| 摘要 |
<p>PURPOSE:To make a steering angle given to rear wheels released securely when a trouble is generated without, using a centering spring. CONSTITUTION:A steering angle is given to rear wheels by displacing an output shaft 2 for rear wheels in the axial direction. Between the output shaft 2 for rear wheels and a fixing part such as a car body 27, the first and the second one-way clutch mechanisms 21a and 21b are provided. The first one-way clutch mechanism 21a checks a displacement of the output shaft 2 for rear wheels to one direction by exceeding a neutral position. And the second one-way clutch mechanism 21b checks a displacement of the output shaft 2 for rear wheels to the other direction by exceeding the neutral position. When a steering angle is given to the rear wheels by an actuator, the functions of the first and the second one-way clutch mechanisms 21a and 21b are stopped by solenoids 26a and 26b.</p> |
