EP0410993A1

EP0410993A1 - Kit for glass facades.

Info

Publication number: EP0410993A1
Application number: EP89904552A
Authority: EP
Inventors: Guenter Werner
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-04-19
Filing date: 1989-04-18
Publication date: 1991-02-06
Anticipated expiration: 2009-04-18
Also published as: FI92094B; AU3417089A; FI905123A0; US5212922A; DE58902522D1; EP0410993B1; DK167032B1; FI92094C; DK247290A; WO1989010461A1; DK247290D0

Abstract

Bloc de construction pour façade en verre d'un immeuble, présentant, sur la face formant la partie extérieure de l'immeuble, en vue de constituer une infrastructure, des profilés porteurs (1) pouvant être mis en place, et des panneaux de verre (12) formant la surface extérieure de la façade. Les panneaux de verre (12) présentent au moins sur leurs deux bords verticaux, à l'intérieur et sur chacun de ces bords, un rail de retenue (13) appliqué par masticage, ces rails étant assemblés par liaison de forme avec les profilés porteurs (1). Les bords (19) des panneaux de verre (12) sont biseautés vers l'extérieur. Sur chacun des joints formés entre des panneaux de verre voisins (12) ou à leurs croisements, sont insérés des éléments d'ancrage (20, 33) assurant une liaison de forme avec les panneaux de verre (12), chacun de ces éléments recouvrant les bords biseautés (19) des panneaux de verre (12) et étant monté amovible, tout en assurant une liaison de forme avec le profilé porteur de forme (1).Building block for a glass facade of a building, having, on the face forming the external part of the building, with a view to constituting an infrastructure, load-bearing profiles (1) which can be put in place, and glass panels (12) forming the exterior surface of the facade. The glass panels (12) have at least on their two vertical edges, inside and on each of these edges, a retaining rail (13) applied by puttying, these rails being assembled by form connection with the support profiles (1). The edges (19) of the glass panels (12) are bevelled towards the outside. On each of the joints formed between neighboring glass panels (12) or at their intersections, are inserted anchoring elements (20, 33) ensuring a form connection with the glass panels (12), each of these elements covering the bevelled edges (19) of the glass panels (12) and being removably mounted, while ensuring a shape connection with the shape-carrying profile (1).

Description

Kit for glass facade

The invention relates to a kit for a glass facade for a building, with support profiles that can be attached to the outer surface of the building to form a facade substructure, and with glass panes that form the facade outer surface, each of which has an adhesive holding rail on the inside at least on its two vertical edges, which can be positively connected to the supporting profiles .

In general, glass facades have become increasingly popular both for new buildings and for the renovation of older buildings. Office buildings in particular are increasingly being constructed with glass facades.

The glass facade can directly form the outer skin of the building. In this case, the facade substructure consisting of the support profiles is attached to the outside of a supporting building structure made of steel profiles or concrete. If the glass facade is designed as a warm facade, insulating glass panes are usually used. To secure the glass panes positively, holding profiles connected to the facade substructure reach around the edges of the glass panes. These holding profiles therefore form a frame projecting beyond the outer surfaces of the glass panes, which, however, makes cleaning the glass panes more difficult and is less desirable for aesthetic reasons because it divides the glass facade optically too strongly into a grid of individual glass panes.

In order to obtain a smooth exterior facade surface that is desirable for aesthetic reasons and is inexpensive for cleaning and from which no parts protrude, it is known for a glass facade that consists of a kit of the type mentioned at the beginning (brochure DOW CORNING) that the glass panes are used exclusively by the to attach glued mounting rails to the

Facade substructure are attached. This gives the glass facade a largely smooth outer surface, which is only slightly rasterized by the joints between adjacent glass panes. For safety reasons, such glass facades are not yet generally approved by the building authorities without positive locking of the glass panes. The concerns raised essentially derive from the fact that there is insufficient knowledge about the behavior of the adhesive after a long period of use and intensive exposure to environmental influences and sunlight.

In some cases, such glass facades were admitted, but on the condition that a sufficiently large area at the foot of the glass facade is blocked for access by people. In other cases, additional positive holding elements were prescribed, consisting of the edges of the glass panes in some places loose anchoring components that are connected to the facade substructure. However, these anchoring components protrude on the outside of the facade and thus hinder the cleaning process and are also aesthetically disruptive.

