| 摘要 |
PROBLEM TO BE SOLVED: To improve vibration control performance and durability by embedding a stopper member and a constraining member in rubber elastic body, and forming them integrally with a connecting part which connects both of them. SOLUTION: A main shaft metal fitting 1 is disposed on a supporting member of a vehicle body so that an outer cylinder metal fitting 4 may be connected to the supporting member of an engine and a main liquid chamber 33 may be positioned at its upper part which is in the main vibration inputting direction of the engine. An intermediate metal fitting 2 and the outer cylinder metal fitting 4, which are disposed in an eccentric condition against the main shaft metal fitting 1, is moved downwards by the dead weight of the engine and so on through the deformation of a rubber elastic body 3, and becomes in a roughly coaxial condition with the main shaft metal fitting 1. If vibration acts between the main shaft metal fitting 1 and the outer cylinder metal fitting 4, the vibration is damped effectively by the elasticity action of the rubber elastic body 3 and a liquid column resonance action of liquid L which flows through the main liquid chamber 33 and a sub liquid chamber 34 through an orifice passage 35. At this time, the vibration acts in such a direction as the main metal fitting 1 approaches the main liquid chamber 33 to pressurize the liquid L in the main liquid chamber 33, and a large amount of liquid L in the main liquid chamber 33 is flown into the orifice passage 35 effectively to exhibit a vibration control effect more substantially. |
