Building panel adapted to be mounted at roof or wall of room and method of manufacturing same

Abstract

The fabric (7) extends architecturally between the frame profile members (6). Each edge (8) of the fabric is attached to a corresponding frame profile member by means of a tensioning profile member (9), which is resiliently biased into a tensioned state. Each edge of the fabric is provided with a plurality of retaining elements (11) which are flexibly arranged relative to each other along the edge of the fabric. Each retaining element comprises an engagement portion (12) for insertion through an open slot (13) of the channel into the longitudinal channel (10) of the tensioning profile member. In the tensioned state of the fabric, the tensioning force of the fabric acts on each retaining element such that the rotational torque attempts to rotate the engagement portion about the longitudinal axis of the channel and thereby force the engagement portion of each retaining element into locking engagement with the channel.

Description

Technical Field

[0001] The invention relates to a building panel which is suitable for installation at the ceiling or wall of a room, so that the frame of the building panel has a side facing the room and a side facing the building, wherein the frame comprises a peripheral frame formed by frame profile members, wherein a fabric extends between the frame profile members on the side of the frame facing the room, wherein each edge of the fabric is attached to the corresponding frame profile member by means of at least one tensioning profile member which is elastically biased to be displaced in a tensioning direction transversely to the frame profile member, thereby bringing the fabric into tension, and wherein the tensioning profile member has a longitudinal channel to which the edge of the fabric is releasably connected. Background Art

[0002] EP 1 559 846 A1 discloses a panel for hanging a ceiling or the like, comprising a frame defining an open area covered by a fabric. The frame is provided with laterally displaceable attachment members, accessible from outside the frame, at least along a portion of its periphery, for attaching the fabric to the frame. Lateral displacement of the members away from the lower peripheral edge of the frame results in tensioning of the fabric over the open area of ​​the frame. The fabric is secured to the laterally displaceable attachment members by means of spring clips that are inserted into grooves in the attachment members, clamping the fabric and thereby securing it in the grooves. When the fabric is installed in this manner, excess fabric is cut off adjacent to the grooves. The fabric can be removed from the panel by pulling the springs out of the grooves. However, in practice, it is not possible to reattach the same piece of fabric, for example after washing it, because the edges of the fabric will have already been completely adhered to the panel, and the assembly method requires a certain amount of excess fabric.

[0003] DE 23 32 688 A1 discloses an example of mounting a flexible material under a roof, wherein one edge of the flexible material is wrapped around a rail having a rectangular cross-section. The rail is inserted into a U-shaped groove of a mounting element attached to the roof, whereby the rail is angled in the groove and thus retained. However, this document does not address the elastically biased tensioning of the flexible material.

[0004] EP 1 045 369 A1 discloses attaching a fabric to a top metal rod using a plurality of circular cross-section elements, with the plurality of elements being attached to the edges of the fabric. To attach the fabric to the metal rod, the circular cross-section elements are sequentially introduced into a longitudinal channel in the metal rod from one end of the channel. However, since the attachment elements need to be sequentially introduced into the longitudinal channel from one end of the channel, this method of attaching the fabric is not suitable for building panels having a peripheral frame to which the fabric is attached.

[0005] EP 0 481 260 B1 discloses a connection for attaching the edge of a flat wall element to a retaining element having an undercut longitudinal groove. The edge of the flat wall element is provided with a series of small circular tongues that can be laterally inserted into the undercut groove by twisting them about a diametrical axis. It is crucial that the tongues are resiliently mounted on the edge of the flat wall element, i.e., they can be temporarily pivoted about the diametrical axis into a position that allows for lateral insertion into the groove, and that they automatically return to their original position after pivoting. However, this attachment method is not suitable for stretching and tensioning fabric on building panels, as the resiliently mounted tongues would not be able to withstand the tensioning forces of the fabric.

[0006] FR 1 518 396 A discloses a method for attaching a flexible false top using a zipper. The first portion of the zipper is formed on the edge of the flexible false top, while the second portion of the zipper is formed on a frame attached to the edge of the fixed top. However, this document does not involve elastically biased tensioning of the flexible material.

[0007] EP 1 276 091 B1 discloses a flexible retainer for retaining a flexible marking surface to a marking frame. The retainer comprises a single-piece elongated body having a latching block and a latching plate hingedly connected to the latching block for clamping the edge of the flexible marking surface. A pair of pivoting flanges are provided on the exterior of the flexible retainer for engaging with grooves in the marking frame. These pivoting flanges are symmetrical relative to one another about a clamping axis defined by the latching block and the latching plate. However, this document does not address the elastically biased tensioning of the flexible material. Summary of the Invention

[0008] It is an object of the present invention to provide a building panel that allows easy removal and subsequent reassembly of the tensioned fabric.

[0009] With this purpose in mind, each edge of the fabric is provided with a plurality of retaining elements, the plurality of retaining elements being flexibly arranged relative to one another along the edge of the fabric, each retaining element comprising an engaging portion adapted to be inserted into the longitudinal channel in a transverse insertion direction of the channel through an open slot of the channel, and, in a tensioned state of the fabric, the tensioning force of the fabric acts on each retaining element inserted into the longitudinal channel, thereby generating a rotational torque which attempts to rotate the engaging portion about the longitudinal axis of the channel and thereby forces the engaging portion of each retaining element to lockingly engage with the channel.

[0010] In this way, because the tensioning force of the fabric acts to stably hold the edges of the fabric's channels fixed to the corresponding tensioning profiles, the fabric can be easily removed from the building panel and subsequently reassembled by first releasing and then activating the panel's tensioning mechanism. The pre-installed retaining elements on the fabric ensure easy assembly of the fabric. Indeed, the provision of retaining elements flexibly arranged relative to one another along the fabric's edges allows the entire fabric to be creased, making fabric handling easier. Thus, for example, the fabric can be washed in a washing machine before being reassembled on the panel.

[0011] In an embodiment, the longitudinal channel is provided with a protrusion along a first edge of the open slot of the longitudinal channel, and when the fabric is tensioned, the engaging portion of each retaining element is retained within the longitudinal channel by the protrusion. Therefore, before and until the fabric is tightened by activating the tensioning mechanism of the panel, the fabric can be conveniently installed on the panel because the engaging portions of the retaining elements can be more easily positioned and retained within the longitudinal channel. By pressing the engaging portions of the retaining elements into the channel with the aid of, for example, a screwdriver or similar tool, the engaging portions can be captured behind the protrusion of the open slot and retained there until the fabric is tightened.

[0012] In an embodiment, the transverse insertion direction of the longitudinal channel is oriented transversely to the tensioning direction of the corresponding tensioning profile-member. Thus, it is ensured that the tension of the fabric acts on each retaining element to generate a sufficiently large rotational torque to retain the engaging portion of each retaining element in the channel.

[0013] Preferably, in order to generate a sufficiently large rotational torque, the transverse insertion direction of the longitudinal channel forms an angle of between 20 and 160 degrees, preferably between 40 and 140 degrees, more preferably between 60 and 120 degrees and most preferably between 80 and 100 degrees with the tensioning direction of the corresponding tensioning profile member.

[0014] In an embodiment, the engaging portion of each retaining element is adapted to be inserted into the longitudinal channel with the longitudinal direction of the engaging portion pointing along the transverse insertion direction of the channel, and the engaging portion is adapted to be pushed into locking engagement with the channel at a position where the longitudinal direction of the engaging portion forms an angle with the transverse insertion direction of the channel.

[0015] In an embodiment, the opening slot of the longitudinal channel has a minimum width, the engaging portion of each retaining element has a longitudinal direction, the retaining element is adapted to be displaced along the longitudinal direction during insertion of the engaging portion into the longitudinal channel, the engaging portion of each retaining element has a maximum width along a direction extending transversely to the longitudinal direction of the corresponding edge of the fabric or the longitudinal direction of the edge of the strip attached to the edge of the fabric and transversely to the longitudinal direction of the engaging portion, and the maximum width of the engaging portion is smaller than the minimum width of the opening slot of the longitudinal channel. Thus, it can be ensured that the engaging portion of the retaining element can be easily inserted into the longitudinal channel through the opening slot without having to twist, press, or manipulate the engaging portion of the retaining element in any other way.

[0016] In a structurally particularly advantageous embodiment, the longitudinal channel has a first side wall, a second side wall and a bottom wall opposite to the opening groove, the engaging portion of each retaining element has a front end, a rear end, a first side wall and a second side wall, and in the inserted position of the engaging portion in the longitudinal channel, the front end of the engaging portion is arranged opposite to the bottom wall of the longitudinal channel, the first side wall of the engaging portion is arranged opposite to the first side wall of the longitudinal channel, and the second side wall of the engaging portion is arranged opposite to the second side wall of the longitudinal channel.

