DOOR HINGE WITH elongated guide rail

Description

[0001] The present invention relates to a door hinge with a first and second fastening part and with at least a first and a second hinge bracket, wherein the hinge brackets are rotatably connected to each other about a vertical axis of rotation and wherein the first hinge bracket is rotatably mounted in the first fastening part via a guide slide arranged longitudinally displaceable in a guide groove.

[0002] A generic prior art is known, for example, from EP 1 754 848 A2, which describes a hinge for concealed installation between the door frame and the door leaf. The hinge brackets are mounted in a fastening element so that they are rotatable at one end and rotatable and longitudinally displaceable at the other end. The guide action is achieved via a substantially S-shaped guide groove and a guide slide arranged in the guide groove. The guide slide has a round cross-section. Such a round shape is advantageous in this embodiment because it allows the hinge to move freely through the S-shaped guide groove and enables it to move between a closed and an open position.

[0003] EP 1 574 649 A2 also shows a door hinge for a concealed installation, which differs from EP 1 754 848 A2 in particular in that the guide groove is not S-shaped but straight, and the guide slide arranged in the guide groove has a square cross-section. This square cross-section ensures better support of the hinge brackets on the guide slide. However, such a design is only practical due to the straight shape of the guide groove. For mounting the hinge bracket, the guide slide has a cylindrical recess into which the hinge bracket engages via a pivot pin.

[0004] Such a design is also described in principle in EP 2 634 335 A2, whereby, in contrast to EP 1 574 649 A2, the guide grooves are closed on the circumferential side and, moreover, have a stepped cross-section. This allows the corresponding guide slide to rest on the guide groove on two different planes, thus ensuring improved support.

[0005] Furthermore, DE 10 2019 100 302 U1 states that the guide slides can be designed with a rectangular shape.

[0006] The existing solutions have generally proven effective. However, they are only suitable to a limited extent for supporting the joint brackets under high mechanical loads.

[0007] Against this background, the following invention is based on the objective of improving the mechanical support of the joint brackets.

[0008] The subject matter and solution of the problems is a door hinge according to claim 1. Accordingly, at least one guide slide has a length extending in the longitudinal direction of the guide groove and a width extending in the lateral direction of the guide groove, wherein the ratio of the length to the width of the guide slide is at least 2:1. A longitudinal direction of the guide groove is understood to be a direction in which the guide slide is functionally movable, while the lateral direction describes a direction transverse to it, which runs perpendicular to the side walls delimiting the guide groove.

[0009] According to the invention, the guide carriage, unlike solutions known from the prior art, has an elongated shape, so that, in particular, it is not possible to insert the guide carriage at a 90° angle. Furthermore, the elongated shape also creates a larger bearing surface on which the first hinge bracket can be supported. This prevents, in particular, the door leaf from tilting, even when the hinge is in the open position.

[0010] It is understood that the first hinge bracket is longitudinally displaceable via an upper and a lower guide slide, each in a corresponding guide groove, the arrangement of the upper and lower guide slides referring to the usual installation state of the door hinge. In principle, it is sufficient if only one of the two guide slides is designed with the elongated shape according to the invention. This is preferably the lower guide slide, which must bear a significant portion of the weight acting on the hinge bracket. However, it is generally recommended to design both guide slides according to the invention in order to prevent the guide slide from being inserted incorrectly, even in the upper guide groove. All subsequent features can therefore be adopted for just one guide slide, but preferably for both guide slides and guide grooves.

[0011] Preferably, the length-to-width ratio of the guide slide is between 2:1 and 3:1, more preferably between 2:1 and 2.5:1, and most preferably between 2.0:1 and 2.3:1. This allows for a sufficiently large bearing surface while simultaneously keeping the length of the guide groove, and thus the installation depth of the mounting element, to a minimum. It should be noted that, due to the elongated design, a certain dead space must be provided in the guide groove to accommodate the guide slide in both the closed and open positions, but this dead space does not contribute to the kinematics of the hinge brackets.

