A reducer, drive system and vehicle

Abstract

The application provides a speed reducer, a driving system and a vehicle, relates to the technical field of driving mechanisms, and aims to solve the problem that the existing lubricating structure for the speed reducer cannot sufficiently lubricate the speed reducer. The speed reducer comprises a shell, a planetary row speed reduction mechanism and a lubricating piece. The shell is formed with an accommodating cavity, and the planetary row speed reduction mechanism is arranged in the accommodating cavity. The lubricating piece is arranged in the accommodating cavity and is arranged opposite to the planetary row speed reduction mechanism. The surface of the lubricating piece close to the speed reduction mechanism is provided with a plurality of lubricating holes. The plurality of lubricating holes are arranged in a circumferential direction at intervals, and the lubricating piece is further provided with a communication channel communicated with the plurality of lubricating holes. The speed reducer can sufficiently lubricate the planetary row speed reduction mechanism.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of driving mechanisms, in particular to a reducer, a driving system and a vehicle BACKGROUND

[0002] With the improvement of people's living standards, automobiles have gradually become an essential means of transportation for most families. Among them, the driving mechanism is an important part of the automobile, which can provide power so that the automobile can run normally. The reducer is an important part of the driving mechanism, which can realize speed regulation and thus realize the regulation of the speed of the vehicle.

[0003] Generally, the reducer generates heat during operation and needs to be lubricated in time to ensure smooth operation. However, the existing lubricating structure for the reducer cannot sufficiently lubricate the reducer, and the lubricating effect is poor. SUMMARY

[0004] The application aims to provide a reducer, a driving system and a vehicle, which can solve the problem that the existing lubricating structure for the reducer cannot sufficiently lubricate the reducer.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the application is as follows:

[0006] In the first aspect, the application provides a reducer, which comprises a shell, a planetary gear set reducer and a lubricating member. The shell forms a containing cavity, and the planetary gear set reducer is arranged in the containing cavity. The lubricating member is arranged in the containing cavity and is arranged opposite to the planetary gear set reducer. The surface of the lubricating member near the side of the reducer is provided with a plurality of lubricating holes. The plurality of lubricating holes are arranged in a circumferential direction. The lubricating member is also provided with a communication channel which is in communication with the plurality of lubricating holes.

[0007] According to the above technical means, the reducer provided by the application can provide installation space for the planetary gear set reducer and the lubricating member, facilitating the installation and arrangement of the whole reducer. The lubricating oil can enter the plurality of lubricating holes through the communication channel and be sprayed out of the plurality of lubricating holes to lubricate the planetary gear set reducer. Since the plurality of lubricating holes are arranged in a circumferential direction, the plurality of lubricating holes can lubricate the components at different positions in the reducer, and the components at different positions can be lubricated even when the reducer is not running, thereby ensuring the lubricating effect of the reducer.

[0008] In a possible implementation, the shell comprises a bottom wall and a side wall. The bottom wall is located on the side of the lubricating member away from the planetary gear deceleration mechanism. The side wall is located on the side of the bottom wall close to the lubricating member, and is arranged around the periphery of the lubricating member and the planetary gear deceleration mechanism. The surface of the bottom wall close to the lubricating member is provided with a limiting groove. The lubricating member is arranged in the limiting groove and is clamped with the bottom wall.

[0009] According to the above technical means, by arranging the limiting groove on the bottom wall, the lubricating member can be fixed on the shell, and the fixing of the lubricating member is realized. At the same time, the fixing is realized by the limiting groove, which is simple in structure and easy to realize.

[0010] In a possible implementation, the lubricating member is annular, and the limiting groove is annular.

[0011] According to the above technical means, when the lubricating member is arranged in the limiting groove, the limiting groove can play a better limiting role, so that the lubricating member is less likely to fall out of the limiting groove.

[0012] In a possible implementation, the surface of the lubricating member away from the planetary gear deceleration mechanism is provided with a communication channel, and the communication channel is annular. The bottom wall is provided with a flow channel. One end of the flow channel is communicated with the limiting groove, and the other end of the flow channel forms an opening on the bottom wall.

