JPS60115777U - Power steering device - Google Patents

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

【図面の簡単な説明】[Brief explanation of drawings]

図面は本考案の実施例を示すもので、第１図は動力舵取
装置の断面図、第２図は第１図の■−■線矢視拡大断面
図、第３図はポート溝を展開して示す図、第４図は第３
図の■部の詳細断面図、第５図はバルブ回転角に対する
圧力特性を示す線図である。 １１・・・・・・ピニオン軸（出力軸）、１６・・・・
・・パワーシリンダ、１８・・・・・・弁ハウジング、
２０・・・・・田−タ形制御弁、２１・・・・・・スリ
ーブ弁部材、２２・・・・・・ロータ弁部材、２４・・
・・・・操舵軸（入力軸）、２７・・・・・・ポート溝
、３１・・・・・・スリーブ本体、３２・・・・・・薄
肉円筒体、３３・・・・・・供給溝、３５，３６・・・
・・・分配溝、４０・・・・・・ポート溝。 １ （゛ルＪ回転月The drawings show an embodiment of the present invention. Fig. 1 is a sectional view of the power steering device, Fig. 2 is an enlarged sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is an expanded view of the port groove. The figure shown in Figure 4 is
FIG. 5 is a detailed cross-sectional view of part 2 in the figure, and is a diagram showing pressure characteristics with respect to valve rotation angle. 11...Pinion shaft (output shaft), 16...
...Power cylinder, 18...Valve housing,
20... Data type control valve, 21... Sleeve valve member, 22... Rotor valve member, 24...
... Steering shaft (input shaft), 27 ... Port groove, 31 ... Sleeve body, 32 ... Thin cylindrical body, 33 ... Supply Groove, 35, 36...
...Distribution groove, 40...Port groove. 1 (゛ru J rotating moon

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 弁ハウジングに回転可能に嵌合されたスリーブ弁部材を
出力軸に連結し、前記スリーブ弁部材に相対回転可能に
嵌合されるロータ弁部材を入力軸に結合し、この入力軸
に加えられる手動操舵トルクに基づくロータ弁部材とス
リーブ弁部材との相対回転によってパワーシリンダへの
圧油の給排を制御するようにした動力舵取装置において
、前記スリーブ弁部材は、圧油が供給される供給溝およ
び前記パワーシリンダの画室に通ずる一対の分配溝を備
えたスリーブ本体と、このスリーブ本体内に嵌着された
薄肉円筒体との２部材で構成され、前記ロータ弁部材の
外周にたる形のポート溝を円周上等角度位置に形成し、
また前記スＩＪ　−ブ弁部材の薄肉円筒体に前記たる形
ポート溝の各間に位置してそのたる形状の両縁部に補給
する形状の両縁部を有するつづみ形のポート溝を円周上
等角度位置に形成してなる動力舵取装置。A sleeve valve member rotatably fitted to the valve housing is coupled to an output shaft, a rotor valve member rotatably fitted to the sleeve valve member is coupled to an input shaft, and a manual input shaft is applied to the input shaft. In a power steering device that controls supply and discharge of pressure oil to and from a power cylinder by relative rotation between a rotor valve member and a sleeve valve member based on steering torque, the sleeve valve member is configured to control supply and discharge of pressure oil to a power cylinder. It is composed of two members: a sleeve body having a groove and a pair of distribution grooves communicating with the compartment of the power cylinder, and a thin-walled cylindrical body fitted into the sleeve body, and a barrel-shaped body is attached to the outer periphery of the rotor valve member. Port grooves are formed at equiangular positions on the circumference,
In addition, in the thin cylindrical body of the valve member, a cone-shaped port groove is provided between each of the barrel-shaped port grooves and has both edges shaped to replenish both edges of the barrel-shaped port groove. A power steering device formed at equal angular positions on the circumference.