Arrangement comprising vibration filtering elements between a body and a vehicle powertrain.

Abstract

Arrangement comprising vibration filtering elements between a body and a vehicle powertrain. The invention relates to an arrangement (6) for a vehicle comprising a body (2) and a powertrain (5), the arrangement (6) comprising a left side member (4L) and a right side member (4R), a left side support (20) attached to the powertrain (5) and the left side member (4L) and a right side support (40) attached to the powertrain (5) and the right side member (4R), a beam (10) extending transversely or substantially transversely, the beam (10) being attached to the left side support (20) and the right side support (40), a rear support attached to the powertrain (5) and the body (2), the rear support comprising a first vibration filtering element and a second vibration filtering element, at least one element (8) of such a vehicle being arranged on the beam (10) to act as a swing mass.Abstract figure: Fig. 2.

Description

Title of the invention: Arrangement comprising vibration filtration elements between a body and a vehicle powertrain. Technical field of the invention

[0001] The invention relates to an arrangement for a vehicle comprising a body, a powertrain and filtration elements arranged between the body and the powertrain. The invention also relates to a vehicle comprising such an arrangement. State of the prior art

[0002] A vehicle, in particular a motor vehicle, generally comprises a body and a powertrain. A filtration means is generally provided between the body and the powertrain so as to limit the transmitted vibrations. The filtration means makes it possible in particular to improve comfort in terms of acoustics within the vehicle.

[0003] In the case of a powertrain comprising an electric motor, the noise and / or vibration emissions are low on the frequency bands usually viewed. However, such emissions remain perceptible to the occupants of such a vehicle, in particular due to their frequencies and the low level of background noise.

[0004] However, the low level of noise pollution is one of the advantages of an electric vehicle. Thus, it is necessary to prevent the noise and / or vibration emissions from such an electric motor from harming the acoustic comfort of the occupants of such an electric vehicle. Presentation of the invention

[0005] The object of the invention is to provide an arrangement which overcomes the above drawbacks. In particular, the invention proposes an arrangement which makes it possible to fix a powertrain to a body in a simple, reliable and particularly economical manner. Summary of the invention

[0006] To achieve this objective, the invention relates to an arrangement for a vehicle, in particular for a motor vehicle, comprising a body and a powertrain, the arrangement comprising: - a left side member and a right side member, in particular a left front side member and a right front side member, - a left side support fixed to the power unit and to the left side member, the left side support comprising a first vibration filtering element and a second vibration filtering element, and a right side support attached to the powertrain and the right side member, the right side support comprising a first vibration filtering element and a second vibration filtering element, - a beam extending transversely or substantially transversely, the beam being attached to the left side support and to the right side support, - a rear support attached to the powertrain and the body, the rear support comprising a first vibration filtering element and a second vibration filtering element, - at least one element of such a vehicle being arranged on the beam to act as a swinging mass.

[0007] The arrangement may comprise two left fixing means and two right fixing means, in particular screws, the beam can be fixed on the left side support by the two left fixing means and on the right side support by the two right fixing means, the fixing means possibly extending in the vertical direction, in particular from top to bottom.

[0008] The first and second filter elements of the left side support can be held relative to each other by the two left fixing means, and the first and second filter elements of the right side support can be held relative to each other by the two right fixing means.

[0009] The two left fixing means can be arranged at a first end of the beam, and the two right fixing means may be arranged at a second end of the beam.

[0010] The rear support may be a connecting rod comprising a first axis and a second axis, in particular a first axis and a second axis parallel to each other, the connecting rod being able to comprise a first vibration filtering pad at its first axis and a second vibration filtering pad at its second axis, in particular the rear support may be arranged at the bottom of the powertrain and / or may extend substantially in the longitudinal direction.

[0011] The first axis and / or the second axis of the connecting rod may extend transversely.

[0012] The element(s) arranged on the beam to act as a swinging mass may be an electric charger and / or an air conditioning pump and / or an air conditioning compressor and / or a battery.

[0013] The beam may be made of aluminum alloy, in particular obtained by extrusion and / or by folding and / or by casting, or the beam can be made of steel, in particular obtained by cutting and stamping, or the beam may be made of plastic material and / or composite material, possibly including ballast.

[0014] The mass of the beam may be greater than or equal to 1 kg.

