WO2024200940A1 - Structure de renfort pour véhicule automobile - Google Patents
Structure de renfort pour véhicule automobile Download PDFInfo
- Publication number
- WO2024200940A1 WO2024200940A1 PCT/FR2024/050245 FR2024050245W WO2024200940A1 WO 2024200940 A1 WO2024200940 A1 WO 2024200940A1 FR 2024050245 W FR2024050245 W FR 2024050245W WO 2024200940 A1 WO2024200940 A1 WO 2024200940A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fixing part
- shell
- reinforcing structure
- front foot
- core
- 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.)
- Ceased
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
- B62D25/04—Door pillars ; windshield pillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
- B62D27/023—Assembly of structural joints
Definitions
- a junction between the front foot and the side member makes it possible to establish a fixing of the front foot side member, in a direction parallel to an axis of elongation proper to the side member, that is to say along a longitudinal axis of extension of the motor vehicle.
- the known connecting reinforcements extend like a core in the side member in order to increase their rigidity and to allow better transmission of forces in the event of a frontal impact.
- Known connecting reinforcements are fixed together using a position-holding part that allows the side member and the connecting reinforcement to be positioned in place during their assembly.
- Such known holding parts are not intended to contribute to the transmission of force through the side member and the connecting reinforcement in the event of a frontal impact. In fact, they have a small thickness, typically of the order of a few millimeters, so as not to unnecessarily overload the mass of the motor vehicle.
- the object of the present invention is to propose a novel front reinforcement structure in order to at least largely address the preceding problems and to further lead to other advantages.
- Another aim of the invention is to reinforce the connection between the front foot and the front spar.
- a reinforcement structure for a motor vehicle comprising:
- connection reinforcement fixed to the front foot and to the front spar, the connecting reinforcement comprising a web housed in the front spar and extending along the proper elongation axis.
- the connecting reinforcement comprises a part for fixing the web to the front foot.
- a longitudinal axis, a lateral axis and a vertical axis are defined relative to the motor vehicle on which the reinforcement structure according to the first aspect of the invention is intended to be mounted. More particularly, the transverse axis is understood as a direction taken between a lateral side of the motor vehicle and an opposite lateral side of said motor vehicle. In other words, the transverse axis is understood as a direction that extends from a passenger side of the motor vehicle to a driver's side of said motor vehicle, or vice versa.
- the adjectives lateral, interior and exterior refer to such a transverse axis.
- the longitudinal axis extends as being taken along a direction that extends from front to rear or from rear to front of the motor vehicle.
- the longitudinal axis is perpendicular to the transverse axis.
- the adjectives frontal, front and rear refer to reference to this longitudinal axis.
- the vertical axis is understood as being taken along an axis which extends from the wheels of the motor vehicle and towards the roof of said motor vehicle, or vice versa, the vertical axis being simultaneously perpendicular to the transverse axis and to the longitudinal axis.
- the adjectives above and below, or lower and upper refer to this vertical axis.
- the front pillar is a structural element of the motor vehicle which is located on one side of the motor vehicle, laterally to the engine compartment of the motor vehicle and in front of the passenger compartment.
- the front pillar is connected to the bulkhead and also forms a rigid element to which the front stretcher is connected, the front pillar forming an upright located in front of said stretcher.
- the front pillar is in particular configured to support hinges of a front door of the motor vehicle.
- the front side member forms a prismatic span that extends relative to the longitudinal axis of the motor vehicle, at each lateral edge of said motor vehicle.
- the front side members form structural elements of the motor vehicle to which other parts of the motor vehicle are attached.
- the front side members thus provide the rigidity necessary for the operation of the motor vehicle, during driving sequences, but also in the event of an accident in order to transmit the forces resulting from said impact towards absorption devices or towards the running gear of the motor vehicle, for example.
- the front side members are fixed securely to the front pillar located opposite.
- the connecting reinforcement is an additional mechanical element, attached to the front spar, in order to reinforce its rigidity, in particular with regard to compression, buckling, shear or bending forces.
- the connecting reinforcement takes the form of a prismatic span which extends into the front spar.
- the prismatic span forms the web of the connecting reinforcement.
- the web may be solid or hollow. A front part of the web extends into a rear part of the front foot, and a rear part of the web extends into a front part of the front spar.
- the fastening part makes it possible to hold the web and the front foot together, in a manner particularly advantageous to the invention according to its first aspect, the fastening part has a thickness greater than the known fastening parts, so that it now contributes to the transmission of forces through the front foot and the front spar.
- the fastening part is now configured to reinforce the front spar and the front foot during a frontal impact.
- the fastening part is also a reinforcement part for the front foot and the front spar.
- the reinforcement structure in accordance with the first aspect of the invention advantageously comprises at least one of the improvements below, the technical characteristics forming these improvements being able to be taken alone or in combination:
- the front spar comprises a first half-profile and a second half-profile, the first half-profile and the second half-profile being connected together at a longitudinal cap and together forming a hollow housing inside which extends a rear portion of the web of the connecting reinforcement.
- Each half-profile extends along the proper elongation axis, the half-profiles forming the hollow housing between them.
