EP2146039B1 - Insulating glass pane - Google Patents

Description

The present invention relates to an insulating glass pane according to the preamble of claim 1. Accordingly, the invention relates in particular to an insulating glass pane consisting of at least two outer panes and an edge seal, which has a spacing profile.

The publication DE 20 2006 000 835 U1 relates to an insulating glass pane with a reinforced edge composite consisting of at least two individual panes and a spacer profile of metal or a glass fiber reinforced plastic. The profile is glued over two contact surfaces with the individual panes.

The publication DE 1 197 603 B discloses all features of the preamble of claim 1 and claim 4 and also relates to an insulating glass pane with a spacer consisting of two irregularly shaped profile parts, their facing surfaces approximately complementary to each other and by a Groove are spaced apart, which is filled with a permanently elastic resin adhesive.

The publication US 5,568,714 A relates to an insulating glass pane with a two-part spacer, which consists of two approximately box-shaped hollow profiles made of steel or aluminum, which are connected at their sides facing each other via two insulating elements.

The publication WO 84/01798 A1 relates to a multi-pane window with U-shaped spacers between the individual panes. The spacers are made of aluminum or steel and are designed to stiffen and hold the side edges.

The publication DE 1 265 385 B relates to a solid spacer between two panes of glass, through which passes a tubular element, at the outer end of which a desiccant container open to the outside air is arranged.

The publication DE 27 30 119 A1 relates to a multi-pane window with a spacer between individual slices, which is attached with cement, and in which a desiccant element can be inserted.

Such an insulating glass pane of the type mentioned is generally known in principle from the prior art. It contains the two outer panes, wherein generally a first outer pane is arranged inside a room, a house, a warehouse or generally a building, and a second outer pane is arranged outside the building. Within the two outer panes, a thermally insulating space is arranged. The advantage lies especially in the larger heat and sound insulation. The insulating glass pane therefore forms today the common way of glazing. Normally, the edge seal consists of a hollow profile made of metal or plastic, in which a desiccant for the function of drying the trapped air in the space of the insulating glass is housed. To the outside, an additional seal made of silicone or polysulfide is attached. In general, the marginal composite does not assume any static function. Under pressure The insulating glass pane behaves statically more or less like two outer panes. The previous spacers, as well as the previous sealing materials, are not able to connect the two outer sheaves so far shear-resistant, that the two outer plates can be worn without visible support profiles.

Based on this problem, the present invention seeks to further develop an insulating glass pane of the type mentioned in that the spacing profile works as a shear stiff joint, and that the insulating glass has a self-supporting structure has, so waives visible support profiles for supporting the insulating glass or these can be at least significantly reduced and the outer panes eg due to climatic loads can twist to each other without causing high voltages in the spacing profile and in the adhesive layer.

This object is solved by the subject matter of independent claim 1. Advantageous developments are specified in the dependent claims.

To solve the problem it is proposed that in an insulating glass pane of the type mentioned, the spacer profile has two opposite contact surfaces, which are shear-resistant connected to the outer plates via an adhesive layer, wherein the spacer profile further comprises at least one articulated region which is formed such that the both contact surfaces are at least partially rotated, so as to reduce stresses in the adhesive layer.

This object is achieved by an insulating glass with the features of the characterizing part of the independent claims 1 and 4.

The achievable with the inventive solution advantages are obvious. The spacer profile consists of a high-strength plastic material, in particular of a glass fiber reinforced plastic. As a result, a material is used which has a relatively low thermal conductivity and still has high strengths in an advantageous manner. Another advantage lies in the thermal expansion coefficient, which is very similar between glass and glass fiber reinforced plastic. This is important because no or only small additional forces arise here due to different elongation.

The connection of the spacer profile can be done either by appropriately high-strength adhesive or by high-strength composite films. The high-strength adhesive or the high-strength composite film may for example consist of a polymer, for. As polyvinyl butyral, ionoplast (polymer), semi-crystalline thermoplastic or other material, which has the required adhesive strength, durability and thermal stability. Especially the ionoplast polymer offers particularly high strength values. By combining the distance profile with the outer panes, a nearly monolithic load-bearing behavior of the edge area can be achieved here. Although some high-strength adhesives are already available for the façade area, gluing in the edge area is only possible if the profiles used there are adapted to these special requirements.

In the edge region of the panes, particularly due to the climatic loads, strong angle changes occur at the contact surfaces. Depending on the stiffness of the adhesive and the distance profile leads to more or less strong restraints, and thus high tensile stresses at the edges of the bonds, which can lead to an overload of the bond.

