Bearing assembly and vehicle

Description

15 BEARING ASSEMBLY AND VEHICLE Technical field of the invention

[001] The invention relates to a bearing comprising a means for distributing lubricating oil. The invention also relates to an assembly comprising such a bearing and a shaft extending through such a bearing. The invention further relates to a vehicle comprising such an assembly or such a bearing. Previous technique

[002] A vehicle, in particular a motor vehicle, comprises a powertrain. This powertrain generally comprises at least one internal combustion engine and / or at least one electric motor and at least one gearbox. This gearbox is generally disposed between one or more motors and at least one drive shaft, intended to transmit torque to at least one means of contact with the ground, such as a wheel. This type of gearbox is generally composed of meshing pinions and uses oil for its lubrication. In particular, such a gearbox comprises at least one pinion called an “intermediate pinion” or “freely rotating pinion”. Such a pinion requires lubrication, in particular a supply of oil, in its area of ​​contact with a shaft on which it rotates or slides.

[003] However, in the case of an element located outside such a gearbox, at the end of such a shaft supporting at least one intermediate pinion, it is complex to distribute lubricating oil to such a freely rotating pinion. Presentation of the invention

[004] The objective of the invention is to provide a bearing that overcomes the disadvantages described above. In particular, the invention proposes an assembly that allows for a simple architecture in a gearbox bearing, while ensuring optimal lubrication in at least one pinion. Petition 870250105542, dated 11 / 18 / 2025, p. 6 / 30 / 15 intermediary. Summary of the invention

[005] To this end, the invention provides a bearing comprising: - a first hole intended to receive a rotational guide means for a shaft, - a second hole intended to be traversed by such a shaft, the first and second holes being coaxial, or substantially coaxial, with a main bearing shaft, the bearing comprising a shoulder extending radially from, or substantially from, the second hole, in particular coaxial with the main shaft, the shoulder comprising an outer surface, the shoulder comprising a means for distributing lubricating oil under pressure from the outer surface to the second hole.

[006] Oil distribution methods may include: - an external circumferential groove that can be formed on the outer surface of the shoulder, and the external circumferential groove can extend in a plane perpendicular to the main axis of the bearing, - an internal circumferential groove that can be formed in the second hole, and the internal circumferential groove can extend in a plane perpendicular to the main axis of the bearing, - at least one main radial hole that may extend between the outer circumferential groove and the inner circumferential groove.

[007] The bearing may comprise a flange, in particular extending radially from the shoulder, and an oil inlet, in particular a conduit-type inlet, to supply oil to the distribution media, which may pass through the flange.

[008] The invention also relates to an assembly comprising: - an axis that extends coaxially or substantially Petition 870250105542, dated 11 / 18 / 2025, p. 7 / 30 / 15 coaxially, with the main shaft of a bearing, the shaft comprising an axial bore, at least one main radial conduit and at least one secondary radial conduit, the radial conduits opening into the axial bore, - a bearing as defined above, the second hole of the bearing being traversed by the shaft.

[009] The set may also include: - a gear-changing device comprising a housing and comprising at least one freely rotating pinion opposed to at least one secondary radial conduit, in particular a gear-changing device, such as a gearbox or reducer type gear-changing device, the shaft being capable of passing through the housing to the outside of the gear-changing device, so as to be driven in rotation or to drive in rotation an element, in particular an electric machine, arranged outside the gear-changing device.

[0010] The assembly may comprise a pump for distributing pressurized oil, in particular an electric pump, located within the gear shifting mechanism, the pump being connected directly or indirectly to the oil distribution medium.

[0011] The bearing can be fixed to the housing on an inner face of the housing.

[0012] The housing may comprise a centering hole, and the bearing shoulder may be centered within the centering hole.

[0013] The housing may comprise a cavity that opens into the centering hole, and the inlet may open into the cavity so as to supply pressurized oil to the distribution medium.

