Arrangement for motor vehicle.

Abstract

Arrangement for a motor vehicle. Arrangement (50) for a motor vehicle (100), comprising: - a fastening piece (1), - a cross member (51) reinforcing a bulkhead (53) of a motor vehicle (100), - at least one first wiring harness (45, 46) for connecting a charging socket (69) of the motor vehicle (100) to a high-voltage battery (61) of the motor vehicle (100), characterized in that the fastening piece (1) is fixed to the reinforcing cross member (51) and includes a first fastening area (115) for at least one wiring harness (45, 46). Figure for the abstract: 4

Description

Title of the invention: Arrangement for motor vehicle.

[0001] The invention relates to an arrangement comprising a mounting bracket for a cable or hose of a motor vehicle. The invention also relates to a motor vehicle comprising such an arrangement.

[0002] Car manufacturers are developing vehicles with reduced overhang compared to the overhangs of previous vehicles.

[0003] In addition, to reduce development costs, internal combustion engine vehicle platforms are reused to produce electric or hybrid vehicles.

[0004] However, integrating new components (such as, for example, a high-voltage battery and a charging port) into a pre-existing vehicle structure presents spatial constraints for these new elements. These constraints relate not only to the available space for housing the new components, but also to the routing of the new pipes and cables required for these components. These constraints are further amplified when the pre-existing vehicle structure has a reduced overhang.

[0005] The object of the invention is to provide a solution for integrating new components into a pre-existing vehicle structure while taking into account the various constraints previously identified. In particular, the invention makes it possible to create a simple and reliable device that allows for the attachment of pipes and cables in a given area of ​​the motor vehicle without modifying the pre-existing vehicle structure.

[0006] To this end, the invention relates to an arrangement for a motor vehicle, comprising - a fixing piece, - a reinforcing crossmember for the apron of a motor vehicle, - at least one initial wiring harness intended to connect a charging port of the motor vehicle to a high-voltage battery of the motor vehicle, the fixing piece being fixed to the reinforcing cross member and including a first fixing area for at least one cable.

[0007] In one embodiment, the arrangement further includes a pipe or a second wiring, the pipe or second wiring being separate from at least one first wiring, and the fastening piece includes at least one second fastening area for the pipe or second wiring.

[0008] The fastening piece may include - a first part comprising the first fixing zone, the first part being directly fixed to the reinforcement cross member of the deck, and - a second part fixed to the first part, the second part comprising the second fixing area for the pipe or the second wiring, in particular the given pipe or wiring being a pipe intended to connect a water heating means of the motor vehicle to a radiator of a passenger compartment of the motor vehicle and / or the pipe or the second wiring being a pipe intended to connect a high-voltage battery cooling circuit to the radiator of the passenger compartment of the motor vehicle.

[0009] The first part may include a first set of fastening means, including a square hole and a stud, and the second part may include a second set of fastening means, including a circular hole and a curved end, collaborating with the first set of fastening means so as to prevent rotational movement of the second part relative to the first part.

[0010] In one embodiment, the arrangement may include: - a first and a second brake fluid pipe intended to connect respectively a front right brake and a front left brake of the motor vehicle to a braking assistance system of the motor vehicle, - a third and a fourth heat transfer fluid pipe intended to connect respectively a water-based heating system of the motor vehicle and a cooling circuit of a high-voltage battery of the motor vehicle to a radiator in the passenger compartment of the motor vehicle, - a first and a second wiring system intended to connect a charging socket of the motor vehicle to the high-voltage battery, - a third wiring harness intended to connect the high-voltage battery to a high-voltage battery management computer. In addition, the fixing piece includes fixing means for each pipe taken from the first, second, third and fourth pipes and for each wiring taken from the first, second and third wirings.

