ES2693998T3 - Membrane sealing system - Google Patents

Abstract

Sealing system (100, 200, 300) prepared to seal the periphery of the threading opening (4a) of a membrane (4) threaded on a length of rod (11) extending in an axial direction (X ) and provided in its periphery with a plurality of primary ribs (12), said sealing system including at least one first clamp (120, 220, 320) ready to be fitted on said rod section (11) through an opening (121, 221, 321), and locking means of said jaw in contact with said membrane, the sealing system being characterized in that the edge (122, 222, 322) of the fitting opening is prepared to adapt to the shape of the mentioned section of the verilla (11).

Description

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DESCRIPTION

Sealing system for membrane Technical field

The present exhibition refers to the isolation of walls, especially the isolation of peripheral walls inside a building.

The present disclosure relates in particular to the unfolding of a wall of a building, and in a manner more specific to the installation in this frame of a membrane, especially of the air-tight membrane type and possibly of water vapor management.

BACKGROUND OF THE INVENTION

For some years now, every new building or any new part of an existing building must respond to low energy consumption requirements.

Good thermal insulation and good air and water vapor tightness are parameters that allow these requirements to be met.

The air tightness of a building characterizes its sensitivity to leaks or parasitic air leaks that pass through the building envelope. These air leaks are synonymous with waste calcium and a decrease in the effectiveness of thermal insulation. Today, air tightness must be measured at the end of the work.

The unfolding of a wall such as a wall is frequently practiced, in a renovation or in a new construction, in order to improve the thermal insulation of the building. A splitting face is added on a splitting skeleton which is in turn fixed to elements of the structure of the wall to be unfolded, at a given distance from it. An insulation filler, which includes, for example, one or several layers of insulating material, as well as an air-tightness membrane, is inserted between the wall to be unfolded and the splitting wall.

The sealing membrane can optionally have a para-steam function. According to its permeability, it limits or prevents the displacement of water vapor through the assembly formed by the wall and the dividing partition. The membrane can then have hydro-regulatory properties. We are talking about a "smart vapor retarder" membrane for steam whose permeability to water vapor varies depending on the humidity of the air.

The fixation of the dividing skeleton to the elements of the structure of the wall to be unfolded is carried out by means of regularly spaced fastening accessories. Each fastening attachment typically includes a main body in the form of a rod extending transversely to the wall to be unfolded and to the wall, the end of which is provided with means for its cantilever attachment to an element of the structure of the wall to be unfolded and whose other end supports means for its assembly with the skeleton / splitting structure. Such an attachment attachment is already known from WO2006 / 061538.

During the installation, the insulation filler is threaded into the rods of the fastening accessories, which causes a multiple perforation of the layers of the fibrous material and eventually the membrane. This perforation is particularly detrimental in regard to the membranes, as their function of air tightness and eventually their hygrometric management is then altered. The perforation of the membrane can also constitute a tearing principle of such a nature that it can spread if a tension is exerted on the membrane.

To partially avoid this problem, it is already known to arrange the membrane on the inner side of the splitting structure, between the latter and the splitting face. The membrane is not so traversed by the attachment and can remain mégra, at the same time in a few times.

This solution is not, however, nothing more than partial. The fixation of the facing on the splitting structure implies the perforation of the membrane by the fixing elements (staples, screws, nails, etc.), which harms, even if only to a small extent, the sealing of the membrane.

The positioning of the membrane in front of the splitting structure poses another technical problem: it does not allow any interstitial space to remain between the membrane and the wall. However, it is found that very often it is necessary to insert, behind the splitting face, different cables or pipes, especially the water, ventilation, electricity or communication network. It is difficult then to consider placing cables and wiring accessories between the membrane and the facing. The cables could not, in fact, be conveniently fixed anything more than thanks to openings made in the membrane. The membrane runs the risk in addition to being damaged or distended by the cables or the attachment or connection accessories.

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These cables can certainly be located behind the membrane. But then it is not possible to access them for maintenance or to match the evolution of the wiring installation without removing the membrane or making an opening. In addition, the wiring operations can, for reasons of logistic or evolving needs or technologies, intervene later in the unfolding of the wall, which also requires the removal or opening of the membrane by the intervening parties. they are not usually specialists in the unfolding of walls and in isolation.

Another type of sealing system is already known from document FR 3 022 935.

Object and summary of the invention

One of the objects of the present invention is to provide a system that allows to remedy the aforementioned drawbacks.

In particular, an object of the present invention is to provide a system that allows to ensure a good air tightness of a building, while maintaining a technical space, accessible without perforation of the membrane once installed.

This objective is achieved with a sealing system prepared to seal the periphery of the opening where a threaded membrane is threaded on a section of a rod that extends in an axial direction and provided on its periphery with a plurality of primary ribs, said sealing system including at least one first jaw prepared to be fitted on said section of the rod by a fitting opening, the edge of the fitting opening being adapted to adapt to the shape of said section of the rod, and means for interlocking said jaw in contact with said membrane.

