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
  • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
  • E04B9/0428—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like having a closed frame around the periphery
• • 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
  • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
  • E04B9/0478—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like of the tray type
• • 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
  • E04B9/34—Grid-like or open-work ceilings, e.g. lattice type box-like modules, acoustic baffles
  • E04B9/36—Grid-like or open-work ceilings, e.g. lattice type box-like modules, acoustic baffles consisting of parallel slats
  • E04B9/363—Grid-like or open-work ceilings, e.g. lattice type box-like modules, acoustic baffles consisting of parallel slats the principal plane of the slats being horizontal
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
  • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
  • E04D3/36—Connecting; Fastening
  • E04D3/361—Connecting; Fastening by specially-profiled marginal portions of the slabs or sheets
  • E04D3/362—Connecting; Fastening by specially-profiled marginal portions of the slabs or sheets by locking the edge of one slab or sheet within the profiled marginal portion of the adjacent slab or sheet, e.g. using separate connecting elements
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B2103/00—Material constitution of slabs, sheets or the like
  • E04B2103/06—Material constitution of slabs, sheets or the like of metal

Definitions

• the present invention relates to a ceiling panel of the type defined in the introductory portion of claim 1.
• US Patents Nos 3 462 906 and 4 223 503 as well as British Patent No 1 249 765, among others, disclose examples of such ceiling panels, which are mounted side by side, and which form an underside covering for a ceiling over a room in the interconnected state.
• the individual panels are made of a metal material which has been machined by bending or rolling.
• the underside covering is typically supported by a supporting structure in the form of a system of supporting strips, which are arranged on the walls defining the room.
• the underside covering may moreover be adapted to carry a suitable thermal and/or acoustic insulation, e.g. in the form of insulation batts which are placed on the surface of the panels facing the ceiling.
• a common property of the known ceiling panels underlying the invention is that they are self-supporting and that they may be interconnected via complementary and elasti- cally deformable engagement areas arranged along the longitudinal edge sides of the panels.
• the own weight of each panel can also be transferred partly to the supporting structure via the adjoining panels.
• the engagement areas extend in the full length of the longitudinal edge sides of the panels, it is moreover possible to ensure a desired tightness of the underside covering against flame penetration and passage of smoke or other gases, which may e.g. be emitted from burning objects in the room below the underside covering.
• the object of the present invention is to provide an improved ceiling panel which inter alia provides concurrent favourable properties as regards all the below-mentioned aspects :
• the engagement areas allow transfer of forces from one ceiling panel to the next one
• a panel may be removed and mounted again without also having to remove one or more of the other panels
• the load-bearing capacity and integrity of the underside covering may be maintained for a relatively long time at high temperatures
• the tightness of the covering may be maintained for a relatively long time at high temperatures .
• first and second flange portions exhibit a respective inclined first part
• the entire flange portion will thus try to turn down toward the web portion of the ceiling panels.
• This provides a very reliable tightness of the joint, as at least the complementary engagement areas adjoining the web portion will be kept in intimate mutual contact.
• it is still poss- ible, in the normal state, to release a single panel from the other panels by affecting the panel concerned by an upwardly directed pressure impact that releases the locking engagement, e.g. to generate an elastic deformation of the flange portions whereby the locking engagement at one longitudinal side edge may be released.
• the one flange portion is formed with a locking section having a free edge extend- ing along the edge side at a maximum distance from the web portion of the panel, improved interlocking of two adjoining ceiling panels is achieved, as the stability of the locking section when subjected to the impact of a fire will tend to fail, i.e. the locking section will tend to deform by buckling because of the occurring com- pressive stresses which will be maximum in this area of the panel most remote from the web portion.
