Power supply device for portable computers

A power supply device comprising a casing, a circuit board mounted inside said casing, a receptacle mounted within said casing for connection to a power supply outlet by a power cable, a plug mounted outside said casing for connection to a power supply outlet socket, and a power output terminal for connection to the power input terminal of a computer, wherein:

• said casing comprises a first opening defining a first tongue adjacent to said plug, and a second opening defining a second tongue adjacent to said receptacle;
• said circuit board comprises two U-clamps and two contact metal springs, said contact metal springs being connected to said power output terminal and said receptacle by conductors;
• said plug comprises a plug housing having two parallel contact prongs and pivotally fastened to said casing on the outside thereof by a pivot and turnable through a 90.degree. angle to hold said contact prongs in a vertical position or a horizontal position relative to said casing, said plug housing having two recessed portions arranged at right angles for engagement with said first tongue alternatively, permitting said contact prongs to be retained in said vertical position or said horizontal position, said contact prongs each having a respective rear contact end, the rear contact ends of said contact prongs being inserted into said first opening and retained in contact with said contact metal springs by said U-clamps when turned by said plug housing to said vertical position;
• and
• said receptacle comprises a receptacle housing connected to said contact metal springs, and a cover hinged to said casing and turned in either direction between a closed position covered on said receptacle housing and an open position removed from said receptacle housing, said cover having a back recess for engagement with said second tongue permitting said cover to be retained in said open position.