| 摘要 |
PURPOSE:To reduce a coil and the entire stationary armature in size by forming the armature of a coil wound on a core disposed axially, and two poles magnetically coupled with the ends of the core. CONSTITUTION:In a inner rotor type DC brushless motor, stationary armatures 1 of the number of the magnification of an integer number of phases are provided. The armatures 1 are formed by winding an armature coil 1b on a core 1d disposed along the axial direction of a rotor 2. A stationary pole 1a having an opposed surface 11a to the rotor 2 is magnetically coupled with one open end side of the core 1d, and a stationary pole 1b having similarly an opposed surface 11b is magnetically coupled with the other open end side. Thus, since the sectional area of the core 1d can be designed without respect to the pole area, the entirety can be reduced in size. |
