| 摘要 |
An electromotive transmission structure of a blind comprises a box body and a base. A control unit is installed on the base; and a motor serves for driving an output shaft. A winding wheel is driven by the output shaft. A transmission belt is wound around a wheel shaft of the winding wheel for controlling the blind. A rolling shaft is installed at a lateral side of the winding wheel and a weight is suspended from the winding wheel through a rope. The rope is wound around the rolling shaft and the winding direction of the rope being reverse to that of the transmission belt around the wheel shaft of the winding wheel; the weight passing through the via hole of the box body. When the blind is at a full open or a full closing position, the control unit will stop the motor.
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