Abstract: A trailer coupling for a motor vehicle comprises a coupling arm, on the free end region of which a ball neck is formed, on which a coupling ball is arranged. The coupling ball is spherical on the side facing away from the ball neck and has a spherical segment plane on the side facing the ball neck. Between the spherical segment plane and a portion of the ball neck has a smaller outer circumference than the spherical segment plane there is arranged a throat portion having a transition contour extending in a concave manner between the ball neck and the spherical segment. The transition contour transitions with a coupling ball transition region into an external contour of the coupling ball and transitions with a ball neck transition region into an outer surface of the ball neck. The transition contour has a curved configuration having a non-constant radius.

Abstract: The invention relates to a trailer coupling for a motor vehicle, wherein the trailer coupling has a coupling arm, on the free end region of which a ball neck is formed, on which a coupling ball is arranged for attaching a trailer or coupling a load carrier to the motor vehicle. The coupling ball is spherical on the side thereof facing away from the ball neck and has a spherical segment plane on the side thereof facing the ball neck. Between the spherical segment plane and a portion of the ball neck which has a smaller outer circumference than the spherical segment plane there is arranged a throat portion having a transition contour extending in a concave manner between the ball neck and the spherical segment. The transition contour transitions with a coupling ball transition region into an external contour of the coupling ball, in particular into the spherical segment plane, and transitions with a ball neck transition region into an outer surface of the ball neck.

Abstract: The invention relates to a trailer coupling for a motor vehicle, with a coupling arm (11, 111, 211), on the free longitudinal end region (12) of which a coupling body (13), in particular a coupling ball (14), for the coupling of a trailer (190) or a load carrier (290) is arranged, and the other longitudinal end region (15) of which forms a holding end (16) for holding and/or movable mounting on a supporting structure (70) of the motor vehicle (90), wherein the coupling arm has supporting straps (20, 21) which extend along a longitudinal extent of the coupling arm at a transverse distance (22) to each other between the longitudinal end regions (12, 15). It is provided that the supporting straps (20, 21) are connected to each other by a plurality of connecting struts (26-31) in the manner of a lattice structure (24) or rib structure (25).

Abstract: The invention relates to a trailer coupling for a motor vehicle, wherein the trailer coupling has a coupling arm, on the free end region of which a ball neck is formed, on which a coupling ball is arranged for attaching a trailer or coupling a load carrier to the motor vehicle. The coupling ball is spherical on the side thereof facing away from the ball neck and has a spherical segment plane on the side thereof facing the ball neck. Between the spherical segment plane and a portion of the ball neck which has a smaller outer circumference than the spherical segment plane there is arranged a throat portion having a transition contour extending in a concave manner between the ball neck and the spherical segment. The transition contour transitions with a coupling ball transition region into an external contour of the coupling ball, in particular into the spherical segment plane, and transitions with a ball neck transition region into an outer surface of the ball neck.

Abstract: The invention relates to a trailer coupling for a motor vehicle, with a coupling arm (11, 111, 211), on the free longitudinal end region (12) of which a coupling body (13), in particular a coupling ball (14), for the coupling of a trailer (190) or a load carrier (290) is arranged, and the other longitudinal end region (15) of which forms a holding end (16) for holding and/or movable mounting on a supporting structure (70) of the motor vehicle (90), wherein the coupling arm has supporting straps (20, 21) which extend along a longitudinal extent of the coupling arm at a transverse distance (22) to each other between the longitudinal end regions (12, 15). It is provided that the supporting straps (20, 21) are connected to each other by a plurality of connecting struts (26-31) in the manner of a lattice structure (24) or rib structure (25).