[0012] The design of the guide slide depends in particular on the design of the guide groove. According to a preferred embodiment, the guide slide has a length between 8 and 16 mm, more preferably between 10 and 15 mm, and more preferably between 11 and 14 mm. The width of the guide slide corresponds essentially to the width of the guide groove less a certain tolerance that ensures jam-free movement within the guide groove. Preferably, the width of the guide slide is between 3 and 12 mm, more preferably between 4 and 11 mm, and more preferably between 5 and 10 mm. The depth of the guide slide is preferably between 3 and 7 mm, more preferably between 4 and 8 mm.

[0013] According to a preferred embodiment of the invention, the guide slides have a bolt receptacle for the rotatable mounting of the first articulated bracket, wherein the bolt receptacle is arranged off-center with respect to its length in the at least one guide slide. In this embodiment, a bolt is inserted into the first articulated bracket and then into the bolt receptacle, thereby connecting the guide slides to the articulated bracket. Based on the elongated design of the at least one guide slide and the off-center arrangement of the bolt receptacle, a comparatively large bearing surface adjacent to the bolt receptacle is thus obtained. According to a preferred embodiment, the distance between the center of the bolt receptacle and the center of the guide slide is between 15 and 30% of the length of the guide slide, preferably between 17 and 23% of the length.

[0014] The bolt receptacle is preferably circular and can be formed as a recess or bore in the guide slide. In this context, a bore is understood to be an opening that extends along the entire depth of the guide slide, thus forming an opening on both sides. A recess, on the other hand, does not extend over the entire depth and therefore only has an opening at one end.

[0015] According to a preferred embodiment of the invention, the bolt receptacle is offset towards a first end of the guide slide, the first end being adjacent to a first guide groove end when the door hinge is closed. According to such an embodiment, the bearing surface of the guide slide for the first hinge bracket is thus arranged in front of the bolt receptacle in the direction of movement with respect to an opening movement.

[0016] As previously explained, the groove width of the guide groove is preferably determined by the width of the guide slide and, taking into account a tolerance, is preferably between 3 and 12 mm, more preferably between 4 and 11 mm, and particularly preferably between 5 and 10 mm. The groove length of the guide groove is preferably between 20 and 40 mm, more preferably between 22 and 35 mm, and most preferably between 25 and 30 mm. The groove depth is between 2 and 6 mm.

[0017] According to the invention, the guide groove has a locking section extending only partially along its longitudinal direction. Within the locking section, the guide groove has a wider groove width than in sections outside the locking section. Furthermore, the guide slide arranged in the guide groove has laterally projecting wings that engage with the locking section. Thus, both the guide slide and the guide groove have a first section with a wider width and a second section with a narrower width, the wider section forming the locking section. This locking section can, in principle, extend over the entire depth of the groove. However, a preferred embodiment is one in which the locking section extends only over a portion of the groove height, resulting in a T-shaped or stepped groove cross-section.Preferably, the locking section is directly adjacent to the groove opening. The ratio of the width of the locking section to the width of the guide groove in sections outside the locking section is preferably between 1.6:1 and 1.1:1, more preferably between 1.5:1 and 1.2:1. If the locking section does not extend over the entire groove height, the ratio between the depth of the locking section and the total groove depth is between 0.1 and 0.2, more preferably between 0.12 and 0.18.

[0018] According to a further development of the invention, the locking section extends only over a portion of the groove length. This also prevents or detects in a timely manner any rotation of the guide slide by 180° when it is inserted. The locking section preferably extends over a portion between 45 and 75%, more preferably between 50 and 70%, and most preferably between 55 and 65% of the groove length.

[0019] Based on this design, it is preferably provided that the laterally projecting wings of the respective guide slide are arranged only in certain sections along the length of the guide slide. In particular, the projecting wings are arranged at one end of the guide slide. This is preferably the second end of the guide slide, which, in a closed state of the door hinge, abuts a second end of the guide groove.

[0020] According to a preferred embodiment, the guide groove is closed at both ends, whereby a closed end within the scope of the invention means that the guide carriage cannot leave the guide groove even under a hypothetical movement.

[0021] Furthermore, the guide groove is preferably straight. In addition, the guide groove is preferably arranged so that it runs perpendicular to a plane in which the two fastening parts are opposite each other in a closed state.

