Door hinge and building door

Abstract

Door hinge with a joint arrangement (3) with at least six axes, which is connected on a first side by a first and a second axis (18, 19) extending along a vertical direction (z) to a first support and fastening arrangement (4) with a receiving body (8) and on a second side by a third and a fourth axis (20, 21) extending along the vertical direction (z) to a second support and fastening arrangement (6), characterized in that the second support and fastening arrangement (6) has two separate support and fastening sections (12) which are not directly connected but connected via the third and fourth axis (20, 21) and which are designed to be arranged directly on a door or frame surface with a rear fastening surface (15).

Description

[0001] The invention relates to a door hinge with a joint arrangement comprising at least six axes, which is connected on a first side by a first and a second axis extending along a vertical direction to a first support and fastening arrangement with a receiving body, and on a second side by a third and a fourth axis extending along the vertical direction to a second support and fastening arrangement. The invention also relates to a building door comprising a door frame, a door leaf, and at least two of the door hinges described above.

[0002] The hinge preferably has six, and optionally seven, pivots. Such hinges are often designed for concealed installation, with the two bearing and mounting components being installed on the narrow side of a door leaf and on the jamb side of a door frame. In the closed position, the hinge is then either not visible or only minimally visible through a lateral gap between the door leaf and the door frame. These hinges allow for a particularly attractive design of building doors, especially interior doors. Their use on exterior doors is also conceivable. Such hinges are also known as concealed hinges or hidden door hinges.

[0003] This hinge is suitable for all types of interior doors, and its concealed design makes it particularly suitable for high-end construction projects. These types of hinges are also commonly referred to as commercial or industrial hinges.

[0004] Types of door hinges are known, for example, from DE 10 2021 126 914 B3 and WO 2022 / 020867A1 in a six-axis configuration. In these six-axis configurations, one degree of freedom results from the fact that one of the axes is movable along a guide track. This guide track can be either straight or curved.

[0005] EP 3 683 391 A1 discloses a seven-axis design. In a seven-axis design, a scissor-like movement occurs in the broadest sense, with rotation being the only movement provided on all axes.

[0006] For ease of installation, a shallow installation depth is often desired for the support and fastening elements on the door frame. In particular, door frames may only offer a shallow installation depth depending on their design, for example, if they are connected to masonry or similar structures.

[0007] Against this background, WO 2022 / 020867 A1 already discloses a door hinge with a six-axis pivot arrangement, which is significantly asymmetrical with regard to its installation depth in the door leaf and the door frame. The first support and fastening assembly has a possibly multi-part receiving body, which can also be adjustable. A guide track for the pivot arrangement is formed in the receiving body. A receiving body is also provided for the second support and fastening assembly, but this one is comparatively flat. This makes it possible to mount the frame-side receiving body onto the jamb side of a door frame without milling (see Fig. 5) The corresponding receiving body can then also form a stop for the joint arrangement.

[0008] The present invention aims to provide a generic door hinge that can be manufactured in a particularly compact form with minimal material usage, yet still exhibits good functional properties. Furthermore, the invention also aims to provide a building door with at least two, and preferably exactly two, corresponding door hinges.

[0009] The subject matter of the invention and the solution to the problem are a door hinge according to claim 1 and a building door according to claim 16.

[0010] Based on a generic door hinge, the invention provides that the second support and fastening arrangement has two separate support and fastening sections that are not directly connected, but rather via the third and fourth axes, and which are designed to be arranged with a rear fastening surface directly on a door or frame surface.

[0011] The second support and fastening arrangement, intended specifically for mounting on the frame surface, therefore does not include a continuous receiving body for the hinge itself. Instead, the two support and fastening sections are manufactured as separate components, preferably positioned exclusively above and below the hinge assembly in the vertical direction.

[0012] Unlike known inserts or similar devices, the two separate support and mounting sections are designed to be positioned directly on the door surface or, preferably, the frame surface with their rear mounting surface. The mounting surface can be essentially flat, but may also include a grooved surface and / or at least a centering pin.

