A window covering system comprises a headrail, a bottom rail, a covering material, a control unit, and a first rotating unit, wherein the first rotating unit is configured to be driven to rotate in a first direction when the bottom rail descends to expand the covering material; and a locking device coiled to the first rotating unit, wherein the locking device provides a restriction force to the first rotating unit to restrict the first rotating unit from rotating in the first direction, as well as to restrict the bottom rail from descending; and an actuating device configured to operate with the control unit simultaneously; when the control unit drives the actuating device to push the locking device in order to reduce the restriction force provided by the locking device to the first rotating unit, the bottom rail descends to drive the first rotating unit to rotate in the first direction.

A securing device for a window shade includes a securing member connected to the bottom bar of the window shade, and the securing member has a first end and a second end. The first end of the securing member faces the bottom bar, and the second end of the securing member faces a direction away from the bottom bar. The second end has at least one securing slot defined axially therein. The width of the at least one securing slot is gradually narrowed from the second end toward the first end of the securing member. The narrowest end of the at least one securing slot is a clamping notch which is used to clamp the wire of the window shade.

A motorized window covering assembly including a head rail, a bottom rail, and a window covering extending therebetween. Located at the head rail is a power storage device, while an electronic port (e.g., transferring power and/or data) is located at the opposite bottom rail. Electrical conductors are routed through the window covering electrically connecting the power storage device to the electronic port. The power storage device is chargeable at any position of the bottom rail relative to the head rail.

A modular shade includes at least one module that consists of a head rail unit, a foot rail unit, at least one intermediate rail unit, and a plurality of slat components. A top slat may be coupled to the head rail unit and the intermediate rail unit, and a bottom slat component may be coupled to the intermediate rail unit and the foot rail unit. Further, additional intermediate rail units and intermediate slat components may be added to the module to alter the shape and size of the module, and the module may be coupled to one or more additional modules to change the overall shape and size of the modular shade.

A modular shade includes at least one module that consists of a head rail unit, a foot rail unit, at least one intermediate rail unit, and a plurality of slat components. A top slat may be coupled to the head rail unit and the intermediate rail unit, and a bottom slat component may be coupled to the intermediate rail unit and the foot rail unit. Further, additional intermediate rail units and intermediate slat components may be added to the module to alter the shape and size of the module, and the module may be coupled to one or more additional modules to change the overall shape and size of the modular shade.

A driving device for a window blind includes a rotary unit and a driving unit . The rotary unit includes a rotary shaft and a screw nut. The rotary shaft is mounted in a receiving space of a lower rail, is rotatable relative to the lower rail about an extending axis thereof, and is configured to permit pull cords to be wound thereon, such that rotation of the rotary shaft drives the lower rail to move relative to an upper rail. The screw nut engages a threaded section of the rotary shaft and is fixedly connected to the lower rail, such that the rotary shaft moves along the extending axis relative to the lower rail upon the rotation thereof relative to the lower rail. The driving unit is linked to the rotary shaft for driving the rotation of the rotary shaft.

A displacement controlling device comprises a shaft having a displacement region, a movable unit connected to the shaft and configured to move within the displacement region, a damper connected to one end of the shaft, and a restraint unit arranged between the movable unit and the damper, wherein the restraint unit is configured to be driven by the movable unit from a first position toward a second position; the damper outputs a resistance when the restraint unit is at the first position, and the damper stops outputting the resistance if the restraint unit is at the second position.

An end cap for use on a rail for a covering for an architectural opening. At least one securement leg secures the end cap to the rail.

An end cap for use on a rail for a covering for an architectural opening. At least one securement leg secures the end cap to the rail.

A modular shade includes at least one module that consists of a head rail unit, a foot rail unit, at least one intermediate rail unit, and a plurality of slat components. A top slat may be coupled to the head rail unit and the intermediate rail unit, and a bottom slat component may be coupled to the intermediate rail unit and the foot rail unit. Further, additional intermediate rail units and intermediate slat components may be added to the module to alter the shape and size of the module, and the module may be coupled to one or more additional modules to change the overall shape and size of the modular shade.