EP2959073A1

EP2959073A1 - Method and system for lining a wall, suitable for holding vip's, and associated attachment kit

Info

Publication number: EP2959073A1
Application number: EP14706910.8A
Authority: EP
Inventors: Pierre-Henri Milleville; Thierry Duforestel; Roger Arese
Original assignee: Electricite de France SA; Siniat International SAS
Current assignee: Electricite de France SA
Priority date: 2013-02-19
Filing date: 2014-02-10
Publication date: 2015-12-30
Anticipated expiration: 2034-02-10
Also published as: FR3002255B1; WO2014128378A1; EP2959073B1; FR3002255A1

Abstract

The system for lining a wall can incorporate a layer of vacuum insulated panels (3) at a supporting profiled section (10) having an H-shaped section . An anchoring device (15) rigidly connected to the front branch (10b) of this profiled section (10) serves to attach the rear end (20a) of one or a plurality of spacing devices (20). The latter have a front end (20b) provided with a holding element (40) connecting to the profiled sections (5) of the secondary framework of the system. The profiled section (10), which has, on the rear branch (10a) of same, a bearing face that can be attached to the wall, makes it possible to take up the bearing forces transmitted from an outer cladding to each of the devices (20). During assembly, the spacing element (30) of a device (20) can be moved in translation and blocked by one of the holding element (40) and an opposing attachment member (22) in contact with the anchoring device (15).

Description

Method and system for wall lining, adapted for holding panels

PIV and associated fixing kit

TECHNICAL FIELD OF THE INVENTION

The present invention relates, in the field of building, the thermal insulation installations used for the wall lining. The invention relates more particularly to the dubbing systems which incorporate an insulating layer formed of insulating elementary panels, preferably of the PIV type (Vacuum Insulation Panel), and at least one typically rigid and substantially plane facing, for example a plate of plaster. The invention also relates to a fixing kit and a process for doubling a wall.

BACKGROUND OF THE INVENTION

The elementary panels of the PIV type comprise, in a manner known per se, an insulating porous core material (for example) having an open-cell microcellular or nanocellular structure, maintained under vacuum by a barrier envelope that guarantees gastightness. The barrier envelope is flexible and generally incorporates a heat-sealable film. These panels form plates of substantially constant thickness and have large sizes, for example 600 mm wide and 1200 mm long (other widths, for example 100, 300 mm, 400, 500 up to 1200 mm being of course available, the length generally varying between 500 and 2000 mm). The size of these panels would therefore be suitable for covering building walls for thermal insulation purposes. In addition, the thermal performance of these elementary panels leads to thicknesses that can be reduced to minimize the bulk of the thermal insulation system, the thickness of a panel being less than 60 mm, and preferably less than 35 mm. mm.

In the field, super thermal insulators are termed materials having, at ambient temperature, a thermal conductivity level of less than 25 mW m ^-1 K ^-1 . The PIV panels have a thermal conductivity of less than 7 mW m ^-1 K ^-1 , and more preferably less than 5 m W m ^-1 K ^-1 .

In the elementary panels of the PIV type, all the gases present are removed from the superinsulating porous material before being vacuum-packed within a flexible barrier envelope generally constituted (in a manner known per se) of a heat-sealable film which can be metallized which also makes it possible to avoid formation of thermal bridges at the slices.

The use of such elementary panels to achieve a thermal insulation installation is however delicate because the barrier envelope (very thin) is fragile. This type of panel does not tolerate compression or bending forces that are likely to lengthen the envelope locally and degrade its gas barrier properties.

The relatively large size of the panels and their very low thermal conductivity are very important thermal insulation performance advantages which can, however, be considerably reduced if the spacing between two adjacent panels is too great (problematic thermal bridges) and / or air can circulate at the junctions (associated problem of airtightness of thermal insulation of building walls).

Even minimal drilling of the barrier envelope causes the loss of the vacuum inside the envelope, leading to a very significant reduction in the thermal performance of the panels, the thermal conductivity then being able to increase by a factor of three or four , or even beyond if water vapor also enters the envelope (of the order of 20 mW m ^"1 K ^{" 1} or more instead of 5 to 7 mW m ^"1 K ^{" 1} for a panel intact vacuum insulation).

To facilitate the installation of panels by limiting the risks of degradation and minimizing thermal bridges, it has been proposed in US 2006/0265988 A1 to use a support profile of complex shape, metal or rigid plastic, which has a H section with a flat intermediate portion adapted to be interposed between two rows of insulating panels. This support profile comprises, perpendicularly to the flat intermediate portion, a bearing surface adapted to be fixed against the wall. The H section allows to block the vertical movements of the panels. The spacing between the outer face and the panel layer is obtained by a transition portion which extends, at the end opposite the bearing face, by a holding element which extends outwards in the junction between two superposed facing elements. The outer face may be mounted in abutment against end faces of the transition portion.

The arrangement described in US 2006/0265988 A1, however, has the following drawbacks:

- The profile used is complex and does not offer mounting flexibility (not possible for example to adjust the spacing between the outer face and the wall of the building); - It is necessary to use specific facing elements that can engage against the holding element in a superimposed mounting (unsuitable system for standard type facing plates having manufacturing tolerances).

It is also known from document FR 2849461, a kit for mounting and fixing a frame with an external facing, for maintaining and adjusting the distance to the wall of the external wall facing profiles. These profiles, typically metal, constitute the frame and has a U-shaped section with return wings. Such profiles are commonly called furs by the skilled person. The kit used to adjust the spacing includes a plurality of bracing devices and has:

- a bracing piece consisting of a threaded rod ending in a wall connecting plate; and

- A fur holding member, which has on the one hand a hole provided with a thread for engaging on the stem of the brace piece, and on the other hand a fixing portion with slots of clipping to cooperate with the wings of return of the fur.

Adjustment of the frame spacing is permitted by adjusting the length of the bracing device. The siding support furs are traditionally arranged vertically, although it is rare (for example, see Technical Opinion 9 / 03-759 of the Scientific and Technical Center for Building Construction) that horizontally disposed furs, particularly in two for wall heights between 2.40 and 6 m. This makes it possible to use a common plasterboard facing.

However, a disadvantage of the assembly method described in FR 2849461 is that it is unsuitable for the use of PIV type panels, this document is only intended to isolate with a filling material such as mineral wool which has not no insulation performance comparable to a PIV type panel.

GENERAL DESCRIPTION OF THE INVENTION

There is therefore a need for a mounting and fastening kit which makes it possible to efficiently and easily integrate elementary panels, in particular of the PIV type, in particular for large-area contruction applications in a building, with flexibility and facilitating the task of the operator.

The present invention is intended to overcome all or part of the aforementioned drawbacks. For this purpose, it is proposed according to the invention a kit for mounting and fixing structural framing members for the lining (with an outer face) of a wall of a building, suitable for the integration of panels insulators distributed in at least one layer of panels with rows of panels parallel to the wall (and parallel to the outer face), the fixing kit comprising:

- A support section having an H-section with an intermediate portion adapted to be interposed between two rows of insulating panels, the support profile having a bearing face that can be fixed against the wall, an attachment device being located opposite to the bearing face;

a plurality of bracing devices each extending between a first axial end in contact with the support profile and a second axial end intended to be in contact with one of the structural framing elements, given that the bracing devices (preferably non-metallic) each include:

- A fastener arranged in the first axial end and adapted to be fixed on the attachment device;

a holding element arranged in the second axial end and intended to maintain one of the structural frame elements; and

a bracing element integral with one of the fixing member and the holding member and adapted to enter into a locked relationship with the other of the fixing member and the holding member on the element spacer.

