ES2812571T3 - Fire door leaf for a single or multi-leaf fire door - Google Patents

Abstract

Fire door leaf (100, 200, 300, 500) for a fire door (10) where the fire door leaf (100, 200, 300, 500) has at least one sheet (101, 201, 301, 501) casing and a filler (102), where a hooking device (140, 340, 540) arranged on the casing sheet (101, 201, 301, 501) always hooks another element of the door of the fire door (10) when the Fire door (10) is in a closed state, where the hooking device (140, 340, 540) has a housing element (141, 341, 541) made of metal to house the other element of the door, where the element ( 141, 341, 541) housing is designed in such a way that the housing element (141, 341, 541) engages with the other element of the door in the event of fire, characterized in that a force ( F) of traction in such a way that the housing element (141, 341, 541) moves from a normal position to a position ex stretched out.

Description

DESCRIPTION

Fire door leaf for a single or multi-leaf fire door

The invention relates to a fire door leaf, in particular of supporting wrap-around sheets with a filler for a single-leaf or multi-leaf fire door.

For example, in DE 19649443 B4 a multi-leaf fire door is disclosed. This form refers to a fire door with a first door leaf and a second door leaf, the enveloping sheets of the door sheets being a lining sheet and an insert sheet. A movable leaf has a lock with a ratchet that can be hooked to a counter bearing on the fixed leaf. Hereinafter, unlike the fronts on the hinge side, the fronts with the lock or the counter support will be designated as fronts on the lock side. On these fronts on the lock side, both door leaves of DE 19649443 B4 have a U-shaped profile design and on the opposite side, a stepped recess. The U-shaped profile design lodges in the stepped indentation of the other door leaf when the door is closed. For its part, the other door leaf has in its stepped groove a gasket that rests on the metal sheet of a foaming material for fires that serves to fill the gap in the door between both leaves of the fire door with foam in case of a fire. These gaskets are clearly glued to the metal sheets and fulfill a mere insulating function.

In DE 41 36 155 A1 a passage door with a door leaf and a frame is disclosed. For example, the passage door is a component of a sliding fire door and must also serve as an emergency door, so it must be designed without a passage door threshold.

US 4937978 A describes a construction of a metal door having two metal panels. The panels create folded sections that extend in parallel and can come into contact with each other at a joint zone. The metal door construction is used in fire doors.

DE 202011 004674 U1 shows a fire door with at least one door leaf and a frame. The door leaf has arranged on a side surface a door fold comprising closing elements. The closure elements can be inserted into recesses, such as the frame, partially in positive connection.

Document AT 403498 describes a fire door fixing device with at least one door leaf. The fixing device comprises a fixing element that fixes the door leaves to each other and in the initial state is closed with the front of one of the door leaves. The fixing element is inserted into a guide essentially at the level of the door leaf that serves as a housing. The fixing element is pushed by an elastic element towards the other door leaf with a certain force. The fastener in the initial state is protected by a material that melts above a predetermined limit temperature. Thus, in the event of fire, the fixing device dissolves safely and reliably and guarantees a secure fixing in the event that the fixing element is a sliding bolt whose surface is provided with a structure in the shape of saw teeth, which increases the retention effect. Advantageously, a certain area of the recess of the second door leaf that serves for the interaction with the bolts will have a structure similar to the structure of the surface.

Document EP 2395 192 A1 describes a fire door leaf according to the preamble of claim 1.

The constructions of the fire doors must be duly authorized from a technical point of view. To do this, fire door manufacturers must submit each new design to fire exposure tests that demonstrate fire protection properties. For this, fire doors are installed with the door frame and leaves on a test wall and in a test oven to heat them on one side for the prescribed protection period. For example, a T30 class fire door must last for at least 30 minutes. If during the fire test it burns with flames or if the fire door becomes unacceptably high on the side opposite the fire, then the fire test will not pass. They are only authorized when it is verified that they have passed the fire exposure test.

In the case of fire doors whose leaves are made of enveloping sheets with filling, in these fire exposure tests the so-called "bimetallic effect" is produced. The enveloping sheet subjected to fire expands more than the sheet on the opposite side to the fire due to the high temperatures. Because of the difference in thermal expansion, the entire leaf of the door leaf is put under considerable stress and deforms accordingly. The fire door must absorb these bending forces. The bending cannot be so great that it creates unacceptably large gaps through which hot gases could enter. The resulting forces are very great.

