EP2918746A2 - Curtain wall mounting system - Google Patents

Abstract

The invention relates to a facade fastening system for the arrangement of facade cladding on buildings. The fastening device according to the invention is characterized in that the holding elements (4) are L-shaped at right angles with a circumferential support belt (6) such that in the interior of the circulating support belt (6) next to one / more web plate / s (7), several this web plate (s) (7) and / or individual regions of the circumferential support belt (6) are interconnected stiffening ribs (8) are arranged, wherein the L-shaped retaining elements (4) a Wandanlageschenkel (9) with a Wandanlagebereich (10) of the support belt ( 6), and a profile attachment leg (11), and at the free end of the profile attachment leg (11) a partially surrounded by the support belt (6) bearing guide (14) is arranged, wherein in the bearing guide (14) one or more with the carrier profile (5 ) associated guide elements (17) as a "floating bearing", or one or more with the carrier profile (5) connected position securing elements (18) are arranged as a "fixed bearing".

Description

The invention relates to a facade fastening system for the arrangement of facade cladding on buildings.

Facade fastening systems are described in the prior art. For example, in the DE 25 43 174 A1 and the DE 25 43 949 A1 arranged on a building facade substructure disclosed in which metallic spacer angle systems are used, wherein metallic wall panels or wall angles are connected to metallic Fassadenhaltewinkein, which together form the respective facade substructure.

A major disadvantage of these designs is the large number of "lost" items and the very high assembly costs to arrange the individual attachment points on each component and align with respect to the adjacent attachment points.

Furthermore, these vg. Metallic designs with the use of arranged between the building and the facade thermal insulation the disadvantage that the of the vg. Façade substructures formed attachment points cold / thermal bridges form / effect.

Other facade substructures, such as those after the DE 79 25 771 U1 , of the DE 203 01 096 U1 and the DE 85 01 840 U1 , have optimized the solutions mentioned above by reducing the number of components that can be lost and the amount of work required for on-site assembly.

This led to the vg. Solutions, however, also that the carrying capacity of the attachment points as well as the entire substructure were significantly reduced, so that only relatively "lightweight facade elements" can be mounted by means of these designs.

To increase the load capacity of the substructure was in the AT 008 464 U1 proposed to arrange the mounting bracket to be arranged on the facades, the wall angle, such that at least one of the two legs of this wall angle is double-walled over at least part of its length.

In the WO 2005/021 889 A1 was then, also to increase the carrying capacity of the substructure, proposed to form the to be arranged on the wall angle mounting rails as hollow profiles with a triangular or an angled cross-section.

Both of the aforementioned solutions require a high production and assembly costs.

All of the above-mentioned embodiments, in particular in conjunction with the arrangement of thermal insulation between the building and the facade, have in common that cold / thermal bridges are also created by all the last-mentioned fastening points for facade substructures.

Fastening elements or facade substructures with a relation to the latter types significantly higher load capacity are in the DE 38 31 517 C2 and the DE 39 21 922 C2 described above.

However, these designs are in turn characterized by the large number of "loseable" parts, also require a much higher production and assembly costs and also have a significantly higher transport weight.

When arranged between the building and the facade thermal insulation and these higher load-bearing facade substructure have the disadvantage that formed by them Attachment points between the facade and the building are created / conditioned by cold / thermal bridges.

In the EP 0 826 850 B1 is described as a facade substructure, a lever system, which on the one hand also requires a very high production costs and in addition the occurrence of cold / thermal bridges can not be avoided again.

Furthermore, from the EP 2 647 779 A1 a facade substructure with brackets, which are folded from sheet metal and provided with large recesses ("thermo holes") known.

This design is to hold higher loads from the facade cladding with low weight of the bracket and at the same time avoid the formation of cold / thermal bridges between the facade and the building through the arranged in the brackets "thermal holes".

The Indian EP 2 647 779 A1 presented bracket with both in Zug- as well as in the print area double / folded material webs and between these webs, ie arranged in the connecting web "thermo holes", has the disadvantage that the "thermal holes" the desired effect of reducing the heat flow through the bracket only inadequate do justice, because the doubled webs, for a in the EP 2 647 779 A1 described attachment of glass and natural stone slabs must have such a material thickness that cold / thermal bridges along the webs can not be avoided, the "thermal holes", especially at bending loads perpendicular to the bending axis with a minimum modulus, ie lateral thrust on the facade cladding, the carrying capacity of the bracket very much affect.

