WO2024256763A1 - Front crossmember of a motor vehicle with programmed deformation during a front impact - Google Patents

Front crossmember of a motor vehicle with programmed deformation during a front impact Download PDF

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Publication number
WO2024256763A1
WO2024256763A1 PCT/FR2024/050599 FR2024050599W WO2024256763A1 WO 2024256763 A1 WO2024256763 A1 WO 2024256763A1 FR 2024050599 W FR2024050599 W FR 2024050599W WO 2024256763 A1 WO2024256763 A1 WO 2024256763A1
Authority
WO
WIPO (PCT)
Prior art keywords
equipment
cross member
crossmember
motor vehicle
member 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.)
Ceased
Application number
PCT/FR2024/050599
Other languages
French (fr)
Inventor
Manaf KARKAR
Abdelkrim OUSSAADA
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.)
Stellantis Auto SAS
Original Assignee
Stellantis Auto SAS
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 Stellantis Auto SAS filed Critical Stellantis Auto SAS
Publication of WO2024256763A1 publication Critical patent/WO2024256763A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0007—Measures or means for preventing or attenuating collisions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/152—Front or rear frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/082—Engine compartments
    • B62D25/084—Radiator supports

Definitions

  • the present invention claims priority from French application 2305958 filed on June 13, 2023, the content of which (text, drawings and claims) is incorporated herein by reference.
  • the invention relates to motor vehicles, and more specifically to the front crossmembers which form part of the structures of some of these vehicles.
  • Certain motor vehicles comprise a structure comprising in a front part a front crossmember fixedly installed in a transverse direction upstream of equipment.
  • the vehicle When the vehicle (automobile) suffers a front impact, possibly with a small overlap, its front crossmember may be depressed and exert pressure against the equipment located downstream. In this case, the front crossmember transmits a force to this equipment, which can damage the latter, possibly severely.
  • this equipment is an electric motor forming part of the vehicle's powertrain (or GMP)
  • the damage may consist of a short circuit which can start a fire and/or cause electrocution.
  • the invention therefore aims in particular to improve the situation.
  • This front crossmember is characterized by the fact that it comprises at least one cutout at a chosen location, and at least one attached part fixedly secured to it at the level of the cutout so as to be detached from it in the event of a front impact suffered by the motor vehicle and causing pressure of the front crossmember against the equipment of an intensity greater than a predefined intensity, in order to allow deformation of the front crossmember minimizing a force transmitted to the equipment.
  • the separation of the added part from the front cross member when the latter is pressed sufficiently against the equipment makes it possible to deform the front cross member in a programmed manner at the level of the zone comprising the cutout, and thus to minimize the force transmitted to the equipment in order to minimize (and if possible avoid) its damage.
  • the front cross member according to the invention may include other characteristics which may be taken separately or in combination, and in particular:
  • - its attached part may comprise at least two through holes crossed respectively by at least two coupling elements fixedly secured to it on either side of the cutout on an upper or lower face, and capable of breaking when the intensity of the pressure caused is greater than the predefined intensity;
  • each of the through holes may have an oblong shape, with a larger side suitable for being installed in a longitudinal direction of the motor vehicle, perpendicular to the transverse direction;
  • each of the coupling elements can be a rivet or a screw;
  • the cutting can be total so as to subdivide the front cross member into two right and left parts coupled together by the attached part;
  • [0014] - its attached part may have a generally U-shaped section, so as to locally surround the upper, lower and front faces which comprise the front crossmember;
  • [0016] - its attached part may have a thickness greater than or equal to 1.5 mm.
  • the invention also provides a motor vehicle comprising, on the one hand, a front part comprising equipment, and, on the other hand, a front crossmember of the type presented above, and fixedly installed in this front part in a transverse direction upstream of this equipment.
  • this motor vehicle may constitute a car.
  • FIG. 1 schematically illustrates, in a perspective view from the front side, a portion of a front portion of a motor vehicle structure comprising an exemplary embodiment of a front cross member according to the invention installed upstream of an electric motor of a GMP, and
  • FIG. 2 schematically illustrates, in a perspective view from above, a portion of the front crossmember of Figure 1.
  • the invention aims in particular to propose a front crossmember TV intended to equip a front part PV of a structure SV of a motor vehicle V upstream of an EV equipment, and capable of deforming in a programmed manner when it is pressed against this EV equipment when the motor vehicle V suffers an impact from the front, to limit the transmission of force to this EV equipment.
  • the front crossmember TV is intended to be part of a motor vehicle V of the car type.
  • the invention is not limited to this type of motor vehicle. It in fact concerns any motor vehicle comprising a front part which must comprise a front crossmember in front of at least one piece of equipment.
  • the X direction is the longitudinal direction of the vehicle (automobile) V, which is substantially parallel to the lateral (or longitudinal) sides comprising the side doors
  • the Y direction is the transverse direction of the vehicle V, which is perpendicular to the longitudinal direction X
  • the Z direction is the vertical direction of the vehicle V, which is perpendicular to the longitudinal X and transverse Y directions.
  • the concept of "front” is defined in relation to the front end of the vehicle, and the concept of “rear” is defined in relation to the rear end of the vehicle (opposite the front end). Consequently, the front part of an element is (intended to be) oriented towards the front end of the vehicle, while the rear part of this element is (intended to be) oriented towards the rear end of the vehicle.
  • the concepts of “upstream” and “downstream” are defined relative to the front end of the vehicle V. Consequently, a first element located downstream of a second element is further from the front end of the vehicle V than this second element, and in this case this second element is located upstream of the first element.
  • FIG. 1 schematically illustrates at least partially a part of a front part of a structure SV of a vehicle (automobile) V comprising an exemplary embodiment of a front crossmember TV according to the invention, installed upstream of EV equipment to be protected.
  • the EV equipment is an electric motor forming part of the powertrain (or GMP) of the vehicle V.
  • GMP powertrain
  • the front crossmember TV could be installed upstream of other equipment requiring limited force transfer.
