FR3055649A1 - SEPARATING ELEMENT OF A LOCAL HAVING A MEANS OF JOINING ELASTIC CORE - Google Patents

Abstract

The present invention relates to a separating element (1) of a room comprising an inner facing (16), an outer facing (17) and a frame (15), said inner (16) and outer (17) facing being secured to on both sides of said frame (15), at least one of said facings (16, 17) being substantially floating and having at least one degree of freedom with respect to said frame (15) in a plane substantially parallel to the planes of said facings (16). , 17). According to the invention, said floating face (16, 17) is secured to said frame (15) by means of at least one joining element (50), said at least one joining element (50) comprising: - a part of attaching (501) said floating face (16, 17), - an attachment portion (502) to said frame (15), and - a connecting portion (503) of said attachment portion (501) to said floating face (16, 17). ) said fastening portion (502) to said frame (15), said connecting portion (503) being flexible and elastically deformable to allow movement of said floating face (16, 17) relative to said frame (15).

Description

® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number: 3,055,649 (to be used only for reproduction orders)

©) National registration number: 16 58206

COURBEVOIE © Int Cl ⁸ : E 06 B 3/54 (2017.01), E 06 B 3/72, F 16 B 11/00

A1 PATENT APPLICATION

©) Date of filing: 02.09.16. ©) Applicant (s): CETIH Simplified joint-stock company ©) Priority: - FR. @ Inventor (s): SABLE JEROME, CHASSE SEBAS- TIEN and PROVOST DAMIEN. (43) Date of public availability of the request: 09.03.18 Bulletin 18/10. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ©) Holder (s): CETIH Simplified joint-stock company. related: ©) Extension request (s): ® Agent (s): CABINET PATRICE VIDON.

ELEMENT FOR SEPARATING A PREMISES WITH MEANS OF JUNCTION WITH AN ELASTIC CORE.

FR 3 055 649 - A1 (5 /) The present invention relates to a partition element (1) of a room comprising an interior facing (16), an exterior facing (17) and a frame (15), said interior facing ( 16) and exterior (17) being secured on either side of said chassis (15), at least one of said facings (16, 17) being substantially floating and having at least one degree of freedom relative to said chassis (15) in a plane essentially parallel to the planes of said facings (16, 17).

According to the invention, said floating facing (16, 17) is secured to said chassis (15) by means of at least one joining element (50), said at least one joining element (50) comprising:

- a fixing part (501) to said floating facing (16, 17),

- a fixing part (502) to said chassis (15), and

- a connecting part (503) of said fixing part (501) to said floating facing (16, 17) to said fixing part (502) to said chassis (15), said connecting part (503) being flexible and elastically deforming to allow movement of said floating facing (16, 17) relative to said chassis (15).

Element for separating a room by means of an elastic core facing junction

1. Field of the invention

The field of the invention is that of the design and manufacture of room separation elements, more commonly called joinery.

A device for separating a room is conventionally implemented to ensure the obturation, reversible or not, of an opening formed in a wall of a building, this wall being able to be external and to separate the building from the outside or internal well-being and separating several rooms located in a building.

Room separation systems include in particular windows, skylights, doors, entry doors, patio doors, garage doors, etc.

The invention finds particular application in the field of entry doors.

2. Prior art and its drawbacks

Referring to Figures 1 and 2, an entry door 1 conventionally comprises a frame 10, intended to be permanently fixed in an opening provided for this purpose in a wall of a building, and an opening 11 mounted movable relative to the frame 10 between a closed position, in which it closes the opening, and at least one open position, in which it at least partially releases the opening. For this, it is secured to the frame 10 by suitable attachment means such as, for example, hinges 12.

The opening 11 comprises a frame 15 on either side of which an inner facing 16 and an outer facing 17 are secured at their periphery.

The frame 15 generally comprises two lateral uprights 151 as well as an upper cross member 152 and a lower cross member 153. The frame 15 defines with the facings 16, 17 an interior space 18 which can be filled with one or more materials having properties of acoustic and / or thermal insulation and / or fire protection properties.

The door 1 comprises actuating means for passing the opening 11 from one to the other of its positions. These actuating means conventionally comprise a handle 13. It also comprises means for locking the opening 11 in its closed position. These locking means conventionally comprise a lock 14. The door further comprises elements ensuring the sealing of the opening with the frame.

