| 摘要 |
PURPOSE:To enable miniaturization without damaging characteristics by arranging a stator coil at the emptied place of a device, on which a rotary magnetic head is loaded, and forming a magnetic path from a stator core section, on which the coil is wound, to a stator core section oppositely faced to a rotor magnet. CONSTITUTION:A rotor magnet 5 is bonded and mounted on a rotor yoke 6, a stator core 1 is divided into two of 1a, 1b, and the stator core 1a is positioned at a section oppositely faced to the pole face of the rotor magnet 5 and a stator coil 4 is wound on the stator core 1b and the stator core 1b is divided into a section, on which the stator coil 4 is wound, and a section magnetically connected to 1a. The position of the stator coil 4 is installed on the side outer than the rotor magnet 5 while the shape of a magnetic path for introducing a magnetic field generated by the rotor magnet 5 to the stator coil 4 is changed. Accordingly, the place of the stator coil 4 can be arranged freely while a wire diameter and the number of turns can be set freely, thus allowing miniaturization without damaging characteristics even when the diameter of a rotary section is reduced. |
