FASTENING DEVICE FOR FACADE ELEMENTS

Description

[0001] The present invention relates to a fastening device for facade elements, in particular for glass facades of buildings, which are to be attached to a frame structure or to the building's structural frame. The invention particularly relates to such fastening devices for facade elements which are provided with a metal frame or support elements and which, as a kind of prefabricated product, can be mounted on the buildings together with the panel-shaped facade elements, glass panes, metal sheets, or the like, using fasteners appropriate to the construction of the building facade.

[0002] Such fastening devices are used particularly for the installation of prefabricated glass facade elements. They are also used for mounting other facade elements on buildings, enabling the installation of these elements on the building shell or a prefabricated frame structure to create a large-scale outer skin, enclosing the weather side of the building. This presents challenges, firstly, in ensuring that the glass facades or other facade elements are securely and stably attached to the building. Secondly, due to the relatively large surface area of ​​the glass facade elements, the fastening devices must exhibit sufficiently high strength values ​​in terms of flexural rigidity and stability, even under strong winds or similar conditions, to meet the structural engineering requirements for such building constructions.Another problem with existing fastening devices for facade elements is that, at the points where the frame components, usually made of aluminum profiles, are attached, the fasteners create direct thermal bridges in the facade structure. Even when highly insulated glass surfaces, such as triple glazing, are used, the fastening devices, due to the metallic frame components required for stability, locally increase heat transfer between the exterior of the facade and the interior of the building.

[0003] To address this problem, fastening devices for facade elements have been proposed in the past, in which a metal frame or metallic profile element is used as the basic element of the fastening device and which are provided with a thermally reduced, essentially L-shaped retaining element that overlaps the outside of the facade parts, such as glass surfaces, as disclosed, for example, in EP 2 438 248 B1.

[0004] EP 3 480 383 A1 discloses a system for closing openings in buildings and building structures, particularly for curtain wall or structural facade systems, which is easy to install and provides two different magnetic and mechanical coupling arrangements on studs with cover elements. The magnets and a ferromagnetic element are positioned in a rear corner area of ​​the studs to ensure that the walls of the cover element are held in position in this area.

[0005] A support profile construction for window facades is known from DE 20 2005 015 537 U1, in which support profiles are attached to a metal support profile via corresponding grooves and projecting sections of the support profiles, wherein a seal as an elastic element is inserted into the grooves between the projections and the walls of the grooves, so that a seal and elastic coupling is created at two points between the elements.

[0006] This design has proven effective for the installation and thermal insulation of such glass facades on buildings. However, due to increasingly stringent regulations regarding energy efficiency and environmental policy requirements concerning the thermal insulation properties and CO2-saving measures of such building facades, there is a need for further improvements in insulation properties and corresponding thermal insulation values, as well as the use of CO2-neutral materials in these facade fastening elements.Furthermore, a disadvantage of the fastening devices known so far is that their application possibilities are comparatively limited, especially in the interior construction of buildings with such facades, since the inwardly projecting metal frames form the interior of the building in these areas or must be covered with extra interior frame parts if an alternative to conventional powder coatings is desired as a surface finish.

[0007] Against this background, the object of the present invention is to provide a fastening device for such facade elements, in particular glass facades of buildings, with which high-energy materials (e.g., aluminum) can be replaced or supplemented with low-energy or CO₂-neutral materials in line with climate protection goals (e.g., wood), while still fulfilling the static requirements regarding the flexural stiffness and strength of such facade fastenings. Furthermore, the fastening device according to the invention is intended to provide a fastening device optimized with regard to environmental aspects and sustainability, enabling cost-efficient manufacturing and easy assembly on the construction site.

[0008] This problem is solved by a fastening device having the features of claim 1. Advantageous embodiments and further developments of the invention are the subject of the dependent claims.

[0009] According to the invention, as defined in claim 1, a fastening device for facade elements is proposed, comprising a metal frame and a substantially L-shaped retaining element made of a heat-reducing material, which extends beyond the facade elements towards the outside and is detachably attached to the metal frame by means of fasteners. The metal frame is formed with at least one hollow chamber and comprises a facade retaining section and a support section extending from the facade element from an outside of the facade towards the inside, substantially perpendicular to the plane of the facade elements. The fastening device is characterized in that a beam module made of non-metallic material is provided on the support section of the metal frame, attached by positive locking at at least two fastening points spaced apart from one another.which extends at least sectionally over the length of the respective metal frame or metal frame part and which is coupled to the metal frame on an inner side of the facade element in such a way that, in the installed state of the fastening device, it is statically effective by means of a positive fit at at least two fastening points to increase the bending stiffness and torsional stiffness of the fastening device, and that at least one of the fastening points serving for the positive fit is realized in the form of a dovetail joint. The metal frame according to the fastening device according to the invention is thus no longer a purely metal frame, but has, on the support section provided on the inner side of the facade, a beam module formed from a second material, a non-metallic material such as wood, plastic or similar, which is responsible for the support function,The statics and stability of the fastening device, and thus of the facade as a whole, are designed and constructed.

[0010] The fastening device is thus equipped with a non-metallic beam module on the inside of the facade elements, which is attached to the support section of the metal frame by a positive fit in such a way that it is effectively integrated into the structure for structural purposes. The beam module, which can be, for example, a wooden beam, is attached to the metal frame at least two fixing points by a simple positive fit. The attachment is such that the at least two fixing points are spaced apart, so that the beam module significantly increases the stiffness and, in particular, the bending strength of the frame part of the fastening device in order to achieve the required overall bending strength of the facade fastening, which is prescribed for such facade elements, together with the metal part of the support section of the metal frame.The form-fitting connection method takes into account the specific properties of the individual materials and, in combination, creates a statically effective composite effect, thus fulfilling the project requirements regarding the bending and tensile strength of such facade fixings. Depending on their suitability for environmental stresses caused by weathering, the different materials within the structure are selectively used and arranged. The resulting long-term serviceability, in turn, leads to highly effective sustainability of the fixing system, as even at the end of its service life the structure can be easily disassembled into its individual components, recycled, or reused.Various aesthetic aspects relating to the surface design of the material combinations, as well as ecological and economic requirements, can be met with the fastening device according to the invention.

[0011] Since the additional beam module, which is attached to the fastening device by positive locking, is made of a non-metallic material, the thermal insulation value of the fastening device is significantly improved compared to purely metallic fastening devices of this type. Using a non-metallic material with a significantly lower thermal conductivity, such as wood, plastic, or other similar materials, the overall thermal insulation properties can be further optimized at the critical areas of the frame components of such facade fastenings, which are known as thermal bridges. Significantly improved thermal insulation properties can be achieved, which are particularly important for highly insulated multiple glazing. This invention thus significantly improves the energy efficiency and thermal insulation properties of buildings.Furthermore, the fastening device according to the invention can be implemented relatively easily using the positive locking mechanism. This can be achieved, for example, by providing the beam modules and corresponding counter-fastening points on the metal frame with grooves or recesses of the appropriate shape. This allows for a secure and structurally effective connection of the elements—namely, the beam module and the metal frame of the fastening device—through a purely positive locking mechanism, without the need for additional fastening methods such as gluing, screwing, etc. In certain application variants, additional fastening means for the beam modules on the metal frame can be provided alongside the purely positive locking mechanism.

[0012] The fastening device according to the invention also offers significant advantages with regard to fire protection regulations. Due to its hybrid design, more flammable elements such as wooden beam modules can be positioned entirely on the inside instead of the outside, and only metallic elements can be used at the connection points to the building ceilings. Therefore, no materials that are hazardous in this respect, such as wood or plastic, are required at the fire-critical transition between building floors.