[0015] The element(s) arranged on the beam to act as a swinging mass may have a total mass greater than or equal to 5 kg.

[0016] The beam can be positioned, in the vertical direction, above the power unit.

[0017] The invention also relates to a vehicle, in particular a motor vehicle, comprising an arrangement as defined above. Presentation of figures

[0018] These objects, characteristics and advantages of the present invention will be explained in detail in the following description of an embodiment given without limitation in relation to the attached figures among which:

[0019] [Fig.l] is a schematic view of a motor vehicle according to one embodiment of the invention.

[0020] [Fig.2] is a sectional view along a vertical and transverse plane of an arrangement according to an embodiment of the invention.

[0021] [Fig. 3] is a partial sectional view along a vertical and longitudinal plane of the arrangement according to the embodiment of the invention.

[0022] [Fig.4] is a sectional view along a vertical and longitudinal plane of the arrangement according to the embodiment of the invention.

[0023] [Fig.5] is a partial perspective view of the arrangement according to the embodiment of the invention.

[0024] [Fig. 6] is a graph illustrating the differences in filtration between engine mounts in a body each comprising a single filtration element and mounts each comprising two filtration elements. Detailed description

[0025] The direction in which a vehicle, in particular a motor vehicle, moves in a straight line is defined as the longitudinal direction X. By convention, the direction perpendicular to the longitudinal direction, located in a plane parallel to the ground, is called the transverse direction Y. The third direction, perpendicular to the other two, is called the vertical direction Z. Thus, a direct XYZ reference frame is used in which X is the longitudinal direction in the front-rear direction of the vehicle, therefore directed towards the rear, Y is the transverse direction directed towards the right and Z is the vertical direction directed upwards. The forward direction corresponds to the direction in which the vehicle usually moves in the longitudinal direction and is opposite to the rear direction.

[0026] As illustrated in [Fig.l], a vehicle 1, for example a motor vehicle, comprises a body 2. The vehicle 1 comprises a powertrain 5. Preferably, the powertrain 5 comprises at least one electric motor 3 for the propulsion and / or traction of the vehicle 1. The powertrain may be arranged at the front, and / or at the rear of the vehicle, and / or in a central position. The powertrain 5 may optionally also comprise a heat engine for the propulsion and / or traction of the vehicle 1 and / or for producing electrical energy. The vehicle 1 preferably comprises a battery 9 for storing electrical energy. The vehicle 1 further comprises an arrangement 6 comprising in particular the body 2 and the powertrain 5.

[0027] As illustrated in [Fig.2], the arrangement 6 or the body 2 comprises a left side member 4L. The arrangement 6 or the body 2 further comprises a right side member 4R. Advantageously, the left side member 4L is a left side member arranged at the front of the vehicle and the right side member 4R is a right side member arranged at the front of the vehicle.

[0028] The arrangement 6 further comprises a beam or crossmember 10 extending transversely, or substantially transversely. For example, the beam 10 extends between the left side member 4L and the right side member 4R. Preferably, the beam 10 is positioned, in the vertical direction, above the powertrain 5.

[0029] As illustrated in [Fig.2], the arrangement 6 further comprises a left lateral support 20 attached to the power unit 5 and the left spar 4L. The arrangement 6 further comprises a right lateral support 40 attached to the power unit 5 and the right spar 4R.

[0030] Preferably, as illustrated in Figures 2 and 5, a first interface, a base, an intermediate piece, a support 61 is arranged between the powertrain 5 and the left lateral support 20. A first interface, a base, an intermediate piece, a support 81 is arranged between the powertrain 5 and the right lateral support 40. A second interface, a base, an intermediate piece, a support on a spar 62 is arranged between the left lateral support 20 and the left spar 4L. A second interface, a base, an intermediate piece, a support on a spar 82 is arranged between the right lateral support 40 and the right spar 4R. Preferably, the intermediate pieces or spacers 61, 62, 81, 82 are steel or aluminum alloy parts from a casting and / or machined. The parts 62, 82 are fixed relative to the side members for example by screw-nut type fixing means, preferably screws 35 illustrated in [Fig.5].Such screws 35 cooperate with threads provided in each side member, or advantageously, with nuts attached to the side members (the side members are not shown in [Fig. 5]). The parts 61, 81 are fixed relative to the power unit 5 for example by screw-nut type fixing means, preferably screws 36. illustrated in [Fig.5]. Such screws 36 cooperate in threads provided in the power unit 5, and / or in an electric motor 3, or in added nuts (the power unit is illustrated schematically in [Fig.5])•

[0031] More specifically, as illustrated in [Fig. 3], each lateral support 20, 40 of the arrangement 6 comprises a first vibration filtration element 18. Each lateral support 20, 40 further comprises a second vibration filtration element 28. These first and second filtration elements may have different filtration characteristics.

