JPS58142170U

JPS58142170U - Tandem master cylinder with negative pressure booster

Info

Publication number: JPS58142170U
Application number: JP4022482U
Authority: JP
Inventors: 秀行森本
Original assignee: 株式会社ナブコ
Priority date: 1982-03-19
Filing date: 1982-03-19
Publication date: 1983-09-24

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、本考案の実施例である負圧式倍力装置付タン
デムマスタシリンダの側断面図、第２図　−は第１図に
おける板ばねの縮小正面図、第３図は第１図における密
封部材の拡大正面図、及び第４図は同密封部材の側断面
図である。なお図において、１・・・・・・負圧式倍力装置付タン
　　′デムマスタシリンダ、２・・・・・・タンデムマ
スタシリンダ部、３・・・・・・負圧式倍力装置部、５
・・・・・・シリンダ孔、６・・・・・・シリンダ本体
、７・・・：・・プライマリ−・ピストン、８・・・・
・・セカンダリ−やピストン、９・・・・・・第１ブレ
ーキ液圧発生室、１０・・・・・・第２ブレーキ液圧発
生室、１８・・・・・・リターンスプリング、１９・・
・・・・係合用ポルト、１９ａ・・・・・・頭部、３０
・・・・・・前方ケーシング、３４・・・・・・後方ケ
ーシング、３６・・・・・・可動壁、３７・・・・・・
負圧室、３８・・・・・・変圧室、４７・・・・・・出
力軸、６３・・・・・・予負荷ばね、６９・・・・・・
板ばね、８２・・・・・・係止ビン。Fig. 1 is a side sectional view of a tandem master cylinder with a negative pressure booster, which is an embodiment of the present invention; Fig. 2 - is a reduced front view of the leaf spring in Fig. 1; An enlarged front view of the sealing member, and FIG. 4 is a side sectional view of the same sealing member. In the figure, 1... Tandem master cylinder with negative pressure booster, 2... Tandem master cylinder section, 3... Negative pressure booster section, 5
... Cylinder hole, 6 ... Cylinder body, 7 ...: ... Primary piston, 8 ...
...Secondary or piston, 9...First brake fluid pressure generation chamber, 10...Second brake fluid pressure generation chamber, 18...Return spring, 19...
...Engagement port, 19a...Head, 30
...Front casing, 34... Rear casing, 36... Movable wall, 37...
Negative pressure chamber, 38... Transforming pressure chamber, 47... Output shaft, 63... Preload spring, 69...
Leaf spring, 82... Locking bottle.

Claims

[Scope of utility model registration request]

a cylinder body having a cylinder hole that is open at the rear;
A first brake is provided between a primary piston that is slidably and tightly fitted in the rear of the cylinder hole, and a primary piston that is slidably and tightly fitted in the cylinder hole in front of the primary piston. a secondary piston defining a hydraulic pressure generating chamber and defining a second brake hydraulic pressure generating chamber between it and the closed end of the cylinder body; a return spring stretched between the piston and the secondary piston; an S-cup-shaped spring retainer for receiving the end of the return spring on the secondary piston side; a bottom portion of the spring retainer; an engaging portion that engages with the primary;
an engaging member fixed to a piston, a casing provided on the rear side of the cylinder body, and a movable wall movably disposed within the casing and partitioning a negative chamber at the front and a variable pressure chamber at the rear. , a negative pressure type comprising a preload spring disposed between the movable wall and the casing and biasing the movable wall rearward, and an output shaft disposed between the primary piston and the movable wall. In the tandem master cylinder with a booster, a spring for biasing the primary piston rearward is provided between the movable wall and the primary piston, and the spring retainer is attached to the secondary piston. A tandem master cylinder with a negative pressure booster, which is characterized by being locked.