Patent ID: 7866436
Filing Date: 2011-01-11
Classification: B62D

Abstract:
1. A steering apparatus for a motor vehicle, comprising: an input shaft interconnected to a steering member; an output shaft interconnected to steerable wheels; a differential mechanism for setting a transmission ratio from the input shaft to the output shaft by coaxially interconnecting the input shaft and the output shaft, the differential mechanism including a planet transmission mechanism, that has: a torque controlling motor interconnected to the input shaft; and a transmission-ratio varying motor, interconnected to the differential mechanism, for driving the differential mechanism, and rotating and driving the carrier member; wherein at least one portion of the torque controlling motor and/or at least one portion of the transmission-ratio varying motor overlap one portion of the differential mechanism with respect to a direction along an axis of the input shaft, the torque controlling motor is arranged coaxially with the input shaft, the transmission-ratio varying motor is arranged coaxially with the differential mechanism; and an annular groove is defined on an inside of an outer cylinder portion of a rotor of the torque controlling motor, and a first end wall axially supporting one end of the planet element and one portion of the planet element are accommodated in the annular groove.