The interior facing is intended to be turned towards the inside of the room while the outside facing is intended to be turned towards the outside of the room.

More generally, the interior and exterior designate the interior and exterior of a building or of a room located inside a building.

In the case of a separating element separating a building from the outside, as is for example the case of an entrance door, the interior facing is intended to be turned towards the interior of the building. It is therefore not subject to strong variations in temperature during the year even if it can be subjected to variations in hygrometry, the hygrometry being able to vary inside the building.

As the exterior facing is intended to face the exterior of the building, it is exposed to strong variations in temperature and / or humidity during the year. For example, the outside temperatures to which it can be exposed can vary between -20 ° C and 70 ° C over the course of a year.

Due to these large variations in temperature and / or humidity, the exterior facing can expand and shrink significantly. This phenomenon is commonly called bimetal effect. The opening, the chassis of which is integral with the periphery of the outer facing, is then subjected to deformation and / or warping phenomena.

This can cause technical problems:

malfunction of the locking system causing difficulty in opening or closing the door;

disturbance of the seal between the frame and the opening.

This can also cause aesthetic problems, the deformation of the opening may be unsightly.

Technical solutions have been developed in order to overcome these drawbacks.

It is notably known to interconnect, at their periphery, the interior and exterior facings of an element for separating a room such as a door, by means of a frame comprising two parts which are movable relative to one another. to the other and having two degrees of freedom in a plane parallel to the facing. One of the parts forms a rail in which the other part slides with play, forming a slide. Thus, slight movements of the outer facing are authorized relative to the chassis, which allows it to expand or retract freely relative to the chassis, and consequently to limit the deformation of the chassis and more generally of the opening under the effect of temperature variations to which the exterior facing may be subjected. Indeed, without play, the exterior facing is unable to expand or retract freely and can deform and transmit deformation forces to the interior facing via the chassis. The opening is deformed accordingly.

Such a solution makes it possible to reduce the deformation of the opening quite effectively. However, it can still be improved.

To function effectively, the assembly of the two movable parts of the chassis together must be particularly meticulous. Indeed, the clearances between the moving parts are relatively small; they are just sufficient to allow a small relative displacement under the effect of the expansion or withdrawal of the exterior facing without being too large to prevent the exterior facing from being mounted too "floating", that is to say that it can be moved manually. Thus, if the assembly of the movable parts together is not carried out in a precise manner, it may happen that they are not correctly aligned in their sliding cooperation portion and that the amplitude of their relative displacement is small or even nonexistent. This induces a risk of jamming of the moving parts of the chassis. The external facing is then not free, or at least not sufficiently free to expand and shrink under the effect of temperature variations to which it may be subjected so that it may nevertheless be caused to deform causing a deformation of the opening frame. This is all the more risky as the sliding part of the chassis secured to the external facing is generally joined thereto after having been brought into cooperation with the other part of the chassis manually by an operator.

In addition, the larger the size of the facings, the greater the risk of observing a too small amplitude of relative movement of the movable parts of the chassis.

Furthermore, such a solution does not allow expansion or withdrawal of the exterior facing in a diagonal direction. However, it is in a diagonal direction to the facing that the elongation or withdrawal thereof is most important.

The inventors have also realized, contrary to the a priori of a person skilled in the art according to which the exterior facing expands and shrinks only in a vertical direction and in a horizontal direction, that the exterior facing can actually deform by randomly in all directions of its plane.

The exterior facing can also be subjected locally to different temperatures. A lower region of the exterior facing may for example be exposed to solar radiation while an upper region of the facing may be in the shade.

This solution of the prior art does not allow either to allow a free plane random deformation of the external facing or to effectively authorize the localized free deformations resulting from exposure of the external facing to various local temperatures.

In addition, such a solution uses a relatively large number of complex parts (in particular the movable parts of the chassis), which represents a significant cost item.

The slide constituting one of the movable parts of the frame is generally made of aluminum alloy, which affects the thermal insulation of the door.

Another solution consists, rather than using a frame comprising two movable parts, to secure the exterior facing to the frame by means of a bead of elastic mastic, for example made of elastomer.

Such a technique allows, to a certain extent, in theory, a free expansion and a free removal of the external facing subjected to variations in temperature and / or hygrometry so as to limit the risk that the opening is deformed under the effect bimetal effect.