[0017] In an embodiment, in the inserted position of the engagement portion in the longitudinal channel, the engagement portion of each retaining element is prevented from freely rotating about any longitudinal axis of the channel of the tensioning profile-member due to at least the engagement between the first side wall of the engagement portion and the first side wall of the longitudinal channel, and / or due to the engagement between the second side wall of the engagement portion and the second side wall of the longitudinal channel. Thus, the aforementioned rotational torque generated to lock the engagement portion of each retaining element in the channel may result in engagement and / or friction forces generated between the first side wall of the engagement portion of the retaining element and the first side wall of the longitudinal channel, and / or between the second side wall of the engagement portion of the retaining element and the second side wall of the longitudinal channel. The engagement and / or friction forces may effectively retain the engagement portion of each retaining element fixed in the channel.

[0018] In a particularly advantageous embodiment, the rear end of the engaging portion of each retaining element is fixed to the corresponding edge of the fabric or to the edge of a strip attached to the edge of the fabric. According to this embodiment, the engaging portion of each retaining element can constitute the entire retaining element, but it can also alternatively form only a part of the retaining element.

[0019] In a further structurally particularly advantageous embodiment, the longitudinal channel is provided with a protrusion along a first edge of the opening slot of the longitudinal channel, and the rear end of the engaging part is supported on the protrusion of the longitudinal channel in the inserted position of the engaging part in the longitudinal channel.

[0020] In an embodiment, a respective strip is attached to each edge of the fabric, and a retaining element is provided at the edge of each respective strip. Thus, cutting the fabric to size and attaching the retaining element can be facilitated because prefabricated strips with the retaining element attached thereto can be used. The strips can, for example, be sewn onto the edges of the fabric.

[0021] In an embodiment, the retaining elements are spaced apart from one another. Thus, the better the flexibility that can be achieved between adjacent retaining elements, the easier it is to handle the fabric due to the better flexibility of the edges of the fabric provided with the retaining elements, thereby enabling crimping of the entire fabric.

[0022] In one embodiment, each retaining element is fixed in such a manner that it is at least substantially prevented from rotating relative to the fabric about an axis that extends longitudinally through the retaining element and that extends transversely to the respective edge of the fabric or to the edge of the strip attached to the edge of the fabric. This ensures that the engagement portion of the retaining element cannot escape from the open slot of the longitudinal channel by rotating relative to the fabric about this axis. This can also be achieved in other ways, depending on the dimensions of the engagement portion in the longitudinal direction of the edge of the fabric or the respective edge of the strip attached to the edge of the fabric.

[0023] In a particularly advantageous structural embodiment that is easy to manufacture, each retaining element is in the form of a metal element that is clamped onto a corresponding edge of the fabric or onto the edge of a strip attached to the edge of the fabric. For example, the strip provided with the retaining elements can be provided in the form of one half of a standard metal zipper of a conventional zipper style, in the form of a single metal piece that is molded and arranged at regular intervals on the zipper strip.

[0024] In an embodiment, each frame profile member has a rounded outer edge, which connects the room-facing side of the frame profile member with the building-facing side of the frame profile member, the fabric is bent around the rounded outer edges of the frame profile members, and the edges of the fabric are fixed to the building-facing side of the respective frame profile member.

[0025] The invention also relates to a method for producing a building panel suitable for installation on a ceiling or at a wall of a room, so that the frame of the building panel has a side facing the room and a side facing the building, the frame comprising a peripheral frame formed by frame profile members, wherein each edge of the fabric is attached to a corresponding frame profile member by means of at least one tensioning profile member by releasably connecting the edge of the fabric with a longitudinal channel of the tensioning profile member, and the fabric extends between the frame profile members on the side of the frame facing the room by elastically biasing the tensioning profile member so that the tensioning profile member is displaced in the transverse direction of the frame profile member and thereby put into tension.

[0026] The method is characterized in that a plurality of retaining elements are provided for each edge of the fabric, the plurality of retaining elements being flexibly arranged relative to each other along the edge of the fabric; an engaging portion of each retaining element is inserted into the longitudinal channel through an open slot of the channel along a transverse insertion direction of the channel; and the engaging portion of each retaining element is retained in the channel by means of a rotational torque which attempts to rotate the engaging portion about the longitudinal axis of the channel of the tensioning profile member and thereby forces the engaging portion of each retaining element into locking engagement with the channel, the rotational torque being generated by the tensioning force of the fabric acting on each retaining element. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The invention will now be explained in more detail hereinafter by way of examples of embodiment with reference to the accompanying highly schematic drawings, in which:

[0028] Figure 1 is a cross-sectional view through an embodiment of a building panel according to the present invention;

[0029] Figure 2 On a large scale Figure 1 Details;

[0030] Figure 2A It is magnified Figure 2 Details;

[0031] Figure 2B and Figure 2C is with Figure 2A corresponding views, but of different embodiments of the invention;

[0032] Figures 3 to 8 yes Figure 1 A perspective view of a partial cross-section of a building panel showing different stages of a process for attaching and tensioning a fabric of the building panel;

[0033] Figures 9 to 12 is with Figures 3 to 8A perspective view corresponding to that of , but showing different stages of the process of releasing the tension in the fabric and removing the fabric of the building panel;

[0034] Figure 13 It is the process of connecting two frame profile members and corner members to form Figure 1 a plan view of two frame profile members and a portion of a corner member before the construction panel is formed;

[0035] Figure 14 Is to Figure 13 a perspective view of the corner piece and the two frame profile members after the corner piece is connected to one of the two frame profile members;

[0036] Figure 15 Seen from different perspectives Figure 14 a perspective view of the connected corner pieces and frame profile members;

[0037] Figure 16 is Figure 13 a perspective view of the corner piece and the two frame profile members after the corner piece is connected to the two frame profile members;

[0038] Figure 17 Another perspective of the structure after the building panels are placed on the fabric. Figure 16 A perspective view of a corner member of the peripheral frame of the building panel shown in FIG, wherein the fabric is to be extended on the room-facing side of the structure;

[0039] Figure 18 yes Figure 17 A top view of the corner member and fabric shown in FIG;

[0040] Figures 19 to 22 yes Figure 17 and Figure 18 A perspective view of a corner piece and fabric shown in , showing different stages of the process of assembling the fabric at the corner piece;

[0041] Figure 23 and Figure 24 is a perspective view of a corner member for connecting frame profile members of a building panel in the prior art, seen from different angles;

[0042] Figure 25 yes Figure 23 and Figure 24 A top view of a prior art corner component;

[0043] Figure 26 and Figure 27are perspective views of a corner member for connecting frame profile members of a building panel according to an embodiment of the present invention, seen from different viewing angles; and

[0044] Figure 28 yes Figure 26 and Figure 27 A top view of the corner component. DETAILED DESCRIPTION

[0045] In the following, similar elements of different embodiments are generally indicated by the same reference numerals.

[0046] Figure 1 An embodiment of a building panel 1 according to the invention is shown which is suitable for installation at the ceiling or wall of a room (not shown) so that the frame 2 of the building panel has a side 3 facing the room and a side 4 facing the building. For example, it can be noted that if Figures 1 to 12 If the building panel 1 shown in FIG is used as a roof panel, the building panel 1 must be turned upside down. Thus, the building panel 1 can form a suspended roof below the permanent roof in the building.

[0047] The frame 2 comprises a peripheral frame 5 formed by frame profile members 6 and a fabric 7 extending between the frame profile members 6 on the side 3 of the frame 2 facing the room. Each edge 8 of the fabric 7 is attached to the corresponding frame profile member 6 by means of at least one tensioning profile member 9, which is elastically biased by means of a U-shaped elastic spring 14 to be stretched in a tensioning direction D transverse to the frame profile member 6. T The fabric 7 is shifted so as to enter a tensioned state. Tensioning direction D T exist Figures 2A to 2C The tensioning profile member 9 has a longitudinal channel 10 to which the edge 8 of the fabric 7 is releasably connected. It can be noted that some faces of the frame profile member 6 have been provided with recesses 56 in order to reduce light reflections. It can also be noted that for soundproofing reasons, the frame 5 can be surrounded by one or more batts of mineral wool 57, such as Figures 3 to 12 The building panel 1 can generally be formed as a sound insulation panel.

