Patent ID: 8348686

Claim:
A plug security structure, comprising: a plug comprising a latch; a cable inserted through a jacket into the inside of said plug and electrically coupled with said plug; a jacket comprises a front bracket and a rear jacket body, said front bracket defining an axial through hole, said rear jacket body defining an axial through hole in communication with the axial through hole of said front bracket for the passing of said cable, said front bracket comprises a front connection portion for crimp connection with the plug, two upright sidewalls, a sliding groove defined in each said upright sidewall and a stop wall transversely connected between said two upright sidewalls at a top side; a movable cap comprising a front stop block for stopping said latch from operation, two openings bilaterally disposed on a middle part thereof, two elastic retaining members respectively suspending in said two openings, each said elastic retaining member comprising a support portion and an inner rib and an outer rib backwardly extended from said support portion in a forked manner, said outer rib being stopped by a rear end edge of the sliding groove in one said upright sidewall of said front bracket of said jacket, an insertion hole located on a rear side thereof, a middle block slidably insertable into the sliding grooves in said upright sidewalls of said front bracket of said jacket to stop said front stop block at the bottom side of said latch; and a key comprising a front notch defining an inwardly circularly curved inner wall for stopping against the inner ribs of the elastic retaining members of said movable cap to further force the outer ribs of said elastic retaining members of said movable cap toward each other and away from the constraint of the rear end edges of the sliding grooves in the two upright sidewalls of said front bracket of said jacket.