Speed reducer assembly and vehicle

Abstract

The invention discloses a speed reducer assembly and a vehicle. The speed reducer assembly comprises a box body, the box body is provided with a cavity and a first oil way, and the cavity comprises a speed reduction cavity and a decoupling cavity; and the oil pump communicates with the speed reduction cavity and the first oil way, and the oil pump is suitable for guiding lubricating oil in the speed reduction cavity to the decoupling cavity through the first oil way. According to the speed reducer assembly, by arranging the oil pump and the first oil way, the lubricating oil in the speed reduction cavity can be guided to the decoupling cavity, the decoupling mechanism in the decoupling cavity can be actively lubricated, and the situation that the decoupling mechanism breaks down due to insufficient lubrication is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a reducer assembly and a vehicle. Background Art

[0002] In the related art, the speed reducer assembly has a decoupling mechanism, and when the decoupling mechanism is in a decoupling state, the differential is in a non-rotating state. However, the non-rotating differential cannot stir up lubricating oil to lubricate the decoupling mechanism, which easily causes the decoupling mechanism to malfunction due to insufficient lubrication. Summary of the invention

[0003] The embodiments of the present invention provide a reducer assembly and a vehicle to solve at least one of the above-mentioned technical problems.

[0004] A reducer assembly according to an embodiment of the present invention comprises:

[0005] A casing, wherein the casing is provided with a chamber and a first oil circuit, wherein the chamber includes a deceleration chamber and a decoupling chamber;

[0006] An oil pump is connected to the deceleration chamber and the first oil circuit, and the oil pump is suitable for guiding the lubricating oil in the deceleration chamber to the decoupling chamber through the first oil circuit.

[0007] In the above-mentioned reducer assembly, by providing an oil pump and a first oil circuit, the lubricating oil in the reduction chamber can be guided to the decoupling chamber, and the decoupling mechanism in the decoupling chamber can be actively lubricated to avoid failure of the decoupling mechanism due to insufficient lubrication.

[0008] In one embodiment, the reducer assembly includes:

[0009] A transmission assembly, the transmission assembly is located in the deceleration chamber, and the transmission assembly has a first output end;

[0010] A first half shaft, the first half shaft having a first end and a second end, the deceleration chamber and the decoupling chamber are connected to each other, the first end is in the deceleration chamber, the second end is in the decoupling chamber, the first end is connected to the first output end, and the second end is suitable for being connected to an output shaft;

[0011] A decoupling mechanism is disposed in the decoupling cavity and connected between the second end and the output shaft, and is suitable for achieving coupling and separation between the first half-shaft and the output shaft.

[0012] In one embodiment, the chamber includes a first axial hole, the deceleration chamber and the decoupling chamber are connected through the first axial hole, the first half shaft passes through the first axial hole, and the outlet of the first oil circuit is connected to the first axial hole.

[0013] In one embodiment, the reducer assembly includes a first differential bearing, the transmission assembly includes a differential, the differential includes a differential housing, the first differential bearing is disposed in the first shaft hole, and the differential housing is supported on the first differential bearing.

[0014] In one embodiment, the reducer assembly includes an oil separator, which is installed in the first shaft hole, the first differential bearing is located on the side of the oil separator facing the reduction chamber, and the outlet of the first oil circuit is located on the side of the oil separator facing the decoupling mechanism.

[0015] In one embodiment, the speed reducer assembly includes a first differential bearing, the transmission assembly includes a differential, the differential includes a differential housing, and the differential housing is supported on the first differential bearing;

[0016] The housing has a first shaft hole, the speed reduction chamber and the decoupling chamber are connected through the first shaft hole, the first half shaft passes through the first shaft hole, and a first bearing seat is formed at one end of the first shaft hole adjacent to the speed reduction chamber, and the first differential bearing is supported on the first bearing seat;

[0017] The housing is provided with a second oil circuit, and the second oil circuit is suitable for guiding the lubricating oil in the deceleration chamber to the first bearing seat to lubricate the first differential bearing.

[0018] In one embodiment, the reducer assembly includes an oil separator; the oil separator is installed in the first shaft hole.

[0019] In one embodiment, a communication channel is provided on the oil separator, and the deceleration chamber and the decoupling chamber are communicated with each other through the communication channel.

[0020] In one embodiment, the second oil circuit includes a first oil collecting groove arranged in the deceleration chamber and an oil guiding structure arranged in the housing, the oil guiding structure having an oil guiding channel, the bottom wall of the first oil collecting groove is provided with a first through hole, the first oil collecting groove is suitable for collecting the lubricating oil dropped in the deceleration chamber, the inlet of the oil guiding channel is connected to the first through hole, and the outlet of the oil guiding channel is suitable for guiding the lubricating oil in the oil guiding channel to the first bearing seat to lubricate the first differential bearing.

[0021] In one embodiment, the second oil circuit includes a first flow channel disposed in the housing, the first flow channel connecting the outlet of the oil pump and the deceleration chamber, and the first flow channel is suitable for spraying the lubricating oil output by the oil pump into the first oil collecting tank.

[0022] In one embodiment, the speed reducer assembly includes a second differential bearing, the transmission assembly includes a differential, the differential includes a differential housing, and the differential housing is supported on the second differential bearing;

[0023] A second bearing seat is formed in the housing, and the second differential bearing is arranged in the second bearing seat;

[0024] The housing is provided with a third oil circuit, and the third oil circuit is suitable for guiding the lubricating oil in the deceleration chamber to the second bearing seat to lubricate the second differential bearing.

[0025] In one embodiment, the third oil circuit includes a second flow channel disposed in the housing, the second flow channel connecting the outlet of the oil pump and the second bearing seat, and the second flow channel is suitable for spraying the lubricating oil output by the oil pump to the second bearing seat.

[0026] In one embodiment, the third oil circuit includes a second oil collecting trough arranged in the deceleration chamber, and the bottom wall of the second oil collecting trough is provided with a second through hole. The second oil collecting trough is suitable for collecting the lubricating oil dropped in the deceleration chamber and guiding the lubricating oil to the second bearing seat through the second through hole.

[0027] In one embodiment, the housing includes a first housing, a second housing and a decoupling box, the first housing and the second housing enclose the deceleration chamber, the decoupling box is arranged on a side of the first housing away from the second housing, and the decoupling chamber is arranged in the decoupling box.

[0028] In one embodiment, the reducer assembly includes a drive motor, and the housing is provided with a fourth oil circuit and a fifth oil circuit, the fourth oil circuit is suitable for guiding the lubricating oil output by the oil pump to the stator of the drive motor, and the fifth oil circuit is suitable for guiding the lubricating oil output by the oil pump to the rotor of the drive motor.

[0029] In one embodiment, the reducer assembly includes an opening regulating valve, the inlet of the oil pump is connected to the chamber, the fifth oil circuit is connected to the outlet of the oil pump through the opening regulating valve, and the opening regulating valve is configured to adjust the opening of the fifth oil circuit and thereby adjust the flow rate of lubricating oil flowing to the fifth oil circuit.

[0030] A vehicle according to an embodiment of the present invention includes the reducer assembly according to any one of the above embodiments.

[0031] In the above vehicle, by providing an oil pump and a first oil circuit, the lubricating oil in the deceleration chamber can be directed to the decoupling chamber, and the decoupling mechanism in the decoupling chamber can be actively lubricated to avoid failure of the decoupling mechanism due to insufficient lubrication.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 It is a schematic structural diagram of a reducer assembly according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the arrangement of the first box body according to an embodiment of the present invention;

[0036] Figure 3 It is a schematic diagram of the arrangement of the second box body according to an embodiment of the present invention;

[0037] Figure 4 It is a schematic cross-sectional diagram of the oil circuit of the first tank body according to an embodiment of the present invention;

[0038] Figure 5 A schematic diagram of the oil circuits of the first tank and the second tank in an embodiment of the present invention;

[0039] Figure 6 Another schematic cross-sectional view of the oil path of the first housing according to an embodiment of the present invention;

[0040] Figure 7 is a schematic cross-sectional view of a reducer assembly according to an embodiment of the present invention;

[0041] Figure 8 for Figure 7 The enlarged schematic diagram of the D part;

[0042] Fig. 9 Another cross-sectional schematic diagram of a reducer assembly according to an embodiment of the present invention;

[0043] Fig.10 for Figure 8 The enlarged schematic diagram of part E in the middle;

[0044] Fig.11 is another cross-sectional schematic diagram of a reducer assembly according to an embodiment of the present invention;

[0045] Fig.12 It is a schematic diagram of the oil path flow module of the reducer assembly according to an embodiment of the present invention.

