Door hinge and building door

Abstract

The invention relates to a door hinge with an at least six-axis joint arrangement (3), which is connected on a first side with 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 with a third and a fourth axis (20, 21) extending along the vertical direction (z). According to the invention, the second support and fastening arrangement (6) has two separate support and fastening sections (12) which are not directly connected but rather connected via the third and fourth axis (20, 21), and which are designed to be arranged with a rear fastening surface (15) directly on a door or frame surface.

Description

[0001] The invention relates to a door hinge with an at least six-axis hinge arrangement, which is connected on a first side with 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 with 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 with a door frame, a door leaf, and at least two of the previously described door hinges.

[0002] The door hinge preferably has six and, if necessary, seven axes. Such door hinges are often designed for concealed installation, with the two support and fastening assemblies being mounted on the narrow side of a door leaf and the reveal side of a door frame. In the closed position, the door hinge is then not visible, or at most only slightly visible, through a lateral gap between the door leaf and the door frame. Such door hinges then allow for a particularly attractive design of building doors, and in particular interior doors. However, their use on exterior doors is also conceivable in principle. Such door hinges are also referred to as concealed door hinges or concealed door hinges.

[0003] The hinge is suitable for all types of interior doors, and its concealed design makes it particularly suitable for use in high-end construction projects. These hinges are also referred to as project hinges.

[0004] Door hinges of this type 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, a degree of freedom arises 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 exclusively provided on all axes.

[0006] For ease of installation, a shallow installation depth is often desired for the support and fastening arrangement on the frame side. Depending on their design, door frames may only provide a shallow installation depth, for example, if they are adjacent to masonry or similar structures.

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

[0008] The present invention is based on the object of providing a door hinge of this type that can be manufactured particularly compactly and with minimal material usage, yet still exhibits good functional properties. Furthermore, a building door with at least two, and preferably exactly two, corresponding door hinges is to be provided.

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

[0010] Starting from a generic door hinge, the invention accordingly provides that the second support and fastening arrangement has two support and fastening sections which are separate from one another and are not connected directly but via the third and fourth axis 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 assembly, specifically designed for installation on the frame surface, therefore dispenses with a continuous receiving body for the door hinge itself. Instead, the two support and fastening sections are manufactured as separate components, which are preferably mounted exclusively above or below the hinge assembly in the vertical direction.

[0012] Unlike known inserts or the like, the two separate support and fastening sections are also designed to be arranged with their rear fastening surface directly on the door surface or, preferably, the frame surface. The fastening surface can be essentially flat, but a ridge and / or at least one centering pin can also be provided.

[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 supporting 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 for the third and fourth axes, or the pins forming the axes, to be pressed into the associated axes receptacles of the support and fastening sections or fixed in some other way. Pressing can be achieved, for example, by the third and fourth axes having an oversize and / or a knurling and / or other contouring compared to the associated axes receptacles.

[0015] In order to achieve further fixation via the material of the adjacent door or frame surface in the assembled state, the rear fastening surface can optionally be designed with the previously described ribbing and / or at least one centering pin.

[0016] A 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, particularly in the vertical direction.

[0017] If stabilization or fixation 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 predetermined by the centering pins. Especially within the scope of such a design, it is readily possible for the support and fastening sections to each have exactly one opening for a fastening device. However, a design with only one fastening device is also possible in principle without the provision of centering pins.

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

[0019] Since the supporting and fastening sections are preferably located completely above or completely below the hinge assembly in the vertical direction, the hinge assembly, when installed, borders directly on the underlying door or frame surface via a gap. This also means that by minimizing this distance, the installation height perpendicular to the vertical direction can be further minimized.

[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 of, for example, between 15 mm and 40 mm. The height of the support and fastening sections along the vertical direction can be, for example, between 15 mm and 40 mm.

[0021] In order to ensure high stability in the assembled state and a simple, compact design, according to a preferred embodiment of the invention, 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 fastening arrangement can be adjustable. Adjustment can be provided, for example, through elongated holes in the receiving body. Such adjustment can then be made in a vertical or horizontal direction.

[0023] For further adjustment, the hinge assembly on the first support and fastening assembly can also be supported with two inserts or a single insert, in which case the inserts or the insert can be adjusted relative to the support body. This enables adjustment in a second horizontal direction, which runs along the width of the door leaf when the door is closed. The door leaf can then be adjusted laterally within the frame during adjustment, for example, to set the same 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 fastening area is then plate-shaped or essentially plate-shaped. In deviation from the plate shape, the rear

[0026] For example, the previously described knurling and / or at least one centering pin may be provided on the fastening surface.

