Adjustable frame assembly

Abstract

The invention relates to an adjustable structural assembly for wall lining. It comprises: at least one profiled metal upright (16) having a flat base (20) and two flanges (22, 24) facing each other; at least one intermediate support (18) having a rear end (30) connected to a wall (14) to be lined and a front end (32) connected to said upright (16), in order to hold said upright against said wall. Said front end (32) comprises a tongue (34) and a first front portion (38) erected on said tongue over a length greater than said given height, said first front portion (38) extending by a second front portion (40) opposite said tongue towards said rear end (30). Figure to be published with the abstract: Fig. 1

Description

Title of the invention: Adjustable structure assembly

[0001] The present invention relates to an adjustable structural assembly for wall lining.

[0002] One envisaged field of application is in particular that of lining the interior walls in order to insulate them thermally.

[0003] To do this, a double wall is installed opposite the wall wall, leaving a space between the two, and the space is filled with an insulating material.

[0004] This double wall, usually made of plasterboard, is backed by a plurality of metal profiles, which are installed along the wall.

[0005] The metal profiles used in such circumstances have two parallel flanges extended by a free edge, the two free edges being curved towards each other. They are then installed vertically, one after the other, at a distance from the wall, and are held in a fixed position, notably by means of intermediate supports. Generally, the two opposite ends of the profiles are engaged in two parallel rails, mounted respectively in the floor wall and in the opposite ceiling wall. The intermediate supports also serve to limit the possibility of deflection of the profiles.

[0006] These intermediate supports are adjustable so as to be able to support and adjust the metal profiles vertically along irregular wall surfaces.

[0007] Each intermediate support comprises a threaded rod anchored in the wall and an adjustable anchoring device mounted on the threaded rod. The profile is brought into position, with its two flanges oriented towards the wall, to cover the anchoring device.

[0008] The latter then engages under the two free edges. The anchoring device can then be adjusted on the threaded rod in order to adjust the profile vertically.

[0009] The type of profile used has a standard cross-section adapted to the height of the standard ceilings, which generally do not exceed 2.50 m. Therefore, other types of profiles, longer and with a greater second moment of area, are necessary for installing double walls exceeding 3 m, for example. In such circumstances, the usual intermediate supports are no longer suitable.

[0010] Moreover, the usual intermediate supports are relatively complex and therefore costly.

[0011] Also, a problem which arises and which the present invention aims to solve is to provide a less expensive set of adjustable structure which can be implemented for high double walls.

[0012] To this end, an adjustable wall lining structure is proposed, comprising: at least one profiled metal upright having a flat bottom and two wings of a given height erected opposite each other with respect to said flat bottom; and, at least one intermediate support having a rear end adapted to be connected to a wall to be lined and an opposite front end adapted to be connected to said at least one upright, in order to be able to maintain said at least one upright in a vertical direction and in support against said wall.

[0013] Said front end comprises a tongue and a first front portion erected on said tongue over a length greater than said given height, said first front portion extending by a second front portion opposite said tongue towards said rear end; and said tongue is adapted to be mounted in a fixed position against said bottom of said at least one metal upright between said two wings, and between a position close to one of said two wings, while said one of said two wings is away from said rear end and a position away from said one of said two wings, while said one of said two wings is close to said rear end.

[0014] Thus, a feature of the invention lies in the use of flat-bottomed U-shaped profiles and intermediate supports, allowing the width of the flat bottom to be used to connect them. The profile is oriented so that its flat bottom is substantially perpendicular to the wall, while one of the flanges extends opposite the wall. The tongue can then be connected to the bottom, while the second anterior portion of the front end of the intermediate support spans the flange extending opposite the wall to reach the rear end of the intermediate support.

[0015] The tongue has a width considerably less than the width of the flat bottom. The first anterior portion extends perpendicularly from one edge of the tongue, over a length greater than or equal to the height of the flange. Therefore, the tongues can be secured to the bottom in two extreme positions: against the flange of the profile facing the wall or against the opposite flange, and also in a plurality of positions between these two extremes.

[0016] Furthermore, the second anterior portion can be joined to the posterior end. The posterior end of the intermediate support is fixed to the wall. Thus, after the intermediate support has been installed on the wall using its posterior end, the metal post can be adjusted so that the tongue is flush against its base. The tongue can then be connected to the base of the profile in a position where the latter extends vertically.