  • the front cross member TV is suitable for being installed in the transverse direction Y of the vehicle V in the front part PV of the structure SV of the latter (V), upstream of the EV equipment.
  • This front TV crossmember comprises at least one cutout DT at a chosen location, and at least one insert PR. As illustrated at least partially in FIGS. 1 and 2, this front TV crossmember may have a generally rectangular section.
  • cutting means a voluntary absence of material which may be total or partial.
  • the (each) insert PR is fixedly secured to the front crossmember TV at the (one) cutout DT.
  • This fixed securing is carried out so as to allow the detachment of the insert PR from the front crossmember TV in the event of a front impact suffered by the vehicle V and causing pressure on the front crossmember TV. against the EV equipment of an intensity which is higher than a predefined intensity.
  • This decoupling is intended to allow a (programmed) deformation of the front TV cross member which minimizes the force transmitted by the latter (TV) to the EV equipment.
  • the PR insert when the front crossmember TV is pushed backwards during a front impact until it is pressed against the EV equipment, the PR insert will separate from the front crossmember TV if the intensity of the pressure exerted on this EV equipment is strictly greater than the predefined intensity.
  • the area of the front crossmember TV comprising the cutout DT, and until then consolidated by the PR insert, can then advantageously deform at the level of this cutout DT and thus allow a minimization of the force which is transmitted to the EV equipment so as to minimize (and if possible avoid) its damage. This results in a reinforcement of the passive safety of the vehicle.
  • the EV equipment is electric (or electronic), as is particularly the case when it is an electric motor, this makes it possible to avoid the creation of a short circuit and/or to cause an electrocution.
  • the insert PR may comprise at least two through holes TT which are crossed respectively by at least two coupling elements EC fixedly secured to the front crosspiece TV on either side of the (each) cutout DT on an upper face FS or lower face Fl which it (TV) comprises.
  • These coupling elements EC are arranged so as to break when the intensity of the pressure caused by the front crosspiece TV on the equipment EV is greater than the predefined intensity. It will be understood that the impact of the front crosspiece TV on the equipment EV causes a sectioning of the coupling elements EC when its intensity is greater than the predefined intensity.
  • the two through holes TT are defined in upper sub-parts SP1 and SP2 of the insert PR which are placed above the upper face FS of the front crosspiece TV. But in an alternative embodiment not illustrated, the two through holes TT could be defined in lower sub-parts of the insert PR which are placed below the lower face Fl of the front crosspiece TV.
  • each of the coupling elements EC can be a rivet or a screw. It will be noted that when using EC screws, only one is sufficient in each through hole TT, as illustrated in FIG. 2. When using EC rivets, it is possible to use one or two in each through hole TT.
  • each of the through holes TT can have an oblong shape, with a larger side suitable for being installed in the longitudinal direction X of the vehicle V.
  • This oblong shape is advantageous because it does not allow any play in the transverse direction Y, but allows a small amount of play in the longitudinal direction X which promotes the cutting of the coupling elements EC upon impact with the equipment EV.
  • the securing of the PR insert to the front cross member TV could be done by means of weld points defined so as to be “destroyed” when the intensity of the pressure caused by the front cross member TV on the EV equipment is greater than the predefined intensity. It will be understood that in this case the PR insert does not need to include through holes and EC coupling elements, the latter (EC) being replaced by the weld points.
  • the (each) DT cut can be total or partial.
  • the front crossmember TV comprises a single total cutout DT, and therefore which subdivides it into two right parts P1 and left P2 which are coupled together by the added part PR.
  • the cutout DT is off-center to the right (relative to the median zone of the front crossmember TV) because the EV equipment is installed in the front part PV in an off-center position to the right.
  • the chosen location where a cutout DT is defined depends on the transverse position where the zone of the EV equipment that can be impacted first when the front crossmember TV is driven in is located.
  • the front cross member TV may comprise on opposite upper FS and lower Fl faces respectively two partial cutouts DT.
  • these two partial cutouts DT are defined one above the other, and intended to be open in front of (or on the side of) the EV equipment in order to facilitate the deformation of the front cross member TV during the impact with separation of the PR insert.
  • the PR insert may have a generally U-shaped section. In this case, it locally surrounds the upper FS, lower FL and front FV faces that the front crosspiece TV comprises.
  • the front FV face connects the upper FS and lower FL faces together, and is opposite the EV equipment.
  • This generally U-shaped section is currently preferred because it allows the front crossmember TV to be effectively and sufficiently consolidated at at least one cutout DT, so that it performs its function within the vehicle V in the absence of an impact.
  • a generally L-shaped section could be envisaged.
  • the front cross member TV comprises only one cutting zone DT. But it could comprise several (at least two) cutouts DT in at least two chosen locations distant along the transverse direction Y. In this case, it (TV) comprises several (at least two) added parts PR.
  • the insert PR is shaped at least in its upper part so as to include two downward DC recesses.
  • the central sub-part SP3 of the upper part of the insert PR is installed in the DT cutout at a vertical level (in the vertical direction Z) which is slightly lower than the vertical level where the right SP1 and left SP2 sub-parts are installed (connected by this central sub-part SP3).
  • This arrangement makes it possible in particular to improve the precision of the positioning of the insert PR relative to the front crossmember TV at the level of a total DT cutout, and to define a kind of continuity of the right P1 and left P2 parts of the front crossmember TV via the central sub-part SP3.
  • the PR insert can be made of steel or aluminum.
  • the insert PR may, for example, have a thickness greater than or equal to 1.5 mm. For example, this thickness may be between 2 mm and 3 mm. It will also be noted that the insert PR may, for example, have a thickness substantially identical to that of the front crossmember TV.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention relates to a front crossmember (TV) installed in a front end (PV) of a motor vehicle (V) upstream of a device (EV), and comprising a cutout at a chosen location, and an insert (PR) securely fastened to said front crossmember (TV) at the cutout so as to be detached from said crossmember (TV) in the event of a front impact experienced by the motor vehicle (V) and causing the front crossmember (TV) to press against this device (EV) with an intensity greater than a predefined intensity, in order to allow a deformation of the front crossmember (TV) which minimises a force transmitted to the device (EV).

