Patent ID: 6753630
Filing Date: 2004-06-22
Classification: B06B,G10K,H04R

Abstract:
A vibrating actuator provided with a coil for applying current, a diaphragm fastening the coil on one side, a magnet to form a magnetic circuit, a magnetic yoke supporting this magnet, and an oscillation plate that supports this magic yoke, wherein the diaphragm is mounted within the frame of a case by a lip with a magnetic gap between the coil and the magnetic yoke, and an oscillation plate is mounted within the frame of the case at an edge, said actuator operates the diaphragm and oscillation plate by the attraction/repulsion of magnetism of the magnet and magnetism of the coil, said actuator characterized by the provision of a magnetic yoke having a flange that projects toward the inner wall surface of the case from the outer peripheral surface as a stopper against impact.