A grinding sheet which is easy to install

Abstract

The utility model relates to the technical field of grinding piece, especially a grinding piece convenient to install, which comprises a grinding piece body, a contact piece, an adjusting assembly and a mounting hole, the mounting hole outer circle of the grinding piece body is fixedly connected with the contact piece, the adjusting assembly is arranged on the grinding piece body, the adjusting assembly comprises a clamping groove, the clamping groove is arranged on the contact piece and has at least two, a clamping plate is slidably connected to the contact piece, the clamping plate can be inserted into the clamping groove, a top block is fixedly connected to the end of the clamping plate, and the mounting hole is arranged on the grinding piece body.

Description

Technical Field

[0001] This utility model relates to the field of grinding disc technology, and in particular to a grinding disc that is easy to install. Background Technology

[0002] Grinding discs are key consumables in angle grinders, widely used for cutting, grinding, and polishing materials such as metals, stone, and ceramics. Grinding discs generate powerful cutting and frictional forces through high-speed rotation, achieving efficient material removal. They offer advantages such as high processing efficiency, wide applicability, and flexible operation. In existing technology, grinding discs are assembled through a centrally located mounting hole. Specifically, the grinding disc is fitted onto the angle grinder's output shaft through the mounting hole, and then clamped in place using a pressure plate to ensure stability during high-speed operation.

[0003] However, the mounting hole size of existing grinding discs is fixed, while the output shaft size varies between different brands and models of angle grinders. This inconsistency in size specifications forces users to select grinding disc products with mounting hole sizes corresponding to their specific models. Otherwise, assembly gaps will occur due to size mismatch, which will lead to polarization risks and safety hazards during grinding disc operation. In addition, the size compatibility issue restricts the versatility and ease of use of grinding disc products. Therefore, there is an urgent need for an installation solution that can adapt to different shaft diameters to improve the compatibility and safety of grinding discs. Utility Model Content

[0004] This invention provides an easily installable grinding disc that can be sized to fit various angle grinders, thereby improving the versatility and ease of use of the grinding disc product.

[0005] The technical implementation scheme of this utility model is: a grinding disc that is easy to install, comprising: a grinding disc body, wherein a mounting hole is formed in the center of the grinding disc body, the grinding disc body is installed into the mounting shaft of an angle grinder through the mounting hole, and a spacer is fixed on the mounting shaft;

[0006] A contact piece is fixedly connected to the outer ring of the mounting hole of the grinding disc body, and the contact piece is located on one side of the grinding disc body;

[0007] An adjustment component is provided on the grinding disc body;

[0008] The adjustment component includes: a slot is provided on the contact piece, at least two slots are provided, and the slots are arranged in a straight line along the diameter direction of the contact piece;

[0009] A card plate is slidably connected to the contact piece, and the card plate can be inserted into the card slot;

[0010] A top block is fixedly connected to the end of the card plate, and the card plate will form a surface contact fit with the mounting shaft through the top block.

[0011] Optionally, at least three sets of adjustment components are provided, and each adjustment component is evenly distributed along the circumference of the contact piece.

[0012] Optionally, the contact piece is made of a magnetic material and can magnetically contact the spacer.

[0013] The grinding disc further includes: a mounting channel, and the contact piece is fixedly connected to the mounting channel;

[0014] A contact plate is slidably connected to the mounting channel;

[0015] A return spring is fixedly connected between the mounting groove and the contact plate.

[0016] Optionally, the grinding disc further includes: a first contact pad, which is fixedly connected to the side of the top block that contacts the spacer;

[0017] The second contact pad is fixedly connected to the side of the contact plate that contacts the spacer.

[0018] Optionally, the grinding disc further includes an auxiliary rod, which is fixedly connected to the clamping plate. When the grinding disc is installed, the auxiliary rod will form a mechanical stop with the spacer.

[0019] Optionally, the grinding disc further includes a scale, which is fixedly connected to the side of the slot.

