WO2024018122A1 - Soubassement de caisse pour véhicule hybride ou électrique doté de longerons latéraux renforcés - Google Patents
Soubassement de caisse pour véhicule hybride ou électrique doté de longerons latéraux renforcés Download PDFInfo
- Publication number
- WO2024018122A1 WO2024018122A1 PCT/FR2023/050799 FR2023050799W WO2024018122A1 WO 2024018122 A1 WO2024018122 A1 WO 2024018122A1 FR 2023050799 W FR2023050799 W FR 2023050799W WO 2024018122 A1 WO2024018122 A1 WO 2024018122A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lateral
- spar
- body base
- reinforcement
- floor
- Prior art date
Links
Classifications
-
- 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
- B62D25/02—Side panels
- B62D25/025—Side sills thereof
-
- 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
- B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
- B62D25/2036—Floors or bottom sub-units in connection with other superstructure subunits the subunits being side panels, sills or pillars
Definitions
- the present invention claims priority from French application 2207385 filed on July 19, 2022, the content of which (text, drawings and claims) is herein incorporated by reference.
- the present invention generally relates to the bodywork of hybrid or electric motor vehicles equipped with a propulsion battery. It is aimed in particular at such a body base provided with reinforced side rails.
- a hybrid or electric type motor vehicle comprises, for its operation, an electric motor and possibly a combustion engine coupled to said electric motor. At least one propulsion battery is also provided in such a vehicle to power the electric motor.
- the body base of such a hybrid or electric vehicle conventionally comprises a front floor extending longitudinally between the front apron and the rear floor, and transversely between two side base members.
- Such a lateral underbody spar generally comprises an elongated hollow body of closed cross section and consisting of an internal spar part as well as an external spar part fixed to each other.
- the body base also includes at least one front seat crossmember fixed on top of the front floor and extending transversely between the two side base members under the first row of seats.
- the side underbody rails and the front seat crossmember(s) contribute to the rigidity of the body base and allow in the event of an impact lateral to effectively limit dynamic intrusions of the doors into the vehicle passenger compartment.
- Such an interior reinforcement is designed to crash against the internal part of the hollow body of the spar so as to absorb a significant portion of the energy of the impact in order to limit the forces transmitted to the seat crossmember(s). .
- the present invention therefore aims to improve the situation.
- a body base for a hybrid or electric motor vehicle comprising a floor extending transversely between two side base members as well as at least one seat crossmember fixed on the top of said floor and extending transversely between the two said side rails to which it is fixed; each said lateral spar comprising an elongated hollow body of closed cross section and consisting of an internal spar part as well as an external spar part fixed to each other, each said lateral spar also comprising an internal reinforcement s extending longitudinally along and inside its hollow body; characterized in that each said lateral spar further comprises an external reinforcement attached fixedly against the exterior face of a zone of said internal part of the spar located opposite said at least one seat crosspiece.
- each said lateral spar has a lying U-shaped profile in section and comprises a lateral core as well as two upper and lower flanges extending opposite to said floor from this lateral core, said exterior reinforcement of each said lateral spar having in section an inverted L-shaped profile and comprising a lateral wing placed against the exterior face of said lateral web as well as an upper wing extending opposite to said floor from this lateral core while being placed against the exterior face of said upper sole;
- each lateral end of said at least one seat crossmember is fixed to the corresponding lateral spar via tabs projecting transversely from said end and welded to the upper wing of the external reinforcement of this spar;
- each said external reinforcement extends vertically on either side of said floor over at least most of the height of the lateral web of the internal part of the corresponding spar;
- each said lateral spar has cutouts made at certain respective zones of the internal part of this spar provided with fixing holes;
- each said lateral spar is obtained from a sheet of double-phase steel metal sheet having a thickness of between 1.5 and 2.5 millimeters;
- each said lateral spar is constituted by a metal profile obtained by extrusion
- each said lateral spar has a cellular structure composed of an exterior envelope and a network of interior partitions crisscrossing the interior volume of this envelope;
- said base comprises two so-called seat crosspieces spaced longitudinally from one another.
- the invention also aims, in a second aspect, at a motor vehicle comprising such a body base.
