DOOR HINGE

Abstract

A door hinge has first and second leaf assemblies. The first assembly is formed with a longitudinal guide groove. First and second links are connected to each other for relative pivoting about a vertical axis. The first link is pivoted in a longitudinally displaceable slide in the groove. This slide has a length longitudinally of the guide groove and a width transversely of the guide groove. The ratio of the length to the width of the slide is at least 2:1.

Claims

1. A door hinge comprising: first and second leaf assemblies, the first assembly being formed with a longitudinal guide groove; first and second links connected to each other for relative pivoting about a vertical axis; a longitudinally displaceable slide in the groove, the first link being pivoted in the slide, the slide having a length longitudinally of the guide groove and a width transversely of the guide groove, the ratio of the length to the width of the slide being at least 2:1.

2. The door hinge according to claim 1, wherein the ratio of the length to the width of the slide is between 2:1 and 3:1.

3. The door hinge according to claim 1, wherein the slide has a length of 8 to 16 mm.

4. The door hinge according to claim 1, wherein the slide has a pivot seat for pivoting the first link, the pivot seat being offset from a center of the slide relative to the slide length.

5. The door hinge according to claim 4, wherein the pivot seat is offset toward a first end of the slide , the first end being adjacent a first guide groove end in a closed position of the door hinge.

6. The door hinge according to claim 1, wherein the guide groove has a length between 20 and 40 mm.

7. The door hinge according to claim 1, wherein the guide groove has a widened section extending only partly longitudinally of the guide groove and that is formed in the widened section with a larger groove width than in sections offset from the widened section, the slide being engaged in the guide groove with projecting wings that engage in the widened section.

8. The door hinge according to claim 7, wherein the widened section extends over between 45 and 75% of the groove length..

9. The door hinge according to claim 8, wherein the widened section extends only over part of a groove height.

10. The door hinge according to claim 7, wherein the laterally projecting wings are provided only in sections along the length of the slide.

11. The door hinge according to claim 1, wherein the guide groove is closed at both ends.

12. The door hinge according to claim 1, wherein the guide groove is straight.

13. The door hinge according to claim 1 wherein the guide groove is formed in a mount that is detachably fastened to a housing of the first leaf assembly.

14. The door hinge according to claim 1, wherein the second hinge link is longitudinally displaceable and rotatably mounted on the second leaf assembly.

15. The door hinge according to claim 1, wherein the second hinge link is only pivotal on the second leaf assembly, the second hinge link being formed from two link parts that pivot on each other.

16. The door hinge according to claim 1, wherein the leaf assemblies fit into mortises in the edge of a door panel and in a door frame.

17. In combination with the door hinge according to claim 1: a door with a door panel and a door frame, the second leaf assembly being set in a mortise in the door frame and the first leaf assembly in a mortise in an edge of the door panel.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0030] 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:

[0031] FIGS. 1A and 1B shows a door with a door hinge according to the invention in a closed position and an open position, respectively;

[0032] FIG. 2 is an isometric view of the door hinge according to the invention in the fully open position;

[0033] FIG. 3 is a detailed view of the door hinge according to FIG. 2 with only the first hinge link and the mounts shown;

[0034] FIGS. 4A and 4B are detailed view of the lower mount according to the FIG. 3, with the slide shown in an open position and a closed position; and

[0035] FIG. 5 is a sectional view through the mount and the slide in the position of FIG. 4B.

SPECIFIC DESCRIPTION OF THE INVENTION

[0036] FIG. 1A shows a door in a closed position, while FIG. 1B shows the door in an open position in which the door panel 2 is rotated 180° relative to a door frame 1. A door hinge 3 pivotally supports the door panel 2 relative to the door frame 1. For this purpose, the door hinge 3 has a first leaf assembly 4 that fits in a mortise in the edge of the door panel 2. In addition, a second leaf assembly 5 of the door hinge 3 fits in a mortise in the reveal of the door frame 1.

[0037] Due to such a design, the door hinge 3 is not visible from the outside in a closed position of the door and thus cannot detract from the appearance of the door. However, it is not necessary to recess the leaf assemblies 4 and 5 in the door frame 1 and the door panel 2 in order to achieve the concealed effect. The hinge arrangement must also be designed to allow the door panel 1 to pivot without the pivot axle being outside the door plane.