[0017] According to the invention, said tongue advantageously has an orifice to be able to receive a screw adapted to be screwed through said base.

[0018] Thus, the profiled metal upright is held vertically, while the tongue of the intermediate support is pressed against the bottom of the upright, between the two flanges. It is then easy to insert a self-tapping screw through the hole in the tongue to then force-pierce the bottom of the profile. The tongue then becomes fully fixed to the profile, and the profile is then fixed to the wall.

[0019] Such intermediate support is inexpensive. And moreover, it is easy to implement, as will be explained in more detail later in the description.

[0020] Preferably, and in accordance with the invention, said second anterior portion extends back from said first anterior portion. In other words, the tongue and the second anterior portion are substantially parallel to each other, while the first anterior portion is substantially perpendicular to the tongue and the second anterior portion. Since the first anterior portion has a length greater than the height of the wing, the second anterior portion extends beyond the wing, towards the rear end of the intermediate support.

[0021] According to a first embodiment of the invention, said rear end comprises a first mounting plate connected substantially perpendicularly to said second front portion. Thus, the first mounting plate extends the second front portion of the front end in a direction substantially perpendicular to the latter. The first mounting plate is adapted to be fixed to the wall, for example, by means of screws.

[0022] According to this first variant, and in accordance with a first embodiment, the first mounting plate extends in the opposite direction to the first front portion. According to a second embodiment, the first mounting plate extends opposite the first front portion.

[0023] This first embodiment of the invention is particularly suitable when the profiled metal uprights are installed close to the wall.

[0024] According to a second embodiment of the invention, said rear end comprises a second mounting plate and a first rear portion erected on said second mounting plate, and said first rear portion is connected to said second front portion by a second rear portion, while said first rear portion and said tongue are substantially coplanar. Such an intermediate support is particularly suitable when profiled metal studs are installed at a certain distance from the wall.

[0025] Preferably, and according to the invention, said intermediate support is formed from a single piece of metal. It is obtained, for example, by a stamping and deep-drawing process on a metal strip. In other words, the intermediate support is obtained at a very advantageous cost.

[0026] According to a second embodiment of the invention, said front end and said rear end are adjustable relative to each other. Therefore, in addition to the possible adjustment of the tongue relative to the flat bottom of the profile, a second adjustment option is offered by providing a front end that is adjustable relative to the rear end.

[0027] Such a configuration is perfectly suited to very irregular wall surfaces.

[0028] Thus, according to a first embodiment in accordance with this second variant, said front end comprises a front flat portion having two first lateral edges arranged opposite each other to form a slide, while said rear end comprises a rear flat portion adapted to be applied against said front flat portion between said edges to form a slide, and said two flat portions are adapted to be held in a fixed position relative to each other by a transverse screw. The two flat portions extend substantially perpendicularly to the wall. Thus, during the adjustment of the front end relative to the rear end, the two flat portions slide into each other in order to adjust the distance between the tongue and the rear end.Once this distance is determined, the transverse screw is forcibly engaged through the two flat parts to hold them in a fixed position relative to each other.

[0029] Preferably, and according to the invention, said front flat portion has a median oblong recess parallel to said edges, said transverse screw being adapted to be screwed through said rear flat portion and through said median oblong recess. The median oblong recess, forming a median slot, facilitates penetration through the two flat portions. Advantageously, the rear flat portion has an opening through which the transverse screw is inserted. The relative position of the two flat portions is then adjusted, and the transverse screw is rotated through the slot to secure the two flat portions together. The slot thus constitutes a "pre-tapped hole" offering an infinite number of positioning possibilities and facilitating screwing.

[0030] According to the invention, said rear end preferably comprises a third mounting plate, and said rear flat portion extends at right angles to said third mounting plate. Thus, the third mounting plate is applied flat against the wall, while the flat portion extends perpendicularly to this wall. In this way, the front flat portion is able to cooperate with the rear flat portion in a direction substantially perpendicular to the wall, as will be explained in more detail below.

[0031] Furthermore, according to this second embodiment, said front end also comprises a third front portion forming a bracket and extending opposite said first front portion. Such an intermediate support is intended to be engaged on an adjustable anchoring device mounted on a threaded rod, which is anchored in the wall. Thanks to the adjustable anchoring device, a second adjustment option is thus provided.

