Driving assembly, driving system and automobile

Abstract

The utility model provides a driving assembly, a driving system and an automobile. The driving assembly comprises an input shaft, a motor shaft and a first bearing. A first oil guide channel arranged in the axial direction and a first oil guide hole formed in the radial direction are formed in the input shaft; the first end of the motor shaft is connected with the second end of the input shaft in a nested mode, and a second oil guide hole is formed in the motor shaft and communicated with the first oil guide hole. The first bearing is arranged at the nesting position of the motor shaft and the input shaft in a sleeving mode and communicates with the first oil guide channel through the first oil guide hole and the second oil guide hole. According to the utility model, the first oil guide channel, the first oil guide hole and the second oil guide hole are matched to form splashing type lubrication, so that lubricating oil can be thrown to the spline for lubrication, the first bearing is lubricated, the arrangement difficulty of a driving assembly and the cost of parts are reduced, the abrasion resistance of the spline and the lubrication of the bearing are effectively ensured, the abrasion is smaller during working, and the reliability is extremely high.

Description

Technical Field

[0001] The utility model belongs to the technical field of drive assemblies, and in particular relates to a drive assembly, a drive system and a car. Background Art

[0002] In order to improve the wear resistance and bearing lubricity of the connection between the input shaft and the motor shaft in different modes such as pure electric same-speed forward / braking, pure electric differential turning, etc., the connection between the input shaft and the motor shaft and the bearing position of the distributed electric drive system vehicle require a certain lubricating oil protection, thereby increasing the life of the parts.

[0003] There is no good lubrication solution for the connection between the input shaft and the motor shaft and the bearing. Currently, the international community adopts a forced lubrication solution. This layout requires a specially designed oil pipe to supply oil through an oil pump, which makes the internal structure of the drive assembly complex and the cost higher. Utility Model Content

[0004] The utility model provides a driving assembly, a driving system and a car to solve the problem in the prior art that there is no good lubrication solution for the connection position between the input shaft and the motor shaft and the bearing position.

[0005] A drive assembly includes an input shaft, a motor shaft and a first bearing;

[0006] The input shaft is provided with a first oil guide channel arranged in the axial direction and a first oil guide hole arranged in the radial direction;

[0007] The first end of the motor shaft is nested with the second end of the input shaft, and a second oil guide hole is provided on the motor shaft, and the second oil guide hole is communicated with the first oil guide hole;

[0008] The first bearing sleeve is arranged at the nested position of the motor shaft and the input shaft, and the first bearing is communicated with the first oil guide channel through the first oil guide hole and the second oil guide hole.

[0009] Preferably, two limiting protrusions extend from the outer side of the input shaft in the radial direction, and the two limiting protrusions cooperate with the input shaft to form an accommodating groove, and the first oil guide hole is arranged in the accommodating groove.

[0010] Preferably, the second end of the input shaft is connected to the first end of the motor shaft via a spline at a position where they meet; a guide groove is provided on each of the limiting protrusions; and the guide groove is used to connect the spline and the accommodating groove.

[0011] Preferably, the drive assembly further comprises a first housing, a second housing and a second bearing;

[0012] The first bearing and the input shaft are installed in the first housing, the first end of the input shaft is connected to the first housing through the second bearing, and the second end of the input shaft is connected to the first housing through the first bearing; the second housing is installed on the first housing and is clearance-matched with the end face of the second bearing.

[0013] Preferably, the drive assembly further comprises an oil guide nozzle, which is installed in the first end of the input shaft and connected to the second housing;

[0014] A second oil guiding passage is provided in the oil guiding nozzle, and the second oil guiding passage is communicated with the first oil guiding passage.

[0015] Preferably, the oil guide nozzle comprises a connecting column and a limiting plate extending radially from one end of the connecting column along the connecting column;

[0016] The connecting column is inserted into the first end of the input shaft, and the limiting plate is interference-fitted with the second housing;

[0017] The second oil guide channel is arranged in the connecting column.

[0018] Preferably, the drive assembly further comprises a clamping bolt; the clamping bolt is disposed between the oil guide nozzle and the input shaft and is used to clamp the second bearing.

[0019] Preferably, the drive assembly further includes a motor rotor, a motor resolver and a compression bushing;

[0020] The motor rotor, the motor resolver and the clamping bushing are sequentially sleeved on the motor shaft;

[0021] There is a gap between the end surface of the motor resolver and the end surface of the first bearing.

