VIBRATION-DAMPING DEVICE

摘要

Swirl chamber units (31) allowing a first liquid chamber (14) and a second liquid chamber (15) to communicate with each other are formed in a partitioning member of a vibration-damping device (10) of the present invention. Each swirl chamber unit (31) includes a first communication hole (32a) opening to the first liquid chamber (14), and a second communication hole (32b) opening to the second liquid chamber (15); a first swirl chamber (33a) communicating with the first liquid chamber (14) via the first communication hole (32a), and a second swirl chamber (33b) communicating with the second liquid chamber (15) via the second communication hole (32b); and a flow regulation passage (34) that allows the first swirl chamber (33a) and the second swirl chamber (33b) to communicate with each other and opens to the swirl chambers (33a, 33b) in circumferential directions of the respective swirl chambers (33a, 33b). The first and second swirl chambers (33a, 33b) are formed so that a liquid flowing into the interiors of the chambers from the flow regulation passage (34) is swirled according to the flow speed of the liquid. By including the configuration as described above, simplification of structure and facilitation of manufacture can be achieved, while guaranteeing the product characteristics of the vibration-damping device.

主权项

1. A vibration-damping device comprising:
a tubular first attachment member coupled to any one of a vibration generating part and a vibration receiving part, and a second attachment member coupled to the other thereof; an elastic body coupling both of the attachment members; a partitioning member that partitions a liquid chamber within the first attachment member having a liquid enclosed therein into a first liquid chamber and a second liquid chamber, wherein at least any one of the two liquid chambers of the first liquid chamber and the second liquid chamber has the elastic body on a portion of the wall surface thereof, wherein a swirl chamber unit allowing the first liquid chamber and the second liquid chamber to communicate with each other is formed in the partitioning member, wherein the swirl chamber unit includes: a first communication hole opening to the first liquid chamber, and a second communication hole opening to the second liquid chamber; a first swirl chamber communicating with the first liquid chamber via the first communication hole, and a second swirl chamber communicating with the second liquid chamber via the second communication hole; and a flow regulation passage that allows the first swirl chamber and the second swirl chamber to communicate with each other and opens to the swirl chambers in circumferential directions of the respective swirl chambers, and wherein the first and second swirl chambers are formed so that a liquid flowing into the interiors of the chambers from the flow regulation passage is swirled according to the flow speed of the liquid.