[0014] The distribution means and at least one main radial conduit of the shaft may extend in the same plane, or substantially in the same plane, perpendicular to the main axis of the Petition 870250105542, dated 11 / 18 / 2025, page 8 / 30 / 15 bearing, in order to facilitate the transfer of oil from the distribution means to the axial orifice, in order to supply oil to at least one secondary radial conduit.

[0015] The axial hole of the shaft can be formed from a first end of the shaft, the axial hole being sealed at the first end, in particular by a plug.

[0016] The invention also relates to a vehicle, in particular a motorized vehicle, comprising an assembly as defined above or a bearing as defined above. Description of the drawings

[0017] These objects, features and advantages of the present invention will be described in detail in the following description of an embodiment given by way of non-limiting example in connection with the accompanying drawings, in which: Figure 1 is a schematic view of a motorized vehicle according to an embodiment of the invention.

[0018] Figure 2 is a perspective view of an assembly according to an embodiment of the invention.

[0019] Figure 3 is a partial exploded perspective view of the assembly according to the embodiment of the invention.

[0020] Figure 4 is a cross-sectional view of the assembly according to the embodiment of the invention, taken along a plane passing through the main axis of a bearing.

[0021] Figure 5 is a perspective view of a housing for a gear shifting device of the assembly according to the embodiment of the invention.

[0022] Figure 6 is a partial cross-sectional view of a shaft of the assembly according to the embodiment of the invention.

[0023] Figure 7 is a partial cutaway view of the bearing according to Petition 870250105542, dated 11 / 18 / 2025, p. 9 / 30 / 15, concerning the nature of the invention. Detailed description

[0024] The direction in which a vehicle, particularly 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 right-handed XYZ reference frame is used, where X is the longitudinal direction in the front-to-back direction of the vehicle, oriented backward, Y is the transverse direction oriented to the right, and Z is the vertical direction oriented upward. The forward direction corresponds to the direction in which the vehicle normally travels in the longitudinal direction and is opposite to the backward direction.

[0025] As shown in figure 1, a vehicle, preferably a motorized vehicle 1, comprises an assembly 5. The assembly 5 or the vehicle 1 comprises a bearing 10.

[0026] As shown in figures 2, 3 and 4, assembly 5 comprises a bearing 10. The bearing 10 comprises a main geometric shaft AP. Assembly 5 further comprises a shaft 20. The shaft 20 extends coaxially, or substantially coaxially, with the main geometric shaft AP of the bearing 10.

[0027] More specifically, as shown in particular in figures 4 and 7, the bearing 10 comprises a first hole 11. The first hole 11 is intended to receive a rotational guide means 40 for the shaft 20. For example, the rotational guide means may be a bushing made of a material with a low coefficient of friction. Alternatively, the rotational guide means may be, for example, a ball bearing, a needle bearing or a roller bearing. The bearing 10 further comprises a second hole 17. The first hole 11 and the second hole 17 are traversed by the shaft 20. The first and second holes 11, 17 are coaxial, or substantially coaxial. Petition 870250105542, dated 11 / 18 / 2025, page 10 / 30 / 15 in relation to the main geometric axis AP of the bearing 10. The bearing 10 further comprises a shoulder 12 that extends radially from, or substantially from, the second hole 17. Preferably, the shoulder 12 is coaxial with the main geometric axis AP. More preferably, the shoulder 12 is cylindrical. The shoulder 12 comprises an outer surface 13 which is, for example, cylindrical.

[0028] As shown in particular in figure 4, the shoulder 12 comprises a distribution means 30 for lubricating oil from the outer surface 13 of the shoulder 12 to the second hole 17 of the bearing 10.

[0029] Preferably, as shown in Figure 7, the oil distribution means 30 comprises an outer circumferential groove 14 formed in, on, or on the outer surface 13 of the shoulder 12. The outer circumferential groove 14 extends in a plane A perpendicular to the main geometric axis AP of the bearing 10, as shown in Figure 4. The oil distribution means 30 further comprises an inner circumferential groove 15 formed in, on, or on the second hole 17. The inner circumferential groove 15 also extends in plane A, or substantially in plane A. Preferably, the circumferential grooves 14, 15 are centered with respect to plane A. The distribution means 30 further comprises at least one main radial hole 16 extending between the outer circumferential groove 14 and the inner circumferential groove 15. For example, the distribution means 30 comprises between two and twelve main radial holes 16.Preferably, six main radial holes 16 are provided, distributed angularly every sixty degrees.

