| 摘要 |
PURPOSE:To satisfactorily damp input vibration in a frequency range established as to a contraction passage by forming a fixed gap in which a rubber elastic membrane of a partitioning member can be freely deformable between a balancing chamber regulating member and the partitioning member. CONSTITUTION:A rubber elastic body 14 is provided between an inner cylinder member 10 and an outer cylinder member 12, and fluid charged in the first and the second pressure receiving chamber 30, 32 and a balancing chamber 34 is led together via the first and the second contraction passage 46, 48 for absorbing input vibration. Hereupon, as a fixed gap 76 is formed between a balancing chamber regulating member 74 and a partitioning member 26 made up of a rubber elastic membrane, the rubber elastic membrane 26 becomes able to deform without being restricted by the balancing chamber regulating member 74, and in accordance to that deformation, incompressible fluid flows through the contraction passage 46, 48. In this way, input vibration in a frequency range established as to the contraction passages can be satisfactorily damped. |
