Building closure

Abstract

The invention relates to a building closure with a movable gate or door leaf as a single-piece or multi-part element, which is constructed from several individual panel bodies connected to one another by hinges, wherein the cross-sectional structure consists of an outer and an inner metallic cover element, and wherein an insulating core is present between the cover elements, the inner cover element of the gate or door leaf being designed as a hybrid element. The cover element is connected to a flat plate made of a thermoplastic, which is weather-resistant, impact-resistant, and exhibits high rigidity.

Description

[0001] The invention relates to a building closure with a movable gate or door leaf, which is made in one piece or in multiple parts from several panel bodies connected to each other by hinges, wherein the cross-sectional structure of which essentially consists of a metal cover element on the outside of the leaf and a metallic cover element on the inside of the leaf, wherein the cavity between the cover elements is filled with an insulating core.

[0002] From WO 2004 / 009929 A1, a panel element has become known which consists of a pair of sandwich-like connected sheets with an insulating layer in between.

[0003] DE 10 255 729 B3 discloses a door leaf for a sectional door made of hingedly connected panels, each consisting of an outer sheet metal shell and an inner sheet metal cover that closes the outer sheet metal shell and is filled with insulating foam.

[0004] Increasingly, doors, especially sectional doors or other types of doors, incorporate insulating materials between two outer panels, creating a sandwich-like structure with maximum mechanical strength. These elements are relatively inexpensive to manufacture while simultaneously providing excellent sound and heat insulation. However, they do not offer very high levels of burglary protection.

[0005] The object of the invention is to improve the burglary resistance of building locks. The implementation of this enhanced burglary resistance should result in only a minimal increase in the weight of the building lock while simultaneously achieving high stability. The enhanced burglary resistance should be easy to implement and can be retrofitted to existing building locks. Furthermore, the fire protection properties of the building locks should not be compromised by the increased burglary resistance.

[0006] The object of the invention is achieved by the features of claim 1. The dependent claims following the main claim contain a further embodiment of the inventive concept.

[0007] Building closures refer to doors or gates, especially sectional doors, and their leaves. To make these building closure leaves more burglar-resistant, a thermoplastic sheet is attached to the inner surface of the door leaf. This thermoplastic material is significantly lighter than the metal covering elements of the doors and gates. Therefore, using thermoplastic sheets does not substantially increase the weight of the door or gate leaf. Such a sheet is weather-resistant, impact-resistant, and highly rigid. Suitable materials for this type of sheet include polycarbonate and polymethyl methacrylate.

[0008] Polycarbonates typically contain at least 5% crystallites and are therefore considered amorphous. This gives them high strength, impact resistance, stiffness, and hardness. They are also highly resistant to water and many mineral acids and aqueous solutions. Furthermore, they are flame-retardant because a flame on a polycarbonate surface extinguishes itself immediately when the primary flame source is removed. As a result, polycarbonate meets the requirements of fire classes B1 or B2.

[0009] The sheets can be used in varying thicknesses, ranging from one to several millimeters. Polycarbonates are very easy to process in varying thicknesses and, moreover, exhibit no post-shrinkage.

[0010] Such polycarbonate sheets can be securely bonded to the metallic cover elements, even when painted, either subsequently or during the manufacturing process using adhesive tapes or other adhesive materials. In addition to a material-bonded connection, it is also possible to attach these sheets to the inner cover elements using screws, allowing for easy replacement. In another preferred embodiment, the connection between the sheet and the metallic cover layer can also be achieved using blind rivets. These connection methods result in a hybrid element in the door and gate leaves with the additional thermoplastic sheets.

[0011] To achieve even greater strength, stiffness, and creep resistance, glass fibers can be added to the polycarbonate. The proportion of glass fibers can be around 30%. The combination of polycarbonate and glass fibers makes this type of sheet material particularly suitable for prolonged exposure to high temperatures and heavy loads.

[0012] Another material that can be bonded to the inner sheet surface in the form of a sheet is polymethyl methacrylate (PMMA). PMMA is also a thermoplastic that can be manufactured cost-effectively in sheet form. This material also exhibits fracture resistance and is very impact-resistant. Furthermore, it is weather- and UV-resistant and, with a density of 1.19 g / cm³, very lightweight. The densities of PMMA and polycarbonate are roughly comparable. PMMA is also flame-retardant when the primary flame exposure is removed. Therefore, PMMA meets the requirements of fire classes B1 or B2.

[0013] Polymethyl methacrylate can be bonded to the metallic or painted surfaces of the inner cover elements using a wide range of high-performance adhesives for an efficient hybrid bond. For example, solvent-based adhesives can be used, which cure quickly and thus provide rapid initial strength to the additional sheet applied to the inner surface of the cover element. Two-component adhesives can also be used. Even construction silicone is generally suitable for bonding the sheets at the edges. Adhesive tapes can also be used with this material, as with polycarbonates. In addition to these (non-exhaustive) bonding options, it is of course possible, as with polycarbonates, to fasten the sheets to the cover element using screws or other mechanical means.

[0014] Both the bonded connections, as well as the screw connections or rivet connections in conjunction with the attached panels and the inner cover elements, can preferably be implemented in the edge areas. This creates reliable burglary protection against intrusion from the outside into the interior of the building, thanks to the excellent material properties.

[0015] It has been shown that a burglar-resistant version can be provided in a simple and cost-effective design for both single-leaf doors and multi-part gate elements, such as sectional doors with their panel bodies. This is achieved in particular by using a flat hybrid element consisting of two spaced-apart, metallic cover elements and the cavity between them filled with an insulating core, and additionally combining the inner surface of one element with a sheet of polycarbonate or polymethyl methacrylate.

[0016] As tests have shown, it is fundamentally possible to retrofit existing door or gate leaves or their elements with an additional sheet of varying thickness made of polycarbonate and polymethyl methacrylate on the inside of these elements.

Claims

1. Building closure with a movable gate or door leaf as a single-piece or multi-part element, consisting of several hinged individual panel bodies, wherein the cross-sectional structure consists of an outer and an inner metallic cover element, and wherein an insulating core is present between the cover elements. characterized by the fact that The inner cover element of the gate or door leaf is designed as a hybrid element, in which a flat panel made of a thermoplastic is connected to the cover elements, which is weather-resistant and impact-resistant and has high rigidity.

2. Cover element according to claim 1, characterized by the fact that the sheet is made of polycarbonate or polymethyl methacrylate.

3. Cover element according to claims 1 and 2, characterized by the fact thatthe thermoplastic plate is screwed and / or riveted to the inner cover element, wherein the screwing and / or riveting of the thermoplastic plate is essentially carried out in the edge areas of the cover element.

4. Cover element according to claims 1 and 2, characterized by the fact that the panel is connected to the inner cover element of the door or gate leaf by a material bond, whereby the material bond between the thermoplastic panel is carried out by an adhesive bond over the entire surface or approximately in the edge areas of the leaf with the inner cover element.

5. Cover element according to claim 4, characterized by the fact that The connection between the thermoplastic plate and the inner cover element is made using adhesive tapes.

6. Cover element according to one or more of the preceding claims, characterized by the fact that the thermoplastic board is assigned to fire class B1 or B2.

7. Cover element according to one or more of the preceding claims, characterized by the fact that the thermoplastic sheet is reinforced with glass fibers, preferably with a glass fiber content of about 30% or more.