Patent ID: 8149571

Claim:
A portable electronic device comprising: a cover comprising a first end wall, a second end wall opposite to the first end wall, and a sidewall connecting the first end wall and the second end wall, the sidewall defining a sliding slot, two ends of the sliding slot respectively extending to the first end wall and the second end wall; and a body comprising a protrusion formed thereon, slidably received in the sliding slot to allow the protrusion to slide to the first end wall or the second end wall; a hinge assembly including a pivoting body and a pin, the pivoting body fastened to the cover, the pin mounted to the sliding slot, and slidably attached to the pivoting body and releasably latching with the protrusion; an elastic member; wherein the protrusion defines a channel, and the pin is mounted within the cover, and releasably latches in the channel; one end of the elastic member is fastened to the pivoting body, the other end resists the pin towards the sliding slot.