[0013] According to the above technical means, since the communication channel is annular and the plurality of lubricating holes are arranged at intervals in the circumferential direction, the communication channel can be communicated with the plurality of lubricating holes to realize the distribution of lubricating oil. At the same time, since the communication channel is arranged on the surface of the lubricating member away from the planetary gear deceleration mechanism, the communication channel can be directly manufactured on the surface during manufacturing, which is simple and convenient. Since the flow channel forms an opening on the bottom wall, lubricating oil can be added into the flow channel through the opening. Then, the lubricating oil can enter the communication channel through the flow channel, and then enter different lubricating holes from the communication channel and be sprayed out of the different lubricating holes.

[0014] In a possible implementation, the diameter of the lubricating hole is smaller than the size of the communication channel in the radial direction of the lubricating member.

[0015] According to the above technical means, since the size of the communication channel is larger, the lubricating oil in the communication channel can more smoothly enter the lubricating hole and be sprayed out of the lubricating hole, and the flow is more smooth.

[0016] In a possible implementation, the inner wall of the lubricating member and the outer wall of the lubricating member are abutted with the groove wall of the limiting groove, so that the lubricating member is clamped in the limiting groove.

[0017] According to the technical scheme, the lubricating part can be in interference fit in the limiting groove, and the lubricating part is better arranged in the limiting groove through interference fit with the limiting groove. Meanwhile, since the inner wall and the outer wall of the lubricating part abut against the groove wall of the limiting groove, it can be ensured that the lubricating oil cannot be sprayed out of the limiting groove, the lubricating oil can be sprayed out of the lubricating hole, and the planetary row deceleration mechanism is better lubricated.

[0018] In a possible implementation, the decelerator further comprises a first sealing part. The first sealing part is sleeved on the outer wall of the lubricating part and abuts against the outer wall of the lubricating part and the groove wall of the limiting groove respectively.

[0019] According to the technical scheme, the outer wall of the lubricating part and the limiting groove can be sealed through the first sealing part, so that the lubricating oil cannot flow out of the limiting groove.

[0020] In a possible implementation, the decelerator further comprises a second sealing part. The lubricating part is sleeved on the outer wall of the second sealing part, and the second sealing part abuts against the inner wall of the lubricating part and the groove wall of the limiting groove respectively.

[0021] According to the technical scheme, the inner wall of the lubricating part and the limiting groove can be sealed through the second sealing part, so that the lubricating oil cannot flow out of the limiting groove.

[0022] In a possible implementation, the planetary row deceleration mechanism comprises a first planet carrier and a plurality of first planet gears. The plurality of planet gears are arranged on the first planet carrier at intervals along the circumference of the first planet carrier. The plurality of lubricating holes are arranged opposite to the plurality of first planet gears during rotation of the plurality of first planet gears.

[0023] According to the technical scheme, since the lubricating hole can be arranged opposite to the first planet gear, the oil sprayed out of the lubricating hole can be effectively sprayed on the first planet gear to lubricate the first planet gear and achieve good lubrication effect. Since the plurality of lubricating holes are arranged at intervals along the circumference, when the plurality of first planet gears cannot rotate due to slippage of the other side wheel, the plurality of lubricating holes can also lubricate the first planet gears at different positions respectively to ensure lubrication effect.

[0024] In a possible implementation, the axis of the lubricating hole is parallel to the rotation axis of the first planet gear.

[0025] According to the technical scheme, when the lubricating hole is arranged opposite to the first planet gear, the oil sprayed out of the lubricating hole can be directly sprayed in the direction of the first planet gear, so that the lubricating oil can better reach the first planet gear to lubricate the structure at the first planet gear and ensure lubrication effect.

[0026] In a possible implementation, the number of lubricating holes is greater than the number of first planet gears.

[0027] According to the above technical means, since the number of lubricating holes is greater than the number of first planetary gears, more lubricating oil can be sprayed on the first planetary gears during lubrication, thereby ensuring the lubrication effect.

[0028] In a possible implementation, the plurality of lubricating holes are uniformly distributed along the circumference of the lubricating member.

[0029] According to the above technical means, since the plurality of lubricating holes are uniformly distributed along the circumference of the lubricating member, each position can be better lubricated, and the problem that some first planetary gears cannot be lubricated when not rotating due to the excessively large spacing of some lubricating holes along the circumference can be avoided.

[0030] In a second aspect, an embodiment of the present application provides a drive system, including any one of the reducers in the first aspect.

[0031] Since the drive system provided by the embodiment of the present application includes any one of the reducers in the first aspect, the same technical problems as the above reducer can be solved, and the same technical effects can be achieved, which will not be described here.

