JPS62127848U

JPS62127848U -

Info

Publication number: JPS62127848U
Application number: JP1603186U
Authority: JP
Priority date: 1986-02-06
Filing date: 1986-02-06
Publication date: 1987-08-13

Description

[Brief explanation of the drawing]

第１図は本考案に従つたマスタシリンダの一実
施例を示す縦断面図、第２図は第１図に於ける要
部拡大図、第３図は第１図に於けるリテーナの側
面図、第４図は第３図のリテーナの変形例を示す
側面図、第５図は第１図に於けるバルブ機構組付
け時の断面図である。１０……マスタシリンダ、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、１４……プ
ライマリリターンスプリング、１５……セカンダ
リリターンスプリング、２３……ストツパピン、
３３……大径孔、３３ａ……弁座、３４……小径
孔、３５……長孔、３６……弁体、３７……バル
ブロツド、３８……バルブスプリング、３９……
リテーナ、３９ａ……鍔部、３９ｂ……円筒部、
３９ｃ……円筒部端面、３９ｄ……爪状部。 FIG. 1 is a vertical sectional view showing an embodiment of the master cylinder according to the present invention, FIG. 2 is an enlarged view of the main parts in FIG. 1, and FIG. 3 is a side view of the retainer in FIG. 1. 4 is a side view showing a modification of the retainer shown in FIG. 3, and FIG. 5 is a sectional view of the valve mechanism shown in FIG. 1 when the valve mechanism is assembled. 10...Master cylinder, 11...Cylinder body, 11a...Inner hole, 12...Primary piston, 13...Secondary piston, 14...Primary return spring, 15...Secondary return spring, 23...Stopper pin,
33... Large diameter hole, 33a... Valve seat, 34... Small diameter hole, 35... Long hole, 36... Valve body, 37... Valve rod, 38... Valve spring, 39...
Retainer, 39a... collar part, 39b... cylindrical part,
39c...Cylindrical part end surface, 39d...Claw-shaped part.

Claims

[Scope of utility model registration request]

A piston that is fluid-tightly and slidably fitted into the inner hole of the cylinder body and forms a supply chamber that is constantly in communication with the reservoir tank and a pressure chamber that is always in communication with the hydraulic pressure pipe line. , a valve rod installed in a hole provided in the piston so as to be movable in a sliding direction; and a valve rod provided in the valve rod that contacts and separates from a valve seat formed in the piston to connect the supply chamber and the pressure chamber. a valve element that controls communication on and off; a valve spring that biases the valve element toward the valve seat; a valve element that is inserted into a long hole provided in the piston and fixed to the cylinder body; A master having a stopper pin with which an end of a valve rod abuts and causes the valve element to be separated from the valve seat of the piston against the valve spring, and a return spring that urges the piston toward the push rod through a retainer. In the cylinder, the retainer has a stepped cap shape having a flange portion and a cylindrical portion, the flange locks the return spring, and the inner end surface of the cylindrical portion locks the valve spring. The master cylinder further includes a plurality of claw-like portions provided on the cylindrical portion for fixing the retainer to the piston.