Vehicle steering system with independent steering for each wheel

Details Vehicle steering system with independent steering for each wheel Vehicle steering system with independent steering for each wheel

1989-06-21

1992-10-13

Hill, Mitchell J.

Land vehicles

Wheeled

Running gear

180234, 180236, 280 961, 280 99, 280100, B60K 17358, B62D 302, B62D 714

Patent

active

051544377

ABSTRACT:
In a steering mechanism wherein the turning angle of a steering wheel is transmitted to a wheel via a link mechanism employing a tire rod (3) and a knuckle arm (4), the link mechanism and the wheel (1) are coupled by a multiplying gear (2). Individual drive mechanisms are mounted independently on each wheel, and each wheel is driven independently to enable front-wheel independent drive, rear-wheel independent drive and four-wheel independent drive. Drive of an inner rear wheel is changed over at a steering angle in the vicinity of 90.degree. to effect control of steering. A steering angle multiplied twofold or more can be obtained in simple fashion via the multiplying gear (2) even for a steering angle of about 45.degree. using the conventional link mechanism. In the drive of each wheel, drive of the inner rear wheel is halted in the vicinity of the 90.degree. steering angle, so that locking of the inner front wheel can be avoided. Further, only the inner rear wheel is driven in the reverse direction when a large steering angle is obtained. This makes smooth vehicle travel possible even at large steering angles.

REFERENCES:
patent: 621158 (1899-03-01), Sedgwick
patent: 1170270 (1916-02-01), Johnston
patent: 1255775 (1918-02-01), Mueller
patent: 3087564 (1963-04-01), Quayle
patent: 3972379 (1976-08-01), Norris
patent: 4446941 (1984-05-01), Laurich-Trost
patent: 4778024 (1988-10-01), Matsumoto et al.
patent: 4823899 (1989-04-01), Ron
patent: 4836319 (1989-06-01), Haseda et al.

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