JPH01161878U

JPH01161878U -

Info

Publication number: JPH01161878U
Application number: JP5620388U
Authority: JP
Priority date: 1988-04-26
Filing date: 1988-04-26
Publication date: 1989-11-10

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面図、第２
図は第１図の制御バルブが適用された４輪操舵装
置の概略構成図である。２４……シリンダロツド、６０……ケーシング
、６１……ピストン、６２，６３……圧力室、６
４……コントロールスリーブ、６５，６６……パ
イロツト圧導入室、７１，７２……出力ポート、
７３……流出ポート、７４，７５……流入ポート
。 Fig. 1 is a sectional view showing one embodiment of the present invention;
This figure is a schematic configuration diagram of a four-wheel steering system to which the control valve of FIG. 1 is applied. 24... Cylinder rod, 60... Casing, 61... Piston, 62, 63... Pressure chamber, 6
4... Control sleeve, 65, 66... Pilot pressure introduction chamber, 71, 72... Output port,
73... Outflow port, 74, 75... Inflow port.

補正昭６３．１２．２１実用新案登録請求の範囲を次のように補正する
。Amendment December 21, 1983 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】ケーシングと、同一ケーシング内にスライド自
在に設けられたシリンダロツドと、同シリンダロ
ツドに設けられたピストンと、同ピストンにより
隔成されて上記ケーシング内に形成された左右の
圧力室と、上記シリンダロツドと上記ケーシング
との間で両者に対してスライド自在に設けられた
コントロールスリーブと、上記コントロールスリ
ーブの両端部と上記ケーシングとにより形成され
パイロツト圧が導入される左右のパイロツト圧導
入室と、上記コントロールスリーブの内周に形成
され上記左右の圧力室に常時連通する左右の出力
ポートと、上記コントロールスリーブの内周に形
成され圧力流体が流入する流入ポートと、上記コ
ントロールスリーブの内周に形成され圧力流体が
流出する流出ポートと、上記コントロールスリー
ブの内周と上記シリンダロツドの外周により形成
され上記左右の出力ポートと上記流入ポート及び
上記流出ポートとの連通状態を上記コントロール
スリーブと上記シリンダロツドとの相対変位によ
り制御するスプールバルブ機構とを備え、同スプ
ールバルブ機構はパイロツト圧による上記コント
ロールスリーブのスライド変位に対して上記シリ
ンダロツドを同方向にスライド変位させる側の出
力ポートを上記流入ポートに連通させるよう構成
されていることを特徴とするアクチユエーター体
型制御バルブ。[Claims for Utility Model Registration] A casing, a cylinder rod slidably provided in the same casing, a piston provided in the cylinder rod, and left and right pressures formed in the casing separated by the piston. a control sleeve slidably provided between the cylinder rod and the casing; and left and right pilot pressure introduction ports formed by both ends of the control sleeve and the casing, into which pilot pressure is introduced. a chamber, left and right output ports formed on the inner periphery of the control sleeve and constantly communicating with the left and right pressure chambers, an inflow port formed on the inner periphery of the control sleeve into which pressurized fluid flows, and an inflow port formed on the inner periphery of the control sleeve into which pressure fluid flows; An outflow port formed on the periphery of the control sleeve through which pressure fluid flows out, the left and right output ports formed by the inner periphery of the control sleeve and the outer periphery of the cylinder rod, the inflow port, and the outflow port are in communication with the control sleeve and the outflow port. The spool valve mechanism is equipped with a spool valve mechanism that is controlled by relative displacement with the cylinder rod, and the spool valve mechanism connects the output port on the side that slides the cylinder rod in the same direction as the slide displacement of the control sleeve due to pilot pressure to the inflow port. An actuator type control valve, characterized in that the actuator type control valve is configured to communicate with each other.

Claims

[Scope of utility model registration request]

A casing, a cylinder rod slidably provided in the casing, a piston provided in the cylinder rod, left and right pressure chambers separated by the piston and formed in the casing, the cylinder rod and the casing. a control sleeve slidably provided between the control sleeve and the casing; left and right pilot pressure introduction chambers formed by both ends of the control sleeve and the casing into which pilot pressure is introduced; Left and right output ports are formed around the periphery and communicate with the left and right pressure chambers at all times, an inflow port is formed on the inner periphery of the control sleeve and the pressure fluid flows in, and an inflow port is formed on the inner periphery of the control sleeve and the pressure fluid flows out. A state of communication between the left and right output ports formed by the control sleeve, the inner periphery, and the outer periphery of the cylinder rod, the inflow port, and the outflow port is controlled by relative displacement between the control sleeve and the cylinder rod. and a spool valve mechanism, the spool valve mechanism being configured to communicate with the inflow port an output port that slides the cylinder rod in the same direction as the control sleeve slides due to pilot pressure. An actuator type control valve featuring: