DE102007063599A1 - Isolierscheibenelement with a curved disc - Google Patents

Abstract

In an insulating disk element (1) with at least one arched rigid disk (2), another rigid disk (3) and a spacer frame (4) which tightly adhesively connects the two disks with the inclusion of a disk space, which in the region of the connection between the rigid arched Disc (2) and the other rigid disc has seen over its longitudinal extent variable cross-section, the spacer frame (4) according to the invention at least in said region of a by pressing together the two rigid discs (2, 3) plastically deformed elastomeric material.

Description

The The invention relates to a Isolierscheibenelement with a vaulted disc with the characteristics of the generic term of the Patent claim 1.

Under an insulating disk element in the sense of this description is a from at least two rigid discs and one of these two discs interconnected spacer frame formed surface element Understood. The spacer frame is made using thin adhesive layers connected to the disc inner surfaces. The two each other facing major surfaces of the rigid discs and the spacer frame enclose a disc space, which is usually air and moisture proof is completed. Under "rigid" Here is the relative stiffness of glass and plastic discs understood in comparison to softer materials.

For the purposes of the invention to be described here are rigid disks made of glass and plastic in question, both in monolithic and also in composite design (at least two rigid, with an adhesive layer or film surface-adhesive connected disks). Furthermore, both prestressed, semi-tempered and unbiased glass panes be used.

EP 0 921 260 B1 discloses such insulating with a flat and a cylindrically curved rigid disc. In the area of the relatively high curvature of the designed as a hollow profile spacer frame of this disc member is equipped with a projecting ridge, which has to fill the crescent-shaped gap between the straight continuous hollow profile and the curved disc. Such a special construction of a spacer is relatively expensive and therefore expensive.

Out EP 1 657 396 A2 is a Isolierscheibenelement with a cylindrically curved disc known whose spacers in the said bulge of a solid profile section, z. B. made of glass.

Hollow profile spacer are usually filled with a desiccant that the Space between the panes within certain limits any residual moisture and subsequently removes moisture that penetrates. In order to the fogging of the panes is permanently prevented from the inside, as long as there is no external damage (eg Removal of the bond between spacer frame and Slices).

Also DE 203 04 806 U1 describes inter alia Isolierscheibenelemente with cylindrically curved rigid discs, where there may have different curvature radii the two discs. However, the document is silent about the execution of the spacer frame in this bulge area.

It is well known, spacer frame for Isolierscheibenelemente from an extrudable elastomeric, possibly thermoplastic material manufacture. This serves above all the purpose, the heat transfer by heat conduction in the edge region of the insulating to minimize ("warm edge" insulating discs). Such elastomeric However, spacers require further measures, so that their impermeability to water vapor diffusion with the values of metallic Spacer can keep up. The elastomeric material alone is not enough for this. Therefore most elastomers include Spacer frame additionally metallic inserts, are externally metallized or with a thin one Foil occupied. It is also known to use these materials with drying agents against moisture in the space between the panes.

EP 0 875 654 A1 describes a hollow profile spacer made of elastomeric material whose mechanical resistance is increased by embedded glass fibers.

EP 1 195 497 A2 describes the preparation of a Isolierscheibenelements with an elastomeric and after the application (extrusion) on one of the rigid disks still plastically deformable spacer frame. So that the displaced by placing the second disc by compressing the spacer frame air can escape without having to provide the spacer frame initially with a gap, according to this description, the spacer frame on one side more compressed than actually required, while the disc on the opposite lying side is not created yet. Then, the disc is placed on this opposite side of the spacer frame, and the latter is compressed to its desired strength. In this case, even before closing the last gap, the trapped air is gradually displaced. As a last step, the initially more compressed side of the spacer frame is then pulled to the "desired thickness". However, the document does not deal with the use of domed disks in such an insulating member.