In a variety of similar systems is also trying by a, between the building and the bracket arranged plastic pad usually about 5 mm to 8 mm thick to reduce the existing cold / thermal bridge.

However, as field tests have shown, it is possible to reduce the cold / thermal bridges by means of these generally used documents Plastic only to a very small extent, since pressure-resistant solid plastic material of this thickness does not provide effective protection against the penetration of cold.

However, foamed, "heat-insulating" plastics which have a higher thermal insulation value do not have the required compressive strengths in order to stably position the mounting bracket mounted thereon on the facades.

In other solutions, such as in the EP 0 032 408 B1 , of the EP 1 599 647 B1 and the EP 2 180 115 B1 vorbeschriebenen, to avoid cold / thermal bridges arranged between the building and the facade components / bracket multi-part, ie formed of different materials, so that between two, arranged on the building and on the facade, for example, metallic components, a third component from a material with poor thermal conductivity, such as wood or plastic, is arranged.

Another representative of these designs, for example, in the FR 2 994 579 A1 described above. Characteristic of this in the FR 2 994 579 A1 above-described solution is that initially elongate metal rails must be arranged on the facade, which are covered by means of a plastic profile spacer webs, wherein subsequently at the free edge of these spacer bars a clamping profile is arranged, are attached to the final assembly state, for example, cladding panels.

These provided with heat-insulating spacers facade mounts have in common that despite very high production costs only relatively small loads can be transmitted, with a significant reduction of train, due to the connection of several components, especially under dynamic load, such as wind loads, especially on building corners Bending, compression and torsional stiffness of these multi-part fasteners resulting, resulting as a result reducing the carrying capacity can lead to the occurrence of a "permanent break".

These latter, the cold / heat bridges between the building and the facade reducing solutions are characterized in that despite increased manufacturing and assembly costs none of these systems under dynamic stress, especially at "wind-exposed" places, such as building corners, reliable high load capacity can guarantee. In addition, in the art as facade substructures, for spaced attachment of aluminum support profiles to building facades, special plastic angle in the form of short T-profile elements, with two arranged in Profilfuß Wandbefestigungsbohrungen, and perpendicular to these, along the free web end, i. parallel to the profile foot, arranged mounting holes or fastening holes for connecting elements, which serve to attach the aluminum support profiles to the plastic angles known.

Characteristic of this design are the both sides of the T-profile web immediately adjacent to the wall mounting holes between the profile base and the profile web arranged triangular, the bending stiffness of the profile web increasing plate-shaped stiffening ribs.

A representative of this design is from the DE 20 2007 009 780 U1 known and describes a wall angle, for fixing a substructure, which serves the arrangement of facade elements, wherein between the building wall and the facade elements a ventilated heat insulation is arranged.

This in the DE 20 2007 009 780 U1 above-described, T-shaped fastening brackets provided with stiffening ribs whose profile is fixed between the stiffening ribs on both sides of the profile web with a plurality of mounting screws on the building wall, and at the free end of the profile web then the substructure is attached, consists of a glass fiber reinforced plastic injection-moldable.

However, these easy to produce plastic angle, but require a very high installation costs on site, since on the one hand each plastic angle at least two mounting holes must be introduced into the building facade. On the other hand, for reasons of stability resulting from the "simple" design of the angles, it is often necessary to arrange several such plastic angles directly directly below one another.

In addition, however, since each of the plastic angle even more fasteners for fixing the support profiles must be arranged for accurate installation of this wall bracket to ensure a reliable and stress-free attachment of the substructure on site, with this, consisting of many individual components facade fastening system a very connected high installation costs.

The invention is therefore based on the object to develop a facade fastening system for the arrangement of facade cladding to buildings, which eliminates the aforementioned disadvantages of the prior art, between the building and the facade, the transmission of high tensile, bending, compressive and torsional stresses and allows To meet the requirements of a high static and dynamic stability, requires only a few components, on site safe, reliable, fast, easy and with minimal time and effort to assemble with high security against loss, and also at the same time still production technology simple and very can be produced inexpensively and also completely avoids the occurrence of cold / thermal bridges between the building and the facade cladding.

