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EP3495595B1 - Backfill with intumescent material - Google Patents

Backfill with intumescent material Download PDF

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Publication number
EP3495595B1
EP3495595B1 EP18207825.3A EP18207825A EP3495595B1 EP 3495595 B1 EP3495595 B1 EP 3495595B1 EP 18207825 A EP18207825 A EP 18207825A EP 3495595 B1 EP3495595 B1 EP 3495595B1
Authority
EP
European Patent Office
Prior art keywords
door
section
intumescent strip
intumescent
rebate
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.)
Active
Application number
EP18207825.3A
Other languages
German (de)
French (fr)
Other versions
EP3495595A1 (en
Inventor
Timo Daub
Franziska Frisch
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.)
Novoferm Riexinger Tuerenwerke GmbH
Original Assignee
Novoferm Riexinger Tuerenwerke GmbH
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 Novoferm Riexinger Tuerenwerke GmbH filed Critical Novoferm Riexinger Tuerenwerke GmbH
Publication of EP3495595A1 publication Critical patent/EP3495595A1/en
Application granted granted Critical
Publication of EP3495595B1 publication Critical patent/EP3495595B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • E06B1/52—Frames specially adapted for doors
    • 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
    • E06B1/12—Metal frames
    • 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
    • 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
    • E06B1/12—Metal frames
    • E06B1/18—Metal frames composed of several parts with respect to the cross-section of the frame itself
    • 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
    • E06B1/56—Fastening frames to the border of openings or to similar contiguous frames
    • E06B1/60—Fastening frames to the border of openings or to similar contiguous frames by mechanical means, e.g. anchoring means
    • E06B1/6015—Anchoring means
    • 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
    • E06B5/164—Sealing arrangements between the door or window and its frame, e.g. intumescent seals specially adapted therefor

Definitions

  • the invention relates to a steel frame with fire-retardant properties.
  • frames made of metal profiles are often used due to their high thermal resistance.
  • they are easy and inexpensive to manufacture and have a high mechanical resistance even in normal operation without fire load.
  • Steel frames are usually designed as sheet metal profiles, which have a high degree of inherent rigidity.
  • the problem is the seal between the sheet metal profile and the masonry opening in which the steel frame is inserted. This seal is of particular importance in the event of a fire, so that a safe fire can be guaranteed. If the seal is inadequate, heat, flames and / or flue gases can pass through the back of the steel frame.
  • fire protection frames in particular steel frames, are also partially lined with a so-called intumescent material.
  • This has the property of experiencing a large increase in volume under the influence of heat - as occurs in the event of a fire. This makes it possible to leave the cavity between the back of the steel frame and the masonry opening unfilled or to backfill it with a cheap, non-heat-resistant plastic foam.
  • the increase in volume closes the cavity in a fire-proof manner, thus sealing the back of the frame against the passage of heat and / or fire gases. If the fire does not occur, the intumescent material remains in the non-foamed state, so that the fire protection steel frame can be easily removed from the wall opening.
  • a door frame is known on which a fabric is arranged which foams under the action of an elevated temperature.
  • a profiled metal frame with intumescent material provided on the back is made of, for example FR 2 477 625 known. It describes a steel frame according to the preamble of claim 1.
  • the intumescent material completely covers the back.
  • this has the disadvantage of being expensive, since the intumescent material has to be provided in large quantities. A large part of this is not required in the event of a fire and swells out of the side of the frame area.
  • the frame profile can also be deformed during the foaming process, so that the tightness between the steel frame and the fire protection door or the fire protection gate contained therein is impaired.
  • the invention has for its object to optimize the arrangement of the intumescent material on the back of a steel frame with fire-retardant properties in such a way that a safe seal can be guaranteed in the event of fire with the least possible use of material, which, however, does not have the profile of the steel frame when foaming can deform in a harmful way.
  • the invention is based on a generic steel frame with fire-retardant properties, which comprises a sheet metal part.
  • the molded sheet metal part has a door-side frame mirror, a folding area that adjoins the door-side frame mirror, is angled at right angles, a stop area that connects to the side of the folding area that faces away from the door-side frame mirror, a soffit area that adjoins the stop area and is oriented parallel to the rebate area, and an adjoining the soffit area Angled in the direction of the frame mirror and aligned parallel to this fold.
  • An intumescent material is arranged on the inside of the sheet metal part.
  • the intumescent material is arranged exclusively in the form of an intumescent strip on the door side, at least in sections, on the inside of the fold area and an intumescent strip on the reveal side on the inside of the fold.
  • the inside of the frame mirror and the inside of the reveal area are free of intumescent material.
  • the inventive arrangement of the intumescent material in two strips enables the required sealing effect in the event of a fire to be provided with relatively little material.
  • the intumescent material of the soffit-side strip is arranged on the inside of the fold in such a way that it expands in the space on the back of the steel frame and parallel to the soffit. The forces caused by the expansion, which would push the soffit away from the masonry, are thus reduced.
  • the intumescent strip on the door side is arranged at least in sections on the inside of the fold area. This therefore exerts a certain pressure between the masonry and the rebate area when expanding. However, this does not deform the frame, since the door or door leaf connects to the surface of the frame side.
  • a secure seal between the steel frame and the masonry is therefore achieved and the cohesion between the frame and the door leaf or gate is additionally strengthened.
  • the reveal side intumescent strip is arranged on the flat side of the fold over the entire longitudinal extent of the sheet metal part.
  • the continuous banding facilitates the manufacture of the steel frame according to the invention.
  • a continuous, uninterrupted sealing strip is also made from foamed material.
  • a fastening element for fastening to a wall is preferably arranged in the angle between the frame mirror and the rebate area.
  • the intumescent strip on the door is recessed in the area of the fastening element on the inside of the fold area.
  • a section of the intumescent strip on the door is arranged on the inside of the stop area in the area of the fastening element. Since the hinge-side intumescent strip is interrupted in the area of the fastening elements, its assembly on the inside of the steel frame is simplified. The gap between the frame and the wall opening is also reduced in the area of the fastening element, so that it is sufficient to arrange a section of the hinge-side intumescent strip on the stop section adjacent to the folded section.
  • the fastening elements only take up a relatively short area in the longitudinal extent of the frame profile from a few centimeters to about 15 cm, such a short-term interruption of the part of the hinge-side intumescent strip arranged on the fold section is in connection with an intermediate piece on the rear side of the stop section for the tightness harmless in the event of fire - the ribbon-side intumescent strip is particularly preferably completely interrupted in the area of the fastening elements for reasons of simplicity.
  • the intumescent material left out there can be arranged adjacent to the rear of the stop section.
  • At least one protective box for a locking element is preferably arranged in the angle between the frame mirror and the rebate area.
  • the protective box is accessible from the outside of the steel frame through an opening through which locking elements, such as locking hooks or bolts, can engage.
  • the protective box ensures that there is enough space on the back inside of the steel frame for an intervention.
  • the protective box is preferably sealed all around, so that the interior of the protective box is only connected to the outside of the steel frame and opposite the cavity arranged behind the inside of the steel frame is completed.
  • the protective box is preferably formed as a sheet metal box which is welded all round to the rear of the steel frame.
  • the door-side intumescent strip is interrupted in the area of the protective box on the inside of the fold area. At the same time, a section of the intumescent strip on the door is placed on the protective box.
  • the section placed on the protective box can differ in material thickness and width from the rest of the door-side intumescent strip.
  • the width and thickness of the section of the intumescent strip on the protective box corresponds to the fire-side intumescent strips directly on the inside of the folded section in the immediate vicinity of the protective box.
  • the length of the section at the top of the protective box has a length which corresponds to the length of the interruption of the door-side intumescent strip arranged directly on the fold area.
  • the door-side intumescent strip can thus be formed particularly easily from a continuous piece of intumescent material, the length of which corresponds to that of the steel profile.
  • the section of the door-side intumescent strip arranged on the upper side of the protective box prefferably be arranged parallel to the surface of the door-side intumescent strip arranged directly on the inside of the rebate area.
  • a fastening angle of the door hinge is fastened on the inside in the angle between the frame mirror and the rebate area.
  • the intumescent strip on the door is recessed in the area of the fastening bracket on the inside of the rebate area.
  • the mounting bracket is parallel to the door side Intumescent strips are arranged on the inside of the fold area on the hinge section of the intumescent strip on the door.
  • the door-side intumescent strip is particularly preferably formed in several parts and without overlap in the longitudinal direction of the sheet metal part.
  • the multi-part door-side intumescent strip expediently extends over at least 95%, in particular over the entire longitudinal extent of the sheet metal part. Surprisingly, this is sufficient to achieve a sufficient seal in the event of a fire, even if sections of the door-side intumescent strip are not arranged directly on the inside of the folded section.
  • the steel frame is designed as a two-part surrounding frame, a counter frame being connectable to the sheet metal part.
  • the counter frame is designed without intumescent material. In the context of the present invention, it is sufficient to provide the intumescent material only on the sheet metal molded part on the door.
  • a standard counter frame can thus be used particularly easily to complete the surrounding frame.
  • different variants can also be provided for providing a surrounding frame for different wall thicknesses, without these also having to be coated in the intumescent material.
  • the Fig. 1 shows a horizontal section through a steel frame according to the invention in the area of a lock-side frame spar in the installed state.
  • no special internals such as protective boxes for securing bolts or locking elements, fastening elements, tape receptacles and the like, are arranged.
  • a horizontal section through the lock-side, vertically running frame spar of the frame is shown, this also corresponds to a vertical section through the horizontal spar of the steel frame running horizontally over the side rails and - mirrored - a horizontal section through an installation-free area of the door-side frame spar.
  • the steel frame designed as a corner frame is formed with a sheet metal molded part 1 and connected to a wall 2.
  • a door leaf 3 strikes the sheet metal part 1, which is only indicated schematically.
  • the door leaf 3 is designed as a thin rebate door.
  • steel frames can also be used with thick rebate doors or flush-fitting doors without restricting the invention.
  • the sheet metal part has a frame mirror 4 on the door side, a rebate area 5 adjoining the frame mirror 4 on the door side and angled at right angles in the direction of the door opening.
  • a stop area 6 adjoins the side of the rebate area 5 facing away from the door-side frame mirror 4, which extends parallel to the door frame frame 4.
  • a groove 7 for receiving a door seal 8 is formed on the stop area 6.
  • the door seal 8 is formed by an elastic hollow chamber profile, which is pressed into the groove 7 with an oversize.
  • a reveal area 9 aligned parallel to the fold area 5 adjoins the stop area 6.
  • Reveal area 9 and fold area 5 are aligned parallel to the edge of the wall opening formed in wall 2.
  • At the reveal areas 9 there is also a fold 10, which is angled in the direction of the door-side frame mirror 4 and aligned parallel to it. In the installed state, a gap of width a remains between the fold 10 and the wall 2.
  • an intumescent material is arranged on the inside of the sheet metal part exclusively in the form of a door-side intumescent strip 11, at least in sections, on the inside of the rebate area 5 and an embrasure-side intumescent strip 12 on the inside of the fold 10.
  • the inside of the frame mirror 4 and the inside of the reveal area 9 are free of intumescent material.
  • the soffit-side intumescent strip 12 is formed continuously over the entire longitudinal extent of the sheet metal molded part 1, so that it is equally visible on the inside of the fold 10 in all representations of the subsequent sectional drawings.
  • the Fig. 2 shows a horizontal section through the frame spar on the lock side in the area of a fastening element 13.
  • the door-side intumescent strip 11 is interrupted on the inside of the rebate area 5.
  • a section 11a of the door-side intumescent strip 11 is arranged on the inside of the stop area 6 in the area of the fastening element 13.
  • the situation is similar in the case of fastening elements 13 in the region of the cross member or the door side member.
  • a protective box 14 for a locking element 15 is arranged in the angle between the frame mirror 4 and the rebate area 5.
  • the intumescence strip 11 on the door is interrupted in the area of the protective box 14 on the inside of the fold area 5.
  • a section 11b of the intumescent strip 11 on the door lies on the protective box 14.
  • the section 11b of the intumescent strip on the protective box 14 corresponds in width and thickness to the intumescent strip 11 on the door side directly on the inside of the folded section 5 in the immediate vicinity of the protective box 14 in the longitudinal direction of extension of the sheet metal profile 1.
  • the length of section 11b on the upper side of the protective box 14 in The longitudinal direction of the sheet metal profile 1 corresponds to the length of the interruption of the door-side intumescent strip 11 arranged directly on the rebate area 5.
  • Section 11b is arranged parallel to the adjacent intumescent strips 11.
  • the closing element can, for example - as in Fig. 3 shown - around a door latch 15 or - as in Fig. 4 shown - act as a securing bolt 16.
  • a fastening angle 17 for fastening a door hinge 18 is provided on the door-side frame spar in the angle between the frame mirror 4 and the rebate area 5.
  • the intumescent strip 11 on the door side is recessed in the area of the fastening angle 17 on the inside of the fold area 5.
  • a band angle section 11c of the door-side intumescent strip 11 is arranged on the inside of the fold area 5 parallel to the surface of the door-side intumescent strip.
  • the hinge angle section 11 c can be made narrower in width than the intumescent strip 11 on the door side directly on the inside of the rebate area 5.
  • Fig. 6 shows a representation accordingly Fig. 1 in an alternative embodiment, with a two-part frame.
  • the sheet profile 1 is connected to a counter frame 19.
  • the surrounding frame thus encompasses the wall 2 on both sides in the installed state.
  • the counter frame 19 is designed without intumescent material. It lies flat on the reveal section 9 and on the fold 10 and is connected to the sheet metal profile 1 by a fastening screw 20 engaging in the bottom of the groove 8.
  • the counter frame 19 can be connected to the wall 2 by its own fastening elements 21.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Special Wing (AREA)

Description

Die Erfindung betrifft eine Stahlzarge mit brandhemmenden Eigenschaften.The invention relates to a steel frame with fire-retardant properties.

Im Bereich der Brandschutztüren und -tore werden aufgrund der hohen thermischen Beständigkeit vielfach Zargen aus Metallprofilen, insbesondere Stahlzargen eingesetzt. Sie sind überdies leicht und kostengünstig herzustellen und weisen auch im normalen Betrieb ohne Brandlast eine hohe mechanische Widerstandskraft auf. Stahlzargen werden in der Regel als Blechprofile ausgebildet, welche eine hohe Eigensteifigkeit aufweisen. Problematisch ist jedoch die Abdichtung zwischen dem Blechprofil und der Mauerwerksöffnung, in welche die Stahlzarge eingesetzt wird. Diese Abdichtung ist insbesondere im Brandfall von herausragender Bedeutung, damit ein sicherer Brandabschluss gewährleistet werden kann. Bei einer unzureichenden Abdichtung können Hitze, Flammen und/oder Rauchgase an der Rückseite der Stahlzarge hindurchtreten.In the field of fire protection doors and gates, frames made of metal profiles, in particular steel frames, are often used due to their high thermal resistance. In addition, they are easy and inexpensive to manufacture and have a high mechanical resistance even in normal operation without fire load. Steel frames are usually designed as sheet metal profiles, which have a high degree of inherent rigidity. However, the problem is the seal between the sheet metal profile and the masonry opening in which the steel frame is inserted. This seal is of particular importance in the event of a fire, so that a safe fire can be guaranteed. If the seal is inadequate, heat, flames and / or flue gases can pass through the back of the steel frame.

Hierzu ist es grundsätzlich bekannt, den Hohlraum zwischen der Rückseite der Stahlzarge und der Mauerwerksöffnung mit einem feuerbeständigen Dichtmaterial auszufüllen. Traditionell wird hierzu beispielsweise Mörtel eingesetzt, welcher vergleichsweise günstig und bei Bauvorhaben ohnehin vorhanden ist. Ebenso sind feuerbeständige Kunststoffschäume bekannt, welche zum Hinterfüllen einer Brandschutzstahlzarge verwendet werden. Diese sind jedoch im Vergleich teurer und auch nicht gegen beliebig hohe Temperaturen resistent.For this purpose, it is generally known to fill the cavity between the rear of the steel frame and the masonry opening with a fire-resistant sealing material. For this purpose, mortar is traditionally used, for example, which is comparatively inexpensive and is already available in construction projects. Fire-resistant plastic foams are also known, which are used for backfilling a fire protection steel frame. However, these are more expensive in comparison and also not resistant to any high temperatures.

Eine Hinterfüllung beim Einbau der Stahlzarge hat jedoch den Nachteil, dass sich diese - wenn überhaupt - nur mit sehr großem Aufwand nachträglich wieder zerstörungsfrei aus der Maueröffnung entfernen lässt. In der Regel muss die Stahlzarge bei einem Austausch zerschnitten und das Hinterfüllungsmaterial entfernt werden. Dies ist mit hohem Arbeitsaufwand verbunden und verhindert auch eine Wiederverwendung der entnommenen Stahlzarge.However, backfilling when installing the steel frame has the disadvantage that it can only be removed from the wall opening retrospectively, if at all, only with great effort and without great effort. Usually must the steel frame is cut during an exchange and the backfill material is removed. This involves a lot of work and also prevents reuse of the removed steel frame.

Daher werden Brandschutzzargen, insbesondere Stahlzargen auch teilweise mit einem sogenannten intumeszierenden Material ausgekleidet. Dieses hat die Eigenschaft, unter Hitzeeinwirkung - wie dies im Brandfall auftritt - eine große Volumenzunahme zu erfahren. Hierdurch ist es möglich, den Hohlraum zwischen der Rückseite der Stahlzarge und der Mauerwerksöffnung zunächst unverfüllt zu lassen oder mit einem günstigen, nicht hitzebeständigen Kunststoffschaum zu hinterfüllen. Im Brandfall wird durch die Volumenzunahme der Hohlraum feuerfest geschlossen und so die Rückseite der Zarge gegen einen Durchtritt von Hitze und/oder Brandgasen abgedichtet. Tritt der Brandfall nicht ein, verbleibt das intumeszierende Material im nicht aufgeschäumten Zustand, so dass die Brandschutzstahlzarge problemlos wieder aus der Maueröffnung entnommen werden kann.Therefore fire protection frames, in particular steel frames, are also partially lined with a so-called intumescent material. This has the property of experiencing a large increase in volume under the influence of heat - as occurs in the event of a fire. This makes it possible to leave the cavity between the back of the steel frame and the masonry opening unfilled or to backfill it with a cheap, non-heat-resistant plastic foam. In the event of a fire, the increase in volume closes the cavity in a fire-proof manner, thus sealing the back of the frame against the passage of heat and / or fire gases. If the fire does not occur, the intumescent material remains in the non-foamed state, so that the fire protection steel frame can be easily removed from the wall opening.

Aus DE 28 50 125 A1 ist ein Türrahmen bekannt, an dem ein Stoff angeordnet ist, welcher unter Einwirkung einer erhöhten Temperatur schäumt.Out DE 28 50 125 A1 a door frame is known on which a fabric is arranged which foams under the action of an elevated temperature.

Eine profilierte Metallzarge mit an der Rückseite vorgesehenen intumeszierenden Material ist beispielsweise aus FR 2 477 625 bekannt. Es beschreibt eine Stahlzarge nach dem Oberbegriff des Anspruchs 1. Dabei bekleidet das intumeszierende Material die Rückseite vollständig. Dies hat jedoch den Nachteil eines hohen Kostenaufwands, da das intumeszierende Material in großer Menge bereitgestellt werden muss. Ein Großteil hiervon wird im Brandfall nicht benötigt und quillt seitlich aus dem Zargenbereich heraus. Weiterhin kann beim Vorgang des Aufschäumens auch das Zargenprofil verformt werden, so dass hierdurch die Dichtigkeit zwischen der Stahlzarge und der darin aufgenommenen Brandschutztür bzw. den darin aufgenommenen Brandschutztor beeinträchtigt wird.A profiled metal frame with intumescent material provided on the back is made of, for example FR 2 477 625 known. It describes a steel frame according to the preamble of claim 1. The intumescent material completely covers the back. However, this has the disadvantage of being expensive, since the intumescent material has to be provided in large quantities. A large part of this is not required in the event of a fire and swells out of the side of the frame area. Furthermore, the frame profile can also be deformed during the foaming process, so that the tightness between the steel frame and the fire protection door or the fire protection gate contained therein is impaired.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, die Anordnung des intumeszierenden Materials an der Rückseite einer Stahlzarge mit brandhemmenden Eigenschaften dahingehend zu optimieren, dass mit möglichst geringem Materialeinsatz eine sichere Abdichtung im Brandfall gewährleistet werden kann, welche jedoch das Profil der Stahlzarge beim Aufschäumen nicht in schädlicher Weise verformen kann.Against this background, the invention has for its object to optimize the arrangement of the intumescent material on the back of a steel frame with fire-retardant properties in such a way that a safe seal can be guaranteed in the event of fire with the least possible use of material, which, however, does not have the profile of the steel frame when foaming can deform in a harmful way.

Lösung dieser Aufgabe und Gegenstand der Erfindung ist eine Stahlzarge gemäß Patentanspruch 1. Bevorzugte Ausgestaltungen sind in den Unteransprüchen angegeben.This object and the object of the invention is achieved by a steel frame according to claim 1. Preferred embodiments are specified in the subclaims.

Die Erfindung geht von einer gattungsgemäßen Stahlzarge mit brandhemmenden Eigenschaften aus, welche ein Blechformteil umfasst. Das Blechformteil weist einen türseitigen Zargenspiegel, einen an den türseitigen Zargenspiegel anschließenden, rechtwinklig abgewinkelten Falzbereich, einen an der dem türseitigen Zargenspiegel abgewandten Seite des Falzbereichs anschließenden Anschlagsbereich, einen an den Anschlagsbereich anschließenden, parallelen zum Falzbereich ausgerichteten Laibungsbereich und einen an den Laibungsbereich anschließenden, in Richtung des Zargenspiegels abgewinkelten und parallel zu diesem ausgerichteten Umbug auf. An der Innenseite des Blechformteils ist ein Intumeszenzmaterial angeordnet. Erfindungsgemäß ist das Intumeszenzmaterial ausschließlich in Form eines türseitigen Intumeszenzstreifens zumindest abschnittsweise an der Innenseite des Falzbereichs und eines laibungsseitigen Intumeszenzstreifens an der Innenseite des Umbugs angeordnet. Die Innenseite des Zargenspiegels und die Innenseite des Laibungsbereichs sind frei von Intumeszenzmaterial.The invention is based on a generic steel frame with fire-retardant properties, which comprises a sheet metal part. The molded sheet metal part has a door-side frame mirror, a folding area that adjoins the door-side frame mirror, is angled at right angles, a stop area that connects to the side of the folding area that faces away from the door-side frame mirror, a soffit area that adjoins the stop area and is oriented parallel to the rebate area, and an adjoining the soffit area Angled in the direction of the frame mirror and aligned parallel to this fold. An intumescent material is arranged on the inside of the sheet metal part. According to the invention, the intumescent material is arranged exclusively in the form of an intumescent strip on the door side, at least in sections, on the inside of the fold area and an intumescent strip on the reveal side on the inside of the fold. The inside of the frame mirror and the inside of the reveal area are free of intumescent material.

Durch die erfindungsgemäße Anordnung des Intumeszenzmaterials in zwei Streifen kann die benötigte Dichtwirkung im Brandfall mit verhältnismäßig geringem Materialaufwand bereitgestellt werden. Dabei ist das intumeszierende Material des laibungsseitigen Streifens an der Innenseite des Umbugs so angeordnet, dass es sich bei einer Expansion in den Zwischenraum an der Rückseite der Stahlzarge und parallel zur Laibung ausdehnt. Die Kräfte durch die Expansion, welche die Laibung vom Mauerwerk wegdrücken würden, werden so reduziert. Weiterhin ist der türseitige Intumeszenzstreifen zumindest abschnittsweise an der Innenseite des Falzbereichs angeordnet. Dieser übt daher beim Expandieren eine gewisse Druckkraft zwischen dem Mauerwerk und dem Falzbereich aus. Hierdurch wird die Zarge jedoch nicht verformt, da an der Oberfläche der Zargenseite das Tür- bzw. Torblatt anschließt. Es wird daher eine sichere Abdichtung zwischen der Stahlzarge und dem Mauerwerk erreicht und zusätzlich der Zusammenhalt zwischen Zarge und Türflügel bzw. Tor verstärkt. Durch das Freihalten der Innenseite des Zargenspiegels von dem Intumeszenzmaterial wird ein unerwünschtes Abheben der Stahlzarge von der Maueröffnung vermieden.The inventive arrangement of the intumescent material in two strips enables the required sealing effect in the event of a fire to be provided with relatively little material. The intumescent material of the soffit-side strip is arranged on the inside of the fold in such a way that it expands in the space on the back of the steel frame and parallel to the soffit. The forces caused by the expansion, which would push the soffit away from the masonry, are thus reduced. Furthermore, the intumescent strip on the door side is arranged at least in sections on the inside of the fold area. This therefore exerts a certain pressure between the masonry and the rebate area when expanding. However, this does not deform the frame, since the door or door leaf connects to the surface of the frame side. A secure seal between the steel frame and the masonry is therefore achieved and the cohesion between the frame and the door leaf or gate is additionally strengthened. By keeping the inside of the frame mirror free of the intumescent material, an undesired lifting of the steel frame from the wall opening is avoided.

In einer bevorzugten Ausgestaltung ist der laibungsseitige Intumeszenzstreifen durchgängig über die gesamte Längserstreckung des Blechformteils an der ebenen Seite des Umbugs angeordnet. Die durchgängige Streifenbildung erleichtert die Fertigung der erfindungsgemäßen Stahlzarge. Weiterhin wird beim Aufschäumen des Intumeszenzmaterials ebenfalls ein durchgängiger, ununterbrochener Abdichtstreifen aus aufgeschäumten Material erzeugt.In a preferred embodiment, the reveal side intumescent strip is arranged on the flat side of the fold over the entire longitudinal extent of the sheet metal part. The continuous banding facilitates the manufacture of the steel frame according to the invention. Furthermore, when the intumescent material is foamed, a continuous, uninterrupted sealing strip is also made from foamed material.

Vorzugsweise ist in dem Winkel zwischen dem Zargenspiegel und dem Falzbereich ein Befestigungselement zur Befestigung an einer Wand angeordnet. Der türseitige Intumeszenzstreifen ist im Bereich des Befestigungselementes an der Innenseite des Falzbereichs ausgespart. Im Bereich des Befestigungselementes ist dafür ein Abschnitt des türseitigen Intumeszenzstreifens an der Innenseite des Anschlagsbereichs angeordnet. Da der bänderseitige Intumeszenzstreifen im Bereich der Befestigungselemente unterbrochen wird, vereinfacht sich dessen Montage an der Innenseite der Stahlzarge. Auch wird im Bereich der Befestigungselement der Spalte zwischen Zarge und Maueröffnung verkleinert, so dass es ausreichend ist, einen Abschnitt des bänderseitigen Intumeszenzstreifens an den dem Falzabschnitt benachbarten Anschlagsabschnitt anzuordnen. Da die Befestigungselemente nur über einen relativ kurzen Bereich in Längserstreckung des Zargenprofils von einigen wenigen Zentimetern bis etwa 15 cm einnehmen, ist eine derart kurzfristige Unterbrechung des an dem Falzabschnitt angeordneten Teils des bänderseitigen Intumeszenzstreifen in Verbindung mit einem Zwischenstück an der Rückseite des Anschlagsabschnittes für die Dichtigkeit im Brandfall unschädlich - Dabei wird die bänderseitige Intumeszenzstreifen aus Gründen der Einfachheit besonders bevorzugt im Bereich der Befestigungselemente vollständig unterbrochen. Insbesondere kann das dort ausgesparte Intumeszenzmaterial benachbart an der Rückseite des Anschlagsabschnittes angeordnet werden.A fastening element for fastening to a wall is preferably arranged in the angle between the frame mirror and the rebate area. The intumescent strip on the door is recessed in the area of the fastening element on the inside of the fold area. in the For this purpose, a section of the intumescent strip on the door is arranged on the inside of the stop area in the area of the fastening element. Since the hinge-side intumescent strip is interrupted in the area of the fastening elements, its assembly on the inside of the steel frame is simplified. The gap between the frame and the wall opening is also reduced in the area of the fastening element, so that it is sufficient to arrange a section of the hinge-side intumescent strip on the stop section adjacent to the folded section. Since the fastening elements only take up a relatively short area in the longitudinal extent of the frame profile from a few centimeters to about 15 cm, such a short-term interruption of the part of the hinge-side intumescent strip arranged on the fold section is in connection with an intermediate piece on the rear side of the stop section for the tightness harmless in the event of fire - the ribbon-side intumescent strip is particularly preferably completely interrupted in the area of the fastening elements for reasons of simplicity. In particular, the intumescent material left out there can be arranged adjacent to the rear of the stop section.

Weiterhin ist vorzugweise in dem Winkel zwischen dem Zargenspiegel und dem Falzbereich zumindest ein Schutzkasten für ein Verriegelungselement angeordnet. Der Schutzkasten ist dabei von der Außenseite der Stahlzarge durch eine Öffnung zugänglich, durch welche Verriegelungselemente, wie beispielsweise Verriegelungshaken oder -bolzen, eingreifen können. Der Schutzkasten stellt dabei sicher, dass an der rückwärtigen Innenseite der Stahlzarge genügend Platz für einen Eingriff erhalten bleibt. Der Schutzkasten ist vorzugsweise umlaufend abgedichtet, so dass der Innenraum des Schutzkastens lediglich mit der Außenseite der Stahlzarge in Verbindung steht und gegenüber dem hinter der Innenseite der Stahlzarge angeordneten Hohlraum abgeschlossen ist. Vorzugsweise ist der Schutzkasten als Blechkasten gebildet, welcher umlaufend mit der Rückseite der Stahlzarge verschweißt ist.
Gemäß einer bevorzugten Variante der Erfindung ist der türseitige Intumeszenzstreifen im Bereich des Schutzkastens einer Innenseite des Falzbereichs unterbrochen. Auf den Schutzkasten ist gleichzeitig ein Abschnitt des türseitigen Intumeszenzstreifens aufgelegt. Der auf dem Schutzkasten aufgelegte Abschnitt kann dabei in Materialstärke und -breite vom Rest des türseitigen Intumeszenzstreifens abweichen.Furthermore, at least one protective box for a locking element is preferably arranged in the angle between the frame mirror and the rebate area. The protective box is accessible from the outside of the steel frame through an opening through which locking elements, such as locking hooks or bolts, can engage. The protective box ensures that there is enough space on the back inside of the steel frame for an intervention. The protective box is preferably sealed all around, so that the interior of the protective box is only connected to the outside of the steel frame and opposite the cavity arranged behind the inside of the steel frame is completed. The protective box is preferably formed as a sheet metal box which is welded all round to the rear of the steel frame.
According to a preferred variant of the invention, the door-side intumescent strip is interrupted in the area of the protective box on the inside of the fold area. At the same time, a section of the intumescent strip on the door is placed on the protective box. The section placed on the protective box can differ in material thickness and width from the rest of the door-side intumescent strip.

In einer bevorzugten Ausgestaltung entspricht der Abschnitt des Intumeszenzstreifens auf den Schutzkasten in Breite und Stärke den brandseitigen Intumeszenzstreifen unmittelbar an der Innenseite des Falzabschnittes in unmittelbarer Umgebung zu dem Schutzkasten. Die Länge des Abschnitts an der Oberseite des Schutzkastens weist eine Länge auf, welche der Länge der Unterbrechung das an den Falzbereich unmittelbar angeordneten türseitigen Intumeszenzstreifens entspricht. Somit lässt sich der türseitige Intumeszenzstreifen besonders einfach aus einem durchgängigen Stück Intumeszenzmaterial bilden, dessen Länge der des Stahlprofils entspricht.In a preferred embodiment, the width and thickness of the section of the intumescent strip on the protective box corresponds to the fire-side intumescent strips directly on the inside of the folded section in the immediate vicinity of the protective box. The length of the section at the top of the protective box has a length which corresponds to the length of the interruption of the door-side intumescent strip arranged directly on the fold area. The door-side intumescent strip can thus be formed particularly easily from a continuous piece of intumescent material, the length of which corresponds to that of the steel profile.

In jedem Fall ist es zweckmäßig, dass der an der Oberseite des Schutzkastens angeordnete Abschnitt des türseitigen Intumeszenzstreifens flächenparallel zu dem unmittelbaren der Innenseite des Falzbereiches angeordneten türseitigen Intumeszenzstreifens angeordnet ist.In any case, it is expedient for the section of the door-side intumescent strip arranged on the upper side of the protective box to be arranged parallel to the surface of the door-side intumescent strip arranged directly on the inside of the rebate area.

In einer bevorzugten Ausgestaltung der Erfindung ist in dem Winkel zwischen dem Zargenspiegel und dem Falzbereich ein Befestigungswinkel des Türbandes innenseitig befestigt. Der türseitige Intumeszenzstreifen ist im Bereich des Befestigungswinkels an der Innenseite des Falzbereichs ausgespart. Weiterhin ist auf dem Befestigungswinkel flächenparallel zum türseitigen Intumeszenzstreifen an der Innenseite des Falzbereichs am Bandwinkelabschnitt des türseitigen Intumeszenzstreifens angeordnet.In a preferred embodiment of the invention, a fastening angle of the door hinge is fastened on the inside in the angle between the frame mirror and the rebate area. The intumescent strip on the door is recessed in the area of the fastening bracket on the inside of the rebate area. Furthermore, the mounting bracket is parallel to the door side Intumescent strips are arranged on the inside of the fold area on the hinge section of the intumescent strip on the door.

Besonders bevorzugt ist der türseitige Intumeszenzstreifen in Längserstreckungsrichtung des Blechformteils mehrteilig und ohne Überlappung ausgebildet. Zweckmäßigerweise erstreckt sich der mehrteilige türseitige Intumeszenzstreifen dabei über zumindest 95 %, insbesondere über die gesamte Längserstreckung des Blechformteils. Überraschenderweise ist das ausreichend, um eine ausreichende Abdichtung im Brandfall zu erzielen, selbst wenn Abschnitte des türseitigen Intumeszenzstreifens nicht unmittelbar an der Innenseite des Falzabschnitts angeordnet sind.The door-side intumescent strip is particularly preferably formed in several parts and without overlap in the longitudinal direction of the sheet metal part. The multi-part door-side intumescent strip expediently extends over at least 95%, in particular over the entire longitudinal extent of the sheet metal part. Surprisingly, this is sufficient to achieve a sufficient seal in the event of a fire, even if sections of the door-side intumescent strip are not arranged directly on the inside of the folded section.

In einer bevorzugten Ausgestaltung ist die Stahlzarge als zweiteilige Umfassungszarge ausgebildet, wobei eine Gegenzarge mit dem Blechformteil verbindbar ist. Die Gegenzarge ist ohne Intumeszenzmaterial ausgebildet. Im Rahmen der vorliegenden Erfindung reicht es aus, das Intumeszenzmaterial lediglich an dem türseitigen Blechformteil vorzusehen. Somit kann besonders einfach eine standardmäßige Gegenzarge zur Vervollständigung der Umfassungszarge verwendet werden. Insbesondere können hierbei auch verschiedene Varianten zur Bereitstellung einer Umfassungszarge für unterschiedliche Wandstärken vorgesehen sein, ohne dass diese ebenfalls im Intumeszenzmaterial beschichtet sein müssten.In a preferred embodiment, the steel frame is designed as a two-part surrounding frame, a counter frame being connectable to the sheet metal part. The counter frame is designed without intumescent material. In the context of the present invention, it is sufficient to provide the intumescent material only on the sheet metal molded part on the door. A standard counter frame can thus be used particularly easily to complete the surrounding frame. In particular, different variants can also be provided for providing a surrounding frame for different wall thicknesses, without these also having to be coated in the intumescent material.

Die Erfindung wird nachfolgend anhand von lediglich einem Ausführungsbeispiel darstellenden Zeichnungen erläutert. Es zeigen dabei schematisch

Fig. 1
einen Horizontalschnitt durch eine erfindungsgemäße Stahlzarge im Bereich eines schlossseitigen Zargenholms,
Fig. 2
eine Darstellung entsprechend Fig. 1 im Bereich eines Befestigungselementes,
Fig. 3
einen Horizontalschnitt im Bereich des Schlossschutzkastens,
Fig. 4
eine entsprechende Ansicht im Bereich eines Mauerschutzkastens für einen Sicherungsbolzen an einem türseitigen Zargenholm,
Fig. 5
einen Horizontalschnitt im Bereich eines Türbandes und
Fig. 6
eine Darstellung entsprechend Fig. 1 bei einer alternativen Ausführungsform als Umfassungszarge.
The invention is explained below on the basis of drawings showing only one exemplary embodiment. It shows schematically
Fig. 1
3 shows a horizontal section through a steel frame according to the invention in the region of a frame-side frame,
Fig. 2
a representation accordingly Fig. 1 in the area of a fastener,
Fig. 3
a horizontal section in the area of the lock protection case,
Fig. 4
a corresponding view in the area of a wall protection box for a securing bolt on a door side spar,
Fig. 5
a horizontal section in the area of a hinge and
Fig. 6
a representation accordingly Fig. 1 in an alternative embodiment as a surrounding frame.

Die Fig. 1 zeigt einen horizontalen Schnitt durch eine erfindungsgemäße Stahlzarge im Bereich eines schlossseitigen Zargenholmes im eingebauten Zustand. In dem dargestellten Abschnitt sind keine besonderen Einbauten, wie zum Beispiel Schutzkästen für Sicherungsbolzen oder Verriegelungselemente, Befestigungselemente, Bandaufnahmen und dergleichen angeordnet. Obwohl in der Figur konkret ein Horizontalschnitt durch den schlossseitigen, vertikal verlaufenden Zargenholm der Zarge dargestellt ist, entspricht diese ebenfalls einen Vertikalschnitt durch den horizontal über den Seitenholmen verlaufenden Querholm der Stahlzarge sowie - gespiegelt - einen Horizontalschnitt durch einen einbautenfreien Bereich des türseitigen Zargenholmes.The Fig. 1 shows a horizontal section through a steel frame according to the invention in the area of a lock-side frame spar in the installed state. In the section shown, no special internals, such as protective boxes for securing bolts or locking elements, fastening elements, tape receptacles and the like, are arranged. Although in the figure a horizontal section through the lock-side, vertically running frame spar of the frame is shown, this also corresponds to a vertical section through the horizontal spar of the steel frame running horizontally over the side rails and - mirrored - a horizontal section through an installation-free area of the door-side frame spar.

Die als Eckzarge ausgebildete Stahlzarge ist mit einem Blechformteil 1 gebildet und mit einer Wand 2 verbunden. An dem Blechformteil 1 schlägt ein Türblatt 3 an, welches lediglich schematisch angedeutet ist. Das Türblatt 3 ist im Ausführungsbeispiel als Dünnfalztür ausgebildet. Die erfindungsgemäße Stahlzarge ist jedoch ohne Beschränkung der Erfindung auch mit Dickfalztüren oder stumpf anschlagenden Türen verwendbar.The steel frame designed as a corner frame is formed with a sheet metal molded part 1 and connected to a wall 2. A door leaf 3 strikes the sheet metal part 1, which is only indicated schematically. In the exemplary embodiment, the door leaf 3 is designed as a thin rebate door. The invention However, steel frames can also be used with thick rebate doors or flush-fitting doors without restricting the invention.

Erfindungsgemäß weist das Blechformteil einen türseitigen Zargenspiegel 4, einen an den türseitigen Zargenspiegel 4 anschließenden, rechtwinklig in Richtung der Türöffnung abgewinkelten Falzbereich 5 auf. An die dem türseitigen Zargenspiegel 4 abgewandten Seite des Falzbereichs 5 schließt ein Anschlagsbereich 6 an, welcher sich flächenparallel zum türseitigen Zargenspiegel 4 erstreckt. An dem Anschlagsbereich 6 ist eine Nut 7 zur Aufnahme einer Türdichtung 8 ausgebildet. Die Türdichtung 8 wird durch ein elastisches Hohlkammerprofil gebildet, welches mit Übermaß in die Nut 7 eingedrückt wird. An den Anschlagsbereich 6 schließt ein parallel zum Falzbereich 5 ausgerichteter Laibungsbereich 9 an. Laibungsbereich 9 und Falzbereich 5 sind parallel zum Rand der in der Wand 2 ausgebildeten Maueröffnung ausgerichtet. An den Laibungsbereichen 9 schließt ferner ein Umbug 10 an, welcher in Richtung des türseitigen Zargenspiegels 4 abgewinkelt und parallel zu diesem ausgerichtet ist. Zwischen dem Umbug 10 und der Wand 2 verbleibt im eingebauten Zustand ein Spalt der Breite a.According to the invention, the sheet metal part has a frame mirror 4 on the door side, a rebate area 5 adjoining the frame mirror 4 on the door side and angled at right angles in the direction of the door opening. A stop area 6 adjoins the side of the rebate area 5 facing away from the door-side frame mirror 4, which extends parallel to the door frame frame 4. A groove 7 for receiving a door seal 8 is formed on the stop area 6. The door seal 8 is formed by an elastic hollow chamber profile, which is pressed into the groove 7 with an oversize. A reveal area 9 aligned parallel to the fold area 5 adjoins the stop area 6. Reveal area 9 and fold area 5 are aligned parallel to the edge of the wall opening formed in wall 2. At the reveal areas 9 there is also a fold 10, which is angled in the direction of the door-side frame mirror 4 and aligned parallel to it. In the installed state, a gap of width a remains between the fold 10 and the wall 2.

Erfindungsgemäß ist an der Innenseite des Blechformteils ein Intumeszenzmaterial ausschließlich in Form eines türseitigen Intumeszenzstreifens 11 zumindest abschnittsweise an der Innenseite des Falzbereichs 5 und eines laibungsseitigen Intumeszenzstreifens 12 an der Innenseite des Umbugs 10 angeordnet. Die Innenseite des Zargenspiegels 4 und die Innenseite des Laibungsbereichs 9 sind frei von Intumeszenzmaterial. Im dargestellten Ausführungsbeispiel ist der laibungsseitige Intumeszenzstreifen 12 durchgängig über die gesamte Längserstreckung des Blechformteils 1 ausgebildet, so dass er in sämtlichen Darstellungen der nachfolgenden Schnittzeichnungen an der Innenseite des Umbugs 10 gleichermaßen sichtbar ist.According to the invention, an intumescent material is arranged on the inside of the sheet metal part exclusively in the form of a door-side intumescent strip 11, at least in sections, on the inside of the rebate area 5 and an embrasure-side intumescent strip 12 on the inside of the fold 10. The inside of the frame mirror 4 and the inside of the reveal area 9 are free of intumescent material. In the exemplary embodiment shown, the soffit-side intumescent strip 12 is formed continuously over the entire longitudinal extent of the sheet metal molded part 1, so that it is equally visible on the inside of the fold 10 in all representations of the subsequent sectional drawings.

Die Fig. 2 zeigt einen Horizontalschnitt durch den schlossseitigen Zargenholm im Bereich eines Befestigungselementes 13. In diesem Bereich ist der türseitige Intumeszenzstreifen 11 an der Innenseite des Falzbereichs 5 unterbrochen. Stattdessen ist im Bereich des Befestigungselementes 13 ein Abschnitt 11a des türseitigen Intumeszenzstreifens 11 an der Innenseite des Anschlagsbereichs 6 angeordnet. Analog stellt sich die Situation auch bei Befestigungselementen 13 im Bereich des Querholms bzw. des türseitigen Zargenholms dar.
In der Schnittdarstellung gemäß Fig. 3 ist in dem Winkel zwischen dem Zargenspiegel 4 und dem Falzbereich 5 ein Schutzkasten 14 für ein Verriegelungselement 15 angeordnet. Der türseitige Intumeszenzstreifen 11 ist im Bereich des Schutzkastens 14 an der Innenseite des Falzbereichs 5 unterbrochen. Auf dem Schutzkasten 14 liegt ein Abschnitt 11b des türseitigen Intumeszenzstreifens 11 auf. Dabei entspricht der Abschnitt 11b des Intumeszenzstreifens auf den Schutzkasten 14 in Breite und Stärke dem türseitigen Intumeszenzstreifen 11 unmittelbar an der Innenseite des Falzabschnitts 5 in unmittelbarer Umgebung des Schutzkastens 14 in Längserstreckungsrichtung des Blechprofils 1. Die Länge des Abschnitts 11b an der Oberseite des Schutzkastens 14 in Längserstreckungsrichtung des Blechprofils 1 entspricht der Länge der Unterbrechung des an den Falzbereich 5 unmittelbar angeordneten türseitigen Intumeszenzstreifens 11. Der Abschnitt 11b ist zu den anschließenden Intumeszenzstreifen 11 flächenparallel angeordnet. Bei dem Schließelement kann es sich beispielsweise - wie in Fig. 3 dargestellt - um eine Türfalle 15 oder - wie in Fig. 4 dargestellt - um einen Sicherungsbolzen 16 handeln.The Fig. 2 shows a horizontal section through the frame spar on the lock side in the area of a fastening element 13. In this area the door-side intumescent strip 11 is interrupted on the inside of the rebate area 5. Instead, a section 11a of the door-side intumescent strip 11 is arranged on the inside of the stop area 6 in the area of the fastening element 13. The situation is similar in the case of fastening elements 13 in the region of the cross member or the door side member.
In the sectional view according to Fig. 3 a protective box 14 for a locking element 15 is arranged in the angle between the frame mirror 4 and the rebate area 5. The intumescence strip 11 on the door is interrupted in the area of the protective box 14 on the inside of the fold area 5. A section 11b of the intumescent strip 11 on the door lies on the protective box 14. The section 11b of the intumescent strip on the protective box 14 corresponds in width and thickness to the intumescent strip 11 on the door side directly on the inside of the folded section 5 in the immediate vicinity of the protective box 14 in the longitudinal direction of extension of the sheet metal profile 1. The length of section 11b on the upper side of the protective box 14 in The longitudinal direction of the sheet metal profile 1 corresponds to the length of the interruption of the door-side intumescent strip 11 arranged directly on the rebate area 5. Section 11b is arranged parallel to the adjacent intumescent strips 11. The closing element can, for example - as in Fig. 3 shown - around a door latch 15 or - as in Fig. 4 shown - act as a securing bolt 16.

In Fig. 5 ist erkennbar, dass an dem türseitigen Zargenholm in dem Winkel zwischen dem Zargenspiegel 4 und dem Falzbereich 5 ein Befestigungswinkel 17 zur Befestigung eines Türbandes 18 vorgesehen ist. Dabei ist der türseitige Intumeszenzstreifen 11 im Bereich des Befestigungswinkels 17 an der Innenseite des Falzbereichs 5 ausgespart. Auf dem Befestigungswinkel 17 ist flächenparallel zum türseitigen Intumeszenzstreifen an der Innenseite des Falzbereichs 5 ein Bandwinkelabschnitt 11c des türseitigen Intumeszenzstreifens 11 angeordnet. Aufgrund des geringeren Bauraums zwischen dem Blechprofil 11 und der Wand 2 im Bereich des Türbandes 18 und des Befestigungswinkels 17 kann der Bandwinkelabschnitt 11c in seiner Breite schmaler ausgebildet sein als der türseitige Intumeszenzstreifen 11 unmittelbar an der Innenseite des Falzbereichs 5.In Fig. 5 it can be seen that a fastening angle 17 for fastening a door hinge 18 is provided on the door-side frame spar in the angle between the frame mirror 4 and the rebate area 5. In this case, the intumescent strip 11 on the door side is recessed in the area of the fastening angle 17 on the inside of the fold area 5. On the mounting bracket 17 is A band angle section 11c of the door-side intumescent strip 11 is arranged on the inside of the fold area 5 parallel to the surface of the door-side intumescent strip. Due to the smaller installation space between the sheet metal profile 11 and the wall 2 in the area of the door hinge 18 and the fastening angle 17, the hinge angle section 11 c can be made narrower in width than the intumescent strip 11 on the door side directly on the inside of the rebate area 5.

