A safe curtain control assembly which does not require screws to assemble is revealed. The safe curtain control assembly includes a stopping portion located on a wall of a cavity of a base forming a raised structure, and a recessed area 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 the 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.

A motorized window shade system may comprise a shade tube in a pocket; a window shade attached to the shade tube; a motor configured to rotate the shade tube; an internal temperature sensor configured to measure a first temperature of the motor; an external temperature sensor configured to measure a second temperature of the pocket; and a controller configured to adjust a mode of the system from an override mode to an automated mode.

A connector for coupling to a bead chain is disclosed. In use, the connector is arranged and configured so that the connector can pass over a bearing. In one example of an embodiment, the bearing is positioned in a tensioner so that the connector moves through the tensioner, which is operatively coupled to the bead chain. In one example embodiment, application of a force on the bead chain to move the covering between an extended position and a retracted position, self-orients the connector so that a top portion of the connector faces and/or contacts the bearing so that the connector smoothly passes across an exterior arcuate surface of the bearing. In one example embodiment, the top portion includes a curved surface to contact the curved surface of the bearing.

A control apparatus for controlling rotation of a shaft about an axis includes a roller releasably and rotatably connected to a rear housing mount of a housing that is firmly secured to a wall, an operating cord looped on the roller, a front coupling member co-rotatably coupled with the shaft, and a rear coupling member releasably connected to the roller by a rearward resilient force of a resilient member and movable and non-rotatable relative to the front coupling member. The roller is moved, upon an excess downward pulling force, to a releasing position, where the rear coupling member is moved forwardly to release connection with the roller so as to permit removal of the roller from the housing.

The safety device for a chain of a shade. The invention proposes the development of a tamper-proof safety device configured for a chain of a shade, such as the roller type, which, when not being used, is fixed to the body of the chain, and when being used, the chain is free to slide in order to perform the raising and lowering operations of the roller shade.

A bead chain safety system for roller blinds is revealed. The system includes a fixing base, an assembly base, a rotary disc, a first transmission member, and an elastic member. When a child entangled pulls a bead chain, the first transmission member is retracted into a cavity of the rotary disc and both the rotary disc and the bead chain are released from a rotary-disc mounting space between the fixing base and the assembly base. In order to put the rotary disc and other parts back, first the elastic member and the first transmission member are mounted into the cavity in turn. Then the rotary disc and the bead chain are set into the rotary-disc mounting space. The first transmission member pushed back by the elastic member is locked with and positioned by a second transmission member. Thus the bead chain and other parts are mounted again easily.

A motorized window shade system may comprise a shade tube in a pocket; a window shade attached to the shade tube; a motor configured to rotate the shade tube; an internal temperature sensor configured to measure a first temperature of the motor; an external temperature sensor configured to measure a second temperature of the pocket; and a controller configured to adjust a mode of the system from an override mode to an automated mode.

A pull cord safety device includes a pull cord and a safety unit allowing extension of the pull cord. The safety unit includes a plurality of barrier units. Each barrier unit includes two front barrier ropes and two rear barrier ropes. Each front barrier rope has a front portion extending across and disposed forwardly of the pull cord, and a first intersection portion connected to the front portion. Each rear barrier rope has a rear portion extending across and disposed rearward of the pull cord, and a second intersection portion connected to the rear portion and intersecting and disposed forwardly of the first intersection portion.

A curtain controller structure is disclosed herein. It comprises a fixing seat, an assembling seat having an accommodation space formed between the fixing seat and the assembling seat and a first chamber, a bead chain disc disposed in the accommodation space, a first driving assembly disposed in the first chamber of the assembling seat and having a first driving unit and a second driving unit, and a traction string connected to the first driving unit or the second driving unit of the first driving assembly and the bead chain disc.

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.