WO1995005519A1 - Door frame or preform for same, especially for use with light walls - Google Patents

Door frame or preform for same, especially for use with light walls Download PDF

Info

Publication number
WO1995005519A1
WO1995005519A1 PCT/DK1994/000302 DK9400302W WO9505519A1 WO 1995005519 A1 WO1995005519 A1 WO 1995005519A1 DK 9400302 W DK9400302 W DK 9400302W WO 9505519 A1 WO9505519 A1 WO 9505519A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
door frame
preform
door
frame
Prior art date
Application number
PCT/DK1994/000302
Other languages
French (fr)
Inventor
John Philip Holm
Finn Bremholm Jahn
Original Assignee
Deko Loft + Vaeg A/S
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 Deko Loft + Vaeg A/S filed Critical Deko Loft + Vaeg A/S
Priority to AU73828/94A priority Critical patent/AU7382894A/en
Publication of WO1995005519A1 publication Critical patent/WO1995005519A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • E06B5/161—Profile members therefor
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
    • E06B1/04—Frames for doors, windows, or the like to be fixed in openings
    • E06B1/32—Frames composed of parts made of different materials
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
    • E06B1/04—Frames for doors, windows, or the like to be fixed in openings
    • E06B1/34—Coverings, e.g. protecting against weather, for decorative purposes
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor

Definitions

  • the present invention relates to a door frame or a preform for manufacturing a door frame, such as set forth in detail in the preamble of claim 1.
  • Door frames of this kind have been proposed, in which the core consists of wood, c.f. e.g. GB Patent Publication No. 943.962, based upon an invention from 1959.
  • door frames or preforms of this kind partly lack the fire-protecting capability to be desired (and in many cases required), partly have a tendency to warp due to the inherent inhomogeneity of the natural wood material.
  • the improvement in the fire-protecting capability is presumably due, partly to the relatively high heat-storage capacity of the hard fibre material in combination with its relatively low heat-conducting capability, partly that the metal cove ⁇ ring distributes the heat from any flame hitting the covering in such a manner, that the fire does not immediately take hold of the core, such as would undoubtedly be the case with frames having no more than a plastic or veneer covering.
  • the door frame 1 shown in the drawing consists of two main components, viz. a core 2, in the present example being manufactured from a semi-hard wood-fibre material of the kind being marketed under the designation MDF (Medium
  • Density Fibreboard and a covering 3 of metal, in the example shown extruded aluminium in an alloy suited for the purpose.
  • the door frame 1 surrounds a door opening 4 that may be closed in the conventional manner by a door 5, of which only the edge portion opposite the hinge edge is shown, the edge shown cooperating with a weather strip 6 of e.g. PVC secured in an undercut groove in the covering 3.
  • a weather strip 6 of e.g. PVC secured in an undercut groove in the covering 3.
  • the construction of the door 5 will not be described in detail in the present description, since the invention does not relate to the door, but it will be obvious that the door 5 must have a quality of fire safety at least corres- ponding to what is achieved with the door frame 1 assembled according to the present invention.
  • the semi-hard fibre material (MDF) material), of which the core 2 is manufactured, is usually produced and marketed in the form of boards of various thicknesses. It is, of course, possible to manufacture the core 2 from a piece of such material with a thickness corresponding to the full thickness of the frame (as measured parallel to the door 5), in which the rabbet intended to cooperate with the door 5 is then formed in a milling operation, but since this entails a great waste of material, it is preferred according to the invention to manufacture the core 2 from two core parts 7 and 8, possibly joined, e.g. by means of glue, at a joint face 9.
  • the core 2 and the covering 3 Due to the properties of the materials used, it is necessary to manufacture the core 2 and the covering 3 separately and then place the core within the covering. This may, of course, be done by pushing the core into the covering from one end, but it is preferred to use a covering like the one shown with an open side facing away from the door opening (4), through which open side the core 2 may be pushed in the transverse direction.
  • the flanks 10 and 11 of the covering 3 are bent outwardly within their elastic limits, so that especially the core part 7 may pass inwardly past the edge strips 12 and 13 of the flanks respectively, said edge strips at the end of the movement slipping into edge rabbets 14 and 15 respectively on the core part 7.
  • the edge strips 12 and 13 may be rounded or bevelled as indicated at 16 and 17 respective ⁇ ly.
  • the core part 7 On the side facing away from the door opening 4, the core part 7 comprises a pair of grooves 18 and 19, in which steel profile members 20 and 21, indicated in broken line, of the adjacent wall may be inserted.
  • a door frame constructed according to the principle of the present invention has a considerably better fire-protecting capability than e.g. a similar door frame, in which the core consists of pinewood.
  • the fibre material used according to the invention has a rather high heat-storage capacity - its weight is thus considerably greater than that of pine- wood - and heat e.g. penetrating towards the flank 11 will to a great extent be absorbed by the adjacent part of the core part 7, while only a lesser proportion "flows" through the part of the covering 3 facing the door opening 4.
  • Com ⁇ pared to e.g. pinewood the fibre material used according to the invention also possesses the advantage that its ten ⁇ dency to warp is practically zero.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Special Wing (AREA)