- FIG 1 represents a partial perspective view of a body structure of a hybrid or electric type vehicle comprising a body base according to the invention provided with two side rails bordering laterally a front floor;
- FIG. 1 is an exploded perspective view of one of the two side rails of the body base of Figure 1;
- FIG. 3 represents a perspective view from another angle of the side beam of Figure 2 in assembled configuration
- FIG 4 is a perspective view of the exterior reinforcement of one of the two side rails of the body base of Figure 1.
- Figure 1 is a partial view of a body structure 1 of a hybrid or electric type motor vehicle.
- substantially will be used to indicate that a slight deviation is permitted from a predetermined nominal position or arrangement, while remaining included within the scope of the invention.
- substantially vertical will indicate that a deviation of around 20° from a strictly perpendicular orientation is admitted within the framework of the invention.
- the body structure 1 comprises a body base 2 according to the invention comprising a front floor 3 extending longitudinally between the front apron 4 and the rear floor 5 intended to support the rear seats (also called “row two seats”), and transversely between two base side rails 10 (only the left side rail 10 is visible in this figure 1).
- a middle pillar 6 separating the front and rear side doors connects each side rail 10 to a corresponding roof side frame 7 of the vehicle (only the left middle pillar 6 and a portion of the left roof side frame 7 being represented on the figure 1 ).
- a propulsion battery not visible in this figure 1 is also installed under the front floor 3 of the vehicle between the two side beams of the base 10.
- the body base 2 also comprises two metal seat crossmembers 8, 9 spaced longitudinally from each other and fixed on top of the front floor 3 extending transversely between the two side base members 10 to which they are also attached.
- the first seat crosspiece 8 is located directly above the two middle legs 6 while the second 9 is located in front of the latter.
- these front seat crossmembers 8, 9 constitute anchoring supports for the seat frames of the front seats by via two pairs of slides not shown, each comprising, in a conventional manner, a lower rail whose two ends are respectively fixed on one and the other of these crosspieces 8, 9 as well as an upper rail mounted sliding on the lower rail and rigidly connected to a corresponding lower side part of the seat frame of a corresponding seat.
- each lateral base beam 10 comprises an elongated hollow body 11 of closed cross section delimiting an interior cavity of substantially square section, this hollow body being consisting of an internal spar part 12 and an external spar part 13.
- These internal 12 and external 13 parts forming the hollow body 11 are each obtained by stamping from one or more sheets of metal sheet, preferably made of double-phase steel and advantageously having a thickness of between 1.2 and 1 .4 millimeters.
- each spar 10 has a profile in section substantially in the shape of a lying U and the opening of which faces away from the front floor 3 of the vehicle to which it is fixed.
- This internal part 12 comprises a substantially vertical lateral core 12A as well as two upper flanges 12B and lower 12C extending substantially horizontally opposite the front floor 3 from this lateral core 12A.
- the upper 12B and lower 12C flanges each extend opposite the lateral web 12A respectively by an upper junction rabbet 12D and by a lower junction rabbet 12E folded towards the outside of the U.
- each spar 10 has a profile in section substantially in the shape of a lying U and the opening of which faces towards the front floor 3 of the vehicle.
- This external part 13 comprises a substantially vertical lateral core 13A as well as two upper flanges 13B and lower 13C extending substantially horizontally in the direction of the front floor 3 from this lateral core 13A.
- the upper 13B and lower 13C flanges each extend opposite the lateral web 13A respectively by an upper junction rabbet 13D and by a lower junction rabbet 13E folded towards the outside of the U.
- each spar 10 The internal 12 and external 13 parts of each spar 10 are fixed to each other by welding their upper junction rabbets 12D, 13D and by that of their lower junction rabbets 12E, 13E.
- Each spar 10 also includes an interior reinforcement 14 extending longitudinally along and inside said hollow body 11 to which it is rigidly fixed.
- This internal spar reinforcement 14 is constituted in this case by a metal profile preferably obtained by extrusion and advantageously made of aluminum or an aluminum alloy.
- the interior spar reinforcement 14 has a cellular structure composed of an exterior envelope 14A of rectangular section and a network of interior partitions 14B crisscrossing the interior volume of this envelope 14A.
- Each spar 10 further comprises an external reinforcement 15 attached fixedly against the exterior face of a central zone of the internal part 12 of the hollow body 11 of the spar 10, located opposite the corresponding lateral ends of the two front seat crossmembers 8, 9.
- the exterior reinforcement 15 of each spar 10 is obtained by cold stamping from a sheet of metal sheet preferably made of double-phase steel (for example, in DP 780) and advantageously having a thickness of between 1.5 and 2.5 millimeters.
