System and method for manufacturing an architectural structure, as well as architectural structure

Abstract

A system 10 for constructing an architectural structure comprises a structural member 12 having a coupling side 16 opposite a rear face 14, a stiffener 20, and a blocking element 22. The coupling side 16 is provided with a coupling slot 24, an insertion opening 26, and a blocking opening 28. The coupling slot 24 has a longitudinal direction L and a coupling slot cross-section 30 perpendicular to the longitudinal direction. The coupling slot cross-section 30 diverges from the coupling side 16. The stiffener 20 includes a body 32 and a coupling element 40 that includes a coupling element cross-section 42. The coupling element 40 is longitudinally slidable from the insertion opening 26 into the coupling slot 24 to connect the structural member 12 and the stiffener 20 by means of a form fit between the coupling element and the coupling slot 24. The blocking element 22 is insertable into the blocking opening 28 for blocking a sliding of the first coupling element 40 against the longitudinal direction.

Description

[0001] Title: SYSTEM AND METHOD FOR MANUFACTURING AN ARCHITECTURAL

[0002] STRUCTURE, AS WELL AS ARCHITECTURAL STRUCTURE

[0003] The invention relates to a system for manufacturing an architectural structure according to the pre-characterising portion of claim 1, as well as an architectural structure according to the precharacterising portion of claim 17 and a process for manufacturing an architectural structure according to the pre-characterising portion of claim 20.

[0004] A system of this type is used to manufacture architectural structures, such as components for buildings, including floors, walls and ceilings. Walls in this context include internal and external walls, and ceilings also include horizontal and pitched roof structures.

[0005] A system of this type is well known. Structural members in the form of plywood sheets are provided to wooden beams that act as stiffeners. In practice, the plywood sheets are fastened by joining devices such as nails, screws or staples.

[0006] A drawback of the known system is that it is not sufficiently circular. Although the boards and beams are made of wood, the metal connectors create a mixture of wood and metal when the architectural structure is demolished. Thereby, the metal connectors cannot, or only with great difficulty, be separated from the wood and the wood cannot be reused.

[0007] The invention has the objective of eliminating this disadvantage, or at least providing an alternative. In particular, the invention has the objective of providing a system for manufacturing an architectural structure that is more circular than the prior art.

[0008] The invention achieves this goal by means of a system according to claim 1, a structural structure according to claim 17 and a method according to claim 20.

[0009] Embodiments are defined in the dependent claims.

[0010] A system for constructing an architectural structure comprises a structural member having a rear side and a coupling side opposite the rear side, a stiffener, connectable to the structural member to increase a bending stiffness of the structural member, and a blocking element for locking a connection between the stiffener and the structural member. The coupling side is provided with a coupling slot, an insertion opening in open connection with the coupling slot, and a blocking opening. The coupling slot has a longitudinal direction parallel to the coupling side and a coupling slot cross-section perpendicular to the longitudinal direction. The coupling slot crosssection diverges from the coupling side. The stiffener comprises a body and at least a first coupling element that extends from the body and that comprises a coupling element cross-section. The coupling element cross-section comprises the shape of the coupling element cross-section. The insertion opening is open towards the coupling side such that the first coupling element is insertable into the insertion opening in a direction perpendicular to the coupling side. The coupling slot is in through connection with the insertion opening in such a way that the first coupling element is movable in the longitudinal direction from the insertion opening into the coupling slot to connect the structural member and the stiffener by means of a form-fit between the first coupling element and the coupling slot. The blocking element is insertable into the blocking opening for blocking a sliding of the first coupling element against the longitudinal direction.

[0011] The coupling element and the coupling slot allow a connection without the use of separate connecting means, such as metal connecting means. This makes the system according to the invention more circular than systems of the prior art. As the coupling slot cross-section encloses the shape of the coupling element cross-section, a form fit is achieved by sliding the coupling element into the coupling slot. Thanks to the blocking element, this connection has a permanent or semipermanent character by preventing the coupling element from becoming dislodged from the coupling slot

[0012] In an embodiment, the coupling element cross-section corresponds to the coupling slot cross-section.

[0013] In an embodiment, the insertion opening comprises the blocking opening. This simplifies the structural members and the performing of the required operations on the structural members.

[0014] In an alternative embodiment, the blocking opening is provided separate from the insertion opening.

[0015] In an embodiment, the blocking opening is arranged to receive the blocking element sliding in a sliding direction perpendicular to the longitudinal direction. This results in robust blocking.

[0016] In particular, the sliding direction is also parallel to the coupling side.

[0017] In an embodiment, the blocking opening is provided with a ledge cooperating with the blocking element for restraining the blocking element in a direction perpendicular to the coupling side. This reduces the chance of the blocking element unintentionally moving out of the blocking opening, without the need for adhesive or other bonding means. This allows an assembled architectural structure to be disassembled into its individual components.

[0018] In an embodiment, the blocking opening includes a blocking opening cross-section that diverges from the coupling side and the blocking element comprises a cross-section corresponding to the blocking opening cross-section for forming a form-fitting connection between the blocking opening and the blocking element. This reduces the likelihood of the blocking element unintentionally moving out of the blocking opening, without the need for adhesives or other joining devices. This allows an assembled architectural structure to be disassembled into its individual components. In one embodiment, the blocking element is spring-loaded to the coupling element. In use, this spring-loaded connection enables simple insertion of the blocking element into the blocking opening, while the spring force ensures that the blocking element remains in the blocking opening. In addition, it is not necessary to provide the blocking element separately, thus reducing the total number of components required for an architectural structure.

[0019] In particular, the spring-loaded connection is formed by a plate-shaped part of the stiffener. This eliminates the need for separate springs.

[0020] In one embodiment, the structural member comprises a panel. Using a panel as a structural member, a closed structure can be manufactured relatively quickly, without the need for separate supports to be attached to separate plates.

[0021] In one embodiment, the body of the stiffener is plate-shaped. A plate-shaped stiffener is relatively light and easily allows the formation of strong double-walled structures, especially double-walled structures with a relatively large distance between the walls. This increases the insulation value.

[0022] In particular, the coupling element extends from an edge of, and in a same plane as, the body of the plate-shaped stiffener. This allows integration of the coupling element with the body.

[0023] In one embodiment, the stiffener is provided with multiple coupling elements. This results in a stronger connection or the possibility of connecting several structural members to one stiffener.

[0024] In an embodiment, the structural member comprises multiple coupling slots. This results in a stronger connection or the ability to connect multiple stiffeners to one structural member.

