WO2014001688A1 - Capot avant de véhicule automobile adapté pour le choc hanche et véhicule automobile comportant un tel capot avant - Google Patents
Capot avant de véhicule automobile adapté pour le choc hanche et véhicule automobile comportant un tel capot avant Download PDFInfo
- Publication number
- WO2014001688A1 WO2014001688A1 PCT/FR2013/051403 FR2013051403W WO2014001688A1 WO 2014001688 A1 WO2014001688 A1 WO 2014001688A1 FR 2013051403 W FR2013051403 W FR 2013051403W WO 2014001688 A1 WO2014001688 A1 WO 2014001688A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wall
- hood
- vehicle
- orifice
- order
- Prior art date
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
- B62D25/08—Front or rear portions
- B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
- B62D25/105—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles for motor cars
-
- 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
- B60R2021/0002—Type of accident
-
- 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
- B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
- B60R2021/0039—Body parts of the occupant or pedestrian affected by the accident
- B60R2021/0055—Pelvis
-
- 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
-
- 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
Definitions
- Front hood of a motor vehicle adapted for hip shock and a motor vehicle comprising such a front hood
- the invention relates to motor vehicles, and in particular the front hood structures of a motor vehicle, intended to withstand the different types of shock, in particular of the "hip shock” type.
- the invention more particularly relates to a front hood of a motor vehicle having a first inner wall and a second outer wall interconnected and means for connection to the body of the vehicle, said inner wall having at least a first orifice of substantially rectangular shape, which first orifice:
- the hoods of a motor vehicle are generally formed of a skin forming the visible side of the hood, or outer wall, and a reinforcement, called lining, placed on the invisible side of the hood, or inner wall.
- a reinforcement called lining
- the lining and the skin are glued and / or crimped on the periphery of the hood, and studs wedging, usually low resistance putty, provide a bond between the skin and the liner over the rest of the hood surface.
- a front hood of a motor vehicle is a movable body body which, closed, protects a motor compartment and, open, allows access to mechanical devices for maintenance and repair including.
- the safety standards for motor vehicles have become increasingly severe, so it is necessary to provide a shock energy damping, including, on the front cover, in order to to minimize the injuries caused by such a shock.
- hood damping systems have already been proposed to meet the various criteria for characterizing the safety of a vehicle.
- the invention relates to the production of a front hood of a motor vehicle that meets the various safety standards in case of collision with an external element, in particular the hip of a pedestrian, whatever the dimensional constraints imposed by the design of the front face of the vehicle.
- the object of the invention is characterized, more particularly, by the fact that said inner wall comprises a central boss at said front edge, shaped to adapt to the constraints of the front face of the vehicle imposed by the presence of a imprint for the logo of the mark of the vehicle, and in that said first hole is formed in said boss and has predetermined dimensions, so as to control the deformation force of the cover in case of impact at said front edge.
- Such an orifice arranged at this precise location of the cover thus makes it possible to promote shearing of the orifice during the deformation of the cover following an impact, which makes it possible to optimize the deformation of the cover.
- Said first orifice may have a length of between 60 mm and 80 mm, preferably of the order of 70 mm, and a width of between 5 mm and 30 mm, preferably of the order of 20 mm, for a length of the hood of the order. 750mm and a hood width of about 1440mm.
- the cover may comprise additional orifices of substantially rectangular shape, formed in said inner wall.
- Said additional orifices may be oriented transversely to said longitudinal axis of the vehicle, substantially parallel to said first orifice.
- Said inner wall may comprise two additional orifices arranged at said front edge of the hood and on either side of said first orifice along the longitudinal axis of the vehicle.
- Said first orifice may have a length of between 80 mm and 150 mm, preferably of the order of 90 mm, and a width of between 5 mm. and 30mm, preferably of the order of 10mm, and said additional orifices may each have a length of between 80mm and 150mm, preferably of the order of 90mm, and a width of between 5mm and 25mm, preferably of order of 10mm.
- the invention also relates to a motor vehicle that meets all the safety criteria, particularly in the event of a shock of the "hip shock" type.
- This object of the invention is characterized in that the motor vehicle comprises such a front cover.
- FIG. 1 represents a perspective and sectional view of a first embodiment of a motor vehicle front cover according to the invention, just before deformation by an external element coming substantially against the front face of the vehicle.
- Figure 2 is a partial perspective view of the front cover according to Figure 1, shown without the upper wall.
- Figures 3 to 6 show very schematically different successive stages of deformation of the front cover according to Figures 1 and 2, during an impact with an external element.
- Figure 7 schematically shows a top view of an inner wall of an alternative embodiment of a front cover according to the invention.
- the cover 10 comprises a first inner wall 1 1, or hood lining, and a second outer wall 12, or skin hood.
- the two walls 1 1 and 12 are interconnected, in particular at their periphery, so as to form a substantially hollow cover 10 (FIG. 1).
- the front cover 10 also comprises means of connection to the bodywork 13 of the vehicle.
- an outer member 14 of the impactor type for "hip shock” comes into contact with the cover 10 at a front edge 15 during specific tests.
