Heat exchanger with front fan for automotive vehicles

Abstract

The invention provides an assembly for a motor vehicle. The assembly comprises: a retaining body (30) with a guide groove (32) having a front zone (34) and a rear zone (36); a front heat exchanger (24) with an adjustment groove (44) having a first segment (46) and a second segment (48); a connecting shaft (38) having a first section (40) in the front zone of the guide groove (32), and a second section (42) in the first segment of the adjustment groove to arrange the heat exchanger in a first position or in a second position distant from the first position. Fastening means (50) lock the second section (42) in the adjustment groove (44). During a frontal collision, the front heat exchanger (24) moves backward, displacing the connecting shaft (38) from the front zone (34) to the rear zone (36). Figure to be published with the abbreviation: Figure 2

Description

Title of the invention: Heat exchanger with front fan for motor vehicle

[0001] The invention relates to the modular nature of a front heat exchanger for a motor vehicle. The invention concerns the attachment of a front heat exchanger to a mounting point on a motor vehicle. The invention also relates to a motor vehicle.

[0002] To improve occupant comfort, a motor vehicle is equipped with a heat exchanger. This heat exchanger is coupled with a fan to force airflow from the environment, thereby increasing heat exchange capacity. This allows the passenger compartment to be heated or cooled. The exchanger is integrated into an air handling system, which is generally referred to by the acronym "HVAC," short for "heating, ventilation, and air conditioning."

[0003] The heat exchanger, commonly called a radiator, also cools components such as an engine or an electric battery powering the propulsion motor. This helps to extend their efficiency and lifespan.

[0004] The heat exchanger is arranged on the front panel; it is connected to the structure and to certain parts of the front bumper. In conjunction with the bumper system, the heat exchanger meets certain safety criteria, as well as repairability criteria. In the event of a low-speed collision, for example at 16 km / h, the bumper recoils, pushing on the heat exchanger. The latter must recoil without risk of damage to or breakage of its fixings. Such a collision is generally referred to as a "parking collision."

[0005] Document FR2998222A1 describes a protective device for a component housed inside the engine compartment of a motor vehicle. The component has at least one mounting pin for attaching to the chassis of the motor vehicle. The protective device comprises a protective plate attached to the component and at least one mounting stud interposed between the pin and the chassis.

[0006] Document WO2012020185A1 relates to a device for fixing a front-end cooling element of a motor vehicle, such as a radiator, mounted on a first part, such as a crossmember, and comprising an oblong housing receiving a pin projecting from a second part, such as the radiator. The housing has a first position for receiving the pin corresponding to normal operating conditions of the device. The first position is defined between one end of the housing and two tabs projecting from the housing. The pin is movable. in guided translation between the first position and at least one second position under the effect of an effort of amplitude exceeding a determined threshold.

[0007] Document FR2823272A1 describes a fastening device mounted on a first part and comprising means for receiving a locating element of a second part, in a first position relative to the first part, corresponding to normal operating conditions of the device. The device further comprises means for receiving the locating element in a second position, located downstream of the first position in a first preferred direction. The locating element can move from the first position to the second position when subjected to a force, in the first preferred direction, of an amplitude exceeding a predetermined threshold.

[0008] Such mounting solutions allow for recoil in the event of an impact and repairability. The same motor vehicle model is available in different versions, particularly with different types of engines. For example, a vehicle is generally available with a combustion engine, an electric motor, or a hybrid engine. The hybrid version itself comes in several charging methods. However, these different engines occupy different volumes in the engine compartment. For hybrid vehicles, the volume varies depending on the battery charging methods.

[0009] However, the front fan motor assembly is a component that remains present in every version. It must therefore be offered in different versions, with different geometries to adapt to the remaining space next to the powertrain and its energy recovery system for recharging. Consequently, at least two heat exchanger designs must be produced and developed.

