Support device for bracing a wall system

Abstract

The present invention relates to a support device for bracing comprising a first element, the first element comprising a first plate, the first plate comprising a first face adapted to be fixedly mounted to a wall structure, and a second element, the second element comprising a second plate, the second plate comprising a third face adapted to be fixedly mounted to a first facing plate.

Description

Field of invention

[0001] The present invention relates to a wall system and more particularly to a drywall panel. State of the art

[0002] It is known to manufacture a drywall panel comprising a core and two facing plates, for example plaster, fixed on either side of the core. The core may be formed by a frame, for example a metal frame. The frame may include furring strips, studs, rails, angles and / or spacers. Each of these elements may be metallic. However, the manufacture of the various components of the frame results in high emissions of carbon dioxide into the atmosphere. It is desirable to reduce these emissions.

[0003] To this end, document EP3810867 describes a point spacer device suitable for separating a wall from a facing plate. The device comprises a plate adapted to be fixedly mounted on the facing plate and a body formed by a rod. A first end of the rod is mounted to the plate and a second end of the rod is mounted to the wall. Document EP3810867 also describes that a second plate can be mounted at the second end so that the device is suitable for spacing two facing plates. However, a drywall wall comprising a core formed by such devices has a mechanical strength too low to meet construction standards. Statement of the invention

[0004] An aim of the invention is to propose a solution for manufacturing a drywall panel core by reducing the carbon dioxide emissions caused by the manufacturing of a core formed by metal furring strips, while making it possible to increase the mechanical strength of the panel compared to a panel comprising known point spacer devices.

[0005] This aim is achieved within the framework of the present invention thanks to a support device for the bracing of a planar wall structure and a first facing plate of a wall system, the device comprising: a first element, the first element comprising a first plate having a diameter greater than 30 mm, the first plate comprising a first face adapted to be fixedly mounted to the planar wall structure, and comprising and a second face opposite the first face with respect to the first plate, a second element, the second element comprising a second plate having a diameter greater than 30 mm, the second plate comprising a third face adapted to be fixedly mounted to a first facing plate and comprising a fourth face opposite the third face with respect to the second plate, the first element also comprising a plurality of spacer rods, the spacer rods being distributed between the second face and the fourth face, each of the spacer rods extending along an axis perpendicular to the first face, at least one spacer rod being fixedly mounted to the first element, at the center of the second face (7), and extending from the second face towards the fourth face and being removably mounted to the second element.

[0006] The present invention is advantageously supplemented by the following characteristics, taken individually or in any of their technically possible combinations: each of the spacer rods has a first end mounted fixed to the second face, the first ends being distributed over the second face, a plurality of spacer rods are distributed over an edge of the second face, each of the spacer rods has a second end opposite the first end with respect to the spacer rod, at least one of the second ends, preferably all of the second ends, each forming a tip, the tip being formed by a narrowing of a diameter of the spacer rod over a length greater than 3 mm from the second end, the spacer rod mounted fixed to the center of the second face is the only spacer rod mounted fixed to the second element, the device has an angular stiffness in bending of the device measured between the first element and the second element greater than 10 6< N.mm.rad -1< and preferably greater than 2. 10 6< N.mm.rad -1< , the second face and the fourth face are separated by a length . L 1 , and spacer rods distributed on the edge of the second face have a second length L 2 strictly less than the first length L 1 , the device has a spacing between the second end of each of the spacer rods distributed on the edge of the second face and between the fourth face, the spacing being less than 1 cm, in particular less than 5 mm, or even less than 2 mm, device has a spacing between the second end of each of the spacer rods distributed on the edge of the second face and between the fourth face, the spacing being greater than 1 µm, in particular greater than 10 µm, or even greater than 100 µm. the device comprises a damping part formed by a first material, the first material having a loss factor greater than 0.2, in particular greater than 1, the damping part being arranged between the second end and the fourth face, the device comprises a spring arranged between a second end and between the fourth face,the device comprises removable fixing means between the fourth face and the second end of a spacing rod distributed on the edge of the second face, the first face and / or the third face are covered, at least partially, by a first layer of adhesive material, the device comprises a second layer formed by a second material, the second material having a loss factor greater than 0.1, in particular greater than 1, the second layer covering the first face and / or the third face, each of the spacing rods has a second end opposite the first end with respect to the spacing rod, the first end being arranged between the first face and a center of the spacing rod, and the second end being arranged between the third face and the center of the spacing rod. the device has an unlocked configuration and a locked configuration, in the unlocked configuration,the first element and the second element are separable from each other, in locked configuration, the first element is integral with the second element, ,

