| 摘要 |
PURPOSE: A vehicle master cylinder is provided to connect the push rod of a booster and a first, a second piston in order to return the first and the second piston by the returning spring of the booster. CONSTITUTION: A master cylinder(140) interlocks with a first and a second piston(160,170) by a return spring(116). The entire length of the master cylinder is reduced by retrenching a space for durability of the spring and a second hydraulic pressure chamber, which is a space for compressing the spring. Thereby, the first piston and the second piston are easily connected to each other with a simple structure.
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