Description

DESCRIPTION DESCRIPTION

TITRE : TRAVERSE AVANT DE VÉHICULE AUTOMOBILE À DÉFORMATION PROGRAMMÉE LORS D’UN CHOC PAR L’AVANT TITLE: FRONT CROSSMEMBER OF A MOTOR VEHICLE WITH PROGRAMMED DEFORMATION DURING A FRONT IMPACT

Domaine technique de l’invention Technical field of the invention

[0001] La présente invention revendique la priorité de la demande française 2305958 déposée le 13 juin 2023 dont le contenu (texte, dessins et revendications) est ici incorporé par référence . L’invention concerne les véhicules automobiles, et plus précisément les traverses avant qui font partie des structures de certains de ces véhicules. [0001] The present invention claims priority from French application 2305958 filed on June 13, 2023, the content of which (text, drawings and claims) is incorporated herein by reference. The invention relates to motor vehicles, and more specifically to the front crossmembers which form part of the structures of some of these vehicles.

Etat de la technique State of the art

[0002] Certains véhicules automobiles comprennent une structure comportant dans une partie avant une traverse avant installée fixement suivant une direction transversale en amont d’un équipement. [0002] Certain motor vehicles comprise a structure comprising in a front part a front crossmember fixedly installed in a transverse direction upstream of equipment.

[0003] Lorsque le véhicule (automobile) subit un choc par l’avant, éventuellement avec un faible recouvrement (ou « small overlap »), il arrive que sa traverse avant soit enfoncée et vienne exercer une pression contre l’équipement situé en aval. Dans ce cas, la traverse avant transmet un effort à cet équipement, ce qui peut endommager ce dernier, possiblement sévèrement. A titre d’exemple, lorsque cet équipement est une machine motrice électrique faisant partie du groupe motopropulseur (ou GMP) du véhicule, l’endommagement peut consister en un court-circuit qui peut déclencher un incendie et/ou provoquer une électrocution. [0003] When the vehicle (automobile) suffers a front impact, possibly with a small overlap, its front crossmember may be depressed and exert pressure against the equipment located downstream. In this case, the front crossmember transmits a force to this equipment, which can damage the latter, possibly severely. For example, when this equipment is an electric motor forming part of the vehicle's powertrain (or GMP), the damage may consist of a short circuit which can start a fire and/or cause electrocution.

[0004] L’invention a donc notamment pour but d’améliorer la situation. [0004] The invention therefore aims in particular to improve the situation.

Présentation de l’invention Presentation of the invention

[0005] Elle propose notamment à cet effet une traverse avant destinée à être installée suivant une direction transversale dans une partie avant d’un véhicule automobile en amont d’un équipement de ce dernier. [0005] It proposes in particular for this purpose a front cross member intended to be installed in a transverse direction in a part front of a motor vehicle upstream of the latter's equipment.

[0006] Cette traverse avant se caractérise par le fait qu’elle comprend au moins une découpe en un endroit choisi, et au moins une pièce rapportée solidarisée fixement à elle au niveau de la découpe de manière à être désolidarisée d’elle en cas de choc par l’avant subi par le véhicule automobile et provoquant une pression de la traverse avant contre l’équipement d’une intensité supérieure à une intensité prédéfinie, afin de permettre une déformation de la traverse avant minimisant un effort transmis à l’équipement. [0006] This front crossmember is characterized by the fact that it comprises at least one cutout at a chosen location, and at least one attached part fixedly secured to it at the level of the cutout so as to be detached from it in the event of a front impact suffered by the motor vehicle and causing pressure of the front crossmember against the equipment of an intensity greater than a predefined intensity, in order to allow deformation of the front crossmember minimizing a force transmitted to the equipment.

[0007] Grâce à l’invention, la désolidarisation de la pièce rapportée de la traverse avant lorsque cette dernière est pressée suffisamment contre l’équipement permet de déformer de façon programmée la traverse avant au niveau de la zone comprenant la découpe, et ainsi de minimiser l’effort transmis à l’équipement pour minimiser (et si possible éviter) son endommagement. [0007] Thanks to the invention, the separation of the added part from the front cross member when the latter is pressed sufficiently against the equipment makes it possible to deform the front cross member in a programmed manner at the level of the zone comprising the cutout, and thus to minimize the force transmitted to the equipment in order to minimize (and if possible avoid) its damage.

[0008] La traverse avant selon l’invention peut comporter d’autres caractéristiques qui peuvent être prises séparément ou en combinaison, et notamment : [0008] The front cross member according to the invention may include other characteristics which may be taken separately or in combination, and in particular:

[0009] - sa pièce rapportée peut comprendre au moins deux trous traversants traversés respectivement par au moins deux éléments de couplage solidarisés fixement à elle de part et d’autre de la découpe sur une face supérieure ou inférieure, et propres à se casser lorsque l’intensité de la pression provoquée est supérieure à l’intensité prédéfinie ; [0009] - its attached part may comprise at least two through holes crossed respectively by at least two coupling elements fixedly secured to it on either side of the cutout on an upper or lower face, and capable of breaking when the intensity of the pressure caused is greater than the predefined intensity;

[0010] - en présence de la première option, chacun des trous traversants peut avoir une forme oblongue, avec un plus grand côté propre à être installé suivant une direction longitudinale du véhicule automobile, perpendiculaire à la direction transversale ; [0010] - in the presence of the first option, each of the through holes may have an oblong shape, with a larger side suitable for being installed in a longitudinal direction of the motor vehicle, perpendicular to the transverse direction;

[0011] - en présence de la première option, chacun des éléments de couplage peut être un rivet ou une vis ; [0012] - dans un premier mode de réalisation, la découpe peut être totale de manière à subdiviser la traverse avant en deux parties droite et gauche couplées entre elles par la pièce rapportée ; [0011] - in the presence of the first option, each of the coupling elements can be a rivet or a screw; [0012] - in a first embodiment, the cutting can be total so as to subdivide the front cross member into two right and left parts coupled together by the attached part;