[0007] By solidarity, we understand that the first element can be fixed or move relative to the first element without being separable from it.

[0008] The permitted displacement of the first element relative to the second element makes it possible to absorb the sound waves received on a facing plate fixedly mounted on the device. in the locked configuration, the first element is fixedly mounted to the second element, in the locked configuration, the first element and the second element are configured to translate relative to each other along the axis perpendicular to the first face) between a position close to the first element and the second element and a position distant from the first element and the second element, the device comprising a return element in a position distant from the first element and the second element,

[0009] The close position of the first element and the second element ensures correct mechanical strength and limits the movement of the first element relative to the first element. The return element makes it possible to maintain, in the absence of external stress, for example a sound wave, the first element and the second element in a distant position. the return element can be the damping part.

[0010] Another aspect of the invention is a wall system comprising: a core extending along a main plane, the core being formed by a two-dimensional network of support devices according to one embodiment of the invention, a facing wall structure and a first facing plate, the structure and the first plate being arranged on either side of the core and each extending in a plane parallel to the main plane, the structure being fixedly mounted to a plurality of first faces of support devices and the first plate being fixedly mounted to a plurality of third faces of support devices.

[0011] Advantageously, the planar wall structure is a second facing plate, the system forming a drywall panel.

[0012] Another aspect of the invention is a method of manufacturing a wall system according to an embodiment of the invention, in which the following steps are carried out: a) fixedly mounting a plurality of first elements to a planar wall structure, b) mounting a plurality of second elements, each second element being mounted to a first element, c) mounting a first facing plate to a plurality of second elements. Description of figures

[0013] Other characteristics, aims and advantages of the invention will emerge from the following description, which is purely illustrative and non-limiting, and which must be read in conjunction with the appended drawings in which: [ Fig. 1 ] - there figure 1 schematically illustrates a first element of a device according to an embodiment of the invention, [ Fig.2 ] - there figure 2schematically illustrates a second element of a device according to an embodiment of the invention, [ Fig.3 ] - there figure 3 schematically illustrates a device according to one embodiment of the invention, [ Fig.4 ] - there figure 4 schematically illustrates a device according to one embodiment of the invention, [ Fig.5 ] - there Figure 5 schematically illustrates a section of a device according to an embodiment of the invention, [ Fig.6 ] - there figure 6 schematically illustrates a section of a wall system according to one embodiment of the invention, [ Fig.7 ] - there figure 7 schematically illustrates a method of manufacturing a wall system according to one embodiment of the invention, [ Fig.8 ] - there figure 8 schematically illustrates a section of a device according to an embodiment of the invention, [ Fig.9 ] - there figure 9schematically illustrates a section of a device according to an embodiment of the invention, [ Fig. 10 ] - there figure 10 schematically illustrates a section of a device according to an embodiment of the invention, [ Fig. 11 ] - there figure 1 1 schematically illustrates a section of a device according to an embodiment of the invention, [ Fig. 12 ] - there figure 12 schematically illustrates a section of a device according to an embodiment of the invention, [ Fig. 13 ] - there figure 13 schematically illustrates the application of a moment to a device according to an embodiment of the invention, [ Fig. 14 ] - there figure 14 illustrates a displacement field of a device according to an embodiment of the invention during bending of the device, calculated by the finite element method, [ Fig. 15 ] - there figure 15illustrates a variation in the bending stiffness of a device according to an embodiment of the invention with the direction in which a moment is applied.

[0014] Throughout the figures, similar elements have identical references. Definitions

[0015] A stiffness, in particular an angular stiffness of a device between two elements, two faces or two plates, can be calculated in a known manner using a computer program implementing a numerical mechanical simulation by the finite element method. In particular, such a simulation can be implemented by predetermining the geometry of the device, its material(s), and the boundary conditions applied to the device. The document Guigou-Carter et al. (Guigou-Carter, C., Foret, R., Igeleke, A., & Bailhache, S., 2012, April, Characterization of metallic studs used in gypsum board single frame walls, in Acoustics 2012) describes a method for measuring a compressive stiffness of drywall panels comprising bracing devices using finite element modeling. This method can also be applied for a support device for bracing a drywall panel.

[0016] In this document, the term “ stiffness » a stiffness measured for an excitation frequency of the element whose stiffness is measured between 5 Hz and 30 Hz. Indeed, this frequency range makes it possible to measure a stiffness independent of the dimensions of the system and the boundary conditions applied at the edge of the system.

[0017] By "we mean shear stiffness » of a device the stiffness measured between the first plate and the second plate by applying to at least one of the two plates a force perpendicular to the main axis of the spacer rods.

[0018] By "we mean loss factor η » of a material, the material having a complex Young's modulus, the ratio between the imaginary part E" of the Young's modulus of the material and the real part E' of the Young's modulus of the material. The loss factor η of a material is defined by the international standard ISO 18437-2:2005 ( Mechanical vibration and shock - Characterization of the dynamic mechanical properties of visco-elastic materials - Part 2: Resonance method, part 3.2). Preferably, the loss factor η can be set for a predetermined frequency. In this document, the term " a material has a first loss factor η greater than a value » that the material presents a first loss factor η greater than the value for a frequency included in a range of audible frequencies, that is to say in a range of frequencies between 20 Hz inclusive and 20,000 Hz inclusive, and preferably between 20 Hz inclusive and 10,000 Hz inclusive. Detailed description of the invention

[0019] General architecture of support device 1 And of the wall system 2

[0020] In reference to the figure 1 , to the figure 2 , to the figure 3 , to the figure 4 and to the Figure 5 , one aspect of the invention is a support device 1 for the bracing of a planar wall structure 6 and a first facing plate 11 of a wall system 2.

[0021] In reference to the figure 1, the device 1 comprises a first element 3. The first element 3 comprises a first plate 4. The first plate 4 has a diameter greater than 30 mm, in particular greater than 45 mm and preferably greater than 60 mm. The first plate 4 may have a circular shape so as to form a disc. The plate 4 comprises a first face 5 adapted to be mounted on a planar wall structure 6. The plate 4 also comprises a second face 7. The second face 7 is opposite the first face 5 with respect to the first plate 4.

[0022] In reference to the figure 2, the device 1 comprises a second element 8. The second element 8 comprises a second plate 9. The second plate 9 has a diameter greater than 30 mm, in particular greater than 45 mm and preferably greater than 60 mm. The second plate 9 comprises a third face 10 adapted to be fixedly mounted to a first facing plate 11. The second plate 9 comprises a fourth face 12 opposite the third face 10 relative to the second plate 9.

[0023] The device comprises a plurality of spacer rods 13. The spacer rods 13 are distributed between the second face 7 and the fourth face 12. Each of the spacer rods 13 extends along an axis perpendicular to the first face 5. At least one spacer rod 13 is fixedly mounted to the first element 3. The rod 13 extends from the second face 7 to the fourth face 12. The rod 13 is removably fixedly mounted to the second element 8. Thus, due to the presence of a plurality of spacer rods 13 in the device 1, it is possible to increase the angular stiffness of the device 1 with respect to known devices while limiting the quantity of material necessary for the manufacture of the device 1. This makes it possible to increase the compressive stiffness of the system 2 with respect to a panel comprising known point support devices.

