Oil conduit assembly for a drive unit
The oil guide arrangement addresses complex oil routing issues in drive units by using a centralized oil chamber and channels to ensure efficient lubrication and cooling of components, improving lubrication and cooling performance.
Patent Information
- Application Number
- PCT/EP2025/054587
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-02-26
- Filing Date
- 2025-02-20
- Publication Date
- 2025-09-04
AI Technical Summary
Existing oil guide arrangements for drive units, particularly those with electric machines and multiple gear sets, require complex and inefficient oil routing to lubricate and cool components, leading to suboptimal lubrication and cooling performance.
An oil guide arrangement featuring a stationary component with a wall section and an oil supply device that forms an annular oil chamber, connected to main and secondary oil channels, ensuring efficient lubrication and cooling by centrally supplying oil to various components through leak-free fluid connections and throttle elements.
Facilitates simple and effective oil guidance to multiple components, enhancing lubrication and cooling efficiency while minimizing leaks and optimizing oil distribution within the drive unit.
Smart Images
Figure EP2025054587_04092025_PF_FP_ABST
Abstract
Description
[0001] Oil guide arrangement for a drive unit
[0002] Technical area
[0003] The present invention relates to an oil guide arrangement for a drive unit, a drive unit for a vehicle and a vehicle.
[0004] State of the art
[0005] An oil guide arrangement supplies oil to various components of the drive unit for lubrication and cooling. Particularly in a drive unit comprising an electric machine with a stator and a rotor, a rotor bearing, a first gear set, and a second gear set, a large number of oil channels are required to lubricate the components.
[0006] Description of the invention
[0007] It is an object of the present invention to provide an improved oil guide arrangement which enables oil guidance in a simple manner and ensures good oiling of the components.
[0008] The object is achieved by an oil guide arrangement having the features of claim 1. Advantageous further developments are the subject of the dependent claims.
[0009] An oil guide arrangement is applicable to a drive unit with an electric machine having a rotor, a rotor bearing, a first gear set, and a second gear set. The oil guide arrangement has a stationary component, a wall section, a stator, and an oil supply device. The stator is configured to drive the rotor. The wall section can be stationary. The wall section can be connected to the stationary component, for example, a housing, in a rotationally fixed manner. The oil supply device is in fluid communication with an oil chamber. The stationary component is configured such that the oil chamber is formed at least in sections by an inner circumference of the stationary component and an outer circumference of the stator. The oil chamber can be an oil pressure chamber in which the oil is under pressure. The oil chamber can be annular. The oil chamber can be arranged radially outside the stator.
[0010] The wall section forms a main oil channel and an oil channel for the second gear set. The stator forms an oil channel for the stator. The oil chamber is fluidly connected to the oil channel for the stator, the main oil channel, and the oil channel for the second gear set. This centrally supplies oil to many oil channels, enabling easy oil routing and ensuring good lubrication of the components.
[0011] If two elements are coupled together, a movement of one element causes a reaction in the other element. For example, a connection can be provided by a positive or frictional connection. Additional elements can be provided between the elements. For example, a connection can be rotationally fixed. A rotationally fixed connection between two elements is understood to be a connection in which the two elements are rigidly coupled to one another in all intended states, e.g., a transmission, so that they essentially have the same speed. The elements can be present as individual components connected to one another in a rotationally fixed manner or as a single piece.
[0012] If two elements are fluidly connected, a fluid, such as oil, can be conducted from one element to the other. The fluid connection can be designed to be leak-free, so that the oil is essentially completely conducted from one element to the other.
[0013] An oil flow direction is the direction in which the oil moves within the oil guide assembly to reach the components being lubricated. Specifically, the beginning of an oil channel is located upstream of an end of an oil channel in the oil flow direction.
[0014] The main oil channel can have an outer section that extends from the outside inward in the radial direction of the rotor bearing. The main oil channel can have an inner section that extends inward in the radial direction and in the axial direction. The inner section can extend obliquely in the direction of the rotor bearing with respect to a radial direction. An extension direction of the inner section can have an obtuse angle with respect to an extension direction of the outer section. The main oil channel can be in fluid communication with the oil chamber via a recess at a beginning in the oil flow direction of the main oil channel. The recess can extend flatly in the axial direction.
