EP2617934B1 - Fire door - Google Patents

Description

The present invention relates to a fire door having a door frame and a door leaf as door elements, wherein the door frame defines a door level and the door leaf is pivotally mounted relative to the door frame about a substantially arranged in the door plane geometric pivot axis. In this case, a securing element for locking the door leaf in the door frame in case of fire is present, which is formed on one of the door elements, in particular on the door, in the door rebate along a door edge, in particular a fire door according to the preamble of claim 1. The invention also relates to a retrofit kit for a Fire door according to the preamble of claim 16 and a use of a metal profile as a security element for a fire door according to the preamble of claim 17.

In the event of a fire, high temperatures may occur, resulting in frame profiles of metal fire doors, such as metal sheets. Steel or stainless steel can deform due to the effect of heat. In particular, the frame profiles can deform in this way or a door leaf can bulge in such a way that a gap between door frame and door leaf can no longer be sealed, even if, for example, a foaming building material is used. Not least, the stability of the entire fire door and thus their stability is reduced by this deformation, in the worst case, the door can fall out of the frame. There is therefore a need for fire doors in which a door in the event of fire in the door frame can be fixed or locked.

For fire doors with door fittings, which include the hinges required for the pivoting of the door leaf, It is known to provide punctiform so-called Hinterfang bolt in the door rebate, for example on the door, which pivot when closing the door in accordance with recesses on the door frame. In case of fire, the door is thus locked in the door frame, ie can not bulge out of the frame. However, this solution is only applicable if a pivot axis of the door leaf is offset from a door level to the outside.

In the case of fire doors, which are pivotally mounted by bearing bolts on opposite door edges (e.g., upper and lower edges), i. in which the pivot axis extends substantially in the door, this solution is not feasible. A pivoting of the rear catch strip in a corresponding groove is not possible due to the position of the pivot axis. But just such doors have due to lack of door fittings on door edges, which have no support or anchorage on the door frame over its entire length. In case of fire in this case, the door can be particularly easily pushed out of the door frame at this door edge. It is therefore a need to provide a device which ensures a locking of the door leaf along the free door edges in such doors.

DE 32 39 177 A1 (Dictator Technology Rüf & Co) proposes to provide a closing device which can be activated in case of fire and locks the door in the door frame. The locking is achieved in that a thermally activatable material, which is mounted in the door, actively moves a slidably mounted on the door latch in corresponding recesses of the frame or a counter-profile. The thermally activatable material comprises, for example, an intumescent building material (eg intumescent material), which serves as a propellant for moving the bolt. Such security elements are on the one hand relatively expensive to produce. On the other hand, a possibly failing propellant is needed in an emergency. In addition, it may happen in case of fire due to deformation of the door frame or the frame of the door leaf that the bolt may not be able to engage in the recess and the locking device fails.

Another relevant device is in DE 27 42 665 A1 disclosed.

The object of the present invention is therefore to provide a device of the type mentioned, which avoids the disadvantages of the known. In particular, a simple and reliable device is to be created in which a door can be locked or fixed in case of fire in the door frame and which is inexpensive.

These objects are achieved by the subject-matter of claims 1, 16 and 17. Claim 1 relates to a fire door with a door frame and a door leaf as door elements, wherein the door frame defines a door level and the door leaf is pivotally mounted about a substantially arranged in the door plane geometric pivot axis with respect to the door frame. In this case, a securing element for locking the door leaf in the door frame in case of fire is present, which is formed on one of the door elements, in particular on the door, in the door rebate along a door edge. The invention is characterized in that the securing element is designed and arranged such that the door leaf can be locked in a direction perpendicular to the door plane by the securing element on a counter element of the other door element due to a movement of the door leaf with respect to the door frame, in particular over the full height of the door leaf.

A locking of the door leaf in the door frame here refers to the door leaf and door frame in which the fuse element Door fold no longer provided against each other, in particular in a direction perpendicular to the door plane, can be moved or pivoted. The door elements door frame and door leaves are thus largely firmly connected to each other in the event of fire at the door edge provided with the securing element. In other words, the door can not be pushed out of the door frame.

"Counter element" can in this case a separately provided element such. designate a profile strip or even existing on the door elements anyway elements in the region of the door rebate such. a Falzlappen or other projections and / or grooves or undercuts. "Counter element" thus generally designates elements with which the securing element can cooperate for locking.

In the present case, the "movement of the door leaf in the direction perpendicular to the door plane", which triggers the lock, denotes a predominantly translatory movement (in contrast to the pivoting movement in normal operation). This movement occurs e.g. due to a caused by the action of heat in case of fire curvature of the door leaf. An advantage of the invention is thus that the fire door is designed such that the already occurring (and undesirable in itself) deformation of the door leaf leads to the desired locking in case of fire.

It is understood that the securing element as well as the counter-element are designed and arranged such that the pivoting of the door leaf during normal operation (ie not in case of fire) without restrictions is possible. Due to the arrangement of the pivot axis in the door plane of the door of a novel fire door, if desired, be opened in both directions, ie be swung out on both sides.

As a rule, the pivot axis runs essentially in the door plane, in which the door leaf is also arranged when the door is closed. However, it should be understood that the pivot axis need not be exactly in the door plane, but may be slightly out of the door plane (i.e., substantially in the door plane), as such doors may also have some asymmetry. The (imaginary) pivot axis can run in the area of the door leaf, or in the area of the door frame.

Preferably, the securing element is arranged in a door rebate, in particular as a separate element on a door rebate facing end face of one of the door elements, i. door frame or door leaf. It is understood that the securing element (and / or the counter element) can also be designed as a molded part of the door element integrally formed on a frame of the corresponding door element.

Preferably, the securing element extends over the entire length of the door edge provided with the securing element in order to ensure the most reliable and stable locking possible. It is also conceivable that, as required, a partial training is sufficient, e.g. only in a central area along the door edge.

The door edge provided with the securing element is preferably arranged near the pivot axis. In most cases, a lock with a bolt or a door trap is formed on the opposite door edge remote from the pivot axis, which in case of fire sufficiently locks the door leaf at this door edge. It is understood, however, that a lock or a door latch need not necessarily be present.

