Driving assembly, axle and vehicle

Abstract

The utility model relates to a driving assembly, an axle and a vehicle. The driving assembly comprises a first box body and a second box body, the first box body is provided with a first bearing seat, and the first bearing seat is fixedly connected with the second box body. The first box body is provided with the first bearing seat, the second box body is fixedly connected with the first bearing seat, and the bearing seat is used for mounting a bearing, so that the bearing seat generally has relatively high structural strength, is high in rigidity and is not easy to deform. In this way, the connection between the second box body and the first bearing seat is beneficial for improving the connection stability of the first box body and the second box body. And meanwhile, the NVH problem of the driving assembly can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of driving, in particular to a driving assembly, an axle and a vehicle. BACKGROUND

[0002] In the related art, a driving assembly usually comprises a reduction mechanism and a driving mechanism, and a commonly used connection manner between the reduction mechanism and the driving mechanism is to connect them by flanges at the outer edges of the driving mechanism and the reduction mechanism. This connection manner needs to occupy a large space. Meanwhile, the flanges at the outer edges are usually thin, so that their strength is low, the connection strength by the flanges is low, and deformation is easy to occur, which brings NVH (Noise-Vibration-Harshness) problems, or even damage. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present application provide a driving assembly, an axle and a vehicle, to improve the connection strength of a box included in the driving assembly, to at least partially solve the above technical problems.

[0004] In order to achieve the above-mentioned purpose, according to a first aspect of the present application, a driving assembly is provided, comprising a first box and a second box, the first box has a first bearing seat, and the first bearing seat is fixedly connected with the second box.

[0005] In some embodiments, the second box has a second bearing seat, and the second bearing seat is fixedly connected with the first box.

[0006] In some embodiments, the second box has a second bearing seat, and the second bearing seat is fixedly connected with the first bearing seat.

[0007] In some embodiments, the first box is a motor box, the second box is a reducer box, the reducer box is provided with a first input shaft and a first output shaft, the first input shaft and the first output shaft are in transmission connection and are coaxially arranged, and the first input shaft or the first output shaft is supported on the second bearing seat.

[0008] In some embodiments, the motor box is provided with a second output shaft, the second output shaft and the first input shaft are coaxially connected in transmission; and / or

[0009] The end of the second output shaft connected with the first input shaft is supported on the first bearing seat; and / or

[0010] The end of the first input shaft connected with the second output shaft is supported on the first bearing seat.

[0011] In some embodiments, one of the first input shaft and the first output shaft is a sun gear shaft, and the other is a planet carrier.

[0012] In some embodiments, the driving assembly further comprises a first connecting piece.

[0013] The first bearing seat is provided with a first connecting hole, the second box body is provided with a second matching hole, and the first connecting piece passes through the first connecting hole and the second matching hole to connect the first box body and the second box body; or,

[0014] The second bearing seat is provided with a second connecting hole, the first box body is provided with a first matching hole, and the first connecting piece passes through the second connecting hole and the first matching hole to connect the first box body and the second box body; or,

[0015] The first bearing seat is provided with a first connecting hole, the second bearing seat is provided with a second connecting hole, and the first connecting piece passes through the first connecting hole and the second connecting hole to connect the first box body and the second box body.

[0016] In some embodiments, the number of first connecting pieces is multiple, the number of first connecting holes is multiple, the multiple first connecting holes are arranged at intervals around the second output shaft, the number of second connecting holes is multiple, the multiple second connecting holes are arranged at intervals around the first input shaft, the multiple second connecting holes correspond to the multiple first connecting holes one by one, and each first connecting piece connects a first connecting hole and a second connecting hole corresponding thereto.

[0017] According to a second aspect of the present application, a drive assembly is provided.

[0018] According to a third aspect of the present application, a vehicle is provided, which comprises the drive assembly described above; and / or, comprises the axle described above.

