Fastening system having a keder

Abstract

The invention relates to a fastening system (1) for fastening a flexible sheet element (10), in particular a fabric web, a tarpaulin or the like, to a receiving profile (11), the sheet element (10) having a terminating edge (12) on which a keder (13) is provided, and the receiving profile (11) having a receiving channel (14) into which the terminating edge (12) with the keder (13) can be inserted. According to the invention, the keder (13) is in the form of a flexible tube (15) and has means for introducing a pressure medium into a pressure chamber (16) in the tube (15). According to the invention, the keder (13) is in the form of a flexible tube (14) and has means for introducing a pressure medium into a pressure chamber (16) in the tube (14). The invention also relates to a method for attaching a flexible sheet element (10) to a receiving profile (11) using such a fastening system (1).

Description

[0001] Kassel, September 29, 2025

[0002] Lawyer's file: MGO24149P1WO Official file number

[0003] NN

[0004] Applicant:

[0005] 1) Matthias Gomoluch

[0006] Burgstraße 38

[0007] 37235 Hess. Lichtenau

[0008] 2) Dr. Alexander Bayer

[0009] Hetjensstraße 36

[0010] 40472 Düsseldorf

[0011] Inventor:

[0012] Dr. Alexander Bayer

[0013] Hetjensstraße 36

[0014] 40472 Düsseldorf

[0015] Representative:

[0016] WALTHER PATENT

[0017] Walther ■ Bayer ■ Faber

[0018] Heimradstraße 2

[0019] 34130 Kassel, Germany

[0020] FASTENING SYSTEM WITH A SINGLE SIDE

[0021] The invention relates to a fastening system for fastening a flexible surface body, in particular a fabric web, a tarpaulin or the like, to a receiving profile, wherein the surface body has a finishing edge on which a keder is arranged, and wherein the receiving profile has a receiving groove in which the finishing edge with the keder can be inserted.

[0022] STATE OF THE ART

[0023] Fastening systems based on the use of a keder (seal) are typically used where fabric panels, such as sunshades, awnings, privacy screens, or similar items, or alternatively tarpaulins or other flexible sheet materials, need to be attached to a profile. The profiles designed for this purpose are usually extruded aluminum profiles with a groove that is longitudinally slotted towards the outside of the profile and has a neck section and a belly section that forms an undercut into which the keder is inserted.

[0024] The keder is usually sewn into a fold in the edge of the flexible tarpaulin, or it can be inserted laterally into a pocket formed by the folded-over section along the edge. However, this task is often difficult for one person to perform alone, as one person must push the edge of the tarpaulin, with the folded-over section, through the neck (the open slot) into the pocket, while a second person pushes the keder in from the side. This method of installing the keder to attach a flexible tarpaulin to a mounting profile is therefore unergonomic and time-consuming. Many fastening systems are required, especially for larger tarpaulins, such as those used on commercial vehicles, but also in boatbuilding, camping applications, or for installing nets.

[0025] For example, EP 3 348 740 B1 shows a fastening system for attaching the fabric of an awning to an end profile. This system uses a keder (seam) that is embedded in the end edge of the fabric, and the keder is threaded into a receiving groove in the end profile with the resulting fold of the end edge. The application shown here does not require the flexible fabric to be regularly removed from the receiving profile (the awning roller). However, other applications exist, for example, with the tarpaulin of a truck body, which must be regularly detached from and reattached to a receiving profile, typically using a number of tension straps.

[0026] REVELATION OF THE INVENTION

[0027] The object of the invention is to improve a fastening system for attaching a flexible sheet, for example a fabric panel or tarpaulin, to a receiving profile, such that the sheet can be attached to the receiving profile with a finishing edge along a fastening path and can also be easily removed from it. The fastening of the sheet should be simple, even over a longer length of the receiving profile, and preferably can be carried out by a single person. Furthermore, the fastening system should be as simple as possible and comprise a minimal number of individual parts. In particular, the principle of the keder in a receiving groove for fastening the sheet should be improved to enable simple assembly and, above all, simple disassembly of the sheet to and from the receiving profile.

