JPS58140858U

JPS58140858U - master cylinder

Info

Publication number: JPS58140858U
Application number: JP3723682U
Authority: JP
Inventors: 大見　厚志
Original assignee: アイシン精機株式会社
Priority date: 1982-03-18
Filing date: 1982-03-18
Publication date: 1983-09-22

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、従来のポートレスマスタシリンダを示す断面
図、第２図は、本考案に係るポートレスマスタシリンダ
の一実施例を示す断面図である。２０・・・・・・第２圧力室、２４・・・・・・第２無
圧室、２６・・・・・・弁機構、３２・・・・・・カッ
プ部材、３８・・・・・・弁体、４２・・・・′・・第
１スプリング、４６・・・・・・インレットポート、４
８・・・・・・油溝、５０・・・・・・連通孔。FIG. 1 is a sectional view showing a conventional portless master cylinder, and FIG. 2 is a sectional view showing an embodiment of the portless master cylinder according to the present invention. 20... Second pressure chamber, 24... Second pressureless chamber, 26... Valve mechanism, 32... Cup member, 38... ...Valve body, 42...'...First spring, 46...Inlet port, 4
8...Oil groove, 50...Communication hole.

Claims

[Scope of utility model registration request]

A portless type in which the inlet port, which communicates the pressure chamber inside the cylinder formed by the piston fitted into the cylinder with the pressureless chamber outside the cylinder, is placed near the end of the cylinder and is opened and closed by a valve mechanism that interlocks with the piston. In a mask cylinder, an inlet port is formed at the bottom of a cup-shaped member that is fluid-tightly fitted with the bottom end at the end of the cylinder, and an inlet port is formed at the bottom of the cup-shaped member through an oil groove formed on the outside of the bottom and a communication hole in the cylinder side wall. A portless mask cylinder characterized by a port communicating with a no-pressure chamber.