Speed reducer and vehicle

Abstract

The application provides a reducer and a vehicle. The reducer comprises a reduction gear, a differential and an oil collecting piece. The reduction gear is internally provided with a mounting structure and a first assembly space on a first side of the mounting structure. The differential comprises a first part in the first assembly space, and the first part is provided with an oil inlet. The oil collecting piece is assembled to the mounting structure and located in the first assembly space. The oil collecting piece is provided with an oil collecting space, and the oil collecting space is communicated with the oil inlet and an oil storage space in the reducer. The oil collecting piece can directly collect lubricating oil from the oil storage space in the reducer through the oil collecting space, and the lubricating oil enters the interior of the differential through the oil inlet. The amount of lubricating oil entering the interior of the differential is increased, and the lubricating effect of the reducer is improved.

Description

Technical Field

[0001] This application relates to the field of automotive parts, and in particular to a speed reducer and a vehicle. Background Technology

[0002] The reducer is a key component of a vehicle's transmission system, playing a crucial role in vehicle operation and steering. It contains gear sets, differentials, and other components. The differential, due to its complex internal structure and numerous contact surfaces, generates significant heat during operation. Current reducers lubricate the differential by agitating the internal lubricating oil through gears. However, the amount of oil entering the differential is often insufficient, making it prone to burning and wear failure under extreme conditions. Increasing the oil volume or adding forced lubrication mechanisms is limited by cost and manufacturing constraints.

[0003] Therefore, it is necessary to provide an improved speed reducer and vehicle to solve the above problems. Summary of the Invention

[0004] This application provides a speed reducer and vehicle with good lubrication effect.

[0005] This application provides a speed reducer, including a reduction gear, a differential, and an oil collector. The reduction gear has an installation structure and a first assembly space located on a first side of the installation structure. The differential includes a first part located in the first assembly space, and the first part has an oil inlet. The oil collector is assembled to the installation structure and located in the first assembly space. The oil collector has an oil collecting space, and the oil collecting space is connected to the oil inlet and the oil storage space in the speed reducer.

[0006] Furthermore, the oil collecting component includes an annular main body, with an oil-blocking portion formed on one side of the main body facing inward, and a connecting portion formed on the other side of the main body facing radially inward. The main body, the oil-blocking portion, and the connecting portion together form the oil collecting space.

[0007] Furthermore, the oil-blocking portion includes a first oil-blocking portion and a second oil-blocking portion, wherein the first oil-blocking portion extends in a direction away from the main body portion, and the second oil-blocking portion extends in a radial direction.

[0008] Furthermore, the connecting part is provided with several partitions, which divide the oil collecting space into multiple oil collecting chambers.

[0009] Furthermore, the connecting part is provided with a connecting hole, and the connecting hole is assembled to the mounting structure; the main body is provided with a buckle, and the reduction gear is provided with a groove that cooperates with the buckle.

[0010] Furthermore, the first part includes a ball end housing, and the oil inlet is disposed on the ball end housing; the center of the oil collecting component is provided with a differential mounting hole, the differential mounting hole includes a receiving hole and a limiting groove formed by expanding from the edge of the receiving hole, and the ball end housing is located in the differential mounting hole and can abut against the limiting groove.

[0011] Furthermore, the reducer also includes a reducer housing and an oil guide fixed on the reducer housing. The oil guide includes an oil collection groove and an oil guide passage communicating with the oil collection groove. The oil collection groove is at least partially located between the planes formed at both ends of the reduction gear, and the outlet of the oil guide passage is located in the upper region of the differential in the vertical direction.

[0012] Furthermore, the second side of the mounting structure is provided with a second assembly space, and the differential includes a second part located in the second assembly space. The second part includes a gear ring end housing, and an oil guide hole is provided on the gear ring end housing.

[0013] Furthermore, the differential is internally provided with planetary gear mounting positions and half-shaft gear shim mounting positions, and oil passages are provided at the planetary gear mounting positions and the half-shaft gear shim mounting positions.

[0014] This application also provides a vehicle including the aforementioned reducer.