[0032] Each lateral support 20, 40 comprises a body 16. The body 16 comprises a bore 17. The body 16 receives the first filtering element, preferably a cylindrical elastic element 18, for example comprising rubber or a material having similar properties, within the bore 17. Preferably, the elastic element 18 comprises a tubular internal part comprising an axial orifice intended to receive an axis 19, for example a threaded screw rod, preferably an unthreaded part of a screw rod or a threaded rod or a stud. Where appropriate, the screw 19 is screwed into a thread provided in the corresponding support 61, 81. The cooperation between a screw 19, a lateral support 20, 40 and the corresponding first interface 61, 81 ensures the positioning and holding in position of each lateral support relative to the first interface.Each support 61, 81 being fixed on one side of the powertrain, each lateral support 20, 40 is therefore fixed relative to the powertrain 5, and where appropriate to the electric motor 3.

[0033] Preferably, as illustrated in Figures 3 and 5, each lateral support 20, 40 is fixed to each spar support 62, 82 via the second filtration element 28. For this, advantageously, each spar support 62, 82 comprises two bores 27. In other words, each spar support 62, 82 receives the second filtration element 28, namely two elastic elements, for example each comprising rubber or a material having similar properties, within each bore 27. Preferably, each elastic element 28, advantageously cylindrical, comprises an internal tubular part 29 intended to receive an axis, for example a threaded rod of a fixing means 30. The orifices of each internal tubular part 29 house an unthreaded part of a screw rod 30 or a threaded rod or a stud.

[0034] Preferably, the elastic elements 18, 28 are cylindrical parts marketed under the trademark “SILENTBLOC”. Such a part comprises an external tubular part intended to be housed in a bore, an internal tubular part, and an elastic cylindrical part extending between the internal and external tubular parts. A shaft or axle, generally a screw, in particular an unthreaded part of a screw rod, is inserted into the inner tubular part. Preferably, the inner and outer tubular parts are metallic, for example steel.

[0035] As illustrated in [Fig. 3], two fixing means 30 make it possible to fix the beam 10 on each lateral support, preferably on the top of each lateral support. Thus, preferably, four screws 30 are used to ensure the fixing of the beam on the two lateral supports 20, 40.

[0036] More precisely, the screws 30 are screwed into threads 14 provided in the body 16. Thus, two screws 30 make it possible to fix, assemble, one end of the beam 10 on a lateral support. Indeed, the two elastic elements 28 constituting the second filtration element are sandwiched between the end of the beam and the body 16 of a lateral support 20, 40 by the two screws 30. The longitudinal supports 62, 82 then extend partially between the crosspiece 10 and the body 16 of the lateral supports 20, 40. Given the interposition of the damping elements 28, the longitudinal supports 62, 82 do not receive the vibrations received or emitted by the crosspiece 10. On the other hand, the crosspiece 10 receives the vibrations from the body 16 of each lateral support, the internal tubular parts 29 and the screws 30 being particularly rigid and assembled together.Advantageously, the two axes A29 of the tubular parts 29 of the elastic elements 28 are parallel, or substantially parallel, and are perpendicular, or substantially perpendicular, to the axis A19 of the internal tubular part 19 of the elastic element 18. For example, the axes A29 extend vertically, or substantially vertically, and the axis A19 extends transversely, or substantially transversely.

[0037] In other words, a first level of filtration is provided by a first filtration pad 18 on each side, between the powertrain 5, more precisely between each support 61, 81 and the adjacent lateral support 20, 40. A second level of filtration is provided by two filtration pads 28 per side, namely between the body 16 of each lateral support 20, 40 and the corresponding side member support 62, 82. The side member supports 62, 82 being fixed respectively on the side members 4L, 4R and the supports 61, 81 being fixed on the engine unit 5, ultimately, two levels of filtration are arranged between the engine unit 5 and the body 2.

