Fastening system for fastening a cladding panel to a c-profile rail and method for fastening the cladding panel with the fastening system

Abstract

In order to secure a cladding panel (21) to a C-profile rail (24), the invention proposes a first and second fastener (1, 14), each of which has a sheet metal strip that is bent into a U-shaped bracket (8). The second fastener (14) has a hammer head (15) on a flange bracket (18) and is rotatably secured in an anchoring hole on the rear face (22) of the cladding panel (21) by means of an undercut anchor (13). By moving the cladding panel (21) transversely to the C-profile rail (24), the hammer head (15) is brought into engagement behind the C-profile rail (24), thereby securing the cladding panel (21) to the C-profile rail (24).

Description

[0001] The invention relates to a fastening system for attaching a facade panel to a C-profile rail with the features of the preamble of claim 1 and a method for attaching the facade panel with the fastening system with the features of the preamble of claim 10.

[0002] C-profile rails have a generally rectangular cross-section and a continuous longitudinal slot on one side, allowing for fastening with hammerhead screws and similar fasteners. On the opposite side, C-profile rails typically feature elongated and round holes arranged in a longitudinal direction for attaching the rail to, for example, an exterior wall of a building.

[0003] Fastening systems for attaching facade panels to a profile rail are known. For example, patent EP 0 979 334 B1 discloses a fastening system with a hollow profile that is horizontally attached to a supporting structure on a building wall. A horizontally extending web projects upwards from the hollow profile, onto which an L-profile is suspended. The vertical leg of the L-profile rests against the hollow profile, and a facade panel is attached to the L-profile by means of an undercut anchor. Another fastening system is known from patent KR 101 751 888 B1. This system comprises spaced-apart rails, each rail having two angle-shaped fasteners. A facade panel can be mounted between the fasteners. A further fastening system is also known from patent application US 2021 / 131121 A1.The system is used to fasten decking boards and includes specially shaped brackets that engage in slots in the decking boards.

[0004] The object of the invention is to propose a fastening system for attaching a facade panel to a C-profile rail that does not require special profiles and in which the fastening of the facade panel is easy to handle. A further object of the invention is the fastening of a facade panel to a C-profile rail using the fastening system.

[0005] These problems are solved according to the invention by the features of claims 1 and 10. The fastening system according to the invention comprises a fastener, a facade panel, and an anchor, in particular an undercut anchor. A C-profile rail is part of a further development of the invention. The facade panel is fastened to the fastener by means of the anchor. The anchor is fastened in an anchor hole in a back side of the facade panel, the back side being a side of the facade panel facing the fastener and thus also the C-profile rail and a facade, building exterior wall, or the like. The back side is a side of the facade panel opposite a visible side, the visible side being a visible side of the facade panel when the facade panel is fastened to the facade, building exterior wall, or the like of a building for cladding purposes. The anchor hole is in particular a blind hole in which the anchor is fastened or anchored.The anchor hole or blind hole may have an undercut.

[0006] In particular, the anchor is an undercut anchor which is spread out in the blind hole having an undercut, which is installed in the back of the facade panel and is thereby anchored in the facade panel.

[0007] Furthermore, the anchor is attached to the fastener, thus connecting the facade panel to the fastener and securing the fastener to the back of the facade panel.

[0008] The fastener features a hammerhead element for attaching the facade panel to the C-profile rail. Viewed from one side, the hammerhead element has a T-profile, with one cross-section of the "T" forming the head or hammerhead of the element. This head can be inserted into the C-profile rail through the longitudinal slot, either oriented along the length of the rail or at an angle. If the hammerhead is positioned transversely or at an angle within the C-profile rail, it engages the rail on both sides of the longitudinal slot. This positive locking action prevents it from being pulled out of the C-profile rail perpendicular to the side of the C-profile rail containing the longitudinal slot, thus enabling the fastener to secure the facade panel to the C-profile rail.