[0027] The thickness of the mounting area can, for example, be between 2.5 mm and 8 mm. If centering pins are provided, the thickness is more likely to be in the upper range of 5 mm to 8 mm. Without centering pins, or when determining the location outside the centering pins, the thickness is preferably 2.5 mm to 4.5 mm.

[0028] Within the scope of the invention, a particularly compact design is to be made possible in order to enable the arrangement of the door hinge in a narrow gap between the door frame and the door leaf, wherein preferably a milling either in a door leaf or preferably in the door frame can be dispensed with.

[0029] Against this background, according to a preferred embodiment of the invention, it is provided that in a closed position the first support and fastening arrangement and the second support and fastening arrangement form a stepped spacing gap, wherein the first support and fastening arrangement has a recess relative to a horizontal direction perpendicular to the spacing gap, into which recess the support and fastening sections of the second support and fastening arrangement engage with a projection. With respect to an imaginary center plane between the support and fastening arrangement, there is therefore an overlap or mutual engagement. For example, against this background it can be provided that the previously described support region 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.

[0030] 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 along the vertical direction over a greater overall height than the second support and fastening arrangement. The step of the cover plates can then be provided, for example, where the cover plates extend beyond the support and fastening sections of the second support and fastening arrangement in the vertical direction in the closed position.

[0031] According to a preferred embodiment of the invention, the joint arrangement is designed to be exactly six-axis.

[0032] It can be provided that the joint arrangement has a main arm, a first partial arm and a second partial arm. Preferably, the main arm is then connected to the first support and fastening arrangement so as to be rotatable on the first axis and displaceable along a guide track, and is only rotatably connected to the second support and fastening arrangement on the third axis. The first partial arm is only rotatably connected to the first support and fastening arrangement on the second axis, and is only rotatably connected to the main arm on a fifth axis extending along the vertical direction, and is only rotatably connected to the second partial arm on a sixth axis extending along the vertical direction. Furthermore, it is provided that the second partial arm is only rotatably connected to the second support and fastening arrangement on the fourth axis.

[0033] The support and fastening sections can, for example, be formed as metal castings. When manufactured using metal casting, the previously described axle mounts can also be slightly undersized or structured to allow for compression with the third and / or fourth axle.

[0034] In the context of the invention, the door hinge, despite its compact design, preferably enables a maximum opening angle of more than 160°, in particular approximately 180°.

[0035] The invention also relates to a building door comprising a door frame, a door leaf, and at least two, preferably exactly two, hinges configured 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.

[0036] In the building door, the door hinges are preferably arranged such that the first support and fastening assembly is inserted into a recess in a narrow side of the door leaf. The second support and fastening assembly of each door hinge is then placed on a reveal side of the door frame, so that the door hinges are at least substantially concealed when the door leaf is closed. The door leaf typically has a weight of between 15 kg and 120 kg, in particular between 20 kg and 80 kg, typical for building doors.

[0037] It is particularly preferred that the second support and fastening arrangement is fastened to partial surfaces of a flat, continuous reveal side of the door frame, so that no milling or the like is necessary.

[0038] However, the invention is not limited to such a configuration. For example, doors are known in which the door frame already has a flat milled recess, for example, to accommodate a flat hinge plate. To compensate for the milled recess that is essentially no longer required, a spacer plate or the like can be provided as an accessory, on which the support and fastening sections of the second support and fastening arrangement are then arranged.

[0039] They show: Fig. 1 a door hinge according to the invention in the mounted state with an open door, Fig. 2 the door hinge alone in a rear view in the open state, Fig. 3 a horizontal section through a closed door at half the height of the door hinge, Fig. 4 a section according to the Fig. 3 with an open door leaf, Fig. 5 a horizontal section with a closed door below a hinge arrangement of the door hinge, Fig. 6 a partial view of the door hinge in a longitudinal section along a vertical direction.

[0040] The Fig. 1 shows a section of a door in the area of ​​a door hinge that connects a door leaf 1 to a door frame 2. As explained in more detail below, the door hinge comprises a six-axis joint arrangement 3, which is attached to a door leaf 1 with a first support and fastening arrangement 4 and to a door frame 7 with a second support and fastening arrangement 6. The entire door comprises two of the illustrated door hinges.

[0041] Already from the Fig. 1 It can be seen that the first support and fastening arrangement 4 has a receiving body 8, wherein the joint arrangement 3 is held on the receiving body 8 via a one-piece insert 9. Furthermore, cover plates 10 are provided on the first support and fastening arrangement 4, which are arranged at the ends along a vertical direction z and each have a horizontally extending step 11.

