Patent ID: 8528436
Filing Date: 2013-09-10
Classification: B62D,Y10T

Abstract:
1. A motor-driven steering assist apparatus interposed between a steering wheel and a wheel side steering member for assisting steering force which a driver applies to the steering wheel on the basis of a generating torque of an electric motor, the motor-drive steering assist apparatus comprising: a single unit body covered by a housing has an input shaft to which the steering wheel is connected, an output shaft to which the wheel side steering member is connected, a torque sensor provided between the input shaft and the output shaft, the electric motor driven in correspondence to a detected torque of the torque sensor, and a gear train which transmits a rotation of the electric motor to the output shaft built-in, an annular attaching portion surrounding the output shaft provided in a protruding manner in an attaching seat formed in the lower surface of the housing as seen from an axial direction of the output shaft, wherein the annular attaching portion of the housing is inserted in an attaching hole provided in a vehicle body side attaching stay, the attaching seat of the housing is seated on a peripheral portion of the attaching hole of the vehicle body side attaching stay, and the vehicle body side attaching stay is pinched between a nut screwed from a leading end side of the annular attaching portion of the housing and the attaching seat.