Fastening element for plate-shaped elements

Abstract

Fastening element (1) for plate-shaped elements (2), comprising a planar base body (3) with a fixing section (4) and a coupling section (5), wherein the fixing section (4) is provided with fixing tabs (6) which are made of the same material and are integrally formed from the fixing section (4), wherein the fixing tabs (6) are resiliently and pivotally connected to the fixing section (4), and wherein the fixing tabs (6) project from the fixing section (4).

Description

[0001] The invention relates to a fastening element for plate-shaped elements, comprising a planar base body with a fixing section and a coupling section.

[0002] In drywall construction and room acoustics applications, panel-shaped elements are frequently used, comprising a fibrous structure such as glass wool, rock wool, or a plastic-fiber blend. If these panel-shaped elements form wall elements, for example, it is difficult to attach objects such as pictures to them. It is also conceivable to attach the panel-shaped elements to a ceiling using fasteners. In this case, the panel-shaped elements can form part of a ceiling structure, such as a suspended ceiling. To enable fastening options on such wall constructions, multi-layered constructions have often been used, with fasteners integrated into the panel-shaped elements. However, a disadvantage of this approach is that the fasteners cannot be retrofitted into such wall elements.Screw-in fasteners, on the other hand, either have a relatively low pull-out force in fiber-containing plate-shaped elements, so that no or at least no heavier objects can be attached there, or the fasteners are complex to manufacture and therefore expensive.

[0003] The invention is based on the objective of providing a fastening element for plate-shaped elements which can be subsequently incorporated into a construction using simple means and which has a high load-bearing capacity, at least in the tensile direction.

[0004] This problem is solved by the features of claim 1. Advantageous embodiments are described in the dependent claims.

[0005] The fastening element according to the invention for plate-shaped elements comprises a planar base body with a fixing section and a coupling section, wherein the fixing section is provided with fixing tabs which are formed integrally from the fixing section and are made of the same material, wherein the fixing tabs are resiliently and pivotally connected to the fixing section, and wherein the fixing tabs project from the fixing section in an unloaded state.

[0006] The fixing tabs preferably protrude from the fixing section on the side facing the coupling section. To attach the fastener, it is inserted into a plate-shaped element. A particular advantage is that assembly can be done without tools, or at least requires only simple hand tools. While the fastener is being inserted into the plate-shaped element, the fixing tabs fold against the fixing section. After insertion, the fixing tabs return to their folded-down position, making contact with the material of the plate-shaped element. Objects can then be attached to the coupling section. As soon as a tensile force is applied to the fastener via the coupling section by the attached object, the fixing tabs unfold further and interlock with the material of the plate-shaped element.This ensures that the fastening element is securely attached to the plate-shaped element and can withstand a high pull-out force.

[0007] The fixing tabs can each be arranged in an opening provided in the fixing section. This makes the fastening element particularly easy and cost-effective to manufacture.

[0008] The fixing tabs can be attached to the fixing section via a film hinge. To create the film hinge, the fixing tabs can be cut out of the fixing section by punching or cutting, simultaneously creating the openings. The fixing tabs are then articulated to the fixing section via the film hinge.

[0009] The fixing tabs can have at least one point at their free ends. These points improve the interlocking and penetration of the plate-shaped element's material when subjected to tensile stress. For this purpose, the free end of the fixing tabs can be tapered to a point. Alternatively, the free end can be concave, forming two points at each corner.

[0010] The fixing tabs can be bent, at least in sections. In particular, it is conceivable that the fixing tabs are provided with a longitudinal fold. This fold can be designed so that it faces the fixing section, thus limiting movement. This limits the amount of time the fixing tabs can fold under increased tensile force and provides maximum resistance to being pulled out of the element. Overall, the fold increases the mechanical stability of the fixing tabs.

[0011] The base body can be made of metallic material. A sheet metal base body is particularly preferred. For example, it is conceivable that the base body is made of steel or aluminum sheet. This results in a fastener with high strength and load-bearing capacity, and it is cost-effective to manufacture.

[0012] The base body can be curved, at least in sections. In particular, it is conceivable that the base body is provided with at least one folded edge, which preferably runs parallel to the direction of pull of the fastening element. Several folded edges can also be provided, so that the fastening element, viewed from above, is, for example, Z-shaped. The resulting outer areas of the plate-shaped element could also support further fixing sections. This improves the mechanical strength of the fastening element.

[0013] The coupling section can be provided with a receiving bore. Objects, such as hooks and the like, can be attached to the fastener via this receiving bore. The coupling section can also be hook-shaped. In principle, it is also conceivable to equip the coupling section with a thread, grooves, or similar features.

[0014] The side of the fixing section facing away from the coupling section can be arrow-shaped. This arrow-shaped design makes it particularly easy to insert the fastening element into a plate-shaped element.

[0015] The fastener can have several fixing tabs that protrude from both sides of the fixing section. This ensures that the fastener is held particularly securely in the plate-shaped elements.

[0016] A system according to the invention comprises at least one plate-shaped element into which at least one fastening element, as described above, is inserted, with an object being attached to the receiving bore of the coupling section. The plate-shaped element can be part of a wall construction. It is particularly advantageous that the fastening element can also be subsequently inserted into a plate-shaped element of a finished construction, for example, a wall construction. For this purpose, the fastening element is inserted into the plate-shaped element, with the fixing tabs aligning themselves with the fastening element during insertion. If an object is then attached to the coupling section and a tensile force is applied to the fastening element via the object, the fixing tabs fold away from the fixing section and engage in the plate-shaped element.