[0030] For example, as shown in particular in figures 4 and 7, the bearing 10 comprises a flange 18, or external radial ring, or external radial extension. Preferably, the flange 18 extends radially from the shoulder 12, in a plane B perpendicular to the principal geometric axis AP of the bearing 10. In other words, planes A and B are mutually parallel and Petition 870250105542, dated 11 / 18 / 2025, page 11 / 30 / 15 displaced from each other in the direction of the main geometric axis AP, that is, planes A and B do not coincide. Preferably, bearing 10 additionally comprises an inlet 31, or branch, for lubricating oil. For example, as shown in figures 2, 3, 4 and 7, inlet 31 is a conduit-type inlet, either rigid or tubular with a circular cross-section and, preferably, with an elbow.

[0031] Preferably, the inlet is a tube-type inlet designed to receive a flexible hose. In this case, the inlet 31 preferably comprises a protrusion or thickened portion 32 at its connection end, in order to ensure sealing while holding in place a flexible oil supply hose installed in the inlet 31. The inlet 31 supplies the distribution medium 30 with oil passing through the flange 18.

[0032] Alternatively, entry 31 is flexible or comprises a flexible portion.

[0033] More specifically, as shown in particular in Figure 4, the shaft 20 comprises an axial hole 21. The shaft 20 further comprises at least one main radial conduit 22 that opens into the axial hole 21. For example, four main radial conduits 22, for example distributed at 90-degree intervals, are formed in the shaft 20. Alternatively, more main radial conduits 22 may be provided. The shaft 20 further comprises at least one secondary radial conduit 23 that opens into the axial hole 21. For example, two secondary radial conduits 23 pass completely through the shaft 20, so as to be centered, or substantially centered, on the axis of the shaft 20. In this case, the two secondary radial conduits 23 are arranged at 180 degrees. Alternatively, more secondary radial conduits 23 can be provided.

[0034] Advantageously, as shown in particular in figure 4, assembly 5 additionally comprises a change device. Petition 870250105542, dated 11 / 18 / 2025, page 12 / 30 / 15 gears 2. The gear shifting device 2 is, for example, a gear shifting device of the gearbox or reduction gear type. The gear shifting device 2 comprises a housing 3. The gear shifting device 2 further comprises at least one pinion 41 freely rotating on the shaft 20. Each pinion “pulley” 41 is arranged axially opposite to one or more corresponding secondary radial conduits 23. It should be noted that the shaft 20 passes through the housing 3 to the outside of the gear shifting device 2. The shaft is then rotated, or causes an element 4 to rotate. For example, element 4 is, or comprises, an electrical machine. For example, element 4 is an electric motor or an alternator. Element 4 is located outside the gear shift device 2. For example, assembly 5 comprises element 4.

[0035] The shaft 20 comprises a first end 24. Preferably, the element 4 is arranged at the end of the shaft 20, on the side of the first end 24. For example, the axial hole 21 of the shaft 20 is formed from the first end 24 of the shaft 20, as shown in particular in figure 6. The axial hole 21 is preferably sealed at the first end 24, for example, by a plug 25. The plug 25 can be, for example, a cylindrical metal disc or cap. Preferably, the plug 25 is press-fitted, adjusted, for example, by contraction, into a recess 26 formed at the end of the shaft 20.