[0022] A drive system comprises a third housing and two of the drive assemblies;

[0023] The two ends of the third housing are respectively installed with a driving assembly.

[0024] A car comprises the driving system.

[0025] The utility model comprises an input shaft, a motor shaft and a first bearing; the first end of the motor shaft is nested and connected with the second end of the input shaft, and the first bearing is sleeved on the nested position of the motor shaft and the input shaft, that is, the first end of the motor shaft is sleeved on the second end of the input shaft, and the second end of the input shaft is connected with the first end of the motor shaft through a spline at the connection position, and the first bearing is sleeved on the motor shaft and is located at the nested position of the motor shaft and the input shaft, so that the assembly of the motor shaft and the input shaft can be ensured to be more reliable and safe; a first oil guide channel arranged in an axial direction and a first oil guide hole arranged in a radial direction are arranged in the input shaft, and a second oil guide hole is arranged on the motor shaft, and the first bearing is connected with the first oil guide channel through the first oil guide hole and the second oil guide hole, and the first bearing is connected with the first oil guide channel through the first oil guide hole and the second oil guide hole, so that the lubricating oil can be directly fed into the first oil guide channel, and the lubricating oil is lubricated when the input shaft rotates. The lubricating oil is thrown into the first oil guide hole, and then flows to the first bearing through the second oil guide hole to lubricate the first bearing; at the same time, the lubricating oil can also flow from the first oil guide hole along the axial direction of the input shaft to the connection position between the first end of the motor shaft and the second end of the input shaft, to lubricate the spline at the connection position; this example provides a new input shaft lubrication arrangement scheme while ensuring the original structure and axial length, and the first oil guide channel, the first oil guide hole and the second oil guide hole cooperate to form splash lubrication, which can throw the lubricating oil to the spline for lubrication, and lubricate the first bearing at the same time, reducing the difficulty of drive assembly layout and component cost, effectively ensuring the wear resistance of the spline and bearing lubrication, less wear during operation, and extremely high reliability; compared with the lubrication scheme in the prior art, the structure is simpler, the cost is lower, and the lubrication scheme is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional view of the drive assembly in the utility model;

[0027] Figure 2 It is an isometric view of the input shaft in the utility model;

[0028] Figure 3 It is an axonometric view of the oil guide nozzle in the utility model;

[0029] Figure 4 It is a schematic diagram of the driving system in the utility model.

[0030] Among them, 1. input shaft; 2. motor shaft; 3. first bearing; 4. first oil guide channel; 5. first oil guide hole; 6. second oil guide hole; 7. limiting protrusion; 8. guide groove; 9. first housing; 10. second housing; 11. second bearing; 12. oil guide nozzle; 121. connecting column; 122. limiting plate; 13. clamping bolt; 14. motor rotor; 15. motor resolver; 16. clamping bushing; 17. third housing. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The utility model embodiment provides a drive assembly, referring to Figure 1 and Figure 2 The drive assembly includes an input shaft 1, a motor shaft 2 and a first bearing 3; a first oil guide channel 4 arranged in an axial direction and a first oil guide hole 5 arranged in a radial direction are provided in the input shaft 1; the first end of the motor shaft 2 is nested with the second end of the input shaft 1, and a second oil guide hole 6 is provided on the motor shaft 2; the first bearing 3 is sleeved on the nested position of the motor shaft 2 and the input shaft 1, and the first bearing 3 is connected to the first oil guide channel 4 through the first oil guide hole 5 and the second oil guide hole 6.

