A sandpaper holder facilitating replacement of sandpaper

Abstract

The utility model relates to a sandpaper frame convenient to change sandpaper, the utility model discloses the sandpaper pasting board and the pressing plate are connected through the pivot rotation, and the both ends of pressing plate and the both ends of sandpaper pasting board correspond and cooperate, form two clamping openings, and the both ends of clamping opening can be opened through the rotation of pressing plate, and the both ends of sandpaper are placed to the clamping opening conveniently, and the reverse rotation of pressing plate can close two clamping openings and clamp the sandpaper tightly. And the locking and fixing of the cooperation of ratchet pawl locking piece and ratchet plate is completed between the pressing plate and sandpaper pasting board, and in the use process, the pressing force that handle exerts to the pressing plate, the one-way locking action of cooperation ratchet pawl locking piece and ratchet plate make the pressing plate clamp the sandpaper more and more tightly, and the pressing plate will not make reverse rotation and loosen, thereby guaranteeing the firmness and stability of clamping. When changing sandpaper, just through moving the poking board, makes the ratchet pawl tooth and ratchet plate separate, and the pressing plate can be rotated and two clamping openings are opened, and the dismounting replacement of sandpaper is more convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of wall sanding tools, specifically a sandpaper holder that facilitates sandpaper replacement. Background Technology

[0002] A sandpaper holder is a tool used for polishing product surfaces. To use it, sandpaper is fixed to the bottom of the holder. Since sandpaper is easily worn, it needs to be replaced. Most existing sandpaper holders use a clamping plate structure to hold the sandpaper in place. These structures often use screws to tighten the clamping plate, requiring the screws to be removed, the new sandpaper inserted, and then tightened again – a rather cumbersome process. Another type uses a clip structure, with two clips at each end of the holder to hold and secure the sandpaper. This structure is convenient, but the clamping surface is small, and the clamping force decreases over time, resulting in poor gripping and the sandpaper easily loosening or falling off, making it inconvenient to use. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model discloses a sandpaper holder that facilitates sandpaper replacement. The technical solution adopted is that the front end of the sandpaper attachment plate is a front lower clamp and the rear end is a rear upper clamp. A rotating seat is fixedly connected to the middle of one end of the upper surface of the sandpaper attachment plate, and a ratchet plate is fixedly connected to the middle of the other end. A pressure plate is rotatably connected to the rotating seat via a rotating shaft. A handle is fixedly connected to the upper part of the pressure plate. The front end of the pressure plate is a front upper clamp and the rear end is a rear lower clamp. An insertion groove is opened on the lower surface of the front part of the pressure plate at a position corresponding to the ratchet plate. The ratchet plate... The device should be inserted into the insertion slot. A shaft hole is provided on the lower rear surface of the pressure plate. The rotating shaft rotatably passes through the shaft hole. A pawl locking element is rotatably installed on the top of the insertion slot. The upper end of the pawl locking element extends from the upper part of the pressure plate, and an elastic element, either a spring or a sheet, is installed between its lower back and the side wall of the insertion slot. One end of the elastic element presses against the side wall of the insertion slot, and the other end presses against the back of the pawl locking element, thereby applying a spring force towards the ratchet plate. The elastic element elastically presses the pawl locking element against the ratchet plate. The ratchet plate is an arc-shaped plate, and its center is collinear with the axis of the rotating shaft, so that when the pressure plate rotates around the rotating shaft, the ratchet plate can be inserted into the insertion slot and maintain effective contact with the pawl locking element.

[0004] In a preferred embodiment of this utility model, the front lower chuck corresponds to and is located below the front upper chuck, the rear upper chuck corresponds to and is located above the rear lower chuck, the sandpaper is attached to the lower surface of the sandpaper attachment plate, and one end of the sandpaper is clamped between the front lower chuck and the front upper chuck, and the other end is clamped between the rear upper chuck and the rear lower chuck.

[0005] As a preferred embodiment of this utility model, the pawl locking member includes a pawl arm, the upper end of which is rotatably fitted in the insertion groove, and the lower end of which has pawl teeth. A toggle plate is fixedly connected to the upper end of the pawl arm, the toggle plate extends from the upper part of the pressure plate and is located below the handle, and limit baffles are fixedly connected to both ends of the pawl teeth. The pawl teeth are pressed and locked with the ratchet teeth on the ratchet plate, and the limit baffles are slidably locked on both sides of the ratchet plate.

