Patent ID: 7654543

Claim:
A vehicle suspension arm supporting structure, wherein right and left side members which are disposed longitudinally at a lower part of a vehicle body and a subframe which is made of a light metal and is connected to the right and left side members in such a manner as to extend therebetween are provided, and suspension arms which support wheels are made to be supported on the subframe, wherein at one supporting portion of a plurality of supporting portions of the subframe which supports one of the suspension arms, a receiving portion is integrally formed on the subframe in such a manner as to extend transversely outwards, and a sheet steel member, which is a member that is different from the subframe, is connected to the subframe in such a manner as to be situated below the receiving portion of the subframe at a predetermined interval, the sheet steel member including three connecting portions disposed in the same plane in a triangular shape and three recessed reinforcement portions extending between the respective connecting portions, each connecting portion receiving a fastener to connect the sheet steel member to the subframe, and wherein a base portion of the suspension arm is disposed between the receiving portion of the subframe and the sheet steel member, the base portion of the suspension arm is made to be supported on the subframe via a rubber bushing joint by a connecting bolt which passes vertically through the receiving portion of the subframe and one of the connecting portions of the sheet steel member, and the receiving portion of the subframe is connected to one of the right and left side members by the connecting bolt.