EP3456897A1 - Section bar for support structures, or support structures of false ceilings - Google Patents

Section bar for support structures, or support structures of false ceilings Download PDF

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Publication number
EP3456897A1
EP3456897A1 EP18195057.7A EP18195057A EP3456897A1 EP 3456897 A1 EP3456897 A1 EP 3456897A1 EP 18195057 A EP18195057 A EP 18195057A EP 3456897 A1 EP3456897 A1 EP 3456897A1
Authority
EP
European Patent Office
Prior art keywords
metal bar
bar
profile
engagement
niches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18195057.7A
Other languages
German (de)
English (en)
French (fr)
Inventor
Giuseppe Cipriani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3456897A1 publication Critical patent/EP3456897A1/en
Withdrawn legal-status Critical Current

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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
    • 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
    • E04B9/22—Connection of slabs, panels, sheets or the like to the supporting construction
    • E04B9/24—Connection of slabs, panels, sheets or the like to the supporting construction with the slabs, panels, sheets or the like positioned on the upperside of, or held against the underside of the horizontal flanges of the supporting construction or accessory means connected thereto
    • E04B9/26—Connection of slabs, panels, sheets or the like to the supporting construction with the slabs, panels, sheets or the like positioned on the upperside of, or held against the underside of the horizontal flanges of the supporting construction or accessory means connected thereto by means of snap action of elastically deformable elements held against the underside of the supporting construction

