Retarder assembly and vehicle

Abstract

The application discloses a reducer assembly and a vehicle. The reducer assembly comprises a first shell, an input shaft and a driving member. The first shell is provided with an oil guide part. The input shaft is provided with a communication cavity. The communication cavity comprises a first port and a second port arranged oppositely. The oil guide part at least partially extends into the communication cavity through the first port and communicates with the communication cavity. The driving member comprises a driving shaft. The driving shaft is connected to the communication cavity through the second port. An oil cavity is formed among the driving shaft, the oil guide part and the input shaft. The application cancels the input shaft oil guide pipe, integrates the function of the input shaft oil guide pipe on the oil guide part of the first shell, reduces the cost of manufacturing the input shaft oil guide pipe, saves the process of pressing the input shaft oil guide pipe, simplifies the manufacturing process of the reducer and reduces the cost of the production line.

Description

Technical Field

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

[0002] In some existing reducer assemblies, cooling oil needs to be introduced from the oil passages in the rear housing of the reducer through the input shaft guide pipe into the inner hole of the motor shaft to cool the motor rotor. The rotating motor shaft then throws the oil, cooling the rotor. The need for the input shaft guide pipe increases the manufacturing cost of this component and adds a pressing-fitting process, complicating the reducer manufacturing process and increasing the component's cost. Utility Model Content

[0003] This application provides a speed reducer assembly and a vehicle to solve the problem that existing speed reducer assemblies require an input shaft oil pipe, which complicates the manufacturing process and increases the cost of parts.

[0004] To solve the above-mentioned technical problems, this application proposes a reducer assembly, including: a first housing with an oil guide portion; an input shaft with a communicating cavity, the communicating cavity including a first port and a second port disposed opposite to each other, the oil guide portion extending into the communicating cavity through the first port and communicating with the communicating cavity; and a drive member including a drive shaft, the drive shaft being connected to the communicating cavity through the second port through at least a portion, and an oil cavity being formed between the drive shaft, the oil guide portion, and the input shaft.

[0005] The outer surface of the oil guide part is fitted with a clearance between it and the inner wall of the connecting cavity.

[0006] The oil guide section is integrally formed or welded to the first housing.

[0007] The length of the oil guide extending into the connecting cavity is greater than or equal to 5 mm and less than or equal to 15 mm.

[0008] The oil guide section is provided with a first oil passage; the first housing is provided with a second oil passage, the first oil passage and the second oil passage are connected, and the dimension of the first oil passage along the length direction perpendicular to the first oil passage is smaller than the minimum dimension of the second oil passage along the length direction perpendicular to the second oil passage.

[0009] The dimension of the first oil passage along the direction perpendicular to its length is greater than or equal to 6 mm and less than or equal to 8 mm.

[0010] The dimension of the second oil passage along the direction perpendicular to its length is greater than or equal to 10 mm.

[0011] In the direction closest to the first oil passage, the second oil passage gradually decreases in size along a dimension perpendicular to its length.

[0012] The first housing is also provided with a third oil passage; the reducer assembly also includes a second housing, which is provided with a fourth oil passage, and the third oil passage is connected to the second oil passage and the fourth oil passage respectively.

[0013] To solve the above-mentioned technical problems, this application proposes a vehicle including the aforementioned reducer assembly.

[0014] The reducer assembly of this application includes a first housing, an input shaft, and a drive component. The first housing is provided with an oil guide portion. The input shaft is provided with a communicating cavity. The communicating cavity includes a first port and a second port disposed opposite to each other. The oil guide portion extends at least partially into the communicating cavity through the first port and communicates with the communicating cavity. The drive component includes a drive shaft. The drive shaft is at least partially connected to the communicating cavity through the second port. An oil chamber is formed between the drive shaft, the oil guide portion, and the input shaft.

[0015] This application eliminates the need for a separate input shaft oil guide pipe, integrating its function into the oil guide portion of the first housing. This reduces the cost of manufacturing the input shaft oil guide pipe and eliminates the need for press-fitting it, simplifying the reducer manufacturing process and reducing production line costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of the structure of one embodiment of the reducer assembly of this application; Figure 2 yes Figure 1 A schematic diagram of the cross-section of AA is shown below; Figure 3 yes Figure 2 An enlarged schematic diagram of B shown.

[0017] Reference numerals: 10, reducer assembly; 11, first housing; 111, oil guide; 1111, first oil passage; 112, second oil passage; 113, third oil passage; 114, input shaft; 1141, connecting cavity; 11411, first port; 11412, second port; 115, drive component; 1151, drive shaft; 116, oil chamber; 12, second housing; 121, fourth oil passage. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] The reducer assembly and vehicle provided in this application will be described in detail below with reference to embodiments.

[0021] Please see Figures 1 to 2 , Figure 1 This is a schematic diagram of the structure of one embodiment of the reducer assembly of this application. Figure 2 yes Figure 1 The cross-sectional view of AA is shown. This application provides a reducer assembly. The reducer assembly 10 includes a first housing 11, an input shaft 114, and a drive member 115. The first housing 11 is provided with an oil guide portion 111. The input shaft 114 is provided with a communicating cavity 1141. The communicating cavity 1141 includes a first port 11411 and a second port 11412 disposed opposite to each other. The oil guide portion 111 extends at least partially into the communicating cavity 1141 through the first port 11411 and communicates with the communicating cavity 1141. The drive member 115 includes a drive shaft 1151. The drive shaft 1151 is at least partially connected to the communicating cavity 1141 through the second port 11412. An oil cavity 116 is formed between the drive shaft 1151, the oil guide portion 111, and the input shaft 114.

[0022] The first housing 11 may be, but is not limited to, an aluminum alloy housing. An oil guide 111 is fixedly disposed on the first housing 11 near the first port 11411 of the input shaft 114's connecting cavity 1141. The oil guide 111 communicates with the connecting cavity 1141 and is used to transport cooling oil from the oil guide 111 to the connecting cavity 1141. The drive shaft 1151 may be, but is not limited to, a motor shaft. The drive shaft 1151 is at least partially connected to the second port 11412 of the input shaft 114. The input shaft 114 transports cooling oil to the drive shaft 1151 through the second port 11412.

[0023] In the reducer assembly 10, components such as the drive shaft 1151 and input shaft 114 require cooling oil for cooling and lubrication. The first housing 11, through an oil guide 111, engages with the second port 11412 of the input shaft 114 to deliver cooling oil to the connecting cavity 1141 of the input shaft 114, thus cooling the input shaft 114. An oil cavity 116 is formed between the drive shaft 1151, the oil guide 111, and the input shaft 114. When the input shaft 114 rotates, the cooling oil within the oil cavity 116 is naturally rotated by the input shaft 114. The oil guide 111 continuously delivers cooling oil, allowing it to freely diffuse along the first port 11411 to the second port 11412 within the oil cavity 116, and then flow along the second port 11412 to the drive shaft 1151, thus achieving cooling and lubrication of the drive shaft 1151.

[0024] By setting the oil guide part 111 to cooperate with the input shaft 114, cooling oil is delivered to the oil chamber 116. Under the rotation of the input shaft 114, the cooling oil flows naturally to the drive shaft 1151, achieving a cooling and lubrication effect on the drive shaft 1151. By eliminating the traditional input shaft oil guide pipe, the oil guide part 111 alone can achieve the same cooling and lubrication effect on components such as the drive shaft 1151 and input shaft 114 in the reducer assembly 10. This saves the cost of manufacturing the input shaft oil guide pipe and reduces the process of press-fitting the input shaft oil guide pipe into the input shaft 114, simplifying the manufacturing process of the reducer assembly 10 and improving mass production efficiency.

[0025] Please see Figure 3 , Figure 3 yes Figure 2 An enlarged schematic diagram of B is shown. (Combined with...) Figures 1 to 2 In some embodiments, the outer surface of the oil guide portion 111 is clearance-fitted with the inner wall of the communicating cavity 1141.

[0026] The outer surface of the oil guide portion 111 is provided in a shape corresponding to the inner wall of the connecting cavity 1141. The oil guide portion 111 extends at least partially into the connecting cavity 1141 and is in clearance fit with the inner wall of the connecting cavity 1141.