- the front edge 15 has dimensional constraints and important design, including the presence of a footprint 16 for the logo of the brand, drawn on the front of the vehicle.
- the inner wall 1 1 thus comprises a conformation or boss 17, arranged in the center and at the front of the inner wall January 1, to adapt the shape of the front cover 10, plus particularly the front edge 15 of the front cover 10, to the constraints of the front of the vehicle.
- the concept of the front cover 10 according to the invention therefore consists in providing an orifice 18 at the front edge 15 of the cover 10, more particularly in the boss 17 of the inner wall 1 1 of the front cover, in order to create weaknesses in this hood lining area and can control the deformation of the hood 10 in case of shock.
- the orifice 18 is substantially rectangular in shape and oriented transversely in the inner wall 1 1 of the cover 10 along the transverse axis Y, ie perpendicular to the longitudinal axis X of the vehicle.
- the orifice 18 is formed in the boss 17 of the inner wall January 1 of the front cover 10 and its dimensions are such that they allow deformation and shear work of the front cover 10, as explained in more detail below in FIG. look at Figures 3 to 6.
- the length L 3 of the orifice 18 is between 60 mm and 80 mm. , preferably of the order of 70mm, and the width L4 of the orifice 18 is between 5mm and 30mm, preferably of the order of 20mm.
- FIGS. 3 to 6 illustrating in particular the deformation of the orifice 18 formed in the inner wall 11.
- the cover 10 is in a non-deformed rest position and is ready to receive the impactor 14.
- FIG. 4 when the impactor 14, of the "hip shock” type, comes into substantially contact with each other. the front edge 15 of the cover 10, this one folds first under an F1 effort ( Figure 4).
- the reaction force generated by the cover 10 must then remain under control, that is to say without deformation of the orifice 18 and without exceeding a critical value of effort, namely by substantially maintaining a spacing e1 between the two longitudinal edges of the orifice 18, namely those of greater length.
- the front edge 15 of the inner wall 1 1 of the front cover 10 begins to deform around the orifice 18, according to the arrow F2 in FIG. 5, so that a spacing e2 between the longitudinal edges of the orifice 18 is different from the gap e1 at rest ( Figure 3).
- This rotation of the walls of the hood 10 is in particular due to the degrees of freedom of the impactor.
- the deformation continues substantially with a force along the arrow F3 in FIG. 6, so that the orifice 18 is completely deformed with its longitudinal edges being substantially one above the other. the other along the vertical axis Z, so as to have a spacing e3 different from the spacings e1 and e2.
- the front cover 10 has arrived at the end of shock, where the deformation is no longer possible.
- the orifice 18 allows the front cover 10 to deform in shear and not in compression, in the case where the orifice would have been circular in shape, which makes it possible to optimize and precisely control the deformation. Indeed, it is thus possible, depending on the chosen dimensions of the orifice 18 (length and width), to determine as much as necessary the size of the orifice 18, in order to respond perfectly to the levels of efforts sought to guarantee the integrity of a pedestrian. In particular, the greater the length L3 of the orifice 18, the more the shear is optimized during the deformation of the front cover 10. This solution also has the advantage of keeping stiffness over the entire front area of the hood 10, so as not to degrade the over-strokes of the hood 10 when it is closed. In the variant embodiment shown in FIG.
- the inner wall 19 has a first orifice 20 formed in a central boss 21 of the inner wall 19, arranged substantially in the center and on the front edge 22 of the inner wall 19.
- the first hole 20 is of substantially rectangular shape, transversely oriented relative to the longitudinal axis X of the vehicle and with predetermined dimensions, so as to drive in shear the deformation force of the cover 10 in case of impact at the front edge 22.
- the inner wall 19 advantageously comprises additional orifices 23, 24 of substantially rectangular shape and oriented transversely with respect to the longitudinal axis X of the vehicle, namely substantially parallel to the first orifice 20. central. More particularly, the two additional orifices 23, 24 are arranged at the front edge 22 and on either side of the central orifice 20 with respect to the longitudinal axis X.
- the orifices 20, 23, 24 have predetermined dimensions and are arranged so that the inner wall 19 of the front cover 10 is stressed in shear, when its deformation following a shock, especially of the "hip shock” type.
- the force can thus be controlled over a wide range of the front cover 10, thanks in particular to the three orifices 20, 23, 24 distributed substantially along the front edge 22, which makes it possible to meet the safety requirements over the entire area. front of the hood.
- the length L5 of the central orifice 20 is between 80 mm and 150 mm, preferably of the order of 90 mm, and the width L 6 of the central orifice is between 5 mm and 30 mm, preferably of the order of 10mm.
- the additional orifices 23, 24 each have a length L7 between 80mm and 150mm, preferably of the order of 90mm, and a width L8 of between 5mm and 25mm, preferably of the order of 10mm, for a length of the cap 10 of the order of 750mm and a width of hood 10 of the order of 1440mm.
- the position, the number and the size of the orifices are determined according to the stiffness requirements of the front hood 10 to be reached.
