EP4493885A1 - Vitrage blindé, solidarisé à une carrosserie en l'absence d'un cadre, au moyen d'équerres et de chevilles traversantes - Google Patents
Vitrage blindé, solidarisé à une carrosserie en l'absence d'un cadre, au moyen d'équerres et de chevilles traversantesInfo
- Publication number
- EP4493885A1 EP4493885A1 EP23714797.0A EP23714797A EP4493885A1 EP 4493885 A1 EP4493885 A1 EP 4493885A1 EP 23714797 A EP23714797 A EP 23714797A EP 4493885 A1 EP4493885 A1 EP 4493885A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ballistic block
- ballistic
- face
- block
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H5/00—Armour; Armour plates
- F41H5/013—Mounting or securing armour plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H5/00—Armour; Armour plates
- F41H5/26—Peepholes; Windows; Loopholes
- F41H5/263—Mounting of transparent armoured panels, e.g. bulletproof windows on vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10064—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising at least two glass sheets, only one of which being an outer layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0407—Transparent bullet-proof laminatesinformative reference: layered products essentially comprising glass in general B32B17/06, e.g. B32B17/10009; manufacture or composition of glass, e.g. joining glass to glass C03; permanent multiple-glazing windows, e.g. with spacing therebetween, E06B3/66
Definitions
- Armored land vehicles are equipped with very thick glazing whose main property, apart from transparency, is to offer protection against ballistic threats such as ammunition and mortar shrapnel.
- the transparent armored solutions most commonly manufactured and marketed are laminates using the same bank of materials: sheets of glass glued two by two consecutively by viscoelastic interlayers constituting a front block with a thickness of ⁇ 100 mm, and anti-shatter film on the back.
- This type of assembly makes it possible to mobilize three main energy dissipation mechanisms on impact: - by fragile rupture of the glass, - by viscoelastic deformation of the interlayers, - by delamination at the glass/interlayer interfaces.
- the present invention aims to provide armored glazing which can reach relatively large dimensions, presenting a reduction in the effects of the destructive longitudinal mode, by reducing the waveguide effect of the frame.
- the inventor imagined the removal of the frame to leave as much as possible the side edges in direct contact with the environment outside the armored vehicle, that is to say to release and promote the propagation of the transverse modes of the shock waves.
- the subject of the invention is a ballistic block essentially consisting of laminated glazing of 4 to 10 sheets of mineral glass with thicknesses between 4 and 12 mm, glued two by two consecutively by an interlayer adhesive layer of thickness between 0.1 and 6 mm, characterized in that the length of the two main faces of each said sheet of mineral glass is between 400 and 2000 mm and their width between 150 and 500 mm, the thickness of the ballistic block is between 40 and 100 mm, in that the ballistic block comprises through bores in the direction of its thickness, in that the diameter of the bores is between 1/10 and 1/3 of the thickness of the ballistic block and between 4 and 33 mm, and in that the bores are positioned along three of the four sides or edges of the two main faces of each said sheet of mineral glass, so that their centers are at a distance from said corresponding side or edge of at least twice their diameters, and in that the bores are aligned, regularly spaced from each other and in such number that the sum of the diameters of the bores aligned along a said
- the bores correspond to the fixing points of the ballistic block, and the side of the latter which is free from them is that which is intended to be the lower side in the position of assembly: this arrangement aims to fix the ballistic block only by its sides not presenting any stress induced by the weight, that is to say its right, left and upper sides. This is not the case of the fourth, lower side, which is not provided with bores, and by which the ballistic block is intended to be supported by brackets, as we will see later.
- the structure of the ballistic block made of laminated glazing according to the invention does not exclude the possibility that its main face intended to be in contact with the interior volume of the vehicle or building, in the mounting position, could be made up of an anti-fog sheet.
- -burst for example of polycarbonate (PC) 6 mm thick, bonded to the laminated structure by a layer of thermoplastic polyurethane (TPU).
- the ballistic block according to the invention provides high ballistic resistance for a transparent surface of relatively large dimensions.
- each said sheet of mineral glass is made of soda-lime, aluminosilicate, borosilicate or similar glass, such as floated, is chemically reinforced, thermally tempered, hardened or not.
- each said interlayer adhesive layer is chosen from a layer of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), polycarbonate (PC), poly(ethylene terephthalate) ( PET), casting resin or ionomer resin, or a combination of several of these layers.
- PVB polyvinyl butyral
- PU polyurethane
- EVA ethylene-vinyl acetate copolymer
- PC polycarbonate
- PET poly(ethylene terephthalate)
- casting resin or ionomer resin or a combination of several of these layers.
- the main face of the ballistic block located on the side opposite to that from which an impact is expected, that is to say in contact with the interior of a vehicle or 'a building in the assembly position is made of an anti-shatter sheet of polycarbonate (PC).