[0036] Preferably, assembly 5 further comprises a pump 6 for pumping and distributing oil to the distribution medium 30. Pump 6 is, for example, an electric pump. Preferably, pump 6 is arranged within the gear shifting device 2, i.e., within device 2. Pump 6 is then connected directly or indirectly to the oil distribution medium 30. Indirectly means, for example, that the oil discharged by the pump reaches the inlet 31 before reaching the distribution medium 30. A Petition 870250105542, dated 11 / 18 / 2025, page 13 / 30 / 15 The pump is fed by immersion or by means of an oil supply conduit immersed in an oil reservoir, also called a reservoir, for example, at the bottom, i.e., at the bottom in the vertical direction, of the gear shift device.

[0037] For example, as shown in particular in figures 3, 4 and 5, the bearing 10 is fixed to the housing 3. More specifically, the housing 3 is fixed to an inner face 7 of the housing 3. By “inner face” of the housing is meant a face facing the inside of the gear shifting device 2.

[0038] For example, fasteners 50, such as screw or nut type fasteners, cooperate with the holes 51 formed in the flange 18 and with the threaded holes 53 or holes formed in the housing 3. Preferably, the flange 18 comprises radially extending protrusions where the holes 51 are formed, and the housing 3 comprises radially extending protrusions where the threaded holes 53 are formed. Preferably, the handles and, consequently, the corresponding holes and threaded holes, are arranged at 120 degrees around the main geometric axis AP. In this case, three screws 50 pass through the handles of the flange 18 through the holes 51 and are screwed into the threaded holes 53 of the housing 3 (see in particular figure 3). Alternatively, fewer or more screws may be used. Alternatively, one or more other fastening methods may be used to secure the bearing 10 to the housing 3.

[0039] Preferably, the inner face 7 of the housing 3 is a flat annular surface. Advantageously, a first seal 37 is provided to ensure sealing between a flat surface 19 of the bearing 10 and the inner face 7 of the housing 3. Preferably, the seal 37 is a sealing ring. Alternatively, the seal has a square or rectangular cross-section. As a further alternative, the seal 37 is a flat gasket that... Petition 870250105542, dated 11 / 18 / 2025, page 14 / 30 / 15 extends over a substantial common area between surface 19 of bearing 10 and inner face 7 of housing 3 (not shown).

[0040] The seal 37 is disposed in a circular groove formed on the surface 19 of the flange 18 of the bearing 10. Preferably, the circular groove to receive the seal 37 is centered on the main geometric axis AP. For example, the groove section is square, rectangular, or substantially semicircular. Alternatively, or additionally, a circular groove is formed on the surface 7 of the housing 3. In this case, the seal can be disposed in the circular groove of the housing 3.

[0041] As an additional advantage, the housing 3 further comprises a centering hole 8 with a suitable diameter, i.e., slightly larger than the diameter of the outer cylindrical surface 13 of the cylindrical shoulder 12 of the bearing 10. Thus, the bearing 10 is centered with respect to the housing 3 by at least partially inserting the shoulder 12 into the centering hole 8 of the housing 3. Preferably, as shown in particular in Figure 5, the housing 3 further comprises a cavity 9, recess or groove, which opens into the centering hole 8. Advantageously, the cavity 9 extends through the entire depth of the hole 8 in the axial direction. In this case, the inlet 31 preferably opens into the cavity 9, or at least faces the cavity 9, so as to supply oil to the distribution medium 30, as shown in Figure 4 by arrows corresponding to the oil flow F.As a reminder, the distribution means 30 comprises the outer circumferential groove 14 formed on the outer surface 13 of the shoulder 12. Advantageously, as shown in Figure 4, the inlet 31 projects from the surface 19 towards the housing 3. More specifically, a fitting or end portion 33 of the inlet 31 is located within the cavity 9 once the bearing is mounted in the housing 3. For this purpose, a shoulder 34 is preferably provided on the inlet 31, so as to facilitate the mounting of the inlet 31 in the bearing 10 and to ensure that the end portion 33 is... Petition 870250105542, dated 11 / 18 / 2025, page 15 / 30 / 15 project less than the depth of the cavity 9 opposite this end portion 33. Thus, the cooperation of the end portion 33 of the inlet opening in the cavity 9 ensures that the bearing 10 is positioned angularly in relation to the housing 3 around the main geometric axis AP. Thanks to this angular positioning, it is easy to arrange at least one main radial hole 16 of the shoulder 12 opposite the cavity 9, which facilitates the transfer of oil from the inlet 31 to one or more radial holes that open in the cavity 9.