[0032] Furthermore, according to the invention, said at least one profiled metal upright further comprises two additional flanges positioned opposite each other with respect to said flat bottom, respectively opposite said two flanges with respect to said flat bottom. In other words, the profiled metal upright has an H-shaped cross-section. This profile is obtained either by folding a single metal strip or by joining two U-shaped metal profiles together.

[0033] This H-shaped profile, obtained by folding a single metal strip, advantageously allows two profiles to be axially joined together while maintaining substantially the same cross-section. Thanks to this type of profile, the length of the uprights can be easily adjusted according to the ceiling height.

[0034] Other features and advantages of the invention will become apparent from the following description of particular embodiments of the invention, given by way of example but not limitation, with reference to the accompanying drawings in which:

[0035] [Fig.l] is a partial schematic view of a structure assembly according to the invention in a first embodiment and in cross-section;

[0036] [Fig.2] is a partial schematic perspective view of the entire structure illustrated in [Fig.1];

[0037] [Fig.3] is a schematic perspective view of an element of a structural assembly according to the invention according to a second embodiment;

[0038] [Fig.4] is a schematic perspective view of an element of a structural assembly according to the invention according to a third embodiment;

[0039] [Fig.5] is a schematic perspective view of another element of the structure assembly according to the third embodiment of the invention;

[0040] [Fig.6] is a schematic perspective view illustrating the cooperation of the object of [Fig.4] and [Fig.5];

[0041] [Fig.7] is a schematic perspective view of the element shown in [Fig.4] according to another embodiment;

[0042] [Fig.8] is a schematic perspective view of an element of a structural assembly according to the invention in a fourth embodiment; and,

[0043] [Fig.9] is a schematic perspective view of a structure assembly according to the invention including the object of [Fig.8].

[0044] Fig. 1 shows in cross-section an adjustable structure assembly 10 according to the invention and according to a first embodiment.

[0045] Thus, such a structural assembly makes it possible to form a support for a double wall 12 against a wall 14. The double wall 12 is a plasterboard, and it is kept away from the wall 14 so as to be able to fill the space thus formed with glass wool or any other insulation.

[0046] In order to keep the double wall 12 away from the wall wall 14, a profiled metal upright 16 is used which extends vertically from floor to ceiling along the wall wall 14, and an intermediate support 18.

[0047] A single profiled metal stud 16 cooperating with a single intermediate support 18 will be described here, according to a first embodiment. However, it is understood that a plurality of vertical metal studs are used to receive plasterboard panels and that at least one intermediate support 18 is installed for each metal stud.

[0048] The profiled metal upright 16 is H-shaped. It thus comprises a flat base 20, two first flanges 22, 24 facing each other, and two second flanges 26, 28 respectively opposite the first two 22, 24, also facing each other. The flanges 22, 24, 26, 28 have a predetermined height h.

[0049] The H-shaped metal profile 16 is preferably obtained by stamping a metal strip with a thickness of, for example, between 0.8 mm and 2 mm. According to another embodiment, the metal profile 16 is formed of two U-shaped metal profiles placed back to back.

[0050] Thus, the profiled metal upright 16 is held in a fixed position at a distance from the wall 14 by means of the intermediate support 18.

[0051] The intermediate support 18 has a rear end 30 integral with the wall panel 14 and an anterior end 32 adapted to be connected to the metal upright 16.

[0052] The front end 32 includes a free tab 34 with a length less than the width of the bottom 20 of the metal upright 16. Preferably, the tab 34 has a length less than half the width of the bottom 20. For example, the tab 34 has a length substantially equal to one-third of the width of the bottom 20.

[0053] On one 36 of its edges, the tongue 34 is extended back by a first anterior portion 38 of the anterior end 32. In other words, the first anterior portion 38 is erect on the edge 36 of the tongue 34. The first anterior portion 38 has a length greater than the height h of the wings 22, 24, 26, 28. The first anterior portion 38 is itself extended by a second anterior portion 40 which extends back in a direction opposite to the tongue 34. Its The added length of the tongue 34 is greater than the width of the flat bottom 20. In other words, the second front portion 40 spans one 22 of the wings of the metal upright 16, extending opposite the wall 14.

[0054] The rear end 30 comprises, itself, an application plate 42, applied against the wall 14. It is extended at one 44 of its ends by a first rear portion 46 erected in relation to the application plate 42. And the first rear portion 46 of the rear end 30 is itself extended at one 48 of its ends, by a second rear portion 50 which extends back parallel to the application plate 42 and which joins perpendicularly the second front portion 40 of the front end 32.

