EP1452657B1 - Facade with insulation block - Google Patents

Abstract

The facade, consisting of a support construction (7) with several supports for the mounting of facade elements (4) such as glass panes, has a pressure rail (2) which presses the facade element against the supports. A seal is provided between the pressure rail and facade elements, and an insulating block between the pressure rail and supports. The facade, consisting of a support construction (7) with several supports for the mounting of facade elements (4) such as glass panes, has a pressure rail (2) which presses the facade element against the supports. A seal is provided between the pressure rail and facade elements, and an insulating block between the pressure rail and supports. The insulating block (1a) and seal (1) are constructed in one piece and form a unit (110), and the unit may be manufacture from one or different materials.

Description

The invention relates to a facade which consists of a support structure with a plurality of carriers, which holds facade elements such as panels, glass panes and the like, wherein a pressing bar is provided which presses the facade elements against the carrier, provided between the pressing bar and facade elements a seal and between pressing bar and Carrier an insulating block is arranged, wherein insulating block and seal are integrally formed and form a unit.

The aforementioned facades are already known, for example, from the German Utility Model 299 18 219 of the Applicant. The aforementioned facades are used in particular for low-energy houses. In this case, it is particularly important to avoid each thermal bridge as effectively as possible in order to achieve the highest possible thermal insulation. In this case, in particular, the edge region of the facade parts of great importance, since in the edge region, the high thermal insulation of the facade parts naturally no longer exists and here, of course, easily thermal bridges can arise. To improve the thermal insulation is proposed in this utility model to form the thermal insulation of two Dämmkörperzu.

The EP 0 566 070 describes a thermally insulated glazing system for facades with an outer sealing profile on which a thermally insulating material positively, positively or materially connected to each other, for example by coextrusion, so that they form a one-piece sealing profile. This sealing profile is fastened by means of a cover in a recess of the sealing profile on the post profile. The sealing profile seals two adjacent glass panes.

In addition to the highest possible thermal insulation, it is also advantageous if the facades are easy to install.

The invention has set itself the task of realizing a facade, as described above, which is as easy to assemble and has improved insulation.

To solve this problem, the invention is based on a facade, as described above, and suggests that the insulating block protrudes into the area between the facade elements. Thus, the interior is protected from the weather and insulated. This forms the seal and insulation block an integral unit. The number of individual components of the facade is thereby reduced. The assembly is facilitated because fewer components are to be mounted at the Monatage. Also, the time savings are not insignificant, since fewer components are to be taken by the installer in hand, to set this and fix.

Due to the one-piece design of the gasket and the insulating block, it is not necessary to fix a large number of individual components against one another during the assembly of the facade or, for example, to align and fix them relative to the pressing strip. There are also no preparatory work more necessary in the way that first the seals are to be connected to the insulating block and then this combined component is installed therein. Thus, not only facilitates the assembly of the facade according to the invention, and the preparatory work is significantly reduced by this proposal according to the invention. The impermeability of the facade is also improved because the seals can no longer slip during assembly, which has often occurred in solutions according to the prior art.

But also the production of the individual components for the facade according to the invention is simplified. In general, the seal or the insulating block are produced in an extrusion process. For this purpose, individual tools are necessary. The effort for the tools also decreases by the proposal according to the invention, since the unit of insulating block and seal, for example, in a tool can be produced.

According to a preferred embodiment of the invention, the unit of insulating block and seal is made of a material. It is suitable in particular for a foamed material made of polyethylene or a rigid foam such as polyurethane. In particular closed-cell foams have the advantage that they have good thermal insulation properties, so that on the facade of a building good thermal insulation is created.

For the production of Dämmblock- and sealing unit EPDM plastic (ethylene / propylene (Diem) copolymer) or sponge rubber has proven to be particularly favorable. It can be made in various hardnesses, with a compromise medium hardness both satisfactory thermal insulation and sealing properties are achieved. The unit of insulating block and seal can be made of a material in one operation.

According to another variant of the invention are insulating block and gaskets made of different materials, which are manufactured individually and then assembled or made in one operation and assembled. Both parts can be glued together, for example, after their production. When it comes to thermoplastics, it is also possible to merge the two parts together, or means are provided for connecting these parts to one another in other ways, for example by latching.

