Polisher with adjustable angle

Abstract

The invention provides an angle-adjustable polisher, and belongs to the technical field of polishing equipment. The polisher comprises a base plate, a handle is installed on the base plate, the base plate comprises a first plate body and a second plate body which are hinged, a torsional spring is further arranged between the first plate body and the second plate body, one extending section of the torsional spring abuts against the first plate body, and the other extending section of the torsional spring abuts against the second plate body. The angle between the two plate bodies of the polisher can be changed along with the included angle between the wall surfaces, the polishing angle is adjusted according to needs, and the adaptability is well improved.

Description

Technical Field

[0001] This invention belongs to the field of polishing equipment technology, and relates to an adjustable angle polisher. Background Technology

[0002] A sandpaper holder is a tool used to sand the surface of a wall. When using it, fix the sandpaper to the bottom of the sandpaper holder and sand it. For example, cut the sandpaper to a suitable length and then fix the two sides of the sandpaper to the two ends of the sandpaper holder.

[0003] Patent application number 202421954550.2 discloses a sandpaper holder, which includes a base plate with two or more mounting seats. Each mounting seat has a clamping element and a locking structure. The clamping element includes a connecting rod with a pressure block mounted on it. The connecting rod can be locked into the locking structure, causing the pressure block to abut against the base plate. In existing sandpaper holders, some base plates include two flat plates with an included angle. After sandpaper is installed, it can sand walls with an included angle. However, the angle (inner angle) between the two flat plates is fixed, making it difficult to adapt to walls with different angles. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides an adjustable-angle polisher. The technical problem this invention aims to solve is: how to adjust the angle of the substrate.

[0005] The objective of this invention can be achieved through the following technical solutions: An adjustable angle grinder includes a base plate on which a handle is mounted. The base plate includes a first plate and a second plate that are hinged together. A torsion spring is also provided between the first plate and the second plate. One extension of the torsion spring abuts against the first plate and the other extension of the torsion spring abuts against the second plate.

[0006] In this sander, sandpaper is installed at the bottom of plates one and two. The operator then holds the handle to sand the wall. The two extensions of the torsion spring rest against plates one and two respectively, spreading the two plates apart. At this point, plates one and two have a large angle. When sanding a wall surface with two opposing angles, plates one and two are placed against one wall surface, bringing them closer together (at this time, the torsion spring is gradually under torsion). The angle between plates one and two is adjusted to match the angle between the two walls, allowing for effective sanding of both surfaces. After sanding, plates one and two return to their original positions under the elastic force of the torsion spring.

[0007] The angle between the two plates of this sander can be changed according to the angle between the walls, and the sanding angle can be adjusted as needed (e.g., 65°-115°), which greatly improves its adaptability.

[0008] In the aforementioned adjustable angle grinder, the bottom of the two ends of the handle is connected to a connecting rod 2, and a rotating shaft is passed through the connecting rod 2. The rotating shaft extends along the length direction of the connecting rod 2. The plate 1 has several bosses 1, and the plate 2 has several bosses 2. The rotating shaft passes through the bosses 1 and bosses 2, and the bosses 1 and bosses 2 can rotate relative to the rotating shaft.

[0009] In this structure, the rotating shaft connects the handle, plate one, and plate two together. The rotating shaft is rotatably connected to boss one and boss two, so that plate one and plate two are hinged together.

[0010] In the aforementioned adjustable angle grinder, the top of the connecting rod 2 is provided with several receiving grooves, which extend along the length direction of the connecting rod 2. The boss 1 extends along the length direction of the plate 1, and the boss 2 extends along the length direction of the plate 2. Each boss 1 and the corresponding boss 2 form a group, and the boss 1 and boss 2 in each group are respectively located in the corresponding receiving groove.

[0011] Each receiving slot is connected to a boss one and a boss two. The rotating shaft passes through the receiving slot and is mounted on boss one and boss two. This structure allows boss one and boss two to be hinged together and avoids interference with connecting rod two when boss one and boss two rotate, so that boss one and boss two can rotate smoothly.

