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EP2304380B1 - Floor protection device for the cabin of a motor vehicle - Google Patents

Floor protection device for the cabin of a motor vehicle Download PDF

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Publication number
EP2304380B1
EP2304380B1 EP09766004.7A EP09766004A EP2304380B1 EP 2304380 B1 EP2304380 B1 EP 2304380B1 EP 09766004 A EP09766004 A EP 09766004A EP 2304380 B1 EP2304380 B1 EP 2304380B1
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EP
European Patent Office
Prior art keywords
protection device
floor
caissons
walls
plate
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.)
Active
Application number
EP09766004.7A
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German (de)
French (fr)
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EP2304380B2 (en
EP2304380A1 (en
Inventor
Benoit Bettencourt
Jacky Jacquemont
Christian Noel
Xavier Poirmeur
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.)
Nexter Systems SA
Original Assignee
Nexter Systems 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.)
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Publication date
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Application filed by Nexter Systems SA filed Critical Nexter Systems SA
Priority to PL09766004T priority Critical patent/PL2304380T5/en
Publication of EP2304380A1 publication Critical patent/EP2304380A1/en
Publication of EP2304380B1 publication Critical patent/EP2304380B1/en
Application granted granted Critical
Publication of EP2304380B2 publication Critical patent/EP2304380B2/en
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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
    • F41H7/00—Armoured or armed vehicles
    • F41H7/02—Land vehicles with enclosing armour, e.g. tanks
    • F41H7/04—Armour construction
    • F41H7/042—Floors or base plates for increased land mine protection