[0013] Within the scope of the invention, it is accepted that, apart from the connection via the third and fourth axes, no further connection is provided between the two support and fastening sections of the door hinge itself. However, the third and fourth axes already provide a certain degree of support in two separate areas.

[0014] It is also possible that the third and fourth axes, or the pins forming the axes, are pressed into or otherwise fixed in the corresponding axle receptacles of the support and fastening sections. Pressing can be achieved, for example, by the third and fourth axes having an interference fit and / or knurling and / or other contouring relative to the corresponding axle receptacles.

[0015] In order to achieve further fixation via the material of the adjacent door or frame surface when mounted, the rear mounting surface can optionally be designed with the previously described ribbing and / or at least a centering pin.

[0016] The ribbing can run horizontally, and then, during installation, dig into the adjacent material of the door or frame surface to a certain extent, thereby achieving stabilization, especially in the vertical direction.

[0017] If stabilization or fixing via centering pins is provided, the support and fastening sections preferably have two centering pins, so that the position of the support and fastening sections is already determined by the centering pins. Particularly in such a design, it is readily possible for the support and fastening sections to each have exactly one opening for a fastening element. However, a design with only one fastening element is also fundamentally possible without providing centering pins.

[0018] According to one embodiment of the invention, the support and fastening sections can also have two openings for a fastening element, so that when two fastening elements are used, better fixation is achieved and, for example, twisting is prevented. Since – as explained further below – the support and fastening sections are preferably designed to be very compact, an embodiment with exactly one opening for a fastening element on each support and fastening section is particularly preferred, whereby, as a rule, at least no more than two openings for fastening elements are provided.

[0019] Since the load-bearing and fastening sections are preferably located entirely above or entirely below the hinge assembly in the vertical direction, the hinge assembly, when installed, abuts directly against the underlying door or frame surface via a gap. This also means that by minimizing this gap, the overall height perpendicular to the vertical direction can be further reduced.

[0020] According to a preferred embodiment of the invention, the support and fastening sections perpendicular to the vertical direction have a total thickness of between only 5 mm and 16 mm, with a width that can be, for example, between 15 mm and 40 mm. The height of the support and fastening sections along the vertical direction can, for example, be between 15 mm and 40 mm.

[0021] In order to ensure high stability in the assembled state and a simple, compact design, a preferred embodiment of the invention also provides that the second support and fastening arrangement is designed for a rigid, non-adjustable arrangement on the door or frame surface.

[0022] In contrast, the first support and mounting arrangement can be adjustable. Adjustment can be achieved, for example, through elongated holes in the mounting body. Such adjustment can then be made vertically or horizontally.

[0023] For further adjustment, the hinge assembly on the first support and mounting assembly can also be supported by two inserts or a single, shared insert, whereby the inserts can be adjustable relative to the mounting body. This allows, in particular, adjustment in a second horizontal direction, which, when the door is closed, runs along the width of the door leaf. The door leaf can then be adjusted laterally within the frame to, for example, ensure an equal gap on both sides of the door.

[0024] According to a preferred embodiment, the support and fastening sections each have a support area for receiving the third and fourth axles and a preferably substantially plate-shaped fastening area. The support area can then have a greater thickness to form axle mounts.

[0025] The mounting area is then plate-shaped or essentially plate-shaped. As an exception to the plate shape, the rear mounting surface may, for example, feature the previously described knurling and / or at least a centering pin.

[0026] The thickness of the mounting area can, for example, range from 2.5 mm to 8 mm. If centering pins are provided, the thickness is then more likely to be in the upper range of 5 mm to 8 mm. Without centering pins, or when positioned outside of centering pins, the thickness is preferably 2.5 mm to 4.5 mm.

[0027] The invention aims to enable a particularly compact design in order to allow the arrangement of the door hinge in a narrow gap between the door frame and the door leaf, preferably eliminating the need for milling either on the door leaf or preferably on the door frame.

