PANEL ELEMENT FOR COVERING A ROOF AND / OR WALL AND COVERING FOR A ROOF AND / OR WALL

Abstract

The invention relates to improvements in the technical field of panel elements for cladding ceilings and / or walls. To this end, it proposes, among other things, a panel element (1) having a retention device (4) with which at least one retention spring (3), used to fasten the panel element (1) to the ceiling and / or wall, can be fixed in its transport position.

Description

PANEL ELEMENT FOR COVERING A ROOF AND / OR WALL AND COVERING FOR A ROOF AND / OR WALL Field of Invention The invention relates to a panel element for covering a roof and / or wall, and to a covering for a roof and / or wall. Background of the Invention To design ceilings and / or walls, it is known to cover ceilings and / or walls with the use of panel elements. A panel element having the characteristics of the preamble of claim 1 is already known from WO 2015 / 183 632 Al. A suspended ceiling system comprising roof panels attached to a grid arrangement is already known from US 2016 145 863 Al. In particular, when panel elements need to be attached to ceilings, it has become standard practice to suspend the panel elements from the ceiling to be covered. For this purpose, retaining springs, such as torsion springs, are used. The retaining springs are attached at one end to the panel element being suspended and at the other end to the ceiling and / or wall. In general, the retaining springs are pre-mounted on a cover panel of a panel element frRZfr ίη / ZZΖΠZ / E / YΙΛΙ Ref. 340196 of this type. Although this has advantages for assembling the panel elements, it can make handling the panel elements more difficult during storage and transport. Summary of the Invention Therefore, it is an object of the invention to provide a panel element for covering a ceiling and / or wall that is distinguished by its ease of handling. To achieve the objective, the first proposal is a panel element for cladding a ceiling and / or wall, having the means and features of the independent claim, which focuses on such a panel element. Specifically, the proposed panel element for cladding a ceiling and / or wall comprises a cover panel and at least one retaining spring, which can be moved from a transport position to a clamping position for securing the cover panel to a ceiling or wall, preferably in a suspended manner. The panel element includes a retaining device for the at least one retaining spring, configured according to the invention to fix the retaining spring in its transport position. The retaining device can be configured to fix the retaining spring under tension in its transport position. ίη / ZZΖΠZ / E / YΙΛΙ The retaining device can be used to fix at least one retaining spring in the transport position on the cover panel. The cover panel is preferably rectangular. This ensures that the retaining spring remains in its transport position while the panel element is handled during transport, storage, and assembly. This prevents damage to the panel element caused by the retaining spring. According to the invention, the retaining device is configured to clamp at least one retaining spring in its transport position. This allows the retaining spring to be fixed particularly reliably in its transport position. This can correspondingly simplify the design of the retaining device. It should be mentioned in this context that the retaining spring can also be fixed in its clamping position by means of its inherent spring force. The retention device itself may not have any moving parts. According to the invention, the retention device is in the form of a preferably static support, for the purpose of fixing at least one retention spring in its transport position under tension, preferably by virtue of its inherent spring force. According to the invention, the retaining spring, particularly by means of its spring legs, is provided to be in its transport position closer to a face of the cover panel, specifically a rear face of the cover panel, than in its clamping position. This face may be a face of the cover panel that is not a visible face of the panel element. Here, the retaining spring, in its transport position, may rest against this face of the cover panel, which is preferably not a visible face of the panel element. In the transport position, the retaining spring, and in particular its spring legs, may be aligned parallel or approximately parallel to this face of the cover panel. Therefore, in its transport position, at least one retaining spring can be securely attached to a face of the cover panel that is not a visible face of the panel element. This prevents damage to the visible face of the panel element caused by the retaining spring during handling in transport and / or storage, and even during assembly. The visible face of the panel element can be ίΠ / ZΖΖηZ / E / YΙΛΙ a face that remains visible in the mounted use position of the panel element. The spring legs of at least one retaining spring may be further apart in the clamping position—that is, when moved from its transport position to secure the panel element to a ceiling and / or wall—than in its transport position when the retaining spring is under tension. In its clamping position, the