Each door leaf is held on the one hand by the door hinges and on the other only by the ratchet. In this regard, it must be borne in mind that fire doors must pass the fire test also in the unlocked state, held merely by the ratchet.

This is a technical challenge for single leaf doors. In the case of multi-leaf doors, for example with a fixed leaf and a mobile leaf, in general the problems are even greater. In this case, the two leaves of the fire door are only held on their hinge side by means of the hinges. The fixed sash can still be fastened with vertical interlocking elements on the top rail of the frame and / or on the ground; the movable blade, which is often wider, only rests on the counter support of the fixed blade by means of the ratchet.

To achieve a safe construction for protection against fire, the large bending forces that occur in the event of fire can be assimilated, for example, by bolts, hooks or similar objects that provide several points of support for the sheet of metal. the fire door. These are designed in such a way as to allow initial deformation of the fire door leaf (s) to reduce the load on the frame and the latch. However, with this initial deformation there is a risk that gaps will appear between the fire door leaves or between the fire door leaf and the frame, so that smoke or combustion gases can enter from the fire side.

The object of the invention is to provide an improved fire door leaf that better withstands the deformation forces that appear in the event of a fire.

This objective is fulfilled with a fire door leaf according to the main claim. Preferred variants of the fire door leaf are the subject of the subclaims. A multi-leaf fire door with a fire door leaf according to the present invention is the subject of the independent claim. According to a first aspect, the present invention provides a fire door leaf for a fire door, where the fire door leaf has at least one wrapping sheet and a filling, where a hooking device arranged on the wrapping sheet always grips another element of the door of the fire door when the fire door is in a closed state, where the latching device has a housing element made of metal to house the other element of the door, where the housing element is designed in such a way that, in In the event of fire, the housing element engages the other door element and, by means of the catch, exerts a pulling force that moves the housing element from a normal position to an extended position.

In the closed state, the fire door leaf engages with the hooking device another door element, such as another fire door leaf, for example. The receiving element comprises, for example, a shoulder or an opening of the other element of the door. In the event of a fire, the moment the fire door leaf begins to deform, the housing element engages with the other door element. The catch exerts a pulling force caused by the bending forces on the housing element. As the tensile forces increase, the housing member leaves its normal position. This avoids excessive tensile stresses and allows a certain deflection of the door leaf towards the other door element. With this, materials such as, for example, fire-retardant foams or cooling materials, can expand inside the sheet and fulfill their role.

Preferably the cracking areas of the housing member will be covered. In this way, the combustion gases from the fire area will not be able to pass between the fire door leaf and the other door element.

It is preferable that the hooking device extends along the entire height of the fire door leaf.

Preferably the fire door leaf will comprise a metal backing plate to hold the latch in the normal position.

The counter effect to the bending forces can be improved with the measures mentioned above. In particular, the metal reinforcing plate gives the coupling device great stability and rigidity in order to better counteract tensile forces. Thus, better fire performance and a better insulating effect can be achieved.

It is preferable that the receiving element has a receiving section for gripping the other door element and a fixing section inserted in a guide device.

It is preferable that the guiding device has a groove into which the fixing section is inserted, particularly in pressure connection.

It is preferable that the housing element fits the guide device in such a way that the housing element is clamped in the guide device even in the extended position.

It is preferable that the receiving section and the fixing section are arranged essentially orthogonal to each other.

It is preferable that the guide device has a hollow chamber formed by the covering plate.

It is preferable that the guide device has a hollow chamber delimited by the profile of the hollow chamber and adjacent to the groove.

In the event of fire, the guiding device facilitates a controlled movement of the housing element.

In a normal situation, the snap connection in the guide device facilitates assembly, secures the housing element sufficiently against any accidental movement (for example, when the fire door leaf falls into the lock) while allowing the necessary movement in case of fire.

The adaptation of the housing element can prevent the housing element from detaching from the guiding device. This is especially relevant when the fire door leaf is deformed more than usual. A right-angle arrangement of the housing element can provide an insulating effect and optimal engagement at the same time.

If the guiding device is formed of a wrapping sheet, the manufacture of the fire door leaf will present a lower manufacturing cost.

