DE20209466U1 - Fastening of wire mesh or wire mesh in grooves of profile bars - Google Patents

Description

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Dipl.-Ing. (FH) Jörg Schimitzek,

Bornfelsgasse 26, 65589 Niederzeuzheim

Fastening of wire mesh or wire grids in grooves of profile bars

The invention relates to the fastening of wire mesh or wire grids to profile bars, wherein these profile bars can have one or more open and/or concealed grooves.

Such fastenings are used when wire mesh or wire netting and profile rods are assembled to form two-dimensional surface elements or three-dimensional structures. Two-dimensional surface elements are used, for example, for mobile or stationary room division or demarcation of locations that generally pose a potential hazard or that need to be protected from unauthorized access. Three-dimensional structures are used, among other things, as mobile or stationary enclosures for machines that need to be demarcated for accident prevention reasons. Furthermore, three-dimensional shapes are used on a large scale in animal husbandry.

According to the current state of the art, various fastening options are known. Firstly, there are special clamping profiles where the wire can only be fastened in the open profile groove. With clamping profiles, fastening is usually achieved by pressing the wire against one of the profile walls using a spring plate or another internal profile with corresponding adjusting screws so that the wire is thereby fixed. It is also known that the profile consists of two parts, the wire is placed between the two profile halves and these are then connected to one another either by a spring mechanism or a corresponding screw connection.

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There are sometimes inadequate fastening options available for fastening wire mesh or wire grids to profile bars that are not specifically designed as clamp profile bars. It would be conceivable to insert guide rails or sealing lips into the grooves of the profile bars to hold the wire. However, these are preferably used for fastening rigid, disc-shaped surface elements (e.g. plastic panels). All of the fastening options mentioned above run all the way around the entire length of the profile bar or wire mesh. It is not possible to fasten them at specific points. Connectors are available for this purpose, which can be loosely attached to the ends of a wire and then fixed in the groove of a profile bar.

A connection of wire mesh or wire grids to profile bars with concealed grooves is not known.

The connection options listed above have one common disadvantage: very limited variability. The only known clamping profiles are square or rectangular cross-sections, with the grooves always at right angles to one another. This means that only right-angled floor plans can be created with these profile bars. For design reasons or the layout of the floor plan (e.g. hexagon, octagon) of a structure, however, it is often necessary to use profile bars that offer the option of creating such shapes without any additional connectors, etc. The grooves in such profile bars can, for example, be at angles of 30°, 45° or 60° to one another. Another disadvantage is that these clamping profile bars are only available in one dimension depending on the manufacturer (e.g. 40 x 40 mm). Another disadvantage is that all components in a structure must be used exclusively by one manufacturer. This applies in particular to the point-based fastening options. The combination of a profile from the manufacturer &khgr; It is not possible to use the connections for fastening wire elements from manufacturer y.

For all types of profile bars, where the wire is attached over the entire length of the profile or all around the wire, this is disadvantageous because it leads to unnecessary waste of materials and increased workload. In the case of wire mesh elements in particular, a point-based attachment is completely sufficient. Furthermore, there is an increased risk of injury with the non-point-based variants, because the processor has to push the clamping plate over a long distance (up to 6 m) into a thin slot in the clamping profile, for example in the case of clamping profiles with a clamping plate. Since this clamping or spring plate

consists of a very thin strip of sheet metal, cuts can easily occur during this activity.

In contrast, the invention is based on the object of creating a fastening in which the material requirements and the working time for production and processing are reduced to a minimum, and at the same time the fastening is absolutely universally applicable. Universal means that the fastening can be used on any profile regardless of the shape or dimensions of the cross-section, the material, the angle at which the grooves are positioned to one another, the wire thickness of the mesh or grid to be fastened or the number or position of the open or hidden grooves.

This task is solved by the fact that no special clamping profiles etc. are necessary for the required connection between the profile and the wire, but that the wire mesh or the wire grid itself represents the actual fastening or takes on the task of a fastening element and thus all types of profiles can be used.

