EP0746658A1

EP0746658A1 - Insulating arrangement for facades

Info

Publication number: EP0746658A1
Application number: EP95911283A
Authority: EP
Inventors: Donat Woschko; Manfred Woschko
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-04
Filing date: 1995-03-02
Publication date: 1996-12-11
Anticipated expiration: 2015-03-02
Also published as: ATE160838T1; WO1995023900A1; DE59501074D1; EP0746658B1; DE4407284A1

Abstract

The invention relates to insulating arrangements for facades which, whilst being easy to produce and assemble, have a reliable insulating effect with respect to environmental influences such as weather and sound. According to an embodiment, an internal insulating arrangement (3) comprises a flat seal (5) which can be connected to the support structure and into which conventional insulating frames (6, 7) can be inserted. Joints between elements (20, 21) of the flat seal (5) can be sealed by stuck-on insulating patches (18) over which the insulating frames (6, 7) can be guided. An external insulating arrangement (24), which can have the same construction, is provided with non-return valves (29) for the removal of air and water and also for the prevention of penetration by environmental influences. The ends of a screw connection (25) which are exposed to environmental influences and the ends of the screw connection (25) which are introduced into the support structure are separated by means of a heat-insulating layer (38) between adjoining elements (36, 37) of the screw connection (25), the elements (36, 37) being interconnected such that they are rigid against rotation and undetachable in the axial direction.

Description

Sealing arrangement for facades

The invention relates to a sealing arrangement for facades with a building-side support structure made of vertically extending post elements and horizontally extending transom elements and with flat panels which are attached to the facing away from the building front of the post and transom elements via respective sealing frames.

Building facades are increasingly being constructed as metal-glass structures. As a basic construction, these metal-glass facades have a metal frame, in which individual flat facade elements, such as glass windows and the areas between them, glass, but also metal, natural stone, artificial stone and plastic elements are used. In the following, these facade elements are collectively referred to as panels. This is also because comparable constructions can also be achieved using wooden scaffolding and wooden panels. Furthermore, solar collectors can also be used in such supporting structures.

The supporting structures consist in the usual way of vertically extending post elements and horizontally extending locking elements which form the cross bracing of the post elements with one another. According to the prior art, not only wooden supporting structures are known, but also those made of steel and aluminum. Hollow sections have also been used.

When attaching the panels to the supporting structure, it is essential to ensure that environmental influences are prevented from penetrating the connection between the supporting structure and the panels. For this purpose, it is customary to provide sealing frames which are applied to the front of the building, facing away from the post and transom elements, and on which the panels are then placed and connected to the supporting structure under pressure against the sealing frame. The sealing frames are made from commercially available sealing elements by first cutting them to length and gluing them together. This is usually done at the factory and not on a construction site, since it can be assumed that a large number of sealing frames are required for a building. The sealing frames must be attached to the supporting structure. The insertion into grooves in the supporting structure is conventional, but the production of supporting structures with grooves requires considerable effort. Retrofitting of grooves is, for example, for steel support structures or not possible from hollow profiles. With supporting structures made of aluminum and wood, this is associated with considerable effort. In addition, even with careful manufacture of the sealing frame, it cannot be ensured that water pressed on by wind forces cannot nevertheless pass through.

The building facade is also subject to numerous other environmental influences, in particular wind forces, temperature, but also environmental noise. Furthermore, if possible, ventilation of the facade should be made possible, which on the one hand protects the building itself and on the other hand prevents weather-dependent disadvantages in the cavity between the panels and the building. This is all the more so since the temperature conduction is of considerable importance for metal support structures. Wind forces are able to push water through even very small openings, which is definitely disadvantageous. After all, sound transmissions from outside the building or from the facade are extremely disruptive during construction work into the interior of the building and, if possible, to be prevented. It should be noted that the

Rule structure made of metal when excited, for example by vibrations of the panels, has good transmission properties for sound waves, i.e. only low structure-borne sound absorption.

Based on this, it is an object of the present invention

Specify sealing arrangement for facades, which can improve the sealing effect against at least one of the environmental influences mentioned. In particular, a structurally simple and inexpensive arrangement should be created.

Starting from the usual sealing arrangement mentioned at the outset, the invention provides various separate, but also jointly usable solutions, specifically in claims 1, 9, 17 and 21.

The invention is further developed by the features of the subclaims. As already mentioned, it is expedient and advantageous to realize all the options contained in the claims mentioned together. However, depending on the application, it may be sufficient to provide only one of the respective sealing arrangements or embodiments of sealing arrangements.

