WO2010139465A2

WO2010139465A2 - Mounting device for façade elements

Info

Publication number: WO2010139465A2
Application number: PCT/EP2010/003346
Authority: WO
Inventors: Stephanie Lindner
Original assignee: Lindner Fassaden Gmbh
Priority date: 2009-06-03
Filing date: 2010-06-02
Publication date: 2010-12-09
Also published as: WO2010139465A3; EP2438248B1; DE202009007782U1; EP2438248A2

Abstract

The invention relates to a mounting device for board-like façade elements (1), comprising a metal frame (2) disposed on the rear face of the façade element (1), wherein mounting anchors (3) can be mounted on the back side thereof, and an element (5) having an L-shaped cross section made of a material reducing heat conduction, the leg (5.1) thereof running perpendicular to the plane of the façade element being mounted to the front face of the metal frame (2), and the protruding leg (5.2) thereof holding the façade element (1) in contact with the metal frame (2).

Description

Fastening device for facade elements

The invention relates to a fastening device for facade elements, in particular for facade elements provided with a frame, such as glass plates, on a building facade.

One of the objects of the present invention is to reduce the heat transfer between the back of the facade elements and the front of the building facade. Another aspect is to provide the simplest possible structure of the fastening device with low production costs without sacrificing stability.

According to the invention, in or on the frame surrounding the facade element, a heat conduction reducing element (hereafter Thermosteg) is provided between the front side and the rear side of the facade element. As a result, the heat transfer is reduced from the front to the underlying area of the fastening device for the facade elements.

The reduction in heat transfer can be further assisted in that the fasteners for this heat conduction reducing element are attached to it so that they are not exposed on the front of the Theπnostegs, but concealed and preferably at a distance from the front of the facade element itself extend in the direction of the suspension of the facade element.

Other objects, advantages, features and applications of the present invention will become apparent from the following description of the embodiments with reference to the drawings. All described and / or illustrated features alone or in any meaningful combination form the subject matter of the present invention, also independent of their summary in the claims and their dependency.

The invention will be explained in more detail for example with reference to the drawing. Show it 1 is a cross-sectional view of the fastening device of two side by side facade elements,

3 shows a cross-sectional view of the approximately horizontally extending frame section of two superimposed facade elements, FIG.

Fig. 4 shows schematically the corner connection of sections of the Theπnostegs, Fig. 5 shows another embodiment of a corner joint, Fig. 6 shows a modified cross-sectional shape of the Thermostegs, and Fig. 7 shows a further cross-sectional shape of the Thermostegs.

Fig. 1 shows two juxtaposed facade elements 1 and 1 'in the form of glass plates, which are each surrounded by a metal frame 2 and 2'. For example, the glass plate 1 may have a rectangular shape, so that the metal frame 2 extends in a rectangular shape around the circumference or along the circumference of the glass plate 1. At the rear side of the metal frame 2 mounting anchors 3 are attached, by means of which the existing of the glass plate 1 and the frame 2 structure is attached to a facade of a building, wherein in the illustration of Fig. 1 at 4 an attached to the support structure of a building Plate element is shown, which is firmly connected to the supporting structure of the building and serves as a support element for the facade elements.

The rectangular metal frame 2 is composed of four frame members, two horizontal and two vertical elements, wherein at the corners connecting screws 2.7 are provided, which are shown on the left in Fig. 1 frame 2 'and in a screw groove 2.7a at the other, horizontally extending Engage frame element, as shown in the right frame 2 in Fig. 1. These connecting screws 2.7 are preferably arranged in the region of seals 11 and 12 near the end faces of the frame, wherein they are inserted into a chamber 2.2 from the outside, before the seal 11 is used. In the region of the seal 12, a bore is indicated in the hollow profile of the frame 2 'through which the connecting screw 2.7 can be inserted.

