Patent ID: 6598863
Filing Date: 2003-07-29
Classification: F16F

Abstract:
A fluid filled cylindrical elastic mount comprising:a center shaft member; an intermediate sleeve member disposed radially outwardly of said center shaft member, said intermediate sleeve member having a plurality of cutouts formed therethrough, and having a circumferential groove formed in an axially intermediate portion thereof and being open in an outer circumferential surface thereof; an elastic body interpose between said center shaft member and said intermediate sleeve member and having a plurality of pockets formed at respective circumferential posit ions thereof, said plurality of pockets being open in an outer circumferential surface of said intermediate sleeve member through said plurality of cutouts, respectively; an outer sleeve member fitted on said intermediate sleeve member so as to close said plurality of cutouts and cooperating with said plurality of pockets to define a plurality of fluid chambers which are filled with non-compressible fluid; and an orifice member for defining an orifice passage for fluid communication between said plurality of fluid chambers, said orifice member being disposed in at least one of said plurality of cutouts so as to extend over an entire circumferential length of said at least one cutout, and being supported by said intermediate sleeve member such that circumferential opposite end portions of said orifice member are fitted in said circumferential groove on the sides of circumferentially opposite edges of said at least one cutout, respectively, while having an orifice groove which is formed and open in an outer circumferential surface of said orifice member, which is fluid-tightly closed by said outer sleeve member to thereby provide said orifice passage, said orifice member having an axial length which varies in the circumferential direction thereof such that said orifice member is held in abutting contact with axially opposite edges of said at least one cutout in a circumferentially intermediate portion of said at least one cutout, and that said orifice member is spaced apart from at least one of said axially opposite edges of said at least one cutout in said axial direction thereof in at least one of circumferentially opposite end portions of said at least one cutout so as to provide an opening through which a corresponding pocket is open in said outer circumferential surface of said intermediate sleeve member.