[0042] In summary, inlet 31 communicates with cavity 9. Cavity 9 communicates with the outer circumferential groove 14 and, preferably, with at least one main radial orifice 16. The outer circumferential groove 14 communicates with the inner circumferential groove 15 through the main radial orifices 16 in the shoulder 12. The inner circumferential groove 15 communicates with the main radial conduits 22 of shaft 20. Thus, as the main radial conduits 22 open into the axial orifice 21 of the shaft and the secondary radial conduits 23 also open into the axial orifice 21, the oil is distributed in the secondary radial conduits 23. In fact, the distribution medium 30 and one or more main radial conduits 22 of shaft 20 extend in the same plane, or substantially in the same plane A, to facilitate, promote and maximize oil transfer. from the distribution medium 30 to the axial orifice 21, in order to supply oil 23 to one or more secondary radial conduits.

[0043] As the conduits 23 are arranged opposite the pinion bearings “pulleys” when the gear change device 2 is mounted, the pinion bearings “pulleys” are lubricated by the oil from the inlet 31.

[0044] To direct the oil flow and prevent any oil leakage from the gear shifting device 2, a seal 42 is arranged in a hole formed in the housing 3, near element 4. The seal 42 comes into contact with the shaft 20, for example, near the shoulder 12. To guide the oil flow, another seal 43 is arranged in a Petition 870250105542, dated 11 / 18 / 2025, page 16 / 30 / 15 hole formed in bearing 10. The receiving hole for the seal 43 has a diameter larger than the diameter of the second hole 17 and smaller than the diameter of the first hole 11 intended to receive the rotational guide means 40. The seal 43 is thus arranged, in the direction of the main geometric axis AP, between the two holes 11, 17. Preferably, the seals 42, 43 are lip seals and / or ring-type seals.

[0045] In summary, thanks to the pump located in the gear shift device, the entire oil circuit for lubricating one or more freely rotating pinions is kept internal to the gear shift device. This internal design facilitates the management of the sealing requirements of this oil circuit. In case of a possible leak in this circuit, there are no consequences, as the leak occurs inside the gear shift device, which is able to collect the oil, for example, by directing the leaked oil to the oil pan.

[0046] In this way, the solution avoids the installation of conduits and / or pipes for supplying lubricating oil outside the gear shifting device. As a result, any oil leakage external to the gear shifting device 2 associated with the supply of lubricant to the intermediate pinion bearings is avoided.

[0047] As mentioned above, the solution allows an oil supply to reach the axial hole 21 of shaft 20, in a manner compatible with the presence of element 4 which is driven by shaft 20, or causes shaft 20 to be driven, at the end 24 of shaft 20. Furthermore, the solution allows shaft 20 to be supported by bearing 10, in particular through the first hole 11 which receives the rotational guide means 40 of shaft 20. Preferably, the lubricating oil supply, or inlet 31, can be arranged above the main geometric axis AP of the bearing, or below this axis, or at another level.

[0048] As mentioned above, end 33 of entry 31 Petition 870250105542, dated 11 / 18 / 2025, page 17 / 30 / 15 provides angular indexing of bearing 10 during assembly, engaging in groove 9 of housing 3.

[0049] As a reminder, the lubrication circuit seal is ensured by seals 42, 43, which are arranged on both sides, in the axial direction, of the main radial holes 16 and the main radial conduits 22, since the housing 3, the shaft 20 and the bearing 10 are mounted together. This seal is complemented by the seal 37 between the surfaces 7 and 19 of the housing and the bearing, respectively. Thus, seal 37 “isolates” the lubrication circuit from the rest of the gear shifting device 2, while lip seals 42, 43 provide sealing between the rotating shaft 20 and the stationary bearing 10. Advantageously, as mentioned above, the rotational guide means 40, preferably a bearing-type rotational guide means, is fixed to the bearing 10. Furthermore, the plug 25 prevents any oil leakage from the axial hole 21 at the first end 24 of the shaft 20.As a reminder, the axial opening at end 24 is formed to produce the axial hole 21, preferably by machining.