An advantage of the inventive fire door is in a passive design of the fuse element. That the lock is released solely due to a deformation of the door leaf under heat. In particular, no special activated in case of fire materials are required as propellant for the functionality of the fuse element. Of course, the security element for sealing the door rebate against flue gas and / or fire passage a Hitezaktivierbares material such. comprise an intumescent material. Advantageously, this may be e.g. be arranged in an outwardly open interior of the fuse element, so that the intumescent material can get into the door rebate, but is protected in the normal state in the interior of the fuse element against mechanical damage.

The securing element is designed and arranged such that it overlaps at least partially when the door is closed in a projection onto the door level with the counter element. The unobstructed pivoting movement of the door leaf can be achieved in such a way that securing element and counter element are spaced apart in the direction perpendicular to the door plane. In this way, in the case of the pivot axis of the inventive fire door, which is arranged essentially in the door plane, the e.g. firmly swing the locking element formed on the door wing on the counter element. In the said translational movement perpendicular to the door plane, however, due to said overlap, e.g. to engage with the counter element and thus to lock.

Preferably, the door leaf is lockable via a positive connection of the securing element with the counter element on the other door element. Conceivable, for example, rear grips, in which, for example, hook-shaped security elements and counter-elements, for example, in the form of angle plates hooked together. Likewise, a design of the securing element and the counter element as a tongue and groove or vice versa are conceivable.

In variants, it is also conceivable to form the securing element and the counter element as largely complementary wedges, which allow the pivoting movement of the door without hindrance. For example, outer wedge surfaces of the securing element can lie within or on a circle concentric with the pivot axis, so that the pivoting movement is not hindered. Due to the overlap mentioned, the wedge surfaces a-wedge can wedge with the counter element in a translational movement of the door perpendicular to the door plane.

Particularly preferably, the securing element for locking the door leaf with the counter element latching for engagement can be brought. With latching engagement here is a double-sided rear handle referred to, so that the door is locked via the securing element in both directions perpendicular to the door plane on the counter element.

For this purpose, the securing element preferably has a latching groove which is open toward the door rebate and extends along the edge of the door, while the counterpart element comprises a latching projection extending substantially parallel to the latching groove. The latching projection can thus be brought into engagement with the latching groove during the translatory movement, so that the door leaf is locked in both directions perpendicular to the door plane with respect to the said translatory movement.

The engagement does not need to take place over the entire length of the door edge, even if securing element and counter element extend over the entire length. Due to the relatively large forces acting in case of fire, the locking projection can be forced only partially into the locking groove, which at best comes to deformations.

It is understood that the locking groove may be formed in different ways and the securing element may in particular comprise additional means which ensure a reliable engagement of the locking projection in the locking groove. In particular, the securing element advantageously has a sliding surface on which, when the door leaf moves in the direction perpendicular to the door plane, the latching projection of the counter element slides into the latching groove. The sliding surface is preferably formed on a side facing the counter element of the securing element. The sliding surface may for example comprise a wedge-shaped ramp on which the locking projection of the counter-element can slide. Preferably, the sliding surface connects directly to the locking groove, so that the locking projection reaches the locking groove when reaching the end of the sliding surface.

With particular advantage, the securing element comprises a metal profile, which is fastened in the door rebate along the door edge on the corresponding door element. Advantageously, the metal profile extends over the entire length of the door edge provided with the securing element. The metal profile is preferably formed in one piece, for example, elements with said sliding surface and / or additional support members may also be integrally formed to ensure a consistent engagement. Preferably, the metal profile is designed as a cold-rolled profile, in particular made of steel or stainless steel. This ensures that even with a longer lasting Fire case the metal profile can not melt and sufficient structural stability and reliable locking exists. In variants, however, it is basically conceivable that other materials are used.

By a one-piece design of the metal profile no possibly failing in case of fire joints are present. In addition, the production as a one-piece profile in comparison to multi-part embodiments is time-saving and cost-effective.

The metal profile is preferably designed as a separate part, with the advantage that it can be attached as a separate part in principle for retrofitting existing fire doors to this. The metal profile may e.g. screwed or welded or otherwise secured to the door element. Of course, the metal profile can also be formed directly on a frame of the corresponding door element or integrally formed therewith.

In this case, a metal profile with a base profile which has a C-shaped profile cross-section that is essentially open towards the door rebate has proven to be particularly advantageous. Such C-profiles have the advantage that a typically flat back of the C-shape can be used as a mounting surface for attachment to the corresponding door element. In addition, the C-shape is open on the opposite side, so that an inner space can form the above-mentioned locking groove of the securing element.

Due to the C-shape, the free arms of the base profile usually have inwardly directed wing extensions (in contrast to profiles called U-profiles). These wing processes have the advantage that the free edges of the fuse element, for example, can catch particularly well with a counter element.

The metal profile is advantageously supported by lateral support elements on the corresponding door element, i. on the door element, on which the metal profile is arranged e.g. is attached. The lateral support members are preferably formed and, e.g. formed on the base profile of the metal profile that a force is derived from the interior of the C-profile forth on the free arms of the C-shape outward, that is. the free arms of the C-profile are supported. The base profile can thus absorb greater forces, which e.g. be exerted by the locking projection of the counter element of the locking groove ago.

The support elements are preferably designed such that they engage the free edges of the C-shape and extend laterally with respect to a longitudinal axis of the base profile, inclined toward the corresponding door element. The support elements may be formed, for example, as angled support strips, which are preferably formed integrally with the base profile. Preferably, the support elements extend over the entire length of the metal profile. However, it is conceivable, for example, also a training as several bridges.

Such laterally extending, to the corresponding door element inclined towards supporting elements also have the advantage that an outer surface of the support elements can provide the above-mentioned sliding surface. The latching projection or the counter-element can slide with appropriate design of the support member on the outer surface and are guided over this to the latching groove.

It is understood that the securing element need not be formed as a metal profile and also need not include a base profile with a C-shaped cross section. In variants, other forms of training with other cross-sections of the base profiles such. U-shape or one-sided locking e.g. an L-shape conceivable. Likewise, in variants and securing elements in the form of hooks or bolts are conceivable, which lock the door pointwise and not on continuous length areas, as is the case with profile strips preferred.

