JPS6144363U

JPS6144363U - Steering force control mechanism of power steering device

Info

Publication number: JPS6144363U
Application number: JP13010284U
Authority: JP
Inventors: 広司川上; 功一杉原
Original assignee: トヨタ自動車株式会社
Priority date: 1984-08-27
Filing date: 1984-08-27
Publication date: 1986-03-24

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

Description

[Brief explanation of the drawing]

第１図は本考案の二実施例を示す動力舵取装置の要部縦
断面図、第２図は第１図の■一■線に沿う断面図である
。符号の説明、１１・・・ハウジング、１２．１３・・・
シャフト、２０・・・変換機構、３０・・・スプールバ
ルブ機構、３１・・・バルブスプール、３２・・・バル
ブスリーブ、４３・・・油圧管路、４４・・・ソレノイ
ドバルブ、Ｒ３，Ｒ４・・・油圧反力室。FIG. 1 is a vertical sectional view of a main part of a power steering device showing two embodiments of the present invention, and FIG. 2 is a sectional view taken along line 1-1 in FIG. Explanation of symbols, 11...Housing, 12.13...
Shaft, 20... Conversion mechanism, 30... Spool valve mechanism, 31... Valve spool, 32... Valve sleeve, 43... Hydraulic pipe line, 44... Solenoid valve, R3, R4. ...Hydraulic reaction chamber.

Claims

[Scope of utility model registration request]

a conversion mechanism that converts rotational displacement between two shafts that are coaxially supported within the housing and connected to allow relative rotation by a predetermined amount into axial displacement; and a conversion mechanism that is arranged concentrically on the outer periphery of either of the two shafts. A valve spool that is displaced in the axial direction by the conversion mechanism, and a valve sleeve that is arranged concentrically around the outer periphery of the valve spool and controls the supply and discharge of hydraulic oil to and from each oil chamber of the power cylinder together with the valve spool. In the steering force control mechanism of the power steering device, hydraulic reaction force chambers are provided on both ends of the valve spool in the housing, and one hydraulic reaction force chamber is provided on one oil chamber side of the power cylinder. At the same time, the other hydraulic reaction chamber is communicated with the other oil chamber side of the power cylinder, and both of these hydraulic reaction chambers are communicated with each other, and a variable throttle is interposed in this communication passage. 6. A steering force control mechanism for a power steering device, characterized in that the throttle amount of No. 6 is increased in accordance with vehicle speed.