JPH0254671U

JPH0254671U -

Info

Publication number: JPH0254671U
Application number: JP13315688U
Authority: JP
Priority date: 1988-10-12
Filing date: 1988-10-12
Publication date: 1990-04-20

Description

[Brief explanation of drawings]

第１図及び第２図は本考案の第１実施例を示し
、第１図は要部拡大断面図、第２図は液圧マスタ
シリンダの断面正面図、第３図は第２実施例を示
す要部拡大断面図である。１…液圧マスタシリンダ、２…シリンダボデイ
、３…リザーバ、６…シリンダ孔、７…ピストン
、１０…液圧室、１２…貯液室、１３…リリーフ
ポート、１４…サプライポート、１７…連通孔、
１８…ニツプル、１９…チエツク弁、２０…弁体
、２１…リターンスプリング、２２…弁座、ＢＦ
…作動液。 1 and 2 show a first embodiment of the present invention, FIG. 1 is an enlarged sectional view of the main part, FIG. 2 is a sectional front view of the hydraulic master cylinder, and FIG. 3 is a sectional view of the second embodiment. FIG. 1... Hydraulic pressure master cylinder, 2... Cylinder body, 3... Reservoir, 6... Cylinder hole, 7... Piston, 10... Hydraulic pressure chamber, 12... Liquid storage chamber, 13... Relief port, 14... Supply port, 17... Communication hole,
18...Nipple, 19...Check valve, 20...Valve body, 21...Return spring, 22...Valve seat, BF
...Working fluid.

Claims

[Claims for Utility Model Registration] 1. A vehicle in which a reservoir is arranged in the upper part of a cylinder body in which a piston is inserted into a cylinder hole, and the fluid storage chamber of the reservoir and the cylinder hole are communicated through a relief port and a supply port. In the hydraulic master cylinder for use, the piston is formed with a communication hole that communicates the hydraulic pressure chamber of the cylinder hole with the supply port, and the communication hole stores an overpressure liquid that is generated in the hydraulic pressure chamber and exceeds a setting. A hydraulic master cylinder for a vehicle, characterized in that it is provided with a check valve that returns fluid to a fluid chamber. 2. A hydraulic master cylinder for a vehicle in which a reservoir is disposed in the upper part of a cylinder body in which a piston is inserted into a cylinder hole, and a fluid storage chamber of the reservoir and the cylinder hole are communicated with each other through a relief port and a supply port. A communication hole is formed in the cylinder body to communicate between the hydraulic pressure chamber of the cylinder hole and the liquid storage chamber, and a check is provided in the communication hole to return overpressure liquid that is generated in the hydraulic pressure chamber and exceeds a setting to the liquid storage chamber. A vehicle hydraulic master cylinder characterized by being equipped with a valve.