Assembly for the front of a motor vehicle including a two-part hood

Abstract

The assembly (1) for the front of a motor vehicle comprises: - a base (3) intended to be fixed to a motor vehicle support structure, the base comprising a frame (5) defining a through opening (6), - a motor vehicle hood (8) mounted on the base (3). The motor vehicle hood (8) is formed in two parts, a first part (9) of the hood (8) being fixed relative to the base (3) and a second part (10) of the hood (8) being movable relative to the base (3) between a closed position in which the second part (10) of the hood (8) closes the through opening (6) of the base (3) and an open position. Figure 2

Description

Title of the invention: Assembly for the front of a motor vehicle comprising a two-part hood. Technical field

[0001] The invention relates to an assembly for a front of a motor vehicle, including in particular a hood of a motor vehicle, as well as a motor vehicle comprising such an assembly and a method of manufacturing a motor vehicle comprising such an assembly. State of the art

[0002] Prior art is known of a motor vehicle comprising a hood designed to open to allow access to a compartment generally containing either the engine and vehicle control or maintenance points, or a storage compartment. Typically, the hood is pivotally mounted on hinges between an open and a closed position. In some cases, the motor vehicle also includes struts to assist a user in opening the hood. The hood hinges are positioned either at the front of the vehicle or near the windshield so as to be located at one of the hood's longitudinal ends. The hinges and, optionally, the struts, are designed to be sufficiently robust to withstand the mechanical stresses related to the overhanging mass of the hood when it is open.

[0003] Generally speaking, the aim is to provide a motor vehicle that is as light as possible in order, in particular, to reduce fuel consumption for internal combustion or hybrid vehicles, or electricity consumption for electric or hybrid vehicles. The issue of reducing the weight of motor vehicles is especially important for electric vehicles, which carry electric batteries weighing several hundred kilograms. Summary of the invention

[0004] The invention aims in particular to provide an assembly for a motor vehicle, including in particular a motor vehicle hood, which is as light as possible.

[0005] To this end, the invention relates to an assembly for the front of a motor vehicle, comprising: - a base intended to be fixed to a motor vehicle support structure, the base comprising a frame defining a through opening, - a motor vehicle hood mounted on the base. characterized in that the hood of a motor vehicle is formed in two parts, a first part of the hood being fixed relative to the base and a second part of the hood being movable relative to the base between a closed position in which the second part of the hood closes the through opening of the base and an open position.

[0006] The two-part hood, with one fixed and one movable section, allows the second part of the hood, which is movable between a closed and an open position, to be precisely sized according to the part of the vehicle located under the hood that one wishes to access, such as an engine compartment containing inspection or maintenance points for the motor vehicle, or a storage compartment. It follows, therefore, that the dimensions, and thus the mass, of the second part of the hood, which is movable between an open and a closed position, are reduced compared to a hood of the prior art, for the same vehicle.This reduction in the mass of the moving part of the hood allows for a reduction in the dimensions and thickness of the hood's articulation means, such as hinges and possibly struts, designed to withstand the mechanical stresses related to the cantilevered mass of the moving part of the hood when it is in the open position, compared to a one-piece hood of the prior art. The reduction in the mass of the hinges, and possibly the struts, is advantageous because it reduces the overall mass of the assembly and therefore of the motor vehicle on which it is mounted. Furthermore, in some embodiments, the reduction in the mass of the moving part of the hood is such that it eliminates the need for struts assisting a user in opening the hood.Furthermore, the reduced dimensions of the second part of the hood make it easier for a user to handle, in particular by facilitating the opening and closing of the hood.

[0007] Furthermore, the first and second parts of the hood can be made of different materials and / or have different thicknesses. For example, the thickness of the first part of the hood, which is fixed relative to the base, can be less than the thickness of the second part. Alternatively, at least one component of the first part of the hood, such as an outer skin or lining, can be thinner than a corresponding component of the second part. This makes it possible to reduce the overall mass of the hood and therefore the mass of the entire assembly for the front of a motor vehicle.The materials used to make the first and second parts of the hood are chosen, for example, from steels, aluminium, plastic materials, thermoplastic or thermosetting composite materials possibly reinforced with talc or reinforcing fibre, such as fibreglass, fibre of . carbon, flax fibers, hemp fibers or mixtures of several of these materials.

