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
  • B62D25/02—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

• TITLE STRUCTURAL ASSEMBLY WITH PROGRAMMED DEFORMATION FOR A MOTOR VEHICLE STRUCTURE
• Certain motor vehicles comprise a structure comprising a floor secured to two side rails (right and left) and comprising a zone above which at least one seat is intended to be installed (for example a rear bench seat in the case of a car).
• On this area is generally installed transversely a structural assembly comprising a part, defining what those skilled in the art sometimes call a heel board, and a crosspiece associated with this part.
• This structural assembly which is part of the vehicle structure, comprises two opposite ends which are secured respectively to the side rails (right and left).
• the vehicles (automobiles) presented above must be capable of protecting their passengers when they suffer a side impact on one of their side rails.
• lateral impact an impact following a direction having a non-zero transverse component. This requires their structure to have very high stiffness, and all the more so as the weight of the vehicle is significant and this lateral impact results from a collision with an object. low longitudinal extension, such as a pole.
• GMP powertrain
• the vehicle includes a set (or “pack”) of rechargeable battery which can be installed between its side rails, under the area of the floor on which the structural assembly is installed transversely, and which must also be protected in the event of a lateral impact.
• the side rails and the structural assembly must contribute to the aforementioned stiffness, they must absorb the greatest possible quantity of the energy of a lateral impact.
• the aforementioned constraint also imposes a limitation on the height of the latter. Consequently, if we want the mileage range not to be reduced, we are forced to increase the width of the rechargeable battery assembly and therefore reduce the width of the side members, even though the latter must also protect the rechargeable battery set.
• the invention therefore aims in particular to improve the situation, in particular to increase the passive protection of passengers, as well as a possible rechargeable battery assembly, in the event of a side impact.
• a structural assembly intended to form part of a structure of a motor vehicle comprising a floor secured to two right and left longitudinal members and comprising a zone above which is intended to be installed at least one seat, and, on the other hand, comprising a first part defining a heel board and associated with a crosspiece and being suitable for being installed transversely on this area while being secured to the longitudinal members.
• This structural assembly is characterized by the fact that it comprises two lateral parts each capable of being fixedly secured to one of the longitudinal members, and each arranged so as to deform in a programmed manner in the event of a force absorbed during a shock by the associated spar, to absorb part of this effort.
• the structural assembly according to the invention may include other characteristics which can be taken separately or in combination, and in particular:
• each of the first parts and crosspieces can comprise two first opposing lateral sub-parts and each participating in the definition of one of the lateral parts;
• the first option in the presence of the first option, it can comprise two second attached parts fixedly secured and respectively at two opposite ends of the crosspiece, respectively defining the first lateral sub-parts of this crosspiece, and capable of being fixedly joined together and respectively to the spars;
• each of the second parts can have a shape and/or a thickness and/or a material varying depending on a type of a powertrain of the vehicle, this type being chosen among purely electric, hybrid and purely thermal;
• the reinforcing part may have a shape and/or a thickness and/or a material varying depending on a type of powertrain of the vehicle, this type being chosen from purely electric, hybrid and purely thermal.
• this motor vehicle can also include a rechargeable battery assembly installed under the floor between the side members.
• FIG. 1 schematically illustrates, in a perspective view, part of an example of a motor vehicle structure comprising an example of production of a structural assembly according to the invention
• FIG. 2 schematically illustrates, in a perspective view from the front side, a left part of a first embodiment of a structural assembly according to the invention
• FIG. 3 schematically illustrates, in a perspective view from the front side, a left part of a first part of the structural assembly of Figure 2
• FIG. 4 schematically illustrates, in a perspective view from the front side, a left part of a crosspiece of the structural assembly of Figure 2, equipped with a second part, itself equipped with a third part
• FIG. 5 schematically illustrates, in a perspective view from the front side, a reinforcing part of the structural assembly of Figure 2,
• FIG. 6 schematically illustrates, in a perspective view from the front side, a left part of a second embodiment of a structural assembly according to the invention
• FIG. 7 schematically illustrates, in a perspective view from the front side, a left part of a first part of the structural assembly of Figure 6,
• FIG. 8 schematically illustrates, in a perspective view from the front side, a left part of a crosspiece of the structural assembly of Figure 6, equipped with a second part, itself equipped with a third part, and
• FIG. 9 schematically illustrates, in a perspective view from the front side, a reinforcing part of the structural assembly of Figure 6.
• the invention aims in particular to propose a structural assembly ES with programmed deformation and intended to form part of a structure SV of a motor vehicle VA.
• the motor vehicle VA is a car. But the invention is not limited to this type of motor vehicle. It concerns in fact any motor vehicle comprising a structure comprising a floor having an area on which a structural assembly which must be fixedly secured to two side rails can be installed transversely.
• the direction which is perpendicular to the longitudinal direction X, and the direction Z is the vertical direction of the vehicle VA, which is perpendicular to the longitudinal directions
• FIG. 1 a part of an example of structure SV of a (motor) vehicle VA, comprising an exemplary embodiment of a structural assembly ES according to the invention.
• the SV structure notably comprises a PV floor having right and left longitudinal sides secured respectively to two LV lateral spars, right and left, and comprising a zone ZP on which is installed transversely (in the transverse direction Y) a structural assembly ES above which at least one seat is intended to be installed (for example a rear seat in the case of a car).
• a structural assembly ES is suitable for forming part of the structure SV of a vehicle VA, and more precisely for being installed transversely on the zone ZP of the floor PV by being secured to the LV side rails.
• a structural assembly ES comprises at least a first part P1 associated with a crosspiece TP, and two lateral parts PL capable of being fixedly secured and respectively to the two LV side rails.
• the first part P1 defines a heel board.
• a main part PP1 having a section in a plane XZ in the general shape of S (with lower and upper parts substantially horizontal, and an intermediate part substantially vertical , defining the heel board and connecting the lower and upper parts).
• the first part P1 comprises a rear face FR1 which is oriented towards a front face FV2 of the crosspiece TP.
• the first part P1 is fixedly attached to the crosspiece TP, for example by welding, and they together define a hollow body having a section in a substantially rectangular plane XZ.
• Each of the two lateral parts PL is capable of being fixedly secured to one of the lateral spars LV, and is arranged so as to deform in a programmed manner in the event of a force absorbed during a lateral impact by the spar lateral LV associated (arrow F1 in Figure 1), in order to absorb part of this effort.
• the first lateral sub-parts SPL11 are an integral part of the first part P1 (and therefore are not attached).
• the first part P1 is advantageously common to all vehicle variations using the same structure (or platform).
• the first lateral sub-parts SPLI 1 could be attached by welding to opposite ends of a main part of the first part P1.
• the structural assembly ES can also include two second parts which are attached and fixedly secured respectively to two opposite ends ET of the crosspiece TP. These second parts respectively define the first lateral sub-parts SPLI2 of the crosspiece TP, and are capable of being fixedly secured respectively to the lateral beams LV.

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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)
• Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
• Seats For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=84362346

Family Applications (1)

Country Status (3)

Family Cites Families (6)

• 2022
  • 2022-10-12 FR FR2210469A patent/FR3140853A1/fr active Pending
• 2023
  • 2023-09-11 WO PCT/FR2023/051369 patent/WO2024079400A1/fr not_active Ceased
  • 2023-09-11 EP EP23783480.9A patent/EP4601931A1/de active Pending

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