In one possible implementation of the inventive solution, a viscoelastic, two-component adhesive based on epoxy resin is used. Such adhesives have a tensile shear strength of at least 10 / mm ² compared to the adhesive surfaces and its modulus of elasticity under short-term loading is greater than 1000 N / mm ² . Of course, other adhesives or types of adhesives come into question.

In order to reduce the tensile stresses to a reasonable level, it is necessary that the spacer profile is designed so that this works as a shear-stiff joint. In this case, the spacer profile on two opposite contact surfaces, which are designed to be relatively uniformly thick, in order to produce as uniform as possible voltage curve in the adhesive layer. Furthermore, the spacing profile has at least one articulated region, which is designed such that the two contact surfaces are at least partially rotatable relative to each other. The axis of rotation of the joint preferably corresponds to the longitudinal axis of the profile. By the flexibility, it is possible that the outer plates, e.g. due to climate loads can rotate to each other without causing high voltages in the spacer profile and in the adhesive layer. Experience shows that the highest stresses occur in the region of the joint. The proposed material of the spacer profile can easily absorb these stresses. By means of this arrangement it is achieved that the stresses in the area of the contact surfaces are reduced, thereby reducing the load on the adhesive.

The spacer profile is designed in several parts. In the case of the two-part spacer profile, consisting of a first region and a second region, these regions are adhesively bonded to one another via bonding with a high-strength adhesive. Alternatively or additionally, the first region and the second region can be connected to one another by at least one mechanical connection part. In this case, the at least one mechanical connecting part may have a screw, a bolt and / or a terminal strip. The distance profile can be rotated as a joint around an axis or a point or as a taper be formed so that the contact surfaces are at least partially rotatable relative to each other.

In a preferred embodiment, the first region and the second region are each formed as a spacer profile element with an L-shaped cross-sectional geometry. Each of the spacer profile elements has a first leg and a second leg. The two first legs of the spacer profile elements are parallel to one of the two outer panes and are connected shear-resistant with the outer pane. The second leg of the first spacer profile element extends parallel to the second leg of the second spacer profile element, and the two second legs are connected at least partially. In each case an articulated region is formed in the connection region of the two limbs of each spacer profile element.

The spacing profile may also be designed so that one or more desiccants are integrated in one or more cavities of the profile. In a further embodiment, each of the desiccants can also be accommodated in an additional desiccant profile. But it can also be installed commercially available spacer profiles with desiccant.

Preferably, an additional profile is attached as an intermediate layer between the contact surfaces of the spacer profile and the outer panes with the aid of a transparent adhesive or a transparent film on at least one of the two outer panes.

For increased thermal insulation may be arranged in the space between the two outer panes at least one further disc or a film for forming a first and second space between the panes.

Furthermore, it is conceivable that in the case of an insulating glass pane which has two outer panes and one further pane or foil, a pressure equalization is provided. In this case, the further disc or foil is at least partially flexible. In a possible realization of the pressure compensation is provided at least one capillary tube, which connects a disc space with the outside atmosphere for the purpose of pressure equalization. Alternatively or additionally, it is conceivable that at least one membrane, in particular an air-permeable but not water-permeable membrane, is provided in a channel which, for the purpose of pressure equalization, connects a space between the panes to the outside atmosphere.

Fig. 1

eine Querschnittsansicht auf den Randbereich einer nicht als Erfindung beanspruchten Isolierglasscheibe, wobei der Druck im Zwischenraum zwischen den beiden Außenscheiben im Wesentlichen identisch mit dem Außendruck ist;

Fig. 2

die in Figur 1 dargestellte Ausführungsform bei Belastung des Scheibenzwischenraums aufgrund der Klimalast;

Fig. 3

eine Querschnittsansicht auf einen Randbereich einer Isolierglasscheibe gemäß einer Ausführungsform der Erfindung;

Fig. 4

eine Querschnittsansicht auf den Randbereich einer Isolierglasscheibe gemäß einer weiteren Ausführungsform der Erfindung;

Fig. 5

eine Querschnittsansicht auf den Randbereich einer Isolierglasscheibe gemäß einer weiteren Ausführungsform der Erfindung; und

Fig. 6

eine Querschnittsansicht auf den Randbereich einer Isolierglasscheibe gemäß einer weiteren Ausführungsform der Erfindung.