[0024] Each of the spacer rods 13 may have a first end 14 fixedly mounted to the second face 7, the first ends 14 being distributed over the second face 7. Thus, it is possible to install an insulating gasket in the system 2 after the installation of the first element 3.

[0025] The first element 3 may comprise a plurality of spacer rods 13. Preferably, the first element 3 comprises at least three spacer rods 13. Each of the spacer rods 13 may extend from the second face 7 along an axis perpendicular to the first face 5. The device 1 may comprise means for removably attaching at least one spacer rod 13 to the second element 8.

[0026] The device 1 may have an angular stiffness in bending, measured between the first element 3 and the second element 8, greater than 10 6< N.mm.rad -1< and preferably greater than 2. 10 6< N.mm.rad -1< . Thus, the device 1 can be used to manufacture a wall system 2 meeting the standards of the construction field.

[0027] The first end 14 may be arranged between the first face 5 and a center of the spacer rod 13. The second end 15 may be arranged between the third face 10 and the center of the spacer rod 13. Thus, the first face 5 and the third face 10 may be flush, which allows them to be arranged in contact respectively with the planar wall structure 6 and the first facing plate 11.

[0028] The planar wall structure 6 may be selected from a wall, a second facing board, for example a second plasterboard facing board, a floor, and a ceiling. In the case where the structure 6 is a second facing board, the system 2 forms a drywall panel. The structure 6 may also be made of concrete. First element 3

[0029] In reference to the figure 1, a plurality of spacer rods 13 may be distributed over the edge of the second face 7 of the first element 3. Thus, the angular stiffness of the device 1 is maximized with respect to the quantity of material used for its manufacture. The device 1 may comprise at least three spacer rods 13 distributed over the edge of the second face 7. In particular, between three and six spacer rods 13 are distributed over the edge of the second face 7. The spacer rods 13 distributed over the edge of the second face 7 may be arranged at a constant pitch along a circumference of the edge of the second face 7. Thus, the angular stiffness in bending of the device 1 may be almost constant by varying the point at which a force is applied along the circumference of one of the two plates. One of the spacer rods 13 may be fixedly mounted at the center of the second face 7.The spacer rod 13 mounted in the center of the second face 7 may have a length between 3 cm and 20 cm. It may have a diameter between 5 mm and 2 cm, between 7 mm and 1.5 cm.

[0030] A spacer rod 13 has a second end 15 opposite the first end 14 with respect to the spacer rod 13. At least one of the second ends 15, preferably all of the second ends 15, may each form a point. The point may be formed by narrowing a diameter of the spacer rod 13 over a length greater than 3 mm from the second end 15. Thus, it is possible to skewer a plate of acoustically or thermally insulating material onto the first element 3, before mounting the second element 8 to the first element 3 during the manufacture of a wall system 2. The diameter of the end forming a point may be less than 50% of the maximum diameter of the rod, preferably less than 35%, more preferably less than 10%. Second element 8

[0031] The second element 8 comprises the second plate 9. The second element 8 may also comprise one or more spacer rods 13 fixedly mounted on the fourth face 12. These spacer rods 13 may have an end configured to be removably mounted on the second face 7. Removable fixing means

[0032] The device 1 comprises means for removably fixing at least one spacer rod 13 to the second element 8. With reference to the figure 1 , to the figure 2 , to the figure 3 and to the figure 4, the spacer rod 13 mounted fixedly in the center of the second face 7 may be the only spacer rod 13 mounted fixedly to the second element 8. Thus, it is possible to facilitate the removable mounting of the first element 3 to the second element 8, while limiting the number of spacer rods 13 to be mounted fixedly to the second element 8, and while maximizing the shear stiffness of the device 1. In particular, this configuration makes it possible to simplify the implementation of fixing means requiring the rotation of the first element 3 relative to the second element 8. The removable fixing means allow the first element 3 and the second element 8 to take a locked configuration and an unlocked configuration. In the unlocked configuration, the first element 3 and the second element 8 are separable from each other. In the locked configuration, the first element 3 is integral with the second element 8.

