JPS6137076U

JPS6137076U - power steering device

Info

Publication number: JPS6137076U
Application number: JP12264484U
Authority: JP
Inventors: 誠二上村
Original assignee: 株式会社アツギユニシア
Priority date: 1984-08-10
Filing date: 1984-08-10
Publication date: 1986-03-07

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 the drawing]

第１図ａ及びｂは本考案に係る動力操向装置の一実施例
を示す概念的説明図及び断面図、第２図ａはウオームシ
ャフトの他端側を示す一部省略斜視図、第２図ｂはバル
ブプレートを示す斜視図、第２図Ｃはカラープレートを
示す斜視図、第３図はウオームシャフトの他端側の端面
を示す正面図、第４図はバルブプレートの背面図、第５
図ａは第１図ｂにおける■−Ｖ線拡大断面図、第５図ｂ
はバルブプレートをウオ′−ムシャフトに対して反時計
方向に回動した状態を示す拡大断面図、第５図Ｃはバル
ブプレートをウオームシャフトに対して時計方向に回動
した状態を示す拡大断面図である。１・・・ピストン、１ａ・・・ラック（操舵部材）、２
・・・シリンダ、３，４・・・第１笈び第２の各作動室
、６・・・ハウジング、９・・・ウオームシャフト（作
動部材）、２０・・・）＜）レブプレート（油圧制御弁
）、２０ｉ，２０ｊ・・・第１及び第２の各作動室用紋
り部、２０ｋ，２０１・・・背圧降下室。1A and 1B are conceptual explanatory diagrams and sectional views showing one embodiment of the power steering device according to the present invention, FIG. 2A is a partially omitted perspective view showing the other end side of the worm shaft, and FIG. Figure b is a perspective view of the valve plate, Figure 2C is a perspective view of the collar plate, Figure 3 is a front view of the other end of the worm shaft, Figure 4 is a rear view of the valve plate, and Figure 4 is a rear view of the valve plate. 5
Figure a is an enlarged sectional view taken along the line ■-V in Figure 1 b, Figure 5 b
5C is an enlarged sectional view showing the valve plate rotated counterclockwise relative to the worm shaft, and FIG. 5C is an enlarged sectional view showing the valve plate rotated clockwise relative to the worm shaft. It is. 1... Piston, 1a... Rack (steering member), 2
...Cylinder, 3, 4...First and second working chambers, 6...Housing, 9...Worm shaft (operating member), 20...)<) Rev plate (hydraulic control valve), 20i, 20j... each crest for the first and second working chambers, 20k, 201... back pressure reduction chamber.

Claims

[Scope of utility model registration request]

A hydraulic control valve that is slidably disposed within the housing is controlled to move in response to road reaction force during steering, and hydraulic oil is supplied to each of the first and second working chambers in the cylinder separated by the piston. Selectively controlling supply and discharge to control the movement of the piston in the axial direction. In the power steering device for assisting the steering operation of a steering member connected to an operating member, the hydraulic control valve is formed to control the supply and discharge of hydraulic oil to each of the first and second working chambers. The back pressure of the hydraulic fluid selectively discharged from the first and second working chambers is gradually lowered between the first and second working chamber throttle parts and the working member. A power steering device comprising one or more back pressure reducing chambers for reducing back pressure.