GB1446880A - Controller for fluid pressure operated steering systems - Google Patents

Controller for fluid pressure operated steering systems

Info

Publication number
GB1446880A
GB1446880A GB5093373A GB5093373A GB1446880A GB 1446880 A GB1446880 A GB 1446880A GB 5093373 A GB5093373 A GB 5093373A GB 5093373 A GB5093373 A GB 5093373A GB 1446880 A GB1446880 A GB 1446880A
Authority
GB
United Kingdom
Prior art keywords
valve
cavity
sleeves
sleeve
fluid
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.)
Expired
Application number
GB5093373A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danfoss AS
Original Assignee
Danfoss AS
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 by Danfoss AS filed Critical Danfoss AS
Publication of GB1446880A publication Critical patent/GB1446880A/en
Expired 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
    • B62D5/09—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 means for actuating valves
    • B62D5/093—Telemotor driven by steering wheel movement
    • B62D5/097—Telemotor driven by steering wheel movement gerotor type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
    • F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Multiple-Way Valves (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Power Steering Mechanism (AREA)
  • Hydraulic Motors (AREA)

Abstract

1446880 Steering valves DANFOSS AS 2 Nov 1973 [2 Nov 1972] 50933/73 Heading B7H In a controller for use in hydraulic steering systems comprising a valve including two cooperable valve sleeves 17, 18, a rotary fluid motor 10 having a rotary member 21, a coupling 20, such as an Oldham coupling, which extends into a cavity 22 in the rotary member 21 and connects it to one of the valve sleeves, 18, the other valve sleeve 17 being connected to a control input element 14 which provides limited relative rotation of the two valve sleeves followed by their common rotation, further comprising an inlet and outlet 2, 4 for connection and return to a source of fluid under pressure and a pair of fluid ports 6, 7, Fig. 10, for connection to the system 8 under control, fluid pressure in the inner valve sleeve 17 serves to effect a seal to prevent leakage from working chambers of the motor 10 into the cavity 22. As seen in Fig. 1 the seal is created at the periphery of a flange 30 provided on part 23 of the coupling. Part 23, also has a radial projection 36, Fig. 9, which engages in matching recesses 37 at the free end face of valve sleeve 18 and in larger recesses 28 at the end face of inner sleeve 17, thus allowing relative rotation of the sleeves 17, 18 limited by the recesses 38. A spring 39 returns both sleeves to their neutral position upon completion of each steering movement. A combination valve 43 has a closure member 44 which operates as a return valve and opens when neutral-position holes 34, Fig. 8, formed in sleeves 17, 18 are throttled, the interior 31 of sleeve 17 communicating with the discharge port 4 only by holes 34 which are gradually closed as the steering shaft 14 is rotated. Sealing flange 30 is pressed against end disc 9 by pump pressure obtaining in pressure chamber 29 so that cavity 22 is sealed off, and if oil leakage from the displacement chambers of the rotary motor 10 passes into cavity 22 the pressure there rises immediately so that no further leakage occurs. If alternatively the cavity 22 is permanently in communication with interior 31 of sleeve 71 then a seal is provided by means of the fluid in chamber 31 which thus prevents leakage from the working chambers of motor 10 into the cavity 22.
GB5093373A 1972-11-02 1973-11-02 Controller for fluid pressure operated steering systems Expired GB1446880A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2253575A DE2253575C3 (en) 1972-11-02 1972-11-02 Hydraulic control devices for steering systems, in particular for vehicle steering systems

Publications (1)

Publication Number Publication Date
GB1446880A true GB1446880A (en) 1976-08-18

Family

ID=5860621

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5093373A Expired GB1446880A (en) 1972-11-02 1973-11-02 Controller for fluid pressure operated steering systems

Country Status (11)