Thus, the insulating panels, for example of the PIV type, are held in front of the wall to be insulated by means of support means which are entirely separate from the panels, so that the insulating material remains perfectly intact during assembly and when efforts are exerted on the external facing, while bringing together as much as possible the adjacent PIV panels (the insulating layer is then essentially defined by the PIV panels, the interspaces being negligible). It is understood that the load to be applied to the panels can be advantageously reduced, and the wall element can be constructed with an easily adjustable thickness simply by actuating a locking position of the elements able to lock on the bracing elements (the bracing element can be moved in translation and locked by one of the holding member and the fixing member in contact with the attachment device). In addition, the fact of providing bracing devices connected in a typically removable manner on the side of the front face (opposite to the rear support face), facilitates disassembly operations that can then be considered. It is understood that the elementary panels can be recovered if necessary after such disassembly.

Thanks to these arrangements, elementary panels based on vacuum super insulated standard type (with a fragile barrier envelope) can be implemented without embedded protection, simply by fixing the panels on support profiles that form the primary frame . By using such a primary framework, time is saved for assembly and a cost reduction related to the use of standard manufacturing panels.

According to one feature, the support profile is made in one piece, preferably in plastic, the support profile having a thermal conductivity of less than 0.6 W m ^-1 K ^-1 at least at its intermediate portion. Thus, the one or more support profiles that are integrated in the layer (preferably a single layer) are made of thermally insulating material, for example plastic or polymer material (such as for example PVC or polyamides, filled polyamides, LDPE, HDPE, PP , PET or composite (such as those based on fiberglass)) with a small thickness (for example less than 5 mm, preferably less than 2 mm), and can wrap the edges of the panels in an airtight manner elementary. The support profiles made in one piece cover the edge of two panels for section H sections arranged between two rows, and allow to establish quick links with the secondary frame.

Due to the small thickness of the support profiles and the ability to select different sizes available for the panels (preferably PIV type), it can be considered that the panels of the layer extend over a surface substantially equal to the totality of the insulation wall surface, with a significant reduction in losses due to peripheral thermal bridging phenomena and airtightness between adjacent elementary panels.

In other words, the overall insulation performance of the panel layer may advantageously be very close to the measured performance for an elementary panel.

According to another feature, the attachment device comprises a slideway provided with two parallel tabs defining between them a slot, the two tongues having at least one projection towards the inside of the slot, and preferably two projections facing each other, for clipping the fastener, whereby the slide forms an anchor rail. It is understood that providing support profiles with this kind of anchor rail not only facilitates on-site assembly operations (and disassembly operations when the siding is removed) but also makes easy the adjustment of the distance between the different supports.

In various embodiments of the mounting and fastening kit according to the invention, one or more of the following provisions may also be used:

the intermediate portion in the H section has a constant thickness;

- The attachment device is formed integrally with a branch of the H-section which is shorter than the other branch (i.e. shorter in a transverse direction of the support profile), these branches may preferably have the same thickness;

- The bracing member comprises a rod portion which extends longitudinally along a first axis, the fastener being formed integrally with the bracing member in the axial extension of the rod portion.

- The fixing member comprises two parallel flanks and a male connecting member extending between these two sides and adapted to engage the support profile between the two tabs;

the two parallel flanks can engage against the support profile, outside the slot, and block the spacer element in rotation so that the first axis is maintained in a direction substantially perpendicular to the supporting face of the support profile;

- The bracing member is integral with the fixing member, the holding member being rotatable about the spacer member between an unlocked position and a locked position;

the holding element is formed in one piece which comprises a through hole for the spacer element, slots opening outwards in a periphery of the holding element and adapted to engage in a fur, and a lever for actuating the passage from the unlocked position to the locked position and vice versa by rotation;

the bracing devices have an adjustable length in said unlocked position; the bracing element comprises a rod portion which has a notched external surface, the rod portion extending longitudinally along a first axis, while the holding element comprises a duct (defining the orifice) which extends tubularly about a second axis and has a notched interior surface, knowing that the duct and the spacer element are arranged, when the first axis is substantially coincident with the second axis, for sliding the one in the other (in a first relative angular position) and for (in a second relative angular position) engaging between the notched outer surface and the notched inner surface to obtain the locked relationship of the holding element on the element spacer.

Furthermore, the invention also relates to a process for doubling a wall of a building which comprises:

- Fixing on the wall, directly or indirectly, at least one support section having an H-section with an intermediate portion which is preferably flat, by using a support surface of the support profile which s' extends transversely to the intermediate portion;

the laying of insulating panels to form a layer of panels comprising rows of panels of which a lower row is in contact from below with the intermediate portion of the support profile and an upper row is in contact from above with the intermediate portion of the support profile;

- Fixing on a fastening device which is part of said support profile, opposite the bearing face, at least one spacer element;

the engagement on each of the bracing elements of a support element for supporting a fur of an external cladding, according to a translation of direction substantially perpendicular to the wall, the holding element and the element bridging member forming part of a bracing device;

- after placement (with contact) of the holding member in a fur, blocking the translational movement of the holding member on the spacer element so as to adjust the length of the spacer device.

According to a feature, it is intended to fix the spacer element on a rail which is part of the support profile with a degree of freedom in translation along the rail, the position of the fur being adjusted by moving the device. bracing along the rail.

According to another feature, the insulating panels of the panel layer each have a plate shape and are arranged contiguously in the same row, each panel comprising a porous material resistant to compression and a gas-tight barrier envelope for maintaining an internal vacuum and which encloses the porous material. It will be understood that the support profiles make it possible to eliminate the interstices between the rows of panels and prevent air from flowing through the layer of PIV type panels.

The method advantageously makes it possible to form a layer based on PIV panels (in association with the support profiles) which is not only simple to assemble in situ, but also has continuity in terms of thermal insulation and watertightness. air from the insulated wall, reducing any air flow between the front and rear faces of the panel layer.

Thus, using the three-piece kit (support profile, spacer element and holding element), the advantages of manufacturing the panels in the factory (which facilitates the assembly on site of the system), reduction the duration of the construction site, accuracy on dimensions (typically of the order of a millimeter) while ensuring optimal thermal performance by limiting the disadvantages associated with the implementation of elementary panels PIV standard manufacturing.

Another object of the invention is to provide a system for doubling a wall of a building that is simple to assemble and that can have excellent thermal insulation properties.

For this purpose, it is proposed a system for doubling a wall of a building, comprising:

insulating panels, preferably each having a plate shape and comprising a porous material resistant to compression and a gas-tight barrier envelope for maintaining an internal vacuum and which encloses the porous material, the panels being distributed in at least one layer of panels with rows of panels;

- an external siding;

a secondary framework comprising structural framing members and forming a support for the external cladding;

a primary framework comprising at least one profile for fixing the panels in the layer, which then has a front face vis-à-vis the secondary framework and a rear face opposite to the front face, the primary framework comprising the least one support section which has an H-section with an intermediate portion that can be interposed between two rows of insulating panels, the support section having, transversely to the intermediate portion, a bearing face that can be fixed against the wall of the building;

- An anchor rail forming part of the support profile, located opposite the bearing face;

- bracing devices (preferably non-metallic) adapted to maintain a spacing between the outer face and the front face, and each comprising:

- A fastener adapted to be fixed in the anchor rail;

- a holding member for maintaining the secondary frame;

In this system, the support profiles have both a function of taking up the bearing forces exerted on the external facing because of the attachment of the bracing devices but also of the external airtightness by the lining. wrapping, typically with a very small clearance or tightly, PIV panels on their ends while ensuring the integrity of the envelope of the PIV panels. It is understood that the insulating material advantageously remains integral during assembly and when forces are exerted on the outer facing, while the PIV panels are very close to each other.

