EP4093652A1 - Véhicule automobile disposant d'un moyen de dégagement de la roue avant en cas de choc frontal - Google Patents
Véhicule automobile disposant d'un moyen de dégagement de la roue avant en cas de choc frontalInfo
- Publication number
- EP4093652A1 EP4093652A1 EP21705242.2A EP21705242A EP4093652A1 EP 4093652 A1 EP4093652 A1 EP 4093652A1 EP 21705242 A EP21705242 A EP 21705242A EP 4093652 A1 EP4093652 A1 EP 4093652A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connecting piece
- support element
- relief
- motor vehicle
- vehicle
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000004033 plastic Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000011324 bead Substances 0.000 claims description 3
- 210000001364 upper extremity Anatomy 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011076 safety test Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
- B62D21/152—Front or rear frames
-
- 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
-
- 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
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
-
- 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
- B62D25/08—Front or rear portions
- B62D25/16—Mud-guards or wings; Wheel cover panels
Definitions
- the present invention relates to a motor vehicle, more particularly to a motor vehicle reinforced to protect users in the event of a frontal impact.
- the wheel is quickly braced between the test barrier and the front foot and can follow a scenario called crushing on the front foot (in which the wheel s 'fit into the front pillar) or a so-called avoidance scenario (in which the wheel is released towards the outside of the vehicle).
- a scenario called crushing on the front foot in which the wheel s 'fit into the front pillar
- a so-called avoidance scenario in which the wheel is released towards the outside of the vehicle.
- document FR 3,058,110 describes a motor vehicle having a reinforcement fixed to the front foot and to the wheel arch.
- This reinforcement makes it possible to limit the intrusion of the front wheel into the passenger compartment in the event of a frontal collision by interfering with the front wheel.
- the rear of the front wheel comes to press on the reinforcement fixed on the foot and depending on the power of the impact, the reinforcement makes it possible to prevent an opening of the rebate of the front foot.
- this reinforcement is therefore useful.
- document FR 2994 138 describes an arrangement for a motor vehicle comprising a wheel and a safety system, consisting of a wheel arch screen interposed between the area to be protected and the wheel.
- the safety system is configured to vary between an active state and an inactive state in which the safety system respectively opposes and does not oppose movement of the wheel towards the passenger compartment.
- the force entry on the front foot is via the third effort channel.
- the force entry is also made via the front wheel by direct contact following a bracing between the rim of said wheel and the front foot in the case of a retreat of the wheel with bursting of the tire under the effect of the forces. suffered.
- document FR 2892087 describes a front structure of a motor vehicle adapted to prevent the intrusion of a wheel into the passenger compartment in the event of a frontal impact.
- the side members have been designed to be able to bend during a collision, which allows the front wheel to be shifted from the passenger compartment.
- this solution does not make it possible to completely ensure the safety of the passenger compartment since the folding of the side members will necessarily have an influence on the integrity of the latter.
- Another way is to ensure that the front wheel disengages from the wheel arch during a collision.
- document FR 2892691 describes a front structure of a motor vehicle with a steering rack which has been provided with guide means allowing, in the event of an impact, to act on the rods connecting the wheel and the rack with the aim of point the rear of the front wheel outward.
- these guide means which are in fact recesses of the cross member in an oblique direction in each of which is engaged a fixing element of the rack, will guide the movement of the rack so that the rod driven in this movement causes the front wheel to pivot so that the rear thereof is completely free from the wheel arch.
- these guide means limit the movement of the rack in a direction predefined by the direction of the recesses.
- this type of guide means only solves the problem for the front left wheel.
- the present invention therefore aims to provide a motor vehicle providing a solution to the problems encountered in the prior art.
- the invention aims to provide a vehicle designed to promote clearance of the front wheel or wheels from the wheel arch during a frontal collision, for example of the low overlap type.
- the invention relates to a motor vehicle comprising a front wheel provided with a rim showing an inner sidewall, and a base structure comprising a front stretcher, a front foot and a connecting piece between said front stretcher and said front foot, the connecting piece being located at the rear of the front wheel, the vehicle being remarkable in that the connecting piece shows a support element with a relief projecting in the direction of the front of the vehicle, said relief extending in the transverse direction of the vehicle
- the invention provides a vehicle provided with passive means promoting release of the front wheel to the outside in the event of a violent frontal impact , by example in the event of a frontal impact with weak overlap.
