Speed reducer, power assembly and vehicle

Abstract

The utility model provides a speed reducer, a power assembly and a vehicle, the speed reducer comprises a speed reduction structure, a differential structure, a first mounting piece and a second mounting piece, the first mounting piece is provided with a defined first axis, a first cavity is formed in the first mounting piece, and at least part of the speed reduction structure is arranged in the first cavity; the second installation part is configured to install the differential structure, the second installation part is connected to one side of the first installation part in the direction where the first axis is located, and one end of the speed reduction structure penetrates out of the first cavity and is connected to the second installation part; wherein an oil guide structure is arranged on the second mounting part, the oil guide structure is configured to receive and convey lubricating oil, a first flow channel and a second flow channel are formed in the second mounting part, one end of the first flow channel is communicated with the oil guide structure, the other end of the first flow channel is arranged towards the speed reduction structure, one end of the second flow channel is communicated with the oil guide structure, and the other end of the second flow channel is arranged towards the differential structure.

Description

Technical Field

[0001] The present application relates to the technical field of reducers, and in particular to a reducer, a powertrain and a vehicle. Background Art

[0002] The reducer is generally composed of a reduction structure and a differential structure. Both the reduction structure and the differential structure need to be provided with corresponding lubricating oil channels for lubrication. For most reducers, one of the reduction structure and the differential structure uses forced lubrication to pump the lubricating oil to the part that needs lubrication, while the other uses splash lubrication. The structure using splash lubrication has a poor lubrication effect, which affects the service life of the reducer. Utility Model Content

[0003] The present application provides a reducer, a power assembly and a vehicle to solve the problem of poor lubrication effect of the reducer in the prior art.

[0004] In a first aspect, the present application provides a reducer, comprising a reduction structure, a differential structure, a first mounting member, and a second mounting member, the first mounting member having a defined first axis, a first cavity being defined in the first mounting member, and the reduction structure being at least partially disposed in the first cavity; the second mounting member is configured to mount the differential structure, and along the direction of the first axis, the second mounting member is connected to one side of the first mounting member, and one end of the reduction structure passes through the first cavity and is connected to the second mounting member; wherein, an oil guiding structure is provided on the second mounting member, and the oil guiding structure is configured to receive and transport lubricating oil, and a first flow channel and a second flow channel are provided on the second mounting member, one end of the first flow channel is connected to the oil guiding structure, and the other end thereof is disposed toward the reduction structure, and one end of the second flow channel is connected to the oil guiding structure, and the other end thereof is disposed toward the differential structure.

[0005] In a possible embodiment, the reduction structure includes a planetary gear and a reduction shaft, the planetary gear is rotatably connected to the reduction shaft, one end of the reduction shaft is connected to the first mounting member, a first mounting groove is provided on a side of the second mounting member close to the first mounting member, the other end of the reduction shaft is accommodated in the first mounting groove, and an end of the first flow channel away from the oil guide structure is connected to the first mounting groove.

[0006] In a possible implementation, along the direction of the first axis, the second mounting member is spaced apart from the first mounting member, a second cavity is formed between the second mounting member and the first mounting member, the differential structure is disposed in the second cavity, and the second flow channel is connected to the second cavity at one end away from the oil guide structure.

[0007] In a possible implementation manner, the differential structure includes a differential shaft and a differential gear set, and the differential shaft is configured to mount the differential gear set;

[0008] A first clamping groove is provided on a side of the first mounting member close to the second mounting member, and a second clamping groove is provided on a side of the second mounting member close to the first mounting member; the first clamping groove is connected to the second clamping groove and the first clamping groove and the second clamping groove together form a clamping groove, the differential shaft is at least partially accommodated in the clamping groove, and an end of the second flow channel away from the oil guide structure is connected to the clamping groove.

[0009] In a possible embodiment, an extension portion is protruding from a side of the second mounting member away from the first mounting member, and the oil guide structure includes an oil guide member, which is sleeved on the outer peripheral surface of the extension portion and connected to the second mounting member. A first guide channel and a second guide channel are opened on the oil guide member, and the first guide channel is connected to the first channel, and the second guide channel is connected to the second channel.

[0010] In a possible implementation manner, a first convex portion and a second convex portion are convexly formed on a side of the oil guide member close to the second mounting member, and a second mounting groove and a third mounting groove are formed on a side of the second mounting member away from the first mounting member;

[0011] The first convex portion is received in the second mounting groove, and the first guide flow channel is provided on the first convex portion, and the second mounting groove is connected with the first guide flow channel and the first flow channel;

[0012] The second convex portion is received in the third mounting groove, and the second guide flow channel is opened on the second convex portion, and the third mounting groove is connected with the second guide flow channel and the second flow channel.

[0013] In a possible implementation, the oil guide structure further includes an oil distribution member, the oil distribution member is sleeved on the outer peripheral surface of the extension portion, and along the direction of the first axis, the oil distribution member is spaced apart and arranged on a side of the oil guide member away from the second mounting member;

[0014] The oil distribution part is provided with an oil inlet hole, the extension part is provided with a third guide flow channel, the third guide flow channel is connected with the oil inlet hole, and the first guide flow channel and the second guide flow channel are connected with the third guide flow channel.

[0015] In a possible implementation manner, the reducer further includes:

[0016] A housing having a mounting cavity therein, wherein the first mounting member and the second mounting member are disposed in the mounting cavity;

[0017] A bearing member, which is sleeved on the outer circumferential surface of the extension portion, and the extension portion is rotatably connected to the housing through the bearing member;

[0018] Wherein, an oil inlet channel and an oil separation channel are provided on the shell, the oil inlet channel is connected to the oil inlet hole, one end of the oil separation channel is connected to the oil inlet channel, and the other end thereof is arranged toward the bearing component.

[0019] In a second aspect, the present application further provides a power assembly, including a driving member and the above-mentioned reducer, wherein the driving member is transmission-connected to the reduction structure.

[0020] In a third aspect, the present application also provides a vehicle, comprising a vehicle body and the above-mentioned power assembly, wherein the power assembly is installed on the vehicle body.

[0021] In the reducer of the present application, an oil guiding structure is provided on the second mounting member, and a first flow channel and a second flow channel are opened on the second mounting member. The oil guiding structure transports the lubricating oil to the first flow channel and the second flow channel, and the first flow channel and the second flow channel then transport the lubricating oil to the reduction structure and the differential structure respectively, thereby lubricating the reduction structure and the differential structure at the same time by active lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the reducer of the present application in one embodiment.

[0023] Figure 2 This is a partial structural schematic diagram of a reducer of the present application in one embodiment.

[0024] Figure 3 for Figure 1 Schematic cross-sectional view of the reducer along the III-III direction.

[0025] Figure 4 This is a schematic structural diagram of the first mounting member of the reducer in one embodiment of the present application.

[0026] Figure 5 It is a schematic diagram of an explosion of the reducer of the present application in one embodiment.

