LAMINATED GLAZING WITH SEVERAL PANELS, OF WHICH A REGION FOR POSITIONING ADJACENT PANELS NEXT TO ONE ANOTHER IS REINFORCED BY INSERTING A STRUCTURING ELEMENT

Abstract

A laminated glazed unit includes at least first and a second elementary transparent laminated panels whose edges are next to one another and whose respective glass sheets are distinct and separated from one another, wherein the glass sheets of the first panel, on the one hand, and the glass sheets of the second panel, on the other hand, are joined together in pairs by an intermediate adhesive layer which is rigidly attached to the surface of the assembly of the first and second panels and wherein, in a region in which the first and second panels are positioned next to one another, a structuring element is inserted into the interlayer adhesive layer.

Claims

1. A laminated glazed unit comprising at least first and a second elementary transparent laminated panels whose edges are juxtaposed and whose respective glass sheets are distinct and separated from one another, wherein the glass sheets of the first panel and the glass sheets of the second panel are joined together in pairs by an intermediate adhesive layer which is rigidly attached to a surface of an assembly of the first and second panels and wherein, in a region in which the first and second panels are juxtaposed, a structuring element is inserted into the intermediate adhesive layer.

2. The laminated glazed unit according to claim 1, wherein each glass sheet of the first panel is juxtaposed with a corresponding glass sheet of the second panel, with interposition of a gasket.

3. The laminated glazed unit according to claim 1, wherein the structuring element is made of organic, mineral, composite or metallic material.

4. The laminated glazed unit according to claim 1, wherein the glass sheets are made of mineral glass, or of organic glass.

5. The laminated glazed unit according to claim 1, wherein the intermediate adhesive layer is made of polyvinyl butyral (PVB), thermoplastic polyurethane (TPU), ethylene-vinyl acetate copolymer (EVA), or ionomer resin.

6. The laminated glazed unit according to claim 1, wherein at least the first and the second elementary transparent laminated panels each consist of at least three glass sheets bonded in pairs by an intermediate adhesive layer which is rigidly attached to the surface of the assembly of first and second panels, and wherein in a juxtaposition zone of the first and second panels, a structuring element is inserted into at least two intermediate adhesive layers.

7. The laminated glazed unit according to claim 1, wherein the structuring element extends over the entire juxtaposition zone of the first and second panels.

8. The laminated glazed unit according to claim 1, wherein the structuring element extends over part or several separate parts of the juxtaposition zone of the first and second panels.

9. The laminated glazed unit according to claim 1, comprising at least a first, a second and a third elementary transparent laminated panels.

10. A method comprising providing a glazed unit for attachment by bonding, bolting or pinching with the laminated glazing unit according to claim 1.

11. The method according to claim 10, wherein the glazed unit is a glazed unit for aerial vehicle or a land vehicle, or a watercraft.

12. The laminated glazed unit according to claim 4, wherein the mineral glass is soda-lime, aluminosilicate or borosilicate glass, optionally hardened, thermally tempered, or chemically strengthened, and the organic glass is poly(methyl methacrylate) (PMMA), polycarbonate (PC), polyethylene terephthalate (PET) or polyurethane (PU).

13. The method according to claim 11, wherein the aerial vehicle is a drone, a plane or a helicopter and the land vehicle is a road or rail vehicle.

Description

[0019] The invention will be better understood in the context of the description of the appended drawings, in which

[0020] FIG. 1 is a schematic representation in cross-sectional view of a laminated glazed unit according to the invention.

[0021] FIG. 2 is an enlarged view of the-cross section of FIG. 1 in the juxtaposition zone of the first and of the second panels.

[0022] FIG. 3 is a front view of a double windshield intended to occupy the surface of two windshields of the prior art, separated by a vertical structural upright forming part of the cockpit of an aircraft.

[0023] With reference to FIGS. 1 and 2, a laminated glazed unit according to the invention comprises a first and a second elementary transparent laminated panels. The first elementary laminated panel consists of a first glass sheet 1 bonded to a second glass sheet 4 by means of an intermediate adhesive layer 7. The second elementary panel consists of a first glass sheet 2 bonded to a second glass sheet 5 by the intermediate adhesive layer 7 which is rigidly attached to the entire extent of the first and second panels. The first glass sheets 1, 2 of the first and second panels are made of the same material, for example chemically-strengthened aluminosilicate glass with a thickness suitable for the use of the glazed unit, in particular between 2 and 8 mm. The second glass sheets 4, 5 of the first and second panels are also made of the same material, for example chemically-strengthened aluminosilicate glass or soda-lime glass thermally tempered with a thickness of between 2 and 8 mm, or poly(methyl methacrylate) (PMMA), polyurethane (PU) or polycarbonate (PC) with a thickness of between 3 and 16 mm. If these latter 4, 5 are made of mineral glass, the intermediate adhesive layer 7 is made of polyvinyl butyral (PVB) with a thickness of between 0.38 and 8 mm, if they are made of polymer material, the intermediate adhesive layer is made of thermoplastic polyurethane (TPU) with a thickness of between 0.5 and 10 mm.

[0024] The edges of the first and second elementary panels define corresponding profiles making it possible to join them perfectly as shown.

[0025] A structuring element 8 is embedded in the intermediate adhesive layer 7 only in the juxtaposition zone of the two panels, in accordance with a band on either side of their juxtaposition profile (boundary between the two panels). The structuring element 8 is transparent and made of chemically-strengthened glass, for example from 1 to 2.5 mm thick, or metal from 0.5 to 4 mm thick, or thermosetting resin strengthened with glass or aramid reinforcing fibers, from 0.7 to 3 mm thick.

[0026] The first, respectively second glass sheets 1, 2, respectively 4, 5 of the first and second panels are connected in a sealed manner by a seal 3, respectively 6 made of a compressible, potentially transparent deformable polymer material, such as polyurethane, silicone or polysulfide.

[0027] FIG. 3 shows a windshield of relatively large surface area, the complete contour of the outer first glass sheets 1, 2 of the first and second panels constituting the entire laminated windshield, as well as the seal 3 connecting these first glass sheets 1, 2. The seal is very fine and discrete relative to the entire surface of the windshield.

[0028] The invention thus makes it possible to increase the field of view of the user, pilot, or passenger, by eliminating or decreasing the use of structural uprights forming part of the body/cockpit of the vehicle, or mounting frames that partially and incompletely separate glazed surfaces. Conversely, the invention provides relatively large and entirely transparent surfaces, free of intermediate structural uprights for the attachment of the glazed units. The assembly and disassembly thereof is simplified and faster.