Patent ID: 7128311

Claim:
An active vibration damping mount comprising: a first mounting member fixable to one of two members that are mutually connected to make up a vibration transmission system; a second mounting member fixable to an other one of the two members; a rubber elastic body connecting the first and second mounting members and partially defining a pressure receiving chamber which has a non-compressible fluid sealed therein; an oscillating member partially defining the pressure receiving chamber; and an actuator for exerting oscillation force on the oscillating member so that oscillation of the oscillating member is actuated by means of the actuator in order to control pressure in the pressure receiving chamber, wherein the actuator comprises a vibration damping actuator having: a cup-shaped housing having a guide hole disposed extending therethrough on a center axis thereof; an output member disposed spaced apart from an opening end of the housing; a guide rod disposed on the output member and positioned inserted into the guide hole; a coil member provided to one of the housing and the output member; an armature disposed on an other of the housing and the output member, the armature being adapted to exert actuating force on the output member by means of application of electric current to the coil member; an annular fixing member arranged about the output member with a spacing therebetween; a support rubber plate disposed in the spacing between the annular fixing member and the output member for elastically connecting the output member to the annular fixing member, an outside peripheral edge of the fixing member being caulked to an rim of an opening of the housing, whereby the output member is supported in an elastically displaceable manner by means of the housing; and a positioning projection formed at an inside peripheral edge of the fixing member by projecting the inside peripheral edge of the fixing member in cylindrical configuration in an axial direction towards an inside of the housing with a projected distal end thereof being projected in flange configuration toward an outside, the positioning projection provided for positioning the fixing member relatively in an axis-perpendicular direction with respect to an inner circumferential surface of the housing at a location situated inward by a predetermined distance from the opening of the housing, and the housing of the vibration damping actuator is fixed to the second mounting member, while the oscillating member constituted by means of the output member of the vibration damping actuator.