[0009] In one embodiment of the invention, the fastening system comprises a first fastener, which has a U-shaped bracket with two flanges and a web connecting the two flanges. The two flanges are located on the same side of the web connecting them and preferably at right angles or approximately right angles to the web at the ends of the web. Here, two legs or sides of the U-shaped bracket are referred to as "flanges," and the side connecting the two flanges, a yoke, or a central part of the U-shaped bracket is referred to as the "web" of the U-shaped bracket. The anchor, in particular the undercut anchor, is preferably rotatably attached to the web of the first fastener by means of a ring fitting about an axis perpendicular to the web. The ring fitting is preferably made of a metal, in particular steel, or of a plastic.A steel ring is preferred because it is significantly more stable and consequently exhibits less wear. Furthermore, the U-shaped bracket, which forms the first fastener of this embodiment of the invention or is part of the first fastener, has a support that rests against an outer surface of the side of the C-profile rail having the longitudinal slot when the fastener is attached to the C-profile rail as intended. The support is, for example, strip-shaped or rib-shaped and projects from the end of a first of the two flanges furthest from the web, parallel to the web of the first flange of the U-shaped bracket of the fastener, on a side facing away from a second of the two flanges. Thus, the support projects from a side of the first flange opposite the web with a parallel offset to the web.The first fastener does not require any further fasteners; in this embodiment of the invention, the fastening system can comprise the first fastener as the only fastener, several first fasteners, or one or more first fasteners and optionally one or more further fasteners.

[0010] A further development of the invention provides a mounting hole in the support for a hammerhead fastener, which in this embodiment forms the hammerhead element of the fastener for attaching the fastener to the C-profile rail. The hammerhead fastener is attached to or in the mounting hole in the support of the U-shaped bracket of the first fastener and has, for example, a hammerhead screw, a rectangular nut, or a parallelogram nut as its hammerhead.

[0011] According to the invention, the fastening system comprises a second fastener with a U-shaped bracket having two flanges and a connecting web. In the second fastener, the anchor, in particular the undercut anchor, is preferably rotatably attached to the connecting web of the second fastener via a ring fitting about an axis perpendicular to the connecting web. Here too, the ring fitting is preferably made of a metal, in particular steel, or of a plastic. For further details regarding the U-shaped bracket, reference is made to the description of the U-shaped bracket of the first fastener. A first of the two flanges of the U-shaped bracket of the second fastener has a hammerhead, which forms the hammerhead element of the second fastener.Viewed from one side of the first flange, the first flange has a T-profile, which can be formed, for example, by the first flange being strip-shaped or rib-shaped and having two recesses opposite each other on two longitudinal sides of the first flange. The hammerhead can be inserted into the C-profile rail through the longitudinal slot when the hammerhead is aligned longitudinally or obliquely to the longitudinal direction of the C-profile rail. Within the C-profile rail, the hammerhead is aligned transversely to the C-profile rail, thereby engaging the C-profile rail internally on both sides of its longitudinal slot and holding the second fastener in the C-profile rail perpendicular to the side of the C-profile rail containing the longitudinal slot by means of a positive fit of the hammerhead. This embodiment of the invention does not require the first fastener, as will be further illustrated by an exemplary embodiment of the invention.However, it preferably has one or more first fasteners and one or more second fasteners.

[0012] In one embodiment of the invention, a second of the two flanges of the second fastener has a projection that is narrower, or at least no wider, than the width of the longitudinal slot of the C-profile rail. This projection forms two shoulders on either side of the projection on the second flange of the second fastener. These shoulders are placed on the outer side of the C-profile rail, which has the longitudinal slot, for the purpose of fastening the second fastener to the C-profile rail. The projection then engages in the longitudinal slot of the C-profile rail and holds the second flange of the second fastener in the longitudinal slot of the C-profile rail, perpendicular to the C-profile rail, by means of a positive fit.

[0013] The U-shaped brackets of the fasteners are designed such that their webs are parallel to the C-profile rail and equidistant from the side of the C-profile rail containing the longitudinal slot when the fasteners are attached to the C-profile rail as intended. The webs of the fasteners, to which the back of the facade panel is attached with an anchor, are located in a plane parallel to the C-profile rail at a distance from the side of the C-profile rail containing the longitudinal slot when the fasteners are attached to the C-profile rail as intended.

