| 摘要 |
PROBLEM TO BE SOLVED: To provide a brushless motor capable of rotation by stabilizing a disc. SOLUTION: This brushless motor 100 comprises an electromagnetic coil 103 for generating a prescribed field peripherally by passing a current; a support 101 for maintaining the electromagnetic coil 103 on a substrate 106; a permanent magnet 104 for generating a magnetic interaction with the filed at which the electromagnetic coil 103 generates; and a rotor 105 of which the top is a closed cylindrical shape and is formed with a turn table 107, in which the permanent magnet 104 is provided at a prescribed position of an internal surface in a cylindrical portion, and which rotates through a bearing 102 mounted on the substrate 106 by the magnetic interaction generated between the electromagnetic coil 103 and the permanent magnet 104. Because the rotor itself functions as a conventional shaft, the shaft diameter of the motor increases, and the inclination rigidity of the shaft increases, thus giving stable rotation to the disc. COPYRIGHT: (C)2004,JPO&NCIPI |
