Abstract: A reeling device for curtain cords has multiple dual-layer guiding wheels arranged in line and multiple S-shaped resilient coils. Two adjacent guiding wheels are meshed with each other by gear teeth. Each guiding wheel has a cord winding thereon so that the cords can be operated synchronously. Each S-shaped resilient coil is secured on two adjacent guiding wheels and provides the resilient force to balance the curtain weight. Therefore, the cords are adapted to longitudinally attach on the curtain and to control the extension or contraction of the curtain.

Abstract: A window blind includes an upper beam and a plurality of slats mounted to and below the upper beam. Each slat is formed of extruded plastic and includes a plurality of channels that provide an insulating and noise depression effect. Each slat includes first and second parallel edges and first and second ends extending between the first and second edges. The slats are arranged in a parallel relation and movable between a fully extended state and a fully collapsed state. The channels of each slat extend longitudinally through a whole length of the slat. Each slat includes first and second outer walls forming two opposite flat, parallel surfaces. The first and second edges extend between the first and second outer walls. The channels are located between the first and second outer walls.

Abstract: A Venetian blind includes a main body, a transmission mechanism, and a motorized drive mechanism. The motorized drive mechanism is operated to lift and lower the slats automatically. Thus, the Venetian blind does not need a lift cord, thereby preventing a child from being tangled by the lift cord so as to ensure the environmental safety of the house.

Abstract: A slat structure includes a slat body having an inside formed with a plurality of channels. Thus, the material of the slat structure is greatly reduced by provision of the channels of the slat body, thereby decreasing costs of fabrication of the slat structure. In addition, the total weight of the slat structure is greatly reduced by provision of the channels of the slat body, thereby facilitating package, transportation and assembly of the slat structure. Further, the channels of the slat structure efficiently isolate the source of heat and noise, thereby providing an insulating and noise depression effect.

Abstract: A Venetian blind includes a main body, a transmission mechanism, and a motorized drive mechanism. Thus, the motorized drive mechanism is operated to lift and lower the slats automatically, so that the Venetian blind needs not to provide the lift cord, thereby preventing a child from being tangled by the lift cord so as to ensure the environmental safety of the house.