[0033] A removable fastening means may be a clip, a clamp, a latch, a set of ribs and / or an assembly formed by a screw and a thread.

[0034] A second end 15 of a spacer rod 13 may be adapted to be engaged in an opening formed in the second plate 9.

[0035] A spacer rod 13 may have at least one primary rib 23 formed on the periphery of a section of the spacer rod 13. The first element 3 and / or the second element 8 may comprise a mounting opening. The mounting opening may have at least one secondary rib 24 projecting towards the inside of the opening. The secondary rib 24 may be adapted to cooperate with the primary rib 23 so as to block the spacer rod 13 in translation along its main axis. With reference to the figure 1 and the figure 2, the primary rib 23 may be arranged at a first end of a spacing rod 13. The mounting opening may be formed by a sheath 25 having at one of its ends the secondary rib 24. The mounting of the device 1 may comprise a step of mounting the sheath 25 around a spacing rod 13, then a step of bringing the primary rib 23 and the secondary rib 24 into cooperation so as to block the spacing rod 13 in translation along its main axis. The primary rib 23 and the secondary rib 24 are removable fixing means.

[0036] The device 1 may comprise removable fixing means between the fourth face 12 and the second end 15 of a spacing rod 13 distributed over the edge of the second face 7. Thus, it is possible to increase the shear stiffness of the device 1. System 2 wall

[0037] In reference to the figure 6, one aspect of the invention is a wall system 2. The wall system 2 comprises a core 20. The core 20 extends along a main plane 22. The core 20 is formed by a two-dimensional network of devices 1.

[0038] The system 2 comprises a planar wall structure 6 and a first facing plate 11. The structure 6 and the first plate 11 are arranged on either side of the core 20 and each extend in a plane parallel to the main plane 22. The structure 6 is fixedly mounted to a plurality of first faces 5 of support devices 1. The first plate 11 is fixedly mounted to a plurality of third faces 10 of support devices 1.

[0039] In the case where structure 6 is a second facing plate, system 2 is a drywall panel.

[0040] All of the first faces 5 may be mounted to the planar wall structure 6. All of the third faces 10 may be mounted to the first facing plate 11. Alternatively, a device 1 may comprise one of the faces selected from the first face 5 and the third face 10 fixedly mounted to a facing plate and the other of the faces selected from the first face 5 and the third face 10 free and arranged in contact with the other of the facing plates. Thus, it is possible to allow deformation of the facing plate towards the outside, which makes it possible to dissipate an acoustic wave, while preventing deformation of the facing plate towards the inside, which allows the panel to have sufficient mechanical stiffness in compression to meet the standards of the construction field.

[0041] The system 2 may comprise a spacer insert. The spacer insert may be interposed between the first plate 4 and the second plate 7. The spacer insert may comprise one or more layers of thermally and / or acoustically insulating material. The material may be chosen from foam, mineral wool and vegetable wool. The spacer insert may be skewered onto the spacer rods 13.

[0042] In reference to the figure 7, another aspect of the invention is a method of manufacturing the wall system 2. The method comprises a step 701 of fixedly mounting a plurality of first elements 8 to a planar wall structure 6. The method comprises a subsequent step 702 of mounting a plurality of second elements 3, each second element 3 being mounted to a first element 8. The method comprises a subsequent step 703 of mounting a first facing plate 11 to a plurality of second elements 3. The first plate 11 may be mounted to only a portion of the third faces 10. Support device 1 with non-linear angular stiffness

[0043] In reference to the figure 8 , to the figure 9 , to the figure 10 and to the figure 11 , the second face 7 and the fourth face 12 can be separated by a length L 1 The spacer rod(s) 13 distributed over the edge of the second face 7 may have a second length L 2 strictly less than the first length L 1 . Thus, the device 1 can have two distinct angular stiffnesses: a first angular stiffness k θ1 and a second angular stiffness k θ2 . Preferably, in this configuration, the spacer rod 13 mounted fixedly in the center of the second face 7 is the only spacer rod 13 mounted fixedly to the second element 8. The spacing may be less than 1 cm, in particular less than 5 mm and preferably less than 2 mm.

