FRAME MOUNTING ARRANGEMENT, DOOR AND FASTENINGS

Description

[0001] The invention relates to a frame fastening arrangement, particularly for doors, comprising a hollow metal profile having a front wall and a rear wall, and a fastening means arranged thereon. The hollow metal profile is preferably an extruded profile, wherein the extruded aluminum profile can be part of a door leaf or a door frame. Doors of this type with profiles made of aluminum or steel are frequently used as interior doors, apartment doors, connecting doors, or as front and entrance doors.

[0002] Door hinges intended for corresponding doors are distributed by Simonswerk GmbH under the brand name "ALPRO" (see Simonswerk Bandtechnik, Handbook 2012 / 2013, pages 410 to 416).

[0003] The hollow metal profile of the door frame and / or door leaf is characterized by relatively high stability; however, the forces exerted at specific points by the hinge must be absorbed and distributed appropriately. Various approaches for suitable fastening are known from the prior art.

[0004] From EP 1 844 205 B1, a mounting screw with an outer sleeve and a movable inner bolt is known. The inner bolt is chamfered on its front face to allow insertion into a rear wall opening of the hollow metal profile. The inner bolt is press-fitted into the outer sleeve and extends out of the outer sleeve at a second end. The outer sleeve has an external thread at a first end to be connected to a front wall opening of the hollow metal profile by means of a screw connection. The inner bolt is simply inserted into the rear wall opening to prevent tilting. To ensure that the head of the inserted inner bolt is radially supported at the correct depth against the rear wall opening, the inner bolt, which is held in the press fit in the outer sleeve, can be driven or pressed into the outer sleeve using suitable impact or pressing tools.

[0005] WO 2008 / 092 487 A1 discloses a frame fastening arrangement for doors comprising a hollow metal profile having a front wall and a rear wall, and a fastening element comprising an outer sleeve and an inner bolt. The outer sleeve is inserted into a front wall opening of the hollow metal profile and is held at the front wall opening in an axial direction extending perpendicular to the front wall. The inner bolt is adjustably received on an external thread in an internal thread of the outer sleeve. The inner bolt can be supported by an expanding foot against the rear wall by adjusting the bolt to achieve improved stability. This support can be enhanced by a flowable and / or hardening material, although such solutions are comparatively complex.

[0006] WO 02 / 38 897 A1 addresses the problem of having an additional internal metal reinforcement in certain hollow profiles with low load-bearing capacity. A bushing, similar to a fastener, extends through the walls of the low-load-bearing hollow profile to a front wall of the metal reinforcement, which then provides the primary support. Support at a rear wall of the metal reinforcement is not provided. A similar approach is also known from DE 27 00 100 A1.

[0007] DE 20 2018 101 497 U1 discloses a frame fastening arrangement for a door with a hollow metal profile having a front wall and a rear wall, wherein a screw-in sleeve is inserted into a front wall opening of the metal profile. Furthermore, a mounting screw is provided, which has a band roller section and a threaded section adjoining it. The threaded section extends completely through the screw-in sleeve and engages with a free end in a rear wall opening of the hollow metal profile, thereby providing axial support against the rear wall of the hollow metal profile. DE 200 18 984 U1 also discloses an example of a frame fastening arrangement.

[0008] In light of the prior art, the present invention aims to provide a frame mounting arrangement that is both easy to handle and exhibits good long-term functional properties. Furthermore, a door formed by the frame mounting arrangement and a fastening means for the frame mounting arrangement are to be provided.

[0009] The subject matter of the invention and the solution to the problem are a frame fastening arrangement according to claim 1 and a door according to claim 12.

[0010] The invention therefore relates to a frame fastening arrangement, in particular for doors, comprising a hollow metal profile having a front wall and a rear wall, and a fastening means comprising an outer sleeve and an inner bolt, wherein the outer sleeve is inserted into a front wall opening of the hollow metal profile and is held in an axial direction extending perpendicular to the front wall, in particular in a form-fitting manner, wherein the inner bolt is adjustably received with an external thread in an internal thread of the outer sleeve, wherein the inner bolt engages with a free end in a rear wall opening of the hollow metal profile and is supported in an axial direction against the rear wall, and wherein a fastening screw is received opposite the inner bolt by the internal thread of the outer sleeve.