• the preferred embodiments provide a reduction in the vibration-caused noise, which frequently oc- curs when ceiling panels of the present general type are used onboard ships .
• the invention also relates to an underside covering pro- quizd by assembling a plurality of ceiling panels according to the invention.
• fig. 1 shows a cross-section through a panel
• fig. 2 shows two panels according to the invention which are connected in the engagement area
• fig. 3 illustrates the development in a fire where the joint is deformed
• fig. 4 shows the locking section in a deformed state in a fire
• fig. 5 shows an expedient edge panel for the mounting of the ceiling panels according to the invention.
• Fig. 1 shows a cross-section through a ceiling panel 1 according to the invention.
• the ceiling panel 1 has a web portion 5 with an upper side which, in the mounted state of the ceiling panel, faces an overlying ceiling, and a lower side which is intended to face an underlying room.
• the web portion 5, which forms the visible part of the ceiling panel in the room, is preferably plane, but may optionally be provided with a modest curvature. However, it will be appreciated that the web portion 5 defines an imaginary main extent plane for the ceiling panel, viz. a plane which is substantially parallel with the ceiling.
• the ceiling panel 1 preferably has a rectangular basic form with a longitudinal central area M, and the web portion 5 has longitudinal edge sides 8, 9 and transverse edge sides. Flange portions 20, 40 are arranged along each of the longitudinal edge sides 8, 9 and extend in the entire length of the panel 1.
• the shown ceiling panel is preferably made from a flat metallic plate workpiece, and the flange portions 20, 40 are provided by bending or similar working.
• the flange portions 20, 40 comprise complementary engage- ment areas by means of which two adjoining identical ceiling panels 1 may be interconnected.
• the engagement areas are generally designated by the reference numerals 21 and 41 in fig. 1 and thus comprise respective panel parts which extend longitudinally of the ceiling panel 1 in various mutual angles.
• the engagement areas 21, 41 are each formed approximately with the shape of an S which is inclined relative to a longitudinal plane H.
• the plane H extends perpendicularly to the main extent plane of the ceiling panel 1, and the angles defined below are calculated as measured relative to a plane perpendicular to the main extent plane in parallel with the plane H.
• the engagement area 41 consists of a first part 42 which extends upwards and away from the web portion 5 at an angle ⁇ of preferably about 12° relative to the plane H.
• the part 42 merges via a bend into a second part 44 which extends downwards back in the direction toward the web portion 5 at an angle ⁇ of preferably about 125°, and which, via a bend or constriction 45, merges into a third part 46, which extends upwards away from the central area M at an angle ⁇ of likewise about 12°.
• the third part 46 merges into a fourth part 48 which forms an angle ⁇ of preferably about 79° relative to the plane H.
• the fourth part 48 Before the fourth part 48 reaches an imaginary extension of the part 42, the fourth part 48, via a bend, merges into a fifth part 50, which extends upwards away from the web portion 5 at an angle ⁇ of about 12°.
• the engagement area 21 is likewise composed of a first part 22 which merges into a second part 24, which in turn merges into a third part 26 with an end portion 28 to form a nose 25, and that the overall course of these parts approximately corresponds to the course of the corresponding parts of the engagement area 41.
• the angles of the parts relative to the plane H are selected such that the angle x is greater than the angle x', and that the angle y' is greater than the angle y, thereby providing a clamping force upon assembly of two ceiling panels when the nose 25 is inserted into the constriction 45.
• the mentioned end portion may optionally be formed as a bend which merges into a rearwardly directed extension 29 which imparts a certain rigidity to the part 26. It will be appreciated from fig. 1 that angles ⁇ , ⁇ and ⁇ corresponding to the angles ⁇ , ⁇ and ⁇ in the engagement area 41 may be provided in the engagement area 21 as well .
• Fig. 2 shows two identical ceiling panels 1, 1' arranged side by side and assembled by the insertion of the engagement area 21' into the engagement area 41, i.e. by the insertion of the nose 25 into the constriction 45.
• the engagement areas 21 and 41 are preferably, but not necessarily shaped such that this insertion es- tablishes a clamping of the engagement area 21', one of the engagement areas being deformed elastically during the insertion.
