Patent ID: 7410028

Claim:
A steering control apparatus in which steering of a steering wheel is electrically controlled by using an electric motor comprising: a steering shaft coupled to the steering wheel; a turning mechanism turning a turning wheel by a turning angle corresponding to a steering angle of the steering wheel; a hypercycloidal mechanism including an external tooth gear revolving in a housing according to rotation of the steering wheel, an Oldham coupling mechanism to extract a self-rotating movement of the external tooth gear as a self-rotating movement of a rotation disk; and a rotation regulating mechanism regulating the rotating movement of the rotation disk by engagement between a groove formed in the rotation disk and a projection projecting from the housing; wherein the steering shaft and the turning mechanism are separated mechanically by Steer By Wire control; and an interlocking of the steering shaft and the turning mechanism are electrically performed by the Steer By Wire control wherein an operation direction and a steering angle of the steering wheel are detected and the turning wheel is rotated at a turning angle corresponding to a steering angle in the operation direction.