Patent ID: 9719575
Date: 2017-08-01
CPC Classifications: B60K,F16F

Claim:
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 of the vibration generating part and the vibration receiving part; an elastic body coupling both of the attachment members; a partitioning member that is fitted into the first attachment member and forms a main liquid chamber having the elastic body as a portion of a wall surface of the main liquid chamber, and a first auxiliary liquid chamber and a second auxiliary liquid chamber provided independently from the main liquid chamber; a first diaphragm that constitutes a portion of a wall surface of the first auxiliary liquid chamber; and a second diaphragm that constitutes a portion of a wall surface of the second auxiliary liquid chamber and that has a smaller deformation resistance than the deformation resistance of the first diaphragm, wherein the partitioning member is provided with an idle orifice that allows the main liquid chamber and the first auxiliary liquid chamber to communicate with each other and that produces resonance with respect to the input of an idle vibration, and a shake orifice that allows the main liquid chamber and the second auxiliary liquid chamber to communicate with each other and that produces resonance with respect to the input of a shake vibration, and wherein an adjustment chamber having an interior capable of being decompressed or compressed with respect to standard pressure or being open so as to be capable of being blocked with respect to the outside, is provided adjacent to the second auxiliary liquid chamber with the second diaphragm interposed therebetween.