Two win piston installation structure of caliper brake disc of automobile

摘要

The present invention relates to a two-win piston mounting structure of a caliper brake disc of an automobile, wherein a second piston (3) is connected to a tip of a rod (1) protruding into an inner chamber of a caliper (12) via a second seal (2). Rod is inserted into the inner circumferential surface of the second piston 3 and the first piston 5 is inserted through the first seal 4 and sealed with the third seal 6 to protrude. The spring 7 and spring holder 8 and pin 9 are installed at the tip of the returnable part so that the vibration generated during braking can be suppressed and the life of the seal can be extended to improve braking performance. It is.