[0010] However, the proliferation of heat exchanger system geometries multiplies the ranges of parts to be designed, produced, and stored. Producing different models of heat exchanger systems runs counter to the economies of scale sought in the automotive sector. Furthermore, the existence of several models exposes the system to assembly errors on assembly lines. Thus, there is a need to be able to produce different heat exchanger systems while reducing the number of parts.

[0011] The invention aims to address at least one of the problems or drawbacks encountered in the prior art. In particular, the invention aims to provide an adaptable heat exchanger assembly for motor vehicles. The invention also aims to optimize the adaptability, assembly, and impact resistance of a front-mounted heat exchanger for motor vehicles.

[0012] According to a first aspect, the invention provides an assembly for a front heat exchanger of a motor vehicle, the assembly comprising a retaining body with a longitudinally extending guide groove, the guide groove having a front zone and a rear zone; a front heat exchanger with a connecting shaft having a first section in the front zone of the guide groove; the assembly being configured so that during a frontal collision, the front heat exchanger moves backward by displacing the connecting shaft from the front zone to the rear zone; notable in that the front heat exchanger comprises an adjustment groove with a first segment and a second segment; the connecting shaft comprises a second section in the first segment of the adjustment groove; means for fixing the second section in the first segment in order to position the front heat exchanger in a first position relative to the retaining body;the second section being suitable for being fixed in the second segment in order to position the front heat exchanger in a second position distant from the first position. ;

[0013] The mounting pin is arranged in a first groove and a second groove, which preserves impact resistance while allowing for position adjustment. Thus, the same heat exchanger model is capable of withstanding a collision while remaining adaptable to different mounting configurations. The invention offers several cost savings: on potential repairs and on mass production. The resilient heat exchanger is compatible with various environments.

[0014] Preferably, the connecting shaft includes a fixing hole, the fixing means include a screw in the fixing hole.

[0015] Preferably, the fixing orifice is in the second section.

[0016] Preferably, the guide groove is longer than the adjustment groove.

[0017] Preferably, the guide groove is parallel to the adjustment groove.

[0018] Preferably, the front heat exchanger comprises a sealed circuit suitable for receiving a heat transfer fluid, a mounting branch extending longitudinally relative to the sealed circuit, the adjustment groove being formed in said mounting branch.

[0019] Preferably, the front heat exchanger comprises a front face, a rear face, a fan on the rear face, and the adjustment groove extending on the rear face.

[0020] Preferably, the adjustment groove extends longitudinally along the fan.

[0021] Preferably, the connecting axis comprises a cylindrical body having a first diameter in the first section, and in the second section a second diameter equal to the first diameter.

[0022] Preferably, the guide groove includes braking means longitudinally at a distance from the adjustment groove.

[0023] Preferably, the connecting axis includes a collar between the first section and the second section.

[0024] Preferably, the second section comprises a longitudinal thickness; the adjustment groove comprises a longitudinal length greater than twice the longitudinal thickness; more preferably greater than or equal to three times the longitudinal thickness; the longitudinal length is between 20 mm and 50 mm.

[0025] Preferably, the heat exchanger is symmetrical.

[0026] Preferably, the adjustment groove comprises a width, a length, a height; the length being greater than the width and / or the height.

[0027] Preferably, the connecting axis comprises a plastic material.

[0028] Preferably, the connecting axis is a single piece.

[0029] Preferably, the second section is opposite the first section.

[0030] Preferably, the rear zone is longitudinally opposite the front zone.

[0031] According to another aspect, the invention provides an assembly for a motor vehicle; The assembly comprises: a retaining body with a guide groove having a front and a rear zone; a front heat exchanger with an adjustment groove having a first and a second segment; a connecting shaft having a first section in the front zone of the guide groove and a second section in the first segment of the adjustment groove to position the heat exchanger in a first position or a second position distant from the first position; fastening means to lock the second section in the adjustment groove; the assembly is configured so that in a frontal collision, the front heat exchanger recoils by moving the connecting shaft from the front zone to the rear zone. Such an assembly optimizes repairability and adjustment possibilities.

