Fluid-filled vibration damping device

A fluid-filled vibration damping device comprising:

• a first mounting member;
• a second mounting member;
• a main rubber elastic body elastically connecting the first and second mounting members;
• a partition plate supported by the second mounting member;
• a pressure-receiving chamber disposed on one side of the partition plate and filled with a non-compressible fluid;
• an equilibrium chamber disposed on another side of the partition plate and filled with the non-compressible fluid;
• a first orifice passage which connects the pressure-receiving chamber and the equilibrium chamber;
• a moveable film arranged to either a pressure-receiving chamber side or an equilibrium chamber side of the partition plate and being spaced a prescribed distance away therefrom to define an intermediate chamber situated between opposed faces of the partition plate and the moveable film such that the moveable film is elastically deformable while being held at an outer peripheral edge thereof;
• a second orifice passage which connects the intermediate chamber and one of the pressure-receiving chamber and the equilibrium chamber which are separated from the intermediate chamber by the partition plate, the second orifice passage being tuned to higher frequency than the first orifice passage;
• and
• a flow straightening plate being arranged in opposition to the moveable film from at least one of the intermediate chamber side and an opposite side thereof, the flow straightening plate having a plurality of flow straightening apertures formed therein opening towards the moveable film and being furnished with a flow limiting member, the flow limiting member being formed on the flow straightening plate and being adapted to limit fluid flow level through the flow straightening apertures at times of input of vibration in a frequency range to which the first orifice passage has been tuned.