- PC polycarbonate
- the thickness of the ballistic block is at least equal to 60 mm.
- the invention also relates to a kit comprising a ballistic block described above, through pins each intended to participate in fixing the ballistic block through its mounting environment and through each said bore, through pins made up of each of a screw, an elastomer sleeve, a spring and a nut, to fix the ballistic block securely to its mounting environment.
- each elastomer sleeve has a length equal to the thickness of the ballistic block.
- each elastomer sleeve has an outer envelope with a geometry identical to that of the bore of the ballistic block, into which it is intended to be introduced.
- each elastomer sleeve has a cylindrical hollow with an internal diameter equal to the diameter of its associated fixing screw.
- At least one elastomer sleeve has a conical outer envelope whose small section is oriented towards the frame.
- the cylindrical hollow of the elastomer sleeve is coaxial with the conical envelope. This conical profile allows a better balance between the force exerted by the screw+sleeve assembly which holds the glazing (ballistic block) in position on the frame, and the force exerted by the spring which tends to push the glazing away from the frame .
- At least one screw has a hexagonal head. This is preferable for better control of the tightening torque, and indirectly of the degree of spring loading at the end of installation.
- the invention also relates to an assembly with increased resistance to bullets and/or fragments and/or other high energy projectiles, comprising a ballistic block, elements for its attachment to an assembly environment, and this environment of assembly, in which one face of said ballistic block intended to be in contact with the external atmosphere is defined as the front face, the opposite face intended to be in contact with the interior volume of the mounting environment is defined as the rear face, and all faces perpendicular to the front and rear faces are side faces of the ballistic block, the rear face of the ballistic block is of dimensions greater than those of an opening in the wall of the mounting environment, in front of which said ballistic block is intended to be fixed, said wall constitutes an armature having a front or exterior face and a rear or interior face, the front face of the armature constitutes a holding element and blocking of said rear face of the ballistic block, characterized in that said assembly comprises an external armature structure which is made up of brackets integral with the armature projecting relative to the front face thereof, which comprise at least two bracket
- brackets supporting the ballistic block by its lower side face are at least three, they are equidistant so as to distribute the weight of the ballistic block regularly between them.
- the springs positioned between the glazing and the frame must make it possible to dissipate in a non-destructive manner the vibration modes induced by the movement of the vehicle on uneven ground on the one hand, and during an impact by an object such as a mortar shard, part of the momentum transferred from said shard to the glazing on the other hand.
- the number of through pins in the ballistic block, their profiles and dimensions, in particular their diameter, are functions of the dimensions of the ballistic block: the thicker the ballistic block, therefore the heavier, the greater will be the diameter of the bores drilled in it. the ballistic block and the outer casing of the elastomer sleeves.
- the number of through dowels must be sufficient to maintain the block secured to the reinforcement, without exceeding what is necessary so as not to introduce an excess of bore in the block, which could excessively reduce the area of vision (transparency) for a passenger of the vehicle.
- the number of retaining brackets can be dictated by simple aesthetic questions of vehicle design and/or ergonomics.
- each bracket is in contact with a side face of the ballistic block via an elastomer pad.
- Another object of the invention consists of the use of a ballistic block described above, as glazing with increased resistance to bullets and/or shards and/or other high energy projectiles, in particular as lateral glazing of armored vehicle.
- a ballistic block described above as glazing with increased resistance to bullets and/or shards and/or other high energy projectiles, in particular as lateral glazing of armored vehicle.
- FIG. 1 is a schematic perspective representation of an assembly according to the invention, near an external armature structure with brackets and bores for housing the assembly;
- FIG. 2 is a schematic perspective representation of the assembly of Figure 1, positioned in the reinforcement structure before installation of the through-anchor system;
- FIG. 3 is a schematic side view of the through-anchor system before installation
- FIG. 4 is a schematic side view of the system of through dowels with a sleeve with a conical profile, after fixing an assembly according to the invention.
- the wall of a bodywork of an armored land vehicle constitutes an external frame structure 10, seen here from the outside of the vehicle.
- the transparent ballistic block 1 has all the characteristics according to the invention described previously, it is intended to be fixed against the front face of the frame 10, facing an opening 11 in the frame 10. surface of the ballistic block 1 is larger than that of the opening 1, so that the ballistic block 1 can completely cover this opening 1 1, with an overflow. On the one hand, it is through this overflow of the ballistic block 1 that it is fixed to the frame 10, as detailed below, on the other hand, in the fixed position of the ballistic block 1, it is in abutment against the front or exterior face of the frame 10.
- An external frame structure is made up of brackets integral with the frame 10 projecting relative to the front face of the latter 10, which comprise at least two brackets 13 intended to support the ballistic block 1 by its lower side face, and almost all of its weight, fixing the ballistic block 1 in its vertical position, and at least two brackets 14 in the right and left position relative to the ballistic block 1, so as to fix it in its horizontal position .
