Lubricating structure, speed reducer and vehicle

Abstract

The utility model discloses a lubrication structure, speed reducer and vehicle, lubrication structure includes the oil collecting tray that can rotate relative to the outer shell, the oil collecting tray is provided with the oil inlet hole, the oil inlet hole is used for at least partially immersing in the oil in the outer shell, an oil collecting cavity is formed between the oil collecting tray and the inner shell, the oil inlet hole is communicated with the oil collecting cavity, and the oil collecting cavity is communicated with the inner shell. And the oil collecting cavity is communicated with the interior of the inner shell through the window hole. In the embodiment of the utility model, the lubricating structure comprises the single oil collecting tray, the differential assembly can be lubricated through the single oil collecting tray, a lubricating oil way does not need to be arranged, and the structure is simple.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a lubrication structure, a speed reducer, and a vehicle. Background Technology

[0002] A differential typically includes components such as a differential housing, axle gears, and planetary gears. When the differential is in operation, the axle gears and planetary gears located within the differential housing require lubrication.

[0003] Currently, for differentials integrated into the reducer, the lubrication structure of the differential usually includes a lubrication oil passage opened on the reducer housing. During lubrication, the lubricating oil is pumped into the lubrication oil passage by an oil pump. After the lubricating oil is sprayed out from the lubrication oil passage, it is guided to the opening on the differential housing through the oil collection structure.

[0004] However, the above-mentioned lubrication structure requires the cooperation of an oil collection structure, lubrication oil circuit and oil pump, which makes the structure complex. Utility Model Content

[0005] This utility model provides a lubrication structure, a reducer, and a vehicle, aiming to at least solve the technical problem that the lubrication structure of the differential in the prior art requires the cooperation of an oil collection structure, a lubrication oil circuit, and an oil pump, resulting in a complex structure.

[0006] In a first aspect of this utility model, a lubrication structure is provided for lubricating a differential assembly, the differential assembly being disposed within an inner housing, the inner housing being located within an outer housing, and the inner housing having a window opening.

[0007] The lubrication structure includes an oil collection tray that can rotate relative to the outer casing, and the oil collection tray has an oil inlet hole for being at least partially immersed in the oil inside the outer casing.

[0008] An oil collecting cavity is formed between the oil collecting plate and the inner shell. The oil inlet is connected to the oil collecting cavity, and the oil collecting cavity is connected to the interior of the inner shell through the window.

[0009] Optionally, the oil inlet hole is designed to be completely immersed in the oil.

[0010] When the oil inlet is fully immersed in the oil, the distance between the oil inlet and the surface of the oil along the radial direction of the oil collecting plate is greater than or equal to 0 mm and less than or equal to 70 mm.

[0011] Optionally, the oil collecting pan includes an oil stirring edge portion. Along the radial direction of the oil collecting pan, the distance between the oil stirring edge portion and the surface of the oil is the sum of the distance between the oil stirring edge portion and the oil inlet hole, the size of the oil inlet hole along the radial direction of the oil collecting pan, and the distance between the oil inlet hole and the surface of the oil.

[0012] Optionally, along the radial direction of the oil collecting plate, the distance between the edge of the oil stirring portion and the oil inlet hole is greater than or equal to 15 mm and less than or equal to 50 mm.

[0013] Optionally, the oil collecting plate further includes a first side and a second side disposed opposite to each other, the first side and the second side being connected by the oil stirring edge, the oil inlet being opened on the first side, and the second side being used to contact the inner shell.

[0014] Optionally, the first side portion is angled to the axial direction of the oil collecting plate, and the angle is not a right angle.

[0015] Optionally, the oil collection tray further includes a mounting portion connected to the first side portion, the mounting portion being detachably connected to the inner housing.

[0016] Optionally, the oil inlet hole is circular in shape, and the diameter of the oil inlet hole is greater than or equal to 5 mm and less than or equal to 40 mm.

[0017] Optionally, there are multiple oil inlet holes, which are evenly distributed along the circumference of the oil collection plate.

