DOOR HINGE

Abstract

A door hinge has a first leaf assembly, a second leaf assembly, and a link assembly connected to the leaf assemblies for pivoting of the second assembly on the first assembly. An adjuster in the first leaf assembly can displace the link assembly relative to the first leaf assembly and thereby adjust a position of the door in the frame. The adjuster has an adjusting element projecting from the first leaf assembly in the closed position. The second leaf assembly is formed with a recess in which the projecting adjuster engages in the closed position.

Claims

1. A door hinge comprising: a first leaf assembly; a second leaf assembly; a link assembly connected to the leaf assemblies for pivoting of the second assembly on the first assembly, one of the leaf assemblies being adapted to be secured to an edge of a door panel and the other of the leaf assemblies being adapted to be secured to a door frame for pivotally mounting the panel in the frame for movement between closed and open positions; and an adjuster in the first leaf assembly for displacing the link assembly relative to the first leaf assembly and thereby adjusting a position of the door in the frame, the adjuster having an adjusting element projecting from the first leaf assembly in the closed position, the second leaf assembly being formed with a recess in which the projecting adjuster engages in the closed position.

2. The door hinge according to claim 1, wherein the adjustment element has a tool seat or socket and is rotatable.

3. The door hinge according to claim 1, wherein in the closed position an engagement depth of the adjusting element in the recess is between 4 mm and 20 mm.

4. The door hinge according to claim 1, wherein the adjusting element is from the group of adjusting screw, adjusting spindle and adjusting eccentric.

5. The door hinge according to claim 1, wherein in the closed position the adjusting element is at a lateral spacing between 0.1 mm and 5 mm from a side wall of the recess.

6. The door hinge according to claim 1, wherein the adjusting element is off center in the recess in the closed position.

7. The door hinge according to claim 1, further comprising: two links pivoted to each other and to the leaf assemblies.

8. In combination with the door hinge according to claim 1, a door having an edge in which one of the leaf assemblies is mortised; and a door frame surrounding the door and in which the other of the leaf assemblies is mortised.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0031] The above and other objects, features, and advantages will become more readily apparent from the following description, reference being made to the accompanying drawing in which:

[0032] FIG. 1 is an isometric view of the inventive hinge in the open position;

[0033] FIG. 2 is a vertical section through one of the leaf assemblies of the hinge; and

[0034] FIG. 3 is a large-scale cross-sectional view of FIG. 2.

SPECIFIC DESCRIPTION OF THE INVENTION

[0035] FIG. 1 shows a door hinge according to the invention with a first leaf assembly 1 and a second leaf assembly 2 that are hinged to each other by a pair of links 8a and 8b pivoted on each other by a vertical pivot pin 9. The assemblies 1 and 2 are both of multipart design, each comprising an outer part 13 and an inner part 11, and built to allow adjustment of the position of a door panel 4 carried on the assembly 2 relative to a frame 3. A pair of vertically spaced adjusters each with an adjusting element 5 are provided on the first leaf assembly 1 to move the respective an inner housing part 11 in turn carrying the link assembly 8a, 8b, 9 relative to the respective outer housing part 13. Further adjusters are provided in the illustrated door hinge to move the link assembly 8a, 8b, 9 relative to the inner housing part 11 but here are of subordinate importance.

[0036] As seen in FIG. 1 each adjusting element 5 projects from the first leaf assembly 1. The second leaf assembly 2 is formed in the outer housing part 13 level in height with each of the adjusting elements 5 with a recess 6 formed as a throughgoing hole.

[0037] In FIG. 1 the door hinge is in an open position and in FIG. 3 in the closed position. In the open position both assemblies 1 and 2 face in the same direction and lie on a common plane p defined by their outer faces. In the closed position the planes P of the assemblies 1 and 2 are closely spaced parallel to each other or even coplanar and the assemblies 1 and 2 confronting one another. Here the outer housing part 13 of the assembly 1 is mortised into the door frame 3 so it is fixed therein, and the outer part 13 of the assembly 2 is mortised into the door edge and pivots with the door 4 between the open and closed positions generally about the axis of the pin 9 (vertical direction z).

[0038] As described above each adjusting element 5 projects perpendicular to the plane P from the first leaf assembly 1 in the closed position into the recess 6 of the second leaf assembly 2, thereby providing a further degree of security, namely to deter prying open the door 4 on the hinge edge. Thus even though the inventive door hinge has a compact structure, it has a double function. On the one hand the adjusting element 5 allows adjustment of the position of the door 4 in the frame 3 and on the other hand an improved safety function is achieved, needing no more space than a conventional such door hinge.

[0039] FIG. 1 also shows that the door hinge is symmetrical with respect to a horizontal central symmetry plane perpendicular to the plane P extending in directions x and y, with the two adjusting elements 5 vertically symmetrically flanking this symmetry plane 2.

[0040] FIG. 2 is a longitudinal section through the first leaf assembly 1 in the area of the adjusting element 5. Here, each adjusting element 5 is a hex-socket gub screw that has a frustoconical tip bearing on a similarly angled face 10 of the outer housing part 13. Screwing in or out these screws 5 can shift the inner housing part 11 relative to the outer housing part 13 and thereby change the door position in the horizontal direction 7 parallel to a plane of the door 4 that itself extends parallel to the directions y and z. More particularly screwing both of the screws 5 in will move the link assembly 8a, 8b, 9 out, screwing them in will move it inward, and screwing one of them in and the other out will shift the link assembly 8a, 8b, 9 vertically relative to the inner housing part 11 since the two faces 10 extend at about 90° to each other. Movement of the inner housing part 11 away from the outer housing part 13 to the right as shown in FIG. 2 is limited by headed screws 12 whose shafts pass with clearance through the inner part 11, whose heads bear inward on the inner part 11, and that are threaded into the inner part 11.

[0041] The screwing in and unscrewing of the adjusting element 5 changes to a certain extent also the depth of engagement of the adjusting elements 5 in the associated recesses 6. The projection of the adjusting elements 5 with respect to the first leaf assembly 1 is however so selected, that the length variation at the height setting is negligible. In the closed position, the depth of engagement of the adjusting element 5 in the recess 6 is typically between 4 mm and 20 mm. Although here the adjusting element 5 is a screw, alternatively it would be possible to use an adjusting spindle or eccentric mechanism for the same effect.

[0042] It is further noted that the adjusting elements 5 engage in the recesses 6 offcenter, that is not in the center, as shown in FIG. 3. Thereby is is noted that the adjusting element 5 is eccentric in the recess 6 but is always spaced from inner side walls of the respective recess to allow the door 4 to swing.