachable structure shown in an embodiment of this utility model. Figure 7 This is a schematic diagram of the handle in an embodiment of this utility model. Figure 8 yes Figure 7 Enlarged view of the groove structure. Figure 9 This is a schematic diagram of the protruding structure in an embodiment of this utility model. For example... Figures 5-9As shown, in this embodiment, the end of the second coupling member 202 is provided with a groove structure 206, that is, a recessed contour is formed along the axial direction to accommodate the mating part. The end of the second worm gear 504 is provided with a protrusion structure 207, that is, a protruding contour that matches the groove structure 206 and can be inserted. More specifically, in this embodiment, the groove structure 206 is a V-shaped groove, and the protrusion structure 207 is a V-shaped protrusion. The groove structure 206 and the protrusion structure 207 are shaped to match each other so as to transmit torque through surface contact force, and the two can be installed or separated radially. In other embodiments, the mating surfaces of the groove structure 206 and the protrusion structure 207 can also be rectangular or trapezoidal or other shapes. In other embodiments, the end of the second coupling member 202 is provided with a protrusion structure 207, and the end of the second worm gear 504 is provided with a groove structure 206.

[0049] Furthermore, a handle 204 is fixed to the roller brush 2. The handle 204 is provided with a sliding groove 205 with an open opening. The second coupling member 202 is located at the closed end of the sliding groove 205, and the second worm gear 504 slides along the sliding groove 205 to assemble or disassemble with the second coupling member 202.

[0050] During assembly, the handle 204 can be held, and the second worm 504 can be aligned with the open opening of the sliding groove 205 of the handle 204 and pushed into the handle 204 until the groove structure 206 and the protrusion structure 207 are aligned and engaged. After assembly, the two transmit torque through the contact of the concave and convex surfaces. During disassembly, the handle 204 can be held and pulled out, and the second coupling member 202 can be pulled out accordingly. The second worm 504 can be disengaged along the open opening of the sliding groove 205, thus realizing the separation of the second worm 504 and the second coupling member 202.

[0051] Furthermore, the edge cleaning structure in this embodiment is also designed with a negative pressure system 6.

[0052] Combination Figure 2 , Figure 10 As shown, the negative pressure system 6 includes a fixed connector 601 located at the rear of the frame 1 and an air intake 602 located at the front of the frame 1. The fixed connector 601 and the air duct 604 are connected by a spiral wire seal to form a closed pipe. The upper cover 101 and the lower cover 102 are fixed inside the air duct 604 by screws. The fixed connector 601 is connected to the negative pressure fan through the air duct 604. The air intake 602 is preferably designed to be elongated, facing the roller brush 2 and parallel to the roller brush 2. Objects swept into the area below the roller brush 2 by the brush assembly 3 can be sucked away.

[0053] Furthermore, the negative pressure system 6 also includes a seal 603 fixed to the lower surface of the frame 1. In this embodiment, the seal 603 is a soft bristle strip, but other materials such as rubber strips or other bristles that can provide a barrier effect can also be used. The seal 603 encloses the roller brush 2 and the bristle assembly 3 in front of the frame 1, and the seal 603 and the front edge of the frame 1 together define the suction area of ​​the edge cleaning structure.

[0054] During use, the roller brush 2 rotates at high speed inwards to bring dust, particles, and other cleaning materials into the suction area. The bristle brush assembly 3 rotates at low speed from the left and right sides using extended soft bristles to sweep the cleaning materials into the suction area. A seal 603 encloses the roller brush 2 and bristle brush assembly 3 in front of the frame 1, effectively preventing the bristle brush assembly 3 from sweeping cleaning materials out of the cleaning area during rotation. In conjunction with the air duct 604 and negative pressure fan, the suction area surrounded by the seal 603 forms a near-vacuum state. The negative pressure fan draws all cleaning materials into the cavity within the suction area, achieving a close-fitting cleaning effect.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An edge-mounted cleaning structure, characterized in that, include: frame; A roller brush is rotatably fixed to the front end of the frame, and the surface of the roller brush protrudes from the front edge of the frame; The brush assembly includes a first brush and a second brush, which are fixed below the frame and located on both sides of the roller brush, respectively; at least a portion of the brushes in the brush assembly protrude from the side edge of the frame; the first brush and the second brush rotate in opposite directions, thereby gathering objects around the frame toward the roller brush.

2. The edge-mounted cleaning structure according to claim 1, characterized in that, The cleaning structure further includes a drive motor and a transmission device; the two ends of the roller brush are provided with a first coupling member and a second coupling member; the transmission device includes: The drive wheel is rotated by the motor; a first side of the drive wheel is fixed to the first coupling member. The first worm gear is fixed to the second side of the drive wheel; The first rotating wheel meshes with the first worm gear and drives the first brush to rotate; The second worm gear is fixed to the second coupling member; The second rotating wheel meshes with the second worm gear and drives the second brush to rotate.

3. The edge-mounted cleaning structure according to claim 2, characterized in that, The central hole of the drive wheel has a helical tooth structure, and the first coupling member has a helical tooth structure adapted to the drive wheel; or, the first coupling member has a helical tooth structure, and the central hole of the drive wheel has a helical tooth structure adapted to the first coupling member; so that the drive wheel can drive the first coupling member to rotate coaxially; the number of teeth of the drive wheel and the first coupling member are different.

4. The edge-mounted cleaning structure according to claim 2, characterized in that, The speed ratio of the first worm to the first rotating wheel is n1; the speed ratio of the second worm to the second rotating wheel is n2, where n1 = n2 > 1.

5. The edge-mounted cleaning structure according to claim 2, characterized in that, The second coupling element is a drive shaft; the end of the second coupling element is provided with a groove structure, and the end of the second worm is provided with a protrusion structure; or, the end of the second coupling element is provided with a protrusion structure, and the end of the second worm is provided with a groove structure; the groove structure and the protrusion structure are shaped to match each other, and torque is transmitted through surface contact.

6. The edge-mounted cleaning structure according to claim 5, characterized in that, The groove structure and the protrusion structure can be joined together radially or separated from each other.

7. The edge-mounted cleaning structure according to claim 5, characterized in that, A handle is also fixed to the roller brush; the handle is provided with a sliding groove with an open opening; the second coupling member is fixed to the closed port of the sliding groove, and the second worm moves along the sliding groove to assemble or detach from the second coupling member.

8. The edge-mounted cleaning structure according to claim 1, characterized in that, The cleaning structure includes a negative pressure system; the negative pressure system includes a connector located on the rear side of the frame and an air intake located on the front side of the frame; the fixed connector is connected to the negative pressure fan via an air duct; the air intake faces the position of the roller brush.

9. The edge-mounted cleaning structure according to claim 8, characterized in that, The negative pressure system also includes a seal; the seal surrounds the roller brush and the bristle brush assembly in front of the frame, and the seal and the front edge of the frame together define the suction area of ​​the cleaning structure.

10. A sweeper equipped with an edge-following cleaning structure as described in any one of claims 1 to 9, characterized in that, The cleaning machine can be a vacuum cleaner, a sweeper, or a floor scrubber.

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