According to one feature, the secondary frame comprises furs connected, directly or indirectly, to at least one substrate of the building, the furs extending at a distance from the layer of insulating panels. BRIEF DESCRIPTION OF THE DRAWINGS

Other features and advantages of the invention will emerge during the following description of several of its embodiments, given by way of non-limiting examples, with reference to the accompanying drawings in which:

- Figure 1 shows schematically a first particular embodiment of a system for doubling a wall of a building for thermal insulation purposes;

FIG. 2 shows a vertical sectional view of an embodiment of a wall lining system similar to that of FIG. 1; FIG. 3 shows in more detail parts of the fixing kit used in a wall-doubling system mounted as illustrated in FIGS. 1 and 2;

FIGS. 4A and 4B show different views of a pivot holding member which forms part of the fixing kit shown in FIG. 3, FIG. 4B illustrating a locking configuration of this holding member on a spacer element;

FIG. 5 is an exploded perspective view of the holding element and the spacer element which forms part of the fixing kit shown in FIG. 3, here in a relative translation position;

- Figure 6 is a horizontal sectional view illustrating an alternative mounting kit for supporting insulating panels as in the embodiment of Figures 1 and 2;

- Figure 7 is a view similar to Figure 3 showing a variant with a fixation of a pivot in a hooking device of a PIV panel support profile; - Figure 8 is a perspective view showing a corner bracket used for connecting two layers of PIV panels arranged at substantially 90 °.

DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION

In the different figures, the same references designate identical or similar elements.

Embodiments of a wall doubling system 1 with a thermally insulating layer according to the invention are clearly visible in FIGS. 1 and 2. The wall-doubling system 1 has a primary framework 2 and several panels 3 of the same type. Standard PIVs without associated mechanical protection each having a parallelepipedal format with the same thickness (this thickness being typically the smallest of the dimensions of the panels 3). The panels 3 are mounted on the primary framework 2 and distributed in a layer which has several rows of panels 3 of the same width. This layer has a front face F1 clearly visible in Figure 1 and a rear face F2 (Figure 2) opposite to the front face F1. In a manner known per se and as shown in Figures 3 and 6, the insulating core 3a, porous, of the panel 3 is evacuated and enclosed in the sealed barrier envelope 3b which is preferably flexible.

FIG. 1 shows a wall lining with such a thermal insulation system 1 which includes a single layer of panels 3. The wall P1 to be coated can be of any kind, for example formed of bricks or blocks. grouted. Here, the insulating panels 3 are arranged in two rows and there is provided at least one support profile 10 connected directly to the wall P1, for example by gluing or by screwing, or kept parallel to the wall P1 indirectly (for example by means of uprights, profiles, and / or spacers located behind the layer of PIV panels This support profile 10 defines the junction between the first row and the second row of panels 3. The length of the support profile 10 may optionally be greater than the height of the wall P1 which is typically of the order of 2.5 m or more The support profile 10 is preferably made in one piece and has two parallel branches 10a-10b in one section in H (or possibly a U-shaped section) In this H-section and as illustrated in FIGS. 1 to 3, the rear branch 10a located on the side of the wall P1 (in the mounted state) extends from else of the inter portion mediator 10c being more extensive (forming a wider side of the support profile 10) than the front branch 10b located on the side of the outer face 8. However, the support profile 10 may also have a front branch 10b with at least the same dimensions as the rear branch 10a as can be seen in FIG.

Preferably, the support profiles 10 are formed of a single block of plastic material, for example polyamide, PVC, polyurethane resin or based on composite materials, glass fibers, optionally with metal particles (for example). polyamide PA 66 filled with 25% glass fibers). The support profiles 10 and the other profiles 1 1, 12 optional can be made with the same type of material. Each of the support profiles 10 here has a thermal conductivity less than or equal to 0.6 W m ^-1 K ^-1 and preferably less than 0.2 or 0.25 W m ^-1 K ^-1 . In order to minimize the heat conduction through the panel layer 3, a thermal conductivity less than or equal to 0.18

W m ^"1 K ^{" 1} is preferred for the material of the profiles 10, 1 1 and 12. It has been found that a too high conductivity and a too large spacing between two adjacent PIV type panels 3 were two major causes of degradation. insulation performance. This is why it is important to use a material with a low thermal conductivity of 0.6 W m ^"1 K ^{" 1} , especially with the use of profiles 10, 1 1, 12 which have typically a thickness of the order of 1-2 mm at the intermediate portion 10c. A thickness of the order of 3-4 mm is interesting provided that a material is used for the sections 10, 11, 12, which has a thermal conductivity that is approximately two times lower, preferably less than 0, 10 or 0, 07 W m ^"1 K ^{" 1} . The material is in this case considered as thermally very insulating. The advantage of using a single support profile 10 made in one piece at each of the junctions between the adjacent panels 3 is that the spacing between the two slices remains well below 5 mm, and preferably less than 4 mm . However, a rather abrupt degradation of the performance of the panel layer 3 has been noted when this gap reaches or exceeds 4 mm. In this case, conductive heat transfer takes place significantly at the junctions between the rows and the benefit of the super insulation in the panels 3 is very degraded, except to use in the junctions a material having a thermal conductivity s' approaching the better of the panels 3 type PIV. For reasons of cost of the support profiles 10 and any profiles 1 1, 12 and for the good mechanical strength of the layer, it is understood that it is preferable that the gap between the panels 3 (adjacent layers) is reduced less than 3 mm.

An adhesive tape of a kind known to those skilled in the art may optionally be used to cover the lateral junction (overlap at least on the side of the rear face F2) between two adjacent panels 3 and contiguous in the same row R1 or R2. This can make it possible to consolidate the direct sealed contact between the lateral edges of the panels 3.

With reference to the nonlimiting example of FIG. 2, the primary framework 2 comprises sections 10, 11 and 12 which make it possible to border two parallel sides of the panels 3 in the rows of panels 3 and which have sufficient rigidity to withstand twisting forces after connection to the wall P1. By way of non-limiting example, the support profiles 10 and any other profiles 1 1, 12 have a length that may exceed 120 cm and are arranged parallel to the plane P of the wall P1, here horizontally. A mounting configuration with these profiles 10, 1 1, 12 arranged vertically is also possible, the rows R1, R2 being in this case consist for example of insulating panels 3 juxtaposed.

A secondary frame 4 is also provided with profiles 5 of a kind known per se, for example furs of type "S47" that is easily found on the market. In this nonlimiting example, the sections 5 are arranged parallel to each other and can be arranged with the same spacing e1 from each other, for example of the order of 60 cm, and at a distance D1 from the wall P1 ( here a wall) significantly greater than the thickness e3 of the insulating panels 3 used. In the example of Figure 1, the profiles 5 of the secondary frame 4 are here U-shaped profiles with two return wings or furs. They are arranged vertically between a first rigid anchoring member 6, here a low rail 6 and a second rigid anchoring member, here a high rail 7, in which they are nested, held in the direction perpendicular to the wall P1. In a variant as illustrated in FIG. 2, the first and second rigid anchoring members 6, 7 comprise U-shaped profiles. The secondary framework 4 provides supports for an external cladding 8 which may be of a type known in the art. for example with plaster boards. The first and second rigid anchoring members 6, 7 are fixed in a manner known per se, directly or indirectly on at least one building substrate such as for example a floor 60 and a ceiling 70 (not shown in FIG. 1), and arranged between an outer cladding 8 of the system 1 and at least one wall P1 of the building. Of course, any other method of attachment to the floor 60 or ceiling 70 may be used, for example by direct or indirect attachment to a bonding zone formed on the substrate vis-à-vis.

The secondary framework 4 is typically metallic and the plates or similar parts constituting the outer face 8 are fixed in a vertical position on a secondary framework 4 which is held by a mounting and fixing system comprising spacer devices 20 each including a bracing member 30 and a holding member 40. This mounting system allows the connection of the profiles 5 of the secondary frame 4 to the support profiles 10 and possibly the profiles 1 1 -12 of the primary frame 2 with a spacing. The profiles 5 of the secondary framework 4, in particular when they are metallic, typically have a thickness of 0.3 to 1 mm, preferably of approximately 0.6 mm (this thickness may be less than the thickness of the profiles support 10). In variants, the structural framing members of the outer cladding 8 comprise non-metallic rigid sections or similar parts preferably forming a fur at least over part of the height of the bulkhead. Such structural framing members are provided with a fur and / or a connection of a type known per se, for example such as a clip which allows a snap-fastening of a so-called axial end before 20b of the bracing devices. 20.

