EP1353020B1 - Insulating glazing with fixing system - Google Patents

Abstract

Insulation glazing has a holding system with at least two glass panes. One outer surface (2a) of one glass pane (2a') forms the facade outer side and the other outer surface (2b) of one glass pane (2b') forms the facade inner side. The glass panes are joined via spacers (3) so that a hollow space (4) is formed between the panes. A support construction (11) with holders is provided for the insulation glazing. The holders interact directly on the glass pane which forms the facade inner side. A supporting element (10) connects the support construction via the insulation glazing and supports the glass pane forming facade outer side. The supporting element partially encompasses both glass panes. Preferred Features: The supporting element has a longitudinal connecting element, preferably made from a wire element of metal or plastic, which encompasses the insulation glazing in a corner in a close strip.

Description

The invention relates to an insulating glazing with holding system, which is preferably provided for a glass facade, with at least two glass panes, wherein at least one outer surface of a glass pane, the facade outside and at least one outer surface of a glass pane forms the facade inside, wherein the glass sheets are connected via at least one spacer and at least form a cavity between the glass sheets, wherein a support structure is provided with holders for the insulating glazing.

In modern construction the material glass is increasingly used. For reasons of energy saving mainly multi-pane insulating glasses are used, wherein the individual glass sheets are glued together by means of spacers. Regulations and laws, such as the Construction Products Directive and the Construction Products Act, make specific demands on the glass itself and the construction when using glass in construction. Above all, when glass is installed outdoors in the form of, for example, glass facades, the safety of persons in the traffic area of the facade must be ensured. For example, the overall structure must be dimensioned so that no glass panes can fall down under climatic conditions such as wind load and / or snow load. In addition, in the event of breakage of a pane of glass, no large and heavy fragments may fall which could kill people. For this reason, usually a VSG (V erbund s afety g las), as in automobile windshields, used. In laminated safety glass, several thermally and / or mechanically preloaded individual disks are usually glued together with films, such as PVB (polyvinylbutyl). Through the pre-treatment of the individual panes and the laminated composite construction VSG breaks into many small and lightweight individual pieces.

To prevent falling of a whole glass pane, the glass sheets are very often held as a filler by frame structures. So will in the Patent DE 36 24 491 C3 a holding system for insulating glazings described. In this writing is in FIG. 2 a multi-pane double-glazed windows shown, with two staggered glass panels are mounted on the facade outside with the support structure located on the inside of the facade. This holding system shows a visually disturbing edge surrounding the insulating glazing. These frame structures and brackets look visually very disturbing, especially because of the transparent glass. So it is the desire of many customers to reduce these annoying frame parts and brackets or omit.

1. a) einer Isolierverglasung (Isolierglaselement 1) mit Haltesystem (Zuganker 7), wobei die Isolierverglasung (1) mindestens zwei Glasscheiben (Einzelscheiben 4, 5) aufweist, wobei mindestens eine Aussenfläche einer ersten der Glasscheiben (4') die Fassadenaussenseite und mindestens eine Aussenfläche einer zweiten der Glasscheiben (5) die Fassadeninnenseite bildet, wobei die Glasscheiben 4, 5) über mindestens einen Abstandshalter (Abstandshalterrahmen 2) verbunden sind und mindestens einen Hohlraum (Innenraum 3) zwischen den Glasscheiben (4, 5) bilden, und
2. b) einer Tragkonstruktion mit Halterungen (Befestigungsbeschläge 6) für die Isolierverglasung, wobei die Halterungen (6) ausschliesslich und unmittelbar an der zweiten, die Fassadeninnenseite bildende Glasscheibe (5') angreifen.

It will continue on the publication EP-A-0 751 276 which discloses a glass facade consisting of:

1. a) an insulating glazing (insulating glass element 1) with a holding system (tie rod 7), wherein the insulating glazing (1) at least two glass panes (individual panes 4, 5), wherein at least one outer surface of a first of the glass panes (4 ') the facade outer side and at least one outer surface a second of the glass panes (5) forms the facade inside, wherein the glass panes 4, 5) via at least one spacer (spacer frame 2) are connected and at least one cavity (interior space 3) between the glass panes (4, 5) form, and
2. b) a support structure with brackets (mounting hardware 6) for the insulating glazing, wherein the brackets (6) exclusively and directly on the second, the facade inside forming glass (5 ') attack.

The inventor has made it his mission to make insulating glazings, preferably for glass facades, such that in compliance with all safety-relevant requirements optically disturbing frame and fixtures are largely avoided.

The object is solved by the features of the first claim. Advantageous developments of the invention are the subject of the subordinate claims.