As already mentioned, EPDM plastic is excellent for both embodiments of the invention, since this plastic can be produced in different hardnesses and so a softer version for the insulating block and a harder version for the seal can be used.

In order to achieve good heat-insulating properties of the insulating block, EPDM plastic with a hardness of approx. 30 to 40 Shore is used. This plastic in this hardness is also known under the name "sponge rubber". For the material for the seal, a hardness of 60 to 70 Shore is selected.

These two parts of the unit are produced individually, for example, in an extrusion process. Advantageously, they are strip-like and their required length is achieved by cutting to length of an endless strand or they are already made only in the specific length of the extrusion machine. Subsequently, the Dämmblock- and sealing strand are connected together.

In particular, when using EPDM plastic of different hardness is also a co-extrusion process, that is, the individual strands are connected during their production equal to each other. The step of connecting both parts together is eliminated. In this way, the manufacturing costs can be significantly reduced become.

According to the invention, two mutually contradictory parts are summarized. For a good thermal insulation property is therefore relatively soft material with poor thermal conductivity of advantage, which is actually not necessarily suitable for the formation of a seal. However, the invention includes both solutions in which an insulating block and sealing strip are each produced individually and connected afterwards in a suitable manner, for example by appropriate thermal processes or with the support of adhesives, which also in the context of the invention leads to a one-piece compound, or the unit is made in a coextrusion step, producing and joining areas of lower and higher hardness areas at the same time, with materials of different density, hardness or other physical properties.

The seals are molded laterally on the insulating block, whereby the unit of insulating block and seal forms a T-shaped cross-section. The insulating block extends between the facade elements, while the seals rest on the ends of the facade elements and are pressed by the pressure bar against the facade elements. Thus, the interior is protected from the weather. In this way, the gap between the facade elements is completely filled.

In a further preferred embodiment of the invention it is provided that the insulating block rests at least partially on the end face of the facade element. As a result, the entire unit undergoes a certain guidance between the two adjacent facade elements arranged adjacent to each other and thus also improves the seal.

To create air chambers that further increase the insulating properties, it is provided that a space remains between the facade elements and insulating block. The remaining air in this room circulates as little as possible or not at all and thus forms an air cushion.

The insulating block can be uniform in its cross section, so that it has the same distance to the facade elements in the upper and lower regions. The seals close wing-like to the insulating block.

According to an advantageous embodiment, the insulating block expands. Its cross section then has a T-shape. With the extended section of the insulating block leans against the front sides of the facade elements and prevents so that the facade elements move during assembly against each other. The seals close to the side of the extended section of the insulating block.

According to a further embodiment of the invention, the insulating block on its side facing the pressing bar on an area which has a higher hardness than the areas of the remaining insulating block. This area connects, for example, the two side seals arranged on the insulating block with each other. Advantageously, this area has the same hardness as the gaskets themselves. However, it may also have hardness lying between that of the insulating block and that of the gaskets, or the area is even harder than the gaskets themselves.

The area of higher hardness serves to stabilize the entire unit, the arrangement is on the outside, outside the actual insulation.

In order to further increase the thermal insulation properties of the insulating block, is provided to form recesses in the body of the insulating block. These recesses form air chambers in which the air does not circulate as in the space between the insulating block and facade elements and thus contributes to the insulation. These recesses are preferably provided in the region of the insulating block which extends between the facade elements. The Aussarungen can be channel or tube-like, wherein the strand, which is formed by the extrusion process, is produced as a hollow profile.

The recesses may also be completely enclosed in the material according to a further variant of the invention. This can optionally be achieved by increased pore formation during foaming of the EPDM plastic.

The cross section of the recesses is advantageously about 1 cm ² , but deviating also larger and smaller cross sections are possible.

More air chambers between the outside of the facade and the building are achieved by dividing the space between the insulating block and facade elements. The smaller this room or air chamber is, the lower the air circulation and the higher the insulating property.

In order to reduce this space, lips are laterally formed on the insulating block, so that this space is divided into individual chambers. Advantageously, these lips are elastic, so that they bend during insertion of the insulating block between the facade elements and rest against the front sides of the facade elements. In addition, they seal the façade against the effects of the weather, if the outer seal should be defective or if condensation builds up between the outside of the façade and the inside.

