Power assembly of vehicle and vehicle
By setting oil discharge parts between the reducer and the motor end cover, the problem of lubricating oil penetration into the motor is solved, the effective discharge of lubricating oil and the protection of the motor are achieved, and the normal operation of the drive motor and the vehicle power output are ensured.
Patent Information
- Application Number
- CN202422218476.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-10
AI Technical Summary
Lubricating oil penetrates into the drive motor may cause damage to the motor winding, which is difficult to effectively solve in the existing technology.
An oil discharge member is provided between the reducer and the motor end cover so that the lubricating oil in the assembly gap is discharged through the oil discharge member without entering the motor housing, including a bending design, barrier portion and a check valve to prevent impurities from entering.
Effectively prevent lubricating oil from entering the motor housing, prevent damage to the motor winding, and ensure the normal operation of the drive motor and the vehicle power output.
Smart Images
Figure CN223066909U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of vehicle parts, and particularly to a powertrain of a vehicle and a vehicle. Background Art
[0002] To avoid the accumulation of lubricating oil inside the motor housing of a drive motor, related technologies provide a powertrain of a vehicle, including a drive motor, an oil guide pipe, and an oil collecting member. The drive motor includes a motor housing and a motor body. An accommodation cavity is provided inside the motor housing, and the motor body is arranged in the accommodation cavity. The oil guide pipe communicates the accommodation cavity with the oil collecting member, and the lubricating oil in the accommodation cavity can flow into the oil collecting member through the oil guide pipe.
[0003] However, the infiltration of lubricating oil into the interior of the motor housing may cause damage to the motor body. Utility Model Content
[0004] This application provides a powertrain of a vehicle and a vehicle, which is used to solve the problem that the infiltration of lubricating oil into the interior of the drive motor may cause damage to the motor winding.
[0005] In a first aspect, an embodiment of this application provides a powertrain of a vehicle, including:
[0006] A speed reducer;
[0007] A drive motor, which includes a motor housing, a motor body, a motor end cover, and an oil seal. The motor body is arranged inside the motor housing, the motor end cover closes the motor housing, a part of the motor body is inserted into the motor end cover and is connected to the speed reducer. The motor body is connected to the motor end cover through the oil seal. The motor end cover is connected to the speed reducer, and there is an assembly gap between the motor end cover and the speed reducer;
[0008] An oil drainage member is arranged on at least one of the speed reducer and the motor end cover. The oil drainage member communicates with the assembly gap and is used for the lubricating oil in the assembly gap to flow out.
[0009] In a possible implementation manner, the oil drainage member is at least partially bent.
[0010] In a possible implementation manner, the oil drainage member includes an oil inlet section, an extension section, and an oil outlet section that are sequentially communicated. Both the oil inlet section and the oil outlet section have an included angle with the extension section, and the oil inlet section communicates with the assembly gap.
[0011] In a possible implementation manner, the lengths of both the oil inlet section and the oil outlet section are less than the length of the extension section.
[0012] In a possible implementation manner, a blocking portion for blocking impurities is arranged in at least one of the oil outlet section, the extension section, and the oil inlet section.
[0013] In a possible implementation, the barrier portion is disposed on the top wall of the oil outlet section, the extension section or the oil inlet section.
[0014] In a possible implementation, the oil inlet section is disposed at the lower part of the reducer or the motor end cover.
[0015] In a possible implementation, the oil drain member is an oil drain hole, an oil drain groove or an oil drain pipe.
[0016] In a possible implementation, the oil drain member is an oil drain pipe, and at least one of the motor end cover and the reducer is integrally cast with the oil drain member.
[0017] In a second aspect, an embodiment of the present application provides a vehicle, including a vehicle body and a power assembly of any vehicle provided in the first aspect disposed on the vehicle body.
[0018] The power assembly of the vehicle provided by the embodiment of the present application and the vehicle. The power assembly of the vehicle is provided with an oil drain member on at least one of the reducer and the motor end cover, and the assembly gap between the motor end cover and the reducer is communicated with the oil drain member, so that the lubricating oil infiltrated into the assembly gap from the reducer can be discharged from the assembly gap through the oil drain member, and will not flow into the motor housing through the oil seal on the motor end cover, and thus will not cause damage to the motor body in the motor housing. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings here are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the embodiments of the present application.
