Seat adjustment device and aircraft or spacecraft

1. A seat adjustment device for an aircraft or spacecraft, comprising:

a seat rail for connection to a floor; and

a seat connection for connection to a seat;

wherein a worm is provided which can be actuated to adjust the seat connection relative to the seat rail, wherein the seat rail has teeth and the seat connection supports the worm in a rotatably mounted manner, the teeth meshing with the worm, and the seat rail is configured as a profile with a head portion which comprises the teeth, the seat rail comprising a base portion and the head portion, wherein the head portion has the teeth on its upper side in a vertical direction of the aircraft or spacecraft, and wherein a respective leg of a row of seats is formed in a one-piece construction with the seat connection, the seat connection being adjustable relative to the seat rail;

wherein the seat connection comprises a seat adapter and an insertion adapter which can be brought into engagement with one another, by the insertion adapter being inserted, at least partially, into the seat adapter in a longitudinal direction of the seat rail, for engagement over the seat rail in a transverse direction of the seat rail; and

wherein the seat adapter engages around the head portion of the seat rail and is configured with a receiving element and the insertion adapter comprises an engagement element which can be brought into engagement with the receiving element and the head portion.

2. The seat adjustment device according to claim 1 , wherein the base portion adjoins the head portion.

3. The seat adjustment device according to claim 2 , wherein the base portion comprises aluminum.

4. The seat adjustment device according to claim 2 , wherein the head portion comprises titanium.

5. The seat adjustment device according to claim 1 , wherein the teeth partly extend in a peripheral direction around an axis of rotation of the worm.

6. The seat adjustment device according to claim 1 , wherein the seat connection engages over the seat rail in the transverse direction of the seat rail.

7. The seat adjustment device according to claim 6 , wherein the seat connection engages over the head portion of the seat rail in the transverse direction of the seat rail.

8. The seat adjustment device according to claim 1 , wherein the engagement element is configured as a pin, the receiving element is configured as an approximately semicircular recess, and the seat rail is configured with a corresponding, approximately semicircular, recess behind the head portion, the two semicircular recesses complementing one another to form an approximately fully circular recess into which the pin can be inserted in the longitudinal direction of the seat rail.

9. The seat adjustment device according to claim 1 , wherein the seat connection comprises a seat adaptor and an insertion adaptor, wherein the seat adapter has bearings which mount the worm at its opposing ends, and wherein the insertion adapter comprises a drive which can be actively connected to the worm for actuation thereof by engagement of the insertion adapter with the seat adapter.

10. The seat adjustment device according to claim 9 , wherein the insertion adapter comprises an electric motor.

11. The seat adjustment device according to claim 1 , wherein two sealing lips are provided which cover the seat rail with their free ends.

12. Seat adjustment device according to claim 1 , wherein the seat connection is mounted such that it slides and/or rolls on the seat rail, the seat connection preferably comprising rolling bodies which are supported on the head portion of the seat rail.

13. The seat adjustment device according to claim 11 , wherein the two sealing lips cover the teeth of the seat rail with their free ends.

14. An aircraft or spacecraft, comprising:

a seat adjustment device according to claim 1 ;

a floor, to which the seat rail of the seat adjustment device is connected; and

a seat, to which the seat connection of the seat adjustment device is connected.

15. The aircraft or spacecraft according to claim 14 , wherein the floor comprises crossbars with a respective flange, a base portion of the seat rail being at least partly arranged in an opening in the respective flange and being connected thereto.

16. The aircraft or spacecraft according to claim 14 , further comprising:

a passenger terminal device, which is arranged on the seat;

a rail, which extends in a longitudinal direction of the aircraft or spacecraft and is connected to a data processing system and/or an energy supply system; and

an arm, which is connected to the seat and engages in a displaceable manner in the rail in the longitudinal direction of the aircraft or spacecraft, the arm connecting the passenger terminal device to the data processing system and/or to the energy supply system.