A drapery system that operates by rotating a rod having one, or a pair of left hand twist helical grooves, and one or a pair of right hand twist helical grooves, where the left hand twist and right hand twist helical grooves cross one another in equal spaced alignment across the length of the rotating rod. A plurality of idler rings and at least one driver ring are positioned around the drapery rod. The idler rings have a smooth interior surface whereas the driver rings include at least one tooth that engages a helical groove of the rotating rod. As the rotating rod is rotated, the driver ring is driven across the length of the rotating rod, thereby opening and closing the system. The system also includes a mounting bracket allows for extending the drapery past the inward edge of the inward most ring.

A drapery system that operates by rotating a rod having one, or a pair of left hand twist helical grooves, and one or a pair of right hand twist helical grooves, where the left hand twist and right hand twist helical grooves cross one another in equal spaced alignment across the length of the rotating rod. A plurality of idler rings and at least one driver ring are positioned around the drapery rod. The idler rings have a smooth interior surface whereas the driver rings include at least one tooth that engages a helical groove of the rotating rod. As the rotating rod is rotated, the driver ring is driven across the length of the rotating rod, thereby opening and closing the system. The system also includes a mounting bracket allows for extending the drapery past the inward edge of the inward most ring.

A solar shading device includes a head rail that slidably supports leading runners having fabric curtains attached thereto, a carrying mechanism that includes a carrying pulley coupled to the leading runners through a belt and carries the leading runners along the head rail on the basis of the rotation of the carrying pulley, a manual drive unit that includes a first shaft coupled to the carrying pulley and serving as a drive shaft, and a suspension part having the manual drive unit suspended therefrom with the carrying pulley and the first shaft coupled together. Further, with the manual drive unit detached from the suspension part, the suspension part allows an electric drive unit to be suspended therefrom with the carrying pulley and a second shaft coupled together, the electric drive unit including the second shaft as a drive shaft for driving the carrying pulley.

A solar shading device includes a head rail that slidably supports leading runners having fabric curtains attached thereto, a carrying mechanism that includes a carrying pulley coupled to the leading runners through a belt and carries the leading runners along the head rail on the basis of the rotation of the carrying pulley, a manual drive unit that includes a first shaft coupled to the carrying pulley and serving as a drive shaft, and a suspension part having the manual drive unit suspended therefrom with the carrying pulley and the first shaft coupled together. Further, with the manual drive unit detached from the suspension part, the suspension part allows an electric drive unit to be suspended therefrom with the carrying pulley and a second shaft coupled together, the electric drive unit including the second shaft as a drive shaft for driving the carrying pulley.

A device that includes a drive roller, in which the cord for the manual control of a mechanism for opening and closing a curtain or blind is partially wound to allow that said mechanism of curtain or blinds can be automated while maintaining the manual control at the same time.

A device that includes a drive roller, in which the cord for the manual control of a mechanism for opening and closing a curtain or blind is partially wound to allow that said mechanism of curtain or blinds can be automated while maintaining the manual control at the same time.

An opening and closing device for a curtain mounted on a guiding part, the guiding part is provided with the curtain; the opening and closing device is used for driving automatic opening and closing of the curtain; the opening and closing device includes a mainframe and a connecting mechanism. The mainframe includes a shell, a driver and a driving wheel; the driving wheel and the driver are mounted in the shell, the driver drive the driving wheel to rotate. The connecting mechanism includes a hanging piece and a bracket; a first end of the bracket is inserted into the shell, the hanging piece is movably connected with a second end of the bracket and hung on the guiding part; the hanging piece can be moved vertically relative to the bracket so that the driving wheel is attached closely to the outer wall of the guiding part.

An opening and closing device for a curtain mounted on a guiding part, the guiding part is provided with the curtain; the opening and closing device is used for driving automatic opening and closing of the curtain; the opening and closing device includes a mainframe and a connecting mechanism. The mainframe includes a shell, a driver and a driving wheel; the driving wheel and the driver are mounted in the shell, the driver drive the driving wheel to rotate. The connecting mechanism includes a hanging piece and a bracket; a first end of the bracket is inserted into the shell, the hanging piece is movably connected with a second end of the bracket and hung on the guiding part; the hanging piece can be moved vertically relative to the bracket so that the driving wheel is attached closely to the outer wall of the guiding part.

An opening and closing device for curtains and a system based on the same, mounted on a curtain track, comprises a main engine and a roller mechanism, The main engine comprises a shell with a cavity, a driving wheel mounted in the cavity and partially exposed the shell, a motor arranged in the cavity and controlling the driving wheel to rotate, a controller lied in the cavity and controlling the motor to start and stop, and a signal transceiver module coupled electrically with the controller and receiving starting and stopping signals of the motor; the driving wheel is used for driving the curtains to move along the curtain track; a roller mechanism is mounted on the shell, an end, far away from the shell, of the roller mechanism is hung on the curtain track and presses the driving wheel closely on the curtain track.

The limit switch uses a rolling sprocket mounted on an offset pivot point mounted in a housing in combination with inserts into individual links of the chain. The sprocket engages the chain using spring tension on the pivot point and rolls along the chain as the chain moves with the teeth of the sprocket inserting into the chain link spaces. An insert is attached in a chain link and positioned such that when the curtain reaches the desired terminal position, the inserts are at the point where the sprocket contact the insert. The insert blocks the cog of the sprocket which pushes the sprocket away from the chain and inwardly into the interior of the housing. Inside the housing the limit switch that is activated—either by contact or other means. The activation of the kill switch stops the motor and thus the movement of the curtains.