EP2901099B1 - Élément à déformation et procédé de fabrication d'un élément à déformation - Google Patents

Élément à déformation et procédé de fabrication d'un élément à déformation Download PDF

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Publication number
EP2901099B1
EP2901099B1 EP13783247.3A EP13783247A EP2901099B1 EP 2901099 B1 EP2901099 B1 EP 2901099B1 EP 13783247 A EP13783247 A EP 13783247A EP 2901099 B1 EP2901099 B1 EP 2901099B1
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EP
European Patent Office
Prior art keywords
deformation element
deformation
leg
vehicle
fastening
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
EP13783247.3A
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German (de)
English (en)
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EP2901099A1 (fr
Inventor
Gernot Steger
Andreas Dobson
Nelly Adryanto
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.)
Krauss Maffei Wegmann GmbH and Co KG
Original Assignee
Krauss Maffei Wegmann GmbH and Co KG
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Publication of EP2901099A1 publication Critical patent/EP2901099A1/fr
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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
    • F41H7/046—Shock resilient mounted seats for armoured or fighting vehicles

Definitions

  • the invention relates to a deformation element for protecting a device in a vehicle by converting energy into deformation energy in a Blascheninectiv, with an upper mounting portion for attachment to the device and a lower mounting portion for attachment to the vehicle, wherein the two mounting portions on an upper leg and a lower leg are connected together.
  • the invention further relates to a device, in particular footrest, for a vehicle, a vehicle with a device and a method for manufacturing such a deformation element.
  • a deformation element is in the US 4,711,424 described.
  • the invention can be used in particular in military vehicles. In particular, it serves to protect occupants and facilities from blast effects, in particular by a mine explosion.
  • a generic deformation element which is preferably made of spring steel.
  • the deformation element is U-shaped and connected via spacers to the vehicle and the device to be protected.
  • This deformation element already provides large deformation paths.
  • the legs of the Us move towards each other.
  • the semicircular bending section of the US buckles out from the fastening areas arranged at the ends of the legs.
  • the bending section is wearing.
  • Spacers are provided for attachment to the vehicle and device. These provide space for the bulging bend portion during deformation so that the energy does not occur through contact coupling from the vehicle over the bulging bend portion into the device, as in the deformation element of the prior art 10a and 10b shown.
  • the deformation path that these deformation elements allow until a coupling into the device takes place through the bending section depends accordingly on the one hand from the deformation or buckling of the U-shaped portion of the deformation elements and on the other hand from the height of the spacers.
  • each enlargement of the spacers requires a correspondingly larger space for the deformation elements in the vehicle and leads to a significant increase in space, weight and cost for the Intelterrorism, since the height of the vehicle increases by the same amount as the height of the spacer elements.
  • the invention is therefore based on the object to provide protection against Blastein für senor with a compact design.
  • the V-shaped arrangement of the legs ensures that the deformation element is deformed in such a way that it does not apply or bulge during the deformation and thus allows the largest possible deformation path in relation to the installation space.
  • the deformation element can be arranged between the vehicle and the device such that the legs form a horizontal V.
  • the deformation element is designed such that the upper leg and the lower leg are in particular side by side juxtaposition and / or movable past each other in a deformation of the deformation element. Due to this configuration is in Ratio of the height of the deformation element realized as large as possible deformation.
  • the deformation element folds up substantially flat during deformation.
  • the deformation element may be formed in one piece. Integral deformation elements are relatively simple and inexpensive to produce and also have relatively homogeneous mechanical properties.
  • the deformation element has a connecting portion arranged between the attachment regions, of which one flank the upper leg extends upwards and the lower leg extends downwards.
  • the connecting portion is to be understood as the area of the deformation element via which the two legs are connected to one another.
  • the legs preferably extend together on one flank of the connecting region.