[0014] If the hammerhead of the second fastener is inserted into the C-profile rail through its longitudinal slot and aligned transversely to the C-profile rail such that it engages the inside of the C-profile rail on both sides of the longitudinal slot, the hammerhead forms a pivot joint with a transverse axis around which the second fastener can pivot. By pivoting the second fastener around this transverse axis, the distance between its second flange and the C-profile rail can be changed. This distance can be increased so that its extension can be moved transversely to the C-profile rail, extending over the side of the C-profile rail containing the longitudinal slot.This allows the extension of the second flange to be aligned with the longitudinal slot of the C-profile rail and, by (opposite) pivoting of the second fastener, the second flange of the second fastener can be placed on the outside of the side of the C-profile rail having the longitudinal slot, such that the extension of the second flange engages in the longitudinal slot of the C-profile rail and is held in the longitudinal slot transverse to the C-profile rail by positive locking.

[0015] In preferred embodiments of the invention, the fastener(s) are rotatably attached to the back of the facade panel. The axes of rotation are preferably perpendicular to the back of the facade panel. Preferably, the fasteners are rotatably mounted on anchors that are embedded in the back of the facade panel.

[0016] One embodiment of the invention provides that the anchor can be arranged on the fastener at various points offset from one another in the longitudinal direction, or that it can be adjusted in the longitudinal direction of the fastener. The latter is possible, for example, by means of an elongated hole in the web of the fastener and applies in particular to the first fastener described as well as to the second. This embodiment allows the fastener to be positioned in its longitudinal direction on the back of the facade panel; for example, the edge distance of the fastener from an edge of the facade panel can be adjusted.

[0017] One embodiment of the invention provides that one or more first fasteners and one or more second fasteners are attached to the rear of the facade panel. The first fastener(s) are spaced apart from the second fastener(s) along the longitudinal direction of the C-profile rail. If several first fasteners and several second fasteners are attached to the rear of the facade panel, the first fasteners are spaced apart perpendicular to the C-profile rail, and the second fasteners are spaced the same perpendicular to the C-profile rail, such that the facade panel can be attached to two C-profile rails arranged parallel to each other in the same plane and spaced apart, for example, on a building wall. The distances between the first fasteners and the second fasteners can vary.

[0018] The method according to the invention, with the features of claim 11, is directed towards fastening the facade panel to the C-profile rail using the fastening system according to the invention as described above. To fasten the facade panel to the C-profile rail, the second fastener is rotated on the rear side of the facade panel so that its first flange with the hammerhead is positioned longitudinally or obliquely to the C-profile rail. The facade panel is positioned with its rear side facing the C-profile rail, and the facade panel is brought close to the C-profile rail such that the hammerhead on the first flange of the second fastener, which is rotatably attached to the rear side of the facade panel, enters the C-profile rail through the longitudinal slot.By moving the facade panel perpendicular to the C-profile rail, the second fastener, whose hammerhead is located in the C-profile rail and therefore does not move perpendicular to the C-profile rail, is rotated both on the back of the facade panel and relative to the C-profile rail such that the hammerhead positions itself perpendicularly within the C-profile rail and engages behind the C-profile rail on both sides of its longitudinal slot. This engagement with the C-profile rail allows the hammerhead to hold the facade panel against the first flange of the second fastener, perpendicular to the side of the C-profile rail containing the longitudinal slot.