[0013] The production of the facade fastening system is thus significantly simplified. Recycling or dismantling the devices is also easily possible according to the invention. The beam modules can be easily separated from the metal frame. Last but not least, the device according to the invention also makes it possible to achieve improved sustainability due to the CO2 neutrality of materials such as wood. The respective materials can be disassembled and recycled without causing any problems in the disposal of such building materials.

[0014] The fastening device according to the invention also significantly improves the design possibilities, the variety of options, and the variability in the construction of the interior of such facades: For example, different materials and shapes of beam modules can be used, depending on the requirements of the respective building structure. One is no longer limited to the purely metallic inner profiles of such frame components of fastening devices, which are essentially made of aluminum. Nevertheless, the device according to the invention offers a good and thermally highly insulated seal between the weather side and the interior, with improved overall thermal insulation for the entire building at the points of the frame components that are typically critical as thermal bridges.

[0015] Furthermore, the invention allows the beam modules to be used in different types, shapes, sizes, and dimensions without complex modifications, thus providing a high degree of variability in the design of the fastening devices for facade elements. Different shapes, sizes, or materials can therefore be easily used without requiring complex modifications to the fundamental design and thus the actual manufacturing process of the fastening device and its assembly via positive locking.

[0016] The proposed fastening device according to the invention incorporates a beam module, i.e., an element consisting essentially of a solid material such as a wooden beam or a beam made of another non-metallic material. In the assembled state, this beam module is firmly connected to the fastening device and its metallic components at at least two points by means of a positive fit with the supporting section of the metal frame. As a result, the beam module acts as a statically supporting element in addition to the supporting metal frame, which consequently requires a less robust construction and shape. This allows for the realization of relatively delicate facades. The fastening device nevertheless exhibits sufficiently high flexural strength and, due to the non-metallic beam module, offers significantly improved thermal insulation properties.

[0017] The at least two fixing points for the beam module on the support section of the metal frame are preferably provided in a section parallel to the facade surface and in a section of the metal frame projecting perpendicularly to the inside of the facade. This crosswise arrangement of the fixing points results in even greater rigidity of the overall facade fastening.

[0018] The invention is therefore directed to a fastening device for facade elements, which is particularly suitable for mounting and fixing glass facades to buildings and comprises a metal frame and an L-shaped retaining element which surrounds the facade elements, for example the window panes, on the outside, wherein the metal frame is provided with at least one hollow chamber and has a facade retaining section and a support section extending from the facade element from an outside of the facade to the inside, essentially perpendicular to the plane of the facade elements, wherein the fastening device is characterized in that a beam module or a cover profile made of at least partially non-metallic material is provided on the inside of the support section, attached by positive locking at at least two fastening points provided at a distance from each other.which extends at least sectionally along the length of the respective metal frame and which is coupled to the metal frame on an inner side of the facade element in such a way that, in the installed state of the fastening device, it is statically effective through positive locking or by fixation at the at least two fastening points to increase the bending stiffness and / or the torsional stiffness of the fastening device. At least one of the fastening points is realized as a dovetail joint. In this way, various types and shapes of elements can be attached to the support section of the metal frame of the fastening device in a modular fashion by positive locking at the two fastening points without additional fasteners. Combinations of non-metallic beam modules, for example wooden beams, are also possible.These components can be used in conjunction with metallic or non-metallic hollow profiles or cover profiles attached to the same metal frame. This allows the individual fastening devices to be easily and individually adapted to the specific structural conditions as needed. The combination of components nevertheless ensures a support function and increased static stability. The basic metal frames are directly connected to connecting elements, such as beam modules, profiles, or similar components, at the two spaced-apart fastening points by means of a positive fit. This ensures increased bending and torsional stiffness, even when using different materials for the beam modules, cover profiles, etc.

[0019] For example, a beam module consisting of a wooden beam can be attached to a central metal frame of such a fastening device according to the invention on one side via the two fastening points using positive locking connections, while on the opposite side, a cover profile made of an aluminum profile is attached using the same fastening points and fasteners. According to the invention, this provides a very high degree of modularity and variability in the application possibilities. The various individual components can be modified and reconfigured on-site as needed. The modular design also allows for easy repair of individual elements after damage or modification. With such a modular design of the fastening device, which can also be combined, the range of applications is thus significantly increased.High stability against forces acting on the facade and static strength are nevertheless ensured at all times, even with different material shapes or beam types or cover profiles.

[0020] According to a further advantageous embodiment of the invention, screw channels are provided on the support section of the metal frame of the fastening device at fixed, identical positions and in identical shapes for the flexible and modular mounting and reception of beam modules, cover profiles, fixing elements, or end profiles. The end profiles and beam modules can thus be easily fixed and attached to the respective screw channels on the metal frame of the fastening device without differentiation. It is not necessary to use different metal frames or additional fixing means such as screws, depending on whether beam modules, aluminum cover profiles, or connection profiles for further connection elements or technical equipment are to be provided on the corresponding inner surfaces of the fastening devices.As finishing profiles, profiles can be inserted into the screw channels, which are used to accommodate lighting fixtures such as LED strips, etc., or other technical functional elements. Alternatively, simple cover strips or decorative strips can be used on the inside (front) of the respective fastening devices in the building using cover profiles on the building's interior. These cover profiles are inserted into the screw channels and secured there, for example, by a positive fit. Finally, with screw channels designed to be identical in shape and position, different types of beam modules, profile covers, etc., can be securely fastened at the same fastening points or via the screw channels.The screw channels have the advantage that, for example, the elements can be inserted through simple protruding ridges on the elements and securely fixed there by the multi-point fixing according to the invention or by additional clips or elastic seals, etc.

[0021] According to the invention, the screw channels are provided on the respective metal frames at corresponding heights, for example, in the same planes relative to the plane of the facade elements. Furthermore, the screw channels are advantageously designed in the same configurations, particularly with regard to internal dimensions and receiving areas. Finally, the screw channels are preferably arranged in the same orientation according to the invention. For example, screw channels are provided at a free end on an inner side of the metal frames, pointing either inwards or towards each other, i.e., laterally and parallel to the plane of the facade elements.With similar or identical designs of the screw channels, a high degree of variability and application of the facade elements is possible when using beam modules preferably made of wood, at least sectionally or at least on one side of the fastening devices.

[0022] According to a further advantageous embodiment of the invention, end profiles, in particular profiles with a projecting plug-in section and a termination section, are provided on the inside of the facade element in the metal frame and can be inserted in a form-fitting manner. The end profiles thus have a T-shape, wherein the plug-in section, which can be inserted into the screw channels, is provided as a projecting web, for example, projecting straight or diagonally from the termination section that forms the actual termination. The termination section itself can, for example, be a straight or slightly curved profile wall section. Alternatively, the termination section can also have a U-shape or an O-shape and thus form an element for the functional integration of technical components such as LED lights or similar.The U-shape also has the advantage that the outer surface of the end elements can be fitted with additional plug-in or attachable elements, if necessary. An O-shape of such plug-in end profiles has the advantage of greater inherent stability and can also be easily adapted in size and dimensions to accommodate laterally attached beam modules, etc., or can provide additional support for them.

[0023] According to a further advantageous embodiment of the invention, at least on the support section of the metal frame of the fastening device, several screw channels with identical internal shapes are provided at identical positions and with the same orientation for the flexible attachment of profiles, modules, or fixings. Such identically shaped and arranged screw channels allow various types of connections, fixings, or beam modules to be easily and indiscriminately fixed and attached to one and the same basic element of the fastening device, namely the metal frame. The device has the advantage that, for example, when using additional elements for their fixation, the screw channels can be used by simply inserting them.On the other hand, such screw channels allow the various beam modules or cover profiles to be attached to the same fastening element of the facade in identical positions.