[0011] The invention further relates to an assembly comprising an arrangement according to the invention, the assembly further comprising: - a high-voltage battery, - a high-voltage battery cooling circuit, - a high-voltage battery management computer, - a water-based heating system, - a passenger compartment equipped with a radiator, - a right front brake, a left front brake, and a brake assist system, and - a charging socket. In addition, - The first and second brake fluid hoses in the arrangement connect the front right and front left brakes respectively to the vehicle's braking assistance system, - the third and fourth heat transfer fluid pipes in the arrangement connect the water heating and the high-voltage battery cooling circuit to the passenger compartment radiator, respectively. - The first and second cables connect the charging port to the high-voltage battery, - the third wiring connects the high-voltage battery to the high-voltage battery management computer.

[0012] The invention further relates to a motor vehicle comprising an assembly according to the invention or an arrangement according to the invention.

[0013] The invention also relates to a method for assembling a motor vehicle comprising an assembly according to the invention, comprising - a step of attaching the first part of the assembly's mounting bracket to the assembly's reinforcement crossbar, then - a step of installing the assembly's brake assist system and attaching the first and second brake fluid hoses of the assembly to the first part of the assembly's mounting bracket, then - a step of attaching the second part of the assembly's fixing piece to the first part of the assembly's fixing piece, - a step of fixing the third and fourth pipes of the assembly arrangement onto the second part of the assembly arrangement fixing piece.

[0014] In one embodiment, the method of assembling a motor vehicle further includes an additional step of attaching the first, second and third wirings of the assembly arrangement to the first part of the assembly arrangement attachment piece, the additional step preceding the step of attaching the second part of the assembly arrangement attachment piece, or the additional step taking place after the step of attaching the second part of the assembly arrangement attachment piece.

[0015] These objects, features and advantages of the present invention will be described in detail in the following description of a particular embodiment, given by way of non-limiting example, with reference to the accompanying figures, among which:

[0016] Fig. 1 schematically represents a motor vehicle equipped with an arrangement according to an embodiment of the invention.

[0017] Fig. 2 defines a direct orthonormal frame of reference of a motor vehicle equipped with an arrangement according to the invention.

[0018] Fig. 3 is a view of a reinforcing crossmember of a motor vehicle before mounting an arrangement according to the invention.

[0019] Fig. 4 is a view of a reinforcing crossmember of a motor vehicle after assembly of an arrangement according to the invention.

[0020] Fig. 5 is a detailed view of a reinforcing crossmember of a motor vehicle after assembly of an arrangement according to the invention.

[0021] Fig. 6 is a first perspective view of a first part of a fixing support for an arrangement according to an embodiment of the invention.

[0022] Fig. 7 is a second perspective view of a first part of a fixing support for an arrangement according to an embodiment of the invention.

[0023] Fig. 8 is a perspective view of a second part of a fixing support for an arrangement according to an embodiment of the invention.

[0024] The [Fig.9] is a flowchart of a method for assembling an arrangement according to the invention.

[0025] The [Fig. 10] is a first illustration of a step in a method of assembling an arrangement according to the invention.

[0026] The [Fig. 11] is a second illustration of a step in a method of assembling an arrangement according to the invention.

[0027] The [Fig. 12] is a third illustration of a step in a method of assembling an arrangement according to the invention.

[0028] The [Fig. 13] is a fourth illustration of a step in a method of assembling an arrangement according to the invention.

[0029] An embodiment of a motor vehicle 100 according to the invention is described below with reference to [Fig. 1]. The motor vehicle 100 is a motor vehicle of any type, in particular a passenger vehicle or a commercial vehicle.

[0030] For the purposes of this description, and with reference to [Fig. 2], a direct orthonormal coordinate system R0, with axes X, Y, Z, commonly used in automotive design, is used, in which - the X-axis designates the front-to-rear longitudinal direction of the vehicle, oriented towards the rear, - the Y-axis designates the transverse direction and is oriented towards the right of the vehicle, and - the Z axis designates the vertical direction, and is oriented upwards.