[0013] - dans un second mode de réalisation, elle peut comprendre sur des faces supérieure et inférieure respectivement deux découpes partielles, définies l’une au-dessus de l’autre, et destinées à être ouvertes devant l’équipement ; [0013] - in a second embodiment, it can comprise on the upper and lower faces respectively two partial cutouts, defined one above the other, and intended to be opened in front of the equipment;

[0014] - sa pièce rapportée peut avoir une section en forme générale de U, de manière à entourer localement des faces supérieure, inférieure et avant que comprend la traverse avant ; [0014] - its attached part may have a generally U-shaped section, so as to locally surround the upper, lower and front faces which comprise the front crossmember;

[0015] - sa pièce rapportée peut être réalisée en acier ou en aluminium ; [0015] - its attached part can be made of steel or aluminum;

[0016] - sa pièce rapportée peut avoir une épaisseur supérieure ou égale à 1 ,5 mm. [0016] - its attached part may have a thickness greater than or equal to 1.5 mm.

[0017] L’invention propose également un véhicule automobile comprenant, d’une part, une partie avant comportant un équipement, et, d’autre part, une traverse avant du type de celle présentée ci-avant, et installée fixement dans cette partie avant suivant une direction transversale en amont de cet équipement. [0017] The invention also provides a motor vehicle comprising, on the one hand, a front part comprising equipment, and, on the other hand, a front crossmember of the type presented above, and fixedly installed in this front part in a transverse direction upstream of this equipment.

[0018] Par exemple, ce véhicule automobile peut constituer une voiture. [0018] For example, this motor vehicle may constitute a car.

Brève description des figures Brief description of the figures

[0019] D’autres caractéristiques et avantages de l’invention apparaîtront à l’examen de la description détaillée ci-après, et des dessins annexés (obtenus en CAO/DAO (« Conception Assistée par Ordinateur/Dessin Assisté par Ordinateur »)), sur lesquels : [0019] Other characteristics and advantages of the invention will appear on examining the detailed description below, and the attached drawings (obtained in CAD/CAM (“Computer Aided Design/Computer Aided Drawing”)), in which:

[0020] [Fig. 1] illustre schématiquement, dans une vue en perspective du côté avant, une partie d’une partie avant d’une structure de véhicule automobile comprenant un exemple de réalisation d’une traverse avant selon l’invention installée en amont d’une machine motrice électrique d’un GMP, et [0020] [Fig. 1] schematically illustrates, in a perspective view from the front side, a portion of a front portion of a motor vehicle structure comprising an exemplary embodiment of a front cross member according to the invention installed upstream of an electric motor of a GMP, and

[0021] [Fig. 2] illustre schématiquement, dans une vue en perspective du dessus, une partie de la traverse avant de la figure 1 . [0021] [Fig. 2] schematically illustrates, in a perspective view from above, a portion of the front crossmember of Figure 1.

Description détaillée de l’invention Detailed description of the invention

[0022] L’invention a notamment pour but de proposer une traverse avant TV destinée à équiper une partie avant PV d’une structure SV d’un véhicule automobile V en amont d’un équipement EV, et propre à se déformer de façon programmée lorsqu’elle est enfoncée contre cet équipement EV quand le véhicule automobile V subit un choc par l’avant, pour limiter la transmission d’effort à cet équipement EV. [0022] The invention aims in particular to propose a front crossmember TV intended to equip a front part PV of a structure SV of a motor vehicle V upstream of an EV equipment, and capable of deforming in a programmed manner when it is pressed against this EV equipment when the motor vehicle V suffers an impact from the front, to limit the transmission of force to this EV equipment.

[0023] Dans ce qui suit, on considère, à titre d’exemple non limitatif, que la traverse avant TV est destinée à faire partie d’un véhicule automobile V de type voiture. Mais l’invention n’est pas limitée à ce type de véhicule automobile. Elle concerne en effet tout véhicule automobile comprenant une partie avant devant comprendre une traverse avant devant au moins un équipement. [0023] In the following, it is considered, by way of non-limiting example, that the front crossmember TV is intended to be part of a motor vehicle V of the car type. However, the invention is not limited to this type of motor vehicle. It in fact concerns any motor vehicle comprising a front part which must comprise a front crossmember in front of at least one piece of equipment.

[0024] Sur les figures 1 et 2 la direction X est la direction longitudinale du véhicule (automobile) V, laquelle est sensiblement parallèle aux côtés latéraux (ou longitudinaux) comportant les portières latérales, la direction Y est la direction transversale du véhicule V, laquelle est perpendiculaire à la direction longitudinale X, et la direction Z est la direction verticale du véhicule V, laquelle est perpendiculaire aux directions longitudinale X et transversale Y. [0024] In Figures 1 and 2, the X direction is the longitudinal direction of the vehicle (automobile) V, which is substantially parallel to the lateral (or longitudinal) sides comprising the side doors, the Y direction is the transverse direction of the vehicle V, which is perpendicular to the longitudinal direction X, and the Z direction is the vertical direction of the vehicle V, which is perpendicular to the longitudinal X and transverse Y directions.

[0025] Dans ce qui précède et ce qui suit la notion « d’avant » est définie par rapport à l’extrémité avant du véhicule, et la notion « d’arrière » est définie par rapport à l’extrémité arrière du véhicule (opposée à l’extrémité avant). Par conséquent, la partie avant d’un élément est (destinée à être) orientée vers l’extrémité avant du véhicule, tandis que la partie arrière de cet élément est (destinée à être) orientée vers l’extrémité arrière du véhicule. [0026] Par ailleurs, dans ce qui précède et ce qui suit les notions « d’amont » et « d’aval » sont définies par rapport à l’extrémité avant du véhicule V. Par conséquent, un premier élément situé en aval d’un second élément est plus éloigné de l’extrémité avant du véhicule V que ce second élément, et dans ce cas ce second élément est situé en amont du premier élément. [0025] In the foregoing and the following, the concept of "front" is defined in relation to the front end of the vehicle, and the concept of "rear" is defined in relation to the rear end of the vehicle (opposite the front end). Consequently, the front part of an element is (intended to be) oriented towards the front end of the vehicle, while the rear part of this element is (intended to be) oriented towards the rear end of the vehicle. [0026] Furthermore, in the above and the following, the concepts of “upstream” and “downstream” are defined relative to the front end of the vehicle V. Consequently, a first element located downstream of a second element is further from the front end of the vehicle V than this second element, and in this case this second element is located upstream of the first element.

