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
  • B62D25/20—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
• • 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

Definitions

• TITLE VEHICLE WITH STRUCTURE WITH PILLAR REINFORCEMENTS
• the invention relates to vehicles, possibly of the automobile type, and more specifically to the structures that these vehicles comprise.
• Many vehicles generally of the automobile type, comprise a structure comprising at least two (structural) elements defining uprights (or “feet”), right and left, which must deform without breaking when they undergo a side impact. It is in fact desirable that in the event of a side (or transverse) impact, the lower part of a pillar can deform more than its central and upper parts in order to optimize the protection of the neighboring passenger.
• the aim of the invention is therefore in particular to improve the situation.
• a vehicle comprising a structure comprising at least two right and left uprights each comprising a lower part fixedly secured to a floor.
• This vehicle is characterized in that its structure further comprises two reinforcing parts, right and left, each fixedly secured to one of the lower parts and to the floor, and having a general shape of its own inverted square, by deformation, to absorb at least part of a side impact energy undergone by the associated lower part.
• the vehicle according to the invention may include other characteristics which may be taken separately or in combination, and in particular:
• each reinforcing piece may comprise, on the one hand, a first part extending from the associated lower part in a transverse direction of the vehicle and substantially parallel to the floor, and, on the other hand, a second part extending this first part down ;
• each first part can be parallel to the floor
• each second part can form an angle with the associated first part which is between 90° and 100°;
• each first part may comprise at least one transverse edge folded downwards and capable of increasing the transverse stiffness of its reinforcing piece;
• each first part can include on at least one transverse edge, close to the associated second part, a cutout rounded inwards and capable of allowing deformation by rotation;
• each reinforcing part may comprise, on the one hand, a third part extending the first part upwards and fixedly secured to the associated lower part by at least one spot weld, and, d on the other hand, a fourth part extending the second part above the floor and fixedly secured to the latter by at least one spot weld;
• each first part may comprise at least one through hole allowing attachment of vehicle equipment
• the equipment can be a fitting
• each upright can be a rear upright or a central upright
• FIG. 1 schematically illustrates, in a first perspective view, a left rear part of an exemplary structure of a vehicle according to the invention.
• FIG. 2 schematically illustrates, in a second perspective view, a left rear pillar of the vehicle structure of Figure 1, which is associated with an example of a reinforcing piece.
• the object of the invention is in particular to propose a vehicle V comprising a structure SV comprising at least two uprights MR, right and left, each comprising a lower part PI associated with a reinforcing piece PR deforming with the latter (PI) in the event of a side impact.
• the vehicle V is of the automobile type. This is for example a car, as illustrated partially and not exhaustively in Figure 1. But the invention is not limited to this type of vehicle. It relates in fact to any type of vehicle comprising a structure comprising at least two uprights, right and left, which must deform in the event of a side impact.
• the uprights MR are rear uprights (or feet) of a structure SV of a vehicle V. But the invention is not limited to this type of amount MR. It also concerns the central uprights (or feet).
• the direction X is the longitudinal direction of the vehicle V, which is parallel to the lateral sides comprising the side doors
• the direction Y is the transverse direction of the vehicle V, which is perpendicular to the longitudinal direction X
• the direction Z is the vertical direction of the vehicle V, which is perpendicular to the longitudinal X and transverse Y directions.
• FIG. 1 a left rear part of an example of structure SV of a vehicle V according to the invention.
• this structure SV comprises a floor PV to which are fixedly secured two uprights (or feet) MR, right and left, each comprising a lower part PI extended upwards by a central part.
• the right upright here at the rear, is similar to the left rear upright MR illustrated.
• each upright MR which is fixedly secured to the floor PV, preferably by welding.
• the structure SV also comprises two reinforcement pieces PR, right and left, each fixedly secured to one of the two lower parts PI and to the floor PV. More specifically, the right PR reinforcement piece is fixedly fixed to the lower part PI of the right MR upright and to the floor PV, and the left PR reinforcement part is fixedly fixed to the lower part PI of the left MR upright and PV floor.