The hollow space delimited by the profile of the hollow chamber preferably serves not to house the housing element, but to allow some freedom of movement of the housing element perpendicular to the plane of the fire door leaf. This can prevent tilting or clogging of the housing member during movement from the normal position to the extended position without compromising the insulating effect too much. Preferably, the fire door leaf will comprise a movement limiting device to limit the movement of the housing element.

It is preferable that the movement limiting device has a first delimiting section arranged in the housing element and adjacent to its fixing section and a second delimiting section, particularly shaped from the wrapping plate.

It is preferable that the first delimiting section is arranged essentially orthogonal to the fixing section and essentially parallel to the housing section, particularly in the same direction as the housing section.

It is preferable that the movement limiting device forms part of the guiding device, the movement limiting device being arranged particularly adjacent to the profile of the hollow chamber.

The movement limiting device facilitates control over the movement of the fastener.

Advantageously, the movement limiting device, similar to the guiding device, will be an integral part of the wrapping plate, which reduces manufacturing costs.

The movement limiting device also makes it possible to define an extended position that cannot be exceeded by the housing element. Thus, the movement of the housing element can be stopped before the insulating effect is reduced too much.

According to another aspect, the present invention provides a multi-leaf fire door having a first fire door leaf rotating about a first vertical axis corresponding to one of the configurations described above, and a second fire door leaf rotating around a second vertical axis, which has at least one wrapping sheet and a filling, in which the two leaves of the fire door touch when they are closed, in which the hooking device grips or hooks the at least one wrapping sheet of the second leaf of the fire door in the closed state.

The multi-leaf fire door realizes the advantages of the fire door leaf in whole or in part in a multi-leaf fire door. In particular, with the multi-leaf fire door, it is considerably advantageous that the resulting bending forces are relieved in a controlled manner thanks to a preferably limited movement of a coupling element and, nevertheless, a secure coupling of both leaves is ensured. .

Examples of embodiments of the invention are described in greater detail below with reference to the drawings. Shown in:

Figure 1, a schematic view of a multi-leaf fire door with an embodiment of a fire door leaf;

Figure 2, a section along the line AA in Figure 1;

Figure 3, an enlarged view of the insert plate of the first leaf of the fire door of Figure 2;

Figure 4, an enlarged view of the insert plate of the second leaf of the fire door of Figure 2;

Figure 5, another example of embodiment of a fire door leaf;

Figure 6, an enlarged view of the insert plate of the fire door leaf of Figure 5; Figure 7, a series of profiles for the manufacture of the insert plate of Figure 6;

Figure 8, another example of embodiment of a fire door leaf;

Figure 9, an enlarged view of the insert plate of the fire door leaf of Figure 8 and Figure 10, a series of profiles for the manufacture of the insert plate of Figure 9.

According to Figure 1, a multi-leaf fire door 10 comprises a frame 11, a fixed leaf 12 and a movable leaf 13.

The fixed leaf 12 is fixed by means of hinges 16 of the door around a first vertical axis 14 rotatable to the frame 11. The mobile leaf 13 is fixed to the frame 11 by means of hinges 16 of the door around a second vertical axis 15 rotary. In the closed state, the fixed leaf 12 and the movable leaf 13 are joined in an intermediate joining zone 17.

The multi-leaf fire door 10 may also comprise a door sill 18. The fixed leaf 12 may have a locking bolt 19 that locks the fixed leaf 12 on the frame 11 from the top and on the threshold 18 of the door from the bottom.

The fixed leaf 12 has a first leaf 100 of the fire door. The movable leaf has a second leaf 200 of the fire door. The first sheet 100 of the fire door and the second sheet 200 of the fire door are described hereinafter along the lines of Figures 1 to 4.

The first sheet 100 of the fire door has a first sheet metal casing 101, particularly of sheet steel, with a filling 102 inside it.

A first side 110 and a second side 112 are formed in the first casing 101. The first casing 101 comprises a first lining plate 103 and a first insert plate 104. The first side 110 is also called the hinge side 120, and the second side 112 is also called the hinge side 130, however. The first locking plate 104 has the side 120 opposite the hinges, a first front 105 on the side of the hinges and a first front 106 on the side of the lock. The first cover plate 103 has the hinge side 130.

A first metal reinforcing plate 107 may be provided to reinforce the first front 106 on the lock side. The first reinforcing plate 107 can simultaneously act as a counter support plate 108 for a closing element of a door lock, such as, for example, a ratchet 209.

