Abstract: 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.

Abstract: A winding mechanism adapted for window blinds includes a shaft and at least one spiral groove configured on the shaft. The shaft has a wider first end and a narrower second end, and a diameter of the shaft is gradually reduced from the wider first end to the narrower second end, one end of a pull rope is connected with the shaft, and the other end of the pull rope is connected with slats, the pull rope in turn winds around the spiral groove from the wider first end to the narrower second end, or in turn disengages from the spiral groove from the narrower second end to the wider first end. The force moment of the pull rope is varied with the diameter of the shaft, thereby an effortless and quick operation to pull or lift the window blind is obtained, and no rebound or no falling problem happens.

Abstract: A driving assembly for window blinds includes a mounting plate, a driving wheel and a spring leaf wheel that are rotationally mounted on the mounting plate. The driving wheel is connected with a drive rod of a winding mechanism of a window blind, a spring leaf is arranged between the driving wheel and the spring leaf wheel, one end of the spring leaf is connected with the driving wheel, another end of the spring leaf is connected with the spring leaf wheel, and the driving wheel is driven by the drive rod to cause the spring leaf to tighten or relax thereby winding around the driving wheel or the spring leaf wheel. The driving assembly has simple structure and convenient assembly, and reliably provides a power for driving the winding wheels and the pull rope.

Abstract: 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.

Abstract: A winding mechanism adapted for window blinds includes a shaft and at least one spiral groove configured on the shaft. The shaft has a wider first end and a narrower second end, and a diameter of the shaft is gradually reduced from the wider first end to the narrower second end, one end of a pull rope is connected with the shaft, and the other end of the pull rope is connected with slats, the pull rope in turn winds around the spiral groove from the wider first end to the narrower second end, or in turn disengages from the spiral groove from the narrower second end to the wider first end. The force moment of the pull rope is varied with the diameter of the shaft, thereby an effortless and quick operation to pull or lift the window blind is obtained, and no rebound or no falling problem happens.

Abstract: The present invention discloses a new-type draw cord curtain structure, including an upper track. A side of a lower end of the upper track is mounted with a moveable curtain body. An upper end of the moveable curtain body is connected with the upper track. The upper track is mounted with a moveable draw cord. One end of the moveable draw cord is connected with the moveable curtain body and the other end of the moveable draw cord droops to the side of the lower end of the upper track across the upper track. The upper track is mounted with a plurality of extension tubes corresponding to the moveable draw cord. Extension tube through holes which are perforated completely from the top down are provided on the cores of the plurality of extension tubes. Upper ends of the plurality of extension tubes are mounted to the upper track.