Structure with front support for motor vehicle

Abstract

The invention relates to a motor vehicle structure (12). The structure (12) comprises: at least one front side member (18) with a front end (32); a front pillar (20) fixed to the front end (32), the front pillar (20) comprising a lower portion (34) and an upper portion (36). The front pillar (20) includes a pivot joint (38) connecting the lower portion (34) to the upper portion (36), the pivot joint (38) being configured to allow displacement of the upper portion (36) relative to the lower portion (34) in the event of a frontal collision. The motor vehicle has a lighting device (28) connected to the upper portion (36) via a reinforcing frame (42). Figure to be published with the abbreviation: Figure 2

Description

Title of the invention: Structure with front support for a motor vehicle

[0001] The invention deals with a front-end collision of a motor vehicle. More specifically, the invention relates to a front structure of a motor vehicle. The invention also relates to a motor vehicle.

[0002] A motor vehicle structure forms a load-bearing framework connecting the various components of the vehicle. It provides primary support. It comprises a plurality of stamped and welded sheet metal parts. The structure notably forms a front section defining a front compartment, such as an engine compartment.

[0003] At the front, the structure features front side members, also called front frame members. These extend over the entire engine compartment. The front axle is connected to the front side members via the powertrain. At the front end, the front side members are fitted with front pillars. The front pillars form mounting columns that receive the reinforcing frame. The structure extends further with shock-absorbing boxes. These shock-absorbing boxes are finally connected by a front crossmember, forming the front end of the structure.

[0004] A structure, and more generally the vehicle as a whole, is designed to withstand the possibility of various impacts. It is optimized to absorb the energy of a frontal impact and to concentrate deformations in certain parts. The possibility of pedestrian impacts is also taken into account through the use of foam absorbers.

[0005] Document EP3318450B1 describes a method for installing elements on a motor vehicle to reduce damage to vehicle parts in the event of a frontal impact. The method includes installing a transverse frontal impact protection beam at the front of the vehicle, and installing an impactor to protect the front face of a motor-fan assembly. The impactor is configured so that, in the event of a frontal impact, it will move the motor-fan assembly, the face of which is then kept away from the beam. The vehicle is further equipped with a controlled air intake module attached to the motor-fan assembly on its front face to modulate the airflow supplied to the motor-fan assembly.The method also includes the installation of an impactor extension which is adapted to the controlled air intake module, so that, in the event of a front impact, it receives the support of the beam from the first phase of the stroke, and under the effect of this support, moves back towards the rear of the vehicle and drives the intake module. Air is controlled via the motor-fan unit. The controlled air intake module then remains away from the beam.

[0006] Document FR3001696A1 describes a front structure of a motor vehicle. The front structure comprises a frame with two generally parallel side members, a crossbeam fixed to the front of the side members, and a front fascia extending generally parallel to, and behind, the crossbeam. The front fascia is fixed to the side members by means of fasteners adapted to slide along said side members in the event of an impact on said fascia.

[0007] Document FR3016576B1 describes a front structure of a motor vehicle. The structure comprises a front end supported by lateral front end supports, these being carried by the frame members via mounting plates. The front end comprises a forward-curved portion, generally extending vertically; and a rear portion extending essentially horizontally above the vertical portion and provided at its lateral ends with means for attachment to front end supports on the front frame members. The front end further comprises partitions and several box sections on the rear portion, stiffening said portion and making it capable of transmitting lateral forces to the front end supports in the event of a frontal impact on the vehicle.

[0008] The side supports form front pillars. In the event of a low-speed frontal collision, for example at a maximum speed of 16 km / h, these front pillars are likely to deform. It then becomes necessary to replace them, even in the case of a repairable collision. This risk is even more pronounced for an electric vehicle whose mass exceeds two tonnes due to the electric battery. The extent of the repairs increases repair costs and alters the insurance class. Therefore, there is a need to reduce the damage caused in a repairable collision.

[0009] The invention aims to address at least one of the problems or drawbacks encountered in the prior art. In particular, the invention aims to reduce damage during a frontal collision of a motor vehicle, specifically improving repairability. The invention also aims to optimize the safety, repairability, and structural integrity of a motor vehicle.

[0010] According to a first aspect, the invention proposes a motor vehicle structure, the structure comprising: at least one front longitudinal member with a front end; a front pillar fixed to the front end, the front pillar comprising a lower portion, an upper portion; notable in that the front pillar comprises a pivot joint connecting the lower portion to the upper portion, the pivot joint being configured to allow movement of the upper portion relative to the lower portion in the event of a collision.

