GB1486588A - Hydraulic control unit - Google Patents

Hydraulic control unit

Info

Publication number
GB1486588A
GB1486588A GB41076/74A GB4107674A GB1486588A GB 1486588 A GB1486588 A GB 1486588A GB 41076/74 A GB41076/74 A GB 41076/74A GB 4107674 A GB4107674 A GB 4107674A GB 1486588 A GB1486588 A GB 1486588A
Authority
GB
United Kingdom
Prior art keywords
valve
gerotor
shaft
rotation
distributing
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
GB41076/74A
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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
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
Priority claimed from US407776A external-priority patent/US3895888A/en
Application filed by TRW Inc filed Critical TRW Inc
Publication of GB1486588A publication Critical patent/GB1486588A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Pumps (AREA)

Abstract

1486588 Rotary positive-displacement fluid machines TRW Inc 20 Sept 1974 [19 Oct 1973] 41076/74 Heading F1F [Also in Division B7] A control unit 10 e.g. for a power steering system, comprises a gerotor mechanism 35 operated by a shaft 12, e.g. connected to a steering wheel 13, to meter the output flow from a pump 23 to a steering motor 14, a valve 102 distributing liquid to and from the gerotor mechanism, and a valve 41 directing the flow from the gerotor mechanism to one side or the other of motor 14 according to the direction of rotation of shaft 12. Valve 41 may be a rotary sleeve valve, as shown, or a rotary plate valve, Figs. 14 to 16 (not shown). Rotation of shaft 12 rotates outer, internally-lobed gerotor member 36 which causes limited rotational movement and then orbital movement of inner, externally-lobed gerotor member 37 coupled by members 40, 45 to movable valve-member 43 of valve 41. The extent of rotational movement of valve-member 43 depends on the torque applied to shaft 12 thereby controlling the flow to the steering motor and providing "feel". Abutments (80,81), Fig. 4 (not shown), limit the movement of valve-member 43 and a torsion bar 121 acts to bias the valve-member 43 into its neutral position, in which the output of pump 23 is returned to reservoir 27. Distributing valve-member 102 is connected for rotation with gerotor member 36 by screws 40a. If pump 23 fails, steering can still be effected by the pumping action of the gerotor mechanism. In Fig. 13 (not shown), the input shaft is coupled to the gerotor mechanism by a pin (151), and the distributing valve (160) is a plate type. In (Figs. 14 to 16) both the distributing valve (206) and the steering motor control valve (204) are the plate type. In Fig. 17 (not shown), the input shaft is coupled to the inner member of the gerotor mechanism, and the outer member of the mechanism is limited in its rotation, the steering motor control valve and the distributing valve being on opposite sides of the gerotor mechanism. In Figs. 18 and 19 (not shown), the input shaft is connected to the outer gerotor member via a toothed sleeve (401), and the outer member performs a rotating and orbiting movement.
GB41076/74A 1973-10-19 1974-09-20 Hydraulic control unit Expired GB1486588A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40777573A 1973-10-19 1973-10-19
US407776A US3895888A (en) 1973-10-19 1973-10-19 Hydrostatic control unit

Publications (1)

Publication Number Publication Date
GB1486588A true GB1486588A (en) 1977-09-21

Family

ID=27020004

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41076/74A Expired GB1486588A (en) 1973-10-19 1974-09-20 Hydraulic control unit

Country Status (1)

Country Link
GB (1) GB1486588A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421317A1 (en) * 1978-03-31 1979-10-26 Bendix Corp ROTARY VALVE
FR2459893A1 (en) * 1979-06-25 1981-01-16 Trw Inc FLOW REGULATOR BETWEEN A FLUID SOURCE AND AN ENGINE, IN PARTICULAR DIRECTION OF A VEHICLE
EP0078947A2 (en) * 1981-11-05 1983-05-18 Trw Inc. Control apparatus
EP0835798A1 (en) * 1996-10-10 1998-04-15 Eaton Corporation Steering control unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421317A1 (en) * 1978-03-31 1979-10-26 Bendix Corp ROTARY VALVE
FR2459893A1 (en) * 1979-06-25 1981-01-16 Trw Inc FLOW REGULATOR BETWEEN A FLUID SOURCE AND AN ENGINE, IN PARTICULAR DIRECTION OF A VEHICLE
EP0078947A2 (en) * 1981-11-05 1983-05-18 Trw Inc. Control apparatus
EP0078947A3 (en) * 1981-11-05 1984-02-22 Trw Inc. Control apparatus
EP0835798A1 (en) * 1996-10-10 1998-04-15 Eaton Corporation Steering control unit

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940919