Table assembly

The arrangement (100) has a locking device (101) including a locking part (3) for holding a folding table (1) at a rear wall (2) of a seat in an approaching position. Locking elements and undercuts are moved past together along a closing direction. The locking elements and/or the undercuts are pushed apart along a drawing direction. The locking part is engaged with the undercuts with the elements in a closing position. The locking part is moved in an opening direction, which is different from the drawing direction, for opening for disengaging the elements and the undercuts from each other.