[0008] The fact that a portion of the hood is fixed also allows for the placement beneath this portion of vehicle components that are not intended to be easily accessible and / or that are fragile and / or expensive. For example, an Acoustic Vehicle Alert System (AVAS), a telematics antenna, a satellite antenna, a display device, an airbag, a radar, a lidar, a camera, or a windshield wiper motor can be placed under the fixed portion of the hood. These functional components are thus protected by the first fixed portion of the hood even when the second, movable portion of the hood is in the open position, thereby reducing their risk of damage. Furthermore, the fact that the first portion of the hood is fixed prevents this part of the hood from being subjected to excessive stress and from having to be dimensioned to withstand the mechanical stresses of an opening hood.Therefore, we can expect the first part of the hood to be lighter.

[0009] The use of a base, on which the hood is mounted, facilitates the manufacture of the motor vehicle. Indeed, the functional components supported by the base are referenced to the base, thus simplifying their positioning relative to one another. It is therefore easier to adjust the clearances and flushness between these different functional components. A support structure for the motor vehicle corresponds, for example, to a body-in-white of the motor vehicle.

[0010] The term "closed position in which the second part of the hood closes the through-opening in the base" refers to the position of the second part of the hood when it covers the through-opening in the base so as to prevent access from the outside. This is understood to be the conventional position of the hood when the vehicle is in use, in which the hood typically covers an engine compartment or a storage compartment. The closed position is typically maintained by locking means that can be unlocked, for example, from inside or outside the vehicle.

[0011] The "open position" of the second part of the hood refers to any position of the second part of the hood when it is not in the closed position. The open position allows, in particular, access to the through-opening in the base from the outside. Specifically, it allows access to the compartment of the motor vehicle located under the second part of the hood, typically an engine compartment or a storage compartment.

[0012] The invention may include one or more of the following optional features, taken alone or in combination:

[0013] The assembly further comprises at least one functional component of a motor vehicle positioned at least partially within an internal volume delimited by the base and the first part of the hood. The functional component is selected from among a display device, an airbag, a satellite antenna, a telematics antenna, a windshield wiper motor, a radar, a lidar, a camera, or an acoustic warning system. It is understood that the functional component(s) are located under the first part of the hood, which is fixed relative to the base. This provides advantageous protection for the functional component(s) against potential chemical or mechanical damage. In particular, it is understood that the functional component(s) arranged within the internal volume are not exposed to a risk of damage when the second part of the hood, which is movable relative to the base, is in the open position.In one embodiment, the first part of the motor vehicle hood comprises an inner face, facing the internal volume, and an outer face, opposite the inner face, with at least one of the functional components arranged within the internal volume being fixed to the inner face of the first part of the motor vehicle hood. For example, when the first part of the hood is formed by an outer skin, also called an outer panel, it can be provided that at least one functional component is fixed to an inner face of the outer skin. In another example, when the first part of the hood is formed by an outer skin and an internal reinforcing structure, also called a lining, it can be provided that at least one functional component is on an inner face of the internal reinforcing structure.

[0014] The assembly further includes electrical connection means intended to be connected to complementary electrical connection means carried by a support structure of a motor vehicle so as to electrically connect the assembly to the rest of the motor vehicle, the base further including guidance means intended to cooperate with complementary guidance means carried by the support structure of the motor vehicle so as to guide the placement of the base on the support structure of the motor vehicle, the guidance means being configured so that, after the placement of the base on the support structure has been guided, the electrical connection means of the assembly are electrically connected to the complementary electrical connection means of the support structure of the motor vehicle.The installation of the base and the electrical connection of its electrical or electronic components to the rest of the vehicle is thus facilitated. Specifically, during the installation of the base, the electrical connection of the electrical or electronic components carried by the base is made without requiring any additional intervention from an operator or a robot.

[0015] The assembly further includes hood articulation means attached on one side to the base and on the other side to the second part of the hood so as to allow movement of the second part of the hood between its open and closed positions. It is understood that the hood can advantageously be attached to the base before the base is placed on the vehicle's support structure, so that placing the base on the vehicle's support structure simultaneously allows the hood to be placed on the vehicle. The assembly of the motor vehicle is thus facilitated. Furthermore, it is understood that the positioning of the hood relative to the vehicle's support structure, and therefore relative to the other components of the motor vehicle, is also facilitated since the correct positioning of the base simultaneously allows for the correct positioning of the hood. In particular, the management of assembly clearances is simplified.

