Assembly for the front of a motor vehicle comprising a two-part bonnet

Abstract

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

Description

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

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

[0002] Prior art depicts a motor vehicle with a hood designed to open, providing access to a compartment that typically contains either the engine and vehicle control or maintenance points, or a storage compartment. Classically, the hood is hinged to pivot between an open and a closed position. In some cases, the 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 possibly the struts, are designed to be robust enough to withstand the mechanical stresses caused by the hood's cantilevered mass when it is open.

[0003] Generally speaking, the goal is to provide the lightest possible motor vehicle, particularly to reduce fuel consumption for internal combustion engine or hybrid vehicles, or electricity consumption for electric or hybrid vehicles. The issue of vehicle weight reduction is especially important for electric vehicles, which carry batteries weighing several hundred kilograms.

[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 on a motor vehicle support structure, the base comprising a frame delimiting a through opening, - a motor vehicle hood mounted on the base, characterized in that the motor vehicle hood 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, which moves between a closed and an open position, to be precisely sized to accommodate the area of ​​the vehicle located beneath the hood that requires access, such as an engine compartment containing inspection or maintenance points, or a storage compartment. It follows, therefore, that the dimensions, and thus the mass, of the second part of the hood, which moves between an open and a closed position, are reduced compared to a hood of the previous design 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 they make opening and closing the hood easier.

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

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

[0009] Using a base, on which the hood is mounted, simplifies the manufacturing of the motor vehicle. The functional components supported by the base are referenced to it, making their relative positioning easier. This simplifies adjusting the clearances and flushness between these different functional components. A motor vehicle support structure corresponds, for example, to a body-in-white model 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, preventing access from the outside. This is understood to be the standard hood position when the vehicle is in use, typically covering an engine compartment or storage compartment. The closed position is typically maintained by locking mechanisms 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 access to the through-opening in the base from the outside. In particular, it allows access to the vehicle compartment 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 also includes at least one functional component of a motor vehicle, positioned at least partially within an internal volume defined by the base and the first section of the hood. This 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 section of the hood, which is fixed relative to the base. This design provides advantageous protection 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 section 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 attached 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, at least one functional component may be attached 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, at least one functional component may be located 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 are 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 also includes hood hinges attached to the base and the second part of the hood, allowing the second part to move 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. This facilitates the assembly of the motor vehicle. Furthermore, it is understood that positioning 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 also ensures the correct positioning of the hood. In particular, managing assembly clearances is simplified.

[0016] Preferably, the first and second parts of the hood are arranged along a main longitudinal axis. In one embodiment, the second part of the hood is the part furthest forward on the vehicle. In other words, following a main longitudinal axis from the front to the rear of the vehicle, one encounters the second part of the hood, the first part of the hood, and the 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 for protection, are positioned as close as possible to the vehicle's electrical wiring connections, which are generally located under the dashboard. This facilitates the electrical connection between the functional electrical or electronic components and the rest of the vehicle.In another embodiment, the second part of the hood is the rearmost part of the motor vehicle. In other words, following a principal 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 section of the hood along its main longitudinal axis represents between 1% and 99% of the total hood length. It is understood that the combined length of the second section of the hood along its main longitudinal axis and the first section of the hood represents 100% of the total hood length. It is therefore possible to adapt the length of either the first or second section of the hood to suit the intended use. In particular, it can be ensured that the surface area occupied by the first section of the hood is sufficient to cover, and thus protect, one or more of the assembly's functional components.

[0018] Preferably, the length of the second section of the hood along the main longitudinal axis should be between 20% and 80% of the total hood length. Traditionally, the hood hinges are positioned 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 crash. By ensuring that the second section of the hood extends, at most, to 80% of the total hood length, the hinges are moved away from the windshield and 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 pedestrian collision.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 sink vertically in the event of a shock 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. In embodiments, 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, in 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, in 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 features a vertical step at one of its front ends. This improves access to the compartment defined by the base frame. Typically, the frame is essentially flat. By incorporating this vertical step, the access threshold to the frame-defined compartment is lowered, thus facilitating entry. As mentioned earlier, this compartment generally houses either the engine and vehicle control or maintenance points, or a storage compartment. The "front end of the base" refers to the end of the base that is furthest forward when the assembly is mounted on a vehicle.By "vertical offset" we mean the fact that the frame, whose side edges and rear edge extend relatively in the same plane, has, at its front end, an 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 includes, at its front longitudinal end, a vertical wall positioned opposite the vertical offset of the base frame. It is understood that the hood's vertical wall effectively closes the compartment defined by the frame when the latter includes a vertical offset at its front edge. 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 impact with a pedestrian, particularly to the hip or pelvis of an adult or to the head of a child.

[0022] Advantageously, the base provides 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 term "the base provides support for" means that the component for which the base provides support is attached to the base directly or indirectly, such that the attachment of this component to the rest of the motor vehicle is achieved, 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 attaching the base to the motor vehicle's support structure, it is possible to simultaneously attach one or more other functional components of the motor vehicle to the 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 once 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] Laest 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] This is a view of a portion of the front of the motor vehicle in which the second part of the hood is in the open position.

