Differential transmission device, drive axle and vehicle

Abstract

A vehicle, comprising a differential transmission device or a drive axle. The differential transmission device comprises: a differential case capable of rotating about a differential axis under the action of a driving torque; and at least two support bearings respectively coupled to the differential case so as to provide support for the differential case at different positions in the axial direction of the differential axis.

Description

Differential transmission device, drive axle and vehicle

[0001] The present application claims priority to the Chinese patent publication with the publication number 202422019312.9, the title of which is “Differential transmission device, drive axle and vehicle”, filed on August 19, 2024, in the China Patent Office, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to, but is not limited to, the differential technology field, in particular to a differential transmission device, a drive axle and a vehicle. BACKGROUND

[0003] As an important component in a vehicle, a differential is mainly used to meet the requirement that the rotational speeds of the wheels on both sides of the vehicle are different when the vehicle turns.

[0004] In the related art, the housing of the differential is supported by a single bearing. However, due to the requirement of the load to be borne, the size of the single bearing is large, which limits the rotational speed that can be borne by the single bearing and easily generates noise. SUMMARY

[0005] The embodiments of the present application provide a differential transmission device, which improves the rotational speed that can be borne by the differential transmission device and reduces noise, to at least partially solve the above technical problems.

[0006] According to a first aspect of the present application, a differential transmission device is provided, comprising:

[0007] a differential housing, rotatable about a differential axis under the action of a driving torque; and

[0008] at least two support bearings, respectively coupled to the differential housing to provide support for the differential housing at different positions in the axial direction of the differential axis.

[0009] In some embodiments of the present application, the differential transmission device comprises a planetary gear, which is rotatable about a planetary axis relative to the differential housing;

[0010] wherein, in the axial direction of the differential axis, the planetary axis is located between the two support bearings.

[0011] In some embodiments of the present application, in the axial direction of the differential axis, the planetary gear is located between the two support bearings.

[0012] In some embodiments of the present application, the differential transmission device further comprises:

[0013] an output gear meshing with the planetary gear; and

[0014] an output bearing sleeved on the output gear.

[0015] wherein, in the axial direction of the differential axis, at least part of the output bearing is disposed between the output gear and the differential housing.

[0016] In some embodiments of the present application, in the axial direction of the differential axis, a spacing between at least part of the support bearing and the planetary axis is greater than a spacing between the output bearing and the planetary axis.

[0017] In some embodiments of the present application, in the axial direction of the differential axis, at least part of the support bearing and the output bearing are located at the same axial position.

[0018] In some embodiments of the present application, the differential housing further has:

[0019] a connection portion for connecting a driving device to receive a driving torque output by the driving device;

[0020] wherein, in the axial direction of the differential axis, at least part of the support bearing is located between the connection portion and the output bearing.

[0021] In some embodiments of the present application, the support bearing is sleeved on the differential housing, and the differential housing has a limiting boss abutting against the support bearing in the axial direction of the differential axis.

[0022] In some embodiments of the present application, the differential housing has:

[0023] an inner space, wherein the planetary gear and the output gear are located in the inner space;

[0024] an oil inlet penetrating through the differential housing to connect the inner space with the outside.

[0025] In some embodiments of the present application, the differential housing comprises a first housing and a second housing, and the first housing and the second housing enclose the inner space, and the first housing and the second housing are both provided with the oil inlet.

[0026] In some embodiments of the present application, the differential transmission further comprises:

[0027] a retaining member having a plurality of planetary shaft portions;

[0028] wherein the planetary shaft portions are fixedly connected to the differential housing, and the planetary gear is rotatably connected to the planetary shaft portions; and in the circumferential direction of the differential axis, the planetary shaft portions are disposed at different positions.

[0029] According to a second aspect of the present application, a drive axle is provided, comprising:

[0030] The differential transmission device as described above;

[0031] The driving device is used for outputting a driving torque;

[0032] The axle housing has a mounting space;

[0033] The differential transmission device is arranged in the mounting space.

