Quick return mechanism for vehicle braking system

Abstract

The invention relates to the field of vehicle braking, and discloses a quick return mechanism for a vehicle braking system. The quick return mechanism comprises calipers, a piston and a return member;the calipers comprise a cylindrical caliper shell, one end of the piston is located in the caliper shell, the other end of the piston is opposite to a friction sheet, a sealing ring is fastened to the periphery of the piston, and a groove is formed in the corresponding position of the inner wall of the caliper shell; the sealing ring is located in the groove, a first annular step face is arrangedat the periphery of the piston, a second annular step face is arranged on the inner wall of the caliper shell, and the return member is arranged at the periphery of the piston; one end of the returnmember abuts against the first annular step face, and the other end of the return member abuts against the second annular step face to achieve the purpose that after input of brake force is stopped,,the piston quickly returns to the original position through elasticity of the return member. According to the quick return mechanism, after input of the brake force is stopped, the piston quickly returns to the original position, it is ensured that the friction sheet has enough return space, and excessive wear of the friction sheet is avoided.

Description

technical field [0001] The invention relates to the technical field of automobile braking, in particular to a quick return mechanism of an automobile braking system. Background technique [0002] Such as figure 1 As shown, in the existing design of the caliper 2, after the input of the braking force stops, the sealing ring 3 needs to be restored after being deformed, so the piston 1 will return to its position under the action of the sealing ring 3 to ensure that the friction plate 4 has enough space to return. However, usually the sealing ring 3 returns slowly and has low efficiency. Now, the design of the caliper 2 usually causes the friction plate 4 to return to its original position, which will accelerate the wear of the friction plate 4 due to the untimely or insufficient return of the piston 1 . Contents of the invention [0003] (1) Technical problems to be solved [0004] The technical problem to be solved by the present invention is how to make the piston quickl...

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Problems solved by technology

[0002] like figure 1 As shown, in the existing design of the caliper 2, after the input of the braking force stops, the piston 1 will return to its position under the action of the sealing ring 3 because the seal ring 3 needs to be restored after being deformed, so as to ensure that the friction plate 4 has enough return space. However, the return of the sealing ring 3 is usually slow and the efficiency is low. Now the design of the caliper 2 usually causes the friction plate 4 to return to its original position, which is affected by the delay in the return of the piston 1 or not in place, and accelerates the wear of the friction plate 4.

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