The four frame members preferably butt against one another at the corners, so that the connecting screws 2.7 shown on the left in FIG. 1 engage in the screw groove 2.7a of the adjacent frame element perpendicular to the plane of the drawing in FIG. This results in an exact positioning of the four frame elements relative to each other. On the front of the metal frame 2, an at least partially made of a plastic material, the heat transfer reducing element 5 (Thermosteg) is attached, which in the illustrated embodiment as existing plastic L-profile with three hollow chambers in the longer, in the transverse direction to the glass plate. 1 extending leg is formed 5.1, wherein the outer hollow chamber is designated by 5.4. With the protruding leg 5.2 of this Thermosteg 5 is a sealing element 6 on the outside of the glass plate 1 at. A sealing element 6a is on the back of the glass plate 1 in a groove of z. B. aluminum material consisting of metal frame 2 used.

The Thermosteg 5, through which the glass plate 1 is clamped on the metal frame 2, is formed of a stable plastic material, in particular of polyamide, wherein the pressure of the clamping of the glass plate 1 receiving leg 5.2 of the thermal yoke has a thickness dimension and / or a geometric shape, which ensures a permanent stable clamping of the facade element.

Fig. 6 shows a cross-sectional shape of a Thermostegs 5, in which at the base of the leg 5.2 and at the transition point between the two legs 5.1 and 5.2, a chamfer 5.3 is formed, so that the base of the leg 5.2 is widened. In this embodiment, the reproduced in Fig. 1 outer hollow chamber 5.4 is formed so that it extends into the widened base of the leg 5.2, as shown in FIG. 6 at 5.4 ¹ shows.

On the leg 5.2 a recess 5.6 is formed on the outside, in which the screw head of the screw 7 engages, as shown in FIG. 1.

In both embodiments of the Thermostegs 5 5.1 two protruding spaced legs are formed at the free end of the leg 5.1, which are provided on the insides with heels for a latching engagement with a strip-shaped projection 2.1 on the metal frame 2. By this latching engagement, the thermo-yoke 5 can be fastened to the metal frame 2 before the fastening screws explained below are introduced.

Preferably, the sealing element 6a lying on the inside between the facade element 1 and the metal frame 2 is designed so that it also reduces heat. transmission between facade element 1 and metal frame 2 is used. In the illustrated embodiment, this sealing element 6a is designed as a hollow chamber profile elastic and thicker than the outer, rigidly formed sealing element. 6

On the inner seal 6a, a sealing lip 6al is formed on the outer circumference, which projects beyond the circumference of the facade element 1 and the distance between the periphery of the facade element 1 and Thermosteg 5 seals on the inside by this lip 6al on the leg 5.1 of the Thermostegs. 5 is applied.

Preferably, in the gap between the outer periphery of the facade element 1 and Thermosteg 5 near the outside of the facade element, a further sealing element 60 is provided which seals the gap between the facade element 1 and 5 Thermosteg to the outside. This seal 60 is preferably made of a foam material, in particular of a closed-cell PU foam. This sealing element 60 serves not only for additional sealing of the gap between the facade element 1 and Thermosteg 5, but also to limit the air space between the facade element 1 and Thermosteg 5, in which by convection of the air heat transfer could be favored. Due to the smaller cavities convection is suppressed. As shown in FIG. 2, is divided by the seals 60 and 6al of the cavity between facade element 1 and 5 Thermosteg or metal frame 2 in three hollow chambers between the seals 6 and 6a.

As shown in FIGS. 1 to 3, in the structure substantially two cavities are each limited by seals, on the one hand, the cavity between the outer periphery of the facade element 1 and Thermosteg 5 and on the other, the cavity between the opposite Thermostegen 5 and 5 'adjacent facade elements, said the latter cavity is preferably substantially filled with foam material in order to avoid air convection, while the first cavity is kept free for the discharge of moisture ingress and is limited only in its cross section by the seals 60 and 6al.