Out DE 30 02 904 A1 and under the trade name "swiggle strip" is also an elastomeric material with a flexible metal insert, for example, for spacer frame of Isolierschei benelementen known.This material is suitable after the information of the Internet address http: //www.bentglassde sign.com/glasstvpes.html (as of January 2007) also for connecting two corotating rigid disks to an insulating glass element. In the case of the arched disc element shown there, however, the distance between the panes is the same everywhere in the arch area.

Of the Invention is based on the object, another insulating disk element with at least one domed disc and a spacer frame indicate, in the area of the disc curvature, an in its longitudinal extent seen variable Cross section has.

These Task is according to the invention with the features of claim 1. The features of the subclaims indicate advantageous developments of this invention.

outgoing from the known Isolierscheibenelementen with curved rigid discs is according to the invention, the curvature of the spacer frame by pressing the arched disc forced plastic deformation of the spacer frame material reached. It can be seen on the finished product because the spacer frame has local thickening by displaced material, the course in the area of the largest Deformations are thicker than in the area of the largest Arc height. Outside the window space If necessary, such thickenings can be removed / removed. Apart from that, they can be attached by attaching an external or secondary seal (polysulfide termination) in itself be laminated in a known manner.

This in DE 30 02 904 A1 described material is suitable, if necessary, according to certain modifications described below, for this application according to the invention. Of course, other similar materials can be used to compensate for the camber differences as long as they have the required plastic deformability. It does not necessarily have to be a thermoplastic material, which is first heated to deform or which can only be deformed after application in the still warm state. Permanently plastically deformable materials at room temperature are basically also suitable, provided that they have the strength values required for the insulating composite and sufficient adhesion to the surfaces of the rigid panes.

Although the preferred embodiment, the combination of a curved and a flat disc, but according to the invention can also two different vaulted te slices using the compensatory ability of the elastomeric spacer in the region of different Vaults are interconnected.

Naturally the invention can not only cylindrically curved Slices, but also spatially up to their edges curved discs are used, so where more as two arched side edges with the spacer towards connect. In this case, the deformability of the material the spacer frame used on each arched edge, at the different curvatures or vaults between the pairs of discs are to be compensated.

It may be useful in carrying out the present invention be, on edges without curvature and on edges in the bulge area different base heights of the spacer frame to use, d. H. for example, four sections in total (two different section pairs). In the area the vault becomes a wider version use with the required compression volume, in the range without curvature, the profile can be narrower. That has the advantage, that the material on the longitudinal edges is not so strong has to compress. You would be bigger with it Can realize heights.

adversely would be in this embodiment, however, that in There is a seam or joint at each corner, which is specially sealed must become.

In it would also be possible the sections of the spacer frame in which no buckle compensation is required, from a conventional material to to produce the usual metallic spacer frame. It would even be conceivable, the entire spacer frame to produce conventional metal profiles and this only in the buckling area with an overlay of a plastically deformable and to compensate to provide the buckle capable material. Herewith is not the compensation of slight unevenness of a disc meant (of course also with the normal adhesive materials between spacer frame and disc surface in low Dimensions is possible), but only a compensation of curvature differences with bow heights in the millimeter range.

Further You can see the invention depending on the height of the curvature with bulging or flat discs, which the curvature only when compressing the spacer frame imposed in the context of their elastic deformability. A Such "cold bending" can be done with the help of strong adhesion of the spacer frame in the finished product, provided the material of the spacer frame a sufficient dimensional stability and Has long-term creep resistance.

Finally, in such an insulating disk element in a conventional manner also electrical and / or electronic functional elements are installed or integrated. These can be located both in the space between the panes as well as within a composite disk used as a rigid disk, if you can not or do not want to arrange them on one of the outer surfaces. Here come z. B. functional elements such as electrochromic or electroluminescent sheet, lights, displays, solar cells, sensors and indicators, heating elements and / or antennas in question. Also non-electrical elements such. As thermochromic or photochromic surface elements, and of course transparent and / or opaque coatings, in particular thermal insulation and / or light and / or color filters can be combined with Isolierscheibenelementen invention.