[0027] On a schématiquement illustré au moins partiellement sur la figure 1 une partie d’une partie avant d’une structure SV d’un véhicule (automobile) V comprenant un exemple de réalisation d’une traverse avant TV selon l’invention, installée en amont d’un équipement EV devant être protégé. [0027] FIG. 1 schematically illustrates at least partially a part of a front part of a structure SV of a vehicle (automobile) V comprising an exemplary embodiment of a front crossmember TV according to the invention, installed upstream of EV equipment to be protected.

[0028] Dans l’exemple illustré non limitativement sur la figure 1 l’équipement EV est une machine motrice électrique faisant partie du groupe motopropulseur (ou GMP) du véhicule V. Mais la traverse avant TV pourrait être installée en amont d’autres équipements devant faire l’objet d’un transfert d’effort limité. [0028] In the example illustrated non-limitingly in Figure 1, the EV equipment is an electric motor forming part of the powertrain (or GMP) of the vehicle V. However, the front crossmember TV could be installed upstream of other equipment requiring limited force transfer.

[0029] Comme illustré sur la figure 1 , la traverse avant TV est propre à être installée suivant la direction transversale Y du véhicule V dans la partie avant PV de la structure SV de ce dernier (V), en amont de l’équipement EV. [0029] As illustrated in Figure 1, the front cross member TV is suitable for being installed in the transverse direction Y of the vehicle V in the front part PV of the structure SV of the latter (V), upstream of the EV equipment.

[0030] Cette traverse avant TV comprend au moins une découpe DT en un endroit choisi, et au moins une pièce rapportée PR. Comme illustré au moins partiellement sur les figures 1 et 2, cette traverse avant TV peut avoir une section en forme générale de rectangle. [0030] This front TV crossmember comprises at least one cutout DT at a chosen location, and at least one insert PR. As illustrated at least partially in FIGS. 1 and 2, this front TV crossmember may have a generally rectangular section.

[0031] On entend ici par « découpe (DT) » une absence volontaire de matière qui peut être totale ou partielle. [0031] Here, the term “cutting (DT)” means a voluntary absence of material which may be total or partial.

[0032] Comme illustré au moins partiellement sur les figures 1 et 2, la (chaque) pièce rapportée PR est solidarisée fixement à la traverse avant TV au niveau de la (d’une) découpe DT. Cette solidarisation fixe est réalisée de manière à permettre la désolidarisation de la pièce rapportée PR de la traverse avant TV en cas de choc par l’avant subi par le véhicule V et provoquant une pression de la traverse avant TV contre l’équipement EV d’une intensité qui est supérieure à une intensité prédéfinie. Cette désolidarisation est destinée à permettre une déformation (programmée) de la traverse avant TV qui minimise l’effort transmis par cette dernière (TV) à l’équipement EV. [0032] As illustrated at least partially in FIGS. 1 and 2, the (each) insert PR is fixedly secured to the front crossmember TV at the (one) cutout DT. This fixed securing is carried out so as to allow the detachment of the insert PR from the front crossmember TV in the event of a front impact suffered by the vehicle V and causing pressure on the front crossmember TV. against the EV equipment of an intensity which is higher than a predefined intensity. This decoupling is intended to allow a (programmed) deformation of the front TV cross member which minimizes the force transmitted by the latter (TV) to the EV equipment.

[0033] En d’autres termes, lorsque la traverse avant TV est enfoncée vers l’arrière lors d’un choc avant jusqu’à être pressée contre l’équipement EV, la pièce rapportée PR va se désolidariser de la traverse avant TV si l’intensité de la pression exercée sur cet équipement EV est strictement supérieure à l’intensité prédéfinie. La zone de la traverse avant TV comprenant la découpe DT, et jusqu’alors consolidée par la pièce rapportée PR, peut alors avantageusement se déformer au niveau de cette découpe DT et ainsi permettre une minimisation de l’effort qui est transmis à l’équipement EV de manière à minimiser (et si possible éviter) son endommagement. Il en résulte un renforcement de la sécurité passive du véhicule. On comprendra que lorsque l’équipement EV est électrique (ou électronique), comme c’est notamment le cas lorsqu’il s’agit d’une machine motrice électrique, cela permet d’éviter la création d’un court-circuit et/ou de provoquer une électrocution. [0033] In other words, when the front crossmember TV is pushed backwards during a front impact until it is pressed against the EV equipment, the PR insert will separate from the front crossmember TV if the intensity of the pressure exerted on this EV equipment is strictly greater than the predefined intensity. The area of the front crossmember TV comprising the cutout DT, and until then consolidated by the PR insert, can then advantageously deform at the level of this cutout DT and thus allow a minimization of the force which is transmitted to the EV equipment so as to minimize (and if possible avoid) its damage. This results in a reinforcement of the passive safety of the vehicle. It will be understood that when the EV equipment is electric (or electronic), as is particularly the case when it is an electric motor, this makes it possible to avoid the creation of a short circuit and/or to cause an electrocution.

