The invention discloses an opening and closing
actuator for an automobile refueling / charging port cover, and belongs to the field of automobile accessories. The opening and closing
actuator comprises a lock pin, a locking steel wire and an electric bolt, wherein the lock pin is provided with a heart-shaped groove and a locking slot and is provided with four limiting steps, the heart-shaped groove is divided into a locking track, a limiting groove, a locking groove, a limiting groove and an unlocking track which are in communication in sequence; and a rotating wheel driven by a forward and reverse rotation motor is connected to the lower portion of the electric bolt, a rotating column is fixedly connected to one side of the rotating wheel, a connecting groove allowing the upper end of the rotating column to be inserted therein and move is formed in the lower end face of the electric bolt, the connecting groove comprises a guide groove coaxial with the rotating wheel and a linkage groove with the
radius smaller than that of the guide groove, and the lower end of the rotating wheel is connected with a rotating rod through a gear pair. According to the
actuator, the situation that locking is not in place is avoided, stable locking and unlocking can be achieved, production,
machining and assembling are easy, and the production cost can be saved, wherein an electric lock mechanism can still realize the function when a power
system breaks down.