Fluid-filled damper device

Claim 1

A fluid-filled damper device comprising: two support members, consisting of a first support member to be coupled to a support element and a second support member to be coupled to a suspended element; a thick elastic block comprising a deformable, elastic material and having an outer peripheral edge fixed to the first support member and a substantially central portion fixed to the second support member for elastically coupling said first and second support members so as to allow relative movement therebetween in at least one direction wherein a sealed space is formed surrounded by at least said thick elastic block, an elastic bottom plate for sealing an end of said first support member which is opposite to the side of said second support member and said first support member wherein a liquid is disposed in said sealed space; a solenoid arranged at an inner wall of said first support member, said solenoid having a space at a central portion thereof and an attractive/fixing surface substantially perpendicular to said one direction of relative movement; a plate-shaped partition member interposed between said attractive/fixing surface of said solenoid and said elastic block, and having an outer peripheral edge thereof fixed to an inner peripheral edge of an elastic sheet made of a deformable, elastic material which is fixed at an outer peripheral edge thereof to said first support member, and a movable member movably provided in the interior thereof for a short distance along said one direction of relative movement, said partition member being movable along said one direction of relative movement by the deformation of said elastic sheet; and at least one fluid passage formed in a wall portion constituting said first support member, said fluid passage having open ends each of which is opening in said sealed space at each of both side positions of said attraction/fixing surface of said solenoid along said one direction of relative movement, respectively, and imparting flow resistance to the liquid flowing therethrough, whereby said partition member is adherently held to said attraction/fixing surface of said solenoid against elasticity of said elastic sheet by excitation of said solenoid so as to divide said sealed space into first and second chambers, and wherein said fluid passage communicates between said first and second chambers.