[0035] As an example, the drive assembly includes an input shaft 1, a motor shaft 2 and a first bearing 3; the first end of the motor shaft 2 is nested and connected with the second end of the input shaft 1, and the first bearing 3 is sleeved on the nested position of the motor shaft 2 and the input shaft 1, that is, the first end of the motor shaft 2 is sleeved on the second end of the input shaft 1, and the second end of the input shaft 1 is connected to the first end of the motor shaft 2 by a spline, and the first bearing 3 is sleeved on the motor shaft 2 and is located at the nested position of the motor shaft 2 and the input shaft 1, so that the assembly of the motor shaft 2 and the input shaft 1 can be ensured to be more secure and safe; a first oil guide channel 4 arranged in an axial direction and a first oil guide hole 5 arranged in a radial direction are provided in the input shaft 1, and a second oil guide hole 6 is provided on the motor shaft 2, and the first bearing 3 is connected to the first oil guide channel 4 through the first oil guide hole 5 and the second oil guide hole 6. This arrangement can directly input lubricating oil into the first oil guide channel 4, and when output When the input shaft 1 rotates, the lubricating oil is thrown into the first oil guide hole 5, and then flows to the first bearing 3 through the second oil guide hole 6 to lubricate the first bearing 3; at the same time, the lubricating oil can also flow from the first oil guide hole 5 along the axial direction of the input shaft 1 to the connection position between the first end of the motor shaft 2 and the second end of the input shaft 1, and lubricate the spline at the connection position; this example provides a new input shaft 1 lubrication arrangement scheme while ensuring the original structure and axial length, and the first oil guide channel 4, the first oil guide hole 5 and the second oil guide hole 6 cooperate to form splash lubrication, so that the lubricating oil can be thrown to the spline for lubrication, and the first bearing 3 can be lubricated at the same time, reducing the difficulty of drive assembly arrangement and component cost, effectively ensuring the wear resistance of the spline and bearing lubrication, less wear during operation, and extremely high reliability; compared with the lubrication scheme in the prior art, the structure is simpler, the cost is lower, and the lubrication scheme is better.

[0036] In one embodiment, referring to Figure 2 Two limiting protrusions 7 extend radially from the outside of the input shaft 1 . The two limiting protrusions 7 cooperate with the input shaft 1 to form an accommodating groove, and the first oil guide hole 5 is arranged in the accommodating groove.

[0037] As an example, two limit protrusions 7 extend in the radial direction on the outer side of the input shaft 1, and the two limit protrusions 7 cooperate with the input shaft 1 to form a receiving groove. The first oil guide hole 5 is arranged in the receiving groove, and the lubricating oil flowing out from the first oil guide channel 4 through the first oil guide hole 5 can be temporarily stored in the receiving groove, ensuring that there is sufficient lubricating oil at the first oil guide hole 5 to flow to the second oil guide hole 6, so as to lubricate the first bearing 3.

[0038] In one embodiment, referring to Figure 2 The second end of the input shaft 1 is connected to the first end of the motor shaft 2 by a spline; each limiting protrusion 7 is provided with a guide groove 8; the guide groove 8 is used to connect the spline and the accommodating groove.

[0039] As an example, the second end of the input shaft 1 is connected to the first end of the motor shaft 2 at a spline connection; each limiting protrusion 7 is provided with a guide groove 8; the guide groove 8 is used to connect the spline and the receiving groove, and the lubricating oil flowing into the receiving groove can be introduced into the connecting position of the first end of the motor shaft 2 and the second end of the input shaft 1 along the axial direction of the input shaft 1 through the guide groove 8 to lubricate the spline at the connecting position. Among them, the shape and number of the guide groove 8 can be set according to the use requirements, and the guide groove 8 can be any of a straight line, inclined and spiral type set along the axial direction of the input shaft 1, and the number of the guide groove 8 is at least two. Figure 2 The guide groove 8 is a spiral groove, which can expand the amount of lubricating oil introduced; there are three guide grooves 8, which are arranged at intervals along the limiting protrusion 7 in the circumferential direction, and can evenly introduce the lubricating oil to the position where the first end of the motor shaft 2 and the second end of the input shaft 1 meet, lubricate the splines at the meeting position, and improve the lubrication efficiency. Considering that the drive assembly has repeated impacts of positive and negative torques, the more oil there is on the spline tooth surface, the better the wear resistance. In terms of design, at least three guide grooves 8 are through the journals of the input shaft 1, so part of the oil splashed by the gears of the input shaft 1 will directly enter the guide groove 8, which fully guarantees the amount of lubricating oil on the spline tooth surface.

[0040] In one embodiment, referring to Figure 1 The drive assembly also includes a first housing 9, a second housing 10 and a second bearing 11; the input shaft 1 is installed in the first housing 9, the first end of the input shaft 1 is connected to the first housing 9 through the second bearing 11, and the second end of the input shaft 1 is connected to the first housing 9 through the first bearing 3; the second housing 10 is installed on the first housing 9 and is clearance-matched with the end face of the second bearing 11.