Isolierscheibenelemente The design described here are suitable for a wide variety of Inserts in vehicles as well as in buildings. For example can such Isolierscheibenelemente in vehicle glazing -z. B. in buses, and there preferably in the Area of transition from the side glazing to the roof. The arched disc is then on the outside and is fitted in the outer contour. The plane or otherwise domed inner pane can then with additional Functional elements, for example with surface lights or other optional equipment.

Further Details and advantages of the subject invention go out the drawing of an embodiment and its in the following subsequent detailed description.

It show in a simplified, not to scale representation

1 a view of an inventively designed Isolierscheibenelement;

2 a sectional view of the same Isolierscheibenelements along in in 1 indicated cutting course II-II;

3 two views of sections of the spacer frame according to the Isolierscheibenelement 1 and 2 ;

4 an exploded view of a Isolierscheibenelements invention before placing the curved rigid disk on the prepared spacer frame.

In 1 you can see the layout of a Isolierscheibenelements 1 with arched rigid disc lying on top 2 and an underlying flat rigid disk 3 , This stands in the embodiment discussed here on a longitudinal edge a few inches above the outline of the curved disc 2 before, so that a step-Isolierscheibenelement is formed.

Below the upper disc 2 is the outline of a spacer frame 4 indicated, which extends circumferentially over the entire circumference of the Isolierscheibenelements 1 extends and together with the inside major surfaces of the two rigid discs 2 and 3 circumscribes an air- and moisture-proof inter-pane space.

With 5 is the inner edge of a per se opaque color layer referred to, the frame-like on the inner surface of one or both rigid discs 2 / 3 is applied and the actual field of view of the otherwise transparent insulating disk element circumscribes. This ink layer serves on the one hand -in a conventional manner- for optical lamination of the elastomeric spacer frame 4 as well as its adhesive bonds with the two rigid discs, on the other hand to protect the elastomeric material and the adhesive layers or strands from UV radiation and against long-term associated embrittlement / adhesive loss.

The opaque color layer is not shown here opaque to the visibility of the spacer frame. It can also be on the one side projecting edge of the disc 3 expand.

The curvature of the disc 2 is in 1 not visible because it rises contrary to the viewing direction, ie out of the plane of the drawing.

A view of the section along the line II-II in 1 , as in 2 illustrates the shape and configuration of the spacer frame 4 in the camber area. In the remaining area of the disc element circumference, where the disc edges lie parallel to each other (longitudinal edges), the spacer frame is simply straight and designed with a constant cross section. He may also there, as already mentioned, be carried out with conventional metal profile frame sections.

It It should be noted that the bow height above the chord in the camber area (here along the short side edges the insulating disk element) depending on the length the tendon may be in the range of a few millimeters (between> 0 and about 6 mm). As an example, consider a chord length of about 300 mm a radius of curvature of about 2000 mm with 4 mm glass thickness called. This results in a maximum arc height over the tendon of about 5.5 mm.

In 2 On the one hand, one recognizes that the spacer frame 4 by means of an in 1 invisible embedded metallic insert 4M is stiffened. This insert 4M has a consistent cross-section. The raw material for the spacer frame 4 is produced as extruded profile endlessly (for example, coextruded) and cut to length as required. It is not particularly difficult to seal seams between profile sections sufficiently well, because the material is very good plastically deformable, and also good adhesion. has common fillers, sealants and adhesives.

Apart from that, the corner areas, which in this illustration can be on both sides of the visible section of the spacer frame 4 can be readily generated by bending the material. As compared with 1 can be seen, close to these corner regions, the straight frame sections of the longitudinal sides of the Isolierscheibenelements, in which the cross section is fixed.