[0016] Preferably, the first and second parts of the hood are arranged along a main longitudinal axis of the hood. In a first embodiment, the second part of the hood is the part furthest forward on the vehicle. In other words, following a main longitudinal axis of the vehicle from the front to the rear, one encounters the second part of the hood, the first part of the hood, and a windshield. According to this embodiment, it is possible, for example, to provide that functional components of the vehicle, located under the first part of the hood so as to be protected, are positioned as close as possible to the vehicle's electrical wiring connections, which are generally located under the dashboard.The electrical connection between the functional electrical or electronic components of the assembly and the rest of the motor vehicle is thus facilitated. According to another embodiment, the second part of the hood is the rearmost part of the motor vehicle. In other words, following a main longitudinal axis of the motor vehicle from the front to the rear, one encounters the first part of the hood, the second part of the hood, and a windshield of the motor vehicle.

[0017] The length of the second part of the hood along the main longitudinal axis of the hood represents between 1% and 99% of the total length of the hood. It is understood that the length of the second part of the hood along the main longitudinal axis of the hood, added to that of the first part of the hood, represents 100% of the total length of the hood. It is thus understood that it is possible to adapt the length of the first or second part of the hood according to the intended use. In particular, it can be ensured that the surface area occupied by the first part of the hood is sufficient to cover, and therefore protect, one or more functional components of the assembly.

[0018] Preferably, the length of the second part of the hood along the main longitudinal axis of the hood represents between 20% and 80% of the total hood length. Conventionally, the hood hinges are arranged to be quite close to the windshield, in the area of ​​the cowl grille. This positioning has the disadvantage of corresponding to the area where an adult pedestrian's head would strike the vehicle in a frontal collision. The hinges generally constitute hard points that increase the risk of serious injury in a collision. By ensuring that the second part of the hood extends, at most, to 80% of the total hood length, the hinges are moved away from the windshield and the cowl grille and are outside the impact zone for an adult pedestrian's head in a frontal collision. This reduces the risk of serious injury in a collision with a pedestrian.Furthermore, in this way, the means of articulation are arranged in a region that is not cluttered and in which it is possible to provide sufficient space for the means of articulation to compress vertically in the event of an impact in order to reduce the risk of serious injury.

[0019] Preferably, the first part of the hood and the second part of the hood each extend from a first lateral edge of the base to a second lateral edge of the base, opposite the first lateral edge of the base. Depending on the embodiment, the first part of the hood and / or the second part of the hood may extend from an inner face of the first lateral edge of the base to an inner face of the second lateral edge of the base. In other words, from a plan view, the first part of the hood and / or the second part of the hood are contained within the space delimited by the two lateral edges. Alternatively, the first part of the hood and / or the second part of the hood may overlap at least partially the first lateral edge of the base and / or the second lateral edge of the base.In other words, from a plan view, the first part of the hood and / or the second part of the hood extend beyond the limits formed by the inner faces of the two lateral edges of the base.

[0020] Advantageously, the base frame has a vertical step at one of its front ends. This improves access to the compartment defined by the base frame. Conventionally, the frame is substantially flat. By providing a vertical step, the access threshold to the compartment defined by the frame is lowered, thus facilitating access to it. As mentioned previously, this compartment generally includes either the engine and control or maintenance points of the motor vehicle, or a storage compartment. "Front end of the base" refers to the end of the base that is furthest forward when the assembly is mounted on a motor vehicle. "Vertical step" refers to the fact that the frame, whose side and rear edges extend relatively in the same plane, presents, at its front end, a offset along a vertical axis relative to a classic operating position of a motor vehicle on which the assembly would be mounted.

[0021] Preferably, the hood comprises, at its front longitudinal end, a vertical wall arranged opposite the vertical offset of the base frame. It is understood that the vertical wall of the hood effectively closes the compartment delimited by the frame when the latter includes, at its front edge, a vertical offset. Furthermore, the presence of this vertical wall at the front longitudinal end of the hood reduces the risk of injury in the event of a frontal collision with a pedestrian, particularly to the hip or pelvis of an adult or to the head of a child.

