Drive arrangement and a vehicle with such a drive arrangement

Abstract

The invention relates to a drive arrangement, in particular for a vehicle, with features of claim 1 and a vehicle, in particular a motor vehicle, with at least one such drive arrangement.

Description

State of the art

[0001] The invention relates to a drive arrangement, in particular for a vehicle, having the features of claim 1, and to a vehicle, in particular a motor vehicle, having the features of the independent claim.

[0002] Commercial vehicles typically have driven rigid rear axles with a differential. Banjo axles offer the advantage that the entire axle head (including differential) can be mounted and adjusted as an assembly outside of an axle housing.

[0003] It is desirable to electrify a conventional banjo rigid axle. EP 3 630 503 B1 and JP 2023 027 454 A each disclose a banjo axle assembly with an electric motor driving the axle assembly.

[0004] The disadvantage is that implementing an electric machine in a drive arrangement requires a relatively large installation space, which is only available to a limited extent. Disclosure of the invention

[0005] According to the invention, a drive arrangement, in particular for a vehicle, is proposed, comprising an electric machine with a drive shaft and a drive gear arranged on the drive shaft in a rotationally fixed manner. The drive arrangement comprises a differential with a differential gear, wherein the differential gear is designed to be rotatable about a rotation axis. The drive arrangement comprises an idler gear which is arranged on the differential for rotation about the rotation axis. The drive gear and the idler gear are drivingly coupled to one another. It is conceivable that the drive gear and the idler gear can mesh with one another. The drive arrangement comprises a first intermediate shaft with a first gear and a second gear. The first gear and the second gear are each arranged on the first intermediate shaft in a rotationally fixed manner. The first gear and the idler gear are drivingly coupled to one another. It is conceivable that the first gear and the idler gear can mesh with one another.The second gear and the differential gear are coupled to each other. It is conceivable that the second gear and the differential gear could mesh with each other.

[0006] The idler gear can be designed as an intermediate gear. The idler gear is arranged, in particular, coaxially on the differential. The idler gear is mounted, in particular, by means of a rolling bearing (on the differential). The differential gear and / or the second gear can each be designed as a spur gear. The differential can be coupled to two output shafts. The output shafts can be arranged on opposite sides of the differential and each along the rotational axis.

[0007] In this context, a drive coupling refers to a coupling that enables torque transmission. In other words, torque can be transferred from one element to the other (or vice versa) using two elements that are coupled to each other in a drive-related manner (e.g., gears).

[0008] This allows for simple electrification of the drive system, while utilizing the available installation space as efficiently as possible. The individual (transmission) components can be arranged in multiple parts around the differential or the rotational axis.

[0009] According to a further development of the drive arrangement, the drive arrangement can comprise a second intermediate shaft with a third gear and a fourth gear. The third gear and the fourth gear can each be arranged in a rotationally fixed manner on the second intermediate shaft. The third gear and the drive gear can mesh with each other. The fourth gear and the idler gear can mesh with each other. The second intermediate shaft and / or the drive shaft (or the electric motor) can be arranged in a first region of the drive arrangement.

[0010] This allows a gear ratio to be implemented between the drive shaft (or the drive gear) and the idler gear using simple means.

[0011] According to a further development of the drive arrangement, the drive arrangement can comprise a third intermediate shaft with a fifth gear and a sixth gear. The fifth gear and the sixth gear can each be arranged on the third intermediate shaft in a rotationally fixed manner. The fifth gear and the first gear can mesh with each other. The sixth gear and the idler gear can mesh with each other. The first intermediate shaft and / or the third intermediate shaft can be arranged in a second region of the drive arrangement.

[0012] This allows a (further) gear ratio of the drive arrangement to be implemented using simple means.

[0013] The first region and the second region can be arranged opposite one another with respect to the differential. In a vehicle with such a drive arrangement, the first and second regions can be arranged one behind the other in the direction of travel of the vehicle. The first region can be arranged in front of the second region in the direction of travel of the vehicle. It is also conceivable for the second region to be arranged in front of the first region in the direction of travel of the vehicle.

[0014] According to a further development of the drive assembly, the drive assembly may comprise an axle housing. The differential and / or the differential gear may be arranged at least partially within the axle housing. The output shafts coupled to the differential may be arranged at least partially within the axle housing.

[0015] This allows the components located within the axle housing to be assembled and / or protected using simple means.

[0016] According to a further development of the drive assembly, the drive assembly can comprise a first transmission housing. The first intermediate shaft and / or the third intermediate shaft can be arranged at least partially within the first transmission housing. The first transmission housing can be connected, in particular screwed, to the axle housing.