Visible is in 2 too, that the spacer frame 4 opposite the outer edges of the two discs 2 and 3 circumferentially slightly retracted inward. In the remaining circumferential groove, a secondary seal made of polysulfide, not shown here, is filled in a manner known per se after completion of the bonding between the spacer frame and rigid disks, which preferably completely fills the groove.

It finally recognizes that the metallic insert 4M in the embodiment shown here, slightly off-center with respect to the longitudinal extent of the spacer frame 4 lies.

In 3 the latter is shown slightly larger by means of a view and a cross-section folded to the right. Although this measure is not absolutely necessary for the production of a Isolierscheibenelement invention, but you can also work with the conventional symmetrical profiles, if the side of the insert sufficiently displaceable elastomeric material is present.

The basic design of this spacer frame is from the aforementioned DE 30 02 904 A1 known. It has been here created a further modification to the effect that the metallic insert 4M is open to one side, or in other words, embedded in a one-sided open channel in the elastomeric material. The opening of the channel is in the installed state outside, so facing away from the space between the panes, and is not visible to the viewer. On the side facing the disc space of the spacer frame provides a closed, uniform surface image.

The compression of the spacer frame 4 from the original state (as in 3 shown) and between the domed disc 2 and the plane disk 3 shaped state with longitudinally variable cross-section (in 3 indicated by a dashed curved line in strong foreshortening of the possible arc) takes place in the direction of the transverse extent of the in itself flat, but to facilitate deformations (bends) slightly wavy metallic insert 4M , Therefore, their width everywhere must be less than the minimum distance between the two rigid discs 2 / 3 so that the metal does not come into contact with the disc surfaces.

The one-sided opening of the metallic insert channel formed in the elastomeric material of the spacer frame 4M facilitates the displacement of the elastomeric material required for the cross-sectional change. This differs in the compressed state on the one hand to the side (the spacer frame is there so a little thicker), but can also be displaced into the first opened channel and close this partially or completely. If necessary, one will deform the elastomeric material of the spacer frame either in the still warm state after hot application, or heat it to this deformation process, unless it is anyway sufficiently plastically deformable at the usual processing temperatures (room temperature).

4 shows an exploded view of a wire model of the items an example of a compilation of a Isolierscheibenelement invention 1 before placing the curved disc 2 , This has her arched basic shape here before hanging up. It is also with a real opaque, but here analogous to 1 only by its internal boundary 5 indicated color layer frame equipped. On the flat disc 3 are arranged along the outer edges and with slight offset inwardly four sections of a spacer profile, two sections each 4.1 and 4.2 , You can see well that the sections 4.2 attached to the curved edges of the disc 2 be higher than the sections 4.1 along the straight longitudinal edges of the insulating disk element 1 , Dashed is in the sections 4.2 one line each 4A indicated that reflects the arc of the curved disc edges, and thus the contour that these sections 4.2 after laying and pressing the curved disc accept.

The in 2 shown and in 4 Indicated shaping condition of the domed disk 2 You can reach in different ways. As a rule, one becomes a previously cylindrically curved disk 2 on the flat disc 3 already put on the spacer frame and by pressing, possibly in several steps, the (longitudinal) edges of the flat disc 3 approach, until the highest arc of the curvature of the disc 2 also safe with the spacer frame 4 is adhesively connected. In this apex area, too, one will therefore bring about at least a slight compression deformation of the elastomer material for safety's sake. A previously arched disc 2 is not necessarily even further deformed in this process, except possibly in the area of elastic deflection, where here, if necessary, a flat support of the overall arc to avoid breakage would be possible.

But you can also the arched disc 2 deform in the range of their elastic deformability cold by a similar pressing process from an originally flat shape, if the disc material is not too thick. If one only loads the (longitudinal) edges with such a starting shape, the counter force will inevitably result in the spacer frame to be deformed 4 set a disc curvature. A defined measure of the bow height can be achieved additionally by a central support in the bulge area (effective between the insides of the two rigid discs in the area of the circumferential outer channel) or by a bending template temporarily inserted between the two rigid discs parallel to the spacer frame to be deformed.

