WO2024088763A1 - Châssis modulaire de véhicule automobile - Google Patents
Châssis modulaire de véhicule automobile Download PDFInfo
- Publication number
- WO2024088763A1 WO2024088763A1 PCT/EP2023/078229 EP2023078229W WO2024088763A1 WO 2024088763 A1 WO2024088763 A1 WO 2024088763A1 EP 2023078229 W EP2023078229 W EP 2023078229W WO 2024088763 A1 WO2024088763 A1 WO 2024088763A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pair
- corner elements
- chassis
- profiles
- central floor
- 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
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/07—Understructures, i.e. chassis frame on which a vehicle body may be mounted wide-hipped frame type, i.e. a wide box-shaped mid portion with narrower sections extending from said mid portion in both fore and aft directions
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
Definitions
- the present invention relates to a modular motor vehicle chassis.
- the invention belongs to the field of motor vehicle chassis and is applicable to any rolling means of transport.
- the elements making up current platforms are often made of pressed sheet metal in materials with a high mass.
- the shape of many elements making up current platforms differs depending on the type of vehicle to be produced, which maintains a level of diversity and therefore high manufacturing costs.
- the present invention aims to remedy the aforementioned drawbacks of the prior art.
- the present invention proposes a motor vehicle chassis, comprising a central floor, a front part fixed to a first end of the central floor and a rear part fixed to a second end of the central floor, remarkable in that: the floor central has four invariant corner elements whatever the type of vehicle to be produced; the four corner elements are made of aluminum, comprise two front corner elements and two rear corner elements and are connected, on the one hand, by a pair of longitudinal aluminum profiles each connecting a front corner element and the rear corner element which faces it and on the other hand, by a pair of front and rear transverse aluminum profiles, the front transverse profile connecting the front corner elements and the rear transverse profile connecting the rear corner elements, the length of the longitudinal profiles and the transverse profiles varying depending on the type of vehicle to be produced; the front part comprises a pair of front side members connecting the front part to the central floor and at least one front cross member extending orthogonally between the front side members and the rear part comprises a pair of rear side members and at least one rear cross member extending orthogonally between the rear spars
- chassis not only does the modular nature of the chassis according to the present invention make it possible to use this chassis to produce various types of vehicles, with simple modifications of its dimensions, but also, the use of invariant corner elements allows to significantly reduce diversity and therefore costs and manufacturing times. Furthermore, the use of aluminum corner elements and aluminum profiles makes vehicles lighter. The same chassis therefore makes it possible to produce lighter vehicles more quickly with different powertrains, different ground connections and different aesthetics, while being less expensive.
- the four corner elements are blocks made from aluminum casting.
- the pair of longitudinal profiles and the pair of transverse profiles come from an aluminum extrusion die.
- the pair of longitudinal profiles is a pair of sills
- the front transverse profile is fixed to the pair of sills between the front corner elements
- the rear transverse profile is fixed to the pair of sills between the rear corner elements.
- the pair of flaps is provided with a network of internal reinforcing ribs.
- This network of ribs is easily adaptable depending on the rigidity of the body desired.
- the pair of flaps is fitted into cavities provided on the four corner elements.
- This assembly is particularly simple to make and of good quality.
- the pair of flaps is also fixed to the corner elements by glue and by at least one rivet.
- the front part and the rear part are fixed to the central floor by screwing and/or bolting.
- the assembly of the central floor and the front and rear parts is therefore particularly simple to carry out and reinforces the modular nature of the chassis.
- the present invention also proposes a motor vehicle, remarkable in that it comprises a chassis as briefly described above.
- the present invention also proposes a range of at least two types of motor vehicles each comprising a chassis as briefly described above, remarkable in that the front and rear corner elements are invariant between the two types of vehicles, while at least one pair of profiles chosen from either the longitudinal profiles or the front and rear transverse profiles, has a different length for each of the two types of vehicles.
- FIG. 1 is a schematic representation of a reference classically used in automobile design
- FIG. 2 is a schematic perspective view of a motor vehicle chassis according to the present invention, the front of the vehicle being shown on the left in the figure, in a particular embodiment;
- FIG. 3 is a schematic sectional view of a sill included in a motor vehicle chassis according to the present invention, in a particular embodiment
- FIG. 4A is a schematic sectional view showing the attachment between a flap and a rear corner element in a motor vehicle chassis according to the present invention, in a particular embodiment
- FIG. 4B is a schematic perspective view showing the attachment between a flap and a rear corner element in a motor vehicle chassis according to the present invention, in a particular embodiment
- FIG. 5 is a schematic view showing the attachment between a front spar and a front corner element in a motor vehicle chassis according to the present invention, in a particular embodiment
- FIG. 6 is a schematic view showing the attachment between the rear part and the central floor in a motor vehicle chassis according to the present invention, in a particular embodiment.