retaining spring may be released from tension or at least be under less tension than in its transport position. To transfer the retaining spring from its transport position to its clamping position, it can pivot in the retaining device's locking position. The retaining device can be designed so that the retaining spring can pivot around a pivot axis extending the length of the cover panel. Alternatively, the retaining device can be designed so that the retaining spring must move with a combined pushing and pivoting motion to transfer it from the transport position to its clamping position. For this purpose, the retaining device may include a longitudinal and pivoting guide for at least one retaining spring. The retaining spring can be positioned on the retaining device so that it can be moved longitudinally from its transport position. The longitudinal direction of the retaining spring can be aligned with the opening angle of the retaining spring's legs. The retention device may limit an oscillation angle for the oscillation of the retention spring between its transport position and its clamping position to a maximum of 110°, preferably 90°, particularly with respect to the back face of the cover panel. In a particularly advantageous embodiment of the panel element, the retaining device is provided to have a respective retaining opening for each spring leg of the at least one retaining spring. The retaining openings may be designed to allow the retaining spring to be moved between its transport position and its clamping position. The two retaining openings may have edges oriented in opposite directions, against which the spring legs of the at least one retaining spring rest when the retaining spring is in the transport position. The two edges are separated by a distance such that the legs of the retaining spring are held under tension when the retaining spring is in the transport position, and as a result, the retaining spring is secured in its transport position under tension. To fix the retaining spring in the transport position, but optionally also in the clamping position, it may be advantageous for the spring legs of at least one retaining spring to be hook-shaped at their free ends. To securely fix the retaining spring in its transport position, it may be advantageous for the retaining device, adjacent to at least one of the two retaining openings, to have an insertion opening to receive a free end, preferably hook-shaped and / or bent, of one of the spring legs of the at least one retaining spring. After the retaining spring has been inserted by clamping its spring legs into the two retaining openings, the end of at least one of the spring legs of the at least one retaining spring can be inserted into the aforementioned insertion opening, thus securing the retaining spring particularly reliably in its transport position. Each retaining opening is preferably assigned at least one insertion opening. In this way, the retaining spring in the transport position can be secured by inserting the free ends, preferably hook-shaped and / or bent, of its spring legs into the two insertion openings. There, the preferably hook-shaped ends of the spring legs prevent the retaining spring from displacing from its transport position in its longitudinal extension direction due to its spring force, which tends to separate the spring legs. This is particularly reliable when the hook-shaped ends of the spring legs engage behind a respective edge of the insertion opening. The spring legs can be bent at their free ends between 100° and 200°, and preferably by 180°. The retaining opening mentioned above may have a first opening portion and a second opening portion. The spring legs may be placed in the first opening portion when the retaining spring is in the transport position. The spring legs may be placed in the second opening portion when the retaining spring is in the clamping position. To introduce force into the retaining device, it may be advantageous that between two retaining openings of the retaining device that are assigned to a retaining spring, in particular between two second portions of opening, a retaining net is formed which, by means of an intermediate portion arranged between the legs of the spring, fixes the retaining spring, in the clamping position, in the retaining device. The first opening portion, preferably each first opening portion, can be limited in the oscillation direction of the retaining spring towards its clamping position by means of an opening edge, which secures the associated spring leg by positive attachment in the transport position. This allows at least one retaining spring to be fixed particularly reliably in its transport position. In one embodiment of the panel element, the first opening portion is provided to be arranged closer than the second opening portion to a face of the cover panel, which is not a visible face of the panel element, for example, closer to the back face, already mentioned above, of the cover panel. In this respect, the first opening portion may form a larger angle with the face mentioned above, in particular the rear face of the cover panel, than the second opening portion. In one embodiment of the panel element, the second opening portion is