• each piece of PR reinforcement has a general shape of an inverted bracket which is suitable, by deformation, to absorb at least part of the energy of a side impact suffered by the associated lower part PI.
• inverted square means a square which, contrary to what is otherwise usually done, is not pressed against the lower part PI and the floor PV, and therefore which is almost completely separated by an empty space from the part associated lower PI and floor PV due to its position inversion. It therefore comprises a first part P1 placed opposite the floor PV, but at a distance from it, and a second part P2 placed opposite an associated upright MR, but at a distance from it.
• this PR reinforcement piece having a high deformation capacity due to its particular shape and position, in the event of a side impact suffered by the associated lower part PI, it is the assembly (PR reinforcement piece plus lower part PI ) which deforms without the lower part PI breaking.
• each piece of reinforcement PR comprises first P1 and second P2 parts which extend mutually, defining the general shape of an inverted square.
• the first part P1 extends from the associated lower part PI in the transverse direction Y of the vehicle V and substantially parallel to the floor PV.
• the second part P2 extends the first part P1 downwards, to the floor PV.
• each first part P1 can be parallel to the floor PV and therefore contained in an XY plane. But in a variant embodiment not illustrated, each first part P1 could be very slightly disoriented by a few degrees (typically up to 3°) with respect to the XY plane.
• each second part P2 can make an angle of 90° with the associated first part P1. But this is not mandatory. Indeed, this angle can be between 90° and 100°.
• each first part P1 can comprise at least one transverse edge BT folded downwards and able to increase the transverse stiffness of its reinforcement piece PR.
• transverse edge means an edge which is substantially parallel to the transverse direction Y (and contained in a plane YZ when it is folded downwards). It will be understood that due to its transverse and vertical position, a folded transverse edge BT constitutes a kind of thickness extender for the lower part PI in the transverse direction Y, and therefore contributes to reinforcing the transverse stiffness of the upright MR while allowing its deformation in its lower part PI.
• the first part P1 comprises only one transverse edge BT folded downwards, and more precisely that which is closest to the front end of the vehicle V. But in a first variant embodiment the first part P1 could also comprise only one transverse edge BT folded downwards, namely that which is closest to the rear end of the vehicle V. In a second variant embodiment the first part P1 could comprise two transverse edges BT folded downwards and substantially parallel to each other. Also for example, and as illustrated without limitation in Figure 2, each first part P1 may comprise on at least one of its two transverse edges BT, close to the associated second part P2, an inwardly rounded cutout DA and adapted to allow deformation by rotation. In the example illustrated without limitation in FIG.
• each piece of reinforcement PR can comprise third P3 and fourth P4 parts.
• the third part P3 extends the first part P1 upwards and is fixedly secured to the associated lower part PI by at least one spot weld.
• the fourth part P4 extends the second part P2 above the floor PV and is fixedly secured to the latter (PV) by at least one spot weld.
• each connection can be made by two spot welds. It will be noted that spot welds are preferred to weld beads because the latter induce an increase in rigidity which limits the capacity for deformation.
• the lateral end of the first part P1 is fixedly secured to the associated lower part PI by at least one spot weld and the lower end of the second part P2 is fixedly secured to the PV floor by at least one spot weld.
• each first part P1 can comprise at least one through-hole TT advantageously allowing attachment of equipment of the vehicle V, such as for example a trim, which is not possible in the same zone in the absence of a PR reinforcement piece.
• each first part P1 comprises four through-holes TT. But the number of through holes TT can take any value greater than or equal to one, as required.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Body Structure For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=77021528

Family Applications (1)

Country Status (4)

Family Cites Families (6)

• 2021
  • 2021-06-10 FR FR2106151A patent/FR3123877A1/fr active Pending
• 2022
  • 2022-05-03 EP EP22724811.9A patent/EP4351952A1/de active Pending
  • 2022-05-03 CN CN202280041181.5A patent/CN117999218A/zh active Pending
  • 2022-05-03 WO PCT/FR2022/050852 patent/WO2022258897A1/fr active Application Filing

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