PURPOSE: To limit a rear wheel steering angle at the time of high speed, to release restriction at the time of low speed, to reduce the number of part items by way of eliminating an electromagnetic solenoid and to prevent abnormal behavior by large steering angle steering at the time of high speed due to an erroneous motion by pulling and inserting a pin for rack steering angle limitation for steering force transmission.
CONSTITUTION: A pin 3 is pushed into a groove part 15 of a rack 1 through a plunger 4 by spring force of a plunger spring 5 in a pin actuation mechanism 2 in the state of high speed. Groove part width corresponding to a stroke required for steering force is provided on the groove part 15, and consequently small steering angle steering of a rear wheel is carried out. When a front wheel is steered at a large steering angle in the state of low speed, high hydraulic pressure is generated by grounding of the front wheel, accordingly, the plunger 4 pushes the plunger spring 5, and the plunger 4 is separated from the rack 1. Then, the pin 3 is removed from the groove part 15 by spring force of a spring 6, restriction of rear wheel steering is released and large steering angle steering becomes possible. Hereby, a plunger switch 8 monitors movement of the plunger 4.
OTSUKA JOJI
OHIRA MASASHI
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