EP2551419B1 - A connection article for a support frame of a false ceiling and method of installation - Google Patents
A connection article for a support frame of a false ceiling and method of installation Download PDFInfo
- Publication number
- EP2551419B1 EP2551419B1 EP11175393.5A EP11175393A EP2551419B1 EP 2551419 B1 EP2551419 B1 EP 2551419B1 EP 11175393 A EP11175393 A EP 11175393A EP 2551419 B1 EP2551419 B1 EP 2551419B1
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- EP
- European Patent Office
- Prior art keywords
- metal profile
- support frame
- connection article
- profile
- profiles
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- 238000000034 method Methods 0.000 title claims description 5
- 238000009434 installation Methods 0.000 title 1
- 239000002184 metal Substances 0.000 claims description 173
- 229910052751 metal Inorganic materials 0.000 claims description 173
- 230000008878 coupling Effects 0.000 claims description 34
- 238000010168 coupling process Methods 0.000 claims description 34
- 238000005859 coupling reaction Methods 0.000 claims description 34
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000000284 resting effect Effects 0.000 claims 2
- 238000005452 bending Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
- E04B9/12—Connections between non-parallel members of the supporting construction
- E04B9/16—Connections between non-parallel members of the supporting construction the members lying in different planes
Definitions
- connection article suitable for support structures, or load-bearing structures, of false ceilings, i.e. support structures for walls or panels placed underneath a regular ceiling.
- Support structures for false ceilings comprise a support frame intended for supporting or propping of panels or plates, which are connected to the ceiling by a so-called hanger, steel rods or other coupling articles.
- the support frame includes metal profiles, preferably but not exclusively C- or U-shaped (i.e., made of a side wall and two opposed lateral sides or shoulders).
- the metal profiles are cross-like overlapped to ideally form a grid, the grid defining a plane for the panels of the false ceiling.
- the above-mentioned connection article is intended to connect and fix the metal profiles to each other in the region of areas of crossing between two metal profiles in the grid-like configuration.
- DE20215863U1 , DE29606746U1 , EP0638758A2 , DE3048946A1 , DE9304348U1 , DE19753711A1 disclose support structures for false ceilings.
- connection articles are not sufficiently effective for fixing metal profiles.
- known connection articles require many manual steps for the fixing to the profiles by an operator, with an entailed slowness in assembling.
- the need to perform various manual steps entails in some cases a lack of safety, owing to profiles not completely locked or not fixed in a workmanlike manner.
- the present disclosure stems from the technical problem of providing a connection article for a support frame of a false ceiling allowing to overcome the drawbacks mentioned above with reference to the known art, and/or attain further advantages or features.
- connection article is a C- or U-shaped sheet metal body (comprising a top wall and two side walls) and intended to be arranged straddling a pair of metal profiles cross-like placed the one on the other, i.e., it is a body intended to be arranged astride or straddling in the region of a crossing of a upper metal profile and a lower metal profile, so as to connect the two profiles in a crossed condition.
- the top wall of the connection article rises above, or lies on, lateral sides of the upper metal profile, whereas the side walls of the same connection article are partially inserted in the lower metal profile, and cooperate with end edges of the lateral sides of the lower metal profile.
- Each of the side walls of the connection article has lateral projections in the region of end areas. Such projections, when the article is arranged astride the metal profiles, are able to interfere (with a stable engagement) with opposite edges of the lower metal profile, so as to lock or trap the upper metal profile between the top wall of the connection article and the lower metal profile itself.
- the sheet metal body includes two finnings, on each side of the top wall, in which each finning is comprised between the side walls.
- each finning defines, with the respective side wall, a seat, recess or niche. The edge of each of the lateral sides of the upper metal profile is stably received into the niche, and interferes with a corresponding finning of the connection article.
- the lower metal profile is engaged by, or interferes with the projections of the side walls of the connection article, whereas the upper metal profile is locked between the top wall of the connection article, where it cooperates with the finnings, and the lower metal profile.
- edges of the upper metal profile by being received into the niches and interfering with the finning, prevent a collapse of the upper metal profile on itself, i.e. a closing of the lateral sides of the upper metal profile the one towards the other.
- This locked/trapped position allows a stable connection between the metal profiles, and prevents movements of the components in a vertical direction.
- a relative sliding of the upper metal profile, the lower metal profile and the connection article may be allowed in order to modify a pitch in a grid made of plural metal profiles placed cross-like.
- the lower metal profile in order to insert at least partially the side walls of the connection article in the lower metal profile, is slightly spread apart elastically during insertion, so that after an elastic return the lateral sides of the lower metal profile cooperate with the projections of the connection article.
- said projections are bent and cambered towards the outside, so that the lateral sides of the lower metal profile can slide thereon during the spreading apart.
- connection article is sized so that a distance between the pairs of side walls is less than a distance between the lateral sides of the upper metal profile. For instance, the distance between the pairs of side walls is measured at the height of the above-mentioned seat or niche. This feature allows, when the connection article is placed on the metal profiles, to flex the sides of the upper metal profile the one to the other, so as to ensure more stable contact with the connection article.
- the above-mentioned distance between the pairs of side walls of the connection article is selected less than a distance between the lateral sides of the upper metal profile, so that the upper metal profile defines a convex-radius camber area facing the lower metal profile, said camber area being in pressing contact against said other metal profile.
