| 摘要 |
PURPOSE:To provide a vibration reducing effect over a wide frequency band and also to expect a vibration reducing effect by means of fluid resonance even when a big load is applied. CONSTITUTION:A supporting elastic body 6 is interposed between an inner cylinder 3 outer peripheral surface and an external cylinder 7 inner peripheral surface, a main fluid chamber 11 is sectioned in the supporting elastic body 6, the main fluid chamber 11 and a capacity variable sub fluid chamber 12 are linked together via a first orifice 5a and fluid such as oil on the like is enclosed into the main and sub fluid chambers 11 and 12 and the first orifice 5a. A second orifice constituting body 16 fixed to the lower end part of the inner cylinder 3 and a stopper member 17 fixed to the supporting elastic body 6 inner peripheral surface abut each other when a load more than a set value is applied and the main fluid chamber 11 is divided into a first sub-room 11A sectioned mainly by the supporting elastic body 6 and a second sub-room 11B sectioned mainly by a diaphragm 10. The first and second sub-rooms 11A and 11B are linked together via a second orifice 6a. |
