To provide a liquid-sealed vibration damping device which can switch characteristics of a first orifice and a second orifice while suppressing cavitation caused by sudden pressure difference when an excessively large vibration is input.
A liquid sealing chamber 22 between a vibration isolating base 16 and a diaphragm 24 is divided by a partition body 28 into a main liquid chamber 22A and a sub-liquid chamber 22B. The partition body 28 includes: an annular orifice forming member 32 comprising a rigid body which forms a first orifice flow path 30 at the outer periphery; and an elastic partition film 34, blocking the inside and partitioning the main liquid chamber 22A and the sub-liquid chamber 22B and composed of a rubber-like elastic body. In the elastic partition film 34, on the film face 34A at the side of the main liquid chamber, a flow path forming member 42 is integrally included, and at the inside of the flow path forming member 42, a second orifice flow path 44 extending along the film surface 34A is formed.
MAEKAWA HIROSHI
YASUKAWA AKIRA
SHIMAZU HIDEAKI
HASE KENGO
| JP2011256930A | 2011-12-22 | |||
| JP2011241926A | 2011-12-01 | |||
| JP2011256930A | 2011-12-22 | |||
| JP2008223968A | 2008-09-25 | |||
| JP2009144892A | 2009-07-02 |
| US4666137A | 1987-05-19 |
Masato Tsuda
Tetsuji Nakamura
Katsuyuki Tomita
Husband
Ariyoshi Yasuomi