- the advantage is therefore to be able to position these orifices as needed over the entire length of the hood (FIG. 7) or on a very specific part (FIGS. 1 and 2), while allowing this characteristic shearing stress which makes it possible to fly as well as possible the force of the deformation of the front cover 10 in case of shock.
- the invention is not limited to the various embodiments described above.
- the shape and dimensions of the orifices 18, 20, 23, 24 transverse formed in the inner wall January 1, 19 at the front edge 15, 22 of the front cover 10 according to the invention are non-limiting and depend on the stiffness desired hood in case of deformation following a shock, including type "hip shock”.
- the shape of the orifices 18, 20, 23, 24 may be different, as long as it remains substantially rectangular or equivalent, to allow this specific shear deformation of the front edge of the inner wall of the front cover in case of impact.
- the invention applies to any type of motor vehicle that must comply with the safety standards in force.
- a front cover according to the invention is particularly installed on any type of motor vehicle whose front face is strongly constrained, in terms of dimensions and / or design.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Superstructure Of Vehicle (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112014032650A BR112014032650A2 (pt) | 2012-06-29 | 2013-06-14 | capô dianteiro de veículo automotivo, e, veículo automotivo. |
ES13737323.9T ES2584705T3 (es) | 2012-06-29 | 2013-06-14 | Capó delantero de vehículo automóvil adaptado para el choque de cadera y vehículo automóvil que tiene tal capó delantero |
EP13737323.9A EP2867071B1 (fr) | 2012-06-29 | 2013-06-14 | Capot avant de véhicule automobile adapté pour le choc hanche et véhicule automobile comportant un tel capot avant |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1256267A FR2992622B1 (fr) | 2012-06-29 | 2012-06-29 | Capot avant de vehicule automobile adapte pour le choc hanche et vehicule automobile comportant un tel capot avant |
FR1256267 | 2012-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014001688A1 true WO2014001688A1 (fr) | 2014-01-03 |
Family
ID=47080657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2013/051403 WO2014001688A1 (fr) | 2012-06-29 | 2013-06-14 | Capot avant de véhicule automobile adapté pour le choc hanche et véhicule automobile comportant un tel capot avant |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2867071B1 (fr) |
BR (1) | BR112014032650A2 (fr) |
ES (1) | ES2584705T3 (fr) |
FR (1) | FR2992622B1 (fr) |
WO (1) | WO2014001688A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005036171A1 (de) * | 2005-08-02 | 2007-02-08 | Daimlerchrysler Ag | Fronthaube für Kraftfahrzeuge |
US20090121519A1 (en) | 2007-11-09 | 2009-05-14 | Toyota Motor Engineering & Manufacturing North America, Inc. | Vehicle Hood Reinforcement Structures |
WO2012146851A1 (fr) * | 2011-04-29 | 2012-11-01 | Peugeot Citroen Automobiles Sa | Capot de vehicule avec doublure amortissante pour choc pieton |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005145224A (ja) * | 2003-11-14 | 2005-06-09 | Toyota Motor Corp | 車両用フード構造 |
FR2917053B1 (fr) * | 2007-06-07 | 2009-11-27 | Peugeot Citroen Automobiles Sa | Capot avant pour vehicule automobile et vehicule automobile comportant un tel capot. |
EP2008884A1 (fr) * | 2007-06-28 | 2008-12-31 | Ford Global Technologies, LLC | Capot pour véhicules à moteur |
KR100848735B1 (ko) * | 2007-07-19 | 2008-07-25 | 지엠대우오토앤테크놀로지주식회사 | 자동차의 엔진 후드패널 |
-
2012
- 2012-06-29 FR FR1256267A patent/FR2992622B1/fr not_active Expired - Fee Related
-
2013
- 2013-06-14 WO PCT/FR2013/051403 patent/WO2014001688A1/fr active Application Filing
- 2013-06-14 ES ES13737323.9T patent/ES2584705T3/es active Active
- 2013-06-14 BR BR112014032650A patent/BR112014032650A2/pt active Search and Examination
- 2013-06-14 EP EP13737323.9A patent/EP2867071B1/fr active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005036171A1 (de) * | 2005-08-02 | 2007-02-08 | Daimlerchrysler Ag | Fronthaube für Kraftfahrzeuge |
US20090121519A1 (en) | 2007-11-09 | 2009-05-14 | Toyota Motor Engineering & Manufacturing North America, Inc. | Vehicle Hood Reinforcement Structures |
WO2012146851A1 (fr) * | 2011-04-29 | 2012-11-01 | Peugeot Citroen Automobiles Sa | Capot de vehicule avec doublure amortissante pour choc pieton |
Also Published As
Publication number | Publication date |
---|---|
ES2584705T3 (es) | 2016-09-28 |
FR2992622A1 (fr) | 2014-01-03 |
FR2992622B1 (fr) | 2015-04-17 |
BR112014032650A2 (pt) | 2017-06-27 |
EP2867071A1 (fr) | 2015-05-06 |
EP2867071B1 (fr) | 2016-05-18 |
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