| 摘要 |
A brake device having a clamping force variable structure is provided to selectively or simultaneously vary high/low clamping forces in a lubricating brake structure. A brake device includes a cylinder body(20), pistons(30A,30B), a large diameter chamber(C), a small diameter chamber(B), a recession chamber(A), and a brake pad(50). The brake device speeds down a brake disc. The pistons are provided in the cylinder body while facing with each other. The large diameter chamber and the small diameter chamber supply oil in order to allow pistons to move forward between the pistons and the cylinder body. The brake pad generates a friction force with the brake disk in the front end of the pistons. A lubricant groove is formed in the brake pad. |