[0020] Compared with existing technologies, this utility model has the following advantages: The beneficial effects of this utility model are as follows: By using a clamping plate to form an envelope circle to adapt to the mounting shaft of the angle grinder, and by setting the position of the clamping plate to be adjustable, this utility model can be precisely adjusted according to the size of the angle grinder mounting shaft, improving the ease of installation and expanding its applicability. This utility model employs magnetic positioning and a return spring working in tandem, ensuring stable installation and disassembly operations even when operating the pressing plate with one hand, improving the ease of operation and efficiency of installation and disassembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a separate diagram showing the connection structure of the contact piece, return spring, and contact plate of this utility model.

[0023] Figure 3This is a cross-sectional view showing the connection relationship between the card plate and the top block of this utility model.

[0024] The meanings of the reference numerals in the figure are as follows: 1: Grinding disc body, 2: Contact plate, 3: Mounting groove, 4: Return spring, 5: Contact plate, 6: Slot, 7: Slot plate, 8: Top block, 9: First contact pad, 10: Auxiliary rod, 11: Scale, 12: Second contact pad. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0026] Example: An easy-to-install grinding disc, see [link / reference] Figure 1 and Figure 3 The assembly includes: a grinding disc body 1, with a mounting hole at its center, through which the grinding disc body 1 is installed onto the mounting shaft of an angle grinder. A spacer is fixed to the mounting shaft, as is a pressure plate threaded to the mounting shaft. Rotating the pressure plate reduces the distance between the pressure plate and the spacer, thus stably fixing the grinding disc body 1 onto the mounting shaft; a contact piece 2, fixedly mounted on the outer ring of the mounting hole of the grinding disc body 1, located on one side of the grinding disc body 1. When installing this grinding disc, the side of the grinding disc body 1 containing the contact piece 2 must face towards the angle grinder; and an adjustment assembly, which is provided on the grinding disc body 1. This adjustment assembly is used to adjust the effective diameter of the mounting hole of the grinding disc body 1 to accommodate mounting shafts of different angle grinder specifications. The adjustment assembly has four sets. The components are evenly distributed around the contact piece 2. The adjustment components include: three slots 6 on the contact piece 2, arranged in a straight line along the diameter of the contact piece 2; a locking plate 7, a 7-shaped locking plate 7 slidably mounted on the contact piece 2, which can slide and adjust along the diameter of the contact piece 2. The end of the locking plate 7 can be inserted into the slot 6 to lock the position of the locking plate 7 through the insertion. The contact piece 2 allows the locking plate 7 to move in a direction perpendicular to the plane of the contact piece 2 to ensure smooth engagement between the locking plate 7 and the slot 6; and a top block 8, which is fixedly mounted on the end of the locking plate 7. When the grinding disc is installed on the angle grinder, the locking plate 7 will form a surface contact with the mounting shaft through the top block 8, and the top block 8 increases the contact area between the locking plate 7 and the angle grinder.

[0027] The installation method of this grinding disc is as follows: Select the corresponding slot 6 according to the size of the angle grinder's mounting shaft, insert the retaining plate 7 into the slot 6, so that the four sets of adjustment components form an envelope circle that adapts to the size of the mounting shaft, thereby realizing the adaptability adjustment of this grinding disc according to the mounting shaft. During installation, insert this grinding disc onto the mounting shaft with the contact piece 2 facing the angle grinder and supported by the spacer. Then, press the locking switch on the angle grinder to lock the mounting shaft, and then fix the grinding disc by threading the rotating pressure plate with the mounting shaft. At this time, under the radial constraint of the retaining plate 7 and the axial pressing action of the pressure plate, the grinding disc is stably installed. Therefore, this grinding disc has the characteristics of precise adjustment, quick installation, and wide applicability, and can be adapted to angle grinders with mounting shafts of different specifications.

[0028] See Figures 1-3 The contact piece 2 is made of magnetic material and can magnetically contact the spacer. It also includes: a mounting channel 3, on which the mounting channel 3 is fixedly mounted; a contact plate 5, on which the contact plate 5 is slidably mounted; and a return spring 4, on which the mounting channel 3 and the contact plate 5 are fixedly mounted.

