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

A fluid-filled vibration-damping device comprising:

• a first mounting member;
• a second mounting member having a generally cylindrical configuration and being spaced apart from said first mounting member with one of axially opposite open-end portions thereof opposed to said first mounting member;
• an elastic body elastically connecting said first and second mounting member while fluid-tightly closing said one of opposite open-end portions of said second mounting member;
• an annular first support member;
• a movable rubber plate bonded at a peripheral portion thereof to said annular first support member;
• an annular second support member;
• a flexible rubber layer bonded at a peripheral portion thereof to said annular second support member;
• a flexible rubber layer bonded at a peripheral portion thereof to an annular second support member;
• said movable rubber plate and flexible rubber layer being axially assembled with each other and fixed to an other one of axially opposite open-end portions of said second mounting member by means of caulking of said other one of axially opposite end portions of the second mounting member against said first and second support members so as to fluid tightly close said other one of axially opposite open-end portions of the second mounting member such that said elastic body and said movable rubber plate cooperate to form therebetween a primary fluid chamber to which a vibrational load is applied and said movable rubber plate and said flexible rubber layer cooperate to form therebetween an auxiliary fluid chamber, said primary and auxiliary fluid chamber being filled with non-compressible fluid and held in fluid communication with each other through an orifice passage that is formed between said first and second support members so as to extend circumferentially;
• a partition member disposed in said auxiliary fluid chamber with an peripheral portion thereof forcedly held by and between said first and second support members, so as to divide said auxiliary fluid chamber into an intermediate chamber partially defined by said movable rubber plate and an equilibrium chamber partially defined by said flexible rubber layer;
• and
• a fluid passage for fluid communication between said intermediate chamber and said equilibrium chamber,
• wherein said partition member includes an engaging piece extending toward and being engaged with one of said first and second support members so as to enable said partition member to be provisionally fixed to said one of said first and second support members for assembly of said partition member, and
• wherein said engaging piece comprises a plurality of engaging pieces that are formed at respective circumferential portion in a peripheral portion of said partition member.

A method of producing a fluid-filled vibration-damping device including:

• a first mounting member;
• a second mounting member having a generally cylindrical configuration and being spaced apart from said first mounting member with one of axially opposite open-end portions thereof opposed to said first mounting member;
• an elastic body elastically connecting said first and second mounting member while fluid-tightly closing said one of opposite open-end portions of said second mounting member;
• an annular first support member;
• a movable rubber plate bonded at a peripheral portion thereof to said annular first support member;
• an annular second support member:
• a flexible rubber layer bonded at a peripheral portion thereof to said annular second support member, said movable rubber plate and flexible rubber layer being axially assembled with each other and fixed to an other one of axially opposite open-end portions of said second mounting member by means of caulking of said other one of axially opposite end portions of the second mounting member against said first and second support members so as to fluid tightly close said other one of axially opposite open-end portions of the second mounting member such that said elastic body and said movable rubber plate cooperate to form therebetween a primary fluid chamber to which a vibrational load is applied and said movable rubber plate and said flexible rubber layer cooperate to form therebetween an auxiliary fluid chamber, said primary and auxiliary fluid chamber being filled with non-compressible fluid and held in fluid communication with each other through an orifice passage that is formed between said first and second support members so as to extend circumferentially;
• a partition member disposed in said auxiliary fluid chamber with an peripheral portion thereof forcedly held by and between said first and second support members, so as to divide said auxiliary fluid chamber into an intermediate chamber partially defined by said movable rubber plate and an equilibrium chamber partially defined by said flexible rubber layer;
• and a fluid passage for fluid communication between said intermediate chamber and said equilibrium chamber, wherein said partition member includes an engaging piece extending toward and being engaged with one of said first and second support members so as to enable said partition member to be provisionally fixed to said one of said first and second support members for assembly of said partition member, and wherein said first and second support members include respective sealing rubbers formed at respective portions by which said peripheral portion of said partition member is forcedly held so that said peripheral portion of said partition member is fluid-tightly forcedly held by and between said first and second support members via said sealing rubbers, said method comprising the steps of:
• provisionally fixing said partition member to said one of said first and second support members by engaging said engaging piece of said partition member with said one of said first and second support members;
• superposing said one of said first and second support members to which said partition member is provisionally fixed, and an other one of said first and second support members on each other in an axial direction thereof;
• and then
• fluid-tightly fixing said first and second support members superposed on each other to said other one of axially opposite open-end portions of said second mounting member by means of said caulking.