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

[0030] This is an exploded perspective view of the whole of the. 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 includes a base 3 for mounting on a support structure 4 of the motor vehicle 2. The base 3 is specifically designed to provide support for functional components of the motor vehicle 2. The base 3 includes a frame 5 defining a through opening 6. In the embodiment shown, the frame 5 of the base 3 has a vertical notch 7 at one of the front ends of the base 3 (see). This improves access to the compartment defined by the frame 5 of the base 3. In the embodiments shown, this compartment generally includes either the engine and control or maintenance points of the motor vehicle 2, or a storage compartment. In this case, the motor vehicle 2 is an electric vehicle, and the compartment defined by the frame 5 is a storage compartment, sometimes called a "frunk".Thus, it is understood that the vertical recess 7 lowers the loading sill of the storage compartment it provides access to, thereby facilitating its 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 for 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 is fixed relative to the base 3, and a second part 10 of the hood 8 is 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. According to this 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 an alternative embodiment, an internal reinforcing structure 23 may be used for only one of the parts 9, 10 of the hood 8, or both parts 9, 10 of the hood 8 may each be formed solely of an outer skin 22 and thus lack an internal reinforcing structure 23.

[0034] In this 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 alternative embodiments, 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 overlap, at least partially, the first lateral edge of the 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 the 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 can 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 this 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. 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 helps to reduce the risk of injury in the event of a frontal impact 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 exceeds a predetermined threshold. The fact that the means for articulating 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 means exceeds a predetermined threshold ensures that these means will deform or break during a collision with a pedestrian, so as to absorb at least part of the impact energy and prevent the formation of hard points that could cause serious injury. The means for articulating the 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 body.Thus, by designing the hood's hinges to deform or break, the risk of pedestrian injury, particularly to the head, is reduced, or at the very least, the severity of any potential head injuries is diminished. The deformation or breakage of the hinges allows for greater displacement of the hood of a motor vehicle, particularly in the event of a collision with a pedestrian, regardless of the impact's location on the hood, provided that the acceleration applied to the hinges by the hood's deformation during the impact exceeds a predetermined threshold. This greater displacement of the 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 collision.

[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 this case, the articulation means for the cover 8 include hinges 11, hinge supports 12, 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 this embodiment, each hinge 11 is attached, on the one hand, to the base 3 via the hinge support 12 and, on the other hand, to the second part 10 of the cover 8 in such a way as to allow movement of the second part 10 of the cover 8 between its open and closed positions. In 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 movable second part 10 of the cover 8 influences the longitudinal positioning of the hinges 11.Thus, the shorter the second movable section 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 section 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 sections 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 this case, the supports 12 for the hinge 11 are formed by supports for at least one wing section 17a, 17b, each of which is mounted on the base 3.As illustrated in the figure, assembly 1 comprises two supports of at least one wing part 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 the figure, 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 the fixing of base 3 on the support structure 4 of motor vehicle 2 allows for the correct fixing and positioning of all the functional components carried by base 3 between themselves and in relation to the rest of motor vehicle 2. It is understood in particular that the adjustments of the mounting clearances and the flushness are facilitated.

[0042] The fact that 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. Specifically, the wipers can be secured to the base by means of at least one fusible link designed to deform or break upon impact with a pedestrian. This deformation or breakage helps to reduce the energy transmitted to the pedestrian during the collision and thus reduces 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 intended 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. It can be envisaged that the optical blocks of the optical unit 16 will be fixed to the base 3 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 helps to reduce the energy transmitted to the pedestrian during the collision and thus to reduce the risk of injury to the pedestrian.

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

[0046] According to the present embodiment, several functional components of the motor vehicle 2 are positioned within 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 within the internal volume are mounted on the base 3. As illustrated in the figure, 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 within the volume are chosen from among at least 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 components arranged at least partly 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 components from being 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 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 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 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 above; b) the assembly 1 obtained in step a) is mounted on a support structure 4 of motor vehicle 2.

[0049] It is therefore understood that the process includes an initial pre-assembly phase during which assembly 1 is prepared for attachment to the support structure 4 of the motor vehicle. In particular, in addition to attaching the two-part hood 8 9, 10 to the base 3, it is understood that any functional component of the motor vehicle 2 that is to be 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 supported 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 guiding the placement of the base 3 on the support structure 4 and that the support structure 4 includes additional guidance means to facilitate the placement of the base 3 and the electrical connection of the functional components carried by the base 3 to the rest of the motor vehicle 2.

[0050] The invention is not limited to the embodiment presented in the detailed description, and other embodiments will be obvious to a person skilled in the art. List of references

[0051] 1: Assembly for the front end of a motor vehicle 2: Motor vehicle 3: Base 4: Support structure of the motor vehicle 5: Frame 6: Through opening in the base 7: Vertical step 8: Hood 9: First part of the hood 10: Second part of the hood 11: Hood hinges 12: Hinge support – support for at least one fender section 13: Bumper 14: Airbag module 15: Windshield wiper 16: Optical unit 17a, 17b: Fender 18: Electrical connection means 19: Electrical charging means 20: Housing 21: Vertical wall 22: Outer skin 23: Internal reinforcement structure A: Main longitudinal axis of the hood LT: Total length of the hood LD: Length of the second part of the hood

Claims

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 a motor vehicle (2) 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. 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 main longitudinal axis (A) of the hood (8). 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). 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). 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). 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 partly 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, a windshield wiper motor (15), a radar, a lidar, a camera or an acoustic warning system. Assembly (1) according to any one of the preceding claims, further comprising electrical connection means (18) intended to be connected to complementary electrical connection means carried by a support structure (4) of a motor vehicle (2) so as to electrically connect the assembly (1) to the rest of the motor vehicle (2), the base (3) further comprising guidance means intended to cooperate with complementary guidance means carried by the support structure (4) of 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 being configured so that, after the placement of the base (3) on the support structure (4) has been guided, 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). 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. 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). 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. Method of 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 obtain an assembly (1) for a front of motor vehicle (2) according to any one of claims 1 to 9, b) the assembly (1) obtained in step a) is mounted on a support structure (4) of motor vehicle (2).

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