JPH01126880U - - Google Patents
Info
- Publication number
- JPH01126880U JPH01126880U JP2427088U JP2427088U JPH01126880U JP H01126880 U JPH01126880 U JP H01126880U JP 2427088 U JP2427088 U JP 2427088U JP 2427088 U JP2427088 U JP 2427088U JP H01126880 U JPH01126880 U JP H01126880U
- Authority
- JP
- Japan
- Prior art keywords
- wheel steering
- power cylinder
- rear wheels
- cylinder
- drain pipe
- 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
- 230000007935 neutral effect Effects 0.000 claims description 2
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Description
第１図は本考案第１実施例の四輪操舵装置を示
す全体概略図、第２図は第１実施例装置での前輪
転舵角に対する後輪転舵角特性図、第３図は本考
案第２実施例の四輪操舵装置を示す全体概略図、
第４図は第２実施例装置のソレノイド方向切換弁
の改良案を示す図である。
１ｒ，１ｌ……前輪、２……前輪転舵機構、３
……フロントパワーシリンダ、３ｒ，３ｌ……シ
リンダ室、４……後輪転舵用パワーシリンダ、４
ｒ，４ｌ……シリンダ室、４１，４２……センタ
リングスプリング（中立位置保持機構）、５ｒ，
５ｌ……後輪、６ｒ，６ｌ……油圧管路、７……
リザーバ、８ｒ，８ｌ……ドレーン管路、９……
ソレノイド開閉弁、１５……ソレノイド方向切換
弁、１５ａ……逆相切換部、１５ｂ……同相切換
部。
Fig. 1 is an overall schematic diagram showing a four-wheel steering device according to the first embodiment of the present invention, Fig. 2 is a characteristic diagram of the rear wheel steering angle relative to the front wheel steering angle in the first embodiment of the device, and Fig. 3 is a diagram showing the characteristics of the rear wheel steering angle of the first embodiment of the device. An overall schematic diagram showing a four-wheel steering device of a second embodiment,
FIG. 4 is a diagram showing an improvement plan for the solenoid directional control valve of the second embodiment device. 1r, 1l...Front wheel, 2...Front wheel steering mechanism, 3
...Front power cylinder, 3r, 3l...Cylinder chamber, 4...Power cylinder for rear wheel steering, 4
r, 4l...Cylinder chamber, 41, 42...Centering spring (neutral position holding mechanism), 5r,
5l...Rear wheel, 6r, 6l...Hydraulic pipe, 7...
Reservoir, 8r, 8l...Drain pipe, 9...
Solenoid opening/closing valve, 15... Solenoid directional switching valve, 15a... Reverse phase switching section, 15b... In-phase switching section.
Claims (1)
容積が変化するフロントパワーシリンダと、 中立位置保持機構を有し、後輪を転舵する為に
設けられた後輪転舵用パワーシリンダと、 前記フロントパワーシリンダの２つのシリンダ
室と後輪転舵用パワーシリンダの２つのシリンダ
室とを夫々油密状態で連結する油圧管路と、 前記フロントパワーシリンダの左右シリンダ室
と作動油を溜めておくリザーバとを連結するドレ
ーン管路と、 前記ドレーン管路の途中に設けられ、後輪転舵
の必要時にのみドレーン管路を遮断するソレノイ
ド開閉弁と、 を備えている事を特徴とする四輪操舵装置。 ２ 前記請求項１記載の四輪操舵装置において、
前記油圧管路の途中には、後輪を前輪に対して逆
相に転舵させる逆相切換部と、後輪を前輪に対し
て同相に転舵させる同相切換部とを有するソレノ
イド方向切換弁を設けた事を特徴とする四輪操舵
装置。[Scope of Claim for Utility Model Registration] 1. A front power cylinder that changes the volume of two cylinder chambers in conjunction with a front wheel steering mechanism, and a neutral position holding mechanism, and is provided for steering the rear wheels. a power cylinder for steering rear wheels; a hydraulic conduit that connects two cylinder chambers of the front power cylinder and two cylinder chambers of the power cylinder for rear wheel steering in an oil-tight state; and left and right cylinders of the front power cylinder. A drain pipe connecting the chamber and a reservoir for storing hydraulic oil, and a solenoid on-off valve provided in the middle of the drain pipe to shut off the drain pipe only when rear wheel steering is necessary. A four-wheel steering device featuring: 2. The four-wheel steering system according to claim 1,
In the middle of the hydraulic conduit, there is a solenoid directional control valve having an anti-phase switching section that steers the rear wheels in a phase opposite to the front wheels, and an in-phase switching section that steers the rear wheels in the same phase as the front wheels. A four-wheel steering device characterized by being equipped with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2427088U JPH01126880U (en) | 1988-02-25 | 1988-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2427088U JPH01126880U (en) | 1988-02-25 | 1988-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01126880U true JPH01126880U (en) | 1989-08-30 |
Family
ID=31243981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2427088U Pending JPH01126880U (en) | 1988-02-25 | 1988-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01126880U (en) |
-
1988
- 1988-02-25 JP JP2427088U patent/JPH01126880U/ja active Pending
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