| 摘要 |
PURPOSE: A rotor assembling method for a disc type brushless direct current motor is provided to assemble a rotating disc with ease. CONSTITUTION: In a rotor assembling method for a disc type brushless direct current motor, a stator includes a fixed disc having a plurality of coils is coupled to a motor case at regular intervals. A rotator includes a rotating disc having a plurality of permanent magnets opposite the coils, is inserted alternately in the intervals of the fixed disc. While a diameter of a rotating axis shrank in a cold process at a very low temperature, an inside diameter of the rotating disc without the permanent magnets is expanded in a hot process at least over 100°C. Next, the rotating axis is press-fixed to the rotating disc. The permanent magnets are inserted and fixed in an inserting hole installed on a concentric circle of the rotating disc at regular intervals.
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