EP3164317A1 - Traverse transversale de renfort améliorée a rupture programmée - Google Patents
Traverse transversale de renfort améliorée a rupture programméeInfo
- Publication number
- EP3164317A1 EP3164317A1 EP15745520.5A EP15745520A EP3164317A1 EP 3164317 A1 EP3164317 A1 EP 3164317A1 EP 15745520 A EP15745520 A EP 15745520A EP 3164317 A1 EP3164317 A1 EP 3164317A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- floor
- vehicle
- cross member
- underbody
- lateral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- B62D21/157—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 for side impacts
-
- 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
- B62D25/20—Floors or bottom sub-units
Definitions
- the invention relates to a vehicle floor cross member for reinforcing the floor in the event of a side impact.
- the body structure of a vehicle is designed to absorb as much energy as possible during an impact.
- the cockpit In the case of a side impact, the cockpit must remain relatively preserved to protect its occupants.
- the motor vehicles comprise at least one transverse reinforcing cross member located on the floor of the vehicle, on the side of the passenger compartment. This crossbar extends from one lateral side of the vehicle to the other lateral side, substantially perpendicular to the longitudinal axis of the vehicle.
- the current trend is to strengthen the reinforcing beam located against the floor of the vehicle.
- patent EP0799757 discloses a floor reinforcing crossbar for lateral impact, extending between each side of the vehicle.
- Said reinforcing beam has a U-shaped section, the ends of the branches of the "U" being fixed on the floor surface.
- the cross member is disposed on the face of the floor facing the side of the passenger compartment of the vehicle.
- the crossbar is directly attached to the side rails of the vehicle.
- the floor of the vehicle forms a tunnel extending along the floor along the longitudinal axis of the vehicle, in the median axis of said vehicle. This tunnel creates an elevated part of the passenger compartment floor. At the level of said tunnel, the height of the branches of the U of the cross section of the reinforcement is reduced in order to follow the altitude difference of the tunnel.
- This solution has the advantage of offering good impact resistance.
- a reinforcement structure of a vehicle floor creates a large volume structure in the passenger compartment. Passenger comfort, including the space available for the feet, is degraded.
- this solution increases the mass of the vehicle.
- the present invention aims to strengthen the floor to the side impact. More particularly, the invention aims to improve the lateral impact resistance of a vehicle floor having a central tunnel. Another objective is to avoid deformation of the floor in the part under each front seat in case of side impact. Another objective is to lighten the structure of the vehicle without degrading its resistance to side impact. Another objective is to improve the lateral impact resistance of the vehicle structure without impacting the passenger compartment volume, particularly at the feet of the rear passengers.
- a vehicle underbody comprising a floor with a central tunnel extending in a longitudinal direction of the floor and forming an elevation of said floor on the passenger side of the vehicle, and a cross member extending between the edges side of said floor in a transverse direction perpendicular to the longitudinal direction, the side edges being the edges of the floor along the side edges of the vehicle when the floor is installed on the vehicle, characterized in that said cross is fixed against the outer surface of the floor located on the outside of the vehicle when the floor is installed on the vehicle, and said cross has a segment in the middle of its length in a curved " ⁇ " shape arranged to fit into said tunnel.
- the cross-member can thus strengthen the tunnel of the floor.
- the tunnel in case of side impact on a vehicle with a floor with a central tunnel, the tunnel creates a fragile area that will quickly deform, and cause a deformation of the entire floor. The width of the passenger compartment will decrease.
- the transom strengthens the tunnel's resistance in the event of a lateral impact, and retards its deformation, while maintaining a space in the tunnel for the passage of elements.
- vehicle technique such as an exhaust pipe, pipes or a transmission shaft.
- this " ⁇ " shape creates a less resistant zone than the rest of the body, because of the curvature.
- each of the lateral arms of the crossbar is generally located substantially at the floor area on which is placed one of the front seats.
- the fragility created by the " ⁇ " shape makes it possible to prevent one of the arms from breaking or deforming, and thus to avoid reducing the area of the floor on which a seat is fixed.
- the arrangement on the outer surface has the advantage of not encroaching on the volume of the passenger compartment of the vehicle. In particular, this arrangement avoids creating volumes on the vehicle floor vehicle side. The comfort of the passengers is not degraded.
- the cross member comprises at least one body of composite material.