[0046] Description of main component reference numerals:

[0047] Reducer assembly 100;

[0048] Box body 11, containing groove 101, fixing groove 102, speed reduction chamber 103, decoupling chamber 105, first shaft hole 104, outlet 106 of first oil circuit 400;

[0049] The first housing 10, the oil pan 112, the first component 114, the second component 116, the magnet 117, the oil pump 118, the first filter 120, the oil return port 121, the oil cooler 122, the oil guide pipe 124, the fifth bearing seat 123, the first bearing seat 126, the oil baffle 128, the oil separator 130, the communication channel 132, the oil return hole 134, the oil injection pipe 136, the opening regulating valve 138, the fifth through hole 127, the first differential bearing 140, the second differential bearing 142, the first through hole 143, the first mounting hole 144, the second through hole 145, and the second mounting hole 146;

[0050] A second housing 20, a second bearing seat 212, and a fourth bearing seat 214;

[0051] Transmission assembly 30, differential 31, planetary gear structure 32, first output end 33, second output end 34, differential housing 35, differential gear 36;

[0052] Spindle assembly 40, spindle gear 41;

[0053] Countershaft assembly 50, countershaft gear 51;

[0054] Drive motor 60, motor shaft 612,

[0055] Decoupling box 70, decoupling mechanism 71;

[0056] The second oil circuit 200, the first flow channel 202, the first oil collecting groove 204, the first through hole 206, the third through hole 207, the oil guide structure 208, and the oil guide channel 209;

[0057] The third oil circuit 300, the second flow channel 302, the second oil collecting groove 304, the flow guide channel 305, the second through hole 306, the sixth through hole 308, the sixth bearing seat 310, and the oil guide groove 312;

[0058] A first oil passage 400, a third flow passage 402;

[0059] The fourth oil circuit 500, the first branch circuit 502, the second branch circuit 504, the first oil injection port 506, and the second oil injection port 508;

[0060] Fifth oil line 600;

[0061] Common oil circuit 700;

[0062] Sixth oil line 800;

[0063] First half shaft 90 , first end 91 , second end 92 .

[0064] Engaging sleeve 311 , connecting sleeve 321 , flange structure 1301 , sealing groove 1311 , oil seal 3011 , fixed bearing 3021 , first coupling tooth portion 3111 , second coupling tooth portion 3121 , gear tooth structure 3211 . DETAILED DESCRIPTION

[0065] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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 limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0069] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0070] Please refer to Figures 1 to 11 The embodiment of the present invention provides a reducer assembly 100 including a housing 11, a transmission assembly 30, a main shaft assembly 40, a secondary shaft assembly 50 and a drive motor 60. The reducer assembly 100 can be applied to vehicles including but not limited to pure electric vehicles, extended-range electric vehicles, hybrid vehicles and the like.

[0071] The housing 11 is provided with a chamber, and the chamber includes a deceleration chamber 103 and a decoupling chamber 105. In one embodiment, the housing 11 may include a first housing 10 and a second housing 20, the first housing 10 is connected to the second housing 20, the first housing 10 and the second housing 20 are enclosed to form the deceleration chamber 103, and the transmission assembly 30 is located in the deceleration chamber 103. The housing 11 also includes a decoupling box 70, and the decoupling chamber 105 is provided in the decoupling box 70. Optionally, the decoupling box 70 can be connected to the side of the first housing 10 away from the second housing 20, for example, the first housing 10 and the decoupling box 70 can be connected by bolts.

[0072] Optionally, the first box body 10 can be used as the front box body, the second box body 20 can be used as the rear box body, and the drive motor 60 can be accommodated in the inner cavity of the first box body 10. Figure 6The driving motor 60 includes a motor shaft 612 and a motor bearing, the motor shaft 612 is mounted on the motor bearing, and the motor bearing is mounted on the inner cavity side wall of the first housing 10. The spindle assembly 40 includes a spindle 41, and the spindle 41 can be connected to the motor shaft 612. The spindle 41 is connected to a first spindle bearing, a second spindle bearing, and a third spindle bearing, the first spindle bearing and the second spindle bearing are mounted on the first housing 10, and the third spindle bearing is mounted on the second housing 20.

[0073] The countershaft assembly 50 connects the main shaft assembly 40 and the transmission assembly 30. Specifically, the countershaft assembly 50 includes a countershaft and a countershaft gear 51. The countershaft gear 51 is mounted on the countershaft. The transmission assembly 30 may include a differential 31. The differential 31 includes a differential case 35 and a differential gear 36. The differential gear 36 is disposed in the differential case 35. The main shaft 41 is meshed with the countershaft gear 51, and the countershaft is meshed with the differential gear 36. When the drive motor 60 is running, the motor shaft 612 drives the main shaft 41 to rotate, and then the power of the drive motor 60 is transmitted to the transmission assembly 30 through the main shaft 41 and the countershaft assembly 50, so that the differential gear 36 and the differential case 35 rotate.

[0074] The secondary shaft is connected with a first secondary shaft bearing and a second secondary shaft bearing. The first secondary shaft bearing is installed in the first housing 10 , and the second secondary shaft bearing is installed in the second housing 20 .

[0075] In one embodiment, in order to lubricate the rotating pair in the reducer assembly 100, a passive lubrication method is adopted. Specifically, an oil pan 112 is provided at the bottom of the inner cavity of the first housing 10, and the oil pan 112 includes a first component 114 and a second component 116 connected to each other. The countershaft gear 51 can be partially located in the first component 114, and the differential gear 36 can be partially located in the second component 116. The lubricating oil in the oil pan 112 can be stirred and splashed when the countershaft gear 51 and the differential gear 36 rotate, and the rotating pair in the reducer assembly 100 is lubricated by splashing and lubricating. While lubricating the reducer assembly 100, the lubricating oil will take away the heat generated by the friction of the rotating pair and the debris generated by the friction between the gear pairs. When the lubricating oil returns to the bottom of the reducer assembly 100 due to gravity, the magnet 117 at the bottom of the inner cavity of the first housing 10 will absorb the debris to prevent the debris from returning to the rotating pairs again, causing wear between the rotating pairs, or even causing them to fail.

[0076] When the decoupling mechanism 71 is in the decoupling state, since the differential gear 36 does not rotate, it is impossible to stir up the lubricating oil to lubricate the decoupling mechanism 71. Therefore, it is necessary to provide an active lubrication method to actively lubricate the decoupling mechanism 71. Compared with the passive lubrication method, the active lubrication method is controllable and can meet the lubrication requirements of the decoupling mechanism 71.

[0077] Specifically, the housing 11 is provided with a first oil circuit 400, and the chamber includes a speed reduction chamber 103 and a decoupling chamber 105. The speed reducer assembly 100 includes an oil pump 118, which connects the speed reduction chamber 103 and the first oil circuit 400, and the oil pump 118 is suitable for guiding the lubricating oil in the speed reduction chamber 103 to the decoupling chamber 105 through the first oil circuit 400.

[0078] In the above-mentioned reducer assembly 100, by providing an oil pump 118 and a first oil circuit 400, the lubricating oil in the reduction chamber 103 can be directed to the decoupling chamber 105, and the decoupling mechanism 71 in the decoupling chamber 105 can be actively lubricated to avoid failure of the decoupling mechanism 71 due to insufficient lubrication.

