| 摘要 |
PROBLEM TO BE SOLVED: To provide a system of simple structure for changing resonance frequency to follow up input vibration. SOLUTION: In this self-follow-up type resonance device, one end of a lever 2 is pivotally supported by a support point 5, and a free end 7 at the other end is born by a damping spring 6. The lever 2 forms an inclination angleθto lift the free end 7. A mass 3 is provided to be movable on it, so that a dynamic damper 1 is composed of the mass 3 and the damping spring 6. In the self-follow-up type resonance device, as vibration is inputted to the free end 7, the mass 3 moves to a balance point between centrifugal force F and gravitational force G downward. The resonance frequency of the dynamic damper 1 thus automatically follows up input vibration to change itself to correspond to the input vibration. COPYRIGHT: (C)2004,JPO&NCIPI
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