The system according to the invention allows to restore the sealing of the membrane, lost due to its threading on the rod, thanks to a collaboration between the first clamp and the rod, on the one hand, and between the clamp and the membrane, on the other hand. The sealing is carried out, therefore, at two levels:

- the edge of the threaded opening of the first jaw is prepared to work closely with the section of the rod on which it is fitted to make a watertightness with the rod, in other words, to prevent air from passing and / or limit the passage of air through said lace opening, between the first jaw and the rod, and

an area of the first jaw, located around its fitting opening, is prepared to be locked in contact with an area of the membrane located around its threading opening.

When the edge of the snap opening of the first jaw is adapted to adapt to the shape of the rib section of the rod, the first jaw can be mounted in a sealed manner regardless of the entire length of the section of the rod.

Accordingly, it is possible, for example, to seal the accesses of the opening of a membrane between two layers of insulator.

It is also possible to mount two sealing systems according to the invention on one or more sections with ribs of the same rod, especially in the case of a splitting including several membranes, separated, for example, by an insulating layer.

The system according to the invention also allows to conserve a technical space between the membrane and the wall, for the passage of cables, ventilation ducts, fontanena. This technical space is accessible without perforations of the membrane once installed. Its dimensions can be adapted to the needs.

According to an example, the snap opening of the first clamp has a profile similar to that of the section of the verilla.

By a profile similar to the profile of the section of the rod, here is understood a profile identical to the profile of the section of the rod (the same shape and the same dimensions) or a homothety of said profile (same form but different dimensions).

The profile of the section of the rod is understood as the profile of at least a portion of said section considered according to its axial direction, which includes at least one primary rib formed in its periphery.

The profile of the fitting opening is the profile of said opening, seen in a direction corresponding to the axial direction of the rod once the clamp is mounted on the rod. There is the observation that, by profile of the opening, it is understood its initial shape, resulting directly from the manufacturing process of the jaw, and not its shape after assembly on the rod.

Generally, the axial direction of the rod corresponds to its simetna axis.

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According to an example, the edge of the fitting opening of the first jaw can be deformable to adapt to the profile of the section of the rod. According to an example, the fitting opening can be sub-dimensioned with respect to the profile of the rod, in such a way that the opening lengthens when working with the rod, during its fitting into it. According to another example, the fitting opening can be, on the contrary, oversized with respect to the profile of the rod. In this case, the first jaw is deformable and means can be used to deform said jaw and put the edges of its fitting opening in contact with the rod, once the jaw is fitted on the rod, in the manner of a press -tow.

In this case, it may be advantageous if the profile of the fitting opening corresponds to the profile of the section of the rod (for example, being a homothety of the profile of the section of the rod).

The primary ribs formed in the periphery of the rod section may be different from each other, and parallel to each other.

They can be perpendicular to the axial direction of the section of the rod, or form with said direction an angle different from 90 °.

The primary ribs can form, in particular, a thread.

According to one arrangement, the primary ribs of the rod section are truncated on at least one primary angular portion cut off from the rod. In this case, the edge of the fitting opening of the first jaw can be prepared to adapt to the edge of the said primary truncated ribs, in order to make the seal with the rod.

Next, in the present disclosure, the contact area of the first jaw is called the area of said jaw, located around its fitting opening, intended to be brought into contact with an area of the membrane located around its opening. skewered. According to a provision, this contact zone is continuous and closed on itself. Form, for example, a circle or an oval.

According to a particular arrangement, the first jaw can also include several contact areas, preferably all continuous and closed on themselves, and globally concentric, to realize several successive levels of sealing.

The means for interlocking the first clamp in contact with the membrane can be of different natures.

They may include, for example, adhesive media.

In this case, the first jaw is prepared to stick on the membrane. For example, the contact area of the first jaw with the membrane includes at least one pre-glued part, possibly protected by a film that can be removed. In this case, the sealing can be ensured, possibly, thanks to the only first clamp.

According to a particular arrangement, the sealing system may also include a second jaw prepared to be fitted over the section of the rod.

The second jaw is obviously intended to be mounted on the rod on the side of the membrane opposite the first jaw. The membrane is, in this way, located between two jaws.

The locking means may include means for locking the two jaws with respect to each other in a locking position in which the membrane is clamped between said jaws around its threading opening.

The locking means may include, especially latching means.

According to a variant, the locking means may include means for screwing one between the first and the second jaw on the other jaw.

The locking means may also include locking means in translation of the jaws on the rod, in the axial direction.

According to an example, the second jaw is prepared to be fitted over the section of the rod by a mounting opening and said jaw has at least one secondary rib projecting towards the inside of the mounting opening, the secondary rib being adapted for to cooperate with the primary nerves formed in the periphery of the section of the rod for the blocking in translation of said second clamp on the section of the rod.

According to an example, the at least one secondary rib of the second jaw is cut on at least one angular portion.

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The first jaw can also have means for cooperating with the primary ribs of the rod section for the locking in translation of said jaw with respect to the section of the rod, in the axial direction.

These means include, for example, at least one tongue protruding into the socket opening and prepared to deform elastically. During the engagement of the first jaw on the rod, the tongue deforms in cooperation with the peripheral edges of the primary ribs. It then elastically returns to its initial position, protruding from the periphery of the fitting opening towards the interior of said opening. In this position, it cooperates with at least one primary rib to block the translation of the first clamp on the rod, in the axial direction. Preferably, in this position, it is axially immobilized between two adjacent primary ribs of the rod section.