In the following the invention will be explained in more detail by means of exemplary embodiments with reference to the accompanying drawings. Show it:

Fig. 1

a cross-sectional view of the edge region of a claimed not invention claimed insulating glass pane, wherein the pressure in the space between the two outer panes is substantially identical to the external pressure;

Fig. 2

in the FIG. 1 illustrated embodiment under load of the space between the panes due to the climatic load;

Fig. 3

a cross-sectional view of an edge region of an insulating glass pane according to an embodiment of the invention;

Fig. 4

a cross-sectional view of the edge region of an insulating glass pane according to another embodiment of the invention;

Fig. 5

a cross-sectional view of the edge region of an insulating glass pane according to another embodiment of the invention; and

Fig. 6

a cross-sectional view of the edge region of an insulating glass pane according to another embodiment of the invention.

The insulating glass pane 1 shown in the drawings consists of at least two outer panes 2, 3 and an edge seal 4, which has a spacing profile 5. The spacer profile 5 consists of a high-strength plastic and has two opposite contact surfaces 12. Furthermore, the spacing profile 5 contains at least one recess 14. The two contact surfaces 12 are connected to the respective inner sides of the two outer disks 2, 3 in a shear-resistant manner. For this purpose, it is conceivable to provide an adhesive layer 11 which provides this shear-resistant composite between the spacer profile 5 and the outer panes 2, 3.

Increases the pressure in the space between the outer panes 2, 3, for example, due to heating by sunlight, twisting - as shown in particular in the representation FIG. 2 can be seen - the two previously arranged parallel to each other contact surfaces 12 of the spacer profile 5 to each other. This is possible because the spacer profile 5 has at least one articulated region 13 which is designed such that, under load due to the climatic loads, the two contact surfaces 12 are at least partially rotatable relative to one another, the axis of rotation corresponding to the longitudinal axis of the spacer profile 5. In the in the FIGS. 1 and 2 illustrated embodiment of the insulating glass pane 1, two articulated areas 13 are provided.

In the in the Figures 3 and 4 illustrated embodiment comes - in contrast to the in the FIGS. 1 and 2 illustrated embodiment - a spacer profile 5 is used, which consists of a first region 5a and a second region 5b. The two areas 5a, 5b are connected to each other in the assembled state shear-resistant. This is done via a bond 15 with a high-strength adhesive. In the in the Figures 3 and 4 In the embodiment shown, it is possible for the individual areas 5a, 5b to be first glued onto the outer panes 2, 3, the areas 5a, 5b then being connected to one another. This has the advantage that when gluing the areas 5a, 5b, first on the inner surfaces of the outer panes 2, 3, they are accessible from all sides and thus possibly exiting adhesive residues can still be removed.

In the in the Figures 3 and 4 illustrated embodiment, the two areas 5a, 5b with each other via a Bonding 15 bonded with a high strength adhesive. However, the areas 5a, 5b can also be mechanically connected to one another with the aid of screws, bolts and / or terminal strips. The shear strength of the areas 5a, 5b is achieved either only by the bond 15, but it can also be done by additional mechanical connecting parts 16. The depressions 14 present in the regions 5a, 5b can also be used for fastening holding elements.

In the case of a normal insulating glass pane, the space between the panes is deliberately hermetically sealed. The air or the gas in the space between the panes is kept as dry as possible by special desiccant 10. This is necessary so that when the temperature changes, especially when the outer pane cools to the outside, no condensation takes place on the inside. The spacing profile 5 can furthermore be designed such that one or more desiccants 10 are integrated in one or more cavities of the spacing profile 5. In a further embodiment, each of the desiccant 10 may also be accommodated in an additional desiccant profile 9. The desiccant 10 can be held in the desiccant profile 9 via adhesive dots 21. However, commercially available spacer profiles with desiccant 10 can also be installed. In a further embodiment ( FIG. 4 ) additional profiles 19 can be inserted between the areas 5a, 5b and the glass panes 2, 3 for optical reasons. This is the case when working with transparent adhesives and the outer disks 2, 3 in the region of the edge composite 4 have no printing. Here, then, the spacing profile 5 or the areas 5a, 5b are visible through the outer panes 2, 3.

• Zwischen dem Abstandsprofil 5, bzw. den Bereichen 5a, 5b, und den Außenscheiben 2, 3 wird ein zusätzliches flaches Profil 19 mittels eines transparenten Klebers 20 aufgeklebt. Das Profil 19 kann mit einer oder mehreren Umkantungen ausgeführt sein. Dadurch werden die Optik und die Handhabung des Profils 19 verbessert. Das Profil 19 kann aus verschiedenen Materialien hergestellt sein, oder es kann in allen erdenklichen Farben ausgeführt werden. Durch den transparenten Kleber 20 ist das Material bzw. dessen Farbe durch die Außenscheiben 2, 3 hindurch sichtbar. Der transparente Kleber 20 des zusätzlichen Profils 19 an den Außenscheiben 2, 3 kann als transparenter UV- oder zwei-komponentiger Kleber ausgeführt sein. Die Dicke des zusätzlichen Profils 19 wird in Abhängigkeit des verwendeten Materials so gewählt, dass die auftretenden Spannungen aufgrund von unterschiedlichen Wärmedehnungen möglichst gering sind und durch die Verklebung aufgenommen werden können.

