Patent ID: 8876541

Claim:
A power plug, comprising: an insulating housing having a top plate in which a receiving barrel is vertically crossed, a top edge of the receiving barrel protruding upward to form a blocking wall; a top cover covering a top end of the receiving barrel of the insulating housing, a substantial middle of a bottom face of the top cover being concaved upward to form an elongated top fillister; a bottom cover covering a bottom end of the receiving barrel of the insulating housing, a substantial middle of a top face of the bottom cover protruding upward to form a supporting wall, a top face of the supporting wall being concaved downward to form an elongated bottom fillister apart facing the top fillister; a sliding strip of which top and bottom faces protrude upward and downward to form a pair of guide rails, the guide rails being slidably inserted in the top fillister and the bottom fillister to make the sliding strip levelly slidable between the top cover and the bottom cover, two opposite sides of the sliding strip oppositely protruding outward to form serrated sliding teeth; a pair of rotating axles each having a rotating portion, the rotating portions being rotatably restrained between the top cover and the bottom cover and located at two sides of the sliding strip, relative insides of the rotating portions protruding face-to-face to form rotating teeth meshed with the sliding teeth of the sliding strip; a pair of plug pins vertically integrated in the rotating axles respectively and projecting outward through the top cover; and a rotating ring rotatably sheathing outside the receiving barrel and located above the top plate of the insulating housing, an inside wall of the rotating ring protruding inward to form a pair of pushing blocks projecting into the receiving barrel and located at two ends of the blocking wall, two sidewalls of the pushing blocks away from the two ends of the blocking wall being designed as arc shape and designated as pushing sidewalls; wherein the pushing sidewalls can be against two ends of the sliding strip to push the sliding strip to slide forward and rearward in the process of rotating the rotating ring clockwise and counterclockwise until the pushing blocks are blocked by the blocking wall, the slide of the sliding strip drives the rotating axles to rotate and further drives the plug pins to rotate to an eight-shape state and a parallel state.