[0012] In the aforementioned adjustable angle grinder, the top of the connecting rod two is provided with a mounting groove, and the torsion spring is sleeved on the rotating shaft and located in the mounting groove.

[0013] The torsion spring is sleeved on the rotating shaft and located in the mounting groove of the connecting rod 2. The torsion spring is not easy to fall off after installation. The structure is stable and compact.

[0014] In the aforementioned adjustable angle grinder, the bottom of the connecting rod two has a protrusion, which is located between the inner ends of plate one and plate two and extends outward, and the protrusion extends along the length direction of the connecting rod two.

[0015] In the aforementioned adjustable angle grinder, the first plate has a connecting block 1 arranged opposite to each other, and the second plate has a connecting block 2 arranged opposite to each other. The first connecting block is provided with an arc-shaped guide groove 1, and the second connecting block is provided with an arc-shaped guide groove 2. A connecting rod 1 is installed on one end and the other end of the handle, respectively. One connecting rod 1 passes through one guide groove 1 and one guide groove 2, and the other connecting rod 1 passes through another guide groove 1 and another guide groove 2. The outer end of the connecting rod 1 is threaded with a nut.

[0016] The nut acts as a limit to prevent connecting block one and connecting block two from falling off the connecting rod. Guide groove one and guide groove two, together with the corresponding connecting rod one, form a guiding structure. During the relative rotation of plate one and plate two, guide groove one and guide groove two slide along connecting rod one, which greatly improves the stability of plate one and plate two during rotation.

[0017] In the aforementioned adjustable angle grinder, a knob is fitted onto the nut, the knob has several flanges connected in sequence, the flanges forming an inner cavity, and the nut is located in the inner cavity.

[0018] The knob is fitted and fixed to the nut, which makes it easier for the operator to turn the nut and improves the ease of assembly and disassembly.

[0019] In the aforementioned adjustable-angle polisher, the knob is made of plastic material.

[0020] The plastic knobs are more flexible, making it more comfortable for operators to turn the nuts.

[0021] In the aforementioned adjustable angle polisher, the included angle between plate one and plate two is 65°-115°.

[0022] Compared with the prior art, the advantages of the present invention are as follows: the angle between the two plates of this grinder can be changed according to the included angle between the walls, and the grinding angle can be adjusted as needed, which greatly improves adaptability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this polisher; Figure 2 This is a structural schematic diagram of plate one; Figure 3 This is a structural schematic diagram of plate two; Figure 4 This is a schematic diagram of connecting rod two being connected to the handle; Figure 5 This is a schematic diagram of the knob's structure.

[0024] In the diagram: 1. Base plate, 2. Handle, 3. Plate body one, 4. Plate body two, 5. Torsion spring, 6. Connecting rod two, 61. Protrusion, 7. Rotating shaft, 8. Boss one, 9. Boss two, 10. Receiving groove, 11. Mounting groove, 12. Connecting block one, 13. Connecting block two, 14. Guide groove one, 15. Guide groove two, 16. Connecting rod one, 17. Nut, 18. Knob, 19. Flanged edge, 20. Inner cavity. Detailed Implementation

[0025] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0026] like Figure 1 As shown, the polisher includes a base plate 1, on which a handle 2 is mounted. The base plate 1 includes a first plate 3 and a second plate 4 that are hinged together. A torsion spring 5 is also provided between the first plate 3 and the second plate 4. One protruding part of the torsion spring 5 abuts against the first plate 3, and the other protruding part of the torsion spring 5 abuts against the second plate 4.

[0027] In this sander, sandpaper is installed at the bottom of plates 3 and 4. The operator then holds handle 2 to sand the wall. The two extended sections of torsion spring 5 rest against plates 3 and 4 respectively, spreading the two plates apart. At this point, the angle between plates 3 and 4 is relatively large. When sanding a wall surface with two opposing angles, plates 3 and 4 are positioned against one wall surface, bringing them closer together (at this time, torsion spring 5 gradually becomes twisted). The angle between plates 3 and 4 is adjusted to match the angle between the two walls, allowing for effective sanding of both surfaces. After sanding, plates 3 and 4 return to their original positions under the elastic force of torsion spring 5.

