| 摘要 |
PROBLEM TO BE SOLVED: To provide a swing arm of a motorcycle which is excellent at weldability and in which rigidity strength etc. can be improved.SOLUTION: Left and right pipe members 14 include bent parts 14a which bend to the vehicle body inside direction at the middle of the longitudinal direction, and include upper and lower surfaces and a flat plane part in the inside surface. A joint member 15 is provided so as to be superimposed on the bent part 14a of at least one side pipe member 14 of the left and the right, one side surface of the upper and the lower surfaces of the joint member 15 which is superimposed on the bent part 14a is jointed to one side corner of the upper and the lower of the pipe members 14 so as to align with one side surface of the upper and the lower of the pipe members 14 in the vertical direction, and the other side surface of the upper and the lower of the joint member 15 is jointed so as to be superimposed on the other side surface of the upper and the lower of the pipe member 14 in the vertical direction. |