[0055] Thus, the rear end 30 and the front end 32 of the intermediate support 18 are formed from a single piece stamped from a metal strip. The thickness of the metal strip is, for example, between 0.5 mm and 1.5 mm. Advantageously, the thickness of the metal strip is 0.8 mm.

[0056] Furthermore, it will be observed that the second rear portion 50 and the first front portion 38 are substantially the same length and are parallel to each other. Consequently, the first rear portion 46 and the tongue 34 are substantially coplanar. Therefore, the tongue 34 extends substantially perpendicularly to the wall 14 and comes to rest against the flat bottom 20 of the metal upright 16, which flat bottom 20 also extends substantially perpendicularly to the wall 14.

[0057] Moreover, the first rear portion 46 and the mounting plate 42 have a length close to twice that of the second rear portion 50. This characteristic makes it easier to screw the mounting plate 42 in place.

[0058] Thus, in perspective [Fig.2], we see the intermediate support 18 and its plate The wall plate 42 is mounted flat in a horizontal direction on the wall 14. The wall plate 42 is held in a fixed position against the wall 14 by means of fixing screws 52 passing through fixing holes 55 made in the wall plate 42.

[0059] The profiled metal upright 16 is also found extending vertically along the wall 14, while the first anterior portion 38 and the tongue 34 are engaged between the two opposite wings 22, 24. The tongue 34 is then applied against the flat bottom 20 of the metal upright 16.

[0060] Also, the tongue 34 has an orifice 54 adapted to receive a self-tapping screw to facilitate the engagement of a screw through it and through the flat bottom 20 of the upright 16 in the desired position.

[0061] Indeed, as illustrated in [Fig. 1], the distance D extending between the wall panel 14 and the metal stud 16 can be adjusted, in a direction perpendicular to the wall 14, between a first extreme position where the metal upright 16 is close to the wall 14 and in which case the tongue 34 can come to rest against the wing 24 in order to be secured to the flat bottom 20 by means of the screw which passes through the wing 24 and the flat bottom 20, and a second extreme position where the metal upright 16 is away from the wall 14 and in which case the first anterior portion 38 is in rest against the other wing 22, the tongue 34 can be secured to the flat bottom 20 near the other wing 22.

[0062] Thus, thanks to the adjustable structural assembly 10, its metal upright 16 can be installed along the wall 14 at a distance between the two extreme distances mentioned above. It is then easy to align a plurality of metal uprights 16 along the wall 14, even if the latter is irregular.

[0063] Reference will now be made to [Fig.3] showing a single intermediate support 318 according to a second mode of implementation.

[0064] It has a rear end 330 opposed to an anterior end 332 adapted to be connected to said metal upright.

[0065] The anterior end 332 comprises a free tab 334 of a length equivalent to the length of the tab 34 illustrated in [Fig. 1]. On one 336 of its edges, the tab 334 is extended back by a first anterior portion 338 of the anterior end 332.

[0066] The first front portion 338 is itself extended by a second front portion 340 which extends back in an opposite direction to the tongue 334. Its length added to that of the tongue 334 is greater than the width of the flat bottom 20 of the profiled metal upright 16.

[0067] Also, the dimensions of the first anterior portion 338 and of the second anterior portion 340 are also equal to those of the corresponding portions 38, 40 illustrated on [Fig.1].

[0068] On the other hand, the rear end 330 comprises the single mounting plate 342, which extends directly back from the second front portion 340 in a direction opposite to the first front portion 338. The mounting plate 342 has fixing holes 355 so that it can be mounted in a fixed position against the wall.

[0069] Such a simplified intermediate support configuration 318 is advantageous when the double partition is installed in a position relatively close to the wall of wall.

[0070] Reference will now be made to [Fig.4], [Fig.5] and [Fig.6], showing an anterior end 432 and a posterior end 530 of an intermediate support 618 according to a third embodiment.

[0071] A particular feature of this method of implementation lies in the possibility of being able to adjust, in addition, the relative position of the front end 432 and the rear end 530, always in a direction perpendicular to the wall 14.

[0072] Thus, as illustrated in [Fig. 4], the anterior end 432 comprises a free tab 434 of a length equivalent to the length of the tab 34 illustrated in [Fig. 1]. On one 436 of its edges, the tab 434 is extended back by a first anterior portion 438 of the anterior end 432.

