| 摘要 |
PURPOSE: A dynamic damper is provided to prevent separation of weighted material form a fixed case while a dynamic damper is bad, to increase weight of the weighted material, and to establish decrease vibration frequency. CONSTITUTION: A weighted material(1) protrudes combining bars(3) on both sides with a specific length. Plural fixed cases(3) are fixed on a frame with a specific interval by a fixing leg(4) protruded downward and formed as cylinder or square shape to receive the weighted material and the combining bars. A combining rubber(6) connecting the combining bars to a sidewall of the fixed case to vibrate the combining bars inserted to the fixed bar up and down on inside of the fixed case. Vibration width limit rubbers(7,8) are separately mounted on an upper side and a lower side of the fixed case to limit vibration distance of the combining bar. Thereby, a dynamic damper prevents the weighted material from separating on the fixed case not to exert a bad influence to other components in an engine room. The weight of the weight material is easily increased, and decrease vibration frequency is established.
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