Advantageously, the counter element has a strip which, when the door is closed, extends substantially parallel to the door plane. This bar forms e.g. the above locking projection. In this case, in particular, a folding flap which is often present anyway in the case of relevant fire protection doors can be used. This fulfills a double function in this case, in which he limits the door rebate to the outside as in conventional doors and at the same time acts as a counter element in case of fire. Preferably, the strip is integrally formed with a frame of the corresponding door element (as is usually the case anyway with such folding flap). Especially with cold-rolled steel profiles of the frame structures of the door elements thus results in a good structural stability.

Often it is not readily apparent in fire doors, from which side of the door threatens a fire, for example, in fire doors inside buildings, which separate building area against each other. In such fire doors therefore locking of the door must be ensured in case of fire in both directions. In particular, in the case of doors which can be opened on both sides, it is therefore advantageous if a second, in particular largely identical, counter element is present. Preferably, the counter-elements are arranged in this case with the door closed with respect to the door plane on opposite sides of the fuse element. In this way it can be ensured that, regardless of the direction in which the door leaf is moved in the event of a fire, locking takes place via the securing element. In the above-mentioned double use of Falzlappens may be formed, for example, on both sides of the door rebate such a flap. In variants, two formed as strips counter elements can also be provided by a U-shaped profile strip, which is attached to the corresponding door element.

In the case of two counter-elements, the metal profile preferably has on both sides, preferably also identical, supporting elements as described above. In this way, a stable locking in both directions is equally ensured, in particular, two sliding surfaces may be present.

Particularly preferably, the securing element on the door leaf and the counter-element are formed on the door frame. It is understood, however, that embodiments are conceivable, e.g. when the pivot axis extends in the region of the door frame, wherein the securing element is formed on the door frame.

In a particularly preferred embodiment, the fire door on a finger protection device, which is preferably formed on that door element on which the securing element is formed. The finger protection device is designed and arranged at the door rebate in the region of the door edge, which is provided with the securing element the introduction of a finger is prevented in the door rebate regardless of a pivoting position of the door leaf.

Common finger protection devices ensure that the distance between the door leaf and the door frame is sufficiently small, regardless of the pivoting position, to effectively prevent the insertion of a finger. For example, the standard DIN / EN 18650 states that the distance between the door leaf and the door frame must not exceed 8 mm. However, configurations with gap widths in the range of 3 to 6 mm, in particular 4-5 mm, are also common.

Advantageously, the finger protection device comprises a curved outer surface, which is arranged substantially on a lateral surface of an imaginary, coaxial with the pivot axis circular cylinder. By the curved outer surface of the finger protection device is disposed substantially on said circular cylinder, a distance of the outer surface with respect to the pivot axis is substantially constant. In particular, a distance between the fixed door frame relative to the pivot axis and the outer surface of the finger protection device can thus be kept constant and in particular sufficiently small over a predetermined pivoting range.

By the finger protection device can be arranged on the same door element, as the securing element, the securing element can be integrated into the finger protection device. "Integrated" here denotes a structural design of the finger protection device and the securing element as a functional unit, such that both the securing element and the finger protection device without functional restriction for use and, where appropriate functional synergies can be used.

For example, the finger protection device may comprise a recess provided for receiving the securing element, in which e.g. the metal profile of the fuse element is inserted. In variants, the finger protection device may in principle also itself comprise the securing element, by e.g. the required elements such as e.g. a locking groove or a locking projection is formed directly on the finger protection device. In general, however, a separate embodiment is preferable.

The finger protection device in the present case preferably comprises at least one shell profile, which is made of steel or stainless steel. Advantageously, the shell profile has a part-circular cross-sectional profile. The lateral surface of the shell profile in this case forms the curved outer surface of the finger protection device or at least a part thereof. The finger protection device may e.g. be provided depending on the position of the pivot axis on the door frame or on the door leaf.

As with the security element, the advantage of steel or stainless steel lies in a long service life in case of fire, whereby stainless steel offers additional advantages due to the additional freedom from rust. It is understood, however, that finger protection device basically also made of other materials such. Aluminum or plastic can be made. In this case, the finger protection device would easily melt or burn in case of fire.

Preferably, the finger protection device is designed in several parts, so that it can be mounted in the door frame inserted door. This is particularly advantageous with regard to a retrofit kit for or a repair of existing doors, as they do not need to be dismantled. Preferably, the finger protection device comprises For this purpose, two, in particular substantially identical, shell profiles, which are arranged on both sides of the finger guard provided with the door element such that the outer, curved surfaces of both shell parts lie on the lateral surface of the same imaginary circular cylinder.

By the arrangement with two shell profiles, the attachment of the finger protection device is simplified in that e.g. each one shell part of the finger protection device can be mounted from one side of the door forth. In particular, the finger protection device can thus be mounted in the installed state of the door leaf on this, without the door needs to be lifted out of the hinges. By the curved outer surfaces of both shell parts lie on the same imaginary circular cylinder, also the protection against pinching and crushing is ensured as in a one-piece finger guard. Further, in a finger protection device having two shell parts, a defective shell part can be easily replaced. It is understood that more than two shell parts may be present, in which case the mounting of the finger protection device is usually more complex.

Preferably, the securing element forms part of the finger protection device, in that an outer surface of the securing element lies substantially on the lateral surface of the imaginary coaxial circular cylinder. An outer surface of the securing element advantageously comprises the aforementioned sliding surface, which in any case is preferably accessible from the outside, so that the counter-element can reliably slide on it. In this case, the outer surface of the securing element preferably adjoins the outer surface of the finger protection device largely flush, in particular on the outer surface of the adjacent shell part or the adjacent shell parts.

In this way, the outer surface of the finger protection device is continued or completed by the securing element, so that the securing element, in addition to the locking function in case of fire, also fulfills a function for finger protection in normal operation. Any existing gaps between the securing element and the shell parts of the finger protection device can be replaced by sealing e.g. be closed from rubber.

In alternative embodiments, the securing element may be formed integrally with the finger protection device, in particular in one piece with the shell part or the shell parts. In this way, a simplified construction is achieved by providing parts of the finger protection device also the security element. In this case, the finger protection device or possibly the shell part or the shell parts of the finger protection device for reasons of stability in case of fire with advantage made of steel or stainless steel. For example, two shell parts of the finger protection device arranged on opposite sides, with respect to the door plane, may be formed on the side of the turf, such that a security element designed as a latching groove is provided in the door rebate. For this purpose, the shell parts can each have free edges in the door rebate, which are designed as wing strips directed essentially toward the door plane.