- the use of a composite material makes it possible to make a cross body lighter than a steel cross member, while being rigid.
- the crossmember comprises deformable end pieces fixed at least at two ends of said body, said end pieces being intended to connect said ends of the body to elements of the lateral structure of the vehicle, in particular to the side members.
- the composite materials may have low deformation capacity, in particular in flexion or torsion when they are subjected at the same time to a compressive force, the deformable tips placed at the ends of the body and intended to connect the cross member to the lateral structure of the vehicle, advantageously allow to pass essentially only compression forces in the body. Indeed, said end pieces will be absorbed by deforming the forces other than compression forces, such as bending forces related to the rotation of the lateral structure of the vehicle elements on which the cross is connected. The risks that the body of composite material is broken down are thus reduced.
- the body is configured so that its ends are not in contact with the elements of the lateral structure of the vehicle, and said ends of the body are connected to the elements of the lateral structure of the vehicle the end pieces.
- the cross member of composite material is lightweight, resistant, and accepts the deformations at these connections with the structural elements of the vehicle.
- Another advantage is that the end pieces allow to absorb some of the forces of the shock in the transverse direction of the vehicle. Thus, in the event of a side impact, part of the energy of the shock is dissipated in the deformation of said end pieces. The efforts transmitted to the body are diminished.
- the tips are made of metallic material. in order to have good mechanical strength and good ability to deform without breaking.
- the end pieces may be fixed by gluing, riveting, or any other fixing means known to those skilled in the art.
- the tips can be made of steel for easier shaping or for a low cost, or aluminum to reduce the weight.
- the end-pieces comprise zones of rupture programmed so as to allow a programmed deformation of said end-pieces.
- the deformation of the tip is better controlled.
- Several programmed break zones can be applied.
- surfaces of the cross member may have an "accordion" type shape to allow controlled deformation of the tip.
- the floor is made of composite material.
- the cross member comprises at least one extension arranged to extend in a direction parallel to the floor and different from the direction substantially perpendicular to the longitudinal direction of the floor.
- the cross member reinforces the floor in the event of a side impact, and in the event of a frontal impact, the extension reinforces the floor around said cross-member opposite forces perpendicular to the floor by distributing said forces over a larger area.
- the floor is more resistant to these drawing efforts through cooperation with said cross which distributes these draw forces on a plus large floor area
- said extension is preferably positioned at least in part at the segment following the curve shape in " ⁇ ".
- the extension makes it possible to increase the inertia of the segment of the central part of the crossbar in the form of " ⁇ ", and thus to allow said crossmember to spend more effort in the segment traversing said shape in " ⁇ ".
- the extension reinforces this central part of the crossbar in the form of " ⁇ ".
- the width of the extension that is to say the dimension of the extension in a direction perpendicular to the longitudinal direction of the floor, is greater than the length of the segment of the body. shape in " ⁇ ", that is to say its dimension in the same longitudinal direction.
- the invention also relates to a vehicle comprising a base as described above and whose cross member has an extension, and which comprises a heel board connected to the floor, the extension extending to the connection of the floor with said board. heel.
- this arrangement allows to transfer the pulling forces from the rear fasteners of the front seats on the floor to the heel board.
- the risk of deformation or even tearing of the floor are reduced.
- the safety of the floor is improved.
- the invention also relates to a method of manufacturing a vehicle with a base whose cross-member comprises at least one body and end pieces, the method comprising at least the steps
- the manufacturing process will follow the steps in this order: fixing the body on the floor, laying and fixing the floor on the edges of the beams for receiving said floor, the edges of the side members being oriented towards the roof of the vehicle so the floor is placed on said longitudinal members, and mounting of the end pieces between the body and said longitudinal members.
- the end pieces can in addition be fixed to the floor.
- FIG. 1 is a perspective view of a body of a cross member according to one embodiment of the invention, without the end pieces.
- - Fig. 2 is a view from below of a vehicle base comprising a floor with a tunnel and equipped with a cross member comprising a body as described in fig.l and end caps.
- FIG. 3 is a view of one end of the body equipped with a nozzle according to a particular embodiment of the invention.
- - Fig. 4 is a view of a vehicle underbody comprising a floor and a cross member whose body has an extension directed rearward of the vehicle floor, in the central zone of said body.
- Fig. 1 shows a body 11 of a vehicle floor reinforcement cross member 1, intended to be placed on the exterior side face of a vehicle floor which comprises a central tunnel.