[0019] When the hammerhead of the second fastener is inserted into the C-profile rail, and before or during the movement of the facade panel perpendicular to the C-profile rail to rotate the second fastener, the facade panel is pivoted about a transverse axis to the C-profile rail at the hammerhead of the second fastener. This pivoting action reduces the distance between the first fastener on the back of the facade panel and the C-profile rail, allowing the extension on the second flange of the second fastener to move perpendicular to the C-profile rail. In other words, the facade panel is tilted slightly towards the C-profile rail on the side of the first fastener. During the movement of the facade panel perpendicular to the C-profile rail to rotate the second fastener, the second fastener is positioned on the back of the facade panel perpendicular to the C-profile rail so that its extension is located above or in front of the longitudinal slot in the C-profile rail.The facade panel, with the two fasteners on its back, is then pivoted around its transverse axis to the C-profile rail at the hammerhead of the second fastener so that the extension on the second flange of the second fastener enters the longitudinal slot of the C-profile rail and the second flange of the second fastener comes to rest against the outside of the C-profile rail's slotted side. In other words, the facade panel is tilted back into its intended position. The extension on the second flange of the second fastener, engaging in the longitudinal slot of the C-profile rail, secures the facade panel against movement perpendicular to the C-profile rail by means of a positive locking mechanism. The two fasteners hold the facade panel parallel to the C-profile rail at a distance from it.

[0020] After the extension enters the longitudinal slot of the C-profile rail, the first fastener is preferably rotated relative to the facade panel and then attached to the C-profile rail with its hammerhead element. Before rotation, the shape of the first fastener provides space within the C-profile rail, allowing the facade panel to be tilted towards the C-profile rail on the side of the first fastener, as described.

[0021] The invention is explained in more detail below with reference to two exemplary embodiments illustrated in the drawings. The drawings show: Figure 1 shows a first fastener of a fastening system according to the invention in a perspective view; Figure 2 shows a variant of the first fastener according to the invention in a perspective view; Figure 3 shows a second fastener of the fastening system according to the invention in a perspective view; Figure 4 shows a facade panel of the fastening system of the invention with a view of a rear side of the facade panel in a perspective view; Figure 5 shows the fastening system according to the invention with a view of a front side of the facade panel in a perspective view in a mounted position; Figure 6 shows the fastening system according to the invention with a view of the front side of the facade panel from the same viewing direction as in Figure 1. Figure 5 in a fastening position; and Figure 7 a second embodiment of the fastening system according to the invention, in which, compared to the one in Figure 6The fastening system shown uses four secondary fasteners and no primary fasteners.

[0022] Basically, identical parts in the figures are assigned the same reference numbers.

[0023] The in Figure 1 The illustrated fastener 1 according to the invention is a first fastener 1 of a fastening system 2 according to the invention for fastening a facade panel 21 to a C-profile rail 24 (see Figure 6 The C-profile rail 24 or two C-profile rails 24 are attached parallel to each other at a distance from each other, for example to a building wall (not shown) to form a cladding of the building wall with facade panels 21.

[0024] The first fastener 1 has a sheet metal strip of constant width, which is bent twice in the same direction – at right angles in the exemplary embodiment – ​​and once in an opposite direction in a U-shape, such that the first fastener 1 has two parallel flanges 4, 5, which are integrally connected by a web 6. The two flanges 4, 5 are of the same height such that the web 6 is arranged parallel to and at a distance from the C-profile rail 24 when the two flanges 4, 5 are in contact with the C-profile rail 24. Due to the opposite bend, a strip-shaped support 7 is formed, which projects parallel to the web 6 on a side facing away from a second of the two flanges 5 and from a first of the two flanges 4. The support 7 has a parallel offset to the web 6 that is equal to the height of the flanges 4, 5.The two flanges 4, 5 and the web 6 form a U-shaped bracket 8, from the first flange 4 of which the support 7 extends outwards parallel to the web 6.

[0025] In the support 7, the first fastener 1 has a fastening hole 9 for a hammerhead fastener 10. In the exemplary embodiment, the fastening hole 9 is rectangular with a circular widening in its center (see Figure 4 ).

[0026] The web 6 of the first fastener 1 has an anchor fixing hole for an anchor 11, which leads to the fastening of the fastener 1 to a rear side of the facade panel 21 in a recess in the Figures 4 to 6The anchor 11 is or will be anchored in the back of the facade panel 21 via an anchor hole (not shown). In this embodiment, the anchor 11 is rotatably attached to the web 6 of the first fastener 1 about an axis perpendicular to the web 6, such that the first fastener 1 is rotatably attached to the back of the facade panel 21 about the axis that is also perpendicular to the back of the facade panel 21. In this embodiment, the anchor 11 is an undercut anchor 13, and the anchor hole in the back of the facade panel 21 has an undercut in which the anchor 11 is expanded and thereby anchored.