It is essential in the case of the sealing arrangements according to the application that the individual components of the sealing arrangement are simple to manufacture, largely in a factory design and that the assembly on site is carried out in a simple manner can, without unreasonable effort when editing the

Supporting structure. At the points crucial for the sealing effect, the attention of the fitter is not impaired during assembly, so that a uniform sealing effect can be achieved.

The invention is explained in more detail using the exemplary embodiments shown in the drawing. Show it:

1 is a top view of a section of a facade with the panel removed and part of the sealing arrangement, FIG. 2 shows an enlarged part of the sealing arrangement in the crossing area of the supporting structure,

3 in supervision the connection between intersection and longitudinal sections of the sealing arrangement,

4 shows a cross section in this area, FIG. 5 shows a longitudinal section in this area,

6 shows the basic structure of the sealing arrangement in cross section,

7 in section a section of a facade arrangement with sealing arrangements according to the invention,

8 shows a one-way valve for use in the invention, FIG. 9 shows the one-way valve according to FIG. 8 in a view from below,

10 is a fastener for use in the invention with cold bridge interruption,

11 shows the fastening element according to FIG. 10 in a side view.

Structures of building construction in full skeleton construction are well known. Buildings where a facade is hung are also common. Both types of structures have in common that a building-side support structure is provided, which is composed of vertically extending post elements and horizontally extending transom elements, facade elements being fastened to the support structure. In general, there are flat elements, such as insulating glazing for windows, solar collectors, glass panes, plates made of natural or artificial stone, plastic or wood. Such elements can be called panels. As is known, these panels are fixed to the supporting structure, but if possible they can be detachably attached.

The supporting structure and panel are only shown to the extent necessary to explain the invention. For example, Fig. 7 shows a horizontal extending locking element 1 in section and two insulating glazings as panels 2. FIG. 10 also shows a supporting structure element, which, as shown, can either be a locking element 1 but also an unillustrated post element.

Overall, a grid-like arrangement is formed. An arrangement is provided in which the individual panels, such as the insulating glazing 2, are to be firmly but releasably connected to the elements of the supporting structure such as the locking element 1 in a manner known per se. In the facades on which this is based, this takes place in that a sealing arrangement 3 is provided between the edge of the insulating glazing 2 (as an example of a panel) and an edge-side support area of the locking element 1 as part of the supporting structure and both elements 1 and 2 are shown below as an example Means are pressed against each other.

The grid-like arrangement can be seen from FIG. 1.

According to the invention, a flat gasket 5 is initially applied over the entire surface of the front faces 4 of the various elements of the supporting structure that point away from the building, in the edge areas of which conventional sealing frames 6 and 7 are used for adjacent panels. For this purpose, the flat seal 5 has, on the edge side, approximately dovetail-shaped grooves 8 in cross-section, wherein lips 9 can be provided in the bottom portion thereof. The sealing frames 6, 7 are approximately T-shaped in section, the longitudinal legs 10 are essentially adapted to the cross section of the grooves 8 and the transverse legs outwardly facing lips 12 and extending through the entire sealing frame

Have cavities 13. Lips 14 are likewise provided on at least one of the inwardly facing surfaces of the transverse leg 11, specifically on the side lying on the outside of the frame as a whole. During assembly, the flat seals 5 are first firmly attached to the front sides 4. A type of attachment is described in more detail below. The attachment can also be done by gluing. The sealing frames 6 and 7 are then pressed into the grooves 8 of the flat seal 5 by inserting their longitudinal legs 10. Due to the inherent elasticity of the various sealing elements, in particular also the section 15 adjacent to the edge next to the grooves 8, the insertion of the sealing frames 6, 7 is possible without great difficulty. The sealing frames 6, 7 themselves are usually already made from extruded material at the factory or in the factory, the corresponding joints being welded, glued or vulcanized to one another. The flat gasket 5 can contain inserts made of heat-insulating and / or sound-absorbing and / or reinforcing material, glass fibers or carbon fibers being suitable for the latter, for example. A cork insert 16, which is inserted in the section between the two grooves 8 of the flat gasket 5, is possible, for example, as the heat and sound-insulating material. A completely embedded cork insert 16 is shown. However, the rear side of the flat gasket, as shown schematically in FIG. 7, can also be open, that is to say expose the insert 16 there and lie directly against the associated elements of the supporting structure, the locking element 1 in FIG. 7 . Other materials are also conceivable, for example plastics such as polystyrene and the like, but also mixtures thereof. It is useful, however, that this insert 16 is already inserted in the flat gasket 5 at the factory.

