Fluid-filled vibration damping device

A fluid-filled vibration-damping device for connecting two members in a vibration damping fashion, comprising:

• a first mounting member connectable to one of the two members;
• a second mounting member connectable to an other of the two members;
• an elastic body bonded at a central portion thereof to said first mounting member and at an outer circumferential portion thereof to said second mounting member in a process of vulcanization of a rubber material for forming said elastic body, for elastically connecting said first and second mounting members;
• a pressure-receiving chamber disposed on one of axially opposite sides of said elastic body, filled with a non-compressible fluid and partially defined by said elastic body, to which a vibrational load is applied;
• a flexible rubber layer disposed on an other one of said axially opposite sides of said elastic body so as to form an equilibrium chamber between said flexible rubber layer and said elastic body, said equilibrium chamber being filled with said non-compressible fluid and partially defined by said flexible rubber layer so as to easily permit a volumetric change thereof;
• and
• a first orifice passage for fluid communication between said pressure-receiving chamber and said equilibrium chamber;
• wherein said first mounting member includes an elastic-body central member bonded to said central portion of said elastic body, and a rubber-layer central member bonded to a central portion of said flexible rubber layer and having a fixing portion at which said first mounting member is connected to the one of the two members, and said elastic-body central member and said rubber-layer central member are superposed on and fixed to each other at their abutting surfaces by means of a fixing mechanism, to thereby constitute said first mounting member,
• wherein one of said elastic-body central member and said rubber-layer central member has a fitting recess open in said abutting surface thereof, and an other one of said elastic-body central member and said rubber-layer central member has a fitting protrusion formed on said abutting surface thereof and being fitted into said fitting recess so that said elastic-body central member and said rubber-layer central member are positioned relative to each other, and
• wherein an interface between said abutting surfaces of said elastic-body central member and said rubber-layer central member has a first peripheral portion entirely facing said equilibrium chamber and a second peripheral portion entirely facing said pressure-receiving chamber.