[0022] The present invention is subject to only a few limitations with regard to the design of the door hinge. In particular, it can be provided that the guide grooves are at least partially integrally incorporated into the first fastening part. According to a preferred embodiment, however, the guide groove is formed in a receiving element which is detachably attached to a base body of the first fastening part. In particular, both guide grooves for the upper and lower support of the first hinge bracket are formed in separate receiving elements, which can then in turn be attached to a base body of the first fastening part. This makes it possible, even with a closed guide groove, to easily arrange the guide slides with the hinge pin in the guide grooves.Furthermore, a detachable fastening also allows the fastening parts to be adjusted relative to each other, so that in particular the door leaf in the door frame can be adjusted even after an arrangement on the door hinge.

[0023] Several alternatives are also possible with regard to the design and arrangement of the hinge brackets. One alternative provides that the second hinge bracket is detachably and rotatably mounted on the second mounting part. Thus, both hinge brackets are rotatably and longitudinally displaceable at one end and rotatably mounted at the other end. In this respect, a design of the cam guide corresponding to the design of the first hinge bracket according to the invention is also possible for the second hinge bracket. The features already mentioned for the first hinge bracket can therefore be adopted analogously for the second hinge bracket.

[0024] Alternatively, the second hinge bracket can also be mounted exclusively on both mounting parts so that it can rotate freely, in which case the second hinge bracket is formed from two hinge bracket parts that are rotatably connected to each other. According to such a design, not only does the second hinge bracket pivot, but the two hinge bracket parts also pivot relative to each other during an opening or closing movement.

[0025] According to a further development of the invention, the fastening elements can be inserted into recesses in the narrow side of a door leaf and in a door frame, preferably on the jamb side of the door frame. This results in a concealed arrangement of the hinge between the door frame and the door leaf, so that the hinge is not visible from the outside when the door is closed.

[0026] The invention further relates to a door comprising a door leaf, a door frame and at least one hinge according to the invention, wherein the first fastening part is arranged and fastened in a recess in the door frame and the second fastening part is arranged and fastened in a recess in a narrow side of the door leaf.

[0027] Preferably, at least two hinges according to the invention are arranged one above the other, so that the door leaf is supported on the door frame by two hinges. This results in significantly more stable support and movement of the door leaf. In principle, it is also conceivable to provide more than two hinges according to the invention. This is particularly advantageous for especially heavy door leaves.

[0028] The invention will now be explained in more detail using an exemplary embodiment. The figures shown are: Fig. 1A, 1 Door leg with a door hinge according to the invention in a closed and an open position Fig. 2 The door hinge according to the invention in an isometric view Fig. 3 A detailed view of the door hinge according to the Fig. 2 , where only the first joint bracket and the receiving elements are shown Fig. 4A, 4 legs Detail view of the lower receiving element according to the Fig. 3 , wherein the guide carriage is shown in an open and a closed position. Fig. 5 shows a sectional view through the receiving element and the guide carriage according to section position a'a of the Fig. 4B

[0029] The Fig. 1A shows a door in a closed state, while the Fig. 1B The figure shows the door in an open position, with the door leaf 2 pivoted 180° relative to the door frame 1. This pivoting is made possible by the hinge 3, which connects the door leaf 2 to the door frame 1 in a pivoting manner. For this purpose, the hinge 3 has a first mounting element 4, which is inserted into a recess in the narrow side of the door leaf 2. Furthermore, a second mounting element 5 of the hinge 3 is inserted into a recess in the jamb side of the door frame 1.

[0030] With this design, the hinge 3 is not visible from the outside when the door is closed and therefore cannot negatively affect the door's appearance. To enable such a concealed arrangement, it is not necessary to insert the fastening elements 4, 5 into recesses in the door frame 1 and the door leaf 2. Rather, the hinge arrangement must also be designed to allow the door leaf 1 to pivot without a pivot axis located outside the plane of the door.

[0031] The exact design of the door hinge 3 is described in the Fig. 2 A more detailed description follows. For the pivotable connection of the two fastening parts 4, 5, a first and a second articulated bracket 6, 7 are provided, which are rotatably connected to each other via a vertical axis of rotation Z. The second articulated bracket 7 is furthermore formed from two articulated bracket parts 7a, 7b, which are also rotatably connected to each other, wherein the first articulated bracket part 7a is rotatably mounted in the first fastening part 4 and the second articulated bracket part 7b is rotatably mounted in the second fastening part 5.

