Door drive device for a door of a wagon

A vehicle comprising at least one door, said at least one door comprising:

• at least one door panel mount displaceable along a first spatial axis substantially perpendicular to a plane of a door panel mounted on the at least one door panel mount and along a second spatial axis extending substantially horizontal in use and substantially perpendicular to the first spatial axis,
• a drive motor;
• and
• a spindle configured to be rotated by means of the drive motor,
• wherein:
• a displacement of the at least one door panel mount along the first spatial axis, the second spatial axis, or both the first and second spatial axes is effected by means of a guide fork being displaceable by an associated spindle nut slidably engaged with the guide fork, wherein the spindle nut is driven by rotation of the spindle and wherein the spindle and the drive motor are mounted to the vehicle;
• the at least one guide fork has an elongate upper portion slidably engaging in an upper recess of the associated spindle nut and an elongate lower portion slidably engaging in a lower recess of the associated spindle nut, wherein the upper portion and the lower portion are only connected with one another on one side of the spindle nut;
• wherein the upper and lower portions of the at least one guide fork are arranged substantially perpendicular to the spindle;
• and
• the door panel is displaceable along the first spatial axis from a retracted position to an extended position, and the guide fork is configured to be displaceable with respect to the spindle nut along the first spatial axis from the retracted position to the extended position without disengaging from the spindle nut.