[0025] In an embodiment, the system includes a second structural member having a thickness and a through second coupling slot, wherein the stiffener includes an intermediate member connecting the coupling member to the body, wherein a dimension of the intermediate member in a direction from the body to the coupling member is at least equal to the thickness, such that the second structural member is receivable between the first structural member and the stiffener, and the first structural member and the second structural member are jointly connectable to the stiffener. The intermediate part of the stiffener allows multiple structural members to be attached to one another on one side of the stiffener. This is advantageous, for example, by fixing the first structural member as a rafter directly to a wall, ceiling or roof panel.

[0026] In an embodiment, at least one of the structural member and the stiffener is made of one of the list including MDF and plywood. Within this document, plywood also means three-layered plywood (in Dutch: triplex), including plywood and three-layered plywood with WBP (Water Boiled Proof) bonding. MDF and plywood are relatively strong and environmentally friendly building materials.

[0027] The invention further relates to an architectural structure manufactured from at least one structural member, a stiffener, and a blocking element of the system according to the claims.

[0028] In one embodiment, the structural member further comprises a third structural member connectable to the stiffener on one side of the body of the stiffener opposite the first connecting member for forming a double-sided structure such as a hollow wall, floor, or ceiling.

[0029] In an embodiment, the third structural member comprises a rear side and a coupling side opposite the rear side, which coupling side is provided with a coupling slot and an insertion opening in open communication with the coupling slot. The coupling slot has a longitudinal direction parallel to the coupling side and a coupling slot cross-section perpendicular to the longitudinal direction. The coupling slot cross-section diverges from the coupling side. The stiffener includes at least a second coupling element provided at the body opposite the first coupling element, with a coupling element cross-section. The coupling element cross-section corresponds to the coupling slot crosssection. The insertion opening is open towards the coupling side such that the second coupling element is insertable into the insertion opening in a direction perpendicular to the coupling side. The coupling slot is in through connection with the insertion opening in such a way that the second coupling element is slidable in the longitudinal direction from the insertion opening into the coupling slot to connect the third structural member and the stiffener by means of a form fit between the coupling element and the coupling slot. Thus, a double-walled construction is formed in which both walls are connected to the stiffener according to the invention.

[0030] A procedure for manufacturing an architectural structure, comprises the following steps: providing a system for manufacturing an architectural structure according to the invention, moving the stiffener relative to the structural member such that the coupling element is inserted into the insertion opening in the direction perpendicular to the coupling side, shifting of the stiffener relative to the structural member in the longitudinal direction of the coupling slot, and inserting the blocking element into the blocking opening for blocking a sliding of the coupling element against the longitudinal direction.

[0031] The invention, its effects, and advantages are explained in more detail on the basis of the attached drawing, in which: fig. 1 shows a perspective view of a first embodiment, fig. 2 shows a top view of the embodiment of fig. 1, Fig. 3 shows a cross-section along line III in Fig. 2,

[0032] Fig. 4 shows a cross-section along line IV in Fig. 2,

[0033] Fig. 5 shows a detail V from Fig. 4,

[0034] Fig. 6 shows a perspective view of a second embodiment, fig. 7 shows a top view of the embodiment of fig. 6,

[0035] Fig. 8 shows a cross-section along line VIII in Fig. 7 ,

[0036] Fig. 9 shows a cross-section along line IX in Fig. 7 ,

[0037] Fig. 10 shows a perspective view of a third embodiment,

[0038] Fig. 11 shows a top view of the embodiment of Fig. 10,

[0039] Fig. 12 shows a cross-section along line XII in Fig. 11,

[0040] Fig. 13 shows a cross-section along line XIII in Fig. 11,

[0041] Fig. 14 shows a cross-section along line XIV in Fig. 11, fig 15 shows a detail XV from fig 14,

[0042] Fig. 16 shows a perspective view of a fourth mode of execution, fig. 17 shows a detail of a longitudinal view of the embodiment of fig. 16, fig. 18 shows an architectural structure according to the fourth form of execution,

[0043] Fig. 19 shows a perspective view of a fifth mode of execution, fig. 20 shows a top view of the embodiment of fig. 19,

[0044] Fig. 21 shows a cross-section along line XXI in Fig. 20,

[0045] Fig. 22 shows a cross-section along line XXII in Fig. 20,

[0046] Fig. 23 shows a detail XXIII from Fig. 22,

[0047] Fig. 24 shows an architectural structure according to the fifth mode of execution,

[0048] Fig. 25 shows a perspective view of a sixth mode of execution,

[0049] Fig. 26 shows an architectural structure according to the sixth form of execution,

[0050] Fig. 27 shows a perspective view of a seventh embodiment, fig. 28 shows an architectural structure according to the seventh embodiment, fig. 29 shows a perspective view of an eighth form of execution, and fig. 30 shows an exploded view of a double-walled structure.

[0051] The figures show a system for constructing an architectural structure according to the invention, which in a first embodiment is indicated in its entirety by reference numeral 10.

[0052] The system 10 of the first embodiment is shown in Figures 1-5 and includes a structural member 12 with a rear side 14 and an coupling side 16 opposite therear side, a stiffener 20, and two blocking elements 22 for locking a connection between the stiffener and the structural member 12. The stiffener 20 is connectable to the structural member 12 to increase a bending stiffness of the structural member 12.

[0053] The structural member 12 of this embodiment is a structural plywood panel 23 suitable and intended for a building construction.

[0054] The coupling side 16 of this embodiment is provided with two coupling slots 24, each having an insertion opening 26 in open communication with the corresponding coupling slot 24, and a blocking opening 28. Each coupling slot 24 has a longitudinal direction L parallel to the coupling side 16 and a coupling slot cross-section 30 perpendicular to the longitudinal direction L (see Fig. 5). Both longitudinal directions L are parallel to each other. The coupling slot cross-section 30 diverges from coupling side 16. In this embodiment, the coupling slot cross-section 30 has the shape of a dovetail.

[0055] In this embodiment, the stiffener 20 is a plate-shaped stiffener made of plywood. It includes a plate-shaped body 32 with two flat sides 34, 36, an edge 38, and two coupling elements 40 extending from the edge 38 of the body 32. Each coupling element 40 includes a coupling element cross-section 42. The coupling element cross-section 42 corresponds to the coupling slot crosssection 30 and is also dovetailed in this embodiment.