[0020] Figure 1 It is a partial structural schematic diagram of the power assembly of the vehicle provided by the embodiment of the present application;
[0021] Figure 2 is Figure 1 the structural schematic diagram of the motor end cover in
[0022] Figure 3 is Figure 2 the structural schematic diagram of the oil drain member in
[0023] Figure 4 is Figure 3 the structural schematic diagram of the extension section with a conical barrier portion in
[0024] Figure 5 is Figure 3 the structural schematic diagram of the extension section with a V-shaped barrier portion in
[0025] Figure 6 is Figure 3 the structural schematic diagram of the extension section with a wavy barrier portion in
[0026] Figure 7 This is a partial structural schematic diagram of the vehicle provided by the embodiment of the present application.
[0027] Explanation of the reference numerals in the drawings:
[0028] 10 - Power assembly of the vehicle; 20 - Wheel
[0029] 100 - Reducer; 110 - Reducer housing; 120 - Reducer body
[0030] 200 - Driving motor; 210 - Motor housing; 220 - Motor body; 230 - Motor end cover; 240 - Oil seal
[0031] 300 - Assembly clearance
[0032] 400 - Oil drain part; 410 - Oil inlet section; 420 - Extension section; 430 - Oil outlet section; 440 - Blocking part
[0033] 500 - Axle
[0034] For the convenience of understanding the solution of the embodiment of the present application, the spline curves and arrows used in the reference numerals in the drawings are described herein: The components indicated by the spline curves without arrows are solid components, that is, components with solid structures; the components indicated by the spline curves with arrows are virtual components, that is, components without solid structures.
[0035] Through the above drawings, the clear embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the embodiment of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners
[0036] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.
[0037] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. (if any) is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application 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 should not be construed as a limitation to the embodiments of the present application. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. If there is no conflict, the embodiments of the present application and the various features in the embodiments can be combined with each other, and all are within the protection scope of the present application.
[0038] Please refer to Figure 1 , an embodiment of the present application provides a powertrain for a vehicle, including a reducer 100 and a drive motor 200. The drive motor 200 includes a motor housing 210, a motor body 220, a motor end cover 230 and a oil seal 240. The motor body 220 is disposed within the motor housing 210. The motor end cover 230 closes the motor housing 210. A part of the motor body 220 is inserted into the motor end cover 230 and connected to the reducer 100. The motor body 220 is connected to the motor end cover 230 through the oil seal 240. The motor end cover 230 is connected to the reducer 100, and there is an assembly gap 300 between the motor end cover 230 and the reducer 100.
[0039] A part of the motor body 220 passes through the motor end cover 230 and is connected to the reducer 100, so that the reducer 100 and the drive motor 200 form a complete power transmission system. The reducer 100 can adjust the rotational speed and torque output by the drive motor 200 to adapt to the driving requirements of the vehicle. Through this configuration, while maintaining the efficient operation of the drive motor 200, an appropriate power output can be provided for the wheels 20 of the vehicle, thereby improving the efficiency and performance of the powertrain.
[0040] The motor body 220 of the drive motor 200 is arranged inside the motor housing 210, and the motor end cover 230 closes the motor housing 210. The motor housing 210 and the motor end cover 230 together form a closed space, which can effectively prevent external impurities (such as dust, dirt, moisture) from entering the interior of the motor housing 210 and affecting the normal operation of the motor body 220. At the same time, this structure facilitates the assembly and maintenance of the motor body 220. When it is necessary to check or repair the motor body 220, only the motor end cover 230 needs to be disassembled, rather than completely disassembling the entire motor, thus simplifying the maintenance process and reducing the maintenance time and cost.
[0041] Considering manufacturing errors and assembly errors, it is necessary to ensure that there is an assembly gap 300 between the motor end cover 230 of the drive motor 200 and the speed reducer 100. Specifically, the existence of the assembly gap 300 enables both the speed reducer 100 and the motor end cover 230 to have certain manufacturing errors and assembly errors. Thus, large-scale production and assembly can be carried out. At the same time, the assembly gap 300 can, to a certain extent, adapt to the thermal expansion during the operation of the speed reducer 100 and the drive motor 200, preventing the speed reducer 100 and the motor end cover 230 from deforming or being damaged due to thermal expansion and contraction.
[0042] In a specific implementation, the output shaft of the motor body 220 is inserted into the motor end cover 230, passes through the assembly gap 300, and is connected to the input shaft of the speed reducer 100. And an oil seal 240 is sleeved on the output shaft of the motor body 220, and the output shaft of the motor body 220 is connected to the motor end cover 230 through the oil seal 240.
