| 摘要 |
PROBLEM TO BE SOLVED: To suppress abnormal noise from being generated and to achieves simplification of a structure and facilitation of manufacture.SOLUTION: A vibration isolation device 10 includes a first fitting member 11 and a second fitting member 12, an elastic body 13, and a partition member 16, which has limit passages 31, 32 formed. The limit passages 31, 32 are a first limit passage 31 and a second limit passage 32, and on an inner peripheral surface of the first limit passage 31, flow change projection parts 33, 34 are provided which project inward radially in the first limit passage 31 and change a flow of a liquid L flowing in the first limit passage 31 along its axis. The first limit passage 31 and the flow change projection parts 33, 34 are symmetrical about the axis in a longitudinal section passing the axis of the first limit passage 31 and the flow change projection parts 33, 34, and projection end parts of the flow change projection parts 33, 34 form inner peripheral edge parts of passage holes 33c, 34c opened toward both axial sides. |