For different applications, however, it would be desirable if the visible region of the edge bond 4 could also be made in different colors or structures. This is done as follows:

• Between the spacer profile 5, or the areas 5a, 5b, and the outer panes 2, 3, an additional flat profile 19 is glued by means of a transparent adhesive 20. The profile 19 can be executed with one or more folds be. As a result, the appearance and the handling of the profile 19 are improved. The profile 19 can be made of different materials or it can be made in any imaginable color. Through the transparent adhesive 20, the material or its color through the outer plates 2, 3 is visible. The transparent adhesive 20 of the additional profile 19 on the outer panes 2, 3 can be designed as a transparent UV or two-component adhesive. The thickness of the additional profile 19 is chosen as a function of the material used so that the stresses occurring due to different thermal expansion are as small as possible and can be absorbed by the bond.

Another embodiment shows FIG. 5 , Here, an insulating glass pane 1a with a total of two outer panes 2, 3 and a single pane 22, which is arranged between the outer panes 2, 3, executed. Due to the resulting thicker glass structure, the rigidity of the insulating glass pane is significantly increased again. Next, such a glass structure with two spaces also has thermal advantages. In further embodiments, the areas 5a, 5b can be carried out with additional webs, which on the one hand increase the rigidity of the insulating glass pane and can also be used as a structural element.

Another embodiment shows FIG. 6 , An insulating glass pane 1b has two outer panes 2, 3, wherein in one of the two outer panes 2, 3 limited space at least one further disc or a film 22, 32, for forming a first and second space between the panes 30, 31 is arranged. The further disc or film 22, 32 is at least partially flexible. A spacing profile 5, which is arranged between the two outer panes 2, 3, has a first region 26 and a second region 27, which are connected to one another in regions in a shear-resistant manner or connected. The first region 26 and the second region 27 of the spacer profile 5 are each designed as spacer profile elements with an L-shaped cross-sectional geometry. Each of the spacer profile elements has two legs 26a, 26b; 27a, 27b. In the connection region of the two legs 26a, 26b; 27a, 27b of each Distance profile element is formed in each case a hinged region 13. A first leg 26a, 27a of each region 26, 27 runs parallel to one of the two outer disks 2, 3 and is connected to the outer disk 2, 3 in a shear-resistant manner. A second leg 26b of the one region 26 runs parallel to a second leg 27b of the other region 27 and is connected thereto at least in one region 28. A pressure compensation is provided at least for one of the two disc spaces 30, 31, wherein at least one pressure equalization tube 29, in particular capillary tube is provided, and / or wherein at least one membrane, in particular an air but not water-permeable membrane, is provided in a channel 29 to For purposes of pressure equalization a disc space connects with the outside atmosphere. Furthermore, one or more desiccants 10 may be integrated in one or more cavities in the interpane spaces 30, 31 and held over adhesive dots 25. Furthermore, the desiccant 10 can also be kept in a desiccant profile 9.

The invention is not limited to the exemplary embodiments and can be carried out within the scope of the claims in further embodiments. It should also be noted that the pressure equalization also in the embodiment of FIG. 5 can be used or in an insulating glass pane, which has two outer plates 2, 3 and at least one disc or foil.

Claims (17)

