WO2017220439A1

WO2017220439A1 - Demountable and remountable false wall device

Info

Publication number: WO2017220439A1
Application number: PCT/EP2017/064746
Authority: WO
Inventors: Jean-Marc Scherrer; Hervé MUNCK
Original assignee: Normalu Sas
Priority date: 2016-06-21
Filing date: 2017-06-16
Publication date: 2017-12-28
Also published as: FR3052797A1; FR3052797B1; EP3472400B1; EP3472400A1

Abstract

False wall device intended for covering a partition (16) of a wall or ceiling, comprising: - a chassis (2) forming a frame, the shape of which matches that of the partition (16); and - a stretched fabric (1) hooked to the chassis (2) in such a way of to cover the partition (16). This false wall device is characterised in that it comprises: - means for demounting and remounting at least one demountable peripheral segment of the fabric (1) in order to have access to the partition (16); - means for adjusting the fabric (1) with respect to the frame, located on the periphery of the fabric (1) apart from said demountable peripheral segment.

Description

Removable and removable false-wall device

FIELD OF THE INVENTION The invention relates to a dismountable and reassemblable false-wall device intended to be fixed in front of a wall such as a wall or a ceiling. The invention thus relates to the technical field of suspended ceilings and false walls, behind which for example can be light sources, or technical hatches existing on the wall to be covered.

State of the art

False-wall devices are known comprising a stretched fabric fixed to the base of a frame, generally parallelepipedic, which consists of the association of profiles, commonly called smooth, which form each of its sides. To this end, the fabric comprises a fastening means attached to its periphery.

For example, as described in patent FR 2 630 476, the peripheral edge of the fabric may be provided with a harpoon. In this case, the fabric is made of a synthetic polymer material, such as polyvinyl chloride (PVC), on which the harpoon can be welded.

For a textile fabric, on which it is complex to perform a weld can be performed, a conventional fastening means consists of a rod sewn over the entire periphery of the fabric.

The harpoon and the ring are deformable and fit to fit into a groove provided for this purpose in the smooth. Retaining means make it possible to retain the harpoon or the rush in the throat. The harpoon and the rush may be out of the throat, then inserted again, as desired.

However, they have the disadvantage of not ensuring enough tension on the canvas to cover a ceiling or a complete wall. Indeed, on large surfaces, the gondola canvas, which is not desirable from an aesthetic point of view, especially when the canvas is printed since the print is then deformed.

FIRE I LLE OF REM PLACEM ENT (RULE 26) Since the harpoon or the ring is directly attached to the entire perimeter of the fabric, no adjustment of the fabric is possible relative to the frame when fixing. The measurements of the wall must therefore be made beforehand with great precision.

In addition, for an application on a ceiling, the ring presents a risk of recess by gravity. Indeed, the retaining means are not sized to retain the rod, which can leave the groove, especially under the effect of the weight of the fabric. To obtain a large surface of false wall, especially on the ceiling, with sufficient tension of the fabric, it is customary to use slats provided with flexible clips in which is inserted directly around the perimeter of the fabric. In this case, the fabric is devoid of attachment means at its periphery. The canvas is thus held in clips by pinching, whether PVC or textile.

On the same principle, there are also inserts with a flexible lip capable of pinching the periphery of the fabric. These inserts are inserted into a groove provided for this purpose in the rails, as described in document FR 3018297.

When the fabric is PVC, it is extensible, especially by heating. It is therefore possible to adjust the canvas according to the size of the frame, to a few centimeters. This makes it possible to compensate for imperfections and construction defects (building tolerance) to ensure perfect installation. This is not the case with a fabric that has little or no elasticity, like a textile fabric.

Indeed, when the fabric is textile, it is non-expandable, and it is therefore necessary to provide the margin in terms of its dimensions, in order to adjust it relative to the frame. These textile fabrics are complex to install because it must be extremely precise in terms of dimensions, compared to an extensible fabric.

