Rear wheel steering apparatus for vehicle.

摘要

A rear wheel steering apparatus for a vehicle, comprising a hydraulic cylinder for displacing a steering rod connected to left and right rear wheels axially, a centering spring for biasing the steering rod toward a neutral position, and a centering spring cancelling mechanism for preventing a biasing force of the centering spring from acting on the steering rod and wherein a partition wall of the hydraulic cylinder defining an oil chamber in the cylinder is formed as a cup shape having a central concave portion which constitutes a pressure chamber of the centering spring cancelling mechanism. <IMAGE>