Definitions

  • the technical field of the invention is that of protective devices of a vehicle cabin floor and in particular a floor of a military vehicle.
  • the aim is to absorb part of the effect of the blast of the mine by the deformation of the armor plate while leaving a free space allowing the deformation of the plate without impact on the floor.
  • the deformable connecting means also absorb some of the impact energy.
  • the device described by this patent does not sufficiently protect a vehicle floor.
  • the energy absorption capacities of the connecting means are in fact insufficient.
  • the solutions described by DE19913845 do not allow the free space below the vehicle to be used to house equipment or components of the vehicle itself.
  • the patent DE19935573 which forms a starting point for claim 1, describes a protection device similar to that proposed by DE19913845 .
  • This device comprises a deformable plate disposed below the floor of the vehicle and which is connected thereto by longitudinal sections with interposition of a layer of damping material between the profiles and the vehicle.
  • the aim of the invention is to propose a device which makes it possible, on the one hand, to provide for a minimum mass a reinforced protection of the floor of a vehicle, and secondly to allow the use of the free space disposed under the floor of the vehicle without penalizing the protection performance.
  • the subject of the invention is a floor protection device for a vehicle cabin device comprising at least one shielding plate and deformable connection means, said shielding plate being disposed at a distance from the floor of the cabin and being connected to the latter by the deformable connection means, characterized in that at least one of the deformable connection means is constituted by a partitioned box, which is fixed to the cabin at a substantially vertical side wall of the latter, the cloisonne box comprising at least two walls which are substantially perpendicular to the shielding plate and which are integral on the one hand with a lower wall on which the shielding plate bears and on the other hand with a top wall which comes in support on the cabin, the walls having dimensions such that they deform by buckling when the shock of an explosive device or exploding mine e n below the vehicle.
  • the walls will be substantially perpendicular to a side wall.
  • the protective device may comprise at least two boxes integral with the same bottom wall, the boxes being arranged at a distance from one another and separated by a space.
  • the boxes are also attached to the same side plate, the boxes, the side plate and the bottom wall thus forming a housing.
  • the side plate may comprise at least one opening giving access to the space separating the boxes.
  • the opening may be closed by a hatch or cover, the space forming a storage compartment.
  • the floor protection device may comprise at least three boxes delimiting two spaces.
  • the side plate may form an angle with respect to the armor plate.
  • the housing may also be positioned such that it comprises a plane upper rim which extends towards the outside of the vehicle beyond the side wall, upper plane rim which is parallel or merged with the upper walls of the caissons .
  • At least one box is filled with an energy absorbing material.
  • a light armored vehicle 1 comprises a cabin 2 fixed to a chassis 3 carrying wheels 4.
  • the interior of the cabin is accessible through a door 5 and it contains seats 6 which are suspended from the ceiling of the cabin by a supporting structure 7.
  • Such a provision is traditional and allows to isolate the seats of the floor 8 of the cabin, which protects the crew from the effects on the floor of the explosion of a mine.
  • a floor protection device 9 which comprises a shielding plate 10 (for example of steel) which is arranged at a distance from the floor 8 of the cabin.
  • the plate 10 is fixed to the cabin 2 by means of deformable connecting means 11.
  • at least one of the deformable connecting means 11 (and preferably all the connecting means 11) is constituted by a box cloisonne.
  • the shield plate 10 is fixed by three boxes 11 arranged on each side of the vehicle.
  • the boxes 11 are arranged below a side wall 2a or 2b of the cabin 2, partition which is substantially vertical.
  • the forces received by the armor plate 10 will be communicated to the cabin, not at the floor 8, but at the walls 2a, 2b which are slightly deformable.
  • the figure 2b shows in perspective a box 11 according to this first embodiment of the invention.
  • Closing box means a substantially parallelepipedal structure which comprises at least two walls 12a, 12b which will be arranged substantially perpendicular to the shielding plate 10.
  • the walls 12a, 12b are integral with a lower wall 14 on which will support the shielding plate 10.
  • the walls 12a, 12b are also secured to an upper wall 13 which bears on the cabin 2 and allows the attachment of the device to the latter.
  • Each box 11 defines an internal space 15 which is open laterally on both sides of the box.
  • the walls 12a, 12b are therefore substantially vertical and they are further dimensioned so that they deform by buckling during an impact transmitted by the armor plate 10 and due to the detonation of an explosive device. This dimensioning will be done in a classical way by calculation according to the material of the walls 12a, 12b and the expected level of impact. The buckling will be all the more important that the height of the wall will be important compared to its section.
  • the upper wall 13 will carry bores for fixing the box 11 to the floor 8 or the cabin 2.
  • the lower wall 14 will also have holes for fixing the armor plate 10 to the box 11.
  • the boxes 11 are made of steel (they could according to the desired level of protection be made of another material, for example aluminum or composite).
  • the walls 12a, 12b provide the rigidity of the box.
  • an explosive device or a mine explodes below the vehicle 1, the armor plate 10 is deformed by the effect of the blast.
  • the free space 16 between the plate 10 and the floor 8 allows such deformation without the shock being transmitted to the floor 8.
  • the forces are communicated by the plate to the boxes 11 which retransmit them to the walls 2a, 2b of the cabin.
  • the walls 12a, 12b will also deform by buckling. This deformation will consume some of the energy received but especially mitigate the violence of the shock. Indeed, the energy of the explosion will be transmitted over a shorter period which will reduce the constraints received by the vehicle and mitigate the destructive effects on the cabin.
  • FIGS. 3a and 3b show another example of embodiment in which there is on either side of the vehicle a single box 11 but having a length substantially equal to that of the armor plate 10.
  • the box 11 To give the box 11 its rigidity / deformability characteristics enabling it to perform its function of attenuation of shocks, it has inside it walls 17 parallel to the walls 12a, 12b (here four partitions).
  • the partitions 17 will for example be welded to the upper walls 13 and lower 14 of the box.
  • FIGS 4a and 4b show another embodiment in which three boxes 11 are used which are all integral with the same lower wall 18.
  • the boxes 11 are arranged at a distance from one another. Two adjacent boxes 11 are thus separated by a space 19.
  • These spaces 19 can be used to form storage areas used by the vehicle crew.
  • These spaces 19 can also be used to house the vehicle components, for example an exhaust silencer or batteries.
  • the figure 4c differs from the figure 4b in that the boxes 11 are also attached to one and the same side plate 20 which is here perpendicular to the bottom wall 18.
  • the boxes 11, the side plate 20 and the bottom wall 18 form a housing 21.
  • the vehicle thus has a housing 21 on each side.
  • Each housing constitutes a compact assembly incorporating the caissons 11 ensuring the damping of the shock wave transmitted by the shielding plate 10.
  • the side plate 20 constitutes another deformable element which completes the caissons 11. It also makes it possible to provide a closure housing that isolates the internal spaces 19 from the outside of the housing. Advantageously, openings in the side plate 20 will be provided, which will carry closure covers allowing access to the internal storage spaces 19.
  • the figure 5 differs from the previous embodiment in that the boxes 11, grouped in housings 21, comprise a lateral plate 20 which forms an angle with respect to the shielding plate 10.
  • baffle device 9 Such an arrangement gives an overall shape of baffle device 9, form ensuring a deflection of the breath received from a mine when the latter is close to one of the edges of the armor plate 10.
  • each housing 21 is positioned such that it has a plane upper flange 22 which extends outwardly of the vehicle beyond the side wall 2a, 2b.
  • This flange 22 is here formed by a portion of the upper wall 13. It constitutes a step to facilitate access to the vehicle.
  • the figure 6 shows another embodiment of the housings 21 according to the invention.
  • the side plate 20 of each housing is again inclined with respect to the shielding plate 10.
  • the bottom wall 18 carries two rows of holes to allow the attachment of the shielding plate (not shown figure 6 ). Furthermore, the upper walls 13 (13a, 13b and 13c) of the boxes have holes for the passage of the fixing screws of the device on the cabin.
  • the boxes 11 do not all have the same shape.
  • the end boxes 11a and 11c have side walls 12a, 12b which are not parallel. At least one wall (12a) is, however, always perpendicular to the bottom wall 18 (and to the armor plate).
  • the other wall 12b is slightly inclined with respect to the lower wall 18. Such an arrangement is intended to adapt the external shapes of the boxes before 11c and 11a rear (thus the housing 21) to the vehicle structure.
  • the walls 12a and 12b nevertheless provide resistance to deformation for the boxes considered.
  • the caissons 11 comprise, at some of their lateral walls 12, an opening 24. These openings make it possible to lighten the structure of the housings and also give access to the fastening screws for securing the upper faces 13 of the boxes and the vehicle cab.
  • each housing 21 here comprises an upper flange 22 which completes the closure of the spaces 19.
  • This flange 22 is parallel to the upper walls 13 of the boxes and located at a plane slightly below the plane of the upper walls 13. The flange forms thus a step giving access to the cab of the vehicle.
  • the boxes 11 are empty. It is possible as an alternative to have inside one or more boxes a deformable material that can complete the absorption of the impact energy. For example, it will be possible to dispose in the boxes a deformable foam, for example a metal foam (such as an aluminum foam). We can also arranging in the boxes 11 sand or a honeycomb structure metal or composite material, such as a honeycomb. It is also possible to have a damping material between the protection plate 10 and the bottom wall 14 and / or between the upper wall 13 and the floor of the cell 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Body Structure For Vehicles (AREA)

Description

Le domaine technique de l'invention est celui des dispositifs de protection d'un plancher de cabine de véhicule et notamment d'un plancher de véhicule militaire.The technical field of the invention is that of protective devices of a vehicle cabin floor and in particular a floor of a military vehicle.