[0024] According to a further advantageous embodiment of the invention, end profiles with a substantially U-shaped cross-section are provided for receiving light sources or other technical equipment and for positive-locking insertion into the metal frame. The end profiles thus have U-shaped sections, either facing inwards towards the facade or oriented parallel to the plane of the facade elements, into which, for example, LED strips can be inserted as lighting elements and which can be closed off with covers. Such integration of U-shaped end profiles allows for the realization of further functionalities at the fastening devices of the facade elements on the interior side. Light sources can be integrated directly into the facade, and, for example, cable routing or similar elements can also be integrated into the fastening devices of the facade elements.Other technical functions can also be integrated in this way, such as ventilation ducts or heating / cooling pipes or similar.

[0025] According to a further advantageous embodiment of the invention, T-profiles are provided on the inside of the fastening device between the respective seals as interior finishing elements. When two opposing facade elements of adjacent window facades are combined in this way, the gap or joint between the two metal frames can be visually and technically sealed and insulated. The T-shaped profiles allow the adjacent interior surfaces of the two beam modules or cover profiles to be flush-mounted on the interior side. This creates a completely continuous interior surface at the transition point between adjacent facade elements. The insertable T-profiles can be made of plastic, metal, aluminum, or wood, depending on the specific requirements.The insertable T-profiles preferably have an integrated retaining element, such as a conical barb on an insertable part of the T-profile. This conical barb allows the T-profiles to be easily inserted and secured between, for example, opposing elastic seals. This ensures easy installation and removal. At the same time, a flexible seal is provided on the inside side, compensating for movement.

[0026] According to a further advantageous embodiment of the invention, the T-profiles between the two metal frames of the fastening device have a positive-locking fastening element, which is preferably provided to enable the floating mounting of additional cover strips or functional strips on an inner side of the facade elements. The positive-locking fastening elements for the cover strips can, for example, be provided in such a way that the T-profile has conically widened V-shaped features on the inner surface, which can engage with a corresponding V-groove of fastening strips, such as simple wooden or plastic strips. In this way, positive-locking and preferably also material-identical terminations can be achieved continuously on the inner side of the fastening devices.

[0027] According to a further advantageous embodiment of the invention, a metal frame of the fastening device combines beam modules made of non-metallic solid material with metallic or non-metallic cover profiles, each with a positive fit at at least two fastening points. In this way, different technical or spatial requirements can be easily met individually with one and the same fastening device. The metal frame, with its modular and essentially identical fastening means and shapes, is designed so that beam modules, for example made of solid wood, as well as metallic cover profiles or other types of support profiles can be attached to the metal frame at the respective fastening points without any distinction. The variability and the range of applications are thus significantly increased.This significantly increases on-site adaptability compared to conventional facade fixings of this type.

[0028] According to a further advantageous embodiment of the invention, a substantially U-shaped receptacle is provided on the metal frame of the support section on the side facing away from the beam module or the cover profile for fasteners spanning multiple components, in particular for transport or connection profiles. The support section thus has a substantially straight shape in the direction perpendicular to the plane of the facade elements, with U-shaped recesses provided on the inside of opposing support sections. Connections, for example, by means of flat steel, for fixing to facade elements of other floors above or below, can be integrated into these U-shaped recesses in the fastening device without protruding elements.On the other hand, the metal profiles or reinforcements required for the static connection to the building ceilings can also be easily installed in the U-shaped recesses and fastened there using appropriate fixing screws or similar devices. This ensures the secure integration and attachment of the fastening devices for facade elements according to the invention, also with regard to the fastenings on the building side (concrete ceilings) and adjacent facade elements or wall sections of the building.

[0029] According to an advantageous embodiment of the invention, at least one fastening point for beam modules or cover profiles of the metal frame provides both a positive locking element, in particular a dovetail-like web or the like, and a screw channel for attaching and fixing other elements or additional fixings such as set screws. The screw channel is, for example, incorporated into the extended V-section of the positive locking element on one end face and can be used to securely fix other elements when solid beam modules are not used. This further significantly increases the variability and range of applications, and the fastening device is ideally suited for a wide variety of applications and configurations, particularly with regard to the beam modules or cover profiles.

[0030] According to an advantageous embodiment of the invention, the support section of the metal frame essentially has an L-shape in cross-section corresponding to the shape and width of the beam module for a corresponding fit on the metal frame. The beam module thus rests flat against the side surfaces of the support section of the fastening device in at least two planes, resulting in an even better statically effective connection for increasing the stability of the structure at the connection points of the facade elements in two directions: firstly, in the direction of the plane of the facade element, and secondly, perpendicular to the direction of the facade element. This achieves high bending stiffness and torsional rigidity of the fastening device with the solution according to the invention.By supporting and flushly attaching the beam module to the L-shaped section in two planes, both inwards and laterally in the direction of the facade element, the interlocking design, achieved simply by placing the beam module onto the fixing points, results in increased stability of the entire structure while simultaneously providing excellent thermal insulation. The L-shape does not need to be a precise L and can vary according to the shape of the individual beam module attached to the fixing points: The width and surface area of ​​the beam module can be adjusted to ensure complete inward coverage of the interior.By applying the fastening device over a flat area in at least two planes, preferably also in a quasi-S-shape in several planes, a significantly increased stability and flexural rigidity of the fastening device on the facade elements can be achieved.

[0031] According to a further advantageous embodiment of the invention, the beam module is provided with recesses or grooves corresponding to the shape of retaining ribs or fixing projections of the attachment points on the metal frame or on the support section of the metal frame for sliding or attaching the beam module. The recesses or grooves, which can be easily milled into a wooden beam, for example, are provided essentially over the entire longitudinal extent of the respective beam module and are shaped to correspond to the respective retaining ribs or fixing projections of the projections or attachment points on the metal frame. This allows for a positive-locking and flush attachment of the modules to the support section of the metal frame simply by sliding them onto the support section.Manufacturing is therefore relatively simple and inexpensive, and can easily be prefabricated remotely from the installation site. Furthermore, the individual elements can be readily recycled, as the separation of different materials is possible simply by removing the beam modules from the metal frame components.

[0032] According to a further advantageous embodiment of the invention, the beam module essentially has an L-shape in cross-section with one leg of the L covering the metal frame on the inside of the facade. In this way, the beam module can completely cover the metal frames on the inside of the facade (building interior) on several levels and in several directions. Thus, the metallic base structure of the fastening device is no longer necessarily visible from the inside. The covering with the beam modules also has the advantage that contact surfaces between the beam module and the metal frame are provided virtually on several levels and in several directions, perpendicular and parallel to the facade plane, which in turn increases the stiffness, bending strength, and torsional stiffness of the assembled fastening device.The fastening device is therefore even more stable than before, despite the significantly improved values ​​regarding thermal insulation, sustainability (CO2 neutrality) and the possibility of recycling the individual sorted elements.

