EP3748097A1 - Metal frame for prefabricated drywall panels - Google Patents

Abstract

[Metal framing for prefabricated panel drywall, said metal framing comprising a metal channel (10) having a bottom (12) and two opposing wings (14, 16) extending from said bottom (12) facing each other. on the other, said facing wings being able to respectively receive prefabricated bearing panels. Said bottom (12) of said metal section (10) has at least one set of n cutouts (28, 30, 32, 34) each extending from a central point (36) and along n mean radii (R1, R2, R3, R4), in order to be able to bend n tabs (44, 46, 48, 50) projecting from said bottom (12) around a duct passage lumen (52), n being a natural number greater than 2.

Description

[The present invention relates to a metal framework for drywall of a prefabricated panel.

One field of application envisaged is in particular, but not exclusively, that of drywall of prefabricated plaster panels, installed inside buildings.

Known metal frames include horizontal rails installed respectively in the floor and ceiling walls, as well as U-shaped metal profiles mounted vertically and installed in engagement in the rails. U-shaped metal profiles, or uprights, have respectively a bottom and two opposite wings and they are adjusted step by step so that their bottom is oriented perpendicular to the rails, while their wings extend in planes parallel to the mean plane defined by the rails. Thus, the opposite wings of the metal sections can receive in abutment prefabricated facing panels which are then secured thereto by screwing.

Between the prefabricated panels, thus defining the partition, insulating materials such as glass wool or rock wool are generally inserted. In addition, we install cable trays. To do this, the bottom of the metal profiles have pre-cut circular holes allowing the passage of standard corrugated sheaths, the interior of which forms the passageways for the cables.

These circular orifices are generally oversized so as to be able to accommodate all the dimensions of corrugated sheath. In addition, they have a clear inner edge which disrupts the deployment of the ringed sheaths through the orifices of the metal profiles, because the rings of the sheath tend to straddle the hard edge and to block there in translation.

Also, a problem which arises and which the present invention aims to solve is to provide a metal framework which makes it possible to facilitate the deployment of the ducts through the bottom of the metal profiles.

For this purpose, there is provided a metal frame for a drywall of a prefabricated panel, said metal frame comprising a metal profile. having a bottom and two opposite wings extending from said bottom facing each other, said facing wings being able to respectively receive prefabricated panels in support. And said bottom of said metal section has at least one set of n cutouts each extending from a central point and along n average radii, in order to be able to bend n projecting tabs from said bottom around a duct passage slot, n being a natural number greater than 2.

Thus, a characteristic of the invention resides in the implementation of n cutouts in the bottom of the profile during its manufacture, so as to be able then, during the installation of the metal profile, to push in its bottom wall at the level of the cutouts to form tabs which are extended substantially perpendicular to the bottom. Also, the passage light defines an opening of a section greater than that defined by the cutouts. In this way, the ringed sheaths can be easily driven in translation through the sheath passage openings thus formed since the surface of the tabs promotes their sliding.

Also, if we made two cuts from a central point along rays or non-collinear segments, perpendicular to each other for example, we could then push in a tab, but then the passage light would present two sharp edges which could block the corrugated sheath in translation. Consequently, from the implementation of three cutouts extending along non-hilly radii, a substantially triangular sheath passage opening is produced and having three edges provided with tabs, which are themselves substantially triangular.

According to a particularly advantageous embodiment of the invention, the framework further comprises another metal section having another bottom and two other opposite wings extending from said other bottom facing each other. , said one profile and said another profile being adapted to be mounted against each other. Metal profiles usually have standard lengths and dimensions according to their standard cross section, while the height of drywall can vary. Also, we associate in situ, for example two U-shaped profiles back to back, by adjusting them to the desired total height, then they are secured by self-tapping screws through their bottom.

In addition, said other bottom advantageously has at least one other set of n ' cutouts each extending from another central point and along n' other mean radii, in order to be able to bend n 'other projecting tongues from said other bottom around another sheath passage lumen, n ' being a natural number greater than 2. Another sheath passage lumen is thus produced in the other metal profile in the same way as for the first. In this way, it also allows the formation of other duct passage openings in the other section and hence the insertion of corrugated ducts through the other section.

According to a particularly advantageous embodiment of the invention, said facing wings are extended respectively by two extensions folded away from each other against said wings to extend behind said bottom. In this way, by means of a single metal strip, an I-profile is obtained, the inertia of which is particularly increased. In other words, the metal I-section is more resistant to bending.