[0034] In some embodiments of the present application, the axle housing has or is rotationally connected with:

[0035] The mounting body is used for fixing the support bearing;

[0036] The support bearing is located between the mounting body and the differential housing in the radial direction of the differential axis;

[0037] The mounting body has a limiting flange, which abuts against the support bearing in the axial direction of the differential axis.

[0038] In some embodiments of the present application, the axle housing is formed with a clamping groove surrounding the differential axis; and the drive axle comprises:

[0039] The retaining ring is at least partially embedded in the clamping groove;

[0040] The retaining ring abuts against the mounting body in the axial direction of the differential axis.

[0041] According to a third aspect of the present application, a vehicle is also provided, which comprises the drive axle as described above.

[0042] The present application has the beneficial effect of providing a differential transmission device, a drive axle and a vehicle, which can improve the rotational speed that can be supported by providing support to the differential housing through two support bearings.

[0043] More specifically, some embodiments of the present application can have the following specific beneficial effects:

[0044] By arranging two support bearings to provide support to the differential housing at different positions in the axial direction of the differential axis, the size of a single support bearing can be reduced, thereby improving the rotational speed that can be supported by the support bearing and reducing the noise of the support bearing.

[0045] Meanwhile, by providing support to the differential housing through two support bearings, the stability of the differential housing can be improved, thereby improving the smoothness of the operation of the differential transmission device.

[0046] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0048] For a more complete understanding of the present application and its advantages, the following description needs to be taken in conjunction with the drawings, in which the same reference numerals in the following description represent the same parts.

[0049] Fig. 1 is a schematic diagram of the overall structure of a differential transmission device provided in an exemplary embodiment of the present application;

[0050] Fig. 2 is a cross-sectional view of the differential transmission device provided in an exemplary embodiment of the present application;

[0051] Fig. 3 is a schematic diagram of the overall structure of a drive axle provided in an exemplary embodiment of the present application;

[0052] Fig. 4 is a cross-sectional view of the drive axle provided in an exemplary embodiment of the present application;

[0053] Fig. 5 is a cross-sectional view of a part of the drive axle provided in an exemplary embodiment of the present application;

[0054] Fig. 6 is an enlarged schematic diagram of part A in Fig. 5;

[0055] Fig. 7 is an enlarged schematic diagram of part B in Fig. 5;

[0056] Fig. 8 is an enlarged schematic diagram of part C in Fig. 5.

[0057] Reference Signs: 100, differential transmission device; 110, differential housing; 110a, connecting portion; 110b, limiting boss; 110c, inner space of housing; 110d, oil inlet; 111, first housing; 112, second housing; 121, planetary gear; 122, output gear; 123, support bearing; 124, output bearing; 130, retaining member; 131, planetary shaft portion; C1, differential axis; C2, planetary axis; 10, drive axle; 210, driving device; 211, output shaft; 220, axle housing; 220a, mounting space; 220b, clamping groove; 230, mounting body; 231, limiting flange; 232, end face; 230a, limiting groove; 240, retaining ring; 251, first differential half shaft; 252, second differential half shaft; 260, speed reduction mechanism. DETAILED DESCRIPTION

[0058] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0059] According to a first aspect of the present application, with reference to FIG. 1 and FIG. 2, the present application provides a differential transmission device 100, comprising: a differential housing 110 and a support bearing 123.

[0060] The differential housing 110 can rotate around a differential axis C1 under the action of a driving torque; the driving torque can be provided by a driving motor or an engine.

[0061] The support bearing 123 is provided with two, and the two support bearings 123 are respectively combined to the differential housing 110 to provide support for the differential housing 110 at different positions in the axial direction of the differential axis C1.

[0062] The "combination" of the present application can be understood as a fixed mode achieved by welding, detachable connection or interference fit, etc.

[0063] Of course, the number of support bearings 123 can also be greater than two, for example, the support bearings 123 are provided with two groups, and the two groups of support bearings 123 are respectively combined to the differential housing 110 to provide support for the differential housing 110 at different positions in the axial direction of the differential axis C1, wherein each group contains at least two support bearings.

[0064] Through the above technical solution, by providing two support bearings 123, the differential housing 110 is supported at different positions in the axial direction of the differential axis C1, so that the size of a single support bearing 123 can be reduced, thereby improving the rotation speed that the support bearing 123 can withstand and reducing the noise of the support bearing 123.