Accordingly, the inventor proposes to equip a glass facade with the features of claim 1.

Through this embodiment of the holder ensures that the visually disturbing impression of brackets, especially in the exterior facade area is reduced to a minimum. In addition, the support elements meet the task according to the required regulations to derive the weight of each individual disc, in case of failure of the central Scheibenverklebung on the building. This is achieved in that the support element at least partially surrounds the glass panes, whereby a positive connection of the glass pane, which form the facade inside and the glass pane which forms the facade outside, is created. To define a positive connection in which parts contours interlock, is on Dubbel: "Paperback for Mechanical Engineering" 15th edition; See chapter Component Connections on page 388.

The support elements can be chosen in their dimensions so that they are barely visible on the facade exterior and facade interior. The previously visually very disturbing frame systems are thereby avoided and it creates the impression of a glass façade.

The inventor points out that elements which are introduced in the intermediate space of the glass panes, such as additional pane spacers, are not to be understood as supporting elements.

Such a support element can be realized in a particularly simple manner by means of at least one elongated connection element. By an elongated connection element, the inventor understands elements such as a wire, a string or a closable clip element of metal and / or plastic, which circulate the insulating glazing in the region of a corner in a closed path. Such a closed track can be realized by a wire whose ends are twisted. This elongated connecting element creates a mechanical connection between the outer side of the facade and the facade inside glass pane and thus the legally required mechanical connection of all glass with the building. A pure bond is not a legally compliant connection.

It is advantageous if the at least one elongated connecting element extends at least partially in at least one groove. The groove prevents the elongated connecting element from slipping off. In addition, in the case of failure of the central bonding and under the action of force by the elongate connecting element, the groove acts as a predetermined breaking point of the glass pane. Such a groove can particularly easy on the glass surface, the outer facade surface, and / or on the glass surface, which forms the facade inner surface, are ground. The groove can also be mounted on one or both sides of the edge of the glazing.

A variant of the holding system may be that the support elements consist of at least 2-legged angles whose leg length extends only over part of the edge length of the double glazing. These angles are attached to the insulating glazing, for example by a safety wire, which surrounds the insulating glazing at the edge. The supporting elements are mainly made of metal because of their supporting function. Due to their heat-conducting properties, metals show the undesired effect of thermal bridge formation already described above. For this reason, a limitation of the leg length of the support elements makes sense. The resulting gaps between two adjacent insulating glazings can be inexpensively sealed, for example with a transparent silicone. The support elements transferred in the event of failure of the adhesive bond, the weight of the outside facade glass panels to the support structure and thus to the building. Since other forces, for example shear forces, act on the glass panes on facades, partly due to wind pressure and wind suction, a more homogeneous force transfer to the building is made possible by the 2-limb structure of the support elements.

According to the underlying idea of the invention, the inventor also proposes that the width of the angle is adapted to the edge of the insulating glazing, that both the outside of the facade forming glass as also the facade inside forming glass is supported by the support element wherein the angle is not wider than the edge width of the double glazing. As a result, optically disturbing surfaces on the facade outside and the facade inside are barely visible.

The inventor has recognized that the support elements should be designed so that they can not fall out of the spaces between adjacent glazing. For this reason, the inventor proposes to make constrictions along the leg length of the support elements. These constrictions, which engage the edge of the insulating glass, act as a mechanical locking of the support elements. In addition, can be inserted in these constrictions of the edge on the circumference of the insulating glazing security wire, which thus fixes the support member to the glazing.

In a particular embodiment, the support elements may have at least one retaining element per leg. This holding element can be realized by simply punching or folding a leg part surface at the leg end or at the leg intersection. For example, insulating glazings often have an elastic bond between the adjacent glass panes in the edge region. In the bond, the holding elements can be easily pressed. A particularly secure method to attach the support elements to the glazing is a screw connection of the support elements with the spacers of the glazing.

It is very advantageous if the support elements in the corner region have connecting surfaces which are arranged perpendicular to the leg surface. These connection surfaces can open the façade outside of the glazing, preferably exclusively on the outside facade of the glazing, be arranged. The connecting surfaces can be welded as triangles or quarter-circular surfaces between the legs of the support elements. If, for example, a wind suction, the glass pane of the facade outside of the bond with the spacer to solve, it prevents the glass pane can fall down as a whole piece. The connecting surfaces cause splintering of the glass pane. This function is required by a legal requirement. So far, these so-called emergency brackets were usually designed as a full-page surrounding frame. In the embodiment of the invention, the connecting surfaces in the corners form the required emergency brackets. Since these connection surfaces do not wrap around the insulating glass on the complete side, they are visually barely perceptible.