- Each half-profile is connected to the other at their longitudinal cap forming a connecting interface which extends along the proper elongation axis.
- the first half-profile is fixed integrally to the second half-profile at their longitudinal cap, by welding. In a perpendicular plane, the first half-profile and the second half-profile form a closed contour;
- the fixing part comprises (i) a bearing face against the web and (ii) a flange which extends projecting from the bearing face, the flange forming a bearing flange against the front foot.
- the bearing face of the fixing part is placed in abutment against the web of the connecting reinforcement; and the flange of the fixing part is placed in abutment against the front foot.
- the fixing part forms an interface part between the connecting reinforcement and the front foot.
- the flange is of the type of a folded edge which extends from a longitudinal edge of the bearing face;
- the edge is placed in abutment against the longitudinal flap of the first half-shell and/or the second half-shell of the front foot.
- the edge is placed in an intermediate position between the first half-shell and the second half-shell of the front foot;
- the fastener is securely fastened to the core by a plurality of rivets.
- Each rivet extends through the fastener and the core.
- the rivets extend through the bearing face of the fastener;
- the fixing part is fixedly attached to the front leg by means of a plurality of weld points.
- the weld points bind the fixing part and the front leg together.
- the weld points are located along the edge of the fixing part;
- the welding points bind together, on the one hand, the edge of the fixing piece and, on the other hand, the longitudinal flap of the first half-shell and/or of the second half-shell forming the front foot;
- the fixing part is formed of a metallic material.
- the material forming the fixing part comprises a steel. This configuration advantageous allows to improve the mechanical reinforcement and the resistance to the forces generated by a frontal impact;
- the fixing part is obtained by stamping a folded sheet of constant thickness.
- the thickness is taken according to the smallest dimension of the fixing part, for example perpendicular to the support face.
- a thickness of the fixing part is between 1.5 mm and 3.5 mm.
- a thickness of the fixing part is greater than 2 mm. This configuration ensures sufficient resistance in the event of frontal impacts.
- a motor vehicle comprising at least one reinforcement structure in accordance with the first aspect of the invention or according to any of its improvements.
- FIG.1 illustrates a side sectional view of an exemplary embodiment of a reinforcement structure in accordance with the first aspect of the invention
- FIG.2 illustrates a detailed perspective view of the reinforcement structure shown in FIGURE 1;
- FIG.3 illustrates a first perspective view of an exemplary embodiment of a fixing part of the reinforcement structure illustrated in FIGURE 1;
- FIG.4 illustrates a second perspective view of the fastener shown in FIGURE 3.
- the invention relates to a reinforcement structure 1 for a motor vehicle, the reinforcement structure 1 comprising:
- a front spar 12 extending along a specific elongation axis, the front spar 12 being fixed integrally to the front foot 11. More particularly, a front portion of the front spar 12 is fixed integrally to a rear lower portion of the front foot 11.
- the front spar 12 is preferably formed by a profile.
- the front spar 12 comprises a first half-profile and a second half-profile, the first half-profile and the second half-profile being connected together at a longitudinal cap and together forming a hollow housing inside which extends a rear portion of the web 131 of the connecting reinforcement 13.
- Each half-profile extends along the specific elongation axis, the half-profiles forming the hollow housing between them.
- Each half-profile is connected to the other at their longitudinal cap forming a connection interface which extends along the proper elongation axis.
- the first half-profile is fixed integrally to the second half-profile at their longitudinal cap, by welding. In a perpendicular plane, the first half-profile and the second half-profile form a closed contour;
- the core 131 extends in a straight line inside the front spar 12 and at the level of the lower rear part of the foot before 11. The core 131 thus makes it possible to improve the transmission of forces between the front pillar 11 and the front side member 12 during a frontal impact, by reducing the risks of deformation and/or breakage at a junction zone between the front pillar 11 and the front side member 12.
- the connecting reinforcement 13 comprises a fixing part 132 of the web 131 to the front foot 11.
- the fixing part 132 contributes to the transmission of forces and to the reduction of the risks of deformation and/or breakage of the front spar 12 and/or the front foot 11, in particular at the junction zone.
- the fixing part 132 is simultaneously fixed to the web 131 and to the front foot 11.
- the fixing part 132 is placed at the junction zone between the front foot 11 and the front spar 12.
- the front leg 11 comprises a first half-shell and a second half-shell, the first half-shell and the second half-shell being connected together at a longitudinal flap and together forming a closed box inside which extends a front portion of the core 131 of the connecting reinforcement 13.
- Each half-shell extends along its own elongation axis, the half-shells forming the closed box between them.
- Each half-shell is connected to the other at their own longitudinal flap forming a connecting interface which extends along their own elongation axis.
- the first half-shell is fixed integrally to the second half-shell at their longitudinal flap, by welding. In a perpendicular plane, the first half-shell and the second half-shell form a closed contour.
- the fixing part 132 forms a gusset.
- the fixing part 132 comprises:
- the bearing face 1322 of the fixing part 132 is placed in abutment against the web 131 of the connecting reinforcement 13 and the edge 1321 of the fixing part 132 is placed in abutment against the front foot 11.
