Patent ID: 7458593

Claim:
A support structure of a motor-driven steering assist apparatus interposed between an upper steering shaft in a steering wheel side and a lower steering shaft in a tire wheel side, wherein a steering angle regulator for limiting a maximum steering angle of the upper steering shaft is provided between the upper steering shaft and the vehicle body side, the steering angle regulator is constituted by a stopper portion provided in the vehicle body side and a stopped portion provided in the upper steering shaft, and the stopped portion of the upper steering shaft is braked by the stopper portion in the vehicle body side at a time when the upper steering shaft reaches the maximum steering angle, the motor-driven steering assist apparatus rotatably supports the upper steering shaft to an upper vehicle body side via a bearing by a support member, the support member is formed in an annular shape having an opening portion obtained by partly notching an annular wall in a peripheral direction, and both right and left side portions in the opening portion of the annular wall in the annular support member are formed as the right and left stopper portions, and a protruding portion provided in a pinched between the right and left stopper portions of the opening portion in an outer periphery of the upper steering shaft is formed as the stopped portion.