[0019] In the drive assembly of the embodiments of the present application, the first box body has a first bearing seat, and the second box body is fixedly connected with the first bearing seat. Since the bearing seat is used for mounting a bearing, the bearing seat usually has high structural strength and large rigidity and is not easy to deform. In this way, the connection of the second box body with the first bearing seat helps to improve the connection stability of the first box body and the second box body. At the same time, it is also helpful to improve the NVH (Noise-Vibration-Harshness, noise-vibration-harshness) problem of the drive assembly.

[0020] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0022] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0023] Figure 1 This is a cross-sectional view of a drive assembly provided in an embodiment of this application;

[0024] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle;

[0025] Figure 3 This is a cross-sectional view of another drive assembly provided in an embodiment of this application;

[0026] Figure 4 yes Figure 3 Enlarged diagram of part B.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. First housing; 11. First bearing housing; 12. First bearing; 13. First positioning structure;

[0029] 2. Second housing; 21. Second bearing housing; 22. Second bearing;

[0030] 3. First input axis;

[0031] 4. First output shaft;

[0032] 5. Second output shaft;

[0033] 6. First connector. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0035] In the related art, a drive assembly usually comprises a speed reduction mechanism and a driving mechanism. The common connection mode of the speed reduction mechanism and the driving mechanism comprises connecting the housings of the speed reduction mechanism and the driving mechanism on the outside, for example, connecting through flanges. The flange is usually a disc-shaped or ring-shaped edge protruding perpendicular to the axis, generally with bolt holes, and the connection is achieved through bolt fastening. It can be seen that the flange usually protrudes from the housing and has a small thickness, and thus when the driving mechanism housing and the speed reduction mechanism housing are connected through the flange, the connection strength at the connection is low, and the connection is prone to deformation and damage. Moreover, because the flange protrudes from the housing, the flange is prone to damage in actual use scenarios, further reducing the connection stability at the connection.

[0036] According to a first aspect of the present application, the present application provides a drive assembly, please refer to Figure 1 and Figure 2 , Figure 1 is a sectional view of a drive assembly provided by an embodiment of the present application, Figure 2 is Figure 1 An embodiment of the present application provides a drive assembly, which comprises a first housing 1 and a second housing 2. The first housing 1 has a first bearing seat 11, and the first bearing seat 11 is fixedly connected with the second housing 2.

[0037] In an embodiment of the present application, the first housing 1 has a bearing seat, and the second housing 2 is fixedly connected with the first bearing seat 11. Since the bearing seat is used for mounting a bearing, and the bearing is a moving part, in order to ensure the stability of the bearing movement, for example, the rotation of a rolling bearing, the bearing seat usually has high structural strength and is not prone to deformation. Therefore, the connection mode of the first housing 1 and the second housing 2 (i.e., the connection of the second housing 2 with the bearing seat of the first housing 1) makes the connection relationship between the first housing 1 and the second housing 2 stable and firm. The specific position of the second housing 2 connected with the first bearing seat 11 can be selected according to actual requirements. In other words, by fixedly connecting the bearing seat of one of the two housings in the electric drive assembly with the other housing, the connection rigidity between the two housings is increased.

[0038] The drive assembly, for example, an electric drive assembly, usually comprises a motor and a speed reducer. The first housing 1 can be a motor housing, and the second housing 2 can be a speed reducer housing. The two housings are fixedly connected through at least one bearing seat, which reduces the tendency of relative deformation of the two housings, makes the transmission precision between the motor shaft inside the motor housing and the transmission mechanism inside the speed reducer housing better, reduces the transmission noise, improves the transmission stability, and helps to improve the NVH (Noise-Vibration-Harshness, noise-vibration-harshness) performance of the drive assembly.

[0039] In some embodiments, the input shaft and the output shaft in the transmission mechanism are arranged in parallel.

[0040] In some embodiments, the transmission mechanism comprises a planetary gear mechanism.

[0041] In some embodiments of the application, the second box body 2 has a second bearing seat 21, and the second bearing seat 21 is fixedly connected with the first box body 1.

