Fire protection element
Patent Information
- Application Number
- DE202025103863
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-07-07
- Publication Date
- 2025-08-28
- Estimated Expiration
- 2035-07-31
Smart Images

Figure 00000000_0000_ABST
Abstract
Description
[0001] The present invention relates to a fire protection element for flush-mounted boxes.
[0002] Flush-mounted boxes are used in building installation technology to prepare for the installation of sockets, lamps, switches, or cable branches. During the construction or renovation phase, a flush-mounted connection box or junction box is first installed at the designated locations, where the cables are prepared for later connections. The flush-mounted box has a cavity accessible from the outside of the wall, formed by a base and side walls surrounding the cavity. The cables can be routed into the cavity through designated holes.
[0003] To install flush-mounted boxes, a recess is created in a wall or ceiling that is slightly larger than the flush-mounted box itself. The flush-mounted box is then secured in this recess. Since the flush-mounted box itself is hollow, this recess reduces the thickness of the component in which the flush-mounted box is installed. Due to the reduced component thickness, the fire resistance of the component in the area of the recess is reduced. With typical installation depths of flush-mounted boxes of 40 to 60 mm, the required fire resistance class is often not guaranteed in the area of the recess.
[0004] This is especially critical when the components are designed to be as thin as possible for structural reasons or to save costs. Especially in wooden components, the recesses can pose an increased risk due to the flammability of the wood.
[0005] To address this risk, various solutions have been proposed: For example, flexible fire protection inserts that can be glued into a flush-mounted box are known from DE102010052141 A1.
[0006] In DE102021124092 A1, a more rigid support coated with intumescent material was proposed, which can be arranged parallel to the side walls of the flush-mounted box inside the cavity of the flush-mounted box.
[0007] The disadvantage of these proposals is, on the one hand, the complex installation; on the other hand, and above all, that the area between the flush-mounted box and the surrounding wall is not protected against the effects of fire and the fire can penetrate into the recess.
[0008] The object of the present invention is therefore to provide a fire protection element which can be installed quickly and easily and which reliably protects a component from the effects of a fire, even in the area of a recess required for the installation of a flush-mounted box.
[0009] This object is achieved in a fire protection element for a recess in a component comprising a carrier and a fire protection layer made of an intumescent material arranged on the carrier, in that the carrier consists of a flat carrier plate, wherein at least two tabs are formed for fastening the fire protection element to the component, wherein the tabs are each formed at least partially by a gap arranged in the carrier plate, wherein the tabs each have a tab fastening area and a tab spacer area, wherein the tab fastening area is separated from the rest of the carrier plate by the gap and is connected to the rest of the carrier plate via the tab spacer area.
[0010] With such a fire protection element, the fire resistance of the wall or ceiling can also be achieved in the area of the recess.
[0011] The fire protection element can be attached directly into the recess of the component using the tabs. A flush-mounted box can then be arranged over the fire protection element. In the event of a fire, the heat generated is absorbed by the metal of the carrier and transferred to the fire protection layer. This causes the intumescent material to expand. The tab spacer area is bent outwards by the expansion of the intumescent material and the carrier plate is pushed outwards so that the intumescent material can fill the recess. The tab fastening area remains attached to the component and prevents the fire protection element from falling out, even if the flush-mounted box has melted due to the high temperatures or fallen out of the recess. The intumescent material fills the entire area of the recess and thus protects the component from premature burn-through.In particular, the intumescent material also protects cable ducts and screws located in the area of the recess.
[0012] Advantageous embodiments of the fire protection element according to the invention are described below: In order to achieve a uniform expansion of the intumescent material, the fire protection element preferably has several, in particular two or three, tabs.
[0013] To achieve rapid and uniform expansion of the intumescent material, the carrier can be made of a material with high thermal conductivity. A fire protection element is particularly suitable if the carrier is made of a metal with a melting point of over 1000°C. One simple way to manufacture the fire protection element is, for example, to cut the carrier plate from a metal sheet. The metal sheet can, for example, have a thickness of at least 0.3 mm, in particular 0.3 mm to 1 mm.