[0028] Against this background, a preferred embodiment of the invention provides that, in a closed position, the first support and fastening arrangement and the second support and fastening arrangement form a stepped gap, wherein the first support and fastening arrangement has a recess perpendicular to the gap with respect to a horizontal direction, into which the support and fastening sections of the second support and fastening arrangement engage with a projection. With respect to an imaginary median plane between the support and fastening arrangements, there is thus an overlap or mutual engagement. For example, it can be provided that the previously described support area of ​​the support and fastening sections forms the projection in order to then be able to arrange the third and fourth axes in a particularly compact manner.

[0029] Furthermore, it can also be provided that the first support and fastening arrangement has cover plates arranged along the vertical direction, each of which has at least one step. For example, it can be provided that the first support and fastening arrangement extends over a greater overall height along the vertical direction than the second support and fastening arrangement. The step of the cover plates can then be provided, for example, where the cover plates, in the closed position, extend vertically beyond the support and fastening sections of the second support and fastening arrangement.

[0030] According to a preferred embodiment of the invention, the joint arrangement is designed to be exactly six-axis.

[0031] The joint arrangement may include a main arm, a first sub-arm, and a second sub-arm. Preferably, the main arm is rotatably connected to the first support and fastening arrangement along a guide track on the first axis and is slidably connected to the second support and fastening arrangement along the third axis. The first sub-arm is rotatably connected to the first support and fastening arrangement along the second axis, and to the main arm along a fifth axis extending vertically, and to the second sub-arm along a sixth axis extending vertically. Furthermore, the second sub-arm is rotatably connected to the second support and fastening arrangement along the fourth axis.

[0032] The load-bearing and mounting sections can, for example, be formed as metal castings. When manufacturing by metal casting, a slight undersize or a texture can be incorporated during the shaping of the axle mounts described above, in order to facilitate press-fitting with the third and / or fourth axle.

[0033] Within the scope of the invention, the door hinge, despite its compact design, preferably allows a maximum opening angle of more than 160°, in particular about 180°.

[0034] The invention also relates to a building door comprising a door frame, a door leaf, and at least two, preferably exactly two, hinges, which are designed as described above. The building door is preferably an interior door, although the hinge according to the invention can also be suitable for an exterior door.

[0035] In a building door, the hinges are preferably arranged such that the first support and mounting assembly is inserted into a recess in a narrow side of the door leaf. The second support and mounting assembly of each hinge is then mounted on a jamb side of the door frame, so that the hinges are at least substantially concealed when the door leaf is closed. The door leaf typically has a weight typical for building doors, between 15 kg and 120 kg, and particularly between 20 kg and 80 kg.

[0036] It is particularly preferred that the second support and fastening arrangement is attached to partial surfaces of a flat, continuous reveal side of the door frame, so that no milling or the like is necessary.

[0037] However, the invention is not limited to such a design. For example, doors are known in which the door frame already has a flat milling to accommodate, for instance, a flat hinge flap. To compensate for the resulting, essentially unnecessary, milling, a spacer plate or similar component can be provided as an accessory, on which the support and fastening sections of the second support and fastening arrangement are then mounted.

[0038] They show: Fig. 1 a door hinge according to the invention in the mounted state with a door open, Fig. 2 the door hinge alone in a rear view in the open position, Fig. 3 a horizontal section through a closed door at half the height of the hinge, Fig. 4 a cut according to the Fig. 3 with one door leaf open, Fig. 5 a horizontal section of a closed door below a hinge assembly of the door hinge, Fig. 6 a partial view of the door hinge in a longitudinal section along a vertical direction.

[0039] The Fig. Figure 1 shows a section of a door in the area of ​​a hinge connecting a door leaf 1 to a door frame 2. As explained in more detail below, the hinge comprises a six-axis joint assembly 3, which is attached to a door leaf 1 by a first support and fastening assembly 4 and to a door frame 7 by a second support and fastening assembly 6. The entire door includes two of the hinges shown.

