Building envelope, especially building facade or building roof, with multiple surface elements

Description

TECHNICAL AREA

[0001] The invention relates to a building envelope, in particular a building facade or building roof, with several surface elements, in particular glass surfaces, which are supported by profile elements of the building envelope which are connected to each other via one or more connecting nodes, a material set comprising a connecting node with an associated sealing node element for such a building facade and a method for producing the material set according to the preambles of the independent claims. STATE OF THE ART

[0002] For building envelopes with multiple surface elements supported by profile elements connected via one or more joints, ensuring a reliable seal between the surface elements and the supporting structure at the joints, and safely draining rainwater from these areas, presents significant building physics challenges. According to current best practices, the profile seals running along the profile elements are joined at the respective joints using complex miter cuts and sealed watertight. This process is complex and carries a considerable risk of defects, not to mention the potential for leaks at the joints over time.Another problem of the prior art, which occurs particularly in free-form glass roofs with convex and concave pane configurations, is that steps are created between the sealing planes of the profile elements converging at a connection node. These steps can lead to very different distances between the glass surface to be sealed and the top of the node in the area of ​​the connection node, with corresponding problems for sealing in this area. DE 10 2004 025957 A1 discloses the features of the preamble of claim 1. PRESENTATION OF THE INVENTION

[0003] The task therefore arises to provide technical solutions that do not exhibit the aforementioned disadvantages of the state of the art or at least partially avoid them.

[0004] This problem is solved by the subject matter of the independent patent claims.

[0005] According to these, a first aspect of the invention relates to a building envelope, such as a building facade or a building roof, with several surface elements, in particular flat glass surfaces, which are supported by profile elements of the building envelope that are connected to each other via one or more connecting nodes.

[0006] According to the invention, at least one of the connecting nodes of the building envelope provides a sealing node element, preferably formed in one piece, for sealing between the connecting node and surface elements which are supported by the profile elements connected to each other with this connecting node, and which forms a trough-like sealing body.

[0007] The trough-shaped sealing body of the sealing node element has a flat sealing base with which it rests on the connecting node. At the periphery of the sealing base, raised edge areas protrude, each comprising a rim base and a sealing contour supported thereby, the sealing contour abutting one of the flat elements in a sealing manner.

[0008] The raised edge areas extend within a portion of the sealing base's perimeter boundaries, specifically between the connections of two directly adjacent profile elements at the joint nodes. In those areas of the sealing node element located at the connection points of the profile elements, no raised edge areas with sealing contours are present.

[0009] According to the invention, the sealing contours of the raised edge areas each have a substantially identical cross-section along their longitudinal extent, while the edge bases supporting the respective sealing contour have a varying cross-section along their longitudinal extent, preferably such that the respective edge base runs at a distance substantially parallel to the surface of the surface element to which the sealing contour it supports abuts in a sealing manner. Any steps between the sealing planes of the profile elements converging at a connection node, as well as shapes of the connection node that lead to different distances between the respective glass surface to be sealed and the top of the connection node, are compensated for by the edge bases.

[0010] With the solution according to the invention, a reliable seal in the area of ​​the connection nodes can be ensured in a simple and reliable manner for building envelopes with surface elements which are supported by profile elements which are connected to each other via one or more connection nodes.

[0011] The sealing contours are advantageously designed as a sealing lip, preferably facing inwards towards the interior of the sealing node element. Such sealing contours have proven effective in building envelope applications.

[0012] In a preferred embodiment of the building envelope according to the invention, the respective sealing node element is watertight in the areas where the profile elements connect to the respective connection nodes with channel-like profile seals, preferably by welding or bonding. These seals have a flat sealing base with which they rest on the respective connected profile element. Edge regions project from the profile element at its longitudinal boundaries, each comprising an edge base and a sealing contour, in particular a sealing lip, supported thereby, which abuts one of the surface elements supported by the profile element in a sealing manner. In this way, the sealing node elements of the connection nodes and the profile seals of the profile elements form a continuous sealing system.

[0013] It is preferred that the raised edge regions of the sealing node element(s) in the areas bordering the channel-like profile seals have a substantially identical cross-section to the raised edge regions of the channel-like profile seals. This offers the advantage of enabling a virtually stepless transition from the sealing node elements of the connecting nodes to the profile seals of the profile elements.