What is important for the invention is that it is a possibility of point fastening in which any number of ends of a wire mesh or wire grid, depending on the application, are processed in such a way that the simplest aids (hereinafter referred to as fixing elements or adapters), such as washers with nuts, slot nuts, hammer nuts or (threaded) sleeves, etc., can then be attached. On the one hand, it is possible to attach the fixing elements directly to the wire ends, or first to mount adapters on the rod ends to which the fixing elements are then attached. The fixing elements and adapters can be glued, pressed, squeezed, welded or screwed, for example. If the fixing elements or adapters are screwed, threads must first be cut on the ends of the wire grid rods and/or on the adapters. In the next step, the respective fixing elements are then mounted on the wire ends or the adapters and then inserted into the profile grooves. The variant with the previously attached adapters may be necessary for very thin wire thicknesses to ensure greater stability. All of these parts have the advantage that they are standard parts that can be obtained without any great effort and can be installed in all profile grooves. The threads are very easy to produce with a standard threading die.

The invention is designed in such a way that not always the same number of wire ends have to be provided with threads. This depends on the

The application depends on the wire mesh itself. For example, in the case of partition walls to visually demarcate an area, a minimum number of threads is completely sufficient. In contrast, the number of fastening points can be increased to a maximum. This can be necessary, for example, in applications in animal husbandry.

An ideal connection is created by first providing a corresponding number of wire ends with threads. The thread is advantageously cut so that it always protrudes from the groove, even if the wire is pushed as far as possible into the groove. The threads are then provided with fixing elements. These can be the standard parts listed above (nuts, etc.).

In the next step, the wire is pushed into the groove of the profile bar so that at least one fixing element rests on the outside of the profile bar or at least one fixing element is pushed into the groove. A combination is also possible.

The invention is explained using the embodiments shown in the drawings. It is shown in:

Fig. 1 the cross-section of a possible profile bar, which is oriented in all directions
has a groove along its longitudinal axis;

Fig. 2 the cross-section of a possible profile bar, which is oriented in all directions
It has a groove along its longitudinal axis, one of which is concealed.
groove is formed;

Fig. 3 a rectangular frame consisting of four profile bars, into which a
Wire mesh according to the invention is introduced;

Fig. 4 the simplest design of fastening a drag fabric, centrally in the profile groove, with only one fixing element;

Fig. 5 the fastening of a drag fabric, centrally in the profile groove, with two identical fixing elements of Fig. 4;

Fig. 6 the fastening of a drag fabric, centrally in the profile groove, with two different fixing elements;

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Fig. 7 the fastening of a drag fabric, off-center in the profile groove, with two identical fixing elements;

Fig. 8 the fastening of a drag fabric, centrally in a concealed profile groove, with two different fixing elements;

Fig. 9 the fastening of a wire mesh, centrally in a profile groove, with two different fixing elements, where the thread is not applied directly to the end of a wire mesh rod;

Combinations and variations of the examples listed are of course possible.

Fig. 1 shows the cross-section of a possible profile bar 1. This has a groove on all sides in the direction of its longitudinal axis.

Fig. 2 shows the cross-section of a possible profile bar 2. This has a groove on all sides in the direction of its longitudinal axis, but one of these is designed as a concealed groove. The wall 16 forms the groove cover.

Fig. 3 shows an example of a rectangular, two-dimensional surface element consisting of four profile bars. A wire mesh according to the invention is attached within the profile frame. Fig. 3 serves primarily to illustrate Figs. 4 - 8.

Fig. 4 shows an example of the simplest fastening of a wire mesh to a profile bar 1 according to the invention, with the horizontal wires 3 being arranged centrally in the groove 9 and the adjoining chamber 8. Due to this design, it is not possible with this type of wire mesh to also attach the vertical bars 4 centrally in the groove 9, since the wires 3 and 4 are arranged in two planes due to the manufacturing process. However, fastening of the vertical bars can be achieved with the inventive design from Fig. 8. The same applies to Fig. 5 and Fig. 6. For the variant in Fig. 4, only two fixing elements are required per fastening point. These can be, for example, a washer 7 and a nut 6. A nut 6 is first screwed onto the external thread 5 of the horizontal wire 3 and then the washer 7 is pushed on. The wire element is then inserted into the groove 9 of the profile bar 1 such that the nut 6 and the washer 7 are located outside the groove 9 and the hollow chamber 8 of the profile bar 1.