Preferably, the finger protection device substantially completely covers the areas of a frame structure of the finger guard device that are accessible when the door leaf is closed provided door element in the door provided with the finger guard door edge.

In particular, preferably in addition to the frame structure and a glass strip is largely completely covered by the finger protection device. This protects the glass strip against mechanical damage and any joints between the glass strip and the frame profile are completely covered. For this purpose, the finger protection device, optionally its shell part or shell parts, be designed such that it extends at least to the glazing bead on the outer surfaces of the door leaf. An outer surface of the finger protection device can thus largely flush and pass without unnecessary steps or projections in the outer surfaces of the door leaf.

It is understood that with advantage existing fire doors can be subsequently provided with a corresponding fuse element as described herein. The invention therefore also relates to a retrofit kit for a fire door with a door frame and a door as door elements. The retrofit kit comprises a securing element for locking in case of fire of a door leaf in the door frame, wherein the securing element is designed and in the door rebate along a door edge on one of the door elements can be arranged that the door in case of fire due to movement of the door leaf with respect to the door frame in a direction perpendicular to Door level can be locked by the securing element to a counter element of the other door element. Preferably, the securing element is designed and can be arranged such that it overlaps at least partially when the door is closed in a projection onto the door level with the counter element.

Preferably, the securing element of the retrofit kit comprises a preferably one-piece, metal profile, which advantageously comprises a C-shaped base profile, at its two free edges preferably each one with respect to a longitudinal direction of the C-profile laterally extending support element, advantageously in the form of an angled support bar , is trained. Advantageously, the retrofit kit also includes a finger protection device attachable to the door element as described herein. Advantages and other features of the retrofit kit can be directly deduced from the present description of the securing element or the finger protection device in connection with the fire protection door according to the invention. All mentioned in this context features and advantages of the fuse element and / or the finger protection device can be transferred as appropriate to the retrofit kit.

The invention thus also relates to a use of a metal profile, in particular of steel or stainless steel, as a security element in a fire door with a door frame and a door as door elements, wherein the door frame defines a door level and the door leaf about a arranged in the door plane geometric pivot axis with respect to the door frame is pivotally mounted, in particular in a fire door as described herein. The use comprises in this case that the metal profile on one of the door elements, in particular on the door, along a door edge is arranged such that for locking in case of fire of the door leaf in the door frame of the door due to movement of the door leaf in a direction perpendicular to the door plane through the metal profile a counter element of the other door element can be locked.

The advantages and other features of the use of the metal profile are directly apparent from the present description the inventive fire door with a metal profile comprehensive fuse element.

Figur 1

Aussenansicht einer erfindungsgemässen Brandschutztüre mit geschlossenem Türflügel;

Figur 2

Querschnittsansicht der Türe gemäss Fig. 1 im Bereich einer Türkante in einer Ebene senkrecht zur Schwenkachse;

Figur 3

Querschnittsansicht (weitgehend analog Fig. 2) einer weiteren Ausführungsform, bei welcher ein Sicherungelement und ein Gegenelement verkeilen;

Figur 4

Querschnittsansicht (weitgehend analog Fig. 2) einer weiteren Ausführungsform, bei welcher die Schwenkachse im Bereich des Türrahmens angeordnet ist;

Figur 5

Querschnittsansicht (weitgehend analog Fig. 2) einer weiteren Ausführungsform einer erfindungsgemässen Brandschutztüre, bei welcher ein Sicherungselement als Teil einer Fingerschutzvorrichtung ausgebildet ist;

Figur 6

Querschnittsansicht (weitgehend analog Fig. 2) einer weiteren Ausführungsform einer erfindungsgemässen Brandschutztüre, bei welcher ein Sicherungselement als Teil einer Fingerschutzvorrichtung ausgebildet ist.

Further advantages and individual features of the invention are illustrated in the drawings and will be described below. They show schematically:

FIG. 1

Exterior view of a fire door according to the invention with closed door leaf;

FIG. 2

Cross-sectional view of the door according to Fig. 1 in the region of a door edge in a plane perpendicular to the pivot axis;

FIG. 3

Cross-sectional view (largely analogous Fig. 2 ) Another embodiment in which a fuse element and a counter-element wedging;

FIG. 4

Cross-sectional view (largely analogous Fig. 2 ) A further embodiment in which the pivot axis is arranged in the region of the door frame;

FIG. 5

Cross-sectional view (largely analogous Fig. 2 ) A further embodiment of a fire door according to the invention, in which a securing element is formed as part of a finger protection device;

FIG. 6

Cross-sectional view (largely analogous Fig. 2 ) A further embodiment of a fire protection door according to the invention, in which a securing element is formed as part of a finger protection device.

Below corresponding components are provided with the same reference numerals.

FIG. 1 shows an exterior view of an inventive fire door 1 with a door 2 and a door, for example, mounted in a wall opening 3. The door frame 3 is arranged in a subsequently referred to as door level B level. When the door is closed or when the door leaf 2 is closed, it is likewise arranged substantially in the door plane B.

In the present case, the door leaf 2 is pivotally mounted in a bearing in the bottom via a bearing pin 4.1 disposed on an upper edge 2.1 of the door leaf 2 in a bearing on the door frame 3 and via a bearing pin 4.2 arranged on a lower edge 2.2. The bearing pins 4.1 and 4.2 are arranged on lateral, a door rebate 5 between the door leaf 2 and door frame 3 facing surfaces on the upper edge 2.1 and the lower edge 2.2 and extend in a plane of the door leaf 2 substantially parallel to a high edge of the door leaf 2.3 2.3.

Such an arrangement is for the sake of simplicity here and hereinafter referred to as the end-side pivot bearing. This is in contrast to doors with door fittings 7 (indicated by dashed lines), on which hinges are designed for pivoting the door leaf and in which the pivot axis is offset from the door plane B to the outside (not shown). In the frontally mounted door leaf 2, a defined by the bearing pin 4.1 and 4.2 geometric pivot axis A extends within the door leaf 2 (see also Fig. 2 ), especially in the door level B. In doors with door fittings, the pivot axis is usually offset from a plane of the door leaf or the door frame parallel to the outside.

