Patent ID: 7540511

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 the motor-driven steering assist apparatus is provided with an input shaft and an output shaft, a torsion bar is provided between the input shaft and the output shaft, a torque sensor is provided which detects steering torque on a basis of displacement in a rotating direction of the input shaft and the output shaft, an upper steering shaft is provided with the input shaft via a connecting device, and a lower steering shaft is provided with the output shaft via an another connecting device, a steering angle regulating structure for limiting a maximum steering angle of the upper steering shaft is provided between the upper steering shaft and the vehicle body side, and a steering angle regulating structure for limiting a maximum steering angle of the lower steering shaft is provided between the lower steering shaft and the vehicle body side.