  • the flank is to be understood as a lateral section, in particular a lateral edge of the connecting section.
  • the connecting portion is formed substantially parallel to the upper and / or lower mounting portion.
  • the deformation element as large as possible deformation is possible in relation to its height.
  • the deformation path is almost as large as the distance from the vehicle to the device in the mounting region of the deformation element.
  • the deformation path can be at least 80% of the distance of Vehicle and device amount, preferably at least 90%, more preferably at least 95%.
  • the connecting portion is designed to be movable relative to the attachment areas.
  • the attachment areas move towards each other.
  • the connection area moves in a horizontal plane away from the attachment areas. It shifts in the direction in which the legs extend from the attachment area.
  • the deformation element is designed in such a way that, in the case of a deformation of the deformation element, the connecting section moves away from a straight line connecting the two fastening regions. As a result of this configuration, the device moves in the horizontal direction as little as possible relative to the vehicle during the deformation of the deformation element.
  • the deformation element may be formed such that the connecting portion moves away from a straight line passing through the centers of the upper and lower legs.
  • the upper and lower legs are deformable under the influence of a force directed essentially perpendicular to the vehicle in different deformation sectors offset from each other transversely to the direction of the force. In this way, the legs can not interfere with each other when deforming. It is achieved as large as possible deformation path.
  • the deformation sectors on the DE 10 2008 053 152 A1 directed.
  • each leg has at least two bending edges on which the leg is bent in different directions.
  • the bending edges are formed substantially transversely to the longest side of the leg.
  • at least one, preferably the bending edges runs parallel to a surface plane, in particular a sheet plane, of the blank of the deformation element.
  • a leg can be divided and extend on both sides of the other leg.
  • the two parts of the split leg are connected together at their end.
  • the two parts of the split leg may end up unconnected with each other.
  • the deformation element can be designed to be plane-symmetrical with respect to a plane of symmetry plane.
  • the plane of symmetry is spanned by a vector which extends along the center line in the longitudinal direction of the undivided leg and a vector which is orthogonal to the surface of the undivided leg.
  • the upper and lower legs may preferably be the same length. However, the upper leg and the lower leg can also be designed to have different lengths. In this case, it is of particular advantage if the Angle between the mounting portion arranged on the shorter leg and the shorter leg is smaller than the angle between the mounting portion arranged on the longer leg and the longer leg.
  • the bisecting line of the two legs may be inclined in the direction of the attachment region of the upper or lower leg, particularly preferably in the direction of the attachment region of the shorter leg.
  • the deformation element is made of spring steel.
  • the energy absorption capacity of deformation elements made of spring steel is particularly large.
  • the material thickness of the spring steel is preferably at least 1 mm to 8 mm, preferably 2 mm to 5 mm, particularly preferably substantially 3 mm.
  • the deformation element in the deformation may have a progressive force characteristic.
  • the course of the force characteristic can be adjusted for example by changing the geometry of the legs.
  • the deformation element can be designed for spacer-free mounting on the vehicle or the device, preferably for mounting without spacers to the vehicle and the device.
  • a device of the type mentioned above is proposed to solve the above problem, which has at least one deformation element of the type described above. This results in the same advantages as in the previously described deformation element.
  • the deformation element can be attached to the device without a spacer.
  • a deformation element is arranged in each corner of the device.
  • a particularly favorable introduction of force into the deformation elements results when the openings of the "Vs" of two opposing deformation elements point towards one another or away from one another.
  • the deformation element (s) are configured in such a way that they are torsionally deformable upon the action of a force directed essentially perpendicular to the vehicle floor.
  • the deformation element can be used for a variety of devices of vehicles, such as footrests, seats, tables, storage spaces or shelves. Particularly effective is a footrest for a vehicle with a footrest plate and one or more deformation elements of the type already described has been found.