However, sealants of this type are in reality too stiff to truly allow free expansion and free removal of the exterior facing subjected to temperature and / or humidity variations to effectively combat the bimetallic strip effect unless a relatively bulky elastic sealant bead. This, however, affects the compactness of the assembly.

In addition, the application of the bead of mastic, which is carried out manually by an operator, is quite complex and tedious to carry out.

3. Objectives of the invention

The invention particularly aims to provide an effective solution to at least some of these different problems.

In particular, according to at least one embodiment, an objective of the invention is to provide an element for separating a room which makes it possible to fight effectively against the bimetallic strip effect so as to eliminate, or at least very strongly limit, the risk of deformation of the siding of its opening subject to strong variations in temperature and / or hygrometry.

In particular, the invention aims, according to at least one embodiment, to provide such a room separation element which allows free random expansion and / or localization of the facing of its opening subject to strong variations temperature and / or humidity.

Another object of the invention is, according to at least one embodiment, to provide such a room separation element which is simple in design and / or simple to manufacture.

Another object of the invention is, according to at least one embodiment, to provide such a room separation element which has good thermal insulation properties.

Another object of the invention is, according to at least one embodiment, to provide such a room separation element which is relatively compact.

4. Presentation of the invention

For this, the invention provides an element for separating a room comprising an interior facing, an exterior facing and a frame, said inside and outside facing being joined on either side of said frame, at least one of said facing being substantially floating and having at least one degree of freedom with respect to said chassis in a plane essentially parallel to the planes of said facings.

According to the invention, said floating facing is secured to said chassis by means of at least one junction element, said at least one junction element comprising:

a fixing part to said floating facing, a fixing part to said chassis, and a connecting part from said fixing part to said floating facing to said fixing part to said chassis, said connecting part being flexible and elastically deforming to allow the displacement of said facing floating relative to said chassis.

Thus, according to this aspect, the invention consists in connecting at least one facing, in particular that intended to be exposed to strong variations in temperature and / or hygrometry, to the chassis of an element for separating a room from the by means of one or more junction elements comprising a part for fixing to the facing, a part for fixing to the chassis, these fixing parts being linked together by a flexible connection part which is elastically deformable.

Such a flexible and elastic connecting part has the advantage of being rigid enough to effectively support the weight of the facing and of being flexible enough to allow free expansion and free removal of the facing subject to large temperature variations and / or relative humidity to the chassis, unlike the elastic sealant bead of the prior art. Its implementation thus makes it possible to fight effectively against the bimetallic strip effect.

Such a flexible and elastic connecting part also has the advantage of being much simpler in design and in manufacturing than a chassis with moving parts according to the prior art. In particular, it does not require manual centering of movable chassis parts relative to each other, the joining element naturally taking a position centered at equilibrium (when it is not subjected to stresses ).

Such a flexible and elastic connecting part also has the advantage of eliminating the risk of jamming inherent in the chassis with movable parts, insofar as it allows the expansion and removal of the facing due to its elastic deformation and not by sliding. in a guide housing like a rail.

According to a possible variant, said floating facing has a plurality of degrees of freedom relative to said chassis in a plane essentially parallel to the planes of said facing.

The implementation of the elastic connection part thus allows the facing to expand and retract randomly and localized in all directions.

According to a possible variant, said flexible connecting part comprises an elastic flexible body with a hollow core.

The implementation of such a hollow core makes it possible to impart in a simple and effective manner to the flexible connecting part sufficient elasticity to allow the facing to expand and retract in a random manner and localized in all directions.

According to a possible variant, said hollow core houses a cellular material.

This increases the mechanical strength of the flexible connecting part to allow it to sufficiently support the facing while giving it the elasticity necessary to allow the facing to expand and retract.

According to a possible variant, said flexible connecting part consists of a cellular material.

According to a possible variant, said chassis comprises:

a first housing for said fixing part to said chassis of said joining element;

a second housing for said flexible connecting part; said attachment portion to said floating facing extending outside said first and second housings.

According to a possible variant, which said fixing part to said chassis is force-fitted into said first housing and said fixing part to said floating facing is fixed to the latter by gluing.