[0015] This application incorporates an oil collecting element on the reduction gear, with an oil collecting space connecting the differential's oil inlet to the oil reservoir within the reduction gear. The oil collecting element directly collects lubricating oil from the reduction gear's oil reservoir through the oil collecting space and allows the lubricating oil to enter the differential through the oil inlet. This increases the amount of lubricating oil entering the differential, improving the reduction gear's lubrication effect.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0018] Figure 1 This is an exploded perspective view of a speed reducer according to an exemplary embodiment of this application;

[0019] Figure 2 yes Figure 1 A three-dimensional structural diagram of the housing of the center differential;

[0020] Figure 3 yes Figure 2A cross-sectional view of the housing of the center differential;

[0021] Figure 4 This is a partial three-dimensional structural schematic diagram of a speed reducer according to an exemplary embodiment of this application;

[0022] Figure 5 yes Figure 4 A three-dimensional structural diagram of CIMC oil fittings;

[0023] Figure 6 This is a three-dimensional structural diagram of a speed reducer according to an exemplary embodiment of this application.

[0024] Reference numerals: 10; 11; 12; 101; 102; 101; 102; 20; 21; 211; 212; 22; 221; 222; 223; 224; 23; 24; 25; 26; 27; 28; 29; 20; 20; 222; 223; 224; 23; 24; 25; 26; 27; 28; 29; 20; 20; 20; 21; 22; 22; 22; 22; 22; 22; 22; 22; 22; 22; 23; 24 ... Oil passage, 200; oil collecting component, 30; main body, 31; buckle, 311; oil baffle, 32; first oil baffle, 321; second oil baffle, 322; connecting part; 33; connecting hole, 331; partition, 332; differential mounting hole, 34; receiving hole, 341; limiting groove, 342; oil collecting space, 300; oil collecting chamber, 301; oil guide component, 40; oil collecting groove, 41; oil guiding passage, 42; mounting plate, 43. Detailed Implementation

[0025] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this specification. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this specification as detailed in the appended claims.

[0026] The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of this specification. The singular forms “a,” “the,” and “the” as used in this specification and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0027] It should be understood that although the terms first, second, third, etc., may be used in this specification to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this specification, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0028] The embodiments described in this specification will now be described in detail.

[0029] like Figure 1 As shown, the reducer of this application includes a reduction gear 10, a differential 20, and an oil collector 30. The reduction gear 10 has a mounting structure 11 and a first assembly space 101 located on a first side of the mounting structure 11. The differential 20 includes a first portion 21 located within the first assembly space 101. The first portion 21 has an oil inlet 212. The oil collector 30 is assembled to the mounting structure 11 and located within the first assembly space 101. The oil collector 30 has an oil collection space 300. The oil collection space 300 connects to the oil inlet 212 and the oil storage space within the reducer.

[0030] The bottom of the oil collecting component 30 is immersed in lubricating oil, allowing it to directly collect lubricating oil from the oil reservoir into the oil collecting space 300, and then allow the lubricating oil to enter the differential 20 through the oil inlet 212. Compared to traditional churning lubrication, this method of directly collecting lubricating oil from the oil reservoir improves the utilization rate of lubricating oil. The oil collecting component 30 can collect more oil, increasing the amount of lubricating oil entering the differential 20 while keeping the overall amount of lubricating oil inside the reducer constant, thus improving the lubrication effect of the reducer. This avoids the problems of high cost and low working efficiency caused by increasing the amount of oil.

[0031] Please refer to the following: Figure 2 As shown, the reduction gear 10 has a mounting structure 11 inside. The mounting structure 11 is an annular plate structure with holes, and the differential 20 is fixed to the mounting structure 11 by bolts. The mounting structure 11 can also be other structural forms, and can be connected to the differential 20 by snap-fit ​​or other means.

[0032] A second assembly space 102 is provided on the second side of the mounting structure 11. The differential 20 also includes a second part 22. The first part 21 is installed in the first assembly space 101. The second part 22 is installed in the second assembly space 102. The first part 21 passes through the mounting structure 11, and the second part 22 abuts against the mounting structure 11 from the second side.