[0022] Advantageously, the base forms a support for at least one of the following: an optical unit, at least one wing component, a support for at least one wing component, or electrical charging means. "The base forms a support for" means that the component for which the base forms a support is fixed to the base directly or indirectly, such that the attachment of this component to the rest of the motor vehicle is effected, at least in part, and preferably exclusively, by attaching the base to the motor vehicle's support structure. It is understood that the assembly of the motor vehicle is facilitated. Indeed, by fixing the base to the motor vehicle's support structure, it is thus possible to simultaneously fix one or more other functional components of the motor vehicle to the motor vehicle.Furthermore, the arrangement of these functional components relative to each other on the base, as well as in relation to the functional or structural components of the rest of the motor vehicle, is facilitated. An optical unit includes, for example, the optical unit used for the road lighting of the motor vehicle or a lighting system that contributes to the vehicle's overall appearance. The optical unit includes, for example, a lighting module comprising at least one optical unit and / or lighting means that contribute to the vehicle's overall appearance. The lighting module extends, for example, at the front of the base, from one lateral edge of the base to a second lateral edge of the base. Electrical charging means correspond, for example, to means enabling connection to an electrical power supply device for charging an electric vehicle battery.This is typically a socket into which an electrical connection device linked to an electric charging station is plugged.

[0023] The invention also relates to a motor vehicle comprising an assembly for a front of a motor vehicle as described above.

[0024] Finally, the invention relates to a method of manufacturing a motor vehicle, in which: a) a two-part hood is fixed to a base, a first part of the hood being fixed relative to the base and a second part of the hood being movable relative to the base between an open position and a closed position, so as to obtain an assembly for a front of a motor vehicle as described above, b) the assembly obtained in step a) is mounted on a motor vehicle support structure.

[0025] It is noted that the method according to the invention allows the two-part hood to be easily attached to the vehicle's support structure. Furthermore, when the base supports other functional components of the vehicle, these are also easily installed when the base is attached to the vehicle's support structure. Brief description of the figures

[0026] The invention will be better understood upon reading the following description, given solely by way of example and made with reference to the accompanying drawings in which:

[0027] Fig. 1 is a perspective view of the front of a motor vehicle comprising an assembly according to an embodiment of the invention in which the second part of the hood is in the closed position.

[0028] Fig. 2 is a view of a part of the front of the motor vehicle of Fig. 1 in which the second part of the hood is in the open position.

[0029] Figure 3 is an exploded perspective view of part of the assembly of Figure 1 in which only the hood and the base are shown.

[0030] [Fig.4] is an exploded perspective view of the whole of [Fig.1]. Detailed description

[0031] Figures 1 to 4 show an assembly 1 for the front of a motor vehicle 2 according to an embodiment of the invention.

[0032] Assembly 1 comprises a base 3 intended to be fixed to a support structure 4 of the motor vehicle 2 ([Fig. 1]). The base 3 is intended, in particular, to provide support for functional components of the motor vehicle 2. The base 3 includes a frame 5 defining a through opening 6. According to the embodiment shown, the frame 5 of the base 3 has a vertical notch 7 at one front end of the base 3 (see [Fig. 2]). This improves access to the compartment defined by the frame 5 of the base 3. According to the embodiments, this compartment generally includes either the engine and control or maintenance points of the motor vehicle 2, or a storage compartment. In the present case, the motor vehicle 2 is an electric vehicle and the compartment Defined by frame 5 is a storage compartment, sometimes called a "frunk." Thus, the vertical recess 7 lowers the loading sill of the storage compartment it provides access to, making it easier to use. The base 3 can be made of any material compatible with its function as a support for functional components of the motor vehicle 2. In this case, the base is made of a material chosen, for example, from steels, aluminum, plastics, thermoplastic or thermosetting composite materials, possibly reinforced with talc or reinforcing fibers such as glass fibers, carbon fibers, flax fibers, hemp fibers, or a mixture of several of these materials.

[0033] Assembly 1 further includes a hood 8 of a motor vehicle 1 mounted on the base 3. The hood 8 is formed in two parts, a first part 9 of the hood 8 being fixed relative to the base 3 and a second part 10 of the hood 8 being movable relative to the base 3 between a closed position in which the second part 10 of the hood 8 closes the through opening 6 of the base 3 ([Fig. 1]) and an open position ([Fig. 2]). According to the present embodiment, each part 9, 10 of the hood 8 comprises an outer skin 22, also called the outer panel, and an internal reinforcing structure 23, also called the lining (Figures 2 and 4). According to one embodiment, it is possible to use an internal reinforcement structure 23 for only one of the parts 9, 10 of the hood 8 or it is possible to provide that both parts 9, 10 of the hood 8 are each formed solely of an outer skin 22 and therefore without an internal reinforcement structure 23.