Definitions

  • the present disclosure refers to a bar for supporting structures, or bearing structures, of false ceilings, in other words supporting structures for slabs or panels, for example made of plasterboard, placed underneath an actual ceiling.
  • the supporting structures for false ceilings comprise a support frame intended to the support or bearing of the panels or slabs.
  • the bars are connected to the ceiling by means of a so-called hanger, steel bars or other engagement accessories.
  • Each slab has width L1 and length L2 defined by manufacturing standards.
  • the support frame includes metal bars, preferably but not limited to "C” or "U” shape (in other words, bars shaped by one lateral wall and two opposite sides or lateral shoulders).
  • the metal bars are cross overlaid to ideally form a grid, which constitutes a floor for the plasterboard slabs CG of the false ceiling.
  • a principal bar I placed above and a secondary bar II, is provided.
  • the latter bar is hence placed underneath the grid.
  • the principal bar has niches and recesses intended to receive the wings of the "C" of the secondary bar ( figure 2 ).
  • the secondary “C” bar has width 50mm and the pitch P, which is intended to be the distance between the centre of two pairs of niches intended to engage, or the pitch of a so-called engagement zone, is precisely of 50mm.
  • engagement zone the zone which comprises a couple of subsequent niches each intended to receive a corresponding wing or edge of the "C" of a secondary bar.
  • a traditional assembly system of the false ceiling involving the use of those profiles is defined in figure 1 .
  • the author of the present disclosure acknowledges that there is a match between the pitch of the engagement zone and the width of the secondary bar II depending of the dimension of the width L1 of the plasterboard slab CG.
  • this pitch is defined by the width L1 of the plasterboard slabs which are applied to form the false ceiling.
  • Such slabs have width L1 of 1250 mm and length L2 variable from 2000 to 2500 or 3000.
  • the pitch of the engagement zone is equal to 50 mm in order to have the lateral edges of each slab, when each slab is supported on the grid, supporting onto one half of the secondary bar II of the grid G as shown in figure 1 .
  • the support allows an overall stability of the structure.
  • the primary snap bar is not used because the secondary bar used for false ceilings has a width of 60 mm, therefore impossible to be assembled on a snap bar with a pitch 50mm. Even if a wider pitch equal to the width of the secondary bar 60 mm was used, considering the width of 1250 mm and the fact that 60 is not a divisor, it would have not been possible to be assembled the edge of the slab onto a secondary bar of the grid.
  • connection accessories such as that in figure 2 are used, to join a secondary bar of width 60 mm with a primary bar.
  • the connection accessory of figure 2 is, in particular, intended to connect and to fix the metal bars together, at the crossing zone between two metal bars in the grid configuration.
  • the advantages for the first solution are considerable because the shape of the accessory is implemented into the primary profile, allowing to obtain a saving in terms of number of components, easy assembly, assembly speed and positioning at exact pitch, eliminating the chance of human error during placing.
  • connection accessories do not need many manual operations to be fixed to the profiles by an operator, with a resulting delay of assembling. Furthermore, the need to perform many manual operations implies in some instances a lack of safety, due to profiles not completely locked or not fixed according to the best practise.
  • the present disclosure hence begins from the position of the technical problem to provide a snap profile metal bar to allow an efficient connection to another bar in a support frame for false ceiling and which, in general, allows to overcome the abovementioned drawbacks with reference made to the state of art and/or to achieve further advantages or features.
  • an engagement bar is proposed wherein the pitch between two engagement zones is greater than the engagement width, i. e. the width of the secondary bar, and which is a pitch equal to 100 mm or multiples of 100.
  • the value of 100 mm is to be intended as much an exact value as with a constructing tolerance up to 10 mm, preferably up to 5 mm and more preferably up to 3 mm.
  • the pitch is no longer bound to the width of the secondary bar. As a consequence, a grid with a broader mesh width may be achieved.
  • the mesh width can be broaden by the chance of taking advantage of not only the width of the plasterboard slabs of the false ceiling but even the length.
  • the plasterboard slab may be oriented as a length orientation. Such orientation is orthogonal with respect to that of the state of art.
  • the slab is arranged with length parallel to the longitudinal direction of the snap profile metal bar.
  • the pitch may be bound to the length, or long side, of the plasterboard slabs, rather than to the width, or short side, of the slabs.
  • the snap profile bar 2a is a body lengthened in a longitudinal direction, has "C” or “U” shape or section and is intended to be connected to an underneath bar, called secondary and identified by the reference number 2b.
  • a plurality of primary bars and secondary bars are cross overlaid, to define a grid configuration (partially observable in figure 4 ) or support frame 100 for the support of slabs 200, preferably made of plasterboard.
  • the snap profile metal bars 2a of a first series, or primary metal bars are in parallel arranged one regularly spaced from each other and metal bars 2b of a second series, or secondary metal bars 2b, are in parallel arranged one regularly spaced from each other.
  • the snap profile metal bars 2a of a first series, or primary bars are overlaid to the second series of secondary metal bars 2b along an orthogonal direction to the first series.
  • each snap profile metal bar 2a of the first series, that is placed above, or upper metal bar is arranged in a cross and overlaid manner, or as a cross, to at least a metal bar 2b of the second series, that is placed underneath, or lower metal bar.
  • the snap profile metal bar 2a includes a base wall 22 and two lateral sides 21, of which only one is observable in the drawings.
  • the base wall 22 and the two lateral sides 21 define a "C" or "U” shape profile with a cavity also non-observable in the drawings.
  • Even the second bar 2b includes a base wall 122 and lateral sides 121 that realize a cavity 124.
  • Each of the lateral sides 21 of the snap profile bar 2a has a plurality of engagement zones 26 that follows each other in sequence or subsequently along a longitudinal direction.
  • Each engagement zone 26 includes at least two niches or recesses 28.
  • the lateral sides 121 of the second bar 2b are received in the corresponding niches of the engagement zone 26 of the snap profile metal bar 2a.
  • An engagement opening A is defined as a distance comprised between two niches or recesses 28 of the same engagement zone 26.
  • the engagement opening A corresponds to the width or width of the secondary bar 2b.
  • a pitch P of the snap profile metal bar 2a is defined as a distance or interaxle spacing along a longitudinal direction of the snap profile 2a between a centre of an engagement zone 26 comprised between the two niches 28 and a centre comprised between the two niches 28 of an engagement zone 26 which niches are subsequent or adjoining to the sequence.
  • the pitch P is also intended as the distance or interaxle spacing between the centre of a first secondary bar 2b and the centre of a subsequent secondary bar 2b adjoining to the first one.
  • the pitch P between two subsequent engagement zones 26 is of 100 mm or multiples of 100 mm.
  • the pitch is not equal to the width of the engagement zone 26, but greater than that. It implies that, in the snap profile bar according to the present disclosure, the pitch P is bound to the engagement width, and hence to the width or width of the second bar.
  • the plasterboard slab 200 is oriented according to an orientation of length L2, orthogonal to that of state of art.
  • the length L2 of the slab 200 is exploited for the support of the slab at a secondary bar.
  • the standard length of the slab usually is 2000, 2500 or 3000 mm.
  • the pitch P between two subsequent engagement zones is chosen in such a way to be a divisor of 2000mm, 2500 mm or 3000 mm, for example 100 mm.
  • the pitch P between two subsequent engagement zones is 100 mm in order to allow the support of a slab in the direction of the length L2.
  • the length values of 2000 mm, 2500 mm or 3000 mm allow an operating space in the aforementioned clearance of the pitch broader than the standard width of 1250 mm of the slabs 200.
  • the length L2 of the slab for example 2000 mm
  • the length L2 of the slab can be exploited and may be hence fixed even a bar having width value of 60 mm or of any other value, since the width of the secondary bar 2b is no longer important.
  • the pitch P is a divisor of the length L2 of slab 200, and the value of 100 mm or its multiples may be a divisor of such length L2.
  • such a snap bar 2a allows to use a 60 mm long bar 2b and to realize a system of false ceiling and to use plasterboard slabs of 1250mmx2000 or 1250x2500 or 1250x3000.
  • each of the lateral sides 21 comprises a side zone or side portion 30 not intended to engage and interposed between two subsequent engagement zones 26.
  • the side portion 30 is prominent with respect to said two subsequent engagement zones 26, and allows to provide structural strength to the bar.
  • the snap profile bar 2a has a particular joint configuration without any operating space that ensures the joining between the primary bar with the secondary one to be liable and stable (without vibrations).
  • the engagement zone has a profile that allows strong engagement without high operating spaces.
  • the niche 28 has a substantially triangular profile, including a base side 32 parallel to a longitudinal direction of the snap profile bar 2a and an oblique side 34 extended along an oblique direction with respect to said longitudinal direction. The oblique direction of both the niches 28 of the engagement zone 26 is convergent towards the centre of the engagement zone 26.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP18195057.7A 2017-09-19 2018-09-18 Section bar for support structures, or support structures of false ceilings Withdrawn EP3456897A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000104697A IT201700104697A1 (it) 2017-09-19 2017-09-19 Profilato per strutture di sostegno, o strutture portanti, di controsoffitti