- the invention proposes to add a volume (by means of a relief) at the level of the connecting piece between the front stretcher and the front foot.
- This relief is configured (by its shape, its location and its dimensions) so as not to hinder the wheel in its travel under normal driving conditions.
- the relief is configured (by its shape, its location and its dimensions) to come into contact with the edge of the front inner flank (that is, that is to say, prior to) that the front foot engages between the two inner and outer sides of the rim of the wheel.
- the engagement of the front foot between the flanks of the rim prevented the subsequent release of the wheel to the outside by blocking the pivoting movement of the latter.
- the response is to allow the internal flank to come into contact with the structure of the vehicle before the front foot enters the air gap formed by the two flanks of the rim.
- the backward movement of the front wheel in the direction of the front foot is thus limited by the presence of said relief or volume, and the front wheel is therefore free to perform the pivoting movement necessary for its release towards the outside of the vehicle.
- said relief has an elongated shape between a first end located on the side of the front stretcher and a second end located on the side of the front foot, the width of the relief being greater at the second end than level of the first.
- the connecting piece showing a curved shape
- the relief follows the curved shape of said connecting piece.
- the curved shape of the relief will guide the pivoting of the wheel towards the outside of the vehicle
- said relief protrudes in the direction of the front of the vehicle at a rate of 1 mm to 4 mm relative to the surface of the connecting piece, more preferably between 1.5 mm and 3.5 mm, again more preferably between 2 mm and 3 mm.
- said relief protrudes towards the front of the vehicle constantly over the entire length of said relief.
- said support element extends over at least 80% of the length of said connecting piece, more preferably over at least 85% of the length, or over at least 90% of the length, or at least 95% of the length, or 100% of the length.
- the support element is integral with the connecting piece; preferably, the relief shown by the support element is formed by stamping the connecting piece.
- the support element is a part attached to said connecting part; preferably, said support element is fixed to the connecting piece by at least one screw, at least one weld bead and / or at least one weld point.
- at least one of the following characteristics can be used to define the supporting element:
- the support element comprises at least one stiffening rib; preferably, the support element comprises at least one fixing lug and the stiffening rib or ribs are arranged on the fixing lug or lugs.
- the support element is a profile; preferably, a profile with a U or uppercase omega section.
- the support element is made of steel with very high elastic limit or steel with high elastic limit; or the supporting element is made of plastic and / or aluminum.
- the vehicle further comprises an apron adjacent to the front foot and delimiting the passenger compartment of the vehicle, said vehicle being remarkable in that a reinforcing piece is fixed at least front foot and apron; preferably, the reinforcement piece has a flange.
- Figure 1 is a view of the wheel arch of the vehicle according to the invention.
- Figure 2 is a view of the support element according to the invention.
- Figure 1 shows a front wheel arch of the vehicle, viewed from the front to the rear of the vehicle.
- the front wheel has not been shown, which makes it possible to see the underbody structure of the vehicle made up of a front stretcher 1, a front foot 3 and a connecting piece 5 between the front stretcher 1 and the front foot 3.
- the connecting piece 5 is located at the rear of the front wheel. So as to favor the scenarios of release the front wheel towards the outside of the vehicle during a frontal collision, the connecting piece 5 shows a support element 7 with a relief 9 projecting towards the front of the vehicle and s 'extending in the transverse direction of the vehicle.
- the support element 7 is therefore configured so that when the front wheel recedes in the direction of the front foot, the inner flank of the rim of the front wheel is placed in support on the relief 9 preventing the front foot from fit between the two inner and outer sidewalls of the front wheel.
- a definite advantage of such a configuration is that the support element can be integrated both on the left side and on the right side of the vehicle.
- the two front wheels of the vehicle have the same system for disengaging the wheel in the event of a frontal collision with partial overlap.
- Another advantage is that it is a passive, inexpensive safety system that is easy to implement even on existing and lightweight vehicles.
- Figure 2 shows the support element 7 from the rear of the vehicle.
