| 摘要 |
A vibration-damping device (1) is provided with a partition member (40) and a diaphragm (50), which are mounted to an insulator (30). The partition member (40) is provided with a lower holder (41) which is mounted to the insulator (30) and an elastic diaphragm member (43) which is mounted to the lower holder (41). A first orifice passage (45) is formed in the lower holder (41), and a second orifice passage (46) is formed in the gap between the elastic diaphragm member (43) and the displacement prevention section (41g) of the lower holder (41). When the amplitude of vibration is greater than a predetermined amplitude, the gap between the elastic diaphragm member (43) and the displacement prevention section (41g) is closed by the elastic diaphragm member (43). As a result of this configuration, vibration in different frequency regions can be damped by the two types of the orifice passages (45, 46) without increasing the number of parts. |