According to an example, the jaws are configured to axially clamp the membrane, around its threading opening, in the locking position.

As a variant or as a complement, the first and second jaws may include means prepared to collaborate to radially clamp the membrane around its threading opening.

A region for clamping the membrane between the first and second jaws is preferably a continuous area closed on itself.

According to a particular arrangement of the invention, the first and second jaws are configured to clamp the membrane on a first continuous and closed zone on itself, and on a second continuous and closed zone on itself, surrounding the first zone, in locked position .

According to an example, the second jaw has a rigidity greater than that of the first jaw. The first jaw is made, for example, with a thermoplastic elastomer, while the second jaw is made, for example, with a polyolefin (for example, polypropylene or polyethylene), whether or not it is loaded with glass fibers or with talc.

According to an example, the first, more flexible jaw can then be prepared to elastically deform against the second jaw, in locked position, ensuring elastic recovery of the first jaw against the membrane sealing around the threading opening.

The present disclosure also refers to a splitting assembly of a wall that includes:

- a sealing system as defined above, and

- a fastening element that includes a rod that includes in turn a free end of skew and at least one section with ribs provided on its periphery with a plurality of primary ribs, and means for fixing to the wall to be unfolded.

According to an example, the splitting assembly also includes a maintenance element of a splitting structure, ready to be mounted on the fastening element.

According to an example, the primary ribs of the rod section are truncated on at least one primary angular portion cut off from the rod.

According to an example, the sealing system includes a second jaw prepared to be fitted on the section of the rod, and the second jaw has at least one secondary rib prepared to cooperate with the primary ribs formed on the periphery of the section of the rod for the locking in translation of the said second jaw on the rod section and the at least one secondary rib of the second jaw is cut on at least one secondary angular portion cut off corresponding to the non-cut portion of the rod in such a way that the second jaw is free to slide along the length of the rod, in the axial direction, in at least one angular position around said section of the rod.

The present disclosure also relates to a splitting of a wall that includes:

- fastening elements fixed on the wall to be unfolded, said fastening elements each comprising a rod which in turn includes a free end of a skew and at least one section with ribs provided on its periphery with a plurality of primary ribs,

- at least one layer of thermal and / or acoustic insulator threaded onto the fastening elements,

- a membrane threaded into the fastening elements,

- on each clamping element, at least one first clamp fitted on the section of a rod with ribs of said clamping element, said first clamp being in a locked position in contact with the membrane, and the edge of the clamping opening being adapted fitting of each first jaw to the shape of said section of the rod,

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- on each fastening element, a maintenance element of a splitting structure.

In the present application, for example, a layer of thermal and / or acoustic insulation includes or is constituted by a succession of panels or panels of insulating material, especially of a fibrous material of animal origin or of vegetable or mineral wool.

A layer of thermal and / or acoustic insulation can also include or be constituted by a Wall Insulation Panel (also known as PIV panels) constituted in a manner known per se by a membranous covering that ensures gas tightness and by a panel nido of a porous material that has insulating properties, placed inside this envelope and maintained at the ford by means of this envelope. The porous panel, which is most often manufactured with a material such as silica fumee, precipitated silica, an airgel, perlite, glass fibers, gives the panel its shape and mechanical strength.

The splitting can also include a splitting structure, fixed on the maintenance element. A splitting structure typically includes an element of splitting structure, especially a profile (also called "lining"), and a facing plate, for example, a plasterboard.

According to an example, the split includes, in addition, on each fastening element, at least one second jaw fitted on the section of a rod with ribs of said fastening element, the first and second jaws being locked one with respect to the other. in an interlocking position in which the membrane is clamped between said jaws around its skewer opening.

The present exposition finally includes a method of unfolding a wall that includes:

a) the fixing on the wall of fastening elements each including a rod which in turn includes a free end of skew and at least one section with ribs provided on its periphery with a plurality of primary ribs,

- b) the threading on or interleaving between the fastening elements of at least one layer of thermal and / or acoustic insulation,

c) in this order or in reverse order, the striker of a membrane on the fastening elements, the fitting of a first clamp on the section with ribs of the rod of each fastening element, adapting the edge of the fitting opening of the fastening element. said first jaw to the shape of said section of the rod, and the interlocking of said first jaw in contact with the membrane,

d) the fitting on each fastening element of a maintenance element of a splitting structure, and

e) contacting a splitting structure with salt minus a maintenance element.

According to an example, the splitting method further includes, in step c), the engagement of a second jaw on the section of the blade with ribs of each fastening element, the locking of said first jaw against the membrane that includes the locking the two jaws one with respect to the other in an interlocking position in which the membrane is clamped between said jaws around its threading opening.

In this exhibition several modes or examples of realization are described. However, the features described in connection with any mode or example of embodiment, except for an opposite precision, may be applied to another mode or example of embodiment.