[0006] The beneficial effects of this utility model are as follows: This utility model connects the sandpaper attachment plate and the pressure plate via a rotating shaft. The two ends of the pressure plate and the two ends of the sandpaper attachment plate correspond to each other, forming two clamping openings. Rotating the pressure plate opens these openings, allowing the sandpaper to be placed into them. Reversing the rotation of the pressure plate closes the two openings, clamping the sandpaper tightly. The pressure plate and the sandpaper attachment plate are locked together by a pawl lock and a ratchet plate. During use, the pressure applied to the pressure plate by the handle, combined with the one-way locking action of the pawl lock and ratchet plate, ensures that the pressure plate clamps the sandpaper more tightly, preventing it from loosening due to reverse rotation, thus guaranteeing the firmness and stability of the clamping. When the sandpaper needs to be replaced, simply move the actuating plate on the pawl lock to disengage the pawl teeth from the ratchet plate, allowing the pressure plate to be rotated to open the two clamping openings, making the removal and replacement of the sandpaper more convenient. This sandpaper holder has a simple overall structure, is easy to operate, allows for convenient sandpaper replacement, and securely holds and fixes the sandpaper. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0008] Figure 2 This is a half-sectional view of the overall structure of this utility model;

[0009] Figure 3 This is a half-sectional view of the pressure plate of this utility model in the rotated and opened state;

[0010] Figure 4 This is a schematic diagram of the overall disassembled state of this utility model.

[0011] In the diagram: 1. Sandpaper attachment plate, 101. Front lower chuck, 102. Rear upper chuck, 2. Rotating seat, 201. Rotating shaft, 3. Pressure plate, 301. Front upper chuck, 302. Rear lower chuck, 303. Insertion slot, 304. Shaft hole, 4. Handle, 5. Pawl locking component, 501. Pawl arm, 502. Actuating plate, 503. Pawl tooth, 504. Limiting baffle, 6. Elastic component, 7. Racket plate, 8. Sandpaper. Detailed Implementation

[0012] Example 1

[0013] like Figures 1 to 4 As shown, this utility model is a sandpaper holder for easy sandpaper replacement. The front end of the sandpaper attachment plate 1 is a front lower clamp 101, and the rear end is a rear upper clamp 102. A rotating seat 2 is fixedly connected to the middle of one end of the upper surface of the sandpaper attachment plate 1, and a ratchet plate 7 is fixedly connected to the middle of the other end. A pressure plate 3 is rotatably connected to the rotating seat 2 via a rotating shaft 201. A shaft hole 304 is opened on the lower rear surface of the pressure plate 3, through which the rotating shaft 201 rotatably passes. A hand is fixedly connected to the upper part of the pressure plate 3. The handle 4 has a front upper clamp 301 at its front end and a rear lower clamp 302 at its rear end. The front lower clamp 101 corresponds to and is located below the front upper clamp 301, and the rear upper clamp 102 corresponds to and is located above the rear lower clamp 302. Sandpaper 8 is attached to the lower surface of the sandpaper attachment plate 1, with one end of the sandpaper 8 clamped between the front lower clamp 101 and the front upper clamp 301, and the other end clamped between the rear upper clamp 102 and the rear lower clamp 302. By gripping the handle 4 and pressing down on the pressure plate 3, the front upper clamp 301 moves downward and presses against the front lower clamp 101, while the rear lower clamp 302 moves upward and presses against the rear upper clamp 102, thereby clamping both ends of the sandpaper 8.

[0014] The lower front surface of the pressure plate 3 is provided with an insertion groove 303 corresponding to the position of the ratchet plate 7. The ratchet plate 7 is inserted into the insertion groove 303. A pawl locking member 5 is rotatably installed on the top of the insertion groove 303. The pawl locking member 5 includes a pawl arm 501. The upper end of the pawl arm 501 is rotatably installed in the insertion groove 303, and the lower end has pawl teeth 503. A toggle plate 502 is fixedly connected to the upper end of the pawl arm 501. The toggle plate 502 extends from the upper part of the pressure plate 3 and is located below the handle 4. Limiting baffles 504 are fixedly connected to both ends of the pawl teeth 503. The pawl teeth 503 and the ratchet teeth on the ratchet plate 7 are pressed and locked. The limiting baffles 504 are slidably locked on both sides of the ratchet plate 7. The pawl locking member 5 and the ratchet plate 7 are kept in correspondence by the limiting baffles 504. An elastic element 6 is installed between the lower back of the pawl locking member 5 and the side wall of the insertion slot 303. The elastic element 6 is a sheet or spring, with one end pressing against the side wall of the insertion slot 303 and the other end pressing against the back of the pawl locking member 5, thereby applying a spring force to the pawl locking member 5 in the direction of the ratchet plate 7. The elastic element 6 elastically presses the pawl locking member 5 against the ratchet plate 7. The ratchet plate 7 is an arc-shaped plate, and its center is collinear with the axis of the rotating shaft 201, so that when the pressure plate 3 rotates around the rotating shaft 201, the ratchet plate 7 can be inserted into the insertion slot 303. Moreover, the movement trajectory of the pawl locking member 5 as the pressure plate 3 rotates is arc-shaped. The arc-shaped structure of the ratchet plate 7 matches the movement trajectory of the pawl locking member 5, so that the pawl locking member 5 can move against the surface of the ratchet plate 7 and maintain effective contact.

