Abstract: A roller blind includes an upper rail, a roller blind device located at one end of the upper rail, a position limiting device located at another end of the upper rail, two fixing brackets provided for pivotally connecting with the roller blind device and the position limiting device and fixing above a window, a lower rail disposed at an interval below the upper rail, and a blind material. Two ends of the blind are fixed on the upper rail and the lower rail. The blind is wound on a surface of the upper rail. One end of the position limiting device protrudes from an outer end of the upper rail and is combined with the fixing bracket at a right side and is capable of adjusting lower and upper limit positions of the lower rail from an outer side of the fixing bracket at the right side.

Abstract: A zebra curtain comprises a curtain rolling device, an upper rail, two fixing brackets, a lower rail and a curtain sheet. Two ends of the curtain sheet are respectively fixed on the upper rail and the curtain rolling device. The upper rail comprises a first shaft sleeve and a second shaft sleeve. The first shaft sleeve comprises a first protruding shaft, and the second shaft sleeve comprises a bearing, a second protruding shaft, a spring and a positioning piece. The curtain sheet comprises light-transmitting parts and light-impermeable portions arranged at intervals. The second protruding shaft moves inside the bearing by the spring pressing to be separated from the fixing bracket and to take off the zebra curtain, then adjusting the light-transmitting parts and the light-impermeable parts, and releasing the second protruding shaft to be axially connected with the fixing bracket, thereby completing the assembly of the zebra curtain.

Abstract: The invention provides a conveniently fixed roller blind and a fixing device thereof. The roller blind comprises a sleeving tube, a shaft assembly, a fixing device, a retractable device, two fixing brackets, and a blind. The fixing device includes a shaft housing cover, a press buckle penetrating into the shaft housing cover, a spring retracting in the press buckle, a spring damping sleeve sleeving with the press buckle to allow the spring to expand and retract inside, a damping ring fixed on a bottom end of the spring damping sleeve, and a safety buckle shaft housing provided for the spring damping sleeve and the shaft housing cover to be sleeved into. The press buckle is moved back and forth in the spring damping sleeve by the spring, and is pressed so that the roller blind can be assembled and fixed by the fixing brackets.