[0043] Further, please refer to Figure 1 and Figure 2 , at least one of the speed reducer 100 and the motor end cover 230 is provided with an oil drain part 400. The oil drain part 400 is communicated with the assembly gap 300, and the oil drain part 400 is used for allowing the lubricating oil in the assembly gap 300 to flow out.
[0044] By setting the oil drain part 400, when the oil seal 240 fails and the lubricating oil splashed by the gears in the speed reducer 100 enters the assembly gap 300, the lubricating oil in the assembly gap 300 can be discharged from the assembly gap 300 through the oil drain part 400, and will not flow into the motor housing 210 through the oil seal 240 on the motor end cover 230. Thus, it can be avoided that the lubricating oil damages the motor winding insulation of the motor body 220, thereby avoiding insulation failure or burning of the drive motor 200, and further avoiding the failure of the vehicle to lose power.
[0045] In this embodiment, the oil drain member 400 communicates with the assembly gap 300 but does not communicate with the interior of the motor housing 210, creating a preventive protection mechanism. This design can drain the lubricating oil before it reaches the interior of the motor housing 210. Therefore, it can effectively prevent the lubricating oil from seeping into the interior of the motor housing 210.
[0046] Furthermore, please refer to Figure 1 , the speed reducer 100 includes a speed reducer housing 110 and a speed reducer body 120 disposed within the speed reducer housing 110. The speed reducer housing 110 is connected to the motor end cover 230. The assembly gap 300 is formed between the speed reducer housing 110 and the motor end cover 230. The oil drain member 400 is disposed on at least one of the speed reducer housing 110 and the motor end cover 230.
[0047] The following elaborates on the preferred technical solutions of the powertrain of the vehicle according to the embodiments of the present application with reference to the accompanying drawings.
[0048] It should be noted that in the embodiments of the present application, the oil drain member 400 can be disposed on the speed reducer 100, or on the motor end cover 230, or on both the speed reducer 100 and the motor end cover 230 simultaneously. However, for the purpose of understanding the specific structure of the oil drain member 400, the embodiments of the present application take the case where the oil drain member 400 is disposed on the motor end cover 230 as an example for illustration.
[0049] In the embodiments of the present application, the oil drain member 400 is at least partially bent.
[0050] The oil drain member 400 being at least partially bent can, to a certain extent, prevent impurities outside the assembly gap 300 from entering the assembly gap 300 through the oil drain member 400. Specifically, when impurities attempt to flow backward into the assembly gap 300, the bent oil drain member 400 can increase the resistance for the impurities to advance, thereby blocking the impurities and avoiding external impurities from affecting the normal operation of the drive motor 200 and the speed reducer 100.
[0051] It can be understood that since the oil drain member 400 is at least partially bent, the oil drain member 400 has at least one corner, which can, to a certain extent, prevent impurities outside the assembly gap 300 from entering the assembly gap 300 through the oil drain member 400. The more the number of corners, the better the blocking effect of the oil drain member 400. Exemplarily, the number of corners is one, two, or three.
[0052] In some embodiments, please refer to Figure 2 and Figure 3 , the oil drain member 400 includes an oil inlet section 410, an extension section 420, and an oil outlet section 430 that are sequentially connected. Both the oil inlet section 410 and the oil outlet section 430 have an angle with the extension section 420, and the oil inlet section 410 communicates with the assembly gap 300.
[0053] Specifically, the oil inlet section 410 is directly connected to the assembly gap 300, providing a convenient inlet for the lubricating oil in the assembly gap 300, enabling the lubricating oil in the assembly gap 300 to be quickly discharged and preventing the lubricating oil from accumulating in the assembly gap 300. The extension section 420 has a certain length, providing a stable flow channel for the lubricating oil, which can not only prevent backflow but also, to a certain extent, prevent impurities outside the assembly gap 300 from entering the assembly gap 300 through the oil drainage member 400. The oil outlet section 430 provides an outlet for the lubricating oil, ensuring the smooth discharge of the lubricating oil and preventing the lubricating oil from accumulating in the assembly gap 300.
