| 摘要 |
PROBLEM TO BE SOLVED: To make the further wider ranges of a frequency band low pinetir spring in a liquid sealed vibration isolator. SOLUTION: A liquid chamber, comprised of an elastic body 3 set between a first bracket 1 and a second bracket 2, is divided in to a main liquid chamber 5 and a subsidiary one 7. Also, the chamber has a first orifice 8 set to connect the main chamber 5 to the subsidiary one 7 continuously, and a secondary orifice 9 set to connect by opening a valve 10 only at an idling. Furthermore, a third orifice 11, which comprises a valve 13 for opening and closing the nozzle end in the main chamber 5 side and an elastic diaphragm 12 for covering the other end of the nozzle in the subsidiary chamber 7 side, is set. The third orifice 11 can generate liquid column resonance with the vibration of the elastic diaphragm 12 by opening the valve 3 only at a starting time. |
