EP3907363A1 - Fastening device for a laminated safety glass pane and method for mounting a fastening in conjunction with a laminated safety glass pane - Google Patents

Abstract

The invention relates to a fastening device in a one-part or multi-part metal, stainless steel or plastic design for connection to at least one laminated safety glass pane, the structure of which consists of at least two or more flat glass panes, the glass panes being permanently connected to one another by PVB films or an equivalent material , the laminated safety glass pane being overlapped on both sides in a contact area by the fastening device or fittings and at the same time secured by means of fastening screws (6) which engage through holes or glass cutouts (4, 5) contained in the laminated safety glass pane. In the contact area of the fastening device or the fitting parts, there can be at least one additional external access (14) to the bores (8) or glass cutouts (4, 5) through which a chemical injection build-up mass into at least one of the bores (8) or glass cutouts (4 , 5) can be brought in. After a reaction time, the injection build-up mass becomes a pressure-resistant build-up mass as a spacer element with a material bond to the surrounding materials. If the glass breaks, an increased residual load-bearing capacity is achieved. The invention also relates to a method for creating spacer elements between a fastening device by means of hardened injection build-up compounds in conjunction with laminated safety glass notes.

Description

The invention relates to a fastening device in a one-part or multi-part metal, stainless steel or plastic design for connection to at least one laminated safety glass pane, the structure of which consists of at least two or more flat glass panes that are permanently connected to one another by PVB films or equivalent. The invention also relates to a method for the permanent attachment of fittings or fitting parts to safety glass panes. It is also a safety glass pane, consisting of at least two flat glass panes connected to one another by a PVB film or equivalent, with fittings or fittings that can be arranged on the opposite glass surfaces and in the fastening area of which there are bores or glass cutouts. The invention also encompasses the formation of at least one pressure-resistant spacer element that is independent of the thickness tolerance of safety glass panes in at least one recess or at least one recess structure in laminated safety glass panes whose surfaces come into contact with attached fittings or fittings.

In the DE 199 01 513 A1 a fitting for a frameless glass element is described in which a fastening device is provided so that the glass element is immovably connected to the fitting. The glass element is designed as safety glass, in which two Flat glass panes are connected to one another by an elastic film.

the EP 3 029 239 A1 discloses a corner fitting for a door element made of laminated safety glass, which can be arranged on a pivot point and / or an axis, and consists of two fitting parts, each of which has a contact section at least in certain areas. Furthermore, there is a channel system in order to introduce an adhesive medium from the outside into the clamping area, as a result of which a material connection between the door element and part of the fitting parts is achieved.

Laminated safety glass consists of at least two flat glass panes that are permanently connected to one another with an elastic, tear-resistant high polymer film. These high-polymer films, with the abbreviation PVB, ensure that the individual flat glass panes connected to one another stick to the film if the glass panes break. As a result, a residual load-bearing capacity is achieved overall in order to avoid cuts or stab injuries from broken glass panes. Such a safety glass pane can be referred to as a splinter-binding glass, because the glass breaks in the face of external mechanical overload, but the fragments stick to the PVB film.

When connecting such laminated safety glass panes by fastening devices or fittings or fitting parts that rest on the surfaces of the laminated safety glass panes and are connected to one another by screw connections, the film will shrink to a certain extent over the course of the operating time, which means that those with the original fastening torque are mutually exclusive pulled fasteners or the like can loosen. This is due to the fact that the pressure loads on the surfaces of the glass panes deform the PVB film or, in connection with large temperature fluctuations, this loosening of the hardware parts can occur. This is a safety criterion, which leads to the fact that the laminated safety glass panes do not break, but depending on the design of the fastening devices or the like, undesired loose positions can occur.

It is therefore the object of the invention to eliminate these problems and to ensure a permanent connection between a fitting or fitting parts and at least one laminated safety glass pane.

The object is achieved by the features of claims 1, 8 and 10. The subclaims that follow each of the independent claims reproduce a further embodiment of the inventive concept.