[0027] The in Figure 2The illustrated variant of the first fastener 1 according to the invention has a longer web 6 with several fastening holes 9 for the anchor 11. In the exemplary embodiment, the variant of the first fastener 1 has two round holes and one elongated hole as fastening holes 9 for the anchor 11, wherein the anchor 11 is rotatably and additionally slidably attached to the web 6 of the second fastener 1 in the elongated hole. Figure 2 Several anchors 11 are shown to illustrate the possible positions. In practice, however, only one anchor 11 is used per first fastener 1. The first fastener 1 is attached to the back of the facade panel 21 by means of the anchor 11, allowing it to rotate and, if necessary, slide.

[0028] The in Figure 3The illustrated second fastener 14 of the fastening system 2 according to the invention has a U-shaped bracket 8 like the first fastener 1, but without the support 7 and instead with a hammer head 15 on a first bracket flange 16 and a projection 17 in a transverse center at a free end of a second bracket flange 18. A connecting web 19 joins the two bracket flanges 16, 18 integrally to form the U-shaped bracket 8.

[0029] The hammerhead 15 is formed by two opposing rectangular, slot-shaped recesses in the longitudinal sides of the first stirrup flange 16 of the second fastener 14.

[0030] On both sides of the extension 17, the second stirrup flange 18 of the second fastener 14 has steps that form a step support 20 with which the second stirrup flange 18 of the second fastener 14 rests against the C-profile rail 24 when the second fastener 14 is attached to the C-profile rail 24 as intended.

[0031] The first stirrup flange 16 of the second fastener 14 extends up to the recesses in its longitudinal sides forming the hammerhead 15, and the second stirrup flange 18 of the second fastener 14 extends up to the step support 20 to the same height as the flanges 4, 5 of the first fastener 1, such that the webs 6, 19 of the two fasteners 1, 14 are arranged parallel to and at the same distance from the C-profile rail 24 when the fasteners 1, 14 are attached to the C-profile rail 24 as intended.

[0032] Like the web 6 of the first fastener 1, the connecting web 19 of the second fastener 14 has an anchor mounting hole in which an anchor 11 – in the exemplary embodiment an undercut anchor 13 and in the exemplary embodiment with a ring fitting 12 made of plastic – is rotatably mounted about an axis perpendicular to the connecting web 19. The anchor 11 is fastened in an anchor hole in the back of the facade panel 21 such that the second fastener 14, like the first fastener 1, is rotatably mounted on the back of the facade panel 21 about an axis of rotation perpendicular to the back of the facade panel 21.

[0033] Figure 4Figure 1 shows the facade panel 21 with a view of its back side 22, to which – in the exemplary embodiment – ​​two first fasteners 1 and two second fasteners 14 are rotatably attached to the corners of an imaginary rectangle about the axes of rotation perpendicular to the back side 22. As described above, each fastener 1, 14 is rotatably attached to the back side 22 of the facade panel 21 by means of an undercut anchor 13 in an undercut anchor hole (not shown), in particular a blind hole, which is provided in the back side 22 of the facade panel 21. The two first fasteners 1 are attached side by side to the back side 22 of the facade panel 21 at a distance from each other, and the two second fasteners 14 are attached side by side to the back side 22 of the facade panel 21 at the same distance from each other as the first fasteners 1.In the exemplary embodiment, the second fasteners 14 have the same distances from the first fasteners 1, which is not mandatory, however.