[0042] As Figure 3 shown in the embodiment, the first box body 1 also has a bearing seat, but because the devices in the first box body 1 and the devices in the second box body 2 are subjected to different forces, the outer diameter of the first bearing 12 arranged in the first bearing seat 11 and the outer diameter of the second bearing 22 arranged in the second bearing seat 21 are inconsistent. It is also possible that the diameters of the bearings corresponding to the transmission shafts in the two box bodies are inconsistent, so that the outer diameters of the first bearing 12 and the second bearing 22 are inconsistent, and therefore the outer diameters of the first bearing seat 11 and the second bearing seat 21 are inconsistent, which is not convenient for fixedly connecting the first bearing seat 11 and the second bearing seat 21. Of course, although the sizes of the first bearing 12 and the second bearing 22 are inconsistent, the outer diameters of the first bearing seat 11 and the second bearing seat 21 can be set to be the same, but this invisibly increases the material usage of the box body corresponding to the bearing seat with a smaller outer diameter, which does not meet the current requirement of lightweight of the drive assembly. In other words, this arrangement is conducive to the lightweight of the box body, and thus is conducive to the lightweight of the drive assembly.

[0043] In some embodiments of the application, the second box body 2 has a second bearing seat 21, and the second bearing seat 21 is fixedly connected with the first bearing seat 11.

[0044] Because the bearing seat has high structural strength, connecting the first bearing seat 11 of the first box body 1 and the second bearing seat 21 of the second box body 2 can further improve the connection strength of the first box body 1 and the second box body 2, which helps to further reduce the possibility of deformation and damage of the connection between the first box body 1 and the second box body 2, thereby further ensuring the connection stability of the first box body 1 and the second box body 2, and at the same time helping to further improve the service life of the first box body 1 and the second box body 2.

[0045] Please continue to refer to Figure 1 and Figure 2 In some embodiments of the application, the first box body 1 is a motor box body, and the second box body 2 is a reducer box body. The reducer box body is provided with a first input shaft 3 and a first output shaft 4, and the first input shaft 3 and the first output shaft 4 are in transmission connection and are sleeved with each other. The first input shaft 3 or the first output shaft 4 is supported on the second bearing seat 21.

[0046] In the embodiment of the present application, the first input shaft 3 and the first output shaft 4 are drivingly connected and sleeved with each other, compared with the parallel arrangement of the first input shaft 3 and the first output shaft 4, the arrangement mode of the embodiment of the present application can reduce the space occupied by the first input shaft 3 and the first output shaft 4, thereby reducing the volume of the second box 2, which is helpful to realize the miniaturization and light weight of the drive assembly.

[0047] In some embodiments of the present application, the first input shaft 3 and the first output shaft 4 are sleeved with each other. In this way, the space occupied by the first input shaft 3 and the first output shaft 4 is further reduced, so that the drive assembly structure is compact, which is helpful to further realize the miniaturization and light weight of the drive assembly.

[0048] The reducer box usually includes a planetary gear system, and the planetary gear system includes an input shaft (i.e. the first input shaft 3 described above), a sun gear, a planet gear, a ring gear, and a planet carrier. The input shaft and the sun gear can be separately arranged or integrated (i.e. the sun gear shaft). The planet carrier is usually sleeved on the input shaft, one end of the input shaft is connected with a driving mechanism (such as a motor), and the other end is connected with the sun gear. The sun gear is engaged with the planet gear, and the planet gear is connected with the planet carrier and engaged with the ring gear. In general, the planet carrier is sleeved on the input shaft, and a second driving gear is sleeved on the planet carrier. The second driving gear is engaged with a second driven gear on one side, so that the planet carrier at the position where the second driving gear is arranged is subjected to a radial force, which will cause the planet carrier to deform radially. Since the planet carrier is sleeved on the sun gear shaft, the forces acting on different parts of the sun gear shaft in the radial direction are different in size, which will cause the sun gear shaft to deform in the radial direction, affect the connection of the sun gear shaft with the planet gear and other components, and thus cause noise during transmission, affecting the NVH performance of the drive assembly.

[0049] In some embodiments of the present application, one of the first input shaft 3 and the first output shaft 4 is a sun gear shaft, and the other is a planet carrier.

