| 摘要 |
The invention is aimed at lowering the dynamic spring constant, particularly in a high frequency spectrum of about 150~300 Hz as well, for a vibration-proof device wherein an annular liquid chamber is provided in a rubber elastomer between an internal cylinder member and an external cylinder member. To that end, within the chamber there is provided an annular stirring member projecting from an inner periphery side of the external cylinder member inboard toward a chamber wall face on the internal cylinder member side so as to hold a clearance therebetween, whereby upon inputting of vibrations, the dynamic spring constant is adapted to be lowered by the resonance action due to the fluidization of liquid flowing vertically through the clearance within the chamber.
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