Transmission, in particular motor vehicle transmission

Abstract

The invention relates to a transmission (1), in particular a motor vehicle transmission, having a transmission housing (10) and at least one transmission gearwheel (2) which is arranged in the transmission housing (10) and is supported in the transmission housing (10) in a manner rotatable about an axis (21), wherein the transmission gearwheel (2) is partially arranged in an oil sump (5) of the transmission (1) and wherein an oil distributor (4) is arranged in the transmission housing (10) such that oil thrown out of the oil sump (5) by the transmission gearwheel (2) during operation is fed to the oil distributor (4). It is proposed that a free oil feed region (8) is formed outside the oil distributor (4), wherein the free oil feed region (8) extends, seen in a cross-section plane (x-y) of the transmission (1) extending perpendicularly to the axis (21) of the transmission gearwheel (2) and through the transmission gearwheel (2), in a spatial region (18) which widens between a second inner wall portion (12) of the transmission housing (10) and an outer circumference (22) of the transmission gearwheel (2) from an input region (81) to an output region (82) in the direction towards the oil distributor (4), wherein the free oil feed region (8) is free from mechanical obstacles which can prevent oil transport from the input region (81) in the direction of the output region (82).

Description

[0001] Description

[0002] title

[0003] Transmissions, especially motor vehicle transmissions

[0004] State of the art

[0005] In the current state of the art, transmissions for motor vehicles are often used in combination with an electric motor drive. As with conventional transmissions, the transmission elements must be lubricated with oil. To increase transmission efficiency and reduce costs, an oil pump for transmission lubrication, which is often used in conventional transmissions, can be dispensed with. The lubrication and cooling of the transmission elements is preferably achieved through passive oil distribution. The lubrication of the rotating transmission elements is important for the reliability of the transmission. Insufficient lubrication can result in an insufficient supply of oil to the bearings of the transmission elements and the sealing rings. This can lead to increased wear and even failure of the transmission elements.

[0006] A transmission with passive oil distribution is known, for example, from US 3,529,698, which discloses a transmission with a transmission housing and at least one transmission gear arranged in the transmission housing. The transmission gear is mounted in the transmission housing so as to be rotatable about an axis and is partially arranged in an oil sump of the transmission. An outer circumference of the transmission gear lies on the upper side of the transmission housing in sections opposite a first inner wall section of the transmission housing at a constant distance. A second inner wall section adjoins the first inner wall section at a transition point, as seen in a direction of rotation of the transmission gear, wherein the distance between the outer circumference of the transmission gear and the second inner wall section increases continuously or steadily from the transition point towards the second inner wall section.An oil distributor is arranged in the transmission housing such that, during operation, oil thrown up from the oil sump by the transmission gear is conveyed to the oil distributor. The transmission known from US 3,529,698 has an oil line part with a partition wall, wherein the partition wall has a separating edge arranged near the outer circumference of the transmission gear. The transmission oil is conveyed by the transmission gear through the gap between the first inner wall section and the outer circumference of the transmission gear up to the separating edge, so that a portion of the transmission oil reaches the oil distributor through a gap between the partition wall and the second inner wall section of the transmission. In this case, a surge of oil thrown up from the oil sump by the transmission gear is transported over the circumference of the transmission gear and forced to enter the gap at the separating edge.

[0007] A similar transmission with passive oil distribution is known from DE 44 14 000 C1. Here, too, a separating element with a separating edge is provided near the rotating transmission gear. Oil thrown out of the oil sump by the transmission gear passes only through a gap between an inner wall of the transmission housing and a separating edge into a spiral-shaped oil guide channel, and from there finally to the oil distributor.

[0008] Disclosure of the invention

[0009] The invention relates to a transmission, in particular a motor vehicle transmission, preferably for an electric drive, with a transmission housing and at least one transmission gear arranged in the transmission housing, which is mounted in the transmission housing so as to be rotatable about an axis, wherein the transmission gear is partially arranged in an oil sump of the transmission, wherein an outer circumference of the transmission gear is partially opposite a first inner wall section of the transmission housing at a constant distance, wherein, viewed in a direction of rotation of the transmission gear, a second inner wall section adjoins the first inner wall section at a transition point, wherein the distance between the outer circumference of the transmission gear and the second inner wall section increases continuously from the transition point in the direction of the second inner wall section, and wherein an oil distributor is arranged in the transmission housing such thatthat, during operation, oil raised from the oil sump by the transmission gear is conveyed to the oil distributor. According to the invention, a free oil conveying area is formed outside the oil distributor between the second inner wall section and the outer circumference of the transmission gear. The free oil conveying area, viewed in a cross-sectional plane of the transmission perpendicular to the axis of the transmission gear and through the transmission gear, extends into a space between the second inner wall section and the outer circumference of the transmission gear, widening from an inlet area at the transition point to an outlet area in the direction of the oil distributor. The free oil conveying area is free of mechanical obstacles that could impede oil transport from the inlet area toward the outlet area.

