Curtain blind winding mechanism

Abstract

A curtain blind winding mechanism, applicable for use in a horizontal curtain blind that uses cords to operate horizontal roll-up and roll-down of the slats, including curtain blinds such as pleated blinds, roman blinds, cellular blinds, and so on. The present invention primarily uses a restoring drive device to act on a horizontally displaceable rolling tube, and further uses the dead weight of the slats to counteract the drive mechanism restoring force. The present invention enables single-handed operation to open up the slats by lifting a bottom edge of the slats or pulling down on the bottom edge to close the slats. Furthermore, the bottom edge of the slats can be effectively fixed at any height position.

1 . A curtain blind winding mechanism, applicable for use in a horizontal curtain blind that uses cords to operate horizontal roll-up and roll-down of slats, including curtain blinds such as pleated blinds, roman blinds, cellular blinds, and so on; and comprises a top rail, two ends of which are configured with a left stop end member and a right stop end member respectively, through holes are defined in a lower portion of the top rail to provide cords to penetrate therethrough, top ends of the cords are joined to a rolling tube, and lower portions of the cords penetrate and join together slats, bottom ends of the cords are connected to a horizontal bottom rail; the curtain blind winding mechanism is characterized in that one end of the rolling tube is restrained by a coaxially configured displacement device, thereby causing transversal displacement of the rolling tube, and the entire rolling tube is subjected to a reverse rotational force from a coaxial disposed drive device, an outer circumferential surface of the rolling tube is movable disposed on a slide-shear portion to support the rolling tube thereon.  
     
     
         2 . The curtain blind winding mechanism as described in  claim 1 , wherein the drive device is a helical spring, one end of which is fixed to a stop end member, and another end is joined to an interior of the rolling tube.  
     
     
         3 . The curtain blind winding mechanism as described in  claim 1 , wherein the drive device drives the rolling tube by an electric motor.  
     
     
         4 . The curtain blind winding mechanism as described in  claim 1 , wherein the displacement device comprises a threaded rod, one end of which is fixed to the right stop end member, and a working end is coaxially rotate connected to a screw hole defined in a rotate connecting end of the rolling tube.  
     
     
         5 . The curtain blind winding mechanism as described in  claim 1 , wherein the displacement device comprises an interior teeth tube coaxially fixed to the right stop end member, and which rotate connect with exterior screw teeth configured on a corresponding end of the rolling tube.  
     
     
         6 . The curtain blind winding mechanism as described in  claim 1 , wherein the rolling tube provides for a plurality of the cords to be wound thereon, and astriding support devices are configured on a girth position of the rolling tube.  
     
     
         7 . A curtain blind winding mechanism, applicable for use in a horizontal roll-up and roll-down curtain blind such as a pleated blind, a roman blind, a cellular blind, and so on, comprising a top rail, two ends of which are respectively configured with stop end members, through holes are defined in a lower portion of the top rail to provide cords to penetrate therethrough, top ends of the cords are joined to a rolling tube, and lower portions of the cords penetrate and join together slats, bottom ends of the cords are connected to a horizontal bottom rail, the curtain blind winding mechanism is characterized in that one end of the rolling tube is penetrated by a coaxially configured smooth shaft, exterior screw teeth are configured on a left end outer circumference of the rolling tube, and the exterior screw teeth rotate connect to interior screw teeth configured on a slide-shear portion, a coaxially configured drive device reverse rotates the rolling tube.  
     
     
         8 . The curtain blind winding mechanism as described in  claim 7 , wherein the drive device is a helical spring, one end of which is fixed to the left stop end member, and another end is joined to an interior of the rolling tube.  
     
     
         9 . The curtain blind winding mechanism as described in  claim 7 , wherein the drive device drives the rolling tube by an electric motor.  
     
     
         10 . The curtain blind winding mechanism as described in  claim 7 , wherein the displacement device comprises a motor driving an angular-shaped transmission shaft, which functions in conjunction with an angular-shaped slide-shear hole defined in an end of the rolling tube opposite to that of the angular-shaped transmission shaft.  
     
     
         11 . The curtain blind winding mechanism as described in  claim 7 , wherein the rolling tube provides for a plurality of the cords to be wound thereon, and astriding support devices are configured on a girth position of the rolling tube.  
     
     
         12 . The curtain blind winding mechanism as described in  claim 1 , wherein the horizontal bottom rail joined to a bottom end of the slats has sufficient weight to balance a counterforce of the drive device.  
     
     
         13 . The curtain blind winding mechanism as described in  claim 7 , wherein the horizontal bottom rail joined to a bottom end of the slats has sufficient weight to balance a counterforce of the drive device.