[0050] In the embodiment of the present application, the sun gear shaft or the planet carrier is supported on the second bearing seat 21, and the second bearing seat 21 is connected with the first box 1. By arranging the connection position of the first box 1 and the second box 2 close to the transmission position, the distance between the connection position and the first input shaft 3 is reduced, thereby shortening the transmission path of the deformation between the second output shaft 5 and the first input shaft 3, and making the second output shaft 5 and the first input shaft 3 deform synchronously, reducing the power transmission error, reducing the transmission noise, and helping to improve the NVH problem.

[0051] In addition, because the flange is arranged at the outer edge of the box body, the radial sizes of the driving mechanism box body and the reduction mechanism box body at the connection position are the same, and there is a possibility of expanding the box body, increasing the weight of the driving assembly, and increasing the production cost of the driving assembly. For example, the radial size of the driving mechanism is d1, the radial size of the reduction mechanism is d2, and d1 is greater than d2. In order to make the connection position of the driving mechanism box body and the reduction mechanism box body be located at the outer edge of the driving mechanism box body, the size of the connection end of the reduction mechanism box body and the driving mechanism box body is increased to d1, which undoubtedly increases the raw materials for manufacturing the reduction mechanism box body, that is, increases the production cost of manufacturing the reduction mechanism box body, and also increases the weight of the reduction mechanism box body, which does not meet the demand for lightweight.

[0052] In the embodiments of the present application, the connection mode (that is, the bearing seat connection between one of the first box body 1 and the second box body 2 and the other) makes the connection position of the first box body 1 and the second box body 2 be near the transmission position, can reduce the area of the surface of the second box body 2 connected with the first box body 1, thereby reducing the size of the connection end of the second box body 2 and the first box body 1, achieving lightweight, and also reducing the materials for manufacturing the second box body 2, thereby reducing the production cost.

[0053] In some embodiments of the present application, the motor box body is provided with a second output shaft 5, the second output shaft 5 and the first input shaft 3 are coaxially connected in transmission, and one end of the second output shaft 5 connected with the first input shaft 3 is supported on the first bearing seat 11.

[0054] In the embodiments of the present application, the motor box body is provided with a first bearing seat 11 near the side wall of the reducer box body, and one end of the second output shaft 5 is supported on the first bearing seat 11.

[0055] In some embodiments of the present application, the motor box body is provided with a second output shaft 5, the second output shaft 5 and the first input shaft 3 are coaxially connected in transmission, and one end of the second output shaft 5 connected with the first input shaft 3 is supported on the first bearing seat 11.

[0056] In the embodiments of the present application, the motor box body is provided with a first bearing seat 11 near the side wall of the reducer box body, and one end of the first input shaft 3 is supported on the first bearing seat 11.

[0057] In some embodiments of the present application, the motor box body is provided with a second output shaft 5, the second output shaft 5 and the first input shaft 3 are coaxially connected in transmission, and one end of the second output shaft 5 connected with the first input shaft 3 is supported on the first bearing seat 11.

[0058] Because the first input shaft 3 and the first output shaft 4 need to be supported on the side of the reducer box body close to the motor box body, if the common setting mode is adopted, both ends of the first input shaft 3 are supported on the reducer box body, and then two second bearing seats 21 need to be arranged on the side wall of the reducer box body close to the motor box body, which makes the structure of the reducer box body complex and the production cost increased.

[0059] In the embodiments of the present application, because the second output shaft 5 and the first input shaft 3 are coaxially connected, one end of the first input shaft 3 connected with the second output shaft 5 is supported on the first bearing seat 11, and the end of the second output shaft 5 connected with the first input shaft 3 is also supported on the same first bearing seat 11, so that the respective ends of the second output shaft 5 and the first input shaft 3 connected with each other are supported on the same first bearing seat 11. Therefore, the second output shaft 5 and the first input shaft 3 only need three bearings to be supported on the box body. This "three-bearing" scheme helps to simplify the structure of the reducer box body, thereby reducing the production cost of the reducer box body. At the same time, one supporting bearing can be saved.