With T an imaginary dividing line of the structure between the frame 2 and 2 'of the two juxtaposed facade elements 1 and I ¹ is only for explanation, with two exemplary embodiments are shown on the two sides of the dividing line. On the left in Fig. 1 Thermosteg 5 'is provided for its attachment to the metal frame 2 as an example a screw 7, which extends from the front of the Thermostegs 5' by the lan- gene leg 5.1 extends into the metal frame 2, which has a threaded bore for receiving the screw 7 in a protruding, formed as a bar approach 2.1, which runs along the frame. Instead of a threaded hole, a channel perpendicular to the plane of the drawing in the metal frame 2 or in the approach 2.1 can be provided, are screwed into the screws 7 and 70 with a self-tapping thread.

Preferably, in the approach 2.1 a groove is provided with a corrugation on the opposite inner sides, in which the screws 7 and 70 engage, as shown in FIG. 2.

By distributed over the circumference of the glass plates 1 arranged screws 7, the glass plate 1 or 1 * is clamped by means of the thermal yoke 5 on the metal frame 2 between the seals 6 and 6a.

To further reduce the heat transfer between the front and behind the glass plate metal frame 2, a shortened fastening screw 70 is provided on the right in Fig. 1 Thermosteg 5 as an example, which engages in the neck 2.1 of the metal frame 2 and with its screw head in the interior Hollow chamber of the leg 5.1 of the Thermostegs 5 ends, which is arranged at a considerable distance from the lying down in Fig. 1 front of the Thermostegs 5. For attaching the shortened fastening screw 70, a bore can be introduced from the front into the limb 5. 1 or through the limbs delimiting the outer hollow chamber 5. 4 and the middle hollow chamber, through which the fastening screw 70 is inserted and screwed into the metal frame 2 can. Due to the fact that the shortened fastening screw 70 does not extend to the front of the thermal web 5, the heat transfer between the front side of the facade element and the metal frame 2 arranged behind it can be significantly reduced.

To stabilize the connection between Thermosteg 5 and metal frame 2 can be used as an example at the right Thermosteg 5 in Fig. 1, a metal element 8 between the screw head and Thermosteg, through which the stability of the attachment of the Thermostegs 5 to the metal frame 2 is improved by both the screw head and the screw shaft each attack on a metal part. The metal element 8 may be in shape a washer or a metal strip with holes in the hollow chamber in the leg 5.1 of the thermo track are used.

On the left half of Fig. 1, a plate-shaped metal element 8 a is reproduced on the outside of the Thermostegs 5, through which the longer screw 7 extends, wherein the screw head rests against the metal element 8 a. Such a metal element 8a, which extends substantially over the width of the leg 5.2 of the thermal yoke, is preferably also used as a corner connecting element, as will be explained in more detail below with reference to FIG.

On a facade element distributed over the circumference also longer screws 7 and shortened screws 70 can be provided.

Regardless of whether on the front of the Thermostegs 5 a hole for a shortened fastening screw 70 or a continuous fastening screw 7 is provided, the front of the Thermostegs 5 is preferably covered by a cover 9, through which the enclosure of the glass plate 1 on the front looks very slim. This in cross-section U-shaped bar 9 can be clipped with the two angled legs on the thermostatic 5 by locking action. For attachment, laterally inserted screws or hollow pins 9.1 are provided in FIG. This cover profile 9 for the front of the thermo-yoke 5 may be made of metal or also of a plastic. Preferably, this cover strip 9 is made of aluminum, but it can also be made of stainless steel or brass.

At a distance from the front side 5 sealing lips 10 are provided laterally on the Thermostegen, which are inserted into a corresponding groove in the Thermosteg 5 and cover by conditioning against the opposite sealing lip 10 * at the opposite Thermosteg the gap between the two Thermostegen 5 and 5 '. As shown in FIG. 2, instead of a groove in the thermo-yoke 5, a cross-sectionally T-shaped extension may also be provided on the thermo-yoke, to which the sealing lip 10 is fastened.

