Door hinge with concealed bearing

Abstract

The plate has outer and inner parts (1, 2) with a fastening unit for mounting the plate on a door frame. The inner part is placed between two cylindrical supporting sections (1a), which are placed on the outer part. Two supporting parts (4, 6) made up of rugged plastic such as Teflon, are placed between the sections. A ball (5) made of steel is arranged between the parts (4, 6), and a set screw (7) is screwed into the sections. - The support part (6) exerts pressure against the ball (5) using the set screw, where the ball exerts the pressure against the support part (4).

Description

technical field [0001] The invention relates to a hinge device for a door, in particular to a hinge for a door which is easy to rotate, wears very little, does not need maintenance and can adjust its installation position three-dimensionally. Background technique [0002] Existing door hinges generally consist of an inner and an outer door hinge unit which include additional means to allow it to be mounted to the door frame or door. The inner door hinge unit is installed between two or more cylindrical bearing parts on the outer door hinge unit, and the bearing parts are exposed to the outside. Theoretically speaking, the door hinges in the prior art are equipped with bearing components, and it is hoped that the bearing components will bear the radial friction force of the door shaft, but due to the unreasonable structure of the internal and external door hinge units, when the internal door hinge unit When rotating, other components other than the bearing components also be...

AI Technical Summary

Problems solved by technology

Theoretically speaking, the door hinges in the prior art are equipped with bearing components, and it is hoped that the bearing components will bear the radial friction force of the door shaft, but due to the unreasonable structure of the internal and external door hinge units, when the internal door hinge unit When rotating, other parts other than the bearing parts also bear the radial friction of the door shaft, which hinders the door from rotating.

When the various parts of the hinge device are installed with deviations, or when they are used for a long time, the phenomenon that the bearing parts are not stressed and the claw parts are stressed, the hinge device is severely worn, the rotation is heavy, and the service life is short. For heavy doors , the hinge device needs to be replaced frequently, which brings inconvenience to people

[0003] German patent DE-OS 24 12 725 introduces this type of door hinge. The door hinge disclosed in this patent has the following disadvantages: since the rotating parts and bearing grooves are made of the same material, in the above-mentioned patents all use In addition, the bearing groove adopts a conical shape, and when the rotating element is spherical, there is only a narrow annular contact surface between the rotating element and the bearing groove, which It will also lead to high wear of the bearing device

The hinge mechanism is also subject to severe wear and heavy turning

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