JPS6448365U

JPS6448365U -

Info

Publication number: JPS6448365U
Application number: JP14480087U
Authority: JP
Priority date: 1987-09-22
Filing date: 1987-09-22
Publication date: 1989-03-24
Anticipated expiration: 2002-09-22
Also published as: JPH0518228Y2

Description

[Brief explanation of the drawing]

第１図は本考案の実施例に係る前後輪操舵車の
後輪操舵装置の構成を示す平面図、第２図は前記
後輪操舵装置の後輪用ギヤボツクス内の詳細な構
成を示す正面視断面図、第３図は同横視断面図、
第４図は前記後輪用ギヤボツクスにおけるウオー
ムシヤフト回転角に対する各セクタシヤフト及び
デイフアレンシヤルケース出力軸の回転角の関係
の例を示す線図、第５図は前記後輪操舵装置の前
輪舵角に対する後輪舵角の関係の例を示す線図、
第６図は従来の舵角応動型後輪操舵装置における
前輪舵角と後輪舵角の関係の例を示す線図である
。１０Ａ，１０Ｂ……前輪、１２……前輪操舵部
、１４Ａ，１４Ｂ……後輪、１６……後輪操舵部
、１７……後輪操舵用ギヤボツクス、１８……第
１のセクタシヤフト、２０……第２のセクタシヤ
フト、２２……前輪舵角伝達手段、２４……第１
のサイドギヤ、２６……第２のサイドギヤ、３２
……デイフアレンシヤルケース、３４……出力軸
、３５……差動歯車機構、３８……前輪操舵用ギ
ヤボツクス、４４……連結シヤフト、４６……ウ
オームシヤフト、５６……ボールナツト、５８…
…第２セクタシヤフトギヤ部。 FIG. 1 is a plan view showing the configuration of a rear wheel steering device for a front and rear wheel steering vehicle according to an embodiment of the present invention, and FIG. 2 is a front view showing the detailed configuration of the rear wheel gearbox of the rear wheel steering device. A cross-sectional view, FIG. 3 is a horizontal cross-sectional view of the same,
FIG. 4 is a diagram showing an example of the relationship between the rotation angle of each sector shaft and differential case output shaft with respect to the rotation angle of the worm shaft in the rear wheel gearbox, and FIG. A diagram showing an example of the relationship between the rear wheel steering angle and the angle,
FIG. 6 is a diagram showing an example of the relationship between the front wheel steering angle and the rear wheel steering angle in a conventional steering angle responsive rear wheel steering device. 10A, 10B...front wheel, 12...front wheel steering unit, 14A, 14B...rear wheel, 16...rear wheel steering unit, 17...rear wheel steering gear box, 18...first sector shaft, 20... ...Second sector shaft, 22...Front wheel steering angle transmission means, 24...First
side gear, 26... second side gear, 32
... Differential case, 34 ... Output shaft, 35 ... Differential gear mechanism, 38 ... Front wheel steering gearbox, 44 ... Connection shaft, 46 ... Worm shaft, 56 ... Ball nut, 58 ...
...Second sector shaft gear section.

Claims

[Scope of Claim for Utility Model Registration] A vehicle comprising a front wheel steering means for steering the front wheels and a rear wheel steering means for steering the rear wheels, transmitting the front wheel steering angle to the rear wheel steering means, and transmitting the front wheel steering angle to the transmitted front wheel steering angle. Correspondingly, a rear wheel steering device for a front and rear wheel steered vehicle is configured to steer the rear wheels in a direction opposite to that of the front wheels, and the front wheel steering angle is controlled by a gear ratio that varies depending on the steering angle. a front wheel steering angle transmission means that transmits information using first and second gear devices, and first and second side gears are interlocked by respective output shafts of the first and second gear devices, and the difference in rotation amount of each side gear is and a differential gear mechanism that outputs from an output shaft, the rear wheel steering means is actuated by the output from the output shaft, and when the front wheel steering angle becomes a predetermined angle or more, the rear wheels are brought into reverse phase. A rear wheel steering device for a front and rear wheel steered vehicle, characterized in that the rear wheel steering device is adapted to be steered.