Door hinge

A hinge, including:

• an inner door hinge part and an outer door hinge part, wherein the inner and outer door hinge parts comprise fixing means in the form of hinge plates, for mounting to door frame and to door associated with the door frame, respectively, wherein the outer door hinge part comprises two bearing portions which are fixedly connected together by the fixing means, and wherein the inner door hinge part comprises one bearing portion which is arranged between two bearing portions of the outer door hinge part,
• wherein at least one of the bearing portions of the inner door hinge part or the outer door hinge part comprises:
• an end face recess in the form of a blind hole with a flat base spanning an entire cross section of the blind hole and being formed integrally with a cylindrical wall of the at least one bearing portion of the inner door hinge part or the outer door hinge part,
• a first cylindrical sliding cup element lying in the blind hole with an end face outer wall superficially on the flat base of the blind hole, wherein the first cylindrical sliding cup element comprises a ball socket-shaped wall and a metal ball lying in the ball socket-shaped wall, and
• a second cylindrical sliding cup element lying fully or partly in the blind hole, wherein, on an end face of the second cylindrical cup element pointing towards the ball, the second cylindrical cup element has a concave ball socket-shaped wall lying superficially on a surface of the metal ball, wherein the second cylindrical sliding cup element, on an end face pointing away from the ball, has a central recess in which a cylindrical protrusion
• of an adjacent bearing portion of the inner door hinge part or the outer door hinge part is configured to engage, wherein the protrusion rests with an end face on a base wall of the central recess.