JPH0451869U - - Google Patents
Info
- Publication number
- JPH0451869U JPH0451869U JP9524890U JP9524890U JPH0451869U JP H0451869 U JPH0451869 U JP H0451869U JP 9524890 U JP9524890 U JP 9524890U JP 9524890 U JP9524890 U JP 9524890U JP H0451869 U JPH0451869 U JP H0451869U
- Authority
- JP
- Japan
- Prior art keywords
- steering angle
- pinion
- output shaft
- cam surface
- steering
- 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
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Description
第１図は本考案に係る四輪操舵装置の油圧切換
弁を適用した四輪操舵車の概略構成図、第２図は
本考案に係る四輪操舵装置の油圧切換弁の一実施
例を示す要部切欠側面図、第３図は第２図の矢線
−に沿う断面図、第４図は第３図の油圧切換
弁の作動を示す図、第５図は従来の四輪操舵車の
概略構成図である。
１……エンジン、２……油圧ポンプ、３……前
輪用パワーステアリング装置、５……パワーステ
アリングギヤアセンブリ、６……パワーステアリ
ングシリンダ、７……後輪用パワーステアリング
装置、８……パワーシリンダ、９……復帰ばね機
構、１５……切換弁、１７……前輪、１９……後
輪、２０……ケーシング、２１……出力軸、２１
ａ，２１ｂ……ピニオン、２２……ラツク、２３
……バルブケース、２４……インターナルギヤ、
３０……アダプタ、３１，３５……固定ナツト、
３２……スプール、３３……プラグ、３７……シ
ール部材。
Fig. 1 is a schematic configuration diagram of a four-wheel steering vehicle to which the hydraulic switching valve of the four-wheel steering system according to the present invention is applied, and Fig. 2 shows an embodiment of the hydraulic switching valve of the four-wheel steering system according to the invention. 3 is a cross-sectional view along the arrow line - in FIG. 2, FIG. 4 is a diagram showing the operation of the hydraulic switching valve in FIG. 3, and FIG. 5 is a diagram of a conventional four-wheel steering vehicle. It is a schematic configuration diagram. DESCRIPTION OF SYMBOLS 1... Engine, 2... Hydraulic pump, 3... Power steering device for front wheels, 5... Power steering gear assembly, 6... Power steering cylinder, 7... Power steering device for rear wheels, 8... Power cylinder , 9...Return spring mechanism, 15...Switching valve, 17...Front wheel, 19...Rear wheel, 20...Casing, 21...Output shaft, 21
a, 21b...Pinion, 22...Rack, 23
... Valve case, 24 ... Internal gear,
30...Adapter, 31, 35...Fixing nut,
32... Spool, 33... Plug, 37... Seal member.
Claims (1)
装置の出力軸の下端に操舵用のピニオンと別に形
成された第２のピニオンと、前記パワーステアリ
ング装置のケーシングに回転可能に支持され、前
記第２のピニオンと噛合して前記出力軸と共に回
転し、且つ外周面にカム面が形成されたインター
ナルギヤと、前記ケーシングに装着され２つのポ
ート及びこれらの連通する連通路が形成されたプ
ラグと、前記インターナルギヤと前記プラグとの
間に介在され、一端が前記カム面に当接し他端が
前記連通路に嵌挿されて前記カム面により駆動さ
れ、前記出力軸が舵角０の位置から所定舵角に達
するまでの間前記連通路を開口し、前記所定舵角
以上になつたときに前記連通路を閉塞するスプー
ルとを備えたことを特徴とする四輪操舵装置の油
圧切換弁。 A second pinion is formed separately from a steering pinion at the lower end of the output shaft of the rack-and-pinion power steering device, and the second pinion is rotatably supported by the casing of the power steering device and meshes with the second pinion. an internal gear that rotates together with the output shaft and has a cam surface formed on its outer peripheral surface; a plug that is attached to the casing and has two ports and a communication path that communicates therewith; and the internal gear; The output shaft is interposed between the plug and the cam surface, one end is in contact with the cam surface, and the other end is fitted into the communication path and driven by the cam surface, so that the output shaft reaches a predetermined steering angle from a zero steering angle position. A hydraulic switching valve for a four-wheel steering system, comprising: a spool that opens the communication passage until the steering angle exceeds the predetermined steering angle, and closes the communication passage when the steering angle exceeds the predetermined steering angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9524890U JPH0451869U (en) | 1990-09-11 | 1990-09-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9524890U JPH0451869U (en) | 1990-09-11 | 1990-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0451869U true JPH0451869U (en) | 1992-04-30 |
Family
ID=31833833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9524890U Pending JPH0451869U (en) | 1990-09-11 | 1990-09-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0451869U (en) |
-
1990
- 1990-09-11 JP JP9524890U patent/JPH0451869U/ja active Pending
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