| 摘要 |
PROBLEM TO BE SOLVED: To provide a dynamic damper having high spring characteristics perpendicular to the axis regardless of the diameter size of a hollow propeller shaft, providing resonance characteristics from a low-frequency region to a high-frequency region, reducing costs by reducing metal portions, and by non-adhesive bonding and easily fitted, and a hollow propeller shaft with the damper. SOLUTION: The dynamic damper and the hollow propeller shaft with it comprises an easily fitted member fixed inside a hollow shaft which is situated in both sides of damper mass which is freely fitted and an integrally connected member which connects the damper mass and easily fitted member and the integrally connected member connects elastically the damper mass in the easily fitted member and in the same axis and at the same time, the integrally connected member comprises a slope way portion slanted on the same axis and connecting portions fastening each other. By this way, roles of the easily fitted member and the integrally connected member are divided and can be non-bonding and, when the mass and rigidity of the integrally connecting member are adjusted, high shaft perpendicular spring characteristics are maintained and resonance characteristics can be obtained by wide range of frequency and products easily made at economical cost are obtained. COPYRIGHT: (C)2008,JPO&INPIT
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