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
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K1/00—Arrangement or mounting of electrical propulsion units
  • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K1/00—Arrangement or mounting of electrical propulsion units
  • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
  • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
  • B60K2001/0438—Arrangement under the floor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
  • B60Y2306/00—Other features of vehicle sub-units
  • B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection

Definitions

• TITLE PROTECTION DEVICE AGAINST SIDE IMPACT, FOR A STRUCTURE OF A LAND VEHICLE
• Certain land vehicles generally of the automobile type, include a structure (or platform) comprising:
• these internal longitudinal members are used to laterally protect at least one rechargeable battery installed between them, secured to the structure of the land vehicle, and providing electrical energy for at least one electric motive machine of the powertrain (or GMP).
• the invention therefore aims in particular to improve the situation.
• a protective device intended to form part of a structure of a land vehicle comprising an external spar, a crosspiece having one end fixedly secured to the external spar, and an internal spar fixedly secured to a lower face of the crosspiece being separated from the external spar by a space.
• This protection device is characterized by the fact that it includes:
• the protection device according to the invention may include other characteristics which can be taken separately or in combination, and in particular:
• N can comprise N first parts, with N > 2, suitable for being installed transversely in N places in the space and for distributing the part of the force suffered by the external spar towards N places on the internal spar;
• N can be equal to four;
• At least two first parts can have arrangements which differ from each other;
• each first part can comprise a height which increases between a first end adapted to be fixedly secured to the internal face of the external spar and a second end adapted to be fixedly secured to the external face of the internal spar;
• each first part can comprise a first wall of coupling adapted to rest against, and to be fixedly secured to, the internal face of the external spar, and the second end of each first part may comprise a second coupling wall adapted to lean against, and to be fixedly secured to , the external face of the internal spar;
• each first part may comprise a third coupling wall capable of resting against, and of being fixedly secured to, a lower face of a floor of the structure to which the internal spar and the crosspiece are fixedly secured;
• the second part may comprise a height which decreases between a first end adapted to be fixedly secured to the internal face of the external spar and a second end adapted to be fixedly secured to the lower face of the end of the crosspiece;
• its second part may comprise a main part having a section, in a longitudinal and vertical plane, in the general shape of a U.
• the invention also proposes a land vehicle, possibly of automobile type, and comprising a structure comprising:
• this land vehicle can also include at least one rechargeable battery secured to its structure by being installed between the internal longitudinal members.
• at least one rechargeable battery secured to its structure by being installed between the internal longitudinal members.
• FIG. 1 schematically illustrates, in a perspective view from below, a part of an example of a land vehicle structure comprising an exemplary embodiment of a protection device according to the invention
• FIG. 2 schematically illustrates, in a perspective view from below, the first four parts and the second part of the protection device of Figure 1,
• FIG. 3 schematically illustrates, in a sectional view in a first transverse and vertical plane just before a first part of the protection device, a straight part of the structure of Figure 1,
• FIG. 4 schematically illustrates, in a sectional view in a transverse and vertical plane just before the second part of the protection device, a straight part of the structure of Figure 1,
• FIG. 5 schematically illustrates, in another perspective view, the positioning of the first end of the second part of the protection device of Figure 1 in relation to the corresponding external spar
• FIG. 6 schematically illustrates, in another perspective view, the second part of the protection device of Figure 1.
• the invention aims in particular to propose a DP protection device intended to form part of an SV structure of a land vehicle V comprising external LE and internal Ll spars and a crossmember TS, to reduce the consequences of a lateral impact on an external spar LE without increasing the dimensioning of the external spars LE and internal spars Ll and the crossmember TS.
• the land vehicle V is of the automobile type. This is for example a car. But the invention is not limited to this type of land vehicle. It concerns any land vehicle comprising a structure with external and internal spars and crossbars.
• FIG. 1 a left sub-part of a part of an example of structure SV of a (land) vehicle V comprising an example of realization of a protection device DP according to the invention.
• the structure SV comprises two external spars LE right and left (only the left is illustrated), a crosspiece TS, and two internal spars Ll right and left (only the left is illustrated ).
• the crosspiece TS has two opposite ends ET and fixedly secured respectively to the external longitudinal members LE, for example by welding.