[0027] Figure 6 It is an exploded schematic diagram of another perspective of the reducer in one embodiment of the present application.

[0028] Figure 7 It is a schematic cross-sectional view of the second mounting member of the reducer in one embodiment of the present application.

[0029] Figure 8 for Figure 3 A local enlarged schematic diagram of the reducer corresponding to area A.

[0030] Fig. 9 It is an exploded schematic diagram of the reduction structure and the differential structure of the reducer in one embodiment of the present application.

[0031] Fig.10 for Figure 3 A local enlarged schematic diagram of the reducer corresponding to area B.

[0032] Fig.11 It is an exploded schematic diagram of the second mounting member and the oil guide structure of the reducer in one embodiment of the present application.

[0033] Fig.12 It is an exploded schematic diagram of another perspective of the second mounting member and the oil guide structure in one embodiment of the reducer of the present application.

[0034] Fig.13 It is a partial exploded schematic diagram of the reducer of the present application in one embodiment.

[0035] Fig.14 for Fig.13 A schematic diagram of the structure of the housing of the reducer in one embodiment.

[0036] Fig.15 It is a schematic structural diagram of a powertrain of the present application in one embodiment.

[0037] Fig.16 It is a schematic structural diagram of a vehicle of the present application in one embodiment.

[0038] Description of main component symbols:

[0039] Vehicle 300

[0040] Powertrain 200

[0041] Reducer 100

[0042] The first axis Z

[0043] First groove wall P1

[0044] Second groove wall P2

[0045] Card slot 1

[0046] First holding slot 101

[0047] Second holding slot 102

[0048] Drive 2

[0049] Car body 3

[0050] Wheel 301

[0051] Speed ​​reduction structure 10

[0052] Sun gear 11

[0053] Planetary gear 12

[0054] First wheel 121

[0055] Second wheel 122

[0056] Reduction shaft 13

[0057] Limiting slot 130

[0058] First District 131

[0059] Second District 132

[0060] Third District 133

[0061] Ball bearing 14

[0062] Column bearing 15

[0063] Input shaft 16

[0064] Through hole 160

[0065] Differential structure 20

[0066] Differential shaft 21

[0067] Groove 210

[0068] Differential gear set 22

[0069] First gear 221

[0070] Second gear 222

[0071] Connector 23

[0072] Output shaft 24

[0073] First mounting member 30

[0074] First mounting portion 31

[0075] Fourth installation slot 311

[0076] Second mounting portion 32

[0077] First connection portion 33

[0078] Second connection portion 34

[0079] Intermediate connecting portion 35

[0080] First connection hole 351

[0081] First perforation 36

[0082] First cavity 37

[0083] Second cavity 38

[0084] Second mounting member 40

[0085] The third mounting portion 41

[0086] Second connection hole 410

[0087] First mounting groove 42

[0088] Extension 43

[0089] The first extension portion 431

[0090] Oil guide outlet 4310

[0091] The second extension portion 432

[0092] First oil guide groove 4320

[0093] Oil inlet 4321

[0094] Seal groove 4322

[0095] Seal 4323

[0096] The third guide channel 433

[0097] Second perforation 44

[0098] First flow channel 45

[0099] Second flow channel 46

[0100] Second mounting groove 47

[0101] Third mounting groove 48

[0102] Fastener 50

[0103] Oil guide structure 60

[0104] Oil guide 61

[0105] Second oil guide groove 610

[0106] First guide channel 611

[0107] Second guide channel 612

[0108] first convex portion 613

[0109] Second convex portion 614

[0110] Oil distribution parts 62

[0111] Oil inlet hole 620

[0112] Ring gear 70

[0113] Internal teeth 71

[0114] First latch tooth 72

[0115] Housing 80

[0116] First end 801

[0117] Second end 802

[0118] Mounting cavity 81

[0119] Annular protrusion 810

[0120] The second rotating groove 811

[0121] Second latch tooth 82

[0122] First rotating groove 83

[0123] Oil inlet channel 84

[0124] Oil distribution channel 85

[0125] Oil inlet 86

[0126] Oil outlet 87

[0127] Bearing 90

[0128] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0129] The following description will refer to the accompanying drawings to more fully describe the content of the present application. Shown in the accompanying drawings are exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be construed as being limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals represent identical or similar components.

[0130] The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include the plural forms. In addition, when used herein, "including" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the existence or addition of one or more other features, regions, integers, steps, operations, components and / or groups thereof.

[0131] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. In addition, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant technology and the content of this application, and will not be interpreted as an idealized or overly formal meaning.

[0132] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.

[0133] like Figures 1 to 3 As shown, combined with Fig.16 , an embodiment of the present application provides a reducer 100, which is applied to a vehicle 300. The reducer 100 includes a reduction structure 10 and a differential structure 20. The reduction structure 10 serves as the power input end of the reducer 100, and it can reduce the speed and increase the torque of the power obtained by itself. The differential structure 20 serves as the power output end of the reducer 100, and it can receive the power increased by the reduction structure 10, and transmit the power to the wheel 301 and other structures of the vehicle 300.

[0134] In addition, when the vehicle 300 turns, the differential structure 20 can adjust the rotation speed of the two wheels 301 driven by it, so that the two wheels 301 rotate at different speeds.

[0135] The reducer 100 also includes a first mounting member 30 and a second mounting member 40. A first cavity 37 is provided in the first mounting member 30, and the reduction structure 10 is at least partially disposed in the first cavity 37. The first mounting member 30 has a defined first axis Z, and the reduction structure 10 can drive the first mounting member 30 to rotate around the first axis Z. The second mounting member 40 is configured to install the differential structure 20. Along the direction of the first axis Z, the second mounting member 40 is connected to one side of the first mounting member 30, and the second mounting member 40 is coaxially arranged with the first mounting member 30, and then the first mounting member 30 drives the second mounting member 40 to rotate synchronously around the first axis Z. One end of the reduction structure 10 passes through the first cavity 37 and is connected to the second mounting member 40.

[0136] The second mounting member 40 is provided with an oil guide structure 60, which is configured to receive and deliver lubricating oil. The second mounting member 40 is provided with a first flow channel 45 and a second flow channel 46, one end of the first flow channel 45 is connected to the oil guide structure 60, and the other end thereof is arranged toward the deceleration structure 10, so as to receive the lubricating oil delivered by the oil guide structure 60 through the first flow channel 45 and then guide the lubricating oil to the deceleration structure 10, thereby lubricating the deceleration structure 10. One end of the second flow channel 46 is connected to the oil guide structure 60, and the other end thereof is arranged toward the differential structure 20, so as to receive the lubricating oil delivered by the oil guide structure 60 through the second flow channel 46 and then guide the lubricating oil to the differential structure 20, thereby lubricating the differential structure 20.