[0033] According to a further advantageous embodiment of the invention, the beam module is a wooden beam or a beam made of a wood-based material, in particular a wood composite. The beam module can thus advantageously be formed from a wooden beam, for example, made of solid wood, or from a material made of layers of wood or wood chips, such as particleboard, MDF, or similar materials. The beam module can also be a wood composite in which several layers of wood or wood strips are glued together to ensure the durability of the beam module. Wood materials can also be combined with, for example, plastic components as a composite material.A beam module constructed in this way offers the advantages of a wood-based material, particularly significantly improved thermal insulation, sustainable manufacturing, ease of processing for integration with metal frames, and overall lightness compared to other materials such as metals. Furthermore, the use of diverse materials like wood for the beam module provides greater design flexibility and freedom in interior construction. Different rooms with differently designed fastening systems and differently constructed beam modules can also be easily created, as individual elements can be easily replaced by simply snapping the modules into place. This provides a complete modular system for facade mounting.

[0034] According to a further advantageous embodiment of the invention, the beam module is arranged at a distance from a weather-side seal of the fastening device in the direction of the exterior of the facade. This ensures that the beam module does not come into direct contact with external weather influences such as moisture, cold, or heat. The exterior of the facade and the fastening device for the facade is essentially comprised of weather-resistant components, namely the facade retaining element, an L-shaped retaining element made of plastic with reduced thermal conductivity, and the glass elements themselves as facade elements.The statically effective beam module itself, which can be a wooden module, is, however, arranged at a distance from the seal to the outside between these elements and the inside of the building, so that no adverse effects from moisture, dampness or weather conditions can occur here on the beam module.

[0035] According to a further advantageous embodiment of the invention, the beam module is arranged at a distance from the facade element itself by means of a section in the form of a hollow chamber in the metal frame. This has the advantage that any condensation that may occur on the inside, often at the edge of such window facades, cannot reach the beam module. The beam module is thus reliably protected from saturation or moisture buildup and thus from damage in these areas, which are critical for the thermal insulation of glass facades.

[0036] According to a further advantageous embodiment of the invention, the beam module is arranged essentially directly adjacent to the facade element or to a seal of the facade element. With this configuration, the metal frame structure can be completely covered on the inside by the beam module. This results in larger, statically effective surfaces for the positive-locking connection between the facade element and the beam module, on several levels. This further increases the stability and bending stiffness of the entire fastening device. Furthermore, only the beam module itself is visible on the inside, and the underlying metal frame structure is completely covered by the beam module. This expands the material options for interior finishing.

[0037] According to a further advantageous embodiment of the invention, at least one of the fastening points of the fastening device, which serve for positive locking, is realized in the form of a dovetail joint. The dovetail joint can be realized, for example, by having a conically outwardly widening projection in the support section of the metal frame and by milling a corresponding conically inwardly widening groove in the beam module. This allows the beam module to be easily fixed by simply pushing it into place, and with such a fastening point in the form of a dovetail joint, fixation is achieved not only in one direction (perpendicular to the plane of the facade element), but virtually in two directions, namely also in a direction parallel to the plane of the facade element.The dovetail joint thus increases the stability of the connection and the overall stability of the fastening device with regard to bending stiffness, which is an essential point for such facade elements.

[0038] According to a further advantageous embodiment of the invention, at least one of the fastening points serving for positive locking is realized in the form of a tongue-and-groove connection. This type of connection for positive locking between the beam module and the metal frame has the advantage that a secure plug-in connection is achieved by simply milling a straight groove along the entire longitudinal extent of the beam module and by providing a simple, projecting, straight web on the support section of the metal frame, either by pushing or sliding the components together. Positive locking can thus be ensured with relatively simple means. The two fastening points can also have alternative configurations with regard to positive locking, as long as they enable a positive-locking connection and fixation to increase bending stiffness.For example, instead of a dovetail joint, a tongue and groove joint on both sides can be used. Conversely, other types of joints are also possible that allow for a secure fixation of the beam module. For instance, webs running diagonally to one longitudinal direction of the support section and corresponding diagonal grooves in the beam module are conceivable to achieve support in two directions without requiring tapered shapes (dovetails).

[0039] According to a further advantageous embodiment of the invention, the facade element comprises a multi-pane insulating glass unit with at least two, preferably three, glass panes. This further increases the insulating effect of the facade elements. The fastening device for the facade element, together with the high thermal insulation properties of the glazing, results in an overall improved thermal insulation value, so that, particularly in the critical corner areas of the frame components, which, due to the metal, typically have a lower temperature than the plastic parts or seals, critical areas with moisture, condensation, etc., do not occur. Instead of multi-pane insulating glass, the facade element can also comprise other elements that are attached to facades, for example, metal or stone panels, individual elements, or the like.Even with such elements, the fastening device according to the invention has the advantage that, due to the beam module on the inside of the fastening device, it has a significantly better thermal insulation value than conventional fastening devices of this type with a frame construction made of essentially metallic elements.

[0040] According to a further advantageous embodiment of the invention, the L-shaped retaining element on the outside of the fastening device is made of a plastic or a plastic composite material and is detachably attached to the metal frame by screws that can be countersunk inside the retaining element. This significantly simplifies the assembly and installation of the fastening devices and facade elements. The facade elements, together with the beam module, the metal frame, and the facade element (glazing), can be prefabricated in a factory and then easily fixed on-site using the retaining elements. This enables fully automated prefabrication, resulting in significantly lower costs than assembling the individual elements, support elements, facade elements, sealing elements, and retaining elements, etc., on-site.

[0041] According to a further advantageous embodiment of the invention, sealing gaskets are provided on the beam module or on the support section of the metal frame facing the inside of the fastening device. These gaskets prevent the ingress of dust, moisture, or the like. Furthermore, they enable the support and damping of vibrations or movements between the individual elements of the fastening devices on the inside, particularly in conjunction with the beam module. They also prevent the ingress of cold into the building interior.

[0042] According to a further advantageous embodiment of the invention, retaining clips made of metal or spring steel are provided between the metal frame and the facade element. These clips have a first leg for engaging the facade element on its front or outer side and a second leg for engaging with or bearing against the retaining section of the metal frame. The retaining clips thus formed serve to cushion and secure the fastening device to the facade elements. This absorbs the sometimes very high compressive forces, lateral forces, and movements of the individual elements of a building facade and effectively cushions them through the elasticity of the retaining clips. As a result, the fastening device exhibits even greater strength, high stability, and flexural rigidity while still providing the best possible cushioning of forces and movements of the structural elements.The retaining clips act as a structurally effective link between the facade element and the supporting structure. This improved mechanical securing guarantees the fall protection of the glass panels.

[0043] Further advantageous embodiments, features, and aspects of the invention will be described in more detail below with reference to several exemplary embodiments in conjunction with the accompanying drawings to illustrate possible realizations of the invention. The drawings show: Fig. 1 a cross-sectional view of a first embodiment of a fastening device according to the invention with a beam module, using triple glazing as a facade element as an example; Fig. 2 a perspective view of a second embodiment of a fastening device according to the invention with a beam module and triple glazing; Fig. 3 a perspective view of a third embodiment of a fastening device according to the invention with a beam module and triple glazing; Fig. 4 a cross-sectional view of a fourth embodiment of a fastening device according to the invention with two different shapes of beam modules; Figs. 5a, 5b and 5c cross-sectional views of examples of different shapes of end profiles for use in a fastening device according to the invention; Figs. 6a, 6b and 6c cross-sectional views of examples of alternative shapes of metal frames for fastening devices according to the invention; Fig.Fig. 7 A cross-sectional view of a fifth embodiment of a fastening device according to the invention, combining a beam module and a metal cover profile; Fig. 8 A cross-sectional view of a sixth embodiment of a fastening device according to the invention with various cover profile alternatives while maintaining an identical metal frame; Fig. 9 A cross-sectional view of a seventh embodiment of a fastening device according to the invention, with wooden beam modules on both sides and an internally provided cover strip; and Fig. 10 A cross-sectional view of an eighth embodiment of a fastening device according to the invention, showing the connection elements to fastening devices above or below, as well as to building ceilings.

