A sandpaper polishing device

Abstract

This application relates to a wall sanding device, belonging to the field of building wall construction technology. It includes a first sanding plate and a second sanding plate, with a hinge structure between them. The hinge structure includes a first hinge seat fixed to the first sanding plate, a second hinge seat fixed to the second sanding plate, and a rotating shaft connecting the first and second hinge seats. The first hinge seat has a first through hole for accommodating the rotating shaft; the second hinge seat has a second through hole for accommodating the rotating shaft. The first sanding plate has a first clamping mechanism for fixing sandpaper to its front side, and the second sanding plate has a second clamping mechanism for fixing sandpaper to its front side. An arc-shaped telescopic handle is also provided between the first and second sanding plates. This application has the effect of being able to adjust the angle to adapt to different angles for wall sanding work.

Description

Technical Field

[0001] This application relates to the field of building wall construction, and in particular to a sanding apparatus. Background Technology

[0002] During construction, uneven areas may occur due to technical issues, necessitating sanding to smooth out any protrusions. Sanding equipment consists of a sanding plate and a handle. To sand, the sandpaper is fixed to the sanding plate, and the handle is held to sand the wall. However, when sanding walls with inside or outside corners, most equipment is only suitable for sanding flat surfaces or walls with inside or outside corners. Therefore, different methods may be needed for different wall surfaces.

[0003] Regarding the aforementioned technologies, the inventors believe there is a need to provide a sanding device with adjustable angle. Utility Model Content

[0004] To address the issue of needing to perform sanding operations in multiple stages when encountering walls at different angles during wall sanding, this application provides a sanding device.

[0005] The sandpaper polishing device provided in this application adopts the following technical solution:

[0006] A sandpaper polishing device includes a first polishing plate and a second polishing plate, with a hinge structure between the first and second polishing plates. The hinge structure includes a first hinge seat fixed to the first polishing plate, a second hinge seat fixed to the second polishing plate, and a rotating shaft connecting the first and second hinge seats. The first hinge seat has a first through hole for accommodating the rotating shaft, and the second hinge seat has a second through hole for accommodating the rotating shaft. The first polishing plate is provided with a first clamping mechanism for fixing sandpaper to its front side, and the second polishing plate is provided with a second clamping mechanism for fixing sandpaper to its front side. An arc-shaped telescopic handle is also provided between the first and second polishing plates.

[0007] By adopting the above technical solution, the first and second sanding plates are connected by a hinge structure and can rotate relative to each other. When encountering walls with different angles such as inside corners and outside corners, the angle between the first and second sanding plates can be changed to sand the walls at different angles, reducing the need for multiple operations. The first and second sanding plates are equipped with a first clamping mechanism and a second clamping mechanism for fixing the sandpaper to the front side, which facilitates the installation and replacement of the sandpaper. The arc-shaped telescopic handle makes it convenient for users to operate and can be extended and retracted to adjust the length to adapt to different scenarios.

[0008] Optionally, the rotating shaft includes a first shaft member disposed in the first through hole and a second shaft member disposed in the second through hole; a locking stud is provided at the end of the first shaft member facing the second shaft member, and a first locking disc for pressing the first hinge seat is provided at the end of the first shaft member facing away from the second shaft member; a locking screw hole for cooperating with the locking stud is provided at the end of the second shaft member facing the first shaft member; and a second locking disc for pressing the second hinge seat is provided at the end of the second shaft member facing away from the first shaft member.

[0009] By adopting the above technical solution, the locking stud of the first shaft and the locking screw hole of the second shaft cooperate with each other. When the locking stud is turned, the tightness between the first shaft and the second shaft can be adjusted, thereby adjusting the angle between the first grinding plate and the second grinding plate. When the locking stud is tightened, the first locking disc and the second locking disc can clamp the first hinge seat and the second hinge seat.

[0010] Optionally, the first hinge seat has a first locking hole for the first locking disc to be rotatably arranged; the end face of the first locking disc is provided with a drive groove; the second hinge seat has a second locking hole for the second locking disc to be arranged and for restricting the rotation of the second locking disc.

[0011] By adopting the above technical solution, the drive groove can be easily driven by a tool to rotate the first shaft, thereby realizing the loosening and clamping of the first hinge seat and the second hinge seat; the second locking disc is restricted in the second locking hole, and when the first locking disc is rotated, the first shaft and the second shaft will not rotate at the same time, and slippage will occur, which makes it easy to tighten or loosen the connection between the locking stud and the locking screw hole, thereby facilitating the adjustment and fixing of the angle of the first grinding plate and the second grinding plate.