[0014] The fire protection element preferably has a round or rectangular basic shape, as this is particularly suitable for a wide range of installation situations. Round recesses are common for switches and sockets, for example, while rectangular recesses are usually provided for distribution boards.
[0015] A round or circular basic shape means that the outer edges are largely at a uniform distance from the center of the beam. In this case, the gap can advantageously run at least partially parallel to the outer edges in a circular arc.
[0016] The fire protection element is particularly easy to install and cost-effective to manufacture if the carrier plate is flat. The fire protection layer can be arranged flat on the carrier and preferably flush with the basic shape of the carrier plate on the outside, so that the outer edges of the carrier plate, with the exception of optionally available mounting elements and / or retaining tabs, and the outer edges of the fire protection layer lie in one plane. The length of the retaining tabs corresponds at least to the radius of the fire protection element, in particular to the sum of the thickness and the radius of the fire protection element. The retaining tabs can be folded inwards so that they reach up to and clamp an installation hose pulled through the cable duct. The fire protection element is then already held in place by the retaining tabs, and installation is made easier even in cases where the installation hose protrudes beyond the recess.
[0017] The fire protection layer preferably consists of a three-dimensional intumescent material. The fire protection layer can typically have a layer thickness of at least 1.5 mm, preferably 1.5 mm to 10 mm. To achieve even better fire protection, the fire protection element can have multiple fire protection layers, preferably arranged one above the other.
[0018] The thickness of the fire protection element is preferably 1.8 mm to 12 mm, so that the depth of the recess is only slightly reduced during installation. A fire protection element that is particularly suitable for recesses for the installation of flush-mounted boxes can have a width or diameter of 60 mm to 200 mm.
[0019] To secure the fire protection element, a mounting hole can be provided in the tab mounting area. In this case, the tab mounting area extends from the loose end of the tab to the edge of the mounting hole that is further away from the loose end of the tab. The fire protection element can be screwed to the component through the mounting hole with a screw.
[0020] To ensure that the fire protection element is held in place in the component during installation, the carrier plate can have mounting elements facing outwards. The mounting elements extend laterally beyond the basic shape of the carrier plate, i.e., away from the center of the support. The mounting elements are preferably located near the tabs. The gap creates a slight spring effect in the area of the tabs, which allows the carrier plate to be compressed and inserted into the component, where it relaxes again and is thus held in place.
[0021] Additionally or instead, the fire protection element can be clamped to a grooved installation hose using retaining tabs during installation.
[0022] The installation of the fire protection element is particularly simple if the carrier plate is limited laterally by outer edges, whereby the tabs are formed by partial sections of the outer edges and the gap, whereby the gap opens into the outer edge of the carrier.
[0023] The tabs are particularly stable and flexible if the gap in a mouth area is designed to run perpendicular to the outer edge.
[0024] Even if the gap in the tab distance area is at least partially parallel to the outer edge, the tabs are particularly stable and flexible.
[0025] To achieve uniform expansion of the fire protection layer, it is advantageous if a first predetermined bending point is formed between the tab spacer area and the rest of the support plate, and if a second predetermined bending point is formed at the end of the tab fastening area located away from the loose end of the tab. The tab is particularly flexible if the first predetermined bending point and / or the second predetermined bending point are aligned perpendicular to the outer edge.
[0026] If the tab is bent outwards along this predetermined bending point by the intumescent material, the intumescent material can fill the recess required for a standard flush-mounted box.
[0027] The tab spacing area thus ends at the first predetermined bending point, which connects two ends of the gap located inside the carrier plate, or which is oriented perpendicular to the outer edge and runs to an end of the gap located inside the carrier plate or a corner of the gap located inside the carrier plate. The tab fastening area thus ends at the second predetermined bending point, which runs perpendicular to the outer edge and ends at the end of the fastening element remote from the loose end.
[0028] The tabs preferably have a length of 38 to 68 mm. The length of the tab corresponds to the distance between the loose end of the tab and the end of the tab spacing area located remote from the loose end, i.e., in particular, the distance from the loose end of the tab to the first predetermined bending point.
[0029] The tab spacer area preferably has a length of 34 mm to 60 mm. The tab spacer area begins at the end of the tab fastening area. The length of the tab spacer area therefore corresponds in particular to the distance between the first predetermined bending point and the second predetermined bending point.