[0034] Par exemple, et comme illustré non limitativement et au moins partiellement sur les figures 1 et 2, la pièce rapportée PR peut comprendre au moins deux trous traversants TT qui sont traversés respectivement par au moins deux éléments de couplage EC solidarisés fixement à la traverse avant TV de part et d’autre de la (chaque) découpe DT sur une face supérieure FS ou inférieure Fl qu’elle (TV) comprend. Ces éléments de couplage EC sont agencés de manière à se casser lorsque l’intensité de la pression provoquée par la traverse avant TV sur l’équipement EV est supérieure à l’intensité prédéfinie. On comprendra que l’impact de la traverse avant TV sur l’équipement EV provoque un sectionnement des éléments de couplage EC lorsque son intensité est supérieure à l’intensité prédéfinie. [0035] On notera que dans l’exemple illustré non limitativement sur les figures 1 et 2 les deux trous traversants TT sont définis dans des sous- parties SP1 et SP2 supérieures de la pièce rapportée PR qui sont placées au-dessus de la face supérieure FS de la traverse avant TV. Mais dans une variante de réalisation non illustrée, les deux trous traversants TT pourraient être définis dans des sous-parties inférieures de la pièce rapportée PR qui sont placées en-dessous de la face inférieure Fl de la traverse avant TV. [0034] For example, and as illustrated non-limitingly and at least partially in FIGS. 1 and 2, the insert PR may comprise at least two through holes TT which are crossed respectively by at least two coupling elements EC fixedly secured to the front crosspiece TV on either side of the (each) cutout DT on an upper face FS or lower face Fl which it (TV) comprises. These coupling elements EC are arranged so as to break when the intensity of the pressure caused by the front crosspiece TV on the equipment EV is greater than the predefined intensity. It will be understood that the impact of the front crosspiece TV on the equipment EV causes a sectioning of the coupling elements EC when its intensity is greater than the predefined intensity. [0035] It will be noted that in the example illustrated non-limitingly in FIGS. 1 and 2, the two through holes TT are defined in upper sub-parts SP1 and SP2 of the insert PR which are placed above the upper face FS of the front crosspiece TV. But in an alternative embodiment not illustrated, the two through holes TT could be defined in lower sub-parts of the insert PR which are placed below the lower face Fl of the front crosspiece TV.

[0036] Egalement par exemple, et comme illustré non limitativement sur la figure 2, chacun des éléments de couplage EC peut être un rivet ou une vis. On notera que lorsque l’on utilise des vis EC, une seule est suffisante dans chaque trou traversant TT, comme illustré sur la figure 2. Lorsque l’on utilise des rivets EC, il est possible d’en utiliser un ou deux dans chaque trou traversant TT. [0036] Also for example, and as illustrated non-limitingly in FIG. 2, each of the coupling elements EC can be a rivet or a screw. It will be noted that when using EC screws, only one is sufficient in each through hole TT, as illustrated in FIG. 2. When using EC rivets, it is possible to use one or two in each through hole TT.

[0037] Egalement par exemple, et comme illustré non limitativement sur les figures 1 et 2, chacun des trous traversants TT peut avoir une forme oblongue, avec un plus grand côté propre à être installé suivant la direction longitudinale X du véhicule V. Cette forme oblongue est avantageuse car elle ne permet pas de jeu suivant la direction transversale Y, mais permet un petit jeu suivant la direction longitudinale X qui favorise le sectionnement des éléments de couplage EC lors de l’impact avec l’équipement EV. [0037] Also for example, and as illustrated non-limitingly in FIGS. 1 and 2, each of the through holes TT can have an oblong shape, with a larger side suitable for being installed in the longitudinal direction X of the vehicle V. This oblong shape is advantageous because it does not allow any play in the transverse direction Y, but allows a small amount of play in the longitudinal direction X which promotes the cutting of the coupling elements EC upon impact with the equipment EV.

[0038] On notera également que dans une variante la solidarisation de la pièce rapportée PR à la traverse avant TV pourrait se faire au moyen de points de soudure définis de manière à être « détruits » lorsque l’intensité de la pression provoquée par la traverse avant TV sur l’équipement EV est supérieure à l’intensité prédéfinie. On comprendra que dans ce cas la pièce rapportée PR n’a pas besoin de comprendre de trous traversants et d’éléments de couplage EC, ces derniers (EC) étant remplacés par les points de soudure. [0038] It will also be noted that in a variant the securing of the PR insert to the front cross member TV could be done by means of weld points defined so as to be “destroyed” when the intensity of the pressure caused by the front cross member TV on the EV equipment is greater than the predefined intensity. It will be understood that in this case the PR insert does not need to include through holes and EC coupling elements, the latter (EC) being replaced by the weld points.

[0039] Comme indiqué plus haut, la (chaque) découpe DT peut être totale ou partielle. [0040] Dans l’exemple illustré non limitativement et au moins partiellement sur les figures 1 et 2 la traverse avant TV comprend une unique découpe DT totale, et donc qui la subdivise en deux parties droite P1 et gauche P2 qui sont couplées entre elles par la pièce rapportée PR. [0039] As indicated above, the (each) DT cut can be total or partial. [0040] In the example illustrated non-limitingly and at least partially in FIGS. 1 and 2, the front crossmember TV comprises a single total cutout DT, and therefore which subdivides it into two right parts P1 and left P2 which are coupled together by the added part PR.

[0041] On notera que dans l’exemple illustré non limitativement sur la figure 1 la découpe DT est décentrée vers la droite (par rapport à la zone médiane de la traverse avant TV) car l’équipement EV est installé dans la partie avant PV dans une position décentrée vers la droite. Mais l’endroit choisi où est définie une découpe DT dépend de la position transversale où est située la zone de l’équipement EV pouvant être impactée en premier lors de l’enfoncement de la traverse avant TV. [0041] It will be noted that in the example illustrated non-limitingly in FIG. 1, the cutout DT is off-center to the right (relative to the median zone of the front crossmember TV) because the EV equipment is installed in the front part PV in an off-center position to the right. But the chosen location where a cutout DT is defined depends on the transverse position where the zone of the EV equipment that can be impacted first when the front crossmember TV is driven in is located.