An advantageous embodiment of the invention provides that in the glass pane, which is arranged to the facade inside, at least one opening is attached. This opening may be a bore which has a smaller cross-section towards the inside of the facade, for example a conically narrowing bore. The composite construction of the glass pane but also allows a layer by layer step-shaped cross-sectional constriction of the opening.

The opening, which can be realized very easily, acts as a connection point of the holder with the insulating glazing.

It should be mentioned at this point that even adhesive joints between the bracket and the glazing are technically feasible, but this method of connection is contrary to the legal provisions.

The inventor also proposes that in this connection point engages a bolt element elastically connected to the holder. Since laminated safety glass, especially in the area of edges, are very susceptible to breakage, this elastic storage makes sense. The elastic bearing can be realized by a rubber sealing element which is arranged between the contact surface of the opening and the engaging bolt element. But also an elastic storage in the form of a vibration damper between a holder of the glazing and the support structure is conceivable.

In insulating glazings with cavities, which are usually filling gases, these cavities are sealed airtight to the outside. The opening described above could endanger this airtight completion of a cavity. For this reason, the inventor proposes not to place the glass pane with the openings according to the invention directly adjacent to a cavity, but instead to arrange a further glass pane therebetween.

As a further improvement is proposed by the inventor in the invention with the insulating glazing with holding system to use insulating glazings having two or more cavities. As a result, the heat transfer coefficient of the insulating glazing, generally referred to as k value or U value can be reduced. The loss of heat output per façade surface is thereby reduced and follows the positive trend towards energy savings. Furthermore, the support elements according to the invention have a positive effect on the unwanted heat losses, occupy a minimal area of the total facade and thereby represent only minimal heat or cold bridges.

Additional features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings.

Figur 1 bis Figur 2:

Ausführungsvarianten des 2-schenkligen Winkels in verschiedenen Ansichten;

Figur 3:

Schnitt durch eine erfindungsgemäße Isolierverglasung mit Nut und Draht;

Figur 4:

Isolierverglasung mit Draht, der in einer Nut verläuft;

Figur 5:

Isolierverglasung mit Draht, der in zwei Nuten verläuft;

Figur 6:

Erfindungsgemäße Isolierverglasung mit Haltesystem;

Figur 7:

Schnitt durch die erfindungsgemäße Isolierverglasung mit Halterung und Bolzenelement;

Figur 8:

Ansicht von der Fassadeninnenseite auf eine erfindungsgemäße Isolierverglasung mit Haltesystem.

The invention will be explained in more detail with reference to the drawings. They show:

FIG. 1 to FIG. 2:

Variants of the 2-legged angle in different views;

FIG. 3:

Section through an insulating glazing according to the invention with groove and wire;

FIG. 4:

Insulating glazing with wire extending in a groove;

FIG. 5:

Insulating glazing with wire, which runs in two grooves;

FIG. 6:

Inventive insulating glazing with holding system;

FIG. 7:

Section through the insulating glazing invention with bracket and bolt element;

FIG. 8:

View of the façade interior on an insulating glazing according to the invention with a holding system.

The FIG. 1 shows an embodiment of the support element according to the invention. The support element consists of a 90 ° angle 5, which was made of a flat material with two equal long about 50 mm long legs. At the two leg ends partial surfaces are folded, which form the holding elements 7. These retaining elements 7 can engage in the edge sealing of the insulating glazing 1. In this embodiment, the attachment of this support element is very simple by, for example, a flat metal wire, the edge of the circumference of the insulating glazing and the angle 5 rotates realized.

The FIG. 2 shows a further embodiment of the support element according to the invention. The structure of the angle 5 corresponds to the structure of the angle 5 from FIG. 1 , only in this embodiment, in addition, a triangular connecting surface 8 in the vicinity of the leg intersection point attached. This connection surface 8 acts as an emergency support for the glass pane 2 b 'of the facade exterior of an insulating glazing 1.

The FIG. 3 shows a section perpendicular to the glass sheets 2, 2a ', 2b' of an insulating glazing invention 1. This insulating glazing 1 is formed by three glass sheets 2, 2a ', 2b'. A glass pane 2a 'forms the façade outside and two glued glass panes 2, 2b' are located on the façade inside, with only the glass pane 2b 'forms the facade inside. The glass sheet 2a 'is connected to the glass sheets 2,2b' by means of a spacer 3. This creates between the glass sheets 2a 'and 2, a thermally insulating acting cavity 4. The holder 12 of the support structure 11 (both not in FIG. 3 drawn in) are exclusive attached to the glass sheet 2b '. In the glass sheets 2a 'and 2b' a groove 9 is ground. In this groove 9, a wire 10, here a stainless steel wire, inserted and stretched around the glazing 1 and twisted at its ends. This results in a mechanical connection of the glass pane 2a 'with the glass pane 2b'.