Il est connu d'assurer la protection d'un plancher de véhicule en disposant une plaque de blindage à distance de ce plancher, plaque qui est fixée à la cabine par des moyens de liaison déformables tels que des plots élastiques. Le brevet DE19913845 décrit un tel dispositif de protection.It is known to ensure the protection of a vehicle floor by providing a shielding plate at a distance from this floor, which plate is fixed to the cabin by deformable connecting means such as elastic studs. The patent DE19913845 describes such a protective device.

Le but recherché est d'absorber une partie de l'effet du souffle de la mine par la déformation de la plaque de blindage tout en laissant un espace libre autorisant la déformation de la plaque sans impact sur le plancher. Les moyens de liaison déformables absorbent également une partie de l'énergie du choc.The aim is to absorb part of the effect of the blast of the mine by the deformation of the armor plate while leaving a free space allowing the deformation of the plate without impact on the floor. The deformable connecting means also absorb some of the impact energy.

Cependant le dispositif décrit par ce brevet ne permet pas de protéger d'une façon suffisante un plancher de véhicule. Les capacités d'absorption d'énergie des moyens de liaison sont en effet insuffisantes. Par ailleurs les solutions décrites par DE19913845 ne permettent pas d'utiliser l'espace libre situé en dessous du véhicule pour loger des équipements ou des composants du véhicule lui-même.However, the device described by this patent does not sufficiently protect a vehicle floor. The energy absorption capacities of the connecting means are in fact insufficient. In addition, the solutions described by DE19913845 do not allow the free space below the vehicle to be used to house equipment or components of the vehicle itself.

Le brevet DE19935573 , qui forme un point de départ pour la revendication 1, décrit un dispositif de protection analogue à celui proposé par DE19913845 . Ce dispositif comprend une plaque déformable disposée en dessous du plancher du véhicule et qui est relié à celui ci par des profilés longitudinaux avec interposition d'une couche de matériau amortisseur entre les profilés et le véhicule.The patent DE19935573 , which forms a starting point for claim 1, describes a protection device similar to that proposed by DE19913845 . This device comprises a deformable plate disposed below the floor of the vehicle and which is connected thereto by longitudinal sections with interposition of a layer of damping material between the profiles and the vehicle.

L'invention a pour but de proposer un dispositif permettant, d'une part d'assurer pour une masse minimale une protection renforcée du plancher d'un véhicule, et d'autre part de permettre l'utilisation de l'espace libre disposé sous le plancher du véhicule sans pour autant pénaliser les performances de protection.The aim of the invention is to propose a device which makes it possible, on the one hand, to provide for a minimum mass a reinforced protection of the floor of a vehicle, and secondly to allow the use of the free space disposed under the floor of the vehicle without penalizing the protection performance.

Ainsi l'invention a pour objet un dispositif de protection de plancher pour une cabine de véhicule dispositif comprenant au moins une plaque de blindage et des moyens de liaison déformable, ladite plaque de blindage étant disposée à distance du plancher de la cabine et étant reliée à celle ci par les moyens de liaison déformable, dispositif caractérisé en ce qu'au moins un des moyens de liaison déformable est constitué par un caisson cloisonné, qui est fixé à la cabine au niveau d'une cloison latérale sensiblement verticale de cette dernière, le caisson cloisonné comprenant au moins deux parois qui sont sensiblement perpendiculaires à la plaque de blindage et qui sont solidaires d'une part d'une paroi inférieure sur laquelle vient en appui la plaque de blindage et d'autre part d'une paroi supérieure qui vient en appui sur la cabine, les parois ayant des dimensions telles qu'elles se déforment par flambage lors du choc d'un engin explosif ou d'une mine explosant en dessous du véhicule.Thus, the subject of the invention is a floor protection device for a vehicle cabin device comprising at least one shielding plate and deformable connection means, said shielding plate being disposed at a distance from the floor of the cabin and being connected to the latter by the deformable connection means, characterized in that at least one of the deformable connection means is constituted by a partitioned box, which is fixed to the cabin at a substantially vertical side wall of the latter, the cloisonne box comprising at least two walls which are substantially perpendicular to the shielding plate and which are integral on the one hand with a lower wall on which the shielding plate bears and on the other hand with a top wall which comes in support on the cabin, the walls having dimensions such that they deform by buckling when the shock of an explosive device or exploding mine e n below the vehicle.

Selon un mode particulier de réalisation, les parois seront sensiblement perpendiculaires à une cloison latérale.According to a particular embodiment, the walls will be substantially perpendicular to a side wall.

Le dispositif de protection peut comprendre au moins deux caissons solidaires d'une même paroi inférieure, les caissons étant disposés à distance l'un de l'autre et séparés par un espace.The protective device may comprise at least two boxes integral with the same bottom wall, the boxes being arranged at a distance from one another and separated by a space.