provided to be aligned parallel to the face mentioned above, in particular the rear face of the cover panel. It is then preferably the case that the first opening portion is aligned at a right angle, on the one hand, with respect to the face mentioned above, in particular the rear face of the cover panel, and on the other hand, with respect to the second opening portion of the retaining device. At this point it should be mentioned that the two opening portions of the retaining opening are connected to each other, with the result that the respective spring leg placed in the retaining opening can be moved from one opening portion to the other, in order to transfer the torsion spring from the carrying position to its clamping position, and vice versa. The first and second aperture portions can be aligned relative to each other at an angle of less than 180°. Preferably, the first and second aperture portions can span an angle between 80° and 110° relative to each other. As mentioned above, it is preferred that a measurable angle of 90° be established between the first and second aperture portions. In an advantageous embodiment of the panel element, the retaining device comprises a profile, in particular an edge profile, which is disposed or formed on the cover panel. The profile can preferably be disposed or formed on a face of the cover panel that is not a visible face of the panel element, for example, on the rear face of the cover panel mentioned above. In this respect, the retention openings mentioned above can be formed in the profile of the retention device. The profile can be shaped, for example, by bending the roof panel. Alternatively, the profile is arranged or formed on one face, particularly the back face of the roof panel. The profile may have a first flange that abuts the face mentioned above, specifically the back face of the roof panel. The first opening portion of the retention openings may be formed in this flange. Furthermore, the profile may also have a second flange, in which the second opening portions of the retention openings may be formed. The second flange may be positioned opposite the face of the roof panel mentioned above, specifically its back face. Alternatively, the first flange may be positioned between the roof panel and the second flange. The panel element may have a stop by which it can be positioned against a fixing support, for example, a retaining profile, frRZfr Ln / Zznz / E / YIAI, on a ceiling or wall in the mounted position. The stop may be in the form of a seating flange, which is oriented transversely or at a right angle to the cover panel, particularly to the back face of the cover panel. The seating flange may be a profile flange, in particular a third profile flange of the panel element profile mentioned above. In one embodiment of the panel element, it is provided that on two separate edges of the cover panel there is in each case at least one retaining device of at least one retaining spring. In one embodiment of the panel element, at least two retaining springs are arranged on one edge of the cover panel. It is also conceivable to place two retaining springs on one edge of the cover panel and two additional retaining springs on a second edge of the cover panel that is oriented away from or facing the first edge. The cover panel of the panel element may be made, at least partially, of metal. It is preferable that the cover panel be made entirely of metal. To achieve the object, what is ultimately proposed is a covering for a ceiling and / or wall, which has at least one fixing bracket that can be attached to a ceiling and / or wall and is held in the position of use, and which has at least one panel element as claimed in one of the claims relating to the panel element. In this respect, it is provided that, in its position of use, the panel element is fixed to the fixing bracket by means of its at least one retaining spring. In this respect, it is possible to engage the retaining spring in the fixing bracket to hold the panel element. In this case, the retaining spring can assume a position in which it is released from tension, or at least under less tension, compared to its transport position under tension, and in which its spring legs are separated to a greater extent than when the retaining spring is in the transport position.The cladding fixing support can be a retaining profile, to which at least one retaining spring can be attached. The mounting bracket may have at least one retaining hole, for example, an oblong hole, for each retaining spring. The elastic legs of the retaining spring can be guided through the retaining hole and then separated by the spring force. In this way, the panel element can be securely attached to the mounting bracket, and, more importantly, also detached, with the help of its at least one retaining spring. The retention hole mentioned above can be fitted with at least one safety housing, specifically at least one safety hole, to receive a hook-shaped end of a spring leg of a retention spring. By means of its hook-shaped end, a spring leg of a retention spring can be engaged in this at least one safety housing, for example, to hang the panel element on the fixing bracket during assembly and / or to intercept the panel