| 摘要 |
PROBLEM TO BE SOLVED: To provide a coupling structure for the tray of a brushless DC motor, where at least one coupling projection is made at the top coupling face of a rotor shell and the coupling projection enables the manufacturer to couple a tray with the rotor shell and the coupling projection and adjusting space being made to correspond to it within itself enables the manufacturer to adjust the balance in rotation of the rotor shell, so which can relatively increase the convenience in setup, the freedom in balance adjustment, and the reliability on its placement without fail. SOLUTION: This coupling structure is composed of a fixed part, the rotor shell, and the tray. The rotor shell is provided with a spindle and the top coupling face. The rotor shell is coupled rotatably to the fixed part by the spindle. The tray can be coupled stably by at least one coupling projection being provided at the top coupling face. The adjusting space is made under the coupling projection of the rotor shell. The coupling projection and the adjusting space are used to adjust the balance in rotation of the rotor shell against the fixed part. COPYRIGHT: (C)2006,JPO&NCIPI
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