| 摘要 |
PROBLEM TO BE SOLVED: To improve efficiency of a motor, reduce heat generation, restrain demagnetization and improve reliability, by reducing eddy current loss in a movable magnet body by using an insulating thin plate. SOLUTION: A linear vibration motor 10 is provided with a stator core 18 constituted of a first magnetic material core 12 having a coil 14 and a second magnetic material core 16 which is arranged facing the core 12 interposing a magnetic air gap 20, and a movable magnet body 22 which is arranged in the magnetic air gap 20 and capable of displacement in the axial direction. The movable magnet body 22 consists of permanent magnets 24, 26 divided into a plurality of segments and insulating thin plates 28 arranged between the divided magnets.
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