[0030] To ensure that the carrier plate is displaced parallel to its central axis by the expansion of the fire protection layer, the tab spacer region can have at least two mutually parallel tab spacer region sections separated by the gap. In this case, the tab fastening region and the first predetermined bending point between the tab spacer region and the rest of the carrier plate can lie on a common straight line through the center of the carrier plate. This is particularly advantageous for rectangular basic shapes of the carrier plate or for rectangular recesses, since the parallel displacement can prevent the corners of the carrier plate from jamming in the recess.
[0031] Alternatively, the connection of the tab spacer region to the rest of the carrier plate can be arranged away from the tab fastening region. In this case, in particular, an extension of the first predetermined bending point through the center of the carrier and an extension of the second predetermined bending point through the center of the carrier enclose an angle of 45° to 170°, preferably an angle of 65° to 95°. As the intumescent material expands, the tab spacer region is bent outward, and the connecting region between the tab spacer region and the rest of the carrier plate is pulled toward the tab fastening region. This causes the carrier plate to rotate relative to the recess.
[0032] By rotating the support plate along its central axis, it is possible to avoid openings in the support plate directly above screws or cable ducts in the area of the recess. For this purpose, the support can be designed to have a substantially circular basic shape, with the gap forming the tab spacing area extending in the same direction from the respective tab fastening area for all tabs. Thus, starting from the tab fastening area, the gap runs either clockwise for all tabs or counterclockwise for all tabs. This allows the support plate to rotate as the intumescent material of the fire protection layer expands.
[0033] To enable easy installation of the fire protection element in recesses in which cables are prepared for installation, at least one carrier cable entry can be formed in the carrier plate. The cable can then be pulled through the cable entry. In this way, the cable outlet is also protected in the event of a fire. To offer even better protection, it can be provided, in particular, that the at least one carrier cable entry is offset from the center of the carrier. This is particularly advantageous for a carrier plate with a round basic shape, where expansion of the intumescent material leads to twisting, as in this case the cable outlet is even better covered.
[0034] In order to be able to install common cables quickly and easily, the support cable entry can have a diameter of 15 mm to 30 mm, preferably a diameter of 26 mm.
[0035] To facilitate easy installation of the fire protection element, a protective layer cable entry can be arranged in the fire protection layer, with the protective layer cable entry and the carrier cable entry sharing a common center point. To provide particularly effective fire protection for the area of the carrier cable entry, the protective layer cable entry can have a smaller cross-sectional area, in particular a smaller radius, than the carrier cable entry.
[0036] Even more effective protection of the area of the carrier cable entry and a cable outlet of the component located behind it can be achieved if a sealing layer is arranged at least partially between the carrier plate and the fire protection layer, in particular at least in the area of the carrier cable entry and the fire protection cable entry. The sealing layer preferably has a thickness of 0.5 mm to 1 mm.
[0037] In order to protect the cable feedthrough particularly effectively, the sealing layer can have a sealing layer cable feedthrough, wherein the sealing layer cable feedthrough and the carrier cable feedthrough have a common center point and the sealing layer cable feedthrough has a smaller cross-sectional area, in particular a smaller radius, than the carrier cable feedthrough, wherein it is preferably provided that the sealing layer cable feedthrough has a smaller cross-sectional area, in particular a smaller radius, than the protective layer cable feedthrough.
[0038] In order to create a durable connection between the carrier, the fire protection layer and, if applicable, the sealing layer, the carrier plate and / or the fire protection layer and / or the sealing layer can be glued together.
[0039] To protect recesses in building components that are at risk of fire from both sides, the fire protection element can have a carrier plate on both sides, particularly on the top and bottom of the fire protection element. Such a fire protection element can also be used in openings through building components to achieve the required fire protection.
[0040] To provide particularly effective protection for a cable outlet, a fire protection element in which the carrier plate, the fire protection layer, and especially the sealing layer each have a cable duct can have a sleeve arranged on the side of the fire protection element facing away from the carrier plate, with the cable duct and the sleeve sharing a common central axis. Particularly good fire protection in the area of the cable outlet can be achieved if the sleeve is formed from the fire protection layer and / or the sealing layer.