[0018] In a second aspect of this invention, a speed reducer is also provided, comprising an outer shell, an inner shell, a speed reduction structure, and a lubrication structure as described above.

[0019] In a third aspect of this invention, a vehicle is also provided, including the speed reducer described above.

[0020] In this embodiment of the invention, the lubrication structure includes a single oil collection tray, which is sufficient to lubricate the differential components without the need for a separate lubrication oil circuit, resulting in a simple structure. Furthermore, compared to a lubrication oil circuit, the oil collection tray is easier to process and has lower manufacturing costs. Additionally, compared to the dragging losses caused by gear churning, the smooth surface of the oil collection tray minimizes dragging losses due to churning. Moreover, the oil pump does not need to pump oil into the lubrication oil circuit; it can operate in a low-power range, for example, its rated flow rate only needs to cover the motor's heat dissipation, thus reducing overall vehicle power consumption. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 A schematic diagram of the existing lubrication oil passages on the outer casing;

[0023] Figure 2 A three-dimensional structural diagram of the lubrication structure provided in the embodiment of this utility model;

[0024] Figure 3 This is a cross-sectional view of the lubrication structure provided in an embodiment of the present utility model;

[0025] Figure 4 A schematic diagram of the window opening on the inner shell provided in an embodiment of this utility model.

[0026] Figure label:

[0027] 1-Lubricating oil passage, 10-Oil collection tray, 11-First side, 111-Oil inlet, 12-Second side, 13-Oil stirring edge, 14-Mounting part, 20-Oil collection cavity, 30-Inner housing, 31-First inner housing, 311-Window hole, 32-Second inner housing, 40-Differential assembly, 50-Half shaft. Detailed Implementation

[0028] The technical solutions of the present invention will now be described with reference to the accompanying drawings in the embodiments of the present invention.

[0029] The embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. The invention will be described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0030] Reference Figure 1 For differentials integrated within a reducer, the lubrication structure typically includes a lubrication oil passage 1 located on the reducer housing. During lubrication, lubricating oil is pumped into the lubrication oil passage 1 by an oil pump. After being sprayed out from the lubrication oil passage 1, the lubricating oil is guided through an oil collecting structure to an opening on the differential housing. However, the above-mentioned lubrication structure requires the coordination of an oil collecting structure, a lubrication oil passage, and an oil pump, resulting in a complex structure, and the lubrication oil passage 1 itself is complex to manufacture. Furthermore, the oil pump needs to operate in a high-power consumption range, which is not conducive to reducing the overall vehicle power consumption. To solve the above problems, this utility model embodiment provides a lubrication structure, a reducer, and a vehicle. The lubrication structure, reducer, and vehicle mentioned above are described in detail below.

[0031] Firstly, referring to Figures 2 to 4 This utility model embodiment provides a lubrication structure for lubricating a differential assembly 40. The differential assembly 40 is disposed within an inner housing 30, which is located within an outer housing. The inner housing 30 has a window 311. The lubrication structure includes an oil collection tray 10 that can rotate relative to the outer housing. The oil collection tray 10 has an oil inlet 111. The outer housing contains oil, and the oil inlet 111 is used to be at least partially immersed in the oil. An oil collection cavity 20 is formed between the oil collection tray 10 and the inner housing 30. The oil inlet 111 communicates with the oil collection cavity 20, and the oil collection cavity 20 communicates with the interior of the inner housing 30 through the window 311.

[0032] The differential assembly 40 includes a half-shaft gear, a planetary gear, and a planetary gear shaft. The half-shaft gear is connected to the half-shaft 50, and the planetary gear is rotatably connected to the inner housing 30 via the planetary gear shaft. The inner housing 30 itself is rotatable. The inner housing 30 includes a first inner housing 31 and a second inner housing 32, which are detachably connected. A window 311 is specifically located on the first inner housing 31. The window 311 is a through hole that connects the oil collecting cavity 20 and the space inside the inner housing 30.