The FIG. 4 shows a double glazing 1 with a, running in a groove 9 and the insulating glazing 1 rotating wire 10. In the corner of the glass pane 2a 'is a 2 millimeters deep and 1.5 millimeters wide groove 9 quarter-circle ground. In this groove 9, a stainless steel wire 10 is inserted, which is stretched around the insulating glazing 1. In case of failure of the adhesive bond between the glass panes 2, 2b 'and 2a', the weight of the glass panes 2a 'and forces acting on this glass pane 2a' by means of the stainless steel wire 10 on the glass sheets 2, 2b 'and thus transferred to the building. This wire 10 forms the support element in this embodiment. But it can also be attached in addition a 2-legged angle 5, wherein the wire 10, the two legs and the insulating glazing 1 can rotate. This results in a particularly secure design of the glass pane support.

The FIG. 5 shows a further possibility, a wire 10 in the region of the corners of an insulating glazing 1, to secure a glazing 1. In this embodiment, two grooves 9 are ground at the edge region of two adjacent edge sides of the insulating glazing 1.

The FIG. 6 shows a view from the facade inside of an insulating glazing 1 according to the invention with brackets 12 and supporting structure 11. The insulating glazing 1 consists of three glass panes 2, 2a ', 2b', wherein the glass pane 2b 'forms the facade inside. By means of a spacer 3 and a 16 mm wide cavity, the glass panes 2, 2b 'are adhesively bonded to the glass pane 2a' forming the facade outside. Only the glass pane 2b 'is connected directly to the support structure 11 via the brackets 12. The glass sheet 2 is glued flat with a PVB film to the glass sheet 2b '. The glass sheet 2a ', which is glued with spacers 3 to the glass sheet 2 is additionally by the support members 5 (in FIG. 6 not shown) secured against accidental falling out.

The FIG. 7 shows a section through the insulating glazing 1 according to the invention with a holding system in the plane in which the opening for the bolt member 14 extends. The insulating glazing 1 consists of three 8 mm thick laminated safety glass panes 2, 2a ', 2b', wherein the glass pane 2b 'forms the facade inside. Via a spacer 3 and a 16mm wide cavity 4, the glass sheets 2, 2b 'with the facade outside forming glass sheet 2a' glued. In the glass pane 2b 'there is an opening 13 which tapers conically towards the inside of the facade. In this opening 13 a bolt element 14, which in this embodiment has a plate adapted to the opening 13, is fastened.

The FIG. 8 shows a view of the facade inside of an insulating glazing 1 according to the invention with a holding system. The insulating glazing 1 also consists in this embodiment of three each 8mm thick laminated safety glass panes 2, 2a ', 2b', wherein the glass sheet 2b 'forms the facade inside. About a spacer 3 and a 16mm wide Cavity 4, the glass sheets 2, 2b 'with the facade outside forming glass sheet 2a' glued. Four glass panes 2b 'of four insulating glazings 1 are fastened in the corner region by bolt elements 14 to a four-armed mount 12. Due to this shape of the holder 12, the visually disturbing impression is reduced only to the corner region of the insulating glazing 1. Furthermore, in the corner region of each insulating glazing 1, a quarter-circle-shaped groove with therein extending stainless steel wire 10 can be seen. This stainless steel wire 10 runs around the insulating glazing 1 and thus represents an additional mechanical connection of the glass panes 2a 'and 2b'. The four-quarter circular stainless steel wires complement each other with four insulating glazings 1 to circles that do not visually disturb the view of a glass facade. The insulating glazings 1 are provided with seals 16 in the intermediate area.

It is understood that the abovementioned features of the invention can be used not only in the particular combination specified, but also in other combinations or in isolation, without departing from the scope of the invention.

By virtue of the insulating glazing according to the invention, insulating glazings can now be designed in such a way that, in compliance with all safety-relevant requirements, optically disturbing frames and holding devices are largely avoided.