The first latch plate 104 is bent on the non-hinge side 120 to form a shoulder 121 on the non-hinge side. The shoulder 121 on the side opposite the hinges is preferably formed with a double layer of the first plate 104 of the socket. The shoulder 121 on the non-hinge side extends at an angle to the non-hinge side 120 in a direction toward the hinge side 130. The shoulder 121 on the non-hinge side can also extend essentially parallel to the first front 106 on the lock side.

Next, the first latch plate 104 extends in the direction towards the first hinge-side front 105 so that a double layer is preferably formed. The first lock plate 104 is then folded back and continues at a distance to the double layer. In this way, a profile 124 of the hollow chamber is formed. The hollow chamber profile 124 is essentially U-shaped and open to the first front 106 on the lock side.

The first latch plate 104 then extends from the non-hinge side 120 toward the hinge side 130 thus forming the first lock-side front 106. A return 131 on the hinge side abuts the first front 106 on the lock side.

The return 131 on the hinge side is designed as a first female profile 132. The first female profile 132 is preferably essentially U-shaped.

The first female profile 132 comprises a first protrusion 133 which forms a first female flank 134 and essentially protrudes parallel to the first front 106 on the lock side in a direction towards the side 130 of the hinges, a first female base 135 extending essentially parallel to the first side 110, as well as a first fold 136 to which the first cladding plate 103 and the first insert plate 104 are hooked.

On the side 120 opposite the hinges, a guide device 150 is provided. Guiding device 150 comprises a slot 151 and a hollow chamber 152 adjacent thereto. The hollow chamber 152 is delimited by the profile 124 of the hollow chamber.

On the side 120 opposite the hinges, a hooking device 140 is provided. The hooking device 140 comprises a housing element 141. The housing element 141 has a housing section 142 and a fixing section 143. Fixing section 143 is inserted through slot 151 into hollow chamber 152. The housing element 141 is arranged in such a way that it can be hooked to a cavity, a return or the like of another leaf of the fire door.

Furthermore, the first leaf 100 of the fire door comprises a movement limiting device 160 that limits the movement of the housing element 141. The movement delimiting device 160 has a first delimiting section 161 and a second delimiting section 162. In the first leaf 100 of the fire door the first delimiting section 161 is arranged in the housing section 142. The second delimiting section 162 is arranged on the shoulder 121 on the side opposite the hinges.

The second sheet 200 of the fire door shows a similar design to that of the first sheet 100 of the fire door. The second leaf 200 of the fire door has a second casing 201 made of sheet metal, particularly sheet steel, with a filling 202 inside it.

The second casing 201 also has the first lateral 110 and the second lateral 112. The second casing 201 comprises a second covering plate 203 and a second insert plate 204. The second locking plate 204 has the side 120 opposite the hinges, a second front 205 on the side of the hinges and a second front 206 on the side of the lock. The second cover plate 203 has the hinge side 130.

The second latch 204 comprises a second front 205 on the hinge side and a second front 206 on the side of the lock. The second front 206 may be provided with a second plate 207 of metal reinforcement. The second leaf 200 of the fire door comprises a standard lock 208, which has a pawl 209. The pawl 209 holds the second leaf 200 of the fire door, for example, on the counter plate 108 of the first leaf 100 of the door. firewall.

The second leaf 200 of the fire door comprises a shoulder 220 on the side opposite the hinges. The shoulder 220 on the non-hinge side is preferably designed as a second essentially U-shaped female profile 221.

The second female profile 221 has a second female flank 222 formed from the second engagement plate 204 and preferably extending at an angle of 45 ° towards the side 120 opposite the hinges. Adjacent to the second female flank 222 is a second female base 223, which extends essentially parallel to the side 120 opposite the hinges. Adjacent thereto is a second protrusion 224 which protrudes essentially parallel to the second front 206 on the lock side in a direction toward the side 120 opposite the hinges. The second lock-side front 206 extends essentially perpendicular to the sides 110, 112 from the non-hinge side 120 to the hinge side 130.

The second leaf 200 of the fire door further comprises a female profile 231 on the hinge side. The female profile 231 on the hinge side is preferably designed essentially in a U-shape, facing the opening on the side 120 opposite the hinges.

The hinge-side female profile 231 comprises a hinge-side female flank 232, a hinge-side female base 233, and a hinge-side fold 234.