- connection article when the connection article is placed on the metal profiles the lower metal profile is trapped or locked, both by the projections of the connection article, and by the camber area of the upper metal profile pressing towards the lower metal profile.
- This solution can improve stability of the connection and further prevent plays of the components in a vertical direction.
- a connection article for a support frame of a support structure of a false ceiling is denoted by reference number 1.
- a support or load bearing frame of a support structure of a false ceiling is denoted by reference number 100 and comprises a plurality of metal profiles 2a, 2b, also referred to as "C profiles" or “U profiles”, which are cross-like overlapped to define a grid-like configuration (partially visible in Figures 4-6 ).
- metal profiles 2a of a first set are arranged in parallel, evenly spaced the one from the other, and metal profiles 2b of a second set are arranged in parallel, evenly spaced the one from the other.
- the metal profiles 2a of the first set are overlapped to the second set of metal profiles 2b along a direction orthogonal to the first set.
- each metal profile 2a of the first set which lies above, or upper metal profile, is arranged in a configuration overlapped and crossed, or cross-like, to at least one metal profile 2b of the second set, which lies below, or lower metal profile.
- connection article 1 is intended to be arranged straddling the two metal profiles 2a, 2b in the area of crossing in order to connect in a stable way such two metal profiles 2a, 2b.
- connection article 1 once installed on-site, is therefore, e.g., arranged with an orientation like that visible in Figures 1 , 4-6 . It follows that any spatial reference in the present description and in the claims hereinafter, such as, e.g., “top”, “above”, “upper”, “bottom”, “lower”, “horizontal”, “vertical”, is to be understood as merely by way of example, with reference to the above-mentioned orientation.
- connection article 1 is a sheet metal body 10 bent and including two side walls 12 connected by means of first bends P1, for instance forming an angle ⁇ greater than 90° ( Figure 3 ), to a top wall 11.
- first bends P1 for instance forming an angle ⁇ greater than 90° ( Figure 3 )
- the side walls 12 are portions of the sheet metal body 10 facing and opposed to each other.
- the side walls 12 are slightly spread apart with respect to a vertical, for instance of an angle ⁇ of 5°, to form said angle ⁇ of 95°. In other words, the side walls 12 are in a mutually converging position.
- the top wall 11 is interposed between the side walls 12.
- the sheet metal body 10 has a shape substantially similar to an upturned U or C.
- the top wall 11 forms the base of the U or C
- the two side walls 12 are the two end sections of the U or C.
- the peculiar shape of the sheet metal body 10, and in particular the arrangement of the top wall 11 and of the side walls 12, define an internal housing A intended to receive, as will be seen hereinafter, one of the two metal profiles 2a.
- connection article 1 is symmetrical with respect to a longitudinal plane, identified in the figures by a dashed line denoted by reference letter L, orthogonally intersecting the two side walls 12, and is also symmetrical with respect to a transversal plane, identified in the figures by a dashed line denoted by reference letter T, crossing the centre of the housing A.
- the longitudinal plane L and the transversal plane T actually correspond, in the example, to symmetry planes.
- each side wall 12 includes, starting from bend P1, a central portion 12a, which therefore is contiguous to the top wall 11, and an end portion 13, corresponding to the edge area of the side wall 12 far from the top wall 11. More in particular, referring specifically to Figure 2 , the end portion 13 has a lateral extension greater than the central portion 12a and, sideways, defines coupling projections 17, which therefore project from opposite sides with respect to the longitudinal plane L.
- the end portion 13 is wider in a lateral direction starting from the longitudinal plane L.
- the sheet metal body 10 includes two coupling projections 17 in the region of each side of the end portion 13.
- the sheet metal body 10 overall includes four coupling projections 17.
- each end portion 13 is a free-end edge bent towards the outside of the sheet metal body 1 and wider than the central portion 12a.
- the end portion 13 is not only bent but also rounded or cambered with a concavity facing upwards in the figures, i.e., on the side of the top wall 11. It follows that also the coupling projections 17 have a shape curved upwards, i.e. with the concavity facing towards, or on the side of the top wall 11.
- the end portion 12b is bent cup-like.
- the end portion 13 comprises a connecting part 12b coplanar with the central portion 12a and a bent end part 12c.
- a second bend P2 having an angle of about 90°, is provided.
- the sheet metal body 10 includes two finnings 16.
- the finnings 16 are sheet metal portions projecting from the top wall 11 on each side of the top wall 11 in an area comprised between the side walls 12.
- the finnings 16 extend along a direction substantially parallel to the longitudinal plane L and orthogonally to the plane T.
- each finning 16 is separated from the top wall 11 by third bends P3, for instance 90° ones. More specifically, in the exemplary embodiment illustrated the finnings 16 are substantially trapezoidal-shaped (trapezium-shaped) sheet metal portions, bent downwards with respect to the top 11, on the side of the coupling projections 17 or towards the housing A.
- the trapezoidal shape of the finnings 16 defines, on each side of a respective finning 16, a respective seat, niche, or recess 160.
- the sheet metal body 10 further includes two reinforcing ribs 15.
- the reinforcing ribs 15 are essentially drawn sections of the sheet metal body 10. More specifically, the ribs 15 have a rounded or curved section and extend along the top wall 11, on the central portion 12a and towards the coupling projections 17.
- the two ribs 15 extend parallel on the top wall 11, on the central portions 12a of the side walls 12 to the connecting part 12b, and bend in a direction diametrically opposite to the longitudinal plane L to end each in the region of the coupling projections 17.
