Folding door with two or more intrinsically rigid folding shutter elements with alternately noncollapsing or collapsing element edges and actuation device for same

A folding door comprising:

• two or more intrinsically rigid folding shutter elements, each comprising alternating noncollapsing and collapsing door element edges,
• at least one guide means which can be raised and lowered on or in one or more guide rails to thereby raise and lower a noncollapsing door element edge of the two or more shutter elements, wherein the noncollapsing door element edge includes a pivot point,
• a displacement means which is activated by movement of the guide means to thereby change a distance between the at least one pivot point and the one or more guide rails at a beginning of an opening of the folding door, as well as at an end of a closing of the folding door;
• wherein:
• during the opening of the door, the guide means is raised in the guide rail thereby activating the displacement means to rotate the displacement means from a first rotational orientation to a second rotational orientation to perform a first door actuation accompanying the beginning of the opening of the folding door and increase the distance between the pivot point and the one or more guide rails, the displacement means moving together with the at least one guide means and at the second rotational orientation for the completion of the opening of the door, and
• during the closing of the door, the guide means is lowered in the guide rail thereby activating the displacement means to rotate the displacement means from the second rotational orientation to the first rotational orientation to perform a second door actuation accompanying the end of the closing of the folding door and decrease the distance between the pivot point and the one or more guide rails.