[0041] As an example, the drive assembly also includes a first housing 9, a second housing 10 and a second bearing 11; the first bearing 3 and the input shaft 1 are installed in the first housing 9, the first end of the input shaft 1 is installed in the first end of the first housing 9 through the second bearing 11, and the second end of the input shaft 1 is connected to the first housing 9 through the first bearing 3, and the first bearing 3 and the second bearing 11 cooperate to ensure that the input shaft 1 is firmly installed in the first housing 9; the first bearing 3 can also be arranged on the first end of the motor shaft 2, and the first end of the motor shaft 2 is installed in the second end of the first housing 9 through the first bearing 3, and the first bearing 3 provides support for the installation of the motor shaft 2, so as to facilitate the installation of the motor shaft 2 in the first housing 9; the second housing 10 is installed on the first end of the first housing 9, and cooperates with the end face clearance of the second bearing 11 to provide protection for the input shaft 1 and avoid interference with the second bearing 11.

[0042] In one embodiment, referring to Figure 1 and Figure 3The drive assembly also includes an oil guide nozzle 12, which is installed in the first end of the input shaft 1 and connected to the second housing 10; a second oil guide channel is provided in the oil guide nozzle 12, and the second oil guide channel is connected to the first oil guide channel 4.

[0043] As an example, the drive assembly also includes an oil guide nozzle 12, which is installed in the first end of the input shaft 1 and is connected to the second housing 10; a second oil guide channel is provided in the oil guide nozzle 12, and the second oil guide channel is connected to the first oil guide channel 4. The oil guide nozzle 12 is used to facilitate the lubrication of the oil into the first oil guide channel 4 of the input shaft 1, and the first oil guide channel 4, the first oil guide hole 5 and the second oil guide hole 6 cooperate to form splash lubrication, so that the lubrication oil can be thrown to the spline for lubrication, and the first bearing 3 can be lubricated at the same time, thereby reducing the difficulty of arranging the drive assembly and the cost of components, effectively ensuring the wear resistance of the spline and the lubrication of the bearing, with less wear during operation and extremely high reliability.

[0044] In one embodiment, referring to Figure 3 The oil guide nozzle 12 includes a connecting column 121 and a limiting plate 122 extending radially from one end of the connecting column 121 along the connecting column 121; the connecting column 121 is inserted into the first end of the input shaft 1, and the limiting plate 122 is interference fit with the second housing 10; the second oil guide channel is arranged in the connecting column 121.

[0045] As an example, the oil guide nozzle 12 includes a connecting column 121 and a limiting plate 122, and the limiting plate 122 extends radially from one end of the connecting column 121 along the connecting column 121; the connecting column 121 is penetrated into the first end of the input shaft 1, and the limiting plate 122 is interference fit with the second housing 10, and the oil guide nozzle 12 is an overall T-shaped structure, which is convenient for installing the oil guide nozzle 12 in the input shaft 1; the second oil guide channel is arranged in the connecting column 121, and the second oil guide channel is connected to the first oil guide channel 4. The second oil guide channel of the oil guide nozzle 12 is convenient for guiding the lubricating oil into the first oil guide channel 4 of the input shaft 1, and the first oil guide channel 4, the first oil guide hole 5 and the second oil guide hole 6 cooperate to form splash lubrication, so that the lubricating oil can be thrown to the spline for lubrication, and the first bearing 3 can be lubricated at the same time, thereby reducing the difficulty of arranging the drive assembly and the cost of components, effectively ensuring the wear resistance of the spline and the lubrication of the bearing, with less wear during operation and extremely high reliability.

[0046] In one embodiment, referring to Figure 1 The drive assembly also includes a clamping bolt 13 ; the clamping bolt 13 is arranged between the oil guide nozzle 12 and the input shaft 1 , and is used to clamp the second bearing 11 .

[0047] As an example, the drive assembly also includes a clamping bolt 13; the clamping bolt 13 is arranged between the oil guide nozzle 12 and the input shaft 1, and the clamping bolt 13 is fixed to the input shaft 1 by a threaded connection, and is used to clamp the second bearing 11; the inner hole of the clamping bolt 13 is an oil guide hole, and the lubricating oil can be introduced into the second bearing 11 through the oil guide hole to achieve lubrication of the second bearing 11.