- the central tunnel extends in a longitudinal direction.
- the body 11 has a substantially U-shaped section, and has a curved area 13, forming a " ⁇ ", along a segment substantially at the middle of the length of said body 11, the length of said body 11 being its dimension in the direction given by these two ends, intended to follow the shape of the tunnel of the floor forming a part convex side of the vehicle.
- the ends of the shape of the "U" section of the body 11 has fallen edges forming surfaces arranged to be pressed against the floor and intended to receive floor fastening means.
- the body is preferably made of composite material, for example in a material called composite SMC which is a thermoset semi-product consisting of a sheet of cut or continuous son impregnated with a mixture of polyester resin, fillers and various adjuvants. It is fixed by gluing to the floor.
- Other fastening means may be used, such as a fastening by rivet or, in the case of a floor made of composite material, by welding by melting the resin of the composite material of the body 11 and that of the floor 2, then plating the two pieces against each other until the material cools.
- Other materials may be used to make the body 1, such as steel or aluminum sheet.
- the curved area 13 forming an " ⁇ " of the body 1 can be arranged in a plane parallel to the floor plane of the vehicle when the body is fixed on the floor.
- the "U" shape of the section of the body 11 corresponds to a shape comprising two parallel branches interconnected by a base. Said base of the "U” shape is preferably of substantially planar shape, and comprises in places
- the base of the "U" of the section of the body 11 may comprise corrugations in the direction of the length of the body 11, that is to say along the axis transverse of the vehicle when the body 11 is mounted on said vehicle.
- Other forms may be considered
- the cross member 1 can be positioned on the floor of the passenger side of the vehicle.
- Fig. 2 shows the body 11 mounted on a floor 2 of the vehicle 3 and the floor 2 positioned between the two longitudinal members 31.
- the length of the body 11 is less than the distance between the two longitudinal members 31.
- the body 11 is fixed to the floor 2 before the mount the floor 2 on the vehicle.
- the floor 2 is installed on the vehicle so as to be supported by the longitudinal members 31, the body 1 passing between the longitudinal members 31.
- the floor 2 equipped with the cross member 1 forms a base.
- the length of the body 11 will be chosen so as to leave a space between each end of the body 11 and each spar 31.
- a tip 12 is fixed by a side to one end of the body 11 and the other to one of the longitudinal members 31.
- the body 11 and the end pieces 12 form the cross member 1 which thus extends between the two longitudinal members 31 along the transverse axis of the vehicle.
- the cross member 1 is positioned to be substantially vis-à-vis with the middle legs of the vehicle structure 3 so as to recover the forces in case of side impact.
- Other positions along the longitudinal axis of the vehicle 3 when the floor 2 is installed on a vehicle can be envisaged.
- the end pieces 12 are preferably arranged so as to be deformable in the event of a side impact. They can be made for example of sheet steel.
- the end pieces 12 may have shapes with programmed deformation zones, such as for example a shape having accordion edges as illustrated in FIG. 3, to control the deformation of the tips 12. If the body 11 is made of composite material, it has a good resistance to compressive forces. On the other hand, the resistance of said body 11 is bad when, in addition to the compression forces, forces in different directions to these compressive forces, such as bending or twisting, act on said body 11.
- the floor 2 of FIG. 2 has a central tunnel.
- the body 11, fixed on the outer surface of the floor 2 relative to the vehicle 3, comprises a central zone 13 traversing an " ⁇ " shape so as to follow the central tunnel, the two parts of the body 11 around the central zone 13 forming arms 14.
- This form improves the rigidity of the floor 2 at the tunnel in case of side impact. It also makes it possible to create a zone of rupture programmed thanks to this form in " ⁇ " when the forces become too important, and thus impose that the body 11 breaks or is deformed in the central zone 13 and not at one of the arms 14.
- the body 11 can be made with the floor 2 and thus be an integral part of said floor 2.
- Fig. 4 shows a floor 2 of a vehicle equipped with a cross member 1, the body 11 has an extension 17 in a portion located at the middle of the length of the body 11, and connected to the longitudinal members 31.
- the extension 17 s' preferably extends towards the rear of the vehicle when the crossbar 1 is fixed on the vehicle.
- the extension 17 is preferably extends at least to the floor portion 2 connected to said heel board.
