Patent ID: 7866639

Claim:
A fluid-filled cylindrical vibration-damping device comprising: an inner shaft member; an outer cylindrical member spaced apart peripherally outward from the inner shaft member; a main rubber elastic body elastically connecting the inner shaft member and the outer cylindrical member with each other; a plurality of pocket portions provided in the main rubber elastic body so as to open onto an outer peripheral face of the main rubber elastic body; a plurality of fluid chambers defined by covering the pocket portions with the outer cylindrical member each filled with a non-compressible fluid; at least one orifice passage connecting the plurality of fluid chambers with one another, wherein: the plurality of fluid chambers comprise a pair of first fluid chambers opposed to each other in a first diametric direction with the inner shaft member being interposed therebetween and a pair of second fluid chambers opposed to each other in a second diametric direction orthogonal to the first diametric direction; and partition walls that circumferentially partition the first fluid chambers and the second fluid chambers respectively, each of the partition walls extending in a direction in more proximity to the first diametric direction in which the pair of the first fluid chambers are opposed to each other than to the second diametric direction in which the pair of the second fluid chambers are opposed to each other so that spring rigidity that is adapted to be exhibited by the partition walls at times of vibration input in the first diametric direction is set greater than spring rigidity that is adapted to be exhibited by the partition walls at times of vibration input in the second diametric direction, wherein in projection view in the first diametric direction, entire first fluid chambers overlap the inner shaft member while at least a part of the partition walls which partially defines walls of the first fluid chambers overlaps the inner shaft member along an entire diametrical length thereof; and in projection view in the second diametric direction, both circumferential end portions in the pair of the second fluid chambers extend beyond the inner shaft member.