[0027] The oil guide 111 is disposed in the first housing 11 and remains stationary during the operation of the reducer assembly 10. The input shaft 114 rotates during the operation of the reducer assembly 10. The oil guide 111 and the communicating cavity 1141 of the input shaft 114 are provided with a clearance fit to avoid friction and wear between the two during the operation of the reducer assembly 10.

[0028] Since other internal structures of the reducer assembly 10 also require cooling oil for lubrication, it is necessary to discharge some cooling oil from the first port 11411 of the input shaft 114 into the reducer assembly 10. Traditionally, the input shaft oil guide pipe discharges cooling oil from the first port 11411 through a clearance fit with the inner wall of the connecting cavity 1141 of the input shaft 114. This application achieves the same cooling and lubrication effect for other internal structures of the reducer assembly 10 by discharging cooling oil through a clearance fit between the oil guide 111 and the inner wall of the connecting cavity 1141, thus eliminating the need for an input shaft oil guide pipe.

[0029] Please see Figures 1 to 3 In some embodiments, the oil guide portion 111 is integrally formed or welded to the first housing 11.

[0030] The oil guide portion 111 is integrally formed with the first housing 11, and in this case, the oil guide portion 111 is a boss at one end of the first housing 11 near the first port 11411 of the input shaft 114. Alternatively, the oil guide portion 111 is welded to the first housing 11 at the position near the first port 11411 of the input shaft 114.

[0031] By integrally molding the oil guide section 111 with the first housing 11, the first housing 11 can function as an input shaft oil guide pipe upon molding, simplifying the manufacturing process of the reducer assembly 10. Welding the oil guide section 111 to the first housing 11 facilitates maintenance and adjustment of its functional structure, and allows for the addition of the oil guide section 111 to the first housing 11, expanding its application scenarios.

[0032] In some embodiments, the length of the oil guide portion 111 extending into the communicating cavity 1141 is greater than or equal to 5 mm and less than or equal to 15 mm.

[0033] The length of the oil guide 111 extending into the connecting cavity 1141 can be, but is not limited to, 5mm, 6mm, 8mm, 11mm, 13mm, and 15mm.

[0034] By setting the length of the oil guide 111 extending into the connecting cavity 1141 to be greater than or equal to 5 mm, the oil guide 111 can have a sufficient guiding effect with the inner wall of the connecting cavity 1141, allowing the cooling oil to flow from the oil guide 111 to the oil cavity 116 inside the input shaft 114. By setting the length of the oil guide 111 extending into the connecting cavity 1141 to be less than or equal to 15 mm, the length of the oil guide 111 inside the input shaft 114 is prevented from being too long, which would cause the oil guide 111 to collide and rub against the input shaft 114 due to vibration during rotation, thereby avoiding wear and damage between the input shaft 114 and the oil guide 111.

[0035] In some embodiments, the oil guide portion 111 is provided with a first oil passage 1111. The first housing 11 is provided with a second oil passage 112. The first oil passage 1111 and the second oil passage 112 are connected. The dimension of the first oil passage 1111 along the length direction perpendicular to the first oil passage 1111 is smaller than the minimum dimension of the second oil passage 112 along the length direction perpendicular to the second oil passage 112.

[0036] The cross-section of the first oil passage 1111 can be, but is not limited to, circular or rectangular. The cross-section of the second oil passage 112 can also be, but is not limited to, circular or rectangular. The first oil passage 1111 is disposed through the center of the oil guide portion 111 along the axial direction of the input shaft 114. The second oil passage 112 is disposed along the inside of the first housing 11 in a direction perpendicular to the first oil passage 1111. The second oil passage 112 is perpendicularly connected to the end of the first oil passage 1111 opposite to the input shaft 114. In some embodiments, the second oil passage 112 can be disposed at an angle other than perpendicular to the first oil passage 1111.

