JPH0168982U - - Google Patents

Info

Publication number
JPH0168982U
JPH0168982U JP1987163478U JP16347887U JPH0168982U JP H0168982 U JPH0168982 U JP H0168982U JP 1987163478 U JP1987163478 U JP 1987163478U JP 16347887 U JP16347887 U JP 16347887U JP H0168982 U JPH0168982 U JP H0168982U
Authority
JP
Japan
Prior art keywords
sliding hole
valve body
small diameter
diameter part
spool valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1987163478U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987163478U priority Critical patent/JPH0168982U/ja
Priority to US07/262,395 priority patent/US4923170A/en
Publication of JPH0168982U publication Critical patent/JPH0168982U/ja
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
    • B62D5/087—Sliding spool valves
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/14—Control of fluid pressure with auxiliary non-electric power
    • G05D16/18—Control of fluid pressure with auxiliary non-electric power derived from an external source
    • G05D16/187—Control of fluid pressure with auxiliary non-electric power derived from an external source using pistons within the main valve

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Sliding Valves (AREA)

Description

【図面の簡単な説明】
第１図および第２図は本考案の一実施例を示す
ものであり、第１図は油圧回路図、第２図は油圧
制御弁の拡大縦断面図、第３図は従来の油圧制御
弁の縦断面図、第４図は他の従来技術におけるス
プール弁体の斜視図である。 ３０…油圧制御弁、３２…入口ポート、３３…
出口ポート、３４…弁本体、３４ａ…摺動孔、３
５…スプール弁体、３５ａ…小径部、４５…可変
オリフイス、５２…環状油路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 横断面円形の摺動孔を有するとともに軸方向に
    間隔をあけた位置で摺動孔内面に開口する入口ポ
    ートおよび出口ポートを有する弁本体と、軸方向
    摺動可能にして弁本体に嵌合されるとともに入口
    および出口ポート間の連通度合を制御する可変オ
    リフイスを前記弁本体と共働して形成するスプー
    ル弁体とを備える油圧制御弁において、スプール
    弁体には、可変オリフイスを形成すべく、摺動孔
    内面との間に環状油路を形成する小径部が摺動孔
    と同軸に設けられ、該小径部の外径は軸方向全長
    にわたつて一定に設定されることを特徴とする油
    圧制御弁。
JP1987163478U 1987-10-26 1987-10-26 Pending JPH0168982U (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1987163478U JPH0168982U (ja) 1987-10-26 1987-10-26
US07/262,395 US4923170A (en) 1987-10-26 1988-10-25 Hydraulic pressure control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987163478U JPH0168982U (ja) 1987-10-26 1987-10-26

Publications (1)

Publication Number Publication Date
JPH0168982U true JPH0168982U (ja) 1989-05-08

Family

ID=15774639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987163478U Pending JPH0168982U (ja) 1987-10-26 1987-10-26

Country Status (2)

Country Link
US (1) US4923170A (ja)
JP (1) JPH0168982U (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0241874U (ja) * 1988-09-14 1990-03-22
JPH085392B2 (ja) * 1989-06-15 1996-01-24 三菱自動車工業株式会社 コントロールバルブ
GB2238279B (en) * 1989-11-22 1993-11-24 Trw Cam Gears Ltd A power assisted vehicle steering system
WO2006048453A1 (de) * 2004-11-04 2006-05-11 Continental Teves Ag & Co. Ohg Servolenkung für kraftfahrzeuge
US7308848B2 (en) * 2004-12-02 2007-12-18 Sarcos Investments Lc Pressure control valve having intrinsic feedback system
US7284471B2 (en) * 2004-12-02 2007-10-23 Sarcos Investments Lc Pressure control valve having intrinsic mechanical feedback system
US8051764B2 (en) * 2007-02-28 2011-11-08 Raytheon Company Fluid control system having selective recruitable actuators
US8061261B2 (en) * 2007-02-28 2011-11-22 Raytheon Company Antagonistic fluid control system for active and passive actuator operation
US7779863B2 (en) * 2007-06-29 2010-08-24 Raytheon Sarcos, Llc Pressure control valve having an asymmetric valving structure
WO2015181934A1 (ja) * 2014-05-29 2015-12-03 株式会社小松製作所 油圧駆動装置
DE102020106440A1 (de) * 2020-03-10 2021-09-16 Danfoss Power Solutions Aps Hydraulische Lenkeinheit
DE102020106438B4 (de) 2020-03-10 2022-03-31 Danfoss Power Solutions Aps Fluidsteuereinrichtung, insbesondere als Teil einer hydraulischen Lenkeinheit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589401A (en) * 1969-07-18 1971-06-29 Case Co J I Pressure modulating valve
JPS5120329A (en) * 1974-08-07 1976-02-18 Honda Motor Co Ltd Sharyono doryokusokosochi
US4760892A (en) * 1986-09-02 1988-08-02 Ford Motor Company Variable assist power steering system using electronic pressure control

Also Published As

Publication number Publication date
US4923170A (en) 1990-05-08

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