| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a dynamic damper for effectively reducing the vibration of a vibrator different in frequency or direction. <P>SOLUTION: A main mass 33 is supported via a first elastic body 32 on a mounting member 31, and a sub mass 35 is supported via a second elastic body 34 on the main mass 33. The damping direction or the damping frequency of the vibration given by the main mass 33 and the sub mass 35 is differentiated to effectively reduce the various vibration of the vibrator 16 different in direction or frequency. Furthermore, the assembling of the main mass 33 and that of the sub mass 35 can be completed at the same time simply by mounting the mounting member 31 to the vibrator 16. therefore reducing assembling man-hours for the dynamic damper. The direction of the second elastic body 34 supporting the sub mass 35 on the main mass 33 is changed or the sub mass 35 is divided in number to differentiate one resonance frequency from the other, thereby reducing the vibration in a wider range. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
