Device for mounting a window frame to a roller shutter box

Abstract

Device for mounting a window frame (1) in a building opening (2), wherein a roller shutter box (4) is arranged between the window frame (1) and a building ceiling (3), with a reinforcing device (7) that can be arranged within the roller shutter box (4), with a first fastening device (5) by means of which the window frame (1) can be connected to the reinforcing device (7), with a second fastening device (6) by means of which the building ceiling (3) can be connected to the reinforcing device (7), wherein at least the second fastening device (6) can be connected to the building ceiling (3) via a screw connection (14''), characterized in that the second fastening device (6) has fastening means (13, 17, 20, 36, 37, 14') such that a screw connection is provided at an acute angle (φ) to a surface (18) of the building ceiling (3).

Description

[0001] The invention relates to a device for mounting a window frame in a building opening, wherein a roller shutter box is arranged between the window frame and a building ceiling, with a reinforcing device that can be arranged within the roller shutter box, with a first fastening device by means of which the window frame can be connected to the reinforcing device, and with a second fastening device by means of which the building ceiling can be connected to the reinforcing device, wherein at least the second fastening device can be connected to the building ceiling via a screw connection.

[0002] DE 20 2015 102 179 U1 discloses a device for mounting a window frame in a building opening, which device has fastening means for fastening a window frame to a roller shutter box and for fastening the roller shutter box to a window lintel arranged above the window frame or to a building ceiling. Arranged within the roller shutter box is a reinforcement device which is connected to the window frame on one side via a first fastening device and to the window lintel on the other side via a second fastening device. Both the first and the second fastening device can be designed as a screw connection with a screw which is inserted into a bore perpendicular to a surface of the window lintel or the window frame. It is desirable to improve the force-fitting connection between the reinforcement device and the window lintel or the building ceiling.

[0003] EP 3 091 167 B1 discloses a device for mounting a window frame in a building opening, wherein a roller shutter box is arranged between the window frame and a building ceiling or window lintel. The fastening device for attaching the roller shutter box to the building ceiling comprises a Y-shaped fastening element that is cast into the building ceiling and connected via a screw connection to a reinforcement device arranged within the roller shutter box. A disadvantage of the known device is that the Y-shaped fastening element must be cast into the building ceiling, which increases the complexity.

[0004] EP 2 636 839 B1 discloses a device for mounting a window frame in a building opening in which a roller shutter box is arranged. The roller shutter box is connected to the window frame at the bottom via a first fastening device and to a building ceiling or window lintel at the top via a second fastening device. A reinforcement device extends within the roller shutter box and is connected to the window frame via the first fastening device and to the building ceiling via the second fastening device. Both the first fastening device and the second fastening device comprise a screw connection as fastening means, with screw bolts being inserted into a bore perpendicular to a surface of the window frame or the building ceiling. It is desirable to improve such a force-locking connection.

[0005] The object of the present invention is therefore to further develop a device for mounting a window frame in a building opening, in which a roller shutter box is additionally provided between the window frame and a building ceiling of the building opening, wherein a force-locking connection is to be improved in a simple manner.

[0006] To achieve this object, the invention in conjunction with the preamble of claim 1 is characterized in that the second fastening device has fastening means so that a screw connection is provided at an acute angle to a surface of the building ceiling.

[0007] The particular advantage of the invention is that, by means of fastening means oriented in an oblique direction or at an acute angle to a surface of the building ceiling, the force-locking connection has a force component in a vertical direction (perpendicular to the surface of the building ceiling) as well as in a horizontal direction (in a plane of the surface of the building ceiling), so that both vertical and horizontal forces can be better absorbed. In particular, the forces of the horizontal wind load can be better absorbed. The space above the roller shutter box provided by the building ceiling or window lintel can advantageously be used for this purpose.

[0008] According to a preferred embodiment of the invention, the fastening means comprises, on the one hand, a contact surface which can be placed on an upper side of the roller shutter box and / or on a surface of the building ceiling, and, on the other hand, an inclined surface which is firmly connected to the contact surface and which encloses the acute angle with the contact surface. As an additional fastening means, a screw is preferably attached to the inclined surface and is inserted through a hole in the inclined surface and a hole in the contact surface into a hole in the building ceiling. For example, the screw can be screwed into the hole in the building ceiling while simultaneously cutting a thread into the hole. Alternatively, a dowel can be inserted into the hole in the building ceiling, into which the screw is screwed.Because the inclined surface is arranged rigidly to the contact surface, a defined angle is specified at which the inclined screw connection to the surface of the building ceiling can be made, i.e. an axis of the screw forms the acute angle to the surface of the building ceiling.