The unit of insulating block and seal is fastened by means of a pressing bar to the supporting structure of a facade, wherein the facade elements between the seal of the unit and an inner seal, which is arranged between the facade element and the supporting structure, are clamped. For attachment of the pressing bar on the support structure, a fastening profile is provided, which serves for receiving screws, rivets and the like.

To fix the pressing bar and Dämmblock- and sealing unit against each other, receiving grooves are provided in the press bar, for example, in which the unit is inserted. The unit of insulating block and seal has locking projections, which engage in these grooves. In this way, a pre-assembly of press bar and Dämmblock- and sealing unit is possible, which greatly simplifies installation on site. It is within the meaning of the invention possible that the seal is integrally connected to the insulating body and of the pressing bar, as described, is held.

Also, the object of the invention is achieved by an arrangement in which the pressing bar and the Dämmblock- and sealing unit are integrally formed with each other. Again, the number of individual elements is reduced and given a component two functions.

Moreover, it is an aspect of the invention to save by a clever and intelligent coupling of the functions of the various components in a new component individual components, so as to facilitate the assembly, but also to reduce the effort for the creation of the facade as a whole, because less individual Profiles or parts are needed.

In a further development of the invention, it is proposed that the insulating block, seal and also press bar in one piece are formed. By a clever, optionally further optimization of the areas in which otherwise a seal, an insulating body or a pressing bar are arranged, such a heterogeneous component can be further improved, in turn, the number of components is reduced.

It is advantageous, for example, to produce this component, which is produced as a profiled product, for example in an extrusion or coextrusion process, which makes it possible to realize regions with higher and regions with lower hardness, whereby, for example, on a component for the seal the hardness is increased edge, in order to achieve sufficient stability and at the same time between the facade elements a softer area (with higher air entrapment) of the insulating block can be formed.

Fig. 1 bis Fig. 6:

jeweils in einem Schnitt durch ein Detail der erfindungsgemäßen Fassade.

Further variants according to the invention are shown in the drawing. Show it:

Fig. 1 to Fig. 6:

each in a section through a detail of the facade of the invention.

In Fig. 1 a first variant of the embodiment according to the invention is shown.

The facade has a support structure 7, which are arranged for example in a mullion and transom construction. This support structure 7 carries the actual facade, that is, the facade elements 4. These are, for example, as insulating glass panes or as panels and so on, be formed.

In order to attach the facade elements 4 to the supporting structure 7, a fastening profile 6 is provided. The Fixing profile 6 is for example T-shaped, wherein the central web forms a screw channel to receive a fastening means for fastening the pressing bar 2. The middle web, which forms the screw, extends between two adjoining facade elements. 4

Between the facade element 4 and the supporting structure 7, which is often arranged on the inside of the building, an inner seal 5 is provided, which is hat-like manner via the fastening profile 6 pluggable.

The screw channel of the fastening profile 6 has internal grooves in order to provide as secure as possible a hold for the fastening means, for example a bolt or a fastening screw. In order to fix the inner seal 5, the inner seal has a strip engaging in the upper part of the screw channel. The pressing bar 2 is pressed by an unillustrated fastening means, for example a fastening screw or bolt and so on, against the facade element 4, whereby the facade element 4 is pressed against the support structure 7 and held so , The fastening means or the fastening screw is not shown.

A cover strip 3, which is arbitrarily optically shaped, conceals the pressing bar. 2

Between the pressing bar 2 and the facade element 4, the outer seal 1 is provided.

Between the pressing bar 2 and the support structure 7 of the insulating block 1a is arranged.

According to the invention it is proposed that the left and the right seal 1 is made in one piece with the insulating block 1a. The production takes place here as so-called coextrusion. The result is a heterogeneous profile product, which has a different hardness in the region of the seal, as in the area between the facade elements. For example, the material of the seals 1 made of EPDM plastic, as usual in the sealing area, made with hardnesses between 60 and 70 Shore. However, the insulating block 1a is made of foamed EPDM (for example sponge rubber). This results in the insulating block 1a hardening of only 30 to 40 Shore and thus significantly improved insulation properties.

A one-piece design of the insulating block with the seals offers both advantages in assembly due to a smaller number of components as well as in the construction at all, since the separate production of sealing profiles on the one hand and insulation block profiles on the other hand is reduced.