[0010] In the context of this application, "oil" is understood to mean a liquid lubricant suitable for transmissions, regardless of whether it is marketed commercially as oil. In particular, it can be a lubricant known as ATF (Automatic Transmission Fluid) or similar substances.

[0011] The at least one transmission gear can be any gear in a set of gears. In particular, the transmission gear can mesh with another transmission gear and serve within the transmission to transmit torque from a drive shaft to an output shaft. This does not preclude the possibility of multiple oil-feeding transmission gears being present in the transmission.

[0012] The outer circumference of a gear wheel is understood to be an imaginary circumferential cylindrical surface that encloses the tooth tips of the gear wheel's teeth.

[0013] A transmission oil sump is an area within the transmission housing where oil collects under the influence of gravity. A transmission gear partially located in a transmission oil sump is a gear with a lower part immersed in the oil sump, in the direction of gravity, while an upper part of the gear protrudes from the oil sump. When the transmission gear rotates, it absorbs oil from the oil sump and transports it against gravity to a release point or knock-off point.

[0014] An oil distributor is understood to be a component that can be installed in the transmission housing and is designed in such a way that it can absorb oil and distribute it within the transmission to locations in the transmission where oil would otherwise not reach, or would not reach in sufficient quantities, without the oil distributor. Different geometric designs are possible here. The oil distributor can, for example, have at least one collecting basin. The oil distributor can also have at least one baffle wall from which any oil that hits it drips off or flows off in a preferred direction. The oil distributor can have channels and at least one outlet, in particular a plurality of outlets, wherein oil flowing out of the at least one outlet or the plurality of outlets under the influence of gravity is supplied to the bearings of rotating transmission components. The oil distributor can be intended to be arranged in a predetermined installed state in the transmission.The predetermined installation state defines an orientation of the oil distributor in the transmission housing relative to gravity, wherein the predetermined installation state represents a specific orientation of the oil distributor relative to the transmission housing when the orientation of the associated transmission relative to the Earth's gravity field is known. The orientation of the transmission relative to the Earth's gravity field is generally known for a normal position of the transmission, wherein the normal position is the position in which the transmission is aligned relative to gravity in its intended use. If the transmission is a motor vehicle transmission, the transmission assumes a specific orientation relative to the Earth's gravity field when the motor vehicle is aligned horizontally relative to the Earth's gravity field in the normal position. This applies regardless of whether the motor vehicle is actually moved horizontally to the Earth's gravity field or is driving up an incline with an angle of inclination.From a known installation position of the transmission in the vehicle, it is therefore possible to determine how an oil distributor should be installed in the transmission so that it assumes a specific orientation relative to gravity in the normal position. Since, in most possible driving conditions of the vehicle, the angle of inclination deviates only very moderately by + / - 20° from the horizontal when driving downhill or uphill, the geometric design of the oil distributor is adapted to a horizontal vehicle position.

