| 摘要 |
PURPOSE:To reducd the diameters of a magnet and a rotor yoke and to reduce the size of a brushless motor by disposing a mgnetic detector under a drive coil. CONSTITUTION:A magnetic detector 10 is disposed under a drive coil 4. A stator yoke 3 is embossed and opened with a hole, thereby locally forming a recess 11. An insulating layer 9 and a wiring pattern 8 are formed on the yoke 3, and the detector 10 is secured to the recess 11. Further, a magnet 2 is formed in the same diameter as the coil 4, and a rotor yoke 1 is reduced in coincidence with the coil. |