[0073] The first front portion 438 is then itself extended by a second front portion 440 which extends back in an opposite direction to the tongue 434. Its length added to that of the tongue 434 is also greater than the width of the flat bottom of the profiled metal upright.

[0074] And, the dimensions of the first anterior portion 438 and of the second anterior portion 440 are also identical to those of the corresponding portions 38, 40 illustrated on the [Fig.1].

[0075] The second anterior portion 440 has in addition two lateral opposite borders erected opposite each other 58, 60 and a median oblong recess 62 extending parallel to the two opposite borders 58, 60 and perpendicular to the first anterior portion 438.

[0076] As for the rear end 530, illustrated in [Fig.5], it includes an application plate 542, extended at one 544 of its ends by a first free rear portion 546, erected in relation to the application plate 542.

[0077] The first free posterior portion 546 has a median row 64 of forehole 66.

[0078] Thus, the posterior end 530 is adapted to cooperate with the anterior end 432 shown in [Fig.4] to form the intermediate support 618 shown in [Fig.6].

[0079] More specifically, the first posterior portion 546 is applied against the second anterior portion 440 and between the two opposite lateral upright borders 58, 60. The first posterior portion 546 can then be adjusted by sliding against the second anterior portion 440 while being guided in translation by the two opposite lateral borders 58, 60.

[0080] After the relative position of the tongue 434 and the mounting plate 542 has been determined, a screw is forcibly screwed through at least one pilot hole 66, which screw then engages through the median oblong recess 62. At the end of the screwing, when the screw head comes to rest against the first rear portion 546 around the pilot hole 66, the two portions 546 and 440 are blocked in translation.

[0081] Such an implementation method allows for an increased range of adjustment of the spacing of the metal upright relative to the wall, in addition to the possibility of adjusting the position of the tab 434 against the flat bottom of the metal upright.

[0082] According to another embodiment illustrated in [Fig.7] and in accordance with the third implementation method, the intermediate support has a geometry similar to that of the intermediate support 18 according to the first implementation method.

[0083] Thus, the anterior end 732 includes a free tongue 734. On one 736 of its edges, it extends back by a first anterior portion 738. The latter is itself extended by a second anterior portion 740 which extends back in a direction opposite to the tongue 734.

[0084] The second anterior portion 740 is extended by a second posterior portion 750 which extends at a right angle opposite the first anterior portion 738. And the second posterior portion 750 is extended by a second first posterior portion 745 in return, substantially in the plane defined by the tongue 734.

[0085] The second first posterior portion 745 then has the same geometry as the second anterior portion 440 illustrated in [Fig.4]. Thus, the second first posterior portion 745 has in addition two opposing lateral borders erected opposite each other 758, 760, an oblong median recess 762 extending parallel to the two opposing borders 758, 760 and perpendicular to the second posterior portion 750.

[0086] Accordingly, the first posterior portion 546 of the posterior end 530 illustrated in [Fig.5] is adapted to come into contact with the second first posterior portion 745 and between the two opposite lateral upright borders 758, 760. The first posterior portion 546 and the second first posterior portion 745 are then adjustable relative to each other and are secured in a manner analogous to the two portions 546, 440 as illustrated in [Fig.6].

[0087] According to a fourth embodiment illustrated in [Fig.8] and [Fig.9], an anterior end 832 is configured so that it can be installed on a support member already known and thus formed a new intermediate support.

[0088] Thus, as illustrated in [Fig.8], the anterior end 832 comprises a free tab 834 of a length equivalent to the length of the tab 34 illustrated in [Fig.1]. On one 836 of its edges, the tab 834 is extended back by a first anterior portion 838 of the anterior end 832.

[0089] The first front portion 838 is extended by a second front portion 840 which extends back in an opposite direction to the tongue 834. Its length added to that of the tongue 834 is also greater than the width of the flat bottom of the profiled metal upright.

[0090] And, the dimensions of the first anterior portion 838 and of the second anterior portion 840 are also the same as those of the corresponding portions 38, 40 illustrated on the [Fig.1].

[0091] Furthermore, the second anterior portion 840 extends into a third portion 850, which returns to form a stile. This third portion 850 extends parallel to the first anterior portion 838. It has a proximal leg 68 contiguous to the second anterior portion 840 and a distal leg 70 parallel to the proximal leg and also to the tongue 834. These two legs 68, 70 are connected by a bridge 72. The third portion 850 thus defines a space 74 delimited by the two legs 68, 70 and the bridge 72.

