A matching structure of a brake pin and a pin sleeve

Abstract

The utility model provides a matching structure of a pin and a pin sleeve of a disc brake, including a pin body and a pin sleeve body; a locking ring is built into one end of the pin sleeve body, and the pin sleeve body is sleeved on the pin body. In the utility model, the locking ring is built into the pin sleeve body, and is integrally formed when the pin sleeve body is produced. When the pin sleeve body is installed on the pin, it can be directly sleeved. Compared with the two steps of installing the traditional external locking ring, the installation of this structure is simpler, that is, only one step is required; and there is no falling off after installation, and the firmness and sealing performance are better.

Description

Technical Field

[0001] The utility model belongs to the technical field of brakes, and in particular relates to a matching structure of a brake pin and a pin sleeve. Background Art

[0002] The adjuster of the disc brake consists of a caliper body and a bracket. There are pin holes on the left and right sides of the housing of the brake caliper body for installing long and short pins. The long and short pins are connected by long and short pin high-strength bolts and penetrate the bracket. When braking, the caliper body slides on the long and short pins. Therefore, the adjuster of the disc brake is connected by long and short pin bolts and pins to ensure the stable connection and smooth displacement of the caliper body and the bracket under the action of braking force.

[0003] In order to ensure the dustproof and waterproof effect, the head of the column pin is used in conjunction with the column pin sleeve. The column pin sleeve is a rubber protective sleeve. In order to ensure the stable connection between the column pin sleeve and the column pin and prevent the column pin sleeve from falling off during use, a circle of groove is generally machined on the upper end of the column pin, and the upper end of the column pin sleeve is fixed in the groove with a locking ring to achieve connection. The problems with this connection method are: the column pin sleeve and the locking ring made of rubber material are separate. First, during assembly, the column pin sleeve must be put on the column pin first, and then the locking ring must be put on and locked. These are two processes. When installing the locking ring, it is affected by the proficiency and carefulness of the workers, and there may be improper assembly, which leads to poor sealing. Therefore, after the installation is completed, personnel are required to check the assembly status; second, during use, due to the vibration of the vehicle and the temperature difference between hot and cold, the locking ring may fall off and be lost from the column pin sleeve, which leads to the problem of the column pin sleeve falling off from the column pin. Utility Model Content

[0004] In order to solve the above technical problems, the utility model proposes a matching structure of a brake pin and a pin sleeve.

[0005] The utility model adopts the following technical scheme: a matching structure of a brake pin and a pin sleeve, comprising a pin body and a pin sleeve body; a locking ring is built into one end of the pin sleeve body, and the pin sleeve body is sleeved on the pin body.

[0006] Preferably, a groove is circumferentially formed on the outer side of the pin body, and one end of the locking ring built into the pin sleeve body is clamped in the groove.

[0007] Compared with the prior art, the advantages and positive effects of the utility model are:

[0008] 1. The locking ring in the utility model is built into the body of the column pin sleeve and is integrally formed when the column pin sleeve body is produced. When the column pin sleeve body is installed on the column pin, it can be directly put on. Compared with the two steps of installing the traditional external locking ring, the installation of this structure is simpler, that is, only one step is required; and there is no falling off after installation, and the firmness and sealing performance are better.

[0009] 2. The utility model can also machine a groove on the column pin body, and clamp one end of the column pin sleeve body with a locking ring in the groove, which can ensure the limiting position of the column pin sleeve body on the column pin body on the other hand to ensure the sealing and firmness of the column pin and the column pin sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the connection between a traditional column pin and a column pin sleeve;

[0011] Figure 2 This is a schematic diagram of the connection between the column pin and the column pin sleeve in Example 1;

[0012] Figure 3 It is an enlarged schematic diagram of the position of the built-in locking ring of the pin sleeve body;

[0013] Figure 4 It is a partial schematic diagram of the brake caliper body and the bracket after installation (the brake is not in working state);

[0014] Figure 5 It is a partial schematic diagram of the brake caliper body and the bracket after installation (brake working state);

[0015] Figure 6 It is a schematic diagram of the structure of the adjuster of the disc brake;

[0016] Figure 7 A cross-sectional view of the disc brake assembly.

[0017] Attached Figure 6 , Figure 7 Description: 1-pin body, 2-pin sleeve body, 3-caliper body, 4-bracket, 5-hexagon socket bolt, 6-end cover, 7-blocking cover, 8-pressure arm, 9-adjustment mechanism, 10-friction plate, 11-brake disc. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Example 1

[0021] like Figure 2-3 As shown, a matching structure of a brake pin and a pin sleeve comprises a pin body 1 and a pin sleeve body 2. A locking ring 3 is built into one end of the pin sleeve body 2, and the pin sleeve body 2 is sleeved on the pin body 1.

[0022] To ensure sealing and firmness, a groove may be formed circumferentially on the outer side of the pin body 1 as shown in the figure (not shown in the drawings of this embodiment), and one end of the pin sleeve body 2 with a built-in locking ring 3 is clamped in the groove.

[0023] In this embodiment, the locking ring 3 is built into the pin sleeve body 2 and is integrally formed when the pin sleeve body 2 is produced. When the pin sleeve body 2 is installed on the pin body 1, it can be directly put on. Compared with the two steps of installing the traditional external locking ring 3, the installation of this structure is simpler, that is, only one step is required; and there is no falling off after installation, and the firmness and sealing performance are better.

[0024] like Figure 7 As shown in the figure, the working principle of the disc brake assembly is: converting air pressure into friction force to achieve the braking function. When braking, the air chamber push rod pushes the pressure arm of the adjustment mechanism, and the air force is transmitted from the air chamber to the caliper body and bracket assembly (i.e., the adjustment mechanism) through the sliding of the column pin. Pushing the friction plate, the adjustment mechanism then transmits the force from the adjustment mechanism to the friction plate, so that the friction plate and the brake disc rub to achieve the braking function. When the brake is canceled, the pressure arm is driven to rebound by the return spring, the column pin is retracted, the friction plate and the brake disc are released and the friction work stops.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A matching structure of a brake pin and a pin sleeve, comprising a pin body and a pin sleeve body; characterized in that: A locking ring is built into one end of the pin sleeve body, and the pin sleeve body is sleeved on the pin body.

2. The matching structure of the brake pin and the pin sleeve according to claim 1, characterized in that: A circle of groove is formed in a circumferential direction on the outer side of the pin body, and one end of the pin sleeve body with a built-in locking ring is clamped in the groove.

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