[0011] Preferably, the pivot joint comprises a hook and a pin.

[0012] Preferably, the pivot joint has a transverse axis of rotation.

[0013] Preferably, the hook includes a longitudinal opening; the pivot joint being configured so that the pin exits the hook through the longitudinal opening when a force greater than or equal to a threshold force is applied to the pivot joint.

[0014] Preferably, the hook is formed by the lower portion, and the pin is formed by the upper portion.

[0015] Preferably, the longitudinal opening is formed by the lower portion.

[0016] Preferably, the longitudinal opening is open towards the front.

[0017] Preferably, the upper portion comprises an angled section with a lower segment; the pivot joint being fixed to said lower segment.

[0018] Preferably, the lower portion comprises a first width; the pivot joint comprises a second width that is smaller than the first width.

[0019] Preferably, the upper portion and / or the pivot joint extends transversely into the interior of the lower portion.

[0020] Preferably, the pivot joint extends transversely towards the inside of at least one front longitudinal member.

[0021] Preferably, the structure comprises a shock-absorbing box capable of absorbing energy during a frontal impact, the absorption box being fixed to the front of the lower portion, the pivot joint being above the absorption box.

[0022] Preferably, the absorption box is longitudinally in line with the front spar.

[0023] Preferably, the at least one front spar comprises an upper front spar and a lower front spar which are fixed to the lower portion; the pivot joint being above the upper front spar and the lower front spar.

[0024] Preferably, the structure comprises a passenger compartment, two central longitudinal members extending along the passenger compartment; at least one front longitudinal member being in front of the central longitudinal members.

[0025] Preferably, the pivot joint is vertically above the central stringers.

[0026] Preferably, the pivot joint is vertically at the level of the passenger compartment.

[0027] Preferably, the pivot joint includes a pin in the hook or in a tube.

[0028] Preferably, the hook comprises a pin and a longitudinal opening.

[0029] Preferably, the pivot joint is configured so that the pin exits the hook through the longitudinal opening during a head-on collision at a speed greater than or equal to a threshold speed.

[0030] According to another aspect, the invention proposes a motor vehicle structure, the structure comprising: at least one front side member with a front end; a front pillar fixed to the front end, the front pillar comprising a lower portion and an upper portion; notable in that the front pillar includes a hook connecting the lower portion to the upper portion, the hook being configured to allow movement of the upper portion relative to the lower portion in the event of a collision. The hook allows for the retention and release of the portions during an impact. This fulfills the requirement for retention and the requirement for damage limitation in the event of a collision.

[0031] According to another aspect, the invention proposes a motor vehicle comprising a structure, remarkable in that the structure conforms to the invention.

[0032] Preferably, the motor vehicle includes a reinforcing frame fixed to the upper part of the front pillar, the pivot joint being under the reinforcing frame.

[0033] Preferably, the front pillar is a first front pillar, the structure includes a second front pillar transversely opposed to the first front pillar, the motor vehicle including a lighting device extending transversely from the first front pillar to the second front pillar; the lighting device extending at the level of the upper portion.

[0034] Preferably, the pivot joint is vertically below the light device, and the light device includes a light grid.

[0035] Preferably, the motor vehicle includes a vertically lit grille at the top.

[0036] Preferably, the pivot joint is vertically below the light grid.

[0037] Preferably, the light grid is a central light grid.

[0038] Each feature introduced by the expression "preferably" given in relation to one of the aspects of the invention applies to all other aspects of the invention.

[0039] The invention will be well understood and other aspects and advantages will become clear upon reading the following description, given with reference to the attached figures listed below.

[0040] Fig. 1 is a side view of a motor vehicle according to the invention.

[0041] Figure 2 shows a portion of the front structure of a motor vehicle according to the invention.

[0042] Figure 3 is a front view of a vertical pillar of a motor vehicle structure according to the invention.

[0043] Figure 4 is a detailed side view of a pivot joint of a vertical pillar of motor vehicle structure according to the invention.

[0044] In the following description, the term "include" is synonymous with "include" and is not limiting in that it permits the presence of other elements in the motor vehicle or in the structure to which it relates. It is understood that the term "include" includes the terms "consist of". The terms "external" and "internal" shall respectively designate what is oriented towards the outside of the vehicle and towards the inside of the vehicle.

