JPH0251970U

JPH0251970U -

Info

Publication number: JPH0251970U
Application number: JP13045588U
Authority: JP
Priority date: 1988-10-06
Filing date: 1988-10-06
Publication date: 1990-04-13

Description

[Brief explanation of drawings]

第１図および第２図は本考案に係る流体制御弁
装置の一実施例を示す要部拡大断面図、第３図は
本考案装置を適用して好適な動力舵取装置におけ
るパワーステアリング本体部を示す概略断面図で
ある。１……スタブ軸（入力軸）、２……ピニオン軸
（出力軸）、２ａ……ピニオン歯、３……トーシ
ヨンバー、４……ラツク、４ａ……ラツク歯、５
……セーフテイスプライン部、６……（バルブハ
ウジングを兼る）ボデイ、１０……回転型流路切
換弁（流体制御弁装置）、１１……ロータ、１２
……スリーブ、１１ａ，１１ｂ；１２ａ，１２ｂ
……通路溝、１３……流体供給孔、１４……流体
排出孔、１５……入りポート、１６……戻りポー
ト、１５ａ，１６ａ……ポート孔、２０……供給
側環状溝、２１……還流側環状溝、２４，２６…
…流体排出孔、２５……環状空間、Ｐ……オイル
ポンプ、Ｔ……オイルタンク、ＣＬ，ＣＲ……パ
ワーシリンダ左、右室。 1 and 2 are enlarged sectional views of main parts showing an embodiment of the fluid control valve device according to the present invention, and FIG. 3 is a power steering main body in a preferred power steering device to which the device of the present invention is applied. FIG. 1... Stub shaft (input shaft), 2... Pinion shaft (output shaft), 2a... Pinion tooth, 3... Torsion bar, 4... Rack, 4a... Rack tooth, 5
... Safety spline part, 6 ... Body (also serves as valve housing), 10 ... Rotary flow path switching valve (fluid control valve device), 11 ... Rotor, 12
...Sleeve, 11a, 11b; 12a, 12b
... Passage groove, 13 ... Fluid supply hole, 14 ... Fluid discharge hole, 15 ... Input port, 16 ... Return port, 15a, 16a ... Port hole, 20 ... Supply side annular groove, 21 ... Circulation side annular groove, 24, 26...
...Fluid discharge hole, 25...Annular space, P...Oil pump, T...Oil tank, CL, CR...Power cylinder left and right chambers.

Claims

[Claims for Utility Model Registration] (1) A rotor having two types of passage grooves in the circumferential direction that communicate with an inlet port and a return port, and a rotor that is fitted on the outer periphery of the rotor and selectively connected to each passage groove on the rotor side. A supply-side annular groove is provided on the outer periphery of the rotor and has a passage groove in the circumferential direction that communicates with the fluid and guides the fluid to the output port, and is connected to the input port-side passage groove of the rotor through a fluid supply hole that opens at a portion opposite to the passage groove. A rotary fluid control valve device comprising: a sleeve formed in the rotor; and a valve housing in which the rotor and the sleeve are disposed so as to be relatively rotationally displaceable therein, and the valve housing has the inlet port and the return port. The port hole of the entry port is inclined and connected to the supply side annular groove on the outer periphery of the sleeve,
A fluid control valve device characterized in that the center of the port is formed in the valve housing so as to face the fluid supply hole on the sleeve side. (2) A rotor that has two types of passage grooves in the circumferential direction that communicate with the inlet port and the return port, and a rotor that is fitted on the outer periphery of the rotor and selectively communicates with each passage groove on the rotor side to direct fluid to the output port. A supply side annular groove is formed on the outer circumferential portion of the rotor and has a passage groove in the circumferential direction and is connected to the inlet port side passage groove of the rotor through a fluid supply hole opening at a portion opposite thereto. A sleeve, in which a return side annular groove connected to a side return port side passage groove via a rotor internal space and a fluid discharge hole is formed on an outer peripheral portion offset from the supply side annular groove in the axial direction; In a rotary fluid control valve device comprising a valve housing in which a sleeve is disposed so as to be relatively rotationally displaceable, and a valve housing having the inlet port and the return port, an annular groove is inclined in an annular groove on the reflux side of the outer circumference of the sleeve. A fluid control valve device characterized in that a port hole of the return port connected to the valve housing is formed with the center of the port oriented toward the fluid discharge hole on the sleeve side.