Abstract

In a door frame (1) consisting of a core (2) of rigid non-metallic material and a metal covering (3), e.g. of extruded aluminium, the new feature is that the core (2) consists of medium-hard compacted wood-fibre material, e.g. of the quality 'MDF' ('Medium Density Fibreboard'). In this manner, an improved fire protection is achieved compared to what is achieved with a door frame, in which the core consists of e.g. pinewood, at the same time as the tendency of the frame to warp has practically disappeared.

Description

DOOR FRAME OR PREFORM FOR SAME, ESPECIALLY FOR USE WITH LIGHT WALLS.
TECHNICAL FIELD
The present invention relates to a door frame or a preform for manufacturing a door frame, such as set forth in detail in the preamble of claim 1.
BACKGROUND ART
Door frames of this kind have been proposed, in which the core consists of wood, c.f. e.g. GB Patent Publication No. 943.962, based upon an invention from 1959. Experience has, however, shown that door frames or preforms of this kind partly lack the fire-protecting capability to be desired (and in many cases required), partly have a tendency to warp due to the inherent inhomogeneity of the natural wood material.
DISCLOSURE OF THE INVENTION
It is the object of the present invention to provide a door frame or a preform of the kind referred to initially, that does not suffer from the disadvantages referred to above, and this object is achieved with a door frame or a preform for manufacturing such a frame, according to the present invention additionally exhibiting the feature set forth in the characterizing clause of claim 1.
It has surprisingly been shown that the combination of a metal covering with a relatively high thermal conductivity with a solid core of compacted wood-fibre material having a not insignificant capability of storing heat provides the door frame or the preform with a fire-protecting capabil¬ ity, which up to now has not been attainable with simple means, at the same time as the tendency of the door frame or the preform to warp has practically disappeared. The improvement in the fire-protecting capability is presumably due, partly to the relatively high heat-storage capacity of the hard fibre material in combination with its relatively low heat-conducting capability, partly that the metal cove¬ ring distributes the heat from any flame hitting the covering in such a manner, that the fire does not immediately take hold of the core, such as would undoubtedly be the case with frames having no more than a plastic or veneer covering.
Advantageous embodiments of the door frame or preform accor¬ ding to the invention, the effects of which will be evident from the following detailed portion of the present descrip- tion, are set forth in claims 2 and 3.
BRIEF DESCRIPTION OF THE DRAWING
In the following detailed portion of the present description, the invention will be explained in more detail with reference to the drawing, showing a horizontal section through one of the two vertical parts of a door frame, together with a part of the door cooperating with the frame.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The door frame 1 shown in the drawing consists of two main components, viz. a core 2, in the present example being manufactured from a semi-hard wood-fibre material of the kind being marketed under the designation MDF (Medium
Density Fibreboard), and a covering 3 of metal, in the example shown extruded aluminium in an alloy suited for the purpose.
The door frame 1 surrounds a door opening 4 that may be closed in the conventional manner by a door 5, of which only the edge portion opposite the hinge edge is shown, the edge shown cooperating with a weather strip 6 of e.g. PVC secured in an undercut groove in the covering 3.
The construction of the door 5 will not be described in detail in the present description, since the invention does not relate to the door, but it will be obvious that the door 5 must have a quality of fire safety at least corres- ponding to what is achieved with the door frame 1 assembled according to the present invention.
The semi-hard fibre material ("MDF" material), of which the core 2 is manufactured, is usually produced and marketed in the form of boards of various thicknesses. It is, of course, possible to manufacture the core 2 from a piece of such material with a thickness corresponding to the full thickness of the frame (as measured parallel to the door 5), in which the rabbet intended to cooperate with the door 5 is then formed in a milling operation, but since this entails a great waste of material, it is preferred according to the invention to manufacture the core 2 from two core parts 7 and 8, possibly joined, e.g. by means of glue, at a joint face 9.
Due to the properties of the materials used, it is necessary to manufacture the core 2 and the covering 3 separately and then place the core within the covering. This may, of course, be done by pushing the core into the covering from one end, but it is preferred to use a covering like the one shown with an open side facing away from the door opening (4), through which open side the core 2 may be pushed in the transverse direction. For this purpose, the flanks 10 and 11 of the covering 3 are bent outwardly within their elastic limits, so that especially the core part 7 may pass inwardly past the edge strips 12 and 13 of the flanks respectively, said edge strips at the end of the movement slipping into edge rabbets 14 and 15 respectively on the core part 7. In order to ease the insertion operation and avoid damage to especially the core part 7, the edge strips 12 and 13 may be rounded or bevelled as indicated at 16 and 17 respective¬ ly.
On the side facing away from the door opening 4, the core part 7 comprises a pair of grooves 18 and 19, in which steel profile members 20 and 21, indicated in broken line, of the adjacent wall may be inserted.
Trials have shown that a door frame constructed according to the principle of the present invention has a considerably better fire-protecting capability than e.g. a similar door frame, in which the core consists of pinewood. The reason for this is probably that the fibre material used according to the invention has a rather high heat-storage capacity - its weight is thus considerably greater than that of pine- wood - and heat e.g. penetrating towards the flank 11 will to a great extent be absorbed by the adjacent part of the core part 7, while only a lesser proportion "flows" through the part of the covering 3 facing the door opening 4. Com¬ pared to e.g. pinewood, the fibre material used according to the invention also possesses the advantage that its ten¬ dency to warp is practically zero.
LIST OF PARTS
1 Door frame
2 Core
3 Covering
4 Door opening
5 Door
6 Weather strip
7 Core part
8 Core part
9 Joint face
10 Flank
11 Flank
12 Edge strip
13 Edge strip
14 Edge rabbet
15 Edge rabbet
16 Rounding/bevel
17 Rounding/bevel
18 Groove
19 Groove
20 Steel profile member
21 Steel profile member