[0045] In this description, the terms "longitudinal," "longitudinally," "transverse," and "transversely" are used with respect to the vehicle's frame of reference in the mounting configuration. The term "longitudinal" refers to the principal direction of travel of the vehicle. The term "transverse" refers to a direction perpendicular to the principal direction of travel of the vehicle. The term "front" refers to the principal direction of travel of the vehicle. The term "rear" refers to the opposite of the front of the vehicle.

[0046] The X-axis represents the longitudinal direction, the Y-axis represents the transverse direction, and the Z-axis represents the vertical direction of the motor vehicle. These three axes define a right-handed trihedron whose orientation is preserved throughout the figures.

[0047] In this description, the ranges of values ​​include the bounds that delimit them.

[0048] In the present description, equality between values ​​is not to be understood in the strict sense insofar as each equality allows a variation of at most 10%, preferably at most 5%, more preferably at most 2%, between these values.

[0049] In this description, the terms "vertical" and "horizontal" are not to be understood in their strict sense. Indeed, they allow an inclination of at most 20°, preferably at most 10°, more preferably at most 5°, and even more preferably at most 2°; with respect to the strict meaning of these terms.

[0050] In this description, the technical characteristics are defined in the mounting configuration of the structure, unless otherwise explicitly stated.

[0051] Throughout the description, the different figures use the same reference signs to designate identical or similar entities.

[0052] Figure 1 represents a motor vehicle 10, according to an embodiment of the invention. The motor vehicle 10 comprises energy storage means and at least one motor (not shown) adapted to drive said motor vehicle 10.

[0053] The motor vehicle 10 comprises a structure 12. The structure 12 forms an outer body, or the main frame of the motor vehicle. The structure 12 delimits different compartments of the motor vehicle 10, including the passenger compartment, the cargo area, and the engine compartment (not shown). Structure 12 can be formed from an assembly of stamped and welded sheet metal parts.

[0054] The structure 12 connects various parts of the motor vehicle 10, including the openings. The structure 12 forms a mounting support for the powertrain, suspension systems, steering system, and braking systems.

[0055] The structure 12 includes central longitudinal members 14. The central longitudinal members 14 are main longitudinal members, or lower longitudinal members. They extend along the passenger compartment. They connect the front and rear wheel arches. At the front, the central longitudinal members 14 are extended by front supports 16, forming columns that define the openings for the front doors.

[0056] The structure 12 further includes front side members 18. The front side members 18 are forward of the central side members 14. They are positioned above them. The front side members 18 extend from the front legs 16. They extend along the front axle and the optional powertrain. The front side members 18 may generally be curved. The front side members may include overlapping front side members, which form at least two paths for transmitting force in the event of a frontal collision.

[0057] The structure 12 also includes front pillars 20. The front pillars 20 are located at the ends of the front side members 18. The front pillars 20 are also referred to as front supports. They receive the cooling front, or more generally, heat exchangers. In their lower portion, the front pillars 20 receive energy-absorbing devices, such as absorption boxes 22. The absorption boxes 22 are generally referred to by the Anglo-Saxon term "crashbox." In the event of a frontal collision at a speed exceeding a threshold speed, the absorption boxes 22 deform like an accordion and dissipate the impact energy. They improve passenger safety.

[0058] The front side members 18 comprise two upper front side members 24 and two lower front side members 26. The lower front side members 26 form the subframe. The upper front side members 24 and the lower front side members 26 each connect the front legs 16 to the front pillars 20. They form a frame.

[0059] On the front of the vehicle, the motor vehicle 10 also includes a lighting device 28. The lighting device 28 is capable of providing regulatory lighting. It includes a power supply unit. The lighting device 28 includes, for example, a light grid illuminating the immediate surroundings of the motor vehicle 10.

[0060] The motor vehicle can, for example, be a private motor vehicle or a commercial motor vehicle.

[0061] Figure 2 shows a front section of a motor vehicle structure 12, viewed in profile, according to an embodiment of the invention. The motor vehicle may correspond to the one shown in relation to Figure 1. The bodywork is not shown for clarity.

[0062] Structure 12 is generally symmetrical. In the following description, reference will be made to one side of structure 12; in this case, the left side. However, the description also applies to the right side. Furthermore, the term "front spar" will refer to the upper front spar, unless otherwise specified.