As has already been described, the thermal insulation is of utmost importance, especially in the edge region of the facade elements. By skillfully filling the joint area between two facade elements, the thermal insulation is to be optimized accordingly so that as far as possible there are no sharp cracks in the course of the isotherms. In any case, the dew-line should be as far outside as possible in order to avoid condensing or sweating of the facade. The arrangement according to the invention makes it possible to optimize the insulating block accordingly.

The insulating block 1a is T-shaped. The central web of this T is between the two facade elements with a certain distance to the end faces. This makes it possible to compensate for corresponding dimensional differences. In the embodiments shown here, the central web of the T-shaped insulating block 1a rests on the inner seal, which is attached to the screw channel-like fastening profile 6. The space 8 between the end face of the facade element 4 and the web of the insulating block 1a also forms an air chamber in which the air does not circulate as possible.

The transverse web of the T-shaped insulating block 1a carries at its respective lateral ends the seals 1. Conveniently, the one-piece sealing / insulating block 110 is formed as profiled goods strip-like and ultimately produced infinitely in an extrusion process.

An advantage of this invention is that it is desirable to effectively dampen just the intermediate region between two adjoining facade elements 4 that no thermal bridge is formed or the heat conduction is not better as in the facade element 4 itself. For this purpose, various measures are possible. On the one hand, it is possible to introduce appropriate insulation material in the intermediate area. Another possibility is to provide recesses 1b, which are arranged in the insulating block 1a and which is located, for example, between the respective opposite end faces of the facade element 4.

It is advantageous not to choose these recesses 1b too large, so to leave relatively small, in particular to achieve that the air contained therein does not circulate. Does not circulate this air, so it is standing, then the thermal insulation property is significantly improved again. Experiments have shown that this cross section should not exceed about one square centimeter, which is not intended to constitute a limitation of the invention, but it essentially depends on the fact that the recess 1b is sufficiently small that no circulation of the air is formed.

To facilitate assembly is provided in the press bar 2, that there grooves 11 are incorporated or arranged, which are suitable to receive corresponding locking projections 10 or lugs of the integrally formed seal / insulating block 110 for a reliable composite.

In Fig. 2 a further variant of the invention is shown. As in Fig. 1 already stated, it is provided to form the seal 1 of a harder material, optionally a harder EPDM material. In the variant in the Fig. 1 These harder areas are confined to the outer sealing areas, ie the lateral edge areas of the transverse web of the T-shaped insulating block 1a. In the embodiment shown here, the harder material is arranged in a region 120 between the seals 1 such a strip-like manner that it connects the sealing areas together. The harder material thus stiffens the Dämmblock- and sealing unit and improves stability.

The design after Fig. 2 improves the stability of the whole unit.

In the variant after Fig. 3 rectangular recesses 1b are provided instead of circular recesses 1b in the insulating block 1a. In the example shown here, two recesses 1b are arranged, without wishing to restrict the invention to one, two or more longitudinal recesses. Depending on the design of the facade elements 4 or the facade as a whole, it may be advantageous to arrange a larger number of recesses 1b.

Furthermore, the invention proposes, in particular to increase the thermal insulation again, that the lateral space 8 between the end face of the facade element 4 and the Insulating block 1a is divided by a laterally projecting lip 1c. This lip 1c, which has a certain elasticity to securely attach to the front side of the facade element 4, divides the strip-like space 8 between the end face of the facade element 4 and the insulating block 1a or the mounting profile 6 again, to finally also here a circulation of air prevention. It is also again advantageous that several lip-shaped webs 1 c are arranged one behind the other, if, for example, relatively thick facade elements 4 are to be installed. By suppressing the air circulation, the thermal insulation is improved. As already described, the air circulation is suppressed if, due to a subdivision, air chambers 9 are created in which an air is no longer able to circulate, ie a standing air column is formed.

In Fig. 4 a further variant of the invention is shown. In order to optimize the thermal insulation, several air chambers 1b are proposed here, in which case the upper, outer part of the insulating body 1a is guided to the end faces of the facade element 4 (for example a glass pane) in order to achieve the same result, namely the air gap to To reduce the front side of the glass pane and thus improve the thermal insulation.

In the Fig. 5 Bezeichte embodiment of the invention dispenses with a heterogeneous structure of the sealing and Dämmblockeinheit, which makes the production cheaper.