- the rear fasteners of the front seats generate traction forces on the floor 2 of the vehicle, traction force directed towards the passenger compartment of the vehicle and seeking to lift the floor 2.
- These traction forces applying to the floor 2 are taken up by the cross 1.
- the extension 17 allows to transmit these forces from the seats to the heel board and thus increase the resistance of the floor 2 vis-à-vis these traction forces.
- the width of the extension 17, that is to say its dimension along the transverse axis of the vehicle when the crossbar 1 is installed on the vehicle 2 is greater than the length of the central zone 13, c that is to say the size of the central zone 13 along the transverse axis of the vehicle when the crossbar 11 is installed on the vehicle.
- the extension 17 also makes it possible to increase the size of the section of the body 11 at the level of the central zone 13.
- the capacity of the central zone 13 has withstood the forces in the event of lateral impact is thus improved.
- the cross member may have several extensions 17.
- the cross member 1 may comprise two extensions 17 giving the transom a shape in "TT".
- the body 11 may comprise reinforcing ribs in the volume defined by its section "U" so as to increase the rigidity of said body 11.
- each end piece 12 is positioned between one of the ends of the body 11 and one of the longitudinal members 31, fixed to the body 11 and the spar 31, and thus to the floor 2.
- the floor 2 can be first fixed to the longitudinal members 31, then the body of the cross member is fixed to the floor 2. Finally, each end piece 12 is positioned between one of the ends of the body 11 and one of the longitudinal members 31, fixed to the body 11 and the spar 31, and possibly also to the floor 2.
- the floor 2 is fixed to the longitudinal members 31, then the end pieces 12 are fixed on the body 11, and finally the crossmember 1 is fixed to the floor 2 and to the longitudinal members 31, the ends 12 making the connection between the body 11 and the longitudinal members 31.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1456496A FR3023250B1 (fr) | 2014-07-04 | 2014-07-04 | Traverse transversale de renfort amelioree a rupture programmee |
PCT/FR2015/051640 WO2016001510A1 (fr) | 2014-07-04 | 2015-06-19 | Traverse transversale de renfort améliorée a rupture programmée |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3164317A1 true EP3164317A1 (fr) | 2017-05-10 |
Family
ID=51862415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15745520.5A Withdrawn EP3164317A1 (fr) | 2014-07-04 | 2015-06-19 | Traverse transversale de renfort améliorée a rupture programmée |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3164317A1 (fr) |
FR (1) | FR3023250B1 (fr) |
WO (1) | WO2016001510A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015106272A1 (de) * | 2015-04-23 | 2016-10-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Bodenstruktur eines Kraftfahrzeugs |
CN107985132B (zh) * | 2017-11-24 | 2020-04-07 | 重庆长安汽车股份有限公司 | 安装汽车座椅的组合梁及汽车座椅安装结构 |
US11077812B2 (en) | 2018-02-27 | 2021-08-03 | GM Global Technology Operations LLC | Composite energy-absorbing assembly |
CN108372888A (zh) * | 2018-03-14 | 2018-08-07 | 捷星新能源科技(苏州)有限公司 | 电动汽车前地板总成 |
FR3114568A1 (fr) * | 2020-09-29 | 2022-04-01 | Psa Automobiles Sa | Déflecteur à parois de retenue pour une structure d’un soubassement de véhicule |
US11505252B2 (en) | 2021-02-18 | 2022-11-22 | Honda Motor Co., Ltd. | Interior structure for an automated vehicle |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE976332C (de) * | 1940-08-02 | 1963-07-04 | Budd Co | Fahrzeugunterrahmen, insbesondere kombinierter Fahrgestell- und Wagenkasten-Unterrahmen |
JP3198960B2 (ja) | 1996-04-04 | 2001-08-13 | トヨタ自動車株式会社 | 車両の下部車体構造 |
JP3604085B2 (ja) * | 2001-06-05 | 2004-12-22 | 本田技研工業株式会社 | 車体構造 |
JP4712435B2 (ja) * | 2005-05-06 | 2011-06-29 | 富士重工業株式会社 | 車両の車体構造 |