[0048] Each edge 8 of the fabric 7 is provided with a plurality of mutually spaced retaining elements 11 , which are flexibly arranged relative to each other along the edge 8 of the fabric 7 . Figures 2A to 2C Each retaining element 11 comprises an engaging portion 12 adapted to pass through an opening slot 13 of the channel in a transverse insertion direction D of the channel. IAs can be seen, in the embodiment shown, in the final insertion position of the engagement portion 12 of each retaining element 11 in the longitudinal channel 10, the engagement portion 12 is blocked from any longitudinal axis A of the channel 10 around the tensioning profile-member 9. L Free Spins. Figure 3 The longitudinal axis A of the channel 10 is shown in L .

[0049] As will be explained in further detail below, the retaining elements 11 can be secured directly to the edges 8 of the fabric 7, or the retaining elements 11 can be secured to a strip 18 mounted on the edges 8 of the fabric 7, for example by sewing. Furthermore, it should be noted that in the illustrated embodiment, the retaining elements 11 can be separate elements that are spaced apart from one another and distributed along the respective edges 8 of the fabric 7. Thus, good flexibility can be achieved between adjacent retaining elements 11, and due to the greater flexibility of the edges of the fabric provided with the retaining elements, handling of the fabric 7 can be made easier, thereby enabling creasing of the entire fabric.

[0050] However, despite being separate and possibly spaced apart elements, the retaining elements 11 may also be connected to one another by means of flexible elements, spring-like elements or the like, in addition to the connections formed between the retaining elements 11 by means of the edges 8 of the fabric 7 or the edges 19 of the strips 18. Typically, the retaining elements 11 may be arranged along the edges 8 of the fabric 7 at a density of about 100 to 500 per meter, preferably at a density of about 200 to 450 per meter, more preferably at a density of about 300 to 440 per meter, most preferably at a density of about 400 to 430 per meter, such as, for example, at a density of about 420 per meter. Typically, at the point of attachment of the retaining elements 11 to the strip 18 mounted on the edge 8 of the fabric 7, or at the point of attachment of the retaining elements 11 to the edge 8 of the fabric 7, the mutual distance between adjacent retaining elements 11 is at least ½ of the width of each retaining element 11 measured in the longitudinal direction of the edge 8 of the fabric 7 at the attachment point, preferably at least ⅔ of the width of each retaining element 11, and most preferably at least equal to the width of each retaining element 11. Alternatively, each retaining element 11 may form part of an elongated element extending along the edge 8 of the fabric 7. For example, each retaining element 11 may be formed as part of a spring-like element, formed, for example, by a thread or wire made of metal or plastic. In the case of a thread or wire made of plastic, the spring-like element may be injection molded. The engagement portion 12 of each such retaining element 11 may be suitably formed for being urged into locking engagement with the channel 10.

[0051] It should be noted that, according to the embodiment shown, adjacent retaining elements 11 are spaced apart relative to one another so as to provide good flexibility of the entire edge 8 of the fabric 7. However, flexibility can be achieved between adjacent retaining elements 11 even if portions of adjacent retaining elements 11 are in contact with one another. For example, the edge 8 of the fabric 7 can be elastic, and / or the edges of the retaining elements 11 that are in contact with one another can be rounded, so that the edge 8 of the fabric 7 can bend or the edge 19 of the strip 18 that is attached to the edge 8 of the fabric 7 can bend.

[0052] The handling of the fabric 7 is facilitated by the provision of retaining elements 11 which are flexibly arranged relative to one another along the edges 8 of the fabric 7, thereby enabling creasing of the entire piece of fabric 7. Thus, for example, the fabric 7 can be washed in a washing machine before being refitted to the panel 1.

[0053] As in Figures 2A to 2C As further indicated in FIG, in the tensioned state of the fabric 7, the tension F of the fabric 7 T Acting on each holding element 11, a rotational torque M is generated R , the rotation torque M R Try to make the engaging portion 12 surround the longitudinal axis A of the channel 10 of the tensioning profile-member 9 L The engagement portion 12 of each retaining element 11 is rotated and thereby forced into locking engagement with the channel 10 .

[0054] exist Figure 2A In the embodiment shown, the longitudinal channel 10 is provided with a protrusion 15 along the first edge 16 of the opening slot 13 of the longitudinal channel 10, and in the tensioned state of the fabric 7, the engaging portion 12 of each retaining element 11 is retained in the longitudinal channel 10 by means of the protrusion 15. As can be seen, the first side of the rear end 24 of the engaging portion 12 is supported on the protrusion 15. In addition, it can be noted that according to this embodiment, during the insertion of the engaging portion 12 into the longitudinal channel 10, the longitudinal direction D of the engaging portion 12 of the retaining element 11 is not L Transverse insertion direction D of the channel 10 I Aligned, while in the tensioned state of the fabric 7, the longitudinal direction D of the joining portion 12 L Transverse insertion direction D of the channel 10 I In other words, according to the present embodiment, in order for the engaging portion 12 to enter the longitudinal channel 10, the longitudinal direction D of the engaging portion 12 is L The insertion direction D of the channel 10 must be the same as the I Alignment, such as Figure 2A However, when the engagement portion 12 has been inserted into the longitudinal channel 10 and when the tensioning profile-member 9 is tensioned in the tensioning direction D by means of the elastic spring 14T When the fabric 7 is shifted upward to enter a tensioned state, the tension F of the fabric 7 is generated. T Acting on each holding element 11, a rotational torque M is generated R , the rotation torque M R The engaging portion 12 is brought around a suitable longitudinal axis A of the channel 10 of the tensioning profile-member 9 L Rotate to Figure 2A , in which the retaining element 11 is prevented from rotating further and the rear end 24 of the engagement portion 12 is supported on the projection 15 , thereby holding the engagement portion 12 of the retaining element 11 in the channel 10 .

[0055] Before the fabric 7 is tightened by activating the tensioning mechanism of the building panel 1 and until the fabric 7 is tightened, the fabric 7 can be easily mounted on the building panel 1 due to the projections 15, since the engaging portion 12 of the retaining element 11 can be more easily positioned and retained in the longitudinal channel 10. By pressing the engaging portion 12 of the retaining element 11 into the channel 10 with the aid of, for example, a screwdriver 55 or a similar tool, the engaging portion 12 can be caught behind the projections 15 of the open slot 13 and retained there until the fabric 7 is tightened.

[0056] like Figure 2A As shown in FIG, in the embodiment shown, the tension F of the fabric 7 generated T In the longitudinal direction D of the joint portion 12 L The corresponding direction acts on the retaining element 11. This is because the edge 19 of the strip 18 attached to the edge 8 of the fabric 7 is bent around the rounded edge of the protrusion 15, so that the tension of the fabric 7 is the tension F shown in the figure. T 11. As can be seen and as described in further detail below, the edge 19 of the strip 18 carries the retaining element 11. It can be noted that Figure 2A In the case shown, the longitudinal axis A of the channel 10 of the tensioning profile-member 9 is suitably L Between the attachment of the retaining element 11 and the edge 19 of the strip 18 and the first side wall 21 of the longitudinal channel 10, the engagement portion 12 is subjected to the rotational torque M R Around the longitudinal axis A L The engaging portion 12 is biased in a rotatable manner, but is prevented from rotating about the longitudinal axis A. L However, the longitudinal axis A of the channel 10 is preferably L The position of can be varied depending on the configuration of the rounded edge of the projection 15, the configuration of the channel 10 and its orientation, and the exact configuration of the retaining element 11, among other factors. Likewise, depending on similar factors, Figure 2A In the embodiment shown in FIG, the tension F of the fabric 7 generated T It is possible to act on the retaining element 11 in different directions than the one shown. Thus, according to this embodiment, the tensioning force F generated T The direction of the joint portion 12 is the same as the longitudinal direction D L In particular, it can be noted that according to Figure 2A In the embodiment shown, the tension force F T The direction of insertion D of the channel 10 I Preferably, the angle is between 5 degrees and 35 degrees, more preferably between 10 degrees and 30 degrees, and most preferably between 15 degrees and 25 degrees. In the embodiment shown, the angle is about 18 degrees to 22 degrees.

[0057] It can be noted that in Figure 2A In the illustrated embodiment, the longitudinal channel 10 is provided with projections in the form of projections 15 only along a first edge 16 of the opening slot 13 of the longitudinal channel 10. As can be seen in the figure, a second edge 17 of the opening slot 13, opposite the first edge 16 of the opening slot 13, is not provided with projections. In other words, the second side wall 22, opposite the first side wall 21 of the longitudinal channel 10, forms the second edge 17 of the opening slot 13, without any recesses formed at this second edge 17. Consequently, subsequent removal of the engaging portion 12 from the longitudinal channel 10 is facilitated, as during removal, the engaging portion 12 can simply be pressed in the direction of the second side wall 22 of the longitudinal channel 10. This can facilitate, for example, the washing of fabrics in a washing machine.