[0065] At the same time, by providing support for the differential housing 110 by two support bearings 123, the stability of the differential housing 110 can be improved, thereby improving the smoothness of the operation of the differential transmission device 100.

[0066] In some embodiments, with reference to FIG. 1 and FIG. 2, the differential transmission device comprises a planetary gear 121, which can rotate around a planetary axis C2 relative to the differential housing 110. Wherein, in the axial direction of the differential axis C1, the planetary axis C2 is located between the two support bearings 123.

[0067] Specifically, the planetary gear 121 can be rotatably connected to the differential housing 110, and the planetary axis C2 is perpendicular to the differential axis C1.

[0068] With such an arrangement, by limiting the positions of the two support bearings 123 relative to the planetary axis C2, the two support bearings 123 can stably support the differential housing 110.

[0069] In some embodiments, referring to FIGS. 1 and 2, the planetary gear 121 is located between the two support bearings 123 in the axial direction of the differential axis C1. It can be understood that the distance between the two support bearings 123 in the axial direction of the differential axis C1 is greater than the diameter of the planetary gear 121.

[0070] With such an arrangement, by limiting the positional relationship of the two support bearings 123, the differential housing 110 can be more stably supported.

[0071] In some embodiments, referring to FIGS. 1 and 2, the differential transmission 100 further comprises an output gear 122 and an output bearing 124.

[0072] The output gear 122 is rotatably connected to the differential housing 110, and the output gear 122 is engaged with the planetary gear 121. The output gear 122 is provided with two, and the two output gears 122 are used to connect a differential half shaft respectively.

[0073] The differential housing 110 drives the planetary gear 121 to revolve around the differential axis C1, and then drives the output gear 122 to revolve around the differential axis C1 through the engagement of the output gear 122 and the planetary gear 121. At the same time, since the planetary gear 121 can rotate relative to the differential housing 110, the two output gears 122 can form a speed difference.

[0074] The output bearing 124 is sleeved on the output gear 122, and at least part of the output bearing 124 is arranged between the output gear 122 and the differential housing 110 in the axial direction of the differential axis C1. The output bearing 124 is used to reduce the friction and wear between the output gear 122 and the differential housing 110.

[0075] As an optional arrangement, the output bearing 124 adopts a sliding bearing made of wear-resistant material. The sliding bearing can disperse load and provide a larger contact area, thereby bearing a higher load. Specifically, the sliding bearing is a brass bearing.

[0076] In some embodiments, referring to FIGS. 1 and 2, in the axial direction of the differential axis C1, the distance D1 between at least part of the support bearing 123 and the planetary axis C2 is greater than the distance D2 between the output bearing 124 and the planetary axis C2.

[0077] It can be understood that the distance between the two support bearings 123 is greater than the distance between the two output bearings 124, that is, the load bearing position of the output bearing 124 is located between the two support bearings 123.

[0078] With such a scheme, by defining the positional relationship of the support bearing 123 and the output bearing 124, the load-carrying capacity of the support bearing 123 is improved, the stability of the differential housing 110 is improved, and deformation and vibration are reduced.

[0079] In some embodiments, referring to FIGS. 1 and 2, at least part of the support bearing 123 is located at the same axial position as the output bearing 124 in the axial direction of the differential axis C1. It can be understood that, in the radial direction of the differential axis C1, part of the support bearing 123, the differential housing 110, the output bearing 124, and the output gear 122 are stacked.

[0080] With such a scheme, when the output gear 122 rotates relative to the differential gear, the output bearing 124 bears a relatively large stress, and at the same time, part of the differential housing 110 cooperating with the output bearing 124 also bears a relatively large stress. The present application defines the position of the support bearing 123 and the output bearing 124, so that the support bearing 123 can constrain the position where the stress is large, reduce deformation and vibration, and the structure is compact, reducing the axial installation space 220a.

[0081] In some embodiments, referring to FIGS. 1 and 2, the differential housing 110 further has a connecting portion 110a.