The pivot axis A extends in the present case within a frame 2.5 of the door leaf 2 parallel to and in the region of a door edge 2.3 of the door leaf 2. At an opposite door edge 2.4 a door lock 6 is present with a case 6.1, the bolt engages 6.2 in a closing plate 6.3 in the door frame 3 , At the door edge 2.4 of the door 2 with the door closed 2 at least on the bolt 6.2 on the door frame 3 can be locked.

Along the edge of the door 2.3, no support elements are present in an end-side pivot bearing by design, which hold the door 2 in the door frame 3 - the door 2 is thus free at the door edge 2.3 of the lower edge 2.2 to the O-edge 2.1. In case of fire, the door 2, therefore, especially in the area of the door edge 2.3 particularly easily bulge due to heat and pressure from the door frame 3, which among other things the passage for fire and flue gases is released. In the worst case, the anchoring of the bearing pins 4.1 and 4.2 fail, so that the door 2 can fall out of the door frame 3. For locking in case of fire is therefore in the door rebate 5, in particular in the region of the door edge 2.3 a fuse element 8 (see Fig. 2 ) arranged.

FIG. 2 shows a cross section perpendicular to the pivot axis A through the door frame 3 and the door 2 in the region of the door edge 2.3 (section I - I of Fig. 1 ). The pivot axis A lies substantially in the door level B.

The door rebate 5 is limited in the direction of the plane B of the door 1 door frame side by a front side 3.1 of the door frame 3 and door leaf side of a front side 2.6 of the frame 2.5 and the door leaf 2. In a direction perpendicular to the plane B are in both directions Falzlappen 3.2 in the shape of parallel to the plane B aligned projections on the door frame 3 is formed. The folding tabs 3.2 limit the door rebate 5 in a direction perpendicular to the plane B. The door rebate 5 is largely closed except for a gap between the folding tabs 3.2 and the door leaf 2.

A composite profile 3.3 of the door frame 3 is composed here of two metal profiles, preferably made of steel or stainless steel together, which are held at a distance and between which an insulating material is arranged. Analogously, the frame 2.5 of the door leaf 2 comprises a composite profile 2.7 with two preferably made of steel or stainless steel metal profiles, between which an insulating material is arranged. The pivot axis A extends in the region of the insulating material in the frame 2.5. On a side opposite the front side 2.6, the composite profile 2.7 has a parallel to the plane of the door leaf 2 arranged projection 2.8 and a glass strip 2.9, between which a glass plate is held 2.10 of the door leaf 2.

In the door rebate 5, the securing element 8 is arranged. In the present case, the securing element 8 comprises a C-shaped metal profile 8.1, which is fixedly mounted centrally on the end face 2.6 of the door leaf 2, with the door 1 closed, essentially in the door plane B. Preferably, the profile 8.1 extends substantially over the entire length of the door edge 2.3. The profile 8.1 is preferably made of steel or stainless steel. The profile 8.1 is screwed to the base or on a back of the C-shape with the end face 2.6 of the door leaf 2, in particular with the arranged between the metal profiles insulation material of the composite profile 2.7.

The free edges of the metal section 8.1 are each formed as inwardly directed wing strips 8.2. The wing strips 8.2 are with increasing distance from the metal section 8.1 to each other inclined towards. In a space between the free edges of the wing strips 8.2, a sealing element 8.3 is arranged, which has a door frame 3 toward extending sealing lip. The sealing element 8.3 may be made of rubber, for example, and is preferably inserted into the space between the wing strips 8.2 such that an interior of the metal profile 8.1 is sealed to the door rebate 5. The sealing element 8.3 can have an internal stiffening strip for improved stability. Likewise, a strip 12 of an intumescent material may be arranged in the sealing element 8.3 or in the interior of the profile 8.1, which foams in the door seam 5 in case of fire and seals it.

The securing element 8 opposite can optionally be arranged in the door rebate 5 a counter-profile 9. In the present case, the counter profile 9 is largely identical in design to the securing element 8, but does not fulfill a locking function. The counter-profile 9 is attached to the front side 3.1 of the door frame 3 and serves on the one hand to reduce a volume of the door rebate 5 such that a auszuschäumender in case of fire gap is smaller and does not extend to the front side 3.1 of the door frame 3 out. On the other hand, the counter-profile 9 serves as a holder for a further sealing element 9.1, which is arranged analogously to the sealing element 8.3 of the securing element 8 in the space between wing strips of the counter-profile 9. The sealing element 9.1 acts together with the sealing element 8.3, so that in normal operation the door rebate 5, e.g. is sealed against passage. The sealing element 9.1 may also comprise a strip of an intumescent material.

The free edges of the wing strips 8.2 of the securing element 8 are the elements of the securing element 8 projecting furthest into the door rebate 5 and extending toward the door frame 3. That is, with respect to a mounting surface of the profile 8.1 extend the free edges of the wing strips 8.2 furthest away from this. A longitudinal position of the free edges in the direction of the plane B of the wing strips 8.2 is denoted by F herein. A corresponding longitudinal position of the free ends of the folding tabs 3.2 is denoted by G.

The free ends of the wing strips 8.2 lie on an imaginary circular cylinder C, which is arranged coaxially with the pivot axis A. A radius D of the circular cylinder C is smaller than a distance E between the pivot axis A and a free edge of the folding tabs 3.2. A pivoting of the door leaf 2 about a pivot axis A is thus not hindered by the wing strips 8.2.

On the metal section 8.1 8.2 subsequently outwardly directed support strips 8.4 are each formed in the direction of B or by a longitudinal axis of the profile 8.1 to the wing strips. The support strips 8.4 are inclined with increasing distance from the base profile 8.1 to the front side 2.6, ie towards a mounting surface of the profile 8.1. The support elements 8.4 follow substantially, ie in a straight line approximation, the circular cylinder C. From the base profile 8.1 spaced bend the support strips 8.4 along a crease line, which runs parallel to the longitudinal axis of the profile 8.1, in the direction parallel to B to the end face 2.6 down. The kinked area is thus aligned substantially parallel to the lateral arms of the C-profile 8.1. The kink is chosen such that the outer O-surfaces 8.5 of the support strips are arranged 8.4 in a direction of B closer to the door leaf 2, as the position G of the folding tabs 3.2. The outer surfaces 8.5 of the support strips 8.4 thus form sliding surfaces for the folding tabs 3.2, to which they can slide when the door 2 in the direction perpendicular to B out of the door frame 3 is moved. In the present case, the metal profile 8.1, the wing strips 8.2 and the support strips 8.4 are formed as one piece cold-rolled metal profile.