[0017] This allows assembly and / or protection of the components arranged within the first gearbox housing to be implemented using simple means.

[0018] According to a further development of the drive assembly, the drive assembly can comprise a second transmission housing. The second intermediate shaft and / or the drive shaft (or the electric motor) can be arranged at least partially within the second transmission housing. The second transmission housing can be connected, in particular screwed, to the axle housing. The first transmission housing and the second transmission housing can, in particular, be arranged on opposite sides of the axle housing.

[0019] This allows assembly and / or protection of the components arranged within the second gearbox housing to be implemented using simple means.

[0020] According to a further development of the drive arrangement, the drive arrangement can be designed at least partially as a banjo axle. In particular, the differential, the differential gear, and the output shafts coupled to the differential can be designed as a banjo axle.

[0021] According to a further development of the drive arrangement, the drive arrangement can comprise a parking lock for interrupting torque transmission between the drive shaft and the differential gear. The parking lock can be arranged on the first gear, the second gear, the third gear, the fourth gear, the fifth gear, the sixth gear, the idler gear, the drive gear, the differential gear, the first intermediate shaft, the second intermediate shaft, and / or the third intermediate shaft.

[0022] This allows for a simple interruption of torque transmission within the drive assembly. A parking function of the drive assembly or a vehicle comprising the drive assembly can be implemented with simple means.

[0023] According to a further development of the drive arrangement, the drive shaft, the first intermediate shaft, the second intermediate shaft, the third intermediate shaft and / or the output shafts can each be oriented parallel to the axis of rotation.

[0024] This allows the drive arrangement to be implemented as compactly as possible.

[0025] According to the invention, a vehicle, in particular a motor vehicle, is proposed with a drive arrangement as described above. Regarding the advantages achievable thereby, reference is made to the relevant explanations regarding the drive arrangement. The measures described in connection with the drive arrangement and / or those explained below can be used to further configure the vehicle.

[0026] An embodiment of the invention is explained below with reference to the accompanying drawing. It shows: Fig. 1 a schematic representation of a drive arrangement.

[0027] The drive arrangement contributes to Fig. 1 as a whole the reference number 10. The drive arrangement 10 comprises an electric machine 12 with a drive shaft 14 and a drive gear 16 arranged non-rotatably on the drive shaft 12.

[0028] The drive assembly 10 includes a differential 18 with a differential gear 20. The differential gear 20 is rotatable about a rotational axis 22. The drive assembly 10 includes an idler gear 24, which is arranged on the differential 18 for rotation about the rotational axis 22. The drive gear 16 and the idler gear 24 are drivingly coupled to one another. In other words, the drive gear 16 can drive the idler gear 24 (or vice versa).

[0029] The drive assembly 10 comprises a first intermediate shaft 26 with a first gear 28 and a second gear 30. The first gear 28 and the second gear 30 are each arranged on the first intermediate shaft 26 in a rotationally fixed manner. The first gear 28 and the idler gear 24 are drivingly coupled to one another. In other words, the idler gear 24 can drive the first gear 28 (or vice versa). The second gear 30 and the differential gear 20 are drivingly coupled to one another. In this case, the second gear 30 and the differential gear 20 mesh with one another.

[0030] The drive assembly 10 comprises two output shafts 50 coupled to the differential 18. The two output shafts 50 are arranged along the rotational axis 22 and on opposite sides of the differential 18.

[0031] The drive arrangement 10 comprises an axle housing 44. The axle housing 44 is in the Fig.1 is merely indicated by dashed lines. In this case, the differential 18, the differential gear 20, and the two output shafts 50 are arranged at least partially within the axle housing 44.

[0032] The drive assembly 10 is at least partially designed as a banjo axle. In this case, the axle housing 44, along with the elements arranged therein (differential 18, differential gear 20, output shafts 50), is designed as a banjo axle (or rigid banjo axle).

[0033] The drive assembly 10 comprises a second intermediate shaft 32 with a third gear 34 and a fourth gear 36. The third gear 34 and the fourth gear 36 are each arranged on the second intermediate shaft 32 in a rotationally fixed manner. The third gear 34 and the drive gear 16 mesh with each other. The fourth gear 36 and the idler gear 24 mesh with each other.

[0034] The drive assembly 10 here comprises a third intermediate shaft 38 with a fifth gear 40 and a sixth gear 42. The fifth gear 40 and the sixth gear 42 are each arranged in a rotationally fixed manner on the third intermediate shaft 38. The fifth gear 40 and the first gear 28 mesh with each other. The sixth gear 42 and the idler gear 24 mesh with each other.

