| 摘要 |
PURPOSE:To reduce the dynamic spring constant at the time of high frequency and small amplitude by causing an elastic substance, which is interposed between a mounting member and a supporting member, to constitute a part of two fluid chambers which are adjacent by means of a partition provided with an orifice to each other. CONSTITUTION:A mounting member 11 attached to a vibrating substance and a supporting member 21 attached to the supporting substance side are connected by means of an elastic member 41 with each other. There are provided fluid chambers 7, 8 which are adjacent by means of a partition 61 provided with an orifice 91 to each other, and filled with an incompressible fluid inside. In the partition 61 is incorporated a movable partition member 101 which is designed in such a manner that it crosses the orifice 91 and floats within the orifice 91 in response to a change in the fluid pressure. Hereupon, since each orifice 91 is in the shape of an unfolded fan towards the partition member 101 in the fluid chamber 7 side, the area of subjected pressure in the partition member 101 is large and the area of contact between the partition member 101 and the partition 61 is small, and consequently, in the case where vibration of medium-high frequency and small amplitude are applied, the dynamic spring characteristics can be prevented from becoming worse. |
