Abstract: A motorized window blind includes a top rail, a bottom rail, a plurality of slats assembled between the top rail and the bottom rail, and a control device received in the bottom rail so as to control movement of the slats. The control device includes a transmission unit, a motor, a first cord, a second cord and a power supply. The power supply provides electric power to the motor which is connected to the transmission unit. The first and second cords are respectively connected to the transmission unit, and extend through the slats, and are connected to the top rail. The transmission unit is driven by the motor to lift and lower the slats. The control device includes a detection unit and an angle detection member. The slats are lowered when the detection unit detects the power supply is low. The angle detection member angularly controls the salts status.

Abstract: An electric curtain includes an upper beam, two curtain ropes, a curtain body and a lower beam. The upper beam includes a rotating shaft, a pivotal member, two rope winders, a controller and a wireless control unit installed inside the controller. The wireless control unit has the technical feature of receiving and matching with a wireless transmission communication protocol originated from the external, thereby allowing the electric curtain to achieve the effect of establishing the most optimal electrical conduction and wireless communication transmission between the two based on the external wireless transmission communication protocol selected and matched.

Abstract: A window curtain includes a rotary tube located in the top rail, and a curtain is connected between the top rail and the bottom rail. A scrolling device is located in the tube and includes a torsion spring mounted to a fixed shaft. A sleeve is connected to the fixed shaft. An adjustment unit is connected to the fixed shaft. The torsion spring is located between the sleeve and the adjustment unit. The adjustment unit includes a housing, a tubular part and a resilient member. The first end of the torsion spring is fixed to the tubular part. The torsion spring is compressed or released by rotating the adjustment unit. The tubular part includes ratchets which are engaged with a pawl in the housing to maintain the tubular part and the torsion spring from rotating reversely.

Abstract: A window blind includes a headrail, a blind body, two ladder tape assemblies and a bottom rail. By the technical features that the lift cords of the ladder tape assemblies are set in the mesh webbings, any one of the slats is surrounded by the supporting cords of the ladder tape assemblies arranged opposite to each other, and the two ends of the supporting cords are respectively braided and connected to the mesh webbings of the two ladder tape assemblies arranged opposite to each other, in addition to the effect of stabilizing the support between any of the slats, it can also reduce the possibility of the lift cords of the ladder tape assemblies being pulled out, thereby effectively preventing children from being accidentally entangled by the lift cords.

Abstract: A window blind includes a headrail, two lift cords, a blind body, a bottom rail and two cord winding devices. The two cord winding devices are respectively installed on the bottom of the bottom rail. Subject to the technical feature that the other ends of the two lift cords are respectively tied to the adjustment columns of the two cord winding devices, if the winding stroke is inconsistent and the blind body is folded unevenly or skewed when the window blind is folded or stretched, the adjustment column of one cord winding device can be fine-adjusted to let the respective lift cord be gradually wound and covered on the adjustment column, so that the bottom rail and the blind body can be gradually adjusted to be substantially parallel to the bottom of the headrail, thereby effectively achieving the effect of fine-tuning and correcting the blind body.

Abstract: A window blind includes a headrail, a controller, a rotating rod, a pivoting member, a blind body, a bottom rail, two lift cord sets, two tilt cord sets and two cord winding assemblies. With the technical feature that the rotating rod and the tilt members of the cord winding assemblies are arranged in the same axial direction in sequence, the effect of almost synchronous rotation can be achieved, thereby optimizing the complexity of the overall blind window components or related parts.

Abstract: A window blind includes a headrail, two lift cords, a blind body, a bottom rail, and two cord winding assemblies that are respectively installed on two opposite sides of the long axis of the bottom rail. The other ends of the lift cords are respectively tied to respective adjustment columns of the cord winding assemblies. When the window blind is folded or stretched, unfortunately, when the winding stroke is inconsistent, the blind body is not folded uniformly or skewed, and the adjustment column of the cord winding assembly on one side can be finely adjusted, so that one of the lift cords is gradually wound and covered on the adjustment column, and indirectly drives the bottom rail and the blind body to gradually adjust to substantially parallel to the bottom of the headrail, thereby effectively achieving the effect of fine-tuning and correcting the blind body.

Abstract: A control rope guide device for a window curtain assembly includes a bottom part and a top part. The top part is connected to the top of the bottom part. The control rope guide device is cooperated with the window curtain assembly to separate two control ropes apart from each other so as to smoothly expand or lift the curtain.

Abstract: A window blind includes a headrail, a controller, a rotating rod, a pivoting member, a blind body, a bottom rail, two lift cord sets, two tilt cord sets and two cord winding assemblies. With the technical feature that the rotating rod and the tilt members of the cord winding assemblies are arranged in the same axial direction in sequence, the effect of almost synchronous rotation can be achieved, thereby optimizing the complexity of the overall blind window components or related parts.

Abstract: A window blind includes a headrail, two lift cords, a blind body, a bottom rail, and two cord winding assemblies that are respectively installed on two opposite sides of the long axis of the bottom rail. The other ends of the lift cords are respectively tied to respective adjustment columns of the cord winding assemblies. When the window blind is folded or stretched, unfortunately, when the winding stroke is inconsistent, the blind body is not folded uniformly or skewed, and the adjustment column of the cord winding assembly on one side can be finely adjusted, so that one of the lift cords is gradually wound and covered on the adjustment column, and indirectly drives the bottom rail and the blind body to gradually adjust to substantially parallel to the bottom of the headrail, thereby effectively achieving the effect of fine-tuning and correcting the blind body.