According to the invention, this object is achieved by a facade fastening system for the arrangement of facade cladding 1 on facades of building 2 with a facade substructure 3, consisting of attached to the structure 2 holding elements 4 and with the holding elements 4 in the form of Losoder Fixed bearings connected carrier profiles 5, solved according to the features of the main claim of the invention.

Advantageous embodiments, details and features of the invention will become apparent from the dependent claims and the following description of the two embodiments of the invention in conjunction with nine representations of the solution according to the invention.

The invention will now be explained in more detail in conjunction with nine figures.

Figur 1 :

den Teilschnitt einer an einem Baukörper 2 angeordneten Fassadenverkleidungen 1 mit einer Fassadenunterkonstruktion 3 und den am Baukörper 2 befestigten erfindungsgemäßen Halteelementen 4,

Figur 2 :

eine Bauform des erfindungsgemäßen Halteelementes 4 in einer räumlichen Darstellung,

Figur 3 :

das in der Figur 2 dargestellte Halteelemente 4 in der Bauform "Loslager" im Montagezustand an einem Baukörper 2 als Explosionsdarstellung,

Figur 4 :

das in der Figur 3 dargestellte Halteelemente 4 in der Bauform "Loslager" im Endmontagezustand an einem Baukörper 2 in einer räumlichen Darstellung,

Figur 5 :

das in der Figur 2 dargestellte Halteelemente 4 in der Bauform "Festlager" im Montagezustand an einem Baukörper 2 als Explosionsdarstellung,

Figur 6 :

das in der Figur 5 dargestellte Halteelemente 4 in der Bauform "Festlager" im Endmontagezustand an einem Baukörper 2 in einer räumlichen Darstellung,

Figur 7 :

eine weitere Bauform des erfindungsgemäßen Halteelementes 4 in einer räumlichen Darstellung,

Figur 8 :

das in der Figur 7 dargestellte Halteelemente 4 in der Bauform "Loslager" im Montagezustand an einem Baukörper 2 als Explosionsdarstellung,

Figur 9 :

das in der Figur 7 dargestellte Halteelemente 4 in der Bauform "Loslager" im Endmontagezustand an einem Baukörper 2 in einer räumlichen Darstellung.

It shows:

FIG. 1:

2 shows the partial section of a facade cladding 1 arranged on a building 2 with a facade substructure 3 and the retaining elements 4 according to the invention attached to the building 2;

FIG. 2:

a design of the holding element 4 according to the invention in a spatial representation,

FIG. 3:

that in the FIG. 2 illustrated holding elements 4 in the design "floating bearing" in the assembled state of a building 2 as an exploded view,

FIG. 4:

that in the FIG. 3 illustrated holding elements 4 in the design "floating bearing" in the final assembly state on a building 2 in a spatial representation,

FIG. 5:

that in the FIG. 2 illustrated holding elements 4 in the form of "fixed bearing" in the assembled state of a building 2 as an exploded view,

FIG. 6:

that in the FIG. 5 illustrated holding elements 4 in the form of "fixed bearing" in the final assembly state of a building 2 in a spatial representation,

FIG. 7:

a further design of the holding element 4 according to the invention in a spatial representation,

FIG. 8:

that in the FIG. 7 illustrated holding elements 4 in the design "floating bearing" in the assembled state of a building 2 as an exploded view,

FIG. 9:

that in the FIG. 7 illustrated holding elements 4 in the design "movable bearing" in the final assembly state of a building 2 in a three-dimensional representation.

The FIG. 1 1 shows a partial section of a facade cladding 1 arranged on a structure 2 with the retaining elements 4 of a facade substructure 3 fastened to the building structure 2. In addition to the retaining elements 4 rigidly fastened to the building structure 2, this cladding substructure 3 also comprises the retaining elements 4 in the form of loose walls. or fixed storage according to the invention associated carrier profiles. 5

At these support profiles 5, the facade cladding 1 are arranged.

The FIG. 2 now shows one of the designs of the invention in a spatial representation.

These holding elements 4 are formed according to the invention L-shaped at right angles and have a circumferential support belt. 6

This invention circulating support belt 6 serves not only the recording of tensile and compressive stresses, but at the same time also wall system, and also serves as in FIG. 3 and FIG. 4 represented, the Recording and fixing of the retaining element 4 on the building 2 by means of a fastening element 13.