[0079] Optionally, the oil pump 118 can be installed in the first housing 10 or the second housing 20, and an oil suction port is provided in the deceleration chamber 103. The inlet of the oil pump 118 can be connected to the deceleration chamber 103 through the oil suction port. The oil pump 118 sucks the lubricating oil accumulated in the deceleration chamber 103 from the oil suction port and then delivers it to the first oil circuit 400. The lubricating oil is guided to the decoupling chamber 105 through the first oil circuit 400 to actively lubricate the decoupling mechanism 71 in the decoupling chamber 105. Optionally, the oil pump 118 can be an electronic oil pump.

[0080] Please combine Figure 2 In the figure, the oil suction port can be set at the bottom of the inner cavity of the first box body 10, and the side wall of the first box body 10 is provided with an oil return port 121. The inner cavity of the first box body 10 is connected to the inner cavity of the second box body 20 through the oil return port 121. Then, the oil pump 118 can suck the lubricating oil accumulated in the first box body 10 and the second box body 20 through the oil suction port.

[0081] Optionally, in order to effectively filter the lubricating oil, improve the quality of the lubricating oil, extend the service life of the oil pump 118, and reduce the replacement frequency of the lubricating oil, the reducer assembly 100 includes a first filter 120 and a second filter (not shown), and the first filter 120 and the second filter can be installed in the first housing 10. The inlet of the first filter 120 can be connected to the outlet of the oil pump 118, and the outlet of the first filter 120 can be connected to the inlet of each oil circuit. The second filter can be arranged at the oil suction port, or between the oil suction port and the inlet of the oil pump 118. The first filter 120 can be a fine filter, and the second filter can be a coarse filter. The lubricating oil filtered by coarse filtration and fine filtration can effectively lubricate the reducer assembly 100, improve the service life of components such as bearings, gears, splines, and decoupling mechanisms 71, and reduce the replacement frequency of the lubricating oil of the reducer assembly 100; reduce component failures and quality problems caused by poor lubrication, improve the economy and reliability of the vehicle, and alleviate after-sales complaints.

[0082] Optionally, in order to cool the various components of the reducer assembly 100 more efficiently, the reducer assembly 100 includes an oil cooler 122. The oil cooler 122 can be installed in the second box body 20. The oil cooler 122 is used to cool the lubricating oil, so that the cooling of the drive motor 60 and other components is more sufficient, thereby extending the service life of the drive motor 60 and other components. Optionally, the outlet of the first filter 120 can be connected to the inlet 125 of the oil guide pipe 124, and the inlet of the oil cooler 122 is connected to the outlet of the oil guide pipe 124. The lubricating oil after fine filtration can enter the oil cooler 122 for cooling. Optionally, a part of the lubricating oil output by the first filter 120 can flow to the oil cooler 122 through the oil guide pipe 124 for cooling and diversion, and the other part can flow to the decoupling chamber 105. Optionally, the lubricating oil output by the first filter 120 can all flow to the oil cooler 122, and the cooled lubricating oil output from the oil cooler 122 is diverted to each oil circuit. Figure 5 In the illustrated embodiment, the oil circuit of the oil cooler 122 is schematically shown in area A. It is understandable that the oil cooler 122 may also be disposed at other locations, and is not limited to being connected to the outlet of the first filter 120 .

[0083] In one embodiment, the transmission assembly 30 has a first output end 33, the reducer assembly 100 includes a first half shaft 90, the first half shaft 90 has a first end 91 and a second end 92, the reduction chamber 103 and the decoupling chamber 105 are connected to each other, the first end 91 is in the reduction chamber 103, the second end 92 is in the decoupling chamber 105, the first end 91 is connected to the first output end 33, and the second end 92 is suitable for being connected to the output shaft. The decoupling mechanism 71 is arranged in the decoupling chamber 105 and connected between the second end 92 and the output shaft, and the decoupling mechanism 71 is suitable for achieving coupling and separation between the first half shaft 90 and the output shaft.

[0084] It should be noted that coupling refers to the phenomenon that two or more systems or two forms of motion influence each other and even combine through interaction. The decoupling state is decoupling. It can be understood that the reducer assembly 100 is used to provide power for the vehicle. The reducer assembly 100 is connected to the whole vehicle through the first half shaft 90, the decoupling mechanism 71 and the output shaft and transmits power. The reducer assembly 100 is a power output mechanism, and the whole vehicle is a running mechanism. The power connection between the reducer assembly 100 and the whole vehicle is a coupling relationship. The decoupling mechanism 71 is used to decouple or close the power connection between the reducer assembly 100 and the whole vehicle. When a dual-power source drive vehicle is driven by a single power source, the reducer assembly 100 that is not involved in the drive will idle as the vehicle travels. At this time, the decoupling mechanism 71 can timely decouple the first half shaft 90 from the output shaft, that is, the decoupling mechanism 71 can timely disconnect the transmission between the reducer assembly 100 and the whole vehicle, thereby effectively reducing the energy consumption of the whole vehicle.

[0085] Since the state of the vehicle changes frequently when in use, the working conditions of the decoupling mechanism 71 also change frequently during operation. There is friction between the structural components in the decoupling mechanism 71. The reducer assembly 100 of this embodiment is provided with a first oil circuit 400 in the housing 11. The first oil circuit 400 can guide the lubricating oil in the reduction chamber 103 to the decoupling chamber 105, thereby effectively and actively lubricating the decoupling mechanism 71, making it less likely for the decoupling mechanism 71 to dry-grind during operation, and making the operation of the decoupling mechanism 71 more stable and reliable.

[0086] In one embodiment, the differential 31 includes a planetary gear structure 32, and the differential gear 36 can be connected to the first end 91 of the first half shaft 90 through the planetary gear structure 32, and the planetary gear structure 32 includes a first output end 33. Further, the first half shaft 90 is coaxially arranged with the differential gear 36. In this way, when the reducer assembly 100 is running, the main shaft 41 drives the countershaft gear 51 to rotate, and the countershaft gear 51 drives the differential gear 36 to rotate, and then transmits power to the first half shaft 90 through the differential gear 36 and the planetary gear structure 32. The first half shaft 90 can be connected to the first output end 33 through the differential housing 35, for example, the first output end 33 has a spline, and the first output end 33 is connected to the first end 91 through the spline. The transmission assembly 30 transmits power to the first half shaft 90 in a gear transmission manner, and the transmission is accurate, efficient, and reliable.

[0087] In one embodiment of the present invention, reference Figures 7 to 11 The decoupling mechanism 71 may include an engagement sleeve 311 , a connecting sleeve 321 and a fixed bearing 3021 .

[0088] The engagement sleeve 311 extends along the axis of the first semi-shaft 90 and has a first coupling tooth portion 3111 and a second coupling tooth portion 3121 ; the second end 92 can be selectively coupled with the first coupling tooth portion 3111 , or the second coupling tooth portion 3121 can be selectively coupled with and separated from the output shaft.

[0089] The second end 92 of the first semi-shaft 90 and the first coupling tooth portion 3111 of the engagement sleeve 311 are arranged to be coupled. When the second end 92 of the first semi-shaft 90 and the first coupling tooth portion 3111 of the engagement sleeve 311 are coupled, the first semi-shaft 90 can transmit power to the engagement sleeve 311. When the second end 92 of the first semi-shaft 90 and the first coupling tooth portion 3111 of the engagement sleeve 311 are separated, the first semi-shaft 90 and the engagement sleeve 311 are disconnected from the transmission. In this way, by controlling the coupling state of the second end 92 of the first semi-shaft 90 and the first coupling tooth portion 3111 of the engagement sleeve 311, the transmission state conversion between the first semi-shaft 90 and the engagement sleeve 311 can be conveniently realized. Optionally, the second end 92 of the first semi-shaft 90 and the first coupling tooth portion 3111 of the engagement sleeve 311 can be connected by a spline, and the second end 92 of the first semi-shaft 90 and the first coupling tooth portion 3111 of the engagement sleeve 311 can also be connected by tooth meshing.