[0060] In some embodiments of the present application, the part of the second output shaft 5 and the first input shaft 3 sleeved is supported on the same first bearing seat 11. One of the second output shaft 5 and the first input shaft 3 is directly supported, and the other is indirectly supported.

[0061] In some embodiments of the present application, the second output shaft 5 and the first input shaft 3 are connected through splines. The spline connection can accommodate the positional error between the second output shaft 5 and the first input shaft 3, which helps to improve the transmission accuracy and improve the NVH problem of the drive assembly.

[0062] In some embodiments of the present application, one of the second output shaft 5 and the first input shaft 3 is an internal spline, and the other is an external spline.

[0063] In some embodiments of the present application, the second output shaft 5 and the first input shaft 3 are connected through a rigid coupling.

[0064] In some embodiments of the present application, the first box body 1 has at least two first bearing seats 11, and the end of the second output shaft 5 away from the first input shaft 3 is supported on the first bearing seat 11 away from the second box body 2; the second box body 2 has at least two second bearing seats 21, and the end of the first input shaft 3 away from the second output shaft 5 is supported on the second bearing seat 21 away from the first box body 1.

[0065] In some embodiments of the present application, the first box body 1 and the second box body 2 are detachably connected. The detachable connection is conducive to the maintenance of the drive assembly.

[0066] The detachable connection includes various connection modes, such as threaded connection, key connection, buckle connection and hinge connection and the like, and in actual use scenarios, a suitable connection mode can be selected according to actual requirements. However, these connection modes are not all suitable for the present application, for example, the buckle connection, which usually relies on the elastic deformation of plastic or metal to realize the connection, and when subjected to a larger external force or frequent opening and closing, the buckle is easy to be damaged or lose elasticity, resulting in insecure connection. Or the hinge connection, the relative position between the connected objects is not fixed, which does not meet the connection requirements of the present application.

[0067] Please refer to Figures 1 to 4 In some embodiments of the present application, the drive assembly further comprises a first connecting piece 6; a first connecting hole (not shown in the figure) is formed on the first bearing seat 11, a second matching hole (not shown in the figure) is formed on the second box body 2, and the first connecting piece 6 passes through the first connecting hole and the second matching hole to connect the first box body 1 and the second box body 2; or, a second connecting hole (not shown in the figure) is formed on the second bearing seat 21, a first matching hole (not shown in the figure) is formed on the first box body 1, and the first connecting piece 6 passes through the second connecting hole and the first matching hole to connect the first box body 1 and the second box body 2; or, a first connecting hole (not shown in the figure) is formed on the first bearing seat 11, a second connecting hole (not shown in the figure) is formed on the second bearing seat 21, and the first connecting piece 6 passes through the first connecting hole and the second connecting hole to connect the first box body 1 and the second box body 2.

[0068] In the embodiments of the present application, by forming the first connecting hole on the first bearing seat 11 and the second connecting hole on the second bearing seat 21, the first box body 1 and the second box body 2 can be connected by using the first connecting hole and / or the second connecting hole and the first connecting piece 6. Compared with other connection modes such as buckle connection, the connection mode of the first box body 1 and the second box body 2 provided by the present application is not easy to be damaged and has good durability.

[0069] In some embodiments of the present application, the number of first connecting pieces 6 is multiple, the number of first connecting holes is multiple, the multiple first connecting holes are arranged at intervals around the second output shaft 5, the number of second connecting holes is multiple, the multiple second connecting holes are arranged at intervals around the first input shaft 3, the multiple second connecting holes correspond to the multiple first connecting holes one by one, and each first connecting piece 6 connects a first connecting hole and a second connecting hole corresponding thereto.

[0070] In the embodiments of the present application, the first connecting holes are arranged at intervals around the second output shaft 5, and the second connecting holes are arranged at intervals around the first input shaft 3, so that the first bearing seat 11 and / or the second bearing seat 21 are provided with the first connecting pieces 6 at multiple positions in the circumferential direction, and the connecting strength at each position in the circumferential direction is basically the same, which helps to avoid deformation caused by uneven stress at each position, and further improves the connecting strength of the first box body 1 and the second box body 2. Meanwhile, the first connecting holes and the second connecting holes are respectively arranged on the first bearing seat 11 and the second bearing seat 21, so that the first connecting holes and the second connecting holes are closer to the second output shaft 5 and the first input shaft 3 respectively, which helps to improve the transmission stability between the first input shaft 3 and the second output shaft 5.