[0041] The invention is schematically illustrated below with reference to particularly advantageous, but not restrictive, embodiments in the drawings and is described by way of example with reference to the drawings: Fig. 1 shows a first embodiment of the fire protection element in plan view. Fig. 2 shows a second embodiment of the fire protection element in plan view. Fig. 3 shows a third embodiment of the fire protection element in plan view. Fig. 4 shows a fourth embodiment of the fire protection element in plan view. Fig. 5 shows a fifth embodiment of the fire protection element in plan view. Fig. 6 shows a sixth embodiment of the fire protection element in plan view. Fig. 7a shows the embodiment of Fig. 1 in installed condition. Fig. 7b shows the fire protection element from Fig. 7a in top view. Fig. 8a shows the arrangement of Fig. 7a in case of a fire. Fig. 8b shows the fire protection element from Fig. 8a in top view. Fig. 9a shows the arrangement of Fig. 7a and Fig. 8a for longer fire duration. Fig. 9b shows the fire protection element from Fig. 9a in top view. Fig. 10a shows the embodiment of Fig. 2 in installed condition. Fig. 10b shows the fire protection element from Fig. 10a in top view. Fig. 11a shows the arrangement of Fig. 10a in case of a fire. Fig. 11b shows the fire protection element from Fig. 11a in top view. Fig. 12a shows the arrangement of Fig. 10a and Fig. 11a in case of longer fire duration. Fig. 12b shows the fire protection element from Fig. 12a in top view. Fig. 13 shows a first variant of the cross-section of the fire protection element. Fig. 14 shows a second variant of the cross-section of the fire protection element. Fig. 15 shows a third variant of the cross-section of the fire protection element. Fig. 16 shows a fourth variant of the cross-section of the fire protection element. Fig. 17a shows a seventh embodiment of the fire protection element during assembly. Fig. 17b shows the seventh embodiment of the fire protection element in plan view.
[0042] Fig. 1 shows a first embodiment of an exemplary fire protection element 1 in plan view. The fire protection element 1 comprises a flat carrier plate made of stainless steel as the carrier 2, further comprising a fire protection layer 3 and a sealing layer 5 arranged between the carrier 2 and the fire protection layer 3. In the illustrated embodiment, the sealing layer 5 consists of a silicone membrane. In the illustrated embodiment, the fire protection element 1 has a substantially circular basic shape with a diameter of 65 mm, with the outer edge 13 being substantially circular. In the area of opposing mounting elements 15, the diameter is 69 mm.
[0043] Two opposing gaps 7 are formed in the carrier plate, each opening at the outer edge 13 and running perpendicular to the outer edge 13 in the opening region. Further on, the gaps 7 are arranged parallel to the outer edge 13. In the embodiment shown, the gap 7 is 1 mm wide. A tab 6 is formed by the gap 7 and the outer edge 13. This tab 6 has a tab fastening area 8 with a fastening hole 10 and a tab spacer area 9, via which the tab fastening area 8 is connected to the rest of the carrier plate. The tab spacer area 9 ends at a first predetermined bending point 11, which runs perpendicular to the outer edge 13 from the outer edge 13 to the inner end of the gap 7. The tab fastening area 8 ends at a second predetermined bending point 12, which runs perpendicular to the outer edge 13 and is tangent to the fastening hole 10.In the illustrated embodiment, the first predetermined bending point 11 and the second predetermined bending point 12 form an angle of 75°. The connection of the tab spacer area 9 to the rest of the carrier plate is therefore located away from the loose end of the tab 6. The mounting elements 15 are each arranged in the area of the tabs 6.
[0044] In the illustrated embodiment, the fire protection element 1 also has a centrally arranged cable duct 14. The support 2 has a support cable duct with a diameter of 26 mm, the fire protection layer 3 has a protective layer cable duct with a diameter of 19 mm, and the sealing layer 5 has a sealing layer cable duct with a diameter of 5 mm, wherein the support cable duct, the protective layer cable duct, and the sealing layer cable duct have a common central axis.