[0009] According to a first embodiment of the invention, the inclined surface and the contact surface form a separate component, referred to as an angled part. This angled part can be detachably connected to the reinforcement device, for example, by means of a force-fitting and / or form-fitting connection. This advantageously reduces manufacturing costs, as the corresponding components can be assembled on-site.

[0010] According to the first embodiment of the invention, the angle part additionally has a bore and / or recess, thus enabling axial fastening between the reinforcement device and the building ceiling. Preferably, a screw can be screwed into a bore with its axis perpendicular to the surface of the building ceiling, thus creating an additional force-locking connection in the vertical direction. In this embodiment, the angle part thus enables angled fastening and axial fastening of the reinforcement device to the building ceiling or window lintel. Advantageously, the axial fastening can be designed to set a predetermined distance or gap between the building ceiling and the roller shutter box or reinforcement device. The angled fastening enables additional fastening with a force component in the direction of the wind load and a force component transverse to the surface of the building ceiling.

[0011] According to a second embodiment of the invention, the support surface is integrally connected to the reinforcement device. The inclined surface is formed by bending or folding a tab protruding in the plane of the support surface. The reinforcement device preferably comprises at least one plate-shaped component, so that the support surface has a relatively large area. In the direction of the wind load, the axial fastening can be provided on one side and the inclined fastening on the other side. The reinforcement device has a relatively high degree of stiffening, thus creating a stable connection between the window frame and the building ceiling.

[0012] Further advantages of the invention emerge from the further subclaims.

[0013] Two embodiments of the invention are explained in more detail below with reference to the drawings.

[0014] They show: Fig. 1 a perspective view of a mounting device according to the invention according to a first embodiment in perspective view, Fig. 2 a side view of the mounting device according to Fig. 1 in assembly position, showing a slanted fastening on the top side of a roller shutter box in vertical section, Fig. 3 a side view of the mounting device according to Fig. 1 in assembly position, with an axial fastening shown on the top side of the roller shutter box in vertical section, Fig. 4 a perspective view of the mounting device according to the invention according to a second embodiment in perspective view, Fig. 5 a side view of the mounting device in the mounting position according to the second embodiment according to Fig. 4, where a vertical section of a slanted fastening is shown on the top side of a roller shutter box and Fig. 6 a side view of the mounting device in the mounting position according to a second embodiment according to Fig. 4, where an axial fastening is shown in vertical section on the top side of the roller shutter box.

[0015] In the following, two devices for mounting a window frame 1 in a building opening 2 are described, wherein a roller shutter box 4 is arranged between the window frame 1 and a building ceiling 3 or a window lintel.

[0016] The mounting device comprises a plurality of fastening means used to fasten the window frame 1 to the roller shutter box 4 and to fasten the roller shutter box 4 to the building ceiling 3. A first fastening device 5 is provided for fastening the window frame 1 to the roller shutter box 4. A second fastening device 6 is provided for fastening the roller shutter box 4 to the building ceiling 3. The first fastening device 5 is connected to the second fastening device 6 via a reinforcing device 7, which preferably extends within the roller shutter box 4, essentially in the vertical direction V.

[0017] According to a first embodiment of the invention according to the Fig. 1 to 3, the reinforcement device 7 is designed as a tube 8 arranged in a vertical bore of the roller shutter box 4. The tube 8 extends elongated and straight in the longitudinal direction L or in the vertical direction V in the installed position.

[0018] At its bottom, the tube 8 has a transverse bore into which a cross brace 9 can be inserted. The cross brace 9 is long enough that a free end portion 10 thereof is located above the window frame 1. In this way, the window frame 1 can be force-fitted to the cross brace 9 by means of a screw 11. The first fastening device 5 thus comprises a screw connection that is oriented perpendicular to a surface 12 of the roller shutter box 4 or in the vertical direction V. The first fastening device 5 thus comprises the cross brace 9 and the screw 11.

[0019] The cross brace 9 is tubular and has a longitudinal bead 40 on a side facing the window frame 1. The screw 11 can be easily attached to the tube 9 at the longitudinal bead 40 after self-tapping through the window frame 1, so that it can completely penetrate the tube 9 by self-tapping.

[0020] The second fastening device 6 is arranged in an upper region of the roller shutter box 4 in the vertical direction V and is attached to an upper end of the tube 8. The second fastening device 6 comprises, as fastening means, an angled part 13 and a plurality of screws 14', 14" on the one hand. The screws 14', 14" each have a threaded shaft 15 and a head 16.

[0021] The angle part 13 has two legs arranged at an acute angle φ to each other. The angle part 13 has, on the one hand, a contact surface 17 as the first leg, which can be placed flat against a surface 18 of the building ceiling 3. In the assembled position of the device, the contact surface 17 is thus located between the surface 18 of the building ceiling 3 and an upper side 19 of the roller shutter box 4.