[0033] Since the axial length of the second part 22 is less than that of the first part 21, arranging the first part 21 and the second part 22 on both sides of the mounting structure 11 can improve the assembly efficiency of the differential 20. On the one hand, the second part 22 abuts against the mounting structure 11, which can axially limit the differential 20. On the other hand, the bolts installed from the side of the second part 22 are less disturbed, making it easier to fix the differential 20.

[0034] The first part 21 includes a ball end housing 211. An oil inlet 212 is provided on the ball end housing 211. Both the oil inlet 212 and the oil collector 30 are installed within the first assembly space 101. By arranging the first part 21 and the oil collector 30 on the same side of the mounting structure 11, the distance that the lubricating oil collected by the oil collector 30 needs to travel to enter the oil inlet 212 is shortened. The lubricating oil can drip directly into the oil inlet 212, reducing oil loss during transmission and ensuring the amount of lubricating oil entering the differential 20 under various operating conditions, thus improving lubrication efficiency.

[0035] When the reducer is working, the reduction gear 10 rotates, and the oil collecting component 30 rotates along with it. As the oil collecting component 30 rotates, the oil collected at the bottom of the oil collecting component 30 moves to the top of the differential 20 and drips onto the differential 20 under the action of gravity. Part of the oil collecting space 300 can rotate to be vertically above the oil inlet 212, and the lubricating oil in this part of the oil collecting space 300 can drip directly into the interior of the differential 20 to lubricate it. This increases the amount of lubricating oil entering the interior of the differential 20 and improves the lubrication effect.

[0036] Part 22 includes a gear ring end housing 221 and a connecting housing 222. The connecting housing 222 is disc-shaped, with an outer diameter larger than the inner diameter of the mounting structure 11. The connecting housing 222 and the mounting structure 11 are connected by bolts. An oil guide hole 223 is provided on the gear ring end housing 221. By adding the oil guide hole 223, lubricating oil can simultaneously enter the differential 20 through both the oil inlet 212 and the oil guide hole 223, increasing the amount of oil entering the differential 20. The oil guide hole 223 is located on a countersunk surface 224. The countersunk surface 224 is a flat area on the arc surface of the gear ring end housing 221, which facilitates the machining of the oil guide hole 223.

[0037] like Figure 3 As shown, the differential 20 has a planetary gear mounting position 23 and a half-shaft gear washer mounting position 24 inside. Oil passages 200 are provided at the planetary gear mounting position 23 and the half-shaft gear washer mounting position 24. The oil passages 200 are notched. When the differential 20 rotates, due to the splashing of lubricating oil, the lubricating oil will collect in the oil passages 200 and flow into the interior of the differential 20.

[0038] like Figure 4 and Figure 5As shown, the oil collecting component 30 includes an annular main body 31. An oil-blocking portion 32 is formed inwardly on one side of the main body 31. A connecting portion 33 is formed radially inwardly on the other side of the main body 31. A differential mounting hole 34 is provided at the center of the oil collecting component 30. Compared to traditional forced lubrication structures, the oil collecting component 30 has a simple structure and is easy to manufacture. During assembly, the oil collecting component 30 is installed into the first assembly space 101 from the first side of the mounting structure 11, so that the connecting portion 33 abuts against the mounting structure 11, and the connecting portion 33 is assembled to the mounting structure 11. Assembly is simple and efficient.

[0039] The main body 31, the oil baffle 32, and the connecting part 33 together form an oil collecting space 300. Since the bottom of the oil collecting component 30 is immersed in lubricating oil, the oil in the oil reservoir is always able to enter the oil collecting space 300. The rotation of the oil collecting component 30 transports the oil in the oil collecting space 300 to the differential 20, where it is lubricated by the oil inside the differential 20 before returning to the oil reservoir. This cycle repeats continuously, keeping the inside of the differential 20 constantly lubricated, reducing the probability of wear or burning failures inside the differential 20.

[0040] The oil collecting component 30 has a U-shaped cross-section, which can scoop the lubricating oil in the oil storage space into the oil collecting space 300. The oil baffle 32 can block the lubricating oil entering the oil collecting space 300 from the axial direction, preventing the lubricating oil from flowing out, increasing the amount of lubricating oil collected by the oil collecting component 30, thereby increasing the amount of lubricating oil entering the differential 20.