[0058] Reference Figure 2B and Figure 2C In the embodiment shown in FIG, the longitudinal direction D of the engaging portion 12 of the retaining element 11 is maintained during the insertion of the engaging portion 12 into the longitudinal channel 10 and in the subsequent tensioning of the fabric 7. L Transverse insertion direction D of the channel 10 I In fact, according to these embodiments, the longitudinal direction D of the engagement portion 12 L The change is small due to the tension of the fabric 7. Figure 2B In the embodiment shown, as can be seen, this is due to the maximum width W of the engagement portion 12 MAX Only slightly smaller than the minimum width W of the opening slot 13 of the longitudinal channel 10 MIN .according to Figure 2C In the embodiment shown, as can be seen, this is due to the maximum width W of the engagement portion 12 MAXThe thickness of the strip 18 attached to the edge of the fabric 7 is only slightly less than the minimum width W of the opening slot 13 of the longitudinal channel 10. MIN As can be seen, according to this embodiment, the retaining element 11 is attached to one side of the edge 19 of the strip 18 .

[0059] As mentioned above, according to Figure 2A In the embodiment shown in FIG, in the tensioned state of the fabric 7, the engaging portion 12 of each retaining element 11 is retained in the longitudinal channel 10 by means of the protrusion 15 arranged along the first edge 16 of the opening slot 13 of the longitudinal channel 10, wherein the rear end 24 of the engaging portion 12 is supported on the protrusion 15. However, it should be noted that according to Figure 2B In the embodiment shown, in the tensioned state of the fabric 7, due to the above-mentioned rotation torque M R and the geometry of the engagement portion, the engagement portion 12 of each retaining element 11 is retained within the longitudinal channel 10. In addition, friction is generated between the engagement portion 12 and the side walls of the channel 10. Similarly, according to Figure 2C In the embodiment shown, in the tensioned state of the fabric 7, due to the rotational torque M R and the geometry of the engagement portion, the engagement portion 12 of each retaining element 11 is retained in the longitudinal channel 10. Also in this embodiment, friction is generated between the engagement portion 12 and the first side wall of the channel 10 and between the strip 18 and the second side wall of the channel 10.

[0060] Furthermore, as can be seen, according to Figure 2B and Figure 2C In the embodiment shown in FIG, the tension F of the fabric 7 is generated. T In the longitudinal direction D of the joint portion 12 L forming an acute angle with the insertion direction D of the channel 10 I The retaining element 11 is acted upon in a direction forming an acute angle. Preferably, the angle is an acute angle, because in this case, due to the geometry, the retaining element 11 can be firmly held in the channel 10 even without any friction between the engagement portion 12 and the channel 10. However, the angle can also be a right angle or even an obtuse angle.

[0061] It can be noted that, except for Figures 2A to 2C Other embodiments than those shown in are conceivable. Figure 2A In the embodiment shown, the retaining element 11 can be used with Figure 2C Attached to the first side of the edge 19 of the strip 18 or the edge 8 of the fabric 7 in the same manner as shown in FIG. Figure 2A and Figure 2C In the embodiment shown, the retaining element 11 can be used with Figure 2CThe same means are shown alternatively attached to a second side of the edge 19 of the strip 18 opposite the first side or to the edge 8 of the fabric 7 .

[0062] exist Figures 2A to 2C In all the embodiments shown, the transverse insertion direction D of the longitudinal channel 10 is I The tensioning direction D points to the corresponding tensioning profile-member 9 T Therefore, the tension F of the fabric 7 can be ensured. T Acting on each holding element 11, thereby generating a sufficiently large rotational torque M R , so as to retain the engagement portion 12 of each retaining element 11 in the channel 10.

[0063] Preferably, in order to generate a sufficiently large rotational torque M R , the transverse insertion direction D of the longitudinal channel 10 I The tensioning direction D of the corresponding tensioning profile-member 9 T An angle of between 20 and 160 degrees is formed, preferably between 40 and 140 degrees, more preferably between 60 and 120 degrees, and most preferably between 80 and 100 degrees.

[0064] exist Figures 2A to 2C In the embodiment shown, as described above, the opening slot 13 of the longitudinal channel 10 has a minimum width W MIN As also mentioned above, during the insertion of the engagement portion 12 into the longitudinal channel 10, the retaining element 11 is adapted to be moved along the longitudinal direction D of the engagement portion 12. L The engagement portion 12 of each retaining element 11 has a maximum width W in the following direction MAX : This direction extends transversely to the longitudinal direction of the corresponding edge 8 of the fabric 7 or transversely to the longitudinal direction of the edge 19 of the strip 18 attached to said edge of the fabric 7, and this direction extends transversely to the longitudinal direction D of the joining portion 12 L As will be understood, in the mounted position of the fabric 7, the longitudinal direction of the respective edge 8 of the fabric 7 or of the edge 19 of the strip 18 attached to said edge of the fabric 7 is parallel to either longitudinal axis A of the channel 10 of the tensioning profile-member 9 L Extension, such as Figure 3 The maximum width W of the joint portion 12 is shown. MAX Smaller than the minimum width W of the opening slot 13 of the longitudinal channel 10 MINThus, it can be ensured that the engagement portion 12 of the retaining element 11 can be easily inserted into the longitudinal channel 10 through the opening slot 13 without having to twist, press or manipulate the engagement portion 12 of the retaining element 11 in any other way. In particular, the retaining element 11 can be easily inserted into the longitudinal channel 10 through the opening slot 13 without having to rotate the retaining element 11 approximately in the transverse insertion direction D of the longitudinal channel 10. I The axis on which the cam is rotated is twisted.

[0065] like Figure 2A As shown in , the longitudinal channel 10 has a first side wall 21, a second side wall 22 and a bottom wall 20 opposite to the opening groove 13. The engaging portion 12 of each retaining element 11 has a front end 23, a rear end 24, a first side wall 25 and a second side wall 26. In the inserted position of the engaging portion 12 in the longitudinal channel 10, the front end 23 of the engaging portion 12 is arranged opposite to the bottom wall 20 of the longitudinal channel 10, the first side wall 25 of the engaging portion 12 is arranged opposite to the first side wall 21 of the longitudinal channel 10, and the second side wall 26 of the engaging portion 12 is arranged opposite to the second side wall 22 of the longitudinal channel 10. It can be noted that in Figure 2A In the embodiment shown, the engaging portion 12 constitutes the entire retaining element 11, whereas Figure 2B and Figure 2C In the embodiment shown, the engagement portion 12 forms part of the retaining element 11 .

[0066] In addition, Figures 2A to 2C In the embodiment shown, in the inserted position of the engagement portion 12 in the longitudinal channel 10, the engagement portion 12 of each retaining element 11 is prevented from moving about any longitudinal axis A of the channel 10 of the tensioning profile-member 9 at least due to the engagement between the first side wall 25 of the engagement portion 12 and the first side wall 21 of the longitudinal channel 10 and / or due to the engagement between the second side wall 26 of the engagement portion 12 and the second side wall 22 of the longitudinal channel 10. L Therefore, the above-mentioned rotation torque M generated in order to hold the engaging portion 12 of each retaining element 11 in the channel 10 is R An engagement and / or friction force may be generated between the first side wall 25 of the engagement portion 12 of the retaining element 11 and the first side wall 21 of the longitudinal channel 10, and / or between the second side wall 26 of the engagement portion 12 of the retaining element 11 and the second side wall 22 of the longitudinal channel 10. The engagement and / or friction force may effectively retain the engagement portion 12 of each retaining element 11 fixed in the channel 10.

[0067] In the embodiment shown, as in Figures 2A to 2CAs can be seen in FIG, a respective strip 18 is attached to each edge 8 of the fabric 7 and a retaining element 11 spaced apart from one another is provided at the edge 19 of each respective strip 18. The strips 18 can be attached by means of Figure 2A and Figure 18 The seams 62 shown in FIG are attached to the edges 8 of the fabric 7, or the strips 18 can be attached to the edges 8 by any other suitable means, such as glue. Thus, cutting the fabric 7 to size and installing the retaining elements 11 can be facilitated, since prefabricated strips 18 can be used with the retaining elements 11 mounted thereon. In the embodiment shown, each retaining element 11 can be in the form of a metal element that is clamped onto the corresponding edge 8 of the fabric 7 or onto the edge 19 of the strip 18 attached to said edge 8 of the fabric 7.