[0032] According to another aspect, the invention proposes a motor vehicle comprising an assembly; remarkable in that the assembly conforms to the invention.

[0033] Preferably, the first segment is a front end and the motor vehicle includes an electric powertrain; or the first segment is a rear end and the motor vehicle includes an external electric charging socket, a hybrid powertrain with a thermal drive engine and an electric drive motor.

[0034] Preferably, the connecting axis extends vertically; the guide groove and the adjustment groove are superimposed.

[0035] Preferably, the front heat exchanger contains a heat transfer fluid.

[0036] Preferably, the motor vehicle includes a front bumper system, the heat exchanger being against the front bumper system.

[0037] Preferably, the motor vehicle comprises a structure with an upper cross member, a lower cross member, the retaining body being fixed to the upper cross member or to the lower cross member.

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

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

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

[0041] Figure 2 is a cross-section of a vehicle front heat exchanger assembly automobile according to the invention.

[0042] Figure 3 is a top view of a front heat exchanger assembly. motor vehicle according to the invention.

[0043] Fig. 4 illustrates the stacking of a retaining body and an adjustment groove of a front heat exchanger assembly for a motor vehicle according to the invention.

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

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

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

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

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

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

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

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

[0052] Figure 1 represents a motor vehicle 10 according to the invention. The vehicle is a motor vehicle in the sense that it carries a source of energy sufficient to move at a threshold speed and over a threshold distance.

[0053] The motor vehicle 10 comprises a structure 12. The structure 12 forms an outer body, or the main frame of the motor vehicle. The structure 12 delineates different compartments of the motor vehicle 10, including the passenger compartment, the cargo area, and the engine compartment (not shown). The structure 12 may be formed from an assembly of stamped and welded sheet metal parts. The structure 12 connects different parts of the motor vehicle 10, including the openings. The structure 12 forms a mounting support for a powertrain 14, the suspension systems, the steering system, and the braking systems.

[0054] The motor vehicle 10 includes energy storage means 16 that power the powertrain 14. For example, the energy storage means 16 include an electric battery. The motor vehicle 10 is preferably equipped with an external socket 18. The external socket 18 allows the energy storage means 16 to be recharged.

[0055] The powertrain 14 can be an electric powertrain in that it is exclusively electric. Its energy is entirely of electrical origin. According to an alternative embodiment of the invention, the powertrain 14 is a hybrid powertrain with a thermal drive engine and an electric drive motor. The energy storage means then comprise two energy sources of different types.

[0056] The motor vehicle 10 includes a front bumper system 20. The front bumper system 20 is capable of absorbing impact energy in the event of a pedestrian collision and / or a low-speed collision. Low speed is defined as a speed at a maximum speed of 16 km / h. In the event of a pedestrian collision with a leg, it limits potential injuries. It contributes to safety. It dents at least 20 mm. The front bumper system is also designed to withstand an impact during a parking maneuver.

[0057] The motor vehicle 10 further comprises a treatment system 22, in particular an air treatment system. The treatment system 22 is capable of both heating and cooling. It allows the air in the passenger compartment to be heated or cooled. It also allows the energy storage means 16 and / or the powertrain 14 to be cooled. It is also capable of dehumidifying the air injected into the passenger compartment.

[0058] The treatment system 22 includes a front heat exchanger 24 integrated into a circuit through which a heat transfer fluid circulates. The circuit also includes a pump, an expansion valve, and a rear heat exchanger associated with the passenger compartment or with equipment of the motor vehicle. The heat transfer fluid undergoes phase changes during heat transfer.

[0059] The front heat exchanger 24 is equipped with a motorized fan (not shown). Together, they form a motor-fan unit, generally referred to by the acronym "GMV". The fan forces an airflow to increase heat exchange when the speed of the motor vehicle 10 becomes insufficient. The front heat exchanger 24 forms, for example, a cooling front.

