EP2282915A1 - Dispositif d'absorption de choc et face avant comportant un tel dispositif - Google Patents
Dispositif d'absorption de choc et face avant comportant un tel dispositifInfo
- Publication number
- EP2282915A1 EP2282915A1 EP09749821A EP09749821A EP2282915A1 EP 2282915 A1 EP2282915 A1 EP 2282915A1 EP 09749821 A EP09749821 A EP 09749821A EP 09749821 A EP09749821 A EP 09749821A EP 2282915 A1 EP2282915 A1 EP 2282915A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bumper beam
- shock
- shock absorbing
- absorbing device
- connecting ends
- 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
- 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
- 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
- B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
- B60R2019/1813—Structural beams therefor, e.g. shock-absorbing made of metal
- B60R2019/182—Structural beams therefor, e.g. shock-absorbing made of metal of light metal, e.g. extruded
-
- 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
- B60R2019/1866—Cellular structures
Definitions
- Shock absorbing device and front face comprising such a device
- the invention relates to a shock absorbing device, in particular those used in the automotive field and a front end equipped with such a device.
- the bumper beam has a central portion and so-called ends of iiaison, the central portion being offset relative to the connecting ends and the connecting ends of the bumper beam being secured to the fixing plates by means of reported links .
- a bumper beam has several functions. It participates in the structure of the vehicle and protects the passengers as well as the equipment of the motor vehicle in the event of impact with an external obstacle. In addition, the bumper beam also has the function of reducing the aggressiveness of the vehicle, including pedestrians, absorbing some of the energy of the shock so as to minimize the severity of the injuries inflicted to them.
- DE 10 2005 017 956 discloses a shock absorbing device as described above.
- a bumper beam in which is fitted a shock absorber so as to form, by combination of said beam and said absorber, repairability shock absorbers.
- shock absorber repairability means an absorber used for the absorption of so-called corner shocks, parking or insurance, that is to say an absorber which, for a shock of this type and having a quantity of energy to absorb of the order of 10,000 Joules including about 7,000 Joules to be absorbed by a set, said high way, integrating the beam, the shock absorber repairable and a complementary shock absorber, such as a shock absorber provided in front the repairable shock absorber and the beam, said pedestrian impact absorber, can absorb about 2,700 Joules while the rest of the energy will be absorbed by the beam and the other complementary shock absorber.
- a device as described in the document cited above is not satisfactory. Indeed, in such a case, it is necessary to assemble several elements to form the repairability shock absorption device and the different parts must be accurately calibrated so as to fit properly.
- the insurance premium can be calculated from the cost of these repairs.
- shock absorbing devices In order to comply with these regulations, the design of the shock absorbing devices must be modified to incorporate new elements such as energy absorbers that come to burden the overall cost of shock absorbing devices. This causes difficulties in terms of raw material costs as well as assembly costs.
- the invention aims to improve the situation.
- the invention proposes a shock absorbing device as described above further comprising a so-called central shock absorber and so-called shock absorbers repair absorbers and wherein the repairability shock absorbers are distinct from said connection ends of the bumper beam.
- a device according to the invention allows an increased modularity of the shock absorbing device according to the type of motor vehicle and according to the different standards to be respected.
- a front face is a structural element comprising a frame capable of supporting various equipment of the vehicle, such as, for example, headlamps, turn signals, buzzer, heat exchanger and / or complete cooling module.
- a front panel thus equipped with its equipment, is a unitary component, also called front panel module, prepared and delivered by the equipment manufacturer, ready to be mounted on the vehicle by the manufacturer.
- the assembly of this unitary module is made by connection to the frame of the lateral structural elements of the vehicle, such as, for example, longitudinal members, wings or hull, then installation of a bumper or frontal buckle reported on the module.
- Figure 1 shows an exploded view of a shock absorbing device according to the present invention.
- FIG. 2 represents an assembled view of the shock absorption device of FIG. 1.
- FIG. 3 shows a detail of the bumper beam fixation zone - a bumper beam mounting plate according to a second embodiment of the present invention.
- FIG. 4 represents a rear view of a shock absorption device comprising the bumper beam according to the embodiment of FIG. 3.
- FIG. 5 is an exploded view of a front face including a shock absorbing device according to the present invention.