The shrinkage and expansion of the facing are thus obtained due to the sole deformation of the joining element, in particular of its flexible connecting part, and not by the sliding of the joining element, in particular of its fixing to the chassis and connection, in a guide housing. This makes the free expansion / withdrawal of the facing more reliable compared to the techniques of the prior art comprising sliding elements which can jam and prevent the facing from expanding / retracting freely. According to a possible variant, each fixing part to said floating facing , each fixing part to said chassis, and each elastic connection part form a one-piece junction element.

A monobloc junction element means that it constitutes a single piece. This single piece may however possibly be made up of several parts linked together to form a one-piece assembly. However, it will preferably be produced in one single piece.

The one-piece structure of the junction element makes it very simple, particularly in terms of storage production and installation.

According to a possible variant, said fixing parts and said flexible connecting part are made of one or more materials having different stiffnesses.

According to a possible variant, a separation element according to the invention comprises a plurality of punctual junction elements distributed substantially uniformly around the periphery of said chassis.

According to a possible variant, said at least one junction element is produced by a continuous manufacturing process.

The invention also relates to a junction element for securing a facing of a separation element of a room to the frame thereof, said junction element comprising:

a fixing part to said floating facing, a fixing part to said chassis, and a connecting part from said fixing part to said floating facing to said fixing part to said chassis, said connecting part being flexible and elastically deformed to allow the displacement of said facing floating relative to said chassis, said facing being substantially floating and having at least one degree of freedom relative to said chassis in a plane essentially parallel to the plane of said facing.

According to a possible variant, said flexible connecting part comprises an elastic flexible body with a hollow core.

According to a possible variant, said hollow core houses a cellular material.

According to a possible variant, said flexible connecting part consists of a cellular material.

According to a possible variant, each part for fixing to said facing, each part for fixing to said chassis, and each part for elastic connection form a one-piece junction element.

5. List of figures

Other characteristics and advantages of the invention will appear on reading the following description of particular embodiments, given by way of simple illustrative and nonlimiting example, and of the appended drawings among which:

Figure 1 illustrates a illustrates a front view of a door according to the prior art or the invention;

Figure 2 illustrates a sectional view A-A (1) along the axis A-A of the door according to the prior art illustrated in Figure 1;

Figures 3 and 4 illustrate cross-sectional and perspective views of a chassis according to the invention;

Figures 5, 6, 7 and 8 illustrate cross-sectional and perspective views of variants of a junction element according to the invention;

Figures 9 and 10 illustrate sectional views A-A (2) along the axis A-A of the door according to the invention illustrated in Figure 1 in a nominal state and in an expanded or retracted state;

Figures 11, 12 and 13 illustrate front views of a door according to the invention with different positioning variants of the connecting element (s); FIG. 14 illustrates in perspective cross-sectional view of an example of a point junction element;

FIG. 15 illustrates illustrate views in section AA (3) along the axis AA of a variant of the door illustrated in FIG. 1 according to which the interior facing and the exterior facing are secured to the frame by means of at least one connecting element;

Figures 16 and 17 illustrate sectional views AA (4) and AA (5) along the axis AA of variants of the door illustrated in Figure 1 with a simplified frame of the invention to secure one or two facings to the frame to the by means of one or more connecting elements.

6. Description of particular embodiments

6.1. Architecture

We present in relation to Figures 1 and 3 to 17 different variants of an entrance door according to the invention.

The present invention however applies to other types of elements for separating a room, such as for example a window, a French window, a garage door or the like. More generally, it applies to any type of element for separating a room comprising a facing capable of being subjected to variations in temperature and / or hygrometry.

An entry door 1 conventionally comprises a frame 10, intended to be permanently fixed in an opening provided for this purpose in a wall of a building, and an opening 11 mounted movable relative to the frame 10 between a closed position, in which it closes the opening, and at least one open position, in which it at least partially releases the opening. For this, it is secured to the frame 10 by suitable attachment means such as, for example, hinges 12.

In the present embodiment, it is an entry door 1 to a striking leaf. It could also be a door with several knocking and / or translation opening elements.

The opening 11 comprises a frame 15 on either side of which an inner facing 16 and an outer facing 17 are preferably secured at their periphery.

The chassis 15 generally comprises lateral uprights 151 as well as an upper cross member 152 and a lower cross member 153. The chassis 15 defines with the facings 16, 17 an interior space 18 which can be filled with one or more materials having properties of acoustic and / or thermal insulation and / or fire protection.