[0137] Thus, in the reducer 100 of the present application, an oil guide structure 60 is provided on the second mounting member 40, and a first flow channel 45 and a second flow channel 46 are provided on the second mounting member 40. The oil guide structure 60 delivers the lubricating oil to the first flow channel 45 and the second flow channel 46, and the first flow channel 45 and the second flow channel 46 deliver the lubricating oil to the reduction structure 10 and the differential structure 20 respectively, thereby lubricating the reduction structure 10 and the differential structure 20 simultaneously by active lubrication.

[0138] Please combine again Figures 2 to 6 In one embodiment, the first mounting member 30 includes a first mounting portion 31 and a second mounting portion 32. Along the direction of the first axis Z, the second mounting portion 32 is integrally connected to a side of the first mounting portion 31 close to the second mounting member 40.

[0139] The first mounting portion 31 is a plate-like structure and has a first axis Z. The second mounting portion 32 is circular in shape and is coaxially disposed with the first mounting portion 31 . The outer contour of the first mounting portion 31 exceeds the outer contour of the second mounting portion 32 .

[0140] Along the direction of the first axis Z, the second mounting portion 32 is spaced apart from the first mounting portion 31, and a first cavity 37 is formed between the second mounting portion 32 and the first mounting portion 31, and the first cavity 37 at least accommodates part of the structure of the deceleration structure 10. A plurality of first connecting portions 33 are convexly provided on the surface of the first mounting portion 31 on one side close to the second mounting portion 32, and the first connecting portions 33 protrude toward the second mounting portion 32 along the direction of the first axis Z. The plurality of first connecting portions 33 are arranged at equal intervals around the first axis Z, and each first connecting portion 33 is located at the edge of the first mounting portion 31.

[0141] A plurality of second connection portions 34 are convexly provided on the surface of the second mounting portion 32 on a side away from the first mounting portion 31. The second connection portions 34 are curved and extend from one end thereof close to the second mounting portion 32 in a direction away from the first axis Z. The plurality of second connection portions 34 are arranged at equal intervals around the first axis Z, and each second connection portion 34 is located at the edge of the second mounting portion 32. In this way, when the second mounting member 40 is connected to the first mounting member 30, the plurality of second connection portions 34 cooperate with the second mounting portion 32 and the second mounting member 40 to enclose and form a second cavity 38, and the differential gear set 22 is installed in the second cavity 38.

[0142] The plurality of first connection parts 33 are disposed correspondingly to the plurality of second connection parts 34. Along the radial direction of the second mounting part 32, the first connection parts 33 are disposed at intervals on the outer sides of the corresponding second connection parts 34.

[0143] The first mounting member 30 further includes a plurality of intermediate connecting portions 35, which are arranged corresponding to the plurality of first connecting portions 33 and the plurality of second connecting portions 34. The intermediate connecting portions 35 extend along the radial direction of the second mounting portion 32 and are located between the corresponding first connecting portions 33 and the second connecting portions 34. One end of the intermediate connecting portion 35 is integrally connected to the first connecting portion 33, and the other end of the intermediate connecting portion 35 is integrally connected to the second connecting portion 34.

[0144] Please combine again Figures 2 to 6 In one embodiment, the reduction structure 10 includes a planetary gear 12 and a reduction shaft 13. The planetary gear 12 is rotatably mounted on the outer circumference of the reduction shaft 13, and the planetary gear 12 is coaxially arranged with the reduction shaft 13. One end of the reduction shaft 13 is connected to the first mounting member 30, and a first mounting groove 42 is provided on the side of the second mounting member 40 close to the first mounting member 30, and the other end of the reduction shaft 13 away from the first mounting member 30 is accommodated in the first mounting groove 42. The end of the first flow channel 45 away from the oil guide structure 60 is connected to the first mounting groove 42, so as to guide the lubricating oil into the first mounting groove 42 through the first flow channel 45, and then the lubricating oil flows along the reduction shaft 13 after entering the first mounting groove 42, and then lubricates the planetary gear 12 mounted on the reduction shaft 13, and the bearing used between the planetary gear 12 and the reduction shaft 13.

[0145] In this embodiment, the number of the planetary gears 12 and the reduction shaft 13 are both three. It is understandable that in other embodiments, the number of the planetary gears 12 and the reduction shaft 13 may also be four or other numbers. Each reduction shaft 13 is rotatably provided with a planetary gear 12, and the planetary gear 12 can rotate around the axis of the reduction shaft 13 on which it is located.

[0146] There are three first mounting grooves 42 , and the three first mounting grooves 42 are arranged at equal intervals around the first axis Z. Along the direction of the first axis Z, the first mounting groove 42 penetrates the second mounting member 40 from the surface of the second mounting member 40 on the side close to the first mounting portion 31 . The other end of the reduction shaft 13 away from the first mounting member 30 is received in the first mounting groove 42 , and the outer peripheral surface of the reduction shaft 13 abuts against the inner wall of the first mounting groove 42 .

[0147] The first mounting portion 31 is provided with a fourth mounting groove 311, and the number of the fourth mounting grooves 311 is three. The three fourth mounting grooves 311 are arranged at equal intervals around the first axis Z. Along the direction of the first axis Z, the fourth mounting groove 311 extends from the surface of the first mounting portion 31 away from the second mounting portion 32 to penetrate the first mounting portion 31. One end of the reduction shaft 13 away from the second mounting member 40 is received in the fourth mounting groove 311, and the outer peripheral surface of the reduction shaft 13 abuts against the inner wall of the fourth mounting groove 311.

[0148] In particular, the three fourth mounting grooves 311 and the three first connecting parts 33 are staggered so that the reduction shaft 13 can pass through the avoidance space formed between two adjacent first connecting parts 33, ensuring that the end of the reduction shaft 13 away from the first mounting member 30 can be smoothly installed on the second mounting member 40.

[0149] In this embodiment, the reduction gear mechanism 10 further includes an input shaft 16 and a sun gear 11 .

[0150] The sun gear 11 is located in the first cavity 37 , and the axis of the sun gear 11 coincides with the first axis Z. The input shaft 16 is coaxially disposed with the sun gear 11 .

[0151] The first mounting member 30 is provided with a first through hole 36, and the axis of the first through hole 36 coincides with the first axis Z. The first through hole 36 extends from a side surface of the second mounting portion 32 away from the first mounting portion 31 to penetrate the first mounting portion 31 and the second mounting portion 32. The input shaft 16 is passed through the first through hole 36, and the outer diameter of the input shaft 16 is smaller than the hole diameter of the first through hole 36, so that the input shaft 16 is spaced apart from the hole wall of the first through hole 36. One end of the input shaft 16 is coaxially fixed to the sun gear 11, and the other end of the input shaft 16 passes through the first through hole 36 and is transmission-connected to a driving member 2 (see Fig.15 ) to drive the input shaft 16 to rotate around the first axis Z through the driving member 2, thereby driving the sun gear 11 to rotate around the first axis Z.

