| 摘要 |
PURPOSE: A vibration motor is provided to minimize the volume of the vibration motor, while increasing vibrations by maximizing the repulsive force and attraction force generated between the coils and magnet. CONSTITUTION: A vibration motor comprises a case including an upper case(11) and a lower case(12), wherein the upper case has an inner surface where a space for mounting one or more pairs of coils(16a,16b) is formed, and the upper case and the lower case have inner surfaces where a fixing groove(14) and a fixing hole(22) for fixing a rotating shaft(20) are formed; one or more pair of coils opposed to each other in the space formed in the upper case and wound in an opposite direction in such a manner that the coils form a magnetic force of a polarity opposed to the polarity of a magnet(18); and the magnet spaced apart from the coils and eccentrically coupled with the rotating shaft in such a manner that the magnet is rotatable centering from the rotating shaft by the attraction force and repulsive force generated between the coils and magnet.
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