Multi-functional charging device

Claim 1

A multi-functional charging device generally comprising a housing defining by a lower housing and an upper housing, an electronic switching circuit being disposed therein, wherein one of a plurality of plugs can be selected and installed onto the lower housing based on a specific application, characterized in that: said lower housing being provided with an opening at suitable location, the inner wall of said opening being disposed with a projected socket, the front edge of said opening being also disposed with a circular shaft seat, an inner housing socket being disposed within said lower housing corresponding to said opening, the front panel of said inner housing socket being disposed a pair of grooves and a circular cutout being disposed at the side wall of said inner housing socket; a sliding socket being disposed within said inner housing socket, a stud being disposed at rear portion of said sliding socket, a coil spring being sleeved onto said stud which biases the inner wall of said inner housing socket at one end in such a manner that said sliding socket may move to and fro, an elastic tab declining slightly downward is disposed at rear middle portion of said sliding socket, a projected boss being disposed at said elastic tab, said projected boss being against the bottom of the projected socket of said lower housing, the side wall at front portion of said sliding housing being disposed with a half shaft seat, a pivoting hole being defined by the combination of said circular shaft seat of said lower housing and said circular cutout of said inner housing socket; a pair of conducting plates being disposed at bottom of said inner housing socket, a curve portion being disposed at front portion of said conducting plate corresponding to said pivoting hole of said inner housing socket, said conducting plate being electrically connected to said electronic switching circuit; a changeable plug being configured a pair of conducting legs disposed on a plastic housing, said plastic housing being provided with a pair of projected shafts at rear portion, said projected shaft being received and installed within said pivoting hole defining by the combination of said half shaft seat of said sliding socket, said circular socket of said lower housing and said circular cutout of said inner housing socket, said conducting legs being extended rearward and formed a pair of contacting terminals at said plastic housing, said contacting terminals being contacted with said curve portion of said conducting plates when said plug is installed and extended.