- the fixing part 132 forms a part interface between the connecting reinforcement 13 and the front foot 11.
- the fixing part 132 In a transverse plane and perpendicular to the proper elongation axis, the fixing part 132 has an “L” shaped profile.
- the rim 1321 is of the type of a folded edge which extends from a longitudinal edge of the bearing face 1322.
- the rim 1321 extends perpendicularly or almost perpendicularly relative to the bearing face 1322 of the fixing part 132.
- the rim 1321 is placed in abutment against the longitudinal flap of the first half-shell and/or the second half-shell of the front foot 11.
- the rim 1321 is placed in an intermediate position between the first half-shell and the second half-shell of the front foot 11;
- the fixing part 132 is fixed securely to the core 131 on the one hand and to the front foot 11 on the other hand.
- the fixing part 132 is fixed securely to the core 131 on the one hand and to the front foot 11 on the other hand.
- the fixing part 132 is fixed integrally to the core 131 by a plurality of rivets.
- Each rivet extends through the fixing part 132 and the core 131.
- the rivets extend through a plurality of holes 1323 provided on the bearing face 1322 of the fixing part 132;
- the fixing part 132 is fixedly attached to the front leg 11 by means of a plurality of weld points.
- the weld points connect the fixing part 132 and the front leg 11 together.
- the weld points are located along the edge 1321 of the fixing part 132.
- the weld points connect together, on the one hand, the edge 1321 of the fixing part 132 and, on the other hand, the longitudinal flap of the first half-shell and/or of the second half-shell forming the front leg 11;
- the fixing part 132 is formed of a metallic material.
- the material forming the fixing part 132 comprises steel.
- the fixing part 132 is obtained by stamping a folded sheet of constant thickness. Generally, a thickness of the fixing part 132 is greater than 2 mm. This configuration makes it possible to guarantee sufficient resistance in the event of frontal impacts.
- the invention relates to a reinforcement structure 1 for a motor vehicle, the reinforcement structure 1 comprising a front pillar 11, a front side member 12 extending along a specific elongation axis, a front part of the front spar 12 being fixed integrally to a rear part of the front foot 11, a connecting reinforcement 13 fixed to the front foot 11 and to the front spar 12, the connecting reinforcement 13 comprising a web 131 housed in the front spar 12 and extending along the proper elongation axis.
- the connecting reinforcement 13 comprises a fixing part 132 of the web 131 to the front foot 11 with a thickness greater than 1.5 mm in order to contribute to the reinforcement of a junction zone between the front foot 11 and the front spar 12.
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 |
|---|---|---|---|
| EP24712123.9A EP4688538A1 (fr) | 2023-03-31 | 2024-02-26 | Structure de renfort pour véhicule automobile |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2303159 | 2023-03-31 | ||
| FR2303159A FR3147235A1 (fr) | 2023-03-31 | 2023-03-31 | structure de renfort pour véhicule automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024200940A1 true WO2024200940A1 (fr) | 2024-10-03 |
Family
ID=86942497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2024/050245 Ceased WO2024200940A1 (fr) | 2023-03-31 | 2024-02-26 | Structure de renfort pour véhicule automobile |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4688538A1 (fr) |
| FR (1) | FR3147235A1 (fr) |
| WO (1) | WO2024200940A1 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2303159A2 (fr) | 1975-03-03 | 1976-10-01 | Peugeot & Renault | Silencieux pour moteur a combustion |
| US20030102697A1 (en) * | 2001-10-25 | 2003-06-05 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Vehicle body side structure |
| EP2055614A1 (fr) * | 2007-10-23 | 2009-05-06 | Peugeot Citroen Automobiles SA | Structure de véhicule automobile. |
| FR2933059A1 (fr) * | 2008-06-25 | 2010-01-01 | Peugeot Citroen Automobiles Sa | Insert de rigidification pour caisse de vehicule automobile |
| JP2020090221A (ja) * | 2018-12-06 | 2020-06-11 | トヨタ自動車株式会社 | フロントピラー構造 |
-
2023
- 2023-03-31 FR FR2303159A patent/FR3147235A1/fr active Pending
-
2024
- 2024-02-26 WO PCT/FR2024/050245 patent/WO2024200940A1/fr not_active Ceased
- 2024-02-26 EP EP24712123.9A patent/EP4688538A1/fr active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2303159A2 (fr) | 1975-03-03 | 1976-10-01 | Peugeot & Renault | Silencieux pour moteur a combustion |
| US20030102697A1 (en) * | 2001-10-25 | 2003-06-05 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Vehicle body side structure |
| EP2055614A1 (fr) * | 2007-10-23 | 2009-05-06 | Peugeot Citroen Automobiles SA | Structure de véhicule automobile. |
| FR2933059A1 (fr) * | 2008-06-25 | 2010-01-01 | Peugeot Citroen Automobiles Sa | Insert de rigidification pour caisse de vehicule automobile |
| JP2020090221A (ja) * | 2018-12-06 | 2020-06-11 | トヨタ自動車株式会社 | フロントピラー構造 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3147235A1 (fr) | 2024-10-04 |
| EP4688538A1 (fr) | 2026-02-11 |
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