[0034] The Figures 5 and 6 The illustrations show the fastening system 2 according to the invention with a view of a front side 23 of the facade panel 21 opposite the rear side 22, wherein the facade panel 21 is Figures 5 and 6 The diagram is drawn with dashed lines and transparent backgrounds so that the fasteners 1, 14 and the C-profile rails 24 are visible. Two C-profile rails 24 are attached vertically, parallel to each other, at a distance from each other, for example, on the outside of a house wall. The first fasteners 1 on the back 22 of the facade panel 21 are spaced the same distance apart as the C-profile rails 24, and the second fasteners 14 are also spaced this distance apart.

[0035] As in Figures 4 and 5As can be seen, the first fasteners 1 are positioned transversely and the second fasteners 14 are positioned at an angle. The second fasteners 14 are positioned at such an angle that their hammerheads 15 can be inserted into the C-profile rails 24 through the longitudinal slots 25 of the C-profile rails 24 by bringing the facade panel 21, with its rear side 22 facing the C-profile rails 24, close to the sides of the C-profile rails 24 having the longitudinal slots 25.

[0036] When the hammerheads 15 of the second fasteners 14 are located in the C-profile rails 24, the facade panel 21 is displaced or moved transversely to the C-profile rails 24, as shown by arrow 26. Because the hammerheads 15 of the second fasteners 14 protrude into the C-profile rails 24 through the longitudinal slots 25, they do not move transversely to the C-profile rails 24 with the facade panel 21, but rather the second fasteners 14 rotate as the facade panel 21 moves transversely to the C-profile rails 24, as shown by the circular arrows 27. Figure 5 shown to have their axes of rotation perpendicular to the rear side 22 of the facade panel 21 by means of the anchors 11 or undercut anchors 13.

[0037] The facade panel 21 is moved perpendicular to the C-profile rails 24 until the fasteners 1, 14 are located on the C-profile rails 24 and the hammerheads 15 of the second fasteners 14 are positioned transversely in the C-profile rails 24, as shown. Figure 6 The hammerheads 15, positioned transversely in the C-profile rails 24, engage the C-profile rails 24 from the inside on both sides of the longitudinal slots 25 in such a way that the second fasteners 14 are held against the C-profile rails 24. The second fasteners 14 hold the facade panel 21, which is attached to them, to the two C-profile rails 24.

[0038] The hammerheads 15 of the second fasteners 14, which engage through the longitudinal slots 25 into the C-profile rails 24, form pivot joints 30 which are Figure 6 shown are transverse axes 31 running perpendicular to the C-profile rails 24, about which the second fasteners 14 and with them the facade panel 21 can be pivoted.

[0039] When the facade panel 21 is moved transversely to the C-profile rails 24, the facade panel 21 is pivoted about the transverse axis 31 of the pivot joints 30, which are formed by the hammerheads 15 of the second fasteners 14 engaging in the C-profile rails 24, such that the distance between the second stirrup flanges 18 of the second fasteners 14 and the C-profile rails 24 is increased, allowing the projections 17 on the second stirrup flanges 18 of the second fasteners 14 to move transversely to the C-profile rails 24 over the sides of the C-profile rails 24 having the longitudinal slots 25. This results in the first fasteners 1 being brought closer to the C-profile rail 24 than they will be in their final position after assembly. This is possible because the fasteners 1 are positioned transversely and the C-profile rail 24 temporarily fits between the first flanges 4 of the first fasteners 1.If the hammerheads 15 of the second fasteners 14 are positioned transversely in the C-profile rails 24, the projections 17 on the second stirrup flanges 18 of the second fasteners 14 are located over the longitudinal slots 25 of the C-profile rails 24. The facade panel 21 is now pivoted back into a position parallel to the C-profile rails 24, causing the projections 17 on the second stirrup flanges 18 of the second fasteners 14 to enter the longitudinal slots 25 of the C-profile rails 24 and the stepped supports 20 of the second stirrup flanges 18 of the second fasteners 14 on both sides of the projections 17 to come into contact with the sides of the C-profile rails 24 having the longitudinal slots 25. The extensions 17 on the second stirrup flanges 18 of the second fasteners 14, which engage in the longitudinal slots 25 of the C-profile rails 24, prevent movement of the second fasteners 14 transversely to the C-profile rails 24 by means of a positive locking in the longitudinal slots 25 of the C-profile rails 24.This prevents the second fasteners 14 on the rear 22 of the facade panel 21 from rotating about their axes of rotation perpendicular to the rear 22 of the facade panel 21 and holds the hammerheads 15 of the second fasteners 14 in a rear grip in the C-profile rails 24.