[0056] Each insertion opening 26 is open towards the coupling side 16 such that the coupling element 40 is insertable into the insertion opening 26 in a direction P perpendicular to the coupling side 16. The coupling slot 24 is in through connection with the insertion opening 26 such that the coupling element 40 is slidable in the longitudinal direction L from the insertion opening 26 into the coupling slot 24 to connect by means of a form fit between the coupling element 40 and the coupling slot 24 the structural member 12 and the stiffener 20.

[0057] The blocking element 22 is insertable in the blocking opening 28. In this embodiment, the blocking element 22 is a rectangular block of wood and the insertion opening 26 comprises the blocking opening 28 and the blocking element 22 is insertable in the insertion opening 26. The blocking opening 28 is arranged to receive the blocking element 22 sliding in a sliding direction S perpendicular to the longitudinal direction and, in this embodiment, perpendicular to the coupling side 16 and therefore parallel to P.

[0058] After insertion of the blocking element 22, a sliding capability of the coupling element 40 is blocked against the longitudinal direction L. As a result, the coupling element 40 cannot slide back into the insertion opening 26 and the structural member 12 and the plate-shaped stiffener 20 are permanently or semi-permanently connected to each other. The blocking element 22 itself is clamped in the insertion opening 26, or fixed there by means of glue or a fastener such as a screw, or nail. In use, the coupling element 40 of the plate-shaped stiffener 20 of this embodiment is inserted in the direction P into the insertion opening 26. This brings the edge 38 against the coupling side 16. Next, the plate-shaped stiffener 20 is pushed in the direction L, causing the coupling elements 40 to slide into the coupling slot 24. Thanks to the dovetailed cross-sections 30 and 42 of the coupling elements 40 and the coupling slot 24, a form-fitting connection is created between the plywood panel 23 and the plywood sheet-shaped stiffener 20. Next, the blocking elements 22 are inserted into the blocking openings 28, preventing the coupling elements from sliding back into the insertion opening 26.

[0059] A second embodiment is shown in Figures 6-9. The system 110 comprises a structural member 112 having a rear side 114 and an opposite coupling side 116, a stiffener 120, and three blocking elements 122 for locking a connection between the stiffener and the structural member 112. The stiffener 120 is connectable to the structural member 112 to increase a bending stiffness of the structural member 112.

[0060] The structural member 112 of this embodiment is a structural plywood panel 123 suitable and intended for a building construction.

[0061] The coupling side 116 of this embodiment is provided with two coupling slots 124, each having an insertion opening 126 in open communication with the corresponding coupling slot 124, and three blocking openings 128. Each coupling slot 124 has a longitudinal direction L parallel to the coupling side 116 and a coupling slot cross-section 130 perpendicular to the longitudinal direction L (see Fig. 9). Both longitudinal directions L are parallel to each other. The coupling slot cross-section 130 diverges from the coupling side 116. In this embodiment, the coupling slot cross-section 130 has the shape of a dovetail.

[0062] In this embodiment, the stiffener 120 is a plate-shaped stiffener made of plywood. It includes a plate-shaped body 132 with two flat sides 134, 136, an edge 138, and two coupling elements 140 extending from the edge 138 of the body 132. Each coupling element 140 includes a coupling element cross section 142. The coupling element cross-section 142 corresponds to the coupling element cross-section 130 (see Fig. 9) and is also dovetailed in this embodiment.

[0063] Each insertion opening 126 is open towards the coupling side 116 such that the coupling element 140 is insertable into the insertion opening 126 in a direction P perpendicular to the coupling side 116. The coupling slot 124 is in through connection with the insertion opening 126 such that the coupling element 140 is slidable in the longitudinal direction L from the insertion opening 126 into the coupling slot 124 to connect the structural member 112 and the stiffener 120 by means of a form fit between the coupling element 140 and the coupling slot 124. Each blocking element 122 of this embodiment has a cylindrical shape and is insertable into the corresponding blocking opening 128. In this embodiment, the blocking openings 128 are correspondingly cylindrically shaped for this purpose. The blocking openings 128 are provided in the structural member 112 in one line with the insertion openings 126, at an oblique angle S relative to the coupling side 116 and perpendicular to the longitudinal direction L.

[0064] A length of the blocking opening 128 is shorter than a length of the corresponding blocking element 122. After insertion, the blocking element 122 remains protruding, blocking a sliding ability of the coupling element 140 against the longitudinal direction L. As a result, the coupling element 140 cannot slide back into the insertion opening 126 and the structural member 112 and the plateshaped stiffener 120 are permanently or semi-permanently connected to each other. The blocking element 122 itself is clamped in the insertion opening 126, is fixed there by glue, or remains in the insertion opening by gravity.

[0065] In use, the coupling element 140 of the plate-shaped stiffener 120 of this embodiment is inserted in the direction P the insertion opening 126. This brings the edge 138 against the coupling side 116. Next, the plate-shaped stiffener 120 is pushed in the direction L, causing the coupling elements 140 to slide into the coupling slot 124. Thanks to the dovetailed cross-sections 142 of the coupling elements 140 and 130 of the coupling slot 124, a form-fitting connection is created between the plywood panel 123 and the plywood sheet-shaped stiffener 120. Next, the blocking elements 122 are inserted into the blocking openings 128, preventing the coupling elements from sliding back into the insertion opening 126.

[0066] A third embodiment is shown in Figures 10-15. The system 210 includes a structural member 212 having a rear side 214 and an opposite coupling side 216, a stiffener 220, and one blocking element 222 for locking a connection between the stiffener and the structural member 212. The stiffener 220 is connectable to the structural member 212 to increase a bending stiffness of the structural member 212.

[0067] The structural member 212 of this embodiment is a structural plywood panel 223 suitable and intended for a structural construction. The coupling side 216 of this embodiment is provided with two coupling slots 224, each having an insertion opening 226 in open communication with the corresponding coupling slot 224. In this embodiment, the coupling side 216 is provided with a separate blocking opening 228 and a blocking opening entry slot 229 that is in open communication with the corresponding blocking opening 228.

[0068] Each coupling slot 224 has a longitudinal direction L parallel to the coupling side 216 and a coupling slot cross-section 230 perpendicular to the longitudinal direction L (see Fig. 12). Both longitudinal directions L are parallel to each other and run in the same line in this embodiment. The coupling slot cross-section 230 diverges from the coupling side 216. In this embodiment, the coupling slot cross-section 230 has the shape of a half dovetail.

[0069] In this embodiment, the stiffener 220 is a plate-shaped stiffener made of plywood. It includes a plate-shaped body 232 with two flat sides 234, 236, an edge 238, and two coupling elements 240 extending from the edge 238 of the body 232. Each coupling element 240 includes a coupling element cross-section 242. The coupling element cross-section 242 corresponds to the coupling element cross-section 230 (see Fig. 12) and, in this embodiment, has the shape of a half dovetail.