• the insertion areas are moreover shaped so as to provide suspension of the ceiling panel 1' from the ceiling panel 1, thereby allowing vertical forces from e.g. the own weight of the panels to be transferred across the joint.
• the ceiling panel for covering a ceiling a plurality of the ceiling panels 1 are mounted side by side at a desired distance below the ceiling, as shown in fig. 2.
• a supporting structure in the form of e.g. supporting strips secured to the walls is arranged at a suitable height.
• the supporting structure is adapted to support and retain the transverse edge sides of the ceiling panels 1, as each ceiling panel thus extends as a self-supporting unit between two supporting strips, as well as preferably also the longitudinal edge sides of the outermost ceiling panels of the underside covering.
• an underside covering in e.g.
• the ceiling panels will typically have a length of about 3 metres, corresponding to the distance between two of the walls of the cabin, a width of about 0.3 metre and a height of the engagement area 21 of about 23 mm and of the engagement area 41 of about 25 mm.
• the ceiling panels are mounted singly side by side, with the nose 25 of a new ceiling panel being inserted into the constriction 45. It will moreover be seen from fig. 2 that the individual ceiling panels may easily be disas-muld from each other by applying an upwardly directed pressure along the left edge side 8 of the ceiling panel, thereby pressing the end portion 28 clear of the part 48 so that the nose 25 may be moved out of the constriction 45. By turning the ceiling panel it may then be moved clear of the adjoining ceiling panels and be removed.
• the underside covering In order to comply with the present and expected future regulations as regards restriction of the damage caused by a fire, it is necessary to construct the underside covering so that it is tight and thereby prevents passage of flames and smoke from the underlying room, and so that collapse of the ceiling panels is prevented for as long a time as possible at the elevated temperatures in the room. It has been found by fire tests that the present invention provides an extension of the time it takes before there is a real risk of collapse of the underside covering.
• FIG. 3 shows somewhat exagger- ated and schematically how the flange portion 40, as well as the flange portion 20 (not shown) with which the flange portion 40 is connected, is deformed in the course of a fire, and it will be seen how the inclination of the flange portions and the special S-shape of the engagement areas give rise to a downwardly directed turning of the entire joint during a fire load, and that this inclination increases gradually.
• the stated structure of the flange portions provides an increased resistance against separation forces in the joint between the panels in a fire and thereby against loss of integrity of the covering and thereby collapse of the covering, and, for another, an increased risk of the required tightness against flames and flue gases being lost.
• Fig. 5 shows an edge panel for use in connection with the mounting of ceiling panels according to the invention to form the underside covering.
• the edge profile is preferably shaped as a half-ceiling panel according to the invention, as the edge profile just comprises one S for connecting the edge profile with the adjoining ceiling panel, it being possible for the opposite longitudinal edge of the edge panel to be provided with a bend so that the longitudinal edge may be connected in a particularly expedient manner with the locking strip which extends from the supporting structure.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Mechanical Engineering (AREA)
• Building Environments (AREA)
• Finishing Walls (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=8094495

Family Applications (1)

Country Status (9)

Cited By (1)

Families Citing this family (10)

Citations (5)

• 1999
  • 1999-04-19 DK DK199900521A patent/DK199900521A/da not_active Application Discontinuation
  • 1999-04-27 TW TW088106698A patent/TW426781B/zh not_active IP Right Cessation
• 2000
  • 2000-04-18 WO PCT/DK2000/000198 patent/WO2000063504A1/en not_active Application Discontinuation
  • 2000-04-18 EP EP00920417A patent/EP1171673A1/en not_active Withdrawn
  • 2000-04-18 JP JP2000612576A patent/JP2002542411A/ja active Pending
  • 2000-04-18 AU AU41002/00A patent/AU4100200A/en not_active Abandoned
  • 2000-04-18 CN CN00806452A patent/CN1352720A/zh active Pending
  • 2000-04-18 KR KR1020017013359A patent/KR20020012173A/ko not_active Application Discontinuation
• 2001
  • 2001-10-18 US US10/000,045 patent/US20020083672A1/en not_active Abandoned

Patent Citations (5)

Also Published As

Similar Documents

Legal Events