Patent ID: 7247111
Filing Date: 2007-07-24
Classification: B62D,F16H

Abstract:
1. A vehicle steering apparatus, comprising: a first shaft connected to an operating member; a second shaft connected to vehicle wheels such that the steering angle changes according to the rotation thereof; a rotation transmission mechanism for connecting said first shaft with said second shaft via a plurality of rotation transmission elements so as to enable the rotation to be transmitted and enable the rotation transmission ratio between said first shaft and said second shaft to be changed; an actuator for rotatably driving one of said rotation transmission elements; a rotation speed determination part for determining the rotation speed of said first shaft; and a control device having a steady control mode in which said actuator is controlled so that the rotation speed of one of said rotation transmission elements becomes equal to the determined rotation speed of said first shaft; wherein said rotation transmission ratio becomes 1 when the rotation speed of one of said rotation transmission elements becomes equal to the rotation speed of said first shaft.