- the relief 9 therefore appears to sink.
- the shape of the relief 7 is elongated between a first end 11 located on the side of the front stretcher 1 (visible in FIG. 1) and a second end 13 located on the side of the front foot 13 (visible in FIG. 1). So that the rear of the rim does not come into contact with the front foot 13 (visible in Figure 1), the width of the second end 13 is wider than the width of the first end 11, so that when the wheel escapes, the rim of the latter hits this second end 13 and is deflected outwards.
- the connecting piece 5 has a curved shape and the shape of the relief 7 also has a curvature so as to follow the shape of the connecting piece 5.
- the relief 9 shown by the support element 7 can be spaced from 1 mm to 4 mm, more preferably from 2 mm to 3 mm.
- the volume thus created by the relief allows the wheel to deflect outwards.
- the bearing surface which will come into contact with the front wheel on the relief is arranged at a constant distance along the surface of the connecting piece 5.
- the support element can extend over at least 80% of the length of said connecting piece 5, or over at least 90% of the length, or over 100% of the length.
- a first way to incorporate this device on the vehicle is to integrate it into the connecting piece 5 directly, for example by creating the relief by stamping.
- This embodiment has the advantage of not having to add any part to the structure of the vehicle underbody and can be used during the manufacture of a new vehicle. This embodiment does not add weight to the vehicle.
- the support element 7 may be a part attached to said connecting piece 5, preferably fixed by at least one screw, at least one weld bead and / or at least one weld point. It is thus possible to equip vehicles already on the market with this security system.
- the support element 7 can comprise at least one stiffening rib 15, preferably arranged on the fixing lug (s) 17 of the support element.
- the support element may be a profile, in particular a profile with a U-shaped section or in the shape of a capital omega. The profile is arranged so that its section is open towards the connecting piece.
- the support element 7 is made of steel, the steel is preferably selected from steels with high elastic limit (HLE), steels with very high elastic limit (THLE) or steels with ultra high elastic limit ( UHLE). These steels have a fine-grained structure and exhibit excellent mechanical characteristics (elastic limit, fatigue resistance and resilience) as well as good formability.
- HLE high elastic limit
- THLE steels with very high elastic limit
- UHLE ultra high elastic limit
- mild steels show an elastic limit ranging from 300 to 350 MPa
- high elastic limit steels show an elastic limit ranging from 400 to 700 MPa
- very high limit steels yield strength show a yield strength ranging from 800 to 1000 MPa
- ultra high yield strength steels show a yield strength of 1100 to 1500 MPa.
- the yield strength is measured according to ISO 6892-1: 2016.
- the support element 7 is made of plastic and / or aluminum, preferably a composite material based on plastic and aluminum.
- the presence of at least one stiffening rib 15 is particularly recommended when the support element 7 is made of plastic and / or aluminum.
- the lightness of these materials is an interesting property in the design of motor vehicles, especially from an ecological point of view.
- An example of the plastic used is dense polypropylene foam.
- the presence of the support element 7 has proven its usefulness when a safety test involving a low overlap frontal collision was carried out at a speed of 64 km / h.
- a reinforcing piece 21 by example in DP450 steel, or in dense polypropylene foam, at least at the level of the front foot 3 and the apron 19 of the vehicle. More details about this reinforcing piece 21 are available in document FR 3058 110, the subject of which is incorporated here by reference.
- the reinforcing piece 21 comprises a flange 23 which makes it possible to engage the front wheel during a frontal collision.
- the relief 9 shown by the support element 7 extends towards the front of the vehicle over a distance equivalent to the distance reached by the extension of the flange 23 towards the front of the vehicle, the flange 23 and the relief 9 shown by the element support 7 can both participate in the release of the front wheel during a frontal collision with partial overlap. Indeed, in this case, the bearing volume formed by the presence of the relief 9 on the connecting piece 5 is extended by the flange 23 of the reinforcing piece 21.
