Patent ID: 7980576

Claim:
A vehicular suspension arm comprising: an arm main body; and a bush press-fit portion that is provided at one end of the arm main body and into which a bush is press-fitted, wherein the arm main body comprises: at least a main plate press-formed as a main part of the arm main body and having a substantially U-shaped cross-section with a substantially flat upper wall part, front and rear side walls extending downward toward a lower end opening from respective front and rear ends of the upper wall part, and a short cylindrical part provided integrally with one end by flanging, a lower plate welded between inner faces of respective lower end parts of the front and rear side walls to substantially close the lower end opening of the main plate; and a reinforcing plate superimposed on the main plate and reinforcing the main plate; wherein the reinforcing plate has an eye-shaped head part formed in an annular shape and arranged coaxially with the short cylindrical part, and a tail part extending integrally from the eye-shaped head part along the longitudinal direction of the main plate, is formed from a plate material that is thicker than the main plate, and has at least the tail part welded to an upper surface of the upper wall part of the main plate; and wherein the bush press-fit portion is formed from an inner peripheral face of the eye-shaped head part and an inner peripheral face of the short cylindrical part.