[0042] Dans une variante de réalisation non illustrée, la traverse avant TV peut comprendre sur des faces supérieure FS et inférieure Fl opposées respectivement deux découpes DT partielles. Dans ce cas, ces deux découpes DT partielles sont définies l’une au-dessus de l’autre, et destinées à être ouvertes devant (ou du côté de) l’équipement EV afin de faciliter la déformation de la traverse avant TV lors de l’impact avec désolidarisation de la pièce rapportée PR. [0042] In a variant embodiment not illustrated, the front cross member TV may comprise on opposite upper FS and lower Fl faces respectively two partial cutouts DT. In this case, these two partial cutouts DT are defined one above the other, and intended to be open in front of (or on the side of) the EV equipment in order to facilitate the deformation of the front cross member TV during the impact with separation of the PR insert.

[0043] On notera également, comme illustré non limitativement et au moins partiellement sur les figures 1 et 2, que la pièce rapportée PR peut avoir une section en forme générale de U. Dans ce cas, elle entoure localement les faces supérieure FS, inférieure Fl et avant FV que comprend la traverse avant TV. La face avant FV relie entre elles les faces supérieure FS et inférieure Fl, et est opposée à l’équipement EV. [0043] It will also be noted, as illustrated non-limitingly and at least partially in FIGS. 1 and 2, that the PR insert may have a generally U-shaped section. In this case, it locally surrounds the upper FS, lower FL and front FV faces that the front crosspiece TV comprises. The front FV face connects the upper FS and lower FL faces together, and is opposite the EV equipment.

[0044] Cette section en forme générale de U est actuellement préférée car elle permet de consolider efficacement et suffisamment la traverse avant TV au niveau d’au moins une découpe DT, pour qu’elle assure sa fonction au sein du véhicule V en l’absence de choc subi. Mais une section en forme générale de L pourrait être envisagée. [0045] On notera que dans l’exemple illustré non limitativement sur la figure 1 la traverse avant TV ne comprend qu’une seule zone de découpe DT. Mais elle pourrait comprendre plusieurs (au moins deux) découpes DT en au moins deux endroits choisis distants suivant la direction transversale Y. Dans ce cas, elle (TV) comprend plusieurs (au moins deux) pièces rapportées PR. [0044] This generally U-shaped section is currently preferred because it allows the front crossmember TV to be effectively and sufficiently consolidated at at least one cutout DT, so that it performs its function within the vehicle V in the absence of an impact. However, a generally L-shaped section could be envisaged. [0045] It will be noted that in the example illustrated non-limitingly in FIG. 1, the front cross member TV comprises only one cutting zone DT. But it could comprise several (at least two) cutouts DT in at least two chosen locations distant along the transverse direction Y. In this case, it (TV) comprises several (at least two) added parts PR.

[0046] On notera également que dans l’exemple illustré non limitativement sur la figure 2 (à découpe DT totale) la pièce rapportée PR est conformée au moins dans sa partie supérieure de manière à comporter deux décrochements DC vers le bas. Ainsi, la sous-partie centrale SP3 de la partie supérieure de la pièce rapportée PR est installée dans la découpe DT à un niveau vertical (suivant la direction verticale Z) qui est légèrement inférieur au niveau vertical où sont installées les sous-parties droite SP1 et gauche SP2 (reliées par cette sous-partie centrale SP3). Cet agencement permet notamment d’améliorer la précision du positionnement de la pièce rapportée PR par rapport à la traverse avant TV au niveau d’une découpe DT totale, et de définir une espèce de continuité des parties droite P1 et gauche P2 de la traverse avant TV via la sous-partie centrale SP3. [0046] It will also be noted that in the example illustrated non-limitingly in FIG. 2 (with total DT cutout) the insert PR is shaped at least in its upper part so as to include two downward DC recesses. Thus, the central sub-part SP3 of the upper part of the insert PR is installed in the DT cutout at a vertical level (in the vertical direction Z) which is slightly lower than the vertical level where the right SP1 and left SP2 sub-parts are installed (connected by this central sub-part SP3). This arrangement makes it possible in particular to improve the precision of the positioning of the insert PR relative to the front crossmember TV at the level of a total DT cutout, and to define a kind of continuity of the right P1 and left P2 parts of the front crossmember TV via the central sub-part SP3.

[0047] On notera également que la pièce rapportée PR peut être réalisée en acier ou en aluminium. [0047] It will also be noted that the PR insert can be made of steel or aluminum.

[0048] On notera également que la pièce rapportée PR peut, par exemple, avoir une épaisseur supérieure ou égale à 1 ,5 mm. A titre d’exemple, cette épaisseur peut être comprise entre 2 mm et 3 mm. On notera également que la pièce rapportée PR peut, par exemple, avoir une épaisseur sensiblement identique à celle de la traverse avant TV. [0048] It will also be noted that the insert PR may, for example, have a thickness greater than or equal to 1.5 mm. For example, this thickness may be between 2 mm and 3 mm. It will also be noted that the insert PR may, for example, have a thickness substantially identical to that of the front crossmember TV.