[0031] The motor vehicle 100 includes an electric powertrain. In one embodiment, the motor vehicle 100 is a fully electric vehicle. Alternatively, the motor vehicle 100 could be a hybrid vehicle.

[0032] In one embodiment, the structure of the platform used to build the The motor vehicle 100 is largely based on a thermal vehicle structure, referred to hereafter as CMFB-ICE. In particular, the side members, the bulkhead, and the bulkhead reinforcement crossmember of the motor vehicle 100 according to the invention are identical to the side members, bulkhead, and bulkhead reinforcement crossmember used in the CMFB-ICE platform.

[0033] In the embodiment presented later in this document, the structure of the motor vehicle 100 is not modified. In other words, the structure of the motor vehicle is not modified by the installation of new pipes or cables and their attachment in connection with the installation of an electric drivetrain.

[0034] In contrast, a so-called "tunnel zone," commonly present and used on internal combustion engine vehicles for the installation of the exhaust and pollution control devices (which are not found on all-electric vehicles), has been modified. Advantageously, the dimensions of the tunnel zone have been reduced to save space. The modified tunnel zone accommodates a high-voltage water heater 64 that transfers heat to water flowing through a radiator 65 in the passenger compartment of the motor vehicle 100. In other words, the presence of the water heater 64 in the tunnel zone is necessary to provide heating in the passenger compartment. Indeed, unlike a vehicle designed based on an electric vehicle architecture, the passenger compartment of a vehicle according to the invention does not include a heating element to heat the passenger compartment.The presence of a water heater 64 also requires that the position of the tunnel area be moved back as far as possible in the vehicle, in order to reduce the risks caused by an impact that could damage the water heater 64.

[0035] Connecting the passenger compartment radiator 65 to the water heater 64 located in the engine compartment requires installing a water pipe passage between the engine compartment area and the tunnel 2.

[0036] Furthermore, in the described embodiment, the charging socket of the motor vehicle 100 is located on a front wing of the vehicle. In addition, the high-voltage battery 61 is located under the body of the vehicle and various interfaces from the high-voltage battery 61 to other components of the vehicle pass through the tunnel 2: water pipes 43, 44 respectively connecting the water heater 64 and the cooling circuit of the battery 62 to the radiator 65 of the passenger compartment, a 12-volt cable connecting the high-voltage battery 61 of the motor vehicle 100 to a battery management computer 63, and connection cables from the battery 61 to a charging socket 69 running from the charging socket 69 through the engine compartment and then down in the tunnel area to the high-voltage battery 61.

[0037] Furthermore, a braking assistance system 68 is also located in the engine compartment. Two rigid pipes 41, 42 allow the brakes to be actuated The rear brake lines pass through the engine compartment and then through the tunnel area to reach the rear wheels of the vehicle. The brake lines for the front wheels also run through the engine compartment in this same area.

[0038] In order not to create new interfaces on the elements taken from the CMFB-ICE platform, in particular on the longitudinal members 52, the apron 53 and the reinforcement cross member of the front apron, the vehicle includes an arrangement 50 comprising a fixing piece 1, the fixing piece 1 allowing the cables and pipes of a set of equipment 60 of the motor vehicle 100 to be fixed.

[0039] The invention relates to an arrangement 50, comprising: - a fixing piece 1, - a cross member 51 reinforcing a deck 53 of a motor vehicle 100, - at least one first wiring 45, 46 intended to connect a charging socket 69 of the motor vehicle 100 to a high-voltage battery 61 of the motor vehicle 100, the fixing piece 1 being fixed to the apron crossmember 51 and comprising a first fixing area 114 for at least one wiring 45, 46.

[0040] In one embodiment, the arrangement 50 further comprises a pipe or a second wiring, the given pipe or second wiring 41, 42, 43, 44 being distinct from the at least one first wiring 45, 46, and the fixing piece 1 includes at least a second fixing area for the pipe or second wiring 41, 42, 43, 44.