Of course Combinations of both methods are also possible. For example can be an initially only slightly bulging disc elastic during the pressing process in their final Bending form be brought. This has the advantage that on the Adhesive connected spacer frame not quite so high spring forces act like one out the flat state cold bent disc.

To the final curing, setting etc. of the adhesive bonds between the spacer frame and the rigid discs as well as solidification of the elastomer material itself becomes the elastically curved Disc then without further action in the desired Kept shape. Such an approach is in itself of domed composite discs known.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 0921260 B1 [0004]
• - EP 1657396 A2 [0005]
• - DE 20304806 U1 [0007]
• EP 0875654 A1 [0009]
• - EP 1195497 A2 [0010]
• - DE 3002904 A1 [0011, 0015, 0042]

Claims (14)

Insulating disk element ( 1 ) with at least one curved rigid disk ( 2 ), another rigid disc ( 3 ) and one the two discs, including a disc space with each other tightly adhesive spacer spacer frame ( 4 ), which in the area of the connection between the rigid arched disc ( 2 ) and the other rigid disc one seen over its longitudinal extent in the direction of the curvature of the disc ( 2 ) has variable cross-section, characterized in that the spacer frame ( 4 ) at least in the said bulge region from a mutual pressing of the curved disc ( 2 ) and the other disc ( 3 ) plastically deformed elastomeric material and that the Isolierscheibenelement contains an electrical functional element, in particular a surface lamp, a solar cell or a display. Insulating disc element according to claim 1, characterized in that that the electrical functional element is within the space between the panes located. Isolierscheibenelement according to claim 1 or 2, characterized characterized in that the electrical functional element in the composite pane is embedded between the rigid disks. Isolierscheibenelement according to claim 1, characterized in that in the spacer frame ( 4 ) a metallic insert ( 4M ) is embedded with constant width. Isolierscheibenelement according to claim 1 or 4, characterized in that the spacer frame ( 4 ) is made of a continuous profile strand with originally constant cross-section and with only one seam. Isolierscheibenelement according to claim 1 or 4, characterized in that the spacer frame ( 4 ) is made of several sections, wherein the portions arranged in the bulge area ( 4.2 ) has a larger initial width than the sections not arranged in the arching region ( 4.1 ) exhibit. Isolierscheibenelement according to any one of the preceding claims, characterized in that it has a curved disc ( 2 ) and a flat disc ( 3 ) or two differently curved discs, in the latter case the elastomeric spacer frame ( 4 ) compensates the differences in curvature by plastic deformation. Isolierscheibenelement according to any one of the preceding claims, characterized in that the variable cross-section of the spacer frame ( 4 ) is produced in the bulge area by pressing and displacing the elastomeric material. Isolierscheibenelement according to any one of the preceding claims, characterized in that the curved disc ( 2 ) before pressing on the spacer frame ( 4 ) is curved, and / or that the curved disc ( 2 ) by pressing on the spacer frame ( 4 ) is arched in its final form. Insulating disc element according to one of the preceding claims, characterized in that the rigid discs ( 2 . 3 ) consist of glass or plastic. Isolierscheibenelement according to claim 8, characterized in that a rigid disc ( 2 . 3 ) is glass tempered or partially tempered or not tempered glass. Insulating disc element according to one of the preceding claims, characterized in that at least one rigid disc ( 2 . 3 ) is a composite disk of two surface-adhesively bonded rigid glass and / or Kusentstoff discs. Isolierscheibenelement according to one of the preceding Claims, characterized in that it is a transparent Field of view has, and / or that in the disc surface mounting elements are provided. Isolierscheibenelement according to any one of the preceding claims, characterized in that a secondary seal, in particular of polysulfide, the entire spacer frame ( 4 ) surrounds the outside.