A non-return mechanism for a motor of an electric curtain is provided which comprises a motor and a gearbox that are successively connected; the output end of the gearbox is connected with a non-return component; the non-return component comprises a flange, an output shaft and a non-return block, the output end of the gearbox is provided with an output bracket; the output bracket is in unidirectional drive fit with one end of the output shaft toward the gearbox and they fit within the accommodating cavity; the output shaft and the non-return block, together with the unidirectional drive fit with the output bracket, a non-return force is effectively generated to steadily maintain the curtain at the required position when the motor stops without damaging the gearbox and the motor as the output shaft reversely drives the gearbox and the motor under the effect of an external force or gravity.

Provided is a telescopic rail, comprising a first rail and a second rail slidably arranged relative to each other, two rotating wheels, a belt, a first and a second traction block. When the rail is put into use, loosen the first and the second fixing device to release the belt from the first and the second traction block, then slide the first and the second rail relative to each other till the total length of the rails is qualified for the installation requirement, then tighten the first and the second fixing device to grip the belt by the first and the second traction block, after that cut off the surplus of belt, thus the length of the telescopic rail could be adjusted on-site without preparatory measurements and customizations, which decreases the workload for measurements and improves the efficiency for installation.

A motor driven system for raising and lowering a window covering executes motor ramp trajectory speed control. The motor ramp trajectory limits acceleration of an external motor from the idle (stationary) state to full operating speed, and limits deceleration of the motor from full operating speed back to the idle state. This function reduces stresses on a continuous cord loop drive mechanism. A control system manages solar heating effects in response to sunlight entrance conditions such as system sensor outputs, external weather forecasts, and other data sources. The system automatically opens or close the window covering to increase or decrease admitted sunlight under appropriate conditions. The input interface of the control system includes a visual display and input axis, which are aligned vertically if the window covering mechanism raises and lowers the window covering, and are aligned horizontally if the window covering mechanism laterally opens and closes the window covering.

A wand assembly for use with an architectural-structure covering is disclosed. The wand assembly may include a first operating element (e.g., an operating cord) for moving the covering between extended and retracted positions and a second operating element (e.g., a tilt wand) for adjusting rotation of the covering between open and closed configurations. The first and second operating elements are coupled to a handle assembly via separate and distinct coupling mechanisms so that manipulation of the second operating element does not affect the first operating element thereby preventing twisting of the first operating element about the second operating element. The wand assembly may include a first, inner rotatable wand and a second, stationary outer wand. The inner wand is rotatable relative to the outer wand so that rotation of the inner wand does not rotate the outer wand, and hence the first operating element coupled to the outer wand.

A curtain assembly includes a scrolling device having a first axle, a second axle and at least one third axle. A scrolling spring is a scroll-shaped unit and includes a first end and a second end. The second end of the scrolling spring is located close to the center of the roll-shaped unit. The first end is located at outside of roll-shaped unit. The recovery force of the first end of the scrolling spring is smaller than that of the second end of the scrolling spring. The first end of the scrolling spring is connected to a first wheel. The second end of the scrolling spring is connected to a second wheel. The scrolling spring is wrapped in an “S” pattern between the first and second heels. When the curtain is collected, it does not expand downward. When the curtain is expanded, it is not dragged upward.

A curtain assembly includes a scrolling device having a first axle, a second axle and at least one third axle. A scrolling spring is a scroll-shaped unit and includes a first end and a second end. The second end of the scrolling spring is located close to the center of the roll-shaped unit. The first end is located at outside of roll-shaped unit. The recovery force of the first end of the scrolling spring is smaller than that of the second end of the scrolling spring. The first end of the scrolling spring is connected to a first wheel. The second end of the scrolling spring is connected to a second wheel. The scrolling spring is wrapped in an “S” pattern between the first and second heels. When the curtain is collected, it does not expand downward. When the curtain is expanded, it is not dragged upward.

A motor driven system for raising and lowering a window covering executes motor ramp trajectory speed control. The motor ramp trajectory limits acceleration of an external motor from the idle (stationary) state to full operating speed, and limits deceleration of the motor from full operating speed back to the idle state. This function reduces stresses on a continuous cord loop drive mechanism. A control system manages solar heating effects in response to sunlight entrance conditions such as system sensor outputs, external weather forecasts, and other data sources. The system automatically opens or close the window covering to increase or decrease admitted sunlight under appropriate conditions. The input interface of the control system includes a visual display and input axis, which are aligned vertically if the window covering mechanism raises and lowers the window covering, and are aligned horizontally if the window covering mechanism laterally opens and closes the window covering.

A curtain remote controller and a method for setting remote control stroke thereof are provided, and the curtain remote controller controls the curtain driving motor through remote-control buttons; the managing buttons are used to set the upper and lower stroke interval of the curtain, so that the curtain moves within the interval and free adjustment of the stroke interval according to specific requirements is achieved. Meanwhile, the curtain remote controller adopts a conversion switch to form the remote control module and the setting module of the curtain remote controller, so that the function modules of the buttons are clearly divided to avoid situations such as the user is confused by too many buttons; it is convenient for users to identify each function module with a simple operation interface; the logical relationship of the curtain remote controller is simplified, and misoperation of the user is avoided.

A wand assembly for use with an architectural-structure covering is disclosed. The wand assembly may include a first operating element (e.g., an operating cord) for moving the covering between extended and retracted positions and a second operating element (e.g., a tilt wand) for adjusting rotation of the covering between open and closed configurations. The first and second operating elements are coupled to a handle assembly via separate and distinct coupling mechanisms so that manipulation of the second operating element does not affect the first operating element thereby preventing twisting of the first operating element about the second operating element. The wand assembly may include a first, inner rotatable wand and a second, stationary outer wand. The inner wand is rotatable relative to the outer wand so that rotation of the inner wand does not rotate the outer wand, and hence the first operating element coupled to the outer wand.