[0041] The term "fixing area" is used to designate a portion of the surface of the fastener 1 that includes a feature contributing to the fixing of a pipe or cable. The feature may simply be a surface portion serving as a support, and / or at least one hole made in the surface portion, and / or a threaded shaft and / or a centering pin fixed to the surface portion. Other embodiments of the fastener, particularly of the feature, are also possible.

[0042] In one embodiment, the motor vehicle 100 may advantageously include an assembly 60 comprising the following equipment: - a 61 high-voltage battery, - a battery cooling circuit 62, - a high-voltage battery management computer 63, - a water-based heating system 64, - a passenger compartment equipped with a 65 radiator, - a right front brake 66, a left front brake 67, and a brake assist system 68.

[0043] The assembly 60 further comprises an arrangement 50 including the following cables and pipes: - a first and a second brake fluid pipe 41, 42 connecting respectively a right front brake 66 and a left front brake 67 of the motor vehicle 100 to a braking assistance system 68 of the motor vehicle 100, - a third and a fourth heat transfer fluid pipe 43, 44 respectively connecting a water heater 64 of the motor vehicle 100 and a cooling circuit 62 of a high-voltage battery 61 of the motor vehicle 100 to a radiator 65 of a passenger compartment of the motor vehicle 100, - a first and a second wiring 45, 46 connecting a charging socket 69 of the motor vehicle 100 to the high-voltage battery 61, - a third wiring 47 connecting the high voltage battery 61 to a high voltage battery management computer 63 61. Furthermore, in this embodiment, the fastening piece 1 includes fastening means 1111, 1112, 1121, 1122, 1123, 1131, 1132, 1133, 1141, 1142, 1151, 1211, 1212, 1221, 1222 for each pipe taken from the first, second, third and fourth pipes and for each cable taken from the first, second and third cables.

[0044] The third wiring 47 allows the battery management computer 63 to retrieve information relating to the battery, for example the charge level of the battery 61.

[0045] In the remainder of this document, the term "fastening piece" refers to a part intended to arrange at least one hose or cable in a given mounting area of ​​a motor vehicle. Advantageously, a fastening piece simplifies the mounting of at least one hose or cable in the given area.

[0046] The "fastening part 1" or "part 1" is a part designed to - on the one hand, to be fixed to the reinforcing crossmember 51 of the front shield 53 of the motor vehicle 100, and - on the other hand, provide fixing areas 111, 112, 113, 114, 115, 121, 122 for pipes and cables, in particular for the first, second, third and fourth pipes, as well as the first, second and third cables.

[0047] In a preferred embodiment, the fastening part 1 comprises: - a first part 11 comprising a first fixing zone 114, the first part 11 being directly fixed to the cross member 51 reinforcing the deck 53, and - a second part 12 fixed to the cross member 51 of reinforcement of the apron 53 by means of the first part 11, the second part comprising a second fixing area 122 for a given pipe or wiring, in particular the given pipe or wiring being a passenger compartment heating pipe and / or a battery cooling pipe.

[0048] In the embodiment described in Figures 6 to 8, the fastening piece 1 comprises - a first part 11, also called "main part 11" comprising six substantially flat surfaces SI 11, SI 12, SI 13, SI 14, SI 15, SI 16 situated respectively in six planes PI 11, PI 12, PI 13, PI 14, PI 15 and PI 16, and - a second part 12, also called "additional part 12", comprising mainly two substantially flat surfaces S121, S122 located respectively in two planes P121 and P122. In one embodiment, the planes P121 and P122 form an obtuse angle between them.

[0049] In one embodiment, the fastener 1 is made of stamped sheet metal. In one embodiment, at least one surface SI 15 of the fastener includes a stamping, i.e. a groove, to increase its rigidity.