[0050] During the operation of pump 6, the lubricant is distributed through the inlet 31 to the chamber or cavity 9. Preferably, the pump flow rate allows for the continuous filling of cavity 9, thus creating pressure within the circuit. In other words, lubrication is forced, i.e., from a closed circuit provided by the pump, and not gravity lubrication by lubricant flow. The circuit in particular comprises the inlet 31, cavity 9, external and internal grooves 14, 15, main radial orifices 16, main radial conduits 22, axial orifice 21 and one or more secondary radial conduits 23, thus ensuring the lubrication of one or more intermediate pinions 41. It should be noted that the pressure within the oil circuit is sufficient to neutralize the centrifugal force generated by the rotation of shaft 20, which tends to expel the oil. Petition 870250105542, dated 11 / 18 / 2025, page 18 / 30 / 15 radially through its radial openings or conduits 22, 23. In other words, the pressure in the lubrication circuit creates a centripetal force within the main radial orifices 16 and the main radial conduits 22. The oil supply in the secondary radial conduits 23 is, on the one hand, driven by the pressure supplied by the pump and, on the other hand, aided and facilitated by the centrifugal force generated by the rotation of the shaft 20, so as to reach the bearings of the intermediate pinions 41.

[0051] As mentioned above, the solution is particularly suitable for the presence of an element 4 at the end of shaft 20, for example, an electric machine. In fact, the presence of such a machine at the end of the shaft has no impact on the lubrication circuit of the intermediate pinions. The solution can be adapted to any architecture comprising an internal shaft extending to the outside of a gearbox-type device, in particular a shaft rotationally coupled to an external element.

[0052] In addition, the solution offers a particularly short oil circuit. This short supply path reduces pressure losses. Because the circuit is internal, there is no need to protect certain parts of the circuit against leakage risks.

[0053] Although the embodiment shows a bearing attached to a housing, the bearing and housing assembly can alternatively be made as a single piece, i.e., monoblock. In this case, the enclosure is obtained in a different way. Alternatively, the lubrication circuit can be arranged away from a bearing, in which case the support for rotational orientation of the shaft is positioned at a distance from the circuit. In this case, for example, the circuit, including the radial holes in the shoulder, the grooves and the conduits in the shaft, can be arranged in a more cantilevered manner with respect to the rotational orientation of the shaft.

[0054] In addition, the solution provides a simple architecture in Petition 870250105542, dated 11 / 18 / 2025, p. 19 / 30 / 15 bearing of a gear shifting device, which facilitates possible internal maintenance of such device.

[0055] In summary, the solution achieves the desired objective of allowing optimal lubrication of an intermediate pinion in its contact area with the shaft on which the intermediate pinion rotates or slides, despite the presence of at least one element disposed outside the gearbox at the end of the shaft supporting the intermediate pinion, while remaining simple, reliable and economical. It also has the advantage of being suitable for use in gearboxes of other types of motor vehicles, such as trucks, buses, utility vehicles and even two-wheeled vehicles. Petition 870250105542, dated 11 / 18 / 2025, page 20 / 30

Claims

1 / 4 CLAIMS 1. Bearing (10), comprising: - a first hole (11) intended to receive a rotational guide means (40) for a shaft (20), - a second hole (17) intended to be traversed by such shaft (20), the first and second holes (11, 17) being coaxial, or substantially coaxial, with a main geometric axis (Main Axis, AP) of the bearing (10), the bearing (10) comprising a shoulder (12) extending radially from, or substantially from, the second hole (17), in particular coaxial with the main geometric axis (Main Axis, AP), the shoulder (12) comprising an outer surface (13), characterized in that the shoulder (12) comprises a means (30) for distributing pressurized lubricating oil from the outer surface (13) to the second hole (17).

