| 摘要 |
PURPOSE: A brushless DC motor is provided to maximize an effective magnetic flux amount facing to a winding coil of a stator and minimize a magnetic flux amount facing to a iron pipe of a rotor assembly, thereby improving the performance of the motor by increasing the output of the motor according to magnet arrangements. CONSTITUTION: A brushless DC(BLDC) motor comprises a stator and a rotor. A permanent magnet(102) is arranged in a ring shaped rotor assembly(101). The permanent magnets are perpendicular to each other. The permanent magnet facing the stator(200) has a maximum N polarity. The permanent magnet facing the rotor assembly has a minimum N polarity. A winding coil(201) is equipped in the stator.
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