Patent ID: 6390459
Filing Date: 2002-05-21
Classification: F16F

Abstract:
A fluid-sealed anti-vibration device for insulating a car body from a source of vibration, comprising:a first connecting member for securing to the source of vibration; a second connecting member for securing to the car body; a substantially cone-shaped elastic body member positioned therebetween, the elastic body member further extending downward along a cylindrical inner surface of a side wall to form an inner lining section enclosing a main fluid chamber, wherein said main fluid chamber is formed by the first connecting member, the second connecting member, and the elastic body member, and wherein said main fluid chamber is separated by a partition member from a sub-fluid chamber beneath the main fluid chamber; an orifice formed in the partition member to communicate with the main fluid chamber and the sub-fluid chamber; a plurality of horizontally movable membranes integrally formed at intervals in the inner lining section of the elastic body, each of the plurality of horizontally moving membranes facing a circular hole in the side wall; and a circular control wall provided in the main fluid chamber, the circular control wall facing the plurality of horizontally movable membranes.