| 摘要 |
The present invention discloses a window covering driving device that comprises a motor and a control circuit; the control circuit is provided with a microprocessor, a control wire, a control signal input terminal, and a switching circuit; the motor is connected to a drive power supply via the switching circuit; the switching circuit is connected to the microprocessor; the control signal input terminal is connected to the microprocessor via the control wire; wherein, it also comprises a safety position limiting wire; one end of the safety position limiting wire is connected to the microprocessor, and the other end is connected to a safety position limiting signal control terminal. For the safety position limiting wire and safety position limiting signal control terminal are attached in the present invention, when the safety position limiting signal control terminal is at the position limiting state, as the motor runs to the position limiting position, it will automatically stop; so, in the situations of the occurring of incorrect manipulations, the running stroke of the motor can be limited to ensure that the window covering can only rise or fall to a certain position, so as to avoid the window covering to block the view of the operator, which will to the occurring of safety accidents.
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