Vehicular l-type suspension arm

A vehicular L-type suspension arm in which a wheel support part (AW) that is capable of supporting a wheel is provided on one end part of an arm main body (A) that is L-shaped in plan view, a first vehicle body side linking portion (AF1) that is capable of being swingably linked to a vehicle body (F) via a first bush (B1) arranged with an axis thereof lying in a fore-and-aft direction of the vehicle body is provided in an intermediate part of the arm main body (A), and a second vehicle body side linking portion (AF2) that is capable of being swingably linked to the vehicle body (F) via a second bush (B2) arranged with an axis thereof lying in an up-and-down direction is provided on the other end part of the arm main body (A),

• characterized in that the arm main body (A) comprises an upper half body (AU) formed with an inverted U-shaped cross-section while having an upper wall part (1) and a pair of side wall parts (2) extending downward from opposite sides of the upper wall part (1), and a lower half body (AL) that is formed by press forming a plate material in a shape so as to block a lower open end of the upper half body (AU) and is welded by welds (w1) to inner faces of the pair of side wall parts (2) of the upper half body (AU), at the other end part of the arm main body (A) the lower half body (AL) extends lengthwise further outward than the upper half body (AU), an upwardly facing cylindrical bush support part (P2) is formed by burring integrally with the extended part (ALe) so that the extended part (ALe) is the second vehicle body side connecting portion (AF2), the bush support part (P2) being capable of fitting onto and supporting an outer tubular part of the second bush (B2), and an outer peripheral face, close to the intermediate part of the arm main body (A), of the bush support part (P2) is butt-welded by a weld (w9) to an outer end face of the upper half body (AU).