| 摘要 |
A recess is formed in a rear portion of a pressurizing piston, and a small-diameter rod is formed in a front portion of an input piston. A sleeve is disposed inside the recess, and the small-diameter rod is liquid-tightly and slidably fitted to the sleeve. A space between the small-diameter rod and the recess serves as a volume chamber, which is held in communication with a reservoir. The input piston and the pressurizing piston are slidably fitted to each other via the sleeve. Therefore, the generation of a frictional force between the input piston and the pressurizing piston can be made unlikely, and the pressurizing piston can be favorably prevented from advancing as the input piston advances. |