[0071] In some embodiments of the present application, the first connecting holes are arranged at intervals around the second output shaft 5, and the second connecting holes are arranged at intervals around the first input shaft 3.

[0072] In some embodiments of the present application, the first box body 1 and the second box body 2 are connected by bolts.

[0073] In some embodiments of the present application, the second bearing seat 21 is provided with a second mounting hole (not shown in the figure), the second bearing 22 is mounted in the second mounting hole, the first box body 1 has a first positioning structure 13, and the first positioning structure 13 and the second mounting hole are positioned and matched.

[0074] In the embodiments of the present application, the first positioning structure 13 is arranged on the first box body 1, and the first positioning structure 13 and the second mounting hole are positioned and matched, which helps to improve the connecting precision of the first box body 1 and the second box body 2, and further improves the transmission precision between the transmission shafts of the first box body 1 and the second box body 2.

[0075] In some embodiments of the present application, the first positioning structure 13 includes a first stop, and the first stop is arranged concentrically with the second mounting hole and is positioned and matched with the second mounting hole.

[0076] It should be noted that the stop refers to a protrusion or groove structure arranged on one of two components when the two components are matched with each other, which is used to limit the position of the other component, plays a role of positioning and limiting, and makes the two components accurately assembled together and ensures the relative position accuracy after assembly.

[0077] In the embodiments of the present application, the first positioning structure 13 includes the first stop, and the first stop is located near the second output shaft 5, which helps to improve the connecting tightness between the first box body 1 and the second box body 2. Meanwhile, the first stop is arranged concentrically with the second mounting hole and is positioned and matched with the second mounting hole, so that the first stop and the second mounting hole form a concave-convex matched structure similar to the mortise and tenon connection, which further increases the connecting stiffness of the first box body 1 and the second box body 2.

[0078] In some embodiments of the present application, the box wall connecting the first box body 1 and the second box body 2 is provided with a first mounting hole (not shown in the figure) for the first input shaft 3 to pass through on the side close to the second box body 2, the first mounting hole is arranged on the first bearing seat 11, the first bearing 12 is arranged in the first mounting hole, and the first stop notch is arranged close to the first mounting hole.

[0079] In the embodiments of the present application, the first stop notch is arranged close to the first mounting hole, the first mounting hole itself has high machining precision and small position error, so that the position error of the first stop notch arranged close to the first mounting hole is also small, thereby the first stop notch also has high machining precision, so that when the first box body 1 and the second box body 2 are positioned and installed based on the first stop notch, the connection position is accurately positioned, and at the same time, through the connection of the mutually fitted concave-convex structures, the connection strength of the first box body 1 and the second box body 2 can also be enhanced. In addition, the stop notch structure is simple, easy to process, and has good positioning effect, so that the first positioning structure 13 is the first stop notch, which also helps to simplify the structure of the first box body 1 and reduce the steps of manufacturing the first box body 1, thereby reducing the cost.

[0080] In some embodiments of the present application, the first stop notch is arranged on the periphery of the first mounting hole.

[0081] In the embodiments of the present application, the connection precision of the first box body 1 and the second box body 2 can be improved.

[0082] In some embodiments of the present application, the first stop notch is a convex stop notch.

[0083] In the embodiments of the present application, the first stop notch is arranged on the side of the first box body 1 connected with the second box body 2, and the stop notch usually exists in pairs, that is, among two connected objects, a convex stop notch is arranged on one of them, and a concave stop notch is arranged on the corresponding position of the other one, so that the two objects can be positioned and connected by using the concave stop notch and the convex stop notch. In the present application, the second bearing seat 21 of the second box body 2 is located inside the second box body 2, and it is difficult to arrange a convex stop notch inside the second box body 2, which is time-consuming and laborious. Therefore, the first stop notch is arranged as a convex stop notch in the present application, which can reduce the difficulty of machining the stop notch, thereby helping to reduce the manufacturing cost.

