Patent ID: 7422080

Claim:
An in-wheel motor system having a hollow direct drive motor which is provided in a wheel and whose stator side is supported to a part around the wheel of a vehicle by elastic bodies and/or an attenuation mechanism, wherein a motor rotor and a wheel or a hub are interconnected by a coupling mechanism which comprises a motor-side plate connected to a rotating side case of the motor, a wheel-side plate connected to the wheel or hub, an intermediate plate interposed between the two plates, and first and second connection members for interconnecting the motor-side plate and the intermediate plate and interconnecting the intermediate plate and the wheel-side plate in such a manner that the interconnected plates can move relative to each other in a direction where the stiffness of the connection members themselves is low, the first and second connection members being arranged such that the directions where they have low stiffness become orthogonal to each other.