| 摘要 |
PURPOSE:To fix a magnet to a shaft correctly and surely, by a method wherein a screw for fixing is formed by a screw, having the same specification as a lead screw formed on the shaft, and is buried by resin when the magnet is fixed to the shaft through the resin. CONSTITUTION:A motor is constituted of a core 1, around which a coil 2 is wound, a frame 3, covering the core, and brackets 4, 5, provided at both ends of the frame. A shaft 9, forming a rotor 12, is supported by the brackets 4, 5 through bearings 6, 7 respectively while a screw 11 for fixing a magnet, having the same specification as a lead screw 10, and a lead screw 10 are formed on the shaft 9. The screw 11 for fixing the magnet is molded by resin 14 at the inside of an annular magnet 13. According to this method, the magnet 13 is integrated with the shaft 9 in a mold, therefore, said screw 11 may be covered by the resin 14, cured after the molding, and strong binding force between the shaft 9 and the magnet 13 may be developed.
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