| 摘要 |
A rotatable device for a protective net of an electric fan including a vertical base, a synchronous motor fixed on a rear surface of the base, a gear fixed on the shaft of the motor, a first sleeve supported on the shaft of the motor of an electric fan and fitting through a center hole of the base to fit around a rear small diameter shaft hole of a rotatable sleeve and then to engage a rotatable sleeve locking nut fitted in a front large diameter shaft hole of the rotatable sleeve, a net locking nut engaging a male threaded portion of the rotatable sleeve to secure the net ring of the protective net of an electric fan with the rotatable sleeve having a gear portion to engage the gear so that the protective net may be rotated by the rotatable sleeve.
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