- the sheet metal body 10 includes two reinforcing drawn sections 14.
- the drawn sections 14 are located in the region of the first bends P1, and are essentially sink marks or depressions, or hollows, located in the region of the bends P1. More specifically, the drawn sections 14 are located in a median zone of the bends P1 and define grip areas for the sheet metal body 10.
- each of the two metal profiles 2a, 2b extending along a respective longitudinal axis Z1, Z2.
- the metal profile 2a, 2b has a U-like shape, from which the above-mentioned "U profile" name derives, with a bottom wall 22 and two lateral sides 21.
- the metal profile 2a, 2b has the cavity 24 of the U facing upwards.
- the bottom wall 22 connects to the side walls 21 by means of corners 23.
- Each side wall 21 ends with a bent edge 20, in the example rounded, which, in the example, is rounded.
- the bent edge 20 is obtained by bending the lateral side 21 onto itself. More specifically, the bending faces the cavity 24 of the metal profile 2a, 2b. It follows that, in the exemplary embodiment, the bent edges 20 define a projection oriented towards the cavity 24 of the metal profile 2a, 2b.
- a distance D between the pairs of side walls 12 of the connection article 10 is less than a distance between the lateral sides 21 of the metal profile, i.e. is less than the width of the cavity 24, width that is measured along a direction orthogonal to the longitudinal axis Z1, Z2.
- the distance D between the pairs of side walls 12 is measured in the region of a connection zone between each side wall 12 and the top wall 11, in the region of the first bends P1 or of the niches/seats 160.
- connection article when the connection article is arranged astride of or straddling a metal profile 2a, 2b, and the side walls 12 of the connection article 10 embrace from the outside the corresponding lateral sides 21 of the metal profile 2a, 2b, forcing the sides 21 in a converging direction, the bottom wall 22 of the metal profile 2a, 2b is bent to have/define a camber area 30 substantially central and facing downwards. ( Figure 6 )
- connection article 1 a step of connecting and fixing between the connection article 1 and the metal profiles 2a, 2b.
- the two metal profiles are arranged in a relationship overlapped the one to the other, both with the cavity 24 of the "U" facing upwards.
- the metal profiles 2a, 2b are arranged cross-like or X-like, that is, with the longitudinal axes Z1, Z2 arranged orthogonally to each other.
- connection article 1 is inserted on the upper metal profile 2a so that the housing A be facing the cavities 24.
- connection article 1 is arranged straddling so as to embrace the upper metal profile 2a.
- bent edges 20 and the lateral sides 21 of the upper metal profile 2a are received inside the housing A of the connection article 1.
- connection article 1 is inserted with a certain tilt with respect to the horizontal, and in particular with the side walls 12 tilted with respect to the lateral sides 21, as illustrated in Figure 4 .
- the connection article 1 is inserted so that the longitudinal plane L be tilted with respect to the lateral sides 21 of the lower metal profile 2b.
- connection article 1 From this position, a downwards pressure is applied on the connection article 1, in the region of the top wall 11, towards the metal profiles 2a, 2b.
- the lateral sides 21 of the lower metal profile broaden out or move away the one with respect to the other, until obtaining the desired coupling.
- the coupling projections 17 pass over the bent edges 20 of the lower metal profile 2b.
- the four coupling projections 17 of the connection article 1 lie below the bent edges 20 of the lower metal profile 2b.
- the edges 20 of the upper metal profile 2a are received into the respective seats 160, so as to interfere with the finnings 16, and be locked there.
- the article for false ceiling according to the present disclosure can improve the modes of assembly between article for false ceiling and metal profiles, without vibrations.
- the shape and structure of the coupling projections of the article for false ceiling according to the present disclosure allow a quick, simple and safe coupling of article for false ceiling and metal profiles.
- the peculiar cambered and rounded shape of the coupling projections and their strength enable the coupling projections to elastically deform the side walls of the lower metal profile, by acting as a sort of wedge, and allowing to quickly obtain a connection between the connection article and the metal profiles.
- the article for false ceiling is perfectly integral to the metal profiles, both thanks to the constraints deriving from the coupling of the coupling projections on the edges of the lower metal profile, and thanks to the constraints deriving from the receiving, inside the housing, of edges and side walls of the upper metal profile.
- such a configuration can allow to minimize the risk that on-site plays or vibrations be generated between metal profiles and article for false ceiling, and can further prevent that the metal profiles be subject to deformations on-site.
- the peculiar shape of the housing and of the finnings can allow to lock in position the side walls and the edges of the upper metal profile.
- the upper metal profile can keep a constant contour and section, remarkably increasing the capacity.
- the distance between the side walls e.g. measured between the first bends, is less than the distance between the lateral sides of the metal profile.
- the upper metal profile is held stationary by the edges of the lower metal profile, which under the action of the projections of the connection article push upwards, and by the top wall and the finnings of the connection article, which pushes downwards.
- the lower metal profile is held stationary by the projections of the connection article, which push upwards, and by the camber area which pushes downwards.
- a spring structure is obtained in the region of the bottom wall of the upper metal profile that compresses the lower metal profile, all in a single assembly movement concluding with the full rotation of the connection article on the two orthogonally overlapped profiles.
