Patent ID: 7679228

Claim:
An active vibration-isolating support system comprising: an elastic member resiliently supporting a vibrating member on a support structure; a chamber defined by the elastic member and containing a liquid therein in a sealed manner; a movable member adapted to change a volume of the chamber; and an electromagnetic actuator that drives the movable member, wherein the electromagnetic actuator comprises: a bottomed cylindrical housing supported on the support structure, a movable core connected, via a connecting device, to the movable member, a yoke fixed to an open upper end of the housing, and a coil assembly which is excited to generate a magnetic circuit in the movable core and the yoke for operating the movable core in a direction to drive the movable member, wherein the coil assembly is held by the yoke and a bottom wall of the housing, wherein a tubular bearing member, which slidably supports the movable core, is held on the housing, and wherein a low-friction material coating is provided on an outer peripheral surface of the movable core opposed to the bearing member, wherein the connecting device comprises: a connecting bolt secured to the movable member and axially extending through the movable core, and an adjusting nut threadedly fitted over a tip end of the connecting bolt to support the movable core and moving the movable core toward and away from the movable member by movement of a position of the adjusting nut, and wherein a lock screw is threadedly engaged with the adjusting nut to fix the adjusting nut at an adjusted position thereof.