Publications (1)

Publication Number Publication Date
EP3456897A1 true EP3456897A1 (en) 2019-03-20

Family

ID=60991465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18195057.7A Withdrawn EP3456897A1 (en) 2017-09-19 2018-09-18 Section bar for support structures, or support structures of false ceilings

Country Status (2)

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EP (1) EP3456897A1 (it)
IT (1) IT201700104697A1 (it)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1918152A1 (de) * 1969-04-10 1970-10-15 Pgh Aufbau Verkleidung fuer Decken und Waende
DE3148777A1 (de) * 1981-12-09 1983-06-16 Nagelstutz & Eichler GmbH & Co KG, Bauelemente, 4353 Oer-Erkenschwick Abhaengbare rasterdecke, insbesondere bandrasterdecke
EP0985778A2 (en) * 1998-09-11 2000-03-15 Hunter Douglas Industries B.V. Curved building panel
WO2017042268A1 (en) * 2015-09-08 2017-03-16 Hunter Douglas Industries B.V. Carrier for a linear ceiling panel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1918152A1 (de) * 1969-04-10 1970-10-15 Pgh Aufbau Verkleidung fuer Decken und Waende
DE3148777A1 (de) * 1981-12-09 1983-06-16 Nagelstutz & Eichler GmbH & Co KG, Bauelemente, 4353 Oer-Erkenschwick Abhaengbare rasterdecke, insbesondere bandrasterdecke
EP0985778A2 (en) * 1998-09-11 2000-03-15 Hunter Douglas Industries B.V. Curved building panel
WO2017042268A1 (en) * 2015-09-08 2017-03-16 Hunter Douglas Industries B.V. Carrier for a linear ceiling panel

Also Published As

Publication number Publication date
IT201700104697A1 (it) 2019-03-19

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