Variable-ratio hydraulic steering system
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0702708
(1996-09-03)
|
우선권정보 |
DE-4407308 (1994-03-04) |
국제출원번호 |
PCT/DE95/002
(1995-02-23)
|
§371/§102 date |
19960903
(19960903)
|
국제공개번호 |
WO-9523723
(1995-09-08)
|
발명자
/ 주소 |
- Bergmann Erhard,DEX
- Schildmann Manfred,DEX
- Voss Gerhard,DEX
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
6 |
초록
▼
The invention changes over to another steering ratio automatically and very safely on the transition from servo to emergency operation. In the steering system, only a few of the lines (13) link the metering pump (10) to one of the cylinder connections (7, 8) and in each of the other lines (13') ther
The invention changes over to another steering ratio automatically and very safely on the transition from servo to emergency operation. In the steering system, only a few of the lines (13) link the metering pump (10) to one of the cylinder connections (7, 8) and in each of the other lines (13') there is a changeover unit (16) which also links the lines (13) to the cylinder connections (7, 8) or the delivery connection (6) depending on the method of operation. These steering systems are used in mobile systems, especially slow-moving vehicles.
대표청구항
▼
[ We claim:] [1.] Hydraulic steering device with translation ratio, which comprises cylinder connections, a control valve, and a metering pump, wherein the control valve includes a control piston, controllable by a steering wheel, and a control sleeve, mechanically connected to a rotor of the meteri
[ We claim:] [1.] Hydraulic steering device with translation ratio, which comprises cylinder connections, a control valve, and a metering pump, wherein the control valve includes a control piston, controllable by a steering wheel, and a control sleeve, mechanically connected to a rotor of the metering pump, and wherein the control piston and the control sleeve are furnished with channels cooperating and communicating with each other and with the metering pump, and wherein the metering pump has several displacement chambers, of which displacement chambers several are continuously connected to one of the cylinder connections, and the remaining displacement chambers are connected by a switching unit to either one of the cylinder connections or to a discharge connector,characterized in that a metering pump (10) is employed which has exclusively parallel-disposed displacement chambers with first and second lines (13, 13') of which first lines (13). one or several of the first lines (13), however at the most one less than the number of lines present, connect the metering pump (10) directly to one of the cylinder connections (7, 8), wherein the switching unit (16) is coordinated to the remaining second lines (13'), and wherein an adjustment unit of the switching unit (16), on the one hand, is subjected to the pressure present upstream of the metering pump (10), in the position connecting the metering pump (10) to one of the cylinder connections (7, 8) and, on the other hand, to the pressure present downstream of the metering pump (10), in the position connecting the metering pump (10) to the discharge connector (6) or to a feed connector (5).
이 특허에 인용된 특허 (6)
-
Lech Richard J. (Lockport IL), Auxiliary power steering system.
-
Goodbary ; Edgar R. ; Bartley ; Francis A., Dual steering system for vehicles.
-
Tischer Werner (Heubach-Lautern DEX), Hydrostatic steering device.
-
Miller James A. (Cedar Falls IA) Eagles Derek M. (Hudson IA), Open center load sensing hydraulic system.
-
Gage Douglas M. (Dubuque IA), Secondary hydraulic steering system.
-
McGovern Donald E. (Dubuque IA) Irwin Stanley L. (Dubuque IA), Secondary hydraulic steering system.
이 특허를 인용한 특허 (2)
-
Sheppard, Peter H.; Giurlando, Kenneth, Method of relieving power steering assist and a power steering system utilizing the method.
-
Moser, Martin; Schneckenburger, Reinhold, Steering system for a vehicle.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.