In order to permanently secure the contact area of the fastening device or the like in the area of the stop in the case of laminated safety glass panes against loosening and thus to increase the residual load-bearing capacity for reasons of safety in the event of glass breakage, at least one of the holes or the glass cutouts of the laminated safety glass panes is inserted between the pre-assembled and with an initial torque fixed fitting devices or the like, a curable, chemical injection build-up material introduced. After a reaction time of the chemical injection build-up material designed as a single or multiple component, a pressure-resistant spacer element is created between the fastening device or the like from the injection build-up mass. Due to the initially executed initial torque, which is below the fastening torque, the dimension for the spacer element created by the chemical injection build-up material is created between the opposing fitting device or the like. After the chemical injection build-up material has hardened, the spacer element thus forms a permanently existing spacer element against the fastening pressure of the fitting device or the like. Only after the applied chemical injection build-up has hardened is the fastening torque required for fastening the fastening device or the like exerted via the fastening screws. Retightening the fastening screws with the required fastening torque ensures that the fastening device or the like on the laminated safety glass pane cannot permanently change. At the same time, the hardened construction mass not only forms a spacer element, but also secures the laminated safety glass pane as a whole against subsequent changes in the fastening area.

The chemical injection build-up mass is introduced from the outside through at least one external access in the fastening device or the like both in the area of the bores and the glass cutouts and other recess structures of the fittings or the like located in between and can then be distributed in the openings in the laminated safety glass pane. In addition to the screw connection, this creates a further fastening, namely by means of a material bond. The substance is the chemical injection build-up which is distributed within the free spaces between the laminated safety glass pane and the fastening devices or the like. By introducing the chemical injection build-up mass in this way, no additional exertion of force, for example in the form of spreading forces, is to be expected on the laminated safety glass pane.

Such a connection of fastening devices or the like with laminated safety glass panes of the aforementioned type can be carried out in all possible designs of fastening devices or the like which are attached to the opposite surfaces of the safety glass pane. These include, in particular, both revolving door fittings and, in principle, door leaves or overhead glazing in addition to protruding or hanging side glazing.

All fastening devices or fittings that are used can be made in one or more parts in metal, stainless steel or plastic, also in a plastic bandage.

Figur 1

Ein Drehtürbeschlag zur Verbindung an einem Türelement;

Figur 2

wie Figur 1, jedoch mit aufgesetztem Drehtürbeschlag;

Figur 3

eine Schnittdarstellung durch den Bereich des aufgesetzten Drehtürbeschlages;

Figur 4

eine Ausführungsform einer Befestigungsvorrichtung durch Beschläge in Verbindung mit einem feststehenden Seitenteil;

Figur 5

eine mögliche Ausführungsform von innerhalb der Verbundsicherheitsglasscheiben vorhandenen Glasausschnitten und Bohrungen;

Figur 6

wie Figur 5, jedoch mit aufgesetzten Beschlagteilen;

Figur 7

wie Figur 6, jedoch von der Rückseite betrachtet;

Figur 8

die Darstellung der chemischen Injektionsaufbaumasse zwischen zwei Verbundsicherheitsglasscheiben.

The use of such a cohesive build-up composition, which is pressure-resistant after curing, as a spacer element is explained in more detail in the following exemplary embodiments, which are shown schematically.

Figure 1

A revolving door fitting for connection to a door element;

Figure 2

how Figure 1 , but with attached revolving door fitting;

Figure 3

a sectional view through the area of the attached revolving door fitting;

Figure 4

an embodiment of a fastening device by fittings in connection with a fixed side part;

Figure 5

a possible embodiment of existing glass cutouts and holes within the laminated safety glass panes;

Figure 6

how Figure 5 , but with attached fittings;

Figure 7

how Figure 6 but viewed from the rear;

Figure 8

the representation of the chemical injection build-up between two laminated safety glass panes.