[0029] When tightening the pressure plate, the contact plate 5 first contacts the spacer. As the pressing stroke increases, the return spring 4 is compressed, causing the contact plate 5 to slide into the mounting groove 3. When the distance between the contact plate 2 and the spacer reaches the critical magnetic attraction distance, magnetic attraction will occur, effectively preventing the grinding disc from rotating with the pressure plate, thus allowing the pressure plate to better fix the grinding disc. During disassembly, the grinding disc is pushed in the opposite direction to break through the magnetic attraction distance with the spacer, and the return spring 4 will quickly rebound, achieving automatic disassembly of the grinding disc. Therefore, this grinding disc uses the synergistic effect of magnetic positioning and the return spring 4. When the operator needs to control the pressure plate with one hand and press the locking switch with the other during installation, the operator can still maintain stable installation and disassembly operations, improving operational convenience and installation and disassembly efficiency.

[0030] See Figures 1-3 The figure also includes: a first contact pad 9, which is fixedly installed on the side of the top block 8 that contacts the spacer; a second contact pad 12, which is fixedly installed on the side of the contact plate 5 that contacts the spacer; the first contact pad 9 and the second contact pad 12 are made of rubber composite material with a high coefficient of friction and have a built-in honeycomb buffer layer to improve the anti-slip buffering ability and stability of the grinding disc; an auxiliary rod 10, which is fixedly installed on the clamping plate 7; the auxiliary rod 10 provides a gripping part for the use of the clamping plate 7, making it easy for the operator to accurately control the movement of the clamping plate 7; in addition, when the grinding disc is installed, the auxiliary rod 10 will form a mechanical stop with the spacer to improve the insertion stability of the clamping plate 7; and a scale 11, which is fixedly installed on the side of the slot 6; the scale 11 is used to display the current position of the clamping plate 7 and the actual effective through diameter of the mounting hole of the grinding disc body 1 to facilitate the adjustment of the clamping plate 7.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A convenient-to-mount abrasive sheet, comprising: A grinding disc body (1) has a mounting hole in the center. The grinding disc body (1) is installed into the mounting shaft of the angle grinder through the mounting hole. A spacer is fixed on the mounting shaft. Contact piece (2), the outer ring of the mounting hole of the grinding disc body (1) is fixedly connected to the contact piece (2), the contact piece (2) is located on one side of the grinding disc body (1); An adjustment component is provided on the grinding disc body (1), and the adjustment component is used to adjust the effective diameter of the mounting hole of the grinding disc body (1); The adjustment component includes: a slot (6) is provided on the contact piece (2), at least two slots (6) are provided, and the slots (6) are arranged in a straight line along the diameter direction of the contact piece (2); The contact piece (2) is slidably connected to the card plate (7), and the card plate (7) can be inserted into the card slot (6); Top block (8), the end of the clamping plate (7) is fixedly connected to the top block (8), and the clamping plate (7) will form a surface contact fit with the mounting shaft through the top block (8).

2. An abrasive sheet for easy installation according to claim 1, wherein The adjustment components are provided in at least three groups, and each adjustment component is evenly distributed along the circumference of the contact piece (2).

3. An abrasive sheet for easy installation according to claim 2, wherein The contact piece (2) is made of magnetic material and can make magnetic contact with the spacer. The grinding disc further includes: a mounting channel (3), and the mounting channel (3) is fixedly connected to the contact piece (2); Contact plate (5), the mounting channel (3) is slidably connected to the contact plate (5); A reset spring (4) is fixedly connected between the mounting channel (3) and the contact plate (5).

4. An abrasive sheet for easy installation according to claim 3, wherein The grinding disc further includes: a first contact pad (9), and the first contact pad (9) is fixedly connected to the side of the top block (8) that contacts the spacer. The second contact pad (12) is fixedly connected to the side of the contact plate (5) that contacts the partition.

5. An abrasive sheet for easy installation according to claim 4, wherein The grinding disc also includes an auxiliary rod (10). The auxiliary rod (10) is fixedly connected to the clamping plate (7). When the grinding disc is installed, the auxiliary rod (10) will form a mechanical stop with the partition.

6. An abrasive sheet for easy installation according to claim 5, wherein The grinding disc also includes a scale (11), which is fixedly connected to the side of the slot (6). The scale (11) is used to display the actual effective diameter of the mounting hole when the plate (7) is in that position.

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