element if it becomes dislodged from its correct operating position, as might occur, for example, due to strong shaking during an earthquake. In this way, the at least one safety housing can be used as a safety mechanism against a panel element falling from the cladding. This type of fall arrest device is particularly reliable if a respective safety housing is provided on each side of a retaining hole. This allows each of the two hook-shaped ends of the retaining spring legs mentioned above to engage in one of the two safety housings, either to hang the panel element on the fixing bracket in a position that facilitates its installation, or to intercept the panel element if it becomes dislodged from its correct mounting position. Therefore, it is possible to reliably prevent the cladding panel element from falling, for example, in the event of an earthquake. Each retaining hole in the fixing bracket, through which the spring legs of a panel element's retaining spring are guided, can accommodate two such safety housings. Therefore, it is possible to secure the panel element against falling using multiple, and preferably all, retaining springs. Brief Description of the Figures The invention will now be described in more detail on the basis of an exemplary embodiment, but is not limited to this exemplary embodiment. Other exemplary embodiments will arise from the combination of features of individual or multiple patent claims and / or from the combination of individual or multiple features of the exemplary embodiment. In the figures: Figure 1 shows a rear perspective view of a panel element with two retaining springs, Figure 2 shows an enlarged illustration of the detail marked by circle A in Figure 1, Figure 3 shows a plan view of the panel element illustrated in the previous figures, Figure 4 shows an enlarged illustration of the detail marked by rectangle B in Figure 3, Figure 5 shows two panel elements on a fixing bracket for roof cladding, and Figure 6 shows an enlarged detail of the Figure 5 to illustrate the function of the panel element retaining springs in the fixing bracket. Detailed Description of the Invention All figures show at least parts of a panel element, generally designated 1, for cladding a ceiling and / or wall. Panel element 1 has a rectangular cover panel 2 and multiple retaining springs 3. The retaining springs 3 are so-called leg springs, which are also known as torsion springs. To attach the cover panel 2 to a ceiling and / or wall in a suspended manner, the retaining springs 3 can be transferred from their transport positions, shown, for example, in Figures 1 to 4, to a clamping position, in which some retaining springs 3 are illustrated in Figures 5 and 6. The retaining springs 3 are attached to the cover panel 2 of panel element 1 by means of a retaining device 4. Figures 1 to 4 illustrate that the retaining device 4 is configured to fix the retaining springs 3 in their respective transport positions. In this way, the retaining springs 3 are securely immobilized in their transport position on the cover panel 2 of panel element 1. According to the illustrative embodiment of panel element 1 shown in the figures, the retaining device 4 is configured to fix the retaining springs 3 in their respective transport positions under tension. The retaining device 4 is designed so that the retaining springs 3 are fixed in their transport position by their inherent spring force. In this respect, the retaining device 4 acts as a static support to fix the retaining springs 3 in their transport position under tension. A comparison of Figures 1 to 4 with Figures 5 and 6 makes it clear that the retaining springs 3, in their transport position compared to their clamping position, approach with their spring legs 5, 6, a face of the cover panel 2 that is not a visible face 26 of the mounted panel element 1. The face that the retaining springs 3 approach with their spring legs 5, 6 in the transport position is a rear face 7 of the cover panel 2. Through their spring legs 5, 6, the retaining springs 3 are aligned approximately parallel to the rear face 7 in the transport position. The spring legs 5, 6 of at least one retaining spring 3 are further apart in its clamping position than in its transport position. Consequently, the retaining springs 3 are under greater tension in the transport position than in the clamping position. To transfer the retaining springs 3 from their transport position to their clamping position, the retaining springs 3 can oscillate on the retaining device 4. An oscillation axis around which the oscillating motion of the retaining springs 3 takes place extends here along the cover panel 2 of panel element 1. As shown in the figures, it is clear that the oscillating motion constitutes only one component of the movement for transferring the retaining springs 3 from their transport position to their clamping position. Before the retaining springs 3 can oscillate on the retaining device 4, in the illustrative manner shown in the figures, they must be moved by a longitudinal motion aligned in the direction of their longitudinal extension and in the direction of an opening angle of their spring legs 5, 6.For this purpose, the retention device 4 provides a combined longitudinal and oscillating guide for the retention springs. 