The hollow chambers of the thermo-guide 5 may preferably have a foam filling to reduce the heat transfer, after a foam filling in the cavities better reduces the heat transfer than air in these cavities. Preferably, in the cavity between the opposite outer sides of the thermo sets 5 and 5 'within the sealing lips 10 and 10' introduced a foam filling, for example by inserting foam strips after mounting the Thermostege to improve the heat insulation between the outside and metal frame 2.

hi the approximately rectangular in cross section metal frame 2 are adjacent to the rear or inside of the Thermostegs 5 adjacent chambers 2.2 and 2.3 are formed, which are open to the outer periphery of the metal frame 2 out, wherein in the outer chamber 2.2, the sealing element 11 is inserted extends into the chamber 2.2 'of the opposite metal frame 2' and serves to seal the gap between the adjacent frames 2 and 2 '. This sealing element 11 is integral and not separated by the dividing line T. The corresponding, between the two metal frame 2 and 2 'extending seal 12 is inserted at the inner end of the metal frame 2 in a laterally open chamber or groove of the metal frame 2 and 2'.

By screwing the Thermostegs 5 with the metal frame 2 and the seals 10, 11 and 12 between adjacent metal frame, the structure is wind and rainproof.

The metal frame 2 has in the central region of its approximately rectangular longitudinal extension of the cross section preferably an approximately U-shaped section, the open side of which lies on the outer circumference of the frame 2. On an intermediate portion of the metal frame 2, which extends transversely to the plane of the glass plate 1, an elongated hollow chamber 2.4 is formed into which the fastening anchors 3 are inserted. With 2.5 a paragraph in the hollow chamber 2.4 is referred to, where the widened end of the fastening anchor 3 3.8 can come to rest. In 2.6, a groove in the hollow chamber 2.4 is formed, in which an angled approach 3.1 of the fastening anchor 3 engages, so that the fastening anchor 3 is held in the longitudinal and transverse direction in Fig. 1 in the metal frame 2 and can absorb the forces occurring on the metal frame 2 , With 3.2 rivets or screws are designated by means of which the plate-shaped fastening anchor 3 is firmly connected to the metal frame 2. The rivets or screws 3.2 are arranged in the laterally open, U-shaped central region of the metal frame. In the view of Fig. 1, the plate-shaped attachment anchor 3, as well as Fig. 3, extends from the vertical portion of the metal frame 2 in the direction of the panel connected to the facade element 4, in which a cross-sectionally T-shaped engagement cut 4.1 is formed, in which the fastening anchor 3 engages with a transverse web 3.3. In Fig. 1, this cross-sectionally T-shaped engagement cutout 4.1 is formed on the right side in the transverse direction to the fastening anchor 3 larger than the cutout 4.1 ¹ on the left side, so that by existing on the right side tolerances between plate 4 and anchor 3, for example Thermal expansion and assembly inaccuracies can be included.

At the transverse web 3.3 of the fastening anchor 3, a ring eyelet 3.4 is formed, which is provided with a thread and a threaded pin 3.5 receives, which, as shown in FIG. 3, is inserted in a cavity above the plate 4 and rests with the lower end on this , The plate 4 is provided with the T-shaped engagement cutout 4.1 (Figures 1 and 2). Through this threaded pin 3.5, the height position of the metal frame 2 can be adjusted relative to the plate 4 attached to the raw facade.

In Fig. 3, a bottom structure B of the building is schematically indicated above the threaded pin 3.5 receiving cavity. Under the fastening anchor 3 receiving and supporting plate 4 is schematically indicated at R a raw ceiling of the building on which the metal plate 4 may be fixed by dowels.

Fig. 3 shows on an upwardly projecting leg 3.6 of the fastening anchor 3 a hole 3.7, by means of which in Fig. 3 lower facade element 1 can be hung on a crane or the like. If, after positioning the lower facade element with frame 2 of the plate 4, the upper facade element 1 'with frame 2' is recognized, this projecting section 3.6 of the anchor 3 extends through a corresponding recess in the metal frame 2 'placed above it. The protruding section 3.6 is formed on the fastening anchor 3 between the widened end 3.8 and the angled projection 3.1 (FIG. 1), this section 3.6 forming an extension of the plate-shaped section of the fastening anchor 3.

