Patent ID: 8087946

Claim:
A power adapter having a replaceable plug, comprising: a body comprising: a recess formed therein and having a bottom wall and two side walls; two connection strips mounted inside the recess; a body engagement mechanism mounted inside the recess; an opening formed through one side of the recess; two connection strips mounted on the bottom wall; a resilient beam formed on the bottom wall and having a first arced groove and a second arced groove separately formed on the resilient beam, wherein the first arced groove is more distant from the opening relative to the second arced groove and is positioned higher than the second arced groove; and two stoppers respectively protruding from the two side walls and respectively having a bottom side and a rear side opposite to the opening; a plug slidably mounted inside the recess and comprising: a bottom board; a plug engagement mechanism engaging or disengaging the body engagement mechanism when the plug is slidably moved inside the recess; and at least two conductive prongs mounted on the bottom board and respectively connected with the two connection strips when the plug engagement mechanism engages the body engagement mechanism; and a fixing cover mounted inside the recess and slidably moved to a first location or a second location, with the fixing cover located inside the recess and abutting the plug fixed in the recess when the fixing cover is positioned at the first location, and with the fixing cover partially moved out the recess and maintaining a distance to the bottom board of the plug when the fixing cover is positioned at the second location, wherein the fixing cover comprises: a positioning block, with an edge of the positioning block selectively urging against one of the first arced groove and the second arced groove; and two urging portions, with each urging portion taking an L-like form and having a side urging piece; and a bottom urging piece urging against a bottom of the corresponding stopper inside the recess; wherein the side urging piece urges against the rear side of the stopper and the fixing cover is positioned at the first location when the edge of the positioning block urges against the first arced groove, and wherein the side urging piece is located underneath a bottom of the stopper and the fixing cover is positioned at the second location and partially slides away from the recess through the opening when the edge of the positioning block urges against the second arced groove.