- the invention relates to a shock absorbing device 10 comprising at least one so-called bumper beam 12 and fastening plates 14-1 and 14-2 of the bumper beam 12 at the bumper beam 12. chassis of a motor vehicle.
- the bumper beam 12 comprises a central portion 16 and so-called connecting ends 18-1 and 18-2 and has, for example, a U-shaped general section.
- the U of the profile of the beam bends. -bags is oriented towards the mounting plates.
- the U of the beam opens towards the rear of the vehicle, once the shock absorbing device mounted on the motor vehicle,
- the bumper beam 12 may be, for example, made by stamping or hydroforming a hollow aluminum profile or steel.
- the central portion 16 is offset relative to the connecting ends 18-1 and 18-2.
- the offset of the central portion 16 allows the latter to form a central portion of energy absorption.
- the connecting ends 18-1 and 18-2 are connected to the fixing plates 14-1 and 14-2 in a direction substantially tangent to the direction orthogonal to the plates 14-1 and 14-2. In other words, in such a case, the connecting ends 18-1 and 18-2 extend behind the central portion 16, once the shock absorbing device mounted on the motor vehicle.
- the connecting ends 18-1 and 18-2 are substantially at right angles to the general axis of extension of the central portion 16 of the beam 12 and the connecting ends 18-1 and 18-2. are connected to the central portion 16 by a curved connection portion 20 having a point of inflection.
- the connecting ends 18-1 and 18-2 of the bumper beam 12 are secured to the fixing plates 14-1 and 14-2 by means of reported links.
- the bumper beam 12 and the fixing plates 14-1 and 14-2 are two distinct elements attached to one another by fastening means.
- These reported connection means may be for example screws, weld points and / or a weld bead.
- the central portion 16 and the fixing plates 14-1 and 14-2 are expressed substantially parallel, so that the central portion 16 is also offset relative to the fixing plates 14. 1 and 14-2.
- the connecting ends 18-1 and 18-2 of the bumper beam 12 comprise a collar 66 extending over the entire perimeter of said connecting ends 18-1 and 18-2 and according to a plane substantially perpendicular to the latter.
- the flange 66 extends in a plane parallel to the general extension axes of the central portion 16 and the fixing plates 14-1 and 14-2,
- the mounting of the shock absorbing device 10 according to the invention on a motor vehicle chassis is carried out so that the offset direction of the central portion 16 is substantially coincidental with the X axis of the vehicle, that is to say say towards the front of it. This allows the central portion 16 to form a central absorbing portion offset towards the front of the motor vehicle.
- the fixing plates 14-1 and 14-2 comprise a first zone 26-1 and a second zone 26-2. Zones 26-1 and 26-2 are separate areas.
- the fixing plates 14-1 and 14-2 each comprise holes, here four in number, for fixing the bumper beam 12 to a structural element of the motor vehicle.
- the structural element is a front face armature 50.
- the device also comprises a so-called central shock absorber 22 and so-called shock-absorbing absorbers 24-1 and 24-2.
- the central shock absorber 22 is also called “pedestrian” absorber. As represented in FIG. 2, the latter is able to position itself in front of the central portion 16 of the bumper beam 12 and so as to contribute in association with the latter, in particular, to the absorption of the so-called pedestrian impacts and car park.
- the central shock absorber 22 adds energy absorbing material to the front of the bumper beam 12. It is thus possible to exactly size the central absorber so as to fulfill the conditions of the different regulations and / or specifications of manufacturers while keeping a single reference of bumper beam.
- the central absorber 22 comprises, here, a cellular portion.
- the cell portion is in the form of repeating patterns along the entire length of the absorber.
- the pattern has the form of a housing or box having an open face.
- the walls of the housing are here made by reinforcement ribs A 1 B, C and D.
- the cell portion is defined at least in part by reinforcing ribs.
- the repairable shock absorbers 24-1 and 24-2 each comprise a so-called contact surface coming opposite the first zone 26-1 of the fixing plates 14-1 and 14-2, once the shock absorbing device assembled.
- the term "contact surface” here refers to the face of the 24-1 and 24-2 reparability impact absorbers oriented towards the fixing plates 14-1 and 14-2.
