| 摘要 |
PURPOSE:To effectively reduce a spring constant in a high frequency area by floating a sheet-like elastic body in a pressure receiving chamber between a partition plate and an inner cylinder. CONSTITUTION:Liquid chambers 4a, 4b are partitioned into a plurality of chambers by means of partition body 6 on whose center an elastic body 8 is set, for instance, a pressure receiving chamber 4a in which pressure is fluctuated at the time of input of oscillations, and a balance chamber 4b in which at least one part is partitioned by a diaphragm 3 for avoiding input of oscillations. The chambers 4a and 4b are communicated with each other by means of an orifice 7 provided on the partition body 6. A sheet-like elastic body 9 is floated in the pressure receiving chamber 4a with a specified gap in respect to a chamber wall. Two small liquid chambers are formed on upper and lower portions of the sheet-like elastic body 9. The sheet-like elastic body effectively reduces spring constant in a high-frequency area (not less than 100Hz), and shows elasticity, so that its deformation can be utilized at the time of assembling. |