The support strips 8.4 also support the better stability of the base profile 8.1 whose free arms on the front page 2.6 from. The support strips 8.4 must not rest on the front side 2.6 in the normal state, but can only be pressed against the end face 2.6 in case of fire when a force acts on the base profile 8.1.

How out Fig. 2 it can be seen, the position F of the wing strips 8.2 is closer to the door frame 3 as the position G, which is thus closer to the door leaf 2. In a projection perpendicular to B thus overlap the metal profile 8.1 of the fuse element 8 with the rabbet 3.2 of the door frame 3. If the door 2 is thus moved in a direction H perpendicular to B, the free end of the corresponding folding flap 3.2 reaches the outer surface of the 8.5 facing support bar 8.4. On this slides the folding tabs 3.2 to the free edge of the wing strip 8.4 and finally gets into the space between the wing strips 8.2 when the door 2 is further urged out of the door frame 3 in this direction. In this way, the Falzlappen 3.2 engages in the C-shaped metal profile 8.1: Falzlappen 3.2 and the interior of the profile 8.1 thus provide a latching means in the manner of a latching projection and a locking groove and the door 2 is latched via the securing element 8 acting as a counter element folding tabs 3.2 , In particular, the door leaf 2 is locked in both directions perpendicular to B due to the C-shape.

A particular advantage of the securing element 8 results in combination with a finger protection device 10, which prevents a user of the door 1 gets his fingers into the door rebate 5. According to Fig. 2 is on the door 2 such a finger protection device 10 is formed. The finger protection device 10 comprises two cross-sectionally circular shell-shaped shell profiles 10.1 and 10.2. The shell profiles 10.1 and 10.2 are on the composite section 2.7 of the frame 2.5 on both sides of the door leaf 2, with respect to the plane B largely symmetrical, mounted. The shell profiles 10.1 and 10.2 are arranged such that the imaginary centers of the circle segment shapes coincide with the pivot axis A of the door leaf 2. The outer lateral surfaces 10.3 and 10.4 of the shell profiles 10.1 are 10.2 are arranged on the circular cylinder C. Preferably, the shell profiles 10.1 and 10.2 made of steel or stainless steel, which is particularly advantageous in terms of stability and behavior in case of fire.

The metal profile 8.1 is arranged in a region between the shell parts 10.1 and 10.2. The wing strips 8.2 are oriented (i.e., inclined) such that the outer surfaces of the wing strips 8.2 lie substantially on the same imaginary cylinder C.

Together with the outer surfaces 8.5 of the support strips 8.4, the securing element 8 is thus integrated into the finger protection device 10 such that the securing element 8 also fulfills a function of the finger protection device 10. In particular, an outer surface of the securing element 8 forms part of a largely continuous outer protective surface of the finger protection device 10. The free space not covered by a profile, which is formed by the gap between the wing strips 8.2 of the metal profile 8.1, is closed by the sealing element 8.3 as described above. Other minor gaps between shell parts 10.1 and 10.2 and the securing element 8 are also closed by sealing elements. Overall, this results in a largely continuous outer protective surface on the door leaf 2 in the region of the door edge 2.3, which substantially corresponds to the lateral surface of the said imaginary cylinder C.

The shell parts 10.1 and 10.2 are preferably designed and arranged such that they completely cover the glazing bead 2.9 or the protrusion 2.8 of the frame 2.5. This ensures, on the one hand, that there are no unnecessary gradations and intermediate spaces at the transitions to the outer surfaces of the door leaf 2. The outer protective surface provided by the finger protection device 10 thus adjoins substantially flush with the outer surfaces of the door leaf 2.

On the other hand results in an aesthetically valuable effect, since all structural elements of the door frame 2 and a disc holder are hidden under the finger protection device 10. In particular, an aesthetically largely identical overall impression results from both sides of the door leaf.

With such a finger protection device 10 ensures that in normal operation in the region of the Türfalzes 5 regardless of a pivoting position of the door leaf 2, the outer protective surface is arranged at a constant distance from the door frame 3. In particular, the projections 3.2 can come so close to the protective surface that the insertion of a finger is effectively prevented.

It is understood that in the door rebate 5 for sealing in case of fire against fire and / or flue gas in a known manner additionally a foaming in case of fire building material, such as an intumescent material may be arranged. This can be for example in the shape of the inside of the folding tabs 3.2 arranged strip 11 along the door edge 2.3 in the door rebate 5 extend.

Of course, the shell parts of the finger protection device can also be integrally formed, so that the finger protection shell can be placed, for example, U-shaped from the front side on the respective frame. Optionally, the securing element may be formed integrally with the finger protection device. Finally, the securing element can be formed either on the door frame or on the door leaf, wherein the locking takes place with a counter element of the respective other door element.

FIG. 3 shows a cross-sectional view (largely analogous to the representation of Fig. 2 ) Another embodiment of a fire door 21, in which a securing element 28 and a counter-element wedged 23.2. The fuse element 28 of Fig. 3 is integrally formed with the composite profile 22.7 of a door leaf 22. In particular, hollow profiles of the composite profile 22.7 on a door seam 25 facing end face 22.6 so wedge-shaped to the door plane B towards converging formed that they overlap with largely complementary wedge-shaped hollow profiles of a composite profile 23.3 a door frame 23 in a projection on the door plane B (positions F and G) analogous to Fig. 2 ). The pivot axis A is arranged in the region of the door leaf 22.

The small-shaped hollow profiles of the composite profile 22.7 are designed such that they lie within or on a lateral surface of the coaxial with the pivot axis A imaginary circular cylinder C. The door leaf 22 can thus be pivoted freely about the pivot axis A.

