EP4479275A1 - Armature de pare-chocs optimisée pour un choc piéton amélioré - Google Patents
Armature de pare-chocs optimisée pour un choc piéton amélioréInfo
- Publication number
- EP4479275A1 EP4479275A1 EP23703088.7A EP23703088A EP4479275A1 EP 4479275 A1 EP4479275 A1 EP 4479275A1 EP 23703088 A EP23703088 A EP 23703088A EP 4479275 A1 EP4479275 A1 EP 4479275A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reinforcement
- front face
- bumper
- designed
- frame
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/04—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section in a side-by-side arrangement
- B60R19/12—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section in a side-by-side arrangement vertically spaced
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R2019/186—Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R2019/1886—Bumper fascias and fastening means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components
Definitions
- the technical field concerns bumper frames designed to attach a bumper to a front face of a motor vehicle, the front faces having such a frame to support the bumper as well as the vehicles comprising such a front face.
- a new test protocol called improved pedestrian impact, consists in projecting a vehicle on a particular pole divided into three superimposed zones, simulating a leg of a pedestrian.
- the expected ideal behavior of the vehicle thus projected against such a post must be different according to the zone considered and offer a different rigidity according to the height considered. It is indeed necessary to meet the requirements of a repairability test, in particular by preserving the motor-fan unit in the upper part of the front face, but also to make it possible to limit the injuries likely to be caused to a leg of a pedestrian in the event of an impact.
- Vehicles equipped with a bumper reinforcement are already known from the prior art and make it possible to guarantee adequate behavior in the event of a reparable impact as well as in the event of a pedestrian impact.
- front faces remain could be improved, particularly with regard to their behavior in the event of an improved pedestrian impact.
- an object of the present invention is to provide a bumper support frame making it possible to improve the behavior in the event of an improved pedestrian impact by allowing a differentiation of the rigidity according to the height of impact on the front face.
- the present invention relates to a bumper support frame for the front face of a motor vehicle, designed to support, when it is fixed on the front face, a bumper reinforcement, the reinforcement comprising a transverse part designed to extend in a transverse direction of the front face, the reinforcement comprising at least one foot extending from the transverse part towards one end, suitable for ensuring fusible fixing of the bumper reinforcement on the armature, the armature being characterized in that it comprises at least one absorber element protruding from the said transverse part, each absorber element being designed to absorb, when the armature is mounted on the front face, a part of the energy of a front impact suffered by the front face while deforming in order to limit the recoil in the front face, under the effect of the front impact, of at least part of the bumper reinforcement fixed to the frame.
- the invention also relates to a vehicle front face comprising a frame according to the invention.
- the invention also relates to a vehicle comprising at least one front face according to the invention.
- a frame according to the invention makes it possible to assemble a front face of a vehicle according to the invention which has the known advantages for vehicles having a conventional frame.
- the breaking of the foot allows the recoil in the front face of the bumper reinforcement and therefore to guarantee adequate behavior in the event of a pedestrian impact.
- the presence of at least one absorber element makes it possible to absorb, in the upper part of the front face, an increased quantity of energy released during a front impact compared to a conventional frame and to limit recoil in the front face, in the direction of the fan assembly, the bumper reinforcement. Indeed, the retreat of the reinforcement towards the motor-fan assembly requires the prior deformation of each absorber element.
- the behavior of the front face during an improved pedestrian impact is therefore improved since the rigidity of the front face varies according to the height of the impact. Furthermore, the increased rigidity in the upper part of the front face, at the level of the transverse part, makes it possible to improve the rigidity perceived by a user of the vehicle.
- At least one absorber element has a fixing interface designed to allow the fixing of the bumper reinforcement on the absorber element.
- each absorber element forms an absorption box.
- each box has a frustoconical shape, in particular a frustoconical shape with a rectangular base.
- each end of each foot has indexing means designed to index and fix the reinforcement relative to the frame.
- the indexing means comprise a fastening strap.
- each fixing strap is fusible in order to break under the effect of a front impact suffered by the front face to release the bumper reinforcement.
- Figure 1 shows a perspective view of a bumper support frame according to the invention
- Figure 2 shows a perspective view of a front face showing a bumper reinforcement mounted on the frame of Figure 1;
- Figure 3 shows a detail view of the armature indexing means of Figure 1.
- a frame 1 bumper support according to the invention, illustrated in Figure 1, is intended to be mounted on a front face 2 of a motor vehicle, illustrated in Figure 2.
- the frame 1 is designed to be fixed on the metal structure of the front face 2.
- the frame 1 is designed to support, when it is fixed on the front face 2, a bumper reinforcement 3 and/or a bumper skin, not shown in the figures.
- the bumper reinforcement 3 allows to reinforce the bumper skin, in particular by stiffening certain areas of the latter.
- the frame 1 is, for example, made of molded plastic material.
- the bumper reinforcement 3 is, for example, made of molded plastic material.
- the reinforcement 1 comprises a transverse part 4 designed to extend along a transverse direction T, illustrated in FIG. 2, of the front face 2.
- the transverse part 4 is curved along the transverse direction T, as illustrated in FIGS. and 2.
- the reinforcement 1 extending from the transverse part 4, the reinforcement
- the reinforcement 1 has an upper part 5, substantially planar, designed to participate in the fixing of the frame 1 on the front face 2 and to cover at least in part a motor-fan unit (not shown) of the front face 2.
- the reinforcement 1 comprises at least one foot 6, in this case three feet 6, extending from the transverse part 4 towards an end 7, suitable for ensuring fusible fixing of the bumper reinforcement 3 on the armature 1 .