[0015] The oil channel for the stator can be designed as a bore in the stator. The bore can be oriented radially. At the end of the bore in the oil flow direction, another bore can be oriented axially. The additional bore can be formed obliquely to the radial and axial directions.
[0016] The oil channel for the second gear set can extend radially from the outside to the inside. The oil channel for the second gear set can be in fluid communication with the oil chamber by means of a recess at a beginning in the oil flow direction of the main oil channel.
[0017] In one embodiment, the wall section further forms an oil channel for the rotor bearing, an oil channel for the rotor, and an oil channel for the first gear set. This enables oil guidance in a simple manner. The oil channel for the rotor bearing is in fluid communication with the main oil channel. The oil channel for the rotor is in fluid communication with the main oil channel. The oil channel for the first gear set is in fluid communication with the main oil channel. In particular, each of the oil channel for the rotor bearing, the oil channel for the rotor, and the oil channel for the first gear set is separately in fluid communication with the main oil channel. The oil channel for the rotor bearing can be in fluid communication with one end of the main oil channel. The oil channel for the rotor bearing can extend from the end of the inner section of the main oil channel in the same direction as the inner section. In particular, the oil channel for the rotor bearing can be an extension of the inner section of the main oil channel.
[0018] The oil passage for the rotor may be in fluid communication with the end of the inner portion of the main oil passage. The oil passage for the rotor may extend from the end of the inner portion of the main oil passage in the axial and radial directions of the rotor bearing.
[0019] The oil passage for the first gear set may be in fluid communication with one end of the main oil passage. The oil passage for the first gear set may extend obliquely in the axial direction and in the radial direction from a beginning of the oil passage for the rotor bearing. The oil passage for the first gear set may extend in the axial direction opposite to the oil passage for the rotor. The oil passage for the first gear set may extend in an extension of the oil passage for the rotor. The oil passage for the first gear set may have a section at the end in the oil flow direction that is oriented in the axial direction.
[0020] At least one of the main oil channel and the oil channels for the rotor, the rotor bearing, the first gear set, and the second gear set can be formed by means of cylindrical bores. At least two of the main oil channel and the oil channels for the rotor, the rotor bearing, the first gear set, and the second gear set can have the same diameter.
[0021] Throttle elements, such as nozzles or bearings, for throttling the oil flow can be provided in at least one of the main oil channel and the oil channels for the rotor, for the rotor bearing, for the first gear set, and the second gear set. A throttle element can be provided at one end of one of the oil channels in the flow direction. In particular, a throttle element can be provided at each end of the oil channel for the rotor bearing, at the end of the oil channel for the rotor, and at the end of the oil channel for the first gear set. In particular, the oil channel for the second gear set can have a section with a diameter at one end in the oil flow direction that is smaller than a diameter of a section at the beginning of the oil channel for the second gear set. The main oil channel can have a throttle element at its beginning.
[0022] In one embodiment, the oil channel for the rotor bearing, the oil channel for the rotor, and the oil channel for the first gear set can be in fluid communication with the main oil channel at the same position. In particular, the main oil channel can split at one position into the oil channel for the rotor bearing, the oil channel for the rotor, and the oil channel for the first gear set.
[0023] In one embodiment, the oil guide arrangement may include a collecting component with a collecting surface. The collecting component may be a separate component. The oil channel for the first gear set may include an opening. The opening of the oil channel for the first gear set may be located at one end of the oil channel for the first gear set, in the direction of oil flow.
[0024] The collecting surface of the collecting component can be designed to collect oil from the opening of the oil channel for the first gear set in the radial direction and direct it in the axial direction to the first gear set. The collecting surface can redirect an oil flow from the radial direction to the axial direction. The collecting surface can cover the opening of the oil channel for the first gear set in the axial direction. The collecting surface can be arranged radially outside the opening of the oil channel for the first gear set. The collecting surface can extend in a trough-like manner in the circumferential direction.
