Sectional door leaf

Abstract

The invention relates to a sectional door leaf with mutually movable elements that can be repositioned in lateral guide rails and consist entirely or partially of light metal hollow chamber profiles (1, 8, 9, 12, 13), wherein the light metal hollow chamber profiles (1, 8, 9, 12, 13) have at least one, preferably several, enclosed hollow chambers, wherein the hollow chambers are preferably spaced between light metal profile sections (5, 6) by insulating spacers (2), wherein at least one hollow chamber of the light metal hollow chamber profile (1, 8, 9, 12, 13) is permanently filled with a porous, cured insulating foam to form a thermal insulation composite system.

Description

[0001] The invention relates to a sectional door leaf which is constructed from a thermal insulation composite system with lightweight metal hollow chamber profiles.

[0002] DE 78 37 319 U discloses a profile bar for window frames, door frames or the like with hollow plastic profiles and metallic reinforcement, in which the metallic reinforcement consists of at least one perforated sheet metal strip which has composite holes distributed over its length, so that a plastic inner layer is applied to the inside of the perforated sheet metal strip, which connects to the solid plastic profile through the composite holes.

[0003] A method for manufacturing a wing frame member for swing gates is known from DE 26 03 828 C2, wherein the swing gates consist of a hollow sheet metal profile with folded and bonded side edges, which form a connecting web extending over the length of the hollow profile for a wing frame infill, and a rigid foam infill in the cavity of the hollow profile.

[0004] DE 299 24 697 U1 describes a sectional door with sectional door elements that are pivotally connected to each other about a corresponding pivot axis by hinges attached to the inside of the sectional door elements. The cores of the sectional door elements consist essentially of a porous, hardened foam, which is bounded on the outside by sheet metal elements.

[0005] Lightweight hollow chamber profiles used in sectional door panels or garage doors are subject to very different conditions.

[0006] Thermal stresses, for example from solar radiation, but also from cold, increasingly exceed the required thermal insulation even with thermally broken lightweight metal profiles, especially with ever-larger door leaves. Therefore, the object of the invention is to significantly improve the thermal insulation of lightweight hollow chamber profiles that have at least one cavity provided with insulating spacers between an outer and inner skin. This object is achieved by the features of claim 1. The dependent claims following claim 1 describe a further embodiment of the inventive concept.

[0007] In automated processing of lightweight metal hollow chamber profiles in bar stock, i.e., for example with a length of approximately 6 meters, lightweight metal hollow chamber profiles are used for sectional door leaves and also garage door leaves, in which lightweight metal sections on the outside and inside have insulating spacers partially between existing hollow chambers.

[0008] In gate manufacturing, these lightweight hollow metal profiles are automatically cut to the required lengths upon delivery and processed in further steps, as this is the only way to achieve cost-effective production. In this case, to meet thermal insulation requirements, the lightweight hollow metal profiles are filled with a fine-pored insulating foam in a subsequent step after their manufacturing process. To achieve good thermal insulation of the lightweight hollow metal profile, the profile is filled with a curable foam in at least one hollow chamber, preferably one that is also separated by insulating webs. This type of insulating foam is very fine-pored and serves not only as thermal insulation but also as sound insulation. The insulating foam is applied in a paste-like form directly into the profile or at least one hollow chamber.

[0009] There are essentially two types of insulating foam available: a one-component foam and a two-component foam. The one-component foam consists primarily of a prepolymer of isocyanate and polyol. The ambient temperature, relative humidity, and the moisture content of the lightweight hollow metal profile itself are crucial for foam formation and the reaction process. At an ambient temperature of 20°C, the one-component foam cures completely within just 5 to 8 hours. The carbon dioxide it contains ensures uniform bubble formation within the curing insulating layer.

[0010] Two-component insulating foams consist of two reactants, namely crosslinkers or hardeners. Moistening is not necessary for curing with two-component insulating foams. A two-component insulating foam achieves higher strengths than a one-component insulating foam and cures very quickly and uniformly. This simplifies curing control. By selectively choosing monomers, the adhesive layer's properties, such as strength, elasticity, deformation behavior, and resistance to chemical influences, can be controlled.

[0011] Whether a one- or two-component insulating foam is used to fill at least one hollow chamber of the lightweight metal hollow chamber profiles is determined by the manufacturer. The two-component insulating foam hardens on its own without the influence of moisture, since the components required for hardening are added during mixing and activation.

[0012] It has been shown that such lightweight metal hollow chamber profiles, supplied as bar stock with at least one foam-filled hollow chamber, can be easily integrated into automated production processes for cutting and subsequent further processing. These modified lightweight metal hollow chamber profiles, whose at least one hollow chamber is filled with a porous, curable insulating foam, can therefore be incorporated into existing processing procedures without any limitations, just like conventional lightweight metal profiles.

[0013] Insulating foam inserted into at least one hollow chamber has a fine-pored cell structure, which, moreover, transforms into a solid structure after the foaming process has completed. This type of insulating foam also exhibits very good adhesion to the insulating spacers and the lightweight metal sections. Even miter joints or butt joints between two lightweight hollow chamber profiles can be easily created.