[0041] The oil-blocking portion 32 includes a first oil-blocking portion 321 and a second oil-blocking portion 322. The first oil-blocking portion 321 extends in a direction away from the main body portion 31, while the second oil-blocking portion 322 extends radially. The first oil-blocking portion 321 extends in a direction away from the main body portion 31, increasing the volume of the oil collecting space 300 and further improving the amount of oil collected by the oil collecting member 30. At the same time, it avoids the problem of excessive stress caused by the direct radial extension of the oil-blocking portion 32.

[0042] The connecting part 33 is provided with a connecting hole 331 and several partitions 332. The connecting hole 331 is located between adjacent partitions 332. The partitions 332 divide the oil collecting space 300 into multiple oil collecting chambers 301. Each oil collecting chamber 301 can collect lubricating oil from the oil storage space relatively independently, increasing the amount of lubricating oil entering the oil collecting space 300.

[0043] The baffle 332 can block lubricating oil from entering the oil collecting space 300 from the circumferential direction. Under the combined action of the baffle 332 and the oil-blocking part 32, lubricating oil inside the oil collecting chamber 301 can be blocked in multiple directions, effectively collecting the lubricating oil. This effectively prevents the loss of lubricating oil during the rotation of the differential 20, increases the amount of oil entering the differential 20, and improves the lubrication effect of the reducer.

[0044] The baffle 332 is triangular in shape, extending from the edge of the oil-blocking part 32 to the edge of the differential mounting hole 34. This results in a larger area for the baffle 332, improving its oil-blocking effect. At the same time, it enlarges the volume of the oil collecting chamber 301, allowing it to hold more lubricating oil and ensuring sufficient lubricating oil enters the interior of the differential 20.

[0045] The main body 31 is provided with a buckle 311, and the reduction gear 10 is provided with a groove (not shown in the figure) that mates with the buckle 311. The connecting hole 331 is assembled to the mounting structure 11. The connecting hole 331 and the mounting structure 11 are bolted together, or other connection methods such as snap-fit ​​can be used. By assembling the oil collecting component 30 with two fixing structures, the installation strength of the oil collecting component 30 is enhanced.

[0046] The differential mounting hole 34 includes a receiving hole 341 and a limiting groove 342 formed by the expansion of the edge of the receiving hole 341. The ball end housing 211 is located inside the differential mounting hole 34 and abuts against the limiting groove 342. The shape of the ball end housing 211 is adapted to the differential mounting hole 34, and there is a small clearance fit between them. During installation, the differential mounting hole 34 passes through the ball end housing 211 and abuts against the mounting structure 11. Due to the setting of the limiting groove 342, the oil collector 30 will not rotate circumferentially when it is installed, resulting in high assembly efficiency.

[0047] like Figure 6 As shown, the oil guide component 40 includes an oil collection groove 41, an oil guiding passage 42 communicating with the oil collection groove 41, and a mounting plate 43. The oil guide component 40 is fixed to the reducer housing by the mounting plate 43. The oil collection groove 41 and the mounting plate 43 are perpendicular to each other, which reduces the size of the oil guide component 40 in a single direction and saves installation space.

[0048] The reduction gear 10 has two flat surfaces at its two ends. An oil guide 40 is mounted on the outer side of one of these flat surfaces. An oil collection groove 41 is at least partially located between the flat surfaces formed by the two ends of the reduction gear 10, allowing the oil collection groove 41 to collect the oil agitated by the reduction gear 10. The oil collection groove 41 extends from the mounting plate 43 towards the space between the two flat surfaces. The oil collection groove 41 can extend between the two flat surfaces or extend beyond them to collect the oil agitated by the reduction gear 10 more comprehensively.

[0049] The oil guide passage 42 is lower than the oil collection groove 41 in the vertical direction, allowing oil entering the oil collection groove 41 to smoothly enter the oil guide passage 42. The outlet of the oil guide passage 42 is located in the upper vertical region of the differential 20. It can be located directly above the oil inlet 212 or offset, as long as the lubricating oil in the oil guide passage 42 can drip into the differential 20.