Country Link
US (1) US3880554A (en)
JP (1) JPS5245575B2 (en)
BE (1) BE805774A (en)
CH (1) CH561853A5 (en)
DD (1) DD112500A5 (en)
DE (1) DE2253575C3 (en)
DK (1) DK133199C (en)
FR (1) FR2205877A5 (en)
GB (1) GB1446880A (en)
IT (1) IT996865B (en)
NL (1) NL7315018A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000089A (en) * 1977-06-11 1979-01-04 Bendiberica Sa Power steering mechanism
GB2236289A (en) * 1989-09-09 1991-04-03 Danfoss As Hydraulic steering units

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931711A (en) * 1974-11-06 1976-01-13 Trw Inc. Controller assembly
US4076462A (en) * 1976-07-26 1978-02-28 W. H. Nichols Company Combined distributor and bypass valve for fluid actuated pump or motor
DE2830292C2 (en) * 1978-07-10 1980-08-07 Danfoss A/S, Nordborg (Daenemark) Hydraulic control unit for the servomotor of a steering device
DE2906183C2 (en) * 1979-02-17 1986-09-18 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Hydrostatic steering device for automobiles
US4494915A (en) * 1979-06-25 1985-01-22 White Hollis Newcomb Jun Hydrostatic steering unit with cylindrical slide member within clindrical valve sleeve
DE3031230C2 (en) * 1980-08-19 1986-03-13 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Hydrostatic power steering device
DE3228345A1 (en) * 1982-07-29 1984-02-02 Günter 8882 Lauingen Stein CONTROL DEVICE FOR LIQUID OR GASEOUS MEDIUM
US4587886A (en) * 1983-04-28 1986-05-13 Jidosha Kiki Co., Ltd. Power steering device
FR2561366B1 (en) * 1984-02-07 1986-12-05 Charbonnages De France DEVICE FOR SUPPLYING GAS TO A FLUIDIZING GRID WITH MULTIPLE FLUID CIRCUITS
DE3504993A1 (en) * 1985-02-14 1986-08-14 Danfoss A/S, Nordborg CONTROL UNIT FOR HYDROSTATIC AUXILIARY STEERING DEVICES
US5136844A (en) * 1990-10-11 1992-08-11 Eaton Corportaion Controller with reduced travel limit slip
US7255544B2 (en) * 2003-10-23 2007-08-14 Parker-Hannifin Housing including shock valves for use in a gerotor motor
DE102008063500B4 (en) * 2008-12-17 2012-06-14 Sauer-Danfoss Aps Hydraulic machine
CN101885349A (en) * 2010-07-12 2010-11-17 尹凤金 Integral multifunctional all-hydraulic steering gear
CN105805351A (en) * 2016-04-19 2016-07-27 沈阳工业大学通益科技有限公司 Multiport valve of oil field
JP7242239B2 (en) * 2018-10-09 2023-03-20 仁科工業株式会社 power steering valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289542A (en) * 1963-10-29 1966-12-06 Lawrence Machine & Mfg Company Hydraulic motor or pump
US3286645A (en) * 1965-07-09 1966-11-22 Char Lynn Co Rotary fluid pressure device
US3302584A (en) * 1965-09-01 1967-02-07 Char Lynn Co Valving arrangement for fluid pressure device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000089A (en) * 1977-06-11 1979-01-04 Bendiberica Sa Power steering mechanism
GB2000089B (en) * 1977-06-11 1982-03-17 Bendiberica Sa Power steering mechanism
GB2236289A (en) * 1989-09-09 1991-04-03 Danfoss As Hydraulic steering units
GB2236289B (en) * 1989-09-09 1993-09-22 Danfoss As Hydraulic steering units

Also Published As

Publication number Publication date
CH561853A5 (en) 1975-05-15
US3880554A (en) 1975-04-29
IT996865B (en) 1975-12-10
DE2253575A1 (en) 1974-05-22
DK133199C (en) 1976-09-13
NL7315018A (en) 1974-05-06
DE2253575B2 (en) 1974-09-12
JPS5245575B2 (en) 1977-11-17
DK133199B (en) 1976-04-05
BE805774A (en) 1974-02-01
FR2205877A5 (en) 1974-05-31
JPS4976236A (en) 1974-07-23
DE2253575C3 (en) 1975-04-24
DD112500A5 (en) 1975-04-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee