Receptacle structure and power adapter with the same

A power adapter for connecting a plug with pin holes, comprising:

• a housing;
• and
• a receptacle structure comprising:
• an insulated body, fixed in the housing, and having a first sidewall defining a recess for being inserted by the plug, and an aperture being formed in the first sidewall and defined by a second sidewall, and a protrusion protruding into the aperture from the second sidewall;
• a pair of pins, fixed in the insulated body, and located in the recess, wherein the pair of pins includes a first pin and a second pin, the second pin electrically connects a wire, each of the first and second pins has a free end, and the recess is divided into an inner region and an outer region by the two free ends;
• and
• a micro switch, located in the inner region of the recess, movably connected in the insulated body, disposed correspondingly to the wire, wherein the micro switch has a rotator and a contact sheet, the rotator is rotatably disposed in the aperture, abutting against the contact sheet, and the contact sheet includes a resilient portion disposed between the protrusion and the rotator, abutting against the protrusion,
• wherein the rotator is operable to rotate between a first position and a second position, when the rotator is in the first position, the rotator protrudes into the recess beyond the second sidewall, when the rotator is rotated into the second position, the resilient portion of the contact sheet elastically deforms by a force of the rotation of the rotator, and the contact sheet electrically contacts the wire, and
• wherein the micro switch is made closed to deliver power from the pins to the plug only when the plug is inserted into the inner region of the recess and pushes the rotator to the second position, and the micro switch keeps open when the plug is removed from the inner portion of the recess and the rotator is in the first position.