The door 1 comprises actuating means for passing the opening 11 from one to the other of its positions. These actuating means conventionally comprise a handle 13. It also comprises means for locking the opening 11 in its closed position. These locking means conventionally comprise a lock 14. The door further comprises elements ensuring the sealing of the opening with the frame.

As will appear more clearly below, at least one of the facings, preferably the outer facing subjected to large variations in temperature and / or humidity, is substantially floating and has at least one degree of freedom relative to the chassis in a plan essentially parallel to the plans of the facings. In other words, this facing is decoupled from the chassis.

Within the meaning of the invention, the concept of floating facing does not mean that the facing can be moved manually relative to the chassis. This means more that it can move relative to the chassis when it expands or retracts. The displacement of the floating facing relative to the chassis results essentially from its expansion or withdrawal. In these two cases, its surface increases or decreases, which implies a relative displacement of the floating facing relative to the chassis.

According to the principle of the invention, the floating facing is secured to the chassis 15 by means of at least one junction element 50, this junction element 50 comprising:

a fixing part 501 to the floating facing; a fixing part 502 to the frame 15, and a connecting part 503, which interconnects the fixing parts 501, 502; the connecting part being flexible and elastically deforming to allow the displacement of the floating facing relative to the chassis 15.

The contours of the connecting part 503, which constitutes an elastic return part, delimit a hollow space 504 which constitutes the hollow core of the joining element 50. This hollow space can be closed or else be open to one or more places for example one or more ends. This space can be filled with air or another gas benefiting from higher thermal properties (for example less sensitive to temperature variations in terms of volume). Alternatively, it can be filled with a cellular material. The elastic return portion 503 may also not be hollow but be entirely made of cellular material.

In this embodiment, the elastic return portion 503 has an essentially elliptical cross section. In the variants illustrated in Figures 7 and 8, this section may be essentially circular or essentially rectangular or even square. Other forms can however be envisaged.

The joining element 50 can be obtained by a continuous manufacturing process such as for example extrusion or pultrusion. It could still be obtained by molding. It will be made of an elastic material, in particular shape memory, preferably made of elastomer. It could also be made of a harder plastic material but having elastic properties. It could also be made of an elastic metallic material although this is less advantageous in terms of thermal insulation. By way of example, the joining element (fixing parts and elastic return part) can be produced from one or a combination of several of the following materials:

elastomer, thermoplastic, cellular type materials, composite material; aluminum alloy, stainless steel, spring steel, shape memory alloy (nickel, titanium ...).

Depending on the material in which it will be made, the junction element can perform the function of a thermal bridge breaker.

Due to its elastic properties, the junction element 50 can deform when subjected to stresses and then return to its initial shape, at least essentially, when these stresses become sufficiently low.

The fixing part 501 to the floating facing (in this case the external facing 17), the fixing part 502 to the frame 15 and the elastic return part 503 form in this embodiment, a one-piece junction element, it is that is to say constituting a single piece.

The joining element may be made from a single material. In other words, the fixing parts and the elastic connecting part can be made of the same material.

Alternatively, the joining element could consist of several elements fixed to each other, although this is more complex. These elements can be made of different materials. For example, the fixing parts can be made of an aluminum alloy while the elastic connecting part can be made of elastomer. These elements can be made of the same material with different rigidities. For example, the fixing parts can be made of a rigid elastomer while the elastic connecting part can be made of a more flexible elastomer.

The fixing parts will preferably be more rigid than the elastic connecting part.

As shown in Figures 3 and 4, the frame 15 comprises: a first housing 154 adapted to receive the fixing part 502 to the frame 15 of the junction element 50;

a second housing 155 capable of receiving the elastic return part 503 of the joining element 50.

These housings 154, 155 define for example a groove along the lateral uprights 151, of the upper cross member 152 and of the lower cross member 153 of the chassis 15. These housings can be provided only on certain lateral uprights and / or certain cross members.

FIG. 9 illustrates the assembly of an interior facing 16 and an exterior facing 17 to the frame 15, the outside facing 17 being secured to the frame 15 by means of a junction element 50. Alternatively or in addition, the facing interior 16 could be secured to chassis 15 by means of a junction element 50.

