Brake pin

Abstract

The utility model relates to the technical field of automobile brake pins, in particular to a brake pin. The brake pin comprises a brake pin body, and an annular groove is formed in the bottom of a pin head of the brake pin body. When the brake pin is inserted into the brake support, arranged between the brake cylinder and the brake support, and screwed into a threaded hole in the top of the brake support through a bolt to be screwed and fixed, the third sealing ring can seal a connecting gap between a pin head of the brake pin and the brake cylinder; and the second sealing ring can seal a connecting gap between the bolt and the threaded hole. In this way, external pollutants can be effectively prevented from entering the threaded hole, then convenience of later bolt dismounting is guaranteed, antiskid lines on the outer side of the brake pin head are matched, dismounting ease of the brake pin can be guaranteed, a second sealing assembly is clamped and fixed to the top of the brake pin head through a second limiting clamping ring, and when the second sealing assembly is aged, the second sealing assembly is fixed to the top of the brake pin head through a second limiting clamping ring. And can be directly pulled out for replacement.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile brake pins, in particular to a brake pin. Background Art

[0002] The function of the automobile brake guide pin is to allow the brake pad to act vertically on the brake disc, connecting the brake cylinder and the brake bracket, and at the same time allowing the brake cylinder to move laterally. After the brake pin is installed between the brake cylinder and the brake bracket, it needs to be fixed by screwing the bolt into the threaded hole on the brake pin head. However, as the vehicle is running, external contaminants can easily enter the threaded hole on the brake pin head, causing it to rust and clog, making it difficult to remove the bolts used to fix the brake pin, thereby reducing the disassembly and maintenance efficiency of automobile brake components. In response to the above situation, technical innovation is carried out on the basis of the existing brake pins. Utility Model Content

[0003] The purpose of the utility model is to provide a brake pin to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a brake pin, comprising:

[0005] A brake pin, wherein an annular groove is provided at the bottom of the pin head of the brake pin, a first annular groove is provided at the top of the annular groove, and two groups of second annular grooves are evenly provided at the top of the pin head of the brake pin, wherein:

[0006] A first sealing component is arranged in the annular groove, a second sealing component is arranged on the top of the brake pin, and anti-skid patterns are evenly arranged on the outer side wall of the pin head of the brake pin.

[0007] Preferably, the first sealing assembly includes a first sealing ring, a first limiting snap ring is arranged on the top of the first sealing ring, an annular docking groove is opened on the bottom of the first sealing ring, and the first sealing ring and the first limiting snap ring are integrally formed.

[0008] Preferably, the outer ring of the pin rod of the brake pin is sleeved with a rubber expansion sleeve, and the top of the rubber expansion sleeve is inserted into the annular docking groove at the bottom of the first sealing ring.

[0009] Preferably, the first sealing ring is inserted into the annular groove, and the first limiting clamping ring is clamped in the first annular clamping groove.

[0010] Preferably, the second sealing assembly includes a third sealing ring, a second sealing ring is arranged on the inner side wall of the third sealing ring, two groups of second limiting clamping rings are evenly arranged on the bottom of the third sealing ring, and the second sealing ring, the third sealing ring and the second limiting clamping ring are integrally formed.

[0011] Preferably, the third sealing ring is arranged at the top of the brake pin, the second limiting clamping ring is clamped in the second annular groove, the second sealing ring is arranged in the threaded hole at the top of the brake pin head, and the inner diameter of the second sealing ring is smaller than the inner diameter of the threaded hole at the top of the brake pin head.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model sleeves the rubber expansion sleeve on the outside of the pin rod of the brake pin, and inserts the top of the rubber expansion sleeve into the annular docking groove at the bottom of the first sealing ring. The first sealing ring can effectively improve the stability and connection sealing of the rubber expansion sleeve sleeve on the outside of the brake pin. The first sealing ring is clamped in the first annular clamping groove at the bottom of the pin head of the brake pin through the first limiting clamping ring. When the first sealing ring is aged, it can be directly pried out and replaced.

[0014] When the brake pin is inserted into the brake bracket and placed between the brake cylinder and the brake bracket, and screwed into the threaded hole at the top of the brake pin for screwing and fixing, the third sealing ring can seal the connection gap between the brake pin head and the brake cylinder, and at the same time, the second sealing ring can seal the connection gap between the bolt and the threaded hole. This can effectively prevent external contaminants from entering the threaded hole, thereby ensuring the convenience of later bolt removal, and in conjunction with the anti-skid pattern on the outside of the brake pin head, the brake pin can be easily removed. The second sealing component is fixed to the top of the brake pin head through the second limit clamp ring. When the second sealing component is aged, it can be directly pulled out and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a brake pin of the utility model;

[0016] Figure 2 This is a front cross-sectional view of a brake pin of the utility model;

[0017] Figure 3 This is a partial front cross-sectional view of a brake pin of the utility model.