[0032] In contrast to the second joint bracket 7, the first joint bracket 6 is formed in one piece and therefore does not consist of parts rotatably connected to one another. Furthermore, it is provided that the first joint bracket 6 is mounted in the second mounting part 5 for rotational movement only, and in the first mounting part 4 for both rotational and longitudinal displacement movement. The precise design of such a mounting is shown in particular by comparison with the Fig. 3 the figure shows only the first joint bracket 6 and the receiving elements 8, which serve in particular to support the first joint bracket 6 in the first fastening part 4.

[0033] The receiving elements 8 are manufactured separately from a base body 9 of the first fastening part and are detachably connected to it. This detachable connection allows the receiving elements 8, and thus also the position of the first hinge bracket 6 relative to the base body 9, to be adjusted, enabling the door leaf 2 to be oriented within the door frame 1 after installation. Furthermore, this separate design of the receiving elements 8 also allows for the easy insertion of a hinge pin to connect the receiving elements 8 to the first hinge bracket 6, whereby the [missing information] Fig. 3 The arrangement shown can be arranged together with the second hinge bracket 7 on the first fastening part 4.

[0034] According to the Fig. 3 The receiving elements 8 each have a guide groove 10 in which the first joint bracket 6 is guided longitudinally via a guide slide 11. In this context, the receiving elements 8 are designed as zinc die-cast parts, so that the guide groove 10 can be formed during the production of the receiving element 8 analogously to the bolt receptacle 12 for the second joint bracket 7.

[0035] The design of the receiving elements 8 with the guide groove 10 and the guide slide 11 arranged in the guide groove 10 can in particular Figuren 4A, 4B and 5 can be taken from the Fig. 4A shows the recording element 8 in an open and the Fig. 4B the receiving element 8 in a closed state. Here, the differences are... Figuren 4A und 4B essentially by the position of the guide carriage 11, wherein the guide carriage 11 according to the Fig. 4B with a first end 11a adjacent to a first guide groove end 10a and wherein according to the Fig. 4A the guide carriage 11 with its second end 11b adjoins a second guide groove end 10b.

[0036] According to the illustrated embodiment, the guide groove 10 has a length L1 between 20 and 40 mm. The length F1 of the guide slide 11 is between 8 and 18 mm. The width F2 of the guide groove 10 is between 3 and 9 mm and corresponds approximately to the width B1 of the guide slide 11, the guide slide 11 being designed with a slightly smaller width to allow jam-free movement within the guide groove 10. The depth T1 of the guide groove 10 is between 3 and 8 mm, the guide slide 11 being designed such that it is at least flush with the surrounding surfaces of the receiving element 8 and preferably projects slightly beyond them.

[0037] Overall, the guide slide 11 thus has an elongated shape and a length F 1 extending in the longitudinal direction of the groove and a width F 2 extending in the width direction of the guide groove 10, wherein the ratio of the length F 1 to the width F 2 of the guide slide 11 is at least 2:1.

[0038] Furthermore, a bolt receptacle 13 is formed in the guide slide 11, which is designed to connect the guide slide 11 to the first pivot bracket 6 via a separate bolt so that it can be rotated. This bolt receptacle 13 is arranged off-center with respect to the length F 1 of the guide slide 11 and offset towards the first end 11a of the guide slide 11.

[0039] From the Figuren 3 bis 5 It is further shown that the guide groove 10 is essentially T-shaped and has a locking section 14 for this purpose, wherein the guide groove 10 in the locking section 14 has a larger groove width B 1 , B 2 than in sections outside the locking section and wherein the guide slide 11 arranged in the guide groove 10 has laterally projecting wings 15 which engage in the locking section 14.

[0040] The locking section 14 extends only over a portion of the entire guide groove 11, with the length L 2 of the locking section 14 corresponding to between 45 and 75% of the groove length L 1.

[0041] Furthermore, it is provided that the locking section 14 extends only over a region of the groove height T 1, wherein the ratio of the height T 2 of the locking section 14 to the groove height T 1 is between 0.1 and 0.2, preferably between 0.12 and 0.18.

