Patent ID: 6523813
Filing Date: 2003-02-25
Classification: F16F

Abstract:
A fluid-filled vibration-damping device for connecting two members in a vibration damping fashion, comprising:a first mounting member adapted to be fixed to one of the two members; a second mounting member adapted to be fixed to an other one of the two members, said second mounting member having a cylindrical portion and being disposed relative to said first mounting member such that one of axially opposite open-end portions of said cylindrical portion of said second mounting member is opposed to said first mounting member with an axial spacing therebetween; an elastic body elastically connecting said first mounting member and said second mounting member with an outer circumferential surface thereof being bonded to said cylindrical portion of said second mounting member; a first partition member fixedly supported by said cylindrical portion of said second mounting member so as to form at one of axially opposite sides thereof a pressure-receiving chamber partially defined by said elastic body and at an other one of axially opposite sides thereof an equilibrium chamber partially defined by a flexible layer, said pressure-receiving chamber and said equilibrium chamber being filled with a non-compressible fluid, and being held in fluid communication with each other through a first orifice passage at least partially defined by said first partition member; a movable member partially defining said pressure-receiving chamber and being supported by said first partition member in a movable manner; a working air chamber being defined by and between said movable member and said first partition member and being open to an external area through an air passage formed through said first partition member; and a fixing member having a fixing sleeve portion and fixedly assembling a peripheral portion of said flexible layer to said first partition member, wherein said first partition member includes a first fixing groove and a second fixing groove, which are axially spaced apart from each other and open in an outer circumferential surface of said first partition member, while extending in a circumferential direction of said first partition member, and said first partition member is assembled at one of axially opposite end portions thereof with said second mounting member such that said cylindrical portion of said second mounting member is fixedly disposed radially outwardly on said one of axially opposite end portions of said first partition member with an other one of axially opposite open-end portions of said cylindrical portion thereof being press-fitted into said first fixing groove of said first partition member, and at an other one of axially opposite end portions thereof with said fixing member such that said fixing sleeve portion of said fixing member is fixedly disposed radially outwardly on said other one of axially opposite end portions of said first partition member with one of axially opposite open-end portions of said fixing sleeve portion being press-fitted into said second fixing groove of said first partition member, and wherein said air passage being open in an axially intermediate portion of said outer circumferential surface of said first partition member, which is axially interposed between said first and second fixing grooves and exposed to an atmosphere, such that an opening of said air passage is connectable to an external air conduit.