[0044] In Fig. 1 bis Fig. 10 Various embodiments of fastening devices 10 according to the invention for facade elements 2 in the area of ​​glass facades or other facade parts for buildings are shown. Fig. 1 shows a first embodiment in a cross-sectional view, wherein the embodiments of the Fig. 2 und Fig. 3 They differ only in some design details, so the description of the exemplary embodiments, with the exception of the differences, is given jointly using the same reference numerals for the elements. Fig. 4 bis Fig. 10 show further embodiments of the invention.

[0045] The fastening device 10 serves for mounting and attaching facade elements 2 with a metal frame 1. The facade elements 2 are preferably glass facade elements, such as triple glazing of a fixed insulating glass unit with three glass panes 3 on the right side. Fig. 1 bis Fig. 3 The fastening device 10 is shown. However, it serves to fasten and mount various facade elements 2 and can, for example, also be used for fastening unfixed window elements 20 for opening or other panel-shaped facade elements 2 as glass facades. The fastening device 10 according to the invention essentially comprises a metal frame 1, which is realized from a facade retaining section 12 provided on the side of the facade element 2 in the form of at least one or more hollow chambers 14 of a metal profile. The metal frame 1 is further formed on the inside of the building, i.e., on the inward-facing side extending from the facade element 2, with a support section 13, which, together with a beam module 4, serves to hold and stabilize the fastening device 10 in the installed state.Such fastening devices 10 are mounted, for example, on the frame of a building shell or on the building shell itself and are preferably used for the large-area formation of the entire outer facade to protect against the weather side of the building.

[0046] The fastening device 10 according to the invention is provided with a substantially L-shaped retaining element 5 attached to the metal frame 1, which can be detachably fastened to the facade support section 12 of the metal frame 1 by means of screws 11, with one leg of the L-shaped retaining element 5 extending outwards and overlapping the facade element 2, in these examples a glass facade. The fastening device 10 further comprises various seals on the side of the facade element 2 support and a rib-like seal 6 provided on the weather side in the interior of the fastening device 10. A seal 9 is also attached to the inward-facing side at the end of the support section 13 of the metal frame. The seal 6 serves to seal against external moisture, preventing it from penetrating the interior of the fastening device and the building.The optional seals 9 provided on the inside at the end of the support section 13 serve to seal against dirt, dust, and the like. On the outside, a seal 22 is inserted into grooves provided for this purpose between the facade support sections 12. According to the invention, the fastening device 10 on the support section is provided with a beam module 4 which is attached to the support section 13 by means of a positive fit. The beam module 4 is preferably made of wood or a wood-based material, but can also comprise other non-metallic materials.

[0047] According to the invention, the beam module 4 is connected to the support section 13 of the metal frame 1 via a positive fit at at least two fastening points 7, 8. This means that the beam module 4 is mounted onto the metal frame 1 by simply sliding or snapping it onto the frame by means of the corresponding elements and recesses at the respective fastening points 7, 8. The positive fit is ensured by the fact that the beam module 4 also rests against the surfaces of the essentially L-shaped support section 13 in a corresponding shape and configuration in two mutually perpendicular planes. As shown in Fig. 1 bis Fig. 3 As can be seen, in this embodiment the beam module 4 is also essentially L-shaped, so that at the end section on the inside of the facade element 2 it slightly overlaps the metal frame 1. In the embodiment according to Fig. 3 Furthermore, the beam module 4 is designed such that it also projects towards the facade element 2 in the form of the three glass panes 3, extending to the glass panes 3 or a seal between them – thus forming a kind of double-L shape for a form-fit connection. This results in an even larger area of ​​form-fit connection between the beam module 4 and the metal frame 1, and therefore a higher static effectiveness of the beam module 4.

[0048] While the metal frame 1 is manufactured from a metallic material such as aluminum using an extrusion process, the additional stability and flexural rigidity of the fastening device 10 is achieved with a beam module 4 made of a non-metallic material, which is attached via a positive fit. According to the invention, this allows for improved thermal insulation properties while maintaining sufficiently high flexural strength, which is a crucial factor for such facade elements or fastening devices 10. The flexural rigidity is ensured by positively fitting the beam module 4 to the support section 13 of the metal frame 1 at at least two mounting points 7, 8 spaced apart from each other. In the illustrated embodiments of the Fig. 1 bis Fig. 3 The fastening point 7 is realized with a positive locking mechanism similar to a dovetail joint, in that an outwardly widening retaining web is attached to the metal frame 1 ( Fig. 1 ) or a conically widened retaining bridge made of solid material ( Fig. 2 und Fig. 3 ) and a corresponding groove is provided on beam module 4. At the fastening point 8 between beam module 4 and the support section 13 of the metal frame 1, a simple tongue-and-groove connection is provided in the illustrated embodiments. This can be produced by machining a continuous groove extending along the entire length of beam module 4, corresponding to the shape and dimensions of the projecting web at fastening point 8 of the metal frame 1.

[0049] The shapes and types of various possible positive-lock connections at the fastening points 7, 8 can vary according to the invention. More than two fastening points 7, 8 can also be provided between the metal frame 1 and the beam module 4, as long as the connection and assembly are achieved via a positive lock. The beam modules 4 are, for example, realized as wooden elements, thus offering high sustainability, CO₂ neutrality, and very good thermal insulation properties in addition to the thermal insulation provided by the L-shaped retaining element 5 for the fastening device 10, which is made of non-thermally conductive material. This also allows for improved thermal insulation values ​​on the interior side of the building, which were previously not possible with purely metallic frames 1 of fastening devices 10.

[0050] Last but not least, the invention offers further advantages with regard to improved recyclability. By combining it with single-material components, such as wood for the beam module 4 and aluminum for the metal frame 1, the individual parts of the fastening device 10 can be easily and environmentally recycled during disposal without significant effort. Furthermore, the sustainability of using wood as the material for the beam module 4 is very high, and CO₂ neutrality, which is becoming increasingly important in the construction industry, can be significantly improved. The fastening device according to the invention nevertheless exhibits the strength values ​​necessary for such glass facades, in particular high torsional rigidity and flexural strength.The combined strength values ​​of the beam module 4 and the metal frame 1 achieve comparable strength values, albeit with only slightly larger dimensions, as with purely metallic fastening devices of this type. This is achieved, in particular, according to the invention, by the beam modules 4 being attached to the metal frame 1 with a positive fit, such that the beam modules 4 themselves also contribute statically due to the positive fit at the two fastening points 7, 8.

[0051] The beam modules 4 do not need to be mounted to the metal frame 1 using other complex, separate fastening elements, such as screws or adhesives. The use of screws as fasteners would, in any case, lead to an undesirable weakening of the material and the core of the beam modules 4, which in turn is unsuitable for mounting, for example, comparatively thin wooden elements as beam modules 4. Therefore, according to the invention, not only the structural integrity but also the design possibilities for the interiors of such buildings are significantly increased. Different shapes of beam modules can be used as needed without the need for internal fasteners such as screws, for example, to create a wooden interior finish in the buildings. As in the example of the Fig. 3 The wooden beam module 4 completely covers the metal frame 1 on the inside, extending to the facade element 2. This effectively conceals the metal part of the metal frame 1 from the inside, rendering it invisible. Furthermore, additional elements can be attached to the beam modules 4, which was not easily possible with previous all-metal fastening devices 10. For example, additional functions, components, or elements can be easily attached to the inside of the beam module 4 without requiring complex screws or similar fasteners.