A section of the second insert plate 204 forms the female hinge side flank 232, which passes through the female base 233 on the hinge side and ultimately forms the fold 234 on the hinge side. Hinge-side female base 233 extends essentially parallel to hinge side 130. The hinge-side fold 234 forms a shoulder projecting from the hinge side 130 to the non-hinge side 120.

The second female profile 221 and the female profile 231 on the hinge side are examples of other elements of the door that can be hooked to the latch 140.

As can be seen in Figure 2, when the multi-leaf fire door 10 is closed, the housing element 141 engages the second female profile 221. When, in the event of a fire, both sheets 100, 200 of the fire door begin to deform, the housing section 142 and the second protrusion 224 can catch. In this way, a pulling force F is generated which is directed from the first front 106 on the lock side to the second front 205 on the hinge side and is exerted on the receiving element 141. The housing element 141 thus moves essentially parallel to the first side 110, more specifically on the side 120 opposite the hinges. This controlled movement reduces the bending forces exerted on the leaves 100, 200 of the fire door.

The movement limiting device 160 prevents the housing element 141 from separating from the first sheet 100 of the fire door. Housing member 141 is movable within a zone 122 of motion defined by motion limiting device 160. When the housing member 141 has been sufficiently extended by the effect of the tensile force F, the first delimiting section 161 collides with the second delimiting section 162. The side facing the first face 106 on the first shoulder 121 thus constitutes a stop section 123 for the housing element 141. Bending forces are then dissipated, for example, through the first shoulder 121 and the side 120 opposite the hinges. .

If a cracked area appears between the first lock-side front 106 and the second lock-side front 205, the cracked area can be plugged with the housing member 141 moved to an extended position, so that the penetration of smoke and combustion gases through multi-leaf fire door 10.

Figures 5 and 6 describe another embodiment of a first fire door leaf 300.

The first sheet 300 of the fire door comprises a first sheet 301 casing, particularly of sheet steel, with a filler 302 located therein. A first side 310 and a second side 312 are formed in the first casing 301. The first casing 301 comprises a first lining plate 303 and a first insert plate 304. The first side 310 is also called the hinge side 320, and the second side 312 is also called the hinge side 330, however. The first locking plate 304 has the side 330 of the hinges and a first front 306 on the side of the lock.

The first cover plate 303 has the side 320 opposite the hinges.

As in the previous embodiment, a first metal reinforcing plate 307 can be arranged on the first front 306 on the side of the lock. The first metal backing plate 307 may also act as a counter support plate 308. The first insert plate 304 initially forms a bend 321 together with the first cover plate 303. From the bend 321, the first insert plate 304 extends to form a double layer with the first liner plate 303. The first latch plate 304 extends further in the direction of its thickness to the hinge side 330 and further extends parallel to the non-hinge side 320 so as to form a profile 324 of the hollow chamber.

The first locking plate 304 is bent on an edge 325 in the direction of the hinge side 330 and forms the first front 306 on the lock side.

The first lock plate 304 has a hinge-side protrusion 331 on the hinge-side 330. The first return 331 on the hinge side is preferably designed as a first female profile 332. Profile 332 female has a shoulder of 333, a flank 334 female and a base of 335 female. The shoulder 333 extends at an angle relative to the hinge side 330 from the first hinge side 330 in the direction of the first lock side face 306.

The first insert plate 304 comprises a housing 337 for the joint formed by the first shoulder 331 on the side of the hinges. A gasket 338 can be accommodated in seal housing 337.

On the side 320 opposite the hinges, a hooking device 340 is provided. The hooking device 340 comprises a housing element 341 having a housing section 342 and a fixing section 343. The receiving section 341 is shaped like a shoulder 326 that projects through an area close to the edge 325 towards the side 320 opposite the hinges. As in the previous embodiment, the housing section 342 can house another element of the door, such as another shoulder, a return, a female profile or the like.

The fixing section 343 is inserted into a guide device 350. The guide device 350 comprises a slot 351 formed between the first fold 321 on the non-hinge side and a section of the engagement plate 304 on the non-hinge side. The guide device 350 further comprises adjacent to the slot 351 a hollow chamber 352 which is delimited by the profile 324 of the hollow chamber.