[0068] The strip 18 with the attached retaining element 11 can advantageously be in the form of one of the two corresponding zipper strips of a conventional zipper, which is provided with zipper teeth. The zipper strips can be provided with separate metal pieces that are molded and arranged at regular intervals along the zipper strips. The teeth of a metal zipper can be made of, for example, brass, aluminum, or nickel. However, plastic materials can also be used for the teeth.

[0069] However, the mutually spaced retaining elements 11 may alternatively be attached directly to the edge 8 of the fabric 7 .

[0070] exist Figure 2A In the embodiment shown, the rear end 24 of the engaging portion 12 of each retaining element 11 is fixed to the edge 19 of the strip 18 attached to the edge 8 of the fabric 7. However, the rear end 24 of the engaging portion 12 of each retaining element 11 may alternatively be attached directly to the edge 8 of the fabric 7.

[0071] Preferably, each retaining element 11 is fixed in such a way that it is at least approximately prevented from rotating relative to the fabric 7 about an axis extending longitudinally through the retaining element 11 and transversely to the corresponding edge 8 of the fabric 7 or to the edge 19 of the strip 18 attached to said edge 8 of the fabric 7. Figure 2A In the embodiment, the axis extending through the holding element 11 in the longitudinal direction is also in the longitudinal direction D of the engagement portion. L This means that each retaining element 11 cannot surround Figure 2A The longitudinal direction D shown in L The pivoting thus ensures that the engaging portion 12 of the retaining element 11 cannot escape from the open slot 13 of the longitudinal channel 10 by rotating relative to the fabric 7 about this axis.

[0072] In the embodiment shown, each frame profile member 6 has a rounded outer edge 27, which connects a side 28 of the frame profile member 6 facing the room with a side 29 of the frame profile member 6 facing the building. The fabric 7 is bent around the rounded outer edge 27 of the frame profile member 6, and the edge 8 of the fabric 7 is fixed to the side 29 of the respective frame profile member 6 facing the building.

[0073] According to an embodiment of the method for producing a building panel 1 according to the invention, the method comprises: extending a fabric 7 between frame profile members 6 on the side 3 of the framework 2 facing the room; attaching each edge 8 of the fabric 7 to a corresponding frame profile member 6 by means of at least one tensioning profile member 9; releasably connecting said edge 8 of the fabric 7 to a longitudinal channel of the tensioning profile member 9; and elastically biasing the tensioning profile member 9 so that it is displaced in the transverse direction of said frame profile member 6, thereby bringing the fabric 7 into tension. Furthermore, an embodiment of the method comprises: providing each edge 8 of the fabric 7 with a plurality of retaining elements 11, which are flexibly arranged relative to one another along the edges 8 of the fabric 7; and in a transverse insertion direction D of the channel 10. I On the other hand, the engaging portion 12 of each retaining element 11 is inserted into the longitudinal channel 10 through the opening slot 13 of the channel 10; and, by means of a rotational torque M R , the engagement portion 12 of each retaining element 11 is held in the channel, the rotational torque M R Try to make the engaging portion 12 surround the longitudinal axis A of the channel 10 of the tensioning profile-member 9 L The rotation torque M R The tension F exerted by the fabric 7 on each retaining element 11 T produce.

[0074] exist Figures 3 to 8 1 shows the different steps of the above-described embodiment of the method for producing a building panel 1 . Figures 9 to 12 The different steps of removing the fabric 7 from the building panel 1 are shown, for example in order to clean the fabric 7. The fabric 7 can then be removed by Figures 3 to 8 The same method shown is again used for mounting on the building panel 1 .

[0075] Figures 13 to 22 An embodiment of a building panel 1 according to the invention is shown. Figure 16As seen in FIG, adjacent frame profile members 6 are connected to each other by means of respective corner members 30. Each corner member 30 has an oblique groove 31 formed between opposite wall portions 32, 33 of the corner member 30 and extending at an oblique angle relative to the longitudinal direction of each of the respective adjacent frame profile members 6. Figures 18 to 22 As shown, excess fabric 34 at the respective corners 35 of the panel 1 is inserted into the slots 31 of the corner pieces 30 and retained by means of the resilient members 38 .

[0076] Each corner piece 30 forms, at least together with the adjacent frame profile member 6, an internal cavity 36 of the corresponding corner 35 of the panel 1. The internal cavity 36 extends transversely from both sides of at least a part of the length of the groove 31 of the corner piece 30, behind the opposite wall parts 32, 33 of the corner piece 30. When inserted into the internal cavity 36 of the corresponding corner 35 of the panel 1, the excess fabric 34 at each corner 35 of the panel 1 forms an at least partially tubular shape 37, which extends to both sides of the groove 31 in the internal cavity 36 of the corner 35 of the panel 1. Figure 22 As can be seen in FIG, the elastic member 38 is arranged in an at least partially tubular shape 37 formed by the excess fabric 34. Thus, all or at least a large part of the excess fabric 34 can be received and retained in a flexible and elastic manner at the corners 35, thereby ensuring a flat surface of the fabric 7 and further allowing easy removal and subsequent reassembly of the tensioning fabric 7.

[0077] Due to the elastic properties of the arrangement of the elastic members 38 in the at least partially tubular shape 37 formed by the excess fabric 34, a flat surface of the fabric 7 can be maintained at the corner pieces 30 even if the fabric 7 generally stretches over time or generally shrinks due to washing of the fabric 7. In this case, the elastically biased tensioning profile members 9 can be arranged in the tensioning direction D of the fabric 7. T The upward displacement, thereby generally compensating for stretching or shrinking, however, according to prior art embodiments, may result in an uneven arrangement of the fabric 7 at the corners 35 of the building panel 1 .

[0078] It should be noted that, although the corner pieces 30 are shown as forming right angles between adjacent frame profile members 6 in the typical case where the peripheral frame 5 of the building panel 1 is formed by four frame profile members 6, the corner pieces 30 may also form different angles. For example, if the peripheral frame 5 of the building panel 1 is formed by six frame profile members 6, each corner piece 30 may form an angle of 120 degrees. However, of course, the corner pieces 30 may also form different angles between their corresponding adjacent frame profile members 6.

[0079] like Figure 26 and Figure 27As shown, each of the opposing wall portions 32, 33 of the corner member 30 has an inner surface 39 and an outer surface 40 that are at least generally planar and at least generally parallel.

[0080] like Figure 26 As shown, each of the opposing wall portions 32, 33 of the corner member 30 has a maximum thickness t measured between the inner surface 39 and the outer surface 40 of the wall portion 32, 33. max .like Figure 28 As shown, the inclined slot 31 formed between the opposite wall portions 32, 33 of the corner member 30 has a minimum width w min , and the maximum thickness t of each of the wall portions 32, 33 max Smaller than the minimum width w of the chute 31 min , preferably smaller than the minimum width w of the chute 31 min 1 / 2, more preferably less than the minimum width w of the chute 31 min 1 / 3, most preferably less than the minimum width w of the chute 31 min Therefore, sufficient space for the excess fabric 34 can be formed in the inner cavity 36 of the corner portion 35 of the building panel 1, while the flat surface of the fabric 7 can be maintained at the corner member 30.

[0081] like Figure 22 As shown, the excess fabric 34 forming the at least partially tubular shape 37 in the form of a tubular channel abuts the corresponding inner surfaces 39 of the opposite wall parts 32, 33 of the corner part 30. As a result, the excess fabric 34 can be held in a stable manner. Preferably, the at least partially tubular shape 37 formed by the excess fabric 34 also abuts the following surface: the surface is formed by the corresponding adjacent frame profile member 6 and forms the inner face 64 of the inner cavity 36. As a result, the excess fabric 34 can be held in an even more stable manner. Although it is not clearly visible in the figure, it can be understood that when facing as shown Figure 22 In the orientation shown, the at least partially tubular shape 37 formed by the excess fabric 34 at each corner 35 of the panel 1 generally has an at least partially tapered profile in a direction from the open top to the bottom of the at least partially tubular shape 37. Figure 21 and Figure 22 As seen in FIG, the at least partially tubular shape 37 preferably has a generally non-circular cross-sectional form. The cross-sectional form of the at least partially tubular shape 37 can generally follow the inner wall of the interior cavity 36 of the excess fabric 34 that forms the at least partially tubular shape 37.

[0082] Compare Figure 1 、 Figure 16 、 Figure 26 and Figure 27It will be appreciated that each of the opposing wall portions 32, 33 of the corner member 30 extends at an oblique angle relative to the general plane P of the building panel 1. The general plane P of the building panel 1 is as shown in FIG. Figure 1 Thus, the fabric 7 at the corner 35 of the panel 1 can appropriately abut the opposing wall portions 32 , 33 , thereby matching the form of the portion of the edge 8 of the fabric 7 attached to the resiliently biased profile-member 9 , so that a flat surface can be obtained in the area of ​​the corner 35 .