[0070] Each insertion opening 226 is open towards the coupling side 216 such that the coupling element 240 is insertable into the insertion opening 226 in a direction P perpendicular to the coupling side 216. The coupling slot 224 is in through connection with the insertion opening 226, such that the coupling element 240 is slidable in the longitudinal direction L from the insertion opening 226 into the coupling slot 224, to connect by means of a form fit between the coupling element 240 and the coupling slot 224 the structural member 212 and the stiffener 220.

[0071] In this embodiment, the blocking opening 228 is arranged to receive the blocking element 222 slidingly in a direction S parallel to the coupling side 216 and perpendicular to the longitudinal direction L. The blocking opening 228 includes a blocking opening cross-section 250 that diverges away from the coupling side 216 and, in this embodiment, has a dovetail shape (see Fig. 15). In this embodiment, the blocking opening 228 is provided with two ridges 252 cooperating with the blocking element 222 for stopping the blocking element 222 in a direction P perpendicular to the coupling side 216. The blocking element 222 of this embodiment has a dovetail shape and a crosssection 254 corresponding to the blocking opening cross-section 250 for forming a form-fitting connection between the blocking opening 228 and the blocking element 222. The dovetail shape of the blocking element 222 and the blocking opening 228 contributes to the connection between the stiffener 220 and the structural member 212.

[0072] The blocking element 222 of this embodiment is spring-loaded to the coupling elements 240, the spring-loaded connection being formed by two parts of the plate-shaped body 232 of the stiffener 220 on either side of the blocking element 222. The blocking element 222 is held in the blocking opening 228 under spring force by the spring action of the plate-shaped body 232.

[0073] The blocking opening entry slot 229 extends in the longitudinal direction L and is arranged to receive the blocking element 222 in a direction P perpendicular to the coupling side 216 and to guide the blocking element slidably to the blocking opening 228. The blocking opening entry slot 229 is in through connection with the blocking opening 228 such that the blocking element 222 is slidable in the sliding direction S from the blocking opening entry slot 229 into the blocking opening 228, thereby blocking a slideability of the coupling elements 240 against the longitudinal direction L. As a result, the coupling elements 240 cannot slide back into the respective insertion opening 226 and the structural member 212 and the plate-shaped stiffener 220 are permanently or semipermanently connected to each other

[0074] In use, the coupling element 240 of the plate-shaped stiffener 220 of this embodiment is pushed into the insertion opening 226 in direction P. With the same movement, the blocking element 222 is pushed in the direction P into the blocking opening entry opening 229. Thereby, the edge 238 comes into contact with the coupling side 216. Next, the plate-shaped stiffener 220 is pushed in the direction L, causing the coupling elements 240 to slide into the coupling slot 224. Thanks to the dovetailed cross-sections 230 and 242 of the coupling elements 240 and the coupling slot 224, a form-fitting connection is created between the plywood panel 223 and the plywood sheet-shaped stiffener 220. As the insertion opening 226 on one side makes an angle greater than 0° and less than 45° with respect to the longitudinal direction L, the coupling elements 240 move in the direction S, while the blocking element 222 is forced in the longitudinal direction L. This creates a spring force in the plate-shaped body 232 of the plate-shaped stiffener 220. At one end of the movement in the longitudinal direction L, the blocking element 222 is located in the blocking opening entry slot 229 opposite the blocking opening 228, causing the blocking element 222 to snap into the blocking opening 228 due to the spring force, preventing the coupling elements 240 from sliding back into the respective insertion openings 226.

[0075] A fourth embodiment is shown in Figures 16-18. The system 310 includes a structural member 312 having a rear side 314 and an opposite coupling side 316, a stiffener 320, and one blocking element 322 for locking a connection between the stiffener and the structural member 312. The stiffener 320 is connectable to the structural member 312 to increase a bending stiffness of the structural member 312.

[0076] The structural member 312 of this embodiment is a structural plywood panel 323 suitable and intended for a structural member. The coupling side 316 of this embodiment is provided with two coupling slots 324, each having an insertion opening 326 in open communication with the corresponding coupling slot 324. In this embodiment, the coupling side 316 is provided with a separate blocking opening 328 and a blocking opening entry slot 329 that is in open communication with the corresponding blocking opening 328.

[0077] Each coupling slot 324 has a longitudinal direction L parallel to the coupling side 316 and a coupling slot cross-section 330 perpendicular to the longitudinal direction L (see Fig. 17). Both longitudinal directions L are parallel to each other. The coupling slot cross-section 330 diverges from the coupling side 316. In this embodiment, the coupling slot cross-section 330 has the shape of a half dovetail.

[0078] In this embodiment, the stiffener 320 is a plate-shaped stiffener made of plywood. It includes a plate-shaped body 332 with two flat sides 334 (second side not visible in these figures), an edge 338, and two coupling elements 340 extending from the edge 338 of the body 332. Each coupling element 340 includes a coupling element cross-section 342. The coupling element crosssection 342 corresponds to the coupling element cross-section 330 (see Fig. 17) and, in this embodiment, has the shape of a dovetail.

[0079] Each insertion opening 326 is open towards the coupling side 316 such that the coupling member 340 is insertable into the insertion opening 326 in a direction P perpendicular to the coupling side 316. The coupling slot 324 extends in an insertion direction I, which makes an angle, in this embodiment a perpendicular angle, with respect to the longitudinal direction L. At one end of the insertion opening 326, it is in through connection with the coupling slot 324 such that the coupling element 340 is slidable in the longitudinal direction L from the insertion opening 326 into the coupling slot 324, to connect by means of a form fit between the coupling element 340 and the coupling slot 324 the structural member 312 and the stiffener 320.

[0080] In this embodiment, the insertion opening 326 has two parts, where one side of the second part of the insertion opening makes an angle of more than 0° and less than 45° with respect to the insertion direction I. As a result, the coupling element 340 in the second part of the insertion opening 326 is twisted springily with respect to the plate-shaped body 332.

[0081] In this embodiment, the blocking opening 328 is arranged to receive the blocking element 322 sliding in a direction S parallel to the coupling side 316 and parallel to the longitudinal direction L.