  • the above object is also achieved by a vehicle having at least one deformation element of the type described above or at least one device of the type described above. There are the same advantages as in the previously described deformation element and the device described above.
  • the deformation element is free of spacers via the lower leg with the vehicle floor and / or over the upper leg without a spacer with the device, in particular the footrest, connected.
  • the connection via connecting means in particular screws.
  • the deformation element can be connected via the lower leg and a spacer to the vehicle floor and / or over the upper leg and a spacer with the device, in particular the footrest.
  • the above object is also achieved by a method of the type mentioned in that the two legs are arranged substantially V-shaped to each other, in particular bent, and that the deformation element is made of spring steel.
  • a U-shaped area is cut out of a blank for the deformation element, in particular a spring steel sheet, in particular punched. After separation, by plastic deformation of the blank, the interior of the "U” can be bent as a first leg in a first direction and the exterior of the "U” as a second leg in another direction.
  • the deformation element according to the invention can be produced in a particularly simple and cost-effective manner and without material weaknesses.
  • the Fig. 1 shows the interior of an armored military vehicle 14 not shown with a vehicle floor 15.
  • a seat 16 is arranged, on which a person can sit.
  • the footrest 10 includes a footrest plate 11 and four deformation elements. 1
  • the energy of the mine in the form of a force acting substantially perpendicular to the vehicle floor 15 force F acts on the vehicle 14.
  • the deformation elements 1 protect the person from the energy of the mine by first decoupling the device 10 from the vehicle 14 and the others convert the energy essentially into deformation energy.
  • the deformation element 1 is made of high-strength steel, in particular spring steel.
  • the FIGS. 2 and 3 show the footrest Fig. 1 ,
  • the footrest 10 comprises a substantially rectangular footrest plate 11. This represents the device 10 to be protected.
  • the footrest plate 11 is formed as a footboard, in particular Aluminiumriffelblech. In the exemplary embodiment, the footrest plate 11 is limited by a peripheral edge 12.
  • the footrest 10 is connected via four deformation elements 1 to the vehicle floor 15.
  • a deformation element 1 is arranged in each corner.
  • the deformation elements 1 arranged in the corners are aligned in such a way that the openings of the Vs are pairwise aligned with each other. Alternatively, the openings of the Vs may also be aligned in pairs away from each other.
  • the deformation elements 1 are not deformed. In an overload, such as a mine action, the yield point of the material of the deformation element 1 is exceeded and it comes to plastic deformation.
  • the deformation elements 1 are of similar construction and are respectively connected via fastening means 9 and upper or lower spacers 13, to the device 10, here the footrest 10, or to the vehicle floor 15. By the spacers 13, a maximum stroke of the deformation elements 1 is provided. However, the deformation elements 1 can also be connected without a spacer to the device 10 and / or the vehicle 14.
  • the Fig. 4 a deformation element 1 is shown in undeformed state.
  • the deformation element 1 has an upper fastening region 2, an upper leg 4, a connecting section 6, a lower leg 5 and a lower fastening region 3.
  • the deformation element 1 is integrally formed.
  • the upper attachment region 2 is connected to the upper leg 4 via a bending edge 7, and the lower attachment region 3 is connected to the lower leg 5 via a bending edge 7.
  • the two legs 4, 5 extend in a V-shape from one flank of the connecting section 6 to the attachment areas 2, 3. Bending edges 7 are likewise located at the transition between the flank of the connecting section 6 and the legs 4, 5.
  • the bending edges 7 run parallel to one another a surface of the blank of the deformation element. 1
  • the connecting portion 6 is formed parallel to the attachment areas 2, 3. According to another embodiment, however, the connecting portion 6 may also be formed perpendicular to the attachment areas 2, 3.
  • the attachment regions 2, 3 may have one or more recesses 8, the bores 8, for receiving fastening means 9.
  • the deformation element 1 is connected to the device 10 and the vehicle 14. This can, as in the FIGS. 2 and 3 show spacer 13 may be provided between the attachment areas 2, 3 and the device 10 and the vehicle 14. In an alternative embodiment, not shown, the deformation elements 1 can also be connected without a spacer to the vehicle 14 or the device 10.
  • Fig. 5 is the deformation element 1 from the Fig. 4 shown in a deformed state.
