JPS6344879U - - Google Patents
Info
- Publication number
- JPS6344879U JPS6344879U JP13924786U JP13924786U JPS6344879U JP S6344879 U JPS6344879 U JP S6344879U JP 13924786 U JP13924786 U JP 13924786U JP 13924786 U JP13924786 U JP 13924786U JP S6344879 U JPS6344879 U JP S6344879U
- Authority
- JP
- Japan
- Prior art keywords
- steering
- hydraulic
- steering mechanism
- hydraulic cylinder
- hydraulic oil
- 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
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000010720 hydraulic oil Substances 0.000 claims 5
- 230000001105 regulatory effect Effects 0.000 claims 3
- 230000008844 regulatory mechanism Effects 0.000 description 3
Landscapes
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Description
第１図は本考案に係る第１及び第２操舵規制機
構の一例を示すものであつて第４図の―に沿
つて見た断面図、第２図は第１図の操舵規制機構
を備えた車両全体を表す機能ブロツク図、第３図
は第４図の―に沿つて見た外観図、第４図は
第２図の後輪操舵機構と第１及び第２操舵規制機
構の断面図、第５図は第１図の―に沿つて見
た部分断面図、第６図は第２図のマイクロコンピ
ユータにて実行されるプログラムに対応したフロ
ーチヤート、及び第７図は舵角比特性を示すグラ
フである。
符号の説明、Ａ……前輪操舵機構、Ｂ……後輪
操舵機構、Ｃ……第１操舵規制機構、Ｄ……第２
操舵規制機構、Ｅ……油圧制御装置、Ｆ……電気
制御装置、ＦＷ１，ＦＷ２……前輪、ＲＷ１，Ｒ
Ｗ２……後輪、２１……ステツプモータ、２２…
…制御バルブ装置、２２ａ……入力軸、２２ｂ２
……油圧シリンダ、２２ｄ……出力軸、２２ｄ１
，２２ｄ４……大径部、２２ｄ２，２２ｄ３，２
２ｄ５……切欠部、２２ｋ……ピニオンギヤ、２
３……ステアリングリンク機構、２３ｂ……ラツ
クバー、２４……パワーシリンダ、３２，３３…
…スリーブ、３４，３６，５１……ピストン、３
５，３７，５３……スプリング、６１，６２……
油圧ポンプ、６４，６５，６６，６７……電磁切
換えバルブ、７１……前輪操舵角センサ、７２…
…車速センサ、７３……後輪操舵角センサ、７４
……マイクロコンピユータ、８１……バツテリ。
FIG. 1 shows an example of the first and second steering restriction mechanisms according to the present invention, and is a cross-sectional view taken along the line - in FIG. 4, and FIG. 2 shows an example of the steering restriction mechanism shown in FIG. Figure 3 is an external view taken along the line - in Figure 4, Figure 4 is a sectional view of the rear wheel steering mechanism and the first and second steering regulation mechanisms in Figure 2. , Fig. 5 is a partial sectional view taken along - in Fig. 1, Fig. 6 is a flowchart corresponding to the program executed by the microcomputer in Fig. 2, and Fig. 7 is a steering angle ratio characteristic. This is a graph showing. Explanation of symbols, A...Front wheel steering mechanism, B...Rear wheel steering mechanism, C...First steering regulation mechanism, D...Second
Steering regulation mechanism, E...hydraulic control device, F...electric control device, FW1, FW2...front wheel, RW1, R
W2...Rear wheel, 21...Step motor, 22...
...Control valve device, 22a...Input shaft, 22b2
...Hydraulic cylinder, 22d...Output shaft, 22d1
, 22d4...large diameter section, 22d2, 22d3, 2
2d5...Notch, 22k...Pinion gear, 2
3... Steering link mechanism, 23b... Rack bar, 24... Power cylinder, 32, 33...
... Sleeve, 34, 36, 51 ... Piston, 3
5, 37, 53... Spring, 61, 62...
Hydraulic pump, 64, 65, 66, 67... Electromagnetic switching valve, 71... Front wheel steering angle sensor, 72...
... Vehicle speed sensor, 73 ... Rear wheel steering angle sensor, 74
...Microcomputer, 81...lol.
Claims (1)
み込まれ作動油の給配に応じて前記操舵機構に後
輪を操舵するための駆動力を付与する油圧アクチ
ユエータと、前輪の操舵に応じて電気的に駆動さ
れる電気アクチユエータと、前記電気アクチユエ
ータにより駆動されて油圧ポンプから前記油圧ア
クチユエータへの作動油の供給及び前記油圧アク
チユエータからリザーバへの作動油の排出を制御
する制御バルブとからなる後輪操舵装置を有する
前後輪操舵車に適用され、前記操舵機構の一部に
組み付けられた油圧シリンダと、前記油圧シリン
ダに摺動可能に収容され第１位置にて前記操舵機
構の一部と係合することにより前記操舵機構によ
る後輪の操舵を規制しかつ第２位置にて前記係合
を解除することにより前記規制を解除する操舵規
制用ピストンと、前記操舵規制用ピストンを常時
第１位置に付勢するスプリングと、励磁状態にて
前記油圧ポンプから前記油圧シリンダへの作動油
の供給を許容することにより前記操舵規制用ピス
トンを第２位置に駆動しかつ非励磁状態にて前記
油圧シリンダから前記リザーバへの作動油の排出
を許容することにより前記操舵規制用ピストンの
第２位置への駆動を解除する電磁バルブとを備え
たことを特徴とする前後輪操舵車における後輪の
操舵規制装置。 a steering mechanism that steers the rear wheels; a hydraulic actuator that is incorporated in the steering mechanism and that applies driving force to the steering mechanism to steer the rear wheels according to the supply and distribution of hydraulic oil; and a control valve driven by the electric actuator to control supply of hydraulic oil from a hydraulic pump to the hydraulic actuator and discharge of hydraulic oil from the hydraulic actuator to a reservoir. Applied to a front and rear wheel steered vehicle having a steering device, the hydraulic cylinder is assembled to a part of the steering mechanism, and the hydraulic cylinder is slidably accommodated in the hydraulic cylinder and engages with the part of the steering mechanism at a first position. a steering restriction piston that restricts the steering of the rear wheels by the steering mechanism and releases the restriction by releasing the engagement in a second position; and a steering restriction piston that is always in the first position. The steering regulating piston is driven to the second position by urging a spring and allowing hydraulic oil to be supplied from the hydraulic pump to the hydraulic cylinder in an energized state, and from the hydraulic cylinder in a de-energized state. A rear wheel steering regulating device in a front and rear wheel steered vehicle, comprising: an electromagnetic valve that releases the driving of the steering regulating piston to the second position by allowing discharge of hydraulic oil into the reservoir. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13924786U JPS6344879U (en) | 1986-09-10 | 1986-09-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13924786U JPS6344879U (en) | 1986-09-10 | 1986-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6344879U true JPS6344879U (en) | 1988-03-25 |
Family
ID=31044970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13924786U Pending JPS6344879U (en) | 1986-09-10 | 1986-09-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6344879U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01266075A (en) * | 1988-04-19 | 1989-10-24 | Mazda Motor Corp | Device for steering rear wheel of vehicle |
-
1986
- 1986-09-10 JP JP13924786U patent/JPS6344879U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01266075A (en) * | 1988-04-19 | 1989-10-24 | Mazda Motor Corp | Device for steering rear wheel of vehicle |
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