[0028] This problem is solved starting from a fastening system according to the preamble of claim 1 and starting from a method according to the preamble of claim 11, each with the characterizing features. Advantageous embodiments of the invention are specified in the dependent claims.

[0029] The invention includes the technical teaching that the welt is formed by means of a flexible hose and has means for pressurizing a pressure chamber in the hose with a pressure medium. The core concept of the invention is a welt that is essentially formed from a flexible hose, wherein the flexibility of the hose refers to the material of the hose and describes both its pliability and its extensibility in diameter. If the pressure chamber of the hose is not pressurized, the welt is flexible and deformable and can therefore be pressed laterally into the receiving groove along the entire length of the receiving profile, even if the welt is still inserted in the end edge of the surface body and remains attached to it by being sewn into the end edge or...is inserted laterally into this and remains in it, even when the surface body is attached to the receiving profile and is repeatedly removed.

[0030] The keder, with its end edge of the flat body, can be easily pressed into and removed from the receiving groove as often as desired along the entire length of the receiving profile. Once inserted into the receiving groove, the keder can be pressurized. This causes the keder to either become sufficiently rigid to prevent it from slipping out of the groove, or it expands in diameter, essentially "breathing" with the internal pressure of the pressure chamber. This creates tension, particularly with the flat body, within the receiving groove. When the flexible hose is pressurized, force can then be applied to the flat body, preventing the end edge of the flat body and the keder from being removed from the receiving groove due to the increased pressure.Only once the pressure chamber of the flexible hose has been vented can the keder, and thus the edge of the panel, be removed from the groove. As a result, the time-consuming process of threading the keder into the edge of the panel within the groove is eliminated. This means that even with very long keders, one person can simply push the keder laterally into the groove and then pressurize it, for example, with an air pump or similar device. With a suitable choice of material for the flexible hose, its diameter can increase, and the panel can withstand high forces, such as wind forces in the case of an awning, without separating from the mounting profile.

[0031] The flexible tube used to form the bead can be designed such that, when the pressure chamber within the tube is pressurized, it increases in diameter and / or stiffness. The structure of the flexible tube can resemble a bicycle inner tube, and, according to the invention, the tube used to form the bead is flexible enough to "breathe" to a certain extent, depending on the pressure of a pressure medium in the pressure chamber, for example, compressed air.

[0032] If the flexible hose material is elastic, the hose can increase in diameter and become compressed within the groove of the mounting profile by increasing its diameter and pressing against the inner contour of the groove. However, it is also possible that the flexible hose does not necessarily increase in diameter, but merely in stiffness, especially if a liquid, such as water, is used as the pressure medium.Even then, the elastic properties of the flexible hose can change such that, when the pressure chamber is emptied, the flexible hose can be pressed into the receiving groove by hand and remains self-retaining in the groove. Only after pressurization with a liquid or gaseous medium does the rigidity of the flexible hose become sufficient to reliably prevent it from slipping out of the receiving groove. It is therefore advantageous that the bead also possesses a minimum rigidity when not pressurized, similar to a garden hose, so that once pressed into the receiving groove, the bead remains self-retaining without significant forces acting on the surface.This makes assembly easier for one operator, and once the keder is inserted into the receiving groove along its entire length, pressure can be applied.

[0033] The flexible hose can be made of a material including rubber, elastomer, silicone, or a woven fabric. Without pressurization, the diameter of the flexible hose can be chosen to be small enough that, when positioned within the edge of the surface body, it can be easily pressed into the receiving groove. Only after pressurization does the flexible hose, with its stiffness and / or diameter, assume values ​​that prevent it from slipping out of the receiving groove. A standard rubber hose can be sufficient to form the flexible hose; however, it should be robust enough to be threaded or sewn into the folded section at the edge of the surface body at least once, from an open end.

[0034] The flexible hose can be encased in the folded section of the flat body, with the folded section forming a fold by sewing it to the rest of the flat body. The seam runs along the finished edge and can encase the welt tightly enough so that it remains self-retaining in the folded section, while still allowing the welt to expand to a larger diameter due to the pressure exerted by the folded section.

