Abstract: A cordless shade roller is revealed. The cordless shade roller includes a roller tube, a passive-end bracket set on a first end of the roller tube, and an active-end bracket disposed on a second end of the roller tube. The active-end bracket is a cap formed by assembly of a first cover with a second cover and having a narrow space therein. An S-shaped constant force spring is clipped in the narrow space of the cap. The S-shaped constant force spring consists of a first wound roll used as a storage drum, a second wound roll used as an output drum, and an S-shaped spring strip wound around the first wound roll and the second wound roll reversibly. No baffle is disposed on each of two sides of the first wound roll and of the second wound roll.

Abstract: A cordless Roman style shade is revealed. The cordless Roman style shade includes at least one piece of middle fabric arranged between a front fabric and a rear fabric. The middle fabric and the rear fabric have the same width. A front end and a rear end of the middle fabric are connected to a rear side of the front fabric and the rear fabric respectively without the use of horizontal rods. The front fabric is driven by the middle fabric to be retracted or extended in the opposite direction when the rear fabric and the middle fabric are retracted and wound around a rotating shaft. Thus the front fabric is retracted or extended horizontally and evenly without the use of the horizontal rods.

Abstract: A light adjusting roller blind device has a support assembly, and a driving assembly, an adjusting mechanism and a blind assembly mounted on the support assembly. A blind of the blind assembly can be adjusted by simply detaching a second holding part from a first holding part and then releasing a first rope. The blind can be stably lowered along with the releasing of the first rope. Therefore, it is easy and convenient for the user to adjust the blind of the light adjusting roller blind device.

Abstract: A light adjusting roller blind device has a support assembly, and a driving assembly, an adjusting mechanism and a blind assembly mounted on the support assembly. A blind of the blind assembly can be adjusted by simply detaching a second holding part from a first holding part and then releasing a first rope. The blind can be stably lowered along with the releasing of the first rope. Therefore, it is easy and convenient for the user to adjust the blind of the light adjusting roller blind device.

Abstract: A transmission assembly for a roller blind has a mounting frame, a roller, a coil spring, a spring axle, a turning element, a torsional spring, a major damper, a positioning device and a blind cloth device. The roller is mounted in the mounting frame. The coil spring is mounted in the roller. The spring axle is mounted in the coil spring. The turning element is connected to the spring axle. The torsional spring is mounted in the turning element. The major damper is connected to the coil spring and has a turning rod. The positioning device is mounted in the roller and has a rotating mount, a rail mount and a positioning ball. The rail mount is mounted in the rotating mount and has two rails. The positioning ball is mounted between the rotating mount and the rails. The blind cloth device is mounted the mounting frame.

Abstract: A safety assembly for a roller blind has a fixing device, a moving device, a flexible element, a rotating device, a hooking device and a bead cord. The fixing device has a base panel, a stopping arm and a reset mount. The moving device is movably connected to the fixing device between the stopping arm and the reset mount. The flexible element is mounted between the reset mount and the moving device to push the moving device to move relative to the fixing device. The rotating device is rotatably mounted on the moving device and has a stopping disc and a rotating disk. The hooking device is mounted securely below the fixing device, the moving device and the rotating device. The bead cord is mounted between the rotating device and the hooking device to allow the rotating device rotating relative to the moving device by pulling the bead cord.

Abstract: A transmission assembly for a roller blind has a mounting frame, a roller, a coil spring, a spring axle, a turning element, a torsional spring, a major damper, a positioning device and a blind cloth device. The roller is mounted in the mounting frame. The coil spring is mounted in the roller. The spring axle is mounted in the coil spring. The turning element is connected to the spring axle. The torsional spring is mounted in the turning element. The major damper is connected to the coil spring and has a turning rod. The positioning device is mounted in the roller and has a rotating mount, a rail mount and a positioning ball. The rail mount is mounted in the rotating mount and has two rails. The positioning ball is mounted between the rotating mount and the rails. The blind cloth device is mounted the mounting frame.

Abstract: A safety assembly for a roller blind has a fixing device, a moving device, a flexible element, a rotating device, a hooking device and a bead cord. The fixing device has a base panel, a stopping arm and a reset mount. The moving device is movably connected to the fixing device between the stopping arm and the reset mount. The flexible element is mounted between the reset mount and the moving device to push the moving device to move relative to the fixing device. The rotating device is rotatably mounted on the moving device and has a stopping disc and a rotating disk. The hooking device is mounted securely below the fixing device, the moving device and the rotating device. The bead cord is mounted between the rotating device and the hooking device to allow the rotating device rotating relative to the moving device by pulling the bead cord.

Abstract: A curtain has a substrate, multiple horizontal row assemblies, a rope and at least one flexible tube. The horizontal row assemblies are mounted horizontally on a surface of the substrate at intervals and each horizontal row assembly has at least one rope-extended element. The rope is extended vertically through the rope-extended elements to form multiple rope segments and has two ends fastened to the rope-extended elements near the bottom of the substrate. The flexible tube is fastened to the rear surface of the substrate and at least sheathes the at least one rope segment between the two horizontal row assemblies near a bottom of the substrate. Children cannot touch or pull the rope, which is sheathed by the flexible tubes fastened to the substrate, so the curtain is safe.

Abstract: A curtain assembly has a frame, a first curtain, a second curtain and a positioning device. The frame has a top portion, a bottom portion and two side portions mounted between the top portion and the bottom portion. The curtains are attached respectively to the top portion and the bottom portion of the frame and each has a permeability to light different from each other. The positioning device is mounted in the frame and connected to the first and second curtains to hold the first and second curtains at desired positions. Accordingly, a curtain assembly with an adjustable permeability to light and versatile in use is provided.

Abstract: A window shade roller cutting assembly includes a base placed on a surface, a hollow guiding rod perpendicularly mounted on top of the base and having a fixing plate securely mounted on a side of the guiding rod, a measuring rod movable relative to the guiding rod, a clamping device mounted under the fixing plate and being able to selectively move from a first position to a second position and vice versa for securing and releasing a workpiece, a motor mounted on a side of the guiding rod to drive the driving disk to rotate, and a controlling device pivotal in relation to the fixing plate and operatably connected to the motor to activate the motor to rotate so that when the controlling device is pivoted toward the workpiece which is clamped by the clamping blocks, the cutting blade is able to cut the workpiece.