| 摘要 |
PURPOSE:To prevent the sudden rise of a dynamic spring constant when high frequency vibration is inputted without installing any special mechanism, while using no rubber body, but a spring ring as a main spring. CONSTITUTION:A first installation member 1 and a bottomed cylindrical second installation member 2 are mutually connected under fluid-tight state by a bellows member 3 so that a liquid chamber 11 in which liquid L is enclosed is formed in a space toward a diaphragm 6. The upper part 4a of a spring ring 4 is fixed to the first installation member 1, and the lower part 4b thereof makes contact with a partitioning body 5 under its pressed condition so as to be supported by the second installation member 2. The outer circumferential surface 41 of the lower half part of the spring ring 4 is surrounded by the inner circumferential surface 71 of the cylindrical part 7a of the second installation member 2 so that a small liquid chamber part 11a to generate liquid flow to other parts through a clearance 14 by liquid pressure fluctuation when a high frequency is inputted, may be formed. The following way may be allowed that high viscous liquid and low viscous liquid which respectively make the cross sectional shape of the cylindrical part in a rectangular, oval or circular shape, are separately filled in the upper/lower parts of the liquid chamber which is constituted of more than two spring rings shifted around a shaft X. |
