Vehicle coupling

1. A vehicle coupling comprising

a coupling body ( 1 ) formed by a coupling plate ( 4 ) of a fifth wheel coupling made of metal and having a rear insertion opening ( 9 ) for inserting a vertical king-pin and a closure area for holding the king-pin, the insertion opening ( 9 ) being bordered bilaterally by two coupling horns ( 10 ) of the coupling plate ( 4 ), the coupling plate ( 4 ) configured to have an installed position on a vehicle, in which the coupling plate forms a top surface of the coupling body, and

at least one structural element ( 2 ) arranged under the coupling plate ( 4 ) in the installed position, the at least one structural element being at least one stiffening reinforcement rib ( 5 ) including a horizontally extending base plate ( 14 ), on which vertically positioned wall sections ( 15 a , 15 b ) are formed, wherein the horizontally extending base plate ( 14 ) is formed on opposing lateral sides of the closure area and runs underneath the closure area, and wherein the at least one stiffening reinforcement rib is glued to the coupling plate ( 4 ) by a bulk plastic material ( 3 ) interposed between the at least one structural element and the coupling plate, the at least one structural element being at least partially encapsulated in the bulk plastic material;

wherein the coupling body has a central longitudinal axis coinciding with a longitudinal vehicle direction, wherein the vertically positioned wall sections include a first vertically positioned wall section extending in front of the insertion opening ( 9 ) with respect to the longitudinal vehicle direction, and a second vertically positioned wall section extending into the insertion opening ( 9 ); and

wherein each of the vertically positioned wall sections ( 15 a , 15 b ) extend transverse to the longitudinal vehicle direction from one of the opposing lateral sides of the closure area to the other one of the opposing lateral sides of the closure area.

2. The vehicle coupling according to claim 1 , wherein the at least one structural element ( 2 ) comprises a plurality of reinforcement ribs ( 5 ).

3. The vehicle coupling according to claim 1 , wherein the at least one structural element ( 2 ) is made of at least one of metal, carbon fiber, and fiber glass.

4. The vehicle coupling according to claim 1 , wherein the at least one structural element ( 2 ) is made of a metal foam.

5. The vehicle coupling according to claim 1 , wherein the at least one structural element ( 2 ) is in contact with the bulk plastic material ( 3 ) with at least one upper side.

6. The vehicle coupling according to claim 1 , wherein the bulk plastic material ( 3 ) is fiber-reinforced.

7. The vehicle coupling according to claim 1 , wherein the bulk plastic material ( 3 ) is a thermoplastic or a thermosetting plastic.

8. The vehicle coupling according to claim 1 , wherein the bulk plastic material ( 3 ) is a plastic foam.

9. The vehicle coupling according to claim 1 , wherein the bulk plastic material ( 3 ) is a foam containing metal.

10. The vehicle coupling according to claim 1 , wherein the bulk plastic material ( 3 ) is arranged entirely below the top surface.

11. The vehicle coupling according to claim 1 , wherein the at least one structural element has at least one holder including a threaded insert part, wherein the at least one holder is glued to the coupling body ( 1 ) via the bulk plastic material ( 3 ) and is inserted into and partially surrounded by the bulk plastic material.

12. The vehicle coupling according to claim 1 , wherein the at least one structural element has at least two bearing points arranged in opposite lateral positions of the coupling body, wherein the bearing points are glued to the coupling body ( 1 ) via the bulk plastic material ( 3 ).

13. The vehicle coupling of claim 1 , wherein in the installed position, the bulk material forms a bottom outer surface of at least portions of the vehicle coupling.

14. The vehicle coupling according to claim 1 , wherein the at least one structural element is completely encapsulated in the bulk plastic material.