| 摘要 |
<P>PROBLEM TO BE SOLVED: To ensure superior dynamic vibration-adsorption characteristics without sacrificing a fixing force, and to improve assembling performance, in a dynamic damper 1 for a hollow rotating shaft. <P>SOLUTION: The dynamic damper 1 for the hollow rotating shaft includes: a cylindrical body 11 fixed to the internal periphery of the hollow rotating shaft 2 which is a subject to be reduced in vibration; a pair of end boards 12, 12 fixed to the internal periphery of the cylindrical body 11 while being separated from each other in the axial direction; a mass body 13 which is positioned between the end boards 12, 12, and loosely inserted into the internal periphery of the cylindrical body 11; and elastic bodies 14, 14 composed of rubber-like elastic materials which axially connect each end board 12 and the mass body 13 to each other. Accordingly, the elastic bodies 14, 14 serve as shear springs so as to withstand vibration in the axial right-angle direction. Further, the elastic bodies 14, 14 do not support the mass body 13 by being pressure-inserted into the internal periphery of the cylindrical body, but are fixed to the cylindrical body 11 via the end boards 12, 12. Thereby, the superior dynamic vibration-absorption characteristics can be ensured in a wide vibration frequency band. <P>COPYRIGHT: (C)2012,JPO&INPIT |