- Figure 1 shows a direct orthonormal coordinate system XYZ classically used in automobile design and which will be used in the present description.
- the X axis designates the longitudinal front-to-rear direction of the vehicle, facing backwards.
- the Y axis designates the transverse direction and is oriented towards the right of the vehicle.
- the Z axis designates the vertical direction and is oriented upwards.
- FIG. 2 shows a chassis 10 of a motor vehicle conforming to the present invention, in a particular embodiment.
- the chassis 10 comprises a central floor 12, a front part 14 fixed to a first end of the central floor 12 and a rear part 16 fixed to a second end of the central floor 12.
- the front part 14 and the rear part 16 can be fixed to the central floor 12 by screwing and/or bolting.
- the central floor 12 comprises four corner elements 18, which are invariant, that is to say of the same dimensions, of the same shape and made of the same material, whatever the type of vehicle. to be made from chassis 10.
- the four corner elements 18 comprise two front corner elements 180 symmetrical with respect to the plane XZ and two rear corner elements 182 symmetrical with respect to the plane XZ.
- the four corner elements 18 are made of aluminum and are typically made up of blocks resulting from an aluminum foundry process. In a classic foundry manner, this process conditions the curves and connection angles of the exterior surfaces of the four corner elements.
- the four corner elements 18 are connected by a pair of longitudinal profiles 20 extending in the front-rear longitudinal direction left-right Y.
- the term “profile” means that these parts have a constant section.
- Each profile of the pair of longitudinal profiles 20 connects a front corner element 180 and the rear corner element 182 which faces it.
- the front transverse profile 22 connects the two front corner elements 180 together and the rear transverse profile 22 connects the two rear corner elements 182 together.
- the profiles 20 and 22 are made of aluminum, for example extruded aluminum, that is to say that the profiles 20 and 22 can come from an aluminum extrusion die.
- the lengths of the profiles 20 and 22 vary from one type of vehicle to another within the same range of vehicles, following the direction of the arrows Fx and F Y.
- the pair of longitudinal profiles 20 is for example a pair of flaps.
- each flap 20 connects a front corner element 180 and the rear corner element 182 which faces it.
- the pair of transverse profiles 22 is orthogonal to the pair of flaps 20.
- the front transverse profile 22 is fixed to the pair of flaps 20 between the two front corner elements 180 and the rear transverse profile 22 is fixed to the pair of flaps 20 between the two rear corner elements 182.
- the front part 14 comprises a pair of front spars 24 extending in the front-rear longitudinal direction
- the interface ensures the junction between the front side members 24 and the front corner elements 180.
- the rear part 16 comprises a pair of rear spars 25 extending in the front-rear longitudinal direction
- the interface ensures the junction between the rear longitudinal members 25 and the rear corner elements 182.
- the lengths of the front and rear longitudinal members 24, 25 and the front and rear crossmembers 26, 27 vary from one type of vehicle to another, within the same range of vehicles, following the direction of the arrows FXAV and FYAV for the front part 14 and following the direction of the arrows FXAR and FYAR for the rear part 16.
- the central floor 12 is delimited, at the front, by an apron 28 placed between the front corner elements 180.
- the lower part of the apron 28 is constituted by the front transverse profile 22.
- the apron 28 forms a partition separating the passenger compartment from the front compartment of the vehicle.
- the central floor 12 comprises a central longitudinal tunnel TC which extends in the front-rear longitudinal direction left-right transversal Y and connect the central tunnel TC on each of its sides to the longitudinal profiles or side rails or sills 20.
- Figure 5 shows the attachment between a front spar 24 and a front corner element 180, in a particular embodiment.
- Figure 5 represents the left front spar 24 and the left front corner element 180.
- the attachment between the right front spar 24 and the right front corner element 180 is similar, given that the left and right front corner elements 180 and the left and right front spars 24 are symmetrical with respect to the longitudinal direction front-back
- a front interface part 50 has a first surface 51 fixed to the front spar 24, for example by one or more rivets 510 and a second surface 52 fixed to the front interface element 180 by a or several 520 screws.
- Figure 6 shows the attachment between the rear part 16 and the central floor 12 and more particularly the attachment between a rear spar 25 and a rear corner element 182, in a particular embodiment.
- Figure 6 represents the left rear spar 25 and the left rear corner element 182.
