A large white wall corner polishing device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 肖云童
- Filing Date
- 2025-08-08
- Publication Date
- 2026-05-29
AI Technical Summary
Existing wall sanding equipment is difficult to effectively handle the corners and edges of walls, resulting in uneven sanding, which affects the appearance and the adhesion of paint or wallpaper. In addition, manual sanding is inconvenient and poses safety hazards.
A device for sanding the edges and corners of a white wall has been designed, including a handle, a combination plate, sandpaper, and a clamping component. Sanding is performed by the combination plate adhering to the wall surface. The handle is adjustable in length, and the clamping component fixes the sandpaper, adapting to different heights and positions.
It achieves efficient sanding of wall edges and corners, is easy to operate, improves safety, ensures that the sandpaper does not fall or shift, and enhances both sanding effect and safety.
Smart Images

Figure CN224295625U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building decoration tools, and in particular to a device for sanding the edges and corners of white walls. Background Technology
[0002] In the wall decoration process, sanding the whitewashed walls is a crucial step, affecting not only the wall's aesthetics but also the subsequent application of paint or wallpaper. However, most existing wall sanding equipment uses electric sanders. While these can efficiently handle sanding most areas of the wall, they often struggle to achieve ideal results when dealing with corners and edges due to limitations in shape and size. For example, in the confined spaces of whitewashed wall corners (such as inside and outside corners, and baseboard seams), electric sanders have difficulty effectively reaching these areas, leading to insufficient sanding and uneven sanding. This not only affects the overall appearance of the wall but may also impact the adhesion and lifespan of subsequent paint or wallpaper.
[0003] Currently, sanding wall edges and corners mainly relies on manual sanding. For higher edges and corners, additional tools such as ladders are often needed, which is not only inconvenient but also compromises safety. Therefore, we propose a user-friendly device for sanding the edges and corners of whitewashed walls. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for sanding the edges and corners of white walls.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A device for sanding the edges of a white wall includes a rectangular combination plate disposed at one end of a handle. The combination plate includes a U-shaped plate, a filling layer fixedly connected to one side of the U-shaped plate, and an anti-slip panel fixedly connected to one side of the filling layer.
[0007] Sandpaper is provided on one side of the composite plate;
[0008] One side of the U-shaped plate is a narrow side, and the other side of the U-shaped plate, which is opposite to the narrow side, is a wide side. The angle between the narrow side and the main board of the U-shaped plate is 90°, and the angle between the wide side and the main board of the U-shaped plate is <90°.
[0009] As a further improvement of this utility model: a connecting seat is fixedly connected to one side of the outer wall of the U-shaped plate, and a connecting shaft is rotatably connected to one side of the connecting seat.
[0010] As a further embodiment of this utility model: the handle includes an adjustable connecting rod, a handle disposed at the bottom end of the adjustable connecting rod, and a connector disposed at the top end of the adjustable connecting rod, wherein one end of the connector is rotatedly engaged with the outer wall of the connecting shaft via a rotating shaft.
[0011] As a further embodiment of this utility model: the adjustable connecting rod consists of an upper connecting post fixedly connected to one end of the connector, a lower connecting post fixedly connected to one side of the handle, and a sleeve;
[0012] One end of the upper connecting post and the lower connecting post are respectively threaded to the inner wall of the sleeve.
[0013] As a further improvement of this utility model, the outer circumferential wall of the sleeve is provided with anti-slip texture.
[0014] As a further embodiment of this utility model: at least two clamping components are provided on one side of the combined plate. The clamping components include two symmetrical clamping plates and an adjusting column rotatably connected to one side of one of the clamping plates. The outer wall of the adjusting column is provided on the inner wall of the other clamping plate.
[0015] As a further improvement of this utility model, anti-slip pads are fixedly connected to one side of each of the two clamping plates.
[0016] Compared with the prior art, this utility model provides a device for sanding the edges and corners of a large white wall surface, which has the following beneficial effects:
[0017] 1. This white wall corner sanding device has a rectangular combination plate with a handle at one end. When in use, one hand holds the handle and the other hand holds the adjustable connecting rod, so that the sandpaper is in contact with the white wall through the combination plate. By dragging the combination plate, the corners that the sanding machine cannot reach are sanded. It is easy to operate and does not affect personal safety.