[0083] like Figure 22 As can be seen in FIG. 3 , the resilient member 38 has the form of a coil spring. In its relaxed state, the coil spring has a diameter at least approximately equal to or greater than the minimum width w of the oblique slot 31 of the angled member 30. min Thus, it can be ensured that the excess fabric 34 is properly held at the corners 35 of the building panel 1. The coil springs are Figure 22 Although only partially visible in the drawing, it can be understood that the resilient member 38 in the form of a coil spring extends to both sides of the groove 31 in the interior cavity 36 of the corner 35 of the panel 1. This ensures that the excess fabric 34 is properly retained at the corner 35 of the building panel 1 even better. The coil spring can be easily removed from its position within the at least partially tubular form 37 formed by the excess fabric 34 within the interior cavity 36 of the corner 35, for example, in the event that the fabric 7 must be cleaned or repaired. For example, the coil spring can be removed with the aid of a screwdriver 55. Although in the illustrated embodiment, the resilient member 38 is in the form of a coil spring, any suitable resilient element, such as an elastic hoop or a foam or rubber block, may be used.

[0084] exist Figure 22 In the embodiment shown, in the installed position of the resilient member 38 in the form of a coil spring within the interior cavity 36 of the corner portion 35, the resilient member 38 in the form of a coil spring is still somewhat deformed relative to its relaxed state. This may be preferred in order to better hold the excess fabric 34 in place within the interior cavity 36. However, the coil spring still extends to either side of the slot 31 in the interior cavity 36.

[0085] As will be appreciated, in order to insert the resilient member 38 in the form of a coil spring through the slot 31 and into the interior cavity 36 of the corner portion 35, the spring should preferably be slightly compressed from its relaxed state. Figures 20 to 22 As can be seen, the excess fabric 34 is inserted through the slot 31, preferably with the aid of a tool such as a screwdriver 55, so that the excess fabric 34 forms an at least partially tubular shape 37 extending to either side of the slot 31 into the interior cavity 36. At this stage, as Figure 21As shown, excess fabric 34 forms an opening through slot 31 of corner piece 30, i.e., an opening in the form of a slot is formed in the at least partially tubular shape 37 formed by excess fabric 34. The coil spring can be inserted through this opening, or the coil spring can be inserted through an opening visible at the top of the at least partially tubular shape 37. In either case, the spring should preferably be slightly compressed from its relaxed state, at least during its insertion through slot 31. In the case where the coil spring is inserted through the slot formed in the at least partially tubular shape 37, the coil spring can be deformed by tilting the coil spring windings so that the coil spring windings form an oblique angle with respect to the longitudinal axis of the coil spring.

[0086] like Figures 13 to 16 As shown, each corner piece 30 has a first leg 41 which is inserted into the end 42 of a first adjacent frame profile member 6 and a second leg 43 which is inserted into the end 44 of a second adjacent frame profile member 6 .

[0087] In addition, refer to Figure 14 and Figure 26 , the portion 45 of the first leg 41 of the corner piece 30 is inserted into the first groove 46 of the portion 47 forming the rounded outer edge 27 of the first adjacent frame profile member 6. Correspondingly, the portion 48 of the second leg 43 of the corner piece 30 is inserted into the second groove 49 of the portion 50 forming the rounded outer edge 27 of the second adjacent frame profile member 6. The first wall portion 32 of the opposite wall portion of the corner piece 30 is connected to the portion 45 of the first leg 41 of the corner piece 30 through the longitudinal opening of the first groove 46. Correspondingly, the second wall portion 33 of the opposite wall portion of the corner piece 30 is connected to the portion 48 of the second leg 43 of the corner piece 30 through the longitudinal opening of the second groove 49.

[0088] like Figure 26 As seen in FIG. 1 , the first wall portion 32 of the opposite wall portions of the corner piece 30 is connected to the portion 45 of the first leg 41 of the corner piece 30 by means of a first intermediate wall portion 51 which forms an angle A with the first wall portion 32 of the opposite wall portion. W Correspondingly, the second wall portion 33 of the opposite wall portion of the corner piece 30 is connected to the portion 48 of the second leg 43 of the corner piece 30 by means of a second intermediate wall portion 52 which forms an angle A with the second wall portion 33 of the opposite wall portion. W .

[0089] As in Figures 26 to 28 As seen in FIG, the oblique groove 31 of each corner member 30 is partially formed between the first intermediate wall portion 51 and the second intermediate wall portion 52 of the corner member 30.

[0090] As in Figures 13 to 20and in Figures 26 to 28 As can be seen in FIG, each corner piece 30 has an extension 53 between its first leg 41 and second leg 43. When the corner piece 30 is connected to an adjacent frame profile member 6, the extension 53 forms a smooth transition between the outer surface of the corner piece 30 itself and the rounded outer edge 27 of the corresponding adjacent frame profile member 6.

[0091] In the embodiment shown, the corner pieces 30 form the outer part of the corresponding corner 35 of the building panel 1. The adjacent frame profile members 6 themselves form part of the corner of the building panel 1 and are further connected to each other by means of additional corner brackets 60, such as Figure 13 However, in an alternative embodiment, each corner member 30 may form the entire corner of the corresponding corner portion 35, extending from the inner peripheral edge portion to the outer peripheral edge portion of the peripheral frame 5 of the framework 2. Figures 19 to 22 As can be seen in FIG, the ends of the strips 18 attached to the respective edges 8 of the fabric 7, which meet at the corners 35 of the building panel 1, comprise a few retaining elements 11 which are not inserted into the longitudinal channels 10 of the respective tensioning profile-members 9. This is because the respective tensioning profile-members 9 do not extend all the way to the corners 35 of the building panel 1. However, the combined tensioning forces of the tensioning profile-members 9 and of the spring members 38 inserted into the at least partially tubular form 37 formed by the excess fabric 34 at the corners 35 of the building panel 1 act to appropriately extend and stretch the fabric 7, thereby forming a smooth corner 35, as shown in particular at FIG. Figure 22 The few retaining elements 11 not inserted into the longitudinal channel 10 are actually superfluous and can be omitted; however, they are retained for ease of production.

[0092] Figures 23 to 25 A prior art corner piece 30 for connecting frame profile members of a building panel 1 is shown. The prior art corner piece 30 has a groove 31 formed between the block-shaped wall portions 58, 59 of the corner piece 30, into which excess fabric 34 is inserted. However, due to the limited space available in groove 31, it may not be possible to fit all of the excess fabric 34 at the corner 35 of the panel 1 into the groove 31. Therefore, a portion of the excess fabric 34 is typically cut off, and the remainder is inserted into the groove 31. In this case, the fabric is typically secured in the groove with the aid of glue. However, this approach makes it impossible to remove the fabric 7 of the building panel 1 from the panel 1 and reattach it, for example, after cleaning the fabric 7. This is because the fabric 7 is tightly cut to fit the groove 31 of the prior art corner piece 30 and is glued to the groove 31.

[0093] According to an embodiment of the method for manufacturing a building panel 1 according to the present invention, the method comprises: connecting adjacent frame profile members 6 to each other by means of corner pieces 30; bending the fabric 7 around the rounded outer edges 27 of the frame profile members 6; inserting excess fabric 34 into an oblique groove 31 formed between opposing portions 32, 33 of the respective corner piece 30 at each respective corner 35 of the panel 1; and retaining the excess fabric 34 by inserting a resilient member 38. Furthermore, an embodiment comprises: arranging the excess fabric 34 at each respective corner 35 of the panel 1 to form an at least partially tubular shape 37 extending to either side of the groove 31 in the inner cavity 36 of the respective corner 35 of the panel 1; and arranging the resilient member 38 within the at least partially tubular shape 37 formed by the excess fabric 34.

[0094] In the following, some steps of a preferred method for producing a building panel 1 according to the invention are explained.

[0095] The framework 2 comprising the peripheral frame 5 is formed by frame profile members 6 comprising respective elastically biased tensioning profile members 9, wherein adjacent frame profile members 6 are connected to one another by means of corner pieces 30, such as Figures 13 to 16 as well as Figures 26 to 28 shown.