[0082] The connecting portion 110a is used to connect the driving device 210 to receive the driving torque output by the driving device 210. At least part of the support bearing 123 is located between the connecting portion 110a and the output bearing 124 in the axial direction of the differential axis C1.

[0083] Exemplarily, the connecting portion 110a is connected with the driving device 210, part of the support bearing 123 is located between the connecting portion 110a and the output bearing 124, and another part of the support bearing 123 is located at the same axial position as the connecting portion 110a.

[0084] With such a scheme, since the connecting portion 110a bears a rotating force and there is a distribution of shear stress, by defining that at least part of the support bearing 123 is located between the connecting portion 110a and the output bearing 124, the constraint on the connecting portion 110a can be increased, deformation and vibration are reduced, and the stress distribution on the differential housing 110 can be balanced.

[0085] In some embodiments of the present application, the connecting portion 110a is provided with a spline, a keyway, or a shaft coupling, or other structures that can achieve power transmission.

[0086] In some embodiments, referring to FIGS. 1 and 2, the support bearing 123 is sleeved on the differential housing 110, the differential housing 110 has a limiting boss 110b, and the limiting boss 110b abuts against the support bearing 123 in the axial direction of the differential axis C1.

[0087] With such a scheme, by virtue of the setting of the limiting boss 110b, the support bearing 123 is limited in the axial direction of the differential axis C1, facilitating assembly of the support bearing 123.

[0088] As an optional scheme, the support bearing 123 is a sliding bearing, and the support bearing 123 includes an inner ring, an outer ring, and rolling elements, the rolling elements transmit load between the inner ring and the outer ring through rolling motion and reduce sliding friction; the inner ring is rotationally connected with the differential housing 110, for example, the inner ring is keyed or interference-fitted with the differential housing 110, so that the inner ring rotates synchronously with the differential housing 110. At the same time, the inner ring of the support bearing 123 abuts against the limiting boss 110b.

[0089] In some embodiments, referring to FIGS. 1 and 2, the differential housing 110 has a housing inner space 110c and an oil inlet 110d.

[0090] The planetary gear 121 and the output gear 122 are both located in the housing inner space 110c, and are protected by the differential housing 110. The oil inlet 110d penetrates through the differential housing 110 to communicate the housing inner space 110c with the outside, facilitating the entry and exit of lubricating oil into the housing inner space 110c, and improving the heat dissipation effect and lubrication effect of the differential transmission device 100.

[0091] As an optional scheme, the oil inlet 110d is provided in multiple, and the multiple oil inlets 110d are arranged at intervals in the circumferential direction of the differential axis C1, so that the lubricating oil enters and exits the housing inner space 110c uniformly in the circumferential direction, further improving the heat dissipation effect and lubrication effect.

[0092] In some embodiments, referring to FIG. 1, the differential housing 110 includes a first housing 111 and a second housing 112, and the first housing 111 and the second housing 112 jointly enclose the housing inner space 110c, and the first housing 111 and the second housing 112 are both provided with the oil inlet 110d. By virtue of the first housing 111 and the second housing 112, the planetary gear 121 and the output gear 122 inside the differential housing 110 are facilitated to be installed and maintained, and compared with manufacturing a whole housing, the processing difficulty and cost are reduced.

[0093] Exemplarily, the first housing 111 and the second housing 112 are fixed by multiple fasteners (e.g., bolts).

[0094] In some embodiments, referring to FIGS. 1 and 2, the differential transmission device 100 further includes a retaining member 130.

[0095] The retainer 130 has a plurality of planetary shaft portions 131, which are respectively fixedly connected to the differential housing 110, and the planetary gear 121 is rotationally connected to the planetary shaft portion 131 and is supported by the planetary shaft portion 131. The planetary shaft portions 131 are arranged at different positions in the circumferential direction of the differential axis C1.

[0096] As an optional solution, the retainer 130 adopts a cross shaft, that is, has four planetary shaft portions 131, and correspondingly, the planetary gear 121 is provided with four planetary gears. By adopting the cross shaft arrangement of the retainer 130, that is, the four planetary gears 121 rotate around the retainer 130, the differential transmission device 100 has better stability and lower noise in the high-speed state.

