Patent ID: 6534886
Filing Date: 2003-03-18
Classification: H02K

Abstract:
A flat type vibration motor comprising:a lower case; an upper case which covers an upper portion of the lower case; a shaft which connects the center of the lower case with the center of the upper case and supports them; a lower substrate attached to one portion on an upper side of the lower case; a magnet attached to the lower substrate and the upper side of the lower case; a round shaped thin upper substrate rotatably supported in the shaft; a commutator provided with a plurality of segments on the circumference of the center of the shaft at the bottom of the upper substrate; a pair of brushes of which one end is fixed tot he lower substrate and other end is in contact with the commutator to be electrically connected with the commutator; a paid of winding coils arranged separated from each other at a constant angle toward one side of the upper substrate; a weight arranged toward a side of the upper substrate opposite to the winding coil; an insulator of resin filled between the winding coils and the weight, for firmly fixing the winding coils and the weight to the upper substrate.