JPS6081061U

JPS6081061U - Brake master cylinder

Info

Publication number: JPS6081061U
Application number: JP17270983U
Authority: JP
Inventors: 薫中村
Original assignee: アイシン精機株式会社
Priority date: 1983-11-08
Filing date: 1983-11-08
Publication date: 1985-06-05

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図は従来例を示・す縦断側面図、第２図は本考案の
一実施例を示す縦断側面図、第３図は第２図に示したホ
ルダの斜視図である。符号の説明、１１・・曲シリンダボディ、１１ａ・・・
・・・内孔、ｌｌｂ・・・・・・環状溝、ｌｉｅ・・・
・・・コンペンセーテイングポート、１２・・・・・・
第１ピストン、１２ａ・・・・・・環状フランジ、１２
ｂ・・・・・・中間部、１２ｃ・・・・・・後端部、１
４・・・・・・スプリング、１６・・・・・・ホルダ、
１６ａ・・・・・・筒部、１６ｂ・・・・・・ガイド部
、１６ｃ・・・・・・スリット、１６ｄ・・・・・・楔
状突起、１６ｅ・・・・・・環状溝、１７，１８・・・
・・・シールリング、１９・・・・・・環状のプレート
、Ａ・・間ピストンカップ。FIG. 1 is a vertical sectional side view showing a conventional example, FIG. 2 is a vertical sectional side view showing an embodiment of the present invention, and FIG. 3 is a perspective view of the holder shown in FIG. Explanation of symbols, 11... Song cylinder body, 11a...
...Inner hole, llb...Annular groove, lie...
...Compensating port, 12...
First piston, 12a... Annular flange, 12
b...Middle part, 12c...Rear end part, 1
4...Spring, 16...Holder,
16a... Cylinder part, 16b... Guide part, 16c... Slit, 16d... Wedge-shaped projection, 16e... Annular groove, 17 ,18...
... Seal ring, 19 ... Annular plate, A ... Piston cup.

Claims

[Scope of utility model registration request]

A cylinder body having an inner hole with an open rear end.A piston is fitted into the rear part of the inner hole via a piston cup so as to be slidable in the axial direction and biased rearward by a spring.
A holder that is slidably supported in the axial direction by the cylinder body by an annular flange formed at the tip thereof and backs up the piston cup, and is assembled into the open end of the inner hole of the cylinder body at the intermediate portion thereof. and a brake mask cylinder which is supported liquid-tightly and slidably in the axial direction by a seal ring and whose rear end protrudes outside the cylinder body through the holder and the seal ring, wherein the inner hole serves as the holder. a cylindrical part that is fitted into the piston by a predetermined amount and whose rear end protrudes a predetermined amount outside the cylinder body; An annular guide part that is slidably supported, a pair of slits that are provided facing the cylindrical part that extends rearward from the guide part and extend in the axial direction to the rear end of the cylindrical part, and these slits. a pair of wedge-shaped protrusions that are integrally formed on the outer periphery of the semi-cylindrical cylindrical portion and engage with an annular groove formed in the cylinder body; A synthetic resin holder with a groove is used, and the annular groove of the holder is interposed with a first seal ring for sealing between the holder and the cylinder body, and the cylindrical part and the guide part of the holder are interposed. A second seal ring for sealing between the piston and the holder is interposed in the front recess formed by the holder, and an annular plate that contacts the front end surface of the holder is disposed in front of the second beer ring. A brake mask cylinder characterized in that a return position of the piston is defined by a part of the piston being placed in contact with the plate.