A closure device for connecting two parts includes a first closure part, a second closure part which for closing the closure device is attachable to the first closure part in a closing direction, is held at the first closure part in a closed position, for opening the closure device is movable relative to the first closure part in an opening direction different from the closing direction, and after opening of the closure device is removable from the first closure part against the closing direction for separating the closure parts, and magnetic means which act between the first closure part and the second closure part, in order to support the closing of the closure device by providing a force of magnetic attraction.