[0038] Furthermore, via this assembly, the first and second filtration elements 18, 28 are held relative to each other, on each side, by only two fixing means 30. The two right fixing means 30 are arranged at one end 12 of the beam 10 and the two left fixing means 30 are arranged at the other end 13 of the beam 10 (see [Fig.2]). These four screws 30 also ensure, at least in large part or even entirely, the absorption of the weight of the powertrain 5 between the latter and the body.

[0039] Thus, the beam 10 extends transversely while being fixed to the left lateral support 20 and to the right lateral support 40 by four screws 30 in total. Indeed, as seen above Previously, the arrangement 6 comprises two left fixing means and two right fixing means, preferably of the screw type 30. The screws 30 therefore preferably extend vertically within the orifices 29 provided in the elastic elements 28 acting as a second fixing filtration element. More preferably, the screws are assembled from the top to the bottom, in particular for ergonomic purposes.

[0040] As illustrated in Figures 4 and 5, the arrangement 6 further comprises a rear torque recovery support 50. The rear support 50 is fixed on the one hand to the powertrain 5 and on the other hand to the body 2. The rear support 50 comprises a first vibration filtration element 51 and a second vibration filtration element 52. These first and second filtration elements may have different filtration characteristics. Preferably, the rear support 50 is a connecting rod comprising a first axis 51A and a second axis 52A. Preferably, the first axis 51A and the second axis 52A are parallel to each other. More precisely, the connecting rod comprises a first vibration filtration pad 51 at its first axis 51A and a second vibration filtration pad 52 at its second axis 52A. Preferably, the pads 51, 52 are elastic.Such studs are, for example, parts marketed under the trademark “SILENTBLOC”. Such a part comprises an external tubular part intended to be housed in each of the two bores 53, 54 of the connecting rod 50, an internal tubular part, and an elastic cylindrical part extending between the internal and external tubular parts. A shaft or axle, generally a screw or bolt 55, in particular an unthreaded part of a screw rod, is inserted into the internal tubular part. Preferably, the internal and external tubular parts are metallic, for example made of steel. Thus, for the first stud 51, the screw of a bolt 55 is centered substantially on the first axis 51A, and for the second stud 52, the screw of a bolt 55 is centered substantially on the second axis 52A. Preferably, the internal and external tubular parts are metallic, for example made of steel. As illustrated in particular in [Fig.4], the connecting rod 50 is arranged at the bottom of the powertrain 5, preferably extending substantially in the longitudinal direction. For example, the first axis 51A and / or the second axis 52A of the connecting rod 50 extends transversely. Preferably, a yoke-type interface is provided on the powertrain 5 to ensure the fixing of the stud 52 with a bolt 55 and a yoke-type interface is provided on the body 2 to ensure the fixing of the stud 51 with another bolt 55. The connecting rod 50 absorbs the forces generated by the rotation of the powertrain around a transverse or substantially transverse virtual axis located between the upper filter elements 18 and the connecting rod when the powertrain is stressed, in particular during torque application (accelerations / decelerations).

[0041] The arrangement 6 further comprises at least one element 8 of the vehicle. This or these elements 8 is or are arranged, preferably fixed on the beam 10 to act as a swinging mass. Preferably, holes 15 are provided in the crossmember 10 to facilitate the fixing of the element(s) 8. For example, the element 8 is an electric charger, and / or an air conditioning pump, and / or an air conditioning compressor, and / or a battery.

[0042] The beam 10 is for example made of aluminum alloy, for example obtained by extrusion and / or by folding and / or by casting. Alternatively, the beam 10 is made of steel, for example obtained by cutting and stamping.

[0043] Alternatively, the beam 10 is made of plastic material and / or composite material. In this case, given the lightness of such materials, ballast is possibly added within its structure. However, it is preferred to add an additional element 8, for example above or below the beam, to increase the mass of the beam.

[0044] For example, the mass of the beam 10 is greater than or equal to 1 kg. For example, the element(s) 8 have a total mass greater than or equal to 5 kg.