It can be seen that, given the dimensions of a building, flat seals 5 cannot be provided in the factory or in the factory to the extent required. The flat gasket 5 will therefore be available as a semi-finished product in the form of strand material, the individual longitudinal sections being cut to length in the simplest embodiment. At the joints of the individual elements there is a latent danger that the sealing effect will not be achieved, for example due to an imprecise cut and / or imprecise attachment during assembly.

A secure seal in the sealing joint can be achieved in the manner shown in FIGS. 3 to 5.

It is useful first of all that there is not a blunt joint, but rather an interlocking design of the two end faces involved, for example in the manner of the interlocking elements of puzzles or in the manner of a dovetail connection. Such a dividing line 17 is shown in broken lines in FIG. 3, specifically there as a symmetrical, essentially dovetail-shaped representation. A step-like overlap (not shown) or oblique overlap (also not shown) can also be provided. However, an additional securing and sealing in the area of the dividing line 17 is advantageous. This is achieved by a sealing patch 18 completely glued in this area, specifically in the area between the two grooves 8 of the flat seal 5 via the dividing line 17. The sealing patch 18 expediently contains flats 19 which run out all the way around the edge, as they do for example, in the case of repair stains for the repair of holes in bicycle tubes. The flats 19 expediently extend very close to the grooves 8, in any case to the extent that after subsequent insertion of the sealing frames 6, 7, the lips 14 come to rest on these flats 19. This ensures that after the panels have been attached, even with an inaccurate cut or inaccurate arrangement of the various elements of the flat seal 5 in the region of the dividing line 17, the sealing effect is ensured, even if, for example, water is present under high wind pressure.

Since it is generally difficult to provide the dividing line 17 at the construction site, even if a corresponding punch should be present, it is expedient to provide longitudinal elements cut to length at the factory and crossing elements prepared at the factory, each with a compatible course of the joints in the area of the future dividing lines 17. Fig. 1 shows this in supervision. These are longitudinal elements 20, which can be obtained individually according to the respective building and can also have different lengths depending on whether they are to be attached to a locking element 1 or a post element, and crossing elements 21, in which all legs are expediently of the same design. As can be seen from FIG. 2, these crossing elements 21 can, for example, carry central reinforcing elements 22 which simplify their attachment. In cross section they correspond to the longitudinal elements 20 and in particular have the cross section according to FIG. 6.

After laying such a sealing arrangement 3 made of flat gasket 5 and inserted sealing frame 6 or 7, the panels, for example the insulating glazing 2, are placed and pressed in a conventional manner in a fixed or detachable connection against the elements of the supporting structure with the sealing arrangement 3 being interposed. At no point is there a risk of a gap in the sealing arrangement 3, so that the ingress of water can be reliably prevented. Sound and / or thermal insulation can be achieved by means of the insert 16 mentioned.

It is by no means uncommon to use an outer strip arrangement which essentially follows the course of the support structure in such facade constructions and to connect it to the support structure by means of a screw connection in such a way that the strips press the panels against the support structure. This is explained in more detail with reference to FIG. 7. FIG. 7 shows, in the manner already explained, a locking element 1 with a flat gasket 5 and sealing frames 6 and 7 inserted therein. Insulating glazing 2 is placed there as panels. Via a strip 23 formed here in cross-section by a U-profile and an outer sealing arrangement 24 connected to it, which can be identical, for example, in the construction of the inner sealing arrangement 3, but which can also have a one-piece design, is by means of a screw connection 25 is explained in more detail below, between the bar 23 and the locking element 1, first the connection between them is established and then the compressive force for pressing the various elements against one another, in particular compressing the sealing frames 6 and 7 in the inner sealing arrangement 3 and corresponding sealing elements 26 and 27 respectively outer seal assembly 24 reached. With such an arrangement, it is possible to meet tolerances of the overall construction, since the various sealing arrangements have not only elasticity in the direction of the building and away from it, but also in the direction transverse to it, without the sealing effect being lost.

It is advantageous to be able to vent the space 28 between the panels formed by the insulating glazing 2 and the two sealing arrangements 3 and 24 or to be able to free it of any water that has penetrated, but on the other hand to prevent environmental influences, in particular wind pressure, from occurring.

For example and in accordance with a feature of the invention, a one-way valve 29 can be provided in the outer sealing arrangement 24, which valve allows water and / or air to escape from the space 28 to the outside, but prevents the entry of air from the outside. In the simplest case, the corresponding frame-shaped sealing element 27 has a plastic tube 30 on the vertically lower side of the outer sealing arrangement 24, on the outside of which, with regard to the building and the space 28, a tab 31 is partially attached and It is provided, in part loosely, that the closed state is predefined in the normal state, taking advantage of the inherent elasticity, the flap 31 being deflected outwards at a certain pressure from the space 28, for example by heated and expanding air or by water, so that the valve opens , when the wind is blowing, the plastic tube 30 is closed by the tab 31. In the exemplary embodiment, a substantially rectangular tab 31 is provided. However, this can correspond to the cross section of the plastic tube 30 also have a different geometric shape. One-way valves of this type are generally known, for example in bellows or the like.