2. Bearing (10) according to the preceding claim, characterized in that the oil distribution means (30) comprises: - an outer circumferential groove (14) formed on the outer surface (13) of the shoulder (12), the outer circumferential groove (14) extending in a plane (A) perpendicular to the main geometric axis (Main Axis, AP) of the bearing (10), - an inner circumferential groove (15) formed in the second hole (17), the inner circumferential groove (15) extending in plane (A), - at least one main radial hole (16) extending between the outer circumferential groove (14) and the inner circumferential groove (15).

3. Bearing (10) according to any of the preceding claims, characterized in that the bearing (10) Petition 870250105542, dated 11 / 18 / 2025, p. 21 / 30 2 / 4 comprises a flange (18), in particular extending radially from the shoulder (12), and an oil inlet (31), in particular a conduit-type inlet, for supplying oil to the distribution means (30), passing through the flange (18).

4. Assembly (5), characterized in that it comprises: - a shaft (20) extending coaxially, or substantially coaxially, with the main geometric axis (Main Shaft, AP) of a bearing (10), the shaft (20) comprising an axial hole (21), at least one main radial conduit (22) and at least one secondary radial conduit (23), the radial conduits (22, 23) opening into the axial hole (21), - a bearing (10) as defined in any of the preceding claims, the second hole (17) of the bearing (10) being traversed by the shaft (20).

5. Assembly (5) according to the preceding claim, characterized in that it further comprises: - a gear-changing device (2) comprising a housing (3) and comprising at least one freely rotating pinion (41) on the shaft (20), opposite to at least one secondary radial conduit (23), in particular a gear-changing device (2) such as a gearbox or reducer type gear-changing device, the shaft (20) passing through the housing (3) to the outside of the gear-changing device (2) so as to be rotated or to rotate an element (4), in particular an electric machine, arranged outside the gear-changing device (2).

6. Assembly (5) according to the preceding claim, characterized in that the arrangement (5) further comprises a pump (6) for distributing pressurized oil, in particular an electric pump, arranged within the gear shifting device (2), the pump (6) Petition 870250105542, dated 11 / 18 / 2025, page 22 / 30 3 / 4 being directly or indirectly connected to the oil distribution means (30).

7. Assembly (5) according to claim 5 or 6, characterized in that the bearing (10) is fixed to the housing (3) on an inner face (7) of the housing (3).

8. Assembly (5) according to any one of claims 5 to 7, characterized in that the housing (3) comprises a centering hole (8) and in that the shoulder (12) of the bearing (10) is centered within this centering hole (8).

9. Assembly (5) according to the preceding claim in combination with claim 3, characterized in that the housing (3) comprises a cavity (9) that opens into the centering hole (8) and in that the inlet (31) opens into the cavity (9) so as to supply the distribution means (30) with oil.

10. Assembly (5) according to any one of claims 4 to 9, characterized in that the distribution means (30) and at least one main radial conduit (22) of the shaft (20) extend in the same plane, or substantially in the same plane (A), perpendicular to the main geometric axis (Main Shaft, AP) of the bearing (10), so as to facilitate the transfer of oil from the distribution means (30) to the axial orifice (21), and thus supply oil to at least one secondary radial conduit (23).

11. Assembly (5) according to any one of claims 4 to 10, characterized in that the axial hole (21) of the shaft (20) is formed from a first end (24) of the shaft (20), the axial hole (21) being closed at the first end (24), in particular by a plug (25).

12. Vehicle, in particular a motorized vehicle (1), characterized in that it comprises an assembly (5) as defined in Petition 870250105542, dated 11 / 18 / 2025, p. 23 / 30 4 / 4 any of claims 4 to 11 or a bearing (10) as defined in any of claims 1 to 3. Petition 870250105542, dated 11 / 18 / 2025, p. 24 / 30

Images