| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid sealed cylindrical vibration isolating device wherein a vibration reduction characteristic in a low frequency region can be adjusted at any time. SOLUTION: A main/sub fluid chamber 41, 48 is formed, which is arranged coaxially in the outside of a rubber elastic unit 3 to liquid-tightly seal recessed parts 33, 34 and an orifice groove 35 to mutually communicate through an orifice passage 46 between the chamber and the rubber elastic unit 3, in a part sealing the orifice groove 35, a cylindrical outer side member 4 having a seal rubber layer 41 is provided. The outer side member 4 has a movable member 44 into contact with a peripheral surface of the part sealing the orifice groove 35 of the seal rubber layer 41 to be provided capable of advancing/ retracting in an axial line direction and a feed screw fixture 45 changing a sectional area of the orifice passage 46. |
