| 摘要 |
<p>PURPOSE:To eliminate a working space for a motor and to reduce the size of a whole device, by a method wherein, in a rear wheel steering ratio varying mechanism, an electric motor to swing and displace a lever on the rear wheel side according to a running condition is secured on the same axis as the rotary axis of a rotary body and on the car body side. CONSTITUTION:A rear wheel steering ratio varying mechanism 1 located in a transmission rod system 5 to transmit the steering motion of a front wheel 10 to the rear wheel 14 side is provided with a rotary body 3 supported to a bracket 2 in a manner to be rotatable on a vertical axis Z. An arm 4 a tip 4a of which is pivotally mounted to a rod 5a on the front wheel side is extended sideways (in a direction Y) from the body 3, a lever 7 is rotatably supported on an axis X crossing the axis Z at right angles, and and its tip 7a is pivotally mounted to a rod 5b on the rear wheel side. An electric motor 6 is situated in order to rotate the lever 7 on the axis X, but in this case, the motor 6 is placed on the same axis as an axis Z, and its output shaft is coupled to a rotation transmission system, running to the lever 7 side, through an electromagnetic clutch.</p> |