[0063] The structure 12 comprises at least one front longitudinal member 18 with a front end 32. The front end 32 forms a mounting interface. It has a front plane perpendicular to the longitudinal direction. The front end 32 is vertical. The structure 12 has a front pillar 20 fixed to the front end 32. It abuts longitudinally against the front end 32. The front pillar 20 comprises a lower portion 34 and an upper portion 36. The latter extends vertically from the lower portion 34. The lower portion 34 and the upper portion 36 form vertical sections of the front pillar 20.

[0064] The front pillar 20 includes a pivot joint 38. The pivot joint 38 connects the lower portion 34 to the upper portion 36. The pivot joint 38 forms a joint with one degree of freedom, or at least two degrees of freedom. The pivot joint 38 is configured to allow movement of the upper portion 36 relative to the lower portion 34 in the event of a frontal collision against the front of the vehicle. The movement of the upper portion 36 is a movement, such as a rotation and / or a translation.

[0065] Thus, the invention allows movement of a portion of the front pillar 20 without persistent deformation. In the event of a low-speed collision with a fixed obstacle, for example, during a parking maneuver, the front pillar 20 can be repaired by repositioning the upper portion 36. It is not necessary to replace it. This reduces the costs of repairing the motor vehicle.

[0066] The structure 12 includes a shock-absorbing box 22 capable of absorbing energy during a frontal impact. The shock-absorbing box 22 is fixed to the front of the lower portion 34. The pivot joint 38 is above the shock-absorbing box 22; preferably, the shock-absorbing box 22 is longitudinally aligned with the front side member. The pivot joint 38 is vertically above the central side members (not shown). The pivot joint 38 is vertically at the level of the passenger compartment (not shown). This elevation moves the pivot joint 38 away from the load paths.

[0067] The structure 12 includes a front crossmember 40. The front crossmember 40 is connected to the absorption box 22. It is curved forward. It is integrated into a bumper system. In the event of a frontal impact, the front crossmember 40 deforms, absorbing the impact energy.

[0068] The at least one front spar 18 comprises an upper front spar 24 and a lower front spar 26, both of which are fixed to the lower portion 34. The lower portion 34 is forward of the upper front spar 24 and the lower front spar 26. The pivot joint 38 is above the upper front spar 24 and the lower front spar 26.

[0069] The motor vehicle includes a reinforcing frame 42 attached to the upper part 36 of the front pillar 20. The reinforcing frame 42 is configured to hold a front bumper skin of the bumper system. The reinforcing frame 42 caps the front pillar 20. The pivot joint 38 is located below the reinforcing frame 42. The reinforcing frame 42 is attached to the lighting device 28. It forms a link between the two.

[0070] The front pillar 20 is a first front pillar. By symmetry, the structure 12 includes a second front pillar transversely opposite the first front pillar. The first and second front pillars are generally symmetrical. They are longitudinally at the same level. They are connected by the front cross member 40; via the absorption boxes 22.

[0071] The motor vehicle includes a lighting device 28 extending transversely from the first front pillar to the second front pillar. The lighting device 28 extends vertically at the level of the upper portion 36. It is vertically distanced from the lower portion 34. The pivot joint 38 is vertically below the lighting device 28.

[0072] According to one embodiment, the lighting device 28 comprises a light grid 58. The light grid 58 is vertically positioned at the top 36. It includes a power supply 64. The light grid 58 has bars, for example vertical bars, and light sources. It decorates the vehicle and contributes to the perceived quality. The light grid 58 is a central light grid. The pivot joint 38 is vertically positioned below the light grid 58. This feature facilitates movement in the event of a frontal impact causing the lighting device 28 to recoil, despite its size.

[0073] In the event of a frontal collision, with complete or partial transverse overlap, the light device 28 retracts. The light device 28 is likely to reach the front pillar 20. Consequently, it displaces the upper portion 36 without deforming the lower portion 34. This feature preserves the integrity of the front pillar. 20. In general, the invention allows the integration of a prominent element at the level of the upper portion 36 while limiting the risk of damage.

[0074] Figure 3 shows a front view of a front pillar 20 of a motor vehicle structure, according to one embodiment of the invention. The motor vehicle may correspond to that shown in relation to one of Figures 1 to 2. A portion of the reinforcing frame 42 is shown. The reinforcing frame 42 comprises a lower stud fixed to the upper portion 36.