[0045] The beam 10 is therefore indirectly fixed, via the second filtration 28, to the left and right side members 4L, 4R. Indeed, the beam 10 is rigidly fixed on, at, at the level of, each lateral support 20, 40 via the screws 30 screwed into each body 16 and the internal tubular parts 29 of the pads 28 sandwiched between the beam and the body 16. However, each lateral support 20, 40 is itself fixed to its adjacent side member by means of its corresponding side member support 62, 82 via the second filtration element, that is to say isolated by two damping pads 28.

[0046] Alternatively, each lateral support is fixed on the one hand to the adjacent spar, via a filter element, and on the other hand to the powertrain, via another filter element. In this case, no intermediate part is interposed between a lateral support and a spar or between a lateral support and the powertrain, only the lateral support comprising its first filtration pad and its two second filtration pads extends between the powertrain and the spars.

[0047] According to the illustrated embodiment, the arrangement 6 therefore comprises a first vibration filtration means or element 18 on each side of the powertrain 5. The first filtration element 18 is arranged between the first interface 61, 81 and the second filtration element 28. As a reminder, at each of its ends 12, 13, the beam 10 is connected, fixed, via the two fixings 30, to each body 16 housing the first filtration element 18. Thus, the beam 10 and the elements 8 fixed thereto constitute the beating mass between the first interfaces 61, 81 and the second interfaces 62, 82 (see [Fig.2]). Indeed, the screws 30 ensure the rigid fixing of the beam 10 on each internal tubular part of the second elements of filtration 28 and with each body 16 of the lateral supports. As a reminder, the internal tubular part, like the external tubular part, of each filtering element 28 are rigid, preferably made of steel. Thus, the beam 10 is fixed without damping, without filtration of vibrations, with respect to each lateral support 20, 40.

[0048] More precisely, the first damping or filtering or filtration of the vibrations is ensured between a first interface 61, 81 and the body 16 of a lateral support via a first element 18. The second damping or filtering or filtration of the vibrations is ensured between the body 16 of each lateral support 20, 40 and the support on the spar 62, 82 via the second element 28 which comprises two pads per lateral support.

[0049] In the illustrated embodiment, the second filtration means 28 is arranged between the second interface or support on the spar and the first filtration means 18. In other words, as illustrated in [Fig. 3], the first filtration means 18 and the second filtration means 28 are juxtaposed, joined, conjoined, close to each other.

[0050] As a reminder, each body 16 is fixed to each internal tubular part 29 of the second filtering elements 28, and to the beam 10 by the same fixings 30. Thus, the beam is integral with the body 16. As a result, the crosspiece 10 is not intended to carry the powertrain 5. Indeed, the beam 10 is only used as a beating mass by constituting a rigid element forming the beating mass with the devices or elements 8 supported by the crosspiece. In addition, the crosspiece makes it possible to receive these elements 8 and provides a function of receiving, supporting these elements 8.

[0051] As seen previously, the rear support of the connecting rod type also ensures double filtration. Indeed, the connecting rod 50 comprises the first filtration element 51, for example arranged behind, and the second filtration element 52 then arranged in front if the connecting rod extends longitudinally. Preferably, the mass of the connecting rod is studied, calculated, to optimize the filtration of vibrations. Advantageously, it is the body of the connecting rod which acts as a beating mass. The connecting rod is for example made of steel, or aluminum alloy, or cast iron.

[0052] As mentioned previously, for example, the beam 10 is made of steel, in particular sheet steel. The beam 10 can be obtained by extrusion and / or by folding and / or by stamping. The elements fixed to the crosspiece make it possible to close the assembly and therefore to stiffen the assembly. Optionally, as illustrated in Figures 3 and 5, the beam has stampings 11, in particular in order to stiffen it, in particular at the level of holes allowing the passage of the screws 30 passing through the beam. The section of the beam is for example closed by a rigid casing, for example made of aluminum, of the element 8 fixed in order to close the hollow body and thus stiffen the assembly.

[0053] Alternatively, for example, the beam 10 could be made of aluminum alloy. It is for example obtained by extrusion and / or by bending, or preferably by foundry, for example by die casting. This swing mass (beam and additional equipment such as charger, pump or other devices) is defined, calculated, modeled, in order to obtain the necessary cut-off frequency (the mass is increased to lower it or vice versa).