[0035] The means for filling and emptying the pressure chamber with a pressure medium can include at least one valve. The valve can be designed, for example, like a bicycle or car valve, and a simple pressure-generating device, such as an air pump, can be attached to the valve to pressurize the bead with the pressure medium.

[0036] The valve is preferably located at the end of the keder, for example in the form of an end cap that closes and seals the flexible hose. The valve may also include means for easily venting the pressure chamber of the flexible hose. In particular, the valve may be manually operated.

[0037] Furthermore, it is conceivable that the welt incorporates a pressure monitoring device with which the pressure in the pressure chamber within the hose can be monitored. Valves incorporating a pressure monitoring device are already known in the automotive sector, meaning that the pressure monitoring device and the welt's valve can be integrated into a single unit. In this respect, the welt comprises at least the flexible hose, the valve, and the pressure monitoring device. If a flexible hose is manufactured from a length of material, a rear end can be closed by a cap, which is, for example, glued or pressed into the hose, and a front end of the welt, accessible to a person, includes the valve, which also closes the front end in the form of a cap, a lid, a plug, or the like.

[0038] As an example, the use of the fastening system according to the invention for truck tarpaulins is highlighted. These tarpaulins can be attached to the vehicle frame, which forms the mounting profile, on their underside using the fastening system according to the invention. This provides an attractive alternative to the numerous tensioning straps that use tensioning devices to secure the side tarpaulins of the cargo area from below. Furthermore, a variant based on the keder according to the invention for the underside fastening of a truck tarpaulin is aerodynamically advantageous and therefore saves fuel and reduces CO2 emissions.

[0039] The keder, and consequently the end edge, can be pressed into the mounting profile. A person can then use an end-accessible valve to pressurize the pressure chamber of the flexible tube. This ensures secure fastening of the truck tarpaulin described above along the entire length of the cargo area. To open the tarpaulin, simply release the pressure from the pressure chamber, and the keder, and therefore the truck tarpaulin forming the flexible sheet, can be easily removed from the mounting groove of the profile, for example, for loading or unloading the cargo area.

[0040] The intake groove can have a neck section and a belly section in its profile, wherein the neck section has a passage width that is smaller than a cross-sectional dimension of the belly section and / or wherein the cross-sectional dimension increases with increasing distance from the neck section. In other words, the intake groove can open inwards with increasing depth, wherein the belly section of the intake groove can have a circular cross-section that opens on one side towards the neck section and merges into it. In particular, the neck section can transition into the belly section in a trapezoidal shape and form inner slopes that create a region opening towards the belly section.If the keder, positioned in the folded-over section of the edge of the sheet, is pressed into the receiving groove and the pressure chamber is pressurized with compressed air, the keder can penetrate deeper into the receiving groove as the pressure in the chamber increases. This is because the diameter of the flexible hose continues to increase, and thus the keder moves further towards the increasing cross-sectional area of ​​the sheet. In particular, the keder moves along the inner slopes into the deeper opening. With a suitable keder design, this has the effect that, with increasing pressure, even a rigid sheet can be tensioned on the sheet, for example, when the sheet forms the tarpaulin of a truck.

[0041] The mounting profile can also be formed by means of two sheet metal elements, or alternatively, the mounting groove can be formed between two sheet metal elements that are angled towards each other. For example, the mounting profile can be formed on the loading edge of a truck without the need for a separate profile with a neck section and a belly section for the keder mounting.

[0042] It is also conceivable to provide a manually operated insertion element for the welt. This insertion element has a guide section that is drawn into the receiving groove, and it also has a insertion section for the welt to draw it into the receiving groove. Furthermore, the insertion element can have a handle by which the operator pulls the insertion element along the receiving profile through the receiving groove, thus easily drawing the welt into the receiving groove along its entire length. Such insertion elements are already known, for example, for cable conduits made of elastic lamellae into which several cables can be drawn simultaneously, such as for enclosing computer cables in an office.