Figures 1 to 3 show a frame 4 with profiles 5, here vertical, kept spaced at a distance D2 from the panel layer 3 with the aid of spacer devices 20. In the assembled state, the devices of FIG. bracing 20 extend from their rear axial end 20a to their forward axial end 20b at a height level H1 which coincides with the junction between two parallel rows of the panel layer 3. In the case of Figure 2, it is also provided at the bottom and top of this layer, to fix the profiles 1 1 and 12 with a U-shaped or L-shaped section of the primary framework 2, one on the floor 60 and the other on the ceiling 70. Optionally, the profiles 1 1, 12 may have a W-section with a spacer function and maintaining profiles 5.

As shown in the nonlimiting example of Figure 1, the wall P1 generally defines a plane P and it is understood that the panel layer 3 extends parallel to the plane P in the mounted state or the support profiles 10. Similarly and as illustrated in Figure 2, the outer face 8 is reported parallel to this plane, the distances D1 and D2 being provided constant.

In the mounted state as illustrated in particular in Figures 1, 2 and 6, the support profile 10 extends along a longitudinal axis A. The rear branch 10a defines a rear transverse face 13a here perpendicular to the intermediate portion 10c. In the case of a substantially flat wall P1, it is understood that this rear transverse face 13a forms a bearing face which can be directly fixed to the wall P1. It can be seen that the intermediate portion 10c, which may be flat, forms the bottom of a pair of grooves 14a-14b (respectively on the side of its first face, here upper, and its second face, here below) when the profile 10 each of these grooves 14a-14b makes it possible to maintain one side of at least one insulating panel 3 between the front branch 10 and the rear branch 10b.

In a variant with a support profile 10 having a U-section (that is to say whose branches 10a-10b extend only on one side with respect to the intermediate portion 10c), the intermediate portion 10c forms of course the bottom of a single groove 14a. Although the examples shown show a support profile 10 having only two parallel branches 10a, 10b, it should be understood that any other branch format can be used and possibly with a higher number of branches 10a-10b when desired. integrate several layers of panels 3 with a spacing between the layers.

The method of mounting the panel layer 3 by using the profiles 10, 11 and 12 will now be described with reference to Figures 1 -2, 3 and 6.

Before arranging the panels 3 of the PIV type, the operator installs the structural elements of the primary framework 2, in particular the support profiles 10 parallel to the wall P1 at both ends, for the desired height level H 1. The rear branch 10a of the U or H section support section 10 is attached to the with the aid of screws V or similar rigid fastening elements of the primary framework 2. The sections 1 1 and 12 with a U-section as shown in FIG. 2 can be fixed in a manner similar to the floor 60 and the ceiling 70. The attachment can be made with a space left between the wall P1 and the panel layer 3, in particular when the rear branch 10a is generally concave on the side of the wall P1 and has one or more support surfaces remote from the intermediate portion 10c.

Once the support profile or profiles 10 installed, the first row R1 of panels 3 is then formed by interlocking the panels 3 tightly in the groove 14b. It will be understood that the support profiles 10, which here preferably have an H-section, completely cover, in a sealed manner, the upper edge of the panels 3 of the first row R1. The second row R2 of panels PIV type 3 is implemented in a similar manner, filling the groove 14a. It is understood that several successive rows (at an increasing height level) can be formed identically, the insulating panels 3 of each layer here having a plate shape with corners 3c and being arranged contiguously.

In alternative embodiments, the support profile 10 may comprise elastically deformable means adapted to bear on the panels 3, for example on the side of the front face F1, in order to be able to adjust these panels 3 tightly in the grooves. 14a, 14b. According to one option, a layer of compressible cellular foam may cover the inner face or faces of the groove 14a and / or 14b associated with at least one row R1, R2 of panels 3, to tighten the panels of this row. Thus, the panel 3 can snap-fit between the vertical branches 10a, 10b of the profile 1 1 being protected by the compressible foam layer. The foam layer is for example U-shaped with a thickness of between 1 and 3 mm. The maintenance and the pressure on the edge and the lower end of the front and rear faces of the panel 3 are obtained by the nature and the thickness of the protective foam, leading to a free width less than 0.5 to 2 mm ( possibly less than 3 mm) to the thickness e3 of the panels 3 of the PIV type. The upper part of the compressible foam 15 can be beveled to promote the interlocking of the panel 3. The airtightness is ensured by the tight contact between the compressible foam and the outer surface of the panel 3. It is understood that it is a slight tightening that preserves the integrity of the panel 3. It is understood that the air flow is then limited in the grooves 14a, 14b and a Durable sealing can be achieved, so that it is possible to isolate the thin volume of air behind the panel layer 3 from the air gap formed between the front face F1 of the layer and the outer facing 8.

A similar clamping effect can be obtained on the front and rear faces of the panel 3 in a different way by using one or more beads reported or integrated in the shape of the support profile 10, these beads protruding inwardly from the grooves 14a, 14b. Alternatively, particularly when the support profile 10 is made of plastic, it is understood that one of the rear legs 10a or 10b before can have a sealing lip. More generally, it is understood that the use of pressure holding means may be useful to ensure airtightness and consider that one dimension in width for the grooves 14a, 14b may be suitable for several thicknesses for panel 3 type PIV.

In these mounting modes, without this being an obligation, it may be advantageous to substantially reinforce the airtightness of the layer of the panels 3 by applying adhesive strips (not shown and of a type known per se). at the junctions of the panels 3, and preferably by fixing these adhesive strips on the front branch 10b of the support profile 10. For this purpose, it can be seen in FIGS. 1 and 3 that the anchoring rail 15 or device ( s) similar connection (s) can be optionally spaced from each of the longitudinal free edges of the front branch 10b of the support profile 10, so that the front face of this front branch 10b has areas (for example two flat strips) adapted for fixing the ends of the adhesive strips for reinforcing the seal. These attachment zones are here formed on either side of the anchoring rail 15. This configuration is advantageous to avoid degrading the panels 3 at the time of laying such adhesive strips.

Referring now to Figure 8, an exemplary system can be seen to form a junction between two layers of panels 3 perpendicular or at an angle close to 90 ° at their intersection. To cover the corners, it is preferable that the PIV type panels 3 are supported by structural means in the form of the joining system 45 shown in Fig. 8 rather than using profiles. In this case, the width of at least one of the panels 3 which meet at the angle can be reduced if necessary, for example of the order of 300 mm against 600 mm for the panels 3 distant from the angle.

The joining system 45 comprises angle brackets arranged in the angle between a first wall forming the wall P1 to be insulated and another wall of splitting or similar to isolate which is not aligned with the wall P1. The bracket here comprises two plates 48, 49 having a comparable thickness and preferably equal to the thickness defined by the support profiles 10 behind the panel layer 3. Each of the plates 48, 49 may consist of two sheets made of plastic material separated by a light honeycomb. The latter makes it possible to obtain a thickness more or less equal to the thickness of the rear branch of the support profile 10 when the support profiles 10 are directly fixed on the wall P1.

The plates 48, 49 are arranged at 90 ° relative to each other and a thinning may be provided at the junction 50 between the two plates 48, 49 to allow angular adjustment. A relatively flexible hinge can thus be formed to allow installation on false walls. Each plate 48, 49 is connected by screws or similar members (not shown) to the corresponding wall, through at least two orifices 52. Screwing into the walls is achieved without the screw being flush with respect to the internal face F5 plates 48, 49, which prevents the risk of deterioration of PIV type panels 3 which may rest on a portion of a plate 55 at right angles (having the general shape of an "L" in this example). Similarly, the screwing through the rear branch 10a of the support section 10 is preferably carried out without the screw V protruding forward as shown in FIG.

The plate 55 at right angles here has two complementary and contiguous portions 55a, 55b, arranged parallel to the rows of panels 3 and at a distance from the lower ends 45a and 45b of the junction system 45. The lateral ends of two panels 3 rest respectively on the one and the other of these two portions 55a, 55b and an adhesive sealing tape is preferably used to connect these two panels 3, at least on the side of their face opposite the plates 48, 49. This adhesive tape or similar tape ensures airtightness. The layer of PIV type panels 3 may also have, between each pair of adjacent panels 3, sealing elements forming a barrier to air flow through the layer.