[0033] The oil collection tray 10 can be mounted on the inner housing 30 and rotate with it. Alternatively, it can be mounted on other rotatable components. The oil collection tray 10 can be manufactured using simple processes such as stamping. The shape of the oil inlet hole 111 can be customized according to actual needs, for example, it can be circular, square, or oblong. The height of the oil inside the outer housing can be customized according to actual needs, for example, it can be approximately 100 mm. Preferably, the oil inlet hole 111 is completely immersed in the oil.

[0034] During the rotation of the oil collection plate 10, the oil inlet 111 will be periodically immersed in the oil. When the oil inlet 111 is immersed in the oil, the oil enters the oil collection cavity 20 through the oil inlet 111 and is stored. The stored oil in the oil collection cavity 20 will splash onto the window 311 of the inner housing 30 during the rotation of the oil collection plate 10, and enter the inner housing 30 through the window 311 to lubricate the differential assembly 40 located in the inner housing 30.

[0035] In this embodiment of the invention, the lubrication structure includes a single oil collection tray 10. Lubrication of the differential assembly 40 can be achieved through this single tray, eliminating the need for a separate lubrication oil circuit and simplifying the structure. Furthermore, compared to a lubrication oil circuit, the oil collection tray 10 is easier to process and has lower manufacturing costs. Additionally, compared to the dragging losses caused by gear churning, the smooth surface of the oil collection tray 10 minimizes dragging losses due to churning. Moreover, the oil pump does not need to pump oil into the lubrication oil circuit; it can operate in a low-power range, for example, its rated flow rate only needs to cover the motor's heat dissipation, thus reducing overall vehicle power consumption.

[0036] In an optional embodiment of this utility model, the oil inlet hole 111 is fully immersed in the oil; when the oil inlet hole 111 is fully immersed in the oil, the distance between the oil inlet hole 111 and the surface of the oil is greater than or equal to 0 mm and less than or equal to 70 mm along the radial direction of the oil collecting plate 10.

[0037] The radial direction of the oil collecting plate 10 can be referenced. Figure 3 The direction indicated by arrow A. When the oil inlet 111 is fully immersed in the oil, the distance between the oil inlet 111 and the surface of the oil can be 0mm, 10mm, 15mm, 20mm, 30mm, 50mm, 70mm, etc., along the radial direction of the oil collection plate 10.

[0038] The oil collecting plate 10 includes an oil stirring edge portion 13. Along the radial direction of the oil collecting plate 10, the distance between the oil stirring edge portion 13 and the surface of the oil is the sum of the distance between the oil stirring edge portion 13 and the oil inlet hole, the size of the oil inlet hole 111 along the radial direction of the oil collecting plate 10, and the distance between the oil inlet hole 111 and the surface of the oil.

[0039] The oil stirring edge 13 is the outer edge of the oil collecting plate 10. When the oil inlet hole 111 is circular, its radial dimension along the oil collecting plate 10 is also its diameter. When the oil inlet hole 111 is fully immersed in the oil, the height of the oil level in the oil collecting plate 10 is basically the same as the height of the oil level inside the outer shell.

[0040] With the distance between the oil stirring edge 13 and the oil inlet hole, and the radial dimension of the oil inlet hole 111 along the oil collection plate 10, fixed, the greater the distance between the oil inlet hole 111 and the oil surface when the oil inlet hole 111 is fully immersed in the oil, the greater the distance between the oil stirring edge 13 and the oil surface, and the more oil is stored in the oil collection plate 10. With the distance between the oil stirring edge 13 and the oil inlet hole, and the radial dimension of the oil inlet hole 111 along the oil collection plate 10, fixed, the amount of oil stored in the oil collection plate 10 can be adjusted by regulating the distance between the oil inlet hole 111 and the oil surface when the oil inlet hole 111 is fully immersed in the oil. This allows for adjustment of the lubricating oil quantity in the differential assembly 40, enabling the oil collection plate 10 to adapt to the different lubrication requirements of different differential assemblies 40, thus enhancing the versatility of the oil collection plate 10.

