JPS6220962U

JPS6220962U -

Info

Publication number: JPS6220962U
Application number: JP11292385U
Authority: JP
Priority date: 1985-07-23
Filing date: 1985-07-23
Publication date: 1987-02-07

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係るタンデムマス
タシリンダの縦断側面図、第２図は第１図の要部
拡大図である。符号の説明、１１……シリンダボデー、１１ａ
……内孔、１３……セカンダリピストン、１３ｂ
……段付内孔、１３ｂ１……大径部、１３ｂ２…
…小径部、１３ｂ３……弁座、２０……バルブ機
構、２１……ロツド、２２……弁体、２２ａ……
係着部、２３……圧縮コイルスプリング、２４…
…ストツパピン、２５……リテーナ、Ｒ３……補
給室、Ｒ４……圧力室。 FIG. 1 is a longitudinal sectional side view of a tandem master cylinder according to an embodiment of the present invention, and FIG. 2 is an enlarged view of the main part of FIG. 1. Explanation of symbols, 11...Cylinder body, 11a
...Inner hole, 13...Secondary piston, 13b
...Stepped inner hole, 13b1...Large diameter part, 13b2...
...Small diameter part, 13b3... Valve seat, 20... Valve mechanism, 21... Rod, 22... Valve body, 22a...
Engaging portion, 23... Compression coil spring, 24...
...stopper pin, 25...retainer, R3...supply chamber, R4...pressure chamber.

Claims

[Scope of utility model registration request]

A pressure chamber is fluid-tightly and slidably inserted into the inner hole of the cylinder body, and a pressure chamber that is constantly in communication with the hydraulic pressure line and a supply chamber that is always in communication with the reservoir tank are formed in the inner hole, and the pressure chamber side is a piston having a large diameter stepped inner hole extending in the sliding direction and communicating the pressure chamber and the supply chamber; an elastic valve body that blocks communication between the pressure chamber and the supply chamber when seated on a valve seat provided in a stepped portion of the hole; a spring that urges the valve body toward the valve seat; a rod that is movably loosely fitted into the stepped inner hole and engages the valve body at one end; and a rod that is fixed to the cylinder body and that A master cylinder comprising a stopper that engages with the other end of the rod to position the rod and hold the valve body in a position spaced apart from the valve seat when the piston is in the non-operating position. 1. A master cylinder characterized in that an engaging part is formed at the center of one end, a dish-shaped retainer is engaged at the center of the engaging part, and the other end of the spring is brought into contact with the retainer.