[0014] Advantageously, the sealing surfaces of the channel-like profile seals and the respective sealing node element overlap in the area of ​​the connections of the channel-like profile elements to the connecting nodes, preferably in such a way that the sealing surface of the respective sealing node element rests on the sealing surfaces of the adjoining channel-like profile seals. This ensures a reliable seal between the sealing node elements and the profile seals.

[0015] A second aspect of the invention relates to a material set comprising a connecting node with an associated sealing node element for a building facade according to the first aspect of the invention.

[0016] The connecting node has connection areas for several surface-bearing profile elements to be connected to it.

[0017] The sealing node element, which is advantageously made in one piece, forms a trough-like sealing body with a flat sealing base for support on the connecting node, which has raised edge areas at its circumferential boundaries, each comprising an edge base and a sealing contour supported thereby, in particular in the form of a sealing lip, for sealing against one of the surface elements of the building facade to be formed with the material set.

[0018] The sealing node element is designed in such a way and can be arranged with its sealing base on the connection node in such a way that the raised edge areas extend into partial areas of the circumferential boundaries of the sealing base, which extend between two directly adjacent connection areas of the connection node for the profile elements to be connected to the connection node, and that in each of the connection areas for the profile elements there are no raised edge areas with sealing contour of the sealing node element.

[0019] In preferred embodiments, the sealing contours of the raised edge regions of the sealing node element each have a substantially identical cross-section over their longitudinal extent, while the edge bases supporting the respective sealing contour have a varying cross-section over their longitudinal extent, preferably such that, in the case of the respective sealing node element arranged as intended on the connecting node, they run at a distance substantially parallel to a plane in which, when the connecting node is used as intended, the surface element extends which is supported by those profile elements between whose connection regions the respective raised edge region extends.

[0020] With such material sets, building envelopes according to the invention can be realized with the aforementioned advantages.

[0021] The connecting node and / or the sealing node element are preferably manufactured using an additive manufacturing process, e.g., by 3D printing.

[0022] A third aspect of the invention relates to a method for producing the material set according to the second aspect of the invention, wherein the connecting node and the associated sealing node element are modeled from a common data set and subsequently manufactured by additive manufacturing processes. In this way, these components can be easily and individually provided in a coordinated manner for specific node situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Further embodiments, advantages, and applications of the invention will become apparent from the dependent claims and from the following description with reference to the figures. These figures show: Fig. 1a perspective top view of a part of a building glass roof according to the invention; the Figures 2 to 5 Perspective top views of the part of the building's glass roof made of Fig. 1 in various stages of assembly; Fig. 6 a perspective top view of one of the connection nodes 4 together with one end of one of the profile elements 3; Fig. 7 a perspective top view of the sealing node element 5 from Fig. 1 ; Fig. 8 a vertical section along line AA in Fig. 1 ; Fig. 9 a vertical section along line BB in Fig. 1 ; and Fig. 10 a vertical section through one of the profile elements 3 with the profile seal 10 arranged on it in the assembled state of the glass roof 1 according to Fig. 1 . WAYS TO IMPLEMENT THE INVENTION

[0024] Fig. 1Figure 1 shows a perspective top view of part of a free-form dome of a building glass roof according to the invention. The gaps between the glass panes 2 can be closed by means of trim strips or silicone joints.

[0025] As can be seen from a combination of the Figures 2 to 5 It is recognizable which perspective top views of part of the building's glass roof 1 are taken from Fig. 1 The supporting structure of the building roof 1, which is shown in different stages of assembly, consists of profile elements 3 which are connected to each other via connecting nodes 4 (see Fig. 2 ).

[0026] As seen in a combination of Fig. 2 with Fig. 6As can be seen in the perspective top view of one of the connection nodes 4 together with an end of one of the profile elements 3 when joined, the profile elements 3 have shaped pieces 16 with undercut recesses 17 on their end faces, with which they are each moved from below in the illustrated insertion direction Z over fastening projections 18 provided by the connection node 4 on the respective connection side (for the sake of clarity not all of them are labelled with reference numbers), which engage behind the undercuts of the recesses 17 and thereby create a positive fit between the connection node 4 and the respective profile element 3 in both longitudinal directions of the profile element 3 and in both directions transverse to the insertion direction Z.The connection thus created between the connecting node 4 and the respective profile element 3 is then secured against separation by inserting a longitudinally displaceable locking element 15 in the profile element 3 into a corresponding locking recess 19 in the connecting node 4 and securing it against being pulled out of it with a locking screw 20 (see . Fig. 2 The locking element 15 also transfers the vertical loads from the profile element 3 to the connection node 4. The fastening projections 18 each consist of a sleeve with a flanged end through which a load-bearing bolt is inserted.