As shown in FIG. 3, the transverse section of the metal frame 2 is formed with the same cross-sectional profile as the frame section extending vertically in FIG. In Similarly, in Fig. 3, the transverse Thermosteg 5 is formed with the same cross-sectional shape as in Fig. 1 vertically extending Thermosteg. 5

At the corners of the metal frame 2 of a facade element, the vertically extending Thermosteg 5 can be mitred and connected to the transverse section or the transverse sections of the thermo sets can butt together, with a corresponding cover can be provided at the corners.

Fig. 4 shows schematically in a front view blunt abutting portions of the thermo set 5 in front of the underlying metal frame 2, wherein the two ends of the blunt abutting thermo sets are connected by a connecting screw 14. The reproduced in Fig. 1 on the right Thermosteg 5 connecting screw 14 may, as shown, be made shorter, when the sections of Thermostege

5 are mitred at the corners and do not butt against each other as in FIG. 4.

The connecting screw 14 extends transversely through the vertically extending in Fig. 4 section of the Thermostegs 5 and engages the horizontally lying in Fig. 4 section of the Thermostegs 5 in the designated in Fig. 2 with 5.7 screw groove of the Thermostegs 5, along the inside hollow chamber in Fig. 2 runs. Here, the connecting screw 14 engages perpendicular to the plane of the drawing in Fig. 2 in this Schraubnut 5.7 a. In the Figs.

6 and 7, this Schraubnut 5.7 is arranged laterally from the center of the associated hollow chamber adjacent to the side wall of the thermal yoke 5.

Fig. 5 shows a plan view of the mitered sections of the cover strip 9, a corner joint of the sections of the Thermostegs 5, wherein in the plan view L-shaped plate member 8a made of metal by means of reproduced in Fig. 1 screws 7 on the leg of the 5.2 Thermostegs 5 is fixed by the frame-shaped structure of the Thermostegs 5 is stiffened and the Thermosteg 5 is covered when the plugged on this corner joint, mitred cover strip 9 should form a gap by thermal expansion. The cover strip 9 is connected by screws or pins 9.1 with the Thermosteg, as shown in FIG. 1. 1 and 3 described structure of glass plate 1, metal frame 2 with Thermosteg 5 and mounting anchors 3, two of which are provided on opposite sides of the metal tallrahmens 2, results in a simple and quick installation. The entire facade element with this structure can be prefabricated delivered to the site and - as shown in FIG. 3 - mounted on the attached to the support structure of the building plate 4 or placed. Also, a partial assembly of the individual elements can be made on the construction site itself, for example between fastening anchor 3 and metal frame. 2

As the figures show, the inner end of the metal frame 2 is at a distance from the front of the plate 4, so that only via the fastening anchor 3 is a connection of the facade element 1 including frame 2 with the building facade. The metal frame 2 itself preferably has a width corresponding to the front of the Thermostegs 5, so that a slender structure of the total consisting of the metal frame 2 and the Thermosteg 5 frame for the glass plate 1 results, through which the glass plate 1 at a distance from that of the Building facade attached plate 4 is kept. In the embodiment shown in FIGS. 1 to 3, the metal frame 2 is located behind the thermo bar 5 between the carrier plate 4 and the glass plate 1, as viewed from the front side.

As shown in FIG. 3, between the lower end of the upper glass plate I ¹ and lower, transverse Thermosteg 5 of the upper frame 2 'a glass carrier element 13 is arranged, on which the glass plate 1' rests for the relief of the Thermostegs 5. This glass carrier element 13 is inserted with a protruding edge on the inside in a groove of the metal frame 2 'and held in this way transversely to the metal frame T. This support element 13 is preferably made of metal.