In any case, once the canvas hung in the frame, the excess material emerging clips and inserts is cut to obtain a clean finish.

Once the canvas stretched, the latter is only removable and very difficult to reassemble because there is more enough excess material to pull on to bring out the clips, or to reattach it in the clips or inserts. This canvas is therefore for single use. But the wall to cover is almost always equipped with light outputs, or technical hatches. It may be necessary to have access to these light outputs, to change a light source, for example, or to have access to these hatches, for example for electrical or sanitary intervention.

In this case, it is necessary to remove and replace the entire canvas, which generates a significant cost. Another method exists to be able to unhook the fabric in all or part, and to overcome in parallel the lack of elasticity of the textile fabrics. This is to equip the peripheral edges of the fabric with a system of spring or peripheral lacing connected to the rails. However, these systems are not aesthetic, and let in air and dust, which is not desirable.

Summary of the invention

The present invention aims to overcome the various disadvantages mentioned above, by means of a false-wall device which is removable and reassembly, while being sufficiently robust to cover large areas, both at a level of wall only from a ceiling. The device must be simple to implement, and ensure sufficient tension of the fabric for a beautiful aesthetic. The device must also be adaptable to any type of fabric, with or without elasticity. This object is achieved by means of a false-wall device intended to cover a wall or ceiling type wall, comprising:

a frame forming a frame whose shape matches that of the wall; a stretched canvas hooked to the frame so as to cover the wall. This device is mainly characterized in that it comprises:

disassembly and reassembly means of at least one removable peripheral portion of the fabric to have access to the wall;

adjustment means of the web relative to the frame located on the periphery of the web except said removable peripheral section. The main idea of this invention is to mix the technical solutions of the prior art, by providing both a removable and remountable fabric, and a fabric that can be exactly adjusted relative to the frame.

This specific combination of dismounting and reassembly means and adjustment means makes it possible to respond to the technical problem posed, because it makes it possible to unhook at least a portion of the fabric in order to have access to the technical zones of the wall, and to reassemble the same canvas afterwards while adjusting it exactly in relation to the chassis.

This false-wall device is thus suitable both for small areas to cover, as for large areas to cover. The adjustment means make it possible to obtain a fabric having sufficient tension to appear perfectly flat on the underside.

Only one or more sections of the fabric are planned to be dismantled and reassembled. Each demountable section is positioned closest to a technical area. If there is only one technical area, then only one demountable section will be needed. If the technical areas are close together, they can also be accessible via a single demountable section of canvas. On the contrary, if they are arranged at the ends of the wall, several demountable sections of fabric will then have to be provided. The design of the fabric is therefore made according to the dimensions of the wall to be covered and according to any technical areas present on the wall.

The removable sections of the fabric do not include means for adjusting the fabric relative to the frame. There is therefore a mix to achieve on the peripheral periphery of the fabric, with sections provided for disassembly / reassembly, and sections provided for adjustment. All of these sections form the entire periphery of the canvas. For each case of wall to be covered, it is therefore necessary to find a balance between the removable / reassemblable fabric length and the adjustable fabric length, so that both functions are satisfied.

According to the different embodiments of the invention, which can be taken together or separately: said disassembly and reassembly means consist of a removable hanging device provided between said removable peripheral portion of the fabric and the frame.

said removable hanging device consists of a hooked edge fixed on said removable peripheral portion of the fabric and adapted to be inserted inside a groove provided for this purpose in the frame.

said hooked edge consists of a harpoon welded to said removable peripheral portion of the fabric, the fabric being PVC.

said hooked edge consists of a rod sewn to said removable peripheral portion of the fabric, the fabric being textile.

said adjustment means of the canvas relative to the frame consist of:

- A profile adapted to fit removably in a groove provided for this purpose in the frame, and

- Surplus material provided on the periphery of the fabric except said removable peripheral section, the excess material being devoid of hooking means and adapted to be fixed in said profile and cut.

