COIN-TYPE VIBRATION MOTOR

摘要

PROBLEM TO BE SOLVED: To improve vibration force in a vertical direction without increasing power consumption in a coin-type vibration motor to a portable telephone.;SOLUTION: A rotor side vertical vibration magnet is bonded to a tip portion of a rotor. A fixing side vertical vibration magnet is made to confront with the rotor side vertical vibration magnet, and S poles and N poles are alternately arranged on an inner side of a case. When the rotor rotates, vibration in a horizontal direction occurs by a weight at the tip portion of the rotor, and the rotor side vertical vibration magnet and the fixing side vertical vibration magnet repeat repulsion and attraction. Thus, the vibration in the vertical direction also occurs. Since the vibration in the vertical direction occurs by a magnetic action, power consumption does not increase.;COPYRIGHT: (C)2012,JPO&INPIT