Patent ID: 8511420

Claim:
A vehicle steering control device comprising: an electric power steering unit which generates steering assisting power for driving steerable wheels to steer; a steering ratio varying unit which drives an output member relative to an input member, which is driven by a steering operation of a driver, to vary a steering ratio that is a ratio of a steering angle variation value of the steerable wheels with respect to a steering operation quantity of the driver; and a control unit which controls said steering ratio varying unit, wherein said steering ratio varying unit is disposed on a side of said input member with respect to said power steering unit as viewed with respect to a transmitting path of the steering operation of the driver, wherein said control unit decreases in magnitude a relative drive velocity of said output member driven by said steering ratio varying unit relative to said input member when a magnitude of a difference between a maximum value of a steering drive velocity range of said steerable wheels which allows said power steering unit to generate a required steering assisting power and an actual steering drive velocity of said steerable wheels is small as compared to where the magnitude of said steering drive velocity difference is large.