[0032] In a third aspect, an embodiment of the present application provides a vehicle, including any one of the drive systems in the second aspect.

[0033] Since the vehicle provided by the embodiment of the present application includes the drive system in the second aspect, the same technical problems as the above drive system can be solved, and the same technical effects can be achieved, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 FIG. 1 is a structural schematic diagram of a drive system provided by an embodiment of the present application;

[0035] Figure 2 FIG. 2 is a partial enlarged view of a lubricating member of a reducer provided by an embodiment of the present application;

[0036] Figure 3 FIG. 3 is a structural schematic diagram of a lubricating member provided by an embodiment of the present application. BRIEF DESCRIPTION OF DRAWINGS:

[0038] 100-drive system; 200-reducer; 300-drive motor; 10-planetary gear reduction mechanism; 11-first planet carrier; 12-first planetary gear; 13-needle bearing; 14-inner ring gear; 15-second planetary gear; 16-second planet carrier; 17-outer ring gear; 20-housing; 21-bottom wall; 211-limiting groove; 212-flow-through channel; 30-lubricating member; 301-lubricating hole; 302-communication channel; 41-stator; 42-rotor; 43-drive gear. DETAILED DESCRIPTION

[0039] In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings.

[0040] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0041] With the improvement of people's living standards, cars have gradually become the main means of transportation for people. Among them, the reducer is an important part of the car. In the related technology, a two-stage planetary gear structure is used to compose the reducer, which can include a planet carrier, a first-stage planetary gear, a second-stage planetary gear and a ring gear. The first-stage planetary gear is arranged on the planet carrier, and the planet carrier can be driven to rotate by the first-stage planetary gear. The second-stage planetary gear is located outside the planet carrier and rotates by the driving of the planet carrier. The second-stage planetary gear is connected with the ring gear, and the ring gear rotates by the rotation of the second-stage planetary gear.

[0042] In addition, the planetary gears of the first-stage planetary gear need to be lubricated to ensure smooth rotation. Therefore, in the related technology, a fixed single oil guide hole is generally arranged on the housing of the reducer. In this way, the planetary gears can be lubricated in turn by passing through the oil guide hole during rotation with the planet carrier.

[0043] Based on the above structure, the drive shafts on the left and right sides of the car can be respectively connected with the planet carrier and the ring gear structure to be driven by the planet carrier and the ring gear. When one side of the tires on both sides of the vehicle slips and the other side of the tires cannot rotate, the planet carrier is in a non-rotating state at this time, so that the plurality of planetary gears cannot rotate with the planet carrier. At this time, since the position of the oil guide hole is fixed, the plurality of planetary gears cannot pass through the oil guide hole in turn, so that the planetary gears cannot be fully lubricated, which may cause wear and gelling failure of the planetary gear pair and the needle bearing.

[0044] Based on this, the embodiments of the present application provide a vehicle. Among them, the specific type of the vehicle is not limited in the embodiments of the present application, for example, the vehicle provided by the embodiments of the present application can be an electric vehicle, a hybrid electric vehicle or a solar vehicle, etc.

[0045] To achieve the basic functions of a car, the vehicle may include components such as a body, chassis, powertrain, and electrical system.

[0046] The vehicle body may include a frame, doors, and windows. The frame forms the overall external shape of the vehicle and creates the passenger space. Doors can be rotatably connected to the frame, allowing the interior of the passenger space to be opened or closed. Windows can be mounted on the doors or the frame, providing passengers with a view of the outside environment.

[0047] The chassis may include components such as the transmission system and the drive system. The drive system drives the wheels to rotate. Depending on the drive method, drive systems can be classified as front-wheel drive, rear-wheel drive, and four-wheel drive. The transmission system transmits power generated by the engine to the wheels.

[0048] A powertrain provides power to a vehicle, enabling it to perform basic driving functions. The composition of the powertrain varies depending on the type of vehicle. For example, when the vehicle is an electric vehicle, the powertrain may include an electric motor.

[0049] The driving system provided in the embodiments of this application will be further described below. For example... Figure 1 As shown, Figure 1 This is a schematic diagram of a drive system 100 provided in an embodiment of this application. The drive system 100 may include a reducer 200 and a drive motor 300. The drive motor 300 may be connected to the reducer 200. The drive motor 300 converts electrical energy into mechanical energy to provide power to the vehicle, and the reducer 200 can adjust the rotational speed, allowing the vehicle to run at different speeds. Furthermore, the reducer 200 can also increase the torque output from the wheels.