In the embodiment according to FIG. 3, at the upper side of the lower glass plate 1, the sealing lip 10 adjoins a web 11a on the seal 11, so that the upper side of the connecting point between the thermo web 5 and metal frame 2 is covered by this web 1a and from above penetrating water is derived. The sealing lip 10 is preferably formed on the web IIa of the continuous, transversely to the two frames 2 and 2 ¹ extending seal 11 or formed integrally therewith. Furthermore, in Fig. 3, the seal 11 is inserted into the open on the outer circumference of the metal frame hollow chamber 2.3 of the metal frame 2 instead of the outer hollow chamber 2.2 in Fig. 1. The two on the outer periphery of the frame 2 open hollow chambers 2.2 and 2.3 are on the metal frame 2 therefore provided so that the seal 11 can be arranged on a frame member in the hollow chamber 2.3 and the adjacent frame member in the hollow chamber 2.2. At the corner joint of the frame elements so that overlap the seals 11 of the adjacent frame members in the two chambers 2.2 and 2.3.

By the thermal yoke 5, the outside of the facade with respect to heat conduction from the suspension device, in particular from the metal frame 2, separated, by means of which the facade element is attached to a building facade.

Instead of a glass plate 1, a plate made of a different material can be provided as a facade element, for example, sheet metal elements, plate materials, insulation or even window or door elements can be fixed in the manner described on a facade.

In the embodiment shown, the glass panel forming a facade element 1 is constructed of a two-layered front panel and a spaced inner glass panel. It could also be provided a three-layer structure, wherein a middle glass plate is arranged at a distance from the inner and outer glass plate. In such a thicker construction of the facade element 1, a correspondingly longer leg 5.1 of the thermal yoke 5 is provided. Fig. 7 shows an elongated leg 5.1 of the Thermostegs 5, wherein a further hollow chamber is formed in the extended leg 5.1 relative to the reproduced in Fig. 6 embodiment with three hollow chambers.

According to a further embodiment, at the transition region between the legs 5.1 and 5.2 of the Thermostegs 5 a cross-sectionally L-shaped metal strip can be provided, which is preferably coated on all sides on its circumference by the plastic material of the Thermostegs 5 and the corner joint between the two legs reinforced by a metal leg along the leg 5.1 and the other metal leg along the leg 5.2 of the thermal yoke 5 extends. In this embodiment, this L-shaped reinforcing insert is preferably arranged such that the fastening screw 7 (FIG. 1) extends through the arranged in the leg 5.2 metal leg of the L-shaped metal strip, resulting in a further stiffening of the structure.

In such a reinforced by a metal strip embodiment, the cross-sectional profile of the thermo-yoke 5 can be formed so that the cross-sectionally L-shaped reinforcing strip can be inserted later in the Thermosteg 5 for stiffening the leg 5.2.

After particular facade elements 1 made of glass have a very high weight, so that they can be handled only by a crane device, the structure according to the invention is preferably mounted so that initially the four frame elements are connected by the connecting screws 2.7 to a rectangular frame 2 and placed on a base whereupon the gasket 6a is attached to the frame 2, if it has not previously been attached to the frame members. Then the facade element 1 is placed on the frame 2 by means of a crane device. Then the four sections of the Thermostegs 5 are placed on the strip-shaped projections 2.1 of the frame, wherein the approach 2.1 cross leg 5.5 of the thermo-stem with the approach 2.1 by the provided latching engagement engage. After the Thermosteg 5 is made of a stiff material, the Thermosteg 5 z. B. are placed by means of hammer blows on the approach 2.1, wherein the Thermosteg is fixed by the latching engagement in its position. Thereafter, the fastening screws 7 and 70 are introduced, optionally with the interposition of the L-shaped corner connector 8a (FIG. 5), wherein the thermo-yoke 5 is braced by the screws 7 and 70 with the metal frame 2 with the interposition of the facade element 1. Thereafter, the cover strip 9 is applied and the facade element 1 can be handled with the metal frame 2 as a unit.

Before placing the sections of the Thermostegs 5 Schaumstofπeisten can be inserted into the hollow chambers of the Thermostegs.