[0082] Figure 17 shows a cutaway of a longitudinal section through the system 310 at the location of the blocking opening 328 and blocking element 322 and one of the coupling elements 340 and associated coupling slot 324. The blocking opening 328 includes a blocking opening cross-section 350 that diverges from the coupling side 316 away and has a dovetail shape in this embodiment. The blocking element 322 of this embodiment has a dovetail shape and a blocking element cross- sectional area 354 corresponding to the blocking opening cross-section 350 for forming a formlocked connection between the blocking opening 328 and the blocking element 322. The dovetail shape of the blocking element 322 and the blocking opening 328 contributes to the connection between the stiffener 320 and the structural member 312.

[0083] The blocking element 322 of this embodiment is torsionally spring-loaded connected to the coupling elements 340, the spring-loaded connection being formed by two portions of the plate- shaped body 332 of the stiffener 320 on either side of the blocking element 322. The blocking element 322 is held in the blocking opening 328 under spring force by the spring action of the plateshaped body 332.

[0084] The blocking opening entry slot 329 extends in the longitudinal direction L and is arranged to receive the blocking element 322 in a direction P perpendicular to the coupling side 316 and to guide the blocking element slidably in the direction I to the blocking opening 328. The blocking opening entry slot 329 is in through connection with the blocking opening 328 such that the blocking element 322 is slideable in the sliding direction S from the blocking opening entry slot 329 into the blocking opening 328, thereby blocking a slideability of the coupling elements 340 against the longitudinal direction L. As a result, the coupling elements 340 cannot slide back into the respective insertion opening 326 and the structural member 312 and the plate-shaped stiffener 320 are permanently or semi-permanently connected to each other.

[0085] In this embodiment, coupling elements 340 and blocking element 322 are designed in a mutually similar manner. Similarly, coupling slots 324 and the corresponding insertion openings 326 are similarly shaped as the blocking opening 328 and the blocking opening entry slot 329. Thus, one of the coupling elements 340 may also be referred to as blocking element 322 and vice versa. The blocking element 322 fully performs its blocking action only in the presence of at least one coupling element 340, as the blocking element 322 can otherwise be moved into and out of the blocking opening 328 without a torsion action, but by a simple rotation of the entire stiffener 320.

[0086] In use, the coupling element 340 of the plate-shaped stiffener 320 of this embodiment is pushed into the insertion opening 326 in direction P. With the same movement, the blocking element 322 is pushed in the direction P into the blocking opening entry slot 329. This brings the edge 338 against the coupling side 316. Next, the plate-shaped stiffener 320 is pushed in the direction I, causing the coupling elements 340 to slide through the coupling slot 324 and the blocking element to simultaneously slide through the blocking opening entry slot 329. As the insertion opening 326 and the blocking opening entry slot 329 make an angle of more than 0° and less than 45° on one side with respect to the direction I, the coupling elements 340 and the blocking element 322 rotate under torsional force until they are in front of the coupling slot 324 and blocking opening 328, respectively. Here, the coupling elements 340 move in the direction L, while the blocking element 322 moves in the parallel direction S, with the coupling elements 340 and blocking elements 322 springing back to an orientation in the same plane as the plate-shaped body 332. This prevents the coupling elements 340 from sliding back into the respective insertion openings 326. Thanks to the dovetailed cross-sections 330 and 342 of the coupling elements 340 and the coupling slot 324, a form-fitting connection is created between the plywood panel 323 and the plywood sheet-shaped stiffener 320. The blocking element 322 similarly contributes to the connection between the plywood panel 333 and the plywood sheet-shaped stiffener 320.

[0087] Figure 18 shows the resulting architectural structure 360, constructed in this way from the system 310.

[0088] A fifth embodiment is shown in Figures 19-24. The system 410 includes a structural member 412 having a rear face 414 and a coupling face 416 located opposite the rear face, a stiffener 420, and two blocking elements 422 for locking a connection between the stiffener 420 and the structural member 412. The stiffener 420 is connectable to the structural member 412 to increase a bending stiffness of the structural member 412. The structural member 412 of this embodiment is a structural plywood panel 423 suitable and intended for a structural construction.

[0089] The coupling side 416 of this embodiment is provided with two coupling slots 424, each having an insertion opening 426 in open communication with the corresponding coupling slot 424. The insertion opening 426 includes a blocking opening 428 at a distal end of the insertion opening 426. Each coupling slot 424 has a longitudinal direction L parallel to the coupling side 416 and a coupling slot cross section 430 perpendicular to the longitudinal direction L (see Fig. 23). Both longitudinal directions L are parallel to each other. The coupling slot cross-section 430 diverges from the coupling side 416. In this embodiment, the coupling slot cross-section 430 has the shape of a dovetail.

[0090] In this embodiment, the stiffener 420 is a plate-shaped stiffener made of plywood. It comprises a plate-shaped body 432 with two flat sides 434, 436, an edge 438, and two coupling elements 440 extending from the edge 438 of the body 432. Each coupling element 440 includes a coupling element cross section 442. The coupling element cross-section 442 corresponds to the coupling element cross-section 430 and is also dovetailed in this embodiment.

[0091] The insertion opening 426 is open towards the coupling side 416 at the blocking opening 428 such that the coupling element 440 is insertable into the insertion opening 426 in a direction P perpendicular to the coupling side 416. The coupling slot 424 is in through connection with the insertion opening 426 such that the coupling element 440 is slidable in the longitudinal direction L from the insertion opening 426 into the coupling slot 424 to connect the structural member 412 and the stiffener 420 by means of a form fit between the coupling element 440 and the coupling slot 424.

[0092] The blocking element 422 is insertable in a proximal part of the insertion opening 426 in the direction P perpendicular to the coupling side 416 and is slidable from there in a sliding direction S to the blocking opening 428 at the distal end of the insertion opening 426. The blocking opening 428 is arranged to receive the blocking element 422 slidingly in the sliding direction S. The sliding direction S is perpendicular to the longitudinal direction L and parallel to the coupling side 416. In this embodiment, the blocking element 422 is an elongated block of wood with a trapezoidal cross section 423.

[0093] The blocking opening 428 has a transverse section 450 diverging from the coupling side 416. The shape of the cross-section 450 corresponds to the trapezoidal cross-section 423 of the blocking element to restrict a movement opposite to direction P by means of a form fit.

[0094] After insertion of the blocking element 422, a sliding of the coupling element 440 against the longitudinal direction L is blocked. As a result, the coupling element 440 cannot slide back into the insertion opening 426 and the structural member 412 and the plate-shaped stiffener 420 are permanently or semi-permanently connected to each other. The blocking element 422 itself is permanently incorporated into the insertion opening 426 by form fit, so no further fasteners such as glue or screws are required.