[0090] The second coupling tooth portion 3121 and the output shaft are set to be in a coupling relationship. When the second coupling tooth portion 3121 is coupled to the output shaft, the meshing sleeve 311 can transmit power to the output shaft. When the second coupling tooth portion 3121 is separated from the output shaft, the meshing sleeve 311 and the output shaft are disconnected from the transmission. Since the first coupling tooth portion 3111 and the second coupling tooth portion 3121 are both arranged on the meshing sleeve 311, the meshing state of the meshing sleeve 311, the first half shaft 90 and the output shaft are synchronized. In this way, by controlling the coupling state of the meshing sleeve 311, the output shaft and the first half shaft 90, the first half shaft 90 and the output shaft can be easily decoupled. Of course, the first coupling tooth portion 3111 of the engaging sleeve 311 can be set so that the engaging sleeve 311 always remains coupled with the first half-shaft 90 when it moves axially along the first half-shaft 90, and the second coupling tooth portion 3121 can be set to be selectively coupled with the output shaft. Alternatively, the first coupling tooth portion 3111 of the engaging sleeve 311 can be set to be selectively coupled with the first half-shaft 90, and the second coupling tooth portion 3121 can be set so that the engaging sleeve 311 always remains coupled with the output shaft when it moves axially along the first half-shaft 90, so as to control the decoupling and coupling of the first half-shaft 90 and the output shaft.

[0091] One end of the connecting sleeve 321 extends into the engagement sleeve 311 and can selectively couple with and separate from the second coupling tooth portion 3121 of the engagement sleeve 311. The other end of the connecting sleeve 321 (eg Fig. 9 and Fig.10The end of the connecting sleeve 321 far from the first semi-axle 90 shown in FIG. 3 is supported in the fixed bearing 3021, and the output shaft of the vehicle is fixedly connected to the connecting sleeve 321. Therefore, the connecting sleeve 321 is meshed with the engagement sleeve 311, and the output shaft is fixedly connected to the connecting sleeve 321. When the reducer assembly 100 is running, the first semi-axle 90 can transmit power to the output shaft by meshing with the engagement sleeve 311 and the engagement sleeve 311 is meshed with the connecting sleeve 321 to drive the vehicle. The meshing transmission method makes the transmission efficiency between the reducer assembly 100 and the whole vehicle high, and the transmission is stable and reliable.

[0092] The connecting sleeve 321 can be selectively coupled and separated with the second coupling tooth portion 3121 of the meshing sleeve 311. When the connecting sleeve 321 and the second coupling tooth portion 3121 are in a coupled state, the meshing sleeve 311 can transmit power to the connecting sleeve 321. When the connecting sleeve 321 and the second coupling tooth portion 3121 are in a separated state, the connecting sleeve 321 and the meshing sleeve 311 are disconnected from each other. In this way, by controlling the coupling state of the connecting sleeve 321 and the meshing sleeve 311, the transmission state conversion between the connecting sleeve 321 and the meshing sleeve 311 can be conveniently realized. Optionally, the connecting sleeve 321 and the meshing sleeve 311 can be connected by a spline, or the connecting sleeve 321 and the meshing sleeve 311 can be connected by a tooth meshing mode.

[0093] In one embodiment of the present invention, Fig.10 As shown, one end of the connecting sleeve 321 meshing with the second coupling tooth portion 3121 is provided with a plurality of gear teeth structures 3211, and the plurality of gear teeth structures 3211 are arranged at intervals along the axial direction of the connecting sleeve 321, and the second coupling tooth portion 3121 is provided with meshing teeth accordingly. Thus, the connecting sleeve 321 and the meshing sleeve 311 are connected in a tooth meshing manner, the connection is convenient and reliable, and the matching positioning of the connecting sleeve 321 and the meshing sleeve 311 is more accurate.

[0094] In one embodiment, the chamber includes a first shaft hole 104 , the deceleration chamber 103 and the decoupling chamber 105 are connected through the first shaft hole 104 , the first half shaft 90 passes through the first shaft hole 104 , and the outlet 106 of the first oil circuit 400 is connected to the first shaft hole 104 .

[0095] Therefore, the first shaft hole 104 is provided in the housing 11, and the first end 91 of the first half shaft 90 in the decoupling chamber 105 passes through the first shaft hole 104 and extends into the deceleration chamber 103 to be connected with the first output end 33 of the transmission assembly 30, which has a simple structure and convenient connection. The first shaft hole 104 connects the deceleration chamber 103 with the decoupling chamber 105, and the lubricating oil in the deceleration chamber 103 can flow from the first shaft hole 104 to the decoupling chamber 105 to lubricate the decoupling mechanism 71. When the reducer assembly 100 is in operation, the transmission assembly 30 in the deceleration chamber 103 operates, and the transmission assembly 30 drives the first half shaft 90 to rotate, thereby transmitting power to the decoupling mechanism 71.

[0096] In one embodiment, see Figures 7 to 9 The reducer assembly 100 includes a first differential bearing 140 , the transmission assembly 30 includes a differential 31 , the differential 31 includes a differential housing 35 , the first differential bearing 140 is disposed in the first shaft hole 104 , and the differential housing 35 is supported on the first differential bearing 140 .

[0097] Therefore, the first differential bearing 140 is provided to support and fix the differential housing, which has a simple structure and a good fixing effect; the first differential bearing 140 is provided in the first shaft hole 104, and the outlet 106 of the first oil circuit 400 is connected to the first shaft hole 104, so that the lubricating oil can flow from the deceleration chamber 103 along the first oil circuit 400 and directly flow out from the outlet 106 of the first oil circuit 400 to the decoupling chamber 105, thereby making it more convenient to guide the lubricating oil to the decoupling chamber 105, thereby improving the lubricating effect of the lubricating oil on the decoupling mechanism 71 in the decoupling chamber 105.

[0098] In some examples of the present invention, Fig.11 As shown, one end of the decoupling box 70 can extend into the first shaft hole 104, and a sealing groove 1311 is formed on the outer surface of one end of the decoupling box 70. The sealing groove 1311 extends in a ring shape along the circumference of the decoupling box 70. A sealing member is arranged in the sealing groove 1311, and the sealing member is in sealing contact with the peripheral wall of the first shaft hole 104. An oil seal 3011 is arranged at the other end of the decoupling box 70, and the oil seal 3011 is used to seal the lubricating oil in the decoupling chamber 105. Therefore, the structure is simple and the sealing effect is good.

[0099] In one embodiment, the reducer assembly 100 also includes an oil separator 130, which is installed in the first axial hole 104, the first differential bearing 140 is located on the side of the oil separator 130 facing the reduction chamber 103, and the outlet 106 of the first oil circuit 400 is located on the side of the oil separator 130 facing the decoupling mechanism 71.

[0100] Therefore, the lubricating oil in the deceleration chamber 103 and the decoupling chamber 105 can be separated by the oil separator 130 , thereby ensuring the amount of lubricating oil in the first differential bearing 140 and the decoupling mechanism 71 .

[0101] Specifically, the lubricating oil in the deceleration chamber 103 can flow to the side of the oil separator 130 facing the deceleration chamber 103 to lubricate the first differential bearing 140. The lubricating oil in the deceleration chamber 103 can flow to the side of the oil separator 130 facing the decoupling chamber 105 through the first oil passage 400, and then flow into the decoupling mechanism 71 in the decoupling chamber 105 to actively lubricate the decoupling mechanism 71. The lubricating oil of the first differential bearing 140 and the decoupling mechanism 71 can be separated by the oil separator 130, thereby ensuring the amount of lubricating oil of both, and thus ensuring the lubrication effect.

[0102] Optionally, the first oil circuit 400 can be an oil circuit formed by a flow channel arranged in the wall of the box body 11, and the inlet of the first oil circuit 400 is connected to the outlet of the oil pump 118. The outlet 106 of the first oil circuit 400 is located on the side of the oil separator 130 facing the decoupling mechanism 71. The lubricating oil output by the oil pump 118 can flow directly into the decoupling chamber 105 through the first oil circuit 400, so as to actively lubricate the decoupling mechanism 71, and the lubrication effect is better and controllable.