[0096] The fabric 7 is cut to shape and provided with retaining elements 11 along the edges 8 of the fabric 7. The fabric 7 is now placed on a flat surface and the frame 2 of the building panel is placed on top of the fabric 7 with the side 3 of the frame 2 facing the room pointing downwards towards the fabric 7, as shown in FIG. Figure 18 If not already done, now, for example with the aid of a screwdriver 55, remove the elastically biased tensioning profile member 9 from Figure 2 The fabric tensioning position shown is shifted to Figure 3 The release position shown is shown in which each resiliently biased tensioning profile-member 9 is relatively closer to the rounded outer edge 27 of the corresponding frame profile-member 6 and the U-shaped elastic spring 14 is compressed more in the release position than in the fabric-tensioning position of the resiliently biased tensioning profile-member 9. Each resiliently biased tensioning profile-member 9 is held in the release position of the tensioning profile-member 9 by inserting a plurality of Z-brackets 54 into the grooves 63 of the resiliently biased tensioning profile-member 9. As can be seen, the Z-brackets 54 rest against the edge of the corresponding frame profile-member 6. In Figures 3 to 7 During the step of , the resiliently biased tensioning profile-member 9 is held in the respective release position of the tensioning profile-member 9 by means of the Z-bracket 54 .

[0097] It can be noted that Figures 1 to 12 The building board 1 in Figures 13 to 22 The view is upside down.

[0098] Now refer to Figure 4 , it can be seen that the fabric 7 is bent around the rounded outer edge 27 of the frame profile member 6. Figure 5 and Figure 6 , it can be seen that, with the aid of a screwdriver 55 , the retaining elements 11 of the fabric 7 are positioned in the corresponding longitudinal channels 10 of the tensioning profile-member 9 . Figure 7 , all necessary retaining elements 11 of the fabric 7 have been positioned in the corresponding longitudinal channels 10. Subsequently, the Z-bracket 54 is removed from the building panel 1, so that the elastically biased tensioning profile-member 9 is released and the tensioning profile-member 9 is displaced from the tensioning profile-member 9 release position to the fabric tensioning position of the tensioning profile-member 9 by means of the corresponding U-shaped elastic springs 14 of the tensioning profile-member 9. The fabric 7 is now in the position shown in FIG. Figure 8 and Figure 2 Shown in tensioned state.

[0099] At this stage, if Figure 19 As shown, the building panel 1 is ready to be fitted with excess fabric 34 at the corners 35 of the panel. First, the excess fabric 34 at each corner is inserted into the inner cavity 36 of the corresponding corner 35 of the panel 1, for example with the aid of a screwdriver 55, as shown in FIG. Figure 20 Now press Figure 21 Finally, a resilient member 38 in the form of a coil spring is arranged in the at least partially tubular shape 37 formed by the excess fabric 34 within the interior cavity 36 of the corner 35. Figure 22 As shown, the fabric 7 is now fully tensioned and fitted flat at the corner 35 of the panel 1 .

[0100] If at a later stage the fabric 7 needs to be cleaned or repaired, the fabric 7 can be removed from the frame 2 of the building panel by first removing the coil spring and excess fabric 34 from the inner cavity 36 of the corner 35, for example with the aid of a screwdriver 55. Subsequently, the following Figures 9 to 12 step in order to completely remove the fabric 7 from the framework 2 of the building panel. Figure 9 In , the elastically biased tensioning profile-member 9 has been displaced from its fabric-tensioning position into its release position, for example by means of a screwdriver 55. Figure 10 In the embodiment, the elastically biased tensioning profile-member 9 is held in its released position by inserting a plurality of Z-brackets 54 into the grooves 63 of the elastically biased tensioning profile-member 9. Figure 11 and Figure 12As shown, the retaining elements 11 of the fabric 7 can now be removed by hand, for example, with the aid of a screwdriver 55, from the corresponding longitudinal channels 10 of the tensioning profile members 9. The fabric 7 has now been completely removed from the frame 2 of the building panel and, due to the flexibility of the edges 8 of the fabric 7 provided with the retaining elements 11, can be washed in a washing machine (not shown). Subsequently, the fabric 7 can be reinstalled on the frame 2 of the building panel according to the procedure described above.

[0101] It may be noted that although a complete procedure for installing the fabric 7 on the frame 2 of the building panel 1 is outlined above, not all steps of the outlined procedure are necessary in order to install the fabric 7 on the frame 2 of the building panel 1. For example, Figures 3 to 8 The general installation procedure for mounting the edges 8 of the fabric 7 to the corresponding frame profile members 6 of the panels shown in FIG is itself an independent invention which can be used in the absence of Figures 17 to 22 In the case of the method of assembling the excess fabric 34 at the corner 35 of the panel 1, it is adopted. Figures 23 to 25 The method of the corner member 30 of the prior art shown in FIG is to fit the fabric at the corner 35. However, in this case, if the excess fabric 34 is cut to fit the shape and the remaining excess fabric 34 is glued to the groove 31 of the corner member 30 of the prior art, the fabric 7 may not be easily removed and refitted on the panel 1 again. On the other hand, as Figures 17 to 22 The general method of assembling excess fabric 34 at the corner 35 of the panel 1 as shown in FIG is also an independent invention in itself and can be used in the absence of Figures 3 to 8 In this case, the conventional mounting method for attaching the edges 8 of the fabric 7 to the corresponding frame profile members 6 of the panel is not employed. Alternatively, the edges 8 of the fabric 7 can be attached to the corresponding frame profile members 6 of the panel according to the above-described prior art method (not shown). However, in this case, the fabric 7 may not be easily removed from the panel 1 and reattached to it again, since the fabric 7 may have been cut closely to the dimensions of the panel frame 2 and since the fabric 7 may have been fitted with rigid edge strips that do not allow the edges 8 of the fabric 7 to be folded over.

[0102] Reference Signs List

[0103] A W Angle between wall sections

[0104] A L Longitudinal axis of the channel of the tensioning profile-member

[0105] D I Transverse insertion direction of the longitudinal channel

[0106] DL Longitudinal direction of the joint portion

[0107] D T Tensioning direction of the tensioning profile element

[0108] F T Tension of the fabric on the retaining element

[0109] M R Rotational torque

[0110] P Overall plane of building panels

[0111] t max Maximum thickness of the opposing wall portion of the corner piece

[0112] w min Minimum width of chute

[0113] W MAX Maximum width of the joint

[0114] W MIN Minimum width of the opening slot

[0115] 1 Building panels

[0116] 2 Structure of building panels

[0117] 3 Side of the frame facing the room

[0118] 4 The side of the structure facing the building

[0119] 5. The Peripheral Framework of the Architecture

[0120] 6 Frame profile members

[0121] 7 Fabric

[0122] 8. Fabric edges

[0123] 9 Tension profile elements

[0124] 10 Longitudinal channel for tensioning profile elements

[0125] 11. Retaining element

[0126] 12 Engaging portion of retaining element

[0127] 13-channel open slot

[0128] 14 elastic spring

[0129] 15 Protrusion of longitudinal channel

[0130] 16 First edge of the opening slot

[0131] 17 Second edge of the opening slot

[0132] 18 strips

[0133] 19 Edge of the strip

[0134] 20 Bottom wall of longitudinal channel

[0135] 21 First side wall of longitudinal channel

[0136] 22 Second side wall of longitudinal channel

[0137] 23 Front end of the joint

[0138] 24 Rear end of the joint

[0139] 25 first side wall of the joint portion

[0140] 26 Second side wall of the joint portion

[0141] 27 Rounded outer edges of frame profile members

[0142] 28 Side of frame profile member facing the room

[0143] 29 The side of the frame profile member facing the building

[0144] 30 Corner components

[0145] 31 Angle slot

[0146] 32, 33 Opposite wall portions of corner components

[0147] 34 Excess fabric at the corners of panels

[0148] 35 Corner of plate

[0149] 36 Internal cavity of the corner of the plate

[0150] 37 At least partially tubular shape formed from excess fabric

[0151] 38 elastic member

[0152] 39 Inner surface of the wall portion of the corner member

[0153] 40 Outer surface of the wall portion of the corner member

[0154] 41 First leg of corner member

[0155] 42 End of first adjacent frame profile member

[0156] 43 Second leg of corner member

[0157] 44 End of the second adjacent frame profile member

[0158] 45 The first leg of the corner member

[0159] 46 A first groove forming a portion of the rounded outer edge

[0160] 47 The portion forming the rounded outer edge

[0161] 48 The second leg portion of the corner member

[0162] 49 Second groove forming part of the rounded outer edge

[0163] 50 The portion forming the rounded outer edge

[0164] 51 first intermediate wall portion

[0165] 52 second intermediate wall portion

[0166] 53 Corner member extension

[0167] 54 Z-type bracket

[0168] 55 screwdriver

[0169] 56 Recessed portion of frame profile member

[0170] 57 Mineral Wool

[0171] 58, 59 Block wall portion of corner component

[0172] 60 Additional corner brackets

[0173] 61 zigzag seam

[0174] 62 seam

[0175] 63 Grooves for inserting Z-brackets

[0176] 64 The interior surface of the internal cavity.