In addition, and preferably, said other facing wings are extended respectively by two other extensions folded away from one another against said other wings to extend behind said other bottom. In this way, it is easy to associate the two metal sections sliding one inside the other as will be explained in more detail in the remainder of the description. The two funds come to rest back to back, while the extensions of the two profiles overlap respectively. In this way, the length of the two profiles engaged one in the other is easily adjusted to the desired partition height in order to then fix them there by means of screws through the two back-to-back bases. It will be observed that the cuts made in the bottom of the profiles in no way interfere with their sliding during the adjustment of the total length. When they are screwed, it is possible to deform the tabs and spare the passage openings, in the bottom parts that are not superimposed.

According to a particularly advantageous embodiment of the invention, said at least one assembly comprises four cutouts extending, from said central point, along four mean radii successively perpendicular to each other. In this way, four tabs can be deformed in order to extend them projecting from the bottom of the metal profile. Naturally, we come to extend the four tabs on the same side of the bottom so as to allow better guidance of the corrugated sheaths in translation through the passage opening thus released.

According to a first variant implementation, in accordance with the preferred embodiment above, said cutouts are slots. In this way, we come to deform and extend projecting four triangular tabs by releasing a substantially square passage slot. In this way, when a ringed sheath is driven in translation through the passage lumen, it is driven in friction on the surface of the tongues and does not encounter any sharp edge or any obstacle liable to interrupt its course.

According to a second variant implementation, each of said cutouts has, from said central point and according to the corresponding mean radius, a small square recess followed by a large square recess, the diagonals of said square recesses being coincident with said corresponding mean radius . The four cuts then successively orthogonal to one another, then form a central square recess centered on the central point and resulting from the cuts of the small square recesses, and four corner square recesses resulting from the large square recesses. Preferably, said small square recess is substantially four times smaller than said large square recess, so as to be able to better release the tabs. In this way, four tabs capable of being deformed are drawn on each of the four edges of the passage opening thus released, as will be explained below in more detail.

In addition, said bottom of said metal section advantageously has a plurality of sets of n cutouts spaced from one another. For example, the sets of n cutouts are spaced from each other by 500 mm so as not to lower the inertia of the metal profile.

According to another aspect, the present invention relates to a method of mounting a metal framework for a drywall of a prefabricated panel, comprising the following steps: a metal framework is provided as described above, said metal framework comprising a metal profile having a bottom and two opposite wings extending from said bottom facing each other, said facing wings being able to respectively receive prefabricated panels in abutment, said bottom of said metal section having at least one set of n cutouts each extending from a central point and along n average radii. And the n protruding tabs from said bottom are folded around a sheath passage lumen, n being a natural number greater than two.

Thus, a sheath is also provided and, advantageously, said sheath is driven in translation through said sheath passage lumen.

• [Fig. 1] est une vue schématique partielle en perspective de l'extrémité d'un élément d'une ossature conforme à l'invention ;
• [Fig. 2] est une vue schématique partielle latérale de l'élément de l'ossature conforme à l'invention selon une première variante d'exécution de l'invention et dans un premier état ;
• [Fig. 3] est une vue schématique de détail et de face de l'objet de la figure [Fig. 2] ;
• [Fig. 4] est une vue schématique en perspective de l'objet de la figure [Fig. 2] selon un second état ;
• [Fig. 5] est une vue schématique de détail de l'objet de la figure [Fig. 4] ;
• [Fig. 6] est une vue schématique de détail partielle montrant l'objet de la figure [Fig. 5] associé à un élément complémentaire ;
• [Fig. 7] est une vue schématique partielle de détail montrant une seconde variante d'exécution de l'invention, dans un premier état ;
• [Fig. 8] est une vue schématique de l'objet de la figure [Fig. 7] montrant l'objet de la figure [Fig. 7] dans un second état ; et,
• [Fig. 9] est une vue schématique en coupe droite montrant deux éléments d'ossature montés l'un dans l'autre.