[0022] Furthermore, the angle part 13 has an inclined surface 20 which extends obliquely at the acute angle φ to the surface 18 of the building ceiling 3.

[0023] A vertex 21 of the angle part 13 is arranged on a side of the tube 8 facing away from a roller shutter (not shown) of the roller shutter box 4. In this way, for example, two screws 14' can be guided obliquely into the building ceiling 3, forming the acute angle φ. For this purpose, both the contact surface 17 and the inclined surface 20 have aligned holes, so that the screw 14' can be pushed through or guided through the angle part 13, forming the oblique or acute angle φ. As can be seen from Fig. 2, the screw 14' with the threaded shaft 15 extends in the assembly position at the oblique angle φ within the building ceiling 3, so that the absorbing force has a force component in the vertical direction V and a force component in the horizontal direction H.

[0024] Within the tube 8, in an end region facing the building ceiling 3, an insulating sleeve 22 is arranged, into which a screw 14" can be threadedly engaged. During assembly, the roller shutter box 4 is moved into the intended mounting position, forming a joint 23. By subsequently screwing the screw 14" into the building ceiling 3, for example by cutting a thread, a firm connection between the roller shutter box 4 and the building ceiling 3 can be established in a first step. In a second step, the screws 14' are then inserted through the holes in the angle part 13 and ensure an additional, further firm connection between the roller shutter box 4 and the building ceiling 3.

[0025] The screw (axial screw) 14'' arranged in the pipe 8 enables an axial connection of the pipe 8 to the building ceiling 3. The screws (angled screws) 14' guided through the angle part 13 ensure an oblique fastening of the pipe 8 to the building ceiling 3, since the screw 14'' serving for the axial fastening at the front end of the pipe 8 also passes through a bore 24 of the contact surface 17.

[0026] To ensure that the angled part 13 can be placed in a form-fitting manner at the end of the pipe 8, the inclined surface 20 has a partially circular recess 25. The inclined surface 20 thus extends at an acute angle φ obliquely to an axis of the pipe 8.

[0027] The contact surface 17 and the inclined surface 20 are each essentially rectangular and plate-shaped. The contact surface 17 has such dimensions that the front end of the tube 8 is covered by it. To enable the inclined fastening, the angle part 13 has a length that is approximately three times the diameter of the tube 8. In this way, the holes provided for the axial screws 14' can be arranged on both sides of the hole provided for the central axial screw 14', as can be seen from Fig. 1 can be seen.

[0028] The contact surface 17 and the inclined surface 20 enclose the acute angle φ in a range of 30° to 60°, preferably 45°.

[0029] The fasteners are each made of a metal material.

[0030] A second embodiment of the invention according to the Fig. 4 to 6 differs from the first embodiment according to the Fig. 1 to 3, essentially in that the reinforcement device 7 is formed by a flat or plate-shaped upper part 30 and a lower part 31, which can be arranged and fastened to one another in a manner adjustable relative to one another in the vertical direction V via elongated holes 32. For this purpose, corresponding screw connections 33 are provided.

[0031] Provided underneath the reinforcing device 7 is a cross-sectionally rectangular cross-brace 34 of the first fastening device 5, to which—as in the first exemplary embodiment—the window frame 1 is frictionally connected via the screw 11. Since a side of the cross-brace 34 facing the window frame 1 runs perpendicular to the axis of the screw 11, the cross-brace 34 does not require a longitudinal bead for the secure attachment of the screw 11 to the cross-brace 34. The screw 11 can penetrate the window frame 1 by self-tapping and then engage the side of the cross-brace 34 facing the window frame 1 by self-tapping, without penetrating the opposite side of the cross-brace 34. The screw 11 thus only partially penetrates the cross-brace 34.

[0032] Identical components or component functions of the embodiments are provided with the same reference numerals.

[0033] In the upper area of ​​the reinforcement device 7, no separate component is provided to ensure axial and oblique fastening. Instead, the upper part 30 has a double bevel, with a contact surface 36 extending at a right angle to a vertical plate 35 of the upper part 30 and an inclined surface 37 adjoining the contact surface 36 at an acute angle φ, each formed by beveling or bending. Like the inclined surface 20, the inclined surface 37 is arranged on a side of the upper part 30 facing away from the roller shutter (not shown).

[0034] As in the first embodiment of the invention, axial fastening is possible by means of the axial screw 14'' and oblique fastening is possible by means of two oblique screws 14'. In contrast to the first embodiment of the invention, the contact surface 36 is arranged on the inside of the roller shutter box 4, wherein the contact surface 36 lies flat against an inside of the upper side 19 of the roller shutter box 4. The bore 24 of the contact surface 36 is arranged offset in the direction of the cross strut 34 from the bores of the contact surface 36 provided for the passage of the oblique screws 14'. For this purpose, the upper part 30 is widened on its side facing the upper side 19 of the roller shutter box 4. The lower part 31 of the reinforcing device 7 has a corresponding widening.

