A control assembly for a roller blind, the assembly including a chain wheel adapted to be driven by an operating chain; a drive bush; and a locking pin, wherein at least one of the chain wheel and drive bush includes a coupling element which in use couples the chain wheel to the drive bush such that axial displacement of the drive bush results in a corresponding axial displacement of the chain wheel, but that relative rotational displacement between the chain wheel and the drive bush is permitted through an arc defined between a pair of opposed stops which are carried by the other of the chain wheel and the drive bush; and wherein the locking pin passes axially through the chain wheel and the drive bush, the locking pin including at one end thereof a pair of opposed legs and at least one leg includes a locking lug adapted to engage a stop surface of the drive bush.

A chain protection system for a chain driven blind assembly is provided. The chain protection system includes an elongate rod for supporting a blind, a drive means connected to the rod and configured to rotate the rod about a longitudinal axis to extend and retract the blind in use, a chain loop, an elongate body having a cavity configured to receive a portion of the chain loop, and a rotatable member mounted within the cavity of the body and configured to receive the chain loop of the blind assembly such that a predetermined length of the chain loop extends from the cavity of the body during operation of the chain driven blind assembly.

A roller shade assembly includes a roller tube, a first spring assembly and a second spring assembly received by the roller tube, the first spring assembly including a first shaft received by a first housing, a first spring member connected at one end to the first housing and at an opposite end to the first shaft, the second spring assembly including a second shaft received by a second housing, a second spring member connected at one end to the second housing and at an opposite end to the second shaft, and a connection assembly including a connector defining a shaft and a locking member, the first shaft is configured to engage the shaft defined by the connector, and the second housing is configured to engage the locking member defined by the connector to connect the first spring assembly and the second spring assembly in series.

A dual screen roll blind including two winding roll bodies which are roll-stored respectively so as enable light blocking or light shielding by adjusting vertical positions of two screens, including two selectively draw screens, to rapidly store an unrolled screen through automatic return and ensure child safe by a return spring and a limiter.

A magnetic child safety system for a mechanism of a chain-operated blind includes a safety device that can be coupled, via magnetic coupling means, preferably neodymium magnets, to a chain command device, wherein the magnetic coupling means are configured to decouple the safety device from the chain command device when a tension is applied to the chain loop in a vertical direction towards the ground, which is greater than or equal to a predetermined threshold fixed at 6 kg.

A screwless curtain control assembly is revealed. An assembly segment is disposed on one end of a bead chain base while first radial positioning parts and first axial positioning parts are arranged at the assembly segment alternately. A sleeve including second radial positioning parts and second axial positioning parts is mounted to the assembly segment of the bead chain base. Thereby the bead chain base and the sleeve are connected stably by the first radial positioning parts and the first axial positioning parts connected to and positioned by the second radial positioning parts and second axial positioning parts respectively. Thus both labor time for fastening screws and cost of the screws are saved. Therefore the screwless curtain control assembly meets the modern industry's requirement for high efficiency at low cost.

A safe curtain control assembly without screws is revealed. The safe curtain control assembly includes a stopping portion located on a wall of a cavity of a base and a raised-and-recessed structure is formed by the wall of the cavity and the stopping portion. A sleeve, an elastic member and a drive member are mounted within the cavity of the base in turn. A second stopping flange of the drive member is positioned in a recessed area between the wall of the cavity and the stopping portion for preventing the sleeve, the elastic member, and the drive member assembled from being released. Thereby the base, the sleeve, the elastic member and the drive member are secured firmly without screws so as to save time and cost for each assembly.

Methods and apparatus to control architectural opening covering assemblies are disclosed herein. An architectural covering assembly including an architectural covering; a tube to which the architectural covering is coupled; a manual controller operatively coupled to the tube to rotate the tube; a motor including a motor housing and a motor shaft; and a clutch assembly including a clutch and a clutch housing in which the clutch is disposed, the motor shaft coupled to the clutch and the clutch coupled to the manual controller to hold the motor shaft substantially stationary when the architectural covering is moved under an influence of the motor to cause the motor housing to rotate with the clutch housing and the tube.

A clutch cover for a roller blind clutch. The clutch cover comprises a clutch barrel portion mounted upon and extending outwardly from a first side of a backing plate, a cover ring and one or more indexing locators to fix the position of the cover ring relative to the backing plate when the cover ring is releasably secured about the backing plate. The cover ring includes a chain guide and is releasably securable about the backing plate such that the cover ring encompasses the backing plate. The indexing locators prevent relative rotational movement between the cover ring and the backing plate when the cover ring is releasably secured about the backing plate. The indexing locators permit the chain guide to be positioned at a plurality of angles relative to the backing plate.

An improved operating system for use in an architectural-structure covering for extending and retracting a covering portion is disclosed. The operating system including an operating element for raising the covering portion and for transitioning the operating system between a retraction mode to raise the covering and an extension mode to lower the covering. To transition between the retraction and extension modes, an operator may move the operating element in a preset direction, such as, in the manner akin to a switch. For example, moving the operating element in a first direction (e.g., a rearward direction away from the operator) shifts the operating system into the retraction mode, while moving the operating element in a second direction (e.g., a forward motion toward the operator) shifts the operating system into the extension mode. In one embodiment, the first and second directions may be transverse to a longitudinal axis of the architectural-structure covering.