- connection article connection article, upper metal profile, lower metal profile
- connection article connection article, upper metal profile, lower metal profile
Description
- The present disclosure refers to a connection article suitable for support structures, or load-bearing structures, of false ceilings, i.e. support structures for walls or panels placed underneath a regular ceiling.
- Support structures for false ceilings comprise a support frame intended for supporting or propping of panels or plates, which are connected to the ceiling by a so-called hanger, steel rods or other coupling articles. The support frame includes metal profiles, preferably but not exclusively C- or U-shaped (i.e., made of a side wall and two opposed lateral sides or shoulders). The metal profiles are cross-like overlapped to ideally form a grid, the grid defining a plane for the panels of the false ceiling. The above-mentioned connection article is intended to connect and fix the metal profiles to each other in the region of areas of crossing between two metal profiles in the grid-like configuration.
- For example,
DE20215863U1 ,DE29606746U1 ,EP0638758A2 ,DE3048946A1 ,DE9304348U1 ,DE19753711A1 disclose support structures for false ceilings. - In particular, at the basis of the present disclosure there is a recognition by the Inventors that currently known connection articles are not sufficiently effective for fixing metal profiles. Moreover, known connection articles require many manual steps for the fixing to the profiles by an operator, with an entailed slowness in assembling. Moreover, the need to perform various manual steps entails in some cases a lack of safety, owing to profiles not completely locked or not fixed in a workmanlike manner.
- Therefore, the present disclosure stems from the technical problem of providing a connection article for a support frame of a false ceiling allowing to overcome the drawbacks mentioned above with reference to the known art, and/or attain further advantages or features.
- Such a technical problem can be solved by a support frame for supporting a false ceiling according to
claim 1 and a method according toclaim 10. Specific embodiments of the subject-matter of the present disclosure are set forth in the corresponding dependent claims. - In particular, the connection article according to the present disclosure is a C- or U-shaped sheet metal body (comprising a top wall and two side walls) and intended to be arranged straddling a pair of metal profiles cross-like placed the one on the other, i.e., it is a body intended to be arranged astride or straddling in the region of a crossing of a upper metal profile and a lower metal profile, so as to connect the two profiles in a crossed condition. In particular, the top wall of the connection article rises above, or lies on, lateral sides of the upper metal profile, whereas the side walls of the same connection article are partially inserted in the lower metal profile, and cooperate with end edges of the lateral sides of the lower metal profile.
- Each of the side walls of the connection article, according to the present disclosure, has lateral projections in the region of end areas. Such projections, when the article is arranged astride the metal profiles, are able to interfere (with a stable engagement) with opposite edges of the lower metal profile, so as to lock or trap the upper metal profile between the top wall of the connection article and the lower metal profile itself.
- Moreover, the sheet metal body includes two finnings, on each side of the top wall, in which each finning is comprised between the side walls. In particular, each finning defines, with the respective side wall, a seat, recess or niche. The edge of each of the lateral sides of the upper metal profile is stably received into the niche, and interferes with a corresponding finning of the connection article.
- In practice, the lower metal profile is engaged by, or interferes with the projections of the side walls of the connection article, whereas the upper metal profile is locked between the top wall of the connection article, where it cooperates with the finnings, and the lower metal profile.
- The edges of the upper metal profile, by being received into the niches and interfering with the finning, prevent a collapse of the upper metal profile on itself, i.e. a closing of the lateral sides of the upper metal profile the one towards the other.
- This locked/trapped position allows a stable connection between the metal profiles, and prevents movements of the components in a vertical direction.
- It has to be noted that, in such configuration, a relative sliding of the upper metal profile, the lower metal profile and the connection article may be allowed in order to modify a pitch in a grid made of plural metal profiles placed cross-like.
- In an embodiment, in order to insert at least partially the side walls of the connection article in the lower metal profile, the lower metal profile is slightly spread apart elastically during insertion, so that after an elastic return the lateral sides of the lower metal profile cooperate with the projections of the connection article. To foster this step, said projections are bent and cambered towards the outside, so that the lateral sides of the lower metal profile can slide thereon during the spreading apart.
- In an embodiment, the connection article is sized so that a distance between the pairs of side walls is less than a distance between the lateral sides of the upper metal profile. For instance, the distance between the pairs of side walls is measured at the height of the above-mentioned seat or niche. This feature allows, when the connection article is placed on the metal profiles, to flex the sides of the upper metal profile the one to the other, so as to ensure more stable contact with the connection article.
- Even more specifically, in an embodiment, the above-mentioned distance between the pairs of side walls of the connection article is selected less than a distance between the lateral sides of the upper metal profile, so that the upper metal profile defines a convex-radius camber area facing the lower metal profile, said camber area being in pressing contact against said other metal profile.
- It will be understood that, in accordance to this embodiment, when the connection article is placed on the metal profiles the lower metal profile is trapped or locked, both by the projections of the connection article, and by the camber area of the upper metal profile pressing towards the lower metal profile. This solution can improve stability of the connection and further prevent plays of the components in a vertical direction.
- Other features and the operation modes of the subject-matter of the present disclosure will be made evident from the following detailed description of preferred embodiments thereof, given by way of a non-limiting example.
- It is also to be understood that all possible combinations of embodiments described with reference to the following detailed description fall within the scope of the present disclosure.