[0045] Fig. Figure 2 shows a second embodiment of an exemplary fire protection element 1. This differs from the first embodiment in that two cable ducts 14 are formed in the form of elongated holes, which are arranged offset from the center of the support 2 between the tabs 6. Furthermore, this embodiment does not include a sealing layer 5.
[0046] Fig. 3 shows a third embodiment of an exemplary fire protection element 1. In this embodiment, three tabs 6 and three round cable ducts 14 are formed.
[0047] Fig. 4 shows a fourth embodiment of an exemplary fire protection element 1. In this embodiment, there are three cable feedthroughs 14 in the form of elongated holes, wherein a sealing layer 5 is enclosed with a round sealing layer cable feedthrough. The illustrated fire protection element 1 has three tabs 6, wherein the tab spacer region 9 is formed by two tab spacer region parts 16, which are aligned parallel to one another and are partially separated from one another by the gap 7. The first predetermined bending point 11 and the second predetermined bending point 12 in this case enclose an angle of 15° and are arranged close to one another. If the intumescent material 4 expands, the carrier plate is thus displaced essentially parallel to its central axis.
[0048] Fig. 5 shows a fifth embodiment which differs from the fourth embodiment in that the cable bushings 14 are round and no sealing layer 5 is included.
[0049] Fig. Figure 6 shows a sixth embodiment of the fire protection element 1, which is particularly suitable for distribution boxes. This embodiment has a substantially rectangular, in particular substantially square, basic shape, with the outer edge 13 arranged in a square shape. In this embodiment, several cable ducts 14 are formed. The fire protection element 1 has two opposing tabs 6. The first straight line (11) and the second straight line (12) are arranged close to one another.
[0050] Fig. 7a shows the fire protection element from Fig. 1 and Fig. 7b in the installed state. The fire protection element 1 is arranged in a recess 101 of a wooden component 100 such that the fire protection layer 3 faces the component. The cable duct 14 is arranged below a cable outlet 102, and a cable 103 is routed through the cable outlet 102 and the cable duct 14 into a flush-mounted box 104. The fire protection element 1 is attached to the component 100 via screws 105.
[0051] Fig. 7b shows that the first predetermined bending point 11 and the second predetermined bending point 12 enclose an angle of 75°.
[0052] Fig. 8a shows the arrangement of Fig. 7a at the beginning of a fire. The intumescent material 4 of the fire protection layer 3 has already expanded. The tabs 6 have already bent downward along the predetermined bending points. The flush-mounted box has already fallen out of the recess.
[0053] In Fig. Figure 8b shows how, by bending the tabs 6, the end of the tab spacing area 9, i.e., the first predetermined bending point 11, is pulled toward the tab fastening area 8. The first predetermined bending point 11 and the second predetermined bending point 12 thus approach each other in plan view.
[0054] Fig. 9a shows the arrangement of Fig. 8a, where the fire has already penetrated further into the component 100. The intumescent material 4 has expanded even further and the tabs 6 have bent even more.
[0055] In Fig. 9b it can be seen that due to this stronger bending of the tabs 6, the first predetermined bending point 11 and the second predetermined bending point 12 have come even closer together and the carrier plate has been twisted even further.
[0056] Fig. 10a shows the embodiment of Fig. 2 and Fig. 10b in installed condition. Component 100 has two cable outlets 102 for cables 103. Therefore, a fire protection element 1 was installed, which has two cable penetrations 14.
[0057] Fig. Figure 10b shows that the fire protection element 1 has two opposing cable openings 14 arranged between the tabs 6. The tabs 6 are designed such that the gap 7 extends in the same direction from the opening area oriented perpendicular to the outer edge 13, counterclockwise in the illustrated embodiment. In the assembled state, the first predetermined bending point 11 and the second predetermined bending point 12 are arranged at a distance from each other.
[0058] Fig. 11a shows the arrangement of Fig. 10a when a fire starts. The intumescent material 4 of the fire protection layer 3 has already expanded slightly. As a result, the tabs 6 are bent along the predetermined bending points. Fig. 11b shows how the first predetermined bending point 11 and the second predetermined bending point 12 have approached each other in plan view due to the bending of the tabs 6 and how the beam 2 has thereby twisted.