[0034] In the present case, the first part 9 of the hood 8 and the second part 10 of the hood 8 follow one another along a principal longitudinal axis A of the hood and each extends from a first lateral edge of the base 3 to a second lateral edge of the base 3, opposite the first lateral edge of the base 3. According to the embodiment, the first part 9 of the hood and / or the second part 10 of the hood 8 may extend from an inner face of the first lateral edge of the base 3 to an inner face of the second lateral edge of the base 3. In other words, in plan view, the first part 9 of the hood 8 and / or the second part 10 of the hood 8 is contained within the space delimited by the two lateral edges of the base 3. Alternatively, the first part 9 of the hood 8 and / or the second part 10 of the hood 8 may at least partially overlap the first lateral edge of base 3 and / or the second lateral edge of base 3.In other words, in plan view, the first part 9 of the hood 8 and / or the second part 10 of the hood 8 exceed the limits formed by the inner faces of the two lateral edges of the base 3. According to the embodiment shown in figures 1 to 4, it is noted that the first and second parts 9, 10 of the hood 8 exceed the limits formed by the inner faces of the two lateral edges of the base. 3 and, thus, overlap at least in part these lateral edges of base 3 (figures 2 and 3).

[0035] As illustrated in Figures 1, 2, and 3, the second part 10 of the hood 8 is the part located furthest forward on the motor vehicle 2 when the assembly 1 is mounted on the support structure 4 of the motor vehicle 2. In other words, moving from front to rear along the motor vehicle 2, one encounters successively the bumper 13 of the motor vehicle 2, the second part 10 of the hood 8, the first part 9 of the hood 8, and the windshield (not shown). According to another embodiment, the first part 9 of the hood 8 may be the part located furthest forward on the motor vehicle 2. In this case, moving from front to rear along the motor vehicle 2, one encounters successively the bumper 13 of the motor vehicle 2, the first part 9 of the hood 8, the second part 10 of the hood 8, and the windshield (not shown).

[0036] According to the present embodiment, the length LD of the second part 10 of the hood 8 along the main longitudinal axis A of the hood 8 represents approximately 80% of the total length LT of the hood 8 ([Fig. 3]). According to the embodiments, it is understood that the length LD of the second part 10 of the hood 8 along the main longitudinal axis A of the hood 8 varies and is in particular between 1% and 99% of the total length LT of the hood 8, preferably between 20% and 80% of the total length LT of the hood 8. It is understood that a person skilled in the art will adapt the length LD of the second part 10 of the hood 8, which is movable relative to the base 3, according to the size of the compartment it covers. Furthermore, it is understood that the remainder of the length LT of the hood 8 is occupied by the first part 9 of the hood 8, which is fixed relative to the base 3.Thus, a person skilled in the art will also adapt the length LD of the second part 10 of the hood 8 so as to obtain a first part 9 of the hood 8 having sufficient dimensions, for example for a function of protecting functional components of the motor vehicle 2 which would be placed under this first fixed part 9 of the hood 8.

[0037] The second part 10 of the hood 8 includes, at its front longitudinal end, a vertical wall 21 arranged opposite the vertical notch 7 of the front end of the base 3. It is understood that the vertical wall 21 of the hood 8 makes it possible to effectively close the compartment delimited by the frame 5 which includes the vertical notch 7. Furthermore, the presence of this vertical wall 21 at the front longitudinal end of the hood 8 makes it possible to reduce the risk of injury in the event of a frontal collision with a person.

[0038] Assembly 1 includes means for articulating the hood 8 relative to the base 3 which are configured to deform or break when an acceleration applied to these means for articulating the hood 8 relative to the base 3 exceeds a predetermined threshold. The fact that the articulation means of the hood 8 of a motor vehicle 2 relative to the base 3 are configured to deform or break when an acceleration applied to these articulation means exceeds a predetermined threshold allows for the prediction that these articulation means will deform or break during a collision with a pedestrian, so as to absorb at least part of the impact energy and avoid forming hard points that could cause serious injury. The articulation means of a hood 8 of a motor vehicle 2 are generally located in an area where, in the event of a frontal collision with a pedestrian, the pedestrian's head will strike the bodywork. Thus, by allowing the hood's articulation means to deform or break, the risk of injury to the pedestrian, particularly to their head, is reduced, or at the very least, the severity of any potential injuries to the pedestrian, particularly to their head, is reduced.The deformation or breakage of the articulation means allows for greater displacement of the hood of a motor vehicle, particularly in the event of a collision with a pedestrian, regardless of the location of the impact on the hood, provided that the acceleration applied to the articulation means by the hood deformation during the impact exceeds the predetermined threshold. This greater displacement of the motor vehicle's hood allows for better shock absorption and therefore a reduction in the energy transmitted to the pedestrian, and thus, potentially, a reduction in the severity of any injuries the pedestrian might sustain as a result of the impact.