[0011] The outer sleeve and the inner bolt are preferably essentially cylindrical. Starting from a cylindrical basic shape, chamfers, small shoulders, tool holders, or the like may be provided at the ends in addition to threads.

[0012] According to the present invention, the fastening element is supported on both the front and rear walls of the hollow metal profile, with the front wall also being provided with the front wall opening and the rear wall with the rear wall opening. The two walls typically run parallel to each other, with the outer sleeve being positively engaged in the plane of the front wall and the inner bolt being positively engaged in the plane of the rear wall. Additionally, a support and preferably a clamping element is provided perpendicular to this along the axial direction, which preferably compresses the fastening element within the hollow metal profile and thus contributes to a stable, play-free support. In particular, the force can be precisely adjusted by means of the external thread of the inner bolt in conjunction with the internal thread of the outer sleeve. For axial support, or rather,For example, a torque between 1 Nm and 10 Nm can be applied to the internal thread during assembly.

[0013] Within the scope of the invention, a design of the frame mounting arrangement is possible in which the fastening element can also be released again as needed. Furthermore, the axial force can be easily checked during maintenance work thanks to the described adjustment, and retightening is also possible.

[0014] To attach, for example, a door hinge to the hollow metal profile, preferably at least one separate fastening screw or similar is provided, which is then connected to the fastener already attached to the hollow metal profile. The fastener then takes on the function of a receptacle or dowel.

[0015] The support of the fastening means on the front wall opening of the front wall and the rear wall opening of the rear wall, as provided according to the invention, results in a particularly advantageous support with regard to different loads and in particular also against tilting of the fastening means, even if elastic deformation of the metal hollow profile cannot be excluded under load.

[0016] According to a preferred embodiment of the invention, the rear wall opening is smaller than the front wall opening. Both the rear wall opening and the front wall opening are typically round, and if they differ in size, the difference in diameter is preferably at least 1 mm.

[0017] It should be noted that the entire fastener is inserted into the hollow metal profile through the front wall opening, thus defining a maximum diameter. The inner bolt, which is initially inserted at least partially into the outer sleeve, is therefore correspondingly smaller, with its free end then engaging in the rear wall opening, which must also be correspondingly smaller.

[0018] When preparing the hollow metal profile, for example, a smaller drill bit can first be used to create the opening in the back wall through the front wall, and then a larger drill bit is used to create the correspondingly larger opening in the front wall. Alternatively, it is also possible to create both the front and back wall openings using a step drill bit or similar tool.

[0019] To ensure that the outer sleeve is held in the axial direction, i.e. perpendicular to the front wall and usually also perpendicular to the rear wall, a positive locking connection is provided between the outer sleeve and the front wall in the axial direction.

[0020] The outer sleeve can be provided with an external thread in a particularly simple way, with the front wall opening then being designed as a threaded hole. During assembly, the inner bolt is then expediently screwed into the outer sleeve far enough so that the outer sleeve, with its external thread, can be screwed into the front wall opening to the desired depth.

[0021] It is generally possible for the outer sleeve to be provided with a collar or flange on its side opposite the inner bolt, which also acts as a stop when screwed in. Preferably, however, one end face of the outer sleeve is flush with an outer surface of the front wall. When the outer sleeve is then positioned as desired, actuation of the inner bolt provides axial support or tension to the fastener, thus stabilizing it in its position. If, as described above, the outer sleeve is held in the threaded opening of the front wall (designed as a threaded bore) by its external thread, the axial tension also creates a degree of self-locking, which prevents the outer sleeve and thus the entire fastener from unintentionally loosening.

[0022] According to the invention, the inner bolt engages with its free end in the rear wall opening of the metal profile. In this context, it is advantageous if the inner bolt has a centering section with a diameter reduction at its free end, wherein the centering section then engages in the rear wall opening or, depending on the embodiment, extends through the rear wall opening.

[0023] The centering section can be designed to be conical and engage only in the rear wall opening. This conical centering section then also forms a contact surface for axial support and rests against an edge of the rear wall opening. Especially when the rear wall opening has a recess ideally adapted to the conical shape, a particularly uniform, flat contact surface is achieved. This complementary conical shape of the rear wall opening, on the one hand, and the reduction in diameter, on the other, ensures good, backlash-free centering and fixation.