3. Therefore, the retaining springs 3 are arranged in the oscillating device also in such a way that they can be displaced from their carrying position along their longitudinal direction. The retention device 4 limits the oscillation angle of the retention springs 3 between their respective transport and clamping positions to a maximum of 110°. In the illustrative version of panel element 1 shown in the figures, the oscillation angle of the retention springs 3 between their transport and clamping positions is limited to 90°. The retaining device 4 has a respective retaining opening 8 for each spring leg 5, 6 of the two retaining springs 3. The two retaining openings 8 assigned to a retaining spring 3 have edges 9, 10 oriented in opposite directions. According to the figures, these edges 9, 10 are aligned at right angles to the rear face 7 of the cover panel 2. When the retaining spring 3 is in the transport position, the spring legs 5, 6 of the retaining springs 3 rest against these edges 9, 10. The edges 9, 10 are spaced apart such that the spring legs 5, 6 of the retaining springs 3 are held taut when the retaining springs 3 are in the transport position. As a result, the retaining springs 3 are fixed in their transport position under tension.The tension to fix the retaining springs 3 is created in this case by the respective retaining spring 3 by virtue of its own inherent spring force. The spring legs 5, 6 of the retaining springs 3 have hook-shaped ends. The retaining springs 3 can be hooked onto a fixing bracket 23 by their hook-shaped ends, as shown, for example, in the right half of Figure 5. This facilitates the mounting of the panel element 1. The retaining device 4 of panel element 1 has insertion openings 11 adjacent to the retaining openings 8. The insertion openings 11 serve to receive a free, hook-shaped, bent end 12 of the spring legs 5, 6 of the retaining springs 3. The hook-shaped ends 12 of the spring legs 5, 6, positioned in the insertion openings 11, prevent the retaining springs 3 from being displaced from their carrying position in their longitudinal extension direction by their spring force, the pressure of which separates the spring legs 5, 6. This is achieved particularly reliably when the hook-shaped ends 12 of the spring legs 5, 6 are engaged behind a respective edge of the insertion openings 11. The spring legs 5, 6 can be bent at their hook-shaped ends 12 between 100° and 200°, particularly 180°. The retaining openings 8 each comprise a first opening portion 13 and a second opening portion 14. When the retaining spring 3 is in the carrying position, the spring legs 5, 6 are placed in the first opening portion 13 and, when the retaining spring 3 is in the clamping position, they are placed in the second opening portion 14 of the retaining openings 8. The retaining device 4 has a respective retaining bridge 15 between two retaining openings 8 assigned to a retaining spring 3, specifically between two second opening portions 14. The retaining bridge 15 fixes each of the retaining springs 3, which are in the clamping position to the retaining device 4 and thus to the cover panel 2 of the panel element 1, by means of an intermediate portion 16 disposed between the spring legs 5, 6. The intermediate portion 16 is in the form of an eyelet, consisting of turns of a wire from which the retaining springs 3 are manufactured. The first respective opening portion 13 of the retaining openings 8 is limited by an opening edge 17 in the swing direction of the retaining springs toward their respective clamping positions. The opening edge 17 is provided to positively secure the spring legs 5, 6 of the retaining spring 3, which are in the first opening portion 13 in the transport position, toward the clamping position of the retaining spring 3. In the case of panel element 1 shown in the figures, the opening edge 17 is aligned parallel to the back face 7 of the cover panel 2 of panel element 1. The first opening portions 13 of the retaining openings 8 are positioned closer to the back face 7 of the cover panel 2 than the second opening portions 14. Here, the first opening portion 13 of the retaining opening 8 forms a greater angle with the back face 7 of the cover panel 2 than the second opening portion 14, which is aligned parallel to the back face 7 of the cover panel 2 in the illustrative configuration shown. Here, the angle is 90°. Therefore, the first opening portion 13 and the second opening portion 14 of the retaining openings 8 are aligned at an angle of less than 180° relative to each other. The retention device 4 comprises a profile 18, which is arranged on an edge of the cover panel 2 and can therefore be called the edge profile. The retention openings 8 mentioned above are formed in the profile 18. The profile 18 comprises a first flange of profile 19, in which the first opening portions 13 of the retention device 8 are formed. In addition, the profile 18 also comprises a second flange of profile 20, in which the second opening portions 14 of the retention openings 8 are formed. In the exemplary embodiment shown in the figures, of panel element 1, profile 18 is formed by folding the cover panel 2 on the back face 7 of