[0059] Fig. 12a shows the arrangement of Fig. 11a, where the component 100 is already severely damaged by the fire. The intumescent material 4 has expanded even further and the tabs 6 have bent even further. This is shown in Fig. 12b, since the first predetermined bending point 11 and the second predetermined bending point 12 have moved closer together in plan view. The beam 2 is thus rotated by 90° relative to its initial position.
[0060] Fig. 13 to 16 show different variants of exemplary fire protection elements 1 with different cross-sections.
[0061] Fig. 13 shows a first variant, wherein the sealing layer 5 is arranged only in the area of the cable feedthrough 14. The carrier 2 is glued to the fire protection layer 3 in the outer area and to the sealing layer 5 in the area of the cable feedthrough 14. The sealing layer 5, in turn, is glued to the fire protection layer 3. In the illustrated embodiment, the carrier 2 consists of a flat carrier plate with a thickness of 0.3 mm. The sealing layer 5 has a thickness of 0.5 mm. The fire protection layer 3 has a thickness of 1.8 mm. The fire protection element 1 is therefore flat and has a thickness of 2.6 mm in the area of the cable feedthrough 14 and a thickness of 2.1 mm in the edge areas.
[0062] Fig. Figure 14 shows a second variant of a fire protection element 1. In this variant, a carrier 2 is arranged on the top and bottom of the fire protection element 1. Each of these is bonded to a sealing layer 5. Two fire protection layers 3 are arranged between the two sealing layers 5.
[0063] Fig. Figure 15 shows a third variant of a fire protection element 1. In this variant, the carrier 2 is also fully bonded to a sealing layer 5. The sealing layer 5, in turn, is bonded to a fire protection layer 3. A sleeve 17 is arranged in the area of the cable entry 14, which shares a common axis with the cable entry 14. The sleeve 17 is made of the same intumescent material 4 as the fire protection layer 3.
[0064] Fig. Figure 16 shows a fourth variant of a fire protection element 1. In this variant, a sleeve 17 is also formed, but in this case, it is made of the material of the sealing layer 5. The sealing layer 5 and the sleeve 17 are 4 mm thick in this embodiment, so that the sleeve 17 is stably erected. In this embodiment, the sealing layer 5 is arranged only in the area of the cable feedthrough 14. In the edge area, the carrier 2 is bonded directly to the fire protection layer 3.
[0065] Fig. 17a shows a seventh embodiment of the fire protection element 1 during assembly. Fig. Figure 17b shows that the seventh embodiment has retaining tabs 18. The retaining tabs 18 are arranged between the tabs 6 and project laterally beyond the outer edges 13 of the support 2. The length of the retaining tabs 18 corresponds at least to the sum of the thickness and the radius of the fire protection element 1. To install the fire protection element 1, the retaining tabs 18 are bent onto the side of the fire protection element 1 facing away from the support 2. In Fig. Figure 17a shows how the fire protection element 1 is pushed over the end of a grooved installation hose 106. The cable 103 is pulled through the cable duct 14. The retaining tabs 18 already hold the fire protection element 1 in this position on the installation hose 106, so that the fire protection element 1 does not need to be held by hand for further installation.