[0050] The fastening member 1 is described with reference to the coordinate system (X, Y, Z) in a configuration where it is mounted on the crossmember 51 of the motor vehicle 100. In this configuration, a surface SI 11 of the main part 11 of the fastening member 1 is in contact with an upper face 511 of the crossmember 51, the upper face 511 of the crossmember 51 being itself substantially parallel to a plane (X, Y). In particular, the surface S111 rests on the upper face 511 of the crossmember 51. The presence of holes 1111, 1112 passing through the surface SI 11 allows the main part 11 of the fastening member 1 to be fixed to the crossmember 51, notably by bolts as illustrated in [Fig. 5]. The surface SI 11 thus provides a fixing area 110 of the member 1 to the crossmember 51.

[0051] The attachment of surface S111 thus determines the position of the other surfaces S112 to SI 16 of the main part 11 of the fastening part 1 in the vehicle 100. Furthermore, as will be described later in the document, surface S121 of the additional part 12 is attached to surface SI 14 of the main part 11. The attachment of surface SI 11 thus determines the position of surfaces S121 and S122 of the additional part 12 of the fastening part 1.

[0052] In the described embodiment, the surfaces SI 12, SI 13, SI 14, SI 16, S121 and S122 have the function of providing attachment areas, for at least one pipe or at least one wiring of the motor vehicle 100, to the cross member 51 via the attachment piece 1.

[0053] First, the pipe or cable fixing areas provided by the surfaces SI 12, SI 13, SI 14, SI 16 of the main part 11 of the fixing piece 1 are described.

[0054] The surface SI 12 is defined along a plane PI 12 parallel to a first surface 531 of the shield 53, the first surface 531 being located at the edge of a recess in the shield 53. The surface SI 12 is intended to be placed in support on the first surface 531 of the shield 53. On the surface SI 12 is a first fixing zone 112 for pipe or cable, the fixing zone 112 comprising a fixing means, in particular an oblong hole 1121.

[0055] The planes PI 13 and PI 14, containing the surfaces SI 13 and SI 14, are substantially parallel to a plane (Y, Z).

[0056] The surface SI 13, defined according to the plane PI 13, is a tab connecting the surface SI 12 to the surface SI 11. The surface SI 13 runs along the surface of the shield 53. The surface SI 13 includes a second fixing area 119 for a hose or cable, containing a threaded rod 1121 intended to fix the first and second brake fluid hoses 41, 42, for example, by means of a fixing clip 1122. The fixing clip 1122 is more particularly intended to equip a vehicle whose steering column is on the left.

[0057] In one embodiment, the second fixing area 119 for hose or cable further includes a round hole 1123 for fixing one or more brake fluid hoses of a vehicle whose steering column is located on the right.

[0058] Similarly, the surface SI 14, defined according to plane PI 14, is a large surface connecting the surface SI 11 to the surface SI 15. The surface SI 14 runs along a vertical face of the shield reinforcement cross member 51. The surface SI 14 includes a third attachment area 113 for a hose or cable, containing an oblong hole 1131, a square hole 1132, and a stud 1133. The oblong hole 1131 is intended to cooperate with a male attachment means for securing the third wiring 47 connecting the high-voltage battery 61 to the battery management computer 63. The square hole 1132 and the stud 1133 are intended to cooperate with structures of the additional part 12 for its attachment to the main part 11, as will be described later in this document.

[0059] Surface SI 15 extends the main part 11 towards tunnel 2, which is intended to house the water heating system 64. Surface SI 15 includes a groove, also called a "stamped groove," for reinforcing the main part 11. Surface SI 15 does not include a fixing zone. However, surface SI 15 connects surface SI 16 to surface SI 14. The shape of surface SI 15, its dimensions, and the reinforcement of its structure, particularly by means of a groove, allow surface SI 16 to be positioned within tunnel 2.