[0075] The lower portion 34 and the upper portion 36 each form a solid. They are each formed from a stamped sheet metal. The lower portion 34 has a perimeter rim to stiffen it. This rim delineates a pocket open at the front. This pocket receives the associated absorption chamber 22.

[0076] The lower portion 34 comprises a first width 44; the pivot joint 38 comprises a second width 46 that is smaller than the first width 44. The widths are preferably maximum widths. They are measured transversely. This configuration allows for better control of the behavior of the pivot joint 38 during a possible head-on collision.

[0077] The upper portion 36 includes a part offset inwards relative to the lower portion 34. The pivot joint 38 is aligned with the inner edge of the lower portion 34. The upper portion 36 and / or the pivot joint 38 extend transversely inwards towards the lower portion 34. This arrangement brings the pivot joint 38 closer to the center and facilitates the movements transmitted by the reinforcing frame 42 and / or the lighting device (not shown). The pivot joint 38 extends transversely inwards towards the front side member (not shown).

[0078] The pivot joint 38 includes a pin 48. The pin 48 passes through the lower portion 34 and the upper portion 36. In this embodiment, these portions form a hinge. The upper portion 36 is inserted into the lower portion 34, which has a fork. The pin 48 is cylindrical and defines an axis of rotation 50. The axis of rotation 50 is horizontal and preferably transverse.

[0079] According to an alternative embodiment of the invention, the axis of rotation of the pivot joint extends longitudinally. This configuration provides freedom of movement in the event of a lateral collision.

[0080] According to an alternative of the invention, the pivot joint comprises two hooks hooked to each other and open longitudinally.

[0081] According to a preferred embodiment, the reinforcing frame 42 is made of a plastic or composite material. The plastic material may include a thermoplastic material or a thermosetting material. According to a preferred embodiment, the plastic material is selected from the group comprising polypropylene, polyamide, polyphthalamide, polyetheretherketone, and polysulfide resins. Phenylene, polyamide-imide, polyetherimide, polyarylamide, polyepoxide, unsaturated polyester, vinyl ester, or polyester-vinylester. For example, the composite material comprises a matrix of a plastic material as described above with reinforcement. For example, the reinforcement comprises glass or carbon fibers.

[0082] The reinforcing frame 42 comprises at least 10% by weight of recycled plastic material based on the total weight of the plastic material; preferably from 10 to 80% by weight; more preferably from 20 to 60% by weight or from 30 to 40% by weight. The use of recycled plastic material reduces the vehicle's environmental footprint.

[0083] Figure 4 shows the interface between the upper portion 36 and the lower portion 34 of the front pillar 20 of a motor vehicle structure, according to an embodiment of the invention. The motor vehicle may correspond to the one shown in relation to one of Figures 1 to 3. The reinforcing frame is not shown.

[0084] The front pillar 20 includes a pivot joint 38 between the upper portion 36 and the lower portion 34. The pivot joint 38 includes a hook 52; preferably, the pivot joint 38 has a rotation axis 50. The rotation axis 50 passes through the hook 52. It is lateral. The pivot joint 38 further includes a pin 48 forming a trunnion. It constitutes a rotating bearing.

[0085] In the event of the light device moving backward, the upper portion 36 tilts backward relative to the lower portion 34. The pivot joint 38 is configured so that the upper portion 36 pivots by at least 10°, preferably by at least 20°, more preferably by at least 30°.

[0086] According to one option, the lower portion 34 and the upper portion 36 have equal thicknesses. The thicknesses are average thicknesses. They are measured longitudinally. This aspect optimizes the rigidity and compactness of the front pillar 20.

[0087] The hook 52 includes a longitudinal opening 54. The longitudinal opening 54 forms an entry and exit for the pin 48. The hook 52 has an internal groove 56 open longitudinally via the longitudinal opening 54. For example, the longitudinal opening 54 is open to the front. It is a front opening. The hook 52 houses the pin 48. The pin 48 is in the internal groove 56. The pin 48 is a transverse pin.

[0088] The hook 52, and more generally the pivot joint 38, provides vertical support. The lower portion 34 supports the upper portion 36, which in turn supports the reinforcing frame. The hook 52 grips the spindle 48, thus providing longitudinal support. The internal groove 56 may have an internal stop that retains the spindle and releases it when the threshold force is applied.