[0152] In particular, the input shaft 16 is integrally connected to the sun gear 11. It is understandable that in other embodiments, the input shaft 16 and the sun gear 11 may also be designed as a detachable structure.

[0153] The axis direction of the planetary gear 12 is parallel to the direction of the first axis Z. A plurality of planetary gears 12 are arranged at intervals around the outer circumference of the sun gear 11 , and the plurality of planetary gears 12 are meshed with the sun gear 11 , so that the sun gear 11 drives each planetary gear 12 to rotate around its own axis.

[0154] Please combine again Figures 3 to 8 In one embodiment, along the direction of the first axis Z, the planetary gear 12 includes a first wheel portion 121 and a second wheel portion 122 connected in sequence, and the second wheel portion 122 is located on a side of the first wheel portion 121 close to the second mounting member 40. The first wheel portion 121 and the second wheel portion 122 are coaxially arranged and integrally connected.

[0155] The first wheel portion 121 and the second wheel portion 122 are both rotatably mounted on the reduction shaft 13. The three first wheel portions 121 are arranged at equal intervals around the sun gear 11, and the three first wheel portions 121 are all meshed with the sun gear 11, so that the three first wheel portions 121 are simultaneously driven by the sun gear 11 to rotate around the axis of the corresponding reduction shaft 13, and then the three first wheel portions 121 drive the three second wheel portions 122 to rotate around the axis of the corresponding reduction shaft 13.

[0156] In this embodiment, the reduction mechanism 10 further includes a ball bearing 14 and a cylindrical bearing 15. The first wheel 121 is rotatably mounted on the outer circumference of the reduction shaft 13 through the ball bearing 14, and the second wheel 122 is rotatably mounted on the outer circumference of the reduction shaft 13 through the cylindrical bearing 15.

[0157] Along the extension direction of the reduction shaft 13, the reduction shaft 13 includes a first section 131, a second section 132, and a third section 133 connected in sequence. The first section 131, the second section 132, and the third section 133 are coaxially arranged and integrally connected. One end of the first section 131 away from the second section 132 is received in the fourth mounting groove 311, and one end of the third section 133 away from the second section 132 is received in the first mounting groove 42.

[0158] The outer diameter of the first section 131 is greater than the outer diameter of the second section 132, and the outer diameter of the second section 132 is greater than the outer diameter of the third section 133. The ball bearing 14 is mounted on the outer circumference of the first section 131, and the column bearing 15 is mounted on the outer circumference of the third section 133, so that the lubricant enters the first mounting groove 42 and flows along the reduction shaft 13 to the column bearing 15, thereby lubricating the column bearing 15.

[0159] In this way, the ball bearing 14 and the column bearing 15 are simultaneously arranged on the reduction shaft 13, so that the ball bearing 14 bears more axial force of the planetary gear, thereby making the helix angle of the gear teeth of the second wheel portion 122 larger, thereby optimizing the design of the end face overlap of the planetary gear 12 and improving the NVH (Noise, Vibration, Harshness) level of the reduction structure 10. In addition, the column bearing 15 can be actively lubricated through the design of the first flow channel 45.

[0160] Please combine again Figures 5 to 9 , and see Figure 3 In one embodiment, the differential structure 20 includes a differential shaft 21 and a differential gear set 22. The differential shaft 21 is used to mount the differential gear set 22. The differential shaft 21 is clamped between the first mounting member 30 and the second mounting member 40.

[0161] In this way, when the first mounting member 30 is connected to the second mounting member 40, the first mounting member 30 and the second mounting member 40 clamp the differential shaft 21 of the differential structure 20, avoiding the use of other elements such as pins to fix the differential shaft 21 to the second mounting member 40, simplifying the assembly process of the differential shaft 21, and further improving the production efficiency of the reducer 100. In addition, the differential shaft 21 is fixed by the first mounting member 30 and the second mounting member 40, so that the second flow channel 46 opened on the second mounting member 40 guides the lubricating oil to the differential shaft 21, thereby realizing active lubrication of the differential structure 20.

[0162] In this embodiment, the number of the differential shafts 21 is three. It is understandable that in other embodiments, the number of the differential shafts 21 may also be two or other numbers.

[0163] A first clamping groove 101 is provided on one side of the first mounting member 30 close to the second mounting member 40, and a second clamping groove 102 is provided on one side of the second mounting member 40 close to the first mounting member 30. When the first mounting member 30 is connected to the second mounting member 40, the first clamping groove 101 is connected to the second clamping groove 102, and the first clamping groove 101 and the second clamping groove 102 together form a clamping groove 1. The differential shaft 21 is at least partially accommodated in the clamping groove 1, and the portion of the differential shaft 21 accommodated in the clamping groove 1 is clamped between the first groove wall P1 of the first clamping groove 101 and the second groove wall P2 of the second clamping groove 102, thereby achieving that the differential shaft 21 is clamped between the first mounting member 30 and the second mounting member 40. One end of the second flow channel 46 away from the oil guide structure 60 is connected to the clamping groove 1, so that the lubricating oil is guided into the clamping groove 1 through the second flow channel 46, and the lubricating oil flows along the outer surface of the differential shaft 21 located in the clamping groove 1, thereby lubricating the differential gear set 22 installed on the differential shaft 21. In this embodiment, the first clamping groove 101 is opened on the surface of the side of the middle connecting part 35 close to the second mounting member 40. The number of the first clamping grooves 101 is the same as the number of the differential shafts 21, and each middle connecting part 35 is provided with a first clamping groove 101. The extension direction of the first clamping groove 101 is parallel to the radial direction of the second mounting part 32, and the shape of the first clamping groove 101 is semi-cylindrical.

[0164] The shape of the second mounting member 40 is substantially the same as that of the first mounting portion 31. A third mounting portion 41 is protrudingly provided on the surface of the second mounting member 40 on the side close to the first mounting member 30, and the third mounting portion 41 protrudes toward the first mounting member 30 along the direction of the first axis Z. The second clamping grooves 102 are provided on the surface of the third mounting portion 41 on the side close to the first mounting member 30, and the number of the second clamping grooves 102 is the same as the number of the first clamping grooves 101. The extension direction of the second clamping grooves 102 is parallel to the radial direction of the second mounting portion 32, and the shape and size of the second clamping grooves 102 are the same as those of the first clamping grooves 101. The number of the third mounting portions 41 is the same as the number of the intermediate connecting portions 35, and a second clamping groove 102 is provided on each third mounting portion 41.

[0165] In particular, the first clamping groove 101 and the second clamping groove 102 are connected to the second cavity 38 at one end close to the first axis Z, so that one end of the differential shaft 21 can pass through the clamping groove 1 and then extend into the second cavity 38. In this embodiment, the reducer 100 also includes a fastener 50. The first mounting member 30 is provided with a first connecting hole 351, and the second mounting member 40 is provided with a second connecting hole 410. The fastener 50 is an element such as a bolt, and the first connecting hole 351 and the second connecting hole 410 are both threaded holes. The fastener 50 is threadedly matched with the first connecting hole 351 and the second connecting hole 410, so as to fix the second mounting member 40 to the first mounting member 30, and make the second mounting member 40 press against the first mounting member 30, so as to ensure that the first mounting member 30 and the second mounting member 40 can clamp the differential shaft 21.

