Closure device for a charging or tank flap of an automotive vehicle

The invention is based on a closure device for a charging or tank flap of an automotive vehicle, comprising a flap element, comprising a drive unit including an electrical actuator for traversing the flap element between a closed position and an open position and a guide unit disposed within a body of the automotive vehicle, wherein the guide unit includes two guide rails extending in parallel to one another and two carriages arranged to be traversable on the guide rails, on which the flap element is arranged. The drive unit may include at least one gear unit for the synchronous transmission, to both carriages, of a drive movement generated by the actuator.