[0103] In a specific example of the present invention, Figure 7 and Figure 8 As shown, the inner wall surface of the first shaft hole 104 at one end facing the speed reduction chamber 103 may be provided with a receiving groove 101, and the receiving groove 101 extends in a ring shape along the circumference of the first shaft hole 104. The first differential bearing 140 is arranged in the receiving groove 101, and the radial outer end of the oil separator 130 extends into the receiving groove 101 and abuts against the wall surface of the side of the receiving groove 101 away from the speed reduction chamber 103. Therefore, the receiving groove 101 is provided at the first shaft hole 104, and the first differential bearing 140 is provided in the receiving groove 101, so that the first differential bearing 140 can be conveniently and reliably installed and positioned, and the radial outer end of the oil separator 130 extends into the receiving groove 101 and abuts against the wall surface of the side of the receiving groove 101 away from the speed reduction chamber 103, so that the radial outer end of the oil separator 130 and the wall surface of the receiving groove 101 have good sealing performance, so that the lubricating oil can be better accumulated in the decoupling chamber 105. Preferably, the accommodating groove 101 is connected with the deceleration chamber 103 along the axial direction of the first shaft hole 104. Optionally, the oil separator 130 can be provided in an annular shape, and the first semi-shaft 90 is provided with the oil separator 130.

[0104] Further, refer to Figure 7 and Figure 8As shown, a fixing groove 102 may be provided on the wall of the accommodating groove 101 facing the decoupling cavity 105 , and a flange structure 1301 is provided on the radial outer edge of the oil separator 130 , and the flange structure 1301 of the oil separator 130 is fixed in the fixing groove 102 . Specifically, the thickness of the fixing groove 102 along the axial direction of the first shaft hole 104 is the same as the thickness of the oil separator 130, and the flange structure 1301 of the oil separator 130 and the annular body of the oil separator 130 have a certain spacing in the axial direction of the oil separator 130, so that when the first differential bearing 140 is fixed in the receiving groove 101, the side of the first differential bearing 140 facing the decoupling chamber 105 can be well abutted against the wall surface of the receiving groove 101, so that the first differential bearing 140 can be fixed more stably and reliably. At the same time, the first differential bearing 140 can play a good role in limiting and fixing the oil separator 130 in the axial direction of the first shaft hole 104. There is a certain gap between the annular body of the oil separator 130 and the first differential bearing 140, which facilitates the flow of lubricating oil in the first shaft hole 104 and enables the lubricating oil in the decoupling chamber 105 to flow through the first differential bearing 140 from the gap and flow back to the deceleration chamber 103.

[0105] In one embodiment, the reducer assembly 100 includes a first differential bearing 140 , the transmission assembly 30 includes a differential 31 , the differential 31 includes a differential housing 35 , and the differential housing 35 is supported on the first differential bearing 140 .

[0106] The housing 11 has a first shaft hole 104, through which the deceleration chamber 103 and the decoupling chamber 105 are connected, through which the first half shaft 90 passes, and a first bearing seat 126 is formed at one end of the first shaft hole 104 adjacent to the deceleration chamber 103, and a first differential bearing 140 is supported on the first bearing seat 126;

[0107] The housing 11 is provided with a second oil circuit, and the second oil circuit is suitable for guiding the lubricating oil in the speed reduction chamber 103 to the first bearing seat 126 to lubricate the first differential bearing 140 .

[0108] Thus, the first differential bearing 140 can be actively lubricated.

[0109] Specifically, in one embodiment, the differential 31 includes a differential case 35 , and the differential case 35 is supported on the first differential bearing 140 .

[0110] Optionally, the second oil circuit can be an oil circuit formed by a flow channel arranged in the wall of the housing 11, the inlet of the second oil circuit is connected to the deceleration chamber 103, and the outlet of the second oil circuit is connected to the first bearing seat 126. The lubricating oil in the deceleration chamber 103 can flow to the first bearing seat 126 through the second oil circuit to lubricate the first differential bearing 140, thereby ensuring the lubrication effect of the first differential bearing 140.

[0111] In one embodiment, the reducer assembly 100 includes an oil separator 130, which is installed in the first shaft hole 104. Therefore, the amount of lubricating oil in the reduction chamber 103 and the decoupling chamber 105 can be balanced through the oil separator 130.

[0112] Specifically, the oil separator 130 is provided with a connecting passage 132, and the deceleration chamber 103 and the decoupling chamber 105 are connected through the connecting passage 132. When the amount of lubricating oil in the deceleration chamber 103 is large, the lubricating oil in the deceleration chamber 103 can flow from the connecting passage 132 to the decoupling chamber 105. When the amount of lubricating oil in the decoupling chamber 105 is large, the lubricating oil in the decoupling chamber 105 can flow from the connecting passage 132 to the deceleration chamber 103.

[0113] In addition, an oil return hole 134 may be provided at the bottom of the oil separator 130 so that excess lubricating oil in the decoupling mechanism 71 can flow back into the deceleration chamber 103 .

[0114] In one embodiment, see Figure 2 The second oil circuit includes a first oil collecting groove 204 arranged in the reduction chamber 103 and an oil guiding structure 208 arranged in the housing 11. The oil guiding structure 208 has an oil guiding channel 209. The bottom wall of the first oil collecting groove 204 is provided with a first through hole. The first oil collecting groove 204 is suitable for collecting the lubricating oil dropped in the reduction chamber 103. The inlet of the oil guiding channel 209 is connected to the first through hole. The outlet of the oil guiding channel 209 is suitable for guiding the lubricating oil in the oil guiding channel 209 to the first bearing seat 126 to lubricate the first differential bearing 140.

[0115] Thus, the first differential bearing 140 can be lubricated.

[0116] Specifically, in one embodiment, the second housing 20 is provided with a first flow channel 202, the first flow channel 202 is connected to the outlet of the oil cooler 122 and the deceleration chamber 103, the first flow channel 202 is suitable for spraying the lubricating oil output by the oil cooler 122 into the deceleration chamber 103, and spraying and lubricating the various components in the housing 11, the first differential bearing 140 is arranged in the first bearing seat 126, and the lubricating oil sprayed by the first flow channel 202 can be actively lubricated to the first differential bearing 140 through the first oil collecting groove 204 and the oil guide channel 209, and the lubrication is controllable and has a good effect. Optionally, the first flow channel 202 can be a flow channel arranged in the surrounding wall of the second housing 20. Thus, by supplying oil through the oil pump 118, the first differential bearing 140 can be actively lubricated.

[0117] The oil guide structure 208 is disposed in the first housing 10. In one embodiment, the oil guide structure 208 may be a groove structure provided on the inner wall of the first housing 10. The lubricating oil flowing out of the first through hole 206 may be injected into the oil guide channel 209 of the oil guide structure 208. The oil guide channel 209 guides the lubricating oil to the first bearing seat 126 to lubricate the first differential bearing 140. Optionally, the reducer assembly 100 includes an oil baffle 128. The oil baffle 128 is provided with an oil guide channel 209 near the outlet cover of the oil guide channel 209. In this way, the lubricating oil can be prevented from overflowing the oil guide channel 209, thereby ensuring the amount of lubricating oil for lubricating the first differential bearing 140.

[0118] Furthermore, the lubricating oil sprayed by the first flow channel 202 can lubricate the third main shaft bearing and the second secondary shaft bearing of the second housing 20. The second secondary shaft bearing is installed on the fourth bearing seat 214 of the second housing 20.

[0119] The lubricating oil sprayed from the first flow channel 202 or other flow channels, and / or the lubricating oil splashed by the gears can be partially collected by the first oil collecting groove 204 when falling. The bottom wall of the first oil collecting groove 204 is provided with a first through hole 206. The lubricating oil collected in the first oil collecting groove 204 can flow to the oil guide channel 209 through the first through hole 206, and then flow to the first bearing seat 126 through the oil guide channel 209, so as to actively lubricate the first differential bearing 140.