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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2000615A FR3106313B1 (fr) | 2020-01-22 | 2020-01-22 | Véhicule automobile disposant d’un moyen de dégagement de la roue avant en cas de choc frontal |
PCT/FR2021/050080 WO2021148742A1 (fr) | 2020-01-22 | 2021-01-18 | Véhicule automobile disposant d'un moyen de dégagement de la roue avant en cas de choc frontal |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4093652A1 true EP4093652A1 (fr) | 2022-11-30 |
Family
ID=70154681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21705242.2A Pending EP4093652A1 (fr) | 2020-01-22 | 2021-01-18 | Véhicule automobile disposant d'un moyen de dégagement de la roue avant en cas de choc frontal |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230099905A1 (fr) |
EP (1) | EP4093652A1 (fr) |
FR (1) | FR3106313B1 (fr) |
WO (1) | WO2021148742A1 (fr) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2000615A1 (fr) | 1968-01-23 | 1969-09-12 | Schmitz Josef | |
DE19836851C1 (de) * | 1998-08-14 | 2000-03-30 | Daimler Chrysler Ag | Schutzanordnung an einem Radlauf einer Kraftwagen-Rohbaustruktur |
JP2002154458A (ja) * | 2000-11-24 | 2002-05-28 | Fuji Heavy Ind Ltd | 車体前部構造 |
FR2892087B1 (fr) | 2005-10-14 | 2008-02-01 | Renault Sas | Structure avant du vehicule automobile adaptee pour empecher l'intrusion d'une roue dans l'habitacle en cas de choc frontal. |
FR2892691B1 (fr) | 2005-10-27 | 2008-02-08 | Renault Sas | Structure avant d'un vehicule automobile equipee de moyens pour empecher l'intrusion d'une roue dans l'habitacle en cas de choc frontal |
CN104114438B (zh) * | 2012-02-13 | 2016-09-21 | 本田技研工业株式会社 | 车身下部构造 |
FR2994138B1 (fr) | 2012-08-01 | 2015-06-26 | Renault Sa | Systeme de securite s’opposant a un mouvement d’une roue en cas de choc |
KR101575320B1 (ko) * | 2013-12-16 | 2015-12-07 | 현대자동차 주식회사 | 차체 보강구조 |
US9187133B2 (en) * | 2014-03-03 | 2015-11-17 | Honda Motor Co., Ltd. | Front pillar construction having reinforcement member for vehicle frame |
JP6112083B2 (ja) * | 2014-08-21 | 2017-04-12 | トヨタ自動車株式会社 | 車体前部構造 |
JP6083423B2 (ja) * | 2014-09-19 | 2017-02-22 | マツダ株式会社 | 車両の側部車体構造 |
DE102014018760B3 (de) * | 2014-12-16 | 2016-02-18 | Audi Ag | Fahrzeugkarosserie mit einem das Eindrehen eines Fahrzeugrades in Richtung der Fahrgastzelle verhindernden Zugelements bei einem teilüberdeckten Frontalaufprall |
FR3058110B1 (fr) | 2016-10-27 | 2020-07-24 | Peugeot Citroen Automobiles Sa | Renfort de la structure avant d’un vehicule automobile pour choc frontal a faible recouvrement |
US10077014B1 (en) * | 2017-03-20 | 2018-09-18 | GM Global Technology Operations LLC | Body-mounted tire blocker assembly |
FR3104120B1 (fr) * | 2019-12-09 | 2023-06-16 | Psa Automobiles Sa | Dispositif de fixation sur un châssis de véhicule automobile, de l'extrémité arrière de brancards d'un berceau moteur recevant une motorisation électrique de propulsion du véhicule. |
-
2020
- 2020-01-22 FR FR2000615A patent/FR3106313B1/fr active Active
-
2021
- 2021-01-18 WO PCT/FR2021/050080 patent/WO2021148742A1/fr unknown
- 2021-01-18 US US17/790,452 patent/US20230099905A1/en active Pending
- 2021-01-18 EP EP21705242.2A patent/EP4093652A1/fr active Pending
Also Published As
Publication number | Publication date |
---|---|
US20230099905A1 (en) | 2023-03-30 |
FR3106313B1 (fr) | 2024-04-19 |
WO2021148742A1 (fr) | 2021-07-29 |
FR3106313A1 (fr) | 2021-07-23 |
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Owner name: STELLANTIS AUTO SAS |