In addition, a movement delimiting device 360 is also provided. The movement delimiting device 360 comprises a first delimiting section 361 that extends adjacent the attachment section 343 and toward the non-hinge side 320 in the thickness direction. The movement delimiting device 360 also comprises a second delimiting section 362 that is formed by the bend 321. The first cladding plate 303 forms a stop section 323 housed in the hollow chamber 352. The hollow chamber 352 and stop section 323 define a zone 322 of movement. The housing element 341 can therefore only move within the zone 322 of movement.

In the event of fire, when a pulling force F is exerted on the housing member 341, the shoulder 326 moves in the direction of the pulling force F. Thus, the housing member 341 as a whole moves along the movement zone 322 toward an extended position. The first metal reinforcing plate 307 guarantees a certain rigidity of the front 306 on the lock side, so that the deflection of the receiving element 341 is less than in the previous embodiment with the same tensile force F.

Any possible cracked area that may appear between the first sheet 300 of the fire door and the other element of the door can thus be better covered and its width reduced.

A manufacturing process for the first insert plate 304 is now described in Figure 7.

In a first step, a first section 600 of the hollow section is bent from a sheet, particularly sheet steel. The first section 600 of the hollow profile is bent at an angle of about 90 ° in a first direction D1. In another step, a second section 601 of the hollow profile is bent, which extends essentially perpendicular to the first section 600 of the hollow profile and is also bent in a first direction D1. The second section 601 of the hollow section will be longer than the first section 600 of the hollow section.

In another step, a third section 602 of the hollow profile is formed. The third section 602 of the hollow profile will also bend in the first direction D1, but only at 70 °. The third section 602 of the hollow profile will be that the first section 601 of the hollow profile.

In another step, an edge section 603 is folded away from the side opposite the hinges. The non-hinge side edge section 603 bends in a second direction D2 opposite the first direction D1.

In another step, the third section 602 of the hollow profile is still bent in the first direction D1, so that it is essentially perpendicular to the section 603 on the edge of the side opposite the hinges. The first, second and third sections 600, 601,603 of the hollow profile will thus form the profile 324 of the hollow chamber.

In another step, a section 604 is formed from the front of the lock side. The section 604 of the front of the lock side is formed by the bend in the first direction D1 at about 90 °. The lock-side front section 604 forms the first lock-side front 306 of the first sheet 300 of the fire door. In another step, a double layer section 605 is formed on the hinge side in which the sheet is bent back on itself in the second direction D2. Then, from the hinge-side double-layered section 605, the first hinge-side shoulder 331 will be formed.

The first insert plate 304 thus produced can be engaged with the first cover plate 303. The first casing 301 thus formed is then filled with the filler 302. The latching device 340 can then be arranged on the first front 306 on the lock side and, for example, installed by insertion or with screws. Figures 8 and 9 describe another example of embodiment of a first fire door leaf 500.

The first sheet 500 of the fire door comprises a first sheet casing 501, particularly of sheet steel, with a filling 502 inside it. A first side 510 and a second side 512 are formed in the first shell 501.

The first casing 501 comprises a first lining plate 503 and a first insert plate 504. The first side 510 is also called the hinge side 520, and the second side 512 is also called the hinge side 530, however. The first locking plate 504 has the side 520 opposite the hinges and a first front 506 on the side of the lock. The first cover plate 503 presents the side 530 of the hinges.

As in previous embodiments, the first lock-side front 506 may comprise a first metal backing plate 507. The first metal backing plate 507 may act as a counter support plate 508.

The first liner plate 503 and the first insert plate 504 engage in a bend 521 on the first side 520 opposite the hinges. The first plate 504 of the socket extends adjacent to the fold 521 essentially parallel to the side 520 opposite the hinges in a direction towards the front of the side of the hinges (to the left in Figure 8) of the leaf 500 of the fire door . Then, the first locking plate 504 is bent back on itself so that a profile 524 of the hollow chamber is formed. The hollow chamber profile 524 is essentially U-shaped. The first latch plate 504 extends further to an edge 525 where the first edge plate 504 bends to form the first lock-side front 506 in the direction towards the 530 side of the hinges.

The first insert plate 504 comprises a housing 537 for the joint formed by the first shoulder 531 on the side of the hinges. A seal 338 can be accommodated in the seal housing 537.

