a table unit for seats in vehicles , especially airplane seats , includes a first table element provided with the functions of a table , and a second table element provided with at least one other table function . both table elements can be rotated relative to each other about a first pivotal axis by a hinge , and can be fixed in a predetermined position . various table functions can be integrated in a single table unit since both table elements can be rotated about a pivotal axis by another joint , and can be fixed in a predetermined position . the possible table surface and position thereof can be varied in such that certain table functions are protected and service personnel can have access to them .