[0025] In one embodiment, the first gear set may include a first spur gear. The oil guide assembly may include a first pin, which may be configured to support the first spur gear. The collecting component may be configured to guide oil in the axial direction toward the first pin.
[0026] In one embodiment, the first bolt may have a cavity and a recess. The cavity may be open toward the collecting surface. The recess may extend radially from the cavity through the first bolt to an outer side of the first bolt.
[0027] The cavity can be designed as a cylindrical bore in the axial direction in the first pin. The recesses can be designed as cylindrical bores. The diameter of the bores of the recesses can be smaller than the diameter of the bore for the cavity. Several recesses can be evenly distributed in the circumferential direction. Two recesses can be arranged opposite one another in the radial direction of the first pin. Recesses can be arranged centrally to a bearing of the first spur gear. The collecting component can be designed to conduct oil in the axial direction to the cavity of the first pin.
[0028] In one embodiment, the second gear set may include a second spur gear. The oil guide arrangement may include a second pin, which may be configured to support the second spur gear. The second pin may include a cavity. The cavity of the second pin may be in fluid communication with the oil passage for the second gear set. The cavity of the second pin may be in fluid communication with one end of the oil passage for the second gear set. The second pin may include a recess. The recess may extend radially from the cavity through the second pin to an outer side of the second pin.
[0029] The cavity can be designed as a cylindrical bore extending axially in the second pin. The cavity can be open axially toward the oil channel for the second gear set. A throttle element can be arranged in the cavity. The recesses can be designed as cylindrical bores. The diameter of the bores of the recesses can be smaller than the diameter of the bore for the cavity.
[0030] Several recesses can be evenly distributed in the circumferential direction. Two recesses can be arranged opposite one another in the radial direction of the second pin. Recesses can be arranged centrally with respect to a bearing of the second spur gear. Two recesses can be arranged next to one another in the axial direction. Two bearings arranged next to one another can be provided to support the second spur gear. The recesses arranged next to one another in the axial direction can each be arranged centrally with respect to one of the bearings.
[0031] In one embodiment, the first gear set can be formed by a first planetary gear set with a first planetary gear. The second gear set can be formed by a second planetary gear set with a second planetary gear. The oil guide arrangement can have a first planetary pin. The first planetary pin can form the first pin. The first planetary pin can be designed to support the first planetary gear. The oil guide arrangement can have a second planetary pin. The second planetary pin can form the second pin. The second planetary pin can be designed to support the second planetary gear.
[0032] The first planetary gear can be rotatably mounted on the first planetary pin by means of a bearing, for example, a needle bearing. The second planetary gear can be rotatably mounted on the second planetary pin by means of two adjacently arranged bearings, for example, needle bearings.
[0033] In one embodiment, the oil guide arrangement may include a first planetary carrier. The first planetary carrier may be rotatably mounted by means of a bearing. The first planetary carrier may be rotatably mounted on the wall section. The first planetary carrier may be configured to receive the first planetary pin. The retaining component may be configured to be non-rotatably connected to the first planetary carrier.
[0034] The collecting component can have an elastically deformable undercut. The undercut can have an arcuate cross-section. The undercut can extend in the circumferential direction. The undercut can be designed to be connected to a circumferentially extending projection of the first planet carrier. The collecting component can be connected to the first planet carrier in a rotationally fixed manner by means of a screw connection. In one embodiment, the oil guide arrangement can have a second planet carrier. The second planet carrier can at least partially form the wall section. The second planet carrier can completely form the wall section. The second planet carrier can be designed to receive the second planet pin. The second planet carrier can form the main oil channel, the oil channel for the rotor bearing, the oil channel for the rotor, the oil channel for the first gear set, and the oil channel for the second gear set.