[0018] In the figure: 1, brake pin; 11, first sealing ring; 12, first limit snap ring; 2, rubber expansion sleeve; 3, second sealing ring; 31, third sealing ring; 32, second limit snap ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 3 A brake pin comprises a brake pin 1, wherein an annular groove is provided at the bottom of the pin head of the brake pin 1, a first annular groove is provided at the top of the annular groove, and two groups of second annular grooves are evenly provided at the top of the pin head of the brake pin 1, wherein: a first sealing component is placed in the annular groove, a second sealing component is placed on the top of the brake pin 1, and anti-slip grooves are evenly provided on the outer side wall of the pin head of the brake pin 1, the first sealing component comprises a first sealing ring 11, a first limiting snap ring 12 is fixedly provided on the top of the first sealing ring 11, an annular docking groove is provided at the bottom of the first sealing ring 11, the first sealing ring 11 and the first limiting snap ring 12 are integrally formed, the outer ring of the pin rod of the brake pin 1 is sleeved with a rubber telescopic sleeve 2, the top of the rubber telescopic sleeve 2 is inserted into the annular docking groove at the bottom of the first sealing ring 11, and the first sealing ring 11 can effectively improve the stability of the rubber telescopic sleeve 2 sleeved on the outside of the brake pin 1. The second sealing ring 31 is provided with a third sealing ring 31, and the third sealing ring 31 is provided with a third sealing ring 32. The third sealing ring 31 is provided with a third sealing ring 32, and the third sealing ring 31 is provided with a third sealing ring 31 ...1. The third sealing ring 31 is provided with a third sealing ring 32, and the third sealing ring 31 is provided with a third sealing ring 31. The third sealing ring 31 is provided with a third sealing ring 31. The third sealing ring 31 is provided with a third sealing ring 32, and the third sealing ring 31 is provided with a third sealing ring 31. The third sealing ring 31 is provided with a third sealing ring 31. The third sealing ring 31 is provided with a third sealing ring 31. The third sealing ring 31 is provided with a third sealing ring 31. The third sealing ring 31 is provided with a third sealing ring 31. The third sealing ring 31 is provided with a third sealing ring 31. The third sealing ring 31 is provided with a third sealing ring 31. The third sealing ring 31 is provided with a third sealing ring 31. The third sealing ring 31 is provided with a third sealing ring 3

[0021] Working principle: The rubber expansion sleeve 2 is sleeved on the outside of the pin rod of the brake pin 1, and the top of the rubber expansion sleeve 2 is inserted into the annular docking groove at the bottom of the first sealing ring 11. The first sealing ring 11 can effectively improve the stability of the rubber expansion sleeve 2 sleeved on the outside of the brake pin 1 and the connection sealing. The first sealing ring 11 is clamped in the first annular clamping groove at the bottom of the pin head of the brake pin 1 through the first limiting clamping ring 12. When the first sealing ring 11 is aged, it can be directly pried out and replaced. When the brake pin 1 is inserted into the brake bracket and placed between the brake cylinder and the brake bracket, and is screwed into the top threaded hole by bolts for threaded fixation, the third sealing ring 31 can seal the connection gap between the pin head of the brake pin 1 and the brake cylinder. At the same time, the second sealing ring 3 can seal the connection gap between the bolt and the threaded hole. This can effectively prevent external contaminants from entering the threaded hole, thereby ensuring the convenience of later bolt disassembly, and combined with the anti-slip grooves on the outside of the brake pin 1 head, the brake pin 1 can be easily disassembled. The second sealing assembly is fixed to the top of the brake pin 1 head through the second limiting clamping ring 32. When the second sealing assembly is aged, it can be directly pulled out and replaced.

Claims

1. A brake pin, characterized in that: include: A brake pin (1), wherein the bottom of the pin head of the brake pin (1) is provided with an annular groove, the top of the annular groove is provided with a first annular groove, and the top of the pin head of the brake pin (1) is evenly provided with two groups of second annular grooves, wherein: A first sealing component is placed in the annular groove, a second sealing component is placed on the top of the brake pin (1), and the outer side wall of the pin head of the brake pin (1) is evenly provided with anti-slip grooves.

2. A brake pin according to claim 1, characterized in that: The first sealing assembly comprises a first sealing ring (11), a first limiting snap ring (12) is arranged on the top of the first sealing ring (11), an annular docking groove is arranged on the bottom of the first sealing ring (11), and the first sealing ring (11) and the first limiting snap ring (12) are integrally formed.

3. A brake pin according to claim 2, characterized in that: The outer ring of the pin rod of the brake pin (1) is sleeved with a rubber telescopic sleeve (2), and the top of the rubber telescopic sleeve (2) is inserted into the annular docking groove at the bottom of the first sealing ring (11).

4. A brake pin according to claim 2, characterized in that: The first sealing ring (11) is inserted into the annular groove, and the first limiting clamping ring (12) is clamped in the first annular clamping groove.

5. A brake pin according to claim 1, characterized in that: The second sealing assembly comprises a third sealing ring (31), the inner side wall of the third sealing ring (31) is provided with a second sealing ring (3), the bottom of the third sealing ring (31) is evenly provided with two groups of second limiting snap rings (32), and the second sealing ring (3), the third sealing ring (31) and the second limiting snap ring (32) are integrally formed.

6. A brake pin according to claim 5, characterized in that: The third sealing ring (31) is arranged at the top of the brake pin (1), the second limiting clamping ring (32) is clamped in the second annular clamping groove, the second sealing ring (3) is arranged in the threaded hole at the top of the pin head of the brake pin (1), and the inner diameter of the second sealing ring (3) is smaller than the inner diameter of the threaded hole at the top of the pin head of the brake pin (1).

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