EP3985344A1 - Transparente ballistisch widerstandsfähige anordnung mit einem rahmen, der sich beim aufprall verformen kann - Google Patents

Transparente ballistisch widerstandsfähige anordnung mit einem rahmen, der sich beim aufprall verformen kann Download PDF

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Publication number
EP3985344A1
EP3985344A1 EP21202551.4A EP21202551A EP3985344A1 EP 3985344 A1 EP3985344 A1 EP 3985344A1 EP 21202551 A EP21202551 A EP 21202551A EP 3985344 A1 EP3985344 A1 EP 3985344A1
Authority
EP
European Patent Office
Prior art keywords
holding
ballistic block
frame
blocking
assembly according
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.)
Pending
Application number
EP21202551.4A
Other languages
English (en)
French (fr)
Inventor
Adrien BOUTY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP3985344A1 publication Critical patent/EP3985344A1/de
Pending legal-status Critical Current

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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
    • F41H5/26—Peepholes; Windows; Loopholes
    • F41H5/263—Mounting of transparent armoured panels, e.g. bulletproof windows on vehicles
    • 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
    • F41H5/02—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

  • This type of transparent solution requires guaranteeing protection against increasingly severe threats, while limiting the increase in mass and thickness.
  • transparent armored solutions are laminates using the same bank of materials: sheets of glass bonded two by two consecutively by viscoelastic spacers constituting a front block with a thickness e ⁇ 100mm, and anti-shatter film in rear side.
  • This type of assembly makes it possible to mobilize three main energy dissipation mechanisms on impact: - by brittle fracture of the glass, - by viscoelastic deformation of the spacers, - by delamination at the glass/spacer interfaces.
  • the thickness e tends to approach the width I (shortest length).
  • the subject of the invention is a transparent assembly with increased resistance to bullets and/or shrapnel and/or other high-energy projectiles, comprising a block ballistic associated with elements for its attachment to an assembly environment, 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 assembly environment is defined as the rear face, and all faces perpendicular to the front and rear faces are side faces of the ballistic block, said fixing elements comprise at least one element for holding and blocking said front face of the ballistic block, an element for maintaining and blocking said rear face, and a frame for maintaining and blocking said side faces, characterized in that the support and blocking frame is capable of absorbing part of the energy of the impact by deforming from irreversibly and spontaneously, over lengths between 5 and 150, preferably 10 and 100% of the length of the frame.
  • the frame is a sacrificial component of the shielding solution. Less rigid, it is thus more likely to absorb some of the transverse modes of impact transmission.
  • the ballistic block is transparent and consists of laminated glazing, comprising sheets of mineral or organic glass joined together by interlayer adhesive layers such as polyvinyl butyral (PVB), thermoplastic polyurethane (TPU), ethylene-vinyl acetate copolymer ( EVA).
  • the mineral glass is for example float, soda-lime, aluminosilicate, borosilicate, optionally hardened, heat-tempered or chemically reinforced.
  • Organic glass is a transparent polymeric material such as poly[methyl (meth)acrylate] (PMMA), polycarbonate (PC).
  • the rearmost sheet mentioned above, with anti-splinter function in English “spallshield” is made of PC or another transparent polymer with a high rate of deformation at break.
  • side faces is justified by the significant thickness of the ballistic block, comparable to its width, whereas for glazing of low thickness compared to their length and their width (dimensions of their two main faces) , these side faces are more usually called "side edges”.
  • the ballistic block projects outward - forward relative to its mounting environment (eg the body of an armored vehicle).
  • the frame for holding and blocking the side faces is parallel to them and has, on its edge closest to the rear face of the ballistic block, an extension perpendicular in the direction moving away from the ballistic block and forming a reinforcement of the frame on which is fixed the element for holding and blocking said rear face, the whole being fixed to the mounting environment.
  • the reinforcement of the frame and the holding and blocking element of the rear face are metallic or equivalent.
  • the frame for holding and blocking the side faces has, on its edge closest to the front face of the ballistic block, an extension perpendicular in the direction approaching the ballistic block, extension which forms the holding and blocking element of said front face of the ballistic block.
  • This holding and blocking element of the front face is metallic or equivalent.
  • a deformable front mastic is inserted in compression between the front face of the ballistic block and its holding and blocking element.
  • any sealant is made of polyurethane, polysulphide or the like.
  • a deformable rear mastic is interposed in compression between the rear face of the ballistic block and its holding and blocking element.
  • a deformable lateral mastic is interposed in compression between the lateral faces of the ballistic block and their holding and blocking frame.
  • the transparent assembly is fixed from the outside or from the inside to its mounting environment by means of bolts passing through the reinforcement of the frame and the holding and blocking element of said rear face.
  • said holding and blocking frame is made of expanded metal in an elastomer matrix, or consists of a grid basket type structure in an elastomer matrix.