[0014] The invention is illustrated below using exemplary embodiments. Figure 1 shows a thermal insulation composite of an insulated light metal hollow chamber profile with a completely foamed hollow chamber; Figure 2 shows a preferred embodiment of two superimposed profile arrangements in a sectional view, in which the respective hollow chambers are filled with insulating foam on the outside; Figure 3 shows a detailed view of a modified light metal hollow chamber profile in section with two hollow chambers; Figure 4 shows a further embodiment as shown in Figure 1. Figure 3 .

[0015] In the Figure 1A lightweight metal hollow chamber profile 1 is shown, which has lateral lightweight metal sections. A section 6 is shown on one outer side and a section 5 on the inner side, and an insulating spacer 2 is inserted between these lightweight metal sections 5 and 6 for spacing. After its manufacture, such a lightweight metal hollow chamber profile 1 is filled with insulating foam in the interior of the hollow chamber. This insulating foam is a fine-pored foam that adheres well to the inner walls of the hollow chamber and also hardens quickly overall.

[0016] In the Figure 2It is shown that such a lightweight hollow metal profile can be used without restriction as a bar stock for creating a frame, for example for a section of a sectional door or the like. For the frame design with a window, a glass element 4 or equivalent is fixed, for example, on the outside of the door leaf by a seal 3 and on the inside by a retaining strip 7.

[0017] In the schematically illustrated embodiment according to Figure 2This is a lightweight metal profile, designed as a lightweight hollow chamber profile 9, which is attached to an upper horizontal edge of a movable element of a sectional door panel. In this case, the lightweight metal hollow chamber profile 9 is divided into two separate hollow chambers by a partition 10. This creates a first hollow chamber on the outer side 6, which is closed at the top and bottom by insulating spacers 2. The hollow chamber 14 adjoining this on the left side is free of insulating material, as this only fills the outer hollow chamber. This allows for a good connection between horizontal and vertical lightweight metal hollow chamber profiles via the inner hollow chamber 14, without creating thermal bridges.This embodiment also relates to a light metal hollow chamber profile 8 located above it, which forms the lower termination of the element of the sectional door or garage door above it. Here too, the outer hollow chamber is filled with insulating foam, and the outer hollow chamber is again enclosed by lateral light metal sections 5, 6 and by insulating spacers 2 at the top and bottom.

[0018] Especially for the design of elements with a frame in sectional door leaves or garage door leaves, the lightweight metal hollow chamber profiles 12 and 13, which are used in the Figures 3 and 4 These are shown as examples and are used. These light metal hollow chamber profiles 12 and 13 each have two separate chambers. The outer wall of the light metal hollow chamber profile 12, 13 is also connected to the light metal sections on the top and bottom by insulating spacers 2.

[0019] As shown in the exemplary implementation examples in the Figures 3 and 4 A frame construction can be easily manufactured from a lightweight metal hollow chamber profile with insulating foam filling in at least one of the hollow chambers, supplied as bar stock, within an existing production process. In practice, it has been shown that the lightweight metal hollow chamber profiles 1, 8, 9, 12, and 13, supplied as bar stock and with at least one foam-filled cavity, have proven effective and contribute to their use as thermal insulation composite systems in sectional doors or similar applications due to their enhanced thermal insulation. Reference sign

[0020] 1 Lightweight hollow chamber profile 2 Lightweight hollow chamber profile 3 Seal 4 Glass element 5 Inner section 6 Outer section 7 Retaining strip 8 Lightweight hollow chamber profile 9 Lightweight hollow chamber profile 10 Partition 11 Seal 12 Lightweight hollow chamber profile 13 Lightweight hollow chamber profile 14 Inner hollow chamber

Claims

1. Sectional door leaf with mutually movable elements which are repositionable in lateral guide rails and consist entirely or partially of light metal hollow chamber profiles (1, 8, 9, 12, 13), wherein the light metal hollow chamber profiles (1, 8, 9, 12, 13) have at least one, preferably several, enclosed hollow chambers, wherein the hollow chambers are preferably spaced between light metal profile sections (5, 6) by insulating spacers (2), characterized by the fact that at least one hollow chamber of the light metal hollow chamber profile (1, 8, 9, 12, 13) is permanently filled with a porous, hardened insulating foam to form a thermal insulation composite system.

2. Sectional door leaf according to claim 1, characterized by the fact thatthe movable elements of the sectional door leaf consist of outerly spaced sheet metals, the space between which is filled with an insulating material, wherein the elements are provided on the top and bottom with light metal hollow chamber profiles (8, 9) which have at least one hollow chamber which is filled with a porous, curable insulating foam.

3. Sectional door leaf according to claim 1, characterized by the fact that the movable element has a frame design made of light metal hollow chamber profiles, the individual fields of which are filled by glass elements (4) or the like, wherein at least one of the hollow chambers of the light metal hollow chamber profiles is permanently filled with the fine-pored, hardened insulating foam.

4. Sectional door leaf according to claim 1, characterized by the fact that The insulating foam consists of a 1-component or 2-component foam with a fine-pored structure after curing.

5. Light metal hollow chamber profiles as bar stock with at least one closed hollow chamber, which are used in the manufacture of sectional door leaves according to one or more of the preceding claims by means of a fine-pored, hardened insulating foam.

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