[0043] The invention further relates to a method for attaching a flexible flat body to the receiving profile with a fastening system as shown above, wherein the method comprises at least the following steps: parallel positioning of the end edge of the flexible flat body to the receiving groove of the receiving profile, lateral pressing of the end edge with the keder into the receiving groove of the receiving profile and pressurizing the pressure chamber of the flexible hose forming the keder by means provided for this purpose.

[0044] By pressurizing the pressure chamber within the flexible hose, the diameter can be increased, but alternatively or additionally, the stiffness of the hose can also be increased. In particular, a positive-locking connection of the keder in the receiving groove creates a force-resistant connection between the flexible flat body and the receiving profile. The stiffness of the hose refers specifically to the resistance the hose offers to deformation of its cross-section due to external forces.

[0045] The filling and emptying of the pressure chamber with a pressure medium can be carried out via at least one valve of the keder by attaching a pressure generating device to the valve, for example an air pump or a pressure hose of a pressure system, which is present on the vehicle side of large commercial vehicles, for example.

[0046] The receiving groove of the receiving profile can form internal slopes, creating an area that opens towards the belly section. When the flexible hose is pressurized, its diameter increases and moves deeper into the belly section of the receiving groove, thereby tensioning the flexible material. The receiving profile can have a sufficient height to allow the receiving groove to be deep enough to ensure tensioning of the flexible material, such as a truck tarpaulin.

[0047] To detach the flexible surface body from the receiving profile, the flexible hose can first be vented and the end edge of the flexible surface body pulled laterally out of the receiving groove in which or on which the welt is arranged. In this way, using the inventive method and the inventive fastening system, a flexible surface body can be quickly attached to and detached from a profile without the need for the time-consuming process of threading a welt from one end into the folded section, i.e., the fold, of the surface body.

[0048] PREFERRED EXAMPLE OF THE INVENTION

[0049] Further measures improving the invention are described in more detail below, together with a description of a preferred embodiment of the invention, with reference to the figures. The figures show:

[0050] Figure 1 shows a schematic view of the fastening system with a flexible surface body and a receiving profile, where the surface body and the receiving profile are shown separately.

[0051] Figure 2 shows the view of the fastening system with the elements according to Figure 1, while the flexible surface body is pressed with its end edge into the receiving groove of the receiving profile,

[0052] Figure 3 shows the fastening system with the keder arranged within the receiving groove of the receiving profile before the keder is pressurized.

[0053] Figure 4 shows the view of the keder in arrangement within the receiving groove after the keder has been pressurized, so that the form-fitting connection between the flexible surface body and the receiving profile is created.

[0054] Figure 5a shows another embodiment of a welt with a valve before pressurization.

[0055] Figure 5b shows the view of the keder according to Figure 5a after pressure application.

[0056] Figure 6 shows a close-up view of the keder with a flexible hose, a valve and a pressure monitoring device.

[0057] Figure 1: An example of an application of the fastening system according to the invention in conjunction with a truck comprising side tarpaulins; Figure 8: Another application example of the fastening system using an awning that is attached to the roof edge of a vehicle.

[0058] Figure 9 shows a perspective view of an insertion element for inserting the keder into a receiving groove.

[0059] Figure 10 shows a half-section view of the inset element according to Figure 9 and

[0060] Figure 11 shows the view of the truck according to Figure 7, in which a insertion element is used to insert the keder onto a tarpaulin forming the flexible surface element.

[0061] Figure 1 schematically shows the arrangement of the fastening system 1 with the features of the present invention. The fastening system 1 serves to create a form-fitting connection between a flexible sheet body 10, for example a fabric panel, a tarpaulin, a sunshade, an awning, or the like, and a receiving profile 11, which can be easily produced via a longer end edge of the sheet body to the profile. For this purpose, the receiving profile 11 has a receiving groove 14, which is formed with an upper neck section 14a and a lower belly section 14b, wherein the receiving groove 14 widens from the neck section 14a further into the belly section 14b, thus forming a transverse dimension that becomes larger, at least in sections, with increasing depth.