Thus, during the first fixation of the canvas, the latter is perfectly adjusted to the frame. Once the adjustment is made, the fabric can no longer be disassembled, except at its (their) removable peripheral section (s).

said profile comprises at least one deformable longitudinal lip capable of pinching the periphery of the fabric so as to fix it to the frame.

said profile has a shape complementary to that of the chassis groove.

said profile has a longitudinal groove arranged to receive a shoulder formed on one of the side walls of the groove of the frame in which it is intended to be fitted.

said means for adjusting the fabric with respect to the frame consist of an elastic clip adapted to fit removably in a groove provided for this purpose in the frame, and of the excess material provided on the periphery of the fabric except said removable peripheral section, this excess material being devoid of hooking means and adapted to be fixed in said clip and then cut. when said frame forms a rectangle, said disassembly and remountability means are located on at least one side of the rectangle: the entire side can be dismountable, or only a portion of the side.

said means of dismountability and remountability are preferably located on two consecutive sides of the rectangle: the two sides in their entirety are removable, in order to disengage the fabric on the half of the wall, diagonally.

- The false-wall device comprises lighting means arranged between the fabric and the wall: these lighting means are different from those possibly initially provided in the wall. They must also be accessible, and are part of the technical areas.

It should be noted that any other form of frame may be considered. For example, the frame may be circular, with a removable peripheral portion arcuate.

The invention also relates to the use of this false-wall device, as described above, for the production of light boxes. The invention also relates to a web for a false-wall device, comprising a device for hanging removable and reassemblable on at least one peripheral section, and having, over the rest of its periphery, the excess material without means hooked . The fabric is thus made with a hanging device of the choice, of the harpoon or rod type, depending on its material, only over a certain length of peripheral edge. The rest of the peripheral border is not made, but is cut differently leaving a surplus of material.

In general, 10cm of excess material are provided, in order to be able to correctly grip the fabric and stretch it in the clips or the inserts of the frame, before the finishing cut.

Presentation of figures The invention will be better understood, and other objects, details, features and advantages thereof will become more clearly apparent in the following detailed explanatory description of at least one embodiment of the invention given to As a purely illustrative and non-limiting example, with reference to the accompanying schematic drawings.

On these drawings:

- Figure 1 shows, in sectional view, an example of installation of a false wall device according to the invention;

- - Figure 1a shows, in section, another example of a fastening means of the canvas in the form of a clip;

- Figures 2 to 4 illustrate, in soffit view, several possible designs of fabric according to the invention.

detailed description

It should be noted that, in the figures, the structural and / or functional elements common to the various embodiments may have the same references. Thus, unless otherwise stated, such elements have identical structural and material properties.

Figure 1 illustrates a possible example of a false-wall device.

This device contains a frame 2 formed by a set of profiles, called smooth 2, having a complex structure.

For example, in order to make a false wall on a rectangular ceiling 16, the frame 2 comprises four smooth 2 extending on the four walls 17,18 of the room. They are fixed to the walls 17, 18 by screwing or by any other fastening means.

A web 1 is stretched between these four rails 2, at the bottom of the frame 2, that is to say the distal portion of the ceiling 16.

According to a possible configuration illustrated on the right side of Figure 1, the fabric 1 is provided at its peripheral edge with a means of hooked in the form of harpoon 8. This harpoon is welded to the fabric, when it is PVC.

Each arm 2 comprises, in the lower part, a groove 3 having a U-shaped section and being delimited by two side walls 5, 6 and a bottom wall 7. The ends of the side walls 5,6 U, opposite the bottom wall 7, define an opening for the passage of the harpoon 8 of the fabric 1 in the groove 3. To ensure the hooking of the harpoon 8 in the groove 3 , the inner face of one of the side walls 5,6 has a shoulder 4 hooked longitudinally. In the example shown, the shoulder 4 is formed on the internal face of the side wall 5. The free end of the harpoon 8 abuts against this shoulder 4, thus allowing the locking and engagement of the fabric 1 in housing.

