JPS5833369U

JPS5833369U - Power steering device

Info

Publication number: JPS5833369U
Application number: JP12879981U
Authority: JP
Inventors: 駒村　清二; 山岸　啓彦
Original assignee: カヤバ工業株式会社
Priority date: 1981-08-31
Filing date: 1981-08-31
Publication date: 1983-03-04
Also published as: JPH0113665Y2

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の断面図、第２図はその要部である制御
バルブの部分の拡大断面図、第３図は同じく他の実施例
の断面図である。 −２・・・・・・パワーシリンダ、３・・・・・・制御
バルブ、６・・・・・・スクリューシャフト、１０ａ、
１０ｂ・・・・・・シリンタ゛室、１５−−−−二・ス
プール、２１ａ、２１ｂ・・・・・・皿バネ、２２ａ、
２２ｂ・・・・・・反力室、２６・・・・・・ポンプポ
ート、′２７，２８・・・・・・タンクポート、３４．
３５・・・・・・作動ポート、３８・曲・油圧切換弁、
３９・・・・・・ソレノイド、４０・・・・・・車速検
出手段、４２・・・・・・スプール、４３．４４・・・
・・・反力通路、４５．４６・・・・・・通１６０−−
−−−−ピストン、６２ａ。６２ｂ・・・・・・反力シリンダ室。FIG. 1 is a sectional view of the present invention, FIG. 2 is an enlarged sectional view of the main part of the control valve, and FIG. 3 is a sectional view of another embodiment. -2...Power cylinder, 3...Control valve, 6...Screw shaft, 10a,
10b...Cylinder chamber, 15----Second spool, 21a, 21b...Disc spring, 22a,
22b...Reaction force chamber, 26...Pump port, '27, 28...Tank port, 34.
35...Operating port, 38, curved/hydraulic switching valve,
39...Solenoid, 40...Vehicle speed detection means, 42...Spool, 43.44...
... Reaction force passage, 45.46 ...... Passage 160--
----Piston, 62a. 62b...Reaction force cylinder chamber.

Claims

[Claims for Utility Model Registration] 1. A spool-type control valve that is switched based on input rotation from a handle, and pressurized oil is selectively supplied to an output drive unit connected to the wheels via the control valve. In the power steering system, there is a reaction force chamber that reciprocally expands and contracts with the displacement of the control valve spool, a vehicle speed detecting means for detecting the high speed range of the vehicle, and a vehicle speed detecting means for detecting the high speed range of the vehicle based on the signal from this detecting means. and a hydraulic switching valve that selectively guides pressure oil from the operating port of the control valve to the reaction force chamber,
A power steering device that generates hydraulic pressure in a reaction force chamber to counter the displacement of the control valve spool in the deceleration region. 2. The power steering device according to claim 1, wherein the reaction force chambers are formed at both ends of the control valve spool. 3. The power steering device according to claim 1, wherein the reaction force chamber is a reaction force sill chamber formed on both sides of a piston provided on the extension shaft of the control valve spool.