Claims

CLAIMS .
1. Door frame or preform for manufacturing a door frame and of the kind comprising a) a previously manufactured core (2) of rigid non-metallic material, and b) a previously manufactured covering (3) of rigid me¬ tallic material surrounding the core (2) at least on the side facing towards or intended to face towards the door opening (4) within the finished door frame and on the sides intended to extend away from the door opening towards the surfaces of the surrounding wall, characterized in c) that the core (2) consists of compacted wood-fibre material with a hardness of the same order of mag¬ nitude as that of beechwood.
2. Door frame or preform according to claim 1, charac- terized in that the core (2) consists of fibreboard of the kind designated "MDF" ("Medium Density Fibreboard" ).
3. Door frame or preform according to claim 1 or 2, characterized in that the core (2) consists of at least two core parts (7,8) joined along a surface (9) extending in the longitudinal direction of the frame side or preform.
PCT/DK1994/000302 1993-08-17 1994-08-10 Door frame or preform for same, especially for use with light walls WO1995005519A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU73828/94A AU7382894A (en) 1993-08-17 1994-08-10 Door frame or preform for same, especially for use with light walls

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK94193A DK94193D0 (en) 1993-08-17 1993-08-17 DOORKARM OR SUBJECT TO SUCH ONE, NECESSARY FOR USE WITH LIGHT WALLS
DK0941/93 1993-08-17

Publications (1)

Publication Number Publication Date
WO1995005519A1 true WO1995005519A1 (en) 1995-02-23

Family

ID=8099234

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1994/000302 WO1995005519A1 (en) 1993-08-17 1994-08-10 Door frame or preform for same, especially for use with light walls

Country Status (3)

Country Link
AU (1) AU7382894A (en)
DK (1) DK94193D0 (en)
WO (1) WO1995005519A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306994A (en) * 1995-11-10 1997-05-14 Shapland & Petter Ltd Compound door frame with core sections filled with a heat absorbing material
WO1998022681A1 (en) * 1996-11-19 1998-05-28 Velux Industri A/S A window having an improved window frame structure
WO1998022682A1 (en) * 1996-11-19 1998-05-28 Velux Industri A/S A window having an improved sash structure
LT4472B (en) 1997-06-13 1999-02-25 Akcinė Bendrovė "Elesta" Doors, door leaves, methods for their manufacturing and mounting
US7472519B2 (en) * 2004-11-29 2009-01-06 Giovanni Careri Door jamb
WO2009138536A1 (en) * 2008-05-12 2009-11-19 Pedro Manuel Aguilera Romero Metal coating for wood
US20120137605A1 (en) * 2010-12-02 2012-06-07 Capstone Engineering Co., Ltd. Jamb assembly for door
CN104395545A (en) * 2012-06-18 2015-03-04 乔治·S·刘 Environmentally resistant structural member
US20190242177A1 (en) * 2018-02-05 2019-08-08 William-MacRae and Company Composite molded shell with stiffening inner core for interior trim molding applications
RU216385U1 (en) * 2022-06-28 2023-01-31 Закрытое акционерное общество "АлтайСпецИзделия" (ЗАО "АлтайСпецИзделия") Metallic profile