Characteristic in this context is that in the interior of the circumferential support belt 6 next to one / more web plate / n 7, a plurality of this web plate / s 7 and / or individual areas of the circumferential support belt 6 interconnecting stiffening ribs 8 are arranged, whereby the individual areas of Traggurtes 6 are mutually stabilized in their position against elastic deformations that the holding element 4 of the invention with high resistance moments high static and dynamic loads, high tensile, compressive, bending and torsional stiffness can be transmitted, and thereby over the prior art usual number of holding elements along a carrier profile 5 now much less holding elements 4 are to be mounted according to the design of the invention.

In their geometric basic form, the L-shaped retaining elements 4 according to the invention have a wall attachment leg 9 with a wall contact region 10 of the support belt 6, and a profile attachment leg 11 with a bearing guide 14.

The wall contact area 10 of the wall attachment leg 9 is a region of the support belt 4 encircling support belt 6 and this is supported in the final assembly state (see the related FIGS. 4 . 6 , and 9 ) directly on the building 2 from.

It is also essential that in the wall contact area 10, spaced from the free end of Wandanlageschekels 9, perpendicular to the surface of the support belt 6, the two on Wandanlageschenkel 9 spaced apart from each other arranged (ie, the Wandanlageschenkel 9 opposite each other) portions of the support belt 6 penetrating through hole 12th is arranged.

This through hole 12 is according to the invention arranged on the support member 4, that the support member 4 during installation independently "centered", whereby by means of a single in this through hole 12th arranged attachment point, such as, inter alia, in the FIG. 3 represented, for example, by means of a single arranged on the building 2 in the form of a threaded rod (or with only a single screw to be arranged on the building 2 (not shown)), the holding element 4 according to the invention by means of only a single fastener 13, (compared to the in the state of Technology usual, with multiple fasteners on the building to be mounted holding elements) can be easily mounted quickly and reliably on the building 2, wherein the support member 4 according to the invention also automatically aligns itself optimally due to the location of its center of gravity from the dead load during assembly.

It is also characteristic that at the free end of the in FIGS. 2 to 9 Profilbefestigungsschenkels 11 shown a partially enclosed by the support belt 6 bearing guide 14 is arranged.

In the area of the bearing guide 14, the bearing guide 14 enclosing the bearing guide 6 ensures secure load transmission of the static and dynamic loads transmitted to the retaining element in the bearing guide 14, ie. Forces and moments.

It is also essential that at the free end of the profile fastening leg 11, ie directly in the area of the bearing guide 14, either, as in the FIGS. 2 to 6 shown, a profile guide slot 15 or, as in the FIGS. 7 to 9 shown, a profile guide web 16 is arranged for receiving and guiding the carrier profiles 5.

This profile guide slot 15, or the profile guide bar 16 ensures with the bearing guide 14 enclosing strap 6, in addition to optimal guidance of the carrier profiles 5 in the region of the webs of the carrier profiles 5, at the same time a secure load transfer in the bearing guide 14 of the side cheeks of the webs the retaining element 4 transmitted static and dynamic loads.

According to the invention is thereby ensured with minimal technical effort that both the on the side cheeks of the webs of the T-profiles, as well as on the side cheeks of the webs of the U-profiles registered loads centrally / centrally to the through hole 12 on the holding element 4 according to the invention attack, so that always an optimal load entry is ensured in the retaining element 4.

As a result of the construction according to the invention can be easily and reliably with only one fastener 13 to be mounted on the building 2 holding element 4 according to the invention introduced safely and reliably transferred from the carrier profiles 5 bearing loads in the building 2, wherein the retaining element 4 according to the invention to be transmitted "facade loads" , with increasing load and increasingly the retaining element 4 itself, due to a result of the inventive design self-centering effect, reliably position the building.