Brief description of the drawings

The invention will be well understood and its advantages will appear better, with the reading of the detailed description that follows, of several embodiments represented by way of non-limiting examples. The description refers to the attached drawings in which:

- Figure 1 is a cross-sectional view of a splitting of a wall using the sealing system according to a first embodiment of the present invention;

- Figure 2 is a sectional view according to II-II of figure 1;

- Figure 3 is a more detailed view of the sealing system of figure 1, in position locked on the rod of a fastening element (omitting the membrane between the two jaws for reasons of clarity);

- Figure 4 is an exploded view of figure 3;

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- Figure 5 is a perspective view of the rear face of the first jaw of the sealing system of Figure 3;

- Figure 6 illustrates a sealing system according to a second embodiment of the invention, in position locked on the rod of a fastening element (omitting the membrane between the two jaws for reasons of clarity);

- Figure 7 is a perspective view of the front face of the first jaw of the sealing system of Figure 6;

- Figure 8 is a perspective view of the rear face of the second jaw of the sealing system of Figure 6;

- Figures 9 and 10 illustrate the front and rear faces respectively of a sealing system according to a third embodiment of the invention;

- Figures 11 and 12 illustrate a variant embodiment of the first embodiment of Figures 1 to 5. Detailed description of some examples of embodiment

Figures 1 and 2 illustrate an interior insulation splitting 1 of a wall F of a building, especially a peripheral wall, by means of a sealing system according to the invention.

Splitting 1 typically includes:

- a plurality of fastening elements 2 fixed on the wall F by its rear end, and each one including a rod 10, provided with a section with ribs 11 and a free end of threading 10a at its front end,

- at least one layer of thermal and / or acoustic insulation 3 constituted for example by a succession of panels or panels of insulating material, in particular of a fibrous material of animal origin or of vegetable or mineral wool, or, according to another example, of a succession of PIV panels, strung on or interposed between the clamping elements 10,

- a sealing membrane 4 (with a function of air tightness and, optionally, vapor-tightness, especially hydro-adjustable) threaded onto the fastening elements 2, in front of the insulating layer 60, especially a polypropylene or polyamide membrane, example, of a thickness between 200 and 400 pm,

- maintenance elements 5 of a splitting structure 6, fixed to the front end of the fastening elements 2.

According to the invention, the splitting 1 also includes, on each fastening element 2, a sealing system (according to a first embodiment) 100 prepared to provide sealing at the periphery of the threading opening 4a of the membrane 4 threaded on the rod 10 of this fastening element 2.

In the remainder of the present disclosure, an axial direction is defined as a direction parallel to the axis X of the rod of a fastening element 2.

A radial direction is also defined as a direction orthogonal to the axial direction and passing through the X axis.

Finally, an axial plane is defined as a plane passing through the X axis, and a radial plane as a plane orthogonal to the X axis.

The terms before and after are used here below in relation to the axial direction X and the direction of assembly of the splitting 1. In this way, a front part of an element will be farthest from the wall to be unfolded P and more next to the wall of splitting that a rear part of the same element.

The rod 10 of a fastening element 2 is, for example, an injection molded part, made of polyamide.

Each fastening device 2 includes, at a first end 10b of the rod 10, called rear, means for its cantilever attachment to the wall F. Once the element 2 is fixed, its rod 10 extends generally orthogonal to the wall to unfold F.

These cantilevered fixing means to the wall include, for example, hooking means on a profile P previously fixed to the wall, especially by screwing. As illustrated in FIGS. 3 and 4, the fastening element can, for example, include a hook base 16 provided, on its periphery, with grooves 16a (with two parallel grooves) for receiving the curved arms of a profile P, usually in C.

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These means can, as an alternative or as a complement as in this case in the illustrated example, include at least one mounting plate 17 provided with at least one atomizing hole 17a for fixing the fastening element 2 to the wall F or to the profile P previously fixed on the wall F, by means of a screw.

The second end 10a of the rod 10, called the front end (its end furthest from the wall to be unfolded in assembled position), is configured to allow the clamping of the sealing membrane 4 and possibly the threading of the layer (s) insulator 3, and therefore presents a pointed ending.

As illustrated in FIGS. 3 and 4, the rod 10 includes at its periphery, on at least one section 11, a plurality of ribs 12 called primary ribs, regularly spaced apart from one another, parallel to each other, and orthogonal to the direction axial X.

In the particular example shown, the rod 10 (with its ribs) is exchanged in two diagonally opposed truncated primary angular portions 13a, 13b, with each truncated primary angular portion 13a, 13b extending over an angle strictly greater than 90 °, for example , but not in a limited way between 120 and 150 degrees. Between these primary truncated portions are defined non-truncated primary portions 14a, 14b of the rod.

Each rib thus includes two rib portions located respectively at the level of a non-truncated primary portion 14a, 14b, diametrically opposed, and symmetrical with respect to an axial plane of the clamping element.

Each of these rib portions 12a, 12b is presented in the form of a sector of a ring that includes, in radial section, a curved leading edge 15a, and two lateral edges 15b, 15c forming between them an angle strictly less than 90 °, for example, but in a non-limiting manner comprised between 30 and 60 degrees.

At least one stiffening rib may optionally be provided at the level of the truncated primary angular portions 13a, 13b of the rod 10. As illustrated in FIG. 3, the rod 10 includes, for example, a rib of stiffness 18 against each Angled primary angular portion 13a, 13b and a plurality of radial ribs 19 preferably spaced in a regular manner in the axial direction X, joining the portions of primary ribs 12a, 12b.