[0012] Optionally, a toothed surface structure is further provided between the first hinge seat and the second hinge seat; the toothed surface structure includes a first toothed surface disposed on the end face of the first hinge seat and a second toothed surface disposed on the end face of the second hinge seat and cooperating with the first toothed surface.

[0013] By adopting the above technical solution, when the first hinge seat and the second hinge seat are pressed together, the first tooth surface and the second tooth surface cooperate with each other, so that the first hinge seat and the second hinge seat are better locked together, reducing the probability of the first grinding plate and the second grinding plate rotating during operation.

[0014] Optionally, a support spring is further provided between the first hinge seat and the second hinge seat; the end face of the first hinge seat facing the second hinge seat is provided with a first spring groove for arranging the support spring; the end face of the second hinge seat facing the first hinge seat is provided with a second spring groove for arranging the support spring.

[0015] By adopting the above technical solution, a support spring is set between the first hinge seat and the second hinge seat. When the locking stud is loosened by the drive groove, the first tooth surface and the second tooth surface separate under the action of the support spring, which facilitates the rotation of the first grinding plate and the second grinding plate.

[0016] Optionally, the first clamping mechanism includes two first elastic clamps arranged opposite to each other on the rear side of the first grinding plate; the opening directions of the two first elastic clamps are arranged in opposite directions; the second clamping mechanism includes two second elastic clamps arranged opposite to each other on the rear side of the second grinding plate; the opening directions of the two second elastic clamps are arranged in opposite directions.

[0017] By adopting the above technical solution, the two first elastic clamps and the second elastic clamp are arranged symmetrically and have opposite opening directions, so that the sandpaper is laid on the first grinding plate and the second grinding plate when clamped. The structure of the elastic clamp facilitates the quick loading and unloading of workpieces and improves work efficiency.

[0018] Optionally, the first clamping mechanism includes two first clamping plate assemblies arranged opposite to each other on the rear side of the first grinding plate; the first clamping plate assembly includes a first clamping plate movably arranged on the first grinding plate and a first bolt connecting the first clamping plate and the first grinding plate; the second clamping mechanism includes two second clamping plate assemblies arranged opposite to each other on the rear side of the second grinding plate; the second clamping plate assembly includes a second clamping plate movably arranged on the second grinding plate and a second bolt connecting the second clamping plate and the second grinding plate.

[0019] By adopting the above technical solution, when installing sandpaper, tightening the first and second bolts clamps the first and second clamps together, firmly fixing the sandpaper to the first and second sanding plates. This reduces the displacement of the sandpaper during sanding and facilitates the installation and removal of the sandpaper.

[0020] Optionally, the arc-shaped telescopic handle includes at least three handle units that are sequentially nested together; a damping sliding structure is provided between adjacent handle units; the damping sliding structure includes an arc-shaped groove formed on the outer handle unit for sliding the inner handle unit and a damping sleeve installed at the end of the inner handle unit and cooperating with the inner wall of the arc-shaped groove.

[0021] By adopting the above technical solution, the arc telescopic handle includes at least three handle units that are sequentially connected, so that the handle length can be flexibly adjusted according to the angle between the first grinding plate and the second grinding plate. The frictional engagement between the damping sleeve at the end of the handle unit and the inner wall of the arc-shaped groove can form a locking effect when the handle unit is extended or retracted to any position.

[0022] Optionally, one end of the arc-shaped telescopic handle is provided with a first mounting seat that mates with the first grinding plate, and the first mounting seat is fixed to the first grinding plate by bolts; the other end of the arc-shaped telescopic handle is provided with a second mounting seat that mates with the second grinding plate, and the second mounting seat is fixed to the second grinding plate by bolts.

[0023] By adopting the above technical solution, the arc handle can be fixed on the first grinding plate and the second grinding plate.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] The first and second sanding plates are connected by a hinge structure, which can be adjusted in angle, effectively handles the corners of the wall, and improves the flexibility of the tool and its adaptability to special wall shapes.

[0026] The support spring and the cooperating first and second tooth surfaces provided between the first and second hinge seats facilitate the adjustment and fixing of the angle of the first and second grinding plates; the first and second clamping mechanisms can fix the sandpaper to the front side of the first and second grinding plates, making it convenient to replace the sandpaper and ensuring the smooth progress of the grinding work.