It is also essential to the invention that in the bearing guide 14, as in the Figures 3 . 4 and the FIGS. 8 and 9 shown, one or more connected to the carrier profile 5 guide elements 17 can be arranged as a "floating bearing". With few components is ensured by this arrangement according to the invention, quickly, easily and reliably that in the facade substructure 3, for example, from thermal expansion and / or wind load resulting deformations are compensated almost "stress-free" along the entire facade, causing the thermal expansion and / or Wind load resulting damage can be reliably avoided. In addition, as well as resulting assembly tolerances can be compensated when attaching the facade cladding to the building. Is essential to the invention that, as in the Figures 5 and 6 shown, one or more associated with the carrier profile 5 position assurance element / e 18 are arranged in the bearing guide 14 as a "fixed bearing".

The arrangement of so-called "fixed bearings" is required in any statically determined system.

With the arrangement according to the invention, the realization of this technically necessary measures ("fixed bearing") succeeds as well as in the "Moving away", assembly technology with very few, unified components, very simple, fast and reliable.

It is also characteristic that the connection of the guide elements 17, as well as the connection of the position securing elements 18 with the carrier profile 5, via the pin bores 22 arranged in alignment with one another in the guide elements 17 or the position securing elements 18 and the carrier profile 5, i. each carried out by means of a single locking pin 23, with little effort and with very few components on site quickly, easily and reliably.

It is also essential to the invention that in the area of the through-bore 12, a guide sleeve 19, which connects the two web plates 7, which are spaced apart by the through-bore 12, in the bore longitudinal direction, is arranged. This arranged in the through hole 12 guide sleeve 19 serves on the one hand a better guidance of the fastening element 13 in the region of the through hole 12, but at the same time serves to increase the pressure stability of the Wandanlageschenkel 9 in the attachment point, i. in the region of the through hole 12.

It is also essential that on both sides of the through hole 12, between the adjacent regions of the support belt 6 on the wall attachment leg 9 and the profile attachment leg 11 Zugrippen 20 are arranged. These in the FIGS. 2 to 9 shown Zugrippen 20 serve to further increase the bending stiffness of the retaining element 4 with minimal use of material.

According to the invention, furthermore, a bearing guide web 21 is arranged in the region of the bearing guide 14 between the regions of the support belt 6 spaced therefrom around the bearing guide 14, which reliably position the guide elements 17 and / or position securing elements 18 in the bearing guides 14 even under very extreme stresses ensures the holding elements 4 and at the same time stabilizes the bearing guide 14 itself.

It is also essential that the holding elements 4 are themselves produced as injection-molded parts made of plastic. Due to the design of the retaining elements 4 according to the invention a very cost-effective production is ensured both in small and in very large numbers.

It is also characteristic that the holding elements 4 can be made of a fiber-reinforced plastic. As a result, an even higher stability of the holding elements 4 is achieved, which enables the use of the holding elements 4 according to the invention under even higher loads.

Both in the embodiment of the holding elements 4 made of plastic material, as well as in the embodiment of the holding elements 4 made of a fiber-reinforced plastic is always another very significant advantage of this holding elements 4 according to the invention, their very low thermal conductivity fully to fruition. These consisting of a plastic or a fiber-reinforced plastic holding elements 4 are due to the use of finding material, very poor heat conductors and prevent the occurrence of cold / thermal bridges between the cladding 1 with the carrier profiles 5 and the building 2.

It is advantageous if between the building 2 and the support profiles 5 of the cladding 1 insulation 24 is disposed, whereby another, very significant advantage of this preferably made of a plastic or a fiber-reinforced plastic holding elements 4, the poor thermal conductivity comes into play.

As already explained, the retaining elements 4 due to the use of finding plastic material, very poor heat conductors and prevent the occurrence of cold / thermal bridges between the facade cladding 1 with the support sections 5 and the structure 2. In addition, the invention causes the "bridge construction" of the holding elements 4 in connection with the directly adjacent to the holding elements 4 insulating material that form in the holding element 4 "thermal chambers", ie chambers with dormant "air", the one Heat transfer from the facade cladding 1 with the carrier profiles 5 in the building 2 additionally hamper.

In conjunction with the illustrations according to the FIGS. 8 and 9 should be added at this point, that of course in the FIG. 8 Guide element 17 shown ("floating bearing") in these in the FIGS. 7 . 8th and 9 illustrated designs of the retaining element 4, analogous to the representations of Figures 5 and 6 , by a position securing element 18 ("fixed bearing") can be replaced, so that with this in the FIG. 7 illustrated design of the holding element 4 by the replacement of the guide element 17 by a position assurance element 18 is a "fixed bearing" is formed.

