| 摘要 |
PURPOSE:To lessen the vibration of a sub-frame by differentiating the natural frequencies between a pair of right and left longitudinal member parts of a sub-frame to which the inner ends of plural lateral links supporting a wheel support are connected. CONSTITUTION:The captioned rear suspension whose base end is rotatably installed on a body side 16, consists of a swing arm 18 on which a wheel support 12 on the end of which a rear wheel 10 is rotatably supported, is mounted, three lateral links 20, 22, 24 whose outer ends are connected to the wheel support 12 while whose inner ends are connected to the body side 16, and which are extending in the lateral direction of body, and a sub-frame 28. The sub- frame 28 consists of a pair of right and left longitudinal member parts 30, and two lateral members 36, 38. And, the right and left longitudinal member parts 30 are formed in such a way that their natural frequencies are differentiated from each other and, thereby, the vibration of the sub-frame 28 can be lessened, reducing a humming sound. |