  • the legs 4, 5 in the deformation without contact side by side assignable.
  • the deformation element 1 is folded flat.
  • the legs 4, 5 are here beyond even further deformed. They can also move past each other. For this purpose, however, it is necessary to attach the legs 4, 5 with spacers 13 to the device 10 or the vehicle 14.
  • one leg 5 is formed divided and extends on both sides of the other leg 4.
  • the split leg 5 is formed longer than the undivided leg 4 in the embodiment.
  • a fork-shaped pedestal can be provided as a spacer element 13.
  • the ends of the split leg 5 may also be formed unconnected.
  • the undivided leg 4 dives in or between the parts of the divided leg 5.
  • the Fig. 6 is increasing that the bending edges 7 are formed at the leg ends substantially transverse to the leg longitudinal direction.
  • each leg 4, 5 of the deformation element 1 has two bending edges 7.
  • the direction of the bending of the bending edges 7 has in each leg 4, 5 in different directions; once in a mathematically positive and once in a mathematically negative direction.
  • the upper leg 4 is shorter than the lower leg 5 is formed.
  • the angle A between the longer leg 5 and the attachment area 3 arranged thereon is greater than the angle B between the shorter leg 4 and the attachment areas 2 arranged thereon.
  • the legs 4, 5 can also be of the same length.
  • the bisector W can run parallel to the attachment areas 2, 3 or the connecting portion 6. However, it can also, in particular with different lengths of legs 4, 5, as in Fig. 7 shown in the direction of the attachment portion 2 of a leg 4, 5, in particular of the shorter leg 4 point.
  • the connecting section 6 is designed to be movable relative to the fastening areas 2, 3.
  • the connecting portion 6 moves in a deformation of the deformation element 1 away from a straight line G B , which connects the two attachment portion 2, 3 together.
  • the connecting portion may move away from a straight line Gs, which passes through the centers of the legs 4, 5 in a deformation of the deformation element.
  • a deformation element 1 is shown in a front view.
  • three deformation sectors I, II, III are shown by dashed lines. If a force F directed essentially perpendicularly to the vehicle floor 15 acts on the deformation element 1, then the legs 4, 5 are deformed in deformation sectors I, II, III which are offset relative to one another in the direction of the force. This has the effect that the legs 4, 5 lie next to one another during the deformation and / or move past each other without contact.
  • the deformation element 1 is also formed plane symmetrical to a plane E, which is spanned by a vector along the center line of the undivided leg 4 and a vector normal to the surface of the undivided leg 4. This level is in the 8 and 9 shown as dash-dot line. Due to the plane symmetrical design of the deformation element 1 a uniform deformation of the deformation element 1 is achieved as possible. In a force acting essentially perpendicular to the vehicle floor 15, the deformation element is even deformed essentially torsion-free.
  • the deformation element 1 deforms over the stroke along a defined force-displacement curve. This can be adjusted by the leg geometry, for example, by widening leg 4, 5. Thus, for example, progressive force-displacement curves can be set.
  • the deformation element 1 of the exemplary embodiment is produced by punching out of a blank a U-shaped region 20 or punching out a blank with a U-shaped region 20 made of a high-strength steel, namely spring steel.
  • the ends of the Us run in a pointed way.
  • the blank is reshaped so that the interior of the Us 21 is bent to one side and the exterior of the US 22 to the other side.
  • the attachment areas 2, 3 are formed.
  • the recesses are also introduced by punching or by drilling in the attachment areas 2, 3, preferably before forming.
  • deformation elements 17 are shown with deformation elements 17 according to the prior art.
  • These deformation elements 17 also have two legs 18, 19, but are U-shaped. These deformation elements are connected via spacers or sockets to the vehicle or the device. These bases are necessary to provide the necessary space for deformation.
  • the attachment portions on the legs deform more than the U-shaped portion. They thus bulge against the attachment areas.
  • the deformation elements 17 can therefore come in the deformation due to a mine explosion with the footrest 10 and with the vehicle floor 15 into contact and thus couple the energy of the explosion over the U-shaped area in the device.
  • the deformation elements according to the invention lie essentially flat together, as in FIGS Fig. 11b and 13b shown so that it can not come to a power or energy coupling in the footrests 10.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Passenger Equipment (AREA)
  • Body Structure For Vehicles (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Claims (14)