[0037] Cooling oil flows along the second oil passage 112 into the first oil passage 1111. The second oil passage 112 supplies cooling oil to the first oil passage 1111. By setting the cross-sectional dimension of the second oil passage 112 to be larger than that of the first oil passage 1111, the flow velocity of the cooling oil in the first oil passage 1111 can be greater than that in the second oil passage 112, thus giving the cooling oil a larger flow velocity when it exits through the port of the oil guide 111. The cooling oil is sprayed into the oil cavity 116 inside the input shaft 114 through the port of the oil guide 111, making the cooling oil coverage of the oil cavity 116 more uniform and the cooling effect better.

[0038] By connecting the first oil passage 1111 and the second oil passage 112, and making the dimension of the first oil passage 1111 along the length direction perpendicular to the length direction smaller than the minimum dimension of the second oil passage 112 along the length direction perpendicular to the length direction, the cooling oil flow rate in the first oil passage 1111 is greater than the cooling oil flow rate in the second oil passage 112. This causes the cooling oil to be sprayed out along the end of the first oil passage 1111 into the oil cavity 116 inside the input shaft 114, fully covering the oil cavity 116 and achieving a better cooling effect.

[0039] Please see Figures 1 to 3 In some embodiments, the dimension of the first oil passage 1111 along the length direction perpendicular to the first oil passage 1111 is greater than or equal to 6 mm and less than or equal to 8 mm.

[0040] The dimensions of the first oil passage 1111 along the length direction perpendicular to the first oil passage 1111 can be, but are not limited to, 6mm, 6.5mm, 7mm, and 8mm.

[0041] By setting the dimension of the first oil passage 1111 along the length direction perpendicular to the first oil passage 1111 to be greater than or equal to 6 mm and less than or equal to 8 mm, the cooling oil in the first oil passage 1111 can maintain a high flow rate, so that the cooling oil can be sprayed out along the port of the first oil passage 1111 into the oil cavity 116 inside the input shaft 114 to fully cool the input shaft 114.

[0042] In some embodiments, the dimension of the second oil passage 112 along the direction perpendicular to its length is greater than or equal to 10 mm.

[0043] The dimensions of the second oil passage 112 along the direction perpendicular to its length can be, but are not limited to, 10mm, 11mm, 13mm, and 15mm.

[0044] By setting the dimension of the second oil passage 112 perpendicular to its length to be greater than or equal to 10 mm, a large flow rate can be achieved in the second oil passage 112, thereby delivering sufficient cooling oil into the first oil passage 1111. In conjunction with the first oil passage 1111, the flow velocity of the cooling oil increases after entering the first oil passage 1111, thus ensuring that the first oil passage 1111 can stably spray out cooling oil with a certain flow rate and volume.

[0045] In some embodiments, in the direction near the first oil passage 1111, the second oil passage 112 gradually decreases in size along a dimension perpendicular to the length of the second oil passage 112.

[0046] In this design, the dimension of the second oil passage 112 gradually decreases perpendicular to its length in the direction close to the first oil passage 1111. That is, the cross-sectional dimension of the second oil passage 112 has a contracting trend along the direction of cooling oil flow.

[0047] By setting the cross-sectional size of the second oil passage 112 to gradually decrease along the direction close to the first oil passage 1111, the flow velocity of the cooling oil in the second oil passage 112 is increased uniformly, thereby achieving the acceleration of the cooling oil without causing poor flow due to excessive changes in the cross-sectional area of ​​the flow passage.

[0048] In some embodiments, along the direction close to the input shaft 114, the first oil passage 1111 gradually decreases in size perpendicular to its length, that is, the cross-sectional size of the first oil passage 1111 gradually decreases.

[0049] The cross-sectional dimension of the first oil passage 1111 gradually decreases along the direction close to the input shaft 114, so that the cooling oil is also steadily accelerated in the first oil passage 1111. This can further improve the spraying effect of the cooling oil along the port of the first oil passage 1111, and achieve a wider coverage of the oil chamber 116 of the input shaft 114.

[0050] Please see Figures 1 to 3 In some embodiments, the first housing 11 is further provided with a third oil passage 113. The reducer assembly 10 also includes a second housing 12. The second housing 12 is provided with a fourth oil passage 121. The third oil passage 113 is connected to the second oil passage 112 and the fourth oil passage 121 respectively.