[0066] Each of the illustrated designs and variants protects a recess in a component from fire and can be manufactured cost-effectively and installed quickly and easily. QUOTES CONTAINED IN THE DESCRIPTION
[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature
[0000] DE 102010052141 A1
[0005] DE 102021124092 A1
[0006]
Claims
[1] Fire protection element (1) for a recess (101) in a component (100) comprising a carrier (2) and a fire protection layer (3) made of an intumescent material (4) arranged on the carrier (2), characterized by in that the support (2) consists of a flat support plate, wherein at least two tabs (6) are formed for fastening the fire protection element (1) to the component (100), wherein the tabs (6) are each formed at least partially by a gap (7) arranged in the support plate, wherein the tabs (6) each have a tab fastening area (8) and a tab spacer area (9), wherein the tab fastening area (8) is separated from the rest of the support plate by the gap (7) and is connected to the rest of the support plate via the tab spacer area (9). [2] Fire protection element according to claim 1, wherein the carrier (2) consists of a material with high thermal conductivity, wherein the carrier (2) consists in particular of a metal with a melting point of more than 1000 °C. [3] Fire protection element according to one of claims 1 or 2, wherein the carrier plate is delimited laterally by outer edges (13), wherein the tabs (6) are formed by partial sections of the outer edges (13) and the gap (7), wherein the gap (7) opens in each case in the outer edge (13) of the carrier (2), and wherein it is provided in particular that the gap (7) is designed to run perpendicular to the outer edge (13) in an opening region. [4] Fire protection element according to one of claims 1 to 3, wherein in the tab spacer region (9) the gap (7) is formed to run at least partially parallel to the outer edge (13), wherein it is provided in particular that the tab spacer region (9) has at least two tab spacer region parts (16) running parallel to one another, which are partially separated from one another by the gap (7). [5] Fire protection element according to one of claims 1 to 4, wherein a first predetermined bending point (11) is formed between the tab spacing region (9) and the remaining support plate and a second predetermined bending point (12) is formed at the end of the tab fastening region (8) arranged remote from the loose end of the tab (6), wherein it is provided in particular that the first predetermined bending point (11) and / or the second predetermined bending point (12) are aligned perpendicular to the outer edge. [6] Fire protection element according to one of claims 1 to 5, wherein the support (2) has a substantially circular basic shape, in particular substantially circular outer edges (13), wherein for all tabs (6) the gap (7) forming the tab spacing region (9) extends in the same direction starting from the respective tab fastening region (8). [7] Fire protection element according to one of claims 1 to 6, wherein the support (2) has laterally outwardly directed mounting elements (15) for clamping the fire protection element in a recess and / or wherein the support (2) has laterally outwardly projecting bendable retaining tabs (18) for clamping to a grooved installation hose. [8] Fire protection element according to one of claims 1 to 7, wherein at least one carrier cable leadthrough is formed in the carrier (2), wherein it is provided in particular that the at least one carrier cable leadthrough is arranged offset from the center point of the carrier (2). [9] Fire protection element according to claim 8, wherein a protective layer cable feedthrough is arranged in the fire protection layer (3), wherein the protective layer cable feedthrough and the carrier cable feedthrough have a common center point and the protective layer cable feedthrough has a smaller cross-sectional area, in particular a smaller radius, than the carrier cable feedthrough. [10] Fire protection element according to one of claims 1 to 9, wherein a sealing layer (5) is arranged at least partially between the carrier (2) and the fire protection layer (3), in particular at least in the region of the carrier cable feedthrough and the protective layer cable feedthrough. [11] Fire protection element according to claim 10, wherein the sealing layer (5) has a sealing layer cable feedthrough, wherein the sealing layer cable feedthrough and the carrier cable feedthrough have a common center point and the sealing layer cable feedthrough has a smaller cross-sectional area, in particular a smaller radius, than the carrier cable feedthrough, wherein it is preferably provided that the sealing layer cable feedthrough has a smaller cross-sectional area, in particular a smaller radius, than the protective layer cable feedthrough. [12] Fire protection element according to one of claims 1 to 11, wherein the carrier (2) and / or the fire protection layer (3) and / or the sealing layer (5) are glued together. [13] Fire protection element according to one of claims 1 to 12, wherein the fire protection element (1) has several fire protection layers (3) arranged one above the other. [14] Fire protection element according to one of claims 1 to 13, wherein the fire protection element (1) has a support (2) on both sides, in particular on an upper side and an underside of the fire protection element (1). [15] Fire protection element according to one of claims 1 to 13, wherein the support (2), the fire protection layer (3), and in particular the sealing layer (5), have a cable lead-through (14), wherein a sleeve (17) is arranged on the side of the fire protection element (1) facing away from the support plate, wherein the cable lead-through (14) and the sleeve (17) have a common central axis, wherein in particular it is provided that the sleeve (17) is formed from the fire protection layer (3) and / or the sealing layer (5).
Citation Information
Patent Citations
Fire protection structure for electrical box, has flexible insert with cutouts that are formed in connection regions of base element and strap-shaped elements
DE102010052141A1
Installation box and intumescent insert for it
DE102021124092A1