[0035] In one aspect, a drive unit for a vehicle comprises an electric machine having a rotor, a rotor bearing, a first gear set, a second gear set, a first output shaft, a second output shaft, and an oil guide arrangement according to any one of the preceding embodiments. The rotor is configured to transmit torque to the first gear set. The rotor bearing rotatably supports the rotor. The rotor bearing can rotatably support the rotor on the wall section. The first gear set and the second gear set are mechanically operatively connected to one another such that torque can be transmitted from the first gear set to the second gear set. The first output shaft is configured to output torque from the first gear set. The second output shaft is configured to output torque from the second gear set.
[0036] The first and second gear sets can function as a differential. The first gear set can be formed by a first planetary gear set. The first planetary gear set can have a first sun gear, a first planetary gear, and a first ring gear. The first sun gear can mesh with the first planetary gear. The first planetary gear can mesh with the first ring gear. The second gear set can be formed by a second planetary gear set. The second planetary gear set can have a second sun gear, a second planetary gear, and a second ring gear. The second sun gear can mesh with the second planetary gear. The second planetary gear can mesh with the second ring gear. The first planetary gear set and the second planetary gear set can be arranged in the same plane in the axial direction. The first ring gear and the second sun gear can form a sun ring gear.The first planetary gear set and the second planetary gear set can be arranged offset from one another in the axial direction. In one aspect, a vehicle has drive wheels and a drive unit according to one of the preceding aspects. The first output shaft is configured to drive one of the drive wheels. The second output shaft is configured to drive another of the drive wheels.
[0037] Short description of the characters
[0038] Figure 1 shows a sectional view of an embodiment of an oil guide arrangement.
[0039] Figure 2 shows a further sectional view of the embodiment of the oil guide arrangement.
[0040] Figure 3 shows a further sectional view of the embodiment of the oil guide arrangement.
[0041] Detailed description of embodiments
[0042] Figure 1 shows a sectional view of an embodiment of an oil guide arrangement. The oil guide arrangement is applicable to a drive unit with an electric machine having a rotor 71 shown in Figure 2, a rotor bearing 44 shown in Figure 2, a first gear set (described in more detail with reference to Figure 3), in this case a first planetary gear set 10, and a second gear set (described in more detail with reference to Figure 3), in this case a second planetary gear set 20. The oil guide device has a stationary component 60, a wall section 61, a stator 70, and an oil supply device 90.
[0043] The wall section 61 forms a main oil channel 93 and oil channels for oiling the rotor 71, the rotor bearing 44, the first gear set, and the second gear set. The main oil channel 93, an oil channel 94 for the rotor bearing 44, an oil channel 95 for the rotor 71, and an oil channel 96 for the first gear set are described in more detail with reference to Figure 2. In the present case, the wall section 61 is formed by a second planet carrier 22 for the second gear set. The wall section 61 is connected in a rotationally fixed manner to the stationary component 60, in this case a housing. The stator 70 forms an oil channel 92 for the stator 70.
[0044] The oil supply device 90 is in fluid communication with an oil chamber 91. The oil chamber 91 is in fluid communication with the oil channel 92 for the stator 70, with the main oil channel 93, and with the oil channel 97 for the second gear set. The oil channel 94 for the rotor bearing 44, the oil channel 95 for the rotor 71, and the oil channel 96 for the first gear set are in fluid communication with the main oil channel 93.
[0045] Further details of the oil guide arrangement are described below. The direction of oil flow is indicated by arrows in Figures 1 to 3.
[0046] The stationary component 60 is configured such that the oil chamber 91 is formed circumferentially by an inner circumference of the stationary component 60 and an outer circumference of the stator 70. The oil chamber 91 is annular. The oil chamber 91 extends radially outside the stator 70. The oil chamber 91 is axially bounded by the wall section 61 and an end face of the stator 70. The oil chamber 91 is sealed by O-rings on the wall section 61. The oil chamber 91 is supplied with oil by the oil supply device 90. In this case, the oil in the oil chamber 91 is under pressure. The oil chamber 91 thus forms an oil pressure chamber.