[0050] When the reducer is working, the reduction gear 10 agitates the lubricating oil in the oil reservoir, causing the lubricating oil to splash randomly inside the reducer. The oil collection tank 41 collects the lubricating oil agitated by the reduction gear 10, allowing the lubricating oil to enter the oil guide passage 42 and drip onto the differential 20 under gravity. As the differential 20 rotates, the oil inlet 212 rotates to a position below the outlet of the oil guide passage 42, allowing lubricating oil to drip into the differential 20 through the oil inlet 212, thus lubricating the interior of the differential 20.

[0051] The combined action of the oil collector 30, the oil guide hole 223, and the oil guide 40 greatly improves the utilization rate of lubricating oil in the reducer. On the one hand, the oil collector 30 directly collects lubricating oil from the oil storage space. On the other hand, the oil guide hole 223 and the oil guide 40 collect the agitated lubricating oil. This increases the amount of lubricating oil entering the differential 20 without increasing the lubrication within the oil storage space.

[0052] This application also provides a vehicle including the aforementioned reducer. With sufficient lubrication of the differential 20 by the reducer, the possibility of differential 20 failure such as burning or wear is reduced, resulting in smooth vehicle operation and steering. At the same time, it reduces vehicle vibration and noise. The vehicle can be a gasoline-powered vehicle, a new energy vehicle, etc.

[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A speed reducer, characterized in that, include: The gear includes a reduction gear, a differential, and an oil collector. The reduction gear has an installation structure and a first assembly space located on a first side of the installation structure. The differential includes a first part located in the first assembly space. The first part has an oil inlet. The oil collector is assembled to the installation structure and located in the first assembly space. The oil collector has an oil collecting space that connects the oil inlet and an oil storage space in the reduction gear. The mounting structure has a second assembly space on its second side, and the differential includes a second part located within the second assembly space; the first part passes through the mounting structure, and the second part abuts against the mounting structure from the second side. The oil collecting component includes an annular main body, with an oil-blocking portion formed on one side of the main body facing inward, and a connecting portion formed on the other side of the main body facing radially inward. The main body, the oil-blocking portion, and the connecting portion together form the oil collecting space.

2. The reducer according to claim 1, characterized in that, The oil-blocking portion includes a first oil-blocking portion and a second oil-blocking portion. The first oil-blocking portion extends in a direction away from the main body portion, and the second oil-blocking portion extends in a radial direction.

3. The reducer according to claim 1, characterized in that, The connecting part is provided with several partitions, which divide the oil collecting space into multiple oil collecting chambers.

4. The reducer according to claim 1, characterized in that, The connecting part is provided with a connecting hole, and the connecting hole is assembled to the mounting structure; the main body is provided with a buckle, and the reduction gear is provided with a slot that cooperates with the buckle.

5. The reducer according to claim 1, characterized in that, The first part includes a ball end housing, and the oil inlet is disposed on the ball end housing; the center of the oil collecting component is provided with a differential mounting hole, the differential mounting hole includes a receiving hole and a limiting groove formed by expanding from the edge of the receiving hole, and the ball end housing is located in the differential mounting hole and can abut against the limiting groove.

6. The reducer according to claim 1, characterized in that, The reducer also includes a reducer housing and an oil guide fixed on the reducer housing. The oil guide includes an oil collection groove and an oil guide passage communicating with the oil collection groove. The oil collection groove is at least partially located between the planes formed at both ends of the reduction gear, and the outlet of the oil guide passage is located in the upper area of ​​the differential in the vertical direction.

7. The reducer according to claim 1, characterized in that, The second part includes a gear ring end housing, on which an oil guide hole is provided.

8. The reducer according to claim 1, characterized in that, The differential has a planetary gear mounting position and a half-shaft gear shim mounting position inside, and oil passages are provided at the planetary gear mounting position and the half-shaft gear shim mounting position.

9. A vehicle, characterized in that, include: The speed reducer as described in any one of claims 1-8.

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