The attachment part 502 to the chassis 15 is force fitted into the first housing 154 of the chassis. The dimensions of this housing 504 and that of the fixing part 502 to the frame are chosen accordingly so that there is no sliding of the fixing part 502 in the first housing 154 after the element has been secured. junction 50 to chassis 15.

The joining of the junction element 50 to the frame 15 can be obtained by forcibly sliding the junction element 50, in this case its fixing portion 502 and its elastic return part 503, in the first 154 and second 155 chassis 15 housings along the longitudinal axis of these housings (see arrow A in figure 9).

Alternatively, the joining element 50, in particular its fixing part 502 and elastic return part 503, can be pushed into the first 154 and second 155 housings by exerting a force along an axis essentially perpendicular to the plane of the facings ( see arrow B figure 9). In this case, the ends 5021, 5022 of the junction part 502 to the chassis 15 will deform to approach the passage of the second housing 155 before resuming their initial shape, under the effect of their elasticity, to come and be housed in the first housing 154.

Once the junction element 50 is secured to the chassis 15, its attachment part 501 to the floating facing, in this case the outer facing 17, extends outside the first 154 and second 155 housings.

The surface of the attachment part 501 to the floating facing 17 facing the chassis 15 is preferably essentially flush with the chassis.

The outer facing 17 is fixed to the fixing part 501 preferably by gluing. It could alternatively be by other means such as for example by crimping.

With reference to FIG. 11, a single junction element 50 can be used to secure a facing to the chassis. In this case, the joining element 50 will have an outline of a shape essentially similar to that of the outline of the frame 15, namely essentially rectangular, and will extend all along the outline of the frame.

With reference to FIG. 12, several junction elements 50 can be used to secure the floating facing to the chassis. At least one junction element 50 may for example be secured to each lateral upright 151, to the upper cross member 152 and to the lower cross member 153 of the chassis. The number of junction elements 50 on each lateral upright 151, and on the upper 152 and lower sleepers 153 may however be different.

With reference to FIG. 13, a plurality of junction elements 50, called point junction elements, may be distributed all along the periphery of the frame 15. This distribution may or may not be uniform.

FIG. 14 illustrates a cross-sectional and perspective view of an example of a point junction element 50. In this example, the elastic return part 503 essentially has the shape of a three-dimensional ellipse. Of course, any other suitable form can be implemented such as a sphere, a cube or the like. Such a point junction element can for example be obtained by molding or 3D printing.

The joining element or elements are preferably placed on the periphery of the facing concerned.

As has just been described, only the exterior facing or possibly the interior facing can be fixed to the chassis by means of one or more joining elements. In variants, it is also possible for the interior and exterior facings to be secured to the chassis by means of one or more joining elements. FIG. 15 illustrates a variant of this type.

In a simplified variant, illustrated in FIG. 16, the chassis may not include first and second housings respectively for the part for fixing to the chassis and the elastic return part of the joining element or elements. In this case, the junction part 502 to the chassis 15 of the junction element (s) 50 can be simply secured against the surface of the chassis 15 facing the corresponding facing. This fixing is preferably carried out by gluing or by another suitable means such as for example crimping. Obviously, this variant is less compact than the previous one.

Figure 17 illustrates the implementation of this simplified variant for securing the two facings to the frame by means of one or more junction elements.

6.2. Operation

The operation of a door according to the invention is more particularly described in relation to FIGS. 9 and 10.

FIG. 9 illustrates the state of equilibrium of the exterior facing 17 when it is not subjected to variations in temperature and / or hygrometry. It is then in a state in which it has not undergone either expansion or withdrawal.

In this state of equilibrium, the joining element or elements 50 are in an undeformed state.

When the outer facing 17 expands or shrinks under the effect of temperature and / or humidity variations to reach an expanded or shrunk state, its surface varies globally or more punctually in certain areas. To allow these dimensional variations of the outer facing, the elastic return portion 203 of the joining element or elements 50 deforms elastically as can be seen in FIG. 10 which illustrates an example of deformed state of the joining element. The movement visible in this figure is in one direction and one direction. It is actually possible in several directions and in several directions. The attachment part 201 to the facing then moves outside the housings of the chassis 15 opposite the latter. This displacement is visible by comparing Figures 9 and 10 and observing the axis offset of the junction element.

When the facing is no longer subjected to variations in temperature and / or humidity, it returns to its equilibrium dimensions. The joining element or elements elastically return to their undeformed state.