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It is advantageous to have the same number of fastening points on opposing profile bars, as shown in the example in Fig. 3, and to position them in the same horizontal plane. A stable fastening of the wire element between the two vertical profile bars is achieved by screwing the nuts of the opposing fastening points in the direction of the profile bar. This creates a tension that holds the wire mesh in place. This fastening variant could be used for simple partition walls. All of the following variants are particularly suitable in cases where compressive and tensile forces can act on the wire mesh.

In Fig. 5, the same fixing elements as in Fig. 4 are used. However, to fix the wire mesh, another nut 6 and another washer 7 are required. The first nut 6 is first screwed onto the external thread 5, according to the invention, of the horizontal wire 3 and then the two washers 7 are pushed on. The second nut forms the final part. The wire element is inserted into the groove 9 of the profile bar 1 so that the first nut 6 and the first washer 7 are located outside the groove 9 and the hollow chamber 8 of the profile bar 1. The second nut 6 and the second washer 7 are located in the hollow chamber 8 behind the groove 9. Advantageously, the nut 7 inside the hollow chamber is a self-locking nut, which prevents it from unscrewing itself during assembly. In this case, the stable fixation of the wire mesh between two opposing profile bars is achieved by screwing the two nuts 6 against each other, thus resulting in a pliers-like function, with the groove 9 lying centrally between the four fixing elements 6 and 7. This is done by tightening the nut 6 located outside the hollow chamber 8 against the wall of the profile bar 1 from the outside.

Fig. 6 shows a fixing option that corresponds in principle to Fig. 5. Fig. 6 differs in that the fixing elements 6 and 7 located in the hollow chamber 8 are replaced by a slot-block-like element 10. In the middle of this fixing element there is a hole 11, on the wall 12 of which a thread is cut so that this element can be screwed onto the external thread 5 at the end of a grid bar 3 or 4. The wire grid is again fixed by tightening the nut 6 located outside the hollow chamber 8. The fixing element 10 is simultaneously pressed into the groove with its pin-like offset.

Fig. 7 shows the possibility of eccentric arrangement of the horizontal and vertical bars. In this example, so-called slotted elements 13 and disc nuts 14 can be used as fixing elements. The advantage of the slotted elements 13 is that

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the recess 15 is designed in such a way that the arrangement of the lattice bars is variable. The lattice elements are again stabilized by the pincer-like function of the disc nuts 14 pressing against each other, which is achieved by tightening the disc nut 14 located outside the hollow chamber 8.

Fig. 8 shows the possibility of fastening wire mesh to profile bars 2 with a groove 9 covered by a wall 16. For this purpose, the ends of the wire bars 3 or 4 to be fastened are provided with a corresponding external thread 5 according to the invention, onto which so-called threaded sleeves 23 can then be screwed. This sleeve 23 is expediently designed so that a hole 17 is drilled into one end and its wall 24 is provided with an internal thread. The other end of the sleeve 23, similar to the wire bars 3 and 4, is provided with an external thread 20. A fixing element 19 (e.g. a nut) is screwed onto this external thread 20 so far that it is located outside the profile bar 2 after the sleeve 23 has been inserted into the profile bar 2. The hole 18 or 21, which serves to accommodate the sleeve 23, can be placed either centrally or eccentrically in the profile groove 9 or the hollow chamber 8. To fix the grid element, the grid bars 3 and 4 with the screwed-on threaded sleeves 23 are inserted into the hole 18 or 21. The fastening is additionally reinforced by screwing the external fixing elements 19, since the same effect is achieved here as with the variant in Fig. 4.

