CLOSING DEVICE OF A FUEL TANK LID FOR VEHICLES

A closing device includes a box with a hole, a roto-translating pin disposed in the hole of the box in such a way to rotate and translate from a retracted closing position to an extracted opening position; the closing device having spring means to push the roto-translating pin in the opening position, a locking device to lock the roto-translating pin in the closing position, actuation means to move the locking device, an actuator to move the actuation means; the roto-translating pin having a shoulder that protrudes externally from the roto-translating pin to be stopped against the internal wall of the box around the hole in such manner to stop the extraction travel of the roto-translating pin.