[0060] The surface SI 15 is thus extended by the surface SI 16 which extends inside the tunnel 2. The surface SI 16 is divided into two fixing zones for a pipe or cable, - a fourth fixing zone 114, comprising a stud 1141 and a screw 1142 suitable for working with a fixing means for the first and second cables 45, 46 connecting the charging socket to the high-voltage battery 61, and - a fifth fixing zone 115 comprising an oblong hole 1151 also suitable for use with a fixing means for another cable, for example a fixing means for a smaller cross-section high-voltage cable. In the proposed view, the oblong hole 1151 is not used.

[0061] The fixing zones provided by the surfaces S121 and S122 of the are then described. additional part 12 of the fixing part 1.

[0062] The surface S121 includes a sixth attachment zone 121, which collaborates with the third attachment zone 113 of the main part 11, in particular - the curved end 1211 of the additional part 12 collaborates with the square hole 1132 of the main part, and - the round hole 1212 of the additional part 1212 collaborates with the nipple 1133 of the main part 11.

[0063] The surface S122 includes a seventh fixing zone 122 comprising a round hole 1221 and a substantially oblong hole 1222 intended to collaborate with a male fixing means for fixing water pipes 43, 44 connecting respectively the water heater 64 and the battery cooling circuit 62 to the radiator 65 of the passenger compartment.

[0064] The invention further relates to a method for assembling a motor vehicle comprising - a step El of fixing the first part 11 of the fixing piece 1 onto the reinforcing cross member 51, then - a step E2 of installing the brake assist system and attaching the first and second brake fluid hoses to the first part 11 of the mounting piece 1, then - a step E4 of fixing the second part 12 of the fixing piece 1 onto the first part 11 of the fixing piece 1, - a step E5 of fixing the third and fourth pipes 43, 44 on the second part 12 of the fixing piece.

[0065] The assembly process is described below with reference to Figs 9 to 13.

[0066] In a step El of fixing the first part 11 of the fixing piece 1 onto the In the reinforcing cross member 51, the surface S111 of the main part 11 of the fastener 1 is in contact with the upper face 511 of the cross member 51, the upper face 511 of the cross member 51 being itself substantially parallel to a plane (X, Y). In particular, the surface S111 rests on the upper face 511 of the cross member 51. Advantageously, bolts passing through the cross member and holes 1111, 1112 passing through the surface S11 allow the main part 11 of the fastener 1 to be fixed to the cross member 51.

[0067] Then, in step E2 of the brake assist system installation, a preparation table is advantageously used prior to assembly to position the rigid brake fluid pipes according to a controlled geometry. Indeed, the preparation table allows for angular positioning of the pipes and tightening with greater ease than if they were carried out in the vehicle. Once the rigid pipes are positioned around the brake assist system, the latter is fixed to the vehicle's bulkhead 53. To prevent excessive variation in the positioning of the rigid brake lines and thus control their geometry, it is necessary to install a brake line bracket at least every 500 millimeters. For this purpose, the mounting area 112 of the main section provides a mounting surface for each of the brake fluid lines 41, 42 relating to the left and right front brakes.

[0068] As a note, the brake assist system is installed in the vehicle by a pure longitudinal translational movement, which means that the additional part 12 of the fixing piece 1 must imperatively be fixed to the main part 11 of the fixing piece 1 after the brake assist system has been fixed to the apron.

[0069] The step of attaching the second part 12 of the mounting piece 1 to the first part 11 of the mounting piece 1 can be carried out directly after step E2 of installing the brake assist system, as shown in particular in [Fig. 10]. Alternatively, it can be preceded by a step E3 of attaching the first, second and third cables 45, 46, 47 to the first part 11 of the mounting piece 1.

[0070] In step E3, illustrated by [Fig. 12], the first and second wirings 45, 46, which correspond to the charging socket wirings, are fixed to the fixing areas 114 and 115 of the first part. Furthermore, the third wiring 47, corresponding to the wiring connecting the battery to the battery management computer 63, is fixed to the first area 111 of the main part 11.