- Fuse fastener means a fastener designed to break in the event of a front impact, suffered by the front face 2, the intensity of which is greater than a predetermined threshold intensity. All of the ends 7 of feet 6 are interconnected by a lower crosspiece 8.
- each end 7 of each foot 6 has, for example, indexing means 9 making it possible to index and fix the reinforcement 3 with respect to armature 1 .
- indexing means 9 making it possible to index and fix the reinforcement 3 with respect to armature 1 .
- each foot 6 is shaped to break, in the event of a front impact suffered by the front face
- the armature 1 comprises at least one absorber element 10 projecting from said transverse part 4.
- the armature 1, illustrated in the figures has six absorber elements 10 divided into two groups arranged symmetrically along the transverse part 4.
- each absorber element 10 forms an absorption box 11 .
- each box 11 has a frustoconical shape, in particular a frustoconical shape with a rectangular base.
- Each absorber element 10 is designed to absorb, when the reinforcement 1 is mounted on the front face 2, part of the energy of a front impact undergone by the front face 2 by deforming in order to limit the recoil, in the front side 2 under the effect of the front impact, of at least part of the bumper reinforcement 3 fixed to the frame 1 .
- At least one absorber element 10 in this case the absorber elements 10 located on the edges of the transverse part 4 each have a fixing interface 12 designed to allow the fixing of the reinforcement 3 of the bumper on the absorber element 10.
- the attachment interface 12 has, for example, attachment holes 13 allowing the bumper reinforcement 3 to be screwed or clipped onto the attachment interface 12.
- each foot 6 of the reinforcement 1 is shaped to break and release the lower part of the reinforcement 3 of the bumper, while the recoil of the upper part of the reinforcement 3 is limited by the absorber elements 10.
- This makes it possible, for example, to limit injuries to the shins of a pedestrian while limiting the recoil of the upper part of the reinforcement 3, which thus remains at a distance from the motorized fan unit. This improves the behavior in terms of repairability of the vehicle according to the invention.
- each foot 6 has the shape of a U-section section profile, the indexing means 9 comprising a fastening strap 14 at the end 7 of each foot 6.
- the indexing of the bumper reinforcement 3 on the frame 1 is obtained by form complementarity, allowing the fitment of the bumper reinforcement 3 in the U-section profile of the foot 6, and the indexing means 9 comprise bearing surfaces 15 made on each foot 6, designed to form stops when the reinforcement 3 is assembled on the reinforcement 1.
- each fixing strap 14 is fusible in order to break under the effect of a front impact suffered by the front face 2 to release the bumper reinforcement 3.
- Such a result is obtained, for example, by at least one thinning of material 16, visible in Figure 3, on each fastening strap 14.
- the reinforcement 1 according to the invention makes it possible to produce a front face 2 according to the invention whose rigidity varies according to the height impacted.
- the front face 2 allows a significant setback of the bumper reinforcement 3 by the breakage of each foot 6 while in the upper part, each absorber element 10 makes it possible to limit the recoil towards the motorized fan unit of the reinforcement 3.
- the behavior of a vehicle according to the invention is therefore optimized for an improved pedestrian impact.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Vibration Dampers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2201336A FR3132680B1 (fr) | 2022-02-15 | 2022-02-15 | Armature de pare-chocs optimisée pour un choc piéton amélioré. |
| PCT/FR2023/050040 WO2023156720A1 (fr) | 2022-02-15 | 2023-01-11 | Armature de pare-chocs optimisée pour un choc piéton amélioré |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4479275A1 true EP4479275A1 (fr) | 2024-12-25 |
Family
ID=81326355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23703088.7A Pending EP4479275A1 (fr) | 2022-02-15 | 2023-01-11 | Armature de pare-chocs optimisée pour un choc piéton amélioré |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4479275A1 (fr) |
| CN (1) | CN118742464A (fr) |
| FR (1) | FR3132680B1 (fr) |
| WO (1) | WO2023156720A1 (fr) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2201336A1 (en) | 1972-10-03 | 1974-04-26 | Raffinage Cie Francaise | Bitumens modified by dienophilic cpds - useful as adhesion improvers for bitumen coatings and stabilisers for bitumen emulsions |
| US20050087999A1 (en) * | 2003-10-22 | 2005-04-28 | Campbell Mark H. | Integrated bumper and upper fascia components of a motor vehicle |
| US6997490B2 (en) * | 2003-07-22 | 2006-02-14 | Netshape International Llc | Integrated bumper energy absorber and fascia support component |
| FR2919568B1 (fr) * | 2007-08-03 | 2010-01-22 | Faurecia Bloc Avant | Face avant de vehicule automobile avec une poutre rigide interposee entre les absorbeurs de chocs et les longerons principaux |
| US8196979B2 (en) * | 2009-11-06 | 2012-06-12 | Shape Corp. | Energy absorber with lobes providing uniform pedestrian impact |
| FR3093048B1 (fr) * | 2019-02-27 | 2022-09-02 | Renault Sas | Dispositif de protection pour un véhicule automobile. |
-
2022
- 2022-02-15 FR FR2201336A patent/FR3132680B1/fr active Active
-
2023
- 2023-01-11 EP EP23703088.7A patent/EP4479275A1/fr active Pending
- 2023-01-11 CN CN202380021990.4A patent/CN118742464A/zh active Pending
- 2023-01-11 WO PCT/FR2023/050040 patent/WO2023156720A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN118742464A (zh) | 2024-10-01 |
| WO2023156720A1 (fr) | 2023-08-24 |
| FR3132680A1 (fr) | 2023-08-18 |
| FR3132680B1 (fr) | 2026-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20240725 |
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| AK | Designated contracting states |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17Q | First examination report despatched |
Effective date: 20250708 |