| 摘要 |
PURPOSE:To prevent vibration transmission well in a wide frequency range by preventing any increase in a movable spring constant in a high frequency vibration range. CONSTITUTION:A liquid sealing vibration isolator is provided with a main liquid chamber A whose chamber wall is made of a rubber vibration insulator 1, and an auxiliary liquid chamber B communicated with the main liquid chamber A through a throttled flow passage 31, and for maintaining sealed liquid for making communication through the throttled flow passage 31 with a rubber film 2 serving as a chamber wall. A part of the chamber wall of the main liquid chamber A is made of a rubber film 4, a butterfly valve 5 is arranged in its inner position, and the rubber film 4 is isolated from the main liquid chamber A by means of closing motion of the butterfly valve 5. The butterfly valve 5 is opening/closing operated by a motor 6. |
