Patent ID: 7537202
Filing Date: 2009-05-26
Classification: F16F

Abstract:
1. An active vibration damping device comprising: a first mounting member and a second mounting member, the mounting members attachable respectively to components linked to each other to make up a vibration transmission system; a main rubber elastic body elastically linking the first and second mounting members, defining one portion of a wall of a pressure receiving chamber having a non-compressible fluid sealed therein; an oscillation member defining another portion of the wall of the pressure receiving chamber; a solenoid actuator including: a stator having a coil and a yoke member attached about the coil to form a stator-side magnetic path with a guide hole extending along a center axis thereof; and a movable element positioned inserted into the guide hole of the stator so that actuating force in an axial direction is create between the stator and the movable element by means of supplying electrical current to the coil, the stator of the solenoid actuator being affixed to the second mounting member and the movable element being attached to the oscillation member so as to actively control pressure in the pressure receiving chamber by exciting actuation of the oscillation member; and a bias urging assembly for urging the movable element in one direction in an axis-perpendicular direction with respect to the stator so that the movable element assumes a generally linear contact with respect to an inside face of the guide hole.