LIST OF REFERENCE NUMBERS

1

glazing

2

glass panes

2a

Outer surface of the glass sheet 2a ', which is directed to the facade outside

2 B

Outer surface of the glass sheet 2b ', which is directed to the facade inside

2a '

Glass pane that forms the façade outside

2 B'

Glass pane forming the façade inside

3

spacer

4

cavity

5

Angle / support element

6

constriction

7

retaining element

8th

interface

9

groove

10

wire

10a

safety wire

11

supporting structure

12

brackets

13

opening

14

bolt element

15

PVB sheet

16

seal

Claims (17)

1. Glass facade, at least comprising

   1.1 an insulating glazing unit (1) with a retaining system, it being the case that the insulating glazing unit (1) has at least two glass panes (2), that at least one outer surface (2a) of a first of the glass panes (2a') forms the outside of the facade and at least one outer surface (2b) of a second of the glass panes (2b') forms the inside of the facade, and the glass panes (2) are connected via at least one spacer (3), as a result of which at least one cavity (4) is formed between the glass panes (2), and

   1.2 a load-bearing structure (11) with holders (12) for the insulating glazing unit (1),
   characterized in that

   1.3 the holders (12) act exclusively, and directly, on the second glass pane (2b'), which forms the inside of the facade, and at least one supporting element (5, 10) is provided to form the retaining system, this supporting element being connected to the load-bearing structure (11) exclusively via the insulating glazing unit (1), supporting at least the first glass pane (2a'), which forms the outside of the facade, and enclosing the outer surface (2a) of the first glass pane (2a') in the region of at least one corner, so that, in the event of the first glass pane (2a') being released from the adhesive bonding of the spacer (3), and subsequently falling down, this glass pane (2a') is caused to splinter.
2. Glass facade according to preceding Patent Claim 1, characterized in that the at least one supporting element (5, 10) has at least one elongate connecting element (10), preferably a wire element which is made of metal and/or plastic and runs around the insulating glazing unit (1), over a continuous path, in the region of a corner.
3. Glass facade according to preceding Patent Claim 2, characterized in that the at least one elongate connecting element (10) runs, at least in part, in at least one groove (9).
4. Glass facade according to preceding Patent Claim 3, characterized in that the at least one groove (9) runs on the outer surface (2a) of the facade and on the inner surface (2b) of the facade.
5. Glass facade according to one of preceding Patent Claims 3 and 4, characterized in that the at least one groove (9) runs over the periphery of the insulating glazing unit (1) on one side or two sides.
6. Glass facade according to one of preceding Patent Claims 1 to 5, characterized in that at least one safety wire (10a) runs around the periphery of the insulating glazing unit (1).
7. Glass facade according to one of preceding Patent Claims 2 to 6, characterized in that, in addition to the at least one supporting element (10), there is provided a further supporting element (5), which has a 2-legged angle, of which the leg length extends only over part of the length of the periphery of the insulating glazing unit (1), and the at least one angle (5) is fastened on the insulating glazing unit (1).
8. Glass facade according to preceding Patent Claim 7, characterized in that the width of the angle (5) is adapted to the periphery of the insulating glazing unit (1) such that both the glass pane (2a'), which forms the outside of the facade, and the glass pane (2b'), which forms the inside of the facade, are supported by the angle (5).
9. Glass facade according to one of preceding Patent Claims 7 and 8, characterized in that the at least one angle (5) has narrowed portions (6) along the legs.
10. Glass facade according to one of preceding Patent Claims 7 to 9, characterized in that the angle (5) is fixed, preferably screwed, to the spacer (3) of the insulating glazing unit (1).
11. Glass facade according to one of preceding Patent Claims 7 to 10, characterized in that the angle (5) has on the outside of the facade of the insulating glazing unit (1), preferably exclusively on the outside of the facade, in the corner region a connecting surface (8) which is arranged perpendicularly to the leg surface.
12. Glass facade according to one of the preceding Patent Claims 1 to 11, characterized in that at least one opening (13) is made in the glass pane (2b'), which is arranged on the inside of the facade.
13. Glass facade according to preceding Patent Claim 12, characterized in that the opening (13) has a cross section which decreases in size in the direction of the inside of the facade, preferably a conical narrowing and/or a step-shaped narrowing.
14. Glass facade according to one of preceding Patent Claims 12 and 13, characterized in that the holder (12) has means for engaging in the opening (13).
15. Glass facade according to preceding Patent Claim 14, characterized by an engagement means being in the form of a bolt element (14) which is connected elastically to the holder (12).
16. Glass facade according to one of preceding Patent Claims 12 to 15, characterized in that the glass pane (2b') with the opening (13) has fastened on it a further glass pane (2), which is arranged in the direction of the outside of the facade.
17. Glass facade according to one of preceding Patent Claims 1 to 16, characterized in that the insulating glazing unit (1) has two cavities (4).

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