[0041] When the oil collection tray 10 rotates, the oil stored in it forms a dynamic level under centrifugal force. This dynamic level is affected by the rotational speed of the oil collection tray 10 and the amount of oil stored within it. The amount of oil stored in the oil collection tray 10 must satisfy the condition that, at different rotational speeds within the actual rotational speed range, the dynamic level of the oil stored in the oil collection tray 10 can submerge the lowest point of the window 311 in the inner housing 30. When the amount of oil stored in the oil collection tray 10 satisfies the above condition, the oil collection tray 10 can ensure lubrication of the differential assembly 40 at different rotational speeds within the actual rotational speed range. The boundary values ​​of the actual rotational speed range are the lowest and highest rotational speeds of the oil collection tray 10 during actual rotation.

[0042] In an optional embodiment of this utility model, the distance between the oil-stirring edge portion 13 and the oil inlet hole 111 along the radial direction of the oil collecting pan 10 is greater than or equal to 15 mm and less than or equal to 50 mm. The distance between the oil-stirring edge portion 13 and the oil inlet hole 111 can be 15 mm, 20 mm, 30 mm, 35 mm, 40 mm, 50 mm, etc. In this embodiment, when the distance between the oil-stirring edge portion 13 and the oil inlet hole 111 is within the above range, even if the immersion depth of the oil inlet hole 111 is small, that is, when the oil inlet hole 111 is completely immersed in the oil, the distance between the oil inlet hole 111 and the surface of the oil along the radial direction of the oil collecting pan 10 is small, thus ensuring that the oil collecting pan 10 can store a certain amount of oil.

[0043] In an optional embodiment of this utility model, the oil collecting tray 10 further includes a first side portion 11 and a second side portion 12 disposed opposite to each other. The first side portion 11 and the second side portion 12 are connected by an oil stirring edge portion 13. An oil inlet hole 111 is formed on the first side portion 11, and the second side portion 12 is used to contact the inner housing 30. In this embodiment, the contact between the second side portion 12 and the inner housing 30 can prevent oil from entering or flowing out through the gap between the second side portion 12 and the inner housing 30, thereby preventing oil from entering or flowing out through a non-predetermined path.

[0044] In an optional embodiment of this utility model, the first side portion 11 is angled to the axial direction of the oil collecting tray 10, and the angle is not a right angle. Specifically, the angle between the first side portion 11 and the axial direction of the oil collecting tray 10 can be 50°-80°. When the first side portion 11 is angled to the axial direction of the oil collecting tray 10, and the angle is acute, the amount of oil stored in the oil collecting tray 10 can be ensured while reducing the space occupied by the oil collecting tray 10.

[0045] In an optional embodiment of this utility model, the oil collecting tray 10 further includes a mounting portion 14 connected to the first side portion 11, and the mounting portion 14 is detachably connected to the inner housing 30. The mounting portion 14 has a through hole so that it can be fitted onto the second inner housing 32. The connection between the mounting portion 14 and the inner housing 30 can be a bolt connection, a snap-fit ​​connection, or the like. When the inner housing 30 includes a first inner housing 31 and a second inner housing 32, the oil collecting tray 10, the second inner housing 32, and the first inner housing 31 can be fastened together using threaded fasteners such as bolts and screws. In this method, it is not necessary to additionally provide mounting holes for connecting the oil collecting tray 10 on the inner housing 30. In this embodiment, the oil collecting tray 10 is detachably connected to the inner housing 30, facilitating the installation and removal of the oil collecting tray 10.

[0046] In one optional embodiment of this utility model, the oil inlet hole 111 is circular in shape, and the diameter of the oil inlet hole 111 is greater than or equal to 5 mm and less than or equal to 40 mm. The diameter of the oil inlet hole 111 can be 5 mm, 10 mm, 15 mm, 20 mm, 30 mm, 40 mm, etc., to ensure that the oil in the outer casing can smoothly enter the oil collection tray 10.