Abstract: A method for controlling curtain position of a curtain assembly includes a motor and a control unit. The motor includes a detection unit for detecting the working current of the motor. When the curtain moves upward and stops, the detection unit detects the working current increases. The detection unit sends a signal to a processor of the control unit to judge that the curtain reaches the upper-most position. Then the control unit stops the motor and demands the motor to operate reversely a range to lower the curtain slightly. The curtain that is lowered by operating the motor reversely is defined as at a limited position. When the curtain is lowered by the motor, the lower-most position of the curtain is defined by a pre-set number of revolutions of the motor. The pre-set number of revolutions of the motor is set by the control unit.

Abstract: A window curtain includes a top rail, a bottom rail and a curtain between the top and bottom rails. A transmission unit and a scrolling unit are received in the bottom rail. Transmission unit includes a control member, a motor, and a shaft connected to the motor. The scrolling unit includes a case in which a passive part, a first prat and a second part are accommodated. The shaft of the motor drives the scrolling unit. A first rope is connected to the first part. A second rope is connected to the second part. The first and second ropes pass through the curtain and are connected to the top rail via the first and second transition members. The transmission unit and the scrolling unit are received in the bottom rail to reduce the weight of the top rail, and are easily maintained.

Abstract: A securing device includes an attachment plate and a holder. The attachment plate includes a first face attached to a wall or ceiling, and at least one bolt protrudes from the second face of the attachment plate. The holder includes a first part and a second part, wherein the first part is connected to the at least one bolt which is connected with a nut. The second part includes a first arm and a second arm. The first and second arms hold the curtain top rail. The wall of ceiling is not damaged while curtain top rail is held by the holder.

Abstract: An engaging unit mounted on a head beam of a blind is provided. The engaging unit includes a spring holder, extension spring, sliding holder, pull cord and pull cord holder. Two ends of the extension spring are hooked to the spring holder and sliding holder, respectively. An engaging portion of the pull cord holder engages with the head beam. The pull cord has one end disposed at a cord fastening portion of the pull cord holder and the other end wound around a first cord-winding portion of the sliding holder and a second cord-winding portion of the pull cord holder by predetermined journeys. The sliding holder slides to and fro on the head beam in response to the pull cord's ascent and descent and the extension spring's extension and contraction. A blind with the engaging unit is further provided and includes a head beam, blind body and bottom beam.

Abstract: A window blind includes: a headrail; a blind body and a cord reel, both mounted on the bottom wall of the headrail; two lift cords each having one end fixedly provided at the cord reel and the opposite end inserted through the headrail and the blind body and then fixed to the lower end of the blind body; and a weight and a bottom rail, both provided at the lower end of the blind body. The weight and a slat of the blind body are mounted into the bottom rail through either of the lengthwise ends of the bottom rail and are thus received in the bottom rail, with the junction between the slat and the other slats exposed through a mounting aperture of the bottom rail. The bottom rail can be mounted as needed to enable stable expansion and retraction of the window blind.

Abstract: A slat angle adjustment mechanism adapted for use with slats of a Venetian blind includes a body shell and a transmission unit. The transmission unit includes a transmission gear set and a retractable member. The transmission gear set has a gear and a screw. A position-limiting hole of the gear corresponds in position to a second through hole of the body shell. The retractable member connects to the extendible segment of the screw and undergoes reciprocating motion along the extendible segment of the screw. Pulling the retractable member from an initial first position of the extendible segment of the screw to a second position of the extendible segment of the screw allows a rib of the body shell to be confined to a limiting portion of the retractable member. Therefore, the slat angle adjustment mechanism is capable of extension, retraction, engagement and fixation.

Abstract: A window shade assembly includes a top box with two end members respectively connected to two ends of the top box, a shaft, a shade and a scrolling unit. The scrolling unit is received in the shaft and located between the two end members. The scrolling unit includes two end parts, a head, a spring and a movable member. By rotating the head to activate the spring to store a scrolling force, such that when pulling the shade, the end part drives the shaft to rotate and lower the shade. The spring does not pulls the shade upward and keeps its scrolling force at a level. When the shade is pushed upward, the shade is lifted automatically.

Abstract: The blind includes an upper beam, a rope winder and a lifting rope. The bottom wall of the upper beam includes a through hole for the lifting rope to penetrate therethrough. The rope winder is arranged inside the upper beam and includes a top plate and a bottom plate. A winding wheel for winding the lifting rope is arranged between the top and bottom plates. The stringing apparatus of the present invention is arranged on the bottom wall of the upper beam and protrudes out of the top surface of the bottom wall. The relationship between a vertical distance from the bottom surface of the top plate of the rope winder to the top surface of the rope winder and a distance from the top surface of the stringing apparatus to the top surface of the bottom wall of the upper beam satisfies the relation of 2-5:1.

Abstract: Provided is a cord-penetrating component for use with a window shade having a top rail, a reeling unit and a cord. A bottom wall of the top rail has a through-hole penetrable by the cord. The reeling unit is disposed in the top rail and has a top plate and a bottom plate. A reeling wheel for reeling in the cord is disposed between the top and bottom plates. The cord-penetrating component is disposed on bottom wall of the top rail and protrudes from top side of the bottom wall. Ratio of vertical distance between bottom side of the top plate of the reeling unit and top side of the bottom plate of the reeling unit to vertical distance between top side of the cord-penetrating component and top side of the bottom wall of the top rail is 2?5:1. A window shade using the cord-penetrating component is further provided.