Patent ID: 9435396
Filing Date: 2016-09-06
CPC Classification: B60K,F16F

Claim Text:
1. A vibrationproof device which is a liquid sealed vibrationproof device comprising: a tubular first mounting member that is connected to either one of a vibration generating portion and a vibration receiving portion; a second mounting member that is connected to other one of the vibration generating portion and the vibration receiving portion; an elastic body that elastically connects the first mounting member and the second mounting member to each other; and a partition member that partitions a liquid chamber of the inside of the first mounting member into a main liquid chamber of a lower side having the elastic body as a portion of a wall surface and an auxiliary liquid chamber of an upper side, wherein a restricting passage is formed which communicates with the main liquid chamber and with the auxiliary liquid chamber and in which a liquid column resonance is generated due to the fact that a liquid in the liquid chamber is circulated, a sealed liquid is sealed in the liquid chamber, the sealed liquid contains a first liquid as a main liquid and a second liquid as an added liquid which is insoluble in the first liquid, a vapor pressure of the second liquid is higher than a vapor pressure of a main component of the first liquid in the same temperature and a specific gravity of the second liquid is heavier than a specific gravity of the first liquid, and the second liquid is dispersed into a plurality of places in the first liquid, when receiving a vibration.