The screw connection 25 can now be a heat-conducting or, which is more disadvantageous, a cold-conducting bridge. As can be seen from FIG. 7, a bolt head 32 is provided outside the facade in the area of the strip 23. The screw connection 25 penetrates both the strip 23 and the space 28 and the two sealing arrangements 3 and 24 and, as can be seen in particular from FIG. 10, enters the support structure, here the locking element 1. Although a certain sealing effect in the area of the sealing arrangements 3 and 24 can be achieved in that the corresponding opening for the passage of the screw connection 25 is made somewhat smaller than the diameter of the screw connection 25, so that there is an elastic concern, however, the cold conduction is thereby Bridge not broken.

This applies even if, for practical reasons, the screw connection is formed in two parts, namely on the one hand by a first part 33 used for fastening the internal sealing arrangement 3 and screwed into the supporting structure with an end threaded hole 34 and a second external bolt part 35 containing the bolt head 32 that after

Placing the bar 23 passes through it and is screwed into the threaded bore 34 of the first part 33. However, the cold bridge remains.

An interruption of the cold bridge is ensured in the embodiment according to FIGS. 10 and 11. In this embodiment, the first part 33 is the

Screw connection 25 formed in several parts. A first element 36 and a second element 37 have mutually complementary spatial separating surfaces such that, as can be seen in FIGS. 10 and 11, in the assembled state, in which the axes lie on a common axis, which is also the common axis of the screw connection 25, the two elements 36 and 37 cannot be separated from one another in the axial direction, but can be guided apart or into one another in at least one direction perpendicular to the axis. The parting plane can have a dovetail shape as shown in FIG. 10. It is also necessary that a non-rotatable connection is achieved for technical reasons. The actual design and dimensioning of the first part 33 of the screw connection 25 and its two elements 36 and 37 is determined exclusively by static requirements. In the area of these dividing surfaces is advantageous for Interruption of the cold bridge, a corresponding thermal insulation layer 38 is introduced. Preferably, the two elements 36, 37 and the heat insulation layer 38 are firmly connected like an adhesive bond.

The advantage here is that the first part 33 of the screw connection 25 can be completely manufactured in the factory.

With suitable inherent rigidity of the sealing arrangement 3, in particular the flat seal 5, it is not necessary to provide a separate connection arrangement for connecting the flat seal 5 to the locking element 1 or the post element. In practice, at the construction site itself, corresponding threaded holes 39 are provided in the supporting structure. The first part 33 of the screw connection 25 is then screwed into this. Associated holes are then punched in the flat gasket 5, which, as mentioned, should have a smaller diameter than the diameter of the first part 33 of the screw connection 25. It is then sufficient to push the flat gasket 5 by means of these holes over the first parts 33 and to press it against the front side 4 of the locking element 1 or the post element. The sealing patches 18 and then the sealing frames 6 and 7 are then attached in the manner described. The panels, such as the insulating glazing 2, are then attached and, by means of the strips 23 and the associated sealing arrangement 24, are pressed against one another and against the elements of the supporting structure such that the bolt part 35 as the second part of the screw connection 25 into the associated threaded bore 40 of the first part 33 or whose first element 36 is screwed in.

For completeness it should be mentioned that the sealing elements 26 and 27 of the outer sealing arrangement 24 also have cavities such as the cavities 13 of the inner sealing arrangement 3 or the sealing frame 6 and 7, as well as lips to improve the sealing effect. Furthermore, the external sealing arrangement 24 can also have inlays like the internal sealing arrangement 3.

In summary, a sealing arrangement made up of simple elements is specified which can be easily installed and nevertheless achieves a high sealing effect against environmental influences, in particular weather and sound influences.

Claims

claims

1. Sealing arrangement for facades with a building-side support structure made of vertically running

Post elements and horizontally running transom elements (1) and with flat panels (double glazing), which are attached to the front (4) of the mullion and transom elements facing away from the building via respective sealing frames (6, 7), characterized by one on the front (4) flat gasket (5) applied essentially over the entire surface, into which the sealing frames (6, 7) can be inserted.

2. Sealing arrangement according to claim 1, characterized in that the flat gasket (5) is formed from a plurality of abutting elements (20, 21) which can be firmly connected to one another at these end faces, such as by gluing or the like.