[0027] The arc-shaped telescopic handle is retractable and has a damped sliding structure, which allows workers to adjust the length and operating force according to the actual situation. It is suitable for wall sanding in different locations and spaces, improving the convenience of operation. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a sandpaper polishing device in Example 1.

[0029] Figure 2 This is a schematic cross-sectional view of the hinged structure in Example 1.

[0030] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0031] Figure 4 This is a schematic cross-sectional view of the arc-shaped telescopic handle in Example 1.

[0032] Figure 5 This is a schematic diagram of the first clamping plate assembly in Embodiment 2.

[0033] Explanation of reference numerals in the attached drawings: 1. First grinding plate; 11. First elastic clamp; 121. First clamping plate; 122. First bolt; 2. Second grinding plate; 21. Second elastic clamp; 221. Second clamping plate; 222. Second bolt; 31. First hinge seat; 311. First through hole; 312. First locking hole; 313. First spring groove; 32. Second hinge seat; 321. Second through hole; 322. Second locking hole; 32 3. Second spring groove; 33. Rotating shaft; 331. First shaft; 3311. Locking stud; 3312. First locking disc; 33121. Drive groove; 332. Second shaft; 3321. Locking screw hole; 3322. Second locking disc; 341. First toothed surface; 342. Second toothed surface; 35. Support spring; 4. Arc-shaped telescopic handle; 41. Handle unit; 421. Arc-shaped slide groove; 422. Damping sleeve. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail. Example

[0035] This application discloses a sandpaper polishing device. (Refer to...) Figure 1 The sanding device includes a first sanding plate 1 and a second sanding plate 2, with a hinge structure between them. This hinge structure allows for relative rotation and connection. The angle between the first sanding plate 1 and the second sanding plate 2 can be adjusted according to the shape of the wall surface to facilitate sanding of corners. In this embodiment, the first sanding plate 1 and the second sanding plate 2 are square plates with identical dimensions.

[0036] Reference Figure 2 and Figure 3 The hinge structure includes a first hinge seat 31 fixed to the first grinding plate 1, a second hinge seat 32 fixed to the second grinding plate 2, and a rotating shaft 33 connecting the first hinge seat 31 and the second hinge seat 32. The first hinge seat 31 is integrally formed with the first grinding plate 1, and the second hinge seat 32 is integrally formed with the second grinding plate 2.

[0037] Reference Figure 2 and Figure 3The first hinge seat 31 has a first through hole 311 penetrating the upper and lower surfaces, and the second hinge seat 32 has a second through hole 321 penetrating the upper and lower surfaces. The rotating shaft 33 includes a first shaft member 331 that mates with the first through hole 311 and a second shaft member 332 that mates with the second through hole 321. A locking stud 3311 is provided at the end of the first shaft member 331 facing the second shaft member 332, and a locking screw hole 3321 for mates with the locking stud 3311 is provided at the end of the second shaft member 332 facing the first shaft member 331. The first shaft member 331 and the second shaft member 332 can be locked together by the engagement of the locking stud 3311 and the locking screw hole 3321.

[0038] Reference Figure 2 The end of the first shaft member 331 facing away from the second shaft member 332 is also provided with a first locking disc 3312 for pressing the first hinge seat 31. The first locking disc 3312 has a circular disc-shaped structure. The first hinge seat 31 has a first locking hole 312 for the first locking disc 3312 to be rotated, and the end face of the first locking disc 3312 is provided with a drive groove 33121. The drive groove 33121 is a hexagonal groove.

[0039] Reference Figure 2 The second shaft member 332 has a second locking disc 3322 at its end facing away from the first shaft member 331 for pressing against the second hinge seat 32. The second locking disc 3322 has a regular hexagonal cross-section. The second hinge seat 32 has a second locking hole 322 for accommodating the second locking disc 3322 and restricting its rotation. The cross-section of the second locking hole 322 is adapted to the cross-section of the second locking disc 3322.

[0040] Reference Figure 2 and Figure 3 A toothed surface structure is also provided between the first hinge seat 31 and the second hinge seat 32. The toothed surface structure includes a first toothed surface 341 disposed on the end face of the first hinge seat 31 and a second toothed surface 342 disposed on the end face of the second hinge seat 32 and cooperating with the first toothed surface 341.

