| 摘要 |
PURPOSE: A dynamic damper is provided to adjust a resonant frequency as the status of a device by changing a spring constant of an elastic member as needed. CONSTITUTION: A dynamic damper comprises a base plate(51), a weight member(53), a case(56) and a frequency-adjusting member. The base plate is fixed in a device(50). The weight member is installed by including an elastic member in the base plate. The weight member absorbs the vibration of a specific frequency from the device. The case is fixed in the device with the base plate. The case protects the weight member and the elastic member by shielding. The frequency-adjusting member changes a spring constant of the elastic member by installing in the case and adding or removing pressure to the elastic member. Thereby, the frequencies are confirmed without exchanging components.
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