Patent ID: 7753700

Claim:
A safety protection structure for universal sockets, configured between an upper case and a lower case of a universal socket in correspondence to a jack on the upper case to prevent abnormal connection between a plug and a conducting plate in the universal socket, said safety protection structure comprising: a first module, with a first slant contacting a first pin of a 3-pin plug; a second module having a movement direction, with a second slant contacting a second pin of the 3-pin plug, and a sliding chute configured in parallel to the movement direction of said second module; a third module, with a third slant contacting a third pin of the 3-pin plug, and matching the sliding chute of the second module; said sliding chute configured to ensure that the third module and the second module are relatively independent and movable; said second module and third module are respectively configured with a surface area to block the second pin and third pin of said 3-pin plug at the same time; and said first module configured with a bottom surface to push said second module and third module and make them move simultaneously.