The object of the invention is therefore to provide a kit for a glass facade of the type mentioned, in which a positive locking of the glass panes is ensured without parts protruding beyond the outer surfaces of the glass panes.

This object is achieved in that the edges of the glass panes are chamfered to the outside and that an anchoring body, which positively secures the glass panes, is inserted at the joints formed between adjacent glass panes, which overlaps the chamfered edges of the glass panes and is positively and releasably connected to the supporting profile is.

This anchoring body does not protrude beyond the outside of the glass panes, but holds the glass panes securely even in the event that the adhesive connection of the holding rails should come loose.

The anchoring bodies can be anchoring crosses inserted at the crossing points of the joints or elongated anchoring profiles inserted between adjacent edges of the glass panes.

Additional joint profiles are preferably used between the anchoring crosses. As a result, all joints formed between the glass panes are covered, so that an essentially dense glass facade is created. This effect can be further supported by the fact that the arms of the anchoring crosses, like the joint profiles, each carry a sealing strip on their lateral inclined surfaces which engage with the two edges of the glass panes. This elastic sealing strip also serves to absorb thermal expansion of the glass panes without tension. The glass facade according to the invention is suitable for forming both a warm facade and a cold facade. The glass facade as a cold facade is hung in front of a building facade with windows and forms additional heat and sound insulation. In this embodiment, the curtain-type cold facade is particularly suitable for retrofitting to existing buildings, the existing facade of which can remain essentially unchanged. The sealing achieved between the glass panes prevents heat loss and in particular the penetration of dirt, rain water and snow.

In order to enable adjustment of the glass pane suspension with simple measures, a further development of the invention provides that the vertical holding rails glued to the glass panes each have at least one projecting hanging element on their rear side facing away from the glass pane, which can be hung on a supporting component which is attached to the supporting profile is height adjustable attached.

This height-adjustable attachment of the supporting component makes it possible to compensate for deviations caused by manufacturing tolerances and assembly inaccuracies of the facade substructure so that the Glass pane can be attached to the facade substructure at the specified height and exactly vertically. Since the supporting component is accessible from the outside as long as the glass pane is not suspended, the supporting components can be adjusted from the outside, for example by means of a gauge, before the glass pane is suspended. But it is also possible to hang the glass pane first, determine its positional deviation, then unhook the glass pane again and adjust the height of the supporting component so that the positional deviation of the glass pane is compensated.

The projecting hooking element preferably forms a hook. According to a preferred embodiment of the invention, the support component can be a vertical support plate which is arranged parallel to the glass pane and which can be screwed onto the support profile. The hook of the suspension element then simply grips over the upper edge of this support plate.

An embodiment of the invention has proven to be particularly advantageous in which the support plate has a vertical elongated hole and a pin hole on top of each other at its two side edges, which can be attached to the support profile. The support plate can first be screwed onto the support profile through these two elongated holes. Then their position is measured or the glass pane is hung up and their position deviation is determined. Then - if necessary after unhooking the glass pane - the screwing of the support plate is loosened and moved at the elongated holes until the desired height adjustment has been made. Then the Support plate - if necessary after checking in and then unhooking the glass pane - pinned to the pin holes with the support profile, whereby the final, immovable height adjustment of the support plate takes place.

Further advantageous embodiments of the inventive concept are the subject of further dependent claims.

The invention is explained in more detail below using exemplary embodiments which are illustrated in the drawing. It shows:

1 is a horizontal partial section of a glass facade designed as a cold facade,

2 is a view in the direction of arrow II in Fig. 1 in the intersection of the joints between the glass panes,

3 is a side view of an anchoring cross,

4 in a section similar to FIG. 1, a modified embodiment of a glass facade as a warm facade,

Fig. 5 is a partial section along the line V-V in Fig. 4 and

Fig. 6 is a plan view of the support plate used in Fig. 4.

The glass facade for a building consisting of the kit according to the invention, designed as a cold facade, the essential parts of which are shown in FIG. 1, has one consisting of support profiles 1 existing facade substructure, the support profiles 1 being arranged vertically and horizontally along the edges of glass panes. 1 shows a section through a vertical support profile 1.

In cross section, the support profile 1 forms a U-shaped central section 2, which has an outer web surface 3 and two legs 4, 5 directed inward therefrom. One leg 4 is extended further inward compared to the other leg 5 and is laterally fastened by means of screws 6 to a vertical support bracket 7, which is attached to the outer wall of the building (not shown) on the one hand and projects into the U-shaped central section 2 on the other hand. The support bracket 7 can also be part of a support structure of a building.

An angle rail 8 extends laterally from the inner ends of the legs 4 and 5 of the U-shaped middle section 2, the inner angle leg 9 of which runs parallel to the facade surface and to which an outwardly directed angle leg 10 is connected perpendicularly thereto.

The glass panes 12 forming the facade outer surface 11 are each provided with a glued-on holding rail 13 at least on their two vertical edges. A permanently elastic adhesive layer 14 is provided between the holding rail 13 and the glass pane 12. The holding rail 13 has an angle leg 15 which is glued to the glass pane 12 and an angle leg 16 which extends inwards perpendicularly thereto. A plurality of suspension bolts 17 are fastened, preferably welded, at intervals on the angle leg 16, which are suspended in the suspension slots 18 of the angle legs 10 of the support profile 1. These suspension slots 18 run vertically in the angle legs 10 and are open at their upper end to the outside, so that the glass panes 12 connected to the suspension bolts 17 can be suspended.

As can be seen from FIG. 1, the suspension bolts 17 of the two vertical edges of each individual glass pane 12 are directed towards one another. The angle legs 16 of the holding rails 13 engage in the outwardly open space behind the angle legs 10.

On the outer sides of the two angle rails 8, a further angle rail 8a is provided in one piece, the outer angle leg 8b of which runs parallel to and at a distance from the angle leg 10 and covers the ends of the suspension bolts 17. The outer edge of the angle leg 8b is sealed off from the edge of the holding rail 13 by means of a sealing lip 8c.

The vertical and horizontal edges 19 of the glass panes 12 are chamfered to the outside, for example below 45 ^Λ , as shown in the drawing. A cross-sectionally substantially V-shaped joint profile 20 engages over the chamfered edges 19, but without over the outer surface 11 of the glass panes 12 protrude. The V-shaped joint profile 20 is integrally connected at its apex to an inwardly extending rib 21. The joint profile 20 has on its outside a flat longitudinal groove 23 which extends over a substantial part of the width of the joint profile 20.

On the end face 24 of the web surface 3, a profile rail 25 is attached, which forms an outwardly open channel 26 into which the rib 21 projects. The bottom of the channel 26 is formed by a web wall 27 which has keyhole-shaped suspension openings 28. Head bolts 29 screwed into the rib 21 from behind are hooked into the suspension openings 28, as shown in FIG. 2. The threaded shaft of the head bolts 29 can be screwed into the rib 21 at the desired depth in order to align the joint profiles 20 and can be secured in this position by a lock nut 30.

The connection between the profile rail 25 and the web surface 3 is preferably made by connecting elements 31 made of plastic, which are designed as sliding blocks and engage in undercut grooves 32 in the mutually facing surfaces of the profile rail 25 and the web surface 3.

At the intersections (FIG. 2) of the joints formed between adjacent glass panes 12, an anchoring cross 33 is inserted, which overlaps the chamfered edges 19 of the glass panes 12. Each anchoring cross is positively and releasably connected to the support profile 1, preferably screwed. The arms 33a of the anchoring cross 33 are approximately V-shaped in cross section and are integrally connected at their apex to an inwardly projecting rib 33b. At the crossing point, the ribs 33b are integrally connected to a bushing 33c which extends over the entire depth of the anchoring cross 33 and preferably up to the supporting profile 1 (FIG. 3). In a central screw bore 33d countersunk on the outside, a screw 33e is arranged, the head of which is countersunk and which is screwed into the support profile 1.

The anchoring crosses 33 form the form-fitting securing of the glass panes 12, while the joint profiles 20 essentially close only the joints between the glass panes 12. The anchoring crosses 33 also prevent the joint profiles 20 from being unintentionally detached.