Claims

REVENDICATIONS [Revendication 1] Traverse avant (TV) propre à être installée suivant une direction transversale dans une partie avant (PV) d’un véhicule automobile (V) en amont d’un équipement (EV) de ce dernier (V), caractérisée en ce qu’elle comprend i) au moins une découpe (DT) en un endroit choisi, et ii) au moins une pièce rapportée (PR) solidarisée fixement à elle (TV) au niveau de ladite découpe (DT) de manière à être désolidarisée d’elle (TV) en cas de choc par l’avant subi par ledit véhicule automobile (V) et provoquant une pression de ladite traverse avant (TV) contre ledit équipement (EV) d’une intensité supérieure à une intensité prédéfinie, afin de permettre une déformation de ladite traverse avant (TV) minimisant un effort transmis audit équipement (EV). [Claim 1] Front crossmember (TV) suitable for being installed in a transverse direction in a front part (PV) of a motor vehicle (V) upstream of equipment (EV) of the latter (V), characterized in that it comprises i) at least one cutout (DT) at a chosen location, and ii) at least one added part (PR) fixedly secured to it (TV) at the level of said cutout (DT) so as to be detached from it (TV) in the event of a front impact suffered by said motor vehicle (V) and causing pressure of said front crossmember (TV) against said equipment (EV) of an intensity greater than a predefined intensity, in order to allow deformation of said front crossmember (TV) minimizing a force transmitted to said equipment (EV). [Revendication 2] Traverse avant selon la revendication 1 , caractérisée en ce que ladite pièce rapportée (PR) comprend au moins deux trous traversants (TT) traversés respectivement par au moins deux éléments de couplage (EC) solidarisés fixement à elle (TV) de part et d’autre de ladite découpe (DT) sur une face supérieure (FS) ou inférieure (Fl), et propres à se casser lorsque ladite intensité de la pression provoquée est supérieure à ladite intensité prédéfinie. [Claim 2] Front cross member according to claim 1, characterized in that said insert (PR) comprises at least two through holes (TT) crossed respectively by at least two coupling elements (EC) fixedly secured to it (TV) on either side of said cutout (DT) on an upper (FS) or lower (Fl) face, and capable of breaking when said intensity of the pressure caused is greater than said predefined intensity. [Revendication 3] Traverse avant selon la revendication 2, caractérisée en ce que chacun desdits trous traversants (TT) a une forme oblongue, avec un plus grand côté propre à être installé suivant une direction longitudinale dudit véhicule automobile (V) perpendiculaire à ladite direction transversale. [Claim 3] Front cross member according to claim 2, characterized in that each of said through holes (TT) has an oblong shape, with a larger side suitable for being installed in a longitudinal direction of said motor vehicle (V) perpendicular to said transverse direction. [Revendication 4] Traverse avant selon la revendication 2 ou 3, caractérisée en ce que chacun desdits éléments de couplage (EC) est un rivet ou une vis. [Claim 4] Front cross member according to claim 2 or 3, characterized in that each of said coupling elements (EC) is a rivet or a screw. [Revendication 5] Traverse avant selon l’une des revendications 1 à 4, caractérisée en ce que ladite découpe (DT) est totale de manière à la subdiviser en deux parties droite (P1 ) et gauche (P2) couplées entre elles par ladite pièce rapportée (PR). [Claim 5] Front cross member according to one of claims 1 to 4, characterized in that said cutout (DT) is total so as to subdivide it into two right (P1) and left (P2) parts coupled together by said added part (PR). [Revendication 6] Traverse avant selon l’une des revendications 1 à 4, caractérisée en ce qu’elle comprend sur des faces supérieure (FS) et inférieure (Fl) respectivement deux découpes (DT) partielles, définies l’une au-dessus de l’autre, et destinées à être ouvertes devant ledit équipement (EV). [Claim 6] Front cross member according to one of claims 1 to 4, characterized in that it comprises on upper (FS) and lower (Fl) faces respectively two partial cutouts (DT), defined one above the other, and intended to be open in front of said equipment (EV). [Revendication 7] Traverse avant selon l’une des revendications 1 à 6, caractérisée en ce que ladite pièce rapportée (PR) a une section en forme générale de U, de manière à entourer localement des faces supérieure (FS), inférieure (Fl) et avant (FV) que comprend ladite traverse avant (TV). [Claim 7] Front cross member according to one of claims 1 to 6, characterized in that said insert (PR) has a generally U-shaped section, so as to locally surround upper (FS), lower (Fl) and front (FV) faces that said front crossmember (TV) comprises. [Revendication 8] Traverse avant selon l’une des revendications 1 à 7, caractérisée en ce que ladite pièce rapportée (PR) est réalisée en acier ou en aluminium. [Claim 8] Front cross member according to one of claims 1 to 7, characterized in that said added part (PR) is made of steel or aluminum. [Revendication 9] Traverse avant selon l’une des revendications 1 à 8, caractérisée en ce que ladite pièce rapportée (PR) a une épaisseur supérieure ou égale à 1 ,5 mm. [Revendication 10] Véhicule automobile (V) comprenant une partie avant (PV) comportant un équipement (EV), caractérisé en ce qu’il comprend en outre une traverse avant (TV) selon l’une des revendications précédentes, installée fixement dans ladite partie avant (PV) suivant une direction transversale, en amont dudit équipement (EV). [Claim 9] Front cross member according to one of claims 1 to 8, characterized in that said added part (PR) has a thickness greater than or equal to 1.5 mm. [Claim 10] Motor vehicle (V) comprising a front part (PV) comprising equipment (EV), characterized in that it further comprises a front cross member (TV) according to one of the preceding claims, fixedly installed in said front part (PV) in a transverse direction, upstream of said equipment (EV).
PCT/FR2024/050599 2023-06-13 2024-05-06 Front crossmember of a motor vehicle with programmed deformation during a front impact Ceased WO2024256763A1 (en)

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FR2305958A FR3149853A1 (en) 2023-06-13 2023-06-13 FRONT CROSSMEMBER OF MOTOR VEHICLE WITH PROGRAMMED DEFORMATION DURING A FRONT IMPACT
FRFR2305958 2023-06-13

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2305958A1 (en) 1975-04-01 1976-10-29 Optische Ind De Oude Delft Nv MAMMOGRAPHY
US4850638A (en) * 1986-06-05 1989-07-25 Audi A.G. Cross-beam for a motor vehicle body
EP0908374B1 (en) * 1997-10-09 2002-06-05 Automobiles Peugeot Means for fixing a front end to the forward structure of a motor vehicle
US20220194472A1 (en) * 2019-04-04 2022-06-23 Audi Ag Deformation Device For A Motor Vehicle, And Motor Vehicle Comprising A Deformation Device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2305958A1 (en) 1975-04-01 1976-10-29 Optische Ind De Oude Delft Nv MAMMOGRAPHY
US4850638A (en) * 1986-06-05 1989-07-25 Audi A.G. Cross-beam for a motor vehicle body
EP0908374B1 (en) * 1997-10-09 2002-06-05 Automobiles Peugeot Means for fixing a front end to the forward structure of a motor vehicle
US20220194472A1 (en) * 2019-04-04 2022-06-23 Audi Ag Deformation Device For A Motor Vehicle, And Motor Vehicle Comprising A Deformation Device

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