[0040] Already from the Fig. Figure 1 shows that the first support and fastening arrangement 4 has a receiving body 8, wherein the hinge arrangement 3 is held on the receiving body 8 by means of a one-piece insert 9. Furthermore, cover plates 10 are provided at the ends of the first support and fastening arrangement 4 along a vertical direction z, each of which has a horizontally extending step 11.

[0041] Already in Fig. 1 can be seen that the second support and fastening arrangement 6 has two separate support and fastening sections 12, each of which is attached to the door frame 2 with a screw 13.

[0042] The fastening is specifically carried out on a flat, continuous reveal surface 14 of the door frame 2.

[0043] The Fig. Figure 2 shows the open door hinge without door leaf 1 and door frame 2 in a perspective rear view.

[0044] It can be seen that the support and fastening sections 12 are generally flat with a low overall thickness of, for example, 5 mm to 16 mm, with a horizontally extending knurling 16 and two centering pins 17 provided on a rear fastening surface 15. Both the knurling 16 and the centering pins 17 are optional features provided for improved fixation of the two support and fastening sections 12. According to the invention, no common connecting body is provided for the second support and fastening arrangement 6.

[0045] The provision of two centering pins 17 can in particular also prevent the support and fastening sections 12 from twisting around the single screw 13.

[0046] Further details regarding joint arrangement 3 can be derived in particular from the Fig. 3 and Fig. 4.

[0047] The joint assembly is connected to the first support and fastening assembly 4 via a first axis 18 and a second axis 19. Furthermore, the joint assembly 3 is connected to the second support and fastening assembly 6 via a third axis 20 and a fourth axis 21.

[0048] In particular, from a comparative analysis of Fig. 1 with the Fig. Specifically, it follows that the joint arrangement 3 has a main arm 22, a first partial arm 23 and a second partial arm 24.

[0049] The main arm 22 is rotatably connected to the first axis 18 and displaceably along a guide track 25 to the first support and fastening arrangement 4 and is only rotatably connected to the second support and fastening arrangement 6 to the third axis 20.

[0050] The first sub-arm 23 is rotatably connected to the first support and fastening arrangement 4 at the second axis 19, rotatably connected to the main arm 22 at a fifth axis 26, and rotatably connected to the second sub-arm 24 at a sixth axis 27. Furthermore, the second sub-arm 24 is rotatably connected to the second support and fastening arrangement 6 at the fourth axis 21.

[0051] The joint arrangement 6 is therefore designed with exactly six axes. All axes 18, 19, 20, 21, 26, 27 run along the vertical direction z.

[0052] The Fig. 4 shows a section according to the Fig. 3 with a fully open door hinge, which allows an opening angle of 180°.

[0053] The Fig. Figure 5 shows a horizontal section below the joint arrangement 3, so that further details of the load-bearing and fastening sections 12, especially in combination with Fig. 1 and Fig. 2 will become even clearer. Door leaf 1 is not shown for better understanding.

[0054] It can be seen that the support and fastening sections 12 each have a support area 28 for receiving the third and fourth axles 20, 21 and a substantially plate-shaped fastening area 29.

[0055] As previously explained, the total thickness of the support and fastening sections 12 can range from 5 mm to 16 mm, with the support area 28 projecting outwards relative to the fastening area 29 to provide sufficient space for the third and fourth axes 20, 21. The support and fastening sections 12 can, for example, have a width between 15 mm and 40 mm and a height along the vertical direction between 15 mm and 14 mm.

[0056] Also in the interest of a design and construction that is as simple and stable as possible, the second support and fastening arrangement 6 with the two separate support and fastening sections 12 is designed for a rigid, non-adjustable arrangement on the door frame 2.

[0057] In contrast, the first support and fastening arrangement 4 may be adjustable. For example, in the Fig. 2. It can be seen that the screws 13 on the first support and fastening arrangement are arranged in elongated holes 30 that extend along the vertical direction z. Accordingly, a certain degree of adjustment is possible along the elongated holes 13 when the screws 13 are not tightened.