The joint profiles 20 and the arms 33a of the

Anchoring crosses 33e each carry an elastic sealing strip 22, for example made of an elastomer, on the lateral inclined surfaces that overlap the two edges 19 of the glass panes 12. As a result, the two adjacent edges 19 are sealed off from one another, so that all of the glass panes 12 of the facade form a substantially sealed surface.

The anchoring crosses 33 can be attached after the glass panes 12 have been hung in and can be removed for dismantling a glass pane, for example in the event of damage.

Instead, the form-fitting securing of the glass panes 12 can also be carried out by means of the joint profiles 20 if these are designed as elongated anchoring profiles 20, as shown in FIG. 1. The embodiment of a warm facade according to FIG. 4 has one consisting of vertical support profiles 101 and horizontal support profiles 102

Facade substructure. The support profiles 101 and 102 are each arranged behind the joints of glass panes 103, which in the exemplary embodiment shown are designed as double glazing with double glazing. Instead of transparent glass panes, opaque, for example enamelled glass panes or similar facade panels can also be used.

The support profile 101 has on its rear side facing the inside of the building a rear wall 104 which is interrupted by a center piece 105 which is displaced outwards. A leg 106 projects inward from the rear wall 104 and is intended for attachment to the building.

The support profile 101 overall forms an outwardly open trough, in which vertical webs 108, 109 project from one another from the side walls 107 and from the central section 105 and are arranged parallel to the plane of the glass panes 103. On these mutually projecting, spaced-apart webs 108, 109, support plates 110 are screwed with their two vertical edges.

The glass panes 103 forming the facade outer surfaces are each provided with an adhered holding rail 111 on their two vertical edges. In the illustrated embodiment, the holding rail 111 is designed as a rectangular hollow profile. A permanently elastic adhesive layer 112 is arranged in each case between the holding rail 111 and the glass pane 103. From the back of the holding rail 111, a vertical web strip 113 protrudes in one piece. As can be seen in FIG. 5, this web strip 113 is released in such a way that it forms a hook 114 which, for example, is open at the bottom and which, in the suspended state, reaches over the upper edge of the support plate 110.

The support plate 110 shown in a front view in FIG. 6 has a vertical elongated hole 115 and a pin bore 116 on each of its two side edges one above the other. The mounting plates 110 are screwed to the webs 108, 109 so that they can be adjusted in height by means of fastening screws 117 which protrude through the elongated holes 115.

For lateral guidance of the support plates 110, ribs 118 can protrude outward from the webs 108. On the other hand, the support plates 110 are guided through the projecting walls of a retaining groove 123 on the central part 105.

The elongated holes 115 allow the height adjustment of the holding plates 110 on the screws 117. For the final, immovable fastening of the support plates 110, holes are made through the pin holes 116 after the height adjustment of the support plates 110 into the webs 108, 109 and the support plates 110 are through these holes pinned through.

A joint profile 119 arranged between the adjacent, externally bevelled edges of the glass panes 103 is provided over its entire length with an inwardly projecting web strip 120 which has a heat-insulating middle piece 121 made of plastic can, so that it does not form a cold bridge. On its inner edge, the web strip 120 has two spaced-apart holding lips 122 which engage with their toothed outer surface in the holding groove 123.

The two holding rails 111 each have a projecting sealing lip 124 on their side surface facing the adjacent glass pane 103, which is bent over in the assembled state and lies sealingly against the web strip 120 of the joint profile 119. As a result, and optionally by means of an elastic sealing layer 125 on the edges of the joint profile 119, a seal between adjacent glass panes 103 in the joint area is achieved.

The structure is similar in the area of the horizontal joints between the glass panes 103. Here, however, the holding rails 126 glued to the horizontal edges of the glass panes 103 do not have any projecting web strips on the rear.

Claims

Kit for glass facade

1.Kit for a glass facade for a building, with support profiles (1, 101, 102) that can be attached to the outer surface of the building to form a facade substructure and with glass panes (12, 103) forming the outer surface of the facade, each of which has one glued inside at least on its two vertical edges Have holding rails (13, 111) which can be positively connected to the support profiles (1, 101, 102), characterized in that the edges (19) of the glass panes (12, 103) are bevelled outwards and on the between adjacent glass panes (12, 103) formed joints an anchoring body (20, 33, 119)), which overlaps the chamfered edges (19) of the glass panes (12, 103) and with the supporting profile ( 1, 101, 102)) is positively and releasably connected.

