| 摘要 |
PROBLEM TO BE SOLVED: To prevent pedals, a push rod of a booster, and the like which are arranged in a cabin from being stabbed back to a driver's side by external force from a front part direction of a car as much as possible, and to universally use a piston constructing member of a master piston as much as possible even when a diameter of a cylinder hole of a hydraulic master cylinder is changed. SOLUTION: A rear part cylinder 22c is formed out of a synthetic resin separately from a first divided piece 22a and a second divided piece 22b which are made of a metal and form a piston body of a master piston 22. The rear part cylinder 22c is externally fitted to a rear part spindle 22h of the second divided piece 22b on a more rear part side of the car body than an abutting plain A of a stopper ring 22f of the first divided piece 22a with an annular guide member 61. |