• the TS crossmember can define (at least in part) what those skilled in the art sometimes call the heel board which delimits the rear of the area in which the passengers of vehicle V can place their feet.
• the two internal longitudinal members Ll (or stretchers under the floor) are fixedly attached to a lower face FIT of the cross member TS, for example by welding, being separated respectively from the external beams LE by spaces EIL.
• the vehicle V also includes a rechargeable battery BR which is secured to its structure SV (and more precisely to the lower face FI3 of the floor PS which it comprises) , being installed between the internal spars Ll and, here, the crosspiece TS.
• the internal longitudinal members Ll are therefore used here to laterally protect the rechargeable battery BR which is installed between them.
• This rechargeable battery BR can, for example, provide electrical energy for at least one electric driving machine of the powertrain (or GMP) of the vehicle V. It will be noted that this GMP can be of the all-electric or hybrid type (thermal and electric). ).
• the vehicle V could include several rechargeable batteries BR or could not include any rechargeable battery BR (and in the latter case the internal longitudinal members Ll essentially serve to reinforce the structure SV).
• a protection device DP As partially illustrated in Figure 1, in each space EIL (present between a left (or right) external spar LE and a left (or right) internal spar Ll), a protection device DP according to the invention is installed .
• a protection device DP comprises at least a first part P1 k and/or a second part P2. It will be understood that, depending on the needs required by the desired level of protection, the protection device DP can comprise either at least a first part P1 k, or a second part P2, or even at least a first part P1 k and a second part P2.
• the (each) first part P1 k is capable of being installed transversely in the space EIL (left or right) by being fixedly secured to the internal face FI1 of the external spar LE (left or right) and to the external face FE2 of the internal spar Ll (left or right). Note that this external face FE2 is the one which is oriented towards the internal face FI1 of the neighboring external spar LE.
• the (each) first part P1 k is arranged, in the event of an impact suffered by the external spar LE concerned (on its external face FE1), so as to transfer part of the force suffered by this external spar LE towards the neighboring internal spar Ll.
• the first part(s) P1 k participate(s) during the lateral impact in the absorption of energy by deformation, in addition to the participation of the external spar LE, of the relevant part of the PS floor of the SV structure and the ET end of the TS sleeper.
• the second part P2 is suitable for being placed in the space EIL (left or right) under the lower face FIT of the end (left or right) AND of the crosspiece TS, being fixedly secured to the internal face FI1 of the external spar LE (left or right).
• this second part P2 is arranged to increase the force-withstanding capacity of this end AND by increasing its coupling height with this external spar LE.
• the second part P2 participates during the lateral impact in the absorption of energy by deformation, in addition to the participation of the ET end concerned of the crosspiece TS.
• the invention therefore makes it possible to significantly reduce the probability of lateral damage to the possible rechargeable battery BR, and/or pinching or crushing of the exhaust line of the vehicle V when the latter is partly housed in the space EIL between the external LE and internal Ll spars (below the protection device DP). This strengthens the passive protection of the vehicle V and its passengers.
• each first part P1 k can be fixedly joined by welding to the internal face FI1 of the external spar LE concerned and to the external face FE2 of the internal spar Ll concerned.
• each first part P1 k can be made of steel.
• it may be a DP450 steel having a thickness of between 1.5 mm and 2.5 mm.
• the second part P2 can be fixedly joined by welding to the lower face FIT of the end ET of the crosspiece TS concerned and to the internal face FI1 of the external spar LE concerned.
• the second part P2 can be made of steel.
• it may be an E335D steel having a thickness of between 1.5 mm and 2 mm.
• the first N pieces P1 k are suitable for being installed transversely in N locations of the EIL space concerned and for distributing the part of the force undergone by the external spar LE concerned towards N locations of the neighboring internal spar Ll.
• At least two first parts P1 k can have arrangements which differ from each other.
• the first P11 and third P13 first parts are identical, and the second P12 and fourth P14 first parts are identical and different from the first P11 and third P13 first parts.
• the first four pieces P1 k could have four different shapes respectively or could all have the same shape.
• each first part P1 k can be arranged in such a way as to allow its deformation in a programmed manner, for example of the “accordion” type, in the phase of absorption of the energy of the lateral impact.
• each first part P1 k may include at least one opening and/or at least one stamping zone dedicated to its programmed deformation.
• each first part P1 k can comprise at least a stamping zone allowing its rigidification before its deformation (possibly in a programmed manner).
• each stamping zone can have a depth of between 5 mm and 8 mm.