[0062] The flexible surface body 10 is bounded by a finishing edge 12, which is formed by a folded section, in particular by a fold 20, and a welt 13 is inserted into the fold 20. The seam 21 allows the welt 13 to remain in the folded section, and with the features according to the invention, as shown by the arrow, the welt 13 can be drawn laterally into the receiving groove 14 of the receiving profile 11 on the flexible surface body 10 without having to thread the welt into the folded section from an open side.

[0063] For this purpose, the bead 13 is essentially formed from a flexible hose 15 which has an internal pressure chamber 16. In order to pull the bead 13 and consequently the end edge 12 into the receiving groove 14, the pressure chamber 16 is depressurized, in particular vented.

[0064] Figure 2 shows the arrangement according to Figure 1 at the moment the welt 13 is drawn into the receiving groove 14 of the receiving profile 11 with its end edge 12 of the surface body 10. Due to the lack of pressure on the pressure chamber 16 of the welt 13, it is elastic, and the elastic deformation of the welt 13 makes it clear that the welt 13 can be drawn into the receiving groove 14 with its end edge 12, for example manually or with a drawing aid.

[0065] Figure 3 shows the state of the fastening system 1 with the welt 13 within the receiving groove 14, whereby the pressure chamber 16 of the welt 13 is not yet pressurized at this stage. Nevertheless, the welt 13 can already remain self-retaining in the receiving groove 14 due to the smaller passage width B of the neck section relative to the transverse dimension Q of the belly section, even though it is not yet possible to apply force to the surface body 10 without pressurizing the pressure chamber 16.

[0066] The inner contour of the receiving groove 14 makes it clear that, due to the smaller passage width B relative to the transverse dimension Q, the receiving groove 14 has an inward widening into which the bead 13 can slide when the pressure chamber 16 of the bead 13 is pressurized and the diameter of the bead 13 increases.

[0067] Figure 4 shows the welt 13 with the flexible hose 15 and the pressure chamber 16 in a pressurized state, resulting in a correspondingly increased diameter d of the welt 13. The welt 13 essentially fills the entire belly section of the receiving groove 14, and compared to Figure 3, it is evident that the surface body 10 has been pulled further towards the receiving profile 11. This effect makes it possible to tension the surface body 10 by pressurizing the pressure chamber 16 of the welt 13, which can be advantageous, for example, in truck tarpaulins or sunshades to prevent wrinkling in the surface body 10.

[0068] Figures 5a and 5b each show a bead 13 within the receiving groove 14. In Figure 5a, the flexible hose 15 is not yet pressurized, while Figure 5b shows the flexible hose 15 of the bead 13 in a pressurized state, so that it assumes the increased diameter d. In this way, the flexible surface body 10 can be positively connected to the receiving profile 11. The valve 17 serves to pressurize and maintain the pressure; for example, a hand-operated pump or a compressed air hose can be connected to it.

[0069] Figure 6 shows a schematic view of the keder 13 with the flexible hose 15 and the valve 17 attached to the front, wherein, by way of example, the keder 13 has a pressure monitoring means 19 to enable, for example, monitoring of the internal pressure of the hose 15 from an external position and to ensure and monitor the secure connection of the surface body 10 to the receiving profile 11 according to Figures 5a and 5b.

[0070] Figure 7 shows an example of the application of the fastening system 1 on a truck 100 according to the invention. If the flat body 10 in the form of the truck tarpaulin is to be attached to the receiving profile 11, the end edge 12 can first be pressed or pulled into the receiving groove 14 of the receiving profile 11 by hand, and then the keder 13 can be pressurized via a valve (not shown) so that a fixed arrangement of the flat body 10 on the receiving profile 11 is achieved.

[0071] Figure 8 shows another embodiment of an application of the fastening system 1 for a canopy 22, which is attached to the roof edge 23 of a vehicle. Here, too, the keder 13 with the flexible hose 15 and the inner pressure chamber 16 can be used, as shown in the enlarged view. The keder 13 is already located in the receiving groove 14, with the roof edge 13 forming the receiving profile 11. The surface body 10 is also shown and forms the end edge 12 within which the keder 13 is enclosed. Thus, the keder 13 shown here can also be manually pressed into the receiving groove 14. Subsequently, an operator can easily pressurize the keder 13 to achieve a secure attachment of the canopy 22 to the vehicle.

