GB1535722A - Power-assisted rack-and-pinion steering gear for motor vehicles and rotary valves for use therein - Google Patents
Power-assisted rack-and-pinion steering gear for motor vehicles and rotary valves for use thereinInfo
- Publication number
- GB1535722A GB1535722A GB3464074A GB3464074A GB1535722A GB 1535722 A GB1535722 A GB 1535722A GB 3464074 A GB3464074 A GB 3464074A GB 3464074 A GB3464074 A GB 3464074A GB 1535722 A GB1535722 A GB 1535722A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grooves
- passages
- rotor
- groove
- passage
- 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
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
- B62D5/083—Rotary valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
Abstract
1535722 Power steering systems ADWEST ENG Ltd 3 Nov 1975 [6 Aug 1974] 34640/74 Heading B7H A rotary valve, particularly for use in a rack- and-pinion power-assisted steering system, comprises a valve sleeve 5 and a relatively rotatable hollow valve rotor 6 each having axial grooves 5b, 5d and 17, 20 for controlling fluid flow, the rotor having a radial passage 19 connecting its interior 18 to an outlet port 3, and at least one of the rotor grooves 20 being connected to its interior 18 by a restricting passage 21, which passage acts to create a back pressure and reduce valve noise. The sleeve 5 has annular grooves 12, 13, 14 separated by seals 22-25 grooves 12 and 14 being connected to opposite sides of a working cylinder and groove 13 communicating with an inlet 2. Groove 12 is connected to axial grooves 5b by passages 5a and groove 14 to grooves 5d by passages 5c whilst groove 13 is connected to grooves 17 of the rotor by passages 16. With the rotor biased to the null state by torsion rod 8 fluid from inlet 2 passes to groove 13 and then via passages 16, grooves 17, grooves 5b, 5d, grooves 20, and passages 21 to the rotor interior and finally via passage 19 to outlet 3. As the rotor is rotated, say clockwise (Fig. 3, not shown), communication between grooves 17 and 5d and between grooves 20 and 5b is cut off so fluid flows from inlet 2 to one side of the working cylinder via groove 13, passages 16, grooves 17 and 5b and passages 5a and fluid is exhausted from the other side via passages 5c, grooves 5d and 20, passages 21, the rotor interior 18 and passage 19.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3464074A GB1535722A (en) | 1975-11-03 | 1975-11-03 | Power-assisted rack-and-pinion steering gear for motor vehicles and rotary valves for use therein |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3464074A GB1535722A (en) | 1975-11-03 | 1975-11-03 | Power-assisted rack-and-pinion steering gear for motor vehicles and rotary valves for use therein |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1535722A true GB1535722A (en) | 1978-12-13 |
Family
ID=10368159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3464074A Expired GB1535722A (en) | 1975-11-03 | 1975-11-03 | Power-assisted rack-and-pinion steering gear for motor vehicles and rotary valves for use therein |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1535722A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2437968A1 (en) * | 1978-10-06 | 1980-04-30 | Zahnradfabrik Friedrichshafen | POWER STEERING MECHANISM |
FR2445255A1 (en) * | 1978-12-29 | 1980-07-25 | Zahnradfabrik Friedrichshafen | ROTARY DRAWER VALVE FOR POWER STEERING MECHANISMS OF MOTOR VEHICLES |
FR2511466A1 (en) * | 1981-08-11 | 1983-02-18 | Dba | ROTARY HYDRAULIC DISPENSER FOR SERVOMECISM |
US4378030A (en) * | 1979-07-30 | 1983-03-29 | Ford Motor Company | Power steering gear mechanism with rotary control valve |
FR2517792A2 (en) * | 1981-12-03 | 1983-06-10 | Dba | ROTARY HYDRAULIC DISPENSER FOR SERVOMECISM |
FR2519402A1 (en) * | 1982-01-06 | 1983-07-08 | Dba | ROTARY DISPENSER FOR HYDRAULIC SERVOMECISM |
GB2145383A (en) * | 1983-08-20 | 1985-03-27 | Supra Steering Limited | Control valve for use in a power-assisted steering mechanism |
US4765369A (en) * | 1986-04-28 | 1988-08-23 | Bendix Espana S.A. | Hydraulic distributor, particularly for a power-assisted steering system for a vehicle |
DE102005020678B4 (en) * | 2004-05-06 | 2011-11-17 | Jtekt Europe S.A.S. | Servo valve for hydraulically assisted steering |
-
1975
- 1975-11-03 GB GB3464074A patent/GB1535722A/en not_active Expired
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2437968A1 (en) * | 1978-10-06 | 1980-04-30 | Zahnradfabrik Friedrichshafen | POWER STEERING MECHANISM |
FR2445255A1 (en) * | 1978-12-29 | 1980-07-25 | Zahnradfabrik Friedrichshafen | ROTARY DRAWER VALVE FOR POWER STEERING MECHANISMS OF MOTOR VEHICLES |
US4378030A (en) * | 1979-07-30 | 1983-03-29 | Ford Motor Company | Power steering gear mechanism with rotary control valve |
FR2511466A1 (en) * | 1981-08-11 | 1983-02-18 | Dba | ROTARY HYDRAULIC DISPENSER FOR SERVOMECISM |
EP0072712A1 (en) * | 1981-08-11 | 1983-02-23 | BENDIX France | Rotary hydraulic distributor for a servomechanism |
EP0082027A1 (en) * | 1981-12-03 | 1983-06-22 | BENDIX France | Rotary hydraulic distributor for a servomechanism with an asymmetrical jack |
FR2517792A2 (en) * | 1981-12-03 | 1983-06-10 | Dba | ROTARY HYDRAULIC DISPENSER FOR SERVOMECISM |
FR2519402A1 (en) * | 1982-01-06 | 1983-07-08 | Dba | ROTARY DISPENSER FOR HYDRAULIC SERVOMECISM |
EP0083541A2 (en) * | 1982-01-06 | 1983-07-13 | BENDIX France | Rotary distributor for a hydraulic servomechanism |
EP0083541A3 (en) * | 1982-01-06 | 1983-12-14 | Societe Anonyme D.B.A. | Rotary distributor for a hydraulic servomechanism |
GB2145383A (en) * | 1983-08-20 | 1985-03-27 | Supra Steering Limited | Control valve for use in a power-assisted steering mechanism |
US4765369A (en) * | 1986-04-28 | 1988-08-23 | Bendix Espana S.A. | Hydraulic distributor, particularly for a power-assisted steering system for a vehicle |
DE102005020678B4 (en) * | 2004-05-06 | 2011-11-17 | Jtekt Europe S.A.S. | Servo valve for hydraulically assisted steering |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19951102 |