  1. Élément à déformation servant à protéger un dispositif (10) dans un véhicule par conversion d'énergie en énergie de déformation sous l'effet d'une explosion, comprenant une zone de fixation supérieure (2) servant à la fixation au dispositif (10) et une zone de fixation inférieure (3) servant à la fixation au véhicule (14), les deux zones de fixation (2, 3) étant reliées l'une à l'autre par le biais d'une branche supérieure (4) et d'une branche inférieure (5), les deux branches (4, 5) étant disposées sensiblement en forme de V l'une par rapport à l'autre,
    caractérisé en ce que
    l'élément à déformation est fabriqué à partir d'acier à ressort.
  2. Élément à déformation selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément à déformation (1) est réalisé de telle sorte que la branche supérieure (5) et la branche inférieure (4) peuvent, lors d'une déformation de l'élément à déformation (1), être placées près l'une de l'autre et/ou déplacées l'une devant l'autre, en particulier sans contact.
  3. Élément à déformation selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément à déformation (1) se replie de manière sensiblement plane lors de la déformation.
  4. Élément à déformation selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque branche (4, 5) comprend au moins deux arêtes de pliage (7) au niveau desquelles la branche (4, 5) est pliée dans différentes directions.
  5. Élément à déformation selon l'une quelconque des revendications précédentes, caractérisé par une partie de liaison (6) disposée entre les zones de fixation (2, 3), partie de liaison à partir d'un flanc de laquelle la branche supérieure (4) s'étend vers le haut et la branche inférieure (5) s'étend vers le bas.
  6. Élément à déformation selon la revendication 5, caractérisé en ce que la partie de liaison (6) est réalisée sensiblement parallèlement à la zone de fixation (2, 3) supérieure et/ou inférieure.
  7. Élément à déformation selon l'une quelconque des revendications précédentes, caractérisé en ce que la branche supérieure et la branche inférieure (4, 5) sont déformables, sous l'effet d'une force (F) orientée sensiblement perpendiculairement au plancher de véhicule (15), dans différents secteurs de déformation (I, II, III) décalés les uns par rapport aux autres transversalement à la direction de force.
  8. Élément à déformation selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une branche (5) est divisée et s'étend des deux côtés de l'autre branche (5).
  9. Élément à déformation selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément à déformation (1) est réalisé de manière à être monté sans pièce d'écartement sur le véhicule (14) et le dispositif (10).
  10. Dispositif, en particulier repose-pieds, pour un véhicule, caractérisé par au moins un élément à déformation (1) selon l'une quelconque des revendications précédentes.
  11. Dispositif selon la revendication 10, caractérisé par une fixation sans pièce d'écartement de l'élément à déformation (1).
  12. Procédé de fabrication d'un élément à déformation (1) servant à protéger un dispositif (10) dans un véhicule (14) par conversion d'énergie en énergie de déformation sous l'effet d'une explosion, comprenant une zone de fixation inférieure (3) servant à la fixation au véhicule (14) et une zone de fixation supérieure (2) servant à la fixation au dispositif (10), les deux zones de fixation (2, 3) étant reliées l'une à l'autre par le biais d'une branche supérieure (4) et d'une branche inférieure (5), les deux branches (4, 5) étant disposées sensiblement en forme de V l'une par rapport à l'autre, en particulier pliées,
    caractérisé en ce que
    l'élément à déformation est fabriqué à partir d'acier à ressort.
  13. Procédé selon la revendication 12, caractérisé en ce qu'à partir d'une ébauche pour l'élément à déformation (1), en particulier à partir d'une tôle en acier à ressort, une zone en forme de U (20) est séparée, en particulier estampée.
  14. Procédé selon la revendication 13, caractérisé en ce que, par déformation plastique de l'ébauche après la séparation, l'intérieur du U (21) est plié en tant que première branche (4) dans une première direction et l'extérieur du U (22) est plié en tant que deuxième branche (5) dans une autre direction.
EP13783247.3A 2012-09-27 2013-09-26 Élément à déformation et procédé de fabrication d'un élément à déformation Active EP2901099B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210109190 DE102012109190B4 (de) 2012-09-27 2012-09-27 Deformationselement und Verfahren zur Herstellung eines Deformationselements
PCT/DE2013/100343 WO2014048420A1 (fr) 2012-09-27 2013-09-26 Élément à déformation et procédé de fabrication d'un élément à déformation