  • At least one of the front mastic or the rear mastic conforms to a geometric pattern, or else has a differentiated flexibility/stiffness according to a geometric pattern, in order, during an impact, to increase the deformation potential of the mastic, and/or to absorb certain modes of vibration linked to this geometry.
  • the lateral mastic has a thickness, width, composition, and conforms to a geometric pattern, or else has a flexibility/stiffness differentiated according to a geometric pattern, in order to optimize the compromise between the retention of the last anti-viscoelastic ply splinter constituting said rear face and the absorption of vibrations on the side faces of the ballistic block.
  • the anti-burst viscoelastic ply is made of PC or other transparent polymer with a high rate of strain at break.
  • Another object of the invention consists in the application of a transparent assembly described previously, as glazing of small dimensions and great thickness, with high resistance to bullets and/or fragments and/or other high-energy projectiles, in particular as armored vehicle side glazing.
  • a ballistic block 6 consists of a laminated glazing of thickness e of the same order as its width (shortest length) l. It comprises sheets of mineral glass possibly heat-tempered or chemically reinforced and sheets of polymer materials such as PMMA, PC, bonded two by two adjacent by an intermediate adhesive layer such as PVB, TPU, EVA.
  • the ballistic block sheet located at the bottom of the drawing is a PC or other transparent polymer anti-splinter sheet with a high rate of strain at break and has the function of deforming stopping a projectile coming from the observer of the drawing.
  • the ballistic block 6 is in the assembly position by insertion into a frame 4 extended perpendicularly by its frame 2, both of which are metallic or equivalent.
  • Bolts 9 are shown for fixing the transparent assembly consisting of the ballistic block 6 and the frame 4 and its reinforcement 2 to the bodywork of an armored vehicle, not shown.
  • the front of the sheet in the direction of the observer of the drawing, represents the exterior of the armored vehicle, in the assembly position.
  • the reinforcement of the frame 2 is fixed to the bodywork by the bolts 9, so that the frame 4 and the ballistic block 6 which is inserted therein, project towards the outside of the bodywork.
  • the transparent set of the figure 1 once assembled, is about to receive from outside the armored vehicle, the impact of a projectile simulating a fragment (in English Fragment Simulating Projectile, abbreviated as FSP).
  • FSP English Fragment Simulating Projectile
  • the ballistic block 6 of the preceding figures has been shown, characterized by its thickness of the same order as its width.
  • the arrows on the drawing show the shock waves and deformations at impact, both longitudinal (direction of the projectile), and transverse (plane perpendicular to the direction of the projectile). The glass is then about to break into small pieces.
  • the figure 4 represents the loosening of the anti-splinter PC back sheet after the impact suffered by the transparent assembly of the picture 2 .
  • the figure 5 is a schematic representation of a transparent assembly according to the present invention about to receive impact from an FSP. It is distinguished by the fact that the frame 4 is made of expanded metal in an elastomer matrix, or consists of a grid basket type structure in an elastomer matrix. The frame 4 is capable of deforming under the effect of the impact, in particular of the transverse modes of the shock wave.
  • the transparent set of the figure 5 was deformed on impact.
  • the frame 4 has deformed in such a way as to absorb a transverse shock wave, that is to say in the plane perpendicular to the direction of the projectile FSP (plane parallel to the sheet of the drawing), so as to avoid the loosening of the back anti-splinter sheet.
  • the frame may have deformed, overall, in all directions normal to the side faces of the ballistic block 6, each time in the direction deviating from the latter, and on the other hand accompanying a slight crushing of the ballistic block 6 in the longitudinal direction of the impact of the FSP, i.e. perpendicular to the drawing sheet.
  • FIG. 7 the transparent set of the figure 5 is seen in schematic longitudinal section.
  • a holding and blocking element 1 of the rear face of the ballistic block 6 is intended to be fixed with the reinforcement of the frame 2 to the bodywork, not shown, of an armored vehicle, in particular by bolting.
  • a deformable rear mastic 7 made of PU, polysulphide, elastomer or equivalent is interposed in compression between the rear face of the ballistic block 6 and its holding and blocking element 1.
  • a deformable front mastic 5 of the same material is interposed in compression between the front face of the ballistic block 6 and its holding and locking element 8.
  • a deformable lateral mastic 3 is interposed in compression between the lateral faces of the ballistic block 6 and their holding and locking frame 4.
  • the figure 8 represents an example of a pattern according to which a rear mastic 7 can be shaped according to the invention.
  • the dark hexagonal parts represent the rear mastic 7 made of a deformable polyurethane, polysulphide, elastomer or equivalent material.
  • the parts more clear between the hexagons represent the holding and blocking element 1 of the rear face of the ballistic block 6, holding and blocking element 1 which is made of metal or equivalent.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Joining Of Glass To Other Materials (AREA)
EP21202551.4A 2020-10-15 2021-10-14 Transparente ballistisch widerstandsfähige anordnung mit einem rahmen, der sich beim aufprall verformen kann Pending EP3985344A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2010531A FR3115357A1 (fr) 2020-10-15 2020-10-15 Ensemble transparent à résistance balistique ayant un cadre apte à se déformer à l’impact