cover panel 2. In an exemplary embodiment not shown in the figures, a profile 18 is attached or integrally formed on a face of cover panel 2 that is preferably not a visible face 26 of panel element 1. In one embodiment of panel element 1, not shown in the figures, the respective at least one retaining device 4 with at least one retaining spring 3 is arranged on two mutually spaced edges of the cover panel 2. In the exemplary embodiment of panel element 1 shown in the figures, two retaining springs 3 are arranged on one edge of the cover panel 2. The cover panel 2 of panel element 1 illustrated in the figures is made of metal. The cover panel 2 can be attached to a corresponding retaining structure by means of its retaining edge 21 away from the retaining device 4 in order to secure the roof element 1. On one side, the panel element 1 is secured to the ceiling by the two retaining springs 3, while on the other side it can be attached at least indirectly to the ceiling or wall with the help of its retaining edge 21. Figures 5 and 6 now show a cladding, generally designated as 22, for a ceiling and / or wall. The cladding 22 comprises multiple panel elements 1, shown in Figures 1 to 4, and at least one fixing bracket 23 attached to the ceiling and / or wall in the position of use. The panel elements 1 are secured to the fixing bracket 23 by their retaining springs 3 in their position of use. To this end, the retaining springs 3 are engaged in the fixing bracket 23 by their spring legs 5, 6. The fixing bracket 23 is configured as a retaining profile and comprises multiple retaining holes 24 in the form of oblong slots for engaging the spring legs 5, 6. Figure 5 illustrates the assembly of the panel 1 elements. First, the retaining springs 3 are pushed longitudinally out of their respective transport positions. Then, the retaining springs 3 are guided through the retaining holes 24 of the fixing bracket 23 by the hook-shaped ends of their spring legs 5, 6, and engaged in the clamping housings 27, located on either side of the retaining holes 24, of the fixing bracket 23 to suspend the panel 1 element. In the process, the back face 7 of the cover panel 3 is aligned approximately in the direction of gravity (see right half of Figure 5). After that, the panel element 1 thus suspended is lifted by 90°, hooked onto a retaining rail, which is attached to the ceiling, by way of its retaining edge 21, and pushed in the direction of the ceiling opposite to the direction of gravity.In the process, the spring legs 5, 6 on one side enter the second portions of the opening 14 of the retaining openings 8. On the other side, the spring legs 5, 6 slide further through the retaining holes 24 and are separated due to the spring force of the retaining springs 3, as a result of which the panel element 1 can be properly suspended. The elements of panel 1 can become dislodged from their intended mounting position if subjected to strong vibrations and / or tremors, for example, in the event of an earthquake. If the elements of panel 1 become inadvertently dislodged from their intended mounting position, they can be intercepted using the hook-shaped ends 12 of the spring legs 5, 6 of their retaining springs 3 and the clamping housings 27, preventing them from falling. If the elements of panel 1 become dislodged, the spring legs 5, 6 slide through the retaining holes 24 until the hook-shaped ends 12 of the spring legs 5, 6 of the retaining springs 3 engage in the clamping housings 27. The hook-shaped ends 12 remain in place, securing the panel 1 element against falls. The hook-shaped ends 12 of the retaining springs 3 of element 1 of the right panel in Figure 5 engage in the clamping housings 27. It can be observed that the clamping housings 27 inserted into the fixing bracket 23 are continuous clamping holes. The panel element 1 has a seating wing 25, by means of which it can be seated against the fixing bracket 23 in the correct position of use. The seating wing 25 is a third profile wing of profile 18 and is aligned at a right angle to the rear face 7 of the cover panel 2 and / or at a right angle to the second profile wing 20. The invention relates to improvements in the technical field of panel elements for cladding ceilings and / or walls. To this end, the proposed element includes, among other things, a panel element 1 having a retention device 4 by means of which at least one retention spring 3, used to secure the panel element 1 to the ceiling and / or wall, can be fixed in its transport position. List of reference symbols Panel element Roof panel Retaining spring Retention device Spring leg Spring leg Back side of 2 Retaining opening Border of 8 Border of 8 Insertion opening 5, 6 hook-shaped end First portion of opening of 8 Second portion of opening of 8 Retaining bridge Intermediate portion 13 opening edge Profiles First profile wing frRZfr ίη / ΖΖΠΖ / Ε / ΥΙΛΙ ίΠ / 77Ω7 / Β / ΥΙΛΙ Second wing in profile Retaining edge Coating fixing bracket 24 Retaining hole Settlement wing Visible side Mounting housing It is hereby stated that, as of this date, the best method known to the applicant for putting the aforementioned invention into practice is the one that is clear from the present description of the invention.