Publications (2)

Publication Number Publication Date
EP2901099A1 EP2901099A1 (fr) 2015-08-05
EP2901099B1 true EP2901099B1 (fr) 2019-01-23

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EP (1) EP2901099B1 (fr)
DE (1) DE102012109190B4 (fr)
ES (1) ES2712680T3 (fr)
WO (1) WO2014048420A1 (fr)

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Publication number Priority date Publication date Assignee Title
PL3022518T3 (pl) 2014-07-29 2017-04-28 Santa Bárbara Sistemas, S.A. Opancerzony pojazd lądowy
DE102019114514A1 (de) * 2019-05-29 2020-12-03 Rheinmetall Waffe Munition Gmbh Energieabsorbtionsvorrichtung und Fahrzeug

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DE102008053152A1 (de) * 2008-10-24 2010-04-29 Krauss-Maffei Wegmann Gmbh & Co. Kg Deformationselement zum Schutz einer Einrichtung, insbesondere einer Fußauflagenplatte, in einem insbesondere militärischen Fahrzeug

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US4711424A (en) * 1982-06-01 1987-12-08 The United States Of America As Represented By The Secretary Of The Navy Combination energy absorbing foundation
DE4011963A1 (de) * 1989-04-13 1990-10-18 Hubert Dr Ing Brendel Schockimpulsisolierende vorrichtung
US5813649A (en) * 1996-03-13 1998-09-29 Simula, Inc. Energy-absorbing deformable bracket
DE19842629C1 (de) * 1998-09-17 2000-03-16 Daimler Chrysler Ag Panzerung für ein Fahrzeug
DE29918981U1 (de) * 1999-10-28 2000-01-20 Franz Kiel GmbH, 86720 Nördlingen Fahrgastsitz
DE10107845A1 (de) * 2001-02-16 2002-09-05 Witte Velbert Gmbh & Co Kg Plastisch verformbares Dämpfungselement
DE10308752A1 (de) * 2003-02-28 2004-09-09 Bayerische Motoren Werke Ag Anordnung einer Frontklappe an einem Fahrzeug
IL160939A (en) * 2004-03-18 2010-11-30 Plasan Kibbutz Sasa Energy absorbing device for a vechicle seat
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Patent Citations (1)

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DE102008053152A1 (de) * 2008-10-24 2010-04-29 Krauss-Maffei Wegmann Gmbh & Co. Kg Deformationselement zum Schutz einer Einrichtung, insbesondere einer Fußauflagenplatte, in einem insbesondere militärischen Fahrzeug

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EP2901099A1 (fr) 2015-08-05
WO2014048420A1 (fr) 2014-04-03
DE102012109190B4 (de) 2014-05-28
DE102012109190A1 (de) 2014-03-27
ES2712680T3 (es) 2019-05-14

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