Patent ID: 7106597

Claim:
An automatic retractable device of a flexible printed circuit board, comprising: a bracket comprising a faceplate and two opposite side plates, wherein the side plates are located on two opposite sides of the faceplate, a first end of each side plate comprises a hook, and each side plate comprises a slide; a first roller connected to a second end of each side plate, wherein each slide is near the second end of each side plate; a second roller, wherein each of two ends of the second roller has a protruding portion, the second roller is installed in the slide of each side plate and the protruding portions of the second roller protrude out of the slides, wherein the flexible printed circuit board comprises two curves respectively wrapping the first roller and the second roller, and wherein the flexible printed circuit board is located in the bracket and extending out of two ends of the bracket; and two elastic components respectively located on two sides of the bracket, wherein each elastic component is connected to the protruding portion of the second roller and the hook on the same side.