[0048] In one embodiment, referring to Figure 1 The drive assembly also includes a motor rotor 14, a motor resolver 15 and a clamping bushing 16; the motor rotor 14, the motor resolver 15 and the clamping bushing 16 are sequentially mounted on the motor shaft 2; there is a gap between the end face of the motor resolver 15 and the end face of the first bearing 3.

[0049] As an example, the drive assembly also includes a motor rotor 14, a motor resolver 15 and a clamping bushing 16; the motor rotor 14, the motor resolver 15 and the clamping bushing 16 are sequentially mounted on the motor shaft 2; there is a gap between the end face of the motor resolver 15 and the end face of the first bearing 3 to avoid interference with the motor resolver 15 and the first bearing 3, thereby ensuring the integrity of the internal structure of the drive assembly.

[0050] The utility model embodiment provides a driving system, referring to Figure 1 and Figure 4 , including a third housing 17 and two drive assemblies; a drive assembly is installed at both ends of the third housing 17.

[0051] As an example, the drive system includes a third housing 17 and two drive assemblies; a drive assembly is installed at each end of the third housing 17, specifically, the second end of the motor shaft 2 in the drive assembly is installed in the third housing 17 through a bearing. At present, the distributed electric drive system can be equipped with hybrid vehicles, pure electric vehicles, extended-range vehicles, etc., so the adaptability requirements for distributed electric drive systems are getting higher and higher, so the lubrication of the transmission system is also a very important link. In the drive system of the dual drive assembly, the dual drive assembly has high requirements for the total lubrication flow. If the reduction gearboxes on both sides adopt forced lubrication, a large electronic pump or two small electronic pumps are required, which is not conducive to cost and layout space. Therefore, the lubrication design of the key components of the reduction gearboxes on both sides should be considered comprehensively. The drive assembly in this example provides a new lubrication arrangement for the input shaft 1 while maintaining the original structure and axial length. The oil guide nozzle 12 facilitates the lubrication of the lubricating oil into the first oil guide channel 4 of the input shaft 1. The first oil guide channel 4, the first oil guide hole 5, and the second oil guide hole 6 cooperate to form splash lubrication, which can throw the lubricating oil to the spline for lubrication and lubricate the first bearing 3 at the same time, reducing the difficulty of drive assembly arrangement and component costs, effectively ensuring the wear resistance of the spline and the lubrication of the bearings, with less wear during operation and extremely high reliability. From the perspective of the competitiveness of the entire product, a relatively small electronic pump can be used, and the overall dimensions of the entire machine will also be reduced accordingly. The entire machine has higher platform adaptability and more competitive product costs.

[0052] The working condition of the lubricating oil circuit in this example is that the lubricating oil on the reducer side is stirred by the gears and splashed onto the first housing 9, the lubricating oil is guided to the first oil guide channel 4 of the input shaft 1 through the oil guide nozzle 12, and then flows into the first oil guide hole 5 from the first oil guide channel 4, a part of the lubricating oil flowing out of the first oil guide hole 5 flows into the second oil guide hole 6 to lubricate the first bearing 3, and a part of the oil passes through the guide groove 8 connected to the first oil guide hole 5 to lubricate the spline at the connecting position where the first end of the motor shaft 2 and the second end of the input shaft 1 are connected, and the bearings and splines are lubricated at the same time.

[0053] An embodiment of the utility model provides a car, comprising a drive system.

[0054] As an example, the drive system includes a third housing 17 and two drive assemblies; a drive assembly is installed at each end of the third housing 17, specifically, the second end of the motor shaft 2 in the drive assembly is installed in the third housing 17 through a bearing. At present, the distributed electric drive system can be equipped with hybrid vehicles, pure electric vehicles, extended-range vehicles, etc., so the adaptability requirements for distributed electric drive systems are getting higher and higher, so the lubrication of the transmission system is also a very important link. In the drive system of the dual drive assembly, the dual drive assembly has high requirements for the total lubrication flow. If the reduction gearboxes on both sides adopt forced lubrication, a large electronic pump or two small electronic pumps are required, which is not conducive to cost and layout space. Therefore, the lubrication design of the key components of the reduction gearboxes on both sides should be considered comprehensively. The drive assembly in this example provides a new lubrication arrangement for the input shaft 1 while maintaining the original structure and axial length. The oil guide nozzle 12 facilitates the lubrication of the lubricating oil into the first oil guide channel 4 of the input shaft 1. The first oil guide channel 4, the first oil guide hole 5, and the second oil guide hole 6 cooperate to form splash lubrication, which can throw the lubricating oil to the spline for lubrication and lubricate the first bearing 3 at the same time, reducing the difficulty of drive assembly arrangement and component costs, effectively ensuring the wear resistance of the spline and the lubrication of the bearings, with less wear during operation and extremely high reliability. From the perspective of the competitiveness of the entire product, a relatively small electronic pump can be used, and the overall dimensions of the entire machine will also be reduced accordingly. The entire machine has higher platform adaptability and more competitive product costs.