[0024] As previously explained, the axial tension of the inner bolt and outer sleeve within the hollow metal profile creates a certain self-locking effect, so that with suitable tightening torques, self-locking can be achieved solely through this mechanism. However, it is also possible to provide the centering section, particularly in the case of a conical design, with knurling or a similar profile. Such a profile, when tightened, causes material deformation and / or cutting, thus also achieving a particularly reliable locking mechanism.

[0025] According to an alternative embodiment of the invention, the inner bolt can rest against an inner surface of the rear wall with a step, with the free end of the inner bolt then extending through the rear wall opening. The flat contact with the inner surface of the rear wall also allows for high holding forces to be achieved through friction. Here, too, structuring or the incorporation of a locking element such as a snap ring or the like is fundamentally possible. In this embodiment, the free end can also be chamfered at its edges or be conical overall to provide a degree of centering when the inner bolt is unscrewed from the outer sleeve towards the rear wall. Optionally, an external thread can also be provided at the free end, in which case the rear wall opening is expediently designed as a threaded bore to allow screwing.

[0026] To handle the outer sleeve and the inner bolt, and in particular to assemble or clamp them using a screw motion, suitable tool holders are advantageous. According to a preferred embodiment of the invention, the outer sleeve has an internal tool holder so that the essentially cylindrical shape on the outside is not affected by the tool holder. In particular, a female receptacle can be provided, which enables a positive fit. The tool holder can, in particular, have a polygonal shape, a star shape, or the like.

[0027] The inner bolt also features a tool recess on its side accessible through the outer sleeve. Besides a simple slot or Phillips head, standard female drive types with a polygon or star pattern are also possible.

[0028] The outer sleeve enables a positive-locking connection with the front wall and also accommodates the inner bolt. To allow for a certain degree of axial adjustment, the outer sleeve must be of sufficient length. This adjustment is ultimately determined by the difference between the maximum and minimum overlap of the outer sleeve and inner bolt. It is important to note that, in the clamped state, sufficient overlap must still be present for all profile sizes to reliably support the inner bolt against the outer sleeve.

[0029] According to the invention, the internal thread of the outer sleeve is also designed to accommodate a separate fastening screw. Accordingly, even with a comparatively small hollow metal profile, a sufficient screw-in depth for such a fastening screw must be provided.

[0030] Against this background, the outer sleeve can, for example, have a length between 15 mm and 40 mm. The inner bolt can, for example, have a length between 20 mm and 50 mm. The distance between the front wall and the rear wall can, for example, be between 30 mm and 70 mm.

[0031] In principle, different outer sleeves and inner bolts can be provided for different hollow metal profiles. In many cases, it is sufficient to provide inner bolts of an adapted length for different hollow metal profiles, provided the outer sleeve is uniform in design and length. This also has the advantage that the inner bolts are structurally simple, and subsequent shortening of the inner bolt is not precluded.

[0032] As previously explained, the frame mounting arrangement is specifically designed for a door. For example, a door hinge can be mounted with the mounting screw opposite the inner bolt, using the internal thread of the outer sleeve.

[0033] To ensure even support of a door hinge, preferably at least two fastening screws are provided, which then interact with an associated fastener in the manner described. If, according to the invention, a door leaf with two hinges is attached to a door frame, at least four fastening points are provided on the door frame and / or the door leaf, each with a fastening screw and a fastener. As is known from the prior art, often both the door frame and a frame or edge of the door leaf are formed from a hollow metal profile, so that the same type of fastening can be used on both sides.

[0034] Based on the exemplary arrangement described, it is clear that, depending on requirements, a door leaf can also be attached with more than two hinges, and that more than two attachment points on the door frame and / or the door leaf can be provided for each individual hinge. The door described above is the subject of dependent claim 12.

[0035] The invention is explained below with reference to exemplary drawings. These show: Fig. 1 a frame mounting arrangement, Fig. 2 the frame mounting arrangement according to the Fig. 1 In a horizontal section, Fig. 3 different internal bolts for a fastening device according to the Figuren 1 and 2 , Fig. 4a, 5a, 6aalternative designs of fastening means Fig. 4b, 5b, 6bFrame fastening arrangements with the respective associated fastening means, Fig. 7a door with the frame fastening arrangement.

[0036] The Fig. 1 shows a frame mounting arrangement for a door (see Fig. 7 ) with a hollow metal profile 3 having a front wall 1 and a rear wall 2. The hollow metal profile 3 can, for example, be formed as an extruded profile made of aluminum.

