JPS6220961U

JPS6220961U -

Info

Publication number: JPS6220961U
Application number: JP11292285U
Authority: JP
Priority date: 1985-07-23
Filing date: 1985-07-23
Publication date: 1987-02-07

Description

[Brief explanation of the drawing]

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図は同シリンダの
要部拡大縦断側面図である。符号の説明、１１……シリンダボデー、１１ａ
……内孔、１２……プライマリピストン、１３…
…セカンダリピストン、１３ｃ……長孔、２０…
…バルブ機構、２１……バルブロツド、２２……
弁体、２３……圧縮スプリング、２４……ストツ
パピン。 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 longitudinal sectional side view of the main part of the cylinder. Explanation of symbols, 11...Cylinder body, 11a
...Inner hole, 12...Primary piston, 13...
...Secondary piston, 13c...Long hole, 20...
... Valve mechanism, 21... Valve rod, 22...
Valve body, 23... compression spring, 24... stopper pin.

Claims

[Scope of utility model registration request]

A piston that is fluid-tightly and slidably fitted into an inner hole of a cylinder body and forms a pressure chamber that is constantly in communication with a hydraulic pressure line and a supply chamber that is always in communication with a reservoir tank. A valve rod assembled to be movable in a sliding direction, a valve body provided on the valve rod and detachable from a valve seat provided on the piston to connect and disconnect communication between the pressure chamber and the reservoir tank; a spring member that biases the valve body toward the valve seat; and a leg of the valve rod that is fixed to the cylinder body by passing through an elongated hole in the sliding direction provided in the piston and in the non-operating position of the piston. In a master cylinder comprising a stopper pin that abuts the tip of the valve body and separates the valve body from the valve seat of the piston against the spring member, when the piston is in a non-operating position, the inner circumferential wall of the elongated hole of the piston A master cylinder characterized in that a predetermined interval is provided between the tip end side in the sliding direction and the stopper pin, and the piston is allowed to further slide by the distance from the non-operating position.