| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dynamic damper which assures a degree of freedom of design by making a volume increase of a mass member possible in response to a peak frequency of vibration of a steering wheel while preventing the occurrence of abnormal noise during running on a rough road. <P>SOLUTION: Since an opposing surface 21a arranged to face the inside surface of a lower cover 71 is so formed in a curved shape as to protrude to the inside face side of the lower cover in the body 21 of the mass member 20, the volume of the mass member 20 can be increased to the inside surface side of the lower cover 71 as compared with a case where the opposing surface 21a is formed in a flat shape. On the other hand, even if the opposing surface 21a of the body 21 collides with the inside surface of the lower cover 71, the first buffer sections 41 absorb an impact force on the collision of the surfaces and prevent the occurrence of an impact noise (abnormal noise), since first buffer sections 41 of buffer members 40 are vulcanized and bonded to both ends of the opposing surface 21a of the body 21. <P>COPYRIGHT: (C)2012,JPO&INPIT |