[0120] Optionally, the first oil circuit 400 includes a third flow channel 402 arranged in the first box body 10, and the third flow channel 402 is connected to the outlet of the first filter 120. The third flow channel 402 is suitable for spraying the lubricating oil output by the first filter 120 into the deceleration chamber 103. The first oil collecting tank 204 can also collect the lubricating oil sprayed by the third flow channel 402, thereby increasing the amount of lubricating oil for the decoupling mechanism 71.

[0121] Optionally, a third through hole 207 is provided on the bottom wall of the first oil collecting trough 204 , and the first oil collecting trough 204 is suitable for guiding the lubricating oil to the third bearing seat 139 through the third through hole 207 to lubricate the first main shaft bearing and / or the second main shaft bearing installed on the third bearing seat 139 .

[0122] Optionally, the third bearing seat 139 is provided with a fourth through hole 141, the first housing 10 is provided with a fifth bearing seat 123, the fifth bearing seat 123 is provided with a fifth through hole 127, the fourth through hole 141 is suitable for guiding the lubricating oil to the fifth through hole 127, the lubricating oil can enter the fifth bearing seat 123, and actively lubricate the first secondary shaft bearing.

[0123] In one embodiment, the second oil circuit includes a first flow channel 202 disposed in the housing 11 , the first flow channel 202 connects the outlet of the oil pump 118 and the deceleration chamber 103 , and the first flow channel 202 is suitable for spraying the lubricating oil output by the oil pump 118 into the first oil collecting tank 204 .

[0124] In this way, the lubricating oil can be sprayed into the housing 11 through the first flow channel 202 of the second housing 20 .

[0125] Specifically, the first flow channel 202 can spray the lubricating oil output by the oil pump 118 into the housing 11, and spray lubricate the components in the housing 11. The first differential bearing 140 is arranged on the first bearing seat 126. The lubricating oil sprayed by the first flow channel 202 can actively lubricate the first differential bearing 140 through the first oil collecting groove 204 and the oil guide channel 209, and the lubrication is controllable and has a good effect. Optionally, the first flow channel 202 sprays the lubricating oil into the deceleration chamber.

[0126] In one embodiment, the speed reducer assembly 100 includes a second differential bearing 142, the transmission assembly 30 includes a differential 31, the differential 31 includes a differential housing 35, and the differential housing 35 is supported on the second differential bearing 142;

[0127] A second bearing seat 212 is formed in the housing 11, and the second differential bearing 142 is disposed in the second bearing seat 212. The housing 11 is provided with a third oil circuit, which is suitable for guiding the lubricating oil in the speed reduction chamber 103 to the second bearing seat 212 to lubricate the second differential bearing 142.

[0128] Thus, the second differential bearing 142 can be lubricated.

[0129] Specifically, in one embodiment, the differential 31 includes a differential housing 35, the differential housing 35 is supported on the second differential bearing 142, and the differential 31 has a second output end 34. Optionally, the third oil circuit can be an oil circuit formed by a flow channel provided in the surrounding wall of the housing 11, the inlet of the third oil circuit is connected to the oil pump 118, and the outlet of the third oil circuit is connected to the second bearing seat 212. The lubricating oil in the deceleration chamber 103 can flow to the second bearing seat 212 through the oil pump 118 and the third oil circuit to lubricate the second differential bearing 142, thereby ensuring the lubrication effect of the second differential bearing 142. Therefore, the second differential bearing 142 can be actively lubricated by supplying oil through the oil pump.

[0130] The second half shaft may pass through the differential housing 35 and be connected to the second output end 34 . For example, the second output end 34 has a spline, and the second half shaft is connected to the second output end 34 via the spline.

[0131] In one embodiment, the third oil circuit includes a second flow channel 302 disposed in the housing 11 , the second flow channel connects the outlet of the oil pump 118 and the second bearing seat 212 , and the second flow channel 302 is suitable for spraying the lubricating oil output by the oil pump 118 to the second bearing seat 212 .

[0132] In this way, the lubricating oil can be sprayed to the second bearing seat 212 through the second flow channel 302 .

[0133] Specifically, the second flow channel 302 can guide the lubricating oil output by the oil pump 118 to the second bearing seat 212, and can actively lubricate the second differential bearing 142, with controllable lubrication and good effect. Optionally, the second flow channel 302 can be a flow channel arranged in the surrounding wall of the box body 11.

[0134] In one embodiment, see Figure 3 The third oil circuit includes a second oil collecting groove 304 arranged in the reduction chamber 103. The bottom wall of the second oil collecting groove 304 is provided with a second through hole 306. The second oil collecting groove 304 is suitable for collecting the lubricating oil dropped in the reduction chamber 103 and guiding the lubricating oil to the second bearing seat 212 through the second through hole 306.

[0135] Thus, the second differential bearing 142 can be actively lubricated.

[0136] Specifically, in one embodiment, the lubricating oil sprayed from the second flow channel 302 or other flow channels, and / or the lubricating oil splashed by the gears can be partially collected by the second oil collecting tank 304 when dripping. The bottom wall of the second oil collecting tank 304 is provided with a second through hole 306. The lubricating oil collected in the second oil collecting tank 304 can flow to the second bearing seat 212 through the second through hole and the guide channel 305, so as to actively lubricate the second differential bearing 142.

[0137] Optionally, in this embodiment, the outlet 307 of the guide channel 305 faces the outlet of the second flow channel 302, so that the lubricating oil flowing out of the second oil collecting tank 304 and the lubricating oil flowing out of the second flow channel 302 merge into the second bearing seat 212, thereby increasing the amount of lubricating oil lubricating the second differential bearing 142 and actively lubricating the second differential bearing 142.

[0138] Optionally, a sixth through hole 308 is provided on the bottom wall of the second oil collecting groove 304. The sixth through hole 308 can guide the lubricating oil in the second oil collecting groove 304 to the sixth bearing seat 310, and actively lubricate the third main shaft bearing installed on the sixth bearing seat 310.

[0139] Optionally, the second housing 20 is provided with an oil guide groove 312, which connects the sixth bearing seat 310 and the fourth bearing seat 214. The lubricating oil of the sixth bearing seat 310 can be guided to the fourth bearing seat 214 through the oil guide groove 312 to actively lubricate the second secondary shaft bearing installed on the fourth bearing seat 214.

[0140] Optionally, see Fig.11 The first bearing seat 126 is provided with a first through hole 143, the differential housing 35 is provided with a first mounting hole 144, the first through hole 143 is coaxially arranged with the first mounting hole 144, the differential housing 35 passes through the first through hole 143, the first half shaft 90 passes through the first mounting hole 144 and is connected to the first output end 33. The outlet of the oil guide channel 209 can also lubricate the joint between the first mounting hole 144 of the differential housing 35 and the first half shaft 90, such as the spline joint.

[0141] The second bearing seat 212 is provided with a second through hole 145, the differential housing 35 is provided with a second mounting hole 146, the second through hole 145 is coaxially arranged with the second mounting hole 146, the differential housing 35 passes through the second through hole 145, the second half shaft (not shown) passes through the second mounting hole 146 and is connected to the second output end 34. The second flow channel 302 and the outlet 307 of the guide channel 305 can also lubricate the joint between the second mounting hole 146 of the differential housing 35 and the second half shaft, such as the spline joint.

[0142] In one embodiment, the second oil collecting tank 304 and the first oil collecting tank 204 can be connected together to form a receiving tank, and the bottom wall of the receiving tank is provided with various through holes so that the lubricating oil in the receiving tank can flow to each lubricated object. Optionally, the notches of the first oil collecting tank 204 and the second oil collecting tank 304 face upward to facilitate the collection of sprayed and splashed lubricating oil.

[0143] In one embodiment, the third oil circuit 300 includes a second flow channel 302 disposed in the housing 11, the second flow channel 302 communicates with the outlet of the oil pump 118 and the second bearing seat 212, and the second flow channel 302 is suitable for spraying the lubricating oil output by the oil pump 118 to the second bearing seat 212. The third oil circuit 300 includes a second oil collecting groove 304 disposed in the deceleration chamber 103, the bottom wall of the second oil collecting groove 304 is provided with a second through hole 306, the second through hole 306 communicates with the second flow channel 302, the second oil collecting groove 304 is suitable for collecting the lubricating oil splashed in the deceleration chamber 103, and guides the lubricating oil through the second flow channel 302 to the second bearing seat 212 through the second through hole 306. Thus, the second differential bearing 142 on the second bearing seat 212 can be actively lubricated (oil pump oil supply) and passively lubricated (splash lubrication) by using the same oil circuit.