[0060] The motor vehicle 10 has an air inlet 26. The air inlet 26 communicates with the front heat exchanger 24 and directs an airflow from the environment to it. The air inlet 26 is integrated into the front bumper system 20. In the event of a frontal collision, the displacement of the bumper skin is at least partially transmitted to the front heat exchanger 24. The front heat exchanger 24 is longitudinally positioned against the front bumper system 20.

[0061] The motor vehicle can, for example, be a private motor vehicle or a commercial motor vehicle.

[0062] Figure 2 shows a front heat exchanger assembly for a motor vehicle, according to an embodiment of the invention. The motor vehicle may correspond to the one shown in relation to Figure 1.

[0063] The motor vehicle comprises a structure 12 with at least one cross member 28, including an upper cross member and a lower cross member. The cross member 28 forms a transverse beam. It forms an anchorage area. The assembly comprises at least one retaining body 30, preferably two retaining bodies 30, which are connected to the upper or lower cross member.

[0064] The heat exchanger before 24 has a symmetrical configuration along a horizontal plane. For the remainder of this description, the assembly will be described at one of the support body 30. However, the description applies to each support body unless explicitly stated otherwise.

[0065] The retaining body 30 has a longitudinally extending guide groove 32. The guide groove 32 extends horizontally. The retaining body 30 forms a support, an adapter for the cross member 28. It comprises a block of material. It is split by the guide groove 32. The guide groove 32 comprises a front zone 34 and a rear zone 36 that is longitudinally opposite the front zone 34. The guide groove 32 is open vertically. It may include front and rear stops. It may form a vertical passage through the retaining body 30.

[0066] The assembly includes a connecting shaft 38. The connecting shaft 38 forms a rod connecting the front heat exchanger 24 to the retaining body 30. The connecting shaft 38 is a single piece. The connecting shaft 38 extends vertically, for example. The connecting shaft 38 has a first section 40 in the front area 34 of the guide groove 32; and a second section 42. The second section 42 is opposite the first section 40; for example, vertically.

[0067] The second section 42 is inserted into the front heat exchanger 24. The assembly is configured so that during a frontal collision, the front heat exchanger 24 moves backward by displacing the connecting axis 38, in particular the first section 40 from the front area 34 to the rear area 36. The guide groove 32 forms a rail accompanying the front heat exchanger 24 during its backward movement caused by a frontal collision; particularly at low speed; in order to remain in repairable impact conditions.

[0068] The front heat exchanger 24 also includes an adjustment groove 44 into which the second section 42 is inserted. The adjustment groove 44 has a main elongation in the longitudinal direction. The adjustment groove 44 has a first segment 46 and a second segment 48. These segments may, for example, be opposite each other. They may have the same profile. The second section of the connecting shaft 38 is in the first segment 46 of the adjustment groove 44.

[0069] The assembly further includes fastening means 50. The fastening means 50 allow the second section 42 to be fixed and immobilized in the first segment 46 in order to position the front heat exchanger 24 in a first predefined position relative to the retaining body 30. The second section 42 is also suitable for being fixed in the second segment 48 in order to position the front heat exchanger 24 in a second position distant from the first position.

[0070] Thus, the front heat exchanger 24 can be fixed in different positions relative to the crossmember 28; and therefore relative to the structure 12 of the motor vehicle. The front heat exchanger 24 is compatible with different environments, and Therefore, different spaces are available in the front compartment. Different engine configurations are possible regardless of the front heat exchanger model 24. In this way, the invention simplifies product ranges, as well as the risk of assembly errors since only one part number is present in the assembly line.

[0071] The connecting shaft 38 includes a flange 52 between the first section 40 and the second section 42. The flange 52 is against the retaining body 30 and / or against the adjusting groove 44. The flange 52 provides support, for example, vertical support. It improves the retention of the front heat exchanger 24. The flange 52 improves stability.