- brackets integral with the frame 10 projecting relative to the front face of the latter 10 which comprise at least two brackets 13 intended to support the ballistic block 1 by its lower side face, and almost all of its weight, fixing the ballistic block 1 in its vertical position, and at least two brackets 14 in the right and left position relative to the ballistic block 1, so as to fix it in its horizontal position .
- brackets integral with the frame 10 projecting relative to the front face of the latter 10 which comprise at least two brackets 13 intended to support the ballistic block 1 by its lower side face, and almost all of its weight, fixing the ballistic block 1 in its vertical position, and at least two brackets
- the ballistic block 1 comprises bores 2 intended to receive through pins not shown and which, in the fixing position of the ballistic block 1, are each facing a corresponding bore 12 in the frame 10. With reference to Figure 2, the ballistic block is positioned in its fixing position, held and blocked by the front face of the frame 10, and the brackets 13, 14.
- each pair of bores 2, 12 cooperates with a through pin consisting of a screw 21, an elastomer sleeve 22, a spring 23 and a nut 24, to help fix the ballistic block 1 integrally to the frame 10.
- the elastomer sleeve 22 has external dimensions identical to the dimensions of the bore 2, including a sleeve length 22 identical to the thickness of the ballistic block 1.
- the elastomer sleeve 22 is introduced into the bore 2, and the screw 21 from the outside into the hollow cylindrical volume internal to the elastomer sleeve 22, so as to pass through the thickness of the ballistic block 1 and that of the frame 10 and to be screwed to a nut 24 in contact with the rear or interior face of the frame 10.
- a spring 23 is positioned between the rear or interior face of the ballistic block 1 and the front or exterior face of the frame 10, so as to be constrained to a length of between 50 and 100% of its empty length.
- the elastomer sleeve 22 has a conical outer envelope whose small section is oriented towards the reinforcement 10.
- the cylindrical hollow of the elastomer sleeve 22 is coaxial with the conical envelope. This conical profile allows better balancing between the force exerted by the screw 21 + sleeve 22 assembly which holds the glazing (ballistic block 1) in position on the frame 10, and the force exerted by the spring 23 which tends to push back the glazing 1 of frame 10.
- the screw 21 has a hexagonal head. This is preferable for better control of the tightening torque, and indirectly of the degree of loading of spring 23 at the end of installation.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2202342A FR3133666A1 (fr) | 2022-03-17 | 2022-03-17 | Vitrage blindé, solidarisé à une carrosserie en l’absence d’un cadre, au moyen d’équerres et de chevilles traversantes |
| PCT/FR2023/050337 WO2023175268A1 (fr) | 2022-03-17 | 2023-03-14 | Vitrage blindé, solidarisé à une carrosserie en l'absence d'un cadre, au moyen d'équerres et de chevilles traversantes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4493885A1 true EP4493885A1 (fr) | 2025-01-22 |
Family
ID=83189029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23714797.0A Withdrawn EP4493885A1 (fr) | 2022-03-17 | 2023-03-14 | Vitrage blindé, solidarisé à une carrosserie en l'absence d'un cadre, au moyen d'équerres et de chevilles traversantes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250207896A1 (fr) |
| EP (1) | EP4493885A1 (fr) |
| CN (1) | CN118900980A (fr) |
| FR (1) | FR3133666A1 (fr) |
| WO (1) | WO2023175268A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2932411B1 (fr) | 2008-06-12 | 2011-01-21 | Saint Gobain | Vitrage a resistance aux balles augmentee |
| US20150233680A1 (en) * | 2012-11-30 | 2015-08-20 | Renton Coil Spring Company | Resiliently mounted armor panel |
| US20150090411A1 (en) * | 2013-09-30 | 2015-04-02 | Bayer Materialscience Llc | Polycarbonate laminate window covers for rapid deployment providing protection from forced-entry and ballistics |
| DE102017103125A1 (de) * | 2017-02-16 | 2018-08-16 | Ffg Flensburger Fahrzeugbau Gesellschaft Mbh | Bolzen zur Befestigung der Zusatzpanzerung eines gepanzerten Fahrzeugs |
-
2022
- 2022-03-17 FR FR2202342A patent/FR3133666A1/fr not_active Withdrawn
-
2023
- 2023-03-14 EP EP23714797.0A patent/EP4493885A1/fr not_active Withdrawn
- 2023-03-14 CN CN202380028326.2A patent/CN118900980A/zh active Pending
- 2023-03-14 WO PCT/FR2023/050337 patent/WO2023175268A1/fr not_active Ceased
- 2023-03-14 US US18/847,572 patent/US20250207896A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20250207896A1 (en) | 2025-06-26 |
| WO2023175268A1 (fr) | 2023-09-21 |
| FR3133666A1 (fr) | 2023-09-22 |
| CN118900980A (zh) | 2024-11-05 |
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Legal Events
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