[0037] The frame fastening arrangement further comprises a fastening element 4 with an outer sleeve 5 and an inner bolt 6. Already in the Fig. 1 It can be seen that the fastening element 4 with outer sleeve 5 and inner bolt 6 is supported on both the front wall 1 and the rear wall 2 of the hollow metal profile 3. Further details are provided in the following. Fig. 2 to be taken.

[0038] According to the Fig. 2 The outer sleeve 5 is inserted into a front wall opening 7 of the front wall 1. Specifically, the front wall opening 7 is designed as a threaded bore, with the outer sleeve 5 being screwed into the front wall opening 7 via an external thread 8' such that one end face of the outer sleeve 5 is flush with an outer surface of the front wall 1. Furthermore, it can be seen that the outer sleeve 5 has an internal tool receptacle 9 and an internal thread 10. Except for the external thread 8', the tool receptacle 9, and the internal thread 10, the outer sleeve 5 has the form of a hollow cylinder.

[0039] The inner bolt 6 has an external thread 8 which is engaged by the internal thread 10 of the outer sleeve 5, so that the inner bolt 6 can be adjusted within the outer sleeve 5 by a screwing motion. For this purpose, the inner bolt 6 also has a tool receptacle 9' on its side accessible through the outer sleeve 5.

[0040] According to the Fig. 2 In the illustrated assembled state, the inner bolt 6 engages with a free end 11 in a rear wall opening 12 of the rear wall 2. In this way, axial support is provided against the rear wall 2. The fastening element 4 is thus held particularly stably and reliably on the front wall 1 and on the rear wall 2, so that a further fastening screw 20 can subsequently be received in the free area of ​​the inner bolt 6.

[0041] Within the scope of the invention, different design possibilities arise for the free end 11 of the inner bolt 6. Thus, according to the Fig. 2 A conical diameter reduction 13 is provided at the free end 11, before a short straight section with an external thread 8 connects to it. A radial collar 14 then connects to it in the direction of the outer sleeve 5, forming a stop.

[0042] If according to the embodiment Fig. 2 Since the external thread 8 is also provided at the free end 11, the rear wall opening 12 must also be designed as a threaded bore. When the inner bolt 6 is then unscrewed from the outer sleeve 5 towards the rear wall 2 and screwed into the rear wall opening 12 with its free end 11, the fastener 4 is axially fixed and clamped. However, when the radial collar 14 abuts the inside of the rear wall 2, further unscrewing of the inner bolt 6 from the outer sleeve 5 is not possible, thus preventing deformation of the hollow metal profile 3 due to excessive tightening forces.

[0043] Already from the Fig. 2 It can be seen that even in the assembled state, sufficient overlap of the internal thread 10 of the outer sleeve 5 and the external thread 8 of the inner bolt 6 should be present to ensure the desired stability. A certain degree of length adjustment is then possible by screwing the inner bolt 6 in and out differently relative to the outer sleeve 5. However, for larger dimensional deviations, it may also be advantageous to provide outer sleeves 5 and / or inner bolts 6 of different lengths for different hollow metal profiles 3. Due to the design, the exchange or provision of different inner bolts 6 is easily possible, as shown in the Fig. 3 is shown as an example.

[0044] According to the Fig. 2 Figure 1 shows an embodiment in which the inner bolt 6 has an external thread at its free end 11, although this embodiment is merely optional. This offers the advantage of preventing deformation of the hollow metal profile 3, while simultaneously limiting the axial clamping forces. Particularly in view of the high stability of hollow metal profiles, it may therefore be advantageous, according to alternative embodiments of the invention, if the rear wall opening is not designed as a threaded bore, so that the inner bolt 6 can be inserted there until the desired or suitable axial forces are achieved by clamping the entire fastening element 4 between the front wall 1 and the rear wall 2.

[0045] Against this background, the Fig. 4a An alternative embodiment of the fastening element 4, wherein the inner bolt 6 also has a diameter reduction 13' at its free end 11. A knurling 15 is provided on the diameter reduction 13'. The centering section formed by the diameter reduction 13' is then located according to the Fig. 4b directly at an edge of the rear wall opening 12, which can also be expediently countersunk in a conical shape. The diameter reduction 13' forming the centering section thus engages only in the rear wall opening 12. The knurling 15 allows for self-locking through plastic material deformation or cutting.