[0015] A free oil production area, which is free of mechanical obstacles that could impede oil transport from the input area towards the output area, is understood to be a spatial area within the transmission housing that extends between the second inner wall section and the outer circumference of the transmission gear. This spatial area begins at an input area at a transition point between a first inner wall section, which lies opposite the outer circumference of the transmission gear at a constant distance, and a second inner wall section in which this distance increases. Since the second inner wall section does not follow a cylindrical profile of the first inner wall section in the direction of rotation of the transmission gear, the second inner wall section moves increasingly away from the outer circumference in the direction of rotation, so that a widening spatial area is created that ends at an output area.The outlet area is located in front of the oil distributor, preferably directly in front of the oil distributor. Oil that the transmission gear takes in from the oil sump during operation of the transmission and which reaches the transition point through a gap between the first inner wall section and the outer circumference of the transmission gear, begins to separate from the transmission gear behind the transition point under the influence of centrifugal force. The actual separation point depends on the rotational speed of the transmission gear and can also be behind the input area in the circumferential direction of the transmission gear. The oil separates from the transmission gear in a gush and forms an oil gush that is thrown into the space expanding behind the input area.A large portion of the oil quantity transported in the oil surge moves through the expanding spatial area on a trajectory dependent on the rotational speed of the transmission gear. The inclination angle of this trajectory within the spatial area depends on the rotational speed. From the respective trajectory, the oil quantities transported in the oil surge fall towards the second inner wall section and towards the outer circumference of the transmission gear. Nevertheless, the second inner wall section and the further circumference of the transmission gear are also wetted by the tails of the detaching oil surge, whereby a portion of the oil also runs along the inner wall of the transmission and along the flanks of the transmission gear and can partially return to the oil sump.Most of the oil, however, leaves the free oil conveying area, following the course of the throwing path through the exit area, and behind this hits either the oil distributor or a deflection wall. There are no gear components or wall parts of the gear housing in the free oil conveying area. The second inner wall section and the outer circumference of the gear wheel flank this free oil conveying area without being part of it themselves. The free oil conveying area therefore contains no mechanical structures. It only contains air or oil. In particular, there is no separating edge or separating wall in the free oil conveying area. The oil that is separated from the gear wheel under the influence of centrifugal force when the gear wheel rotates therefore passes through the free oil conveying area without encountering any mechanical obstacle.

[0016] Advantages of the invention

[0017] The inventive design of the transmission advantageously allows the geometric structure of the oil distributor to be significantly simplified. The oil distributor, for example, does not need to have a catch mouth and can therefore be manufactured as a simple, single-piece part, rather than being assembled from multiple parts. Since the catch mouth of the oil distributor does not need to be positioned in the immediate vicinity of the transmission gear, contact between individual teeth of the transmission gear and the oil distributor is less likely. Manufacturing tolerances of the oil distributor can therefore be designed more generously. Likewise, additional partition walls and flow separator lips can be dispensed with. This advantageously simplifies assembly work during transmission manufacture.

[0018] A key advantage of the transmission according to the invention is that oil delivery is much more efficient than with conventional transmissions. Tests have shown that drag losses can be reduced using the transmission according to the invention. This is due to the fact that the oil quantities delivered from the oil sump in the transmission and separated from the transmission gear (coupled, for example, to the output side of the transmission) under the influence of centrifugal force do not encounter any mechanical obstacles. In the free oil delivery area, there are no partitions or separating edges that restrict oil transport or represent bottlenecks that an oil surge must first pass through. Therefore, an oil surge that separates from the transmission gear can be freely thrown through the oil delivery area, so that further oil can be more easily pumped from the oil sump.From a flow perspective, this advantageously avoids bottlenecks that the oil flow must pass through in the current technology. The oil can therefore be circulated within the transmission housing with less resistance, reducing drag losses.

[0019] Advantageous embodiments and further developments of the invention are made possible by the features contained in the dependent claims.

[0020] It is particularly advantageous if the input region of the oil delivery region is arranged on a first leg of an angle in a cross-sectional plane of the transmission running perpendicular to the axis of the transmission gear and through the transmission gear, and the output region is arranged on a second leg of the angle, wherein the first leg is defined by a connecting line between the axis of rotation of the transmission gear and the transition point between the first and second inner wall sections, and the second leg is inclined by an angle of at least 30° relative to the first leg in the direction of the oil distributor in the cross-sectional plane. The second leg can be inclined by an angle of at most 90° relative to the first leg in the direction of the oil distributor in the cross-sectional plane.

[0021] In particular, it is advantageous if the second leg is inclined by an angle between 30° and 70° relative to the first leg in the direction of the oil distributor in the cross-sectional plane.

[0022] It is particularly advantageous for the transmission to be designed such that, during transmission operation, oil detaching from the transmission gear under the influence of centrifugal force, which leaves the outlet area of ​​the free oil delivery area, impinges on the oil distributor behind the outlet area or past the oil distributor onto a deflection wall projecting inward at the end of the second inner wall section. This deflection wall can be curved such that oil impinging on the deflection wall from the free oil delivery area is deflected by the deflection wall toward the oil distributor. This deflected oil quantity can, for example, fill an oil collection basin of the oil distributor.