[0071] As long as the vehicle is positioned at the required height for assembling the engine compartment components, the following points along the wiring routes 45, 46, 47 are not accessible for screwing by an operator in the assembly plant. This means that the wiring attachment points 45, 46, 47 on the mounting bracket 1 are the only attachment points for these wirings during several stages of vehicle assembly.

[0072] It is therefore necessary that the mounting piece 1, in particular the mounting areas 111, 114 and 115, have resistance characteristics enabling it to support the weight of long sections of wiring. In particular, the mounting area 111 must be able to support the weight of a length of wiring extending from the mounting area 111 to the battery. Furthermore, the mounting areas 114 and 115 must together be able to support the weight of a length of wiring 45, 46 extending from the mounting areas 114, 115 to the battery.

[0073] Then, in a step E4, preceding or following step E3, the additional part 12 of the fastener is attached to the main part of the fastener. For this purpose, the round hole 1212 of the additional part 12 cooperates with the stud 1133 of the main part 11, to guide the additional part, in particular according to a degree of freedom around the axis of the nipple 1133. And - the curved end 1211 of the additional part 12 collaborates with the square hole 1132 of the main part, to prevent the rotational movement of the additional part 12 around the nipple 1133 of the main part 11.

[0074] Then in a step E5 the third and fourth pipes 43, 44 are fixed to the second part 12 of the fixing piece 1. For this purpose, the fixing area 122 includes a round hole 1221 and a substantially oblong hole 1222 intended to collaborate with a male fixing means to fix the third and fourth pipes 43, 44.

[0075] Finally, the arrangement according to the invention, and in particular the fastening piece 1, makes it possible to integrate new components into an existing vehicle structure. In particular, the arrangement according to the invention makes it possible to develop an electric vehicle based on an existing internal combustion engine vehicle structure, without it being necessary to modify either the existing structure or the tooling required for vehicle assembly.

[0076] Furthermore, by positioning the mounting bracket on the apron reinforcement crossmember, it is ensured that the arrangement is sufficiently robust to support the weight of the pipes and cables supported by the mounting bracket. This point is particularly important during vehicle assembly, when the mounting bracket must temporarily support a significant length of wiring.

Claims

Claims

1. Arrangement (50) for a motor vehicle (100), comprising - a fixing part (1), - a cross member (51) for reinforcing an apron (53) of a vehicle to the motor vehicle (100), - at least one first wiring (45, 46) intended to connect a charging socket (69) of the motor vehicle (100) to a high-voltage battery (61) of the motor vehicle (100), characterized in that the fixing part (1) is fixed to the reinforcing cross member (51) and comprises a first fixing zone (114) for the at least one wiring (45, 46).

2. Arrangement (50) according to the preceding claim, characterized in that it further comprises a pipe or a second wiring, the pipe or second wiring (41, 42, 43, 44) being distinct from the at least one first wiring, and in that the fixing part (1) comprises at least one second fixing zone for the pipe or second wiring (41, 42, 43, 44).

3. Arrangement (50) according to the preceding claim, characterized in that the fixing part (1) comprises - a first part (11) comprising the first fixing zone (114), the first part (11) being directly fixed to the cross member (51) reinforcing the apron (53), and - a second part (12) fixed to the first part (11), the second part (12) comprising the second fixing zone (122) for the pipe or the second wiring (43, 44), in particular the given pipe or wiring being a pipe (43) intended to connect a water heating means (64) of the motor vehicle (100) to a radiator (65) of a passenger compartment of the motor vehicle (100) and / or the pipe or the second wiring being a pipe (44) intended to connect a cooling circuit of the high voltage battery (61) to the radiator (65) of the passenger compartment of the motor vehicle (100).

