Fluid-filled vibration damping device and method of manufacturing the same

A method of manufacturing a fluid-filled vibration damping device comprising:

• a main rubber body forming process in which a first mounting member and a second mounting member prepared in advance are elastically connected by a main rubber elastic body to obtain an integrally vulcanization molded component of the main rubber elastic body incorporating the first and second mounting members;
• a sealing rubber forming process in which a sealing rubber layer is formed so as to cover at least one of an outer peripheral face of the second mounting member and an inner peripheral face of a tubular fitting member prepared in advance, the sealing rubber layer being provided with a pressure-relieving lip protruding therefrom and extending toward openings of the second mounting member and the tubular fitting member;
• an assembly process in which the tubular fitting member is externally slipped around the second mounting member of the integrally vulcanization molded component of the main rubber elastic body and subjected to a drawing operation within a non-compressible fluid so as to provide a fluid chamber with the non-compressible fluid sealed therein, and the tubular fitting member is externally fitted onto the second mounting member while the pressure-relieving lip is pressed against one of the second mounting member and the tubular fitting member in a direction of protrusion so that the sealing rubber layer is depressed on both sides of the pressure-relieving lip and the fluid chamber communicates with an outside;
• and
• a sealing process in which the tubular fitting member is further constricted in diameter and the sealing rubber layer is compressed between the second mounting member and the tubular fitting member so as to provide a fluid-tight sealing between superposed faces of the second mounting member and tubular fitting member to completely close the fluid chamber.