Ultrathin socket

The utility model provides an ultra-thin socket. The ultra-thin socket comprises a shell with an opening; the movable cover is provided with an insertion hole, and the movable cover edge can move in the opening between a working position and a retraction position; the first locking part is positioned in the shell; the floating piece can move in the shell between a first position and a second position; the self-locking piece is provided with a guide inclined plane and a second locking part matched with the first locking part, the self-locking piece can move in the shell between a locking position and an unlocking position, and the guide inclined plane is provided with a first end and a second end; the transmission assembly comprises a reversing transmission part, and the reversing transmission part is in transmission connection with the first transmission part and the second transmission part. According to the utility model, the situation that the bolt of the plug is exposed due to the fact that the movable co