[0072] The front heat exchanger 24 includes a sealed circuit suitable for receiving a heat transfer fluid, for example, a mixture with glycol. The front heat exchanger 24 also includes a mounting arm 54 extending longitudinally relative to the sealed circuit. Generally, the mounting arm 54 extends horizontally. The adjustment groove 44 is formed in said mounting arm 54. The adjustment groove 44 passes through the mounting arm 54. The latter is on the rear face.

[0073] The guide groove 32 and the adjustment groove 44 are superimposed. They are opposite each other. They are separated at least by the flange 52. The connecting shaft 38 comprises a cylindrical body having a first diameter in the first section 40. The second section 42 has a second diameter equal to the first diameter. This arrangement provides consistent behavior during a collision.

[0074] According to an alternative of the invention, the connecting axis extends horizontally.

[0075] According to an alternative of the invention, the connecting axis and the retaining body are arranged on one side face of the front heat exchanger.

[0076] Figure 3 is a top view of a front heat exchanger 24 of a motor vehicle, according to an embodiment of the invention. The motor vehicle may correspond to the one shown in relation to one of Figures 1 to 2. This figure also corresponds to a bottom view of the front heat exchanger 24. The retaining body is not shown for clarity; however, the guide groove 32 is shown in dashed lines. The guide groove 32 has a front zone 34 and a rear zone 36.

[0077] The forward heat exchanger 24 has a symmetrical configuration along a sagittal plane. The following description will describe the assembly at the level of one of the retaining bodies. However, the description applies to each retaining body unless explicitly stated otherwise.

[0078] The front heat exchanger 24 has an adjustment groove 44. The adjustment groove 44 mounts a first segment 46 and a second segment 48. The first Segment 46 could be a front segment. The second segment, 48, could be a rear segment. They could be separate ends.

[0079] A connecting shaft 38 links the front heat exchanger 24 to the mounting bracket. The connecting shaft 38 has a first section in the front area 34 of the adjustment groove 44; and a second section 42 in the guide groove 32. In the event of a frontal collision, for example at a speed of 16 km / h or less, the first section of the connecting shaft 38 is able to move along the guide groove 32. The assembly is configured so that the first section slides from the front area 34 to the rear area 36. The connecting shaft 38 is provided with a flange 52 (shown in dashed lines). The flange 52 is optionally wider than the mounting arm 54.

[0080] The front heat exchanger 24 is selectively mounted in a first or second position. In the first position, the second section 42 of the connecting shaft 38 (shown in solid line) is arranged in the first segment 46, while in the second position, the second section 42 (shown in dashed line) is in the second segment 48. The connecting shaft 38 is locked in position by fastening means 50. The second position is distinct from the first position. They are longitudinally offset.

[0081] The connecting shaft 38 includes a mounting hole 56 (shown in dashed lines). The fastening means 50 include a screw in the mounting hole 56. The mounting hole 56 is in the second section 42. The mounting hole 56 can be separated from the first section.

[0082] Generally, the guide groove 32 is a first groove. The adjustment groove 44 is a second groove. The guide groove 32 is parallel to the adjustment groove 44. They overlap. They communicate. The adjustment groove 44 is elongated. It forms an oblong opening. The guide groove 32 is longer than the adjustment groove 44. The guide groove 32 comprises a first length 58, and the adjustment groove 44 comprises a second length 60. The second length 60 represents between 50% and 90% of the first length 58. The lengths are maximum lengths.

[0083] The front heat exchanger 24 comprises a sealed circuit suitable for receiving a heat transfer fluid, such as a heat transfer liquid. The front heat exchanger 24 further has a mounting arm 54 extending longitudinally from the sealed circuit. The mounting arm 54 forms a projection, particularly at the rear. It forms a support arm. The adjustment groove 44 is formed in said mounting arm 54.

[0084] The front heat exchanger 24 comprises a front face 62, a rear face 64, and a fan 66 on the rear face 64. The faces are longitudinally opposed. The groove The adjustment 44 extends along the rear face 64. The mounting arm 54 extends along the fan 66. The adjustment groove 44 extends longitudinally along the fan 66. The mounting arm 54, including the adjustment groove 44, and the fan 66 are on the same face; this optimizes compactness.

