| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic brake device having no degradation of brake operation feeling caused by a sliding failure of a sliding part. SOLUTION: A front cylindrical part 19g of a first auxiliary piston 19 is loosely engaged with a back opening 12b of a second piston 12, and a front end surface 19b of the front cylindrical part 19g is butted on a bottom 12c of the back opening 12b. A back truncated cone part 19c of the first auxiliary piston 19 is loosely fitted with a front opening 20g of a second auxiliary piston 20, and a back end surface 19f of a flange-like large diameter part 19a of the first auxiliary piston 19 is butted on a front end surface 20f of the second auxiliary piston 20. |
