JPS5931558U

JPS5931558U - brake booster

Info

Publication number: JPS5931558U
Application number: JP12811982U
Authority: JP
Inventors: 修田中
Original assignee: トヨタ自動車株式会社
Priority date: 1982-08-25
Filing date: 1982-08-25
Publication date: 1984-02-27

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 drawings]

第１図は、本考案の一実施例の構成を示す説明図である
。１０：エンジン、１２：吸気配管、１４：過給機、２０
ニブレーキブースタ、２２ニブレーキペダル（ブレーキ
操作部材）、２３：入カロンド（入力部材）、２４：出
力ロット（出力部材）、２８：フロントシェル（シェル
）、３０：リヤシェル（シェル）、３２：パワーピスト
ン、３４：低圧室、３６：高圧室、５６：切換弁装置、
６０：高圧入力室、６４：逆止弁、６８：圧力タンク（
圧力溜室）。FIG. 1 is an explanatory diagram showing the configuration of an embodiment of the present invention. 10: Engine, 12: Intake piping, 14: Supercharger, 20
2 brake booster, 22 brake pedal (brake operation member), 23: input member (input member), 24: output rod (output member), 28: front shell (shell), 30: rear shell (shell), 32: power piston, 34: low pressure chamber, 36: high pressure chamber, 56: switching valve device,
60: High pressure input chamber, 64: Check valve, 68: Pressure tank (
pressure reservoir).

Claims

[Scope of utility model registration request]

In a vehicle equipped with a supercharger that is driven by the engine's exhaust flow to forcefully feed air into the intake pipe of the engine, the airtight chamber formed inside the shell is divided into two into a low pressure chamber and a high pressure chamber. A power piston is provided and supports an output member by a pressure difference between the low pressure chamber and the high pressure chamber, and an input member that constantly communicates between the low pressure chamber and the high pressure chamber and to which an operating force from a brake operating member is applied. a switching valve device that closes between the low pressure chamber and the high pressure chamber as the switching valve moves, and connects the high pressure chamber to a high pressure input chamber to which the high pressure side gas is supplied; A brake booster in which an operating force applied to an input member is boosted and outputted from the output member, the brake booster connecting the low pressure chamber and the intake pipe of the engine, and connecting the high pressure input chamber and the intake pipe. A pressure reservoir chamber is connected to the piping via a check valve whose flow restriction direction is toward the intake piping, and a pressure reservoir chamber communicating with the high-pressure input chamber is provided. The brake booster is characterized in that the power piston assists the output member according to the pressure difference between the positive pressure maintained in the chamber and the negative pressure supplied to the low pressure chamber.