[0166] The first connection hole 351 is formed on a surface of the second mounting portion 32 close to the second mounting member 40, and the extension direction of the first connection hole 351 is parallel to the direction of the first axis Z. The second connection hole 410 is formed on a surface of the third mounting portion 41 close to the first mounting member 30, and the extension direction of the second connection hole 410 is parallel to the direction of the first axis Z.

[0167] In this embodiment, the number of the fasteners 50 is twice the number of the differential shafts 21 . Accordingly, the number of the first connecting holes 351 and the second connecting holes 410 are both twice the number of the differential shafts 21 .

[0168] Two first connection holes 351 are formed on each intermediate connection portion 35. The two first connection holes 351 are symmetrically distributed on both sides of the first clamping slot 101 with the axis of the first clamping slot 101 as a reference, and the two first connection holes 351 are spaced apart from the first clamping slot 101.

[0169] Each third mounting portion 41 is provided with two second connection holes 410. The two second connection holes 410 are symmetrically distributed on both sides of the second clamping slot 102 with the axis of the second clamping slot 102 as a reference, and the two second connection holes 410 are spaced apart from the second clamping slot 102.

[0170] In this way, a fastener 50 is provided on both sides of each differential shaft 21 to simultaneously fix the intermediate connection portion 35 and the third mounting portion 41 corresponding to the differential shaft 21, so that the third mounting portion 41 and the intermediate connection portion 35 can be pressed against each other, thereby ensuring the stability of the installation of the differential shaft 21 and preventing the differential shaft 21 from shaking. In addition, the two fasteners 50 are symmetrically distributed on both sides of the differential shaft 21, which can prevent the intermediate connection portion 35 and the third mounting portion 41 from being subjected to uneven force on both sides of the differential shaft 21, and prevent the intermediate connection portion 35 and the third mounting portion 41 from warping or cracking.

[0171] It is understandable that in other embodiments, the two first connection holes 351 formed on each intermediate connection portion 35 may also be asymmetrically arranged. The two second connection holes 410 formed on each third mounting portion 41 may also be asymmetrically arranged.

[0172] In this embodiment, the differential structure 20 further includes a connecting member 23, and the direction of the axis of the connecting member 23 is parallel to the direction of the first axis Z. The three differential shafts 21 are arranged at equal intervals around the outer circumference of the connecting member 23, and one end of the three differential shafts 21 extending into the second cavity 38 is integrally connected to the outer circumference of the connecting member 23, and the other end of each differential shaft 21 is clamped by the first mounting member 30 and the second mounting member 40. The installation process of the differential shaft 21 can be simplified, and each differential shaft 21 can be directly clamped between the first mounting member 30 and the second mounting member 40.

[0173] In addition, by integrally forming the three differential shafts 21 and the connecting member 23 , the supporting rigidity of the differential shaft 21 for the differential gear set 22 can be increased.

[0174] Further, the differential gear set 22 includes a first gear 221 and a second gear 222. The first gear 221 is a bevel gear, and each differential shaft 21 is rotatably provided with a first gear 221. The first gear 221 is located at one end of the differential shaft 21 extending into the second cavity 38, and along the extension direction of the differential shaft 21, the first gear 221 is spaced apart from the connecting member 23.

[0175] In particular, two grooves 210 are provided on the outer peripheral surface of a portion of the differential shaft 21 located in the clamping groove 1. Along the radial direction of the differential shaft 21, the two grooves 210 are provided on opposite sides of the differential shaft 21, so that a gap is formed between the differential shaft 21 and the groove wall of the clamping groove 1 to allow the lubricating oil to flow to the first gear 221 better and lubricate the first gear 221.

[0176] In this embodiment, the number of the first gears 221 is the same as the number of the differential shafts 21, which is three. Compared with the differential structure 20 using two first gears 221, this embodiment improves the load-bearing capacity of the differential structure 20 by increasing the number of the first gears 221.

[0177] The second gear 222 is a bevel gear, and there are two of them. Along the direction of the first axis Z, the two second gears 222 are arranged at intervals on opposite sides of the connecting member 23, and the two second gears 222 are meshed with the first gear 221 on each differential shaft 21 of at least two differential shafts 21. Among them, one second gear 222 is meshed with the section of each first gear 221 on the side close to the second mounting portion 32 at the same time, and the other second gear 222 is meshed with the section of each first gear 221 on the side away from the second mounting portion 32 at the same time.

[0178] The differential structure 20 further includes two output shafts 24, and the axes of the two output shafts 24 coincide with the first axis Z. The two output shafts 24 are coaxially fixed to the two second gears 222, so that the two second gears 222 drive the two output shafts 24 to rotate around the first axis Z. In this embodiment, the two output shafts 24 are respectively connected to the wheels 301 (see Fig.16 ), thereby driving the two wheels 301 to rotate simultaneously.

[0179] The second mounting member 40 is provided with a second through hole 44. The axis of the second through hole 44 coincides with the first axis Z. The second through hole 44 extends from the surface of the second mounting member 40 on the side close to the first mounting member 30 to penetrate the second mounting member 40. The first through hole 36 is for one output shaft 24 to pass through, and the second through hole 44 is for the other output shaft 24 to pass through.

[0180] In particular, a through hole 160 is formed on the end surface of the input shaft 16 away from the sun gear 11. The through hole 160 passes through the input shaft 16 and the sun gear 11 along the extension direction of the input shaft 16, so that the output shaft 24 located on the side close to the first mounting member 30 can be inserted through the sun gear 11 and the input shaft 16.

[0181] Thus, during the rotation of the first mounting member 30 and the second mounting member 40, the first mounting member 30 and the second mounting member 40 drive each differential shaft 21 to rotate around the first axis Z, thereby causing each first gear 221 to rotate around the first axis Z. During the rotation of each first gear 221, each first gear 221 simultaneously drives the second gears 222 on both sides thereof to rotate, thereby driving the two output shafts 24 to rotate. In addition, when the vehicle 300 turns, the two wheels 301 simultaneously apply driving force to both sides of each first gear 221 through their respective corresponding second gears 222, thereby causing the first gear 221 to rotate around the axis of the differential shaft 21, thereby adjusting the rotation speed of the two wheels 301, causing the two wheels 301 to rotate at different speeds, thereby achieving the turning of the vehicle 300.