1. Insulating glass unit (1) consisting of at least two outer panes (2, 3) and an edge connection (4), which has a spacer profile (5) made of plastic with two opposed contact faces (12) which are of approximately uniform thickness, are parallel to one another and are connected in a shear-resistant manner to the outer panes (2, 3) via an adhesive layer (11),
   wherein the plastic of the spacer profile (5) is a high-strength plastic;
   and wherein the spacer profile (5) has a first region (5a, 26) and a second region (5b, 27),
   which are connected to one another in a shear-resistant manner,
   wherein the shear-resistant connection includes that the first region (5a, 26) and the second region (5b, 27) are adhesively bonded to one another by way of an adhesive bond (15, 28) with a high-strength adhesive,
   wherein the spacer profile has a recess in each case in the first region (5a, 26) and in the second region (5b, 27);
   characterized
   in that the spacer profile has two articulated regions (13), which are designed in such a manner that the two contact faces (12) can be at least partially twisted, in order to thus reduce stresses in the adhesive layer (11), and in that the articulated regions (13) are designed in the form of constrictions by the two recesses (14).
2. Insulating glass unit (1) according to Claim 1,
   wherein the first region (5a, 26) and the second region (5b, 27) are connected to one another with the aid of at least one mechanical connecting part (16), in particular are connected to one another in a positive-locking manner.
3. Insulating glass unit (1) according to Claim 2,
   wherein the at least one mechanical connecting part (16) has a screw, a pin and/or a clamping strip.
4. Insulating glass unit (1) consisting of at least two outer panes (2, 3) and an edge connection (4), which has a spacer profile (5) made of plastic with two opposed contact faces (12) which are of approximately uniform thickness, are parallel to one another and are connected in a shear-resistant manner to the outer panes (2, 3) via an adhesive layer (11),
   wherein the plastic of the spacer profile (5) is a high-strength plastic;
   wherein the spacer profile (5) furthermore has at least one articulated region (13), which is designed in such a manner that the two contact faces (12) can be at least partially twisted, in order to thus reduce stresses in the adhesive layer (11),
   wherein the spacer profile (5) has a first region (5a, 26) and a second region (5b, 27), which are or can be connected to one another in a shear-resistant manner,
   characterized
   in that the first region (26) and the second region (27) are each designed as profiled spacer elements with an L-shaped cross-sectional geometry,
   and in that each of the profiled spacer elements has two legs (26a, 26b; 27a, 27b),
   and in that an articulated region (13) is in each case formed in a connecting region of the two legs (26a, 26b; 27a, 27b) of each profiled spacer element.
5. Insulating glass unit (1) according to Claim 4,
   wherein a first leg (26a, 27a) of each region (26, 27) runs parallel to one of the two outer panes (2, 3) and is connected in a shear-resistant manner to the outer pane (2, 3).
6. Insulating glass unit (1) according to either of Claims 4 and 5,
   wherein a second leg (26b) of one region (26) runs parallel to a second leg (27b) of the other region (27) and is connected thereto at least in certain regions.
7. Insulating glass unit (1) according to one of the preceding claims,
   wherein at least one further pane or a sheet (22, 32) is arranged in an interspace delimited by the two outer panes (2, 3) for forming a first and second pane gap (30, 31).
8. Insulating glass unit (1) according to Claim 7,
   wherein the further pane or sheet (22, 32) is designed to be flexible at least in certain regions.
9. Insulating glass unit (1) according to Claim 7 or 8,
   wherein a pressure-equalizing means is provided for at least one of the two pane gaps (30, 31).
10. Insulating glass unit (1) according to Claim 9,
    wherein at least one pressure-equalizing tube (29), in particular a capillary tube, is provided, and connects a pane gap (30, 31) to the external atmosphere for the purpose of pressure equalization.
11. Insulating glass unit (1) according to Claim 9 or 10,
    wherein at least one membrane, in particular an air-permeable but not water-permeable membrane, is provided in a duct (29), and connects a pane gap (30, 31) to the external atmosphere for the purpose of pressure equalization.
12. Insulating glass unit (1) according to one of the preceding claims,
    wherein the contact faces (12) of the spacer profile (5) are adhesively bonded to the outer panes (2, 3) with a shear-resistant two-component adhesive.
13. Insulating glass unit (1) according to one of Claims 1 to 11,
    wherein the contact faces (12) of the spacer profile (5) are adhesively bonded to the outer panes (2, 3) with a shear-resistant ionoplast polymer.
14. Insulating glass unit (1) according to one of the preceding claims,
    wherein the spacer profile (5) is made of a high-strength, glass-fibre-reinforced plastic.
15. Insulating glass unit (1) according to one of the preceding claims,
    wherein the axis of rotation of the articulated region (13) runs parallel to the longitudinal axis of the spacer profile (5).
16. Insulating glass unit (1) according to one of the preceding claims,
    wherein provision is furthermore made of a desiccant (10), which is arranged in a hollow space in the interior of the spacer profile (5) or adjoining the spacer profile (5).
17. Insulating glass unit (1) according to one of the preceding claims,
    wherein an additional profile (19) is fastened, as an interlayer between the contact faces (12) of the spacer profile (5) and the outer panes (2, 3), to at least one of the two outer panes (2, 3) with the aid of a transparent adhesive (20) or a transparent film.

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