[0050] like Figure 1 As shown, the drive motor 300 may include a rotor 42, a stator 41, and a drive gear 43. The rotor 42 can rotate under the influence of a magnetic field, thereby driving the drive gear 43 to rotate. The drive gear 43 can mesh with the reducer 200, driving the reducer 200 to operate and regulate the travel speed.

[0051] The reducer 200 provided in the embodiments of this application will be further described below. (Continue referring to...) Figure 1 The reducer 200 may include a planetary gear reducer 10, a housing 20, and a lubricating component 30. The housing 20 may have a mounting cavity, within which the planetary gear reducer 10 and the lubricating component 30 can be housed. Thus, the housing 20 provides mounting space for the planetary gear reducer 10 and the lubricating component 30, facilitating the overall installation and setup of the reducer 200.

[0052] The lubricating member 30 can be arranged opposite to the planetary gear deceleration mechanism 10, as shown in Figure 1 and Figure 2 Figure 2 A partial enlarged view of the lubricating member 30 of the decelerator 200 is provided in the embodiments of the present application. The surface of the lubricating member 30 close to the side of the planetary gear deceleration mechanism 10 can be provided with a plurality of lubricating holes 301. The plurality of lubricating holes 301 can be arranged at intervals in the circumferential direction. The lubricating member 30 is also provided with a communication passage 302 in communication with the plurality of lubricating holes 301.

[0053] Thus, the lubricating oil can enter the plurality of lubricating holes 301 through the communication passage 302, and be sprayed from the plurality of lubricating holes 301 to lubricate the planetary gear deceleration mechanism 10. Since the plurality of lubricating holes 301 are arranged at intervals in the circumferential direction, the plurality of lubricating holes 301 can lubricate components at different positions in the decelerator 200, and can also lubricate components at different positions when the decelerator 200 is not running, thereby ensuring the lubrication effect of the decelerator 200.

[0054] Next, the planetary gear deceleration mechanism 10 provided in the embodiments of the present application is described. As shown in Figure 1 In some embodiments, the planetary gear deceleration mechanism 10 can include a first planet carrier 11 and a plurality of first planet gears 12. The plurality of first planet gears 12 can be arranged at intervals on the first planet carrier 11 in the circumferential direction of the first planet carrier 11. A drive gear 43 can be engaged with the plurality of first planet gears 12. In this way, the drive gear 43 can drive the plurality of first planet gears 12 to rotate. The drive gear 43 can serve as a sun gear.

[0055] In addition, in some embodiments, the planetary gear deceleration mechanism 10 can further include a needle bearing 13 arranged on the first planet carrier 11, and the first planet gear 12 is mounted on the first planet carrier 11 through the needle bearing 13. By arranging the needle bearing 13, the service life of the first planet gear 12 can be improved.

[0056] As shown in Figure 1 The planetary gear deceleration mechanism 10 can further include an inner ring gear 14, a second planet gear 15, a second planet carrier 16, and an outer gear. The inner gear can be located at the periphery of the first planet gear 12 and engaged with the first planet gear 12. At the same time, the second planet gear 15 is located at the periphery of the inner gear and engaged with the inner ring gear 14, which can serve as a sun gear. In this way, the rotation of the first planet gear 12 can drive the inner ring gear 14 to rotate, thereby driving the second planet gear 15 to rotate.

[0057] ​The second planetary gear 15 can be arranged on the second planetary carrier 16. The second planetary carrier 16 can be fixedly arranged on the housing 20. The outer ring gear 17 can be engaged with the second planetary gear 15. In this way, the rotation of the second planetary gear 15 can drive the rotation of the ring gear. The first planetary carrier 11 and the outer ring gear 17 can be respectively connected with external mechanisms (two side wheels) to realize power transmission.

[0058] The plurality of lubricating holes 301 can be arranged opposite to the plurality of first planetary gears 12 during the rotation of the plurality of first planetary gears 12. In this way, the lubricating oil sprayed from the plurality of lubricating holes 301 can be effectively sprayed to the plurality of first planetary gears 12 to lubricate the plurality of first planetary gears 12, thereby achieving good lubrication effect.