Fig. 9 shows the possibility of fastening wire mesh to profile bars 2. For this purpose, according to the invention, threaded sleeves 25 with a corresponding external thread 20 are glued or crimped onto the ends of the wire bars 3 or 4 to be fastened, for example, onto which fixing elements 19 (e.g. sliding blocks) can then be attached. Depending on the fixing element 6, 10, 14, 15 or 19 used, the wire mesh can be attached both centrally and eccentrically in the profile groove 9 or in the hollow chamber 8. To fix the mesh element, the mesh bars 3 or 4 with the (in this example) screwed-on threaded sleeves 25 and the fixing element 19 are pushed into the groove 9 of the profile bar 2.

Claims (15)

1. Fastening of wire mesh or wire grids in grooves 9 of profile bars 1 or 2 with one or more concealed grooves or with grooves open on all sides, in which the grid element used itself functions as a fastening element and thus, for example, takes on the task of a clamping profile, characterized in that so-called fixing elements 6, 10, 14, 15 or 19 are applied to any number of ends of a wire grid 3 or 4. 2. Fastening of wire mesh or wire grids according to claim 1, characterized in that the fixing elements 6, 10, 14, 15 or 19 can be glued to the ends of the wire grid bars 3 or 4. 3. Fastening of wire mesh or wire grids according to claim 1 or 2, characterized in that the fixing elements 6, 10, 14, 15 or 19 can be pressed or squeezed onto the ends of the wire grid bars 3 or 4. 4. Fastening of wire mesh or wire grids according to one of claims 1 to 3, characterized in that the fixing elements 6, 10, 14, 15 or 19 can be welded onto the ends of the wire grid bars 3 or 4. 5. Fastening of wire fabrics or wire grids according to one of claims 1 to 4, characterized in that adapters or auxiliary elements 23 or 25 according to one of claims 1 to 4 are first applied to the ends of the wire grid bars 3 or 4, to which the fixing elements 6, 10, 14, 15 or 19 according to one of claims 1 to 4 are then fastened in a further work step. 6. Fastening of wire mesh or wire grids according to one of claims 1 to 5, characterized in that threads 5 are applied to the ends of the wire grid bars 3 or 4, onto which the corresponding fixing elements 6, 10, 14, 15 or 19 or adapters 23 or 25 are then screwed. 7. Fastening of wire mesh or wire grid according to one of claims 1 to 6, characterized in that a point-based fastening is possible. 8. Fastening of wire mesh or wire grids according to one of claims 1 to 7, characterized in that the wire grids can also be used in profile bars whose cross-section is not square or rectangular or whose sides are not at right angles to each other. 9. Fastening of wire mesh or wire grid according to one of claims 1 to 8, characterized in that this connection technique can be used independently of the manufacturer of the profile bar used. 10. Fastening of wire mesh or wire grid according to one of claims 1 to 9, characterized in that a connection between wire and profile bar can be made independently of the wire thickness, whereby the wire thickness must not exceed the width of the groove 9 of the profile bar. 11. Fastening of wire mesh or wire grids according to one of claims 1 to 10, characterized in that the number of rod ends 3 or 4 which are provided with a thread 5 or with a fixing element 6, 10, 14, 15 or 19 or an adapter can vary depending on the application, so that no unnecessary connections have to be created. 12. Fastening of wire mesh or wire grids according to one of claims 1 to 11, characterized in that the number of threads applied to the ends of the wire grid bars 3 or 4 varies depending on the fixing elements 6, 10, 14, 15 or 19 or adapters used. 13. Fastening of wire mesh or wire grid according to one of claims 1 to 12, characterized in that the threads 5 do not necessarily have to protrude from the groove 9 of the profile bar. 14. Fastening of wire mesh or wire grids according to one of claims 1 to 13, characterized in that different fixing elements 6, 10, 14, 15 or 19 or adapters (also combinations) can be used. 15. Fastening of wire mesh or wire grids according to one of claims 1 to 14, characterized in that the fixing elements 6, 10, 14, 15 or 19 or adapters are commercially available standard parts which are easy to obtain and can be used universally.