[0015] During the clamping process of the pressure plate 3 clamping the sandpaper 8, the pawl locking part 5 slides on the surface of the ratchet plate 7. The elastic force of the elastic element 6 keeps the pawl teeth 503 engaged with the ratchet teeth on the ratchet plate 7, so that the pawl locking part 5 can only move downward along the ratchet plate 7 and cannot move in the opposite direction. This ensures that the pressure plate 3 can only press against the sandpaper attachment plate 1 and cannot open in the opposite direction, realizing pressing clamping and synchronous locking, and ensuring the stability of the clamping fixation. If it is necessary to open the pressure plate 3 to replace the sandpaper 8, lift the actuating plate 502 upward, thereby driving the pawl arm 501 to rotate, so that the pawl teeth 503 disengage from the ratchet plate 7. Then, the pressure plate 3 can be rotated in the opposite direction to release the sandpaper 8 and release the actuating plate 502. Under the elastic force of the elastic element 6, the pawl arm 501 is pressed against the ratchet plate 7, and the pawl teeth 503 are engaged with the ratchet teeth on the ratchet plate 7. After replacing the new sandpaper 8, press the pressure plate 3 again to clamp.

[0016] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "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. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0018] Components not described in detail in this article are existing technologies.

[0019] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A sandpaper holder for easy sandpaper replacement, characterized in that, The system includes a sandpaper attachment plate (1), on which a rotating seat (2) is fixedly connected at one end of the upper surface of the sandpaper attachment plate (1), and a ratchet plate (7) is fixedly connected at the other end. A pressure plate (3) is rotatably connected to the rotating seat (2) via a rotating shaft (201). A handle (4) is fixedly connected to the upper part of the pressure plate (3). The front end of the pressure plate (3) is a front upper chuck (301), and the rear end is a rear lower chuck (302). An insertion groove (303) is opened on the lower front surface of the pressure plate (3) at a position corresponding to the ratchet plate (7). 7) The corresponding insertion is made into the insertion slot (303). The lower rear surface of the pressure plate (3) is provided with a shaft hole (304). The rotating shaft (201) rotates through the shaft hole (304). The top of the insertion slot (303) is rotatably fitted with a pawl locking member (5). The upper end of the pawl locking member (5) extends from the upper part of the pressure plate (3). The lower end of the back is fitted with an elastic member (6) between the back of the pawl locking member (5) and the side wall of the insertion slot (303). The elastic member (6) elastically presses the pawl locking member (5) onto the ratchet plate (7).

2. The sandpaper holder for easy sandpaper replacement according to claim 1, characterized in that: The front end of the sandpaper attachment plate (1) is a front lower clamp (101), and the rear end is a rear upper clamp (102).

3. A sandpaper holder for easy sandpaper replacement according to claim 2, characterized in that: The lower front chuck (101) corresponds to and is located below the upper front chuck (301), and the upper rear chuck (102) corresponds to and is located above the lower rear chuck (302). Sandpaper (8) is attached to the lower surface of the sandpaper attachment plate (1), with one end of the sandpaper (8) sandwiched between the lower front chuck (101) and the upper front chuck (301), and the other end sandwiched between the upper rear chuck (102) and the lower rear chuck (302).

4. A sandpaper holder for easy sandpaper replacement according to claim 1, characterized in that: The pawl locking component (5) includes a pawl arm (501), the upper end of which is rotatably fitted in the insertion groove (303), and the lower end side is provided with pawl teeth (503). The upper end side of the pawl arm (501) is fixedly connected to a toggle plate (502), the toggle plate (502) extends from the upper part of the pressure plate (3) and is located below the handle (4). The two ends of the pawl teeth (503) are fixedly connected to limit baffles (504), the pawl teeth (503) are pressed and snapped with the ratchet teeth on the ratchet plate (7), and the limit baffles (504) are slidably snapped on both sides of the ratchet plate (7).

5. A sandpaper holder for easy sandpaper replacement according to claim 1, characterized in that: The elastic element (6) is a sheet or a spring.

6. A sandpaper holder for easy sandpaper replacement according to claim 1, characterized in that: The ratchet plate (7) is an arc-shaped plate, and its center is collinear with the axis of the rotating shaft (201).

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