| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid sealing type vibration control device effectively absorbing vibrations of not only a low frequency area but also a middle frequency area, saving cost, and having high reliability. SOLUTION: In the liquid sealing type vibration control device 1 wherein a first metallic member 2 and a second metallic member 4 are connected through an elastic member 7, a liquid chamber is constituted by a pressure receiving chamber 8, a first equilibrium chamber 9, and at least one second equilibrium chamber 10. The pressure receiving chamber 8 and the first equilibrium chamber 9 are separated from each other by a partitioning member 11, and communicated by a first orifice 12 which is a damping flow passage detouring the partitioning member 11. The pressure receiving chamber 8 and the second equilibrium chamber 10 are communicated by a second orifice 14, and the second equilibrium chamber 10 and the second orifice 14 are integrally molded by the elastic member 7. The maximum cross-sectional area (S<SB>1</SB>) in the second equilibrium chamber 10 is larger than the minimum cross-sectional area (S<SB>0</SB>) of the second orifice 14. A thin-wall portion 15 is provided on a part of a wall of the second equilibrium chamber 10, and the volume of the second equilibrium chamber 10 can be increased. COPYRIGHT: (C)2010,JPO&INPIT |
