| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid sealing type vibration control device capable of easily and inexpensively damping highly along an extensive range in a low frequency region and making a dynamic spring constant in a high frequency region constant (flattening). SOLUTION: A liquid chamber 5 inside of a main body sandwiched by a vibration control base body 3 made of a rubber elastic body and a diaphragm 4 is partitioned into two chambers 5a, 5b by a partition body 6, and these two chambers 5a, 5b are communicated to each other through a orifice 7 provided on an outer peripheral part of the partitioning body 6. A second orifice 6a is made by opening a hole smaller in bore diameter in comparison with the orifice 7 on a central plate part 62 of the partition body 6, and the two chambers 5a, 5b are communicated to each other by the second orifice 6a. A total cross-sectional area of this orifice 6a is made less than 15% of a cross- sectional area of the orifice 7. |