DE102005051948B4 (de) * | 2005-10-29 | 2007-12-06 | Dr.Ing.H.C. F. Porsche Ag | Vorrichtung zur Aufnahme von Seitenkräften bei einem Seitenaufprall eines Kraftfahrzeugs |
DE102006031452A1 (de) * | 2006-07-07 | 2008-01-17 | Dr.Ing.H.C. F. Porsche Ag | Querbrücke zur Versteifung des Tunnelbereiches einer Bodenstruktur eines Kraftfahrzeuges |
JP2009029244A (ja) * | 2007-07-26 | 2009-02-12 | Toyota Motor Corp | 車体構造 |
DE102009015355A1 (de) * | 2009-03-27 | 2010-09-30 | Audi Ag | Bodenstruktur für ein Kraftfahrzeug |
FR2960506A1 (fr) * | 2010-05-28 | 2011-12-02 | 4C Ecomobile | Vehicule modulaire ecologique |
EP2746140B1 (fr) * | 2011-08-15 | 2016-05-25 | Toyota Jidosha Kabushiki Kaisha | Structure pour partie inférieure de véhicule |
-
2014
- 2014-07-04 FR FR1456496A patent/FR3023250B1/fr not_active Expired - Fee Related
-
2015
- 2015-06-19 EP EP15745520.5A patent/EP3164317A1/fr not_active Withdrawn
- 2015-06-19 WO PCT/FR2015/051640 patent/WO2016001510A1/fr active Application Filing
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2016001510A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2016001510A1 (fr) | 2016-01-07 |
FR3023250B1 (fr) | 2017-12-22 |
FR3023250A1 (fr) | 2016-01-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3164317A1 (fr) | Traverse transversale de renfort améliorée a rupture programmée | |
EP1426242B1 (fr) | Coque de poutre de pare-chocs comportant une doublure de coque et un renfort | |
FR3069517B1 (fr) | Traverse de planche de bord a jambe de force effacee pour vehicule automobile | |
FR2636024A1 (fr) | Dispositif de securite pour automobile et portiere le comprenant | |
EP3558758B1 (fr) | Absorbeur de choc pour véhicule automobile et poutre de chocs comportant cet absorbeur de choc | |
EP3724012A1 (fr) | Systeme d'absorption de choc pour vehicule automobile | |
WO2019063895A1 (fr) | Vehicule comprenant un dispositif d'absorption pour choc frontal a faible recouvrement. | |
FR2776244A1 (fr) | Dispositif de montage du moteur pour ameliorer la tenue au crash des vehicules | |
EP2143620B1 (fr) | Dispositif de renfort d'une traverse d'assise avant de véhicule. | |
WO2016001509A1 (fr) | Traverse transversale de renfort améliorée pour le choc latéral et le choc frontal | |
EP3554923A1 (fr) | Structure de soubassement d'un véhicule automobile, notamment hybride, adaptée pour un choc latéral | |
EP3164318B1 (fr) | Traverse transversale de renfort améliorée | |
WO2022258898A1 (fr) | Élément absorbeur de chocs pour véhicule automobile | |
WO2005019014A1 (fr) | Longeron deformable pour vehicule automobile | |
FR2979130A1 (fr) | Insert de raidissement pour vehicule automobile, notamment pour augmenter la stabilite des corps creux d'un vehicule, et systemes d'absorption de chocs comprenant un tel insert. | |
EP2767458A1 (fr) | Plancher arrière de charge pour véhicule automobile, comportant un longeronnet renforcé | |
FR2926280A1 (fr) | Element de renfort lateral pour bloc avant de vehicule automobile et vehicule automobile equipe d'un tel element | |
FR2706961A1 (en) | Device for absorbing impact energy, especially for a motor vehicle | |
EP3505425B1 (fr) | Traitement local sur plancher monopeau des entrées et diffusions d' effort en choc latéral | |
WO2010125264A1 (fr) | Porte latérale de véhicule automobile comportant un bandeau pour augmenter la résistance de la porte a l'égard des chocs latéraux et véhicule equipe d'une telle porte | |
EP1847445B1 (fr) | Structure avant de véhicule automobile et un procédé correspondant | |
FR3141116A1 (fr) | ensemble de renfort frontal pour véhicule automobile | |
FR2855809A1 (fr) | Support d'aile pour vehicule automobile | |
FR3029851A1 (fr) | Traverse de porte allegee | |
WO2021170925A1 (fr) | Véhicule avec structure montrant une troisième voie d'effort entre le berceau et un brancard avant |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20161212 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PSA AUTOMOBILES SA |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20190102 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20190514 |