US Patent 7931482 Safety socket structure

A safety socket structure includes a casing, two control pieces, and two contact pieces. The casing is provided with two insertion holes and two through-holes. The interior of the casing is formed with connecting positions corresponding to the insertion holes. The two control pieces are liftably provided in the casing and protrude through the two through-holes to the outside of the casing. The two contact pieces are provided in the casing and abut the two contact pieces, thereby controlling the two contact pieces to extend into the connecting positions selectively. Via this arrangement, a safety socket structure that has a lower cost and is not liable to suffer damage can be achieved.