Each junction element allows a displacement, along its transverse axis, of the floating facing in a plane essentially parallel to the plane of the facing (cf. arrow C in figure 10). It also allows movement, along its longitudinal axis, of the floating facing in a plane essentially parallel to the plane of the facing (see arrows A in Figure 9). In practice, it also allows displacements of the floating facing along a multitude of axes in a plane essentially parallel to the plane of the facing. The floating facing can then expand and retract freely relative to the chassis not only in a vertical direction and in a horizontal direction in the plane of the facings, but also randomly and located in all directions of its plane.

Due to the elasticity of the joining element or elements, the floating facing is self-centered with respect to the chassis.

Claims (15)

1. Room separation element (1) comprising an interior facing (16), an exterior facing (17) and a frame (15), said interior (16) and exterior (17) facing being joined on both sides. 'other of said chassis (15), at least one of said facings (16, 17) being substantially floating and having at least one degree of freedom relative to said chassis (15) in a plane essentially parallel to the planes of said facings (16,17) , characterized in that said floating facing (16, 17) is secured to said chassis (15) by means of at least one joining element (50), said at least one joining element (50) comprising: a fixing part (501) to said floating facing (16,17), a fixing part (502) to said chassis (15), and a connecting part (503) of said fixing part (501) to said floating facing (16, 17) to said fixing part (502) to said chassis (15), said connecting part (503) being flexible and elastically deforming to allow movement of said floating facing (16, 17) relative to said chassis (15). 2. Separating element (1) according to claim 1 wherein said floating facing (16, 17) has a plurality of degrees of freedom relative to said frame (15) in a plane essentially parallel to the planes of said facing (16,17) . 3. Separating element (1) according to claim 1 or 2 wherein said flexible connecting part (503) comprises an elastic flexible body with a hollow core (504). 4. Separating element (1) according to claim 3 wherein said hollow core (504) houses a cellular material. 5. Separating element (1) according to claim 1 or 2 wherein said flexible connecting part (503) is made of a cellular material. 6. Separation element (1) according to any one of claims 1 to 5 in which said chassis (15) comprises: a first housing (154) for said fixing part (502) to said frame (15) of said joining element (50); a second housing (155) for said flexible connecting portion (503); said fixing part (501) to said floating facing (16, 17) extending outside said first (154) and second (155) housings. 7. Separating element (1) according to claim 6 wherein said fixing part (502) to said frame (15) is force fitted into said first housing (154) and said fixing part (501) to said floating facing (16 , 17) is fixed thereto by gluing. 8. Separating element (1) according to any one of claims 1 to 7 in which each fixing part (501) to said floating facing (16, 17), each fixing part (502) to said chassis (15), and each elastic connection part (5043) form a one-piece junction element (50). 9. Separation element (1) according to any one of claims 1 to 8 wherein said fixing parts (501, 502) and said flexible connecting part (503) are made of one or more materials having different stiffnesses. 10. Separation element (1) according to any one of claims 1 to 9 comprising a plurality of point junction elements (50) distributed substantially uniformly around the periphery of said frame (15). 11. Joining element (50) for securing a facing (16, 17) of a room separating element (1) to the frame (15) thereof, said facing (16, 17) being substantially floating and having at least one degree of freedom with respect to said chassis (15) in a plane essentially parallel to the planes of said facings (16, 17), said joining element (50) comprising: a fixing part (501) to said floating facing (16,17), a fixing part (502) to said chassis (15), and a connecting part (503) of said fixing part (501) to said floating facing (16, 17) to said fixing part (502) to said chassis (15), said connecting part (503) being flexible and elastically deforming to allow movement of said floating facing (16, 17) relative to said chassis (15). 12. Joining element (50) according to claim 11 wherein said flexible connecting part (503) comprises an elastic flexible body with a hollow core (504). 13. Joining element (50) according to claim 12 wherein said hollow core (504) houses a cellular material. 14. Joining element (50) according to claim 11 wherein said flexible connecting part (503) is made of a cellular material. 15. Joining element (50) according to any one of claims 11 to 14 in which each fixing part (501) to said facing (16, 17), each fixing part (502) to said chassis (15), and each part elastic connection (503) form a junction element (50) in one piece. 1/5 A-A (1)