Fluid filled vibration damping device

A fluid filled vibration damping device comprising:

• a first mounting member;
• a second mounting member having a generally hollow cylindrical shape, and situated with a first opening thereof opposed to the first mounting member with an axial spacing therebetween, the second mounting member having a shoulder portion so that a large diameter cylindrical caulking portion is integrally formed at a second opening thereof;
• a rubber elastic body disposed between the first mounting member and the first opening of the second mounting member, and elastically connecting the first and second mounting members to thereby fluid-tightly close the first opening of the second mounting member;
• a lid member having an annular fixing member, and fixed by caulking fixation to the second mounting member with the annular fixing member press fit into the cylindrical caulking portion to be superimposed on the shoulder portion, to thereby fluid-tightly close the second opening of the second mounting member;
• a fluid chamber formed between the rubber elastic body and the lid member, and filled with a non-compressible fluid;
• a partition member installed within the fluid chamber, and having an outside diameter smaller than an inside diameter of the cylindrical caulking portion of the second mounting member;
• a plurality of engaging projections formed onto the partition member by rising up respective portions of an outer peripheral portion of the partition member in uplift cutout form toward one side of the partition member,
• the engaging projections being fit axially inwardly into the second mounting member with the partition member superimposed on the shoulder portion of the second mounting member so that the engaging projections are held in direct or indirect engagement with an inner circumferential surface of the second mounting member, and that the partition member is positioned in an axis-perpendicular direction with respect to the second mounting member;
• and
• a sealing portion disposed to check a flow of the non-compressible fluid through cutout openings left after the engaging projections have been formed and wherein said cut out openings are formed radially inside of the engaging projections.