[0041] Reference Figure 2 and Figure 3 During the unlocking process of the locking stud 3311 and the locking screw hole 3321, in order to enable the first tooth surface 341 and the second tooth surface 342 to automatically separate, a support spring 35 is also provided between the first hinge seat 31 and the second hinge seat 32. The end face of the first hinge seat 31 facing the second hinge seat 32 has a first spring groove 313 for arranging the support spring 35; the end face of the second hinge seat 32 facing the first hinge seat 31 has a second spring groove 323 for arranging the support spring 35.

[0042] Reference Figure 1The first sanding plate 1 is provided with a first clamping mechanism for fixing sandpaper to its front side, and the second sanding plate 2 is provided with a second clamping mechanism for fixing sandpaper to its front side. The first clamping mechanism includes two first elastic clamps 11 arranged opposite to each other on the rear side of the first sanding plate 1, with the opening directions of the two first elastic clamps 11 facing away from each other. The second clamping mechanism includes two second elastic clamps 21 arranged opposite to each other on the rear side of the second sanding plate 2, with the opening directions of the two second elastic clamps 21 facing away from each other. In this embodiment, both the first elastic clamp 11 and the second elastic clamp 21 are torsion spring type clamps.

[0043] Reference Figure 1 An arc-shaped telescopic handle 4 is also provided between the first grinding plate 1 and the second grinding plate 2. The arc-shaped telescopic handle 4 includes at least three handle units 41 that are nested together in sequence. In this embodiment, the arc-shaped telescopic handle 4 is provided with four layers of handle units 41 nested together in sequence, and the arc angle of each handle unit 41 is seventy-five degrees.

[0044] Reference Figure 1 and Figure 4 To achieve a locking effect between adjacent handle units 41, a damping sliding structure is provided between them. This damping sliding structure includes an arc-shaped groove 421 on the outer handle unit 41 for sliding of the inner handle unit 41, and a damping sleeve 422 installed at the end of the inner handle unit 41 and engaging with the inner wall of the arc-shaped groove 421. When the angle between the first grinding plate 1 and the second grinding plate 2 is adjusted, the arc-shaped telescopic handle 4, with multiple handle units 41 sleeved together, can be adjusted in accordance with the angle between the first grinding plate 1 and the second grinding plate 2. The frictional engagement between the damping sleeve 422 at the end of the handle unit 41 and the inner wall of the arc-shaped groove 421 creates a locking effect when the handle unit 41 is extended or retracted to any position.

[0045] Reference Figure 1 One end of the arc-shaped telescopic handle 4 is provided with a first mounting base 43 that mates with the first grinding plate 1. The first mounting base 43 is fixed to the first grinding plate 1 by screws. The other end of the arc-shaped telescopic handle 4 is provided with a second mounting base 44 that mates with the second grinding plate 2. The second mounting base 44 is fixed to the second grinding plate 2 by screws.

[0046] The implementation principle of the sandpaper sanding device in this embodiment is as follows: When sanding a wall surface using the sandpaper sanding device, firstly, two sandpapers are laid on the back sides of the first sanding plate 1 and the second sanding plate 2, respectively, and fixed by the first elastic clip 11 and the second elastic clip 21. Based on the angle between the wall surfaces, the first sanding plate 1 and the second sanding plate 2 are rotated through a hinge structure to adjust the included angle between them to accommodate the wall surface angle. The length of the arc-shaped operating handle is adjusted according to the angle between the first sanding plate 1 and the second sanding plate 2 to facilitate operation by the worker. Example

[0047] Compared with Example 1, this embodiment is identical to the sandpaper polishing device in Example 1, except for the differences between the first clamping mechanism and the second clamping mechanism in Example 1.

[0048] Reference Figure 5 The first clamping mechanism includes two first clamping plate assemblies arranged opposite to each other on the rear side of the first sanding plate 1. Each first clamping plate assembly includes a first clamping plate 121 movably arranged on the first sanding plate 1 and a first bolt 122 connecting the first clamping plate 121 and the first sanding plate 1. The second clamping mechanism includes two second clamping plate assemblies arranged opposite to each other on the rear side of the second sanding plate 2. Each second clamping plate assembly includes a second clamping plate 221 movably arranged on the second sanding plate 2 and a second bolt 222 connecting the second clamping plate 221 and the second sanding plate 2. When installing sandpaper, tightening the first bolt 122 and the second bolt 222 clamps the first clamping plate 121 and the second clamping plate 221, firmly fixing the sandpaper to the first sanding plate 1 and the second sanding plate 2. This reduces the displacement of the sandpaper during sanding and facilitates the installation and removal of the sandpaper.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sanding device, comprising: The system includes a first polishing plate (1) and a second polishing plate (2), with a hinge structure between the first polishing plate (1) and the second polishing plate (2). The hinge structure includes a first hinge seat (31) fixed to the first polishing plate (1), a second hinge seat (32) fixed to the second polishing plate (2), and a rotating shaft (33) connecting the first hinge seat (31) and the second hinge seat (32). The first hinge seat (31) has a first through hole (311) for arranging the rotating shaft (33). The second hinge seat (32) has a second through hole (321) for arranging the rotating shaft (33). The first polishing plate (1) is provided with a first clamping mechanism for fixing sandpaper to the front side, and the second polishing plate (2) is provided with a second clamping mechanism for fixing sandpaper to the front side. An arc-shaped telescopic handle (4) is also provided between the first polishing plate (1) and the second polishing plate (2).