[0023] In the oil production area, the orientation of the trajectory of an oil surge that detaches from the transmission gear under the influence of centrifugal force depends on the rotational speed of the transmission gear. An oil surge that has already detaches from the transmission gear at a low first rotational speed of the transmission gear is, for example, thrown through the oil production area towards the outlet area along a first trajectory that runs closer to the outer circumference of the transmission gear than to the second inner wall section. This oil surge can, for example, hit the oil distributor behind the outlet area and be redirected by it. The oil quantities can flow quickly via the oil distributor's outlets to the bearings of rotating transmission components or quickly back into the oil sump.If the rotational speed of the transmission gear is increased, the angle of inclination of the trajectory of a detaching oil surge becomes increasingly steeper. An oil surge detaching from the transmission gear at a second rotational speed that is greater than a first rotational speed can therefore travel along a second trajectory that runs closer to the second inner wall section than to the outer circumference of the transmission gear, through the oil conveying region towards the exit region. At the highest rotational speed, this trajectory preferably runs along the second inner wall section. The second inner wall section can therefore advantageously be designed such that, starting from the transition point directly at the inlet region of the free oil conveying region, it initially extends away from the latter approximately tangentially to the outer circumference of the transmission gear.The second inner wall section can, for example, be straight or have a slight curve and end at the deflection wall. The oil surge conveyed along the second inner wall section preferably does not directly impact the oil distributor, but rather, viewed in the direction of gravity, hits the deflection wall behind the oil distributor. From there, the oil flow is redirected and reaches the oil distributor.

[0024] The overall advantage of this is that when the transmission gear accelerates from a standstill, the oil is quickly pumped from the transmission gear and distributed in the transmission housing without the oil transport path being restricted by narrow spots or gaps. The oil is taken up from the oil sump and thrown against gravity through the free oil delivery area towards the upper section of the transmission housing. As the speed of the transmission gear increases rapidly, the throwing path within the free oil delivery area can therefore quickly become increasingly steeper until a breaking away oil surge finally rushes along the second inner wall section to the deflection wall and from there back to the oil distributor, without this oil surge being counteracted by large quantities of oil already flowing back.

[0025] Short description of the drawings

[0026] Possible embodiments of the invention are explained below with reference to the accompanying figures. The drawings show:

[0027] Figure 1 shows a schematic cross section through a transmission according to the invention,

[0028] Figure 2 is an enlarged section of the gearbox shown in Figure 1, which schematically shows the trajectory of an oil splash at a first rotational speed of the gearbox gear,

[0029] Figure 3 is an enlarged section of the transmission shown in Figure 1, schematically illustrating the trajectory of an oil splash at a second rotational speed of the transmission gear that is greater than the first rotational speed. Embodiments of the invention

[0030] Figure 1 shows a schematic cross-section through a transmission 1 according to the invention, which is, for example, a transmission in an electric drive train of a motor vehicle, in particular in an electric battery-powered vehicle. Figure 1 shows three mutually perpendicular spatial directions x, y and z, wherein the negative y-direction corresponds to the direction of gravity. The transmission 1 comprises a transmission housing 10 made of, for example, metal. The transmission 1 has a transmission gear 2 which is rotatably mounted in the transmission housing 10 about an axis 21. In Figure 1, the transmission gear 10 rotates in a circumferential direction, for example to the right according to the arrow shown. The transmission gear 10 can be directly or indirectly in engagement with further rotating transmission parts 6, 7 which are rotatably mounted about further bearings 61, 71.

[0031] The axis 21 of the gear wheel 2 runs in the z-direction shown. The plane of Figure 1 runs in the xy-plane and shows a cross-sectional plane through the gear 1 and the gear wheel 10 in a direction perpendicular to the axis 21.

[0032] As shown in Figure 1, an oil sump 5 is located in the lower area of ​​the transmission housing 10 in Figure 1. The transmission gear 2 is partially arranged in this oil sump 5 and has an outer circumference 22. The transmission housing 10 has a first inner wall section 11, which lies opposite the outer circumference 22 of the transmission gear 2 at a constant distance. This distance creates an annular gap with a circular arc in cross section between the first inner wall section 11 and the outer circumference 22, which extends from the oil sump 5 in Figure 1 by approximately 100° to a transition point 13. The first inner wall section 11 can, however, also be much shorter than shown and extend over a considerably smaller angular range.When the gear wheel 2 rotates in the direction of the arrow shown, the gear wheel throws up oil from the oil sump 5 and transports the oil from the oil sump 5 through the annular gap between the first inner wall section 11 and the outer circumference 22 to the transition point 13.

