| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique which reduces torsional rigidity of a suspension arm while inhibiting deterioration of flexural rigidity of the suspension arm.SOLUTION: A suspension arm 1 according to one embodiment of the invention includes: a tubular arm body 10 extending from the vehicle body side to the wheel side; a first connection part 20 which is joined to a vehicle body side end part 14 of the arm body 10; and a second connection part 30 which is joined to a wheel side end part 16 of the arm body 10. The arm body 10 has a shape such that diameters Rb, Rc of the vehicle body side end part 14 and the wheel side end part 16 are larger than a diameter Ra of a center part 12 and the diameter Rb of the vehicle body side end part 14 is larger than the diameter Rc of the wheel side end part 16. |
