JPS58179266U

JPS58179266U - Dandem type brake booster

Info

Publication number: JPS58179266U
Application number: JP7701782U
Authority: JP
Inventors: 繁田中
Original assignee: 日野自動車株式会社
Priority date: 1982-05-27
Filing date: 1982-05-27
Publication date: 1983-11-30

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図は従来のダンデム型ブレーキ倍力装置におけるバ
キュームサーボ回路図、第２図は本考案装置の断面図、
第３図は本考案装置におけるバキュームサーボ回路図で
ある。 ″　１・・曲ブレーキペダル、２・・曲ダンデム型ブレ
ーキ倍力装置、３・・・・・・ダンデムマスクシリンダ
、４・・・・・・バキュームタンク、４ａ・・・・・・
前方タンク、４ｂ・・・・・・後方タンク、２０ａ・・
・・・・前方パワーシリンダ、２、Ｏｂ・・・・・・後
方パワーシリンダ、２１・・量大気室、２３，２４・・
・・・・ピストン、２５ａ。２５ｂ・・・・・・筒状部材、２７．２８・・・・・・
ダイヤフラ　　・ム、３１・・・・・・通路、−３２ａ
、　　３２ｂ・・・・・・作動圧力導入口、３３・・・
・・・被動杆、３４・・・・・・操作杆、３５＠＠ｊｌ
ｌｌｌ１１プランジヤ、３６ａ、３６ｂ、３７ａ、３７
ｂ・・・・・・通路、４０ａ、４０ｂ−・・・・・弁機
構、Ａ、　Ｂ。Ｃ，Ｄ・・・・・・圧力中。Fig. 1 is a vacuum servo circuit diagram of a conventional dandem type brake booster, Fig. 2 is a sectional view of the device of the present invention,
FIG. 3 is a vacuum servo circuit diagram of the device of the present invention. ″ 1... Curved brake pedal, 2... Curved dandem type brake booster, 3... Dandem mask cylinder, 4... Vacuum tank, 4a...
Front tank, 4b...Rear tank, 20a...
...Front power cylinder, 2, Ob... Rear power cylinder, 21... Volume atmospheric chamber, 23, 24...
...Piston, 25a. 25b...Cylindrical member, 27.28...
Diaphragm, 31... Passage, -32a
, 32b... Working pressure inlet, 33...
...Driven rod, 34...Operating rod, 35@@jl
lll11 plunger, 36a, 36b, 37a, 37
b...Passage, 40a, 40b-...Valve mechanism, A, B. C, D... Under pressure.

Claims

[Scope of utility model registration request]

A pressure chamber is defined in the container before and after the piston by a piston and a diaphragm located around the piston, and the pressure chambers in front and behind the piston are communicated with each other, and the fluid acting on the pressure chamber is A pair of power cylinders are provided, in which a cylindrical member having a valve mechanism therein for controlling pressure is integrally formed with a piston and protrudes outside the container, and an operating pressure inlet connected to a vacuum tank is provided in the front pressure chamber. An atmospheric chamber is formed in the middle, and the cylindrical member formed in the piston of the front power cylinder is connected to the piston of the rear power cylinder by arranging them in series in the same direction and connecting them together. A cylindrical member integrated with the piston of the front power cylinder is provided with an operating rod that is axially movable in conjunction with the brake pedal and controls the valve mechanism, and a cylindrical member that is integrated with the piston of the front power cylinder is provided with an axially movable operating rod that is interlocked with the brake pedal and controls the valve mechanism. A plunger is provided that operates in conjunction to control the valve mechanism, and the piston of the front power cylinder is equipped with a driven rod that connects with the mask cylinder.The operating pressure inlets of the front and rear power cylinders are connected to the front and rear vacuum tanks, respectively. Tako ζ
A dandem type brake booster featuring: