DE102013003211B4 - Multi-leaf fire door and fire door for this purpose - Google Patents

Abstract

Multi-wing fire door (10) according to one or more claims according to the main patent 10 2012 110 456.5 with a first about a first vertical axis to be pivoted fire door (14) and a second about a second vertical axis to be pivoted fire door (18), so that the fire door (14 , 18) in the closed state of the fire door (10) capture each other, wherein the fire protection door wings (14, 18) by means of jacket plates (26, 30) with a filling (34) are constructed therein, wherein at least one jacket plate (26, 30) of the first Fire protection door leaf (14, 18) and a jacket plate (26, 30) of the second fire door (14, 18) are designed such that they engage behind each other or hooked in the closed state, wherein the jacket plates (26, 30) each other only in the region of behind two wide sides (44, 46) of the fire door (10) engage or hook.

Description

The invention relates to a mehrflügelige fire door with fire doors according to the main patent 10 2012 110 456.5, which are formed from supporting jacket plates with a filling therein.

A mehrflügelige fire door is z. B. from the DE 196 49 443 B4 known. This document relates to a fire door with a first door leaf and a second door leaf, the door leaf having a cover plate and a box sheet as sheath plates. A leaf is provided with a lock with a catch, which can snap into an abutment on the inactive leaf. The end faces with lock or thrust bearing are referred to below - in contrast to the band-side end faces - as a lock-side end faces. At these castle side front sides both wings of the DE 196 49 443 B4 a U-shaped profile design on and on the opposite broad side of a stepped recess. The U-shaped profile design is added with the door closed in the step-shaped recess of the other door leaf. The respective other door has in its step-shaped recess resting on the metal sheet on a seal from intumescent material in the event of fire, which serves to foam the door gap between the two fire doors in case of fire. These seals are obviously glued to the metal sheets and serve solely for sealing purposes.

Structures of fire doors must be approved by the building authorities. For this purpose, the manufacturers of fire doors with a new design must perform standardized fire tests that demonstrate the fire protection properties. For this purpose, the fire doors with frame and door are installed in a test wall and installed on a test furnace in order to heat them from the one side over the prescribed period of protection. For example, a class T30 fire door must withstand this for at least 30 minutes. If there are flames during the fire test, or if the fire door on the side facing away from the fire becomes inadmissibly hot, then the fire test is failed. An approval is only available upon proof of a passed fire test.

In fire doors whose doors are constructed of jacket plates with filling therein occurs in such fire tests the so-called "bi-metal effect" on. The fire facing cladding sheet expands due to the greater heat more than the brand-facing sheet metal. Due to the different thermal expansion gets the whole door leaf of the door under considerable tension and bends accordingly. These bending forces must absorb the fire door. The bending must not be so great that this creates impermissibly large gaps through which hot gases could escape. There are very large forces.

The respective door is held on the one hand by the hinges and on the other hand only by the catch. It should be noted here that the fire doors must be in the unlocked state, purely by holding the catch the fire test.

This is not trivial even with single-leaf doors. Larger problems occur even with mehrflügeligen doors, for example, with fixed leaf and active leaf on. Here, the two fire doors are held by the hinges on their sides alone. A passive leaf can still be held by vertical locking elements on the upper frame spar and / or on the ground; The usually very wide-trained active leaf must then be supported on the anvil of the passive leaf alone by the catch.

In order to create a safe fire protection structure, a complex lock construction with several Schnäppern was necessary due to the high bending forces in case of fire, so that several bases were available for the active leaf.

The object of the invention is to provide a cost-effective multi-leaf fire door, which can be equipped with a standard door lock.

This object is achieved by a fire door according to claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.

The invention provides a multi-wing fire door with a first about a first vertical axis to be pivoted fire doors and a second pivot about a second vertical axis fire doors, so that the fire wings in the closed state of the fire door with their remote from the high axes to be arranged lock side end faces each other, wherein the fire doors each having sheet metal door leaves, which are constructed by means of jacket plates with a filling therein, wherein at least one jacket plate of the first fire door and a jacket plate of the second fire door are designed such that they engage behind each other in the closed state or hooked.

According to the present invention, it is further proposed that the fire protection door wings engage or catch one another continuously on only one side.

Surprisingly, only a one-sided rear grip, on only one of the broad sides has proven to be sufficient for a secure grip even in case of fire.

By forming a rear grip on only one side, the production compared to doors with underbody handles on both sides can be substantially simplified and material-saving design. Also, the adjustment is easier and the tolerances can be kept large in larger areas.

It is preferred that the at least one jacket plate of the first fire door panel and the at least one jacket plate of the second fire door having mutually complementary Metallstufenausbildungen for hooking the fire door wings in the closed state of the fire door.

Metallstufenausbildungen can z. B. be formed by flanks of groove-shaped recesses or by flange-like projections.

It is preferred that the door wings have each other over the entire height or at least a majority of the height of the lock-side end side in the closed state of the door engages behind each other metal profiles.

It is preferred that one of the fire door has on a broad side in the region near the edge to the lock-side end side a groove-shaped in the thickness direction inwardly jumping back in his broad side forming jacket sheet and the other fire door has a thickness inwardly inwardly projecting projection for engaging in the Has a return.

It is preferred that the fire protection door wings engage behind at both transitional areas between the lock-side end side and the first and the second broad side of the respective fire protection door leaf in the closed state, so that a rear grip is formed on both broad sides.

It is preferred that the one fire door on one broadside the return and the other fire door on this one broad side corresponding to the projection and that on the other broad side of a fire door has the projection and the other fire door wing the return.

It is preferred that at least one rear hook structure is formed by a plurality of layers of the bent jacket sheets and / or by at least one layer of the jacket sheet and at least one metal reinforcement plate.

It is preferred that the at least one metal reinforcement plate is formed by a lock plate and / or an abutment plate serving as an abutment for a lock.

Further, the invention provides a fire door for such a fire door whose fire door has a first cladding sheet to form a first broadside and a second cladding sheet to form a second broadside, wherein one of the cladding sheets in the vicinity of an edge in the transition to a lock-side end face a substantially parallel to the lock-side end extending in the thickness direction recessed groove formation for positively receiving a projection education of another fire door and the other jacket plate is formed protruding in the direction of the edge in the transition to the lock side end in the thickness direction inwardly to a projection for positive engagement in a return of the other fire door to build.

In the fire door according to the invention, the shrouds of the first and second fire door wings engage behind and / or get caught in the closed state. In addition to the holding by the catch thus can be included in the case of fire through the behind hooked or behind-engaging shrouds of the two fire doors. Due to the metal support so considerable forces can be absorbed; the provision of multiple catch can be omitted.

Preferably, a rear hook construction is provided along the entire central impact area.

For this purpose, preferably the jacket plates are provided with complementary projection-recess formations, so that a jacket plate of a door leaf engages behind a jacket plate of the other door leaf in the closed state of the door form fit. For example, in a preferred embodiment of the invention, a metal sheet edge fold formed by a U-shaped metal profile configuration does not only grip a glued-on seal, but engages in a groove-shaped profile design, in particular a groove-shaped recess, formed with metal flanks in the metal of the other door leaf ,

In order to provide a fixed resistance, the at least one Hinterhakausbildung is provided in a preferred embodiment either by multiple layers of the respective metal sheets or reinforced by additional metal inserts. For example, a metal plate may be provided which extends in the thickness direction and forms a groove flank. As a sheet metal plate, for example, a lock plate or reinforcing plate for the lock or a counter-bearing plate, which serves as an abutment for detecting locking and Schnäpperelementen the lock on the respective other door, serve as a reinforcing plate.

In a further advantageous embodiment, the multi-wing fire door comprises a first about a first vertical axis to be pivoted fire doors and a second to be pivoted about a second vertical axis fire door so that the fire doors cover each other in the closed state of the fire door, the fire doors by means of jacket plates with a filling are constructed, wherein at least one jacket plate of the first fire door and a jacket plate of the second fire door are designed such that they engage behind or hook each other in the closed state, wherein the jacket plates engage or catch each other only in the region of one of the two broad sides of the fire door.

The unilateral rear handle serves to support each other of the door and creates next to the catch additional support points for the door. In this way it is possible to use a standard lock instead of a special lock. In addition, the use of only one rear grip requires fewer manufacturing steps to manufacture the door wings, since at least one projection is not needed. This also consumes less material during production. The production of such a fire door is simplified compared to known fire doors and cheaper.

In case of fire, a broad side of the fire door expands and the filling material swells up. This creates enormous forces that lead to a hooking of the rear handle, which prevents a gap formation in the fire door and the fire side against the other side effectively seals, especially if the fire door is not locked.

It is preferred that the cladding plates engage or hook only on the hinge side.

In this arrangement of the rear handle, the mutual support of the door is improved even when a fire occurs on the Gegenbandseite. In this case, the gegenbandseitige broad side expands strongly, resulting in a force on the fire door, which presses them on the band side (ie in the opening direction). The band-side rear grip is loaded on train and hooks the fire doors firmly to each other. As a result, a gap formation and thus the escape of hot combustion gases is effectively prevented, even if the fire door is not locked and is held only by a single catch.

It is preferred that the fire-protection door wings engage behind at a transitional area between the lock-side end side and the first and the second broad side of the respective fire-protection door leaf in the closed state, so that a rear grip is formed on a broad side.

The biggest shortcoming of conventional multi-leaf fire doors is the mid-span area where the two wings catch each other. An improved behavior in case of fire can be achieved by providing the rear handle in this center shock region, since the greatest forces act here due to the leverage of the door. The rear handle can in this case effectively absorb these forces and prevent the formation of a gap in the center joint area, even if the fire door is not locked and is held only by the catch.

It is preferred that the rear grip in the closed state extends along the entire extent of the fire door wings in a direction parallel to the vertical axes.

Compared to multi-leaf fire doors in which the door support each other at several support points, a continuous rear handle improves the behavior of the fire door considerably, since the resulting forces in case of fire are distributed to the entire fire door and not punctiform act.

It is preferred that in a region of the band-side broad side of the rear handle is formed and in a region on the gegenbandseitigen broadside of a fire door wings a step and the other fire door has a step engaging in the projection.

In the case of a fire on the opposite side of the belt, the fire door is pressed by the "bi-metal effect" on the belt side (ie in the opening direction). The gegenbandseitige projection is then supported on the counter-belt side stage and is charged to pressure. The projection seals the fire side from the other side of the fire door and prevents the escape of fire gases on the other side.

It is preferred that the projection on the opposite band-side broad side of a fire door wing has a sealing groove and the step on the gegenbandseitigen broadside of the other fire door panel has a sealing contact surface.

In the normal state (i.e., in the case of no fire), it is desired that a fire door have similarly good sealing properties as an ordinary door. For this purpose, an elastic seal (usually rubber seal) is attached to the fire door. In case of fire, the seal, the escape of fumes, in the event of a band-sided fire permanently, at least initially, in the event of a counter fire side, prevent.

In a further advantageous embodiment of the fire door is characterized in that it on the band side broadside in the thickness direction to the gegenbandseitigen broadside projecting projection for engaging in a return of another fire door and on the gegenbandseitigen broadside in the thickness direction to the band-side broadside recessed stage for recording having a projection of another fire door.

Such a fire door is suitable for a fire door above and easier and cheaper to manufacture compared to known fire doors, as this embodiment comprises only one projection.

Embodiments of the invention will be explained in more detail with reference to the accompanying drawings. Show:

1 a front view of a multi-leaf fire door with a first fire door and a second fire door and a frame;

2 a horizontal section through the fire door along the line AA of 1 ;

3 an enlarged view of the detail X from 2 ;

4 a vertical section through the fire door along the line BB of 1 ,

In 1 is a multi-leaf fire door 10 with a frame 12 and a first fire door 14 in the form of a passive grand piano 16 and a second fire door 18 in the form of a grand piano 20 shown.

The fire protection door leaves 14 . 18 are by means of door hinges 22 on the frame 12 hinged pivotable about a vertical axis and capture in the closed state of the fire door 10 each other in a center bumper area 24 ,

How out 2 As can be seen, the fire doors are fire doors 14 . 18 each by a first jacket plate 26 in the form of a box plate 28 and a second jacket sheet 30 in the form of a cover plate 32 and by an insulating filling 34 in that by the box sheet 28 and the cover sheet 32 formed door leaf interior.

In the middle push area 24 who in 2 and enlarged in 3 is shown, is the active leaf 20 with a standard lock 36 with a flycatcher 42 and a latch (not shown). The passive wing 16 is with a counter bearing plate 38 with receiving openings 40 for the flycatcher 42 and the bolt provided.

The respective box sheet 28 forms a first broadside 44 , z. B. a Gegenbandseite 45 , the fire door 10 and the respective fire door 14 . 18 ; and the cover sheet 32 forms a second broadside 46 , z. B. a band side 47 , the fire door 10 or the respective fire door 14 . 18 ,

The vertical front, in the area of the hinges 22 are attached are called band-side end faces 48 designated, while the front sides in the middle shock area 24 where the standard lock 36 and the counter bearing plate 38 are included, as the lock-side end faces 50 be designated.

How one 3 can be in the range of the first edge 200 that is in the transition between the first broadside 44 and the lock-side front 50 of the active wing 20 is located, the box sheet 28 of the active wing 20 starting from a large area, the first broadside 44 forming obliquely bent inwards to a stepped edge 202 to form, then continue parallel to the first broadside 44 led to a step surface 204 to build.

In one embodiment, the step surface 204 a sealing contact surface 203 for detecting and supporting one on the first fire door 14 arranged sealing profile 205 exhibit.

The step edge 202 and the step surface 204 form a step-like return 206 in the form of a more or less zigzag-shaped metal profile 208 by bending in the box sheet 28 of the active wing 20 has been formed.

The box sheet 28 of the active wing 20 is continued in the thickness direction and thus forms the lock side end face 50 of the active wing 20 and extends in the thickness direction across the thickness of the active leaf 20 up to the area of the second broadside 46 , In this area of the second broadside 46 is in the transition between the lock side end face 50 and the second broadside 46 the end portion of the box plate U-shaped profile bent twice, with this U-profile 67 the groove legs or groove flanks and the groove base region of a groove which opens inward in the direction of the thickness to the inactive leaf 68 forms.

The free leg of this U-profile configuration in the region of the second edge 66 forms a protruding in the thickness direction inward projection 70 in the area of the second edge 66 ,

The cover sheet 32 the active wing is mostly just trained to the second broadside 46 to build. In the area of the second edge 66 the cover plate extends over the groove 68 forming U-profile shape of the box panel 28 of the active wing 20 and is about the lead 70 forming edge strip area 72 of the box sheet 28 bent around. This is the aisle 20 the cover sheet 32 with the box sheet 28 hooked, with the bend 74 the edge region of the cover plate 32 along with the edge trim area 72 the second projection 70 in the area of the second edge 66 forms.

The box sheet 28 of the passive leaf 16 has a large flat area for forming the first broadside 44 and is in the area of the third edge 76 in the transition between the first broadside 44 and the lock-side front 50 of the passive leaf 16 bent over and completely folded back, leaving in the area of this third edge 76 an oblique multilayer flange 78 is formed, on the one hand a groove flank 80 a profile groove 82 in the area of the third edge 76 and on the other hand, an inward protrusion 84 of the passive leaf 16 forms, with the door closed in the step-like recess 206 of the active wing 20 intervenes.

Then to the flange 78 is the box sheet 28 of the passive leaf 16 further parallel to the first broadside 44 running trained, so that two layers of the box plate 28 a groove bottom 86 the profile groove 82 form. Subsequently, the box plate 28 of the passive leaf 16 bent in the thickness direction extending and then extends across the entire thickness of the inactive leaf 16 , so the lock-side end face 50 of the passive leaf 16 to build. Thus, the oblique flange form 78 and this extending in the thickness direction region of the box plate 28 the groove sides 80 the profile groove 82 which opens inward in the thickness direction. For example, the profile groove 82 as a sealing groove 210 for receiving and securing a provided on the first fire door wing gasket 205 be used.

In the embodiment shown, the sealing profile lies 205 at the sealing contact surface 203 in the closed state and seals the Gegenbandseite 45 opposite the band side 47 the fire door 10 from.

The lock-side front page 50 of the passive leaf 16 points further to where the active leaf 20 the standard lock 36 has, the counter-bearing plate 38 on. Otherwise, the lock side end face 50 through the thicknesswise extending portion of the folded box panel 28 of the passive leaf 16 formed, extending across the thickness of the inactive leaf 16 extends and in the area of the second broadside 46 bent back on itself to be in the area of the fourth edge 90 that the transition between the lock-side end and the second broadside 46 on the inactive leaf 16 forms a projection extending in the thickness direction 92 to build. This as a flange 94 by folding over the box sheet 28 and in the area of the lock by the counter bearing plate 38 reinforced lead 92 simultaneously forms a first groove flank 96 a groove-shaped recess 98 in the area of the fourth edge 90 on the inactive leaf 16 into which the lead 70 at the second edge 66 of the active wing 92 engages in the closed state of the door. This groove-shaped recess 98 is by U-shaped end configuration of the outermost edge portion of the box plate 28 of the passive leaf 16 educated. In the area of the second groove flank 100 this groove-shaped recess 98 are the lid cup 32 and the box sheet 28 of the passive leaf 16 hooked together by interlocking bends.

Through the groove-shaped recess 98 and the opposing groove 68 is a backgrip 102 in the area of the second broadside 46 educated.

The backgrip 102 forms a metallically executed Hinterhakstruktur 104 with which the fire doors 14 . 18 in the closed state of the fire door 10 backhook, so that they are positively supported on the occurrence of high bending forces in case of fire and so a bending out of the fire doors 14 . 18 avoid in case of fire.

Between the respective projection 70 . 84 . 92 and the respective groove-shaped recess 98 . 68 . 82 or stepped return 206 Distances are also provided in the closed state of the door, so that on the one hand grinding the door 14 . 18 when closing and opening in normal use - without a fire - is avoided and on the other hand, in case of fire, the respective door 14 . 18 First, you can dodge something to compensate for tension forces until the Hinterhakstruktur 104 positively engages.

Due to the Hinterhakstrukturen 104 The castle can be used as a standard castle 36 with just a snap 42 be educated.

How to do the presentation in 4 can be removed, the inactive leaf 16 by simple locking bolts 106 set in its closed position, in an upper Zargenholm the frame 12 and in a recessed in the ground threshold 108 intervention.

LIST OF REFERENCE NUMBERS

10

Fire door

12

frame

14

first fire door

16

Fixed leaf

18

second fire door

20

leaf

22

door hinges

24

Means the joint area

26

first jacket sheet

28

box sheet

30

second jacket sheet

32

cover sheet

34

filling

36

standard lock

38

Opposed bearing plate

40

receiving opening

42

Catches

44

first broadside

45

Against hinge side

46

second broadside

47

hinge side

48

hinge-side end faces

50

lock side end face

66

second edge

67

U-profile

68

groove

70

head Start

72

Edge trim area of the box sheet

74

bend

76

third edge

78

oblique flange

80

flank

82

profile groove

84

head Start

86

groove base

90

fourth edge

92

head Start

94

flange

96

first groove flank

98

groove-shaped recess

100

second groove flank

102

rear grip

104

Hinterhakstruktur

106

locking bolt

108

threshold

200

first edge

202

step flank

203

Seal contact area

204

step surface

205

weatherstrip

206

stepped return

208

metal profile

210

seal groove

Claims (6)

Multi-leaf fire door ( 10 ) according to one or more claims according to the main patent 10 2012 110 456.5 with a first about a first vertical axis to be pivoted fire doors ( 14 ) and a second about a second vertical axis to be pivoted fire door ( 18 ), so that the fire doors ( 14 . 18 ) in the closed state of the fire door ( 10 ) capture each other, the fire doors ( 14 . 18 ) by means of jacket plates ( 26 . 30 ) with a filling ( 34 ) are constructed therein, wherein at least one jacket plate ( 26 . 30 ) of the first fire door ( 14 . 18 ) and a jacket sheet ( 26 . 30 ) of the second fire door ( 14 . 18 ) are designed such that they engage behind each other in the closed state or hook, wherein the jacket plates ( 26 . 30 ) only in the range of one of the two broadsides ( 44 . 46 ) of the fire door ( 10 ) behind or hooked. Multi-leaf fire door ( 10 ) according to claim 1, characterized in that the jacket plates ( 26 . 30 ) only on the band side ( 45 ) behind or hooked. Multi-leaf fire door ( 10 ) according to one of claims 1 or 2, characterized in that the fire doors ( 14 . 18 ) at a transition region between the lock-side end face ( 50 ) and the first or the second broadside ( 44 . 46 ) of the respective fire door ( 14 . 18 ) engage in the closed state, so that on a broadside ( 44 . 46 ) a backgrip ( 102 ) is formed. Multi-leaf fire door ( 10 ) according to claim 3, characterized in that the rear grip ( 102 ) in the closed state along the entire extent of the fire door wings ( 14 . 18 ) extends in a direction parallel to the vertical axes. Multi-leaf fire door ( 10 ) according to one of claims 1 to 4, characterized in that in a region of the band-side broadside ( 46 ) the backgrip ( 102 ) is formed and in an area on the gegenbandseitigen broadside ( 44 ) of a fire door ( 18 ) a stepped return ( 206 ) and the other fire door ( 14 ) one in the stepped return ( 206 ) engaging projection ( 84 ) having. Multi-leaf fire door ( 10 ) according to claim 5, characterized in that the projection ( 84 ) on the gegenbandseitigen broadside ( 44 ) of a fire door ( 14 ) a sealing groove ( 210 ) and the stepped return ( 206 ) on the gegenbandseitigen broadside ( 44 ) of the other fire door ( 18 ) a sealing contact surface ( 203 ) having.

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