[0182] Please combine again Figures 10 to 12 , and see Figure 3 and Figure 7In one embodiment, the oil guide structure 60 includes an oil guide member 61. An extension portion 43 is convexly provided on the surface of the second mounting member 40 on a side away from the first mounting member 30. The extension portion 43 is cylindrical in shape, and the axis of the extension portion 43 coincides with the first axis Z. The second through hole 44 passes through the extension portion 43, so that the output shaft 24 located on the side close to the second mounting member 40 can pass through the extension portion 43.

[0183] The oil guide member 61 is sleeved on the outer circumference of the extension portion 43 and connected to the second mounting member 40. The oil guide member 61 is provided with a first guide channel 611 and a second guide channel 612. The first guide channel 611 is connected to the first channel 45, and the second guide channel 612 is connected to the second channel 46.

[0184] Specifically, the shape of the oil guide member 61 is roughly annular. A first convex portion 613 and a second convex portion 614 are convexly provided on one side of the oil guide member 61 close to the second mounting member 40. Along the direction of the first axis Z, the first convex portion 613 and the second convex portion 614 protrude from the surface of the oil guide member 61 on the side close to the second mounting member 40 toward the second mounting member 40. The number of the first convex portions 613 is the same as the number of the reduction shaft 13, that is, three. The three first convex portions 613 are arranged at equal intervals around the first axis Z. The number of the second convex portions 614 is the same as the number of the differential shaft 21, that is, three. The three second convex portions 614 are arranged at equal intervals around the first axis Z. In addition, the three first convex portions 613 and the three second convex portions 614 are staggered around the first axis Z.

[0185] A second mounting groove 47 and a third mounting groove 48 are formed on a side of the second mounting member 40 away from the first mounting member 30. Along the direction of the first axis Z, the second mounting groove 47 and the third mounting groove 48 are formed by being recessed from the surface of the second mounting member 40 on the side away from the first mounting member 30 toward the first mounting member 30, and the second mounting groove 47 and the third mounting groove 48 do not penetrate the second mounting member 40. A first convex portion 613 is clamped in each second mounting groove 47, and a second convex portion 614 is clamped in each third mounting groove 48, so that the oil guide member 61 is clamped with the second mounting member 40.

[0186] The first convex portion 613 has a first guide channel 611, and the second mounting groove 47 connects the first guide channel 611 and the first channel 45. The second convex portion 614 is received in the third mounting groove 48, and the second convex portion 614 has a second guide channel 612, and the third mounting groove 48 connects the second guide channel 612 and the second channel 46. In this way, when the oil guide member 61 is connected to the second mounting member 40, the oil guide member 61 guides the lubricating oil it receives to the first channel 45 and the second channel 46 respectively.

[0187] Furthermore, the oil guide structure 60 further includes an oil distribution member 62. The oil distribution member 62 is annular and sleeved on the outer peripheral surface of the extension portion 43. Along the direction of the first axis Z, the oil distribution member 62 is spaced apart on a side of the oil guide member 61 away from the second mounting member 40.

[0188] Along the direction of the first axis Z, the extension portion 43 includes a first extension portion 431 and a second extension portion 432 connected in sequence. The first extension portion 431 and the second extension portion 432 are both cylindrical in shape, and the first extension portion 431 and the second extension portion 432 are both coaxially arranged with the second mounting member 40. Along the direction of the first axis Z, the first extension portion 431 protrudes from the surface of the side of the second mounting member 40 away from the first mounting member 30 toward the side away from the first mounting member 30, and the second extension portion 432 protrudes from the surface of the side of the first extension portion 431 away from the second mounting member 40 toward the side away from the second mounting member 40, and the second mounting member 40, the first extension portion 431 and the second extension portion 432 are connected in an integral manner.

[0189] The outer diameter of the first extension portion 431 is greater than the outer diameter of the second extension portion 432. Along the radial direction of the first extension portion 431, three first mounting grooves 42 are arranged at intervals on the outer side of the first extension portion 431. Three second mounting grooves 47 are arranged at equal intervals around the outer circumference of the first extension portion 431, and three third mounting grooves 48 are arranged at equal intervals around the outer circumference of the first extension portion 431, and the three second mounting grooves 47 and the three third mounting grooves 48 are arranged alternately. A second mounting groove 47 is arranged between any first mounting groove 42 and the first extension portion 431. A first flow channel 45 is arranged between each first mounting groove 42 and the adjacent second mounting groove 47, and the first flow channel 45 extends approximately along the radial direction of the first extension portion 431. One end of the first flow channel 45 is connected to the first mounting groove 42, and the other end thereof is connected to the second mounting groove 47, so that the first mounting groove 42 is connected with the second mounting groove 47 through the first flow channel 45, so that the lubricating oil can flow from the oil guide part 61 into the first mounting groove 42 to lubricate the reduction shaft 13 and the column bearing 15 installed thereon.

[0190] A third mounting groove 48 is provided between any two adjacent second mounting grooves 47, and the positions of the three third mounting grooves 48 correspond to the positions of the three second clamping grooves 102. There are three second flow channels 46, and the three second flow channels 46 are provided corresponding to the three third mounting grooves 48. Along the direction of the first axis Z, the second flow channel 46 extends from the bottom wall of the third mounting groove 48 toward one side of the first mounting member 30 to communicate with the second clamping groove 102, so that the lubricating oil can flow from the oil guide member 61 into the second clamping groove 102 to lubricate the differential shaft 21 and the first gear 221 installed thereon.

[0191] In this embodiment, an oil inlet hole 620 is provided on the oil distribution member 62. Along the radial direction of the oil distribution member 62, the oil inlet hole 620 extends inward from the outer peripheral surface of the oil distribution member 62 to the inner peripheral surface of the oil distribution member 62. A third guide flow channel 433 is provided on the extension portion 43, and the third guide flow channel 433 is connected to the oil inlet hole 620, and the first guide flow channel 611 and the second guide flow channel 612 are connected to the third guide flow channel 433, so that the lubricating oil enters the third guide flow channel 433 from the oil inlet hole 620, and then the lubricating oil is guided into the first guide flow channel 611 and the second guide flow channel 612 through the third guide flow channel 433.

[0192] Specifically, the outer circumference of the second extension portion 432 is provided with a first oil guide groove 4320. Along the radial direction of the second extension portion 432, the first oil guide groove 4320 is formed by being recessed inward from the outer circumference of the second extension portion 432. When the oil distribution member 62 is installed on the outer circumference of the second extension portion 432, the oil inlet hole 620 is connected to the first oil guide groove 4320, so that the lubricating oil enters the first oil guide groove 4320 from the oil inlet hole 620. A plurality of oil guide inlets 4321 are provided on the inner wall of the first oil guide groove 4320 on one side close to the first extension portion 431. The plurality of oil guide inlets 4321 are arranged at equal intervals around the first axis Z, and the plurality of oil guide inlets 4321 are all connected to the first oil guide groove 4320, so that the lubricating oil entering the first oil guide groove 4320 from the oil inlet hole 620 enters the plurality of oil guide inlets 4321 respectively.

