| 摘要 |
PURPOSE:To reduce the size of a fan motor by rationally containing a stator armature made by mounting yokes at both upper and lower ends of an armature winding 17. CONSTITUTION:Lower yokes 19 are secured to the lower end of an armature winding 17 and four lower corners of a casing. Accordingly, the side of the upper yoke 18 is opposed to the upper side end of a rotor magnet 15, and the upper end of the bent 19b of the yoke 19 is opposed to the lower end of the magnet 15. Thus, the magnetic force passes the N-pole, S-pole of the magnet 15, the lower yoke 19, the core 16 and the upper yoke 18, and since a revolving magnetic field of the prescribed direction is generated when an armature winding 4 is energized, a rotor 9 is rotated in the prescribed direction. |