[0018] 2. The white wall edge sanding device can adjust the extension of the upper and lower connecting columns in the sleeve according to actual needs to ensure that the combined panel can reach different height positions of the white wall edge.
[0019] 3. This white wall edge sanding device involves bending the two sides of the sandpaper and clamping it between the U-shaped plate and the filler layer. Then, the clamping plate is clipped onto the back side of the composite plate, and the adjusting column is manually rotated to gradually shorten the distance between the two clamping plates until they tightly clamp the two sides of the sandpaper through the U-shaped plate, thus firmly fixing the sandpaper. It is easy to disassemble and replace, and can effectively prevent the sandpaper from falling or shifting during operation. Attached Figure Description
[0020] Figure 1This is a rear view structural diagram of Embodiment 1 of the white wall edge sanding device proposed in this utility model;
[0021] Figure 2 This is a top view of Embodiment 1 of the white wall edge sanding device proposed in this utility model;
[0022] Figure 3 This is a rear view structural diagram of Embodiment 2 of the white wall edge sanding device proposed in this utility model;
[0023] Figure 4 This is a schematic diagram of the clamping component structure of Embodiment 2 of the white wall corner polishing device proposed in this utility model.
[0024] In the diagram: 1 U-shaped plate, 2 connecting seat, 201 connecting shaft, 3 connecting head, 4 sleeve, 5 lower connecting column, 501 upper connecting column, 6 handle, 7 anti-slip panel, 8 filling layer, 10 clamping plate, 1001 adjusting column, 1002 anti-slip pad. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] Example 1: A device for sanding the edges and corners of a large white wall, such as... Figure 1-2 As shown, the assembly includes a rectangular combination plate disposed at one end of the handle. The combination plate includes an irregularly shaped U-shaped plate 1, a filling layer 8 bonded to one side of the U-shaped plate 1, and an anti-slip panel 7 bonded to one side of the filling layer 8. Sandpaper [not shown in the figure] is bonded to one side of the combination plate.
[0028] Preferably, the U-shaped plate 1 can be made of stainless steel or other materials;
[0029] Furthermore, one side of the U-shaped plate 1 is a narrow side, and the other side of the U-shaped plate 1, which is positioned opposite to the narrow side, is a wide side. The angle between the narrow side and the main board of the U-shaped plate 1 (i.e., the middle board) is 90°, and the angle between the wide side and the main board of the U-shaped plate 1 (i.e., the middle board) is <90°.
[0030] The single-angle grinding is composed of the wide side of the U-shaped plate 1, the filling layer 8, and the anti-slip panel 7;
[0031] As an alternative, the size of the combination board is adjustable, and the angle between the wide side and the main board of the U-shaped board 1 (i.e., the middle board) is also adjustable.
[0032] Preferably, the filling layer 8 can be made of materials such as foam cotton, sponge, or rubber to prevent its edges from contacting the corners of the wall and causing damage.
[0033] Preferably, the anti-slip panel 7 has a Velcro hook side so that it can prevent the sandpaper from shifting when it comes into contact with the sandpaper;
[0034] Furthermore, a connecting seat 2 is fixed to one side of the outer wall of the U-shaped plate 1 by bolts, and a T-shaped connecting shaft 201 is rotatably connected to one side of the connecting seat 2;
[0035] Furthermore, the handle includes an adjustable connecting rod, a handle 6 disposed at the bottom end of the adjustable connecting rod, and a connector 3 disposed at the top end of the adjustable connecting rod, wherein one end of the connector 3 is rotatably engaged with the outer wall of the connecting shaft 201 via a rotating shaft.
[0036] Place sandpaper on the flat surface of the panel, leaving some excess on one side of the single-angle sanding line. Press the sandpaper along the single-angle sanding line and fold it back to create a sharp angle at the single-angle sanding point. When using, press the single-angle sanding point tightly against the corner of the wall, then drag the panel using the handle to finish the corner of the white wall. It's easy to operate and does not compromise personal safety.
[0037] Preferably, the adjustable connecting rod consists of an upper connecting post 501 fixed to one end of the connector 3 by bolts, a lower connecting post 5 fixed to one side of the handle 6 by bolts, and a sleeve 4, wherein one end of the upper connecting post 501 and the lower connecting post 5 are respectively threaded to the inner wall of the sleeve 4.
[0038] Furthermore, the outer circumference of the sleeve 4 is engraved with anti-slip texture; this allows for easy adjustment of the length of the adjustable connecting rod according to actual conditions.