[0085] The second section 42 includes a longitudinal thickness. The longitudinal thickness can be its diameter. The second length 60 of the adjusting groove 44 is greater than the longitudinal thickness. It is more than twice the longitudinal thickness; preferably greater than or equal to three times the longitudinal thickness. The second length 60 is between 20 mm and 50 mm. It allows a gap between the first and second positions of the front heat exchanger 24 of between 25 mm and 35 mm.

[0086] The adjustment groove 44 comprises a width, a longitudinal length such as the second length 60, and a height. The longitudinal length is greater than the width and / or the height. This configuration optimizes the adjustment stroke and compactness, particularly of the mounting arm 54. The longitudinal length is measured lengthwise. It is a maximum length. Its elongation increases the adjustment stroke available for the connecting shaft, and consequently for the front heat exchanger 24.

[0087] According to an alternative of the invention, the fastening means include adhesive or welding.

[0088] According to an alternative of the invention, the collar is opposite the first section with respect to the second section.

[0089] According to an alternative embodiment of the invention, the collar is coupled to the fastening means. For example, it is a washer against a screw head.

[0090] According to one option or alternative of the invention, the second section is fixed at a third position, between the first position and the second position.

[0091] According to one option or alternative of the invention, the second position is transversely distant from the first position.

[0092] Figure 4 shows a retaining body 30 for a front heat exchanger assembly of a motor vehicle, according to an embodiment of the invention. The motor vehicle may correspond to the one shown in relation to one of Figures 1 to 3. The front heat exchanger is not shown for clarity; however, the adjustment groove 44 is drawn as a reference point. The connecting shaft 38 is shown in the recoil phase during a frontal collision of the vehicle.

[0093] The retaining body 30 includes a mounting plate 68. The mounting plate 68 is intended to be fixed to a cross member, or any other support. The guide groove 32 includes a front zone 34 and a rear zone 36. The rear zone 36 is longitudinally opposite the front zone 34. They respectively comprise a rear stop and a front stop. The connecting axis 38, in this case the first section 40, is between the front zone 34 and the rear zone 36. The guide groove 32 includes braking means 70.

[0094] The assembly is configured so that, in a frontal collision, the front heat exchanger recoils by displacing the connecting shaft 38 from the front zone 34 to the rear zone 36, and possibly beyond. The recoil is preferably controlled by the braking means 70. During the recoil, the adjustment groove 44 also recoils.

[0095] The braking means 70 are adapted to cooperate with the connecting shaft 38 in order to exert resistance to the displacement of the front heat exchanger, both in the assembled state and during a frontal collision. The braking means 70 are distributed between the front zone 34 and the rear zone 36. In the assembled state, the braking means 70 extend longitudinally at a distance from the adjustment groove 44. This feature allows for a greater braking effect. The braking means 70 are configured to hold the connecting shaft 38 in the front zone 34. When a force exceeds a predetermined threshold, for example during a frontal collision, the braking means 70 allow a longitudinal displacement of the connecting shaft 38 along the guide groove 32. The displacement is at least 40 mm.

[0096] The braking means 70 comprise a series of teeth distributed longitudinally in the guide groove 32. Alternatively, the braking means comprise horizontal lips adapted to cooperate by friction with the connecting shaft 38. Alternatively, the lateral edges of the guide groove 32 are brought together in order to be adjusted to the width of the connecting shaft 38.

[0097] According to an alternative of the invention, the adjustment groove is inclined relative to the guide groove.

[0098] According to a preferred embodiment, the retaining body and / or the connecting shaft are made of plastic or composite material(s). The plastic material may include a thermoplastic or a thermosetting material. According to a preferred embodiment, the plastic material is selected from the group comprising polypropylene, polyamide, polyphthalamide, polyetheretherketone, polyphenylene sulfide, polyamide-imide, polyetherimide, polyarylamide, polyepoxide, unsaturated polyester, vinyl ester, or polyester-vinylester resins. For example, the composite material comprises a matrix of a plastic material as described above with reinforcement. For example, the reinforcement comprises glass or carbon fibers.

