Fixed clamp piston structure

Abstract

The utility model provides a fixed clamp piston structure, and belongs to the technical field of pistons. The problem that existing research and development cost is high is solved. The fixed caliper piston structure comprises a caliper body and a piston, a piston cylinder for the piston to move is arranged on the caliper body, a detachable piston sleeve is arranged on the piston, a connecting portion is arranged on the piston sleeve, a connecting column is arranged on the caliper body and opposite to the side portion of the piston sleeve, and a connecting hole for the connecting column to penetrate through is formed in the connecting portion. An adjusting bolt is arranged on the connecting column, a reset spring is arranged on the connecting column and located between the connecting portion and the adjusting bolt, a plurality of limiting rods used for limiting are arranged on the caliper body and located on the side portion, corresponding to the connecting column, of the caliper body, and a plurality of limiting holes matched with the limiting rods are formed in the connecting portion. The utility model has the advantages of cost reduction and efficiency improvement.

Description

Technical Field

[0001] This utility model belongs to the field of piston technology, and relates to a piston, and particularly to a fixed clamp piston structure. Background Technology

[0002] Currently, most automotive disc brake systems use brake calipers with different cylinder diameters and piston sizes matched to different vehicle parameters. Because the parameters of most vehicles vary, the cylinder diameters and piston sizes of brake calipers also differ, resulting in an ever-increasing number of brake caliper specifications. Each new vehicle model development project may require a new brake caliper specification, necessitating brake caliper suppliers to develop numerous specifications to meet diverse customer needs. This increases development costs and risks for brake caliper suppliers. With the automotive industry moving towards platformization and standardization, optimizing brake caliper structure, shortening vehicle development cycles, reducing product management risks, and improving efficiency are imperative. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the prior art by providing a fast-resetting fixed-clamp piston structure.

[0004] The objective of this utility model can be achieved through the following technical solution: A fixed caliper piston structure, comprising a caliper body and a piston, wherein the caliper body is provided with a piston cylinder for piston movement, characterized in that the piston is provided with a detachable piston sleeve, the piston sleeve is provided with a connecting part, the caliper body is provided with a connecting post on the side opposite to the piston sleeve, the connecting part is provided with a connecting hole for the connecting post to pass through, the connecting post is provided with an adjusting bolt, a return spring is provided on the connecting post between the connecting part and the adjusting bolt, the caliper body is provided with a plurality of limiting rods for limiting position on the side opposite to the connecting post, and the connecting part is provided with a plurality of limiting holes that cooperate with the limiting rods.

[0005] In the aforementioned fixed clamp piston structure, the connecting column is provided with an adjustment part for adjusting the height by an adjusting bolt, and the inner diameter of the connecting hole is larger than the outer diameter of the adjustment part.

[0006] In the aforementioned fixed-clamp piston structure, the piston is press-fitted onto the piston sleeve.

[0007] Compared with the prior art, the advantages of this utility model are as follows: the piston sleeve is detachably connected to the piston, and by replacing the piston sleeve with different diameters, it can be adapted to brake calipers with different cylinder diameters, thereby obtaining automotive brake calipers with different cylinder diameters, reducing the number of automotive brake caliper specifications, and also reducing the development cycle of automotive brake calipers; the piston sleeve is detachably connected to the piston, and the caliper body and piston sleeve can be made of different materials. The material requirements for the caliper body are lower than those for the piston sleeve, and it can be made of materials with lower cost, density, and strength, while the piston sleeve can be made of high-strength materials, reducing the overall weight and cost of the automotive brake caliper, and improving the production and use efficiency of the brake caliper; the cooperation between the connecting part, the return spring, and the adjusting bolt can make the return faster, and the height of the adjusting bolt can also be adjusted according to the wear degree of the brake pads to adjust the pressure of the return spring for faster return. Attached Figure Description

[0008] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0009] Figure 2 This is a partially enlarged structural diagram of point A of this utility model.

[0010] In the diagram, 1. Caliper body; 2. Piston; 3. Piston cylinder; 4. Piston sleeve; 5. Connecting part; 6. Connecting post; 7. Connecting hole; 8. Adjusting bolt; 9. Return spring; 10. Limiting rod; 11. Limiting hole; 12. Adjusting part. Detailed Implementation

[0011] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0012] like Figure 1 , Figure 2 As shown, this fixed caliper piston structure includes a caliper body 1 and a piston 2. The caliper body 1 has a piston cylinder 3 for the piston 2 to move. The piston 2 is provided with a detachable piston sleeve 4. The piston sleeve 4 is provided with a connecting part 5. A connecting post 6 is provided on the caliper body 1 and on the side opposite to the piston sleeve 4. A connecting hole 7 is provided on the connecting part 5 for the connecting post 6 to pass through. An adjusting bolt 8 is provided on the connecting post 6. A return spring 9 is provided on the connecting post 6 and between the connecting part 5 and the adjusting bolt 8. Several limiting rods 10 for limiting are provided on the caliper body 1 and on the side opposite to the connecting post 6. Several limiting holes 11 that cooperate with the limiting rods 10 are provided on the connecting part 5. Since the inner diameter of the connecting hole 7 is larger than the diameter of the adjusting part 12, the cooperation between the limiting block and the limiting rod 10 prevents the connecting hole 7 from contacting the adjusting part 12 when the piston 2 moves.

[0013] To elaborate further, the connecting column 6 is provided with an adjusting part 12 for adjusting the height of the adjusting bolt 8. The inner diameter of the connecting hole 7 is larger than the outer diameter of the adjusting part 12. When the brake pads wear out, the distance the piston 2 moves outward will increase. The pressure of the locking connecting part 5 on the return spring 9 can be adjusted by adjusting the height of the adjusting bolt 8, so that the return is faster.

[0014] To elaborate further, piston 2 is press-fitted onto piston sleeve 4.

[0015] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model 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 this utility model or exceeding the scope defined by the appended claims.

[0016] Although this document frequently uses terms such as 1. caliper body 1; 2. piston 2; 3. piston cylinder 3; 4. piston sleeve 4; 5. connecting part 5; 6. connecting post 6; 7. connecting hole 7; 8. adjusting bolt 8; 9. return spring 9; 10. limiting rod 10; 11. limiting hole 11; 12. adjusting part 12, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. A fixed caliper piston structure comprising a caliper body (1) and a piston (2), said caliper body (1) having a piston cylinder (3) formed therein for the movement of the piston (2), characterized in that, The piston (2) is provided with a detachable piston sleeve (4), the piston sleeve (4) is provided with a connecting part (5), the caliper body (1) is provided with a connecting column (6) on the side of the piston sleeve (4), the connecting part (5) is provided with a connecting hole (7) for the connecting column (6), the connecting column (6) is provided with an adjusting bolt (8), the connecting column (6) is provided with a reset spring (9) between the connecting part (5) and the adjusting bolt (8), the caliper body (1) is provided with a plurality of limiting rods (10) for limiting on the side of the connecting column (6), and the connecting part (5) is provided with a plurality of limiting holes (11) matched with the limiting rods (10).

2. A structure of a fixed piston according to claim 1, wherein The connecting column (6) is provided with an adjusting part (12) for adjusting the height of the adjusting bolt (8), and the inner diameter of the connecting hole (7) is greater than the outer diameter of the adjusting part (12).

3. The fixed piston structure according to claim 1, wherein The piston (2) is interference-pressed on the piston sleeve (4).

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