[0033] At the transition point 13, the inner wall of the transmission housing 10 changes its curvature. Therefore, at the transition point 13, as seen in the direction of rotation of the transmission gear 2, a second inner wall section 12 adjoins the first inner wall section 11. This second inner wall section 12 initially extends, for example, tangentially to the outer circumference 22 of the transmission gear 2, so that the distance between the second inner wall section 12 and the outer circumference 22 of the transmission gear 2 continuously increases from the transition point 13 in the direction of the second inner wall section 12. In this region, a free oil delivery area 8 extends between the second inner wall section 12 and the outer circumference 22 of the transmission gear 2.This free oil delivery region 8 extends in the cross-sectional plane xy of the transmission 1 into a widening spatial region 18 from an input region 81 to an output region 82 and is laterally delimited by the second inner wall section 12 and the outer circumference 22 of the transmission gear 2. The input region 81 begins at the transition point 13. The output region 82 lies in front of an oil distributor 4, as seen in the direction of rotation of the transmission gear 2. The widening spatial region 18 is represented in Figure 1 by the dashed line border. In the cross-sectional plane xy of Figure 1, the input region 81 is arranged on a first leg 31 of an imaginary angle α and the output region 82 is arranged on the second leg 32 of this angle α. The first leg 31 is defined by a connecting line between the axis 21 of the transmission gear and the transition point 13.The second leg 32 is inclined by an angle a of at least 30° relative to the first leg 31 in the direction of the oil distributor 4 in the cross-sectional plane xy. In the illustrated embodiment, the angle a is approximately 55°. The exit area is considerably larger in cross-section than the inlet area of ​​the oil delivery area 8.

[0034] As can be seen, there are no mechanical obstacles in the free oil conveying area 8 that could hinder oil transport from the input area 81 toward the output area 82. Transmission oil, which detaches from the transmission gear 2 behind the transition point 13 during operation of the transmission 1 under the influence of centrifugal force in the direction of rotation, is propelled through the free oil conveying area 8 to the output area 82 without encountering an obstacle. Oil leaving the outlet region 82 of the free oil production region 8 largely either strikes the oil distributor 4 directly or passes the oil distributor 4 onto a deflection wall 14 projecting inwards at the end of the second inner wall section 12. The deflection wall 14 is curved in such a way that oil striking the deflection wall 14 behind the outlet region 82 of the free oil production region 8 is deflected by the deflection wall 14 in the direction of the oil distributor 4.

[0035] The oil distributor 4 can be relatively simple in design and includes, for example, a collecting basin 41 and one or more outlets 42 for draining oil. Oil that hits the oil distributor 4 is either directly redirected by it or initially collects and then flows via the outlets 42 toward the bearings 61, 71 of the rotating transmission components 6, 7.

[0036] Figures 2 and 3 schematically illustrate how, in the oil delivery region 8, the orientation of a trajectory 83, 85 of an oil surge 80, which detaches from the transmission gear 2 under the influence of centrifugal force, depends on the rotational speed of the transmission gear 2. Figure 2 initially shows that an oil surge 80 detaching from the transmission gear 2 at a first rotational speed RG1 of, for example, 206 rpm of the transmission gear 2 is propelled through the oil delivery region 8 toward the outlet region 82 along a first trajectory 83, which runs closer to the outer circumference 22 of the transmission gear 2 than to the second inner wall section 12. This oil surge strikes the oil distributor 4 behind the outlet region 82 and is redirected by it via various discharge paths 84.

[0037] If the rotational speed is increased, the course of the trajectory changes and becomes increasingly steeper. As shown in Figure 3, at a second rotational speed RG2 of, for example, 279 rpm, which is greater than a first rotational speed RG1, a surge of oil 80 detaching from the transmission gear 2 can be propelled along a second trajectory 85, which runs closer to the second inner wall section 12 than to the outer circumference 22 of the transmission gear 2, through the oil conveying region 8 in the direction of the outlet region 82. From there, the oil passes behind the outlet region through a gap between the collecting basin 41 and the inner wall of the transmission housing 10 to the deflection wall 14, which deflects the oil in the direction of the oil distributor 4, so that it collects, for example, in the collecting basin 41.From there, the oil can flow via drain paths 86, among other things, to transmission components located higher up in the transmission housing.

[0038] A combined view of the illustrations in Figures 2 and 3 reveals that when the speed of the transmission gear 2 increases, oil is propelled through the free oil conveying area 8 at varying steep trajectories. Since there are no obstacles in the free oil conveying area 8, the oil propelled along the various trajectories can always be quickly removed without a bottleneck or strong backflow hindering the detachment of the oil from the transmission gear 2 during acceleration.

