| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor which generates no cogging but a large torque and can be made in a thinned structure, and a disk device using the motor. SOLUTION: The motor has a coil sheet 4 composed of a foil coil 9 wrapped with a flexible insulation material, a magnet 6 formed cylindrically and magnetized in plurality of polarities, and an inner magnet 20 formed cylindrically with a small diameter and magnetized in a plurality of polarities. The motor disposes the magnet 6 and the inner magnet 20 in a concentric circle keeping a predetermined gap each other, and disposes the coil sheet 4 between the gaps. |