When using a position securing element 18 instead of the guide element 17 would be the FIG. 9 then the spatial representation of a "fixed camp".

With the solution according to the invention, it has been possible to develop a facade fastening system for the arrangement of facade cladding on buildings, which eliminates the disadvantages of the prior art, allows the transmission of high tensile, bending, compressive and torsional stresses between the building and the facade, and so meets the requirements of a high static and dynamic stability, it requires only a few components, on site safe, reliable, fast, easy and with minimal expenditure of time to assemble with high security against loss, while manufacturing technology can be easily and very inexpensively manufactured and Moreover, in the embodiments as a plastic part or fiber-reinforced plastic part, the occurrence of cold / thermal bridges between the structure 2 and the cladding 1 completely avoids.

REFERENCE SYMBOL

1

cladding

2

structure

3

Facade substructure

4

retaining element

5

carrier profile

6

Carrying strap

7

web plate

8th

stiffening rib

9

Wall bearing limb

10

Wall investment field

11

Profile attachment leg

12

Through Hole

13

fastener

14

warehouse management

15

Profile guide slot

16

Profile guide web

17

guide element

18

Position securing element

19

guide sleeve

20

pull rib

21

Bearing guide web

22

pin hole

23

safety pin

24

insulation

Claims (8)

Façade fastening system for the arrangement of facade cladding (1) on facades of building structures (2) with a facade substructure (3) comprising retaining elements (4) fastened to the building structure (2) and support profiles connected to the retaining elements (4) in the form of loose or fixed bearings ( 5), characterized in on the support profiles (5) facade cladding (1) characterized - That the holding elements (4) are L-shaped at right angles, with a circumferential support belt (6) are formed such that in the interior of the circumferential support belt (6) in addition to one / more web plate / s (7), a plurality of these web plate / n (7 ) and / or individual areas of the circumferential support belt (6) interconnecting stiffening ribs (8) are arranged, wherein the L-shaped holding elements (4) a Wandanlageschenkel (9) with a wall contact area (10) of the support belt (6), and a profile attachment leg (11), and - that from the free end of the Wandanlageschenkels (9) spaced, in the wall contact area (10) perpendicular to the surface of the support belt (6), a through hole (12) is arranged, the two, in the region of Wandanlageschenkels (9) opposite to each other Carrying strap (6) penetrates, and a with the building body (2) in operative connection passing fastener (13) can accommodate, and - That at the free end of the profile attachment leg (11) a partially surrounded by the support belt (6) bearing guide (14) is arranged, and - That at the free end of the profile attachment leg (11), in the region of the bearing guide (14), either a profile guide slot (15) or a profile guide web (16) for receiving and guiding the carrier profiles (5) is arranged, and - That in the bearing guide (14) one or more with the carrier profile (5) connected guide elements (17) as a "movable bearing", or one or more with the carrier profile (5) connected position securing elements (18) are arranged as a "fixed bearing". Façade fastening system according to claim 1, characterized in that the connection of the guide elements (17) or the position assurance elements (18) with the carrier profile (5) arranged in the guide elements (17), or the position assurance elements (18) and the carrier profile (5) , mutually aligned pin bores (22) by means of a locking pin (23). Façade fastening system, according to claim 1 and / or claim 2, characterized in that in the region of the through hole (12) a the two web plates (7) in the bore longitudinal direction interconnecting guide sleeve (19) is arranged. Façade fastening system, according to one or more of claims 1 to 3, characterized in that on both sides of the through hole (12), between the adjacent areas of the support belt (6) on Wandanlageschenkel (9) and the profile attachment leg (11) Zugrippen (20) are arranged. Façade fastening system according to one or more of claims 1 to 4, characterized in that in the region of the bearing guide (14) between the regions of the support belt (6) spaced there from a bearing guide web (21) is arranged. Façade fastening system according to one or more of claims 1 to 5, characterized in that the holding elements (4) are produced as injection-molded parts made of plastic. Façade fastening system according to one or more of claims 1 to 6, characterized in that the holding elements (4) are made of a fiber-reinforced plastic. Façade fastening system according to one or more of claims 1 to 7, characterized in that between the building (2) and the carrier profiles (5) of the facade cladding (1) insulating material (24) is arranged.

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