[0054] Both the oil inlet section 410 and the oil outlet section 430 have an angle with the extension section 420, which can, to a certain extent, prevent impurities outside the assembly gap 300 from entering the assembly gap 300 through the oil drainage member 400. Specifically, when impurities attempt to flow backward into the assembly gap 300, the angles between the oil inlet section 410 and the extension section 420 and between the oil outlet section 430 and the extension section 420 can increase the resistance for the impurities to move forward. Combined with the length design of the extension section 420, the blocking effect of the oil drainage member 400 can be further enhanced, thus preventing external impurities from affecting the normal operation of the drive motor 200 and the reducer 100.
[0055] In some other embodiments, the oil inlet section 410 and the oil outlet section 430 are respectively located on opposite sides of the extension section 420.
[0056] Specifically, the oil inlet section 410, the extension section 420, and the oil outlet section 430 can be connected in sequence from top to bottom along the height direction of the motor end cover 230, enabling the lubricating oil in the assembly gap 300 to be smoothly discharged from the assembly gap 300.
[0057] Furthermore, the lengths of both the oil inlet section 410 and the oil outlet section 430 are less than the length of the extension section 420.
[0058] In this embodiment, the lengths of both the oil inlet section 410 and the oil outlet section 430 are less than the length of the extension section 420, making the extension section 420 longer. Impurities need to overcome a longer path to reach the assembly gap 300, thereby increasing the difficulty for external impurities to enter the assembly gap 300 and further enhancing the protection ability of the extension section 420 against external impurities.
[0059] In some other embodiments, please refer to Figures 4 to 6 , a blocking portion 440 for blocking impurities is provided in at least one of the oil inlet section 410, the extension section 420, and the oil outlet section 430.
[0060] In this embodiment, the blocking portion 440 forms an additional physical barrier that can effectively block impurities entering the extension section 420 to prevent external impurities from entering the assembly gap 300.
[0061] Based on the fact that the extension section 420 already has a certain blocking effect, by adding the blocking portion 440 in at least one of the oil inlet section 410, the extension section 420, and the oil outlet section 430, the blocking effect of the oil drain member 400 can be significantly improved.
[0062] Specifically, the blocking portion 440 is disposed on the inner wall of the oil inlet section 410, the extension section 420, or the oil outlet section 430.
[0063] Further, please refer to Figures 4 to 6 , the blocking portion 440 is disposed on the top wall of the oil inlet section 410, the extension section 420, or the oil outlet section 430.
[0064] Disposing the blocking portion 440 on the top wall forms an "inverted" physical barrier. When impurities enter the oil drain member 400, the blocking portion 440 will immediately obstruct the impurities, effectively intercepting these impurities and preventing them from further flowing into the assembly gap 300.
[0065] Still further, the blocking portion 440 is provided in a convex shape.
[0066] The convex setting of the blocking portion 440 increases the contact surface between the blocking portion 440 and the rising impurities. Compared with the planar design, the convex structure can more effectively block the upward moving impurities.
[0067] In addition, the convex setting of the blocking portion 440 on the top wall of the extension section 420 will not interfere with the normal flow of the lubricating oil. Specifically, since the lubricating oil mainly flows downward by the action of gravity, the blocking portion 440 located on the top wall will not obstruct it, ensuring the efficient operation of the oil drain function.
[0068] To facilitate the understanding of the specific structure of the blocking portion 440, the embodiment of the present application takes the blocking portion 440 being disposed on the extension section 420 as an example for illustration.
[0069] In some specific implementation manners, please refer to Figure 4 , the blocking portion 440 is in a conical shape.
[0070] The inclined surface of the conical blocking portion 440 is conducive to the natural sliding of impurities under the action of gravity, avoiding the accumulation of impurities on the surface of the blocking portion 440 and improving the self-cleaning ability of the extension section 420.
[0071] The conical blocking portion 440 provides a large blocking surface area in a limited space, which can not only effectively block impurities but also does not overly occupy the oil drain space of the extension section 420, improving the space utilization rate.
[0072] In some other specific embodiments, please refer to Figure 5 , the blocking portion 440 is V-shaped.
[0073] The V-shaped blocking portion 440 can also provide a large blocking surface area in a limited space, which can effectively block impurities without occupying too much oil drainage space of the extension section 420, improving the space utilization rate.
[0074] In still some other specific embodiments, please refer to Figure 6 , the blocking portion 440 is wavy.
[0075] The wavy blocking portion 440 increases the surface area of the blocking portion 440, improving the ability to block impurities. Moreover, the multiple peaks and valleys of the wavy blocking portion 440 can form multiple blocking intervals, which is beneficial to capturing impurities in the extension section 420.
[0076] In some embodiments, the oil inlet section 410 is arranged below the output shaft of the motor body 220.