[0040] Finally, the first fasteners 1 on the rear side 22 of the facade panel 21 are rotated so that their supports 7 rest on the C-profile rails 24 and the fastening holes 9 in the supports 7 are aligned with the longitudinal slots 25 of the C-profile rails 24. The first fasteners 1 are arranged on the rear side 22 of the facade panel 21 such that their supports 7 project upwards beyond an edge 32 of the facade panel 21 or, more generally, beyond any edge of the facade panel 21.

[0041] The first fasteners 1 are attached to the C-profile rails 24 at their supports 7 by means of known hammerhead fasteners 10, the hammerhead fasteners 10 being part of the first fasteners 1 according to the invention. The hammerhead fasteners 10 are, as shown in Figure 6 The first fasteners 1 are inserted into the C-profile rails 24 through the mounting holes 9 in the supports 7 and positioned transversely in the C-profile rails 24 such that their hammerhead nuts (not shown) engage the C-profile rails 24 internally on both sides of their longitudinal slots 25. The screws 29 of the hammerhead fasteners 10 are tightened, thereby fixing the supports 7 of the first fasteners 1 to the C-profile rails 24.

[0042] In general, the hammerhead fasteners 10 of the first fasteners 1 form hammerhead elements 28 of the first fasteners 1 and the hammerheads 15 of the second fasteners 14 form hammerhead elements 28 of the second fasteners 14.

[0043] In Figure 7 A further embodiment of the fastening system 2 according to the invention is shown. This corresponds essentially to the one in Figure 6 The structure shown is therefore only discussed in terms of its differences. Compared to the structure in Figure 6 are in the embodiment in Figure 7 Four second fasteners 14 are provided. The upper of the two fasteners 14 replace the ones in Figure 6 The first fastener 1 shown is supported by a stop plate 33, which is connected to the C-profile rail 24 (for example, welded, glued, or frictionally secured). This ensures that the respective upper second fastener 14 does not change its position relative to the C-profile rail 24. In other words, the upper second fasteners 14 can rest against the respective stop elements 33.

Claims

1. A securing system (2) for securing a cladding panel (21) to a C-profile rail (24), wherein the securing system (2) has the cladding panel (21), at least one fastener (1, 14) for securing the cladding panel (21) to the C-profile rail (24), and an anchor (11), in particular an undercut anchor (13), which is anchored in an anchor hole in a rear face (22) of the cladding panel (21) and with which the fastener (1, 14) is secured to the rear face (22) of the cladding panel (21), wherein the at least one fastener (1, 14) has a hammer head element (28) with which the at least one fastener (1, 14) can be secured to the C-profile rail (24), characterized in that a second fastener (14) has a U-shaped bracket (8) with two bracket flanges (16, 18) and a connecting web (19) connecting the two bracket flanges (16, 18), and in that a first of the two bracket flanges (16) has a hammer head (15) at an end remote from the connecting web (19), which hammer head can be brought into engagement behind the C-profile rail (24) for securing to the C-profile rail (24).

2. The securing system (2) according to claim 1, characterized in that a first fastener (1) has a U-shaped bracket (8) with two flanges (4, 5), a web (6) connecting the two flanges (4, 5) and a support (7) that is parallel to the web (6) and that protrudes from the first flange (4) at an end of a first of the two flanges (4) remote from the web (6) on a side of the first flange (4) opposite the web (6).

3. The securing system (2) according to claim 2, characterized in that the first fastener (1) has a securing hole (9) in the support (7), in which a hammer head fastener (10) can be secured, which can be brought into engagement behind the C-profile rail (24) for fastening the support (7) to the C-profile rail (24).