Furthermore, a hooking device 540 is provided on the first side 520 opposite the hinges. The latch device 540 comprises a housing element 541 having a housing section 542 for housing another door element, as well as a fixing section 543. The receiving section 541 is shaped like a shoulder 526 that projects through an area near the edge 525 in the direction towards the side 520 opposite the hinges. As in the previous embodiment, the housing section 541 can house another element of the door, such as another shoulder, a return, a female profile or the like.

The fixing section 543 is inserted in a profile 524 of the hollow chamber. The profile 524 of the hollow chamber thus constitutes a guide device 550 comprising a slot 551 and a hollow chamber 552. The slot 551 is formed by a fold 521 and the non-hinge side section of the first insert plate 504. The hollow chamber 552 extends adjacent to the slot 551 and from the slot 551 parallel to the sides 510, 512 in a direction toward the front of the hinge side.

Unlike the previous embodiments, in this case the first leaf 500 of the fire door does not have any movement limiting device. Instead, the housing element 541 is shaped such that the fixing section 543 is always in the guide device 550, even when the housing element 541 is in the extended state. The guide device 550 thus defines a movement area 522 in which the receiving element 541 can move.

In the event of a fire, the housing element can be moved from its normal position to an extended position under the effect of the pulling force F. The first metal backing plate 507 exerts a greater return force on the housing member 541. Next, in the light of Figure 10, a manufacturing process for the first insert plate 504 is described.

In one step, a sheet of metal is bent to obtain a section 612 of the non-hinge side bend. The bending is carried out in a first direction D1.

In another step, the section of the fold on the side opposite the hinges is bent about 90 ° in a second direction D2 opposite to the first direction D1. This forms part of the first fold 521 on the opposite side of the hinges.

In another case, the sheet is bent about 110 ° in the first direction D1 and thus a first section 610 of the hollow profile and a second section 611 of the hollow profile are formed.

In another step, a section 603 of the non-hinge side edge is bent in the second direction D2 to form the first non-hinge side edge 525.

In another step, the first section 610 of the hollow section is bent further, so that it extends parallel to a certain distance from the second section 611 of the hollow section. This forms the profile 524 of the hollow chamber, which will then serve as a guide device 550.

In another step, a section 614 from the front of the lock side is bent in the first direction D1 such that it extends essentially perpendicular to the still unmachined section of the sheet metal.

By bending the sheet over itself a double-layered section 615 is created on the hinge side in another step which serves to form the first hinge-side return 531. The lock-side front section 614 then forms the first lock-side front 506.

According to the present invention, fire door leaves have been provided that withstand a certain deformation in the event of fire and thereby keep cracks that may appear closed so that the penetration of fire and combustion gases through the fire door leaf and the fire door constructed with it. In addition, simple manufacturing procedures are shown for the insert plates applicable to this type of fire door leaves.

List of reference signs

10 Multi-leaf fire door

11 Frame

12 Fixed blade

13 Moving leaf

14 First vertical axis

15 Second vertical axis

16 Door hinge

17 Intermediate junction area

Door threshold

Locking bolt

First sheet of fire door First wrap

Stuffed

First cover plate First insert plate

First Hinge Side Front First Lock Side Front First Metal Backing Plate Counter Support Plate

First lateral

Second winger

Side opposite the hinges

Overhang on the side opposite the hinges Movement zone

Stop section

Hollow Chamber Profile

Hinge side

Hinge side return First female profile

First highlight

First female flank

Female first baseman

First fold

Hitch device

Housing element

Accommodation section

Fixing section

Guiding device

Groove

Hollow chamber

Movement delimiting device First delimiting section Second delimiting section Second sheet of the fire door Second envelope

Stuffed

Second cover plate Second insert plate Second front on hinge side Second front on lock side Second metal reinforcement plate Standard lock

Ratchet

Non-hinge side return Second female profile

Second female flank

Female second base

Second highlight

Hinge-side female profile Hinge-side female flange Hinge-side female base Hinge-side bend First sheet of fire door First wrap