Fig. 6 zeigt eine Darstellung entsprechend Fig. 1 bei einer alternativen Ausführungsform, mit einer zweiteiligen Umfassungszarge. Das Blechprofil 1 ist dabei mit einer Gegenzarge 19 verbunden. Die Umfassungszarge umgreift somit die Wand 2 im Einbauzustand beidseits. Die Gegenzarge 19 ist ohne Intumeszenzmaterial ausgebildet. Sie liegt am Laibungsabschnitt 9 sowie am Umbug 10 flächig an und ist durch eine in den Grund der Nut 8 eingreifende Befestigungsschraube 20 mit dem Blechprofil 1 verbunden. Zusätzlich kann die Gegenzarge 19 durch eigene Befestigungselemente 21 mit der Wand 2 verbunden sein. Fig. 6 shows a representation accordingly Fig. 1 in an alternative embodiment, with a two-part frame. The sheet profile 1 is connected to a counter frame 19. The surrounding frame thus encompasses the wall 2 on both sides in the installed state. The counter frame 19 is designed without intumescent material. It lies flat on the reveal section 9 and on the fold 10 and is connected to the sheet metal profile 1 by a fastening screw 20 engaging in the bottom of the groove 8. In addition, the counter frame 19 can be connected to the wall 2 by its own fastening elements 21.

Claims (9)

  1. A steel door case with fire-retardant properties with a sheet metal moulded part (1), which comprises a door-side door case surface (4), a rebate section (5) angled at right angles and adjoining the door-side door case surface (4), an abutment section (6) adjoining the side of the rebate section (5) facing away from the door-side door case surface (4), a reveal section (9) aligned in parallel with the rebate section (5) and adjoining the abutment section (6), and an edge fold (10) adjoining the reveal section (9), angled in the direction of the door case surface and aligned parallel with the latter, wherein an intumescent material (11, 11a, 11b, 11c, 12) is arranged at the inner side of the sheet metal moulded part (1), characterised in that the intumescent material (11, 11a, 11b, 11c, 12) is arranged exclusively in the form of a door-side intumescent strip (11, 11a, 11b, 11c, 12) at least in sections at the inner side of the rebate section (5) and in the form of a reveal-side intumescent strip (12) at the inner side of the edge fold (10) and that the inner side of the door case surface (4) and the inner side of the reveal section (9) are free from intumescent material.
  2. The steel door case according to claim 1, characterised in that the reveal-side intumescent strip (12) is arranged continuously over the entire longitudinal extent of the sheet metal moulded part (1) at the inner side of the edge fold (10).
  3. The steel door case according to claim 1 or 2, characterised in that a fastening element (13) for fastening to a wall is arranged in the angle between the door case surface (4) and the rebate section (5), that the door-side intumescent strip (11) is omitted in the region of the fastening element (13) at the inner side of the rebate section (5) and that in the region of the fastening element (13) a section (11a) of the door-side intumescent strip (11) is arranged at the inner side of the abutment section (6).
  4. The steel door case according to any one of claims 1 to 3, characterised in that a protection box (14) for a locking element (15, 16) is arranged in the angle between the door case surface (4) and the rebate section (5), that the door-side intumescent strip (11) is interrupted in the region of the protection box (14) at the inner side of the rebate section (5) and that a section (11b) of the door-side intumescent strip (11) is laid on the protection box (14).
  5. The steel door case according to claim 4, characterised in that the section (11b) of the intumescent strip (11) on the protection box (14) corresponds in width and thickness to the door-side intumescent strip (11) directly at the inner side of the rebate section (5) in the immediate vicinity of the protection box (14) and that the length of the section (11b) at the upper side of the protection box (14) has a length which corresponds to the length of the interruption of the door-side intumescent strip (11) arranged directly on the rebate section (5).
  6. The steel door case according to claim 4 or 5, characterised in that the section of the door-side intumescent strip (11b) arranged at the upper side of the protection box (14) is surface-parallel to the door-side intumescent strip (11) arranged directly on the inner side of the rebate section (5).
  7. The steel door case according to any one of claims 1 to 6, characterised in that an angle bracket (17) of a door hinge (18) is fastened on the inside in the angle between the door case surface (4) and the rebate section (5), that the door-side intumescent strip (11) is omitted in the region of the angle bracket (12) at the inner side of the rebate section (5) and that a hinge angle section (11c) of the door-side intumescent strip is arranged on the angle bracket (17) surface-parallel to the door-side intumescent strip (11) at the inner side of the rebate section (5).
  8. The steel door case according to any one of claims 1 to 7, characterised in that the door-side intumescent strip (11, 11a, 11b, 11c) is formed multi-part in the longitudinal extent direction of the sheet metal moulded part (1) and without overlapping.
  9. The steel door case according to any one of claims 1 to 8, characterised in that the steel door case is designed as a two-part enclosing door case, wherein the counter door case (19) can be fastened to the sheet metal moulded part (1) and wherein the counter door case (19) is designed without intumescent material.
EP18207825.3A 2017-12-05 2018-11-22 Backfill with intumescent material Active EP3495595B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017128873.2A DE102017128873A1 (en) 2017-12-05 2017-12-05 Backfill with intumescent material

Publications (2)

Publication Number Publication Date
EP3495595A1 EP3495595A1 (en) 2019-06-12
EP3495595B1 true EP3495595B1 (en) 2020-01-22

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ID=64453387

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Application Number Title Priority Date Filing Date
EP18207825.3A Active EP3495595B1 (en) 2017-12-05 2018-11-22 Backfill with intumescent material

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EP (1) EP3495595B1 (en)
DE (1) DE102017128873A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018126563A1 (en) * 2018-10-24 2020-04-30 Novoferm Riexinger Türenwerke GmbH Fire closure
GB2606453A (en) * 2020-01-17 2022-11-09 Linear Building Innovations Ltd Door seal
GB2591134B (en) * 2020-01-17 2022-05-11 Linear Building Innovations Ltd Door seal
CN113236075B (en) * 2021-04-28 2023-01-10 中颐工科工程技术有限公司 Door and window convenient to installation based on architectural design structure

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
CH625593A5 (en) * 1977-11-22 1981-09-30 Novopan Ag
FR2477625A2 (en) 1980-03-06 1981-09-11 Crouzilles Jean Louis Frame for fire stop door - has bands of expanding material creating thermal bridges dissipating heat
DE4428470C1 (en) * 1994-08-11 1995-08-24 Theo Schroeders Fire protection closure
DE102008031364A1 (en) * 2008-07-04 2010-01-07 Stöbich Brandschutz GmbH frame

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102017128873A1 (en) 2019-06-06
EP3495595A1 (en) 2019-06-12

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