Patent ID: 8840417

Claim:
A safety socket, comprising: a housing, having a front surface, the front surface being formed with a group of socket holes which comprises at least two insertion holes and a groove, the groove enclosing said two insertion holes, the group of socket holes being adapted for a corresponding plug to insert therein, the plug having at least two conductive pins each of which is able to insert in one of the insertion holes and a shell which is able to insert in the groove; a lock mechanism, disposed in the housing, the lock mechanism being located adjacent to the groove, the lock mechanism being able to be switched between a first position and a second position, the shell being able to insert into and escape from the groove when the lock mechanism is located at the second position, the lock mechanism intervening in the groove when the lock mechanism is switched toward the first position so that removal of the shell which is inserted in the groove is prohibited; a switch mechanism, disposed on the housing, the switch mechanism being adapted for manual operation to switch the lock mechanism; wherein the shell forms an internal space and encompasses the at least two conductive pins located within the internal space; wherein the housing has an outer surrounded wall and a central post formed with the at least two insertion holes, and the groove is formed as a surrounded slot which surrounds the central post and locates between the central post and the outer surrounded wall; wherein the lock mechanism includes at least one engagement portion projecting between the central post and the outer surrounded wall, and when the lock mechanism is located at the first position, the at least one engagement portion is frictionally positionally enaged circumferential surface of the shell which is located between the central post and the outer surrounded wall and traverse to the front surface.