| 摘要 |
PROBLEM TO BE SOLVED: To prevent noise of high frequency components from being produced in idling vibration control. SOLUTION: An insulator 2 and a vibration control mechanism part 1 which is formed in series with the insulator 2 are provided between an upper connecting member 6 to be connected to a vibration body and a lower connecting member 9 to be connected to a car body side. The vibration control mechanism part 1 is formed by an excitation mechanism part constituted of a main camber 12 in which fluid is filled, an auxiliary chamber 16 to be connected to the main chamber 12 via a first orifice 15, an air chamber 18 provided on the lower part of the auxiliary chamber 16, a third liquid chamber 123 to be connected to the main chamber 12 via a second orifice 125 and a balancing chamber 13 which is partitioned and formed via a second diaphragm 11 for the third liquid camber 123 and a hydraulic pressure absorbing mechanism part which is provided separately from these chambers and is constituted of a third orifice 75, a third diaphragm 73, a fourth liquid chamber 74, etc. The balancing chamber 13 is provided with a switch means 3 introducing negative pressure or atmospheric pressure and a control means 5 operating the switch means 3. |