There are several techniques for hanging canvas 1 stretched.

Instead of harpoon 8, a rod can be sewn on the peripheral edges of the fabric 1, when it is textile. This ring has a boss allowing it to hook with the shoulder 4 of the groove 3.

According to another possible configuration illustrated on the left-hand side of FIG. 1, an insert 9 is inserted beforehand into the groove 3, the hold of which is always ensured by the shoulder 4. The insert 9 consists of a profile 9 rigid, having at least one flexible lip 15 for hanging the fabric 1. Indeed, the bare peripheral edges of the fabric 1 are slid into the insert 9 and are held by pinching thanks to the flexible lip 15.

More specifically, the insert 9 has a shape substantially complementary to that of the groove 3 of the rail 2. It is advantageously made of PVC, while the rail 2 is made of metal material. The smooth 2 and the insert 9 do not necessarily have the same length, as will be explained later in the description.

The insert 9 has a substantially U-shaped cross section with a bottom wall 12 and two lateral arms 10, 1. These arms 10, 1 are dimensioned so as to extend over the entire width of the lateral walls 5, 6 of the groove 3 of the heddle 2. By the width of the arms 10, 1, the distance separating the bottom wall 12 of the insert 9 and the free end of the arms 10.1 1. Likewise, the width of the side walls 5, 6 of the groove 3 denotes the distance separating the bottom wall 7 from the groove 3 and the free end of the side walls 5, 6.

One of the arms 10 of the insert 9 has a groove 14 sized to receive the shoulder 4 of the smooth 2. The introduction of the insert 9 is performed either by a longitudinal sliding in the groove 3 of the arm 2, or by elastic casing in the groove 3 of the arm 2 until the groove 14 come snap on the shoulder 4 of the rail 2. After this establishment, any movement between the insert 9 and the rail 2 is prevented.

The other arm 1 1 of the insert 9 is provided on its inner face with semi-rigid or flexible longitudinal lips 15, dimensioned to bear against the inner face of the opposite arm 10.

In order to facilitate insertion and guiding of the peripheral edge of the fabric 1, the portion of the arm 10 upstream of the groove 14 has an internal face arranged to form a ramp 13 from the end of the arm 10 to the groove 14.

Concretely, the bare peripheral edge of the fabric 1 is inserted into the insert 9, between the arm 10 and the lips 15, with the aid of a spatula preferably. The lips 15 press the fabric 1 against the arm 10 so as to hold it firmly in the insert 9. Then the fabric forms a fold 1a at the bottom of the insert 9 and the excess material 1b spring of the insert 9, since the space is limited within the insert 9. This excess material 1b is provided to be able to properly adjust the fabric 1 on the wall 16. In particular, if the walls 17,18 are not perfectly rights, this excess material 1 b makes it possible to make up for these differences.

The excess portion 1b coming out of the insert 9 is then cut to raz at the cutting line 1 c, to obtain a clean finish.

After cutting, it is no longer possible to disassemble and reassemble the fabric 1 since there is not enough material to pull it out of the insert 9, and vice versa to tension it correctly before reinserting it into the fabric. insert 9. This is a hook-on device for single use.

According to yet another possible configuration diagrammatically illustrated in FIG. 1a, an element in the form of an elastic clip or "clip" 9 'is previously put in place within a groove of complementary shape and adapted to a rail (not shown ).

The clip 9 'consists of a profile having at least one lip 15' - semi-rigid or flexible - carried by an elastically deformable branch 1 1 'for hanging the fabric 1. Indeed, the bare peripheral edges of the fabric 1 are slipped into the clip 9 'and are held by pinching with the lip 15 carried by the flexible arm 1 1'.

