Patent ID: 8863874

Claim:
A mounting structure for an in-wheel motor system for installation of the in-wheel motor system in a vehicle, comprising: the in-wheel motor system installed in a wheel of the vehicle to generate rotational force to drive the wheel; and a torsion beam axle (TBA) assembly to fix the in-wheel motor system to a vehicle body, wherein: a rear portion of a motor housing forming an outer appearance of the in-wheel motor system includes a step portion formed in a stepped manner to have a decreased diameter, and a ring-shaped fastening face vertically arranged from the step portion; and the TBA assembly includes: a trailing arm provided with a through hole penetrated to surround the step portion of the motor housing; a mount integrated with the trailing arm to fix the trailing arm to a vehicle body; and a plurality of fastening bolts to fix the motor housing to the trailing arm, wherein, when the step portion is fitted and coupled into the through hole, the fastening face closely contacts the trailing arm, and wherein the rear portion faces away from the wheel and includes an installation portion at which a disc brake is installed.