JPH01109481U

JPH01109481U -

Info

Publication number: JPH01109481U
Application number: JP494988U
Authority: JP
Priority date: 1988-01-19
Filing date: 1988-01-19
Publication date: 1989-07-24

Description

[Brief explanation of the drawing]

第１図〜第３図は本考案による四輪操舵装置の
一実施例を示し、第１図は全体の説明図、第２図
は第１図の―断面図による無段変速機の作動
の説明図、第３図は全体の作動の説明図、第４図
及び第５図は変形実施例を示し、第４図は変形部
分の構造の説明図、第５図は全体の作動の説明図
である。符号の説明、２０……動力舵取装置（後輪動力
舵取装置）、２１……パワーシリンダ、２４……
作動ロツド、２６……サーボ弁、３０……連動装
置、３５，１３５……無段変速機、５１……供給
ポンプ（後輪側供給ポンプ）。 1 to 3 show an embodiment of the four-wheel steering system according to the present invention, FIG. 1 is an overall explanatory diagram, and FIG. 2 is a sectional view of the continuously variable transmission shown in FIG. 1. FIG. 3 is an explanatory diagram of the overall operation, FIGS. 4 and 5 show modified embodiments, FIG. 4 is an explanatory diagram of the structure of the deformed part, and FIG. 5 is an explanatory diagram of the entire operation. It is. Explanation of symbols, 20... Power steering device (rear wheel power steering device), 21... Power cylinder, 24...
Actuation rod, 26... Servo valve, 30... Interlocking device, 35, 135... Continuously variable transmission, 51... Supply pump (rear wheel side supply pump).

Claims

[Scope of utility model registration request]

A front wheel steering device that steers the front wheels, a rear wheel steering device that steers the rear wheels, and both of the steering devices are mechanically interlocked with each other so that the steering angle of the rear wheels changes in accordance with the steering angle of the front wheels. In the four-wheel steering device, the rear wheel steering device includes a power cylinder that steers the rear wheels via an actuating rod, and a power cylinder that supplies working fluid from a supply pump to both of the power cylinders. It consists of a power steering device equipped with a servo valve that controls supply and discharge to and from an operating chamber, and the interlocking device is equipped with a continuously variable transmission whose gear ratio changes depending on driving conditions such as vehicle speed. A four-wheel steering device characterized in that the four-wheel steering device is configured to transmit a steering angle of the front wheels to an input member of the servo valve.