[0092] The third portion 850 is then adapted to engage with an anchor head of an adjustable anchoring device on a threaded rod 76, which can be seen in [Fig. 9]. The anchor head then extends into the space 74.

[0093] On this [Fig.9] we find the profiled metal upright 16 and the front end 832 which masks the anchor head and the aforementioned adjustable anchor device.

[0094] The threaded rod 76 is connected to the wall wall 14 by means of an anchor piece 78 engaged in a horizontal U-profile 80 with edges curved towards each other, which U-profile 80 is integral with the wall wall 14. This assembly combined with the adjustable anchoring device forms a rear end 930, which, combined with the front end 832 constitutes an intermediate support 918 according to this fourth embodiment.

[0095] Thus, the front end 832 plays the same role here on [Fig.9] in terms of adjustment, with respect to the profiled metal upright 16 as the front end 32 illustrated on [Fig.1] with respect to this profiled metal upright 16. The rear end 930 thus offers a second possibility of adjustment.

Claims

Demands

1. An adjustable wall lining structure assembly, comprising: - at least one profiled metal upright (16) having a flat bottom (20) and two wings (22, 24) of a given height erected opposite each other with respect to said flat bottom; - at least one intermediate support (18) having a rear end (30) adapted to be connected to a wall (14) to be lined and an opposite front end (32) adapted to be connected to said at least one upright (16), in order to be able to maintain said at least one upright in a vertical direction and in support against said wall; characterized in that said front end (32) comprises a tongue (34) and a first front portion (38) erected on said tongue over a length greater than said given height, said first front portion (38) extending by a second front portion (40) opposite said tongue towards said rear end (30);and in that said tongue (34) is adapted to be mounted in a fixed position against said base (20) of said at least one metal upright (16) between said two wings (22, 24), and between a position close to one (22) of said two wings, while said one of said two wings (22) is away from said rear end (30) and a position away from said one (22) of said two wings, while said one (22) of said two wings is close (30) to said rear end.;

2. Structure assembly according to claim 1, characterized in that said tongue (34) has an orifice (54) to be able to receive a screw (56) adapted to be screwed through said bottom (20).

3. Structure assembly according to claim 1 or 2, characterized in that said second anterior portion (40) extends back from said first anterior portion (38).

4. A structural assembly according to any one of claims 1 to 3, characterized in that said rear end (330) comprises a first mounting plate (342), connected substantially perpendicularly to said second front portion (340).

5. A structural assembly according to any one of claims 1 to 3, characterized in that said rear end (30) comprises a second mounting plate (42) and a first portion posterior (46) erected on said second mounting plate, and in that said first posterior portion (46) is connected to said second anterior portion (40) by a second posterior portion (50), while said first posterior portion (46) and said tongue (34) are substantially coplanar.

6. A structural assembly according to any one of claims 1 to 5, characterized in that said intermediate support (18) is formed from a single piece of metal.

7. Structure assembly according to any one of claims 1 to 3, characterized in that said front end (432) and said rear end (530) are adjustable relative to each other.

8. A structural assembly according to claim 7, characterized in that said front end (432) comprises a front flat portion (440) having two first lateral borders (58, 60) erected opposite each other to form a slide, while said rear end (530) comprises a rear flat portion (546) adapted to be applied against said front flat portion (440) between said borders to form a slide, and in that said two flat portions (440, 546) are adapted to be held in a fixed position relative to each other by a transverse screw.

9. Structure assembly according to claim 8, characterized in that said front flat part (440) has a median oblong recess (62) parallel to said borders (58, 60), said transverse screw being adapted to be screwed through said rear flat part (546) and through said median oblong recess (62).

10. A structural assembly according to claim 8 or 9, characterized in that said rear end comprises a third application plate (542), and in that said rear flat part (546) extends at right angles to said third application plate.

11. Structure assembly according to claim 7, characterized in that said front end (832) further comprises a third front portion (850) forming a rider and extending opposite said first front portion (838).

12. A structural assembly according to any one of claims 1 to 11, characterized in that said at least one profiled metal upright (16) further comprises two other wings (26, 28) erected opposite each other one from the other with respect to said flat bottom (20), respectively opposite said two wings (22, 24) with respect to said flat bottom.