[0051] The cross-section of the third oil passage 113 can be, but is not limited to, circular or rectangular. The cross-section of the fourth oil passage 121 can be, but is not limited to, circular or rectangular. The second housing 12 can be, but is not limited to, an aluminum alloy housing. The third oil passage 113 is arranged along a direction perpendicular to the second oil passage 112 within the first housing 11. The third oil passage 113 is perpendicularly connected to one end of the second oil passage 112 opposite to the first oil passage 1111. In some embodiments, the third oil passage 113 can be arranged at an angle other than perpendicular to the second oil passage 112. The fourth oil passage 121 is coaxially connected to the third oil passage 113. In some embodiments, the fourth oil passage 121 is angularly connected to the third oil passage 113.

[0052] The second housing 12 is the housing of the reducer assembly 10 near the drive shaft 1151. The first housing 11 is the housing of the reducer assembly 10 near the input shaft 114. By providing the third oil passage 113 and the fourth oil passage 121, it is easier to adjust the direction and flow rate of the cooling oil. Furthermore, by adjusting the connection angle of the third oil passage 113 and the fourth oil passage 121, the positional distribution of the oil passages within the first housing 11 and the second housing 12 can be changed. This allows for the avoidance of other structures according to the specific configuration of the reducer assembly 10, enhancing the overall compactness of the housing, accommodating more types of reducer assembly 10 structures, and broadening the application range.

[0053] This application provides a vehicle (not shown in the figure). The vehicle includes the aforementioned reduction gear assembly 10.

[0054] It should be noted that the reducer assembly 10 in this embodiment is the same as the reducer assembly 10 described in the above embodiment, and will not be repeated here.

[0055] By installing a reducer assembly 10 in the vehicle, the input shaft oil pipe in the traditional reducer assembly 10 is eliminated, and the function of the input shaft oil pipe is integrated into the oil guide part 111 of the first housing 11. This saves the cost of manufacturing the input shaft oil pipe and reduces the process of press-fitting the input shaft oil pipe into the input shaft 114, thereby reducing the cost of producing the reducer assembly 10 and simplifying the production process.

[0056] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of those features. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. A process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0057] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A speed reducer assembly, characterized in that, include: The first housing is provided with an oil guide section; An input shaft is provided with a communicating cavity, the communicating cavity including a first port and a second port disposed opposite to each other, and the oil guide part extends into the communicating cavity at least partially through the first port and communicates with the communicating cavity; A drive unit includes a drive shaft, which is at least partially connected to the communicating cavity through the second port, and an oil cavity is formed between the drive shaft, the oil guide portion, and the input shaft.

2. The reducer assembly according to claim 1, characterized in that, The outer surface of the oil guide part is fitted with a clearance between it and the inner sidewall of the communicating cavity.

3. The reducer assembly according to claim 1, characterized in that, The oil guide portion is integrally formed or welded to the first housing.

4. The reducer assembly according to claim 1, characterized in that, The length of the oil guide portion extending into the communicating cavity is greater than or equal to 5 mm and less than or equal to 15 mm.

5. The reducer assembly according to any one of claims 1 to 4, characterized in that, The oil guide portion is provided with a first oil passage; the first housing is provided with a second oil passage, the first oil passage and the second oil passage are connected, and the dimension of the first oil passage along the length direction perpendicular to the first oil passage is smaller than the minimum dimension of the second oil passage along the length direction perpendicular to the second oil passage.

6. The reducer assembly according to claim 5, characterized in that, The dimension of the first oil passage along the direction perpendicular to its length is greater than or equal to 6 mm and less than or equal to 8 mm.

7. The reducer assembly according to claim 5, characterized in that, The dimension of the second oil passage along the direction perpendicular to its length is greater than or equal to 10 mm.

8. The reducer assembly according to claim 5, characterized in that, In the direction close to the first oil passage, the second oil passage gradually decreases in size along a dimension perpendicular to its length.

9. The reducer assembly according to claim 5, characterized in that, The first housing is also provided with a third oil passage; the reducer assembly also includes a second housing, the second housing is provided with a fourth oil passage, and the third oil passage is connected to the second oil passage and the fourth oil passage respectively.

10. A vehicle, characterized in that, Includes the reducer assembly as described in any one of claims 1 to 9.

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