- Reference will be made to the figures of the annexed drawings, wherein:
-
Figure 1 shows a perspective view of a connection article according to the present disclosure; -
Figure 2 shows a side view of a connection article according to the present disclosure, from a first angle; -
Figure 3 shows a side view of a connection article according to the present disclosure, from a second angle; -
Figure 4 shows a perspective view of a connection article and of two metal profiles in a first assembled condition; -
Figure 5 shows a perspective view of the connection article and of two metal profiles in a second assembled condition; -
Figure 6 shows a view from one side, in the direction of arrow VI ofFigure 5 , of a portion of a support frame according to the present disclosure. - With reference to the figures, a connection article for a support frame of a support structure of a false ceiling according to the present disclosure is denoted by
reference number 1. A support or load bearing frame of a support structure of a false ceiling is denoted byreference number 100 and comprises a plurality ofmetal profiles Figures 4-6 ). In practice, in thesupport frame 100,metal profiles 2a of a first set are arranged in parallel, evenly spaced the one from the other, andmetal profiles 2b of a second set are arranged in parallel, evenly spaced the one from the other. Themetal profiles 2a of the first set are overlapped to the second set ofmetal profiles 2b along a direction orthogonal to the first set. - It follows that in the grid-like configuration each
metal profile 2a of the first set, which lies above, or upper metal profile, is arranged in a configuration overlapped and crossed, or cross-like, to at least onemetal profile 2b of the second set, which lies below, or lower metal profile. - More specifically, the
connection article 1 is intended to be arranged straddling the twometal profiles metal profiles - The
connection article 1, once installed on-site, is therefore, e.g., arranged with an orientation like that visible inFigures 1 ,4-6 . It follows that any spatial reference in the present description and in the claims hereinafter, such as, e.g., "top", "above", "upper", "bottom", "lower", "horizontal", "vertical", is to be understood as merely by way of example, with reference to the above-mentioned orientation. - The
connection article 1 is asheet metal body 10 bent and including twoside walls 12 connected by means of first bends P1, for instance forming an angle β greater than 90° (Figure 3 ), to atop wall 11. In practice, theside walls 12 are portions of thesheet metal body 10 facing and opposed to each other. - In the illustrated embodiment, the
side walls 12 are slightly spread apart with respect to a vertical, for instance of an angle α of 5°, to form said angle β of 95°. In other words, theside walls 12 are in a mutually converging position. Thetop wall 11 is interposed between theside walls 12. - In the exemplary embodiment, referring specifically to
Figure 1 , thesheet metal body 10 has a shape substantially similar to an upturned U or C. In particular, thetop wall 11 forms the base of the U or C, whereas the twoside walls 12 are the two end sections of the U or C. - In the exemplary embodiment, the peculiar shape of the
sheet metal body 10, and in particular the arrangement of thetop wall 11 and of theside walls 12, define an internal housing A intended to receive, as will be seen hereinafter, one of the twometal profiles 2a. - In the exemplary embodiment, moreover, referring specifically to
Figures 2 and3 , theconnection article 1 is symmetrical with respect to a longitudinal plane, identified in the figures by a dashed line denoted by reference letter L, orthogonally intersecting the twoside walls 12, and is also symmetrical with respect to a transversal plane, identified in the figures by a dashed line denoted by reference letter T, crossing the centre of the housing A. - In particular, the longitudinal plane L and the transversal plane T actually correspond, in the example, to symmetry planes.
- In the exemplary embodiment, each
side wall 12 includes, starting from bend P1, acentral portion 12a, which therefore is contiguous to thetop wall 11, and anend portion 13, corresponding to the edge area of theside wall 12 far from thetop wall 11. More in particular, referring specifically toFigure 2 , theend portion 13 has a lateral extension greater than thecentral portion 12a and, sideways, definescoupling projections 17, which therefore project from opposite sides with respect to the longitudinal plane L. - In practice, the
end portion 13 is wider in a lateral direction starting from the longitudinal plane L. - In the exemplary embodiment, the
sheet metal body 10 includes twocoupling projections 17 in the region of each side of theend portion 13. In particular, thesheet metal body 10 overall includes fourcoupling projections 17. - In an exemplary embodiment, like that visible in
Figure 1 , it is possible to note the peculiar configuration of thesheet metal body 10 in which theend portion 13 is bent towards an area external to the housing A. In practice, eachend portion 13 is a free-end edge bent towards the outside of thesheet metal body 1 and wider than thecentral portion 12a. - In the exemplary embodiment illustrated, the
end portion 13 is not only bent but also rounded or cambered with a concavity facing upwards in the figures, i.e., on the side of thetop wall 11. It follows that also thecoupling projections 17 have a shape curved upwards, i.e. with the concavity facing towards, or on the side of thetop wall 11. - In other words, the
end portion 12b is bent cup-like. - More specifically, the
end portion 13 comprises a connectingpart 12b coplanar with thecentral portion 12a and abent end part 12c. - Between the connecting
part 12b and theend part 12c a second bend P2, having an angle of about 90°, is provided. - In the exemplary embodiment, the
sheet metal body 10 includes twofinnings 16. In particular, thefinnings 16 are sheet metal portions projecting from thetop wall 11 on each side of thetop wall 11 in an area comprised between theside walls 12. In the exemplary embodiment, thefinnings 16 extend along a direction substantially parallel to the longitudinal plane L and orthogonally to the plane T. - In the example illustrated, each finning 16 is separated from the
top wall 11 by third bends P3, for instance 90° ones. More specifically, in the exemplary embodiment illustrated thefinnings 16 are substantially trapezoidal-shaped (trapezium-shaped) sheet metal portions, bent downwards with respect to the top 11, on the side of thecoupling projections 17 or towards the housing A. - It is observed that the trapezoidal shape of the
finnings 16 defines, on each side of arespective finning 16, a respective seat, niche, orrecess 160. - In the exemplary embodiment, the