4. The securing system (2) according to one or more of claims 1 through 3, characterized in that a second of the two bracket flanges (18) of the second fastener (14) is wider than a width of the longitudinal slot (25) of the C-profile rail (24) and has an extension (17), which is narrower than the width of the longitudinal slot (25) of the C-profile rail (24) in such a way that the second bracket flange (18) of the second fastener (14) can be placed on the outside of the C-profile rail (24) on both sides of the longitudinal slot (25) and the extension (17) can be inserted into the longitudinal slot (25) of the C-profile rail (24) in a positive-locking manner.

5. The securing system (2) according to one or more of claims 1 through 4, characterized in that the hammer head (15), which is in engagement behind the C-profile rail (24), forms a pivot joint (30) on the C-profile rail (24), which pivotably connects the second fastener (14) to the C-profile rail (24) about a transverse axis (31) running transversely to the C-profile rail (24) in such a way that a distance of the second bracket flange (18) from the C-profile rail (24) can be varied.

6. The securing system (2) according to one or more of the preceding claims, characterized in that the fastener (1, 14) is rotatably secured to the rear face (22) of the cladding panel (21).

7. The securing system (2) according to one or more of the preceding claims, characterized in that the anchor (11) can be arranged on the fastener (14) at various points offset relative to one another in a longitudinal direction of the fastener (14) or can be adjusted in the longitudinal direction of the fastener (14).

8. The securing system (2) according to one or more of the preceding claims, characterized in that two fasteners (1, 14), in particular a first fastener (1) according to claim 2 and a second fastener (14) according to claim 4, are secured to the rear face (22) of the cladding panel (21) at a distance from one another, in particular in a longitudinal direction of the C-profile rail (24).

9. The securing system (2) according to one or more of the preceding claims, characterized in that the securing system (2) additionally has two C-profile rails (24) arranged next to one another at a distance and a cladding panel (21), to the rear face (22) of which two first fasteners (1) and / or two second fasteners (14) are secured at the distance between the C-profile rails (24) and with which the cladding panel (21) is secured to the two C-profile rails (24).

10. A method for securing a cladding panel (21) to a C-profile rail (24) with a securing system (2) according to one or more of the preceding claims, characterized in that the second fastener (14) is rotated on the rear face (22) of the cladding panel (21) in such a way that the first bracket flange (16) with the hammer head (15) is at an angle to the C-profile rail (24) in such a way that the hammer head (15) can be inserted into the C-profile rail (24) through the longitudinal slot (25) of the C-profile rail (24), in that the rear face (22) of the cladding panel (21) is turned towards the C-profile rail (24) and brought closer to the C-profile rail (24) in such a way that the hammer head (15) of the second fastener (14) passes through the longitudinal slot (25) of the C-profile rail (24) into the C-profile rail (24), and in that the cladding panel (21) is then moved transversely to the C-profile rail (24) in such a way that the second fastener (14) rotates on the rear face (22) of the cladding panel (21) in such a way that the hammer head (15) engages behind the C-profile rail (24) on both sides of its longitudinal slot (25).

11. The method according to claim 11, characterized in that a first fastener (1) is secured to the rear face (22) of the cladding panel (21), and in that the cladding panel (21) is pivoted about the transverse axis (31) of the pivot joint (30) that the hammer head (15) of the second fastener (14) forms in the C-profile rail (24), in that the extension (17) on the second bracket flange (18) of the second fastener (14) is moved across the longitudinal slot (25) of the C-profile rail (24) when the cladding panel (21) moves transversely to the C-profile rail and the cladding panel (21) is subsequently pivoted about the transverse axis (31) in such a way that the second bracket flange (18) of the second fastener (14) rests on the outside of the C-profile rail (24) and the extension (17) engages in the longitudinal slot (25) of the C-profile rail (24) in such a way that the second fastener (14) is held against rotation on and in the C-profile rail (24) by its hammer head (15) engaging in the C-profile rail (24) and by positive locking of the extension (17) of the second bracket flange (18) of the second fastener (14) in the longitudinal slot (25) of the C-profile rail (24).

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