As illustrated in Figure 2, each maintenance element of a splitting structure 5 is prepared to be mounted on the rod 10, at its front end 10a. A maintenance element of the splitting structure 5 is advantageously (but not restrictively) of the type described in the patent application WO2006 / 061538. In this case, it includes a cavity 5a by which it is prepared to be mounted on the rod, said cavity being bored to cooperate with the primary ribs 12 of the rod section 11, for locking it in translation in the axial direction X. Typically , the maintenance element 5 of the splitting structure includes hooking means 5b to a profile of the splitting structure, especially in the form of notches prepared to receive the curved arms of the profile. For greater precision, we will refer to the text of the application cited above.

The splitting structure 6 typically includes profiles 6a prepared to be hooked on the maintenance elements 5, and plates of the facing 7 prepared to be screwed on said profiles 6a.

The sealing systems 100 of FIGS. 1 and 2 will now be described in more detail, referring to FIGS. 3 to 5.

As indicated above, the sealing system 100 is prepared to effect sealing at the periphery of the threading opening 4a of the membrane 4 threaded on the rod 10.

In the example, it includes a first jaw 120, which has a fitting opening 121 whose edge 122 is prepared to adapt to the profile of the section of the rod with ribs 11 and thus effect a sealing with the rod 10, a second jaw 130, and means for interlocking the first jaw 120 in contact with the membrane 4.

As illustrated in Figures 1 to 3 especially, the second jaw 130 is intended to be mounted on the rod 10 prior to threading the membrane 4, while the first jaw 120 is intended to be mounted on the rod 10 after being threaded of the membrane 4. In assembled position, the second jaw 130 is therefore located at the rear of the membrane 4, and the first jaw 120, at the front.

The two jaws are prepared to be locked on the rod in a relative locking position in which the membrane 4 is clamped between said jaws 120, 220 around its threading opening 4a.

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In the particular example shown, the jaws are configured to clamp the membrane in the axial direction at the level of a first contact zone, and in the radial direction, at the level of two other concentric contact zones.

The first and second jaws are described in more detail below.

In the example, the second jaw 130 is presented in the form of a relatively rigid plate, made, for example, of polypropylene (reinforced or not with glass fibers). The plate 130 has a central mounting opening 131, of generally circular section, for its assembly on the rod 10 (by the free end 10a thereof).

As will be described below, the plate 130 is ready to be mounted and locked on the rod according to a bayonet or "quarter turn" system.

As illustrated in Figure 4, an annular rib 132, hereinafter secondary rib, protrudes into the central mounting opening 131.

In the example, the secondary rib 132 is truncated on two angular sectors 133a, 133b, an angle greater than the angle of the primary portions not exchanged 13a, 13b of the rod, and diametrically opposed.

The plate 130 is thus free to slide along the length of the rod 11, in the axial direction X, when its portions of the secondary rib 132a, 132b are in front of the truncated portions of the rod 13a, 13b and when their truncated portions 133a, 133b are in front of the non-truncated portions 14a, 14b of the rod, supporting the rib portions 12a, 12b (unblocked position of the platen).

On the contrary, the plate 130 is blocked in translation in the axial direction X along the rod 10 when its portions with the secondary rib 132a, 132b are in front of the non-truncated portions of the rod 14a, 14b and when its truncated portions 133a, 133b are in front of the truncated portions 13a, 13b of the rod (locked position of the platen).

According to an advantageous arrangement of the invention, at least one of the portions of the secondary rib 132a, 132b is provided with a limit stop 134 configured to block the rotation of the plate 130 with respect to the rod 10 in a direction of rotation R around the X axis, collaborating with a lateral edge 15b or 15c of a primary rib 12 or two parallel adjacent primary ribs, in locked position.

The plate 130 is thus mounted on the rod 10 performing a typical translational-turning movement of the bayonet systems. First, it is moved along the rod 10, in the axial direction X, in unlocked position, then is rotated around the axis of the rod, according to the direction R, sliding its secondary ribs then between two primary ribs of the section of the rod until the stop 134 comes into contact with the lateral edge of at least one of the primary ribs 12. The pivoting performed generally corresponds to a quarter of a turn. An apprehension groove 138 can advantageously be provided on the periphery of the plate 130 in such a way as to facilitate its rotation by the user.

In the example, the first jaw 120 is a flexible pill, manufactured, for example, with a thermoplastic elastomer (e.g., SEBS). It presents here a circular section, of diameter D1.

In the example illustrated in Figures 4 and 5, tablet 120 is pumped, with its front face 120a, concave and its rear face 120b convex.

As illustrated in FIG. 4, the tablet 120 is provided with a central hole forming a fitting opening 121 whose edge 122 has a profile identical to that of the section of the ribbed rod 11.

Due to its flexibility, the tablet 120 can be fitted without difficulty on the rod 10 and move along it, in the axial direction X.

Once the tablet 120 is mounted on the rod 10 (see Figure 3) the edge of the fitting opening 122 follows exactly the edges of the surrounding ribs 12, as well as the edge of any stiffening grooves 18 of the rod , blocking the passage of air between the pellet 120 and the rod 10.