[0042] Already in the Fig. 1 It can be seen that the second support and fastening arrangement 6 has two separate support and fastening sections 12, each of which is fastened to the door frame 2 with a screw 13.

[0043] The fastening is carried out on a flat, continuous reveal surface 14 of the door frame 2.

[0044] The Fig. 2 shows the opened door hinge without door leaf 1 and door frame 2 in a perspective rear view.

[0045] It can be seen that the support and fastening sections 12 are designed to be flat overall with a small overall thickness of, for example, between 5 mm and 16 mm, with a horizontally extending ribbing 16 and two centering pins 17 each provided on a rear fastening surface 15. Both the ribbing 16 and the centering pins 17 represent optional configurations provided for better fixation of the two support and fastening sections 12. According to the invention, no common connecting body of the second support and fastening arrangement 6 is provided.

[0046] The provision of two centering pins 17 can in particular also prevent the supporting and fastening sections 12 from rotating around the single screw 13.

[0047] Further details on the joint arrangement 3 can be found in particular in the Figuren 3 and 4 .

[0048] The joint arrangement is connected to the first support and fastening arrangement 4 by a first axis 18 and a second axis 19. Furthermore, the joint arrangement 3 is connected to the second support and fastening arrangement 6 by a third axis 20 and a fourth axis 21.

[0049] In particular, from a comparative analysis of the Fig. 1 with the Fig. 3 It can be seen that the joint arrangement 3 has a main arm 22, a first partial arm 23 and a second partial arm 24.

[0050] The main arm 22 is connected to the first support and fastening arrangement 4 so as to be rotatable on the first axis 18 and displaceable along a guide track 25, and to the second support and fastening arrangement 6 so as to be only rotatable on the third axis 20.

[0051] The first partial arm 23 is connected to the first support and fastening arrangement 4 at the second axis 19 for only rotational movement, to the main arm 22 at a fifth axis 26 for only rotational movement, and to the second partial arm 24 at a sixth axis 27 for only rotational movement. Furthermore, the second partial arm 24 is connected to the second support and fastening arrangement 6 at the fourth axis 21 for only rotational movement.

[0052] The joint arrangement 6 is thus designed with exactly six axes. All axes 18, 19, 20, 21, 26, 27 run along the vertical direction z.

[0053] The Fig. 4 shows a section according to the Fig. 3 with a fully opened door hinge, which allows an opening angle of 180°.

[0054] The Fig. 5 shows a horizontal section below the joint arrangement 3, so that the further details of the support and fastening sections 12, especially in combination with Fig. 1 and Fig. 2 become even clearer. Door leaf 1 is not shown for clarity.

[0055] 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.

[0056] As previously explained, the total thickness of the support and fastening sections 12 can be between 5 mm and 16 mm, with the support area 28 projecting outward relative to the fastening area 29 to provide sufficient space for accommodating the third and fourth axles 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.

[0057] Also in the interests of the simplest and most stable design and construction 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.

[0058] On the other hand, an adjustment can be provided on the first support and fastening arrangement 4. 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, when the screws 13 are not tightened, a certain adjustment is possible along the elongated holes 13.

[0059] Furthermore, the Fig. 1 indicated that the joint arrangement 3 is supported on the receiving body 8 via the insert 9, whereby an adjustment in the horizontal direction can be provided in a manner known per se. Fig. 3 For example, the lateral distance between door leaf 1 and door frame 2 can be adjusted via the visible gap 31.

[0060] With the previously described division of the support and fastening sections 12 into the support area 28 and the fastening area 29, the fastening area in particular has a thickness of between 2.5 mm and 8 mm.

[0061] In the illustrated embodiment with optional centering pins 17, these must also be taken into account when determining the thickness. With centering pins 17, the thickness is typically between 5 mm and 8 mm. Without centering pins 17, or when determining the thickness outside the centering pins 17, the thickness of the fastening area is, for example, between 2.5 mm and 4.5 mm.

[0062] Since one of the support and fastening sections 12 is arranged completely above and the other support and fastening section 12 is arranged completely below the joint arrangement 3, the joint arrangement 3 can also be immersed in 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, thereby achieving a particularly compact design.

[0063] Especially in the Fig. 5 It 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 spacing gap, wherein the first support and fastening arrangement 4 has, in relation to a horizontal direction perpendicular to the spacing gap, a recess 32 in some areas, into which the support area 28 of the associated support and fastening section 12 engages as a projection.

[0064] The first support and fastening arrangement 4 extends in the vertical direction beyond the second support and fastening arrangement 6. From a comparative analysis of the Figuren 1 and 2 It can be seen that the step 11 in cover plates 10 is intended to encompass the supporting and fastening sections 12 at the ends in a vertical direction, which can also make a further contribution to a particularly compact design.