[0193] In particular, a sealing groove 4322 is provided on the outer circumference of the second extension portion 432. The sealing groove 4322 is formed by being recessed inward from the outer circumference of the second extension portion 432 along the radial direction of the second extension portion 432. There are two sealing grooves 4322. Along the direction of the first axis Z, the two sealing grooves 4322 are arranged at intervals on opposite sides of the first oil guide groove 4320, and a sealing member 4323 is clamped in each of the two sealing grooves 4322. The sealing member 4323 is an O-ring or the like. The inner circumference of the oil distribution member 62 is loosely matched with the outer circumference of the second extension portion 432, and the sealing member 4323 abuts against the inner circumference of the oil distribution member 62, so that the first oil guide groove 4320 is sealed, ensuring that the lubricating oil in the first oil guide groove 4320 will not overflow from between the inner circumference of the oil distribution member 62 and the outer circumference of the second extension portion 432.

[0194] The outer circumferential surface of the first extension portion 431 is provided with a plurality of oil guide outlets 4310, which are arranged at equal intervals around the first axis Z, and the number of the plurality of oil guide outlets 4310 is the same as the number of the plurality of oil guide inlets 4321. The number of the third guide flow channels 433 is the same as the number of the oil guide outlets 4310 and the oil guide inlets 4321, and one end of each third guide flow channel 433 is connected to an oil guide outlet 4310, and the other end thereof is connected to an oil guide inlet 4321.

[0195] The inner circumferential surface of the oil guide member 61 is provided with a second oil guide groove 610, and along the radial direction of the oil guide member 61, the second oil guide groove 610 is formed by being recessed outward from the inner circumferential surface of the oil guide member 61. The first guide flow channel 611 and the second guide flow channel 612 are both connected to the second oil guide groove 610. The first guide flow channel 611 extends from the inner wall of the second oil guide groove 610 on the side close to the second mounting member 40 toward the second mounting member 40 to pass through the first convex portion 613, and the second guide flow channel 612 extends from the inner wall of the second oil guide groove 610 on the side close to the second mounting member 40 toward the second mounting member 40 to pass through the second convex portion 614.

[0196] When the oil guide member 61 is installed on the outer circumferential surface of the first extension portion 431, the inner circumferential surface of the oil guide member 61 abuts against the outer circumferential surface of the first extension portion 431, and the multiple oil guide outlets 4310 are all connected to the second oil guide groove 610, so that the lubricating oil flowing out of the multiple oil guide outlets 4310 enters the second oil guide groove 610, and the lubricating oil then flows from the second oil guide groove 610 to the first guide channel 611 and the second guide channel 612 respectively.

[0197] Please combine again Figures 10 to 14 , and see Figure 3 and Figure 7 In one embodiment, the reducer 100 further includes a housing 80 and a bearing member 90 .

[0198] The housing 80 is a substantially hemispherical structure, and the axis of the housing 80 coincides with the first axis Z. Along the direction of the first axis Z, the housing 80 has a first end 801 and a second end 802 that are oppositely disposed. An installation cavity 81 is provided on the end surface of the first end 801 away from the second end 802, and a first rotation groove 83 is provided on the end surface of the second end 802 away from the first end 801. Along the direction of the first axis Z, one end of the first rotation groove 83 is connected to the installation cavity 81, and the other end thereof passes through the housing 80. The first mounting member 30 and the second mounting member 40 are both located in the installation cavity 81.

[0199] The bottom wall of the installation cavity 81 is provided with an annular protrusion 810, which is circular in shape. The annular protrusion 810 is arranged around the outer circumference of the first rotation groove 83, and the annular protrusion 810 is enclosed to form a second rotation groove 811, the size of which is larger than that of the first rotation groove 83.

[0200] The bearing member 90 is sleeved on the outer circumference of the second extension portion 432, and the bearing member 90 is located between the oil guide member 61 and the oil distribution member 62. The second extension portion 432 partially extends into the first rotation groove 83, and partially is located in the second rotation groove 811. The portion of the second extension portion 432 located in the second rotation groove 811 is rotatably mounted in the second rotation groove 811 through the bearing member 90, so that the second mounting member 40 can rotate relative to the housing 80 around the first axis Z.

[0201] Among them, the outer shell 80 is provided with an oil inlet channel 84 and an oil distribution channel 85. In addition, an oil inlet 86 is provided on the end surface of the first end 801 away from the second end 802, and an oil outlet 87 is provided on the inner wall of the first rotating groove 83. One end of the oil inlet channel 84 is connected to the oil inlet 86, and the other end thereof is connected to the oil outlet 87, so that the lubricating oil can be transported from the oil inlet 86 to the oil inlet channel 84 by pumping or the like, and then the lubricating oil is guided through the oil inlet channel 84 to flow out from the oil outlet 87. The oil inlet channel 84 can be provided in the outer shell 80, or a rib-like structure can be protruded on the outer peripheral surface of the outer shell 80, and the oil inlet channel 84 can be provided in the rib-like structure. The shape of the oil inlet channel 84 is not specifically limited in the present application.

[0202] When the second extension portion 432 extends into the first rotating groove 83, the inner wall of the first rotating groove 83 abuts against the outer peripheral surface of the oil distribution member 62, thereby connecting the oil outlet 87 to the oil inlet hole 620, so that the lubricating oil flows out from the oil outlet 87 and then flows into the first oil guide groove 4320 through the oil inlet hole 620.

[0203] Along the direction of the first axis Z, the oil separation channel 85 extends from the bottom wall of the mounting cavity 81 toward the second end 802 to connect with the oil inlet channel 84, and the oil separation channel 85 connects with the second rotation groove 811, so that part of the lubricating oil in the oil inlet channel 84 flows into the oil separation channel 85. One end of the oil separation channel 85 away from the oil inlet channel 84 is arranged toward the bearing member 90 to lubricate the bearing member 90.

[0204] Please combine again Figure 13 to Figure 14 , and see Figure 3 In one embodiment, the reducer 100 further includes a ring gear 70 .

[0205] The gear ring 70 is in the shape of a ring, and the inner circumference of the gear ring 70 is provided with internal teeth 71. The gear ring 70 is arranged around the three second wheel portions 122, and the internal teeth 71 are meshed with the three second wheel portions 122. The outer circumference of the gear ring 70 is fixed to the inner wall of the housing 80 so that the gear ring 70 does not rotate relative to the housing 80, and then when the three second wheel portions 122 rotate around their respective axes, the three second wheel portions 122 can rotate relative to the gear ring 70 around the first axis Z, thereby realizing the rotation of the first mounting member 30 and the second mounting member 40 around the first axis Z relative to the housing 80.