The axial tightening of the membrane between the two jaws takes place when the tablet is placed in an axial position sufficiently close to the plate 130 (locked position of the system). It is then elastically deformed against an advantageously flat part of the front face 130a of the plate 130, thus gripping the plate 130 and the pellet 120 to the membrane 4, in the axial direction X. Thanks to its elastic deformation, the tablet 120 is then locked in contact with the membrane 4 on a first contact zone.

To secure its locking on the rod 10 in the axial direction X, the pad 120 is provided with two lugs 123 projecting towards the inside of the fitting opening 121, and prepared to deform elastically. During the fitting of the first jaw 120 on the rod 10, each tab 123 deforms in cooperation with the peripheral edges 15a of the primary ribs 12. Once the tablet 120 is stopped in its position each tab 123 elastically returns to its initial position, projecting into the aforementioned opening of

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lace 121 from the periphery of this. In this position, it is axially immobilized between two adjacent primary ribs 12 of the section of the rod 11 to block the translation of the pellet 120 on the rod 10, in the axial direction X.

In the illustrated example, the plate 130 and the pellet 120 are also prepared to clamp radially to the membrane, in locked position.

As illustrated in FIG. 5, the tablet 120 therefore has, on its rear face, a protruding part 124 and having a radially external clamping surface 124a extending in the axial direction, said surface 124a being annular, continuous and closed on itself around the lace opening 121.

As illustrated in Figure 4, the plate 130 is also provided with two annular ribs on its front face.

A first rib 135, located at the edges of the mounting opening, delimits, with its radially internal face 135a, a cylindrical cavity, advantageously widened forwardly.

Once the system in locked position, the protruding part 124 of the tablet 120 is to fit into the cavity 135 of the plate 130, the membrane 4 being thus clamped between the radially internal surface 135a of the cavity 135 and the surface radially external protruding 124.

A second rib 136 is along the peripheral edge of the plate 130. Its radially internal surface 136a has, in FIG. 4, a diameter D2, slightly greater than the diameter D1 of the pellet 120.

Once the system in locked position, the peripheral edge 125 of the pad 120 (which is elongated in its collapsed position) will thus cooperate with the radially inner surface of the rib 136, in such a manner as to radially pinch the membrane 4. between the tablet 120 and the plate 130 on a third zone continuous and closed on itself.

Between the first and the second rib, the front face of the plate 130 is globally planar.

A splitting process using the sealing system 100 described above includes at least the following steps:

In a first step, fastening elements 2 are fixed to the wall F to unfold, for example, by hooking its hook base 13 on a profile P, generally horizontal, previously fixed on said wall F.

In a second step, at least one layer of thermal and / or acoustic insulation 3 is threaded on or interposed between the fastening elements 2.

In a third stage, a plate 130 is fitted on the rod section with ribs 11 of each fastening element 2, and locked in position, generally against the layer of insulator 3, by pivoting a quarter turn.

In a fourth stage, a membrane 4 is threaded onto the fastening elements 2.

In a fifth step, a pellet 120 is fitted on the rod 10 to a locked position in which it elastically deforms, its rear face resting axially against the flat part of the front face of the body.

plate 130. In this position, the projecting part 124 of the tablet 120 is to be fitted into the cavity 135 of the

plate 130, and the peripheral edge of the tablet 120 comes into contact with the rib 136 of the plate 130. The membrane 4 is thus in contact with the tablet around its threading opening 4a, at the level of three zones of contact concentric, continuous and closed on themselves, corresponding to pinching zones of the two jaws.

In a sixth step, a maintenance element 5 of a splitting structure is fitted on each fastening element 2.

In a seventh step, a splitting structure 6 is brought into contact with at least one maintenance element 5.

The example described above is not limiting. A variant embodiment of this first embodiment is illustrated especially in FIGS. 11 and 12.

The first clamp is devoid of tongues 123, and the locking means in position of the two

jaws with respect to each other in the locking position, include latching means.

As illustrated in Figure 11, the first jaw 120 includes male elements 127, especially in the form of harpoons or mushrooms, protruding from its rear face 120b.

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These male elements 127 are prepared to cooperate with corresponding holes 137 formed on the front face of the second jaw (see Figure 12), without piercing the membrane.

In the example of figures 11 and 12, the male elements 127 are dimensioned in such a way that the assembly formed by their heads covered by the membrane is prepared to engage in a respective hole 137.

Figures 6 to 8 illustrate a sealing system 200 according to a second embodiment of the invention.

In this embodiment, the system 200 includes a first jaw (from here, body) 220 having a fitting opening 221 whose engagement edge 222 is prepared to adapt to the profile of the section of the rod with ribs 11 and In this way, a seal is made with the rod 10, a second jaw (starting from a nut, nut) 230, and means for locking the first jaw in contact with the membrane.

As illustrated in Figure 6, the body 220 is intended to be mounted on the rod 10 prior to threading the membrane 4, while the nut 230 is intended to be mounted on the rod 10 after threading the membrane 4. In mounted position, the body 220 is therefore placed on the rear part of the membrane 4, and the nut 230, on the front.