- each external reinforcement 15 comprises a substantially vertical side wing 15A placed against the external face of the lateral core 12A of the internal part 12 of the hollow body 11 of the corresponding spar 10 , as well as an upper wing 15B extending substantially horizontally opposite the front floor 3 from this lateral core 15A and being placed against the exterior face of the upper sole 12B of this internal part 12.
- each said external reinforcement 15 extends vertically on either side of the front floor 3 over at least most of the height of the lateral core 12A of the internal part 12 of the corresponding spar 10.
- each lateral end of the seat crosspieces 8, 9 is fixed to the corresponding side beam 10 via tabs 8A, 9A projecting transversely from said end and welded to the upper wing 15B of the external reinforcement 15 of this lateral spar 10.
- each lateral spar 10 advantageously has a certain number of cutouts 16 made at certain respective zones of the internal part 12 of this spar 10 provided with holes 17 intended for fixing by clipping clips of electrical harness fasteners not shown.
- the body base can be shaped differently and include, for example, only one seat crossmember.
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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP23735074.9A EP4558382A1 (fr) | 2022-07-19 | 2023-06-06 | Soubassement de caisse pour véhicule hybride ou électrique doté de longerons latéraux renforcés |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2207385A FR3138106A1 (fr) | 2022-07-19 | 2022-07-19 | Soubassement de caisse pour véhicule hybride ou électrique doté de longerons latéraux renforcés |
FRFR2207385 | 2022-07-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2024018122A1 true WO2024018122A1 (fr) | 2024-01-25 |
Family
ID=87003232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2023/050799 WO2024018122A1 (fr) | 2022-07-19 | 2023-06-06 | Soubassement de caisse pour véhicule hybride ou électrique doté de longerons latéraux renforcés |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4558382A1 (fr) |
FR (1) | FR3138106A1 (fr) |
WO (1) | WO2024018122A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2207385A1 (fr) | 1972-11-17 | 1974-06-14 | Mo I Inzh | |
DE102016000364A1 (de) * | 2015-01-21 | 2016-07-21 | Mazda Motor Corporation | Untere Fahrzeugkarosseriestruktur eines Fahrzeugs und Verfahren zum Absorbieren einer Aufpralllast |
FR3081418A1 (fr) | 2018-05-22 | 2019-11-29 | Psa Automobiles Sa | Renfort de longeron aluminium escalier pour chargement progressif de traverse d’assise basse. |
WO2020120068A1 (fr) * | 2018-12-14 | 2020-06-18 | Bayerische Motoren Werke Aktiengesellschaft | Bloc plancher à accumulateur d'énergie pour une coque de véhicule à moteur |
WO2022033894A1 (fr) * | 2020-08-13 | 2022-02-17 | Daimler Ag | Structure de plancher pour un corps d'un véhicule, corps pour véhicule, et véhicule |
-
2022
- 2022-07-19 FR FR2207385A patent/FR3138106A1/fr active Pending
-
2023
- 2023-06-06 EP EP23735074.9A patent/EP4558382A1/fr active Pending
- 2023-06-06 WO PCT/FR2023/050799 patent/WO2024018122A1/fr active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2207385A1 (fr) | 1972-11-17 | 1974-06-14 | Mo I Inzh | |
DE102016000364A1 (de) * | 2015-01-21 | 2016-07-21 | Mazda Motor Corporation | Untere Fahrzeugkarosseriestruktur eines Fahrzeugs und Verfahren zum Absorbieren einer Aufpralllast |
FR3081418A1 (fr) | 2018-05-22 | 2019-11-29 | Psa Automobiles Sa | Renfort de longeron aluminium escalier pour chargement progressif de traverse d’assise basse. |
WO2020120068A1 (fr) * | 2018-12-14 | 2020-06-18 | Bayerische Motoren Werke Aktiengesellschaft | Bloc plancher à accumulateur d'énergie pour une coque de véhicule à moteur |
WO2022033894A1 (fr) * | 2020-08-13 | 2022-02-17 | Daimler Ag | Structure de plancher pour un corps d'un véhicule, corps pour véhicule, et véhicule |
Also Published As
Publication number | Publication date |
---|---|
EP4558382A1 (fr) | 2025-05-28 |
FR3138106A1 (fr) | 2024-01-26 |
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