[0095] In use, the coupling element 440 of the plate-shaped stiffener 420 of this embodiment is slid in the direction P into the blocking opening 428, which in this embodiment coincides with the distal end of the insertion opening 426. Thereby, the edge 438 comes to lie against the coupling side 416. Next, the plate-shaped stiffener 420 is pushed in the direction L, causing the coupling elements 440 to slide into the coupling slot 424. Thanks to the dovetailed cross-sections 430 and 442 of the coupling slot 424 and the coupling elements 440 respectively, a form-fitting connection is created between the plywood panel 423 and the plywood sheet-shaped stiffener 420. Next, the blocking elements 422 are inserted perpendicularly P into the proximal part of the insertion opening 426 and then inserted in the direction S into the blocking openings 428, preventing the respective coupling element 442 from sliding back into the insertion opening 426.

[0096] Figure 24 shows a resulting architectural structure 460, constructed in this way from the system 410.

[0097] A sixth embodiment is shown in Figures 25-26. The system 510 includes a structural member 512 with a coupling side 516, a stiffener 520, and one blocking element 522 for locking a connection between the stiffener 520 and the structural member 512. The stiffener 520 is connectable to the structural member 512 to increase a bending stiffness of the structural member 512. The structural member 512 of this embodiment is a structural plywood panel 523 suitable and intended for a structural construction.

[0098] The coupling side 516 of this embodiment example is provided with two coupling slots 524, each having an insertion opening 526 in open communication with the corresponding coupling slot 524. One of the insertion openings 526 includes a blocking opening 528 at a proximal end of the insertion opening 526.

[0099] In this embodiment, the stiffener 520 is a plate-shaped stiffener made of plywood. It comprises a plate-shaped body 532 with two flat sides, an edge 538, and two coupling elements 540 extending from the edge 538 of the body 532.

[0100] The coupling slots 524 and coupling elements 540 have cross-sections similar to those of the third embodiment, and for their functioning reference is made to the respective description. The same applies to the insertion opening 526.

[0101] The blocking element 522 is insertable into a first, proximal end of the blocking opening 528 in a direction perpendicular to the coupling side 516 and from there is sliding in a longitudinal, or sliding direction to a second, distal end of the blocking opening 528. The blocking opening 528 is arranged to receive the blocking element 522 slidingly. In this embodiment, the blocking element 522 is an elongated block of wood with a trapezoidal cross-section. The blocking opening 528, the blocking element 522, the respective cross-sections and the resulting form-fit are similar to those of the fifth embodiment. Reference is made to that embodiment for a detailed description.

[0102] The blocking element 522 is inserted into the blocking opening 528 in a direction perpendicular to the direction of the coupling slot 524. After insertion of the blocking element 522, a sliding of the coupling element 540 against the longitudinal direction L is blocked. As a result, the coupling element 540 cannot slide back into the insertion opening 526 and the structural member 512 and the plate-shaped stiffener 520 are permanently or semi-permanently connected to each other. The blocking element 522 itself is permanently incorporated into the blocking opening 528 by form-fit, so no further fasteners such as glue or screws are required.

[0103] Figure 26 shows a resulting structural structure 560, which is constructed from the system 510.

[0104] A seventh embodiment is shown in Figure 27. The system 610 includes a structural member 612 having a coupling side 616, a stiffener 620, and one blocking element 622 for locking a connection between the stiffener 620 and the structural member 612. The stiffener 620 is connectable to the structural member 612 to increase a bending stiffness of the structural member 612. The structural member 612 of this embodiment is a structural plywood panel 623 suitable and intended for a structural construction.

[0105] The coupling side 616 of this embodiment includes two coupling slots 624, each having an insertion opening 626 in open communication with the corresponding coupling slot 624. This embodiment includes a separate blocking opening 628 in the coupling side 616. In this embodiment, the stiffener 620 is a plate-shaped stiffener made of plywood. It includes a plate-shaped body 632 with two flat sides, an edge 638, and two coupling elements 640 extending from the edge 638 of the body 632.

[0106] The coupling slots 624 and coupling elements 640 have the cross-sections similar to those of the third embodiment, and for their operation, reference is made to the respective description. The same applies to the insertion opening 626.

[0107] The blocking element 622 of this embodiment is spring-loaded by a part of the plate-shaped body 632 to the coupling elements 640. The blocking element 622 is receivable in the correspondingly formed blocking opening 628.

[0108] In use, the coupling element 640 of the plate-shaped stiffener 620 of this embodiment is pushed into the insertion opening 626 in a direction perpendicular to the coupling side 616 against the spring force of the blocking element, until the edge 638 comes to rest against the coupling side 616. Next, the plate-shaped stiffener 620 is pushed in a longitudinal direction of the coupling slot 624, causing the coupling elements 640 to slide into the coupling slot 624. Thanks to the halfdovetail cross-sections of the coupling slot 624 and the coupling elements 640, a form-fitting connection is created between the plywood panel 623 and the plywood sheet-shaped stiffener 620. At the moment the coupling elements 640 reach their end point in the respective coupling slots 624, the blocking element 622 slides to above the blocking opening 628 and, due to the spring force, engages the blocking openings 628 perpendicularly to the coupling side 616 and to the direction of the coupling slot 624.

[0109] After insertion of the blocking element 622 into the blocking opening 628, a sliding of the coupling element 640 against the longitudinal direction of the coupling slots 624 is blocked. As a result, the coupling element 640 cannot slide back into the insertion opening 626 and the structural member 612 and the plate-shaped stiffener 620 are permanently or semi-permanently connected to each other. The blocking element 622 itself is held under spring force in the blocking opening 628, so no further fasteners such as glue or screws are required.

[0110] Figure 28 shows a resulting architectural structure 660, which is constructed from the system 610.

[0111] An eighth embodiment is shown in Figure 29. The system 710 includes a first structural member 712 having a coupling side 716, a second structural member 717 having a thickness T and a second coupling side 719, a stiffener 720, and two blocking elements 722, 723 for locking a connection between the stiffener 720 and the structural members 712, 717. The stiffener 720 is connectable to the first structural member 712 and to the second structural member 717 to increase a bending stiffness of the second structural member 712. The structural members 712 and construction. The first structural member of this embodiment is a rafter for mounting external wall cladding (not shown)

[0112] The coupling sides 716, 719 of this embodiment example are provided with two plus two coupling slots 724, 725 each having an insertion opening 726, 1 in open communication with the corresponding coupling slot 724, 725. One of the insertion openings 726, 1 on each structural member 712, 717 includes a blocking opening 728, 729 at a proximal end of the insertion opening 726, 727. The coupling slots of the second structural member 717 are through coupling slots 719.

