Patent ID: 8196264

Claim:
A portable electronic device comprising: a cover; a main body having a matching surface, the main body defining a receiving groove, a latching groove and a cavity, the receiving groove and the latching groove extending through the matching surface, the cavity being beneath within the main body, the receiving groove and the cavity defined at opposite ends of the latching groove, the receiving groove, the latching groove and the cavity in communication with each other and longitudinally coaxial; a latching module fixed in the latching groove, the latching module including a fixing member, the fixing module defining a sliding hole longitudinally coaxial with the cavity; and a hinge assembly including: a positioning module; a connecting module rotatably connected to the positioning module, the connecting module and the positioning module extending through the sliding hole of the fixing member and the cavity of the main body and allowing the connecting module to slide out from the sliding hole and keep the positioning module in the fixing member; and a rotating module being received in the receiving groove, one end of the rotating module being rotatably attached to the connecting module, and another end being rotatably attached to the cover.