The invention relates to window coverings modification kit and is more specifically related to cordless blinds for covering window openings modification kit and, more particularly to cordless window coverings modification kit for tall windows.

A window shade includes a first base, a second base, honeycomb fabric clamped between the first and second bases, a motor provided on the second base, a winder connected to an output end of the motor, a cord, a battery holder, and a power supply battery and electrically connected to the motor, where the cord has one end connected to an output end of the winder and the other end connected to the first base; the second base is provided with a mounting chamber and a charging connector; the mounting chamber has a first sidewall provided with a first clamping strip and a second clamping strip and a second sidewall provided with a third clamping strip and a fourth clamping strip; and the battery holder has one side clamped between the first and second clamping strips and the other side clamped between the third and fourth clamping strips.

A window shade includes a first base, a second base, honeycomb fabric clamped between the first and second bases, a motor provided on the second base, a winder connected to an output end of the motor, a cord, a battery holder, and a power supply battery and electrically connected to the motor, where the cord has one end connected to an output end of the winder and the other end connected to the first base; the second base is provided with a mounting chamber and a charging connector; the mounting chamber has a first sidewall provided with a first clamping strip and a second clamping strip and a second sidewall provided with a third clamping strip and a fourth clamping strip; and the battery holder has one side clamped between the first and second clamping strips and the other side clamped between the third and fourth clamping strips.

A roman shade includes a rolling assembly, two brackets, a beam, a fabric, and a roller shade; both ends of the rolling assembly are respectively supported by the two brackets and the two brackets are disposed on the beam. The beam includes a side wall connected to the fabric. The roller shade is attached to the back of the fabric. The roller shade includes a top portion secured to the rolling assembly. The rolling assembly includes a housing, a shaft, an end connector, a sealed fixing element, a spring, and a fixed part. The shaft is disposed in the housing. The housing includes an inner wall including a plurality of ribs disposed at intervals. The shaft includes a first end and a second end. The first end is rotatably disposed through the end connector and secured to one of the two brackets.

A control rope guide device for a window curtain assembly includes a bottom part and a top part. The top part is connected to the top of the bottom part. The control rope guide device is cooperated with the window curtain assembly to separate two control ropes apart from each other so as to smoothly expand or lift the curtain.

A window blind includes a headrail, two lift cords, a blind body, a bottom rail, and two cord winding assemblies that are respectively installed on two opposite sides of the long axis of the bottom rail. The other ends of the lift cords are respectively tied to respective adjustment columns of the cord winding assemblies. When the window blind is folded or stretched, unfortunately, when the winding stroke is inconsistent, the blind body is not folded uniformly or skewed, and the adjustment column of the cord winding assembly on one side can be finely adjusted, so that one of the lift cords is gradually wound and covered on the adjustment column, and indirectly drives the bottom rail and the blind body to gradually adjust to substantially parallel to the bottom of the headrail, thereby effectively achieving the effect of fine-tuning and correcting the blind body.

A window blind includes a headrail, two lift cords, a blind body, a bottom rail, and two cord winding assemblies that are respectively installed on two opposite sides of the long axis of the bottom rail. The other ends of the lift cords are respectively tied to respective adjustment columns of the cord winding assemblies. When the window blind is folded or stretched, unfortunately, when the winding stroke is inconsistent, the blind body is not folded uniformly or skewed, and the adjustment column of the cord winding assembly on one side can be finely adjusted, so that one of the lift cords is gradually wound and covered on the adjustment column, and indirectly drives the bottom rail and the blind body to gradually adjust to substantially parallel to the bottom of the headrail, thereby effectively achieving the effect of fine-tuning and correcting the blind body.

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 control device for coupling with a shaft of a window blind and controlling rotation of the shaft includes first and second ratchet seats, a spool assembly operable to rotate in unwinding and winding directions, a tubular case, an output unit coupled with the shaft, and a transmission unit operable to be shifted between a transmitting state to have a torque transmitted to the output unit, and a non-transmitting state to interrupt the torque transmission. Each ratchet seat has a surrounding groove and teeth. Balls are rollably engaged in the surrounding groove and the spool assembly for permitting rotation of the first ratchet seat with the spool assembly in the unwinding direction, and not to rotate the first ratchet seat in the winding direction.

A motorized window treatment system may include a roller tube, a flexible material, a motor drive unit, and mounting brackets. The mounting brackets may include a stationary portion configured to be attached to a structure surrounding a window. The mounting brackets may include a movable portion configured to receive an end portion of a housing of a motor drive unit. The movable portion may be configured to operate the motorized window treatment between the operating position and the extended position in a circular-shaped path. A portion of the motor drive unit may be accessible when the motorized window treatment is in the extended position. The mounting brackets may include a stopping mechanism that is configured to prevent the motorized window treatment from extending beyond the extended position.