| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid-sealed vibration control device displaying excellent vibration control effect to input vibration in a plurality of frequency areas or a wide frequency area by suppressing a notable high dynamic spring state due to the anti-resonant action of a fluid caused by an orifice passage. SOLUTION: A pressure receiving chamber 44, a first balancing chamber 46 and a second balancing chamber 48 are series-connected and communicated with each other through a first orifice passage 62 and a second orifice passage 64. The value of the ratio A/L of cross-sectional area A to length L of the second orifice passage 64 communicating the first balancing chamber 46 and the second balancing chamber 48 is set smaller than that of the first orifice passage 62 communicating the pressure receiving chamber and the first balancing chamber 46, and the resonance frequency of fluid flow through the second orifice passage 64 is tuned on the higher frequency side than the resonance frequency of fluid flow through the first orifice passage 62. |
