| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide swing arm part structure capable of reducing weight by lowering required rigidity of a cross member. <P>SOLUTION: In the swing arm part structure, a swing arm 71 is provided with the cross member 74 between a pair of right and left arm bodies 73, a rear wheel 3 is suspended at the tip end side of the swing arm 71, and a rear drive shaft 12 for driving a rear wheel connected with a rear final reduction gear unit 14 is disposed on the upper part of the cross member 74. The cross member 74 is housed in an outline of each arm body 73 in side view and a bottom part is made to be a wider trapezoidal shape in cross section than the upper part. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