[0028] The angle between the two plates of this sander can be changed according to the angle between the walls, and the sanding angle can be adjusted as needed, which greatly improves its adaptability.

[0029] As one embodiment, the included angle between plate 3 and plate 4 is 65°-115°.

[0030] like Figure 1-4 As shown, in this embodiment, the bottom of the two ends of the handle 2 is connected to a connecting rod 2 6, and a rotating shaft 7 is passed through the connecting rod 2 6. The rotating shaft 7 extends along the length direction of the connecting rod 2 6. The plate 1 3 has a plurality of bosses 1 8, and the plate 2 4 has a plurality of bosses 2 9. The rotating shaft 7 passes through the bosses 1 8 and bosses 2 9, and the bosses 1 8 and bosses 2 9 can rotate relative to the rotating shaft 7.

[0031] In this structure, the rotating shaft 7 connects the handle 2, plate 3 and plate 4 together, and the plate 3 and plate 4 are hinged together by the rotating shaft 7 through the boss 8 and the boss 9.

[0032] like Figure 1-3 As shown, in this embodiment, the top of the connecting rod 2 6 is provided with several receiving grooves 10. The receiving grooves 10 extend along the length direction of the connecting rod 2 6. The boss 1 8 extends along the length direction of the plate 1 3, and the boss 2 9 extends along the length direction of the plate 2 4. Each boss 1 8 and the corresponding boss 2 9 form a group. The boss 1 8 and the boss 2 9 in each group are located in the corresponding receiving grooves 10.

[0033] Each receiving groove 10 is connected to a boss 8 and a boss 9. The rotating shaft 7 passes through the receiving groove 10 and is mounted on the boss 8 and the boss 9. This structure allows the boss 8 and the boss 9 to be hinged together and avoids interference with the connecting rod 6 when the boss 8 and the boss 9 rotate, so that the boss 8 and the boss 9 can rotate smoothly.

[0034] like Figure 4 As shown, in this embodiment, the top of the connecting rod 6 is provided with a mounting groove 11, and the torsion spring 5 is sleeved on the rotating shaft 7 and located in the mounting groove 11.

[0035] The torsion spring 5 is sleeved on the rotating shaft 7 and located in the mounting groove 11 of the connecting rod 6. The torsion spring 5 is not easy to fall off after installation. The structure is stable and compact.

[0036] like Figure 1 and 4 As shown, in this embodiment, the bottom of the connecting rod 6 has a protrusion 61, which is located between the inner ends of the plate 3 and the plate 4 and extends outward. The protrusion 61 extends along the length of the connecting rod 6.

[0037] The protrusion 61 on the connecting rod 2 extends outward. When the plate 1 3 and the plate 2 4 are sanding the two walls, the protrusion 61 can push the sandpaper out, so that the sandpaper can make full contact with the joint of the two walls. The sandpaper can sand the joint of the two walls well, avoiding the joint of the two walls (that is, the deepest part of the inside corner) from not being sanded and affecting the sanding effect.

[0038] like Figure 1-4 As shown, in this embodiment, the plate 3 has a connecting block 12 arranged opposite to each other, and the plate 4 has a connecting block 13 arranged opposite to each other. The connecting block 12 is provided with an arc-shaped guide groove 14, and the connecting block 13 is provided with an arc-shaped guide groove 15. A connecting rod 16 is installed on one end and the other end of the handle 2. One connecting rod 16 passes through one guide groove 14 and one guide groove 15, and the other connecting rod 16 passes through another guide groove 14 and another guide groove 15. The outer end of the connecting rod 16 is threaded with a nut 17.

[0039] Nut 17 serves as a limit to prevent connecting block 12 and connecting block 2 13 from falling off the connecting rod. Guide groove 14 and guide groove 2 15, together with the corresponding connecting rod 16, form a guiding structure. During the relative rotation of plate 3 and plate 2 4, guide groove 14 and guide groove 2 15 slide along connecting rod 16, which greatly improves the stability of plate 3 and plate 2 4 during rotation.