[0044] In reference to the figure 9 , the first angular stiffness k θ1is presented by the device 1 during a bending deformation over a first range of angles between 0° and a limit angle α lim . Indeed, in this angular range, there is no contact between the fourth face 12 and the second end 15 of a spacer rod 13. The second plate 9 is in movement in the space separating the fourth face 12 and the second end 15. The first angular stiffness k θ1 presented by the device 1 in the first range of angles may be strictly less than 10 5< N.mm.rad -1< , in particular strictly less than 5.10 4< N.mm.rad -1< and preferably strictly less than 10 4< N.mm.rad -1< . The limit angle α lim may be less than 0.35 rad, in particular less than 0.17 rad and preferably less than 0.09 rad.

[0045] During a bending deformation in a second range of angles strictly greater than the limit angle α lim , the device 1 has a second angular stiffness k θ2 strictly greater than the first angular stiffness k θ1 . Indeed, the second plate 9 is, in this configuration, in contact with the spacer rod 13. The second angular stiffness k θ2 presented by the device 1 in the second range of angles may be greater than 10 6< N.mm.rad -1< and preferably greater than 2. 10 6< N.mm.rad -1< .

[0046] Thus, the device 1 has a non-linear and increasing angular stiffness with increasing amplitude of the applied deformation. When deformation of an amplitude that can be driven by an acoustic wave, due to a first angular stiffness significantly smaller than the stiffnesses of known devices, the energy of an acoustic wave incident on the first wall 41 can be dissipated by the first facing plate 11, and the wave is thus damped. This makes it possible to increase the acoustic insulation of a wall system 2. Furthermore, for larger deformations, the device 1 gives the system 2 sufficient stiffness for its use in the construction field.

[0047] The device 1 may comprise the primary rib 23 of the first element 3 and the secondary rib 24 of the second element 8, the primary rib 23 cooperating with the secondary rib 24 to allow a locked configuration of the first element 3 and the second element 8.

[0048] In the locked configuration, the first element 3 can be fixedly mounted to the second element 8. The secondary rib 24 can be adapted to cooperate with the primary rib 23 so as to block the spacer rod 13 in translation along its main axis.

[0049] Alternatively, in the locked configuration, the first element 3. The secondary rib 24 can be adapted to cooperate with the primary rib 23 so as to allow translational movement of the spacing rod 13 along its main axis while maintaining the locked configuration in which the first element 3 is integral with the second element.

[0050] In reference to the figure 10 , the device 1 may comprise a damping part 16 formed by a first material. The first material has a loss factor η greater than 0.2, in particular greater than 1. The damping part is arranged between the second end 15 and the fourth face 12. Thus, a bending of the device 1 is damped in an angular range between 0 and the limit angle α lim. This makes it possible to dampen an acoustic wave incident on the wall system 2. Alternatively, the device 1 may comprise a spring arranged between a second end 15 and between the fourth face 12.

[0051] In the locked configuration allowing translation of the first element 3 relative to the second element 8, the damping part 16 can be a return element in a position remote from the first element 3 and the second element 8.

[0052] The spacer and / or the damping part 16 and / or the spring may be arranged at other locations resulting in a similar effect: the spacer may be arranged between the second face 7 and a free end of a spacer rod 13 mounted to the second plate 9, or between two aligned spacer rods.

