Patent ID: 6910515

Claim:
An electricity-operated window blind comprising: a headrail; a driving mechanism mounted inside said headrail and having a power input device for rotating upon receipt of power supply, and a power output device for rotating with said power input device; a blind body suspended below said headrail and coupled to said power output device and controlled by said power output device to change window shading status; a control mechanism having a suspension rod downwardly suspended from said headrail by a first end thereof, and a controller installed in a second end of said suspension rod, said controller having a battery set electrically coupled to said power input device for providing the necessary working power to said power input device; and wherein said power input device comprises a motor and a coupling device, the coupling device of said power input device having connecting means, and first electric interfacing means installed in said connecting means for receiving external electricity and transferring received external electricity to said motor; said suspension rod comprises coupling means detachably coupled to the connecting means of the coupling device of said power input device, and second electric interfacing means located on the coupling means of said suspension rod and electrically connected to said battery set of said controller and adapted to match said first electric interfacing means for transmission of electricity from said battery set to said motor upon connection of said suspension rod to the coupling device of said power input device.