| 摘要 |
PROBLEM TO BE SOLVED: To provide an antivibration device capable of suppressing generation of cavitation while simplifying a constitution.SOLUTION: An antivibration device includes a first cylindrical mounting member 11 connected to one of a vibration generating portion and a vibration receiving portion, a second mounting member 12 connected to the other, an elastic body 13 connecting the first mounting member 11 and the second mounting member 12, a partitioning member 16 dividing a liquid chamber in the first mounting member 11 and enclosing a liquid L, into a main liquid chamber 14 and an auxiliary liquid chamber 15, and having a communication hole 51 for communicating the inside of the main liquid chamber 14 with the inside of the auxiliary liquid chamber 15, a movable portion 52 closing an opening portion at a main liquid chamber 14 side, of the communication hole 51, and an elastic supporting portion 53 disposed in the main liquid chamber 14, supporting the movable portion 52 elastically displaceable in a direction separating to the main liquid chamber 14 side with respect to the partitioning member 16, and opening and closing the communication hole 51. The movable portion 52 is disposed deformably or displaceably to the elastic supporting portion 53, and absorbs internal pressure fluctuation of the main liquid chamber 14.SELECTED DRAWING: Figure 1 |