2. The sanding device of claim 1, wherein The rotating shaft (33) includes a first shaft member (331) arranged in the first through hole (311) and a second shaft member (332) arranged in the second through hole (321); a locking stud (3311) is provided at the end of the first shaft member (331) facing the second shaft member (332), and a first locking disc (3312) for pressing the first hinge seat (31) is provided at the end of the first shaft member (331) facing the second shaft member (332); a locking screw hole (3321) for cooperating with the locking stud (3311) is provided at the end of the second shaft member (332) facing the first shaft member (331); and a second locking disc (3322) for pressing the second hinge seat (32) is provided at the end of the second shaft member (332) facing the first shaft member (331).

3. A sanding device according to claim 2, wherein The first hinge seat (31) has a first locking hole (312) for the first locking disc (3312) to be rotatably arranged; the end face of the first locking disc (3312) is provided with a drive groove (33121); the second hinge seat (32) has a second locking hole (322) for the second locking disc (3322) to be arranged and restricting the rotation of the second locking disc (3322).

4. The sanding device of claim 2, wherein, A toothed surface structure is also provided between the first hinge seat (31) and the second hinge seat (32); the toothed surface structure includes a first toothed surface (341) disposed on the end face of the first hinge seat (31) and a second toothed surface (342) disposed on the end face of the second hinge seat (32) and cooperating with the first toothed surface (341).

5. A sanding device according to claim 4, wherein A support spring (35) is also provided between the first hinge seat (31) and the second hinge seat (32); the end face of the first hinge seat (31) facing the second hinge seat (32) is provided with a first spring groove (313) for arranging the support spring (35); the end face of the second hinge seat (32) facing the first hinge seat (31) is provided with a second spring groove (323) for arranging the support spring (35).

6. The sanding device of claim 1, wherein, The first clamping mechanism includes two first elastic clamps (11) arranged opposite to each other on the rear side of the first grinding plate (1); the opening directions of the two first elastic clamps (11) are arranged in opposite directions; the second clamping mechanism includes two second elastic clamps (21) arranged opposite to each other on the rear side of the second grinding plate (2); the opening directions of the two second elastic clamps (21) are arranged in opposite directions.

7. The sanding device of claim 1, wherein, The first clamping mechanism includes two first clamping plate assemblies arranged opposite to each other on the rear side of the first grinding plate (1); the first clamping plate assembly includes a first clamping plate (121) movably arranged on the first grinding plate (1) and a first bolt (122) connecting the first clamping plate (121) and the first grinding plate (1); the second clamping mechanism includes two second clamping plate assemblies arranged opposite to each other on the rear side of the second grinding plate (2); the second clamping plate assembly includes a second clamping plate (221) movably arranged on the second grinding plate (2) and a second bolt (222) connecting the second clamping plate (221) and the second grinding plate (2).

8. The sanding device of claim 1, wherein, The arc-shaped telescopic handle (4) includes at least three handle units (41) that are connected in sequence; a damping sliding structure is provided between adjacent handle units (41); the damping sliding structure includes an arc-shaped groove (421) opened on the outer side of the handle unit (41) for sliding the inner side of the handle unit (41) and a damping sleeve (422) installed at the end of the inner side of the handle unit (41) and cooperating with the inner wall of the arc-shaped groove (421).

9. A sanding device according to claim 8, wherein, One end of the arc telescopic handle (4) is provided with a first mounting seat (43) that cooperates with the first grinding plate (1), and the first mounting seat (43) is fixed to the first grinding plate (1) by bolts; the other end of the arc telescopic handle (4) is provided with a second mounting seat (44) that cooperates with the second grinding plate (2), and the second mounting seat (44) is fixed to the second grinding plate (2) by bolts.

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