Avantageusement, les caissons sont fixés par ailleurs à une même plaque latérale, les caissons, la plaque latérale et la paroi inférieure formant ainsi un boîtier.Advantageously, the boxes are also attached to the same side plate, the boxes, the side plate and the bottom wall thus forming a housing.

La plaque latérale pourra comporter au moins une ouverture donnant accès à l'espace séparant les caissons.The side plate may comprise at least one opening giving access to the space separating the boxes.

L'ouverture pourra être obturée par une trappe ou un couvercle, l'espace formant un casier de rangement.The opening may be closed by a hatch or cover, the space forming a storage compartment.

Le dispositif de protection de plancher pourra comprendre au moins trois caissons délimitant deux espaces.The floor protection device may comprise at least three boxes delimiting two spaces.

Selon un mode particulier de réalisation, la plaque latérale peut former un angle par rapport à la plaque de blindage.According to a particular embodiment, the side plate may form an angle with respect to the armor plate.

Le boîtier peut par ailleurs être positionné de telle sorte qu'il comporte un rebord supérieur plan qui s'étend vers l'extérieur du véhicule au-delà de la cloison latérale, rebord supérieur plan qui est parallèle ou confondu avec les parois supérieures des caissons.The housing may also be positioned such that it comprises a plane upper rim which extends towards the outside of the vehicle beyond the side wall, upper plane rim which is parallel or merged with the upper walls of the caissons .

Selon une variante de réalisation, au moins un caisson est rempli par un matériau absorbant l'énergie.According to an alternative embodiment, at least one box is filled with an energy absorbing material.

L'invention sera mieux comprise à la lecture de la description qui va suivre de différents modes de réalisation, description faite en référence aux dessins annexés et dans lesquels :

  • la figure 1 est une vue latérale d'un véhicule blindé léger équipé d'un dispositif de protection de plancher selon un premier mode de réalisation de l'invention,
  • la figure 2a est une vue de la précédente en coupe transversale suivant le plan dont la trace AA est visible à la figure 1,
  • la figure 2b est une vue en perspective du caisson seul,
  • les figures 3a et 3b sont des vues partielles d'un deuxième mode de réalisation de l'invention, la figure 3b étant une vue en perspective du boîtier seul,
  • les figures 4a et 4b sont des vues partielles d'un troisième mode de réalisation de l'invention, la figure 4b étant une vue en perspective du boîtier seul,
  • la figure 4c est une vue en perspective représentant une variante de réalisation du boîtier,
  • la figure 5 est une vue en coupe transversale d'un véhicule blindé léger équipé d'un dispositif selon un quatrième mode de réalisation de l'invention,
  • la figure 6 est une vue en perspective de deux boîtiers suivant un cinquième mode de réalisation de l'invention.
The invention will be better understood on reading the following description of various embodiments, a description given with reference to the appended drawings and in which:
  • the figure 1 is a side view of a light armored vehicle equipped with a floor protection device according to a first embodiment of the invention,
  • the figure 2a is a view of the previous cross-section along the plane whose AA trace is visible at figure 1 ,
  • the figure 2b is a perspective view of the box alone,
  • the Figures 3a and 3b are partial views of a second embodiment of the invention, the figure 3b being a perspective view of the housing alone,
  • the Figures 4a and 4b are partial views of a third embodiment of the invention, the figure 4b being a perspective view of the housing alone,
  • the figure 4c is a perspective view showing an alternative embodiment of the housing,
  • the figure 5 is a cross-sectional view of a light armored vehicle equipped with a device according to a fourth embodiment of the invention,
  • the figure 6 is a perspective view of two housings according to a fifth embodiment of the invention.

En se reportant à la figure 1, un véhicule 1 blindé léger comprend une cabine 2 fixée sur un châssis 3 portant des roues 4. L'intérieur de la cabine est accessible par une porte 5 et il renferme des sièges 6 qui sont suspendus au plafond de la cabine par une structure porteuse 7. Une telle disposition est classique et permet d'isoler les sièges du plancher 8 de la cabine, ce qui protège l'équipage contre les effets sur le plancher de l'explosion d'une mine.Referring to the figure 1 a light armored vehicle 1 comprises a cabin 2 fixed to a chassis 3 carrying wheels 4. The interior of the cabin is accessible through a door 5 and it contains seats 6 which are suspended from the ceiling of the cabin by a supporting structure 7. Such a provision is traditional and allows to isolate the seats of the floor 8 of the cabin, which protects the crew from the effects on the floor of the explosion of a mine.

Conformément à l'invention un dispositif de protection de plancher 9 est prévu qui comprend une plaque de blindage 10 (par exemple en acier) qui est disposée à distance du plancher 8 de la cabine.According to the invention a floor protection device 9 is provided which comprises a shielding plate 10 (for example of steel) which is arranged at a distance from the floor 8 of the cabin.

La plaque 10 est fixée à la cabine 2 par l'intermédiaire de moyens de liaison déformables 11. Conformément à l'invention au moins un des moyens de liaison déformable 11 (et de préférence tous les moyens de liaison 11) est constitué par un caisson cloisonné. On voit sur les figures 1 et 2a que la plaque de blindage 10 est fixée par trois caissons 11 disposés de chaque côté du véhicule.The plate 10 is fixed to the cabin 2 by means of deformable connecting means 11. According to the invention at least one of the deformable connecting means 11 (and preferably all the connecting means 11) is constituted by a box cloisonne. We see on Figures 1 and 2a that the shield plate 10 is fixed by three boxes 11 arranged on each side of the vehicle.