[0058] Furthermore, in the Fig. Figure 1 indicates that the joint arrangement 3 is supported on the receiving body 8 via the insert 9, whereby an adjustment in the horizontal direction may be provided for this purpose in a manner known per se. With reference to the in Fig. For example, the 3 visible gap 31 can be used to adjust the lateral distance between door leaf 1 and door frame 2.

[0059] With the previously described division of the load-bearing and fastening sections 12 into the load-bearing area 28 and the fastening area 29, the fastening area in particular has a thickness between 2.5 mm and 8 mm.

[0060] In the illustrated embodiment with optional centering pins 17, these must also be taken into account when determining the thickness, whereby with centering pins 17 the thickness is typically between 5 mm and 8 mm. Without centering pins 17 or when determining the thickness outside of the centering pins 17, the thickness of the fastening area is, for example, between 2.5 mm and 4.5 mm.

[0061] Since one of the support and fastening sections 12 is located entirely above and the other support and fastening section 12 is located entirely below the joint assembly 3, the joint assembly 3 can also extend into the area between the support and fastening sections 12, so that according to the Fig. 3 this area can also be used optimally for the movement of the joint arrangement 3, resulting in a particularly compact design.

[0062] Especially in Fig. 5 can be seen that in a closed position the first support and fastening arrangement 4 and the second support and fastening arrangement 6 form a stepped gap, wherein the first support and fastening arrangement 4 has a recess 32 in a horizontal direction perpendicular to the gap, into which the support area 28 of the associated support and fastening section 12 engages as a projection.

[0063] The first support and fastening arrangement 4 extends vertically beyond the second support and fastening arrangement 6. From a comparative analysis of the Fig. 1 and Fig. 2 it can be seen that the step 11 in cover plates 10 is intended to grip the support and fastening sections 12 at the end in a vertical direction, which also makes a further contribution to a particularly compact design.

[0064] The Fig. Figure 6 shows a longitudinal section along the vertical direction z through the second support and fastening arrangement 6 with the two support and fastening sections 12 and the hinge arrangement 3 held thereon. For the sake of clarity, various parts, in particular the door leaf 1, the door frame 2, the first support and fastening arrangement 4 and part of the hinge arrangement 3, are not shown.

[0065] Also from the Fig. Figure 6 shows the described shape of the support and fastening sections 12 with the support area 28 and the fastening area 29 as being particularly clear.

[0066] The longitudinal section shown runs through the fourth axis 21. It can be seen that the fourth axis 21 extends through sleeves 33, which are arranged with a collar between the joint arrangement 3 and the supporting and fastening sections 12 on both sides.

[0067] The third axis 20 and the fourth axis 21 can preferably be pressed into corresponding axis receptacles 34 to enable a backlash-free connection and to prevent the support and fastening sections 12 from detaching from the hinge assembly 3. It is particularly important that, with respect to the hinge itself, the support and fastening sections 12 are connected exclusively via the third and fourth axes 20, 21, and that only in the assembled state is an indirect connection added via the door frame 2 or, if applicable, a spacer plate or the like.

[0068] The support and fastening sections 12 can, for example, be made of die-cast metal parts. Zinc die-casting is a suitable material.

[0069] Especially in Fig.Figure 3 shows that in the building door the hinges are each inserted with the first support and fastening arrangement 4 into a recess 35 in a narrow side of the door leaf 1, whereby the hinges are essentially concealed when the door leaf 1 is closed.

[0070] The door leaf 1 typically weighs between 15 kg and 120 kg, particularly between 20 kg and 80 kg. The door hinge is specifically designed to have a load-bearing capacity of 80 kg. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2021 126 914 B3 WO 2022 / 020867A1 [0004, 0007] EP 3 683 391 A1

[0005]