As will be described in more detail below, the first and second jaws 220, 230 form a gland-type system.

The nut 230 is prepared to cooperate radially with the first jaw (the press-bar body) 220 to deform the edge of the fitting opening 222 of this jaw 220 until it fits the profile of the rib section with ribs 11, thus sealing with the rod 10. This position corresponds to the locked position of the system.

In this position, the nut 230 and the body 220 are further prepared to be axially applied to each other with the membrane 4.

The locking means of the two jaws in the locking position include bolting means.

The structure of the body 220 and the nut 230 is described in more detail below.

As shown in FIG. 7, the body 220 has a generally hollow cylindrical shape, whose transverse cavity 221 forms a fitting opening for the engagement of said body 220 on the rod 10 of a fastening element 2.

The body 220 is preferably made of a relatively flexible material, especially a thermoplastic elastomer such as the SEBS. In the particular embodiment shown, the profile of the edge 222 of the fitting opening 221 is a homothety of the section of the rod 11. The fitting opening 221 is thus wide enough to allow engagement of the body 220 on the section of the rod 11, but narrow enough so as to rub the edge 222 on the section of the rod 11 temporarily hold the body 220 in place before positioning the nut 230. In the assembled but not locked position, the body 220 does not seal with rod 10.

As illustrated in Figure 7, the body 220 includes at least:

- a threaded portion 223 provided with a thread on its periphery,

an outer collar 224 extending radially outwards, preferably to one side (rear side) of said threaded portion 223, and

- an extreme sealing portion 225 to the other side (front side) of said threaded portion 223.

Preferably, as illustrated in FIG. 7, the sealing portion 225 has, over at least a portion of its axial length, a section progressively retracted in the direction of the forward end of the body 220a. It has, for example, a globally truncated shape.

The sealing portion 225 is also provided with a plurality of substantially parallel cross sections 226 extending axially to the front end 220a of the body 220 into which they open. The cuts 226 thus delimit a plurality of disjoint sectors.

The nut 230 is illustrated in more detail in Figure 8.

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Like the body 220, the nut 230 has a globally cylindrical shape. But it is preferably made of a material which is smaller than that which forms the body, especially with a polyolefin, for example, with a polypropylene or with a polyethylene (loaded or not with glass fibers or with talc).

As illustrated in the figure, the nut 230 is provided with a cavity 231 that opens into the rear end 230b, by which it is ready to be mounted on the body 220.

The nut 230 includes at least:

- a section of the perforated cavity 233 prepared to cooperate by screwing with the threaded portion 223 of the body,

- further forward, a section of the guide cavity 235 prepared to cooperate with the sealing part of the body 225 to deform said part by displacing the sectors radially inwardly, in such a way that it leads to the edge of the fitting opening 222 at close contact with the section of the rod 11, and

an outer collar 234 prepared to approach the outer collar 224 of the body 220 during the screwing, the two collars 224, 234 being located axially opposite each other in such a way that they can clamp together the membrane 4 in the locked position of the system .

During the assembly, the body 220 is completely assembled at the beginning on the rod 10. Then the membrane 4 is threaded onto the rod 4, and possibly on the rear part of the body 220. Then, the nut 230 is mounted on the rod 10 and is screwed onto the body 220. On entering the guide section 235 of the nut cavity 230, the sealing portion 225 of the body 220 is deformed, to make the sealing on the periphery of the rod 10. At the same time. At this time, the membrane 4 is gripped between the two collars 224, 234, respectively of the body 220 and the nut 230, so as to provide sealing around the threading opening 4a of the membrane 4. The membrane can also be clamped between the body 220 and the nut 230.

Figures 9 and 10 illustrate a sealing system 300 according to a third embodiment of the invention.

In this third embodiment, the sealing system 300 includes a single jaw 320, presenting itself in the form of a patch. As in the first embodiment described above, the jaw 320 has a fitting opening 321 whose profile is identical to that of the section of the rod with ribs 11. The means for locking said jaw 321 in contact with the membrane 4 include aqrn a band of adhesive material 329 located on the rear face 320b of the jaw 320.

Preferably, in order to facilitate gluing, the rear face 320b of the jaw 320, or at least the aforementioned part previously stuck, is flat.

During the assembly, the clamp 320 is simply fitted on the section of the rod 11 and then stuck on the membrane 4, bringing the band 329 in contact with the front face of the membrane 4.

The examples described above are not, however, limiting.

In particular, although, the assembly of the jaws described above in relation to the figures is represented as monolithic elements, each of the parts could, as a variant, be made in several parts fixed to each other in the appropriate manner.

On the other hand, although Figures 1 and 2 illustrate a split including a single membrane and a single layer of insulation, it is also possible to use a sealing system according to the invention to seal with a membrane located between two layers of insulation. It is also possible to use a plurality of sealing systems according to the invention, of the same type or of a different type, on the same fastening element, in the case of a splitting including several membranes, for example, separated by one or more layers of insulation.