[0039] The predetermined threshold for the acceleration at which the articulation means deform or break varies according to the embodiment. This threshold is determined based, in particular, on the characteristics of the motor vehicle 2, the characteristics of the hood 8, and the characteristics of the articulation means, so that the articulation means do not deform or break when this is not necessary, for example, when an acceleration expected during normal use of the motor vehicle is applied to the articulation means. This threshold is further determined so that the articulation means do not deform or break when subjected to an acceleration that falls within a range corresponding to a collision with a pedestrian, in particular a collision with the pedestrian's head at the level of the articulation means or a collision with the pedestrian's body on another part of the hood.

[0040] In the present case, the articulation means of the cover 8 comprise hinges 11, hinge supports 11, and means for attaching the hinges 11 to the respective hinge supports 12. The cover 8 is attached to the base 3 at least partially by means of the hinges 11. In particular, according to the present embodiment, each hinge 11 is attached, on the one hand, to the base 3 by means of the hinge support 11 and, on the other hand, to the second part 10 of the cover 8. in order to allow movement of the second part 10 of the hood 8 between its open and closed positions. According to other embodiments, a portion of the base 3 itself may form a support for the hinges 11. It is understood that the length of the second movable part 10 of the hood 8 influences the longitudinal positioning of the hinges 11. Thus, the shorter the second movable part 10 of the hood 8, the further the hinges 11 are positioned at the front of the motor vehicle 2, and the longer the second movable part 10 of the hood 8, the further the hinges 11 are from the front of the motor vehicle 2. It is understood that this reasoning applies to the arrangement of the first and second parts 9, 10 of the hood 8 and the hinges 11 according to the present embodiment.Modulating the positioning of the hinges 11 advantageously allows the hinges 11 to be placed in the position determined to be the least likely to cause serious injury in the event of a frontal collision with a pedestrian. In the present case, the hinge 11 supports 12 are formed by supports of at least one wing section 17a, 17b, each of which is mounted on the base 3. As illustrated in [Fig. 4], the assembly 1 comprises two supports of at least one wing section 17a, 17b, forming respectively a support for a first wing 17a and a second wing 17b of the motor vehicle 2.

[0041] As illustrated in [Fig.4], the base 3 forms a support for several functional components of the motor vehicle 2. In particular, according to the present embodiment, the base 3 forms a support for a display device (not shown), an airbag module 14, a satellite antenna (not shown), a telematics antenna (not shown), a windshield wiper motor 15, a radar (not shown), a lidar (not shown), a camera (not shown), an acoustic warning system (not shown), an optical unit 16, at least one wing part 17a, 17b, a support for at least one wing part - corresponding to the hinge support 12 11, electrical connection means 18 and electrical charging means 19.It is understood that the fact that base 3 serves as a support for several functional components of the motor vehicle facilitates the assembly of motor vehicle 2, since fixing base 3 to the support structure 4 of motor vehicle 2 allows for the correct fixing and positioning of all the functional components supported by base 3, both relative to each other and to the rest of motor vehicle 2. It is understood in particular that adjustments to mounting clearances and flushness are facilitated.

[0042] The fact that the base 3 carries the wiper motor 15 and the wipers 15 themselves facilitates the management of risks to a pedestrian in the event of a frontal collision. In particular, the wipers can be provided for to be fixed to the base by means of at least one fusible support configured to deform or break. In the event of a collision with a pedestrian, this deformation or rupture helps to reduce the energy transmitted to the pedestrian during the impact, thus reducing the risk of injury.

[0043] The fact that the base 3 carries at least one wing section 17a, 17b and / or a support for at least one wing section 17a, 17b facilitates the assembly of the motor vehicle 2. In particular, since the hood 8 and the wing section 17a, 17b and / or the support 18 for at least one wing section 17a, 17b are all fixed to the base 3, managing the mounting clearances between these different elements is simplified. Specifically, it is understood that it is possible to adjust the mounting clearances and the flushness between the hood 8 and the wing section 17a, 17b even before the base 3 has been fixed to the support structure 4 of the motor vehicle 2.