[0047] A portion of the oil passage 92 for the stator 70 is radially oriented within the stator 70. In one embodiment, an axially oriented bore is formed at one end of the radially oriented portion, in the oil flow direction. The axially oriented bore may be configured for cooling the stator 70.
[0048] The oil channel 97 for the second gear set is in fluid communication with the oil chamber 91 by means of a shallow recess at a beginning of the oil channel 97 for the second gear set. The shallow recess extends in the axial direction. A diameter of a portion of an end of the oil channel 97 for the second gear set is smaller than a diameter of a portion of a beginning of the oil channel 97 for the second gear set. The portion with the small diameter serves as a throttle element. A second planetary pin 23 for the second gear set has a cavity formed by a bore in the axial direction and open toward the oil channel 97 for the second gear set. The second planetary pin 23 has a number of recesses extending from the cavity of the second planetary pin 23 to an outer side of the second planetary pin 23.The recesses are formed by bores that have a significantly smaller diameter than the bore of the cavity of the second planetary pin 23. In the present case, two opposing recesses are provided centrally to each of two bearings of a second planetary gear 24 of the second gear set. In a further embodiment, a throttle element can be provided in the cavity of the second planetary pin 23 instead of the small diameter in the region of the end of the oil channel 97 for the second gear set. In a further embodiment, both a throttle element can be provided in the cavity of the second planetary pin 23 and the small diameter in the region of the end of the oil channel 97 for the second gear set.
[0049] The cavity of the second planetary pin 23 is in fluid communication with the oil channel 97 for the second gear set. The oil is directed to one of the second planetary gears 24 via the cavity and the recesses of the second planetary pin 23.
[0050] In one embodiment, a number of second planetary pins 23 and a number of oil channels 97 are provided. The number of oil channels 97 for the second gear set are evenly distributed in the circumferential direction and each is in fluid communication with one of the second planetary pins 23.
[0051] Figure 2 shows a further sectional view of the embodiment of the oil guide arrangement from Figure 1. The rotor 71 of the electric machine is arranged radially within the stator 70.
[0052] The main oil channel 93 is in fluid communication with the oil chamber 91 via a horizontally extending, flat recess. The flat recess extends in the axial direction. The main oil channel 93 consists of two cylindrical bores. The first bore extends vertically in Figure 1 and is located radially outward. The second bore of the main oil channel 93 extends obliquely inward from the upper end of the first bore of the main oil channel 93 toward the rotor bearing 44 in the radial direction.
[0053] The oil channel 94 for the rotor bearing 44 is formed as an extension of the main oil channel 93. The oil channel 94 for the rotor bearing 44 ends, in the oil flow direction, at a bearing seat for the rotor bearing 44. The oil channel 94 for the rotor bearing 44 is in fluid communication with the main oil channel 93 at the same location as the oil channel 95 for the rotor 71 and the oil channel 96 for the first gear set. The oil channel 95 for the rotor 71 extends in the direction of the rotor 71 as an extension of the oil channel 96 for the first gear set and is formed by a bore. In other words, the main oil channel 93 branches into the oil channel 94 for the rotor bearing 44, the oil channel 95 for the rotor 71, and the oil channel 96 for the first gear set.
[0054] The oil channel 96 for the first gear set extends to the right in Figure 2 and ends with an opening a short distance from a radially arranged section of a first planet carrier 12 of the first gear set. From the opening of the oil channel 96 for the first gear set, the oil escaping in the oil flow direction is conveyed radially outward along the first planet carrier 12 due to centrifugal force during operation of the drive unit.
[0055] A collecting component 80 is arranged radially outside the opening of the oil channel 96 for the first gear set. The collecting component 80 has a collecting surface. The collecting surface is designed to collect oil from the opening of the oil channel 96 for the first gear set radially and to direct it axially to the first gear set. The collecting surface extends in a trough-like manner in the circumferential direction. The collecting component 80, with its collecting surface, is designed to direct oil axially to a cavity of a first planetary pin 13 shown in Figure 3. The oil is directed radially to the bearing of one of the first planetary gears 14 via recesses in the first planetary pin 13. The collecting component 80 is designed to be non-rotatably connected to the first planetary carrier 12.For this purpose, the receiving component 80 has a circumferentially extending undercut with an arcuate cross-section, which can be hooked over a circumferentially extending projection of the first planet carrier 12. The projection projects in the radial direction.
