Patent attributes
A cordless motorized roller shade includes a motorized operation device, a shading device mounted on the motorized operation device and hanging down, and a combination module detachably mounted between the motorized operation device and the shading device. Thus, the roll cloth member of the motorized operation device is pressed by the holding units of the shading device so that the roll cloth member is kept at a straight state smoothly when hanging down. In addition, when the roll cloth member is moved upward, the rotary return wheel module of the motorized operation device aids the upward movement of the roll cloth member to reduce consumption of the electric power of the drive motor of the motorized operation device during operation so that the roll cloth member is folded upward in an energy-saving manner.