[0044] The optical unit 16 comprises, in this case, two optical blocks for the road lighting of the motor vehicle 2. The fact that the base 3 supports the optical blocks of the optical unit 16 facilitates their respective positioning, particularly in relation to the hood 8, but also in relation to the bumper 13 or the fenders 17a, 17b. The optical blocks of the optical unit 16 can be provided for by means of at least one fusible support configured to deform or break in the event of a collision with a pedestrian. This deformation or breakage notably reduces the energy transmitted to the pedestrian during the collision and thus reduces the risk of injury to the pedestrian.

[0045] The means 19 for electric charging correspond, in the present case, to means enabling connection to an electrical power supply device for charging an electric battery (not shown) of the motor vehicle 2. This is typically a socket into which an electrical connection element connected to an electric charging station is plugged.

[0046] According to the present embodiment, several functional components of the motor vehicle 2 are positioned in an internal volume delimited by the base 3 and the first fixed part 9 of the hood 8. It is understood that this internal volume corresponds to the space located under the first fixed part 9 of the hood 8. In the present case, the functional components that are arranged in the internal volume are mounted on the base 3. As illustrated in [Fig. 3], the base 3 includes a housing 20 intended to receive at least the airbag module 14. It can be envisaged that the other functional components arranged at least partially in the volume are chosen at least from among the display device, the satellite antenna, the telematics antenna, the windshield wiper motor 15, the radar, the lidar, the camera or the acoustic warning system.It is understood that the functional organs arranged at least in part within the internal volume are protected from possible chemical or mechanical aggressions, in particular thanks to the presence of the first fixed part 9 of the hood 8 which prevents these functional organs. are not exposed to a risk of damage when a user wishes to open the hood 8 to access the engine compartment or the storage compartment.

[0047] According to this embodiment, assembly 1 further comprises electrical connection means 18 ([Fig. 4]) intended to be connected to complementary electrical connection means carried by the motor vehicle 2 so as to electrically connect assembly 1 to the rest of the motor vehicle 2. It is understood that such an electrical connection makes it possible, in particular, to electrically connect at least one of the functional components carried by the base 3 to a power source, such as an electric battery, carried by the rest of the motor vehicle 2 in order to be supplied with electrical energy. The base 3 further comprises guidance means (not shown) intended to cooperate with complementary guidance means (not shown) carried by the motor vehicle 2 so as to guide the placement of the base 3 on the support structure 4 of the motor vehicle 2.The guidance means are configured so that, after the placement of the base 3 on the support structure 4 has been guided, the electrical connection means 18 of assembly 1 are electrically connected to the complementary electrical connection means of the motor vehicle 2. The guidance means and the complementary guidance means are, for example, formed by protrusions and hollows of complementary shapes and intended to guide the placement of the base 3 and to orient it so as to make the electrical connection means 18 and the complementary electrical connection means coincide.

[0048] A method for manufacturing a motor vehicle 2 according to an embodiment of the invention is described below. According to this method: a) a hood 8 in two parts 9, 10 is fixed to a base 3, a first part 9 of the hood 8 being fixed relative to the base 3 and a second part 10 of the hood 8 being movable relative to the base 3 between an open position and a closed position so as to obtain an assembly 1 as described previously; b) We mount the assembly 1 obtained in step a) onto a support structure 4 of motor vehicle 2.

[0049] It is therefore understood that the process includes a first pre-assembly phase during which the assembly 1 is prepared for attachment to the support structure 4 of the motor vehicle. In particular, in addition to attaching the hood 8 in two parts 9, 10 to the base 3, it is understood that any functional component of the motor vehicle 2 that one wishes to have supported by the base 3 can also be attached to the base 3. During step b) of mounting assembly 1 onto the support structure 4, the base 3, the hood 8, and all the functional components carried by the base 3 are thus mounted in a single operation onto the support structure 4 of the motor vehicle 2. As described previously, it is advantageously provided that the base 3 includes means for guidance for the placement of base 3 on support structure 4 and that support structure 4 includes additional guidance means to facilitate the placement of base 3 and the electrical connection of the functional components carried by base 3 to the rest of the motor vehicle 2.