[0089] The pivot joint 38 is configured so that the pin 48 exits the hook 52 through the longitudinal opening 54 during a head-on collision at a higher speed or equal to a threshold speed. The pivot joint 38 is configured so that the spindle 48 exits the hook 52 through the longitudinal opening 54 when a frontal force greater than or equal to a threshold force is applied to the pivot joint 38.

[0090] The hook 52 allows for dual kinematics. These kinematics occur according to different stresses. The hook 52 allows both a tilting around the spindle 48, and a translation when the latter jumps out of the groove

[0091] According to one embodiment, the longitudinal opening 54 is formed on the lower portion 34. The pin 48 is integral with the upper portion 36. The pin 48 is welded to the sheet metal of the upper portion 36.

[0092] The upper portion 36 comprises an angled section 60 with a lower segment 62. The angled section 60 is vertical. The lower segment 62 forms the lower end of the upper portion 36. The pivot joint 38 is fixed to the lower segment 62. This allows for a longitudinal offset of the upper portion 36 relative to the lower portion 34. In this case, the upper portion 36 is forward of the lower portion 34. This allows it to be positioned closer to the reinforcing reinforcement (not shown).

[0093] According to an alternative of the invention, the throat is open towards the rear.

[0094] According to an alternative of the invention, the pin is integral with the upper portion.

[0095] According to an alternative embodiment of the invention, the pivot joint comprises a tube surrounding the brooch. The tube replaces the hook.

[0096] The invention comprises the combination of all the embodiments illustrated by all the figures.

[0097] Figures 2 and 3 are isometric views. They each respect a specific scale, real angles and real proportions.

Claims

Demands

1. Motor vehicle structure (12), the structure (12) comprising: at least one front side member (18) with a front end (32); a front pillar (20) fixed to the front end (32), the front pillar (20) comprising a lower portion (34), an upper portion (36); characterized in that the front pillar (20) comprises a pivot joint (38) connecting the lower portion (34) to the upper portion (36), the pivot joint (38) being configured to allow movement of the upper portion (36) relative to the lower portion (34) in the event of a collision.

2. Structure (12) according to claim 1, characterized in that the pivot joint (38) comprises a hook (52) and a pin (48); preferably, the pivot joint (38) has a transverse axis of rotation (50).

3. Structure (12) according to claim 2, characterized in that the hook (52) comprises a longitudinal opening (54); the pivot joint (38) being configured so that the pin (48) exits the hook (52) through the longitudinal opening (54) when a force greater than or equal to a threshold force is applied to the pivot joint (38).

4. Structure (12) according to claim 3, characterized in that the hook is formed by the lower portion (34), and the pin (48) is formed by the upper portion (36); preferably, the longitudinal opening (54) is open towards the front.

5. Structure (12) according to any one of claims 1 to 4, characterized in that the upper portion (36) comprises a bent section (60) with a lower segment (62); the pivot joint (38) being fixed to said lower segment (62).

6. Structure (12) according to any one of claims 1 to 5, characterized in that the lower portion (34) comprises a first width (44); the pivot joint (38) comprises a second width (46) which is smaller than the first width (44).

7. Structure (12) according to any one of claims 1 to 6, characterized in that the upper portion (36) and / or the pivot joint (38) extends transversely into the lower portion (34); preferably, the pivot joint (38) extends transversely into the at least one front spar (18).

8. Structure (12) according to any one of claims 1 to 7, characterized in that the structure (12) comprises a shock absorption box (22) capable of absorbing energy during a frontal impact, the absorption box (22) being fixed to the front of the lower portion (34), the pivot joint (38) being above the absorption box (22); preferably, the absorption box (22) is longitudinally in line with the front side member (18).

9. Motor vehicle (10) comprising a structure (12), characterized in that the structure (12) conforms to any one of claims 1 to 8; preferably, the motor vehicle (10) comprises a reinforcing frame (42) fixed to the upper portion of the front pillar (20), the pivot joint (38) being under the reinforcing frame (42).

10. Motor vehicle (10) according to claim 9, characterized in that the front pillar (20) is a first front pillar, the structure (12) comprises a second front pillar transversely opposed to the first front pillar, the motor vehicle (10) comprising a lighting device (28) extending transversely from the first front pillar to the second front pillar; the lighting device (28) extending at the level of the upper portion (36); preferably, the pivot joint (38) is vertically below the lighting device (28), and the lighting device (28) comprises a lighting grid (58).

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