Stuffed

First cover plate First insert plate

First lock side front First metal backing plate Counter support plate

First lateral

Second winger

Side opposite the hinges

Fold

322 Movement zone

323 Stop section

324 Hollow Chamber Profile

325 Song

326 Highlight

330 Hinge side

331 Hinge side return

332 Female profile

333 Highlight

334 Female flank

335 Female base

337 Seal housing

338 Board

340 Coupling device

341 Housing element

342 Accommodation section

343 Fixing section

350 Guiding device

351 Slot

352 Hollow Chamber

360 Motion bounding device

361 First delimiting section

362 Second delimiting section

500 First leaf of the fire door

501 First wrap

502 Filler

503 First veneer plate

504 First insert plate

506 First front of the lock side

507 First metal backing plate

508 Counter Support Plate

510 First lateral

512 Second winger

520 Side opposite the hinges

521 Fold

522 Movement zone

524 Hollow Chamber Profile

525 Song

526 Highlight

530 Hinge side

531 Hinge side return

537 Seal holder

538 Board

540 Coupling device

541 Housing element

542 Accommodation section

543 Fixing section

550 Guiding device

551 Slot

552 Hollow Chamber

600 First section of the hollow profile

601 Second section of the hollow profile

602 Third section of the hollow profile

603 Section of the edge of the side opposite the hinges 604 Section of the front of the side of the lock

605 Double layer section on hinge side 610 First section of hollow profile

611 Second section of the hollow profile

612 Non-hinge side fold section 613 Non-hinge side edge section 614 Lock side front section

615 Double layer section on hinge side D1 First direction

D2 Second address

F Traction force

Claims (10)

1. Fire door leaf (100, 200, 300, 500) for a fire door (10) where the leaf (100, 200, 300, 500) of the fire door has at least one sheet (101,201, 301,501) enveloping and a filling (102), where a hooking device (140, 340, 540) arranged on the enclosing sheet (101,201,301,501) always hooks another element of the door of the fire door (10) when the fire door (10) is in the closed, where the latching device (140, 340, 540) has a housing element (141,341,541) made of metal to house the other element of the door, where the housing element (141, 341, 541) is designed in such a way such that the housing element (141, 341, 541) engages with the other element of the door in the event of fire, characterized in that due to the engagement a traction force (F) is generated in such a way that the element (141,341,541 ) housing moves from a normal position to an extended position to. Leaf (100, 200, 300, 500) of the fire door according to claim 1, characterized in that the housing element (141,341,541) has a housing section (142, 342, 542) to hook the other element of the door and a fixing section (143, 343, 543) inserted in a guide device (150, 350, 550). 3. Leaf (100, 200, 300, 500) of the fire door according to claim 2, characterized in that the guiding device (150, 350, 550) has a slot (151, 351, 551) in which the section is inserted (143, 343, 543) fixation, particularly in pressure connection. 4. Leaf (100, 200, 300, 500) of the fire door according to claim 2 or 3, characterized in that the receiving element (141,341,541) is adapted to the guiding device (150, 350, 550) in such a way that The housing element (141, 341, 541) can also be kept in the extended position in the guide device (150, 350, 550). 5. Sheet (100, 200, 300, 500) of the fire door according to one of Claims 2 to 4, characterized in that the receiving section (142, 342, 542) and the section (143, 343, 543) of fixings are arranged essentially orthogonal to each other. A leaf (100, 200, 300, 500) of the fire door according to one of Claims 1 to 5, characterized by a movement limiting device (160, 360) for limiting the movement of the receiving element (141, 341). 7. Leaf (100, 200, 300, 500) of the fire door according to claim 6, characterized in that the movement delimiting device (160, 360) has a first delimiting section (161,361) arranged on the element (141, 341 ) housing and adjacent to its fixing section (143, 343), and a second delimiting section (162, 362), particularly formed from the wrapping plate (101,301). 8. Leaf (100, 200, 300, 500) of the fire door according to claim 7, characterized in that the first delimiting section (161, 361) is arranged essentially orthogonal to the fixing section (143, 343) and essentially parallel to the housing section (142, 342), particularly in the same direction as the housing section (142, 342). 9. Fire door leaf (100, 200, 300, 500) according to one of Claims 1 to 8, characterized in that the hooking device (140, 340, 540) extends over its entire height. Multi-leaf fire door (10) characterized by a first leaf (100, 300, 500) of the fire door rotating around a first vertical axis (14) according to one of claims 1 to 9 and a second leaf ( 200) of the fire door that rotates around a second vertical axis (15), which has at least one enveloping sheet (201) and a filling (102), where the two leaves (100, 200, 300, 500) of the fire doors are touched when they are closed, where the hooking device (140, 340, 540) grips or hooks the at least one surround sheet (201) of the second leaf (200) of the fire door in the closed state.