A covering for an architectural opening may include a shade movable between extended and retracted positions, and a wand having a rod with a top end and a bottom end. The top end of the wand may be operatively coupled to the shade via an operating cord and movable to actuate the operating cord to move the shade between the extended and retracted positions. A handle may be coupled to the bottom end of the rod.

A vertical blind structure has: an upper track, at least one track set and a plurality of blades. The upper track with an adjustable length has an inner track and an outer track, and the inner track and the outer track are disposed on a same side and connected to each other with a connecting track. The inner and outer tracks of the upper track respectively have an engaging portion and further have a plurality of clamping members. The at least one track set has a plurality of sliding tracks parallel with each other, and each sliding track has a positioning groove and a corresponding limiting groove at two opposite sides and a storing groove at a bottom side. An end of each positioning groove of the sliding track comprises a sliding block.

A vertical blind structure has: an upper track, at least one track set and a plurality of blades. The upper track with an adjustable length has an inner track and an outer track, and the inner track and the outer track are disposed on a same side and connected to each other with a connecting track. The inner and outer tracks of the upper track respectively have an engaging portion and further have a plurality of clamping members. The at least one track set has a plurality of sliding tracks parallel with each other, and each sliding track has a positioning groove and a corresponding limiting groove at two opposite sides and a storing groove at a bottom side. An end of each positioning groove of the sliding track comprises a sliding block.

A handle assembly for an architectural covering is provided. The covering may include a shade member, a movable rail attached to the shade member, and a handle secured to the movable rail. The handle may be secured to the rail in a manner that results in a smooth, relatively uninterrupted appearance.

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 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.

The invention refers to a pull cord arrangement for a roller blind or a venetian blind, comprising a winding element (4) arranged to be connected to a blind (6) such that the blind (6) is released or wound in response to a rotational movement of the winding element (4) about a rotational axis; a connecting element (28) coupled to the winding element (4) to rotate together with the winding element (4); and a pull cord (50) engaging the connecting element (28) so as to control the rotation of the connecting element (28) and thus the winding element (4) as the pull cord (50) is operated.

The invention refers to a pull cord arrangement for a roller blind or a venetian blind, comprising a winding element (4) arranged to be connected to a blind (6) such that the blind (6) is released or wound in response to a rotational movement of the winding element (4) about a rotational axis; a connecting element (28) coupled to the winding element (4) to rotate together with the winding element (4); and a pull cord (50) engaging the connecting element (28) so as to control the rotation of the connecting element (28) and thus the winding element (4) as the pull cord (50) is operated.

A manual drive assembly for a manually-operated window treatment based on a drive chain formed as a loop, may incorporate one or more intermediate tensioners disposed between two ends of the loop. The loop may be formed between a manual clutch mechanism coupled to the window treatment and an end tensioner. The one or more intermediate tensioners may serve to limit slack in the loop such that sides of the loop cannot be pulled to create a large loop, for example, having a gap of four inches or greater, between the hanging sides of the cord.

A pull cord equalizer buckle for window blind is disclosed to include two equalizer buckle members abutted against each other. Each equalizer buckle member includes a cord-escape hole and a cord-retaining slot at a bottom side relative to the cord-escape hole. Two pull cords are respectively inserted through the cord-escape holes of the two equalizer buckle members and retained by one respective cord-retaining slot. If the two pull cords are forced outwards by an external object, the pull cords will give an outward pressure to the close ends of the respective cord-escape holes, and these two equalizer buckle members will be forced apart and released from the pull cords if the pressure imparted by the pull cords is larger than the binding force between the two equalizer buckle members, ensuring application safety.