[0077] When the lubricating oil in the assembly gap 300 contacts the output shaft of the motor body 220, the lubricating oil may flow into the motor housing 210 along the output shaft. In this embodiment, the oil inlet section 410 is arranged below the output shaft of the motor body 220, and the height of the lubricating oil in the assembly gap 300 is approximately the same as the height of the oil inlet section 410. Then, the lubricating oil in the assembly gap 300 is always located below the output shaft of the motor body 220, the lubricating oil does not contact the motor body 220, and the lubricating oil will not flow into the motor housing 210 along the output shaft.
[0078] In some embodiments, the oil inlet section 410 is arranged at the lower part of the reducer 100 or the motor end cover 230.
[0079] Under the action of gravity, the lubricating oil will naturally gather towards the lower place. When the oil inlet section 410 is arranged at the lower part of the reducer 100 or the motor end cover 230, it can ensure that all the lubricating oil entering the assembly gap 300 can be effectively discharged, and the lubricating oil remaining in the assembly gap 300 can be minimized to avoid the lubricating oil from infiltrating into the interior of the motor housing 210 as much as possible.
[0080] Arranging the oil inlet section 410 at the lower part of the reducer 100 or the motor end cover 230 utilizes the natural gravity for oil drainage, eliminating the need for additional diversion structures or auxiliary devices, simplifying the structure of the oil drainage system, reducing the number of parts, and lowering the manufacturing and assembly costs.
[0081] In the embodiments of the present application, the oil drainage member 400 is an oil drainage groove.
[0082] The arrangement of the oil drain part 400 in this embodiment is relatively simple. It only needs to cut out the oil drain part 400 on the speed reducer 100 or the motor end cover 230.
[0083] In some other embodiments, the oil drain part 400 is an oil drain hole.
[0084] In this embodiment, setting the oil drain part 400 as an oil drain hole can ensure the integrity of the end face of the speed reducer 100 or the motor end cover 230, so as to ensure that when one of the speed reducer 100 and the motor end cover 230 is combined with the other, glue sealing can be carried out between the two.
[0085] In still some other embodiments, the oil drain part 400 is an oil drain pipe.
[0086] The oil drain pipe can precisely control the discharge direction and discharge position of the lubricating oil. Specifically, the oil drain pipe can be oriented in a specific direction or extend along a specific position to discharge the lubricating oil in a specific direction, or guide the discharged lubricating oil to a preset collection area or storage device, rather than allowing it to flow freely, so that the discharged lubricating oil can be better managed, preventing it from contaminating other components or the environment, and at the same time facilitating subsequent recovery or treatment.
[0087] Furthermore, the oil drain part 400 is a metal oil drain pipe. The metal oil drain pipe has higher strength and is not easily damaged.
[0088] Still further, at least one of the motor end cover 230 and the speed reducer 100 is integrally cast with the oil drain part 400.
[0089] The oil drain part 400 is an irregular metal oil drain pipe, and it is difficult to arrange it in the formed motor end cover 230 and / or speed reducer 100. Therefore, in the embodiment of the present application, at least one of the motor end cover 230 and the speed reducer 100 is integrally cast with the oil drain part 400, and the oil drain part 400 can be directly buried in the motor end cover 230 and / or speed reducer 100 during the casting process of the motor end cover 230 and / or speed reducer 100.
[0090] In specific implementation, the metal oil drain pipe is an extrusion and stretching formed part. The metal oil drain pipe is pre-placed in the mold, and then the motor end cover 230 and / or speed reducer 100 is cast. The metal oil drain pipe can be directly buried in the motor end cover 230 and / or speed reducer 100 during the casting process of the motor end cover 230 and / or speed reducer 100, which can not only ensure the oil drainage efficiency of the motor end cover 230 and / or speed reducer 100, but also ensure the structural strength of the motor end cover 230 and / or speed reducer 100.
[0091] Furthermore, a one-way valve (not shown) can be provided at the end of the oil drain part 400.
[0092] By setting up a check valve, the check valve only allows the lubricating oil within the assembly clearance 300 to flow out through the check valve, and does not allow impurities outside the assembly clearance 300 to enter the assembly clearance 300, so as to ensure the normal operation of the drive motor 200 and the reducer 100.
[0093] In some specific embodiments, the oil drain member 400 is a hose, which is convenient for installation and maintenance.