[0047] In an optional embodiment of this utility model, there are multiple oil inlet holes 111, which are evenly distributed along the circumference of the oil collection plate 10. The number of oil inlet holes 111 can range from 1 to 20, and is preferably 2, 3, 4, or 5. During one rotation of the oil collection plate 10, oil is introduced multiple times through the multiple oil inlet holes 111, thus shortening the oil replenishment and circulation cycle.

[0048] Secondly, this utility model provides a speed reducer, which includes an outer shell, an inner shell 30, a differential assembly 40, and a lubrication structure provided in any of the first aspects. The lubrication structure is used for lubricating the differential assembly 40, which is disposed within the inner shell 30, which is located within the outer shell. The inner shell 30 has a window 311. The lubrication structure includes an oil collecting tray 10 rotatable relative to the outer shell, with an oil inlet 111 for at least partial immersion in oil within the outer shell. An oil collecting cavity 20 is formed between the oil collecting tray 10 and the inner shell 30, and the oil inlet 111 communicates with the oil collecting cavity 20. The oil collecting cavity 20 communicates with the interior of the inner shell 30 through the window 311. The outer shell is also the housing of the speed reducer.

[0049] Since the reducer includes the aforementioned lubrication structure, it also possesses the beneficial effects of the aforementioned lubrication structure, which will not be elaborated upon here.

[0050] Thirdly, this utility model embodiment also provides a vehicle, which includes the reducer provided in the second aspect above.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0052] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0053] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0054] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

[0055] The lubrication structure, reducer, and vehicle provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the structure and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A lubrication structure, characterized in that, The lubrication structure is used for lubrication of the differential assembly, which is located inside the inner housing, which is situated within the outer housing. A window is provided on the inner housing. The lubrication structure includes an oil collection tray that can rotate relative to the outer casing, and the oil collection tray has an oil inlet hole for being at least partially immersed in the oil inside the outer casing. An oil collecting cavity is formed between the oil collecting plate and the inner shell. The oil inlet is connected to the oil collecting cavity, and the oil collecting cavity is connected to the interior of the inner shell through the window.

2. The lubrication structure according to claim 1, characterized in that, The oil inlet hole is designed to be completely immersed in the oil. When the oil inlet is fully immersed in the oil, the distance between the oil inlet and the surface of the oil along the radial direction of the oil collecting plate is greater than or equal to 0 mm and less than or equal to 70 mm.

3. The lubrication structure according to claim 2, characterized in that, The oil collecting pan includes an oil stirring edge portion. Along the radial direction of the oil collecting pan, the distance between the oil stirring edge portion and the surface of the oil is the sum of the distance between the oil stirring edge portion and the oil inlet hole, the size of the oil inlet hole along the radial direction of the oil collecting pan, and the distance between the oil inlet hole and the surface of the oil.

4. The lubrication structure according to claim 3, characterized in that, Along the radial direction of the oil collecting plate, the distance between the edge of the oil stirring part and the oil inlet hole is greater than or equal to 15 mm and less than or equal to 50 mm.

5. The lubrication structure according to claim 3, characterized in that, The oil collecting plate also includes a first side and a second side disposed opposite to each other. The first side and the second side are connected by the oil stirring edge. The oil inlet is opened on the first side, and the second side is used to contact the inner shell.

6. The lubrication structure according to claim 5, characterized in that, The first side portion is set at an angle to the axial direction of the oil collecting plate, and the angle is not a right angle.

7. The lubrication structure according to claim 5, characterized in that, The oil collecting pan also includes a mounting portion connected to the first side portion, which is detachably connected to the inner housing.

8. The lubrication structure according to any one of claims 1 to 7, characterized in that, The oil inlet hole is circular in shape, and its diameter is greater than or equal to 5 mm and less than or equal to 40 mm.

9. The lubrication structure according to any one of claims 1 to 7, characterized in that, The number of oil inlet holes is multiple, and the multiple oil inlet holes are evenly distributed along the circumference of the oil collecting plate.

10. A speed reducer, characterized in that, It includes an outer casing, an inner casing, a differential assembly, and a lubrication structure as described in any one of claims 1 to 9.

11. A vehicle, characterized in that, Includes the speed reducer as described in claim 10.

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