[0144] In one embodiment, the housing 11 includes a first housing 10, a second housing 20 and a decoupling box 70. The first housing 10 and the second housing 20 form a deceleration chamber 103. The decoupling box 70 is disposed on a side of the first housing 10 away from the second housing 20. A decoupling chamber 105 is disposed in the decoupling box 70.

[0145] Thus, the decoupling mechanism 71 can be easily maintained.

[0146] Optionally, the first housing 10 , the second housing 20 and the decoupling box 70 may be connected by bolts to facilitate maintenance of the reducer assembly 100 .

[0147] In one embodiment, in order to actively lubricate the drive motor 60, the reducer assembly 100 is provided with a fourth oil circuit 500 and a fifth oil circuit 600, the fourth oil circuit 500 is suitable for guiding the lubricating oil in the reduction chamber to the stator of the drive motor 60, and the fifth oil circuit 600 is suitable for guiding the lubricating oil in the reduction chamber to the rotor of the drive motor 60.

[0148] Optionally, the fourth oil passage 500 may include at least one of a flow passage provided in the surrounding wall of the first housing 10 , a flow passage provided in the oil pipe, and a flow passage provided in the surrounding wall of the second housing 20 .

[0149] The fourth oil circuit 500 is suitable for guiding the lubricating oil in the reduction chamber to the stator of the drive motor 60. Specifically, the reducer assembly 100 includes a plurality of oil injection pipes 136, and the plurality of oil injection pipes 136 can be arranged at intervals along the circumferential direction of the stator of the drive motor 60. The fourth oil circuit 500 includes a flow channel arranged in the oil injection pipe 136, and the side wall of the oil injection pipe 136 is provided with an oil injection hole connected to the flow channel. The lubricating oil in the oil injection pipe 136 can be sprayed onto the stator of the drive motor 60 through the oil injection hole to actively lubricate the stator.

[0150] Optionally, the fourth oil passage 500 is connected to an outlet of the oil cooler 122 .

[0151] Optionally, the fifth oil passage 600 may include at least one of a flow passage provided in the surrounding wall of the first housing 10 , a flow passage provided in the oil pipe, and a flow passage provided in the surrounding wall of the second housing 20 .

[0152] The fifth oil circuit 600 is suitable for guiding the lubricating oil in the deceleration chamber to the rotor of the drive motor 60. Specifically, the rotor of the drive motor 60 includes a hollow motor shaft 612, and the fifth oil circuit 600 may include a flow channel arranged in the motor shaft 612. The side wall of the motor shaft 612 is provided with an oil spray hole, and the lubricating oil in the motor shaft 612 can be sprayed onto the rotor of the drive motor 60 through the oil spray hole to actively lubricate the rotor. Active lubrication of the rotor of the drive motor 60 includes but is not limited to active lubrication of components such as the spline teeth of the motor shaft 612. The fifth oil circuit 600 is also suitable for guiding the lubricating oil to the third main shaft bearing on the second housing.

[0153] In one embodiment, in order to configure the flow direction of the lubricating oil according to the heat dissipation and lubrication requirements, the reducer assembly 100 includes an opening regulating valve 138, and the fifth oil circuit 600 is connected to the outlet of the oil pump through the opening regulating valve 138. The opening regulating valve is configured to adjust the opening of the fifth oil circuit and thereby adjust the flow rate of the lubricating oil flowing to the fifth oil circuit.

[0154] Specifically, in one embodiment, the opening regulating valve 138 is connected to the outlet of the oil cooler 122. When the decoupling mechanism 71 is in the coupled state, the reducer assembly 100 mainly ensures the heat dissipation of the drive motor 60. In the low-speed stage, the opening regulating valve 138 can be controlled to be closed so that the fifth oil circuit 600 is not connected to the outlet of the oil cooler 122. The lubricating oil flowing out of the oil cooler 122 will not enter the fifth oil circuit 600. The lubricating oil flowing out of the oil cooler 122 can enter the fourth oil circuit 500 to actively lubricate and dissipate heat for the stator of the drive motor 60, thereby improving the motor efficiency. In the high-speed stage, the opening regulating valve 138 can be controlled to open and the opening of the fifth oil circuit 600 can be controlled to adjust the amount of lubricating oil in the fifth oil circuit 600, so that the fifth oil circuit 600 is connected to the outlet of the oil cooler 122. The lubricating oil flowing out of the oil cooler 122 can enter the fifth oil circuit 600 to lubricate and dissipate heat for the rotor of the drive motor 60. Figure 5 In the illustrated embodiment, the oil circuit controlled by the opening regulating valve 138 is schematically shown in area B.

[0155] When the decoupling mechanism 71 is in the decoupling state, the opening regulating valve 138 can be controlled to open, so that the fifth oil circuit 600 is connected to the outlet of the oil cooler 122, and the lubricating oil flowing out of the oil cooler 122 can enter the fifth oil circuit 600 to ensure lubrication and heat dissipation of the stator and rotor of the drive motor 60. Optionally, the opening regulating valve 138 can be a solenoid valve.

[0156] In one embodiment, to reduce the number of outlets of the oil cooler 122 , the reducer assembly 100 includes a common oil circuit 700 , and the second oil circuit 200 , the fourth oil circuit 500 and the opening regulating valve 138 are connected to the outlet of the oil cooler 122 via the common oil circuit 700 .

[0157] Specifically, the second oil circuit 200, the fourth oil circuit 500 and the opening regulating valve 138 are connected to the outlet of the oil cooler 122 through the common oil circuit 700, and there is no need to set a separate outlet of the oil cooler 122 for the second oil circuit 200, the fourth oil circuit 500 and the opening regulating valve 138, thereby reducing the number of outlets of the oil cooler 122 and simplifying the structure of the oil cooler 122. For the second oil circuit 200, the fourth oil circuit 500 and the opening regulating valve 138, it is sufficient to set one outlet of the oil cooler 122, and the common oil circuit 700 can transport the lubricating oil flowing out of the oil cooler 122 to the second oil circuit 200, the fourth oil circuit 500 and the opening regulating valve 138. When the opening regulating valve 138 is opened, the fifth oil circuit 600 can be connected to the outlet of the oil cooler 122 through the common oil circuit 700, and the lubricating oil can flow into the fifth oil circuit 600 through the opening regulating valve 138.

[0158] In one embodiment, in order to actively lubricate the main shaft bearings, the fourth oil passage 500 is further adapted to guide the lubricating oil to the first main shaft bearing and / or the second main shaft bearing.

[0159] Specifically, in one embodiment, the fourth oil passage 500 may guide the lubricating oil to the first spindle bearing and the second spindle bearing. In one embodiment, the fourth oil passage 500 may guide the lubricating oil to the first spindle bearing or the second spindle bearing.

[0160] Please combine Figure 5 The fourth oil circuit 500 may have a first branch 502 and a second branch 504 to divert the lubricating oil. The first branch 502 can divert the lubricating oil to the oil injection pipe 136, and the second branch 504 can divert the lubricating oil to the first main shaft bearing and / or the second main shaft bearing. Specifically, the second branch 504 is provided with a first oil injection port 506, and the lubricating oil can be sprayed from the first oil injection port 506 to the first main shaft bearing and / or the second main shaft bearing. Optionally, the first main shaft bearing and the second main shaft bearing can be installed on the same third bearing seat 139, and the lubricating oil sprayed from the first oil injection port 506 can enter the third bearing chamber of the third bearing seat 139 to actively lubricate the first main shaft bearing and the second main shaft bearing. Figure 5 In the illustrated embodiment, a schematic diagram of the fourth oil circuit 500 is shown in area C.