Claims

Claims 1. A transmission (1), in particular a motor vehicle transmission, comprising a transmission housing (10) and at least one transmission gear (2) arranged in the transmission housing (10), which transmission gear is mounted in the transmission housing (10) for rotation about an axis (21), wherein the transmission gear (2) is partially arranged in an oil sump (5) of the transmission (1), wherein an outer circumference (22) of the transmission gear (2) partially lies opposite a first inner wall section (11) of the transmission housing at a constant distance, wherein, viewed in a direction of rotation of the transmission gear (2), a second inner wall section (12) adjoins the first inner wall section (11) at a transition point (13), wherein the distance between the outer circumference (22) of the transmission gear (2) and the second inner wall section (12) increases continuously from the transition point (13) in the direction of the second inner wall section (12),and wherein an oil distributor (4) is arranged in the transmission housing (10) such that, during operation, oil thrown up from the oil sump (5) by the transmission gear (2) is conveyed to the oil distributor (4), characterized in that a free oil conveying region (8) is formed outside the oil distributor (4) between the second inner wall section (12) and the outer circumference (22) of the transmission gear (2), wherein the free oil conveying region (8), viewed in a cross-sectional plane (xy) of the transmission (1) extending perpendicular to the axis (21) of the transmission gear (2) and through the transmission gear (2), extends into a space region (18) widening between the second inner wall section (12) and the outer circumference (22) of the transmission gear (2) from an input region (81) at the transition point (13) to an output region (82) in the direction of the oil distributor (4), wherein the free oil production area (8) is free of mechanical obstacles,which can hinder oil transport from the inlet area (81) towards the outlet area (82).

2. Transmission according to claim 1, characterized in that in the cross-sectional plane (xy) the input region (81) is arranged on a first leg (31) of an angle (α) and the output region (82) is arranged on a second leg (32) of the angle (α) and the first leg (31) is a connecting line is defined between the axis (21) and the transition point (13) and the second leg (32) is inclined by an angle (a) of at least 30° relative to the first leg (31) in the direction of the oil distributor (4) in the cross-sectional plane (xy).

3. Gearbox according to claim 1 or 2, characterized in that during operation of the gearbox (1) under the influence of centrifugal force, oil which detaches from the gear wheel (2) and leaves the outlet region (82) of the free oil conveying region (8) strikes the oil distributor (4) behind the outlet region (82) or strikes a deflection wall (14) projecting inwards at the end of the second inner wall section (12) past the oil distributor (4).

4. Transmission according to claim 3, characterized in that the deflection wall (14) is curved in such a way that oil impinging on the deflection wall (14) from the free oil conveying area (8) is deflected by the deflection wall (14) in the direction of the oil distributor (4).

5. Gearbox according to one of the preceding claims, characterized in that in the oil conveying region (8) the orientation of a throwing path (83, 85) of an oil surge (80) which detaches from the gear wheel (2) under the influence of the centrifugal force depends on the rotational speed (RG1; RG2) of the gear wheel (2).

6. Transmission according to claim 5, characterized in that an oil surge (80) detaching from the transmission gear (2) at a first rotational speed (RG1) of the transmission gear (2) is thrown along a first throwing path (83) which runs closer to the outer circumference (22) of the transmission gear (2) than to the second inner wall section (12) through the oil conveying region (8) in the direction of the output region (82), and in that an oil surge (80) detaching from the transmission gear (2) at a second rotational speed (RG2) which is greater than a first rotational speed (RG1) is thrown along a second throwing path (85) which runs closer to the second inner wall section (12) than to the outer circumference (22) of the transmission gear (2), through the oil conveying region (8) in the direction of the output region (82).

7. Transmission according to claim 6, characterized in that oil on the second throwing path (85) impinges on the deflection wall (14) behind the output region (82).

8. Transmission according to claim 2, characterized in that the second leg (32) is inclined by an angle of at most 90° relative to the first leg (31) in the direction of the oil distributor (4) in the cross-sectional plane (xy).

9. Transmission according to claim 2, characterized in that the second leg (32) is inclined by an angle between 30° and 50° relative to the first leg (31) in the direction of the oil distributor (4) in the cross-sectional plane (xy).

10. Transmission according to one of the preceding claims, characterized in that the oil distributor (4) has at least one outlet (42), wherein oil flowing out of the outlet (42) is supplied to the bearings of rotating transmission components (6, 7).

11. Electric drive for a motor vehicle with a transmission according to one of claims 1 to 10.

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