[0059] It can be understood that the plurality of first planetary gears 12 can be connected with one side wheel through the first planetary carrier 11, and the outer ring gear 17 can be connected with the one side wheel. In this way, when the wheel connected with the outer ring gear 17 slips, the first planetary gears 12 stop rotating, and the first planetary carrier 11 stops rotating, and the other side wheel connected with the first planetary carrier 11 cannot rotate.

[0060] As described above, the plurality of lubricating holes 301 are arranged at intervals in the circumferential direction. In this way, when the plurality of first planetary gears 12 cannot rotate due to the slip of the other side wheel, the plurality of lubricating holes 301 can also respectively lubricate the first planetary gears 12 at different positions (for example, lubricate the needle bearings 13 and the fixing pins on which the needle bearings 13 are mounted), thereby ensuring the lubrication effect.

[0061] In some embodiments, the axis of the lubricating hole 301 can be parallel to the rotation axis of the first planetary gear 12. In this way, when the lubricating hole 301 is arranged opposite to the first planetary gear 12, the oil sprayed from the lubricating hole 301 can be directly sprayed in the direction of the first planetary gear 12, so that the lubricating oil can better reach the first planetary gear 12 to lubricate the structure at the first planetary gear 12, thereby ensuring the lubrication effect.

[0062] In some embodiments, the diameters of the plurality of lubricating holes 301 can be the same. In this way, the flow rates of the lubricating oil sprayed from the plurality of lubricating holes 301 are similar, which can enable the first planetary gears 12 at different positions to be better lubricated.

[0063] In some embodiments, as shown in Figure 3 Figure 3 ​A structure diagram of the lubricating member 30 is provided in the embodiments of the present application. A plurality of lubricating holes 301 are uniformly distributed along the circumference of the lubricating member 30. Since the plurality of lubricating holes 301 are uniformly distributed along the circumference of the lubricating member 30, each position can be better lubricated, and the problem that some lubricating holes 301 are spaced too far apart along the circumference, resulting in that some first planetary gears 12 cannot be lubricated when not rotating, can be avoided.

[0064] In some embodiments, as shown in FIG. 1, the centers of the plurality of lubricating holes 301 can be uniformly distributed along the circumference of a preset circle. Meanwhile, the rotation axes of the plurality of first planetary gears 12 can also be uniformly distributed along the circumference of the preset circle. In this way, the center of the lubricating hole 301 can coincide with the rotation axis of the first planetary gear 12 during the rotation of the first planetary gear 12. Figure 3

[0065] Of course, in other embodiments, the plurality of lubricating holes 301 can also not be uniformly arranged along the circumference of the lubricating member 30. For example, in some embodiments, the plurality of lubricating holes 301 can include two lubricating holes 301 in each group, the spacing between the two lubricating holes 301 in each group is small, and the spacing between the two adjacent groups of lubricating holes 301 is large.

[0066] In addition, in some embodiments, the number of lubricating holes 301 can be greater than the number of first planetary gears 12. Since the number of lubricating holes 301 is greater than the number of first planetary gears 12, more lubricating oil can be sprayed onto the first planetary gears 12 during lubrication, ensuring the lubrication effect. For example, the number of lubricating holes 301 can be several times the number of first planetary gears 12.

[0067] Of course, the number of lubricating holes 301 can also be less than or equal to the number of first planetary gears 12, which can be designed according to actual conditions, which is only used as an example for illustration. For example, the number of lubricating holes 301 can also be the same as the number of first planetary gears 12. Meanwhile, the circumferential spacing between the two adjacent lubricating holes 301 can be the same as the circumferential spacing between the two adjacent first planetary gears 12. In this way, the lubricating hole 301 can be arranged opposite to the first planetary gear 12 one by one.

[0068] In order to fix the lubricating member 30, as shown in FIG. 1, in some embodiments, the shell 20 can include a bottom wall 21 (not shown in the figure) and a side wall (not shown in the figure). The bottom wall 21 can be located on the side of the lubricating member 30 away from the planetary gear deceleration mechanism 10 (not shown in the figure). Figure 2 Figure 1 The side wall can be located on the side of the bottom wall 21 close to the planetary gear deceleration mechanism 10, and can be arranged around the periphery of the lubricating member 30 and the planetary gear deceleration mechanism 10. Figure 1

[0069] ​​​The surface of the bottom wall 21 close to the lubricating part 30 can be provided with a limiting groove 211. The lubricating part 30 can be arranged in the limiting groove 211 and clamped with the bottom wall 21. In this way, by arranging the limiting groove 211 on the bottom wall 21, the lubricating part 30 can be fixed on the shell 20, and the fixing of the lubricating part 30 is realized. At the same time, the fixing is realized by the limiting groove 211, which is simple in structure and easy to realize.