Publications (1)

Publication Number Publication Date
EP3985344A1 true EP3985344A1 (de) 2022-04-20

Family

ID=74347234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21202551.4A Pending EP3985344A1 (de) 2020-10-15 2021-10-14 Transparente ballistisch widerstandsfähige anordnung mit einem rahmen, der sich beim aufprall verformen kann

Country Status (2)

Country Link
EP (1) EP3985344A1 (de)
FR (1) FR3115357A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0693366A1 (de) * 1994-06-16 1996-01-24 Saint-Gobain Vitrage Verbundglasscheibe ausgerüstet mit einem Aussenband und Verfahren zur Herstellung dieser Glasscheibe
WO2005014964A1 (en) * 2003-07-18 2005-02-17 Hamilton Erskine Limited Improvements relating to impact-resistant structures and assemblies
WO2006035312A2 (en) * 2004-09-28 2006-04-06 Gti Sucursal Colombia Armored glass composition with perimeter reinforcement
WO2009150380A2 (fr) 2008-06-12 2009-12-17 Saint-Gobain Glass France Vitrage a resistance aux balles augmentee
DE102008028318A1 (de) * 2008-06-13 2009-12-17 Esw Gmbh Durchschusshemmender transparenter Schichtverbund und Schutzanordnung mit einem durchschusshemmenden transparenten Schichtverbund

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0693366A1 (de) * 1994-06-16 1996-01-24 Saint-Gobain Vitrage Verbundglasscheibe ausgerüstet mit einem Aussenband und Verfahren zur Herstellung dieser Glasscheibe
WO2005014964A1 (en) * 2003-07-18 2005-02-17 Hamilton Erskine Limited Improvements relating to impact-resistant structures and assemblies
WO2006035312A2 (en) * 2004-09-28 2006-04-06 Gti Sucursal Colombia Armored glass composition with perimeter reinforcement
WO2009150380A2 (fr) 2008-06-12 2009-12-17 Saint-Gobain Glass France Vitrage a resistance aux balles augmentee
DE102008028318A1 (de) * 2008-06-13 2009-12-17 Esw Gmbh Durchschusshemmender transparenter Schichtverbund und Schutzanordnung mit einem durchschusshemmenden transparenten Schichtverbund

Also Published As

Publication number Publication date
FR3115357A1 (fr) 2022-04-22

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