Patent ID: 6910683

Claim:
A fluid-sealed anti-vibration device, comprising: a first attachment member; a second attachment member; a vibration insulating base, made of a rubber material, connectingly interposed between the first and second attachment members; a diaphragm, on the second attachment member, opposite to the vibration-insulating base; a fluid-sealed chamber, disposed between the vibration-insulating base and the diaphragm; a partition member, comprising an elastic membrane, having opposite surfaces, for partitioning the fluid sealed chamber into a first chamber at a vibration-insulating base side, and a second chamber at a diaphragm side; an orifice channel in communication with the first chamber and the second chamber; a pair of grids for limiting displacement of the elastic membrane; and a plurality of projections, arranged in a framework structure, between either surface of the elastic membrane and respective surfaces of the grids facing either surface, said projections surrounding through-holes delimited by the grids over an entire periphery of each through-hole, and regulating transfer of fluid among adjacent through-holes.