[0055] The working condition of the lubricating oil circuit in this example is that the lubricating oil on the reducer side is stirred by the gears and splashed onto the first housing 9, the lubricating oil is guided to the first oil guide channel 4 of the input shaft 1 through the oil guide nozzle 12, and then flows into the first oil guide hole 5 from the first oil guide channel 4, a part of the lubricating oil flowing out of the first oil guide hole 5 flows into the second oil guide hole 6 to lubricate the first bearing 3, and a part of the oil passes through the guide groove 8 connected to the first oil guide hole 5 to lubricate the spline at the connecting position where the first end of the motor shaft 2 and the second end of the input shaft 1 are connected, and the bearings and splines are lubricated at the same time.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drive assembly, characterized in that: including an input shaft, a motor shaft and a first bearing; The input shaft is provided with a first oil guide channel arranged in the axial direction and a first oil guide hole arranged in the radial direction; The first end of the motor shaft is nested with the second end of the input shaft, and a second oil guide hole is provided on the motor shaft, and the second oil guide hole is communicated with the first oil guide hole; The first bearing sleeve is arranged at the nested position of the motor shaft and the input shaft, and the first bearing is communicated with the first oil guide channel through the first oil guide hole and the second oil guide hole.

2. The drive assembly according to claim 1, characterized in that: Two limiting protrusions extend from the outer side of the input shaft in the radial direction, and the two limiting protrusions cooperate with the input shaft to form a containing groove, and the first oil guide hole is arranged in the containing groove.

3. The drive assembly according to claim 2, characterized in that: The second end of the input shaft is connected to the first end of the motor shaft via a spline at a position where they meet; a guide groove is provided on each of the limiting protrusions; the guide groove is used to connect the spline and the accommodating groove.

4. The drive assembly according to claim 1, characterized in that: The drive assembly also includes a first housing, a second housing, and a second bearing; The first bearing and the input shaft are installed in the first housing, the first end of the input shaft is connected to the first housing through the second bearing, and the second end of the input shaft is connected to the first housing through the first bearing; the second housing is installed on the first housing and is clearance-matched with the end face of the second bearing.

5. The drive assembly according to claim 4, characterized in that: The drive assembly further includes an oil guide nozzle, which is installed in the first end of the input shaft and connected to the second housing; A second oil guiding passage is provided in the oil guiding nozzle, and the second oil guiding passage is communicated with the first oil guiding passage.

6. The drive assembly according to claim 5, characterized in that: The oil guide nozzle comprises a connecting column and a limiting plate extending from one end of the connecting column in the radial direction of the connecting column; The connecting column is inserted into the first end of the input shaft, and the limiting plate is interference-fitted with the second housing; The second oil guide channel is arranged in the connecting column.

7. The drive assembly according to claim 5, characterized in that: The drive assembly further includes a clamping bolt; the clamping bolt is disposed between the oil guide nozzle and the input shaft and is used to clamp the second bearing.

8. The drive assembly according to claim 1, characterized in that: The drive assembly also includes a motor rotor, a motor resolver and a compression bushing; The motor rotor, the motor resolver and the clamping bushing are sequentially sleeved on the motor shaft; There is a gap between the end surface of the motor resolver and the end surface of the first bearing.

9. A drive system, characterized in that: comprising a third housing and two drive assemblies according to any one of claims 1 to 8; The two ends of the third housing are respectively installed with a driving assembly.

10. An automobile, characterized in that: Comprising the drive system as claimed in claim 9.

Images