[0072] Figures 9 and 10 show a perspective view and a cutaway view, respectively, of a guide element 24 for drawing a welt 13 into a receiving groove 14, which may be formed, for example, by or in the area of ​​the loading edge of a truck. The guide element 24 has a guide section 25 that is drawn into the receiving groove 14 of the receiving profile 11 or is guided longitudinally within it. Furthermore, the guide element 24 has a guide section 26 for the welt 13, in order to draw the welt 13 into the receiving groove 14. The guide element 24 also has a welt tunnel 27 that extends through the guide element 24 from an upper opening 28 to a lower snorkel section 29.

[0073] Furthermore, the insertion element 24 can have a handle 30 by which an operator can move the insertion element 24 along the receiving profile 11 by pulling the insertion element 24 through the receiving groove 14, while thereby the keder 13 can be easily inserted into the receiving groove 14 over the entire length of the receiving profile 11.

[0074] Figure 11 shows the truck 100 according to Figure 7 with the application of the insertion element 24. If this is pulled by hand along the receiving profile 11 in the direction of the arrow shown, the keder 13 at the lower end of the flexible surface body 10 can be inserted into the receiving groove 14 of the receiving profile 11.

[0075] The keder 13 can already possess sufficient elastic strength or dimensional stability to remain self-retaining in the receiving groove 14 even without pressurization. Once the keder 13 has been fully drawn into the receiving groove 14, i.e., the insertion element 24 is located at the rear end of the receiving profile 11, the keder 13 can be pressurized via the valve 17 described above, for example at fixed position X. This causes it to inflate, drawing itself deeper into the receiving groove 14, as shown in Figures 3 and 4. This not only secures the tarpaulin (the flat body 10) firmly to the receiving profile 11 but also tensions the tarpaulin itself. This eliminates the need for the numerous individual straps with buckles commonly used to secure the tarpaulin to the loading edge.With the solution according to the invention, the tarpaulin can be attached to the loading edge more quickly and easily, and the air resistance, which is currently very high due to the numerous individual straps with buckles, can be significantly reduced. This can produce a similar effect to the substitution of exterior mirrors with cameras, which has become standard on trucks.

[0076] The Keder 13 can also be automatically pressurized via a valve, for example at position X, for example by pushing a button, and a pressure switch can also be installed to ensure that the pressure in the Keder 13 does not fall below a minimum value.

[0077] The invention is not limited in its implementation to the preferred embodiment described above. Rather, a number of variants are conceivable, which utilize the solution presented even in fundamentally different designs. All features and / or advantages arising from the claims, the description, or the drawings, including design details or spatial arrangements, can be essential to the invention, both individually and in various combinations. List of reference numerals:

[0078] I fastening system

[0079] 10 flexible surface body II mounting profile

[0080] 11a Sheet metal element

[0081] 11b Sheet metal element

[0082] 12 End edge

[0083] 13 Keder

[0084] 14 recordings

[0085] 14a Neck section

[0086] 14b Abdominal section

[0087] 15 flexible hose

[0088] 16 printing chamber

[0089] 17 valve

[0090] 18 opening area

[0091] 19 Pressure monitoring equipment 20 Fold

[0092] 21st seam

[0093] 22 Canopy

[0094] 23 Roof edge

[0095] 24 Inset element

[0096] 25 Leadership section

[0097] 26 Entry section

[0098] 27 Keder tunnel

[0099] 28 Mouth opening

[0100] 29 Snorkel section

[0101] 30 handles 100 trucks

[0102] d Through improvement

[0103] B Passage width Q Cross dimension

[0104] X position for valve

Claims

Claims:

1. Fastening system (1) for fastening a flexible surface body (10), in particular a fabric sheet, a tarpaulin or the like, to a receiving profile (11), wherein the surface body (10) has a finishing edge (12) on which a keder (13) is arranged, and wherein the receiving profile (11) has a receiving groove (14) in which the finishing edge (12) with the keder (13) can be inserted, characterized by that the keder (13) is formed by means of a flexible hose (15) and has means to pressurize a pressure chamber (16) in the hose (15) with a pressure medium.

