EP0665406B1 - A work piece for a frame structure, a frame structure made of such a work piece and a method of producing such a frame structure - Google Patents

A work piece for a frame structure, a frame structure made of such a work piece and a method of producing such a frame structure Download PDF

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Publication number
EP0665406B1
EP0665406B1 EP95100394A EP95100394A EP0665406B1 EP 0665406 B1 EP0665406 B1 EP 0665406B1 EP 95100394 A EP95100394 A EP 95100394A EP 95100394 A EP95100394 A EP 95100394A EP 0665406 B1 EP0665406 B1 EP 0665406B1
Authority
EP
European Patent Office
Prior art keywords
tongue
fork
frame
folded
frame structure
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.)
Expired - Lifetime
Application number
EP95100394A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0665406A1 (en
Inventor
Jörgen Johansson
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.)
FAGERHULT AB
Original Assignee
FAGERHULT AB
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 FAGERHULT AB filed Critical FAGERHULT AB
Publication of EP0665406A1 publication Critical patent/EP0665406A1/en
Application granted granted Critical
Publication of EP0665406B1 publication Critical patent/EP0665406B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/101—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening permanently, e.g. welding, gluing or riveting

Definitions

  • the present invention relates to an element to make a frame structure and a frame structure which is manufactured from such an element as well as a method of manufacturing such a frame structure according to the preamble of main claim 1 and the first patent claims of said category respectively.
  • Such frame structures are used e.g. in connection with electrical light fittings, which are often designed to be recessed in a ceiling or wall opening.
  • Frame structure elements are already known and also frame structures, in which principally mitre cuts have been provided in the elements, which then are folded to the required shape and soldered or welded together in order to obtain a shape permanent frame.
  • Anti-dazzle screens with surrounding rim portions made in one piece of a sheet-like material are previously known by DE-A-2 916 331 and EP-A-0 522 480.
  • the object of the present invention is to simplify and improve the above-mentioned already known categories in such a way, that solely one element is used and that such an element can be produced in only one work operation and that the shaping can be done to obtain a shape permanent frame structure in a simple and reliable way.
  • frame structure refers in this context not only to a frame in the ordinary sense but also to any box-shaped or case-shaped construction, which can be triangular, rectangular, pentagonal, hexagonal etc.
  • the work piece is made of a metal and/or a plastic material,cardboard or the like. It may be completely surface-finished, before it is converted into a frame structure and/or after such a conversion.
  • the element suitably principally is a flat strip plate, which can be fed from a strip reel and be cut to the required length. Simultaneously with, before or after the cutting-off the element is die-cut or punched in the way shown in the drawings or in a similar way.
  • Ends 2 and 3 are thereby formed in their entirety, in the areas, where there, starting from longitudinal edge 4, primarily is a transversal shorter end surface 5 and 6 respectively.
  • End surface 5 suitably is provided with an indent 7, which is open in the axial direction, whereas end surface 6 suitably is provided with a projection 8, which is to dovetail in said indent. In this way the indent and the projection can, when later a frame structure will be formed, be introduced into each other and secure each other against mutual displacements, crosswise in the plane.
  • first mitre cuts 10 and 11 which extend so far across the width of the element, as corresponds to the width of a required frame plane side 21.
  • first mitre cuts 10 and 11 which extend so far across the width of the element, as corresponds to the width of a required frame plane side 21.
  • transversal end surfaces 12 and 13 respectively are in their turn formed, the width of which corresponds to the width or the height of an interior frame side or interior rim 30.
  • a lock tongue 14 extends in the axial direction, in the shoulder area of which there suitably is a e.g.
  • triangular opening 15 one side of which is in line with the respective end surface 12 and which is designed to facilitate and secure a precise bending roughly about said end surface with an angle of e.g. 180° or 90°, when the tongue has been introduced through an oblong hole 16, parallel to the other end surface 13, at a distance of e.g. a few millimeters from the last-mentioned end surface on the element.
  • the adjacent mitre cut can in this case end somewhat inside the end surface substantially in line with said oblong hole 16 and form a small recess 17, which maybe is an advantage during the following bending together of the element to a frame structure.
  • Mitre cuts 10 and 11 exist, but as further internal mitre cuts with designations 10' and 11', respectively, also within the elements, provided in an analogous way and distributed along the element, where the respective frame edge is to terminate and a new one is to start. However, in these cases the cuts coincide and form jointly a 90° angle, if a rectangular frame is to be made. From the point where the two cuts meet each other, a folding notch suitably extends e.g. in the form of a weak punching line or grooving 18 straight outwards to the adjacent longitudinal edge.
  • the two internal lateral surfaces are also provided in this case as a continuation of the last-mentioned mitre cut and designated 12' and 13'.
  • Tongues 14' which correspond to tongue 14, are provided in this case, but they extend in the opposite direction and can have a rectangular opening 15', the one side of which is in line with the respective internal lateral surface.
  • These tongues change then immediately before a projected continuation of folding notch 18 intoa lock fork 19, the ends of which, which are turned away from the tongue, end in the element material on the opposite side, where however there may be indent-shaped folding notche 20,21, the one side of which coincides with the respective internal lateral surfaces.
  • These two notches may be open in a transversal direction away from the folding notches.
  • the internal lateral surface section between the two fork ends can be provided with a projection 22, which is directed towards the fork web area and designed to, when the now described lock devices, designated 23 in their entirety, are folded, be introduced into the matching opening 15' and to in this way prevent relative movements of the inner frame sides.
  • the two fork ends can adjacent the two fork webs be provided with folding notches 24 of a type described above. These folding notches are in line with the respective folding notch 18.
  • that internal lateral surface, which supports tongue 14' at the second longitudinal edge 25 can be provided with a nib-shaped projection 26, designed to be introduced into the upper indent of said indents 20,21, when the element is folded to obtain a frame, and in this way to contribute to a prevention of the relative movements of the inner frame sides.
  • Fig. 3-7 show several folding processes for the continuous element in order to obtain a finished closed frame.
  • an outer rim 9 is folded about a folding notch 27, which possibly can be solely imaginary; i.e. a tool or a machine will entirely accomplish a folding or bending about and along a certain line.
  • the outer rim can project from the planar main frame side in any required angle, but the angle usually is 90°.
  • a line 28, which separates the main frame side from the inner frame side, may also be imiginary or constitute a folding notch.
  • Fig. 4 it is shown,that the inner frame sides on both sides of a lock device also have been formed, which also can be done simultaneously with the forming of the outer frame rim and before or after respectively.
  • Fig. 4 it is shown,that the inner frame sides on both sides of a lock device also have been formed, which also can be done simultaneously with the forming of the outer frame rim and before or after respectively.
  • the folding of the lock device proceeds up to a lock, all of the described and shown folding notches being used and the lock device being pushed outwards and simultaneously a folding taking place about the outer fork ends, the fork shoulder ends, the tongue shoulder and folding notch 18.
  • Fig. 6 the tongue with the fork web on one of its sides and the fork legs on its other side increasingly are brought together from an angle of 180° to 0°, the tongue however during the phase between Figs. 5 och 6 being swung back to roughly its original position in the same plane as the adjacent inner frame side.
  • the inner frame sides may be substantially wider and be provided with a plurality of locks of the type described above.
  • the planar main frame sides and the outer rim or solely the latter respectively may be excluded. Almost arbitrary angle variations are feasible.