2. Kit according to claim 1, characterized in that the anchoring body is an anchoring cross (33) inserted at a respective intersection of the joints formed between adjacent glass panes (12, 103).

3. Kit according to claim 1, characterized in that the anchoring body is an elongated anchoring profile (20, 119) inserted between adjacent edges (19) of the glass panes (12, 103).

4. Kit according to claim 2 or 3, characterized in that the anchoring cross (33) and / or the anchoring profile (20) on its with the edges (19) of the glass panes (12) engaging lateral inclined surfaces each carries a sealing strip.

5. Kit according to claim 2, characterized in that the arms of the anchoring cross (33) are approximately V-shaped in cross section and have an inwardly extending rib (33b) at their apex.

6. Kit according to claim 2, characterized in that the arms of the anchoring cross (33) have on their outside a longitudinal groove extending over a substantial part of the width of the arm (33a).

7. Kit according to claim 1, characterized in that the anchoring cross (33) is screwed onto the support profile (1, 101) by means of a screw (33e) arranged in the center of the cross.

8. Kit according to claim 7, characterized in that in the center of the cross over the entire depth of the anchoring cross (33) extending sleeve (33c) is formed, which has a recessed from the outside of the anchoring cross (33) screw hole (33d).

9. Kit according to claim 8, characterized in that the ribs (33b) of the arms (33a) of the anchoring cross (33) are integrally connected to the sleeve (33c) and have the same depth as this.

10. Kit according to claim 1, characterized in that the joints between adjacent glass panes (12, 103) in the section between two anchoring crosses (33) each receive a beveled edge overlapping joint profile (20, 119).

11. Kit according to claim 3, characterized in that the anchoring profile (20) has a plurality of inwardly projecting head bolts (29) which are suspended in keyhole-shaped suspension openings (28).

12. Kit according to claim 11, characterized in that the head olzen (29) receiving suspension openings (28) are formed on a detachably connected to the support profile (1) rail (25).

13. Kit according to claims 3 or 10, characterized in that the anchoring profile or the joint profile (20, 119) is connected to the supporting profile (1, 101) via a heat-insulating web (31, 121).

14. Kit according to claim 12, characterized in that sealing beads are attached laterally to the profile rail (25), which abut the edges of inner glass panes of insulating glass.

15. Kit according to claim 1, characterized in that the vertical holding rails (111) glued to the glass panes (103) each have a projecting hanging element (113, 114) on their rear side facing away from the glass pane (103), which is attached to a supporting component (110 ) can be suspended, which is fastened to the support profile (101) in a height-adjustable manner.

16. Kit according to claim 15, characterized in that the projecting suspension element forms a hook (114).

17. Kit according to claim 15 or 16, characterized in that the support member is a vertical, parallel to the glass pane (103) arranged support plate (110) which can be screwed onto the support profile (119), and that the hook (114) over the upper edge the support plate (110) engages.

18. Kit according to claim 17, characterized in that the support plate (110) has a vertical elongated hole and a pin bore (116) at their two side edges one above the other.

19. Kit according to claim 18, characterized in that the support profile (101) forms an outwardly open trough in which two vertical webs (108, 109) project at a distance from one another and that the support plate (110) with its two side edges are screwed to these webs (108, 109) through the elongated holes (115) and pinned through the pin bores (116).

20. Kit according to claim 16, characterized in that the hook (114) is formed on a vertical web strip (113) projecting rearward from the holding rail (111).

21. Kit according to one of claims 1 to 20, characterized in that a joint profile (119) arranged between adjacent edges of the glass panes (103) is provided over its entire length with an inwardly projecting web strip (120) which is in a holding groove ( 123) of the support profile (1 or 2) engages.

22. Kit according to claim 21, characterized in that the holding rail (111, 126) on its side of the holding rail (111, 126) facing the adjacent glass pane (103) has a projecting sealing lip (124) which is on both sides of the web strip ( 120) of the joint profile (119).