[0017] The plate-shaped element can comprise at least one layer of fibers. For this purpose, the plate-shaped element can, for example, be a sandwich construction and have a layer of glass wool, rock wool, or a plastic fiber mixture. The fixing tabs of the fastening element then interlock with the fiber layer and fix the fastening element in the plate-shaped element. The plate-shaped element can, for example, be a panel-shaped room acoustic element and have at least one cover layer. The cover layer can have a coating in the form of a plastic film. Alternatively, the cover layer can be in the form of a paint layer or made of a thin porous material. Preferably, the plate-shaped element has two cover layers, and a fiber structure, for example made of glass wool, rock wool, or textile fibers, is arranged between the two cover layers.

[0018] Some embodiments of the fastening element and the system according to the invention are explained in more detail below with reference to the figures. These show, schematically: Fig. 1 a fastening element in top view; Fig. 2 a fastening system in side view; Fig. 3 in partial section a system with a fastening element and a plate-shaped element.

[0019] The Fig. 1 and Fig. Figure 2 shows a fastening element 1 for plate-shaped elements 2, comprising a flat base body 3. The base body 3 is made of metallic material and, in the present embodiment, consists of a sheet of steel.

[0020] The base body 3 has a fixing section 4 and a coupling section 5. The coupling section 5 is provided with a receiving bore 8, to which objects can be attached to the fastening element 1. The fixing section 4 is provided with fixing tabs 6, which are formed integrally from the fixing section 4 and are made of the same material. The fixing tabs 6 are spring-loaded and pivotally connected to the fixing section 4 via a film hinge.

[0021] In the present embodiment, the fastening element 1 comprises three fixing tabs 6, wherein the middle fixing tab 6 is bent away from the fixing section 4 in contrast to the other two fixing tabs 6, so that the fixing tabs 6 project from the fixing section 4 on both sides. In the present embodiment, the fixing tabs 6 project from the fixing section 4 at an angle of 20°. Angles between 10° and 30° are advantageous.

[0022] The fixing tabs 6 are each arranged in an opening 7 provided in the fixing section 4. For manufacturing, the fixing tabs 6 are cut out of the fixing section 4 by punching or cutting, simultaneously creating the opening 7. The fixing tabs 6 are concave at their free ends, so that two points are formed at the corners of the free end.

[0023] The side of the fixing section 4 facing away from the coupling section 5 is arrow-shaped, so that in the top view an arrow-shaped tip results, which simplifies the insertion of the fastening element into a plate-shaped element 2.

[0024] Fig. Figure 1 shows the fastening element 1 in a top view and Fig. 2 in side view.

[0025] Fig. Figure 3 shows in partial section a system 9 comprising a plate-shaped element 2 and a fastening element 1 according to Fig. 1 or Fig. 2. The plate-shaped element 2 is, in this case, a room acoustic element comprising two face layers and a fiber layer arranged between the two face layers. The face layers are made of a thin, dimensionally stable material. The plate-shaped element 2 also comprises a fiber layer made of rock wool, glass wool, or a plastic fiber composite. The fastening element 1 is inserted into the plate-shaped element 2, with the fixing tabs 6, which project from the fixing section 4, interlocking with the fiber material in the fiber layer. The fixing tabs 6 of the fastening element 1 interlock in the matrix of the fiber layer of the plate-shaped element 2, so that the fastening element 1 can withstand high tensile forces.

[0026] An object 10 in the form of a fastening hook is attached to the coupling section 5 and is inserted into the receiving bore 8 of the coupling section 5.

Claims

[1] Fastening element (1) for plate-shaped elements (2), comprising a planar base body (3) with a fixing section (4) and a coupling section (5), wherein the fixing section (4) is provided with fixing tabs (6) which are made of the same material and are integrally formed from the fixing section (4), wherein the fixing tabs (6) are resiliently and pivotally connected to the fixing section (4), and wherein the fixing tabs (6) project from the fixing section (4). [2] Fastening element according to claim 1, characterized by that the fixing tabs (6) are each arranged in an opening (7) provided in the fixing section (4). [3] Fastening element according to claim 1 or 2, characterized by , that the fixing tabs (6) are attached to the fixing section (4) via a film hinge. [4] Fastening element according to any one of claims 1 to 3, characterized by, that the base body (3) is made of metallic material. [5] Fastening element according to any one of claims 1 to 4, characterized by , that the coupling section (5) is provided with a receiving bore (8). [6] Fastening element according to any one of claims 1 to 5, characterized by , that the side of the fixing section (4) facing away from the coupling section (5) is arrow-shaped. [7] Fastening element according to any one of claims 1 to 6, characterized by , that the fixing tabs (6) protrude on both sides from the fixing section (4). [8] Fastening element according to any one of claims 1 to 7, characterized by , that the fixing tabs (6) have at least one point at the free ends. [9] Fastening element according to any one of claims 1 to 8, characterized by that the fixing tabs (6) are bent at least in sections. [10] Fastening element according to any one of claims 1 to 9, characterized by, that the basic body (3) is bent at least in sections. [11] System (9) comprising at least one plate-shaped element (2) into which at least one fastening element (1) according to one of the preceding claims is inserted, wherein an object (10) is fixed to the coupling section (5). [12] System according to claim 11, characterized by , that the plate-shaped element (2) comprises at least one layer of fibers.

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