[0053] There figure 11 differs from figures 8 And 10 in that the spacer rod 13 is hollow and the sheath 25 of the figures 8 And 10 is received in the spacer rod 13 fixedly mounted in the center of the first element 3. First side 5 and third side 10

[0054] The first face 5 and the third face 10 are each adapted to be mounted to a facing plate, respectively to the planar wall structure 6 and to the first facing plate 11. The first face 5 and the third face 10 can be mounted respectively to the planar wall structure 6 and to the first facing plate 11 by screwing and / or gluing.

[0055] The first face 5 and / or the third face 10 may be textured. By " textured", it is understood that the face in question has a relief, composed of a succession of peaks and valleys. This relief can be periodic or random. The texturing of the surface can also have a plurality of different reliefs, distributed regularly or randomly. For example, the first face 5 and / or the third face 10 can be provided with concentric and / or honeycomb ribs and / or grooves. The texturing of the first face 5 and / or the third face 10 makes it possible to improve the adhesion of a fixing screw to the facing panel, compared to a smooth surface. In the case of fixing by glue, a textured surface increases the contact surface of the glue with the plate.

[0056] In reference to the figure 12, the first face 5 and / or the third face 10 may be covered, at least partially, by a first layer 18 of adhesive material. Thus, it is possible to simplify the fixed mounting of the device 1 to one or more walls with regard to the use of screwing.

[0057] The device 1 may comprise a second layer 19 formed by a second material. The second material may have a loss factor greater than 0.1, in particular greater than 1. The second layer 19 may cover the first face 5 and / or the third face 10. Thus, the device 1 has a non-linear and increasing compression stiffness when the amplitude of the applied deformation increases, which makes it possible to dissipate an acoustic wave incident to the system 2. Results

[0058] In reference to the figure 13 and to the figure 14, it is possible to calculate the stresses and / or displacements of the device 1 by the finite element method. The figure 13 schematically illustrates the application of a moment to the second plate 9. The moment may be applied, for example, by a pair of forces of opposite signs, the forces being applied to two opposite points on the edge of the second plate 9. It is possible to calculate the stiffness by varying the orientation of the axis around which the moment is applied. This variation is calculated as a function of an angle θ measured between a reference direction and the line perpendicular to the axis around which the moment is applied. The figure 14 illustrates the distribution of movements in device 1.

[0059] In reference to the figure 15, the bending stiffness of the device 1 can be calculated by varying the angle θ. Curve (a) illustrates the bending angular stiffness of a known device comprising a spacer rod and two plates. Curve (b) illustrates the bending angular stiffness of a device according to an embodiment of the invention.

Claims

1. Support device (1) for the bracing of a planar wall structure (6) and a first facing plate (11) of a wall system (2), the device (1) comprising: - a first element (3), the first element (3) comprising a first plate (4) having a diameter greater than 30 mm, the first plate (4) comprising a first face (5) adapted to be fixedly mounted to the planar wall structure (6), and comprising and a second face (7) opposite the first face (5) with respect to the first plate (4), - a second element (8), the second element (8) comprising a second plate (9) having a diameter greater than 30 mm, the second plate comprising a third face (10) adapted to be fixedly mounted to a first facing plate (11) and comprising a fourth face (12) opposite the third face (10) with respect to the second plate (9), the device (1) being characterized in that: the first element (3) also comprises a plurality of spacer rods (13), the spacer rods (13) being distributed between the second face (7) and the fourth face (12), each of the spacer rods (13) extending along an axis perpendicular to the first face (5), at least one spacer rod (13) being fixedly mounted to the first element (3), at the center of the second face (7), and extending from the second face (7) towards the fourth face (12) and being removably mounted to the second element (8).

2. Device (1) according to claim 1, in which each of the spacer rods (13) has a first end (14) fixedly mounted on the second face (7), the first ends (14) being distributed over the second face (7).

3. Device (1) according to one of the preceding claims, in which a plurality of spacer rods (13) are distributed on an edge of the second face (7).

