Patent attributes
A driving assembly for window blinds includes a mounting plate, a winding roller and driving wheels that are engaged with one another, at least one first guiding roller, and at least one second guiding roller. An elastic element is elastically wound around the driving wheels, a pull rope has a starting end fixed to the winding roller and is divided into at least two sections, under a first status, the pull rope partially winds around the winding roller then winds around the second guiding roller and the first guiding roller in turns along outer edges of the second and the first guiding rollers; while under a second status, the pull rope disengages from the winding roller, the second guiding roller and the first guiding roller in turns. The driving assembly has simple structure and convenient assembly, and brings effortless and quick operation to pull or lift the window blind.