[0054] For example, the element 8 or the elements 8 have a sufficient mass for the mode setting (swinging mass). For this, it is preferable to use vehicle accessories such as chargers, inverters, electrical boxes in order to avoid the use of specific additional masses. Indeed, it is desirable not to penalize the total mass of the vehicle. Advantageously, the element 8 is an electric charger. For example, the electric charger 8 allows and / or participates in the recharging of the battery 9 supplying the at least one electric motor. In this embodiment, the charger 8 is fixed to the beam 10, for example on the beam 10. Preferably, in this case, the beam extends substantially in a transverse and longitudinal plane, in particular so as to facilitate the fixing of the charger on a surface having a substantial area above the beam.Preferably, the beam 10 is positioned, in the vertical direction, above the powertrain 5. For example, the beam extends above the entire powertrain 5, at least above the at least one electric motor 3.

[0055] In summary, the body or chassis 2 is doubly filtered in relation to the powertrain 5. In other words, two levels or stages of vibration filtration are present. This double filtration is compatible both for a suspended or pendulum powertrain as illustrated, and for a fixed powertrain.

[0056] The solution therefore aims to use the mass of the beam 10 and preferably the mass of the element 8 placed, preferably fixed, on the beam 10 so as to increase the initial mass of the beam alone. Thus, the beam provides a support function for all or part of the electrical engineering. As seen previously, the presence of the beam 10 is used to install the electric charger 8 there. The electric charger has a mass of, for example, between 12 kg and 20 kg. The beam, possibly made heavier by the charger and / or another element, thus acts as a “beater” and ensures optimal filtration of excitations or vibrations coming from the powertrain, in particular from the electric motor 3. In other words, the mass of the crosspiece 10 creates a beating mass system making it possible to lower the modes as illustrated in [Fig.6]. Indeed, [Fig.6] illustrates the filtration difference between a single filtration and a double filtration.We obtain a F filtration with a PDF slope which is twice as high (24dB / oct) for a double filtration DF attachment than with a single filtration SF attachment (12dB / oct - PSF slope) for frequencies. higher than that of the mode created by the double filtration device (stiffnesses and swinging masses). The solution thus isolates more effectively the medium and high frequencies of the powertrain comprising at least one electric motor. Thanks to the adjustment of the swinging mass, at the level of the beam and / or at the level of the torque recovery rod 50, the desired cut-off frequency FC is approached, for example of the order of 400 Hz.

[0057] The solution can be suitable for both a pendulum and a fixed powertrain.

[0058] The solution is simple, economical and allows the processing, attenuation and filtering of medium and high frequencies in order to improve the acoustics in particular. Comfort for vehicle passengers is increased and noise pollution for people near the vehicle is reduced.

[0059] Furthermore, the solution makes it possible to fix a powertrain comprising at least one electric motor within a body intended to receive a powertrain equipped with a thermal engine. In other words, despite the significant gap between the side members of a body intended to receive a thermal engine, the body can receive an electric powertrain without modification. Indeed, the crossmember 10 makes it possible to fill the difference in dimension in the transverse direction between an electric powertrain and a thermal powertrain. Indeed, a thermal powertrain is more voluminous at least in the transverse direction. The solution is compatible with the high torque of the electric motor and / or the electromagnetic excitations emitted by such a motor.

[0060] The solution allows the powertrain to be held firmly, rigidly, while providing a filtration gain F of the order of 12 dB of additional filtration in the frequency range between 600 Hz and 1000 Hz compared to simple SF filtration, as illustrated in the graph of [Fig.6].

[0061] Thus, although the powertrain includes at least one electric motor that emits vibrations and / or noise at annoying frequencies, the double filtration stage attenuates or even eliminates them. This results in a reduction in these emissions. An electric vehicle equipped in this way is quieter and offers better acoustic comfort for the occupants.

[0062] Although the 4R, 4L side members have been illustrated as side members arranged at the front of the vehicle, the side members may be arranged at the rear and receive a powertrain arranged at the rear of the vehicle.

[0063] In addition to isolating the powertrain, in particular comprising an electric motor, the number of fixing means 30 is optimized. As a reminder, the screws 30 make it possible to fix the beam but also to fix the second filtration elements 28 relative to the bodies 16 receiving the first filtration elements. Thus, the four screws 30 have several functions. Such a small number of screws for fixing a powertrain compared to a body reduces the assembly time, which generates savings in addition to the economy in the supply of screws. Preferably, at the level of the lower support of the rod type, only two bolts cooperating with clevises are sufficient.