Comme cela est plus particulièrement visible à la figure 2a les caissons 11 sont disposés en dessous d'une cloison latérale 2a ou 2b de la cabine 2, cloison qui est sensiblement verticale. Ainsi les efforts reçus par la plaque de blindage 10 seront communiqués à la cabine, non pas au niveau du plancher 8, mais au niveau des parois 2a,2b qui sont peu déformables.As this is particularly visible in the figure 2a the boxes 11 are arranged below a side wall 2a or 2b of the cabin 2, partition which is substantially vertical. Thus the forces received by the armor plate 10 will be communicated to the cabin, not at the floor 8, but at the walls 2a, 2b which are slightly deformable.

La figure 2b montre en perspective un caisson 11 selon ce premier mode de réalisation de l'invention.The figure 2b shows in perspective a box 11 according to this first embodiment of the invention.

On entend par caisson cloisonné une structure sensiblement parallélépipédique qui comporte au moins deux parois 12a,12b qui seront disposées de façon sensiblement perpendiculaire à la plaque de blindage 10. Les parois 12a,12b sont solidaires d'une paroi inférieure 14 sur laquelle viendra en appui la plaque de blindage 10. Les parois 12a,12b sont par ailleurs solidaires d'une paroi supérieure 13 qui vient en appui sur la cabine 2 et permet la fixation du dispositif à cette dernière. Chaque caisson 11 délimite un espace interne 15 qui est ouvert latéralement des deux côtés du caisson.Closing box means a substantially parallelepipedal structure which comprises at least two walls 12a, 12b which will be arranged substantially perpendicular to the shielding plate 10. The walls 12a, 12b are integral with a lower wall 14 on which will support the shielding plate 10. The walls 12a, 12b are also secured to an upper wall 13 which bears on the cabin 2 and allows the attachment of the device to the latter. Each box 11 defines an internal space 15 which is open laterally on both sides of the box.

Les parois 12a,12b sont donc sensiblement verticales et elles sont par ailleurs dimensionnées de telle sorte qu'elles se déforment par flambage lors d'un choc transmis par la plaque de blindage 10 et dû à la détonation d'un engin explosif. Ce dimensionnement sera fait de façon classique par calcul en fonction du matériau des parois 12a,12b et du niveau de choc attendu. Le flambage sera d'autant plus important que la hauteur de la paroi sera importante par rapport à sa section.The walls 12a, 12b are therefore substantially vertical and they are further dimensioned so that they deform by buckling during an impact transmitted by the armor plate 10 and due to the detonation of an explosive device. This dimensioning will be done in a classical way by calculation according to the material of the walls 12a, 12b and the expected level of impact. The buckling will be all the more important that the height of the wall will be important compared to its section.

Les parois 12a,12b délimitant l'espace interne 15 du caisson, ces parois sont par ailleurs également sensiblement perpendiculaires à la paroi 2a,2b considérée de la cabine 2.The walls 12a, 12b delimiting the internal space 15 of the box, these walls are moreover also substantially perpendicular to the wall 2a, 2b considered of the cabin 2.

Cette orientation des parois conduit à réduire leur section ce qui favorise leur déformation par flambage. Une telle configuration est donc très éloignée de celle des longerons longitudinaux décrits par DE19935573 . En effet ces derniers s'étendent sur toute la longueur du véhicule (ce qui accroît la section des parois verticales des longerons) et ils ont une hauteur réduite. De tels longerons absorbent peu d'énergie par déformation et communiquent l'essentiel du choc reçu à la structure du véhicule.This orientation of the walls leads to reduce their section which promotes their deformation by buckling. Such a configuration is therefore very far from that of longitudinal longitudinal members described by DE19935573 . Indeed they extend over the entire length of the vehicle (which increases the section of the vertical walls of the side members) and they have a reduced height. Such spars absorb little energy by deformation and communicate most of the shock received in the vehicle structure.

La paroi supérieure 13 portera des perçages permettant de fixer le caisson 11 au plancher 8 ou à la cabine 2.The upper wall 13 will carry bores for fixing the box 11 to the floor 8 or the cabin 2.

La paroi inférieure 14 portera par ailleurs des perçages permettant de fixer la plaque de blindage 10 au caisson 11.The lower wall 14 will also have holes for fixing the armor plate 10 to the box 11.

Les caissons 11 sont réalisés en acier (ils pourraient suivant le niveau de protection recherché être réalisés en un autre matériau, par exemple en aluminium ou en composite). Les parois 12a,12b assurent la rigidité du caisson. Lorsqu'un engin explosif ou une mine explose en dessous du véhicule 1, la plaque de blindage 10 se déforme par l'effet du souffle. L'espace libre 16 entre la plaque 10 et le plancher 8 autorise une telle déformation sans que le choc ne soit transmis au plancher 8.The boxes 11 are made of steel (they could according to the desired level of protection be made of another material, for example aluminum or composite). The walls 12a, 12b provide the rigidity of the box. When an explosive device or a mine explodes below the vehicle 1, the armor plate 10 is deformed by the effect of the blast. The free space 16 between the plate 10 and the floor 8 allows such deformation without the shock being transmitted to the floor 8.