4. Arrangement (50) according to the preceding claim, characterized in that the first part (11) comprises a first set of means fixing means, in particular a square hole (1132) and a stud (1133), and in that the second part (12) comprises a second set of fixing means, in particular a circular hole (1212) and a curved end (1211), collaborating with the first set of fixing means so as to prevent rotational movement of the second part (12) relative to the first part (11).

5. Arrangement (50) according to one of the preceding claims, characterized in that it comprises: - a first and a second brake fluid pipe (41, 42) intended to connect respectively a right front brake (66) and a left front brake (67) of the motor vehicle (100) to a braking assistance system (68) of the motor vehicle (100), - a third and a fourth heat transfer fluid pipe (43, 44) intended to connect respectively a water heating means (64) of the motor vehicle (100) and a cooling circuit (62) of a high voltage battery (61) of the motor vehicle (100) to a radiator (65) of a passenger compartment of the motor vehicle (100), - a first and a second wiring (45, 46) intended to connect a charging socket (69) of the motor vehicle (100) to the high voltage battery (61),- a third wiring (47) intended to connect the high voltage battery (61) to a computer (63) for managing the high voltage battery (61), and in that the fixing part (1) comprises fixing means (1111, 1112, 1121, 1122, 1123, 1131, 1132, 1133, 1141, 1142, 1151, 1211, 1212, 1221, 1222) for each pipe taken from among the first, second, third and fourth pipes and for each wiring taken from among the first, second and third wirings.,

6. Assembly (60) comprising an arrangement (50) according to the preceding claim, the assembly further comprising: - a high voltage battery (61), - a circuit (62) for cooling the high voltage battery (61), - a computer (63) for managing the high voltage battery (61), - a water heater (64), - a passenger compartment equipped with a radiator (65), - a right front brake (66), a left front brake (67), and a braking assistance system (68), and - a charging socket (69), characterized in that. - the first and second brake fluid pipes (41, 42) of the arrangement (50) respectively connect the right front brake (66) and the left front brake (67) to the brake assist system (68) of the motor vehicle (100), - the third and fourth heat transfer fluid pipes (43, 44) of the arrangement (50) respectively connect the water heater (64) and the cooling circuit (62) of the high-voltage battery (61) to the passenger compartment radiator (65), - the first and second wiring (45, 46) connect the charging socket (69) to the high-voltage battery (61), - the third wiring (47) connects the high-voltage battery (61) to the computer (63) for managing the high-voltage battery (61).

7. Motor vehicle comprising an assembly (60) according to the preceding claim or an arrangement (50) according to one of claims 1 to 5.

8. A method of mounting a motor vehicle comprising an assembly (60) according to claim 6, characterized in that it comprises - a step (El) of fixing the first part (11) of the fixing part (1) of the arrangement (50) of the assembly (60) on the reinforcing crossmember (51) of the arrangement (50) of the assembly (60), then - a step (E2) of installing the braking assistance system of the assembly (60) and fixing the first and second brake fluid pipes (41, 42) of the arrangement (50) of the assembly (60) on the first part (11) of the fixing part (1) of the arrangement (50) of the assembly (60), then - a step (E4) of fixing the second part (12) of the fixing part (1) of the arrangement (50) of the assembly (60) on the first part (11) of the fixing part (1) of the arrangement (50) of the assembly (60), - a step (E5) of fixing the third and fourth pipes (43,44) of the arrangement (50) of the assembly (60) on the second part (12) of, the fixing part of the arrangement (50) of the assembly (60).

9. Method for assembling a motor vehicle according to the preceding claim, characterized in that it further comprises an additional step (E3) of fixing the first, second and third wirings (45, 46, 47) of the arrangement (50) of the assembly (60) on the first part (11) of the fixing part (1) of the arrangement (50) of the assembly (60), the additional step (E3) preceding the step of fixing the second part (12) of the fixing part (1) of the arrangement (50) of the assembly (60), or the additional step (E3) taking place after the step of fixing the second part (12) of the fixing part (1) of the arrangement (50) of the assembly (60).

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