LINK-TYPE REAR WHEEL FORCIBLE STEERING SYSTEM FOR PREVENTING UNDER STEER GENERATED IN TURNING A REAR-WHEEL DRIVE VEHICLE AND IMPROVING TRAVELING STABILITY BY MINIMIZING A RADIUS OF ROTATION

摘要

PURPOSE: A link-type rear wheel forcible steering system is provided to restrict under steer generated in cornering and to secure maximally traveling stability in traveling a curved rotational road. CONSTITUTION: A link-type rear wheel forcible steering system is composed of a steering wheel(101) for steering front wheels to convert the change of the vehicle; a steering gear unit(102) installed at the lower side of the steering wheel; a steering link connected and mounted to the steering gear unit and coupled with a tie rod arm to steer a tie rod and a front wheel shaft; a Pitman arm(10) arranged at the steering gear unit and operated by rotation of the steering wheel; an idle arm(20) coupled with the Pitman arm through a first link(50), connected to a front wheel tie rod arm(112) by a second link(60), and fixed rotatively to a vehicle body; a connection arm(30) of which one end(31) is connected to the idle arm through a third link(70), a center portion is rotatively to the vehicle body, and other end(32) is connected to a rear wheel tie rod arm(122) by a fourth link(80); an actuator(40) having a piston rod connected to the other end of the connection arm; and first and second lines(41,42) for linking the actuator and the steering gear unit.