In the case of a translatory movement (arrow H) of the door leaf 22 perpendicular to B, the securing element 28 and the hollow profiles of the composite profile 23.3 acting as a counter element 23.2 wed due to the overlap mentioned. The door leaf 22 is thus locked in the door frame 3. In this embodiment, however, there is no latching of securing element 28 and counter elements in the present case. However, it is understood that even in such embodiments, for example, at most between the hollow sections of the composite profile 22.7 trained gap (not shown) may act as a locking groove, so that acting as a counter element wedge-shaped portions of the hollow sections of the composite profile 23.3 can latch as a locking projection in the locking groove. In this case, however, the wedge-shaped areas would have to be designed in such a way (eg flatter) that the counter element can slide up to the latching groove. In the presentation of the Fig. 3 this is not the case, so that in case of fire wedging takes place.

FIG. 4 shows a cross-sectional view (largely analog Fig. 2 ) Another embodiment of a fire door 41, wherein the pivot axis A in the region of a door frame 43 is arranged. The embodiment of the Fig. 4 corresponds largely to a kinematic reversal of the fire door 1 of Fig. 2 , Folding tabs 43.2 are formed on a door leaf 42, while the securing element 48 is formed in the form of a metal profile 48.1 on the door frame 43. The positions F and G are interchanged insofar as that the position F is arranged closer to the door leaf 42, as the position G. Thus overlaps due to the reverse arrangement, the fuse element 48 acting as counter-elements folding tabs 43.2 in a projection on the door level B. ,

It is understood that in the embodiment of the Fig. 4 also a finger protection device analogous to the finger protection device 10 may be formed (not shown). However, this is attached to the door frame 43. An outer surface of the finger protection device is in this case on the circular cylinder C, which is arranged concentrically with the pivot axis.

FIG. 5 shows a cross-sectional view (largely analog Fig. 2 ) of a further embodiment of an inventive fire door 61, in which a securing element 68 is formed as part of a finger protection device 70. The pivot axis A is disposed within a door leaf 62, in particular in the door plane B.

The finger protection device 70 comprises two shell parts 70.1 and 70.2, which are mounted on a composite profile 62.7 of the door leaf frame 62.5 on both sides of the door leaf 62, with respect to the door plane B largely symmetrical. For this purpose, a respective snap bar 63.4 is arranged on the composite profile 62.7, to which the shell parts are snapped 70.1 and 70.2 (analogous to the arrangement according to Fig. 2 ). It is understood that to improve the stability, the shell parts 70.1 and 70.2 instead or in addition in another way, for example via a screw (see, for example Fig. 6 ), can be attached to the composite profile 62.7.

The outer lateral surfaces 70.3 and 70.4 of the shell profiles 70.1 and 70.2 extend on the imaginary circular cylinder C, which is arranged coaxially with the pivot axis A. The shell profiles 70.1 and 70.2 extend along the circular cylinder C on the composite profile 62.7 out in a door rebate 65 between door leaf 62 and door frame 63. The door frame 63 is like the door frame 3 of Fig. 2 formed and has two analog Falzlappen 63.2, which the door rebate 65 perpendicular to B in both directions limit. Likewise, a counter-profile 69 is attached to the door frame 63 in the door rebate 65.

Free edges of the shell profiles 70.1 and 70.2 projecting into the door rebate 65 form wing strips 68.2 of the security element 68 of the fire door 61. The wing strips 68.2 are arranged symmetrically and spaced from one another with respect to the door plane B, so that a free space for the composite profile 62.7 results between the wing strips 68.2. The wing strips 68.2 extend so far into the door rebate 65 that they overlap in a projection perpendicular to B with the folding tab 63.2 of the door frame 63. The wing strips 68.2 are preferably folded over and double-walled, resulting in increased strength.

Areas of the lateral surfaces 70.3 and 70.4 at the free edges of the shell parts 70.1 and 70.2 form sliding surfaces 68.5 for sliding the Falzlappen 63.2 when the door 62 is deflected in case of fire. The sliding surfaces 68.5 correspond functionally to the sliding surfaces 8.5 of the securing element 8 according to Fig. 2 , Between the wing strips 68.2 a sealing element 68.3 is arranged, which is provided with a fire protection strip 12 of an intumescent material.

FIG. 6 shows a cross-sectional view (largely analog Fig. 2 ) of a further embodiment of an inventive fire door 81, in which a securing element 88 is formed as part of a finger protection device 90. The finger protection device 90 largely analogous to the finger protection device 70 of Fig. 5 two shell parts 90.1 and 90.2 on. In contrast to the embodiment of Fig. 5 The sections of the shell parts 90.1 and 90.2, which extend beyond a composite profile 82.7 of the door leaf 82 into a door rebate 85 the fire door 81 extend, each having a mounting groove 88.6. Through a groove bottom of the fastening groove 88.6, the shell parts 90.1 and 90.2 are fastened from the door rebate 85 with an end face 82.6 of the composite profile 82.7 via a screw connection 82.5. The attachment groove 88.6 is preferably formed in a double-walled region of the shell parts 90.1 and 90.2, which results in an increased strength in the attachment area.

Following the fastening grooves 88.6, wing strips 88.2 of the securing element 88 extend inwardly along the circular cylinder C towards the door plane B and terminate analogously to the fire door 61 of FIG Fig. 5 at free, spaced edges. The talzalzseitigen outer surfaces of the wing strips 88.2 provide sliding surfaces 88.5 for rabbet 83.2 of the door frame 83 ready.

The embodiments of the FIGS. 5 and 6 show thus structurally particularly easy to implement variants of the invention fire doors with a finger protection device.