In the embodiment of Figures 1 to 3 a revolving door fitting 1 with a door leaf 2, which consists of a laminated safety glass, is shown in certain areas. In the exemplary embodiment, the door leaf 2 consists of two flat glass panes, not designated in any more detail, which have been permanently connected to one another in a manufacturing process with a PVB film 3. Glass cutouts 4 are shown in the door leaf 2 in order to permanently connect the revolving door fitting 1 to the door leaf 2 via fastening screws 6.

In the Figure 2 the revolving door fitting 1 is shown in its assembly position with the door leaf 2. The fastening screws 6 are not yet shown here in this illustration. During the pre-assembly of the revolving door fitting 1, the fastening screws are only tightened with a lower torque than in the practical version. However, a chemical injection build-up compound can also be introduced into all free spaces between the revolving door fitting 1 with pinpoint accuracy by means of a nozzle 7, for example via the bores 8 or via lateral accesses 14. This procedure shows in a schematic representation the Figure 3 , whereby the gray area in the drawings was filled with the chemical injection build-up mass via the nozzle 7. After the chemical build-up material has hardened, a material bond can be achieved both with the laminated safety glass pane and with the fittings. The hinged door fitting 1 is carried out using the fastening screws 6 with the necessary torque in use.

The embodiment of the Figure 4 shows in addition to the door leaf 2 also a side part 10 and a skylight 9, these parts all consist of laminated safety glass panes. A glass fitting 11 has been shown above the revolving door fitting 1, which is closed by side covers 12 in this state. Under the covers 12 are on each side of both the side part 10 and the skylight 9, each fastening parts of the glass fitting 11, what the Figures 6 and 7th can be taken. These two fastening parts on the surfaces of the side part 10 designed as laminated safety glass and the skylight 9 can be connected to one another by fastening screws 13.

In order to be able to carry out a ready-to-use connection, it is necessary that corresponding bores or glass cutouts 4, 5 must be present both in the side part 10 and in the skylight 9. The opposing fastening of the fitting parts of the glass fitting 11 by means of the screws 13 can be implemented via the glass cutouts 4. At least one access 14 can be present in at least one of the two parts of the fitting 11. In the case of a pre-assembly with a precise alignment and fixing of the individual laminated safety glass panes of the skylight 9 and the side part 10, the glass fitting parts 11 can be fixed with an initial torque via the fastening screws 13. The chemical injection build-up mass can then be introduced via the at least one access point 14. As a result, there is a material bond between the safety glass and the fitting parts after the chemical injection build-up mass has solidified. At the same time, this also creates a pressure-resistant spacer element from the body mass. This can Figure 8 The area of the applied chemical injection build-up mass corresponds to the gray area in the glass cutouts 4 and 5.

After the reaction time of the chemical injection compound, which can consist of two components, there is a permanently pressure-loadable spacer element between the attached fitting parts, through which in particular any thickness tolerances of the laminated safety glass panes can be compensated, so that between the fitting parts 9 and 10 resting on the surfaces of the laminated safety glass panes 11 no overstressing can arise after installation. At the same time, the hardened chemical injection build-up mass In the filled areas of the laminated safety glass pane, an additional residual load-bearing capacity is achieved in the event of a breakage of the laminated safety pane.

In addition to the bores or glass cutouts 4, 5 necessary for attaching the fastening devices or fittings, further additional bores or glass cutouts can also be provided under the fittings for manufacturing reasons, in order to be able to fill them up with the chemical injection build-up mass. This makes it possible to create additional spacer elements that can be pressurized from the outside. These spacer elements can permanently and effectively counteract shrinkage of the PVB film and thus ensure a secure fit of the fitting devices or the like in connection with laminated safety glass panes at all times.