[0039] Working principle: Adjust the extension of the upper connecting column 501 and the lower connecting column 5 within the sleeve 4 according to actual needs to ensure that the combined panel can reach different height positions at the corners of the white wall. Cover the surface of the combined panel with sandpaper, leaving some excess on one side of the single-angle sanding line. Press the sandpaper along the single-angle sanding line and fold it back to make the angle formed by the sandpaper at the single-angle sanding point sharp. When using, fit the single-angle sanding point tightly against the corner of the wall, and then drag the combined panel with the handle to process the corners of the white wall. The operation is convenient and does not affect personal safety.
[0040] Example 2: A device for sanding the edges and corners of a large white wall, such as... Figure 3-4 As shown, in order to prevent the sandpaper from falling or shifting, this embodiment makes the following improvements based on embodiment 1: at least two clamping components for clamping the sandpaper are provided on one side of the combination plate. The clamping components include two symmetrical clamping plates 10 and an adjusting column 1001 rotatably connected to one side of one of the clamping plates 10. The outer wall of the adjusting column 1001 is threadedly connected to the inner wall of the other clamping plate 10.
[0041] Preferably, anti-slip pads 1002 are adhered to one side of each of the two clamping plates 10 (which is also the side that fits against the combined plate).
[0042] Working principle: Cover the sandpaper on the flat surface of the combined plate, and fold one side of it to clamp it in the gap between the U-shaped plate 1 and the anti-slip pad 1002. Then, clamp the clamping plate 10 on the back side of the combined plate and manually rotate the adjusting column 1001 to gradually shorten the distance between the two clamping plates 10 until they tightly clamp one side of the sandpaper through the U-shaped plate 1, thereby achieving a firm fixation of the sandpaper. Disassembly and replacement are relatively convenient, and it can effectively prevent the sandpaper from falling or shifting during operation.
[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A device for sanding the edges and corners of a large white wall, comprising a rectangular assembly plate disposed at one end of a handle, characterized in that, The combined panel includes a U-shaped panel (1), a filling layer (8) fixedly connected to one side of the U-shaped panel (1), and an anti-slip panel (7) fixedly connected to one side of the filling layer (8). Sandpaper is provided on one side of the composite plate; One side of the U-shaped plate (1) is a narrow side, and the other side of the U-shaped plate (1) which is opposite to the narrow side is a wide side.
2. The device for sanding the edges and corners of a large white wall surface according to claim 1, characterized in that, The angle between the narrow side and the main board of the U-shaped plate (1) is 90°, and the angle between the wide side and the main board of the U-shaped plate (1) is >90°.
3. The device for sanding the edges and corners of a large white wall surface according to claim 1, characterized in that, A connecting seat (2) is fixedly connected to one side of the outer wall of the U-shaped plate (1), and a connecting shaft (201) is rotatably connected to one side of the connecting seat (2).
4. The device for sanding the edges and corners of a large white wall surface according to claim 3, characterized in that, The handle includes an adjustable connecting rod, a handle (6) at the bottom of the adjustable connecting rod, and a connector (3) at the top of the adjustable connecting rod. One end of the connector (3) is rotated with the outer wall of the connecting shaft (201) via a rotating shaft.
5. A device for sanding the edges and corners of a large white wall surface according to claim 4, characterized in that, The adjustable connecting rod consists of an upper connecting post (501) fixedly connected to one end of the connector (3), a lower connecting post (5) fixedly connected to one side of the handle (6), and a sleeve (4); One end of the upper connecting post (501) and the lower connecting post (5) are respectively threaded to the inner wall of the sleeve (4).
6. The device for sanding the edges and corners of a large white wall surface according to claim 5, characterized in that, The outer circumferential wall of the sleeve (4) is provided with anti-slip texture.
7. The device for sanding the edges and corners of a large white wall surface according to claim 1, characterized in that, The combination plate has at least two clamping components on one side. The clamping components include two symmetrical clamping plates (10) and an adjusting column (1001) rotatably connected to one side of one of the clamping plates (10). The outer wall of the adjusting column (1001) is disposed on the inner wall of the other clamping plate (10).
8. A device for sanding the edges and corners of a large white wall surface according to claim 7, characterized in that, Anti-slip pads (1002) are fixedly connected to the corresponding side of the two clamping plates (10).