| 摘要 |
PROBLEM TO BE SOLVED: To reduce vibrations over a wide range of frequencies without increasing manufacturing costs. SOLUTION: An intermediate cylinder 22 and an intermediate block 24 are arranged inside an outer cylinder metal fitting 16, and a space partitioned by the intermediate block 24 and an elastic body 28 constitutes a main liquid chamber 30. A shake orifice 64 and an idle orifice 60 communicate the main liquid chamber 30 with a first auxiliary liquid chamber 32. An orifice 62 for confirming communicates the main liquid chamber 30 with a second auxiliary liquid chamber 96 and a rotor 36 opens and closes the idle orifice 60 and the orifice 62 for confirming. In this case, a thick-walled high-rigidity part 20C is provided in such a way as to be sandwiched between a pair of thin-walled low-rigidity parts 20B, 20D provided in a first diaphragm 20 along the flow direction F of a liquid which flows into and out of the first auxiliary liquid chamber 32. |
