LU88474A1 - Sealing system between frames of a curtain wall type façade - Google Patents

Abstract

The invention relates to a system for sealing between the frames of a framework for a facade of the shutter-wall type, in which the gaps (5) between adjacent glazing elements (panes of glass) (3,4) are open to the surrounding atmosphere and allow the natural elements (bad weather) to penetrate inside the framework. According to the invention, this system comprises, in combination, a primary seal (6) made of elastomeric material, positioned vertically and set back inside the building relative to the facade, and a secondary seal (7), also made of elastomeric material, a first part (7b) of which forms a flap which extends horizontally, between two crossmembers of superimposed frames (2), in the direction of the facade, between the primary seal (6) and the facade, whereas a second part (7a), joined to the first part and rising perpendicularly to the latter, extends to the rear of the primary seal (6), relative to the facade, and is inserted between facing vertical surfaces of the two adjacent frames. <IMAGE>

Description

WATERPROOFING SYSTEM BETWEEN FRAMES OF A FRAME FOR A WALL-CURTAIN TYPE FACADE.

The present invention relates to a new sealing system between frames of a frame for a curtain wall facade.

It is known that, for the realization of the framework of fully or partially glazed facades, frames consisting of mechanical profiles are used which are produced in parallel in the factory, which are assembled in the factory and not on building sites.

These frames are juxtaposed longitudinally or vertically, and the air and water permeability of the facades thus produced is naturally dependent, among other things, on the tightness of the junction between frames.

For this purpose, various sealing systems are used, using in particular: - silicone seals on the bottom of the joint between frames; - extruded joints, made of EPDM or a similar material, which have a V cross section, the two branches of the V being glued or clipped against two contiguous sides of two adjacent frames.

These sealing systems are generally arranged in the immediate vicinity of the facade, in front of the frame structure.

The present invention aims to provide an air and water tightness system, which is offset inwardly relative to the facade, so as to allow water to penetrate vertically between the frames, to re-evacuate it. outwards along a longitudinal plane.

This inward shift aims to ensure better balancing of the pressures prevailing inside and outside the building, at the level of the sealing system.

By shifting the sealing system inwards, it is also possible to recover any water infiltration between frames and crosspieces and to evacuate them to the outside. To this end, the subject of the invention is a sealing system between the frames of a framework for a curtain wall type facade, in which the spaces between adjoining glazings are open to the ambient atmosphere and allowing the weather to penetrate towards the interior of the frame, this system being characterized in that it comprises in combination a primary seal made of an elastomer, arranged vertically and offset towards the interior of the building with respect to the facade, and a seal secondary sealing, also made of an elastomer, a first flap portion extending horizontally, between two crosspieces of superimposed frames, in the direction of the facade, between the primary seal and the facade, while '' a second part, adjoining the first and straightened perpendicular to it, extends behind the primary seal, relative to the facade, and is interposed between vertical surfaces fa facing the two contiguous frames.

Advantageously, the primary seal will be housed in vertical recesses of the frames and will have fins projecting from its surface and pinched and deformed between the body of the seal and the side walls of its housing.

Similarly, the second part of the secondary seal arranged vertically behind the primary seal will include fins projecting from its surface, these fins being pinched and deformed between the facing surfaces of the two frames. .

In a particularly preferred manner, this second part of the secondary seal can be folded back on itself to cover part of a frame projecting vertically, which is engaged in a recess in the immediately upper frame.

The two seals can be made of an elastomer such as EPDM or the like.

The accompanying drawings illustrate a form of implementation of the invention. They have no limiting character and if, in particular, the structure shown comprises a filling of the glued exterior glazing, it could receive any other type of filling, either with exterior glazing bead, or with window clamps and hoods, etc. Furthermore , the frame and the frames, which are of a type known in the art, will not be described in detail, any more than their method of assembly.

In these drawings:

Figure 1 is a partial horizontal section along the line I-I in Figure 2;

Figure 2 is a partial vertical section along line II-II of Figure 1.

In the drawings, there are two parts of frames 1 and 2 superimposed, forming part of the framework of the facade to be sealed, of which there are glazings, respectively double glazing 3 and single glazing 4. Space 5 between adjacent glazing is open to the atmosphere, so that bad weather can penetrate towards the framework constituted by the frames according to the arrow F- | _ of FIG. 1.

In order to ensure primary sealing, an elastomer gasket δ is placed vertically behind the facade and is housed in

A second seal 7, also made of elastomer, comprises a part 7_a, arranged vertically behind the seal 6, which is folded back on itself so as to cover a vertical projecting part 8 of the lower frame 2 and to be pinched between this part 8 and the side walls of the housing 9 of the frame 1 in which it is engaged. This part 7a of the seal 7 thus provides a secondary seal at the rear of the seal 6.

It has on its surface projecting fins intended to be compressed between the body of this part 7a and the walls of the recess 9, to ensure the seal and avoid any disengagement of the part Ί &.

This extends between the seal 6 and the facade by a substantially horizontal part 7b, forming a flap, to which is attached and which is interposed between the frames 1 and 2. The water infiltrations at the rear of the seal 7 are thus collected by the part 7a and evacuated by the latter on the flap 7b, along the arrow F £ (FIG. 2) in the direction of the facade, to be collected and to be evacuated towards the outside at 10.

The sealing system according to the invention therefore uses a sealing plane offset towards the interior of the building, the water thus being able to penetrate between the frame structures, vertically, and being re-evacuated towards the outside each time vertical junction of frames.

As indicated above, it will be noted that the use of a primary seal and a secondary seal, that is to say of two sealing barriers, has the advantage of being able to balance the differences between the two barriers. of pressure existing between the interior and exterior of the building.

Finally, it should be noted that the sealing system according to the invention allows free horizontal and vertical expansion of the frames, which the prior systems do not usually allow.

Claims (4)

1- Sealing system between frames of a framework for a curtain wall type facade, in which the spaces (5) between adjoining glazings (3,4) are open to the ambient atmosphere and allow weather to penetrate towards the inside the framework, this system being characterized in that it comprises in combination a primary seal (6) made of an elastomer, arranged vertically and offset towards the interior of the building with respect to the facade, and a secondary seal (7), also made of an elastomer, of which a first part (7b) forming a flap extends horizontally, between two crosspieces of superimposed frames (1,2), in the direction of the facade, between the primary seal (6) and the facade, while a second part (7a), adjoining the first and straightened perpendicular to it, extends behind the primary seal (6), relative to the facade, and is interposed between vertical surfaces s e vis-à-vis the two contiguous frames. 2- System according to claim 1, characterized in that the primary seal (6) is housed in vertical recesses of the frames and has on its surface fins projecting and pinched and deformed between the body of the seal and the walls side of its housing (s). 3- System according to one of claims 1 and 2, characterized in that the second part (7a) of the seal (7) disposed vertically comprises fins projecting from its surface, these fins being pinched and deformed between the facing surfaces of the adjoining frames. 4- System according to one of claims 1 to 3, characterized in that the second part (7a) of the seal (7) secondary seal is folded back on itself to cover a part (8) of a frame making vertically protruding, which is engaged in a recess (9) of the immediately upper frame.