The clip 9 'is advantageously made of PVC, while the smooth 2 is made of metal material. The smooth 2 and the clip 9 'do not necessarily have the same length, As in the previous case of the insert 9, concretely, the bare peripheral edge of the fabric 1 is inserted into the clip 9 ', between a limb 10' opposite the limb 1 1 'and the lips 15, at the using a spatula preferably. The lips 15 press the fabric 1 against the branch 10 'so as to hold it firmly in the clip 9' ,. Then the fabric forms a fold at the bottom of the clip 9 ', and excess material spring clip 9'. This excess material is provided to be able to correctly adjust the fabric 1 on the wall 16.

The excess portion 1b spring clip 9 ', is then cut to raz at the cutting line to obtain a clean finish.

After cutting, it is no longer possible to disassemble and reassemble the fabric 1 since there is not enough material to pull it out of the clip 9 ', and vice versa to stretch it correctly before reinsertion into the clip 9 ', It is therefore a hanging device for single use. In the embodiment previously described, the groove 3 of the arm 2 has a U-shaped section. It is of course obvious that the invention is not limited to this type of groove 3, and that the invention can be implemented with a smooth 2 having a V-shaped groove 3, or any other shape, the insert 9 having in any case a section of complementary shape.

Other techniques may be envisaged within the scope of the present invention.

In view of Figure 1, the fabric 1 is removable and can be remounted on the right side, thanks to the harpoon 8 which can enter and exit several times of the smooth 2, while the fabric 1 is not removable / remountable side left since there is the insert 9.

Consequently, as illustrated in FIG. 1, in the vicinity of a technical zone 15 in the wall 16 to be covered, the fabric 1 will be provided with removable / upward hooking means, of the harpoon type 8, for unhooking the fabric 1 in this area and intervene.

There is therefore a mix of hanging patterns of the fabric 1 on its perimeter.

In addition, this mixing is allowed regardless of the material of the fabric, that is to say that it is PVC, textile, or fiberglass, or in other words, that it has or does not have elasticity. Several possible examples of fabric design 1 are shown in Figures 2 to 4 in a non-limiting manner. In FIG. 2, to cover a rectangular wall 16 having a technical zone

15 in the center, the fabric 1 will be rectangular and have two consecutive sides with a removable / remountable hanging device 8, so as to open the fabric 1 diagonally and access the central technical area. The two opposite consecutive sides are naked, that is to say without hooking device, but with excess material 1b intended to enter the profiles 9 type inserts 9 or clips provided for this purpose 2. In this case, the profiles 9 have the same length as the smooth 2 in which they are inserted.

In FIG. 3, to cover a rectangular wall 16 having a technical zone 15 located on one side, the fabric 1 will be rectangular and will only need a section provided with a removable / remountable hook device 8 located on the side of the fabric. The section is dimensioned so as to sufficiently clear the web 1 to access the technical zone 15. The rest of the periphery of the fabric 1 will be bare, with excess material 1 b. In this case, the profile 9 present on the arm 2 hosting the removable portion will not have the same length as the smooth 2. It will only have the length on which the fabric 1 has excess material 1 b.

In FIG. 4, to cover an oval wall 16 having an off-center technical zone, the fabric 1 will be oval and will only need an arcuate section with a removable / retractable hook device 8 located in the vicinity of the technical zone. 15. The section is dimensioned so as to sufficiently clear the fabric 1 to access the technical area 15. The rest of the periphery of the fabric 1 will be bare, with excess material 1 b.

In all cases, in order to ensure sufficient tension of the fabric 1 over the entire wall 16 to be covered, its peripheral edge preferably comprises excess material 1b provided for insertion into inserts 9, and only the removable / remountable section will be equipped with a hook-type device harpoon 8 or rod. This section must be as small as possible, so as not to degrade the necessary tension of the fabric 1.

The frame 2 is always provided accordingly, with a rectangular or oval shape in the cases presented, and with inserts 9 or clips provided in the frame 2 in the locations where the fabric 1 has excess material 1b for a good adjustment and good tension of the fabric 1 during its first introduction. Advantageously, all canvas designs are possible regardless of the material of the fabric 1, that is to say that it is PVC, textile, fiberglass, or other, and that it is extensible or not.