[0056] A throttle element is provided at each end of the oil channel 94 for the rotor bearing 44, the oil channel 95 for the rotor 71 and the oil channel 96 for the first gear set.
[0057] Figure 3 shows another sectional view of the embodiment of the oil guide arrangement. The sectional view extends radially through the first gear set, in this case the first planetary gear set 10, and through the second gear set, in this case the second planetary gear set 20. The first gear set has a number of first planet gears 14. One of the first planet gears 14 is rotatably mounted on the first planetary pin 13 of the oil guide arrangement by means of a bearing, in this case a needle bearing.
[0058] The first planetary pin 13 has the cavity formed by a bore in the axial direction and open toward the receiving component 80. The first planetary pin 13 has a number of recesses extending from the cavity of the first planetary pin 13 to an outer side of the first planetary pin 13. The recesses are formed by bores that have a significantly smaller diameter than the bore of the cavity. In the present case, two opposing recesses are provided. The recesses are arranged centrally with respect to the bearing of one of the first planetary gears 14.
[0059] In addition to the first planetary gears 14, the first gear set has a first sun gear and a first ring gear 15. The first sun gear meshes with one of the first planetary gears 14. One of the first planetary gears 14 meshes with the first ring gear 15 and is rotatably mounted on one of the first planetary pins 13. The first planetary pins 13 are connected to the first planet carrier 12. The second gear set has a number of second planetary gears 24, a second sun gear 21, and a second ring gear 25. One of the second planetary gears 24 is rotatably mounted on the second planetary pin 23 of the oil guide arrangement by means of two bearings arranged side by side, in this case a needle bearing. The second sun gear 21 meshes with one of the second planetary gears 24. One of the second planetary gears 24 meshes with the second ring gear 25 and is rotatably mounted on one of the second planetary pins 23.The second planetary bolts 23 are connected to the second planetary carrier 22.
[0060] The first ring gear 15 and the second sun gear 21 are formed by a sun ring gear 30. The sun ring gear 30 has the first ring gear 15 on an inner circumference. The sun ring gear 30 has the second sun gear 21 on an outer circumference. The first gear set and the second gear set are arranged in the same plane in the axial direction.
[0061] Reference symbol
[0062] First planetary gear set
[0063] First planet carrier of the first planetary gear set
[0064] First planetary pin of the first planetary gear set
[0065] First planetary gear of the first planetary gear set
[0066] First ring gear of the first planetary gear set
[0067] Second planetary gear set
[0068] Second sun gear of the second planetary gear set
[0069] Second planet carrier of the second planetary gear set
[0070] Second planetary pin of the second planetary gear set
[0071] Second planetary gear of the second planetary gear set
[0072] Second ring gear of the second planetary gear set
[0073] Sun gear
[0074] rotor bearing
[0075] Stationary component
[0076] Wall section
[0077] stator
[0078] rotor
[0079] Catching component
[0080] Oil supply device
[0081] Oil room
[0082] Oil channel for the stator
[0083] Main oil channel
[0084] Oil channel for the rotor bearing
[0085] Oil channel for the rotor 96 Oil channel for the first wheel set
[0086] 97 Oil channel for the second wheel set
Claims
Patent claims 1 . Oil guide arrangement for a drive unit with an electric machine having a rotor (71), a rotor bearing (44), a first gear set and a second gear set, wherein the oil guide arrangement has a stationary component (60), a wall section (61), a stator (70) and an oil supply device (90), wherein the oil supply device (90) is in fluid communication with an oil chamber (91), the stationary component (60) is designed such that the oil chamber (91) is formed at least in sections by an inner circumference of the stationary component (60) and an outer circumference of the stator (70), the wall section (61) forms a main oil channel (93) and an oil channel (97) for the second gear set, the stator (70) forms an oil channel (92) for the stator (70), and the oil chamber (91) is connected to the oil channel (92) for the stator (70), with the Main oil channel (93) and is in fluid communication with the oil channel (97) for the second wheel set.