[0040] Guide groove 14 and guide groove 2 15 also serve to determine the size of the inside angle: when the inner ends of guide groove 14 and guide groove 2 15 abut against connecting rod 16, the angle between plate 3 and plate 2 4 is the largest; when the outer ends of guide groove 14 and guide groove 2 15 abut against connecting rod 16, the angle between plate 3 and plate 2 4 is the smallest.

[0041] like Figure 1 and 5 As shown, in this embodiment, a knob 18 is fitted on the nut 17. The knob 18 has several flanges 19 connected in sequence. The flanges 19 form an inner cavity 20, and the nut 17 is located in the inner cavity 20.

[0042] The knob 18 is fitted and fixed on the nut 17, which makes it easier for the operator to rotate the nut 17 and improves the ease of disassembly and assembly.

[0043] As one embodiment, the knob 18 is made of plastic. The plastic material makes the knob 18 more flexible, providing a more comfortable experience for the operator when rotating the nut 17. The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An adjustable-angle polisher, the polisher comprising a base plate (1) on which a handle (2) is mounted, characterized in that, The substrate (1) includes a first plate (3) and a second plate (4) that are hinged together. A torsion spring (5) is also provided between the first plate (3) and the second plate (4). One extension of the torsion spring (5) abuts against the first plate (3), and the other extension of the torsion spring (5) abuts against the second plate (4).

2. The adjustable-angle polisher according to claim 1, characterized in that, The bottom of the two ends of the handle (2) is connected to the connecting rod two (6), and the connecting rod two (6) is provided with a rotating shaft (7). The rotating shaft (7) extends along the length direction of the connecting rod two (6). The plate one (3) has a number of bosses one (8), and the plate two (4) has a number of bosses two (9). The rotating shaft (7) is provided on the bosses one (8) and bosses two (9), and the bosses one (8) and bosses two (9) can rotate relative to the rotating shaft (7).

3. The adjustable-angle polisher according to claim 2, characterized in that, The top of the connecting rod 2 (6) is provided with several receiving grooves (10). The receiving grooves (10) extend along the length direction of the connecting rod 2 (6). The boss 1 (8) extends along the length direction of the plate 1 (3). The boss 2 (9) extends along the length direction of the plate 2 (4). Each boss 1 (8) and the corresponding boss 2 (9) form a group. The boss 1 (8) and boss 2 (9) in each group are located in the corresponding receiving grooves (10).

4. The adjustable-angle polisher according to claim 2, characterized in that, The top of the connecting rod 2 (6) is provided with a mounting groove (11), and the torsion spring (5) is sleeved on the rotating shaft (7) and located in the mounting groove (11).

5. The adjustable-angle polisher according to claim 2, characterized in that, The bottom of the connecting rod 2 (6) has a protrusion (61), which is located between the inner ends of the plate 1 (3) and the plate 2 (4) and extends outward. The protrusion (61) extends along the length of the connecting rod 2 (6).

6. An adjustable-angle polisher according to claim 1, 2, 3, 4, or 5, characterized in that, The first plate (3) has a connecting block (12) arranged opposite to each other, and the second plate (4) has a connecting block (13) arranged opposite to each other. The first connecting block (12) has an arc-shaped guide groove (14) respectively, and the second connecting block (13) has an arc-shaped guide groove (15) respectively. The handle (2) has a connecting rod (16) installed on one end and the other end respectively. One connecting rod (16) passes through one guide groove (14) and one guide groove (15), and the other connecting rod (16) passes through another guide groove (14) and another guide groove (15). The outer end of the connecting rod (16) is threaded with a nut (17).

7. The adjustable-angle polisher according to claim 1, characterized in that, A knob (18) is fitted on the nut (17). The knob (18) has several flanges (19) connected in sequence. The flanges (19) form an inner cavity (20). The nut (17) is located in the inner cavity (20).

8. The adjustable-angle polisher according to claim 7, characterized in that, The knob (18) is made of plastic material.

9. An adjustable-angle polisher according to claim 1, 2, 3, 4, or 5, characterized in that, The included angle between plate one (3) and plate two (4) is 65°-115°.

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