| 摘要 |
PURPOSE:To reduce noises caused by engine idling vibration, etc., by providing a means for forcing a fluid to resonate in a low-frequency region, on a portion communicating between hydraulic chambers in a mount. CONSTITUTION:A partition plate 11 divides the interior of a mount to a main hydraulic chamber S1 formed on the upper part thereof and a sub-hydraulic chamber S2 formed likewise on the lower part thereof. A large-diameter cylinder 15 is provided while standing on the center of the partition plate 11. The cylinder 15 is adapted to have a large internal volume, i.e., it is large in its inner diameter and long in its length. A fluid mass system corresponding to said inner volume resonates, whereby hydraulic pressure having a phase opposite to vibration transmission is generated. The opposite phase hydraulic pressure cancels the vibration transmission. |
