Patent ID: 6523815
Filing Date: 2003-02-25
Classification: F16F

Abstract:
A liquid-sealed vibration-proof device comprising a cylindrical fitting, an attachment fitting, a vibration-isolating base made of rubber elastomer through which to interconnect the cylindrical fitting and the attachment fitting, a diaphragm made of rubber membrane and a partition positioned inwardly of the diaphragm both hermetically fixed to an open side of the cylindrical fitting opposing the vibration-isolating base, thus partitioning an interior room between the vibration-isolating base and the diaphragm into two liquid chambers, and an orifice passage, through which to put both liquid chambers into communication with each other, provided in an outer periphery of the partition,wherein the vibration-isolating base is provided, at a marginal part of its inner side, with protruding portions for positioning, with which a marginal portion of the partition is in opposed contact, the protruding portions being located at a plurality of positions circumferentially spaced apart at required intervals so as to ensure the flow at a port opening of the orifice passage through the orifice passage.