Claims

1. A panel element for cladding a roof and / or a wall, comprising a cover panel and at least one retaining spring, in particular a spring with legs, movable from a transport position to a clamping position for securing the cover panel to a roof and / or wall, preferably suspended, wherein the panel element has a retaining device for the at least one retaining spring, characterized in that the retaining device is configured to fix the at least one retaining spring in its transport position under tension, wherein the retaining device, for fixing the at least one retaining spring in its transport position under tension, has the form of a static support and the at least one retaining spring is fixed to the retaining device in the transport position by its inherent spring force.given that the retaining spring is closer to a rear face of the cover panel in its transport position than in its clamping position.

2. Panel element according to the preceding claim, characterized in that the retention device is in the form of a static support for fixing under tension the at least one retention spring in its transport position.

3. Panel element according to any of the preceding claims, characterized in that the retaining spring, by means of its spring legs, is closer to the rear face of the cover panel in its transport position than in its clamping position, and / or in which the retaining spring, in its transport position, rests against the rear face of the cover panel.

4. Panel element according to any of the preceding claims, characterized in that the spring legs of the at least one retaining spring are further apart in its clamping position than in its carrying position.

5. Panel element according to any of the preceding claims, characterized in that the retaining spring can oscillate about the retaining device from its transport position to its clamping position, in particular about an oscillation axis extending along the length of the cover panel, and / or wherein the retaining device has a combined longitudinal and oscillation guide for the at least one retaining spring, such that the at least one retaining spring is arranged in the retaining device so that it can be displaced from its transport position in its longitudinal direction.

6. Panel element according to any of the preceding claims, characterized in that the retention device limits an oscillation angle for the oscillation of the retention spring between its transport position and its clamping position to a maximum of 110°, preferably 90°.

7. Panel element in accordance with any of the preceding claims, characterized in that the retention device has a respective retention opening for each spring leg of the at least one retention spring.

8. Panel element according to the preceding claim, characterized in that the retaining openings have edges far apart from each other, against which the edges of the spring legs of the at least one retaining spring rest when the retaining spring is in the transport position, wherein the two edges are at a distance from each other whose dimensions are such that the spring legs of the retaining spring are held under tension when the retaining spring is in the transport position, and as a result the retaining spring is fixed in its transport position under tension.

9. Panel element according to either of the two preceding claims, characterized in that the retention device, adjacent to at least one of the two retention openings, has an insertion opening for receiving a free end, preferably hook-shaped and / or bent, of one of the two spring legs of the at least one retention spring, in particular with the spring legs bent at their ends between 100° and 200°, preferably by 180°.

10. Panel element according to any of claims 7 to 9, characterized in that the retaining opening has a first opening portion and a second opening portion, and wherein the spring legs are arranged in the first opening portion when the retaining spring is in the carrying position and are arranged in the second opening portion when the retaining spring is in the clamping position.

11. Panel element according to any of claims 7 to 10, characterized in that a retaining bridge that fixes the retaining spring in the clamping position in the retaining device by means of an intermediate portion disposed between the spring legs, is formed between two retaining openings of the retaining device that are assigned to a retaining spring, in particular between two second opening portions.

12. Panel element according to either of the two preceding claims, characterized in that the first opening portion is limited in the swing direction of the retaining spring towards its clamping position by an opening edge, which secures a spring leg of the retaining spring by positive attachment in the transport position.

13. Panel element according to any of claims 10 to 12, characterized in that the first opening portion is closer to a face of the cover panel than the second opening portion, this face preferably not being a visible face of the panel element, in particular closer to the back face of the cover panel, and / or in that the first opening portion encompasses a greater angle with a face of the cover panel, preferably with a face that is not visible of the panel element, in particular with the back face of the cover panel, than the second opening portion, and / or in that the second opening portion is aligned parallel to a face of the cover panel, preferably to a face of the cover panel that is not a visible face of the panel element, in particular to the back face of the cover panel.

14. Panel element according to any of claims 10 to 13, characterized in that the first opening portion and the second opening portion are aligned relative to each other at an angle of less than 180°, in particular at an angle between 80° and 110°, preferably at an angle of 90°.

15. Panel element according to one of the preceding claims, characterized in that the retention device comprises at least one profile, in particular an edge profile, which is arranged or formed in the cover panel.

16. Panel element according to the preceding claim, characterized in that the retention openings are formed in the profile, the profile preferably having a first profile wing with the first opening portions and a second profile wing with the second opening portions.

17. Panel element according to either of the two preceding claims, characterized in that the profile is formed by folding the cover panel, in particular on a rear face of the cover panel, or in that the profile is attached to or integrally formed on a face, in particular on a rear face of the cover panel.

18. Panel element according to any of the preceding claims, characterized in that at least one respective retaining device with at least one retaining spring is disposed on two edges far apart from each other of the cover panel, and / or in which at least two retaining springs are disposed on one edge of the cover panel.

19. Panel element according to any of the preceding claims, characterized in that the cover panel is at least partially made of metal.

20. Cladding for a ceiling and / or wall, characterized in that it has at least one fixing support that can be attached to a ceiling and / or wall and is held in the position of use, and having at least one panel element in accordance with any of the preceding claims, wherein, in its position of use, the panel element is held in the fixing support by means of its at least one retaining spring.

21. Coating according to the preceding claim, characterized in that the retaining spring is engaged in the fixing support and / or in that the fixing support is a retaining profile.

22. Coating according to any of claims 20 or 21, characterized in that the fixing support has at least one retaining hole for each retaining spring, in particular in that at least one retaining hole, preferably each retaining hole, is assigned at least one clamping housing to receive a hook-shaped end of a spring leg of a retaining spring.

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