JPH01126879U - - Google Patents
Info
- Publication number
- JPH01126879U JPH01126879U JP2426988U JP2426988U JPH01126879U JP H01126879 U JPH01126879 U JP H01126879U JP 2426988 U JP2426988 U JP 2426988U JP 2426988 U JP2426988 U JP 2426988U JP H01126879 U JPH01126879 U JP H01126879U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- steering device
- vehicle speed
- front wheels
- piping system
- 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
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Description
第１図は本考案実施例の四輪操舵装置を示す全
体概略図、第２図は実施例装置のソレノイド切換
弁作動域説明図である。
１……第１油圧ポンプ（第１油圧源）、２……
第２油圧ポンプ（第２油圧源）、３……第１油圧
配管系、４……前輪パワーステアリングステム（
前輪パワーステアリング装置）、５……小回り操
舵システム（後輪大操舵装置）、６……第２油圧
配管系、７……後輪補助操舵システム（後輪大操
舵装置）、１４……連通ライン、１５……ソレノ
イド切換弁（切換手段）、３１，６１……送油ラ
イン。
FIG. 1 is an overall schematic diagram showing a four-wheel steering system according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the operating range of the solenoid switching valve of the embodiment. 1...first hydraulic pump (first hydraulic power source), 2...
2nd hydraulic pump (second hydraulic power source), 3...first hydraulic piping system, 4...front wheel power steering stem (
Front wheel power steering device), 5... Small turn steering system (large rear wheel steering device), 6... Second hydraulic piping system, 7... Rear wheel auxiliary steering system (large rear wheel steering device), 14... Communication line , 15... Solenoid switching valve (switching means), 31, 61... Oil feed line.
Claims (1)
の油圧源を有し、 前記油圧源のうち第１油圧源からの第１油圧配
管系を、前輪パワーステアリング装置に用いると
共に、所定車速以下の低速旋回時に前輪のパワー
アシスト油圧を導き後輪を前輪に対して逆相に大
きく転舵させる後輪大操舵装置に用い、 前記油圧源のうち第２油圧源からの第２油圧配
管系を、旋回時に車速に対応して後輪を前輪に対
して同相に小さく転舵させる後輪小操装置に用い
た四輪操舵装置において、 前記第１油圧配管系と第２油圧配管系の送油ラ
インを互いに連通する連通ラインを設け、且つ、
該連通ラインの途中に、少なくとも所定車速以下
の時に開とする切換手段を設けた事を特徴とする
四輪操舵装置。[Claims for Utility Model Registration] A system comprising at least two hydraulic power sources that generate hydraulic pressure in conjunction with each other, a first hydraulic piping system from a first hydraulic power source of the hydraulic power sources being used in a front wheel power steering device; , used in a large rear wheel steering device that guides the power assist hydraulic pressure of the front wheels and largely steers the rear wheels in the opposite phase with respect to the front wheels during a low-speed turn below a predetermined vehicle speed; In a four-wheel steering device in which a hydraulic piping system is used as a rear wheel small steering device that slightly steers the rear wheels in the same phase as the front wheels in response to the vehicle speed when turning, the first hydraulic piping system and the second hydraulic piping Provide a communication line that communicates the oil supply lines of the system with each other, and
A four-wheel steering device characterized in that a switching means that is opened at least when the vehicle speed is below a predetermined speed is provided in the middle of the communication line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2426988U JPH01126879U (en) | 1988-02-25 | 1988-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2426988U JPH01126879U (en) | 1988-02-25 | 1988-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01126879U true JPH01126879U (en) | 1989-08-30 |
Family
ID=31243979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2426988U Pending JPH01126879U (en) | 1988-02-25 | 1988-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01126879U (en) |
-
1988
- 1988-02-25 JP JP2426988U patent/JPH01126879U/ja active Pending