4. Device (1) according to one of the preceding claims, in which each of the spacer rods (13) has a second end (15) opposite the first end (14) relative to the spacer rod (13), at least one of the second ends (15), preferably all of the second ends (15), each forming a point, the point being formed by a narrowing of a diameter of the spacer rod (13) over a length greater than 3 mm from the second end (15).

5. Device (1) according to one of the preceding claims, in which the spacer rod (13) fixedly mounted in the center of the second face (7) is the only spacer rod (13) fixedly mounted to the second element (8).

6. Device (1) according to one of the preceding claims, having an angular stiffness in bending of the device (1) measured between the first element (3) and the second element (8) greater than 10 6 N.mm.rad -1and preferably greater than 2. 10 6 N.mm.rad -1 .

7. Device (1) according to one of claims 3 to 6, in which the second face (7) and the fourth face (12) are separated by a length L1 , and in which spacer rods (13) distributed on the edge of the second face (7) have a second length L2 strictly less than the first length L1 .

8. Device (1) according to the preceding claim, the device (1) having a spacing between the second end (15) of each of the spacing rods (13) distributed on the edge of the second face (7) and between the fourth face (12), the spacing being less than 1 cm, in particular less than 5 mm, or even less than 2 mm.

9. Device (1) according to the preceding claim, comprising a damping part (16) formed by a first material, the first material having a loss factor greater than 0.2, in particular greater than 1, the damping part being arranged between the second end (15) and the fourth face (12).

10. Device (1) according to claim 8 or 9, comprising a spring arranged between a second end (15) and between the fourth face (12).

11. Device (1) according to claim 3, comprising removable fixing means between the fourth face (12) and the second end (15) of a spacing rod (13) distributed on the edge of the second face (7).

12. Device (1) according to one of the preceding claims, in which the first face (5) and / or the third face (10) are covered, at least partially, by a first layer (18) of adhesive material.

13. Device (1) according to one of the preceding claims, comprising a second layer (19) formed by a second material, the second material having a loss factor greater than 0.1, in particular greater than 1, the second layer (19) covering the first face (5) and / or the third face (10).

14. Device (1) according to one of the preceding claims, wherein each of the spacer rods (13) has a second end (15) opposite the first end (14) with respect to the spacer rod (13), the first end (14) being arranged between the first face (5) and a center of the spacer rod (13), and the second end (15) being arranged between the third face (10) and the center of the spacer rod (13).

15. Device (1) according to any one of the preceding claims, the device (1) having an unlocked configuration and a locked configuration, in the unlocked configuration, the first element (3) and the second element (8) are separable from each other, in the locked configuration, the first element (3) is integral with the second element (8).

16. Device (1) according to claim 15, in which, in the locked configuration, the first element (3) is fixedly mounted to the second element (8).

17. Device (1) according to claim 15, wherein, in the locked configuration, the first element (3) and the second element (8) are configured to translate relative to each other along the axis perpendicular to the first face (5) between a position close to the first element (3) and the second element (8) and a position distant from the first element (3) and the second element (8), the device (1) comprising a return element in a position distant from the first element (3) and the second element (8).

18. Wall system (2) comprising: - a core (20) extending along a main plane (22), the core (20) being formed by a two-dimensional network of support devices (1) according to one of claims 1 to 17, - a wall facing structure (6) and a first facing plate (11), the structure (6) and the first plate (11) being arranged on either side of the core (20) and each extending in a plane parallel to the main plane (22), the structure (6) being fixedly mounted to a plurality of first faces (5) of support devices (1) and the first plate (11) being fixedly mounted to a plurality of third faces (10) of support devices (1).

19. Wall system (2) according to the preceding claim, in which the planar wall structure (6) is a second facing plate, the system (2) forming a drywall panel.

20. Method for manufacturing a wall system (2) according to claim 18 or 19, in which the following steps are carried out: a) fixed mounting of a plurality of first elements (8) to a planar wall structure (6), b) mounting of a plurality of second elements (3), each second element (3) being mounted to a first element (8), c) mounting of a first facing plate (11) to a plurality of second elements (3).

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