It is also possible to use a junction system 45 in a different form (half-piece shorter in height) when approaching the floor 60 for the bottom row, the plate 55 then being located at the lower end 45a. Similarly, the tray 55 may be located at the upper end when approaching the ceiling 70, for the highest row. An example of a hooking function of the support section 10 section U or H will now be described with reference to Figures 2 and 3.

The front branch 10b of the support profile 10 defines a front transverse face 13b on which is provided a hooking device such as an anchoring rail 15 which is typically continuous and elongated in the direction of the longitudinal axis A. The Support profile 10 may be connected to the profiles 5 or similar structural framing members by use of the spacer devices 20 which are fixed on the attachment device by their rear axial end 20a. In the example shown, the attachment device comprises a base which defines means for fixing and guiding the spacer device 20. The fixing and guiding function is permitted here by an anchoring rail 15 formed here by a slide provided with two parallel tabs 15a, 15b or two walls with a similar function.

It can be seen in Figure 2 that these two tabs 15a, 15b protrude forwardly from the front transverse face 13b which is flat. A slot 16 or groove clearly visible in Figure 3 is defined between its two parallel tabs 15a, 15b and opens out towards the front. This slot 16 may be narrower than the groove or grooves 14a, 14b. The slot 16 thus defined makes it possible to house all or part of a male connection element 21 of the bracing device 20 and to slide the bracing device 20 parallel to the longitudinal axis A of the support profile 10.

As clearly visible in FIGS. 2 and 3, the attachment device, here in the form of the anchoring rail 15, extends the H-section support profile 10 in the direction of the shortest dimension of the three dimensions of the This shorter dimension is, for example, less than the axial length of the spacer element 30. With panels 3 of the PIV type, it is possible to limit the distance (defined by the intermediate portion 10c). between the rear face 13a of support and the attachment device. The bracing element 30 must, however, typically be longer than this distance, in order to prevent the risk of piercing a sealed barrier envelope 3b of the panel layer 3. Moreover, FIGS. 1 to 3 are very clearly seen. that the free ends of the branches 10a and 10b each define an outer edge without asperity. The free end or ends of the front branch 10b are preferably spaced apart from the bracing device 20. The branches 10a and 10b can be spaced a distance which is constant from the free ends to the junction, here at right angles, with the intermediate portion 10c.

In an alternative embodiment for sliding the device brace 20, the support profile 10 may have a single base formed on the front transverse face 13b which replaces the anchor rail 15, the single base may be a simple tongue without horizontal groove or similar slot. In this case, the rear axial end 20a may have a clamping function, for example with a jaw or a clamping rail coming to engage the base. Although the illustrated embodiments show a single base such as an anchoring rail 15, it should be understood that the fixing and guiding means can be defined by a plurality of similar bases spaced and aligned in a direction parallel to the longitudinal axis A. The lateral sliding stroke of the bracing devices 20 is in this case limited to a length less than that of the support profiles 10 but which may be considered sufficient to adjust the lateral spacing between the bracing devices 20 (and therefore the spacing e1 between the profiles 5 attached thereto). Such spaced bases are for example formed integrally on the rear transverse face 13b of the same support section 10.

Again with reference to the example shown in Figures 2 and 3, we can see that the tabs 15a, 15b extend parallel on either side of a plane P10 including the intermediate portion 10c plane. Thus, the anchoring rail 15 is equidistant from the edges of the support profile 10 which delimit the grooves 14a and 14b. This position makes it possible to minimize the width extension of the branch before 10b, this extension possibly being reduced to a minimum. In this example, the width extension of the front branch 10b is only about 20 mm (and more generally between 10 and 30mm), knowing that the spacing between the tabs 15a and 15b may be less than or equal to 5 mm .

As shown in FIGS. 3, 4B and 5, the male connection element 21 is part of a fastening head, provided at the rear axial end 20a, or more generally of a fastener 22 of the device of FIG. bracing 20. This fastener 22 may comprise a flange 22a and be provided with at least one surface S1, S2 abutting on at least one front surface facing the support profile 10, as can be seen in FIG. Here, these surfaces S1, S2 are defined by the free edges of two parallel flanks T1, T2 which project from a substantially flat surface of the flange 22a. The front surface is preferably flat and defined by the front transverse face 13b. The male connection element 21 extends parallel between the two sides T1 and T2 projecting from the flange 22a and ends with a detent pin 23 which can be inserted between the tabs 15a, 15b. The male connection member 21 has a sectional transition (with a sectional narrowing) at the rear of this snap-on tip 23, so that two opposite lugs 21a, 21b are formed transversely to the direction of rotation. snap. The male connector member 21 may optionally have a general tab shape as wide as the flange 22a and have a snap-on tip 23 having a triangular or other sectional enlarged section. In this case, respective grooves G1, G2 of constant width may be formed between the lugs 21a, 21b and the flange 22a, as shown in FIG. 5, inside the slot 16.

To achieve a retention of the male connection element 21, the tabs

15a, 15b have at least one projecting projection inwardly of the slot 16, here two projections 24, 25 vis-à-vis. The two tabs 15a, 15b are resilient and have a radial clearance. It is understood in the illustrated example that it was first inserted and engaged the fastener 22 in the slot 16 by pushing the two tabs 15a-15b. The bracing device 20 is thus brought closer together and engaged (by insertion in the anchor rail 15) against the support profile 10 in a translational movement substantially perpendicular to the front transverse face 10b of the support profile 10. chamfered surfaces of the ratchet tip 23 form first guide elements for insertion. The passage of the latching point 23 with contact between the two projections 24 and 25 has the effect of slightly widening the slot 16 due to the elastic deformation of the tabs 15a-15b, while the end of the displacement makes it possible to position the pins 21a, 21b between the front transverse face 10b and the two projections 24, 25. The displacement in the detent direction (corresponding to the arrow B in FIG. 3) is then immediately stopped because of the abutment of the surfaces. S1, S2 against the front transverse face 13b of the support profile 10. It is also understood that the tabs 15a, 15b are tightened by return to their initial parallel configuration. In the abutting engagement position of the surfaces S1, S2 which prevents any displacement towards the wall P1, the projections 24 and 25 are then placed in the grooves G1, G2 and engaged respectively on the lugs 21a, 21b (here with axial abutment effect) so as to prevent any displacement in the opposite direction.

Optionally, the areas of contact with the support profile 10 respectively defined by the front surfaces S1, S2 of the flanks T1, T2 and the lugs 21a, 21b are of comparable or identical extent (for example extended over 4 mm, and preferably more than 10 mm in the direction of the longitudinal axis), so that the relative rotational movement of the fastener 22 relative to the support profile 10 about an axis perpendicular to the detent direction is prevented. The two blanks T1, T2 extend externally to the slot 16 and along the tabs 15a, 15b, leaving a small clearance (or no play), so that it is also not allowed to rotate the fixing member 22 about the longitudinal axis of the spacer device 20 in the latching configuration shown in FIGS. 2 and 3.

The particular example of latching described above is not limiting, knowing that the anchoring rail 15 or the similar fastening means may alternatively have a male member fitting into a groove of the fastener 22 When at least one anchoring rail 15 is used to obtain a sliding degree of freedom, it is preferable that the fixing member 22 has at least one second guiding element for insertion, such as one of the flanks T1, T2, which protrudes in an axial direction of the spacer device 20 and whose format can be plate-shaped. Such a second guide element is for example elongated parallel to the support profile 10 in the mounted state and / or several guide elements are distributed in the same plane perpendicular to the elongation direction of the support profile 10. Moreover, it is understood that the fastener 22 can be provided without the flanks T1, T2, for example in an alternative embodiment in which these two flanks are formed on the support profile 10 (with the same positioning as illustrated in FIG. 3 ), the surfaces S1, S2 being then defined at a contact zone of the flange 22 with such flanks).