[0027] For sealing between the connecting node 4 and the surface elements 2, which are supported by the profile elements 3 connected to each other with the connecting node 4, a one-piece sealing node element 5 made of an elastomer is arranged on the connecting node 3, which forms a trough-like sealing body.

[0028] Fig. 3 shows a perspective top view of the supporting structure according to Fig. 2 after the sealing node element 5 has been placed on the connecting node 4 as intended.

[0029] As seen in a combination of Fig. 3 with Fig. 7 As can be seen in the perspective view of the sealing node element 5, the trough-shaped sealing body of the sealing node element 5 has a flat sealing base 6, with which it rests on the connecting node 4 and from which edge areas 7 protrude from the sealing base 6 at its circumferential boundaries, each of which comprises an edge base 8 and a sealing lip 9 supported thereby, which, when the building roof is fully assembled, adjoins one of the surface elements 2 in a sealing manner.

[0030] As can be seen, the raised edge areas 7 each extend in a region that lies between the connections of two directly adjacent profile elements 3 at the connection nodes 4. In the areas of the sealing node element 5, which are located in the region of the connections of the profile elements 3 to the connection nodes 4, there are no raised edge areas with sealing contours.

[0031] How to proceed in conjunction with the Figure 8 and 9 It can be seen which vertical sections along lines AA and BB in Fig. 1 As shown, the sealing lips 9 of the raised edge areas 7 each have an essentially identical cross-section over their longitudinal extent (due to different bearing situations in Fig. 8 and Fig. 9(these are deformed differently by the overlying glass panes 2), while the edge base 8 supporting the respective sealing lip 9 has a varying cross-section over its longitudinal extent, such that it runs at a distance a essentially parallel to the surface of the glass pane 2 to which the sealing lip 9 it supports a sealing abuts.

[0032] Fig. 4 shows a perspective top view of the supporting structure as Fig. 3 , however, in a more advanced assembly state, after channel-like profile seals 10 were placed on the profile elements 3 and the sealing node element 5 was bonded watertight to these profile seals 10 in the areas of the connections of the profile elements 3 to the connection nodes 4.

[0033] As seen in a combination of Fig. 4 with Fig. 10It can be seen that a vertical section through one of the profile elements 3 with the profile seal 10 arranged on it is visible in the assembly state of the glass roof 1 according to Fig. 1 As shown, the profile seals 10 have a flat sealing base 11 with which they rest on the respective profile element 3 and from which edge areas 12 protrude at its longitudinal boundaries, each comprising an edge base 13 and a sealing lip 14 supported thereby, which seals against one of the glass panes 2 supported by the profile element 3.

[0034] As can be seen from a synthesis of the Figure 9 and 10As can be seen, the raised edge regions 7 of the sealing node element 5 in the areas of the adjoining the channel-like profile seals 10 have an essentially identical cross-section to the raised edge regions 12 of the channel-like profile seals 10. The sealing bases 6 and 11 of the channel-like profile seals 10 and of the sealing node element 5 overlap in the area of ​​the connections of the channel-like profile seals 10 to the sealing node element 5 such that the sealing base 6 of the sealing node element 5 rests on the sealing bases 11 of the channel-like profile seals 10.

[0035] The in Fig. 6 The connection node 4 shown, together with the one in Fig. 7 The sealing node element 5 shown comprises a material set according to the invention.

[0036] The connecting node 4 and the associated sealing node element 5 were modulated from a common data set and subsequently manufactured using additive manufacturing processes (3D printing).

[0037] While preferred embodiments of the invention are described in the present application, it should be clearly pointed out that the invention is not limited to these and can also be carried out in other ways within the scope of the following claims.