3. Sealing arrangement according to claim 2, characterized by a front face in the region of the dividing line (17) between the two elements (20, 21) covering sealing spots (18) which is glued or vulcanized onto both elements (20, 21).

4. Sealing arrangement according to claim 3, characterized in that when the sealing frame (6, 7) is inserted, it covers an adjacent section (flattening 19) of the sealing patch (18).

5. Sealing arrangement according to one of claims 1 to 4, characterized in that the end faces of abutting elements (20, 21) of the flat seal (5) engage in a dovetail shape (dividing line 17).

6. Sealing arrangement according to one of claims 2 to 5, characterized by Intersection elements (21) for the intersection areas of mullion and transom elements and longitudinal elements (20) for the connection between the intersection elements (21).

7. Sealing arrangement according to one of claims 2 to 6, characterized by insertable in the front sides (4), in particular screw-in pin elements (parts 33), wherein the flat gasket (5) has corresponding holes and on this and on the pin elements (part 33) the front (4) can be applied.

8. Sealing arrangement according to one of claims 1 to 7, characterized eken that the attachment of the panels (double glazing) on the front (4) of the supporting structure by the course of the front (4) following strips (23), which with the Fronts (4) can be connected and the panels

Press (double glazing) against the front (4) with the sealing arrangements (3, 24) in between.

9. Sealing arrangement for facades according to the preamble of claim 1 and according to claim 8, but in particular according to one of claims 1 to 8, characterized thereby that on the strips (23) to the front (4) facing sealing arrangement (24) is provided , which also has a sealing frame arrangement (sealing elements 26, 27).

10. Sealing arrangement according to claim 9, characterized in that the attached to the bar (23) sealing arrangement (24) has a structure which corresponds to that of the sealing arrangement (3) between panels (insulating glass 2) and front (4) substantially.

11. Sealing arrangement according to claim 10, characterized in that the sealing frame (26, 27) and the flat seal of the strip-side sealing arrangement (24) are formed in one piece.

12. Sealing arrangement according to claim 9 or 10, characterized in that the end faces of the elements of the sealing arrangement (24) abut each other without sticking.

13. Sealing arrangement according to one of claims 9 to 12, characterized in that horizontal and vertical sections of the sealing frame (27) of the strip-side sealing arrangement (24) have one-way valves (29) which lead to the space (28) between strips () 23) and front

(4) and panels (double glazing) block, but can clear the way out of this room (28) to the outside.

14. Sealing arrangement according to claim 13, characterized in that the one-way valve (29) is formed by a sealing tube (30) in the corresponding sealing frame (sealing element 27) and an externally glued rubber-elastic tab (31) which, in the unloaded state, the passage opening through the Sealing frame closes.

15. Sealing arrangement according to one of claims 8 to 14, characterized in that the strips (23) through these penetrating and with the front (4) connectable via a screw engagement screw connections (25) the panels (double glazing) against the front (4th ) to press.

16. Sealing arrangement according to claim 15 and claim 7, characterized in that a bolt part (35) which passes through the strip (23) engages in a threaded bore (40) of the pin element (part 33) of the screw connection (25).

17. Sealing arrangement according to the preamble of claim 1, but in particular according to one of claims 1 to 16, characterized eken that the attachment to the front (4) via a screw connection (25), in which one part (33) of Screw connection (25) is divided transversely to the axis such that in the assembled state in the axial direction a and a non-positive, non-rotatable connection is achieved which, if necessary, can only be released in at least one direction perpendicular to the axis.

18. Sealing arrangement according to claim 17, characterized in that a heat insulation layer (38) is arranged between the separating surfaces of the two elements (36, 37) of the part (33) of the screw connection (25).

19. Sealing arrangement according to claim 17 or 18, characterized by an approximately dovetail-shaped separating surface between the two elements (36, 37).

20. Sealing arrangement according to claim 18 or 19, characterized eken that the two elements (36, 37) after attaching the thermal barrier layer (18) firmly connected to each other, for. B. are glued.

21. Sealing arrangement according to the preamble of claim 1, but in particular according to one of claims 1 to 20, characterized by an insert (16) made of heat-insulating and / or sound-insulating and / or mechanically reinforcing material.

22. Sealing arrangement according to claim 21, characterized by a fully or partially enclosed insert (16) in the flat gasket (5).

23. Sealing arrangement according to claim 21 and 22, characterized by a cork insert.

24. Sealing arrangement according to one of claims 1 to 23, characterized in that at least some of the sealing functions unfolding elements are elastic

Have lips (12, 14), which improve the sealing effect when resting on opposite elements / components by elastic deformation.