- repairability shock absorbers 24-1 and 24-2 are fixed on the fixing plates 14-1 and 14-2 and not on the bumper beam 12.
- the replaceable shock absorbers 24-1 and 24-2 are attached to the first zone 26-1 of the fixing plates 14-1 and 14-2 and extend in the same direction as the offset the central portion 16 of the bumper beam 12, occupying at least the space defined between the connecting ends of the bumper beam and the distal zone of the bumper beam of the plates fixing (otherwise the first zone of the fixing plates).
- the repairable shock absorbers are not located in the bumper beam but close to the latter and their volume is distinct from that of the bumper beam
- the repairable shock absorbers 24-1 and 24-2 are placed "in front" of the brackets 14-1 and 14-2, which makes them more accessible and they extend backwards once the device according to the invention mounted on the motor vehicle.
- the repairability shock absorbers 24-1 and 24-2 comprise at least one housing adapted to contain a shock absorbing material.
- the reachable shock absorbers also comprise a cellular structure and this cellular structure makes it possible to define a plurality of housing, at least one of which can accommodate said shock absorbing material, for example aluminum foam.
- the central shock absorber 22 and the repair shock absorbers 24-1 and 24-2 are made in one piece.
- the front face 50 is a frame adapted to receive equipment of the motor vehicle such as projectors or heat exchangers (not shown).
- FIG. 3 represents a detail of the bumper beam attachment zone 12 '- fixing plate 18'-1 of a device according to a second embodiment.
- the bumper beam 12 ' is made in two parts, namely a first portion 12'-A having a U-shaped general profile and a second portion 12'-B having the function of reinforcing the profile of the first part 12'-A.
- a first portion 12'-A having a U-shaped general profile
- a second portion 12'-B having the function of reinforcing the profile of the first part 12'-A.
- the second part 12'-B reinforcing plate 12-B we will call, later, the second part 12'-B reinforcing plate 12-B.
- the reinforcing plate 12'-B closes the U-shaped profile of the first part 12'-A.
- the reinforcing plate forms a cover for the first portion 12'-A.
- the first portion 12'-A and the reinforcing plate 12'-B are connected by fastening means such as, for example, rivets.
- the first portion 12'-A and the reinforcing plate 12'-B both comprise a central portion (not shown) and connecting ends of which only one (18'-1) is shown in FIG. the central portions of the first portion 12-A and the reinforcing plate 12'-B are offset relative to their respective connecting ends.
- first portion 12'-A and the reinforcing plate 12'-B are each bound to the levels of their respective connecting ends to a mounting plate. This connection is effected here by means of tabs.
- first portion 12'-A has three tabs of which only two (68-A and 68-B) are visible.
- the reinforcing plate 12'-B comprises, for its part, a tongue 68-C.
- Each of the tongues extends in a plane parallel to the general extension axes of the central part and the first part of the reinforcing plate and fixing plates.
- connection ends are connected to the fixing plate in the second zone of the latter.
- Figure 4 shows a rear view of an absorption device having a bumper beam 12 '.
- the reinforcing plate 12'-B comprises a rib present at the curved connection portion 20 and the connecting end to the mounting plate, This recess has the function of locally stiffening the beam.
- the armature of the front face 50 is here made entirely of steel.
- the front face 50 has a cross member 52 said upper and is substantially horizontal.
- the upper cross member 52 has two so-called lateral ends 54-1 and 54-2 adapted to support at least part of the projectors and a central portion 56 adapted to receive a lock support.
- the front face 50 further comprises two legs 58-1 and 58-2.
- the two legs 58-1 and 58-2 are substantially vertical and arranged respectively on the right side and the left side of the vehicle. These two jambs are still called “amounts” or "quarters”.
- the legs 58-1 and 58-2 are connected by their ends said upper to the upper cross member 52. In other words, the legs 58-1 and 58-2 are joined together by the upper cross member 52 disposed between their upper ends.
- the front face comprises, here, a lower cross member 60.
- the lower cross member 32 is fixed to the legs 58-1 and 58-2 by their so-called lower ends.
- the bottom rail 60 extends substantially horizontally and is parallel to the upper cross member 52.
- the bumper beam 12 and thus the shock absorbing device according to the invention is fixed at the jambs 58-1 and 58-2 by means of the fixing plates 14-1 and 14-2.