Reference number

1

Revolving door fitting

2

Door leaf

3

PVB film

4th

Glass cutout

5

Glass cutout

6th

Fastening screws

7th

jet

8th

Drilling

9

Skylight

10

Side part

11

Glass fitting

12th

cover

13th

Fastening screws

14th

access

Claims (10)

Fastening device in a one-piece or multi-part metal, stainless steel or plastic design, for connection to at least one laminated safety glass pane, the structure of which consists of at least two or more flat glass panes, the glass panes being permanently connected to one another by PVB films or an equivalent material, these Laminated safety glass pane is overlapped on both sides in a contact area by the fastening device or fittings and at the same time secured by means of fastening screws (6, 13) which engage through holes or glass cutouts (4, 5) contained in the laminated safety glass pane, characterized in that in the contact area of the fastening device or the Fitting parts there is at least one external additional access (14) to the bores or glass cutouts (4, 5) through which a chemical injection build-up mass is introduced into at least one of the bores or glass cutouts (4, 5) can be brought, wherein the injection build-up mass solidifies after a reaction time to form a pressure-resistant build-up mass as a spacer element with a material bond to the surrounding materials. Fastening device according to claim 1, characterized in that further bores or glass cutouts (4, 5) are formed within the contact area of the fastening device or the fitting parts, which can be filled with the chemical injection build-up compound. Fastening device according to claim 1 or 2, characterized in that the fastening device is a revolving door fitting with a lateral incision for the laminated safety glass pane or is designed as a glass fitting (11) from essentially two fitting parts arranged on the surfaces of one or two laminated safety glass panes. Fastening device according to claim 1 and 2, characterized in that the fastening device or the fitting parts can be preassembled on the surfaces of the laminated safety glass pane, the fastening screws (6, 13) being able to be tightened with an initial torque at which the PVB- Foil (3) can come, and that then the injection build-up mass can be introduced via the accesses (14) directly into the bores or the glass cutouts (4, 5) up to the filling or partial filling. Fastening device according to one or more of the preceding claims, characterized in that the chemical injection build-up compound after it has hardened between the parts of the fastening device arranged on the surfaces of the laminated safety glass panes is designed as a pressure-loadable spacer element, so that in the event of a subsequent further increase in the tightening torque up to the required fastening torque of the fastening screws (6, 13) no additional pressure loads can be generated on the PVB film and have an increased residual load-bearing capacity in the event of glass breakage. Fastening device according to one or more of the preceding claims, characterized in that the chemical injection build-up compound is present as a multi-component compound. Fastening device according to one or more of the preceding claims, characterized in that the laminated safety glass pane is designed as a door leaf (2) or standing side glazing or with a skylight (9). Laminated safety glass pane, consisting of at least two flat glass panes connected to one another by a PVB film or equivalent, with fittings or fitting parts that can be arranged on the opposite glass surfaces, in the fastening area of which there are bores or glass cutouts (4, 5), the opposing fittings or fitting parts using fastening screws ( 6, 13), which are tightened with an initial torque, characterized in that the area around the fastening screws (6, 13) in the bores and / or in the glass cutouts (4, 5) by a hardenable chemical injection build-up compound up to the fittings or fittings can be filled out. Laminated safety glass pane according to claim 8, characterized in that the injection build-up compound is designed as a pressure-loadable spacer element against incorrect torque exertion of the fastening screws (6, 13) after it has hardened with respect to the fitted fittings or fitting parts. Method for assembling a fastening device or a fitting or fitting parts on the surfaces of at least one laminated safety glass pane, which consists of at least two or more individual flat glass panes with a PVB film in between, the fittings or the like over one another by fastening screws (6, 13) Holes or glass cutouts (4, 5) in the at least one laminated safety glass pane are fastened in connection with a chemically curable injection build-up mass by the following process steps: • Connection of the fittings or the fitting parts to one another by means of an initial torque which is below a usage fastening torque, • Introduction of a chemical, curable injection build-up compound into at least one opening of the fitting or the fitting parts or into glass cutouts (4, 5), or an access (14), • At the end of the hardening time of the injection build-up mass, tighten the fastening screws (6, 13) with the prescribed tightening torque.

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