| 摘要 |
A vibration damping device includes a first cylindrical attachment member (11) which is connected to one of a vibration generating portion and a vibration receiving portion, a second attachment member (12) which is connected to the other thereof, an elastic body (13) which connects both attachment members (11 and 12), and a partition member (17) which divides a liquid chamber (14), in which a liquid (L) is sealed and which is positioned within the first attachment member (11), into a primary liquid chamber (15) having the elastic body (13) as a portion of a wall surface, and into a secondary liquid chamber (16). Limiting passages (21 and 22) which communicate with the primary liquid chamber (15) and the secondary liquid chamber (16) are formed in the partition member (17). The limiting passages (21 and 22) include the first limiting passage (21) which generates resonance with respect to input of idle vibration, and the second limiting passage (22) which generates resonance with respect to input of shake vibration. Flow regulation chambers (23 and 24) which communicate with the primary liquid chamber (15) or the secondary liquid chamber (16) and the first limiting passage (21) are provided in the partition member (17). The flow regulation chambers (23 and 24) convert the flow of the liquid (L), which flows into the flow regulation chambers (23 and 24) during the input of shake vibration, into a swirl flow. |