- the bumper beam 12 extending substantially horizontally and parallel to the upper cross member 52 and the lower cross member 60
- a pedestrian beam 62 is fixed on the front face 50 at the level of the lower rail 60.
- the pedestrian beam 62 is made in the form of a structure, for example plastic, at least partly aveolar absorbing shock.
- the pedestrian beam 62 comprises reinforcing ribs 64 defining the structure of the pedestrian beam 62. It is possible to provide a metal reinforcement overmoulded with the shock absorbing plastic structure or subject to the latter.
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 |
---|---|---|---|
FR0802776A FR2931417B1 (fr) | 2008-05-22 | 2008-05-22 | Dispositif d'absorption de choc et face avant comportant un tel dispositif |
PCT/EP2009/056047 WO2009141331A1 (fr) | 2008-05-22 | 2009-05-19 | Dispositif d'absorption de choc et face avant comportant un tel dispositif |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2282915A1 true EP2282915A1 (fr) | 2011-02-16 |
Family
ID=40139899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09749821A Ceased EP2282915A1 (fr) | 2008-05-22 | 2009-05-19 | Dispositif d'absorption de choc et face avant comportant un tel dispositif |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110169283A1 (fr) |
EP (1) | EP2282915A1 (fr) |
JP (1) | JP2011520697A (fr) |
FR (1) | FR2931417B1 (fr) |
WO (1) | WO2009141331A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5801122B2 (ja) * | 2011-07-11 | 2015-10-28 | 小島プレス工業株式会社 | 車両用歩行者保護装置 |
US9731669B2 (en) * | 2012-02-28 | 2017-08-15 | Sabic Global Technologies B.V. | Energy absorbing system |
US9108580B2 (en) * | 2013-04-11 | 2015-08-18 | Shape Corp. | Bumper system with pedestrian-friendly lower apron |
JP2015168364A (ja) * | 2014-03-07 | 2015-09-28 | トヨタ自動車株式会社 | 車体の前部構造体 |
DE102015200199A1 (de) * | 2015-01-09 | 2016-07-14 | Bayerische Motoren Werke Aktiengesellschaft | Stoßfängereinrichtung für ein Fahrzeug |
FR3038680B1 (fr) * | 2015-07-10 | 2018-10-19 | Plastic Omnium Cie | Module d'absorption de chocs pour vehicule automobile |
JP6030198B2 (ja) * | 2015-08-26 | 2016-11-24 | 小島プレス工業株式会社 | 車両用歩行者保護装置 |
US10507776B2 (en) * | 2017-10-12 | 2019-12-17 | GM Global Technology Operations LLC | Fiber-reinforced composite bumper beam and crush members |
CN110116693A (zh) * | 2019-06-17 | 2019-08-13 | 盐城宝风机械科技有限公司 | 一种汽车缓冲保险杠 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6609740B2 (en) * | 2001-04-16 | 2003-08-26 | Shape Corporation | Bumper system with face-mounted energy absorber |
JP4762444B2 (ja) * | 2001-06-15 | 2011-08-31 | 富士重工業株式会社 | 車両のフロントエンド構造 |
DE102005017956B4 (de) * | 2005-04-18 | 2013-04-04 | Ise Automotive Gmbh | Stoßenergieaufnahmevorrichtung |
JP4853151B2 (ja) * | 2006-07-14 | 2012-01-11 | マツダ株式会社 | 自動車の前部構造 |
-
2008
- 2008-05-22 FR FR0802776A patent/FR2931417B1/fr not_active Expired - Fee Related
-
2009
- 2009-05-19 JP JP2011509954A patent/JP2011520697A/ja active Pending
- 2009-05-19 US US12/993,439 patent/US20110169283A1/en not_active Abandoned
- 2009-05-19 WO PCT/EP2009/056047 patent/WO2009141331A1/fr active Application Filing
- 2009-05-19 EP EP09749821A patent/EP2282915A1/fr not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO2009141331A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20110169283A1 (en) | 2011-07-14 |
FR2931417B1 (fr) | 2011-02-25 |
FR2931417A1 (fr) | 2009-11-27 |
WO2009141331A1 (fr) | 2009-11-26 |
JP2011520697A (ja) | 2011-07-21 |
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