Other features and advantages of the invention will emerge on reading the description given below of particular embodiments of the invention, given as an indication but not as a limitation, with reference to the appended drawings in which:

• [ Fig. 1 ] is a partial schematic perspective view of the end of an element of a frame according to the invention;
• [ Fig. 2 ] is a partial schematic side view of the frame element according to the invention according to a first variant embodiment of the invention and in a first state;
• [ Fig. 3 ] is a detailed schematic front view of the object of figure [ Fig. 2 ];
• [ Fig. 4 ] is a schematic perspective view of the object of figure [ Fig. 2 ] according to a second state;
• [ Fig. 5 ] is a detailed schematic view of the object of figure [ Fig. 4 ];
• [ Fig. 6 ] is a partial detail schematic view showing the object of figure [ Fig. 5 ] associated with an additional element;
• [ Fig. 7 ] is a partial schematic view of detail showing a second variant embodiment of the invention, in a first state;
• [ Fig. 8 ] is a schematic view of the object of figure [ Fig. 7 ] showing the object of figure [ Fig. 7 ] in a second state; and,
• [ Fig. 9 ] is a schematic cross-sectional view showing two frame elements mounted one inside the other.

The Figure 1 shows the free end of a first metal I-channel 10 for forming metal framing studs for drywall of prefabricated panels. The first metal section 10 has a first bottom 12 and two first opposite wings 14, 16 which extend perpendicularly from the first bottom 12 facing each other, forming a U-shaped section. The first wings 14, 16 are extended by two first extensions 18, 20 folded away from each other against their respective first wings 14, 16, so as to be able to extend parallel to one another behind the first base 12.

The first extensions 18, 20 have a width substantially twice that of the first wings 14, 16, so that they extend parallel to one another behind the first base 12 over a width substantially equivalent to that of the first wings 14, 16. For example, the first extensions 18, 20 have a width close to 60 mm, while the first wings 14, 16 have a width close to 30 mm. However, one 18 of the first extensions extends over a width, for example of 60 mm, appreciably greater than that of the other first extension 20 neighboring for example of 57 mm, for practical reasons as will be explained below. -after. Furthermore, the width of the first bottom 12 varies depending on the types of partition, for example between 35 mm and 150 mm. In addition, the first extensions 18, 20 have free edges 22, 24 curved towards one another. As will be explained below, such metal I-sections 10 make it possible to form amounts of metal frameworks, and preferably their original length is for example 1600 mm and they are paired and slidably mounted one in the same. 'other to be able to adjust the length of the upright to the wall height.

The metal I-sections are shaped continuously in a forming installation from a single metal strip with a thickness of, for example, between 0.4 mm and 1 mm. The forming installation also comprises, downstream, cutting members making it possible to cut the profile into sections of predetermined length and for example 1600 mm. Upstream, the forming installation comprises a punching device making it possible to continuously produce cuts in the metal strip. Thus, the figure [ Fig. 2 ] partially illustrates the first metal section 10, which has in the bottom 12, a first set of checkerboard cutouts 26 according to a first variant embodiment and which will be described in detail from the front with reference to FIG. Fig. 3 ].

Thus, the first set of checkerboard cutouts 26 corresponds to four cutouts 28, 30, 32, 34 extending radially, from a central point 36 and along four average radii, or segments, R1, R2, R3 and R4 substantially identical and offset by 90 ° to each other. Each of the cutouts 28, 30, 32, 34 break down, starting from the central point 36, into a small square recess proximal 38 and a large distal square recess 40 communicating through their corner. Each of the mean radii R1, R2, R3 and R4 is then coincident with the diagonals of the small proximal square recess 38 and of the large distal square recess 40, which are located in the extension of one another. Also, the four small proximal square recesses 38 together form a single central square recess 42 having the central point 36 as its center.

Such a set of cutouts 28, 30, 32, 34 thus makes it possible to define four tabs 44, 46, 48, 50 oriented towards the central point 36. During the implementation of the first metal profile 10 to form the upright of a framework, we then push in the four tabs 44, 46, 48 and 50 on the same side of the bottom 10 as shown in figure [ Fig. 4 ], so as to release a first square passage light 52.

The square passage lumen 52 thus defines four inner edges 54, 56, 58 and 60. The tabs 44, 46, 48 and 50 can easily be deformed and driven in with the fingers, because the thickness of the metal, of the order of a few tenths of a millimeter, is small enough that they can be deformed by hand. Also, the tongues 44, 46, 48 and 50 are bent to be worn substantially perpendicular to the bottom 12 as illustrated in detail in FIG. [ Fig. 5 ]. We find in this figure the four tabs 44, 46, 48 and 50 projecting from the bottom 12 and around the first square passage slot 52, one for each of the edges 54, 56, 58 and 60. It will be observed that the tabs 44 , 46, 48 and 50, when they are pushed in, do not fold precisely around the edges 54, 56, 58 and 60 respectively, but with a significant offset then offering a setback relative to these edges 54, 56, 58 and 60. The interest of these setbacks will be measured with reference to figure [ Fig. 6 ] having a ringed sheath portion 62 engaged through the square passage opening 52. Thus, the sheath portion 62, the diameter of which is of course less than the distance between the facing tabs 44, 48 and 46, 50, can be driven in translation through the square passage opening 52 by bearing on one or the other of the tabs 44, 46, 48 and 50 folded parallel to each other. The sheath portion 62 is driven in friction on the surface of the folded tongues 44, 46, 48 and 50 without being able to come into contact with any of the four internal edges 54, 56, 58 and 60, in particular thanks to the recesses described below. -above.