[0050] The invention is not limited to the embodiment shown in the detailed description, and other embodiments will be obvious to those skilled in the art. Reference list

[0051] 1: assembly for front end of motor vehicle 2: motor vehicle 3: base 4: Support structure of the motor vehicle 5: frame 6: through opening of the base 7: Vertical stall 8: hood 9: First part of the hood 10: Second part of the hood 11: Hood hinges 12: Hinge support - supports at least one wing section 13: bumper 14: Airbag module 15: Windshield wiper 16: optical unit 17a, 17b: wing 18: means of electrical connection 19: means of electric charging 20: Housing 21: vertical wall 22: outer skin 23: Internal reinforcement structure A: main longitudinal axis of the hood LT: total hood length LD: length of the second part of the hood

Claims

Demands

1. Assembly (1) for a front of a motor vehicle (2), comprising: - a base (3) intended to be fixed on a support structure (4) of a motor vehicle (2), the base (3) comprising a frame (5) delimiting a through opening (6), - a hood (8) of a motor vehicle (2) mounted on the base (3), characterized in that the hood (8) of the motor vehicle (2) is formed in two parts, a first part (9) of the hood (8) being fixed with respect to the base (3) and a second part (10) of the hood (8) being movable with respect to the base (3) between a closed position in which the second part (10) of the hood (8) closes the through opening (6) of the base (3) and an open position.

2. Assembly (1) according to the preceding claim, wherein the first part (9) of the hood (8) and the second part (10) of the hood (8) follow one another along a principal longitudinal axis (A) of the hood (8).

3. Assembly (1) according to claim 2, wherein the length (LD) of the second part (10) of the hood (8) along the main longitudinal axis (A) of the hood (8) represents between 1% and 99% of the total length of the hood (8).

4. Assembly (1) according to the preceding claim, wherein the length (LD) of the second part (10) of the hood (8) along the main longitudinal axis (A) of the hood (8) represents between 20% and 80% of the total length (LT) of the hood (8).

5. Assembly (1) according to any one of the preceding claims, wherein the first part (9) of the hood (8) and the second part (10) of the hood (8) each extend from a first lateral edge of the base (3) to a second lateral edge of the base (3), opposite the first lateral edge of the base (3).

6. Assembly (1) according to any one of the preceding claims, further comprising at least one functional component of a motor vehicle (2) positioned at least partially within an internal volume delimited by the base (3) and the first part (9) of the hood (8), the functional component being selected from a display device, an airbag (14), a satellite antenna, a telematics antenna, an engine windshield wiper (15), radar, lidar, camera or acoustic warning system.

7. Assembly (1) according to any one of the preceding claims, further comprising electrical connection means (18) for connection to complementary electrical connection means carried by a motor vehicle support structure (4) so ​​as to electrically connect the assembly (1) to the rest of the motor vehicle (2), the base (3) further comprising guidance means for cooperation with complementary guidance means carried by the motor vehicle support structure (4) so ​​as to guide the placement of the base (3) on the motor vehicle support structure (4) (2), the guidance means being configured so that, upon guidance of the placement of the base (3) on the support structure (4),The electrical connection means (18) of the assembly (1) are electrically connected to the complementary electrical connection means carried by the support structure (4) of the motor vehicle (2).

8. Assembly (1) according to any one of the preceding claims, further comprising articulation means (11) of the hood (8) fixed on one side to the base (3) and on the other side to the second part (10) of the hood (8) so as to allow movement of the second part (10) of the hood (8) between its open position and its closed position.

9. Assembly (1) according to any one of the preceding claims, wherein the base (3) forms a support for at least one of an optical unit (16), at least one wing part (17a, 17b), a support (12) for at least one wing part (17a, 17b), or electrical recharging means (19).

10. Motor vehicle (2) characterized in that it comprises an assembly (1) for a front of motor vehicle (2) according to any one of the preceding claims.

11. A method for manufacturing a motor vehicle (2), characterized in that: a) a hood (8) in two parts is fixed to a base (3), a first part (9) of the hood (8) being fixed relative to the base (3) and a second part (10) of the hood (8) being movable relative to the base (3) between an open position and a closed position, so as to to obtain an assembly (1) for a front end of a motor vehicle (2) according to any one of claims 1 to 9, b) We mount the assembly (1) obtained in step a) onto a support structure (4) of a motor vehicle (2).

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