In a further variant according to the invention it is provided that as in Fig. 6 shown, the insulating block 1a has a further latching projection, wherein the pressing bar 2 has an additional groove for fixing or receiving the insulating block 1a.

It is clear that the various individual variants that are proposed, of course, in the context of the invention are partially combined with each other.

Claims (15)

1. Facade comprising a beam construction (7) with several beams which holds facade elements (4) such as panels, glass panes and the like, wherein a press rail (2) is provided pressing the facade elements (4) towards the beams, between press rail (2) and facade elements (4) a seal (110) is provided, and between press rail (2) and beam an insulating block (1a) is arranged, wherein insulating block (1a) and seal (1) are manufactured in one piece and form a unit (110), characterised in that the insulating block (1a) projects in an area between the facade elements (4).
2. Facade according to claim 1, characterised in that the unit (110) of insulating block (1a) and seal (1) is manufactured of one material.
3. Facade according to one or both of the preceding claims, characterised in that the unit (110) of insulating block (1a) and seal (1) consists of different materials.
4. Facade according to one or more of the preceding claims, characterised in that as material for the insulating block (1a) foamed plastic is provided, and/or the insulating block (1a) consists of foamed EPDM.
5. Facade according to one or more of the preceding claims, characterised in that the material of the insulating block (1a) has a hardness of about 30 to 40 Shore, and/or as material for the seal (1) a plastic, for example EPDM plastic, is provided having a hardness identical to or larger than the one of the insulating block (1a), and/or the plastic for the seal (1) has a hardness in the range of 60 to 70 Shore.
6. Facade according to one or more of the preceding claims, characterised in that on the side of the insulating block (1a) facing the press rail (2) an area (120) with a higher hardness than the hardness of the rest of the insulating block (1a) is joined, and/or at both sides of the insulating block (1a) a seal (1) with higher hardness than the hardness of the insulating block (1a) is joined, and the area (120) connects both seals (1).
7. Facade according to one or more of the preceding claims, characterised in that the insulating block (1a) is T-shaped, and carries at its side ends the seals (1), and/or the insulating block (1a) and the seal (1) are formed like rails, and/or insulating block (1a) and seal (1) are connected firmly to each other.
8. Facade according to one or more of the preceding claims, characterised in that the insulating block (1a) and the seal (1) are connected to each other by gluing, and/or the insulating block (1a) and the seal (1) can be manufactured in an extrusion process, and/or insulating block (1a) and seal (1) are co-extruded, and/or the insulating block (1a) has one or more recesses (1b).
9. Facade according to claim 8, characterised in that the recesses (1b) are provided in the area between the facade elements (4), and/or the recesses (1b) are designed channel or pipe-like or are enclosed completely in the material of the insulating block (1a), and/or the cross section of the recess (1b) is about 1 cm².
10. Facade according to one or more of the preceding claims, characterised in that the unit (110) of insulating block (1a) and seal (1) is held by the press rail (2), and/or a space (8) is provided between the insulating block (1a) and the facade elements (4).
11. Facade according to one or more of the preceding claims, characterised in that the insulating block (1a) has in the area between the facade elements (4) laterally projecting lips (1c) which lean against the front faces of the facade elements (4), in the area arranged between the facade elements (4), and/or the lips (1c) are designed elastically.
12. Facade according to one or more of the preceding claims, characterised in that the insulating block (1a) fills the area between the facade elements (4) completely, and/or at least the material of the insulating block (1a) is planar, rail-like, and/or the insulating block (1a) is at least partly in contact with the front side of the facade element (4).
13. Facade according to one or more of the preceding claims, characterised in that the press rail (2) is attached to the supporting structure (7) of a facade by means of screws and a fastening profile (6), and/or the unit (110) of insulating block (1a) and seal (1) has catch projections (10) or carriers interacting with grooves (11) in the press rail (2), and/or the grooves (11) are provided with undercuts for the catching reception of the catch projections (10).
14. Facade according to one or more of the preceding claims, characterised in that the insulating block (1a) as well as the seals (1) each have catch projections (10) interacting with corresponding grooves (11) of the press rail (2) in a catching way, and/or the press rail (2) together with the seal (1), the insulating block (1a) or its unit (110) is designed in one piece by gluing or coextruding.
15. Facade according to one or more of the preceding claims, characterised in that the unit (110) also comprises the press rail (2).

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