Patent ID: 7583496

Claim:
A portable electronic device comprising: a first body having a track portion and a protrudent block; a second body having a fastening part; a guiding assembly having a sliding rod and a guiding part, wherein the two ends of the sliding rod are fixed at the first body, respectively, and the sliding rod passes through the guiding part to allow the guiding part to slide along the sliding rod; a first elastic element connected to the first body and the second body; and a connecting part fixed at the second body and having a sliding portion slidingly disposed at the track portion and a pivot passing through the guiding part, wherein the first body slides relatively to the second body to allow the guiding part to fasten with the fastening part and further to allow the guiding part to slide to the protrudent block, and then the protrudent block moves the fastening part to separate from the guiding part; wherein when the first body slides relatively to the second body, the first elastic element deforms to get an elastic potential energy, and when the protrudent block moves the fastening part to separate from the guiding part, the elastic potential energy of the first elastic element releases to allow the first body to rotate relatively to the second body by the pivot, and then an angle is formed between the first body and the second body.