[0038] The exact design of the door hinge 3 is shown in more detail in FIG. 2. First and second hinge links 6 and 7a, 7b are rotatably interconnected by a pin 16 at the vertical axis Z of the pin 16 and enable the two leaf assemblies 4 and 5 to pivot relative to one another. The second hinge link 7a, 7b is furthermore formed by two link parts 7a, 7b that are pivoted on each other, with the first link part 7a also pivoted in the first leaf assembly 4 and the second link part 7b in the second leaf assembly 5.

[0039] In contrast to the second hinge link 7a, 7b, the first hinge link 6 is formed as a single piece and thus does not consist of parts that can pivot relative to each other. In addition, the first link 6 is only pivotal in the second leaf assembly 5 but is both pivotal and longitudinally movable in the first leaf assembly 4. The precise design of such a bearing assembly can be seen in particular in FIG. 3 that shows only the first hinge link 6 and the mounts 8 that support the first hinge link 6 in the first leaf assembly 4.

[0040] The mounts 8 are manufactured separately from and are detachably connected to a housing 9 of the first leaf assembly. Via this detachable fastening, the mounts 8 and thus also the position of the first hinge link 6 can be adjusted relative to the housing 9, so that adjustment of the position of the door panel 2 within the door frame 1 is possible after assembly. Furthermore, such a separate embodiment of the mounts 8 also makes it possible to easily insert a hinge pin for connecting the mounts 8 to the first hinge link 6 such that the assembly shown in FIG. 3 can then be fitted with the second hinge link 7a, 7b on the first leaf part 4.

[0041] FIG. 3 shows how the mounts 8 each have a longitudinal groove 10 in which moves a slide 11 that carries the pivot of the first hinge link 6. Here, the mounts 8 are formed as zinc die-cast parts, so that the guide grooves 10 are formed during manufacture of the mount 8 as is a pivot seat 12 for the second hinge link 7a, 7b.

[0042] The design of the mounts 8 with the guide groove 10 as well as the slide 11 in the guide groove 10 can be taken in particular from FIGS. 4A, 4B, and 5. FIG. 4A shows the mount 8 in the open position and FIG. 4B shows the mount 8 in the closed position. Here, FIGS. 4A and 4B differ essentially in the position of the slide 11 in that according to FIG. 4B an inner end 11a of the slide 11 is at an inner groove end 10a and according to FIG. 4A the slide 11 has its outer end 11b at an outer groove end 10b.

[0043] According to the illustrated embodiment, the guide groove 10 has a length L.sub.1 of between 20 and 40 mm. A length F.sub.1 of the slide 11 is between 8 and 18 mm. The width F.sub.2 of the guide groove 10 is between 3 and 9 mm and corresponds approximately to a width B.sub.1 of the slide 11, the slide 11 having a slightly smaller width in order to slide without jamming in the guide groove 10. A depth T.sub.1 of the guide groove 10 is between 3 and 8 mm, the slide 11 being designed in such a way that it is at least flush with the surrounding surfaces of the mount 8 with respect to the guide groove and preferably projects to a small extent with respect thereto.

[0044] Overall, the slide 11 thus is elongated with a length F.sub.1 extending in the longitudinal direction of the groove and a width F.sub.2 extending in the transverse width direction of the guide groove 10, the ratio of the length F.sub.1 to the width F.sub.2 of the slide 11 being at least 2:1. In addition, a pivot seat 13 is formed in the slide 11 where the slide 11 is pivotally connected to the first hinge link 6 by a separate pivot pin.

[0045] This pivot seat 13 is offset transversely relative to the length F, of the slide 11 and also longitudinally from the first end 11a of the slide 11.

[0046] FIGS. 3 to 5 further show that the guide groove 10 is of T-section and for this purpose has a widened outer section 14 of a larger groove width B.sub.1, B.sub.2 than in sections outside the widened section, and the slide 11 in the guide groove 10 has laterally projecting wings 15 that engage in the widened section 14.

[0047] In this case, the widened section 14 extends only over part of the guide groove 11, a length L.sub.2 of the widened section 14 being between 45 and 75% of the groove length L.sub.1.

[0048] Furthermore, the widened section 14 extends only over a range of the groove height T.sub.1, and the ratio of the height T.sub.2 of the widened section 14 to the groove height T.sub.1 corresponds to between 0.1 and 0.2, preferably between 0.12 and 0.18.

[0049] In addition, as shown in FIGS. 1A and 1B, the second link 6 is only pivotal in the mounts 8 of the second leaf assembly 5 so that only the first leaf assembly 4 is formed with guide grooves 10. It is understood that within the scope of the invention, an embodiment is also possible in which the second link 6 is longitudinally displaceable in the first leaf assembly 5, in which case an two-part design of the second link 7a, 7b is not required.