[0052] The fastening device 10 according to the invention is manufactured by simply milling grooves in the beam module 4 that correspond to the fastening points 7, 8, and by extruding or continuous casting metal profiles, for example made of aluminum, for the metal frame 1 in the corresponding shape of the positive-locking connecting elements at the fastening points 7, 8. Subsequently, the beam module 4, of the appropriate length, can be easily and securely mounted to the metal frame 1 by simply sliding it onto the fastening device 10 and is immediately ready for use and structurally effective in the completed building. The fastening devices 10 according to the invention can thus be very efficiently prepared in series in a single manufacturing process and then only need to be assembled on-site in the conventional manner, namely by mounting and fixing them to a frame of the structural shell or to the building shell itself.

[0053] According to the exemplary embodiments of the Fig. 1 and the Fig. 2 The beam module 4 is positioned at a distance from the inner side of the facade element 2 by a section of the facade support section 12 in the form of a hollow chamber 14. This spacing prevents any residual moisture, which often occurs at the corners of glass facades of facade elements 2, from reaching the beam modules 4, which are made of wood, for example. This ensures the long-term durability and strength of the beam module 4. Alternatively, the beam modules 4 can also be made of materials other than wood or wood composites: for example, beams made of plastic, stone, glass, or other recycled products can be used to vary the interior design of the building as needed.Preferably, the beam modules 4 are made of a material with better thermal insulation properties compared to metal and are, for example, made of plastic or wood, such as solid wood. Such beam modules 4 can be easily attached to the support sections 13 of the metal frames 1 by positive locking using appropriate tongue and groove joints, dovetail joints, or other positive locking connection methods. In the illustrated embodiments, a retaining clip 15 is also attached to the facade support section 12 of the metal frame 1 on the side of the facade element 2, the latter being gripped externally by the retaining clip 15 and providing a spring effect on one side of the metal frame 1 or the support element 5. The retaining clips 15 have a slightly bent V-shape and are, for example, implemented as stainless steel leaf springs.This allows the forces to be absorbed more effectively even in strong gusts of wind or similar conditions, and the strength and stability of the fastening device 10 is further increased. This additional mechanical securing device also ensures that the facade elements are protected from falling.

[0054] The essentially L-shaped retaining element 5, which is attached to the outside of the facade element 2 on the metal frame 1 with countersunk screws 11, is preferably made of plastic. Plastic has a lower thermal conductivity than metal, so that the formation of thermal bridges is further prevented and even better thermal insulation properties can be offered in the area of ​​the fastening device 10.

[0055] The Fig. 4 bis Fig. 10 Further embodiments of the invention are presented to illustrate the high modularity and versatility in the adaptation possibilities of the fastening device 10 according to the invention with different beam modules 4 or cover profiles 16 and various shapes of metal frames 1. The further embodiments of the Fig. 4 bis Fig. 10 can be combined with the previous examples of the Fig. 1 bis Fig. 3 They can also be combined with regard to the distinguishing features described here. Since the basic function and structure of the fastening devices 10 are the same in both the already described embodiments of the Fig. 1 bis Fig. 3 including those of the examples Fig. 4 ff., identical elements and parts that are marked with the same reference symbols will not be described repeatedly, even if they are fully included in the respective further examples.

[0056] In the fourth embodiment according to the cross-sectional view of the Fig. 4 The fastening device 10 has a slightly differently shaped metal frame 1 compared to the embodiment of the Fig. 1 The metal frame 1 is formed in such a way that screw channels 17 are provided on it, which are open inwards (inside of the facade), i.e., perpendicular to the plane of the facade elements 2. The screw channels 17 serve for inserting end profiles 18 according to the invention, which can be provided in different shapes and optionally complement the previously described elements of the fastening devices 10, in particular the beam modules 4, cover profiles 16 and metal frame 1.

[0057] In another respect, namely with regard to the fastening points 7 and 8 for the beam modules 4, which are provided, for example, as wooden beams, the arrangement and design of the metal frames 1 is essentially the same as in the first embodiment of the Fig. 1 The shape and position of the conically widened fastening points 7, as well as the shape of the second fastening points 8 as tongue-and-groove elements, are identical, so that various beam modules 4 or different cover profiles 16 can be inserted into the metal frames 1 at the support section 13 of the fastening device 10 without distinction, as required. The positive locking for fastening the beam modules 4 or the cover profiles 16 is therefore present on both sides of the fastening device 10 (left and right). Fig. 4 ) identical and can thus be used for different designs of the geometric terminations on the inside, namely the building interior, with such termination profiles 18 or other elements.

[0058] As can be seen in the cross-sectional view of the Fig. 4 As shown, various end profiles 18 are inserted into the screw channels 17 located on the uppermost side (inside) as needed. For beam module 4 on the left side of the Fig. 4 A substantially T-shaped end profile 18 with a diagonal plug-in section 18.1 is provided, which can be fixed by positive locking and insertion into the correspondingly shaped screw channels 17. The end profile 18 further has an end section 18.2, which is designed in a straight, angled shape to conform to the L-shaped cantilever of the left beam module 4 on the inside. The end profile 18 is fixed by a slight, flexible pressure via seals 9, which are inserted between the two left and right metal frames 1 to close the joint.

[0059] On the right side of this embodiment of the Fig. 4 An alternative form of an end profile 18 is shown, namely an end profile 18 with a plug-in section 18.1, which, due to its shape and form, can be inserted into the screw channel 17 and fixed there. The end section 18.2 is formed here by an essentially U-shaped receptacle, which serves as a light strip for receiving a light source 18.3, for example, an LED light. At the upper end, the end profile 18 is closed by a plastic cover 18.4, so that a lighting effect with a strip-shaped light source along the mounting device is provided for the illumination of the building's interior. The beam module 4 on the right side of the Fig. 4 In this embodiment, the end profile 18 is slightly projecting and has a rounded edge on one side. Alternative shapes and various geometric terminations on the beam module 4 can be selected without modification to design the interior according to specifications or to accommodate architectural variations and requirements. Both beam modules 4 are fixed here as well via at least two fastening points 7, 8, which secure the beam modules 4 to the metal frame 1 of the fastening device via a positive fit. The type of positive fit can again be either a dovetail joint or a tongue-and-groove connection. Alternative forms of positive fit are also conceivable, for example, circular or semicircular projections that engage in correspondingly shaped grooves on the beam modules 4 or on receiving sections of cover profiles 16.

[0060] In addition to the different shapes, dimensions, and thicknesses of the beam modules 4, different geometric terminations can be inserted into the fastening points 7, 8 in a modular fashion, while maintaining the same design of the metal frames 1 forming the basic structure. For example, metallic cover profiles 16 or profiles made of plastic or non-metallic materials can be attached to the metal frames of the fastening device to increase bending stiffness and torsional rigidity. The material type and shape of the beam modules 4 can vary according to the specific room. For example, in wet areas, corresponding metallic cover profiles 16 or plastic modules can be used instead of wooden beam modules 4. The termination profiles 18 on the inside of the facade elements 2 can have various shapes and fulfill technical functions.They can be used, for example, as light strips, cable channels, or simply as decorative finishing elements. By simply inserting them into the screw channels 17, the finishing profiles 18 are securely fixed in place by the slight pressure exerted by the seals 19, without the need for screws, etc. In the case of the... Fig. 4 In the illustrated embodiment, an optional T-profile 21 with a kind of arrow-shaped barb is inserted between the two abutting flexible seals 9. The T-profile 21 can further flush the finish and also serve to color the butt joint between the two laterally provided metal frames 1 of the fastening device. Alternatively, instead of left and right versions for the respective fastenings of the facade elements 2, the metal frame 1 can also be provided in a single piece, as shown with reference to the Fig. 6a und Fig. 8 as described further below. Even with this shape, the height, position and form of the respective screw channels 17 and the fastening points 7, 8 are identical, so that modular adaptation and interchangeability of the connection elements for the fastening devices 10 is ensured.