- the attachment between the right rear spar 25 and the right rear corner element 182 is similar, since the left and right rear corner elements 182 and the left and right rear spars 25 are symmetrical with respect to the longitudinal direction front-back
- a first rear interface part 60 connects, via one or more rivets 600, the longitudinal profile 20, the rear transverse profile 22 and the rear corner element 182.
- a second rear interface part 62 connects, via one or more screws 620, the rear spar 25, the rear transverse profile 22 and the rear corner element 182.
- the interior of each longitudinal profile or lateral spar or sill 20, also called the core of the sill can be provided with a network of ribs 30.
- the ribs 30 internal contribute to the reinforcement of the flaps 20.
- front and rear transverse profiles 22 and/or the front and rear longitudinal members 24, 25 and/or the front and rear crosspieces 26, 27 with a network of reinforcing ribs.
- the flaps 20 of the pair of flaps are fitted at each of their ends into cavities provided on the four corner elements 18.
- the pair of flaps 20 can also be fixed to the corner elements 18 by glue and by one or more rivets.
- FIGs 4A and 4B show by way of example the attachment between a flap 20 and a rear corner element 182.
- the method of attachment between a flap 20 and a front corner element 180 is similar.
- the rear end of each flap of the pair of flaps 20 is fitted into a cavity provided in the rear corner element 182 which receives this end.
- the shape of the walls of the cavity and the shape of the cross section of the flap 20 which is fitted there are complementary.
- each flap of the pair of flaps 20 is also fixed to the rear corner element 182 which receives this rear end by glue (the parts glued are indicated in Figure 4A by the reference C) and by at least one rivet 40.
- the adjustable nature of the dimensions of the flaps 20, the front and rear transverse profiles 22, the front and rear longitudinal members 24, 25 and the front and rear crosspieces 26, 27, different types of vehicles, having different engines, different connections to the ground and different aesthetics, can be produced from the frame 10 according to the invention, without modifying the corner elements 18, the frame 10 being further lightened thanks to the corner elements 18 and the longitudinal and transverse profiles 20, 22 all made of aluminum.
- the invention proposes a range of at least two types of motor vehicles conforming to the invention each comprising a chassis 10 as described above and in this range, the front corner elements 180 and the elements of rear angle 182 are invariant between the various types of vehicles, while at least one pair of profiles chosen from either the longitudinal profiles 20 or the transverse profiles 22 front and rear, has a different length for each of the various types of vehicles .
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23786116.6A EP4608700A1 (fr) | 2022-10-26 | 2023-10-11 | Châssis modulaire de véhicule automobile |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2211118A FR3141429B1 (fr) | 2022-10-26 | 2022-10-26 | Châssis modulaire de véhicule automobile |
| FRFR2211118 | 2022-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024088763A1 true WO2024088763A1 (fr) | 2024-05-02 |
Family
ID=84819988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/078229 Ceased WO2024088763A1 (fr) | 2022-10-26 | 2023-10-11 | Châssis modulaire de véhicule automobile |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4608700A1 (fr) |
| FR (1) | FR3141429B1 (fr) |
| WO (1) | WO2024088763A1 (fr) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2049567A (en) * | 1979-05-25 | 1980-12-31 | Fiat Auto Spa | Skeletal load-bearing structures for motor vehicles |
| WO2014063687A2 (fr) * | 2012-10-24 | 2014-05-01 | Ksm Castings Group Gmbh | Système modulaire |
| EP3960589A1 (fr) * | 2020-09-01 | 2022-03-02 | Hyundai Mobis Co., Ltd. | Module de plate-forme de châssis pour véhicule électrique |
-
2022
- 2022-10-26 FR FR2211118A patent/FR3141429B1/fr active Active
-
2023
- 2023-10-11 WO PCT/EP2023/078229 patent/WO2024088763A1/fr not_active Ceased
- 2023-10-11 EP EP23786116.6A patent/EP4608700A1/fr active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2049567A (en) * | 1979-05-25 | 1980-12-31 | Fiat Auto Spa | Skeletal load-bearing structures for motor vehicles |
| WO2014063687A2 (fr) * | 2012-10-24 | 2014-05-01 | Ksm Castings Group Gmbh | Système modulaire |
| EP3960589A1 (fr) * | 2020-09-01 | 2022-03-02 | Hyundai Mobis Co., Ltd. | Module de plate-forme de châssis pour véhicule électrique |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4608700A1 (fr) | 2025-09-03 |
| FR3141429A1 (fr) | 2024-05-03 |
| FR3141429B1 (fr) | 2025-05-02 |
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