| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve durability of an elastic body while holding the resonance frequency of a dynamic damper. <P>SOLUTION: A dynamic damper 1 is mounted on a vehicle seat and includes: an outer metal fitting 2 having two sidewall portions 21, 22 opposing to each other; a weight 3 disposed between both the sidewall portions 21, 22; and a rubber elastic body 4. The rubber elastic body 4 includes a connecting portion 40 including: first connecting portions 41, 41 which are disposed between both the sidewall portions 21, 22 and on both sides of the weight 3 in the longitudinal direction of both the sidewalls 21, 22 so as to be extended along the opposing direction of both the opposing walls 21, 22 and which connect both the sidewall portions 21, 22 to each other; and second connecting portions 42, 42, 42, 42 which are disposed between the first connecting portions 41, 41 and opposing faces 30, 30 of the weight 3 opposite to each other in the longitudinal direction of both the sidewall portions 21, 22 so as to be extended in the longitudinal direction of both the side wall portions 21, 22, and which connect the first connecting portions 41, 41 and the opposing faces 30, 30 of the weight 3 to one another. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
