JPH03130771U - - Google Patents
Info
- Publication number
- JPH03130771U JPH03130771U JP4139790U JP4139790U JPH03130771U JP H03130771 U JPH03130771 U JP H03130771U JP 4139790 U JP4139790 U JP 4139790U JP 4139790 U JP4139790 U JP 4139790U JP H03130771 U JPH03130771 U JP H03130771U
- Authority
- JP
- Japan
- Prior art keywords
- wheel steering
- rear wheel
- steering cylinder
- cylinder
- pressure
- 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
- 239000012530 fluid Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims 3
- 230000001105 regulatory effect Effects 0.000 claims 1
Landscapes
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Description
図面は、この考案の一実施例を示し、第１図は
、４輪操舵システムの一部を断面で示した概略構
成図、第２図は、後輪操舵シリンダのストローク
と後輪操舵力との関係を示すグラフ、第３図は、
後輪操舵特性を示すグラフ、第４図は、後輪操舵
角と後輪操舵圧との関係を示すグラフ、第５図は
、弁装置の機能によつて得られるステアリングハ
ンドル角と後輪操舵角との関係を示すグラフであ
る。
３……前輪操舵シリンダ、７……圧液供給源、
２０……後輪側液圧管路（後輪側液圧経路）、２
１……後輪操舵制御弁、２２……後輪操舵シリン
ダ、３６……電子コントローラ、４１……弁装置
、４５……弁スプール（遮断弁）、５５……弁体
（規制弁）。
The drawings show one embodiment of this invention, and Fig. 1 is a schematic cross-sectional view of a part of the four-wheel steering system, and Fig. 2 shows the stroke of the rear wheel steering cylinder and the rear wheel steering force. The graph shown in Figure 3 shows the relationship between
A graph showing the rear wheel steering characteristics, FIG. 4 is a graph showing the relationship between the rear wheel steering angle and the rear wheel steering pressure, and FIG. 5 is a graph showing the relationship between the rear wheel steering angle and the rear wheel steering pressure, and FIG. It is a graph showing the relationship with the angle. 3... Front wheel steering cylinder, 7... Pressure fluid supply source,
20... Rear wheel side hydraulic pressure line (rear wheel side hydraulic pressure path), 2
DESCRIPTION OF SYMBOLS 1... Rear wheel steering control valve, 22... Rear wheel steering cylinder, 36... Electronic controller, 41... Valve device, 45... Valve spool (cutoff valve), 55... Valve body (regulation valve).
Claims (1)
舵するための前輪操舵シリンダと、後輪を操舵す
るための後輪操舵シリンダと、後輪操舵シリンダ
に圧液を供給する圧液供給源と、圧液供給源と後
輪操舵シリンダとの間を接続する液圧経路と、こ
の液圧経路に介挿され、後輪操舵シリンダへの圧
液の供給を制御し、後輪操舵シリンダを駆動させ
る後輪操舵制御弁と、この後輪操舵制御弁の切換
作動を前輪の操舵角に応じて制御し、後輪操舵シ
リンダにより後輪を所望の操舵角に操舵させる制
御回路と、圧液供給源と後輪操舵制御弁との間の
液圧経路の部位から分岐され、低圧側に接続され
た分岐経路と、この分岐経路に介挿され、後輪操
舵シリンダに供給される圧液の圧力が所定圧以上
となつたときに開かれて、圧液供給源からの圧液
を低圧側に逃がす規制弁と、上記分岐経路に介挿
され、前輪操舵シリンダに対して機械的に連動し
て作動し、前輪の操舵角が所定操舵角以上になつ
たとき、分岐経路を閉じる遮断弁とを具備したこ
とを特徴とする自動車の４輪操舵装置。 A front wheel steering cylinder for steering the front wheels, a rear wheel steering cylinder for steering the rear wheels, a pressurized liquid supply source for supplying pressurized liquid to the rear wheel steering cylinders, and a pressurized liquid supply. a hydraulic pressure path that connects the source and the rear wheel steering cylinder, and a rear wheel steering device that is inserted in this hydraulic path and controls the supply of pressure fluid to the rear wheel steering cylinder and drives the rear wheel steering cylinder. a control valve, a control circuit that controls the switching operation of the rear wheel steering control valve according to the steering angle of the front wheels and causes the rear wheel steering cylinder to steer the rear wheels to a desired steering angle, a pressure fluid supply source, and the rear wheels. The pressure of the branch path branched from the hydraulic pressure path between the steering control valve and connected to the low pressure side and the pressure fluid inserted into this branch path and supplied to the rear wheel steering cylinder is equal to or higher than a predetermined pressure. A regulating valve is inserted in the above-mentioned branch path and operates mechanically in conjunction with the front wheel steering cylinder, which opens when the 1. A four-wheel steering system for an automobile, comprising: a cutoff valve that closes a branch path when the steering angle of the vehicle becomes equal to or greater than a predetermined steering angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4139790U JPH03130771U (en) | 1990-04-17 | 1990-04-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4139790U JPH03130771U (en) | 1990-04-17 | 1990-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03130771U true JPH03130771U (en) | 1991-12-27 |
Family
ID=31552028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4139790U Pending JPH03130771U (en) | 1990-04-17 | 1990-04-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03130771U (en) |
-
1990
- 1990-04-17 JP JP4139790U patent/JPH03130771U/ja active Pending
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