Les efforts sont communiqués par la plaque aux caissons 11 qui les retransmettent aux parois 2a,2b de la cabine. Cependant les parois 12a,12b vont également se déformer par flambage. Cette déformation va consommer une partie de l'énergie reçue mais surtout atténuer la violence du choc. En effet, l'énergie de l'explosion sera transmise sur une durée moins brève ce qui diminuera les contraintes reçues par le véhicule et atténuera les effets destructeurs sur la cabine.The forces are communicated by the plate to the boxes 11 which retransmit them to the walls 2a, 2b of the cabin. However the walls 12a, 12b will also deform by buckling. This deformation will consume some of the energy received but especially mitigate the violence of the shock. Indeed, the energy of the explosion will be transmitted over a shorter period which will reduce the constraints received by the vehicle and mitigate the destructive effects on the cabin.

Il est possible de donner aux caissons 11 différentes formes.It is possible to give the caissons 11 different forms.

Les figures 3a et 3b montrent un autre exemple de réalisation dans lequel on dispose de part et d'autre du véhicule un seul caisson 11 mais ayant une longueur sensiblement égale à celle de la plaque de blindage 10.The Figures 3a and 3b show another example of embodiment in which there is on either side of the vehicle a single box 11 but having a length substantially equal to that of the armor plate 10.

Pour donner au caisson 11 ses caractéristiques de rigidité/déformabilité lui permettant d'assurer sa fonction d'atténuation des chocs, on dispose à l'intérieur de celui ci des cloisons 17 parallèles aux parois 12a,12b (ici quatre cloisons). Les cloisons 17 seront par exemple soudées aux parois supérieures 13 et inférieure 14 du caisson.To give the box 11 its rigidity / deformability characteristics enabling it to perform its function of attenuation of shocks, it has inside it walls 17 parallel to the walls 12a, 12b (here four partitions). The partitions 17 will for example be welded to the upper walls 13 and lower 14 of the box.

Les figures 4a et 4b montrent un autre mode de réalisation dans lequel on met en oeuvre trois caissons 11 qui sont tous solidaires d'une même paroi inférieure 18.The Figures 4a and 4b show another embodiment in which three boxes 11 are used which are all integral with the same lower wall 18.

Il n'est alors pas nécessaire de prévoir une paroi inférieure 14 spécifique à chaque caisson 11. Les parois latérales 12a,12b et supérieure 13 forment ainsi une structure en U qui sera par exemple soudée à la paroi commune 18. Lors de l'initiation d'une mine, le choc reçu par la plaque de blindage 10 sera donc transmis à la paroi 18 qui assurera une répartition de ce choc sur les différents caissons 11.It is then not necessary to provide a lower wall 14 specific to each box 11. The side walls 12a, 12b and upper 13 thus form a U-shaped structure which will for example be welded to the common wall 18. During the initiation of a mine, the shock received by the armor plate 10 will be transmitted to the wall 18 which will ensure a distribution of this shock on the various boxes 11.

Avec un tel mode de réalisation les caissons 11 sont disposés à distance les uns des autres. Deux caissons voisins 11 sont ainsi séparés par un espace 19.With such an embodiment, the boxes 11 are arranged at a distance from one another. Two adjacent boxes 11 are thus separated by a space 19.

Ces espaces 19 peuvent être mis à profit pour constituer des zones de rangement utilisables par l'équipage du véhicule.These spaces 19 can be used to form storage areas used by the vehicle crew.

Ces espaces 19 peuvent aussi permettre de loger des organes du véhicule, par exemple un silencieux d'échappement ou des batteries.These spaces 19 can also be used to house the vehicle components, for example an exhaust silencer or batteries.

On notera qu'il serait également possible dans le mode de réalisation des figures 3a,3b d'utiliser les espaces internes au caisson 11 (entre les cloisons 17) comme des zones de rangement.It will be noted that it would also be possible in the embodiment of the Figures 3a, 3b use the internal spaces to the box 11 (between the partitions 17) as storage areas.

La figure 4c diffère de la figure 4b en ce que les caissons 11 sont également fixés à une même plaque latérale 20 qui est ici perpendiculaire à la paroi inférieure 18. Les caissons 11, la plaque latérale 20 et la paroi inférieure 18 forment un boîtier 21.The figure 4c differs from the figure 4b in that the boxes 11 are also attached to one and the same side plate 20 which is here perpendicular to the bottom wall 18. The boxes 11, the side plate 20 and the bottom wall 18 form a housing 21.

Le véhicule comporte ainsi un boîtier 21 de chaque côté. Chaque boîtier constitue un ensemble compact incorporant les caissons 11 assurant l'amortissement de l'onde de choc transmise par la plaque de blindage 10. La plaque latérale 20 constitue un autre élément déformable qui complète les caissons 11. Elle permet aussi de fournir une fermeture du boîtier qui isole les espaces internes 19 de l'extérieur du boîtier. On prévoira avantageusement des ouvertures dans la plaque latérale 20 qui porteront des couvercles de fermeture permettant d'accéder aux espaces de rangement internes 19.The vehicle thus has a housing 21 on each side. Each housing constitutes a compact assembly incorporating the caissons 11 ensuring the damping of the shock wave transmitted by the shielding plate 10. The side plate 20 constitutes another deformable element which completes the caissons 11. It also makes it possible to provide a closure housing that isolates the internal spaces 19 from the outside of the housing. Advantageously, openings in the side plate 20 will be provided, which will carry closure covers allowing access to the internal storage spaces 19.