sheet metal body 10 further includes two reinforcingribs 15. In particular, the reinforcingribs 15 are essentially drawn sections of thesheet metal body 10. More specifically, theribs 15 have a rounded or curved section and extend along thetop wall 11, on thecentral portion 12a and towards thecoupling projections 17. In particular, the tworibs 15 extend parallel on thetop wall 11, on thecentral portions 12a of theside walls 12 to the connectingpart 12b, and bend in a direction diametrically opposite to the longitudinal plane L to end each in the region of thecoupling projections 17. - Moreover, in the exemplary embodiment it is observed that the
sheet metal body 10 includes two reinforcing drawnsections 14. In particular, the drawnsections 14 are located in the region of the first bends P1, and are essentially sink marks or depressions, or hollows, located in the region of the bends P1. More specifically, the drawnsections 14 are located in a median zone of the bends P1 and define grip areas for thesheet metal body 10. - Referring to
Figure 4 and toFigure 5 , hereinafter it is described each of the twometal profiles metal profile bottom wall 22 and twolateral sides 21. In the exemplary embodiment, themetal profile cavity 24 of the U facing upwards. - The
bottom wall 22 connects to theside walls 21 by means ofcorners 23. - Each
side wall 21 ends with abent edge 20, in the example rounded, which, in the example, is rounded. In particular, thebent edge 20 is obtained by bending thelateral side 21 onto itself. More specifically, the bending faces thecavity 24 of themetal profile bent edges 20 define a projection oriented towards thecavity 24 of themetal profile - According to an aspect of the present disclosure, a distance D between the pairs of
side walls 12 of theconnection article 10 is less than a distance between thelateral sides 21 of the metal profile, i.e. is less than the width of thecavity 24, width that is measured along a direction orthogonal to the longitudinal axis Z1, Z2. - In an exemplary embodiment, as the one illustrated, the distance D between the pairs of
side walls 12 is measured in the region of a connection zone between eachside wall 12 and thetop wall 11, in the region of the first bends P1 or of the niches/seats 160. - Thus, when the connection article is arranged astride of or straddling a
metal profile side walls 12 of theconnection article 10 embrace from the outside the correspondinglateral sides 21 of themetal profile sides 21 in a converging direction, thebottom wall 22 of themetal profile camber area 30 substantially central and facing downwards. (Figure 6 ) - It has to be observed that, in the configuration illustrated, the upper metal profile, the lower metal profile and the connection article are joined to each other so as not to prevent a sliding in the longitudinal direction.
- Referring to
Figure 4 and toFigure 5 , hereinafter it is described a step of connecting and fixing between theconnection article 1 and themetal profiles Figure 4 , the two metal profiles are arranged in a relationship overlapped the one to the other, both with thecavity 24 of the "U" facing upwards. More specifically, as mentioned, themetal profiles - With the
metal profiles connection article 1 is inserted on theupper metal profile 2a so that the housing A be facing thecavities 24. - The
connection article 1 is arranged straddling so as to embrace theupper metal profile 2a. In particular, thebent edges 20 and the lateral sides 21 of theupper metal profile 2a are received inside the housing A of theconnection article 1. - The
connection article 1 is inserted with a certain tilt with respect to the horizontal, and in particular with theside walls 12 tilted with respect to the lateral sides 21, as illustrated inFigure 4 . In other words, theconnection article 1 is inserted so that the longitudinal plane L be tilted with respect to the lateral sides 21 of thelower metal profile 2b. - In this configuration, the two
coupling projections 17 of theside wall 12 lying lower are inserted first, under thebent edge 20 of thelower metal profile 2b, whereas the twocoupling projections 17 of theopposite side wall 12 are rested above theother edge 20 of the samelower metal profile 2b. The respectivebent edges 20 of the other metal profile, i.e. of theupper metal profile 2a, are received into therespective seats 160 of theconnection article 1. The configuration described hereto is visible inFigure 4 . - From this position, a downwards pressure is applied on the
connection article 1, in the region of thetop wall 11, towards themetal profiles coupling projections 17, favoured in the exemplary embodiment by the respective rounded and cambered shape, slide and slip on theedges 20. At the same time, the lateral sides 21 of the lower metal profile broaden out or move away the one with respect to the other, until obtaining the desired coupling. - More specifically, following the broadening out of the
bent edges 20, referring now toFigure 5 , thecoupling projections 17 pass over thebent edges 20 of thelower metal profile 2b. In particular, in this configuration the fourcoupling projections 17 of theconnection article 1 lie below thebent edges 20 of thelower metal profile 2b. Moreover, it is noted that in said configuration theedges 20 of theupper metal profile 2a are received into therespective seats 160, so as to interfere with thefinnings 16, and be locked there. - It has to be noted that in this position it is prevented a collapse of the
lateral sides 21 of theupper metal profile 2a, the one towards the other one. - Moreover, in an embodiment as the one illustrated, when each of the two
coupling projections 17 engages with a respectivebent edge 20 of thelower metal profile 2b, the lateral sides 21 of theupper metal profile 2a are forced to adhere to theside walls 12 of the connection article and thebottom wall 22 of the upper metal profile bends to form acamber area 30, in which said camber area presses against thebent edges 20 of thelower metal profile 2b. - More specifically, when each of the two
coupling projections 17 engages with a respectivebent edge 20 of thelower metal profile 2b and eachedge 20 of theupper metal profile 2a is received into the niche orseat 160 of theconnection article 1, thebottom wall 22 of theupper metal profile 2a bends and creates a pressing contact with thelower metal profile 2b. - It is pointed out that, in the exemplary embodiment, when each of the
coupling projections 17 is in a position, that is when the fixing has been successfully concluded, a peculiar sound (click) is heard, which can confirm that the fixing of theconnection article 1 to themetal profiles - The article for false ceiling according to the present disclosure can improve the modes of assembly between article for false ceiling and metal profiles, without vibrations. In particular, the shape and structure of the coupling projections of the article for false ceiling according to the present disclosure allow a quick, simple and safe coupling of article for false ceiling and metal profiles.