[0064] Optionally, more screws, or on the contrary a single screw at one end of the beam and a single screw at the other end of the beam are sufficient.

[0065] Optionally, the arrangement may be without a weighted connecting rod, either with a non-filtered or filtered cradle of the body 2.

[0066] As a remark, the solution therefore achieves the desired objective of improving the acoustic comfort of an electric vehicle while allowing the fixing of an electric powertrain on a body intended to receive a thermal engine, and has the advantage of being able to be used on other types of motorized vehicles between a body or chassis and the powertrain, namely trucks, buses, utility vehicles or even motorized two-wheelers.

[0067] The solution can possibly be adapted to industrial machines generating vibrations, and / or to household appliances.

Claims

Claims

1. Arrangement (6) for a vehicle, in particular for a motor vehicle (1), comprising a body (2) and a powertrain (5), the arrangement (6) comprising: - a left side member (4L) and a right side member (4R), in particular a left front side member and a right front side member, - a left lateral support (20) fixed to the powertrain (5) and to the left side member (4L), the left lateral support (20) comprising a first vibration filtering element (18) and a second vibration filtering element (28), and a right lateral support (40) fixed to the powertrain (5) and to the right side member (4R), the right lateral support (40) comprising a first vibration filtering element (18) and a second vibration filtering element (28), - a beam (10) extending transversely or substantially transversely, the beam (10) being fixed to the left lateral support (20) and to the right side support (40),- a rear support (50) fixed to the powertrain (5) and to the body (2), the rear support (50) comprising a first vibration filtering element (51) and a second vibration filtering element (52), - at least one element (8) of such a vehicle being arranged on the beam (10) to act as a swinging mass.,

2. Arrangement (6) according to the preceding claim, characterized in that the arrangement (6) comprises two left fixing means (30) and two right fixing means (30), in particular screws, the beam (10) being fixed to the left lateral support (20) by the two left fixing means (30) and to the right lateral support (40) by the two right fixing means (30), the fixing means possibly extending in the vertical direction, in particular from top to bottom.

3. Arrangement (6) according to the preceding claim, characterized in that the first and second filtration elements (18, 28) of the left lateral support (20) are held relative to each other by the two left fixing means (30), and in that the first and second filtration elements (18, 28) of the right lateral support (40) are held relative to each other by the two right fixing means (30).

4. Arrangement (6) according to the preceding claim, characterized in that the two left fixing means (30) are arranged at a first end (12) of the beam (10), and in that the two right fixing means (30) are arranged at a second end (13) of the beam (10).

5. Arrangement (6) according to one of the preceding claims, characterized in that the rear support (50) is a connecting rod comprising a first axis (51 A) and a second axis (52A), in particular a first axis (51 A) and a second axis (52A) parallel to each other, the connecting rod comprising a first vibration filtering pad (51) at its first axis (51 A) and a second vibration filtering pad (52) at its second axis (52A), in particular the rear support (50) is arranged at the bottom of the powertrain (5) and / or extends substantially in the longitudinal direction.

6. Arrangement (6) according to the preceding claim, characterized in that the first axis (51 A) and / or the second axis (52A) of the connecting rod (50) extends transversely.

7. Arrangement (6) according to one of the preceding claims, characterized in that the at least one element (8) is an electric charger and / or an air conditioning pump and / or an air conditioning compressor and / or a battery.

8. Arrangement (6) according to one of the preceding claims, characterized in that the beam (10) is made of aluminum alloy, in particular obtained by extrusion and / or by folding and / or by casting, or in that the beam (10) is made of steel, in particular obtained by cutting and stamping, or in that the beam (10) is made of plastic material and / or composite material, possibly including ballast.

9. Arrangement (6) according to one of the preceding claims, characterized in that the mass of the beam (10) is greater than or equal to 1 kg.

10. Arrangement (6) according to one of the preceding claims, characterized in that the at least one element (8) has a total mass greater than or equal to 5 kg.

11. Arrangement (6) according to one of the preceding claims, characterized in that the beam (10) is positioned, in the vertical direction, above the powertrain (5).

12. Vehicle, in particular motor vehicle (1), characterized in that it comprises an arrangement (6) according to one of the preceding claims- previous.

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