[0161] In one embodiment, in order to actively lubricate the motor bearings, the fourth oil passage 500 is further adapted to guide the lubricating oil to the motor bearings.

[0162] Specifically, please combine Figure 5The fourth oil circuit 500 may have a first branch 502 and a second branch 504 to divert the lubricating oil. The first branch 502 may divert the lubricating oil to the oil injection pipe 136, and the second branch 504 may divert the lubricating oil to the motor bearing. The second branch 504 is provided with a second oil injection port 508, and the lubricating oil may be sprayed from the second oil injection port 508 to the motor bearing to lubricate the motor bearing.

[0163] exist Figure 5 In the embodiment, the second branch 504 is provided with a first oil injection port 506 and a second oil injection port 508 for actively lubricating the main shaft bearing and the motor bearing respectively.

[0164] In one embodiment, the transmission assembly 30 includes a differential lock and a differential arranged in the second housing 20. In order to actively lubricate the gear structure inside the differential 31, please refer to Figure 3 The reducer assembly 100 includes a sixth oil circuit 800 , and the sixth oil circuit 800 is suitable for guiding the lubricating oil in the reducer assembly 100 to the inside of the differential 31 .

[0165] Specifically, the sixth oil passage 800 may be connected to the outlet of the oil cooler 122 , and the outlet 802 of the sixth oil passage 800 faces the through hole of the outer side wall of the differential housing 35 .

[0166] Please refer to Fig.12 , Fig.12 A schematic diagram showing lubricating oil flowing through a module of a reducer assembly 100 according to an embodiment of the present invention is shown.

[0167] A vehicle according to an embodiment of the present invention includes the reducer assembly 100 according to any one of the above embodiments.

[0168] In the above-mentioned vehicle, by providing an oil pump and a first oil circuit 400, the lubricating oil in the deceleration chamber can be guided to the decoupling chamber, and the decoupling mechanism 71 in the decoupling chamber can be actively lubricated to avoid failure of the decoupling mechanism 71 due to insufficient lubrication.

[0169] Specifically, vehicles include but are not limited to pure electric vehicles, hybrid vehicles, extended-range electric vehicles, etc.

[0170] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0171] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A reducer assembly, characterized in that: include: A casing, wherein the casing is provided with a chamber and a first oil circuit, wherein the chamber includes a deceleration chamber and a decoupling chamber; An oil pump is connected to the deceleration chamber and the first oil circuit, and the oil pump is suitable for guiding the lubricating oil in the deceleration chamber to the decoupling chamber through the first oil circuit.

2. The reducer assembly according to claim 1, characterized in that: The reducer assembly comprises: A transmission assembly, the transmission assembly is located in the deceleration chamber, and the transmission assembly has a first output end; A first half shaft, the first half shaft having a first end and a second end, the deceleration chamber and the decoupling chamber are connected to each other, the first end is in the deceleration chamber, the second end is in the decoupling chamber, the first end is connected to the first output end, and the second end is suitable for being connected to an output shaft; A decoupling mechanism is disposed in the decoupling cavity and connected between the second end and the output shaft, and is suitable for achieving coupling and separation between the first half-shaft and the output shaft.

3. The reducer assembly according to claim 2, characterized in that: The chamber includes a first shaft hole, the deceleration chamber and the decoupling chamber are connected through the first shaft hole, the first half shaft passes through the first shaft hole, and the outlet of the first oil circuit is connected to the first shaft hole.

4. The reducer assembly according to claim 3, characterized in that: The reducer assembly includes a first differential bearing, the transmission assembly includes a differential, the differential includes a differential housing, the first differential bearing is arranged in the first shaft hole, and the differential housing is supported on the first differential bearing.

5. The reducer assembly according to claim 4, characterized in that: The reducer assembly includes an oil separator, which is installed in the first shaft hole, the first differential bearing is located on the side of the oil separator facing the reduction chamber, and the outlet of the first oil circuit is located on the side of the oil separator facing the decoupling mechanism.

6. The reducer assembly according to claim 2, characterized in that: The speed reducer assembly includes a first differential bearing, the transmission assembly includes a differential, the differential includes a differential housing, and the differential housing is supported on the first differential bearing; The housing has a first shaft hole, the speed reduction chamber and the decoupling chamber are connected through the first shaft hole, the first half shaft passes through the first shaft hole, and a first bearing seat is formed at one end of the first shaft hole adjacent to the speed reduction chamber, and the first differential bearing is supported on the first bearing seat; The housing is provided with a second oil circuit, and the second oil circuit is suitable for guiding the lubricating oil in the deceleration chamber to the first bearing seat to lubricate the first differential bearing.

7. The reducer assembly according to claim 6, characterized in that: The reducer assembly includes an oil separator; the oil separator is installed in the first shaft hole.

8. The reducer assembly according to claim 5 or 7, characterized in that: The oil separator is provided with a communication channel, and the deceleration chamber and the decoupling chamber are communicated with each other through the communication channel.

9. The reducer assembly according to claim 6, characterized in that: The second oil circuit includes a first oil collecting groove arranged in the reduction chamber and an oil guiding structure arranged in the housing, the oil guiding structure having an oil guiding channel, the bottom wall of the first oil collecting groove is provided with a first through hole, the first oil collecting groove is suitable for collecting the lubricating oil dropped in the reduction chamber, the inlet of the oil guiding channel is connected to the first through hole, and the outlet of the oil guiding channel is suitable for guiding the lubricating oil in the oil guiding channel to the first bearing seat to lubricate the first differential bearing.

10. The reducer assembly according to claim 9, characterized in that: The second oil circuit includes a first flow channel disposed in the housing, the first flow channel communicating with the outlet of the oil pump and the deceleration chamber, and the first flow channel being suitable for spraying the lubricating oil output by the oil pump into the first oil collecting tank.

11. The reducer assembly according to claim 2, characterized in that: The speed reducer assembly includes a second differential bearing, the transmission assembly includes a differential, the differential includes a differential housing, and the differential housing is supported on the second differential bearing; A second bearing seat is formed in the housing, and the second differential bearing is arranged in the second bearing seat; The housing is provided with a third oil circuit, and the third oil circuit is suitable for guiding the lubricating oil in the deceleration chamber to the second bearing seat to lubricate the second differential bearing.

12. The reducer assembly according to claim 11, characterized in that: The third oil circuit includes a second flow channel disposed in the housing, the second flow channel communicating with the outlet of the oil pump and the second bearing seat, and the second flow channel being suitable for spraying the lubricating oil output by the oil pump to the second bearing seat.

13. The reducer assembly according to claim 11, characterized in that: The third oil circuit includes a second oil collecting groove arranged in the deceleration chamber, and the bottom wall of the second oil collecting groove is provided with a second through hole. The second oil collecting groove is suitable for collecting the lubricating oil dropped in the deceleration chamber and guiding the lubricating oil to the second bearing seat through the second through hole.

14. The reducer assembly according to claim 2, characterized in that: The housing comprises a first housing, a second housing and a decoupling housing. The first housing and the second housing enclose the deceleration chamber. The decoupling housing is arranged on a side of the first housing away from the second housing. The decoupling chamber is arranged in the decoupling housing.

15. The reducer assembly according to claim 1, characterized in that: The reducer assembly includes a drive motor, and the housing is provided with a fourth oil circuit and a fifth oil circuit, the fourth oil circuit is suitable for guiding the lubricating oil output by the oil pump to the stator of the drive motor, and the fifth oil circuit is suitable for guiding the lubricating oil output by the oil pump to the rotor of the drive motor.

16. The reducer assembly according to claim 15, characterized in that: The reducer assembly includes an opening regulating valve, the inlet of the oil pump is connected to the chamber, the fifth oil circuit is connected to the outlet of the oil pump through the opening regulating valve, and the opening regulating valve is configured to adjust the opening of the fifth oil circuit and thereby adjust the flow rate of lubricating oil flowing to the fifth oil circuit.

17. A vehicle, characterized in that: A reducer assembly comprising any one of claims 1-16.

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