- Moreover, according to some aspects of the present disclosure, the peculiar cambered and rounded shape of the coupling projections and their strength enable the coupling projections to elastically deform the side walls of the lower metal profile, by acting as a sort of wedge, and allowing to quickly obtain a connection between the connection article and the metal profiles.
- In addition, thanks to the peculiar shape of the housing and to the solidity of the coupling projections, the article for false ceiling is perfectly integral to the metal profiles, both thanks to the constraints deriving from the coupling of the coupling projections on the edges of the lower metal profile, and thanks to the constraints deriving from the receiving, inside the housing, of edges and side walls of the upper metal profile.
- Therefore, such a configuration can allow to minimize the risk that on-site plays or vibrations be generated between metal profiles and article for false ceiling, and can further prevent that the metal profiles be subject to deformations on-site.
- In particular, the peculiar shape of the housing and of the finnings can allow to lock in position the side walls and the edges of the upper metal profile. Essentially, the upper metal profile can keep a constant contour and section, remarkably increasing the capacity.
- Moreover, in an embodiment, the distance between the side walls, e.g. measured between the first bends, is less than the distance between the lateral sides of the metal profile.
- This causes, by applying a certain pressure on the top wall of the connection article, a flexing of the lateral sides or shoulders to occur in the region of both edges of the upper metal profile.
- The result of this elastic deformation of the upper metal profile manifests itself in a (convex-radius) camber towards the point of contact with the edges of the lower metal profile, creating a recovery of plays between the two metal profiles, the upper and the lower one.
- In fact, the upper metal profile is held stationary by the edges of the lower metal profile, which under the action of the projections of the connection article push upwards, and by the top wall and the finnings of the connection article, which pushes downwards. The lower metal profile is held stationary by the projections of the connection article, which push upwards, and by the camber area which pushes downwards.
- In practice, a spring structure is obtained in the region of the bottom wall of the upper metal profile that compresses the lower metal profile, all in a single assembly movement concluding with the full rotation of the connection article on the two orthogonally overlapped profiles.
- This is obtained without necessarily providing further interference-recovering contrivances, and with a final and reliable coupling ensured by the end-of-step "click".
- In practice, it results that the three components (connection article, upper metal profile, lower metal profile), though sliding towards each other to facilitate the steps of centring the required pitch, can be integral as one piece. The subject-matter of the present disclosure has hereto been described with reference to preferred embodiments thereof. It is understood that there may be other embodiments referable to the same inventive concept, all falling within the protective scope of the claims set forth hereinafter.
Claims (11)
- A support frame (100) of a structure for supporting a false ceiling, the support frame (100) including a combination of two cross-like overlapped metal profiles (2a, 2b) and a connection article (1) suitable for connecting the two metal profiles (2a, 2b),
said connection article (1) including a sheet metal body (10) having a pair of opposed side walls (12), and a top wall (11) interposed between the side walls (12) to define a housing (A), wherein each of the side walls (12) defines a first bend (P1) with the top wall (11), and wherein each side wall (12) includes, starting from the first bend (P1), a central portion (12a) and an end portion (13), wherein the end portion (13) has a lateral extension greater than the central portion (12a) and, sideways, defines coupling projections (17), and wherein the sheet metal body (10) includes two finnings (16), each projecting from the top wall (11) on each side of the top wall (11) in an area comprised between the side walls (12), each finning (16) defining, with a respective side wall (12), a niche (160),
wherein each metal profile (2a, 2b) includes a bottom wall (22) and lateral sides (21), and wherein said bottom wall (22) and said lateral sides (21) define a cavity (24), said metal profiles (2) being arranged cross-like and overlapped the one on the other in an area of crossing, both said cavities (24) being facing the housing (A) of the connection article (1),
wherein a metal profile (2a) lying above in the area of crossing, or upper metal profile, is received inside the housing (A) and edges (20) of the lateral sides (21) of said upper metal profile (2a) are in engagement into the respective niches (160) of the connection article, and wherein said coupling projections (17) of the connection article (10) are in engagement with respective edges (20) of the lateral sides (21) of the other metal profile (2b) lying below in the area of crossing, or lower metal profile, and wherein the lateral sides (21) of the upper metal profile (2a) are forced into a converging position, and characterised in that
in such condition the bottom wall (22) of the upper metal profile (2a) has a camber area (30) facing the lower metal profile (2b), said camber area (30) being in pressing contact against said lower metal profile (2b). - The support frame (100) according to claim 1, wherein each end portion (13) is an edge of the sheet metal body (10) at least partially bent towards an area external to the housing (A) of the sheet metal body (1).
