Fatigue-resistant caliper structure

Abstract

The utility model discloses a fatigue-resistant caliper structure, relates to the technical field of calipers, and aims to solve the problem that a rectangular sealing ring is short in service life due to the design problem of a sealing groove. Comprising a caliper body, a piston is slidably connected into a piston groove of the caliper body, a brake pad is arranged at the outward end of the piston, a sealing groove is formed in the inner wall of the piston groove, a sealing ring is installed in the sealing groove, and in order to prolong the service life of the sealing ring, an annular partition is arranged on the front side of the sealing groove; through the structural design of the protection groove, when the rectangular sealing ring is subjected to cyclic impact, the rectangular sealing ring is blocked by one advancing distance, so that fatigue fracture, local penetration of the sealing ring, liquid leakage and influence on the sealing effect in the cyclic impact process of the rectangular sealing ring are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to calliper technical field, especially a kind of fatigue-resistant calliper structure. BACKGROUND

[0002] When calliper is carried out rack torsional fatigue durability test, the design of existing sealing groove, when rectangular sealing ring is subjected to certain deformation impact, fatigue fracture will appear at the edge of sealing ring, and fatigue fracture makes the deformation of rectangular sealing ring increase with the movement of piston under hydraulic pressure, thereby affecting the use effect of equipment.

[0003] Therefore, the present application provides a kind of fatigue-resistant calliper structure to meet the needs. SUMMARY

[0004] The purpose of the present application is to provide a kind of fatigue-resistant calliper structure, to solve the problem that rectangular sealing ring is short in service life due to sealing groove design problem.

[0005] To achieve the above object, the present application provides the following technical scheme: a kind of fatigue-resistant calliper structure, including the body of calliper, piston is slidably connected in the piston groove of the body of calliper, and brake pad is provided at the outward end of piston, the inner wall of the piston groove is equipped with sealing groove, sealing ring is installed in the sealing groove, to prolong the service life of sealing ring, annular partition is provided at the front side of sealing groove;

[0006] Protective groove is provided on annular partition, and the protective groove is communicated with the annular partition and the sealing groove.

[0007] Preferably, the adjacent edge of the protective groove and the sealing groove is provided with chamfer.

[0008] Preferably, the inclination angle of the chamfer is 55 degrees to 65 degrees.

[0009] Preferably, the depth of the protective groove 7 on the annular partition 6 is 0.1mm to 0.2mm.

[0010] In summary, the technical effects and advantages of the utility model are as follows:

[0011] The utility model, through the structural design of protective groove, when rectangular sealing ring is impacted in circulation, the rectangular sealing ring is blocked for a distance, to avoid fatigue rupture of rectangular sealing ring in the process of circulating impact, prevent local penetration of sealing ring, cause liquid leakage, affect sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 ;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the clamp body of this utility model;

[0016] Figure 4 This is an enlarged structural diagram of point A of this utility model.

[0017] In the diagram: 1. Clamp body; 2. Piston groove; 3. Piston; 4. Brake pad; 5. Sealing groove; 6. Annular partition; 7. Protective groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: Reference Figures 1-4 The fatigue-resistant caliper structure shown includes a caliper body 1, a piston 3 slidably connected in a piston groove 2 in the caliper body 1, and a sealing groove 5 provided on the inner wall of the piston groove 2.

[0020] To address the issue of damage and penetration at the edges of rectangular sealing rings during use, which affects the sealing effect, an annular partition 6 is provided in front of the sealing groove 5. An L-shaped protective groove 7 is provided on the annular partition 6, with an inclination angle of 60 degrees between the protective groove 7 and the sealing groove 5. The transfer space here is 1.3-0.1×0.15±0.05, effectively extending the service life of the sealing ring and preventing penetration damage during use.

[0021] The height between the protective groove 7 and the piston groove 2 is 0.15mm.

[0022] The distance between the front inner wall of the sealing groove 5 and the front inner wall of the protection groove 7 is 1.3mm.

[0023] In use, the piston 3 slides in the piston groove 2 and pushes the brake pad 4 to move, achieving the purpose of braking.

[0024] In embodiment 2, the difference from embodiment 1 is that the inclination angle of the chamfer is 55 degrees.

[0025] The depth of the protection groove 7 on the annular partition 6 is 0.1mm.

[0026] The distance between the front inner wall of the sealing groove 5 and the front inner wall of the protection groove 7 is 1.0mm.

[0027] In embodiment 3, the difference from embodiment 1 is that the inclination angle of the chamfer is 65 degrees.

[0028] The depth of the protection groove 7 on the annular partition 6 is 0.2mm.

[0029] The distance between the front inner wall of the sealing groove 5 and the front inner wall of the protection groove 7 is 1.6mm.

[0030] The utility model relates to a kind of mechanical and electrical connections, and the working principle is as follows: by starting piston 3, piston 3 slides in the piston groove 2 of the body of forceps 1, piston 3 is pushed outwards when moving brake pad 4, piston 3 is moved, and the sealing ring in sealing groove 5 is moved in the state, sealing ring is blocked when moving by the structural design of protection groove 7, avoid appearing damage penetration, affect sealing effect, lead to leakage brake fluid.

[0031] The mechanical and electrical connection of the utility model is a common means used by those skilled in the art, and technical inspiration can be obtained through limited tests, which belongs to public knowledge.

[0032] Components not described in detail in the present application are prior art.

[0033] Finally, it should be noted that the above-described preferred embodiments of the utility model are not intended to limit the utility model, even though the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements for some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A fatigue-resistant caliper structure, comprising a caliper body (1), a piston (3) being slidingly connected in a piston groove (2) of the caliper body (1), and a brake pad (4) being provided at an outward end of the piston (3), characterized in that: The inner wall of the piston groove (2) is provided with a sealing groove (5), and a sealing ring is installed in the sealing groove (5); in order to prolong the service life of the sealing ring, an annular partition (6) is arranged on the front side of the sealing groove (5); A protection groove (7) is arranged on the annular partition (6), and the protection groove (7) is communicated with the sealing groove (5) and the annular partition (6).

2. The fatigue-resistant caliper structure of claim 1, wherein: A chamfer is arranged at the adjacent edges of the protection groove (7) and the sealing groove (5).

3. The fatigue-resistant caliper structure of claim 2, wherein: The inclination angle of the chamfer is 55 degrees to 65 degrees.

4. The fatigue-resistant caliper structure of claim 3, wherein: The depth of the protection groove (7) on the annular partition (6) is 0.1mm to 0.2mm.

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