La figure 5 diffère du mode de réalisation précédent en ce que les caissons 11, groupés en boîtiers 21, comportent une plaque latérale 20 qui forme un angle par rapport à la plaque de blindage 10.The figure 5 differs from the previous embodiment in that the boxes 11, grouped in housings 21, comprise a lateral plate 20 which forms an angle with respect to the shielding plate 10.

Une telle disposition donne une forme globale de déflecteur au dispositif 9, forme assurant une déviation du souffle reçu d'une mine lorsque cette dernière est voisine d'un des rebords de la plaque de blindage 10.Such an arrangement gives an overall shape of baffle device 9, form ensuring a deflection of the breath received from a mine when the latter is close to one of the edges of the armor plate 10.

Par ailleurs on voit sur la figure 5 que chaque boîtier 21 est positionné de telle sorte qu'il comporte un rebord supérieur plan 22 qui s'étend vers l'extérieur du véhicule au-delà de la cloison latérale 2a,2b.Moreover we see on the figure 5 that each housing 21 is positioned such that it has a plane upper flange 22 which extends outwardly of the vehicle beyond the side wall 2a, 2b.

Ce rebord 22 est ici formé par une partie de la paroi supérieure 13. Il constitue un marchepied permettant de faciliter l'accès au véhicule.This flange 22 is here formed by a portion of the upper wall 13. It constitutes a step to facilitate access to the vehicle.

La figure 6 montre un autre mode de réalisation des boîtiers 21 selon l'invention. Suivant ce mode la plaque latérale 20 de chaque boîtier est là encore inclinée par rapport à la plaque de blindage 10.The figure 6 shows another embodiment of the housings 21 according to the invention. In this mode, the side plate 20 of each housing is again inclined with respect to the shielding plate 10.

On voit sur la figure 6 que la paroi inférieure 18 porte deux rangées de trous pour permettre la fixation de la plaque de blindage (non représentée figure 6). Par ailleurs les parois supérieures 13 (13a,13b et 13c) des caissons portent des trous pour le passage des vis de fixation du dispositif sur la cabine.We see on the figure 6 that the bottom wall 18 carries two rows of holes to allow the attachment of the shielding plate (not shown figure 6 ). Furthermore, the upper walls 13 (13a, 13b and 13c) of the boxes have holes for the passage of the fixing screws of the device on the cabin.

On remarque que dans ce mode de réalisation les caissons 11 n'ont pas tous la même forme. Les caissons d'extrémité 11a et 11c comportent des parois latérales 12a,12b qui ne sont pas parallèles. Au moins une paroi (12a) est cependant toujours perpendiculaire à la paroi inférieure 18 (et à la plaque de blindage). L'autre paroi 12b est légèrement inclinée par rapport à la paroi inférieure 18. Une telle disposition a pour objet d'adapter les formes externes des caissons avant 11c et arrière 11a (donc du boîtier 21) à la structure du véhicule. Les parois 12a et 12b assurent néanmoins une résistance à la déformation pour les caissons considérés.Note that in this embodiment the boxes 11 do not all have the same shape. The end boxes 11a and 11c have side walls 12a, 12b which are not parallel. At least one wall (12a) is, however, always perpendicular to the bottom wall 18 (and to the armor plate). The other wall 12b is slightly inclined with respect to the lower wall 18. Such an arrangement is intended to adapt the external shapes of the boxes before 11c and 11a rear (thus the housing 21) to the vehicle structure. The walls 12a and 12b nevertheless provide resistance to deformation for the boxes considered.

On remarque également sur cette figure que les caissons 11 comportent au niveau de certaines de leurs parois latérales 12 une ouverture 24. Ces ouvertures permettent d'assurer un allègement de la structure des boîtiers et donnent par ailleurs un accès aux vis de fixation permettant de solidariser les faces supérieures 13 des caissons et la cabine du véhicule.It can also be seen in this figure that the caissons 11 comprise, at some of their lateral walls 12, an opening 24. These openings make it possible to lighten the structure of the housings and also give access to the fastening screws for securing the upper faces 13 of the boxes and the vehicle cab.

On voit sur cette figure que les plaques latérales 20 comportent des ouvertures donnant accès à l'espace 19 séparant les caissons 11. Ces ouvertures sont obturées par des trappes 22 dotées de charnières et de moyens de fermeture non représentés. Les espaces 19 forment ainsi des casiers de rangement. On voit enfin sur la figure 6 que chaque boîtier 21 comporte ici un rebord supérieur 22 qui complète la fermeture des espaces 19. Ce rebord 22 est parallèle aux parois supérieures 13 des caissons et situé au niveau d'un plan légèrement en dessous du plan des parois supérieures 13. Le rebord forme ainsi un marchepied donnant accès à la cabine du véhicule.It can be seen in this figure that the side plates 20 have openings giving access to the space 19 separating the boxes 11. These openings are closed by hatches 22 provided with hinges and not shown closure means. The spaces 19 thus form storage lockers. We finally see on the figure 6 each housing 21 here comprises an upper flange 22 which completes the closure of the spaces 19. This flange 22 is parallel to the upper walls 13 of the boxes and located at a plane slightly below the plane of the upper walls 13. The flange forms thus a step giving access to the cab of the vehicle.