Claims

[1] Door hinge with a joint arrangement (3) with at least six axes, which is connected on a first side by a first and a second axis (18, 19) extending along a vertical direction (z) to a first support and fastening arrangement (4) with a receiving body (8) and on a second side by a third and a fourth axis (20, 21) extending along the vertical direction (z) to a second support and fastening arrangement (6), characterized by , that the second support and fastening arrangement (6) has two separate support and fastening sections (12) which are not directly connected but via the third and fourth axes (20, 21) and which are designed to be arranged directly on a door or frame surface with a rear fastening surface (15). [2] Door hinge according to claim 1, characterized by, that the load-bearing and fastening sections (12) perpendicular to the vertical direction have a total thickness between 5 mm and 16 mm and a width between 15 mm and 40 mm. [3] Door hinge according to claim 1 or claim 2, characterized by that the rear mounting surface (15) has a knurling (16) and / or at least a centering pin (17). [4] Door hinge according to one of claims 1 to 3, characterized by , that the support and fastening sections (12) each have exactly one opening for a fastening device. [5] Door hinge according to any one of claims 1 to 4, characterized by , that the second support and fastening arrangement (6) is designed for a rigid, non-adjustable arrangement on the door or frame surface. [6] Door hinge according to any one of claims 1 to 5, characterized by, that the support and fastening sections (12) each have a support area (28) for receiving the third and fourth axis (20, 21) and a preferably substantially plate-shaped fastening area (29). [7] Door hinge according to claim 6, characterized by , that the fastening area (29) has a thickness between 2.5 mm and 8 mm. [8] Door hinge according to any one of claims 1 to 7, characterized by , that in a closed position the first support and fastening arrangement (4) and the second support and fastening arrangement (6) form a stepped gap, wherein the first support and fastening arrangement (4) has a recess (32) with respect to a horizontal direction perpendicular to the gap, into which the support and fastening sections (12) of the second support and fastening arrangement (6) engage with a projection. [9] Hinge according to one of 1 to 8, characterized by, that the first support and fastening arrangement (4) has two end-mounted cover plates (10) arranged along the vertical direction, each of which has a step (11). [10] Door hinge according to any one of claims 1 to 9, characterized by , that the receiving body (8) of the first support and fastening arrangement (4) has elongated holes (30) for screws (13) for fastening. [11] Door hinge according to any one of claims 1 to 10, characterized by , that the first support and fastening arrangement (4) has at least one insert (9) adjustable relative to the receiving body (8), which accommodates the first and second axes (18, 19). [12] Door hinge according to any one of claims 1 to 11, characterized by , that the joint arrangement (3) is designed to be exactly six-axis. [13] Door hinge according to claim 12, characterized bythat the joint arrangement (3) comprises a main arm (22), a first partial arm (23) and a second partial arm (24), wherein the main arm (22) is rotatably connected to the first support and fastening arrangement (4) on the first axis (18) and displaceably along a guide track (25), and is rotatably connected to the second support and fastening arrangement (6) on the third axis (20), wherein the first partial arm (23) is rotatably connected to the first support and fastening arrangement (4) on the second axis (19), rotatably connected to the main arm (22) on a fifth axis (26) extending along the vertical direction (z), and rotatably connected to the second partial arm (24) on a sixth axis (27) extending along the vertical direction (z), and wherein the second partial arm (24) is rotatably connected to the second support and fastening arrangement on the fourth axis (21). (6) is connected. [14] Door hinge according to any one of claims 1 to 13, characterized by , that the load-bearing and fastening sections (12) are formed as metal castings. [15] Door hinge according to any one of claims 1 to 14, characterized by , that a maximum opening angle is between 160° and 200°, especially between 180°. [16] Building door comprising a door frame (2), a door leaf (1) and at least two hinges according to any one of claims 1 to 15. [17] Building door according to claim 16, characterized by , that in each of the door hinges the first support and fastening arrangement (4) is inserted into a recess (35) in a narrow side of the door leaf (1), wherein the second support and fastening arrangement (6) is placed on a jamb surface (14) of the door frame (2), so that the door hinges are essentially concealed when the door leaf (1) is closed. [18] Building door according to claim 16 or 17, characterized by, that the door leaf (1) has a weight between 15 kg and 120 kg, in particular between 20 kg and 80 kg. [19] Building door according to one of claims 16 to 18, characterized by , that the second support and fastening arrangements are attached to partial surfaces of a flat reveal surface (14) of the door frame (2).

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