Claims (17)

1. Fire door (1) comprising a door frame (3) and a door leaf (2) as door elements, wherein the door frame (3) defines a door plane (B) and the door leaf (2) is mounted such that it can pivot with respect to the door frame (3) about a geometric pivot axis (A) which is arranged substantially in the door plane, wherein a securing element (8) for locking the door leaf (2) in the door frame (3) in the event of a fire is provided, which securing element (8) is formed on one of the door elements, in particular on the door leaf (2), in a door fold (5) along a door edge (2.3), wherein
   the securing element (8) is formed and arranged in such a way that the door leaf (2) can be locked to a mating element (3.2) of the other door element by the securing element (8) on account of a movement of the door leaf (2) with respect to the door frame (3) in a direction perpendicular to the door plane (B), characterized in that the securing element (8) is formed and arranged in such a way that it at least partially overlaps with the mating element (3.2) in a projection onto the door plane (B) when the door leaf (2) is closed.
2. Fire door according to Claim 1, characterized in that the door leaf (2) can be locked by means of an interlocking connection of the securing element (8) with the mating element (3.2) on the other door element, in particular the securing element (8) can engage in a latching manner with the mating element (3.2) in order to lock the door leaf.
3. Fire door according to either of Claims 1 and 2, characterized in that the securing element (8) has a latching groove which is open in the direction of the door fold (5) and extends along the door edge (2.3), and the mating element (3.2) comprises a latching projection (3.2) which extends largely parallel to the latching groove.
4. Fire door according to Claim 3, characterized in that the securing element (8) has a sliding surface (8.5) on which the latching projection of the mating element (3.2) slides into the latching groove when the door leaf (2) moves in a direction perpendicular to the door plane (B).
5. Fire door according to one of Claims 1 to 4, characterized in that the securing element (8) comprises a metal profile (8.1) which is preferably composed of steel or stainless steel and which, in the door fold (5) along the door edge (2.3), is fastened to the corresponding door element.
6. Fire door according to Claim 5, characterized in that the metal profile (8.1) comprises a base profile which has a C-shaped profile cross section which is open substantially in the direction of the door fold, wherein the metal profile (8.1) is preferably supported on the corresponding door element by means of lateral supporting elements (8.4).
7. Fire door according to Claims 1 to 6, characterized in that the mating element (3.2) comprises a strip (3.2) which is preferably integrally formed with a frame of the corresponding door element and which extends largely parallel to the door plane (B) when the door is closed.
8. Fire door according to one of Claims 1 to 7, characterized in that a second, in particular largely structurally identical, mating element (3.2) is provided, wherein the mating elements (3.2) are arranged on opposite sides of the securing element (8) with respect to the door plane (B) when the door leaf (2) is closed.
9. Fire door according to one of Claims 1 to 8, characterized in that the securing element (8) is formed on the door leaf (2), and the mating element (3.2) is formed on the door frame (3).
10. Fire door according to one of Claims 1 to 9, characterized in that a finger protection apparatus (10) is provided, which finger protection apparatus is preferably formed on the door element on which the securing element (8) is formed, which finger protection apparatus (10) is formed and is arranged at the door fold (5), in the region of the door edge (2.3) which is provided with the securing element (8) in such a way that prevents a finger being inserted into the door fold (5) irrespective of a pivot position of the door leaf (2), wherein the finger protection apparatus (10) comprises a curved outer surface (10.3, 10.4) which is situated substantially on a casing surface of an imaginary circular cylinder which is coaxial with the pivot axis, wherein the finger protection apparatus (10) advantageously comprises at least one shell profile (10.1, 10.2) which is preferably produced from steel or stainless steel.
11. Fire door according to Claim 10, characterized in that the finger protection apparatus (10) is formed from several parts in such a way that it can be fitted when the door leaf (2) is inserted in the door frame (3), and in that it comprises, in particular, two, preferably substantially physically identical, shell profiles (10.1, 10.2) which are arranged on both sides of that door element which is provided with the finger protection apparatus (10) in such a way that the outer, curved surfaces (10.3, 10.4) of the two shell parts (10.1, 10.2) lie on the casing surface of the same imaginary circular cylinder.
12. Fire door according to either of Claims 10 and 11, characterized in that the securing element (8) forms part of the finger protection apparatus (10) by an outer surface of the securing element, which in particular comprises the sliding surface (8.5), lying substantially on the casing surface of the imaginary coaxial circular cylinder.
13. Fire door according to Claim 12, characterized in that the outer surface of the securing element (8) adjoins the outer surface (10.3, 10.4) of the finger protection apparatus (10), in particular the outer surface (10.3, 10.4) of the adjacent shell part (10.1, 10.2) or the adjacent shell parts, in a largely flush manner.
14. Fire door according to Claims 10 to 13, characterized in that the securing element is integrally formed with the finger protection apparatus, in the case of a shell part or a plurality of shell parts in particular integrally with the shell part or the shell parts.
15. Fire door according to one of Claims 10 to 14, characterized in that the finger protection apparatus (10) substantially completely covers those regions of a frame structure of the door element, which is provided with the finger protection apparatus (10), which are accessible when the door leaf (2) is closed when the door edge (2.3) is provided with the finger protection apparatus (10).
16. Retrofit kit for a fire door (1) comprising a door frame (3) and a door leaf (2) as door elements, wherein the retrofit kit comprises a securing element (8) for locking the door leaf (2) in the door frame in the event of a fire, wherein the securing element (8) is formed and can be arranged on one of the door elements in the door fold (5) along a door edge (2.3) in such a way that the door leaf (2) can be locked to a mating element (3.2) of the other door element by the securing element (8) in the event of a fire on account of a movement of the door leaf (2) with respect to the door frame (3) in a direction perpendicular to the door plane (B), wherein the securing element (8) preferably is formed and can be arranged in such a way that it at least partially overlaps with the mating element (3.2) in a projection onto the door plane (B) when the door leaf (2) is closed.
17. Use of a metal profile (8.1), in particular which is composed of steel or stainless steel, as a securing element in a fire door (1) comprising a door frame (3) and a door leaf (2) as door elements, wherein the door frame (3) defines a door plane (B) and the door leaf (2) is mounted such that it can pivot with respect to the door frame (3) about a geometric pivot axis (A) which is arranged in the door plane (B), in particular in a fire door (1) according to one of Claims 1 to 15, in such a way that
    the metal profile (8.1) is arranged on one of the door elements, in particular on the door leaf (2), along a door edge (2.3) in such a way that, for the purpose of locking the door leaf (2) in the door frame (3) in the event of a fire, the door leaf (2) can be locked to a mating element (3.2) of the other door element by the metal profile (8.1) on account of a movement of the door leaf (2) in a direction perpendicular to the door plane (B), wherein the securing element (8) is formed and arranged in such a way that it at least partially overlaps with the mating element (3.2) in a projection onto the door plane (B) when the door leaf (2) is closed.

Images