[0070] Of course, in other embodiments, the lubricating part 30 can also be fixed by other ways. For example, the lubricating part 30 can be provided with a limiting groove 211, and the surface of the bottom wall 21 close to the lubricating part 30 can be provided with a limiting column. The limiting column is arranged in the limiting groove 211. In this way, the lubricating part 30 can be fixed on the bottom wall 21.

[0071] In addition, the lubricating part 30 can also be arranged on the side wall and connected with the side wall. It can be understood that the specific fixing way of the lubricating part 30 can be designed according to the actual situation, which is only used as an example here.

[0072] In some embodiments, as shown in Figure 1 and Figure 2 , the lubricating part 30 can be annular. At the same time, the limiting groove 211 can also be annular. In this way, when the lubricating part 30 is arranged in the limiting groove 211, the limiting groove 211 can play a better limiting role, so that the lubricating part 30 is less likely to fall out of the limiting groove 211.

[0073] Of course, in other embodiments, the lubricating part 30 and the limiting groove 211 can also be other shapes. For example, the lubricating part 30 and the limiting groove 211 can also be square. The specific shape of the lubricating part 30 and the limiting groove 211 can also be adjusted according to the actual needs, which will not be further described here.

[0074] In some embodiments, as shown in Figure 1 and Figure 2 , the surface of the lubricating part 30 away from the planetary row speed reduction mechanism 10 can be provided with a communication channel 302. The communication channel 302 is annular. Since the communication channel 302 is annular, and the plurality of lubricating holes 301 are arranged at intervals in the circumferential direction, the communication channel 302 can be communicated with the plurality of oil guiding holes to realize the distribution of lubricating oil. At the same time, since the communication channel 302 is arranged on the surface of the lubricating part 30 away from the planetary row speed reduction mechanism 10, it can be directly manufactured on the surface during manufacturing, which is simple and convenient to operate.

[0075] Meanwhile, the bottom wall 21 can be provided with a flow passage 212. One end of the flow passage 212 is in communication with the limiting groove 211, and the other end forms an opening on the bottom wall 21. In this way, since the flow passage 212 forms an opening on the bottom wall 21, lubricating oil can be added into the flow passage 212 through the opening. For example, the other end of the flow passage 212 can penetrate the bottom wall 21 along the radial direction of the bottom wall 21. Alternatively, the other end of the flow passage 212 can also penetrate the bottom wall 21 along the axial direction of the bottom wall 21, which can be designed according to actual conditions.

[0076] Since the flow passage 212 is in communication with the limiting groove 211, and as described above, the communication passage 302 is located in the limiting groove 211 and is in communication with the limiting groove 211. In this way, lubricating oil can enter the communication passage 302 through the flow passage 212, and can enter different lubricating holes 301 from the communication passage 302 and be sprayed out of the different lubricating holes 301.

[0077] Of course, in other embodiments, the number of communication passages 302 can also be multiple. The multiple communication passages 302 are in communication with multiple lubricating holes 301. The specific number of communication passages 302 can be designed according to actual conditions, which is only described as an example here.

[0078] In some embodiments, as shown in Figure 2 The diameter of the lubricating hole 301 can be smaller than the size of the communication passage 302 along the radial direction of the lubricating member 30. In this way, since the size of the communication passage 302 is larger, the lubricating oil located in the communication passage 302 can more smoothly enter the lubricating hole 301 and be sprayed out of the lubricating hole 301, and the flow is more smooth. Of course, in other embodiments, the diameter of the lubricating hole 301 can also be larger than the size of the communication passage 302 along the radial direction of the lubricating member 30.

[0079] In order to enable the lubricating member 30 to be better arranged in the limiting groove 211. In some embodiments, the inner wall of the lubricating member 30 and the outer wall of the lubricating member 30 are in abutment with the groove wall of the limiting groove 211, so that the lubricating member 30 is clamped in the limiting groove 211. In this way, the lubricating member 30 can be interference-fitted in the limiting groove 211, and the lubricating member 30 is better arranged in the limiting groove 211 through the interference fit with the limiting groove 211.