Landscapes

  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Golf Clubs (AREA)
  • Joining Of Corner Units Of Frames Or Wings (AREA)
  • Peptides Or Proteins (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Connection Of Plates (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Photovoltaic Devices (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
EP95100394A 1994-01-31 1995-01-13 A work piece for a frame structure, a frame structure made of such a work piece and a method of producing such a frame structure Expired - Lifetime EP0665406B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9400306 1994-01-31
SE9400306A SE505031C2 (sv) 1994-02-01 1994-02-01 Ett ämne till en ramstruktur, en medelst detta ämne framställd ramstruktur samt ett sätt att framställa en sådan ramstruktur

Publications (2)

Publication Number Publication Date
EP0665406A1 EP0665406A1 (en) 1995-08-02
EP0665406B1 true EP0665406B1 (en) 1998-03-11

Family

ID=20392754

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100394A Expired - Lifetime EP0665406B1 (en) 1994-01-31 1995-01-13 A work piece for a frame structure, a frame structure made of such a work piece and a method of producing such a frame structure

Country Status (7)

Country Link
EP (1) EP0665406B1 (no)
AT (1) ATE163998T1 (no)
DE (1) DE69501747T2 (no)
DK (1) DK0665406T3 (no)
FI (1) FI104106B (no)
NO (1) NO310123B1 (no)
SE (1) SE505031C2 (no)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008050566A1 (de) * 2008-10-06 2010-04-08 Zumtobel Lighting Gmbh Leuchtengehäuse mit Rahmen
AU2014203246B2 (en) * 2013-06-14 2018-08-16 Druery, Roy MR Improvements in or in relation to suspended ceilings

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2916331A1 (de) * 1979-04-23 1980-11-13 Alfred Korsch Verfahren zur herstellung eines rasters, insbesondere eines leuchtenblendschutzrasters fuer spiegelrasterleuchten
SE9102123L (sv) * 1991-07-08 1993-01-09 Fagerhults Ab Elektrisk belysningsarmatur med blaendskydd samt saett att framstaella ett saadant blaendskydd

Also Published As

Publication number Publication date
FI104106B1 (fi) 1999-11-15
FI950328A (fi) 1995-08-01
FI950328A0 (fi) 1995-01-26
SE9400306L (sv) 1995-08-01
DE69501747D1 (de) 1998-04-16
DE69501747T2 (de) 1998-11-12
NO310123B1 (no) 2001-05-21
EP0665406A1 (en) 1995-08-02
NO950091D0 (no) 1995-01-10
SE505031C2 (sv) 1997-06-16
ATE163998T1 (de) 1998-03-15
SE9400306D0 (sv) 1994-02-01
FI104106B (fi) 1999-11-15
NO950091L (no) 1995-08-01
DK0665406T3 (da) 1998-12-07

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