[0042] Regarding the design of the second hinge bracket 6, it is particularly evident from the Figuren 1A und 1B It is emphasized that only a rotatable bearing is provided, so that accordingly only the receiving elements 8 of the first fastening part 4 need to be designed with guide grooves 10. It is understood that within the scope of the invention an embodiment is also possible in which the second hinge bracket 6 is arranged to be longitudinally displaceable in the first fastening part 5, in which case a pivoted design of the second hinge bracket 7 is not required.

Claims

1. A door hinge (3) with a first and second fastening part (4, 5) as well as with at least a first and a second joint bracket (6, 7), wherein the joint brackets (6, 7) are connected to one another in a rotatably movable manner about a vertical axis of rotation (Z) and wherein the first joint bracket (6) is mounted in the first fastening part (4) in a rotatably movable manner via a respective guide carriage (11), which is arranged in a guide groove (10) in a longitudinally displaceable manner, wherein at least the guide carriage (11) has a length (F1) running in the longitudinal direction of the guide groove (10) and a width running in the width direction of the guide groove (10), characterized in that the ratio of the length (F1) to the width of the guide carriage (11) is at least 2:1 and wherein the guide groove (10) has a securing section (14), which runs along the longitudinal direction only in some areas, wherein the guide groove (10) is formed with a larger groove width (B1, B2) in the securing section (14) than in sections outside the securing section (14) and wherein the guide carriage (11) arranged in the guide groove (10) has laterally protruding wings (15), which engage with the securing section (14).

2. The door hinge (3) according to claim 1, characterized in that the ratio of the length (F1) to the width of the guide carriage (11) is between 2:1 and 3:1, preferably between 2:1 and 2.5:1 and particularly preferably between 2.0:1 and 2.3:1.

3. The door hinge (3) according to one of claims 1 or 2, characterized in that the guide carriage (11) has a length (F1) between 8 and 16 mm.

4. The door hinge (3) according to one of claims 1 to 3, characterized in that the guide carriages (11) have a pin receptacle (13) for the rotatably movable mounting of the first joint bracket (6), wherein the pin receptacle (13) is arranged eccentrically based on the length (F1) in the at least one guide carriage (11).

5. The door hinge (3) according to claim 4, characterized in that the pin receptacle (13) is offset in the direction of a first end (11a) of the guide carriage (11), wherein the first end (11a) adjoins a first guide groove end (10a) in a closed state of the door hinge (3).

6. The door hinge (3) according to one of claims 1 to 5, characterized in that the guide groove (10) has a groove length (L1) between 20 and 40 mm.

7. The door hinge (3) according to one of claims 1 to 6, characterized in that the securing section (14) extends over an area between 45 and 75% of the groove length (L1).

8. The door hinge (3) according to claim 7, characterized in that the securing section (14) extends only over an area of the groove height (T1).

9. The door hinge (3) according to one of claims 1 to 7, characterized in that the laterally protruding wings (15) are arranged along the length (F1) of the guide carriage (11) only in some areas.

10. The door hinge (3) according to one of claims 1 to 9, characterized in that the guide groove (10) is closed at both ends.

11. The door hinge (3) according to one of claims 1 to 10, characterized in that the guide groove (10) is formed in a straight manner.

12. The door hinge (3) according to one of claims 1 to 11, characterized in that the guide groove (10) is formed in a receiving element (8), which is releasably fastened to a base body (9) of the first fastening part (4).

13. The door hinge (3) according to one of claims 1 to 12, wherein the second joint bracket (7) is mounted on the second fastening part (5) in a longitudinally displaceable and rotatably movable manner.

14. The door hinge (3) according to one of claims 1 to 12, characterized in that the second joint bracket (7) is mounted on the second fastening part (5) in an exclusively rotatably movable manner, wherein the second joint bracket (7) is formed from two joint bracket parts (7a, 7b), which are connected to one another in a rotatably movable manner.

15. The door hinge (3) according to one of claims 1 to 14, characterized in that the fastening parts (4, 5) can be inserted in recesses in the narrow side of a door wing (2) and in a door frame (1).

16. A door with a door wing (2), a door frame (1) and at least one door hinge (3) according to one of claims 1 to 15, wherein the second fastening part (5) is fastened in a depression in the door frame (1) and the first fastening part (4) is fastened in a depression in a narrow side of the door wing (2).