Braking valve of rear wheel for automobile

Abstract

An automobile rear wheel brake valve, comprising an upper valve body, a lower valve body, a large piston, a small piston, a coil spring, a valve seat, and a valve assembly, the center and the side of the upper valve body are respectively provided with air inlet holes, and the upper valve body A large piston is built in the body, and a small piston is built in the large piston. At least one groove is arranged on the outer wall of the large piston and the small piston, and a sealing ring is installed in the groove respectively. The center of the large piston body has a center extending upward. shaft, the central shaft has a through hole, the through hole is coaxial with the air inlet hole at the center of the upper valve body, the lower part of the air inlet hole of the upper valve body is recessed to form an enlarged diameter hole, and the central axis extending upward of the large piston body is placed into the enlarged diameter hole at the lower part of the air inlet of the upper valve body; the lower part of the through-hole of the central axis is also recessed to form an enlarged diameter hole, and the center of the top surface of the small piston body is extended upward with a hollow shaft. The shaft is placed in the enlarged diameter hole at the lower part of the large piston through hole. Compared with the prior art, the present invention has the advantages of simple structure, high braking sensitivity, short braking time, strong braking force, safety and reliability.

Description

(1) Technical field [0001] The invention relates to an automobile braking valve, in particular to an automobile braking system, which increases the braking force of the rear wheels of the automobile. Make the rear wheel braking performance of the car safer and more reliable. (2) Background technology [0002] The automobile rear wheel brake valve is an important part of the automobile brake system, and its performance directly affects the automobile brake performance and safety reliability. The existing automobile rear wheel brake valve has many defects due to its unreasonable structural design. . [0003] 1. The original rear wheel brake valve is braked with a working air pressure. [0004] 2. The plane area of ​​the piston of the original rear wheel brake valve is relatively large. When the piston pushes down the valve to brake, the brake air pressure creates resistance to the piston, which delays the time to push the brake valve open, thus braking The time is extended,...

AI Technical Summary

Problems solved by technology

[0002] The automobile rear wheel brake valve is an important part of the automobile brake system, and its performance directly affects the automobile brake performance and safety reliability. The existing automobile rear wheel brake valve has many defects due to its unreasonable structural design.

[0003] 1. The original rear wheel brake valve is braked with a working air pressure

[0004] 2. The plane area of ​​the piston of the original rear wheel brake valve is relatively large. When the piston pushes down the valve to brake, the brake air pressure creates resistance to the piston, which delays the time to push the brake valve open, thus braking Prolonged time, too long braking distance, poor braking control

[0005] 3. The original rear wheel brake valve only uses one air intake port. When the air intake port is blocked, the rear wheel brake will fail and cause an accident

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