| 摘要 |
PROBLEM TO BE SOLVED: To enhance the ride quality by allowing a rubber bush to fully demonstrate its function in a power unit suspension structure of a motorcycle in which a front part of a power unit is rockingly supported by a vehicle body frame via a pivot and the rubber bush, and a longitudinally extending cushion unit is provided between the vehicle body frame and the power unit. SOLUTION: A rubber bush 18 having a through hole 21 passing through a pivot is formed so that the through hole 21 is arranged at the position offset from the center C of the rubber bush 18 in a normal state, and the offset direction of the through hole 21 from the center C is arranged on the side opposite to the direction of the resultant of the upward force caused by the ground contact of a rear wheel with the ground and the backward force from a cushion unit. The rubber bush 18 is assembled to at least one between the pivot and the vehicle body frame and between the pivot and a power unit. COPYRIGHT: (C)2009,JPO&INPIT
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