Fluid-filled elestic mount having low-and medium-frequency vibration damping orifices, and high-frequency vibration isolating movable member

摘要

A fluid-filled elastic mount having elastic body (16) partially defining a pressure-receiving chamber (48), a flexible layer (44) partially defining an equilibrium chamber (50) communicating with the pressure-receiving chamber through first and second orifices (60, 66), a presser member (74) normally biased to force the flexible layer to close the second orifice at its one end on the side of the equilibrium chamber and partially defining an operating chamber (88) which is exposed to a reduced pressure to permit the flexible layer to be moved for enabling the second orifice to normally function, and a movable member (100) partially defining an auxiliary chamber (112) which is exposed to the reduced pressure to disable the movable member to normally function.