Abstract: A multi-specification plug adapter, the multi-specification plug adapter comprises a first outer casing and a second outer casing assembled with each other. The second outer casing is provided with one or more than one socket hole; one or more than one slideable plug is located in the first outer casing. The plug is provided with a push button. The push button is located outside the first outer casing. The first plug pins or the second plug pins of the plug can be extended out of the first outer casing by pushing the push button. One set of or more than one set of corresponding shaft and shaft hole is located between the second outer casing and the first outer casing, the first outer casing can rotate against the second outer casing on the shaft.

Abstract: A multi-specification plug adapter, the multi-specification plug adapter comprises a first outer casing and a second outer casing assembled with each other. The second outer casing is provided with one or more than one socket hole; one or more than one slideable plug is located in the first outer casing. The plug is provided with a push button. The push button is located outside the first outer casing. The first plug pins or the second plug pins of the plug can be extended out of the first outer casing by pushing the push button. One set of or more than one set of corresponding shaft and shaft hole is located between the second outer casing and the first outer casing, the first outer casing can rotate against the second outer casing on the shaft.

Abstract: The universal adapter of the present invention comprises an adapter body having at least one set of power sockets, a power plug and a conductive unit, wherein the power plug has a fixed unit and a rotating unit that is located both ends of the fixed unit inside the adapter body. Each side of the fixed unit comprises male connectors, in which one end of every male connector is assembled with the rotating unit, and another end of every male connector can be protruded through the adapter body. The conductive unit comprises sets of connecting sockets that are corresponding to the set of power sockets, and a set of conductive flat pieces protruded from one end of the sets of connecting sockets, is in contact with the rotating units. The universal adapter is used as a travel adapter that it allows the user to plug their electrical appliances to various power plug standards by changing different male connectors.

Abstract: The automatic locking and releasing structure for a push-pull plug of this invention includes an upper case, a bottom case, a slider and push-buttons. The bottom case is suspended therein with two symmetrically arranged slide tracks that are each provided at the inside thereof with a wedge piece. The opposing sides of the slider are each formed with a resilient retaining arm, and the slider is movably provided between the two slide tracks. The free ends of the resilient retaining arms are movably attached to the push-buttons provided at the outside of the slide tracks. As such, when one manipulates the push-buttons to move along slide slots formed in the upper case and bottom case, the slider may be retracted or extended at the same time thereby subjecting the resilient retaining arms to assume a locking or releasing state with respect to the wedge pieces.