[0035] The contact surface 36 and the inclined surface 37, together with the screws 14, 14', 14'', form the second fastening device 6. The axial screw 14'' simply penetrates through the bore 24 of the contact surface 36 and a bore in the upper side 19 of the roller shutter box 4 before engaging the building ceiling 3. As in the previous exemplary embodiment, the axial screw 14'' is used in the first step to create a force-fitting fastening to the building ceiling 3, forming the joint 23. In the second step, a screw connection is created between the upper part 30 and the building ceiling 3 using the inclined screws 14'.

[0036] According to an alternative embodiment of the invention not shown, only a single oblique screw 14' or a plurality of oblique screws 14' can be provided.

[0037] The acute angle φ can range between 30° and 60°. In the present embodiment, the acute angle φ is formed as a 45° angle bisector.

[0038] The screws 14', 14'', 11 are preferably designed as self-tapping window frame screws for dowel-free fastening. A shaft of the screws 14', 14'', 11 preferably has a diameter of 7.5 mm. They have a head with a larger diameter than the shaft. QUOTES CONTAINED IN THE DESCRIPTION

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

[0000] DE 20 2015 102 179 U1

[0002] EP 3 091 167 B1

[0003] EP 2 636 839 B1

[0004]

Claims

[1] Device for mounting a window frame (1) in a building opening (2), wherein a roller shutter box (4) is arranged between the window frame (1) and a building ceiling (3), with a reinforcing device (7) that can be arranged within the roller shutter box (4), with a first fastening device (5) by means of which the window frame (1) can be connected to the reinforcing device (7), with a second fastening device (6) by means of which the building ceiling (3) can be connected to the reinforcing device (7), wherein at least the second fastening device (6) can be connected to the building ceiling (3) via a screw connection (14''), characterized by that the second fastening device (6) has fastening means (13, 17, 20, 36, 37, 14') so that a screw connection is provided at an acute angle (φ) to a surface (18) of the building ceiling (3). [2] Device according to claim 1, characterized byin that the fastening means of the second fastening device (6) has a contact surface (17, 36) which can be placed on an upper side (19) of the roller shutter box (4) and / or on a surface (18) of the building ceiling (3), and an inclined surface (20, 37) which is connected to the contact surface (17, 36) at the acute angle (φ), the inclined surface (20, 37) and the contact surface (17, 36) having bores which are aligned with one another, so that a screw (14') of the screw connection can be inserted into the surface (18) of the building ceiling (3) at the acute angle (φ). [3] Device according to claim 1 or 2, characterized by that the inclined surface (20, 37) and the contact surface (17, 36) are integrally connected to one another. [4] Device according to one of claims 1 to 3, characterized by that the inclined surface (20, 37) and the contact surface (17, 36) form an angle part (13) which is detachably connected to the reinforcing device (7). [5] Device according to one of claims 1 to 4, characterized by that the second fastening device (6) has a screw connection (14'') as fastening means, which is aligned perpendicular to the upper side (19) of the roller shutter box (4) and / or the surface (18) of the building ceiling (3). [6] Device according to one of claims 1 to 5, characterized by that the reinforcement device (7) has a tube (8) which, in an end region facing the building ceiling (3), has an axial guide for receiving an axial screw (14'') of the second fastening device (6), so that the axial screw (14'') is aligned perpendicular to the surface (18) of the building ceiling (3). [7] Device according to one of claims 1 to 6, characterized bythat the contact surface (17) of the angle part (13) has a bore (24) which, in the assembly position, is arranged in alignment with an axis of the pipe (8) and that the inclined surface (20) has a part-circular recess (25) against which the pipe (8) can be partially placed, so that the pipe (8) is arranged perpendicular to the surface (18) of the building ceiling (3) in the assembly position. [8] Device according to one of claims 1 to 3, characterized by that the contact surface (36) is connected in one piece to the reinforcing device (7) and that the inclined surface (37) is formed by bending or folding a projecting tab running in the plane of the contact surface (36). [9] Device according to claim 8, characterized bythat the reinforcement device (7) is designed in several parts with an upper part (30) and a lower part (31) which extend in the vertical direction (V) in the assembly position and which can be fixed relative to one another in the longitudinal direction (L) via an elongated hole connection. [10] Device according to one of claims 1 to 9, characterized by that the contact surface (17, 36) and the inclined surface (20, 37) enclose the acute angle (φ) which is in the range of 30° to 60°, preferably 45°. [11] Device according to one of claims 1 to 10, characterized by that the first fastening device (5) has a tubular cross strut (9, 34) which can be connected to the reinforcing device (7) and which can be partially or completely cut into in a free end region by a screw (11) passing through the window frame (1).

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