2. Oil guide arrangement according to claim 1, characterized in that the wall section (61) further forms an oil channel (94) for the rotor bearing (44), an oil channel (95) for the rotor (71) and an oil channel (96) for the first gear set, the oil channel (94) for the rotor bearing (44) with the main oil channel (93) in Fluid connection, the oil channel (95) for the rotor (71) is in fluid connection with the main oil channel (93), and the oil channel (96) for the first gear set is in fluid connection with the main oil channel (93).
3. Oil guide arrangement according to claim 2, characterized in that the oil channel (94) for the rotor bearing (44), the oil channel (95) for the rotor (71) and the oil channel (96) for the first gear set are in fluid communication with the main oil channel (93) at the same position.
4. Oil guide arrangement according to claim 2 or 3, characterized in that the oil guide arrangement has a collecting component (80) with a collecting surface, the oil channel (96) for the first gear set has an opening, and the collecting surface is designed such that it collects oil from the opening of the oil channel (96) for the first gear set in the radial direction and guides it in the axial direction to the first gear set.
5. Oil guide arrangement according to claim 4, characterized in that the first gear set has a first spur gear, the oil guide arrangement has a first bolt which is designed to support the first spur gear, and the collecting component (80) is designed to guide oil in the axial direction to the first bolt.
6. Oil guide arrangement according to claim 5, characterized in that the first bolt has a cavity and a recess which extends radially from the cavity through the first bolt to an outer side of the first bolt.
7. Oil guide arrangement according to one of the preceding claims, characterized in that the second gear set has a second spur gear, the oil guide arrangement has a second bolt which is designed to support the second spur gear and has a cavity, the cavity of the second bolt is in fluid communication with the oil channel (97) for the second gear set, and the second bolt has a recess which extends in the radial direction from the cavity through the second bolt to an outer side of the second bolt.
8. Oil guide arrangement according to one of the preceding claims, characterized in that the first gear set is formed by a first planetary gear set (10) with a first planetary gear (14), the second gear set is formed by a second planetary gear set (20) with a second planetary gear (24), the oil guide arrangement has a first planetary pin (13) and a second planetary pin (23), the first planetary pin (13) forms the first pin and is designed to support the first planetary gear (14), and the second planetary pin (23) forms the second pin and is designed to support the second planetary gear (24).
9. Oil guide arrangement according to claim 8, characterized in that the oil guide arrangement has a first planet carrier (12) which is rotatably mounted by means of a bearing and is designed to receive the first planet pin (13), wherein the collecting component (80) is designed such that it can be connected to the first planet carrier (12) in a rotationally fixed manner.
10. Oil guide arrangement according to claim 8 or 9, characterized in that the oil guide arrangement has a second planet carrier (22) which at least partially forms the wall section (61) and is designed to receive the second planet pin (23).
11. Drive unit for a vehicle with an electric machine having a rotor (71), a rotor bearing (44), a first gear set, a second gear set, a first output shaft, a second output shaft and an oil guide arrangement according to one of the preceding claims, wherein the rotor (71) is designed to transmit a torque to the first gear set, the rotor bearing (44) rotatably supports the rotor (71), the first gear set and the second gear set are mechanically operatively connected to one another such that a torque can be transmitted from the first gear set to the second gear set, the first output shaft is designed to output a torque from the first wheel set, and the second output shaft is designed to output a torque from the second wheel set.
12. A vehicle having drive wheels and a drive unit according to claim 11, wherein the first output shaft is configured to drive one of the drive wheels and the second output shaft is configured to drive another of the drive wheels.
Citation Information
Patent Citations
Axle drive
US11255419B2
In-wheel motor drive device
US20170197503A1
Drive device
WO2024004435A1