| 摘要 |
PROBLEM TO BE SOLVED: To provide a swing arm for a small vehicle which includes a right and left pair of square tube arms, a cross member which is welded into a front part of the both arms, and a right and left pair of bearing arms which extends ahead integrally continuing both right and left tips of the cross member, and in which pivotally supporting parts for pivotally supporting vehicle axle of rear wheels are provided at rear tips of the arms and attaching holes are formed while minimizing the deterioration of rigidity. SOLUTION: The attaching holes 56, 57, 58 and 59 are positioned in a region where welding parts 60L, 60R of the cross member 44 and both the arms 43L, 43R fill up in a front-rear direction. Furthermore, the attaching holes are formed at at least either of upper walls 50L, 50R of both the arms 43L, 43R and thereby a functional component or a design component can be obtained. In addition, both the arms 43L, 43R are positioned more rear than the welding parts 60L, 60R of both the arms 43L, 43R and the cross member 44, and formed so that a thickness thereof becomes gradually smaller as progressing more rearward. COPYRIGHT: (C)2013,JPO&INPIT |