[0206] In this embodiment, the outer circumference of the gear ring 70 is provided with a plurality of first latch teeth 72 arranged at intervals, and the inner circumference of the housing 80 is provided with a plurality of second latch teeth 82 arranged at intervals. The plurality of first latch teeth 72 and the plurality of second latch teeth 82 are arranged alternately, so that each first latch tooth 72 is clamped between two adjacent second latch teeth 82, thereby fixing the gear ring 70 and the housing 80.

[0207] like Fig.15As shown, the embodiment of the present application further provides a power assembly 200 , including a driving member 2 and the above-mentioned reducer 100 . The driving member 2 is transmission-connected to the reduction mechanism 10 .

[0208] Specifically, the driving member 2 is transmission-connected to the input shaft 16 to drive the input shaft 16 to rotate around the first axis Z. The driving member 2 may be a device such as an electric motor or an engine that can provide mechanical energy.

[0209] like Fig.16 See Fig.15 The embodiment of the present application also provides a vehicle 300, including a body 3 and the above-mentioned powertrain 200. The vehicle 300 can be a new energy vehicle or a fuel vehicle. The powertrain 200 is installed on the body 3, and the body 3 is equipped with wheels 301, so that the powertrain 200 provides driving force to the wheels 301 to rotate the wheels 301. The powertrain 200 can synchronously drive the two front wheels or the two rear wheels of the vehicle 300 to rotate, so as to realize front-wheel drive or rear-wheel drive.

[0210] In the above, the specific embodiments of the present application are described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various changes and substitutions may be made to the specific embodiments of the present application without departing from the scope of the present application. These changes and substitutions are all within the scope defined by the present application.

Claims

1. A speed reducer, comprising a speed reduction structure (10) and a differential structure (20); characterized in that: The reducer (100) further includes: A first mounting member (30) having a defined first axis (Z), a first cavity (37) being defined in the first mounting member (30), and the deceleration structure (10) being at least partially disposed in the first cavity (37); a second mounting member (40) configured to mount the differential structure (20); the second mounting member (40) is connected to one side of the first mounting member (30) along the direction of the first axis (Z); one end of the speed reduction structure (10) passes through the first cavity (37) and is connected to the second mounting member (40); The second mounting member (40) is provided with an oil guide structure (60), and the oil guide structure (60) is configured to receive and transport lubricating oil. The second mounting member (40) is provided with a first flow channel (45) and a second flow channel (46). One end of the first flow channel (45) is connected to the oil guide structure (60), and the other end thereof is arranged toward the deceleration structure (10). One end of the second flow channel (46) is connected to the oil guide structure (60), and the other end thereof is arranged toward the differential structure (20).

2. The reducer according to claim 1, characterized in that: The deceleration structure (10) comprises a planetary gear (12) and a deceleration shaft (13), wherein the planetary gear (12) is rotatably connected to the deceleration shaft (13), one end of the deceleration shaft (13) is connected to the first mounting member (30), a first mounting groove (42) is provided on a side of the second mounting member (40) close to the first mounting member (30), the other end of the deceleration shaft (13) is received in the first mounting groove (42), and an end of the first flow channel (45) away from the oil guide structure (60) is connected to the first mounting groove (42).

3. The reducer according to claim 1, characterized in that: Along the direction of the first axis (Z), the second mounting member (40) is spaced apart from the first mounting member (30), a second cavity (38) is formed between the second mounting member (40) and the first mounting member (30), the differential structure (20) is disposed in the second cavity (38), and an end of the second flow channel (46) away from the oil guide structure (60) is connected to the second cavity (38).

4. The reducer according to claim 3, characterized in that: The differential structure (20) comprises a differential shaft (21) and a differential gear set (22), wherein the differential shaft (21) is configured to mount the differential gear set (22); A first clamping groove (101) is provided on a side of the first mounting member (30) close to the second mounting member (40), and a second clamping groove (102) is provided on a side of the second mounting member (40) close to the first mounting member (30); the first clamping groove (101) is connected to the second clamping groove (102), and the first clamping groove (101) and the second clamping groove (102) together form a clamping groove (1), the differential shaft (21) is at least partially accommodated in the clamping groove (1), and an end of the second flow channel (46) away from the oil guide structure (60) is connected to the clamping groove (1).

5. The reducer according to claim 1, characterized in that: An extension portion (43) is convexly provided on a side of the second mounting member (40) away from the first mounting member (30); the oil guide structure (60) comprises an oil guide member (61); the oil guide member (61) is sleeved on the outer peripheral surface of the extension portion (43), and the oil guide member (61) is connected to the second mounting member (40); a first guide flow channel (611) and a second guide flow channel (612) are provided on the oil guide member (61); the first guide flow channel (611) is connected to the first flow channel (45), and the second guide flow channel (612) is connected to the second flow channel (46).

6. The reducer according to claim 5, characterized in that: A first convex portion (613) and a second convex portion (614) are convexly provided on a side of the oil guide member (61) close to the second mounting member (40), and a second mounting groove (47) and a third mounting groove (48) are provided on a side of the second mounting member (40) away from the first mounting member (30); The first convex portion (613) is received in the second mounting groove (47), and the first guide flow channel (611) is provided on the first convex portion (613), and the second mounting groove (47) is connected to the first guide flow channel (611) and the first flow channel (45); The second convex portion (614) is received in the third mounting groove (48), and the second guide flow channel (612) is opened on the second convex portion (614), and the third mounting groove (48) communicates with the second guide flow channel (612) and the second flow channel (46).

7. The reducer according to claim 5, characterized in that: The oil guide structure (60) further comprises an oil distribution member (62), wherein the oil distribution member (62) is sleeved on the outer peripheral surface of the extension portion (43), and along the direction of the first axis (Z), the oil distribution member (62) is arranged at intervals on a side of the oil guide member (61) away from the second mounting member (40); The oil distribution part (62) is provided with an oil inlet hole (620), the extension part (43) is provided with a third guide channel (433), the third guide channel (433) is connected to the oil inlet hole (620), and the first guide channel (611) and the second guide channel (612) are connected to the third guide channel (433).

8. The reducer according to claim 7, characterized in that: The reducer (100) further includes: A housing (80) having a mounting cavity (81) therein, wherein the first mounting member (30) and the second mounting member (40) are disposed in the mounting cavity (81); A bearing member (90) is sleeved on the outer peripheral surface of the extension portion (43), and the extension portion (43) is rotatably connected to the housing (80) through the bearing member (90); The housing (80) is provided with an oil inlet channel (84) and an oil separation channel (85), the oil inlet channel (84) is connected to the oil inlet hole (620), one end of the oil separation channel (85) is connected to the oil inlet channel (84), and the other end thereof is arranged toward the bearing member (90).

9. A powertrain, characterized in that: It comprises a driving member (2) and a reducer (100) according to any one of claims 1 to 8, wherein the driving member (2) is drivingly connected to the reduction structure (10).

10. A vehicle, characterized in that: It comprises a vehicle body (3), and a power assembly (200) as claimed in claim 9, wherein the power assembly (200) is installed on the vehicle body (3).

Images