[0097] According to a second aspect of the present application, referring to FIGS. 3 and 4, a drive axle 10 is provided, which includes the differential transmission device 100 described above.

[0098] The drive axle 10 further includes a driving device 210 and an axle housing 220. The driving device 210 is configured to output a driving torque, and the axle housing 220 has a mounting space 220a, wherein the differential transmission device 100 is arranged in the mounting space 220a.

[0099] In some embodiments of the present application, the driving device 210 adopts an electric motor, and the output shaft 211 of the driving device 210 is rotationally connected to the engaging portion 110a of the differential housing 110.

[0100] The differential of the present application is supported by two support bearings 123. According to experiments, the limit speed of the support bearing 123 can reach 8500 rpm, which has better performance in noise and fatigue resistance. In the current real vehicle test, when the motor runs at 5300 rpm, the differential transmission device 100 has no noise and runs smoothly, and the support bearing 123 has no abnormal sound after 1 hour of continuous test.

[0101] In some embodiments, referring to FIGS. 4 to 6, the axle housing 220 has or is rotationally connected to a mounting body 230.

[0102] The mounting body 230 is configured to fix the support bearing 123, and in the radial direction of the differential axis C1, the support bearing 123 is located between the mounting body 230 and the differential housing 110. The mounting body 230 has a limiting flange 231, which abuts against the support bearing 123 in the axial direction of the differential axis C1.

[0103] For example, the outer ring of the support bearing 123 is rotationally connected to the mounting body 230, for example, is keyed or interference-fitted to the mounting body 230, so that the outer ring is fixed to the mounting body 230 and further fixed to the axle housing 220. At the same time, the outer ring of the support bearing 123 abuts against the limiting flange 231.

[0104] With such a scheme, the support bearing 123 is limited in the axial direction of the differential axis C1 by the limiting flange 231, facilitating assembly of the support bearing 123.

[0105] In some embodiments, referring to FIGS. 5, 7 and 8, the axle housing 220 is formed with a clamping groove 220b around the differential axis C1. Specifically, the clamping groove 220b is formed on the side wall of the mounting space 220a.

[0106] The drive axle 10 further comprises a retaining ring 240. The retaining ring 240 is at least partially embedded in the clamping groove 220b. In the axial direction of the differential axis C1, the retaining ring 240 abuts against the mounting body 230. In this way, the mounting body 230 is limited in the axial direction of the differential axis C1, avoiding movement of the mounting body 230 relative to the axle housing 220.

[0107] As an example, referring to FIG. 7, the retaining ring 240 can abut against the end face 232 of the mounting body 230, thereby limiting the mounting body 230.

[0108] As another example, referring to FIGS. 4 and 5, the mounting body 230 is formed with a limiting groove 230a, and another part of the retaining ring 240 is embedded in the limiting groove 230a, thereby limiting the mounting body 230.

[0109] In some embodiments, referring to FIGS. 5, 7 and 8, the axle housing 220 is fixedly connected with the drive device 210. The drive axle 10 further comprises a first differential half shaft 251, a second differential half shaft 252 and two reduction mechanisms 260. One end of the first differential half shaft 251 is rotationally connected with one of the output gears 122, and the other end is connected to one of the reduction mechanisms 260. One end of the second differential half shaft 252 is rotationally connected with the other output gear 122, and the other end is connected to the other reduction mechanism 260 through the output shaft 211 of the drive motor.

[0110] The working process of the drive axle 10 is described exemplarily as follows: first, the driving torque is output from the output shaft 211 of the drive device 210 to the differential housing, and the power is transmitted through the differential housing, the retainer 130, the planetary gear 121 to the differential gear, and finally the power is output by the first differential half shaft 251 and the second differential half shaft 252 to the corresponding reduction mechanisms 260.

[0111] According to a third aspect of the present application, a vehicle is provided, which comprises the above-mentioned drive axle 10, and has all the beneficial effects of the above-mentioned drive axle 10, which will not be described herein again.