Excess material 1b makes it possible to adjust the fabric, to compensate for the variations of the profile of the walls on which the healds are fixed, and to avoid the making of a fabric entirely made to measure, to the nearest centimeter. It therefore saves considerable time during the making of the fabric and when it is placed in position in the frame.

With respect to the above description, the optimal dimensional relationships for the parts of the invention, including variations in size, materials, shapes, function and modes of operation, assembly and use are considered apparent and obvious to those skilled in the art, and all relationships equivalent to what is illustrated in the drawings and what is described in the specification are intended to be included in the present invention.

Claims

claims

False-wall device for covering a wall or ceiling wall (16), comprising:

- a frame (2) forming a frame whose shape matches that of the wall (16);

- a canvas (1) stretched attached to the frame (2) so as to cover the wall (16);

characterized in that it comprises:

- Disassembly and reassembly means of at least one removable peripheral portion of the fabric (1) to access the wall (16);

- Adjustment means of the fabric (1) relative to the frame located on the periphery of the fabric (1) except for said removable peripheral section.

False wall device according to the preceding claim, characterized in that said disassembly and reassembly means consist of a removable hooking device provided between said removable peripheral portion of the fabric (1) and the frame (2).

False wall device according to the preceding claim, characterized in that said removable hanging device consists of a hooked edge (8) fixed on said removable peripheral portion of the fabric (1) and adapted to be inserted into the wall. inside a groove (3) provided for this purpose in the frame (2).

False wall device according to the preceding claim, characterized in that said hooked edge (8) consists of a harpoon (8) welded to said removable peripheral portion of the fabric (1), the fabric (1) being made of PVC.

False-wall device according to claim 3, characterized in that said hooked edge (8) consists of a rod sewn to said removable peripheral portion of the fabric (1), the fabric (1) being textile.

6. False wall device according to one of the preceding claims, characterized in that said means for adjusting the fabric (1) relative to the frame consist of: in a profile (9) adapted to fit removably in a groove (3) provided for this purpose in the frame (2), and

excess material (1b) provided on the periphery of the fabric (1) apart from said removable peripheral section, this excess material (1b) being devoid of hooking means and able to be fixed in said profile (9); ) then cut off.

7. False wall device according to the preceding claim, characterized in that said profile (9) comprises at least one deformable longitudinal lip (15) capable of pinching the periphery of the fabric (1) so as to fix it to the frame ( 2).

8. False wall device according to one of claims 6 to 7, characterized in that said profile (9) has a shape complementary to that of the groove (3) of the frame (2).

9. False wall device according to the preceding claim, characterized in that said profile (9) has a longitudinal groove (14) arranged to receive a shoulder (4) formed on one of the side walls (5), (6). ) of the groove (3) of the frame (2) in which it is intended to be fitted.

10. False-wall device according to claim 1, characterized in that said means for adjusting the fabric (1) relative to the frame consist of:

in an elastic clip (9 ') adapted to fit removably in a groove provided for this purpose in the frame, and

- Excess material provided on the periphery of the fabric (1) except for said removable peripheral section, the excess material being devoid of hooking means and adapted to be fixed in said clamp and cut.

1 1. False-wall device according to one of the preceding claims, characterized in that, when said frame forms a rectangle, said dismountability and remountability means are located on at least one side of the rectangle.

12. False wall device according to the preceding claim, characterized in that said dismountability and remountability means are preferably located on two consecutive sides of the rectangle.

13. False wall device according to one of the preceding claims, characterized in that it comprises lighting means disposed between the fabric (1) and the wall (16).

14. Use of a false light wall device according to any one of the preceding claims for the production of light boxes.

15. Canvas (1) for false-wall device, comprising a device for hanging removable and remountable (8) on at least one peripheral section, and having, over the rest of its periphery, the excess material (1 b) devoid of means of hanging.