Self-sealing diaphragm integral riveting spring brake air chamber

Abstract

The invention relates to a self-sealing diaphragm integral riveting spring brake air chamber comprising a pull rod bolt (1), a spring (2), a Y-ring (3), a piston (4), a cylinder block (5), a middle shell (6), a diaphragm (7), a pushing disc (8) and an end cover (9); the cylinder block (5) includes a cavity and is provided with an opening, and the cylinder block (5) is formed by stamping a steel plate; and all structural components are sequentially positioned, assembled and pre-pressed into the cavity according to the assembly sequence to form a parking cavity and a driving cavity, and at the position of the opening of the cylinder block (5), the part, at the opening, of the steel plate is inwards bent through a riveting technology until the outer side face of the edge of the end cover (9)is wrapped and fastened to form integral rivet press fit. According to the self-sealing diaphragm integral riveting spring brake air chamber, the overall riveting process is adopted, overall rivetingfit fastening of the spring brake air chamber is achieved, two positioning ribs at the two ends of the diaphragm achieve natural alignment of the diaphragm, the sealing failure is effectively prevented, and the two positioning ribs can improve air tightness during air inflation.

Description

technical field [0001] The invention relates to a spring brake air chamber for a vehicle, in particular to a self-sealing diaphragm integrally riveted spring brake air chamber. Background technique [0002] The braking system is a series of special devices used on the car to make the outside world (mainly the road surface) apply a certain force to certain parts of the car (mainly the wheels) to perform a certain degree of forced braking on the vehicle. Commercial vehicles are usually based on the air brake system, which uses compressed air to actuate the mechanical actuator to provide the braking force required for deceleration and parking of the vehicle. The brake chamber is the brake actuator of the commercial vehicle. The spring brake air chamber is widely used in the air brake system of trucks, trucks and passenger cars, which is generally installed on the drive axle of the car. [0003] As we all know, the brake air chamber can be divided into three types according to ...

AI Technical Summary

Problems solved by technology

However, it has the following technical defects: due to the high requirements for the fit gap between the cylinder block and the middle shell, if it is hit by an external force during use, it is easy to cause the fit gap between the cylinder block and the middle shell to change or cause the cylinder body to rotate Phenomenon, so that it is easy to cause the cylinder part to fall off and cause the vehicle brake to fail

However, it has the following technical defects: due to the relatively large structural shape of the clamp-connected brake air chamber, it is easy to cause assembly interference during vehicle assembly; and because the clamp assembly angles of the left and right bridges need to be symmetrical, a large number of Products with different clamp angles result in a wide variety of products, which is not conducive to mass production; in addition, because clamp bolts require a specific torque when tightening, when the torque is out of tolerance, it is easy to cause poor fastening and cause air leakage

However, this invention still belongs to the clamp-connected brake air chamber structure, and still has the following technical defects: due to the relatively large structural shape of the clamp-connected brake air chamber, it is easy to cause assembly interference in the process of assembling the vehicle; and due to The clamp assembly angles of the left and right bridges need to be symmetrical, and the customer will produce a large number of products with different clamp angles according to the loading requirements, resulting in a wide variety of products, which is not conducive to mass production; in addition, because the use of clamp bolts requires specific Torque, when the torque is out of tolerance, it is easy to cause poor fastening and cause air leakage

However, this invention still belongs to the structure of the screw-in brake air chamber, and there are still the following technical defects: due to the relatively high requirements for the fit clearance between the cylinder body and the middle casing, it is easy to cause the cylinder body and the middle casing to be damaged if they are hit by an external force during use. Changes in the fit gap between the cylinders or the rotation of the cylinder body, which will easily cause the cylinder body part to fall off and cause the vehicle brake to fail

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