KR20050027999

A door hinge for a building is provided to prevent the trespass by damaging a hinge by forming a hinge not to be exposed to the front of a building, and to manufacture and assemble a hinge simply. The door hinge for a building comprises the steps of forming frames(1) on upper and lower, right and left sides of a door to make the section exposed to the upper and lower parts, the right and left parts, or, the center, inserting a cylindrical pipe(2) having the same outside diameter and length as the inner dimension of the upper and lower, right and left frames(1) into the upper and lower, right and left frames(1), coupling upper and lower, right and left ends(4a,4b) are coupled to one of four corner spaces(3a,3b,3c,3d) of corner spaces to be exposed vertically and horizontally, and coupling upper and lower, right and left ends(4a,4b) of a hinge shaft(4) to upper and lower, right and left parts of a hinge hole.