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102493731A (en) * 2011-12-13 2012-06-13 上海研和门窗系统有限公司 Energy-saving door and window profile formed by adhering aluminum on solid wood and manufacture method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB943962A (en) * 1959-01-31 1963-12-11 Perspektiva As Metal covered wooden door, window or like frames
DE2408232A1 (en) * 1974-02-21 1975-09-11 Hans Klingel Strongly surface-structured building panel or moulding - comprises resin-impregnated wood fibre core and readily deformable top layer(s)
EP0320803A2 (en) * 1987-12-17 1989-06-21 Pavatex Ag Three-dimensional wooden work piece for use as a structural component
SE464424B (en) * 1988-11-10 1991-04-22 Swedoor Ab frame construction
EP0515875A1 (en) * 1991-05-28 1992-12-02 Glunz Ag Laminated wooden section member for making frames, especially for doors or windows and their manufacturing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB943962A (en) * 1959-01-31 1963-12-11 Perspektiva As Metal covered wooden door, window or like frames
DE2408232A1 (en) * 1974-02-21 1975-09-11 Hans Klingel Strongly surface-structured building panel or moulding - comprises resin-impregnated wood fibre core and readily deformable top layer(s)
EP0320803A2 (en) * 1987-12-17 1989-06-21 Pavatex Ag Three-dimensional wooden work piece for use as a structural component
SE464424B (en) * 1988-11-10 1991-04-22 Swedoor Ab frame construction
EP0515875A1 (en) * 1991-05-28 1992-12-02 Glunz Ag Laminated wooden section member for making frames, especially for doors or windows and their manufacturing method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DIALOG INFORMATION SERVICE, File 351, Derwent WPI, World Patent Index 81-94, Dialog Accession No. 009051702, WPI Accession No. 92-179079/22, HONDA T., "Fireproof *door* for Apartments and Hotels - obtd. by Thermally Spraying *metal* Film Layer on *wood* Board Having Acetylated Hydroxyl gps"; & JP,A,04 115 007, 15-04-92, *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306994A (en) * 1995-11-10 1997-05-14 Shapland & Petter Ltd Compound door frame with core sections filled with a heat absorbing material
WO1998022681A1 (en) * 1996-11-19 1998-05-28 Velux Industri A/S A window having an improved window frame structure
WO1998022682A1 (en) * 1996-11-19 1998-05-28 Velux Industri A/S A window having an improved sash structure
US6164025A (en) * 1996-11-19 2000-12-26 Velux Industri A/S Window having an improved window frame structure
US6286267B1 (en) 1996-11-19 2001-09-11 Vkr Holding A/S Window having an improved sash structure
LT4472B (en) 1997-06-13 1999-02-25 Akcinė Bendrovė "Elesta" Doors, door leaves, methods for their manufacturing and mounting
US7472519B2 (en) * 2004-11-29 2009-01-06 Giovanni Careri Door jamb
ES2357199A1 (en) * 2008-05-12 2011-04-20 Pedro Manuel Aguilera Romero Metal coating for wood
WO2009138536A1 (en) * 2008-05-12 2009-11-19 Pedro Manuel Aguilera Romero Metal coating for wood
US20120137605A1 (en) * 2010-12-02 2012-06-07 Capstone Engineering Co., Ltd. Jamb assembly for door
US8499509B2 (en) * 2010-12-02 2013-08-06 Capstone Engineering Co., Ltd. Jamb assembly for door
CN104395545A (en) * 2012-06-18 2015-03-04 乔治·S·刘 Environmentally resistant structural member
US20190242177A1 (en) * 2018-02-05 2019-08-08 William-MacRae and Company Composite molded shell with stiffening inner core for interior trim molding applications
US10851579B2 (en) 2018-02-05 2020-12-01 William-MacRae and Company Composite molded shell with stiffening inner core for interior trim molding applications
US11421469B2 (en) 2018-02-05 2022-08-23 William-MacRae and Company Composite molded shell with stiffening inner core for interior trim molding applications
US20230003076A1 (en) * 2018-02-05 2023-01-05 William-MacRae and Company Composite molded shell with stiffening inner core for interior trim molding applications
US11859436B2 (en) 2018-02-05 2024-01-02 William-MacRae and Company Composite molded shell with stiffening inner core for interior trim molding applications
RU216385U1 (en) * 2022-06-28 2023-01-31 Закрытое акционерное общество "АлтайСпецИзделия" (ЗАО "АлтайСпецИзделия") Metallic profile

Also Published As

Publication number Publication date
AU7382894A (en) 1995-03-14
DK94193D0 (en) 1993-08-17

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