| 摘要 |
PURPOSE: A dynamic damper by using a spare tire in a vehicle is provided to reduce vibration efficiently by deforming a bush member according to load with maximizing the elastic force, and to improve driving experience by damping efficiently at high or low frequency band. CONSTITUTION: A dynamic damper is composed of an inner pipe member(31) thread-connected to a trunk room panel(1a); a round bush member(32) surrounding the inner pipe member; an outer pipe member(33) inserted to a disk(11) around the bush member to install a spare tire(10); and a fixing cap member(34) combined with the outer pipe member to fix the spare tire in the outer pipe member by pressing the disk. Elasticity is maximized with deforming the bush member according to load, and vibration is reduced efficiently. Driving experience is improved with damping efficiently at high or low frequency band.
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