JPS59125474U

JPS59125474U - Rotary valve type control valve of power steering device

Info

Publication number: JPS59125474U
Application number: JP1989483U
Authority: JP
Inventors: 晃長谷川; 岩瀬　博英
Original assignee: トヨタ自動車株式会社
Priority date: 1983-02-14
Filing date: 1983-02-14
Publication date: 1984-08-23

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〜第３図は本考案にかかる制御弁の一例を示すも
ので、第１図は第３図のＩ−Ｎ線に沿う縦断面図、第２
図は第１図の■−■線に沿う横断面図、第３図は第１図
の■−■線に沿う拡大横断面図、第４図は第１図の拡大
部分縦断面図、第５図は同制御弁の第１変形例を示す第
３図に対応する部分横断面図、第６図は同制御弁の第２
変形例を示す第３図に対応する部分横断面図である。符号の説明、１０・・・・・・バルブハウジング、１２
・・・・・・供給ポート、２０・・曲インプットシャフ
ト、２０ａ・・・・・・ロータ、３０・・・・・・バル
ブスリーブ、３２ｂ・・・・・・中央環状溝、３３ｂ・
・・・・・流入ポート、３４．３４Ａ、３４Ｂ・・・・
・・凹所、４０・・・・・・ピニオンシャフト。1 to 3 show an example of a control valve according to the present invention, and FIG. 1 is a vertical sectional view taken along line I-N in FIG.
The figure is a cross-sectional view taken along the line ■-■ in Figure 1, Figure 3 is an enlarged cross-sectional view taken along the line ■-■ in Figure 1, Figure 4 is an enlarged partial longitudinal cross-sectional view of Figure 1, 5 is a partial cross-sectional view corresponding to FIG. 3 showing a first modification of the control valve, and FIG. 6 is a second modification of the control valve.
FIG. 4 is a partial cross-sectional view corresponding to FIG. 3 showing a modification. Explanation of symbols, 10...Valve housing, 12
......Supply port, 20...Curved input shaft, 20a...Rotor, 30...Valve sleeve, 32b...Central annular groove, 33b...
...Inflow port, 34.34A, 34B...
...Recess, 40...Pinion shaft.

Claims

[Scope of utility model registration request]

A rotor that rotates integrally with a first shaft within a valve housing, and a valve that rotates integrally with a second shaft that is disposed concentrically around the outer periphery of the rotor and is connected to the first shaft so as to be rotatable relative to the first shaft by a predetermined amount. A sleeve is provided, and the supply and discharge lines provided between the valve sleeve and the rotor are switched by relative rotation between the valve sleeve and the rotor, and the hydraulic oil from the oil pump is passed through the supply line and into one oil chamber of the power cylinder. In the rotary valve type control valve of the power steering device, the rotary valve type control valve is configured to supply hydraulic oil in the other oil chamber of the power cylinder and return it to the reservoir through the discharge line, and the valve is provided on the outer periphery of the valve sleeve. An annular groove that is wider than the inflow port and protrudes toward the outer end of the inflow port is opened at the inner end of the supply port provided in the housing and is opened at the outer end of the inflow port provided radially in the valve sleeve. A rotary valve type control valve for a power steering device, characterized in that a recess is provided and the annular groove and the inflow port are communicated through the recess.