[0065] The Fig. 6 finally 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 joint 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 joint arrangement 3 are not shown.

[0066] Also from the Fig. 6 the described shape of the support and fastening sections 12 with the support area 28 and the fastening area 29 can be seen particularly clearly.

[0067] 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 adjoining on both sides.

[0068] The third axis 20 and the fourth axis 21 can preferably be pressed into corresponding axis receptacles 34 to enable a play-free connection and to prevent the support and fastening sections 12 from becoming detached from the hinge assembly 3. It is particularly important that, with respect to the door hinge itself, the support and fastening sections 12 are connected exclusively via the third and fourth axis 20, 21, and only in the assembled state is an indirect connection added via the door frame 2 or, if necessary, a spacer plate or the like.

[0069] The support and fastening sections 12 can be designed, for example, as metal die-cast parts. A zinc die-casting, for example, is suitable.

[0070] Especially in the Fig. 3It can be seen that in the building door, the door 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, wherein the door hinges are essentially concealed when the door leaf 1 is closed.

[0071] The door leaf 1 typically weighs between 15 kg and 120 kg, in particular between 20 kg and 80 kg. The door hinge is designed in particular to have a load-bearing capacity of 80 kg.

Claims

1. Door hinge with an at least six-axis joint arrangement (3), which is connected on a first side with 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 with 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 support and fastening sections (12) which are separate from one another and are not connected directly but via the third and fourth axis (20, 21), which are designed to be arranged with a rear fastening surface (15) directly on a door or frame surface.

2. Door hinge according to claim 1, characterized in thatthe supporting and fastening sections (12) perpendicular to the vertical direction have a total thickness of between 5 mm and 16 mm and a width of between 15 mm and 40 mm.

3. Door hinge according to claim 1 or claim 2, characterized in that on the rear fastening surface (15) has a corrugation (16) and / or at least one centering pin (17).

4. Door hinge according to one of claims 1 to 3, characterized in that the supporting and fastening sections (12) each have exactly one opening for a fastening means.

5. Door hinge according to one of claims 1 to 4, characterized in 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 one of claims 1 to 5, characterized in thatthe support and fastening sections (12) each have a support area (28) for receiving the third and fourth axles (20, 21) and a preferably substantially plate-shaped fastening area (29).

7. Door hinge according to claim 6, characterized in that the fastening area (29) has a thickness between 2.5 mm and 8 mm.

8. Door hinge according to one of claims 1 to 7, characterized in that in a closed position, the first support and fastening arrangement (4) and the second support and fastening arrangement (6) form a stepped spacing gap, wherein the first support and fastening arrangement (4) has a recess (32) with respect to a horizontal direction perpendicular to the spacing gap, into which the support and fastening sections (12) of the second support and fastening arrangement (6) engage with a projection.

9. Door hinge according to one of 1 to 8, characterized in thatthe first supporting and fastening arrangement (4) has two cover plates (10) arranged at the ends along the vertical direction, each of which has a step (11).

10. Door hinge according to one of claims 1 to 9, characterized in 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 one of claims 1 to 10, characterized in that the first support and fastening arrangement (4) has at least one insert (9) which is adjustable relative to the receiving body (8) and which receives the first and second axles (18, 19).

12. Door hinge according to one of claims 1 to 11, characterized in that the joint arrangement (3) is designed exactly six-axis.

13. Door hinge according to claim 12, characterized in thatthe joint arrangement (3) has a main arm (22), a first partial arm (23) and a second partial arm (24), wherein the main arm (22) is connected to the first support and fastening arrangement (4) on the first axis (18) so as to be rotatable and displaceable along a guide track (25) and to the second support and fastening arrangement (6) on the third axis (20), wherein the first partial arm (23) is connected to the first support and fastening arrangement (4) on the second axis (19) so as to be rotatable, to the main arm (22) on a fifth axis (26) extending along the vertical direction (z), and 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 further connected to the second support and fastening arrangement on the fourth axis (21) so as to be rotatable (6) is connected.

14. Door hinge according to one of claims 1 to 13, characterized in that the supporting and fastening sections (12) are formed as metal castings.

15. Door hinge according to one of claims 1 to 14, characterized in that a maximum opening angle of 160° to 200°, especially 180°.

16. Building door with a door frame (2), a door leaf (1) and at least two door hinges according to one of claims 1 to 15.

17. Building door according to claim 16, characterized in that in the case 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 reveal 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 in thatthe 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 in that the second supporting and fastening arrangements are fastened to partial surfaces of a flat reveal surface (14) of the door frame (2).

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