- The support frame (100) according to claim 1 or 2, wherein the end portion (13) is an at least partially rounded or cambered edge of the sheet metal body (10).
- The support frame (100) according to any one of the preceding claims, wherein each side wall (12) forms an angle greater than 90° with the top wall (11).
- The support frame (100) according to any one of the preceding claims, wherein the side walls (12) are in a mutually converging position.
- The support frame (100) according to any one of the preceding claims, wherein a third bend (P3) is interposed between each finning (16) and the top wall (11).
- The support frame (100) according to any one of the preceding claims, wherein each finning is trapezium-shaped.
- The support frame (100) according to any one of the preceding claims, wherein the sheet metal body (10) includes at least two reinforcing ribs (15), said ribs (15) being defined by drawn sections obtained in the sheet metal body (10), said ribs extending along the top wall (11), on the central portion (12a) and to the coupling projections (17).
- The support frame (100) according to claim 1, wherein the lateral sides (21) of the upper metal profile (2a) adhere to the side walls (12) of the connection article (1).
- A method of fixing two metal profiles (2a, 2b) by a connection article of a support frame (100) according to any one of the claims 1 to 9, the method comprising the steps of- overlapping cross-like the two metal profiles (2a, 2b) so that the one of the two metal profiles (2a), or upper metal profile, be arranged above the other one of the metal profiles (2b), or lower metal profile;- placing the connection article (1) straddling the upper metal profile (2a) so that said upper metal profile (2a) be partially received inside the housing (A),- tilting the connection article (1) so that the side walls (12) of the connection article (1) be tilted with respect to the lateral sides (21) of the lower metal profile (2b),- inserting two coupling projections (17) under a respective edge (20) of a lateral side (21) of the lower metal profile (2b) and resting other two coupling projections (17) on the opposite side on a respective edge (20) of a lateral side (21) of the lower metal profile (2b);- applying a pressure on the top wall (11) towards the metal profiles (2a, 2b), until the other two coupling projections (17) resting on the edge (20) pass over said edge (20) and engage with said edge (20), and until the edge (20) of the upper metal profile (2a) is received into the respective niche (160) of the connection article and interferes with the finning (16), characterised in that when each of the two coupling projections (17) engages with a respective edge (20) of the lower metal profile (2b), the bottom wall (22) of the upper metal profile (2a) bends to form a camber area (30), wherein said camber area (30) presses against the metal profile (2b).
- The method according to claim 10, wherein when each of the two coupling projections (17) engages with a respective edge (20) of the lower metal profile (2b) and the bottom wall (22) of the upper metal profile (2a) bends, the lateral sides (21) of the upper metal profile (2a) are forced into a converging position.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11175393.5A EP2551419B1 (en) | 2011-07-26 | 2011-07-26 | A connection article for a support frame of a false ceiling and method of installation |
PCT/IB2012/053305 WO2013014552A1 (en) | 2011-07-26 | 2012-06-28 | A connection article for a support frame of a false ceiling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11175393.5A EP2551419B1 (en) | 2011-07-26 | 2011-07-26 | A connection article for a support frame of a false ceiling and method of installation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2551419A1 EP2551419A1 (en) | 2013-01-30 |
EP2551419B1 true EP2551419B1 (en) | 2021-01-27 |
Family
ID=46582041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11175393.5A Active EP2551419B1 (en) | 2011-07-26 | 2011-07-26 | A connection article for a support frame of a false ceiling and method of installation |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2551419B1 (en) |
WO (1) | WO2013014552A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU175702U1 (en) * | 2017-10-18 | 2017-12-15 | Хомик Юрий Ростиславович | SUSPENSION FOR FACING CEILINGS AND INTERROOM PARTITIONS |
MX2022007851A (en) * | 2019-12-26 | 2022-07-19 | Yoshino Gypsum Co | Clip, ceiling base, and method for constructing same. |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3048946C2 (en) * | 1980-12-24 | 1984-09-27 | Hans-Rainer 5800 Hagen Wichert | Connector for two carrier rails in a suspended ceiling |
DE9304348U1 (en) * | 1992-12-01 | 1993-05-13 | Vogl, Erich R., 8535 Emskirchen, De | |
DE4327252A1 (en) * | 1993-08-13 | 1995-02-16 | Richter System Gmbh & Co Kg | Sheet metal part with bead |
DE29606746U1 (en) * | 1996-04-13 | 1996-06-27 | Richter System Gmbh & Co Kg | Cross connector for CD rails |
DE19753711C2 (en) * | 1997-12-04 | 2001-09-13 | Huwer Kg | Cross connector |
DE20215863U1 (en) * | 2002-10-15 | 2002-12-19 | Knauf Westdeutsche Gips | Device for connecting two rails |
-
2011
- 2011-07-26 EP EP11175393.5A patent/EP2551419B1/en active Active
-
2012
- 2012-06-28 WO PCT/IB2012/053305 patent/WO2013014552A1/en active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
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EP2551419A1 (en) | 2013-01-30 |
WO2013014552A1 (en) | 2013-01-31 |
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