[0061] In Fig. 5a, 5b und 5c Several examples of alternative forms of graduation profiles are shown in Figure 18. Figur 5a Figure 1 shows an example of a cross-section of the end profile 18, in which a U-shaped end section 18.2 and a diagonally downward-extending plug-in section 18.1 with recesses or a profile are provided. The diagonally extending plug-in section 18.1 is a kind of extension of the right arm of the " U" and is provided with recesses and projections which fit into the screw channels 17 formed for this purpose (cf. Fig. 4 ) can be used. By inserting them, a kind of positive fit is achieved, which allows the end profiles 18 to be fixed in the screw channels 17, either together with lateral pressure from a seal 9 or an extra retaining element, or by the beam modules 4 or cover profiles 16 attached to them (see ). Fig. 4 ). In the U-shaped image 18.2, the example of the Fig. 5a A light source 18.3 is inserted and sealed with a cover 18.4, for example made of plastic. The light source 18.3 can, for example, be an LED strip that provides linear illumination of an interior space of the building. The U-shaped end section 18.2 of the end profile 18 can also be used for other purposes, for example as a cable duct or as a holder for other elements or connection parts located inside the building. In the further example of the Fig. 5b A cross-section of an end profile 18 is shown, in which an identical plug-in section 18.1 to the previous example is present. Here, the U-shaped end section 18.2 points laterally to the left (parallel to the facade plane) instead of upwards, so that the luminous effect of the light source 18.3 allows, for example, indirect lighting of a building interior. The further example of Fig. 5c Figure 1 shows a cross-section of an O-shaped end profile 18, which can be positively fitted into the screw channels 17 of the fastening device 10 by means of the plug-in section 18.1. This allows for variations in color design on the inside. The end profiles 18, as shown here, can also have a simple T-shape, as shown on the left. Fig. 4 The end profiles 18 shown are characterized by a straight or slightly curved shape, with the end section 18.2 being either straight or slightly curved. The end profiles 18 according to the invention can thus be easily inserted and fixed into the corresponding screw channels without tools or additional fasteners, making assembly and disassembly significantly simpler than with previous elements of this type.

[0062] Some examples of different alternative forms of the metal frames 1 for the fastening devices 10 according to the invention are shown in Fig. 6a, 6b und 6c shown in cross-sectional views. Fig. 6a Figure 1 shows, for example, a metal frame 1 on the fastening device 10, which is designed for the two-sided attachment of beam modules 4 or cover profiles 16. Instead of the split form of the metal frames 1 for a left and a right side of the fastening device 10, as in the previous examples, a one-piece metal frame 1 is provided here, on which the positive-locking fastening points 7, 8 for the beam modules on the support section 13 and several screw channels 17 are provided. The facade fastening section 12 also has the corresponding screw channels and receiving grooves for the fastening screws for the L-shaped retaining elements 5 (not shown) for a left and a right facade fastening.The metal frame 1 thus formed therefore has a self-contained shape with uniform hollow chambers and interiors, and on the outside are the fastening points 7, 8 to be used for the positive connection with the beam modules 4.

[0063] Figur 6b und 6c Figure 1 shows two examples of a metal frame 1 in which the cover profile 13 is virtually integrally formed on one side. These forms of metal frames 1 can be described in the fifth embodiment of Figure 1. Fig. 7 to be used to provide a modular structure for a building facade, combining beam modules 4 on the one hand and cover profiles 16 made of, for example, aluminum profiles on the other. In the Fig. 7 On the left side, a beam module 4 is provided via the two positive-locking fastening points 7, 8 in an L-shape, i.e., extending towards the interior of the building. On the right side, the metal frame 1 of this fastening device 10 is integrally formed with an aluminum profile or cover profile 16. Both elements can be combined as desired, depending, for example, on whether a living space, a wet room, or specific fire protection requirements are to be realized and taken into account. This allows the fastening device 10 of the invention to be modified in a modular fashion in a variety of ways according to the respective requirements, without the need to use different shapes of metal frames 1 as the basis of the fastening device 10 in each case.

[0064] Also in Fig. 8 Figure 1 shows a cross-sectional view of a sixth embodiment of the fastening device 10 according to the invention, in which the one-piece form of the metal frame 1 with left and right sides corresponding to the Fig. 6a is used. On the left side of the Fig. 8 A cover profile 16, for example made of aluminum, is provided with an essentially L-shape and extends to the glass front of the facade elements 2 by simply inserting a mounting lug into the upper screw channel as a first mounting point 7 and a protruding section into the groove or recess of the second mounting point 8. On the right side, a different cover profile 16 is shown here, which is inserted on the support section 13 almost flush with a side area of ​​the hollow chamber of the metal frame 1. In place of this cover profile 16, a beam module 4 made of non-metallic material, as shown in the Fig. 8 The schematic diagram shows how the elements can be used. It is also possible to incorporate a change of different materials or modules within a facade element, for example, aluminum cover profiles 16 combined with some wooden beam modules 4. The corresponding fixing points 7, 8 are designed identically for both types of fixing of the respective elements 4, 16. This ensures a high degree of flexibility and modularity of the fixing device 10.

[0065] A seventh embodiment of the fastening device according to the invention is shown in a cross-sectional view of the Fig. 9 As shown, at the upper attachment points 7, the metal frame 1 on the support section 13 has conically widened elements with integrated screw channels 17. The wooden modules 4 have corresponding milled grooves for fitting onto the projections at the attachment points 7. In this embodiment, the beam modules 4 also have a centrally projecting conical web that engages in the opening of the screw channels 17 at the attachment points 7 to further increase the stability and strength of the connection between the beam module 4 and the metal frame 1. Here, the beam modules 4 are implemented as simple wooden beams without an L-shaped section. On the inside of the facade elements 2, an optional cover strip 19 is provided as a finish against the metal frame 1, which is inserted between the two beam modules 4 via a type of floating bearing.For this purpose, essentially L-shaped profiles are provided as end profiles 18, which are inserted into the screw channels 17 by means of a plug-in section 18.1 and held there in a form-fitting manner. The end section 18.2 is slightly curved and engages in a corresponding lateral groove of the seals 9, which, by means of slight elastic pressure outwards, hold the end profiles 18 in their position. A T-profile 22 is inserted centrally between the two seals 9 by means of a kind of barb (arrow shape of part 22) and has two conically projecting ribs on its upper surface. These ribs are formed to correspond to a conically widened groove in the cover strip 19, so that the floating mounting of the cover strip 19 between the two wooden modules 4 with a relatively small tolerance of a few millimeters and compensation for movement is possible.This type of floating mounting of the cover strip 22 provides a fully enclosed fastening device 10, even in the space between the beam modules 4, which can be implemented, for example, entirely in wood materials. However, a cover strip 19 can also be made of other materials such as plastic or aluminum, depending on the requirements and intended use of the fastening device 10.