Claims

claims

1. Fastening device for plate-shaped facade elements (1), comprising a at the back of the facade element (1) arranged metal frame (2), on the back fastening anchor (3) can be fastened, and a cross-sectionally L-shaped element (5) of a the heat conduction reducing material, which is fastened with its transversely to the plane of the facade element extending leg (5.1) on the front of the metal frame (2) and with its protruding leg (5.2) the facade element (1) on the metal frame (2) adjacent.

2. Device according to claim 1, wherein the heat conduction reducing element (5) by means of screws (7, 70) is fixed to the metal frame (2), the. along the transverse to the plane of the facade element extending leg (5.1) through the element (5) are guided.

3. A device according to claim 2, wherein the fastening screws (70) in the heat conduction reducing element (5) are arranged sunk, so that the screw head is arranged at a distance from the front of the element (5).

4. Device according to one of the preceding claims, wherein the heat conduction reducing element (5) is designed as a hollow profile with in the leg (5.1) arranged behind one another hollow chambers.

5. Device according to one of the preceding claims, wherein the heat conduction reducing element (5) at least partially made of plastic, in particular of polyamide.

6. Device according to one of the preceding claims, wherein between the fastening screw (7, 70) and the element (5), a metal element (8, 8a) is used for stabilizing the holder.

7. Apparatus according to claim 6, wherein at the corner joints of the substantially perpendicular sections of the element (5) on the front side of an L-shaped, plate-shaped metal element (8 a) is mounted, which by means of screws (7) with the element (5 ) connected is.

8. Device according to one of the preceding claims, wherein on the element (5) on the outer circumference, a sealing lip (10) is mounted, which comes to rest on the sealing lip (10 ') of the adjacent element (5') of the adjacent facade element to to cover the gap between adjacent facade elements or adjacent elements (5).

9. Device according to one of the preceding claims, wherein the metal frame (2) has a width approximately corresponding to the voltage applied to the front of the facade element leg (5.2) of the element (5).

10. Device according to one of the preceding claims, wherein the metal frame (2) on the said element (5) facing the front side with a ausbuföπnigen approach (2.1) for receiving the fastening screws (7, 70) is provided, the opposite leg (5.5) of Overlie element (5) and engage by a latching connection with the approach (2.1).

11. Device according to one of the preceding claims, wherein the metal frame (2) with open towards the outer circumference HoMkammern (2.2, 2.3) is provided, in which at least one seal (11, 12) is arranged, which extends into the opposite hollow chamber (2.2 ') of the adjacent metal frame (2') extends.

12. Device according to one of the preceding claims, wherein the heat transfer reducing element (5) is covered on the front by a cover strip (9).

13. Device according to one of the preceding claims, wherein the facade element (1) between a seal (6) on the element (5) and a seal (6a) on the metal frame (2) is clamped and the inner seal (6a) elastic is trained.

14. Device according to one of the preceding claims, wherein between the outer periphery of the facade element (1) and the legs (5.1) of the element (5) a seal (60) near the outside of the facade element (1) is arranged and on the inner seal ( 6a) a sealing lip (6al) is formed, which projects beyond the outer periphery of the facade element (1) and on the limb (5.1) of the element (5).

15. Device according to one of the preceding claims, wherein the limb (5.2) of the element (5) at the base or at the transition to the limb (5.1) by a bevel (5.3) widened or thickened is formed and an outer hollow chamber ( 5.4) extends into the broadened base.

16. Device according to one of the preceding claims, wherein at the junction between the two legs (5.1, 5.2) of the element (5) is embedded a cross-sectionally L-shaped metal element for reinforcement in the plastic element (5).

17. Device according to one of the preceding claims, wherein the composite of four frame members metal frame (2) adjacent to the outer end side two adjacent hollow chambers (2.2 and 2.3), which is adapted to receive a continuous seal (11) between adjacent frame (2, 2 ') are open on the outer periphery of the frame.