Westfalia-automotive Gmbh

Waldemar Gross

Kay Angermann

Marc Weiner

Martin Wyrwich

Florian Becker

Bjorn Kleinhans

Michael Drücker

Björn Kleinhans

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.

Trailer coupling having a ball neck and a coupling ball, and method for production thereof

The invention relates to a trailer coupling for a motor vehicle, with a coupling arm (), on the free longitudinal end region () of which a coupling body (), in particular a coupling ball (), for the coupling of a trailer () or a load carrier () is arranged, and the other longitudinal end region () of which forms a holding end () for holding and/or movable mounting on a supporting structure () of the motor vehicle (), wherein the coupling arm has supporting straps () which extend along a longitudinal extent of the coupling arm at a transverse distance () to each other between the longitudinal end regions (). It is provided that the supporting straps () are connected to each other by a plurality of connecting struts (-) in the manner of a lattice structure () or rib structure ().

Trailer coupling with a coupling arm

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Munster, Germany

Waldemar Gross