[0046] The Fig. 5a Figure 1 shows another alternative embodiment of the fastening element, which has a simple conical diameter reduction 13 at the free end 11 of the inner bolt 6. According to the Fig. 5b The axial support against the rear wall 2 is provided by an additional web 16 of the rear wall 2.

[0047] The Fig. 6a Figure 4 shows an embodiment of the fastening means 4, wherein a diameter reduction 13" in the form of a step also provided with a thread is provided at the free end 11 of the inner bolt 6.

[0048] According to the Fig. 6b The free end 11 then extends through the associated rear wall opening 12, which is designed as a threaded bore, forming a screw connection, to such an extent that the diameter reduction 13" in the form of the step lies flat against the inside of the rear wall 2, allowing comparatively large forces to be applied there. In principle, roughening or the insertion of a snap ring or the like is also possible at this contact surface.

[0049] Alternatively, it is also possible to use the inner bolt 6 in a design corresponding to the Fig. 6a and Fig. 6b No threads are provided at the free end 11, so that the fixing is essentially achieved by axial clamping and larger axial forces can also be generated if necessary.

[0050] The Fig. 7 Figure 1 shows, purely as an example, a possible installation situation with a door leaf 17, which is pivotally held on a door frame 19 by two hinges 18. Both the door leaf 17 and the door frame 19 have the previously shown hollow metal profile 3, with two fastening screws 20 provided on each of the door leaf 17 and the door frame 19. Each fastening screw 20 is associated with a fastener 4, which is designed as described above.

Claims

1. A frame fastener assembly, in particular for doors, with a hollow metal profile (3) having a front wall (1) and a rear wall (2) and with a fastening means (4) having an outer sleeve (5) and an inner bolt (6), wherein the outer sleeve (5) is inserted into a front wall opening (7) of the hollow metal profile (3) and is held on the front wall opening (7) in an axial direction extending perpendicular to the front wall (1), wherein the inner bolt (6) is adjustably received with an external thread (8) in an internal thread (10) of the outer sleeve (5), wherein the inner bolt (6) engages with a free end (11) with a rear wall opening (12) of the hollow metal profile (3) and supports itself against the rear wall (2) in the axial direction and wherein, lying opposite to the inner bolt (6), a fastening screw (20) is received by the internal thread (10) of the outer sleeve (5).

2. The frame fastener assembly according to claim 1, wherein the rear wall opening (12) is smaller than the front wall opening (7).

3. The frame fastener assembly according to claim 1 or 2, wherein the outer sleeve (5) is held with an external thread (8') in the front wall opening (7) embodied as threaded bore.

4. The frame fastener assembly according to one of claims 1 to 3, wherein on its free end (11) the inner bolt (6) has a centering section with a diameter reduction (13, 13', 13"), which engages with the rear wall opening (12) or engages through the rear wall opening (12).

5. The frame fastener assembly according to claim 4, wherein the centering section engages in a conical manner with the rear wall opening (12) and abuts against an edge of the rear wall opening (12).

6. The frame fastener assembly according to claim 5, wherein the centering section has a knurling (15).

7. The frame fastener assembly according to claim 4, wherein the inner bolt (6) abuts with a step against an inner surface of the rear wall (2).

8. The frame fastener assembly according to one of claims 1 to 7, wherein the outer sleeve (5) has an internal tool receptacle (9).

9. The frame fastener assembly according to one of claims 1 to 8, wherein the outer sleeve (5) has a length between 15 mm and 40 mm and the inner bolt (6) has a length between 20 mm and 50 mm, wherein the distance between the front wall (1) and the rear wall (2) is between 30 mm and 70 mm.

10. The frame fastener assembly according to one of claims 1 to 9, wherein a front side of the outer sleeve (5) is flush-mounted with an outer side of the front wall (1).

11. The frame fastener assembly according to one of claims 1 to 10, wherein a door hinge (18) is fastened to the hollow metal profile (3) by means of the fastening screw (20).

12. A door with a door leaf (17), a door case (19) and with two door hinges (18), by means of which the door leaf (17) is held in a pivotably movable manner on the door case (19), wherein the door hinges (18) are fastened to the door leaf (17) and / or the door case (19) by means of a frame fastener assembly according to one of claims 1 to 11.