The fastening means for the connection between a spacer device 20 and the support profile 10 may optionally comprise an insert (not shown), for example a clip or a clip-on rail, which can catch on the edges of the branch. before 10b. In this case the support profile 10 is an assembly of several parts including the snap-on rail. The base part of the snap-on rail extends parallel to the front branch 10b and may have, for example, one or more orifices making it possible to connect, by a tight fitting, a fixing member 22 formed at the rear end 20a of the bracing device.

20. The fixing member 22 and the corresponding orifice may then have a section which differs from the circular shape to oppose relative rotation of the spacer device 20 with respect to the support device 10.

With reference to FIGS. 3, 4B and 5, the bracing element 30 is made in one piece, for example obtained by molding a plastics material (polyamide or PVC for example), and includes the fixing member 22. The spacer member 30 comprises a rod portion 28 which extends longitudinally along a first axis XX 'and axially joins the flange 22a or similar portion of the Fixing member 22. The outer surface of the rod portion 28 is serrated over most of its length. In this nonlimiting embodiment, the rod portion 28 comprises rows of notches 28a, 28b separated by grooves 29. Here, two diametrically opposed rectilinear grooves 29 extend longitudinally along the axis XX 'from the flange 22a to 1 to a tip, a tip or a free end 30a of the spacer element 30. The rows of notches 28a, 28b are formed on two diametrically opposite angular fractions.

At least the rod portion 28 is made of a plastic material breakable by a cutting plier. Thus, its length can be adapted to the desired distance D2 between the panel layer 3 and the outer face 8.

When the spacer device 20 is fixed to the support profile 10, the axis XX 'is preferably maintained in a direction substantially perpendicular to the panel layer 3. The spacer element 30 is locked in rotation and can optionally only slide along the support profile 10 when the attachment device is in the form of an anchoring rail 15, a system with multiple slots or similar means of fixing and guiding.

Referring to Figures 1 to 5, the holding member 40 is a third piece (separate from the support profile 10 and the spacer element 30) belonging to the mounting and mounting kit for the installation of the system 1 wall doubling. The holding member 40 may be plastic (for example polyamide or PVC) or possibly metallic. The holding member 40 is rotatable about the shank portion 28 of the brace member 30 between an unblocked position and a locked position. For this, the holding member 40 comprises a through hole 41 defined by a conduit 40a, here central, provided with notches 41a, 41b on its tubular inner surface to engage the rod portion 28 of the spacer element 30. The notches 41a, 41b are distributed in two diametrically opposite zones separated by bore zones 41c, as can be seen in FIG. 4A. These boring zones 41c are distributed here according to two angular fractions corresponding to at least the two angular fractions forming the rows of notches 28a, 28b of the spacer member 30. In the unlocked position between the spacer member 30 and the holding member 40, it is understood that the bracing devices 20 have an adjustable length. It can be seen, in particular in Figures 4B and 5, that the conduit 40a of the holding member 40 extends tubularly about a longitudinal axis Y-Y '. The holding member 40 has two side walls 40b, 40c extending parallel to this longitudinal axis YY 'and an access face 42 to the duct 40a extending transversely between the two side walls 40b, 40c. The conduit 40a thus opens on one side through the access face 42, between the two side walls 40b, 40c. When the axes XX 'and YY' are substantially merged and in a first relative angular position as illustrated in Figure 5, the conduit 40a and the spacer element 30 can slide into one another.

In a second relative angular position, visible in FIGS. 2-3, 4B and 7, the spacer element 30 and the duct 40a engage between them the notched external surface and the notched inner surface to obtain the locked relation of the holding member 40 on the spacer member 30. The holding member 40 may include a lever L to actuate the transition from the unlocked position to the locked position and vice versa by rotation. The lever L is here unique and has an actuating portion 40d which extends axially from a radial extension arm 43 which may be substantially planar.

Although the examples of FIGS. 1 to 6 show a bracing element 30 with a single rod portion 28, any type of insertion member may be used to cooperate with a duct 40a of the holding element 40. Moreover, as shown in FIG. 7, the duct 40a with the internal toothed surface may alternatively be provided in a pivot 44 engaged on the anchoring rail 15 or on a similar attachment device of the support profile 10. The rod portion 28 can in this case be designed in the same way with two rows of notches 28a, 28b and it is understood that the spacer element 30 can be directly connected to the profile 5 of the secondary frame 4.

Referring to Figure 6, the section 5 here has a U-shaped section delimited by two branches 501, 502 and a bottom portion 51 connecting the two branches 501, 502. Return wings 5a, 5b parallel to the bottom portion 51 are also provided, so that the profile 5 forms a fur. The groove 500 of the profile 5 is thus adapted to accommodate an insertion portion of a holding member 40.

A first example of attachment of the holding member 40 to the profile 5 will now be described with reference to Figures 2 to 5.

The holding element 40 may have a planar base 400 including the access face 42 of the conduit 40a and which extends perpendicularly to the side walls 40b, 40c. The flat base 400 has two parallel opposite edges 401, 402. The side walls 40b, 40c define a width L4 of the holding member 40 which corresponds to the distance between the edges 401, 402. It is provided in this holding element 40 an insertion section 46 which has a depth less than that of the groove 500 of the section 5 and can be inserted in the latter. The width L4 is smaller than the width of the groove 500 and here less than or equal to the distance L5 between the edges of the return flanges 5a, 5b, so that a relative sliding movement of the insertion section 46 in the groove 500 is allowed when the side walls 40b, 40c are positioned in the direction of the length of the profiles 5.

With respect to the duct 40a, the side walls 40b, 40c are shifted as shown in FIG. 3 and 4A and the flat base 400 may then optionally have two complementary angles A1, A2, one of which is greater than 100 ° (for example from order of 120 °) and the other is less than 80 ° (for example of the order of 60 °). A pair of opposed slots 61 are provided in the side wall 40b which is on the obtuse angle side A1 and a pair of opposite slots 62 is similarly provided in the side wall 40c which is on the acute angle side A2. . In this example the slots 61, 62 open on the opposite sides of these side walls 40b, 40c, that is to say on a periphery of the holding element 40.

With this type of arrangement, the insertion section 46 which has a periphery of parallelepipedal shape (neither rectangle nor circular) can pivot in the groove 500 of an angle less than 90 ° (less than a quarter of a turn) between an initial position allowing sliding in the section 5 and a setting position on the return wings 5a, 5b at the slots 61, 62 of the periphery. FIG. 2 illustrates the state of engagement of the holding element 40 in the section 5, with simultaneous locking of the spacer element 30.

With reference to FIG. 4A, the directions Z1 and Z2 respectively tangent to the bottom of the grooves 61, 62 and which correspond to the position taken by the edge of the return wings 5a and 5b in the locking position can be seen. These directions Z1, Z2 are parallel with a spacing corresponding to the distance L5 between the return wings 5a, 5b (distance L5 which is therefore greater here than the distance

L6 between the bottom of the slots 61 or between the bottom of the slots 62 in the example shown). The direction Z2 is distant from the lever L, with here a spacing e5 much greater than the width of the corresponding return wing 5b. This arrangement makes it possible to block the sliding of the holding element 40 in the groove 500 only with contact of the return wings 5a, 5b in the slots 61, 62. In other words, with here a pivoting at an angle less than 90 °, the rotation is stopped without abutment of the lever L against one side of the profile 5. As a result, the actuating portion 40d of the lever L may have an ergonomic gripping shape, for example with a concave curvature outwardly on a front face F4 (as shown in Figures 4B and 5) which facilitates the decision between the thumb and the index finger. When the holding member 40 is to be rotated, the index of the operator can thus press on the rear face F6 of the actuating portion 40d while the thumb bears on the front face F4.