Also, the present invention relates to a method of mounting a metal framework for drywall of a prefabricated panel.

According to said method, a metal framework is provided comprising a plurality of metal sections 10 as described above. Then, the four tabs 44, 46, 48, 50 projecting from the bottom 12 are folded around the duct passage slot 52, for each of the metal profiles. Then, the sheath 62 is supplied and the sheath 62 is driven in translation through the sheath passage slots 52 of the metal sections.

Thus, when the metal I-sections are installed vertically to form a framework, and before the prefabricated inter-panel space is closed, the sheath is stretched through the passage slot without restraint due to the sharp edges of these slots. .

The punching device described above also makes it possible to continuously produce a second set of cross cuts 26 'in the bottom 12' of the metal strip. Thus, we refer to the figure [ Fig. 7 ] illustrating in detail this second variant embodiment of the invention. Also, the functional elements identical to those of the first variant embodiment will have the same references assigned a prime sign: “'”. Thus, this second set of cross cutouts 26 'corresponds to four cutouts 28', 30 ', 32', 34 'in the form of slots, extending radially from the central point 36' and along four average radii R1 ' , R2 ', R3' and R4 'substantially identical and offset by 90 ° to each other. Such a set of cutouts 28 ', 30', 32 ', 34' thus makes it possible to define four triangular tabs 44 ', 46', 48 'and 50' oriented towards the central point 36 '.

Also, as illustrated in Figure [ Fig. 8 ], the tongues 44 ', 46', 48 'and 50' are bent so as to be worn substantially perpendicular to the base 12 'on the same face thereof. We find in this figure [ Fig. 8 ] the four tabs 44 ', 46', 48 'and 50' projecting from the bottom 12 'and around a second square passage slot 52'. In the same way, as in the first variant embodiment illustrated in FIG. Fig. 6 ], it is easy to drive in translation a ringed sheath through the second square passage slot 52 'which then rubs against the triangular tongues 44', 46 ', 48' and 50 '.

In the spirit of this second variant embodiment, it will be observed that it is easy to make a set of six cutouts each extending from a point central and along six average radii, in order to be able to bend six tabs projecting from the bottom around a duct passage slot. In addition, still according to this second variant embodiment, it is easy to reduce the width of the slots to the simple width of the cutting blade of the punch. In this way, when the tongues are not bent, the metal profile retains a high inertia.

Furthermore, and in a particularly advantageous manner, a plurality of sets of cutouts as described above is made in the bottom of the I-section; the sets of cutouts being spaced from each other by a predetermined distance, for example 500 mm. In this way, it is possible to install several cable duct sheaths in the thickness of the partition and also to be able to choose the height to which one wishes to extend a single sheath.

It will be observed that the cutouts thus described, to the right of the first variant execution or to the right of the second, can also be made in a C-section, which also make it possible to form uprights to produce metal frames of drywall .

The advantage of using I-sections of the type of the first metal I-section 10, illustrated in figures [ Fig. 1] and [Fig. 2 ], is that they can be paired and telescoped into each other to fit into high wall partitions. In addition, as long as the tabs of the cutouts are not bent, the sliding of the profiles one inside the other is by no means prohibited.

We will thus refer to the figure [ Fig. 9 ] showing in cross section the first metal I-profile 10 slidably mounted inside a second metal I-profile 10 '. We find there the first bottom 12 together with its two first opposite wings 14, 16 which extend perpendicularly from the first bottom 12 facing each other. We also find the first two extensions 18, 20 extending the first wings 14, 16, and respectively folded against them opposite to each other to be able to extend parallel to one another behind the first bottom 12.