[0080] Meanwhile, since the inner wall and the outer wall of the lubricating member 30 are in abutment with the groove wall of the limiting groove 211, it can be ensured that the lubricating oil will not be sprayed out of the limiting groove 211, and it can be ensured that the lubricating oil can be sprayed out of the lubricating hole 301, and the planetary gear deceleration mechanism 10 can be better lubricated.

[0081] In some embodiments, the speed reducer 200 can further include a first seal. The first seal can be sleeved on the outer wall of the lubricating member 30. The first seal can abut against the outer wall of the lubricating member 30 and the groove wall of the limiting groove 211, respectively. In this way, the first seal can ensure the sealing between the outer wall of the lubricating member 30 and the limiting groove 211, so as to prevent the lubricating oil from flowing out from there. For example, the first seal can be made of a non-metallic material, such as plastic.

[0082] In some embodiments, the speed reducer 200 can further include a second seal. The lubricating member 30 can be sleeved on the outer wall of the second seal. The second seal can abut against the inner wall of the lubricating member 30 and the groove wall of the limiting groove 211, respectively. In this way, the second seal can ensure the sealing between the inner wall of the lubricating member 30 and the limiting groove 211, so as to prevent the lubricating oil from flowing out from there. For example, the second seal can also be made of a non-metallic material, such as plastic.

[0083] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any change or replacement within the technical scope disclosed in the present application shall be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A speed reducer, characterized in that, include: A housing having a mounting cavity; A planetary gear reducer mechanism is disposed within the mounting cavity; as well as, A lubricating component is disposed within the mounting cavity and is positioned opposite to the planetary gear reducer mechanism. The lubricating component has multiple lubrication holes on its surface near the planetary gear reducer mechanism, and the multiple lubrication holes are spaced apart circumferentially; the lubricating component also has a communicating channel that communicates with the multiple lubrication holes; The housing includes: A bottom wall, said bottom wall being located on the side of the lubricant away from the planetary gear reducer; and, The sidewall is located on the side of the bottom wall near the lubricant and is arranged around the periphery of the lubricant and the planetary gear reducer mechanism; The bottom wall has a limiting groove on the side of the lubricant closest to it; the lubricant is disposed in the limiting groove and engages with the bottom wall.

2. The reducer according to claim 1, characterized in that, The lubricating component is annular; the limiting groove is an annular groove.

3. The reducer according to claim 2, characterized in that, The surface of the lubricating component away from the planetary gear reducer has the communicating channel; the communicating channel is annular. A flow channel is provided on the bottom wall; one end of the flow channel is connected to the limiting groove, and the other end forms an opening on the bottom wall.

4. The reducer according to claim 3, characterized in that, The diameter of the lubrication hole is smaller than the radial dimension of the connecting channel along the lubrication element.

5. The reducer according to claim 2, characterized in that, Both the inner wall and the outer wall of the lubricant abut against the wall of the limiting groove, so that the lubricant is engaged in the limiting groove.

6. The reducer according to claim 2, characterized in that, The reducer also includes: A first sealing element is sleeved on the outer wall of the lubricating element, and the first sealing element abuts against both the outer wall of the lubricating element and the groove wall of the limiting groove; and / or, The second sealing element is fitted onto the outer wall of the second sealing element, and the second sealing element abuts against the inner wall of the lubricating element and the groove wall of the limiting groove.

7. The reducer according to claim 1, characterized in that, The planetary gear reducer mechanism includes: The first planetary support; and, Multiple first planetary gears are spaced apart on the first planetary carrier along its circumference. The plurality of lubrication holes are configured to be positioned opposite to the plurality of first planetary gears during the rotation of the plurality of first planetary gears.

8. The reducer according to claim 7, characterized in that, The axis of the lubrication hole is parallel to the rotation axis of the first planetary gear.

9. The reducer according to claim 7, characterized in that, The number of lubrication holes is greater than the number of the first planetary gears; and / or, the plurality of lubrication holes are evenly distributed at circumferential intervals along the lubrication element.

10. A drive system, characterized in that, The reducer includes any one of claims 1-9.

11. A vehicle, characterized in that, Includes the drive system as described in claim 10.

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