[0099] The retaining body and / or the connecting shaft comprises at least 10% by weight of recycled plastic material based on the total weight of the plastic material; preferably from 10 to 80% by weight; more preferably from 20 to 60% by weight or 30 to 40% by weight. The use of recycled plastic material reduces the vehicle's ecological footprint.

[0100] The invention comprises the combination of all the embodiments illustrated by all the figures.

[0101] Fig. 4 is an isometric view. It respects a specific scale, real angles and real proportions.

Claims

Demands

1. Assembly for a front heat exchanger (24) of a motor vehicle (10), the assembly comprising a retaining body (30) with a longitudinally extending guide groove (32), the guide groove (32) having a front zone (34), a rear zone (36); a front heat exchanger (24) with a connecting shaft (38) having a first segment (40) in the front zone (34) of the guide groove (32); the assembly being configured such that during a frontal collision, the front heat exchanger (24) moves backward by displacing the connecting shaft (38) from the front zone (34) to the rear zone (36); characterized in that the front heat exchanger (24) comprises an adjustment groove (44) with a first segment (46) and a second segment (48); the connecting shaft (38) includes a second section (42) in the first segment (46) of the adjusting groove (44);means for fixing the second section (42) in the first segment (46) in order to position the front heat exchanger (24) in a first position relative to the retaining body (30); the second section (42) being able to be fixed in the second segment (48) in order to position the front heat exchanger (24) in a second position distant from the first position.

2. Assembly according to claim 1, characterized in that the connecting shaft (38) includes a fixing hole (56), the fixing means (50) include a screw in the fixing hole (56); preferably, the fixing hole (56) is in the second section (42).

3. Assembly according to any one of claims 1 to 2, characterized in that the guide groove (32) is longer than the adjustment groove (44); preferably, the guide groove (32) is parallel to the adjustment groove (44).

4. Assembly according to any one of claims 1 to 3, characterized in that the front heat exchanger (24) comprises a sealed circuit suitable for receiving a heat transfer fluid, a mounting arm (54) extending longitudinally with respect to the sealed circuit, the adjustment groove (44) being formed in said mounting arm (54).

5. Assembly according to any one of claims 1 to 4, characterized in that the front heat exchanger (24) comprises a front face (62), a rear face (64), a fan (66) on the rear face (64), the throat adjustment groove (44) extending on the rear face (64); preferably, the adjustment groove (44) extends longitudinally along the fan (66).

6. Assembly according to any one of claims 1 to 5, characterized in that the connecting axis (38) comprises a cylindrical body having a first diameter in the first section (40), and in the second section (42) a second diameter equal to the first diameter.

7. Assembly according to any one of claims 1 to 6, characterized in that the guide groove (32) includes braking means (70) longitudinally at a distance from the adjustment groove (44); preferably, the connecting shaft (38) includes a collar (52) between the first section (40) and the second section (42).

8. Assembly according to any one of claims 1 to 7, characterized in that the second section (42) comprises a longitudinal thickness; the adjustment groove (44) comprises a longitudinal length greater than twice the longitudinal thickness; preferably greater than or equal to three times the longitudinal thickness; the longitudinal length is between 20 mm and 50 mm.

9. Motor vehicle (10) comprising an assembly; characterized in that the assembly conforms to any one of claims 1 to 8; preferably, the first segment (46) is a front end and the motor vehicle (10) comprises an electric powertrain (14); or the first segment (46) is a rear end and the motor vehicle (10) comprises an external electric charging socket (18), a hybrid powertrain (14) with a thermal drive engine and an electric drive motor.

10. Motor vehicle (10) according to claim 9, characterized in that the connecting axis (38) extends vertically; the guide groove (32) and the adjustment groove (44) are superimposed.

Images