[0066] The Fig. 10 Figure 8 shows a cross-sectional view at the level of the connection to a building ceiling 26, illustrating an eighth embodiment of a fastening device of the invention. As in the previous embodiments, a U-shaped receptacle 25 is provided on an inner side of the metal frame 1 at the level of the support section 13. A steel flat 23 engages in this receptacle for fastening to adjacent, above- or below-placed fastening elements of the facade. The steel flat 23 is fixed in the receptacle 25 by means of screws. Furthermore, fixing profiles 24 are provided for connecting and fastening to a concrete ceiling 26 of the building. Fig. 10 The upper surface is formed with a T-shape and eyelet shape and is embedded in the material of the concrete slab 26 to transfer the forces to the building. The fastening device 10 according to the embodiment of the Fig. 10 Here too, the facade is equipped with laterally attached beam modules 4 via positive locking, which are fastened at at least two fixing points 7, 8. The glass panes 3 are inserted as facade elements 2 on the facade support section 12 and are held there by an L-shaped support element 5 (not shown in the figure). Fig. 10 ) and corresponding retaining clips 15 fixed (see Fig. 1 bis Fig. 3 ). Even in the eighth embodiment of the Fig. 10 The metal frames 1 are provided with screw channels 17 that are identical in shape and position and can be used for mounting, for example, end profiles 18 or for holding aluminum cover profiles 16 or wooden beam modules 4. This embodiment also features... Fig. 10 This results in a high degree of modularity, as different types of connection elements, cover elements or statically effective beam modules can be used in various ways depending on requirements.

Claims

1. Fastening arrangement (10) for facade elements (2), in particular glass facades of buildings, having a metal frame (1) and having an L-shaped holding element (5) which overlaps the facade elements (2) towards the outside and is made of a material which reduces the heat conduction, which is detachably fastened to the metal frame (1) via fastening means (11), wherein the metal frame (1) is formed with at least one hollow chamber (14) and comprises a facade holding section (12) and a supporting section (13) pointing inwards from the facade element (2) from an outside of the façade essentially perpendicular to the plane of the facade elements (2), characterized in that a beam module (4) or cover profile (16) made of at least partially non-metallic material is provided on the supporting section (13), which beam module or cover profile is attached by positive fitting to at least two fastening points (7, 8) provided at a distance from one another, extends at least in sections over the length of the respective metal frame (1) and is coupled to the metal frame (1) on an inner side of the facade element (2) such that, in the installed state of the fastening arrangement (10), it is statically effective due to the positive locking at the at least two fastening points (7, 8) to increase the bending stiffness and the torsional stiffness of the fastening device (10), and that at least one of the fastening points (7) used for positive fitting is realized in the form of a dovetail connection.

2. Fastening arrangement (10) according to claim 1, characterized in that screw channels (17) are provided on the supporting section (13) of the metal frame (1) at respectively fixed identical positions and in identical shapes for the flexible and modular mounting and reception of beam modules (1), cover profiles (16), fixing elements or end profiles (18).

3. Fastening arrangement (10) according to any one of the preceding claims, characterized in that end profiles (18), in particular profiles having a plug-in section (18.1) and in an end section (18.2), are provided on the inside of the facade element (2) in the metal frame (1) in a positively fitting manner.

4. Fastening arrangement (10) according to any of the preceding claims, characterized in that at least on the supporting section (13) of the metal frame (1), a plurality of screw channels (17) of identical internal shape are provided at respectively identical positions and with the same orientation per metal frame (1) for the modular attachment of profiles, modules or fixings.

5. Fastening arrangement (10) according to any one of the preceding claims, characterized in that end profiles (18) provided with a U-shaped cross section are provided for receiving lighting means (18.3) and for positively fitting insertion into the metal frame (1).

6. Fastening arrangement (10) according to any of the preceding claims, characterized in that T-profiles (21) which can be inserted between seals (9) are provided on an inner side of the fastening arrangement (10) as end elements on the room side for closing joints between mutually adjoining facade elements (2).

7. Fastening arrangement (10) according to claim 6, characterized in that the T-profiles (21) comprise a conical barb for fixing.

8. Fastening arrangement (10) according to claim 6 or 7, characterized in that the T-profiles (21) have a fastening means, in particular a positively fitting fastening means, for a floating assembly of cover strips (19) or functional strips on the inside of the facade elements (2), preferably provided between two adjacent metal frames (1).

9. Fastening arrangement (10) according to any of the preceding claims, characterized in that both beam modules (4) made of non-metallic solid material and metallic or non-metallic cover profiles (16) made of non-solid material with a positive fit at at least two fastening points (7, 8) are provided on a metal frame (1) in combination.

10. Fastening arrangement (10) according to any one of the preceding claims, characterized in that on the side of the supporting section (13) facing away from the beam module (4) or cover profile (16), a substantially U-shaped receptacle for fastening means across components, in particular for transport or connection profiles (23, 24), is provided.

11. Fastening arrangement (10) according to any one of the preceding claims, characterized in that both a positively fitting part, in particular a dovetail web, and a screw channel (17) are provided integrated in at least one fastening point (7) for beam modules (4) or cover profiles (16).

12. Fastening arrangement (10) according to any one of the preceding claims, wherein the beam module (4) is provided in non-metallic material and extends continuously over the entire length of the respective metal frame (1).

13. Fastening arrangement (10) according to claim 12, characterized in that the supporting section (13) has, in cross section, an L-shape corresponding to a shape and width of the beam module (4) for shape-fitting receiving on the metal frame (1).

14. Fastening arrangement (10) according to claim 12 or 13, characterized in that the beam module (4) is provided with shape-fitting recesses or grooves corresponding to the shape of retaining webs or fixing projections of the fastening points (7, 8) on the metal frame (1) for pushing or attaching the beam module (4).

15. Fastening arrangement (10) according to any one of the preceding claims, characterized in that the beam module (4) substantially has an L-shape with an L-leg covering the metal frame (1) on the inside of the facade.

16. Fastening arrangement (10) according to any one of the preceding claims, characterized in that the beam module (4) is a wooden beam or a beam made of a wood-based material, in particular a wood composite material.

17. Fastening arrangement (10) according to any one of the preceding claims, characterized in that the beam module (4) is arranged at a distance from a weather-side seal (6) in the direction of the outside of the facade.

18. Fastening arrangement (10) according to any one of the preceding claims, characterized in that the beam module (4) is arranged at a distance from the facade element (2) by a section in the form of a hollow chamber (14) of the metal frame (1).

19. Fastening arrangement (10) according to any one of claims 12 to 17, characterized in that the beam module (4) is arranged directly adjacent to the facade element (2) or to a seal of the facade element (2).

20. Fastening arrangement (10) according to any one of the preceding claims, characterized in that at least one of the fastening points (8) used for positive fitting is realized in the form of a tongue-and-groove connection.

21. Fastening arrangement (10) according to any one of the preceding claims, characterized in that the facade element (2) comprises multiple glass insulating glazing with at least two, preferably three, glass panes (3).

22. Fastening arrangement (10) according to any one of the preceding claims, characterized in that the holding element (5) is made of a plastic or a plastic composite material and is releasably fastened to the metal frame (1) via screws (11) that can be sunk into the interior of the holding element (5).

23. Fastening arrangement (10) according to any one of the preceding claims, characterized in that seals (9) which seal off the inside of the arrangement are provided on the beam module (4) or on the supporting section (13).

24. Fastening arrangement (10) according to any one of the preceding claims, characterized in that holding clamps (15) made of metal are provided between the metal frame (1) and the facade element (2), which holding clamps have a first leg (15.1) for engaging over the facade element (2) on its front side or outside and a second leg (15.2) for engaging with or bearing against the facade holding section (12) of the metal frame (1).