2. Fastening system (1) according to claim 1 , characterized by that the flexible hose (15) is designed such that when the pressure chamber (16) in the hose (15) is pressurized, its diameter (d) and / or its stiffness increases.

3. Fastening system (1) according to claim 1 or 2, characterized by that the flexible hose (15) comprises a material comprising a rubber material, an elastomer, a silicone or a woven material.

4. Fastening system (1 ) according to one of claims 1 to 3, characterized in that the flexible hose (15) is enclosed in a folded section, in particular a fold (20) of the flat body (10) which forms the end edge (12).

5. Fastening system (1) according to one of the preceding claims, characterized by, that the means for filling and emptying the pressure chamber (16) with a pressure medium comprises at least one valve (17).

6. Fastening system (1) according to one of the preceding claims, characterized by, that the keder (13) has an end area in which the valve (17) is arranged.

7. Fastening system (1) according to one of the preceding claims, characterized by, that the recording groove (14) in the recording profile (11) has a neck section (14a) and a belly section (14b), wherein the neck section (14a) has a passage width (B) that is smaller than the transverse dimension (Q) of the belly section (14b) and / or wherein the transverse dimension (Q) continues to increase with increasing distance to the neck section (14a).

8. Fastening system (1) according to any one of claims 1 to 6, characterized by, that the receiving profile (11) is formed by means of two sheet metal elements (11a, 11b) and / or the receiving groove (12) is formed between two sheet metal elements (11a, 11b) which are angled towards each other.

9. Fastening system (1) according to claim 7 or 8, characterized by that the neck section (14a) transitions into the abdominal section (14b) in a trapezoidal shape and forms internal slopes from which an area (18) opening towards the abdominal section (14b) is created.

10. Fastening system (1) according to one of the preceding claims, characterized by, that an insertion element (24) is provided with which the keder (13) or the end edge (12) can be inserted into the receiving groove (14) of the receiving profile (11) with the keder (13).

11. Fastening system (1) according to claim 10, characterized by that the insertion element (24) has a guide section (25) which is inserted in the receiving groove (14) and wherein the insertion element (24) has an insertion section (26) for the insertion of the welt (13) in order to insert the welt (13) in particular with the end edge (12) into the receiving groove.

12. Method for attaching a flexible surface body (10) to a receiving profile (11) with a fastening system (1) according to one of the preceding claims, wherein the method comprises at least the following steps: - parallel positioning of the end edge (12) of the flexible surface body (10) to the receiving groove (14) of the receiving profile (11 ), - pressing the end edge (12) laterally with the keder (13) into the receiving groove (14) of the receiving profile (11) or pulling the end edge (12) with the keder (13) in using the pulling element (24) and - Pressurization of the pressure chamber (16) of the flexible hose (15) forming the keder (13) via means provided for this purpose.

13. Method according to claim 12, characterized by that by pressurizing the pressure chamber (16) in the flexible hose (15) the diameter (d) and / or the stiffness of the hose (15) is increased and in particular a force-resistant connection of the flexible surface body (10) with the receiving profile (11) is created by a positive locking connection of the keder (13) in the receiving groove (14).

14. Method according to claim 12 or 13, characterized by that the filling and emptying of the pressure chamber (15) with a pressure medium is carried out via at least one valve (17) of the keder (13) by attaching a pressure generating device to the valve (17).

15. Method according to any one of claims 12 to 14, characterized by that the receiving groove (14) of the receiving profile (11) forms inner slopes from which a region (18) opening towards the belly section (14b) is created, wherein when pressure is applied to the flexible hose (15), the diameter of the hose (15) increases and migrates deeper into the belly section (14b) of the receiving groove (14), thereby tensioning the flexible surface body (10).

16. Method according to one of claims 12 to 15, characterized by that to release the flexible surface body (10) from the receiving profile (11) the flexible hose (15) is vented and the end edge (12) of the flexible surface body (10) is pulled laterally out of the receiving groove (14).

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