The lever L having no surface engaged with the profile 5, it is understood that the lever L can be designed with a small thickness which minimizes the amount of material in the holding element 4. It will be noted that the portion d The actuation 40d is in a position close to the profile 5 in the unlocked position as shown in FIG. 3 and in a position remote from this profile 5 in the locking position 5 (as illustrated by the spacing e5 in FIG. 4A).

With reference to FIG. 5, the two slots 61 and the two slots 62 extend perpendicularly to the axis YY 'and define a transition plane delimiting on one side the insertion section 46 which enters the groove 500 and on the other hand the outer portion 47 of the holding member 40 which includes the flat base 42. Of course the lever L which is accessible to a user is connected to the outer portion 47. Each of the slots 61 and 62 is delimited by :

a first surface 60a lateral generally parallel to the direction of sliding in the section 5, this first surface 60a forming part of the insertion section 46;

a bottom surface 60; and

a second lateral surface 60b defining a straight slope from the bottom surface to an outward opening, this second surface 60b forming part of the outer part 47.

In the mounting position as illustrated in Figure 3, the actuating portion 40d of the lever L protrudes perpendicular to the wall P 1 from the extension arm 43. The axes XX 'and YY' of the spacer element 30 and the conduit 40a of the holding member 40 are then aligned. To achieve the fixation of the secondary frame 4, successively provides:

optionally adjust the spacing (for example 50 or 60 cm) between the spacer devices 20, by sliding the spacer member 30 already connected to the anchor rail 15;

to slidably adjust the position of the holding element 40, for example in sliding the profiled assembly - holding element 5, 40 on the rod portion 28 (which is convenient for adjusting the verticality of the section 5);

- To lock this position by rotation of the holding member 40, here by grasping the actuating portion 40d, by engaging the side walls 40b, 40c (at the slots 61, 62) against the wings of return 5a 5b of the profile 5, the rotation being less than 90 °.

It may be noted that the rotation of the lever L makes it possible to rotate the holding member 40 in its entirety, in a rotation at a time with respect to the spacer element 30 (connected to the anchoring raid 15 ) and the fur forming profile 5, in which it engages. Turning the conduit 40a of the holding member 40 causes the engagement of the notches 41a, 41b in the rows of notches 28a, 28b of the spacer element 30, so that the desired position for the section 5 is effectively locked. If there has been prior blocking of the translation of the holding member 40 on the spacer member 30, the unlocking of this translation is obtained by a simple rotation of the first on the second along an axis perpendicular to the wall P1.

This type of adjustment and locking is practical to adapt to the dimensional constraints of the particular context. Prior to this blocking, one or more profiles 5 may optionally be nested in a bottom rail 6 and a top rail 7 and the linearity may be adjusted by adjusting the position and the length of the respective bracing devices 20. It is understood that the blocking can be achieved in this case successively by tilting the levers L in a few quickly chained gestures.

A second example of attachment of the holding element 40 to the profile 5 will now be described with reference to FIG.

In the mounting situation illustrated here, only the bracing member 30 is fixed by being already connected to the support profile 10 by fastening means such as the anchor rail 15. The holding member 40 is on the other hand removable. The notable difference from the previous example is the use of a holding member 40 which has an outer groove 63 continuous on its lateral periphery.

In this case, the profile 5 has a clip function with the return wings 5a, 5b which engage in the outer groove 63. The length adjustment of the spacer device 20 is then achieved by turning the portion of actuating 40e of the holding member 40. This actuating portion 40c has a gripping surface which extends entirely about the longitudinal axis YY ', being here symmetrical, which makes it as practical for a right-handed operator as left-handed.

With a rod 28 with external toothed surface as in the previous example, the insertion movement in the duct 40a is easy and a rotation of about a quarter turn allows the blocking between these two parts. In the case of a rod portion 28 threaded in conventional manner, the adjustment can be made by rotating the actuating portion 40e to the desired insertion level of the rod 28 threaded in the conduit 40a which is then also provided with a thread. Moreover, the arrows shown in FIG. 6 illustrate the degree of freedom in translation allowed by the slot 16 of the anchor rail 15 or similar slot (s) of the fastening device formed on the support profile 10.

The insertion section 46 is here inserted in the groove 500 of the profile and in close contact against the return wings 5a, 5b, with a possibility of sliding (with friction) in the groove 500. The conduit 40a can be plugged which prevents contact of the rod portion 28 with the bottom portion 51 of the profile 5.

An alternative embodiment of a mounting and fixing kit will now be described with reference to FIG. 7.

The support profile 10 here comprises an anchoring rail 15 whose tabs 15a, 15b are elastically deformable and perform a retaining function identically or similar to the return wings of a fur. The kit comprises a fastener 22, which preferably contains a single piece 44 forming a pivot. The fixing member 22 engages directly in the anchoring rail 15. In the mounting situation illustrated in FIG. 7, it is the spacer member 30 which is removable while the fixing member 22 is fixed in translation along an axis perpendicular to the wall P1 (no sliding along its longitudinal axis).

The fastener 22 may laterally have on its periphery an annular groove 64 or 65 similarly to the groove 63 of the holding member 40 shown in FIG. 6. The male portion of the fastener 22 enters the slot 16 and engages in the manner of a clip. In a variant, it may be provided to double the grooves with an axial offset. In the latter case it is understood that such a connecting element can be used to adjust the spacing distance in depth D2 between the outer face 8 and the front face F1 of the panel layer 3, according to which the tabs are positioned. 15a, 15b of the support profile 10 in the foremost grooves 65 or in the grooves 64 further back. In addition, and particularly when the free space E between the outer face 8 and the front face F1 of the panel layer 3 must be large, the fastener 22 can have a tubular body similar to the conduit 40a of the holding member 40 previously described, with notches or a thread on the side of its inner face to be locked or screwed on the rod portion 28 of the spacer element 30. It is understood that the fastener 22 here defines the rear axial end 20a of the spacer device 20.

Referring again to Figure 7, the rod portion 28 extends here from a wider holding member 40 which is fixed in the groove 500 of the fur section 5. A groove 63, here annular, of the holding member 40 allows snapping on the return flanges of the profile 5. It is understood that the holding member 40 here defines the forward axial end 20b of the spacer device 20 and is part of the spacer element 30 which is monolithic. The latter is preferably made of injected thermoplastic which has a very good rigidity.

After possible sliding in the anchoring rail 15 of the fastener 22, the relative position of the spacer member 30 relative to the fastener 22 can be adjusted in translation, in the same manner as previously described. The use of rectilinear grooves 29 is advantageous for achieving a translation without any mechanical connection. The locking is provided here by the rotation of the fastener 22, by gripping the gripping portion 72 thereof. This gripping portion 72 is for example widened relative to the insertable portion housed in the slot 16 and located on the side of the rear end of the fastener. Alternatively, a lever may be provided to actuate the rotation of this fastener 22.

In another variant (not shown), the fixing member 22 is formed of a non-rotating part, being only telescopically movable to move along the axis XX 'of the spacer element 30. In in this case, the length adjustment of the spacer device 20 can be achieved by a pin or by a notching system (rack type) blocking by default the relative displacement between the fastener 22 and the spacer element 30.

Whatever the type of operation to block the position of the spacer member 30 after its lateral adjustment and / or depth, it is understood that the profiles 5 can be mounted quickly and positioned with easy adjustment. Finally, it remains to fix the outer face 8, typically consisting of at least one plate, parallel and remote from the panel layer 3, preferably directly on the profiles 5 by a fastening method known per se. The thermal insulation system 1 is therefore well suited for wall covering existing walls, typically to form an interior insulation in a building (between a floor 60 and a ceiling 70).

One of the advantages of the thermal insulation system 1 is to minimize the assembly time through the use of a primary frame 2 which facilitates the installation of PIV type panels 3 while allowing an effective adjustment of the distance between centers. spacing devices 20 and / or distance D1 between the panel layer 3 and the profiles 5 of the secondary framework 4.

It should be obvious to those skilled in the art that the present invention allows embodiments in many other specific forms without departing from the scope of the invention as claimed.