[0112] In the description of the application, the terms "first", "second", etc. are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0113] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0114] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0115] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment in accordance with the technical essence of the present application without departing from the technical solution content of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A differential transmission (100), comprising: a differential housing (110) rotatable about a differential axis (C1) under the action of a driving torque; and at least two support bearings (123) coupled to the differential housing (110) to provide support for the differential housing (110) at different positions in the axial direction of the differential axis (C1). The differential transmission (100) comprises a planetary gear (121) rotatable about a planetary axis (C2) relative to the differential housing (110); 2. The differential gear device (100) according to claim 1, wherein wherein, in the axial direction of the differential axis (C1), the planetary axis (C2) is located between the two support bearings (123). In the axial direction of the differential axis (C1), the planetary gear (121) is located between the two support bearings (123).

3. The differential gear device (100) according to claim 2, wherein The differential transmission (100) further comprises:

4. The differential gear device (100) according to claim 2 or 3, wherein an output gear (122) engaged with the planetary gear (121); an output bearing (124) sleeved on the output gear (122); wherein, in the axial direction of the differential axis (C1), at least part of the output bearing (124) is arranged between the output gear (122) and the differential housing (110). In the axial direction of the differential axis (C1), the distance between at least part of the support bearings (123) and the planetary axis (C2) is greater than the distance between the output bearing (124) and the planetary axis (C2).

5. The differential gear device (100) according to claim 4, wherein In the axial direction of the differential axis (C1), at least part of the support bearings (123) and the output bearing (124) are located at the same axial position.

6. The differential gear device (100) according to claim 5, wherein The differential housing (110) further has:

7. The differential gear device (100) according to claim 5 or 6, wherein an engaging portion (110a) for connecting a driving device (210) to receive a driving torque output by the driving device (210); wherein, in the axial direction of the differential axis (C1), at least part of the support bearings (123) are located between the engaging portion (110a) and the output bearing (124). The support bearings (123) are sleeved on the differential housing (110), and the differential housing (110) has a limiting boss (110b) abutting against the support bearings (123) in the axial direction of the differential axis (C1).

8. The differential gear device (100) according to any one of claims 1 to 7, wherein The differential housing (110) has:

9. The differential gear device (100) according to any one of claims 4 to 7, wherein an inner space (110c) in which the planetary gear (121) and the output gear (122) are located; an oil inlet (110d) penetrating through the differential housing (110) to connect the inner space (110c) with the outside. The differential housing (110) comprises a first housing (111) and a second housing (112) enclosing the inner space (110c), and the first housing (111) and the second housing (112) are both provided with the oil inlet (110d).

10. The differential gear device (100) according to claim 9, wherein The differential transmission (100) further comprises:

11. The differential gear device (100) according to any one of claims 2 to 7, wherein ​ A retaining member (130) has a plurality of planetary shaft portions (131); The planetary shaft portions (131) are fixedly connected to the differential housing (110), and the planetary gears (121) are rotationally connected to the planetary shaft portions (131); and the planetary shaft portions (131) are arranged at different positions in the circumferential direction of the differential axis (C1).

12. A drive axle (10) comprising: The differential transmission (100) according to any one of claims 1 to 11; A driving device (210) for outputting a driving torque; An axle housing (220) having a mounting space (220a); The differential transmission (100) is arranged in the mounting space (220a).

13. The drive axle (10) of claim 12, wherein, The axle housing (220) has or is rotationally connected with: A mounting body (230) for fixing the support bearing (123); In the radial direction of the differential axis (C1), the support bearing (123) is located between the mounting body (230) and the differential housing (110); The mounting body (230) has a limiting flange (231) which abuts against the support bearing (123) in the axial direction of the differential axis (C1).

14. The drive axle (10) of claim 13, wherein, The axle housing (220) is formed with a clamping groove (220b) surrounding the differential axis (C1); and the drive axle (10) comprises: A retaining ring (240) which is at least partially embedded in the clamping groove (220b); In the axial direction of the differential axis (C1), the retaining ring (240) abuts against the mounting body (230).

15. A vehicle comprising the differential transmission (100) according to any one of claims 1 to 11 or the drive axle (10) according to any one of claims 12 to 14.

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