JPS60137673U

JPS60137673U - Power steering device

Info

Publication number: JPS60137673U
Application number: JP2646884U
Authority: JP
Inventors: 杉原　功一; 広司川上; 白鳥　治則; 太田　忠夫
Original assignee: トヨタ自動車株式会社
Priority date: 1984-02-24
Filing date: 1984-02-24
Publication date: 1985-09-12

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図は本考案の第１実施例に係る動力舵取装置の縦断
面図、第２図は第１図の■−■線に沿う横断面図、第３
図は第２実施例に係る動力舵取装置の第２図に対応する
横断面図である。符号の説明、１１・・曲バルブハウジング、１２・・・
・・・インプットシャフト、１２ａ・・曲凹状カム面、
１２ｂ・・・・・・挿入孔、１４・・・・・・ピニオン
シャフト、１５・・・・・・トーションバー、２１・・
・・・・バルブロータ、２２・・・・・・バルブスリー
ブ、２４・・・・・・ボール、２５・曲・フッシュロッ
ド、２６，２６Ａ・・・・・・バネ部材。FIG. 1 is a longitudinal cross-sectional view of a power steering device according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIG.
The figure is a cross-sectional view corresponding to FIG. 2 of the power steering device according to the second embodiment. Explanation of symbols, 11...Curved valve housing, 12...
...Input shaft, 12a...Curved concave cam surface,
12b...Insertion hole, 14...Pinion shaft, 15...Torsion bar, 21...
... Valve rotor, 22... Valve sleeve, 24... Ball, 25. Curved/Fush rod, 26, 26A... Spring member.

Claims

[Scope of utility model registration request]

a valve rotor that rotates integrally with a first shaft rotatably supported within a valve housing; and a second shaft that is coaxially fitted and connected to the shaft end of the first shaft so as to be relatively rotatable by a predetermined amount. a valve sleeve that rotates integrally and is arranged concentrically around the outer periphery of the valve rotor; and a switching valve mechanism that is provided between the valve sleeve and the valve rotor and that can switch supply and discharge flow paths to each oil chamber of the power cylinder. a torsion bar that is inserted concentrically between the two shafts to couple the two shafts and generate relative rotation between the valve rotor and the valve sleeve in accordance with steering torque; In a power steering device comprising a rotary valve type control valve that operates the switching valve mechanism to control the supply and discharge of hydraulic oil to each oil chamber of the power cylinder, a portion of the outer periphery of one of the two shafts is provided. A pair of pressers are attached to the other of the two shafts to form a concave cam surface and slide a predetermined amount radially outward of the other shaft by the action of the cam surface when the two shafts rotate relative to each other, thereby pressing the bracket. An annular spring member for elastically pressing the presser against the cam surface is disposed on the outside of the child, and a hydraulic pressure is applied to the presser through the insertion hole of the torsion bar to reduce the pressure according to the vehicle speed to press the presser. A power steering device characterized in that a child is biased against the spring member.