Thus, although the intermediate portion 10c has been described in all the above as being planar and forming part of an H-shaped section, by defining a median plane P10 of symmetry of the support profile 10, it must be understood that of Other formats of the support profiles 10 are also suitable, since there is provided a groove 14a for carrying out the support function of at least one row of insulating panels 3 and at least one base to allow the fixing and support of the devices. 20. Also, it can be provided to use support profiles 10 having a U-section (but otherwise completely similar to the H-section support profiles described above) to respectively support the rows R1, R2 by the low. In this case, a bonding of the upper edge of the panels 3 on the underside of the intermediate portion 10c can be realized directly or indirectly (for example via a very thin additional layer for example which covers the panel 3 of the PIV type).

Claims

1. Kit for mounting and fixing structural framing members for the lining with an external cladding (8) of a wall (P1) of a building, adapted for the integration of insulating panels (3) distributed in at least a panel layer with rows (R1, R2) of panels parallel to the outer facing (8), the fixing kit comprising:

a support profile (10) having an H section with an intermediate portion (10c) adapted to be interposed between two rows of insulating panels (3), the support profile comprising a bearing face (13a) adapted to be fixed against the wall (P1);

a plurality of bracing devices (20) each extending between a first axial end (20a) in contact with the support profile (10) and a second axial end (20b) intended to be in contact with one of the elements structural framing (5);

characterized in that the support profile (10) comprises a hooking device located opposite the support face and in that the bracing devices (20) which are preferably non-metallic each comprise:

- a fixing member (22) arranged in the first axial end (20a) and adapted to be fixed on the attachment device;

- a holding member (40) arranged in the second axial end (20b) and for maintaining one of the structural frame members (5); and

a spacer element (30) secured to one (22; 40) of the fastener member and the holding member and adapted to enter into a locked relation of the other (40; 22) of the fastening member and the holding member on the spacer member (30).

2. Kit according to claim 1, wherein the support profile (10) is made in one piece, preferably in plastic, the support profile having a thermal conductivity of less than 0.6 W m ^"1 K ^{" 1} at less at said intermediate portion (10c).

3. Kit according to claim 1 or 2, wherein the attachment device comprises a slide provided with two parallel tabs (15a, 15b) defining between them a slot (16), the two tabs having at least one projection towards the inside the slot, and preferably two projections (24, 25) vis-à-vis, for clipping said fastener (22), thanks to which the slide forms a rail anchor (15).

Kit according to claim 3, wherein the spacer element (30) comprises a rod portion (28) extending longitudinally along a first axis (Χ-Χ '), the fastening member (22) ) being made in one piece with the spacer element in the axial extension of the rod portion.

Kit according to claim 4, wherein the fixing member (22) comprises:

- two parallel flanks (T1, T2); and

- a male connection element (21) extending between the two parallel flanks (T1, T2) and is adapted to engage the support profile (10) between the two tabs (15a, 15b);

and wherein the two parallel flanks (T1, T2) are adapted to engage the support profile (10), outside the slot (16), and lock the spacer member (30) in rotation so that said first axis (Χ-Χ ') is maintained in a direction substantially perpendicular to the bearing face (13a) of the support profile.

6. Kit according to any one of the preceding claims, wherein the bracing member (30) is integral with the fastener (22), the holding member (40) being rotatable about the l spacer element between an unlocked position and a locked position.

Kit according to claim 6, wherein the holding element (40) is formed in one piece which comprises:

a passage orifice (41) for the spacer element (30);

- slots (61, 62) opening outwardly in a periphery of the holding member and adapted to engage a fur; and

- A lever (L) adapted to actuate the transition from the unlocked position to the locked position and vice versa by rotation.

Kit according to claim 6 or 7, wherein the bracing devices (20) have an adjustable length in said unlocked position.

Kit according to any one of claims 6 to 8, in which:

- The bracing member (30) comprises a rod portion (28) having a notched outer surface, the rod portion (28) extending longitudinally along a first axis (Χ-Χ '); and

the holding element (40) comprises a duct (40a), defining said orifice (41), which extends tubularly about a second axis (Υ-Υ '), said duct (40a) comprising a notched interior surface;

the conduit (40a) and the spacer element (30) being arranged, when the first axis (Χ-Χ ') is substantially coincidental with the second axis (Υ-Υ'), for, in a first relative angular position , slide one into the other and, in a second relative angular position, engage the toothed outer surface and the notched inner surface between them to obtain the locked relationship of the holding element (40) on the element d bracing (30).

10. A method of doubling a wall (P1) of a building comprising:

the fixing on the wall (P1), directly or indirectly, of at least one support profile (10) having an H-shaped section with an intermediate portion (10c) which is preferably flat, by using a face of support (13a) of the support profile extending transversely to the intermediate portion (10c);

- The laying of insulating panels (3) to form a panel layer having rows of panels, a lower row (R1) is in contact from below with the intermediate portion of the support profile and an upper row (R2) is in contact from above with the intermediate portion of the support profile; characterized in that the method comprises the steps consisting essentially of:

- Fixing on a fastening device which is part of said support profile (10), opposite the bearing face (13a), at least one spacer element (30);

- engaging on each of the bracing members (30) a holding member (40) of a bearing lining of an outer facing, in a directional translation substantially perpendicular to the wall (P1), the element of holding and the associated bracing member forming part of a bracing device (20);

- bringing a fur into contact with the holding element (40) of the spacer device (20) and blocking the translational movement of the holding element (40) on the spacer element (30) in said bracing device (20).

1 1. A method according to claim 10, wherein the fixing of the spacer element (30) to said hooking device is carried out on a rail (15) which forms part of the support profile (10) with a degree of freedom in translation along the rail (15);

and wherein the position of the fur is adjusted by moving said brace (20) along the rail (15).

The method of claim 10 or 11, wherein the insulating panels (3) of said panel layer are each plate-shaped and are contiguously arranged in a same row (R1, R2), each of the panels comprising a porous material (3a) resistant to compression and a gastight barrier envelope (3b) for maintaining an internal vacuum and which encloses the porous material.

13. System for doubling a wall (P1) of a building, comprising:

insulating panels (3), preferably each having a plate-like shape with corners (3c) and comprising a porous material (3a) resistant to compression and a gas-tight barrier envelope (3b) for maintaining an internal void and which encloses the porous material, the panels being distributed in at least one layer of panels with rows of panels (R1, R2);

- an outer face (8);

- A so-called secondary frame (4) comprising structural frame members (5) and forming a support for the outer facing (8);

a so-called primary framework (2) comprising at least one profile (10, 1 1, 12) for fixing the panels (3) in said layer, so that said layer has a front face (F1) facing each other of the secondary framework (4) and a rear face (F2) opposite to the front face, said primary framework (2) comprising at least one support profile (10) having an H section with an intermediate portion (10c) adapted for interposing between two rows (R1, R2) of insulating panels (3), the support profile (10) having, transversely to the intermediate portion (10c), a bearing face (13a) adapted to be fixed against the wall (P1);

characterized in that it further comprises:

- An anchor rail (15) forming part of the profile of the support (10), located opposite the bearing face (13a);

- bracing devices (20) adapted to maintain a spacing (D1) between the outer facing (8) and said front face (F1), the bracing devices (20) which are preferably non-metallic each comprising:

- a fastener (22) adapted to be fixed in the anchor rail (15), preferably with a mobility in translation along said rail;

- a holding member (40) for maintaining the secondary frame (4); and

a spacer element (30) secured to one (22; 40) of the fastener member and the holding member and adapted to enter into a locked relation of the other (40; 22) of the fastener and holding member on the element bracing (30).

14. System according to claim 13, wherein the secondary frame (4) comprises furs connected, directly or indirectly, to at least one substrate of the building, the furs extending away from the layer of insulating panels (3). .

15. The system of claim 13 or 14, wherein the support profile (10) has, at least at the intermediate portion (10c) a thermal conductivity less than 0.6 W m ^"1 K ^{" 1} .