[0113] In this embodiment, the stiffener 720 is a plate-shaped stiffener made of plywood. It comprises a plate-shaped body 732 having two flat sides, an edge 738, and two coupling elements 740 extending from the edge 738 of the body 732. The stiffener of this embodiment includes two intermediate members 741 each of which connects it a coupling element 740 to the body 732. A dimension of the intermediate member 741 in a direction from the body to the coupling element

[0114] 740 is substantially equal to the thickness T, such that the second structural member 717 is recordable between the first structural member and the stiffener.

[0115] The coupling slots 724, 725 and coupling elements 740 have cross-sections similar to those of the third embodiment, and for their functioning, reference is made to the respective description. The same applies to the insertion openings 726. In this embodiment, the intermediate elements

[0116] 741 also have divergent cross-sections.

[0117] For the functioning of this example, reference is made to the third and sixth embodiments, where in this eighth embodiment two structural members 712, 717 are jointly connected to one stiffener 720.

[0118] Figure 30 shows an exploded view of a double-walled structure 808 according to the invention. The double-walled structure 808 is constructed using a system 810, of which three parts are shown schematically. It will be clear that in reality, a double-walled structure will have different proportions and more components than shown. The system 810 includes a first structural member 812, a second structural member 817, a stiffener 820, two blocking elements 822 for locking a connection between the stiffener 820 and the first structural member 812, and a blocking element 823 for locking a connection between the stiffener 820 and the second structural member 817.

[0119] The method of connecting and blocking the first structural member 812 with the stiffener 820 is similar to that of the fifth embodiment, as shown in Figures 19-24 and described in detail above, referred to herein. The method of connecting and blocking the second structural member 817 with the stiffener 820 is similar to that of the seventh embodiment, as shown in Figures 27 and 28 and described in detail above, also referred to herein. The first structural member 812 and the stiffener 820 of this embodiment are made of structural plywood panels, in particular plywood with a WBP (Water Boiled Proof) bonding that is also known as 3S boards, and the second structural member 817 is made of vapour permeable MDF. The system 810 is suitable and intended for the construction of a double-walled structural member 808, such as a wall or roof of a building. In this embodiment, the stiffener 822 serves not only to increase the bending stiffness of the structural members 812, 817, but also to position these structural members at a predetermined distance between them. In particular, the respective spacing is intended to provide sufficient insulation material between the structural members for insulating the structure against heat loss in the case of an exterior wall, floor, or roof structure and / or against noise in the case of an exterior or interior wall, ceiling, floor, or roof structure.

[0120] All systems described above and shown in the figures are suitable and intended to form a architectural construction, such as a single- or double-walled wall, roof, ceiling, or floor. In the case of a double-walled structure, a third structural member is conventionally connected to a second edge of the stiffener, or according to one of the above embodiments of the invention.

[0121] Different variants are possible within the scope of the attached claims. The elements of the embodiments described above can be replaced by any other element within the scope of the claims, such as elements described in relation to other embodiments and in the sections below.

[0122] A stiffener has one or more coupling elements, which are intended for one or more structural members.

[0123] Each structural member has one or more coupling slots, intended for the coupling elements of one or more stiffeners.

[0124] In alternative embodiments, there are multiple stiffeners per structural member, or a stiffener extending over multiple structural members. In such embodiments, the number of coupling elements to one stiffener is not equal to the number of coupling slots of one structural member.

[0125] In an embodiment, the structural member and / or stiffener are shaped differently than plate-shaped, such as a beam form. A beam generally has four longitudinal sides and two end ends. One of the longitudinal sides acts as a coupling side within the invention.

[0126] In one embodiment, the plate-shaped structural members, such as panels, and / or the plateshaped stiffeners are polygonal, such as triangular, rectangular (including square), or pentagonal or more than pentagonal.

[0127] In one embodiment, the structural members and / or stiffeners are made of fibreboards, such as MDF, in particular vapour-permeable MDP (known by its brand name Agepan), OSB (Oriented Strand Board), HPL (High Pressure Laminate, known by its brand name Trespa), or cementitious boards, such as fibre cement boards.

[0128] In one embodiment, a blocking element is a loose element which is connected to the stiffener in use.

[0129] In a variant of the invention, the structural member and the stiffener are both plate-shaped, the plate-shaped structural member is provided with multiple coupling slots with corresponding insertion openings and the plate-shaped stiffener is provided with multiple coupling elements, having a shape as described above in a general sense, and in relation to the embodiments. Such a variant is already advantageous with respect to the prior art without the application of a blocking opening and blocking element in that it establishes a connection between the plate-shaped structural member and the plate-shaped stiffener in a simple and fast manner without the need for adhesive or other joining means.

[0130] The function of the coupling slot and coupling element in all shown and not shown versions within the claims is to connect the structural member and the stiffener. The shape of the respective cross-sections is such that at least a movement of the stiffener in a direction perpendicular to the coupling side, away from the coupling side, is prevented.

[0131] In one embodiment, a coupling slot is open not only to the coupling side, but also to the rear. A coupling slot that is through-and-through not only offers the advantage that a coupling element can be inserted through it, for further coupling of a subsequent structural member at the rear of the structural member, as described above in relation to the eighth form of implementation, but is also advantageous in an architectural construction where without a subsequent structural member at the rear. In that case, the open slot at the rear is practical to insert tools into the slot from the rear to force the coupling element into the coupling slot and / or to apply a blocking element. This will occur particularly in double-walled structures, where the coupling side of the second structural member is not easily accessible because the first structural member is already attached to the stiffener

[0132] In the embodiments shown, the cross-sections of the coupling element and coupling slot are fully or half dovetailed. More generally, these cross-sections are trapezoidal, where the sloping sides of the trapezoidal shape need not have the same orientation and dimensions among themselves.

[0133] In the embodiments shown, the coupling element cross-section corresponds to the coupling slot cross-section. In general, the coupling slot cross-section comprises the shape of the coupling element cross-section and the coupling slot cross-section may have locally larger dimensions than the coupling element on site in the coupled state, or a different shape, provided that the shape of the coupling element fits within it and a form-fit is achieved. In a variant where a coupling slot is open to the rear, the coupling slot is deeper than the corresponding dimension of the coupling element.

[0134] In one embodiment, the edge of the plate-shaped stiffener is spaced away from the coupling side for reducing a thermal bridge. This can be done by making the depth of the coupling slot less than the relevant dimension of the coupling element, by allowing the edge of the plateshaped stiffener to indent between two coupling elements or by attaching the coupling element to the body with an intermediate part.