The second metal section 10 'is matched head to tail with the first 10. Thus it comprises a second bottom 12' resting flat against the first bottom 12, and it is matched with its two second opposite wings 14 ', 16' which extend perpendicularly from the first bottom 12 'facing each other. In addition, the second wings 14 ', 16' are respectively extended by two second extensions 18 ', 20', which are folded respectively against the second wings 14 ', 16', one of the second extensions 20 'engaging between the one of the first wings 14 and one of the first extensions 18, while the other of the second extensions 18 'comes to rest against the other first extension 20, which is itself in engagement between said second wing 14' and said another second extension 18 'which extends it. In this way, a single doubled profile is obtained, of which the two profiles 10,10 'which constitute it are able to slide one inside the other.

The second metal I-section 10 'also has a plurality of sets of cutouts made in its bottom 12' and spaced from one another. Therefore, when the two sections 10, 10 'are slid to the desired length, they are then held in a fixed position by means of the implementation of self-tapping screws through their two supporting bottoms; the uncovered and non-superimposed portions of the funds 12, 12 'then free, in the upper part and in the lower part of the upright thus formed, the sets of cutouts which can thus be implemented for the passage of the ducts.

Claims (12)

A metal frame for a pre-fabricated panel drywall, said metal frame comprising a metal section (10) having a bottom (12) and two opposed wings (14, 16) extending from said bottom (12) facing one of the other, said facing wings being able to respectively receive prefabricated bearing panels;
characterized in that said bottom (12) of said metal section (10) has at least one set of n cutouts (28, 30, 32, 34) each extending from a central point (36) and along n radii means (R1, R2, R3, R4), to be able to bend n tabs (44, 46, 48, 50) projecting from said bottom (12) around a sheath passage lumen (52), n being a natural integer greater than 2. Metal frame according to claim 1, characterized in that it further comprises another metal section (10 ') having another bottom (12') and two other opposite wings (14 ', 16') extending from said another bottom (12 ') facing each other, said one section (10) and said other section (10') being adapted to be mounted against each other. Metal frame according to claim 2, characterized in that said other bottom (12 ') has at least one other set of n' cutouts (28 ', 30', 32 ', 34') each extending from a another central point (36 ') and along n' other average radii (R1 ', R2', R3 ', R4'), to be able to bend n 'other protruding tongues (44', 46 ', 48', 50 ') of said other bottom (12 ') around another duct passage lumen (52'), n ' being a natural number greater than 2. Metal framework according to any one of claims 1 to 3, characterized in that said facing wings (14, 16) extend respectively by two extensions (18, 20) folded away from each other against said wings (14, 16) to extend behind said bottom (12). Metal frame according to claims 2 or 3 and 4, characterized in that said other facing wings (14 ', 16') extend respectively by two other extensions (18 ', 20') bent away from one of the other against said other wings (14 ', 16') to extend behind said other bottom (12 '). Metal framework according to any one of claims 1 to 5, characterized in that said at least one assembly comprises four extending cutouts (28, 30, 32, 34; 28 ', 30', 32 ', 34'), from said central point (36; 36 '), along four mean radii (R1, R2, R3, R4; R1', R2 ', R3', R4 ') successively perpendicular to each other. Metal framework according to claim 6, characterized in that said cutouts (28 ', 30', 32 ', 34') are slots. Metal framework according to claim 6, characterized in that each of said cutouts (28, 30, 32, 34) has, from said central point (36) and according to the corresponding mean radius (R1, R2, R3, R4) a small square recess (38) followed by a large square recess (40), the diagonals of said square recesses (38, 40) coinciding with said corresponding mean radius. Metal frame according to claim 8, characterized in that said small square recess (38) is substantially four times smaller than said large square recess (40). Metal frame according to any one of claims 1 to 9, characterized in that said bottom (12; 12 ') of said metal section (10; 10') has a plurality of sets of n cutouts spaced from one another. Method of mounting a metal framing for precast panel drywall, comprising the following steps: - There is provided a metal frame according to any one of claims 1 to 10, said metal frame comprising a metal section (10) having a bottom (12) and two opposite wings (14, 16) extending from said bottom ( 12) facing one another, said facing wings being able to respectively receive prefabricated bearing panels, said bottom (12) of said metal section (10) having at least one set of n cutouts (28, 30) , 32, 34) each extending from a central point (36) and along n mean radii (R1, R2, R3, R4); and, - The n tongues (44, 46, 48, 50) projecting from said bottom (12) are folded around a sheath passage slot (52), n being a natural number greater than 2. Mounting method according to Claim 11, characterized in that there is further provided a sheath (62) and in that one drives in translation said sheath (62) through said sheath passage lumen (52).

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