Claims

1. A building panel (1) adapted to be mounted on a ceiling or wall of a room, such that the frame (2) of the building panel has a side (3) facing the room and a side (4) facing the building, wherein: The framework (2) comprises a peripheral frame (5) formed by frame profile members (6), wherein a fabric (7) extends between the frame profile members (6) on the room-facing side (3) of the framework (2), wherein each edge (8) of the fabric (7) is attached to a corresponding frame profile member (6) by means of at least one tensioning profile member (9), said tensioning profile member (9) being elastically biased to extend in a tensioning direction (D) transverse to the frame profile members (6). T ) is displaced on the fabric (7), thereby bringing the fabric (7) into a tensioned state, and wherein the tensioning profile member (9) has a longitudinal channel (10), the edge (8) of the fabric (7) being releasably connected to the longitudinal channel (10), characterized in that each edge (8) of the fabric (7) is provided with a plurality of retaining elements (11), a plurality of retaining elements (11) being flexibly arranged relative to each other along the edge (8) of the fabric (7), and each retaining element (11) comprises an engaging portion (12), the engaging portion (12) being adapted to pass through an opening slot (13) of the channel in a transverse insertion direction (D) of the channel I ) is inserted into the longitudinal channel (10), and, in the tensioned state of the fabric (7), the tensioning force (F T ) acts on each retaining element (11) inserted into the longitudinal channel (10), thereby generating the following rotational torque (M R ): the rotational torque (M R ) attempts to orient the engagement portion (12) around the longitudinal axis (A) of the channel (10) L ) is rotated and thereby forces the engagement portion (12) of each retaining element (11) into locking engagement with the channel (10).

2. The building panel according to claim 1, wherein The longitudinal channel (10) is provided with a protrusion (15) along a first edge (16) of the opening slot (13) of the longitudinal channel (10), and wherein, in the tensioned state of the fabric (7), the engaging portion (12) of each retaining element (11) is retained in the longitudinal channel (10) via the protrusion (15).

3. The building panel according to claim 1 or 2, wherein: The transverse insertion direction (D I ) is the tensioning direction (D) of the respective tensioning profile-member (9) T ) is pointed in the horizontal direction.

4. A building panel according to any one of the preceding claims, wherein The engaging portion (12) of each retaining element (11) is adapted to be arranged in a longitudinal direction (D L ) along the transverse insertion direction (D) of the channel I ) is inserted into the longitudinal channel (10) with the direction thereof pointed, and wherein the engaging portion (12) is adapted to be inserted into the longitudinal channel (10) with the direction thereof pointed L ) and the transverse insertion direction (D I ) is pushed into locking engagement with said channel (10).

5. A building panel according to any one of the preceding claims, wherein The opening slot (13) of the longitudinal channel (10) has a minimum width (W MIN ), wherein the engagement portion (12) of each retaining element (11) has a longitudinal direction (D L ), the retaining element (11) is adapted to be moved along the longitudinal direction (D) during the insertion of the engaging portion (12) into the longitudinal channel (10) L ) displacement, wherein the engagement portion (12) of each retaining element (11) has a maximum width (W) along the following direction MAX ): the maximum width (W MAX ) extends in a direction transverse to the longitudinal direction of the corresponding edge (8) of the fabric (7) or transverse to the longitudinal direction of the edge (19) of the strip (18) attached to the edge (8) of the fabric (7), and the maximum width (W MAX ) is along a direction transverse to the longitudinal direction (D L ) extends, and wherein the maximum width (W MAX ) is smaller than the minimum width (W) of the opening slot (13) of the longitudinal channel (10) MIN ).

6. A building panel according to any one of the preceding claims, wherein The longitudinal channel (10) has a first side wall (21), a second side wall (22) and a bottom wall (20) opposite to the opening groove (13), wherein the engaging portion (12) of each retaining element (11) has a front end (23), a rear end (24), a first side wall (25) and a second side wall (26), wherein, in the inserted position of the engaging portion (12) in the longitudinal channel (10), the front end (23) of the engaging portion (12) is arranged opposite to the bottom wall (20) of the longitudinal channel (10), the first side wall (25) of the engaging portion (12) is arranged opposite to the first side wall (21) of the longitudinal channel (10), and the second side wall (26) of the engaging portion (12) is arranged opposite to the second side wall (22) of the longitudinal channel (10).

7. The building panel according to claim 6, wherein: In the inserted position of the engagement portion (12) in the longitudinal channel (10), the engagement portion (12) of each retaining element (11) is prevented from moving around any longitudinal axis (A) of the channel (10) of the tensioning profile-member (9) at least due to the engagement between the first side wall (25) of the engagement portion (12) and the first side wall (21) of the longitudinal channel (10) and / or due to the engagement between the second side wall (26) of the engagement portion (12) and the second side wall (22) of the longitudinal channel (10). L ) Free Spins.

8. The building panel according to claim 6 or 7, wherein: The rear end (24) of the engaging portion (12) of each retaining element (11) is fixed to the corresponding edge (8) of the fabric (7) or to the edge (19) of a strip (18) attached to the edge (8) of the fabric (7).

9. The building panel according to any one of claims 6 to 8, wherein The longitudinal channel (10) is provided with a protrusion (15) along a first edge (16) of the opening slot (13) of the longitudinal channel (10), and wherein, in the inserted position of the engaging portion (12) in the longitudinal channel (10), the rear end portion (24) of the engaging portion (12) is supported on the protrusion (15) of the longitudinal channel (10).

10. A building panel according to any one of the preceding claims, wherein A respective strip (18) is attached to each edge (8) of the fabric (7), and wherein the retaining element (11) is provided at an edge (19) of each respective strip (18).

11. A building panel according to any one of the preceding claims, wherein The retaining elements (11) are spaced apart from each other.

12. A building panel according to any one of the preceding claims, wherein Each retaining element (11) is fixed in such a manner that it is at least approximately prevented from rotating relative to the fabric (7) about an axis that extends longitudinally through the retaining element (11) and that extends transversely to the corresponding edge (8) of the fabric (7) or to the edge (19) of a strip (18) attached to the edge (8) of the fabric (7).

13. A building panel according to any one of the preceding claims, wherein Each retaining element (11) has the form of a metal element that is clamped onto a corresponding edge (8) of the fabric (7) or onto an edge (19) of a strip (18) attached to the edge (8) of the fabric (7).

14. A building panel according to any one of the preceding claims, wherein Each frame profile member (6) has a rounded outer edge (27) connecting the room-facing side (28) of the frame profile member (6) with the building-facing side (29) of the frame profile member (6), wherein the fabric (7) is bent around the rounded outer edge (27) of the frame profile member (6), and wherein the edge (8) of the fabric (7) is fixed to the building-facing side (29) of the respective frame profile member (6).

15. A method for producing a building panel (1) suitable for installation at the ceiling or wall of a room, wherein the frame (2) of the building panel (1) has a side (3) facing the room and a side (4) facing the building, the frame (2) comprising a peripheral frame (5) formed by frame profile members (6), whereby each edge (8) of the fabric (7) is attached to a corresponding frame profile member (6) by means of at least one tensioning profile member (9) by releasably connecting the edge (8) of the fabric (7) to a longitudinal channel (10) of the tensioning profile member (9), and the fabric (7) extends between the frame profile members (6) on the room-facing side (3) of the frame (2) by elastically biasing the tensioning profile member (9) so that the tensioning profile member (9) is displaced in a transverse direction of the frame profile member (6) and thereby puts the fabric (7) into tension, the fabric (7) extending between the frame profile members (6) on the room-facing side (3) of the frame (2), characterized in that A plurality of retaining elements (11) are provided for each edge (8) of the fabric (7), and the plurality of retaining elements (11) are flexibly arranged relative to each other along the edge (8) of the fabric (7); and the engaging portion (12) of each retaining element (11) is inserted along the transverse insertion direction (D) of the channel (10) through the opening slot (13) of the channel (10). I ) is inserted into the longitudinal channel (10); and, by means of a rotational torque (M R ) holds the engagement portion (12) of each retaining element (11) in the channel, the rotational torque (M R ) attempts to orient the engagement portion (12) around the longitudinal axis (A) of the channel (10) of the tensioning profile-member (9) L ) rotates, thereby forcing the engaging portion (12) of each retaining element (11) into locking engagement with the channel (10), the rotational torque (M R ) The tension (F) acting on each retaining element (11) by the fabric (7) T ) to produce.

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