Driving assembly and window blind

A driving assembly, adapted for window blinds, the driving assembly comprising a mounting plate, a winding roller and at least one pair of driving wheels that are engaged with one another and rotationally mounted on the mounting plate, at least one first guiding roller located at a side of the at least one pair of driving wheels, and at least one second guiding roller located at a side of the winding roller,

• wherein an elastic element is elastically wound around the driving wheels to provide driving force for the winding roller, a pull rope has a starting end fixed to the winding roller and is divided into at least two pull rope sections at a predetermined position, and the pull rope sections are adapted for running through multiple slats of the window blinds and connected with a bottom rail of the window blinds, 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 guiding roller and the first guiding roller;
• while under a second status, the pull rope disengages from the winding roller, the second guiding roller and the first guiding roller in turns.