Claims

1. Building envelope (1), in particular building facade or building roof (1), with several surface elements (2), in particular glass surfaces (2), which are supported by profile elements (3) of the building envelope, which are connected to one another via one or more connecting nodes (4), wherein a sealing node element (5), which forms a trough-like sealing body, is present at at least one connection node (4) of the building envelope for sealing between the connection node (4) and surface elements (2), which are supported by the profile elements (3) connected to one another with this connection node (4), wherein the trough-like sealing body has a flat sealing base (6), with which it rests on the connecting node (4) and from which edge regions (7) of the sealing base (6) protrude at the circumferential boundaries thereof, which edge regions each comprise an edge base (8) and a sealing contour (9) carried by it, which sealing contour (9) adjoins one of the surface elements (2) in a sealing manner, wherein the raised edge regions (7) each extend in a region which extends between the connections of two directly adjacent profile elements (3) to the connecting node (4), and wherein no raised edge regions with sealing contours are present in the regions of the sealing node element (5) which are arranged in the region of the connections of the profile elements (3) to the connecting node (4), and wherein the sealing contours (9) of the upstanding edge regions (7) each have a substantially identical cross-section over their longitudinal extent, characterized in that the edge base (8) carrying the respective sealing contour (9) has a varying cross-section over its longitudinal extent, in particular such that it extends at a distance (a) substantially parallel to the surface of the surface element (2) against which the sealing contour (9) carried by it adjoins in a sealing manner.

2. Building envelope (1) according to one of the preceding claims, wherein the sealing node element (5) is formed in one piece.

3. Building envelope (1) according to one of the preceding claims, wherein the surface elements (2) are flat surface elements, in particular flat glass panes (2).

4. Building envelope (1) according to one of the preceding claims, wherein the sealing contour (9) is a sealing lip (9), and in particular wherein the sealing lip (9) points towards the interior of the sealing node element (5).

5. Building envelope (1) according to one of the preceding claims, wherein the sealing node element (5) in the regions of the connections of the profile elements (3) to the connecting node (4) is connected in a watertight manner to channel-like profile seals (10), in particular is welded or bonded , which have a flat sealing base (11), with which they rest on the respective profile element (3) connected there and from which edge regions (12) protrude at its longitudinal boundaries, each of which comprises an edge base (13) and a sealing contour (14), in particular a sealing lip (14), which is supported by the edge base and adjoins one of the surface elements (2) supported by the profile element (3) in a sealing manner.

6. Building envelope (1) according to claim 5, wherein the upstanding edge regions (7) of the sealing node element (5) in the regions of the adjacencies to the channel-like profile seals (10) have an essentially identical cross-section as the upstanding edge regions (12) of the channel-like profile seals (10).

7. Building envelope (1) according to one of the claims 5 to 6, wherein the sealing bases (6; 11) of the channel-like profile seals (10) and of the sealing node element (5) overlap in the region of the connections of the channel-like profile seals (10) to the sealing node element (5), in particular in such a way that the sealing base (6) of the sealing node element (5) lies on the sealing bases (11) of the channel-like profile seals (10).

8. Material set comprising a connecting node (4) with associated sealing node element (5) for a building facade (1) according to one of the preceding claims, wherein the connecting node (4) has connection areas for several profile elements (3) carrying surfaces elements (2) to be connected to it, and wherein the sealing node element (5) forms a trough-like sealing body with a flat sealing base (6) for resting on the connecting node (4), which has edge regions (7) projecting upwards from the latter at its circumferential boundaries, each comprising an edge base (8) and a sealing contour (9), in particular a sealing lip (9), carried by the latter, for sealingly adjoining one of the surface elements (2) of the building facade (1), wherein the sealing node element (5) is designed in such a way and can be arranged with its sealing base (6) on the connecting node (4) in such a intended manner that the upstanding edge regions (7) extend in each case in regions which extend between two directly adjacent connection areas of the connection node (4) for the profile elements to be connected to the connection node, and that in each case in the areas of the connection areas for the profile elements (3) there are no protruding edge areas with sealing contour of the sealing node element (5), and wherein the sealing contours (9) of the upstanding edge regions (7) of the sealing node element (5) each have a substantially identical cross-section over their longitudinal extent, characterized in that the edge base (8) supporting the respective sealing contour (9) has a varying cross-section over its longitudinal extent, in particular in such a way that, when the sealing node element (5) is arranged on the connection node (4) as intended, it extends at a distance (a) essentially parallel to a plane in which, when the connection node (4) is used as intended, the surface element (2) extends, which is supported by those profile elements (3) between whose connection regions the respective raised edge region (7) extends.

9. Material set according to claim 8, wherein the sealing node element (5) is formed in one piece.

10. Material set according to one of claims 8 to 9, wherein the connecting node (4) is produced by an additive manufacturing process.

11. Material set according to 1 one of claims 8 to 10, wherein the sealing node element (5) is produced by an additive manufacturing process, in particular by 3D printing.

12. Method for manufacturing the material set according to one of claims 8 to 11, wherein the connecting node (4) and the associated sealing node element (5) are modulated from a common data set and subsequently are manufactured by additive manufacturing processes.