Claims (18)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty Sealing system (100, 200, 300) prepared to seal the periphery of the threading opening (4a) of a membrane (4) threaded on a length of rod (11) extending in an axial direction (X) and provided on its periphery a plurality of primary ribs (12), including said sealing system at least a first clamp (120, 220, 320) ready to be fitted on the said section of rod (11) by a fitting opening (121, 221, 321), and locking means of said jaw in contact with said membrane, the sealing system being characterized in that the edge (122, 222, 322) of the fitting opening is prepared to adapt to the shape of the mentioned section of the verilla (11). Sealing system (100, 300) according to claim 1, in which the fitting opening (121, 321) of the first jaw (120, 230) has a profile similar to that of the section of the rod (11). 3. Sealing system (200) according to claim 1 or 2, wherein the engagement edge (221) of the first jaw (220) is deformable to adapt to the profile of the section of the rod (11). 4. Sealing system (300) according to any one of claims 1 to 3, wherein the locking means includes adhesive means. 5. Sealing system (100, 200, 300) according to any one of claims 1 to 4, in which the contact area of the first jaw (120, 220, 320) with the membrane (4) is continuous and closed About herself. 6. Sealing system (100, 200) according to any one of claims 1 to 5, further including a second jaw (130, 230) prepared to fit over the section of the rod (11). 7. Sealing system (100, 200) according to claim 6, in which the locking means include means for locking the two jaws with respect to each other in a locking position in which the membrane (4) it is clamped between said jaws (120, 220, 130, 230) around its threading opening (4a). 8. Sealing system (100, 200) according to claim 7, wherein the locking means includes engaging means (127, 137). 9. Sealing system (100, 200) according to claims 7 or 8, in which the locking means include bolting means (223, 233) of one between the first and second jaws on the other jaw. 10. Sealing system (100, 200) according to any one of claims 6 to 9, wherein the jaws (120, 220; 130, 230) are configured to axially clamp the membrane (4), around its opening. threaded, in the interlocking position. 11. Sealing system (100, 200) according to any one of claims 6 to 10, wherein the first and second jaws (120, 130) include means prepared to collaborate in radially clamping the membrane, around its opening of skewered. 12. Sealing system (100, 200) according to any one of claims 6 to 11, wherein the second jaw (130, 230) has a rigidity greater than that of the first jaw (120, 220). Sealing system (100) according to any one of claims 6 to 12, in which the first jaw (120) and / or the second jaw has means for cooperating with the primary ribs (12) of the rod section (11) for the blocking in translation of said jaw (120) with respect to the section of the rod (11) in the axial direction (X). 14. Splitting assembly of a wall (F) that includes: - a sealing system (100, 200, 300) according to any one of the claims cited above, - a fastening element (2) including a rod (10) which in turn includes a free end of skew (10a) and at least one section with ribs (11) provided on its periphery with a plurality of primary ribs (12) ) and fixing means to the wall to be unfolded (13, 14, 15). 15. Unfolding a wall that includes - fastening elements (2) fixed on the wall to be unfolded (F), said fastening elements (2) each including a rod (10) which in turn includes a free end of threading (10a) and at least a section with ribs (11) provided on its periphery with a plurality of primary ribs (12), - at least one layer of thermal and / or acoustic insulation (3) threaded on or interposed between the fastening elements (2), - a membrane (4) threaded on the fastening elements (2) 5 10 fifteen twenty 25 30 - on each fastening element (2) a maintenance element (5) of a splitting structure (6), - on each clamping element (2), at least one first clamp (120, 220, 320) fitted by a fitting opening (121, 221, 321) on a section of the ribbed rod (11) of said clamping element fastening (2), said first jaw (120, 220, 320) being in a locked position in contact with the membrane (4), said unfolding being characterized in that the edge of the fitting opening (122, 222, 322 ) of each first clamp adapts to the shape of said section of rod (11). 16. Splitting according to claim 15, which also includes, on each fastening element (2), at least one second jaw (130, 230) fitted on the section of the rod with ribs (11) of said fastening element ( 2), the first and second jaws (120, 130; 220, 230) being locked relative to each other in a locking position in which the membrane (4) is clamped between said jaws around its openings. skewered (4a). 17. Procedure of unfolding a wall (F) that includes: a) the fixing on the wall of fastening elements (2) each including a rod (10) which in turn includes a free end of skew (10a) and at least one section with ribs (11) provided in its periphery of a plurality of primary nerves (12), b) the threading on or the insertion between the fastening elements (2) of at least one layer of thermal and / or acoustic insulation (3), c) in this order or in reverse order, the threading of a membrane (4) on the fastening elements (2), the fitting of a first jaw (120, 220; 320) on the section of the rod with ribs (11). ) of each fastening element (2), the edge of the fitting opening (121, 221, 321) of said first jaw (120, 220, 320) adapting to the shape of said section of the rod (11), and the interlocking of said first jaw (120, 220, 320) in contact with the membrane (4), d) the fitting on each fastening element (2) of a maintenance element (5) of a splitting structure (6), and e) contacting a splitting structure (6) with at least one maintenance element (5). 18. The splitting method according to claim 17, further comprising, in step c) fitting a second jaw (130, 230) on the section of the rod with ribs (11) of each fastening element (2), the interlocking of said first jaw (120, 220) against the membrane (4) which in turn includes the locking of the two jaws one with respect to the other in a locking position in which the membrane (4) is clamped between said jaws around its skewer opening (4a).