[0094] In some other embodiments, the powertrain of the vehicle further includes a rubber seal layer (not shown), and the reducer 100 and the motor end cover 230 are connected through the rubber seal layer.
[0095] By setting up the rubber seal layer, the rubber seal layer forms an additional sealing barrier between the reducer 100 and the motor end cover 230, which can not only effectively prevent the lubricating oil from leaking from the assembly clearance 300, but also prevent external impurities from entering the assembly clearance 300, so as to extend the service life of the reducer 100 and the drive motor 200.
[0096] In specific implementation, during the assembly process, the rubber seal material is filled into the tiny gap between the two components. As the rubber seal material cures, the rubber seal material finally forms a continuous and elastic rubber seal layer.
[0097] Please refer to Figure 7 , the embodiment of the present application also provides a vehicle, including a vehicle body and the aforementioned powertrain 10 of the vehicle provided on the vehicle body.
[0098] Specifically, the vehicle in this embodiment adopts all the technical solutions of any one of the aforementioned powertrains 10 of the vehicle. Therefore, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.
[0099] In some embodiments, please refer to Figure 7 , the vehicle body includes wheels 20, the powertrain 10 of the vehicle includes a reducer 100, a drive motor 200 and an axle 500. The drive motor 200 is connected to the reducer 100, the reducer 100 is connected to the axle 500, and the axle 500 is connected to the wheels 20. The drive motor 200 drives the reducer 100 to operate, so that the reducer 100 drives the axle 500 to rotate, and the axle 500 then drives the wheels 20 to rotate, thereby realizing the movement of the vehicle.
[0100] It can be understood that Figure 7 only some components included in the vehicle are schematically shown, and the actual shape, actual size, actual position and actual structure of these components are not limited by Figure 7 , and the vehicle may also include more or fewer components compared to Figure 7 .
[0101] It should be understood that the embodiments of the present application are not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.
Claims
1. A powertrain of a vehicle, characterized in that, Comprising: A speed reducer (100); A driving motor (200), the driving motor (200) includes a motor housing (210), a motor body (220), a motor end cover (230) and an oil seal (240), the motor body (220) is arranged inside the motor housing (210), the motor end cover (230) closes the motor housing (210), a part of the motor body (220) is inserted on the motor end cover (230) and connected to the speed reducer (100), the motor body (220) is connected to the motor end cover (230) through the oil seal (240), the motor end cover (230) is connected to the speed reducer (100), and there is an assembly gap (300) between the motor end cover (230) and the speed reducer (100); At least one of the speed reducer (100) and the motor end cover (230) is provided with an oil drain part (400), the oil drain part (400) is communicated with the assembly gap (300), and the oil drain part (400) is used for allowing the lubricating oil in the assembly gap (300) to flow out.
2. The powertrain of a vehicle according to claim 1, characterized in that, The oil drain part (400) is at least partially bent.
3. The powertrain of the vehicle according to claim 2, characterized in that, The oil drain part (400) includes an oil inlet section (410), an extension section (420) and an oil outlet section (430) which are communicated in sequence, and there are included angles between both the oil inlet section (410) and the oil outlet section (430) and the extension section (420), and the oil inlet section (410) is communicated with the assembly gap (300).
4. The powertrain of a vehicle according to claim 3, characterized in that, The lengths of both the oil inlet section (410) and the oil outlet section (430) are less than the length of the extension section (420).
5. The powertrain of a vehicle according to claim 3, characterized in that, At least one of the oil outlet section (430), the extension section (420) and the oil inlet section (410) is provided with a blocking part (440) for blocking impurities.
6. The powertrain of a vehicle according to claim 5, characterized in that, The blocking part (440) is arranged on the top wall of the oil outlet section (430), the extension section (420) or the oil inlet section (410).
7. The powertrain of a vehicle according to claim 3, characterized in that, The oil inlet section (410) is arranged at the lower part of the speed reducer (100) or the motor end cover (230).
8. The powertrain of a vehicle according to any one of claims 1-7, characterized in that, The oil drain part (400) is an oil drain hole, an oil drain groove or an oil drain pipe.
9. The powertrain of a vehicle according to any one of claims 1-7, characterized in that, The oil drain part (400) is an oil drain pipe, and at least one of the motor end cover (230) and the speed reducer (100) is integrally cast with the oil drain part (400).
10. A vehicle, characterized in that, Including a vehicle body and a power assembly (10) of the vehicle according to any one of claims 1-9 provided on the vehicle body.