| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid-sealed vibration isolating mount which obtains a vibration isolating effect in two or more mutually different frequency regions by a simple structure. SOLUTION: In a lower side from an inner cylinder 1, a main fluid chamber 5 is provided, between a recessed part 4b and an outer cylinder 2, a partition wall 8 is provided, a first/second sub fluid chamber 6, 7 is formed, in an upper side of the inner cylinder, a through space 8 is provided, the through space and each sub fluid chamber are partitioned by a cylinder wall of the recessed part of an intermediate cylinder. Relating to the main fluid chamber, the first sub fluid chamber is made to communicate by a first orifice 9 of thin width, the second sub fluid chamber is made to communicate by a second orifice 10 of wide width. Each sub fluid chamber is sealed with liquid 12 and air 13, a second air chamber part 7b sealed with air is set to a small capacity compressed, when low frequency vibration is input, so as to limit a flow of fluid through the second orifice. A communication hole 8a is provided in the partitioning wall, by setting a hole diameter, at stationary time, liquid circulation between both the sub fluid chambers is permitted, to automatically correct an air amount of each air chamber part 6b, 7b, at vibration input time, so as to substantially interrupt liquid circulation. |