Dans tous les modes de réalisation décrits précédemment les caissons 11 sont vides. Il est possible à titre de variante de disposer à l'intérieur d'un ou plusieurs caissons un matériau déformable pouvant compléter l'absorption de l'énergie du choc. On pourra par exemple disposer dans les caissons une mousse déformable, par exemple une mousse métallique (telle une mousse d'aluminium). On pourra aussi disposer dans les caissons 11 du sable ou bien une structure alvéolaire métallique ou en matériau composite, telle qu'un nid d'abeille. Il est possible aussi de disposer un matériau amortissant entre la plaque de protection 10 et la paroi inférieure 14 et/ou entre la paroi supérieure 13 et le plancher de la cellule 8.In all the embodiments described above the boxes 11 are empty. It is possible as an alternative to have inside one or more boxes a deformable material that can complete the absorption of the impact energy. For example, it will be possible to dispose in the boxes a deformable foam, for example a metal foam (such as an aluminum foam). We can also arranging in the boxes 11 sand or a honeycomb structure metal or composite material, such as a honeycomb. It is also possible to have a damping material between the protection plate 10 and the bottom wall 14 and / or between the upper wall 13 and the floor of the cell 8.

Claims (10)

  1. A protection device (9) for the floor (8) of a vehicle cab (2), device comprising at least one armour plate (10) and deformable linking means, said armour plate (10) being arranged at a distance from the cab floor (8) and which is connected to the latter by the deformable linking means, device characterised in that at least one of the deformable linking means is constituted by a compartmented caisson (11), that is fastened to the cab (2) on a substantially vertical lateral partition (2a, 2b) of the latter, the compartmented caisson (11) comprising at least two walls (12a, 12b) that are substantially perpendicular to the armour plate (10) and which are integral firstly with a lower wall (14) on which the armour plate (10) presses and secondly with an upper wall (13) which presses on the cab (2), the walls (12a, 12b) having dimensions such that they buckle on impact of an explosive device or a mine exploding under the vehicle.
  2. A floor protection device according to Claim 1, characterised in that the walls (12a, 12b) are substantially perpendicular to a lateral partition (2a, 2b).
  3. A floor protection device according to one of Claims 1 or 2, characterised in that it comprises at least two caissons (11) integral with a same lower wall (18), the caissons (11) being positioned at a distance from one another and separated by a space (19).
  4. A floor protection device according to Claim 3, characterised in that the caissons (11) are further fastened to a same lateral plate (20), the caissons (11), the lateral plate (20) and the lower wall (18) thus forming a chamber (21).
  5. A floor protection device according to Claim 4, characterised in that the lateral plate (20) incorporates at least one opening giving access to the space (19) separating the caissons (11).
  6. A floor protection device according to Claim 5, characterised in that the opening is blocked by a hatch or cover (22), the space (19) thus forming a storage case.
  7. A floor protection device according to one of Claims 5 or 6, characterised in that it comprises at least three caissons (11) delimiting two spaces (19).
  8. A floor protection device according to one of Claims 4 to 6, characterised in that the lateral plate (20) forms an angle with respect to the armour plate (10).
  9. A floor protection device according to Claim 8, characterised in that the chamber (21) is positioned such that it incorporates a plane upper rim (22) which extends towards the outside of the vehicle beyond the lateral partition (2a, 2b), such plane upper rim being parallel to or indistinguishable from the upper walls (13) of the caissons (11).
  10. A floor protection device according to one of Claims 1 to 9, characterised in that at least one caisson (11) is filled by an energy absorbing material.
EP09766004.7A 2008-06-12 2009-06-10 Floor protection device for the cabin of a motor vehicle Active EP2304380B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09766004T PL2304380T5 (en) 2008-06-12 2009-06-10 Floor protection device for the cabin of a motor vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0803278A FR2932556B1 (en) 2008-06-12 2008-06-12 FLOOR PROTECTION DEVICE FOR A VEHICLE CAB
PCT/FR2009/000684 WO2009153442A1 (en) 2008-06-12 2009-06-10 Floor protection device for the cabin of a motor vehicle

Publications (3)

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EP2304380A1 EP2304380A1 (en) 2011-04-06
EP2304380B1 true EP2304380B1 (en) 2013-09-11
EP2304380B2 EP2304380B2 (en) 2016-06-22

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US (1) US8960068B2 (en)
EP (1) EP2304380B2 (en)
CA (1) CA2726643C (en)
ES (1) ES2435432T5 (en)
FR (1) FR2932556B1 (en)
PL (1) PL2304380T5 (en)
WO (1) WO2009153442A1 (en)

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FR2932556A1 (en) 2009-12-18
CA2726643C (en) 2017-02-21
US20110079134A1 (en) 2011-04-07
PL2304380T5 (en) 2017-06-30
PL2304380T3 (en) 2014-02-28
WO2009153442A1 (en) 2009-12-23
EP2304380B2 (en) 2016-06-22
US8960068B2 (en) 2015-02-24
FR2932556B1 (en) 2014-09-12
ES2435432T5 (en) 2016-11-22
CA2726643A1 (en) 2009-12-23
ES2435432T3 (en) 2013-12-19
EP2304380A1 (en) 2011-04-06

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