JPS5918655U

JPS5918655U - Brake actuator

Info

Publication number: JPS5918655U
Application number: JP11524282U
Authority: JP
Inventors: 田中　民夫
Original assignee: 株式会社ナブコ
Priority date: 1982-07-28
Filing date: 1982-07-28
Publication date: 1984-02-04

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図は本考案の実施例による車両用ブレ・−キブース
タの側断面図、第２Ａ図及び第２Ｂ図はそれぞれ第１図
におけるリレーバルブの作用を説明するための部分拡大
断面図である。なお図において、１・・・・・・車両用ブレーキブース
タ、２・・・・・・ブレーキシリンダ、６・・・・・ツ
リンダ・ケーシング、７・・・・・・蓋体、９・・・・
・・リレーバルブ、１７・・・・・・空気圧力室、１８
・・・・・・ピストン、４０・・・・・・連結ロッド、
１１．２６・・・・・・通路、１４・・曲配管、７９・
・・・・・排気部、８３・・・・・・ピストン、８７・
・・・・・弁座、８９・・・・・・排気管、９３・・・
・・・弁座板、９５・・・・・・弁体、Ａ・・・・・・
背室、ａ・・・・・・排気室。FIG. 1 is a side sectional view of a brake booster for a vehicle according to an embodiment of the present invention, and FIGS. 2A and 2B are partially enlarged sectional views for explaining the function of the relay valve in FIG. 1, respectively. In the figure, 1... Vehicle brake booster, 2... Brake cylinder, 6... Turinda casing, 7... Lid body, 9...・
... Relay valve, 17 ... Air pressure chamber, 18
...Piston, 40...Connection rod,
11.26...Passage, 14...Curved pipe, 79...
...Exhaust section, 83...Piston, 87.
... Valve seat, 89 ... Exhaust pipe, 93 ...
... Valve seat plate, 95... Valve body, A...
Back chamber, a...exhaust chamber.

Claims

[Scope of utility model registration request]

A main body having a space inside, a movable body movably inserted into the space, a pressure chamber and a back chamber formed by dividing the space by the movable body, and a pressure chamber and a back chamber provided on the back chamber side of the movable body. and is provided in a passage communicating between an output shaft for transmitting the moving car of the movable body, the pressure chamber and the back chamber, and exhausts at least a portion of the compressed air introduced into the pressure chamber to the back chamber. A brake actuator is provided with an exhaust valve that operates by supplying and discharging compressed air to and from the pressure chamber.
The exhaust valve is provided with an exhaust passage that opens toward the outside air, and a communication passage that communicates the back chamber and the exhaust passage is provided, and the valve is opened at a predetermined pressure or higher at the opening of the exhaust passage to the outside air. A brake actuator equipped with a check valve.