Patent ID: 8490445
Filing Date: 2013-07-23
Classification: E05B,Y10T

Abstract:
1. An electric door lock comprising: a drive unit having a motor; a first driven wheel connected drivenly to said drive unit, and having opposite first and second faces, a central hole extending through said first and second faces, and two angularly spaced apart abutment faces formed on said first face at positions that are spaced radially from said central hole; a spring attached to said first face of said first driven wheel and having two angularly spaced apart driving elements respectively abutting against said abutment faces by a biasing force of said spring, said driving elements being rotatable along with said first driven wheel; a latch unit; an operating unit to operate said latch unit and having a rotary handle; and a second driven wheel connected drivenly to said operating unit, said second driven wheel having a driven element extending to said first face of said first driven wheel and disposed between said driving elements so as to be pushed by one of said driving elements; said second driven wheel being rotatable between a first position that places said latch unit in an unlatching position and a second position that places said latch unit in a latching position; wherein, when said drive unit drives said first driven wheel, one of said driving elements pushes said driven element to rotate said second driven wheel from said first position to said second position and the other one of said driving elements pushes said driven element to rotate said second driven wheel from said second position to said first position.