[0084] Through the above technical solution, one of the first box body 1 and the second box body 2 is connected with the bearing seat of the other box body, and the bearing seat is used for installing the bearing, so the structural strength of the bearing seat is usually high and the rigidity is large and not easy to deform. In this way, the connection relationship of the first box body 1 and the second box body 2 is stable. In addition, when the bearing seat of the first box body 1 and the bearing seat of the second box body 2 are connected, it is helpful to further improve the connection strength of the first box body 1 and the second box body 2. It is also helpful to improve the NVH performance of the drive assembly.

[0085] According to a second aspect of the present application, a vehicle is provided, comprising the drive assembly as described above. The vehicle has all the beneficial effects of the drive assembly described above, which will not be repeated here.

[0086] According to a third aspect of the present application, a vehicle is provided, comprising the drive assembly as described above; and / or, the vehicle axle as described above. The vehicle has all the beneficial effects of the drive assembly and / or vehicle axle described above, which will not be repeated here.

[0087] The vehicle can be a fuel automobile, a plug-in hybrid electric vehicle, a new energy vehicle, etc., which is not specifically limited in the present application.

[0088] In the description of the present application, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0089] 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.

[0090] The embodiments, implementation manners and related technical features of the present application can be combined, replaced with each other without conflict.

[0091] 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 without departing from the technical solution of the present application and according to the technical essence of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A drive assembly characterized by, The first box body has a first bearing seat, and the second box body is fixedly connected with the first bearing seat.

2. The drive assembly of claim 1, wherein, The second box body has a second bearing seat, and the first bearing seat is fixedly connected with the second bearing seat.

3. The drive assembly of claim 2, wherein, The second box body has a second bearing seat, and the first bearing seat is fixedly connected with the second bearing seat.

4. Drive assembly according to claim 2 or 3, characterized in that The first box body is a motor box body, the second box body is a reducer box body, the reducer box body is internally provided with a first input shaft and a first output shaft, the first input shaft and the first output shaft are in transmission connection and are sleeved with each other, and the first input shaft or the first output shaft is supported on the second bearing seat.

5. The drive assembly of claim 4, wherein, One of the first input shaft and the first output shaft is a sun gear shaft, and the other is a planet carrier.

6. The drive assembly of claim 4, wherein, The motor box body is internally provided with a second output shaft, the second output shaft and the first input shaft are coaxially connected in transmission; One end of the second output shaft connected with the first input shaft is supported on the first bearing seat; and / or, One end of the first input shaft connected with the second output shaft is supported on the first bearing seat.

7. The drive assembly of claim 6, wherein, The drive assembly further comprises a first connecting piece; The first bearing seat is provided with a first connecting hole, the second box body is provided with a second matching hole, and the first connecting piece passes through the first connecting hole and the second matching hole to connect the first box body and the second box body; or, The second bearing seat is provided with a second connecting hole, the first box body is provided with a first matching hole, and the first connecting piece passes through the second connecting hole and the first matching hole to connect the first box body and the second box body; or, The first bearing seat is provided with a first connecting hole, the second bearing seat is provided with a second connecting hole, and the first connecting piece passes through the first connecting hole and the second connecting hole to connect the first box body and the second box body.

8. The drive assembly of claim 7, wherein, The number of the first connecting pieces is multiple, the number of the first connecting holes is multiple, multiple first connecting holes are arranged at intervals around the second output shaft, the number of the second connecting holes is multiple, multiple second connecting holes are arranged at intervals around the first input shaft, multiple second connecting holes correspond to multiple first connecting holes one by one, and each first connecting piece connects the first connecting hole and the corresponding second connecting hole.

9. An axle characterized in that, The drive assembly comprises the drive assembly according to any one of claims 1 to 8.

10. A vehicle characterized by comprising: The drive assembly comprises the drive assembly according to any one of claims 1 to 8; and / or, the axle comprises the axle according to claim 9.

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