[0135] In an embodiment, the coupling element is limited by a short element plane, a long element plane located opposite the short element plane, two opposite element end planes and two opposite element side planes. A cross-section of the coupling slot is limited by a short slot plane, a long slot plane located opposite the short slot plane, two opposite slot end planes and two opposite slot side planes. The coupling slot is open to the coupling side through the short slot plane. The dimensions of the short element plane, the long element plane, the two element end planes and the two element side planes correspond to the dimensions of the short slot plane, the long slot plane, the slot end planes and the slot side planes, respectively. The short element plane faces towards the edge of the stiffener and the long element plane faces away from the edge of the stiffener.

[0136] In one embodiment, the coupling element has a curved element plane. In particular, the coupling element has a fully curved coupling element cross-section, such as an elliptical or a circular cross-section.

Claims

CLAIMS1. System (10) for constructing an architectural structure, comprising a structural member (12) having a rear side (14) and a coupling side opposite the rear side (16), a stiffener (20), connectable to the structural member (12) to increase a bending stiffness of the structural member (12), and a blocking element (22) for locking a connection between the stiffener (20) and the structural member (12), wherein the coupling side (16) is provided with a coupling slot (24), an insertion opening (26) in open connection with the coupling slot (24), and a blocking opening (28), the coupling slot (24) has a longitudinal direction (L) parallel to the coupling side (16) and a coupling slot cross-section (30) perpendicular to the longitudinal direction, the coupling slot cross-section (30) diverges from the coupling side (16), the stiffener (20) comprises a body (32) and at least a first coupling element (40) extending from the body and comprising a coupling element cross-section (42), the coupling slot cross-section (30) comprises the shape of the coupling element crosssection (42), the insertion opening (26) is open towards the coupling side (16) such that the first coupling element (40) is insertable into the insertion opening (26) in a direction perpendicular to the coupling side (16), the coupling slot (24) is in through connection with the insertion opening (26) in such a way that the first coupling element (40) is movable in the longitudinal direction from the insertion opening (26) into the coupling slot (24) in order to connect the structural member (12) and the stiffener (20) by means of a form-fit between the coupling element and the coupling slot (24) , and wherein the blocking element (22) is insertable into the blocking opening (28) for blocking a sliding of the first coupling element (40) against the longitudinal direction.

2. System according to claim 1, wherein the insertion opening (26) comprises the blocking opening (28).

3. System according to claim 1, wherein the blocking opening (128) is provided separately from the insertion opening (126).

4. System according to any or all of the preceding claims, wherein the blocking opening (28) is arranged to receive the blocking element (22) sliding in a sliding direction perpendicular to the longitudinal direction.

5. System according to claim 4 , wherein the sliding direction is also parallel to the coupling side (216).

6. System according to any one or more of the preceding claims, wherein the blocking opening (228) is provided with a ledge (252) cooperating with the blocking element (222) for stopping the blocking element (222) in a direction perpendicular to the coupling side (216).

7. System according to any or all of the preceding claims, wherein the blocking opening (228) comprises a blocking opening cross section (250) that diverges from the coupling side (216) away and the blocking element (222) comprises a cross section corresponding to the blocking opening cross section (250) for forming a form-fitting connection between the blocking opening (228) and the blocking element (222).

8. System according to any or all of the preceding claims, wherein the blocking element (222) is connected spring-loaded to the first coupling element (240).

9. System according to claim 8 , wherein the spring-loaded connection is formed by a plate-shaped part of the stiffener (220).

10. System according to any or all of the preceding claims, wherein the structural member (12) comprises a panel (23).

11. System according to any or all of the preceding claims, wherein the body of the stiffener (20) is plate-shaped.

12. System according to claim 11 , wherein the first coupling element (40) extends from an edge(38) of, and in a same plane as, the body (32) of the plate-shaped stiffener (20).

13. System according to any or all of the preceding claims, wherein the stiffener (20) is provided with multiple coupling elements (40).

14. System according to any or all of the preceding claims, wherein the structural member (12) comprises multiple coupling slots (24).

15. System according to any or all of the preceding claims, further comprising a second structural member (717) having a thickness and a through second coupling slot (725), wherein the stiffener (720) comprises an intermediate member (741) connecting the coupling element (740) to the body (732) wherein a dimension of the intermediate member (741) in a direction from the body (732) to the coupling element (740) is at least equal to the thickness, such that the second structural member (717) is receivable between the first structural member (712) and the stiffener (720), and the first structural member (712) and the second structural member (717) are jointly connectable to the stiffener (720).

16. System according to any or all of the preceding claims, wherein at least one of the structural member (12) and the stiffener (20) is made of one of the list comprising MDF and plywood.

17. Architectural structure (360, 808) made of at least one structural member (312, 812), a stiffener (320, 820), and a blocking element (322, 822) of the system (310, 810) according to any one or all of the preceding claims.

18. Architectural structure according to claim 17, further comprising a third structural member (817) connectable to the stiffener (820) on a side of the body of the stiffener (820) opposite the first connecting member for forming a double-sided structure (808) such as a hollow wall, floor, or ceiling.

19. Architectural structure according to claim 18 , wherein the third structural member comprises a rear side and a coupling side opposite the rear side, which coupling side is provided with a coupling slot and an insertion opening in open connection with the coupling slot, the coupling slot has a longitudinal direction parallel to the coupling side and a coupling slot cross-section perpendicular to the longitudinal direction, the coupling slot cross-section diverges from the coupling side,the stiffener includes at least a second coupling element, provided at the body opposite the first coupling element, with a coupling element cross-section, the coupling element cross-section corresponds to the coupling slot cross-section, the insertion opening is open towards the coupling side such that the second coupling element can be inserted into the insertion opening in a direction perpendicular to the coupling side, the coupling slot is in through connection with the insertion opening in such a way that the second coupling element is slidable in the longitudinal direction from the insertion opening into the coupling slot to connect the third structural member and the stiffener by means of a form fit between the coupling element and the coupling slot.

20. Method for constructing an architectural structure, comprising the following steps: providing a system (10) for constructing an architectural structure according to any on or more of claims 1-16, moving the stiffener (20) relative to the structural member (12) such that the coupling element is inserted into the insertion opening (26) in the direction perpendicular to the coupling side (16), sliding the stiffener (20) relative to the structural member (12) in the longitudinal direction of the coupling slot (24), and inserting the blocking element (22) into the blocking opening (28) for blocking a slidability of the coupling element against the longitudinal direction.