[0035] The drive arrangement 10 here comprises a first transmission housing 46. The first intermediate shaft 26 and the third intermediate shaft 38 are arranged at least partially within the first transmission housing 46.

[0036] The drive assembly 10 comprises a second transmission housing 48. The second intermediate shaft 32 and the drive shaft 14 are arranged at least partially within the second transmission housing 48. It is also conceivable that the electric machine 12 can be arranged at least partially within the second transmission housing 48.

[0037] The first transmission housing 46 and the second transmission housing 48 are each indicated only by dashed lines. The first transmission housing 46 and the second transmission housing 48 are arranged on opposite sides of the axle housing 44 and are connected to the axle housing 44, in particular by means of screws.

[0038] The drive assembly 10 may include a parking lock (not shown) for interrupting torque transmission between the input shaft 14 and the differential gear 20 (or the output shaft 50). In other words, the parking lock can prevent or interrupt torque transmission within the drive assembly.

[0039] In the present case, the drive shaft 14, the first intermediate shaft 26, the second intermediate shaft 32 and the third intermediate shaft 38 are oriented parallel to the axis of rotation 22. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 3 630 503 B1

[0003] JP 2023 027 454 A

[0003]

Claims

[1] Drive arrangement (10), in particular for a vehicle, comprising: - an electric machine (12) with a drive shaft (14) and a drive gear (16) arranged on the drive shaft (14) in a rotationally fixed manner, - a differential (18) with a differential gear (20), wherein the differential gear (20) is designed to be rotatable about an axis of rotation (22), - a loose wheel (24) which is arranged on the differential (18) so as to be rotatable about the axis of rotation (22), wherein the drive gear (16) and the idler gear (24) are drivingly coupled to one another, - a first intermediate shaft (26) with a first gear (28) and a second gear (30), wherein the first gear (28) and the second gear (30) are each arranged in a rotationally fixed manner on the first intermediate shaft (26), wherein the first gear (28) and the idler gear (24) are drivingly coupled to one another, wherein the second gear (30) and the differential gear (20) are drivingly coupled to one another, in particular meshing with one another. [2] Drive arrangement (10) according to claim 1, characterized by in that the drive arrangement (10) comprises a second intermediate shaft (32) with a third gear (34) and a fourth gear (36), wherein the third gear (34) and the fourth gear (36) are each arranged in a rotationally fixed manner on the second intermediate shaft (32), wherein the third gear (34) and the drive gear (16) mesh with one another, wherein the fourth gear (36) and the idler gear (24) mesh with one another. [3] Drive arrangement (10) according to claim 1 or 2, characterized byin that the drive arrangement (10) comprises a third intermediate shaft (38) with a fifth gear (40) and a sixth gear (42), wherein the fifth gear (40) and the sixth gear (42) are each arranged in a rotationally fixed manner on the third intermediate shaft (38), wherein the fifth gear (40) and the first gear (28) mesh with one another, wherein the sixth gear (42) and the idler gear (24) mesh with one another. [4] Drive arrangement (10) according to one of the preceding claims, characterized by that the drive arrangement (10) comprises an axle housing (44), wherein the differential (18) and / or the differential gear (20) are arranged at least partially within the axle housing (44). [5] Drive arrangement (10) according to one of the preceding claims, characterized bythat the drive arrangement (10) comprises a first gear housing (46), wherein the first intermediate shaft (26) and / or the third intermediate shaft (38) are arranged at least partially within the first gear housing (46). [6] Drive arrangement (10) according to one of the preceding claims, characterized by that the drive arrangement (10) comprises a second gear housing (48), wherein the second intermediate shaft (32) and / or the drive shaft (14) are arranged at least partially within the second gear housing (48). [7] Drive arrangement (10) according to one of the preceding claims, characterized by that the drive arrangement (10) is at least partially designed as a banjo axle. [8] Drive arrangement (10) according to one of the preceding claims, characterized by that the drive arrangement (10) comprises a parking lock for interrupting a torque transmission between the drive shaft (14) and the differential gear (20). [9] Drive arrangement (10) according to one of the preceding claims, characterized by that the drive shaft (14), the first intermediate shaft (26), the second intermediate shaft (32) and / or the third intermediate shaft (38) are each oriented parallel to the axis of rotation (22). [10] Vehicle, in particular motor vehicle, comprising at least one drive arrangement (10) according to one of the preceding claims.

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