• each first part P1 k can comprise a height which increases between its first end E1 which is capable of being fixedly secured to the internal face FI1 of the external spar LE concerned and its second end E2 which is opposite its first end E1 and capable of being fixedly secured to the external face FE2 of the internal spar Ll concerned.
• first end E1 of each first part P1 k can comprise a first coupling wall PC1 which is capable of resting against, and to be fixedly secured to the internal face FI1 of the external spar LE concerned
• second end E2 of each first part P1 k can comprise a second coupling wall PC2 which is able to lean against, and to be fixedly secured to, the external face FE2 of the internal spar Ll concerned.
• first PC1 and second PC2 coupling walls are substantially contained in a plane external LE towards the neighboring internal spar Ll.
• each first coupling wall PC1 can extend over the entire height of its first end E1, and over several centimeters along the longitudinal direction x.
• each first coupling wall PC1 of a first part P1 k can extend in a direction which is opposite to the direction in which the second wall extends coupling PC2 of this first part P1 k.
• the first coupling walls PC1 of the first P11 and third P13 first parts P1 k extend towards the front of the vehicle V, while the second coupling walls PC2 of the second P12 and fourth first P14 parts P1 k extend towards the rear of the vehicle V.
• first coupling walls PC1 of the first P11 and third P13 first parts P1 k extend towards the rear of the vehicle V
• the second coupling walls PC2 of the second P12 and fourth P14 first parts P1 k extend towards the front of the vehicle V.
• This option increases the probability of maintaining the connection of a first part P1 k to the internal face FI1 of the external spar LE and external face FE2 of the internal spar Ll in the event of a lateral impact, and in particular when the direction of the impact on the external face FE1 of the external spar LE makes a non-zero angle with the transverse direction Y.
• the third coupling wall PC3 of each first part P1 k can be fixedly joined by welding to the lower face FI3 of the floor PS of the structure SV.
• each first part P1 k can comprise a third coupling wall PC3 which is capable of resting against, and being fixedly attached to, the lower face FI3 of the floor PS of the structure SV to which the internal spar Ll concerned and the crosspiece TS are fixedly attached.
• This option also makes it possible to increase the probability of maintaining the connection of a first part P1 k to the structure SV in the event of a lateral impact, and in particular when the direction of the impact on the external face FE1 of the external spar LE makes a non-zero angle with the transverse direction Y. In addition, this also makes it possible to increase the probability that a first part P1 k deforms as expected (or programmed) in the energy absorption phase side impact.
• each first coupling wall PC1 can be fixedly joined by welding to the internal face FI1 of the external spar LE concerned
• each second coupling wall PC2 can be fixedly joined by welding to the external face FE2 of the spar internal Ll concerned.
• the second part P2 can comprise a height which decreases between its first end E1 'which is capable of being fixedly secured to the internal face FI1 of the external spar LE concerned and its second end E2' which is opposite its first end E1' and capable of being fixedly secured to the lower face FIT of the end ET concerned of the crosspiece TS.
• the second part P2 can comprise a main part PP which has a section, in the longitudinal and vertical plane XY, in the form general of U.
• the main part PP here comprises two transverse walls PT1 and PT2 substantially parallel to each other. This option makes it possible to further reinforce the relevant ET end of the TS sleeper, to so that it can withstand even greater side impacts.
• a first (PT1) of the two transverse walls of the main part PP can extend upwards to the floor PS by surrounding partially the end ET concerned of the crosspiece TS, and may include a fourth coupling wall PC4 intended to be fixedly attached to the lower face FI3 of the floor PS. This joining can be done by welding.
• the second end E2' of the main part PP which is opposite the external spar LE concerned, is fixedly attached to the lower face FIT of the crosspiece TS, for example by welding.
• the first ends E1 'of the first PT1 and second PT2 transverse walls of the second part P2 can respectively comprise fifth PC5 and sixth PC6 coupling walls which are suitable for leaning against, and being fixedly attached to, the internal face FI1 of the external spar LE concerned. It will be understood that the fifth PC5 and sixth PC6 coupling walls are substantially contained in a plane external LE (at one end ET of the crosspiece TS) towards this end ET.
• the fifth PC5 and sixth PC6 coupling walls extend in opposite directions.
• the fifth coupling wall extends towards the front of the vehicle V
• the sixth coupling wall PC6 extends towards the rear of the vehicle V.
• the second part P2 can include at least one stamping zone allowing its rigidification before its deformation.
• each stamping zone can have a depth of between 3 mm and 7 mm.

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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)
• Vibration Dampers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=83188480

Family Applications (1)

Country Status (3)

Families Citing this family (2)

Family Cites Families (4)

• 2022
  • 2022-07-07 FR FR2206941A patent/FR3137647A1/fr active Pending
• 2023
  • 2023-06-06 EP EP23735357.8A patent/EP4551449A1/de active Pending
  • 2023-06-06 WO PCT/FR2023/050795 patent/WO2024009016A1/fr not_active Ceased

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