Differential mechanism and vehicle

Abstract

The differential mechanism comprises an oil pump and an outer shell, the oil pump is fixedly arranged on the outer shell, an installation space is defined by the outer shell, an oil flow channel is formed in the outer shell, an oil spraying opening used for lubricating is formed in the inner side wall of the outer shell, and the oil spraying opening is communicated with the oil pump. The oil flow channel is communicated with the oil pump and the oil spraying opening, and the oil spraying opening is communicated with the installation space. According to the differential mechanism, by arranging the oil pump and the oil liquid flow channel, the effect that lubricating oil conducts active lubricating and directional lubricating on the interior of the differential mechanism can be achieved, and the stability and reliability of lubricating of the differential mechanism can be improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a differential and a vehicle. Background Technology

[0002] In related technologies, existing differentials mainly use the rotation of gear structures to throw lubricating oil from the bottom of the differential housing into the differential for lubrication. However, under low-speed operation, it is impossible to splash enough lubricating oil to effectively lubricate the internal components of the differential. The lubrication effect depends on specific operating conditions, and the amount of splashed lubricating oil is relatively random, which cannot maintain a stable lubrication effect inside the differential. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a differential that can achieve active and directional lubrication of the differential's internal components by lubricating oil, thereby improving the stability and reliability of differential lubrication.

[0004] This utility model also proposes a vehicle using the above-mentioned differential.

[0005] A differential according to a first aspect of the present invention includes: an oil pump and a housing, wherein the oil pump is fixedly disposed in the housing, the housing defines an installation space, an oil flow channel is formed within the housing, an oil injection port for lubrication is formed on the inner sidewall of the housing, the oil flow channel connects the oil pump and the oil injection port, and the oil injection port communicates with the installation space.

[0006] According to the embodiments of this application, the differential can achieve active and directional lubrication of the differential interior by setting an oil pump and oil flow channels, which is beneficial to improving the stability and reliability of differential lubrication.

[0007] According to some embodiments of the present invention, there are multiple oil injection ports, and all of the multiple oil injection ports are connected to the oil pump through the oil flow channel.

[0008] According to some embodiments of the present invention, the plurality of fuel injectors are located at different positions on the outer casing.

[0009] According to some embodiments of the present invention, the cross-sectional area of ​​the plurality of fuel injection ports is the same.

[0010] According to some embodiments of the present invention, the oil flow channel includes: a main flow channel and multiple branch flow channels, wherein each of the multiple branch flow channels is connected to the oil pump through the main flow channel, and each of the multiple branch flow channels is connected to multiple oil injection ports respectively.

[0011] According to some embodiments of this utility model, the plurality of branch channels and the plurality of fuel injection ports are connected in a one-to-one correspondence.

[0012] According to some embodiments of the present invention, the cross-sectional areas of the plurality of branch channels are the same.

[0013] According to some embodiments of the present invention, the cross-sectional shapes of the plurality of branch channels are the same.

[0014] According to some embodiments of the present invention, the cross-sectional area of ​​the branch channel gradually decreases along the oil flow direction within the branch channel.

[0015] The vehicle according to a second aspect of the present invention includes the differential described in the above embodiments.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of a differential according to an embodiment of this application;

[0019] Figure 2 This is a partial structural schematic diagram of the differential according to an embodiment of this application;

[0020] Figure 3 This is a cross-sectional view of the differential at one angle according to an embodiment of this application;

[0021] Figure 4 This is a cross-sectional view of the differential from another angle according to an embodiment of this application.

[0022] Figure label:

[0023] Differential 1,

[0024] Oil pump 10,

[0025] 20 housing, 21 installation space, 22 oil flow channel, 23 fuel injector.

[0026] Pressure filter 30,

[0027] Oil cooler 40. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] The following is for reference. Figures 1-4 The differential 1 according to an embodiment of the present invention can be installed on a vehicle.

[0030] According to the differential 1 of the first aspect embodiment of the present invention, such as Figures 1-4 As shown, the differential 1 may include: an oil pump 10 and a housing 20. The oil pump 10 is fixed to the housing 20. The housing 20 defines an installation space 21. An oil flow channel 22 is formed inside the housing 20. An oil injection port 23 for lubrication is formed on the inner sidewall of the housing 20. The oil flow channel 22 connects the oil pump 10 and the oil injection port 23. The oil injection port 23 is connected to the installation space 21.

[0031] It should be noted that in the relevant technologies, existing differentials mainly use the rotation of gears to throw the lubricating oil at the bottom of the differential housing into the differential for lubrication. However, under low-speed operation, it is impossible to splash enough lubricating oil to effectively lubricate the internal components of the differential. The lubrication effect depends on specific operating conditions, and the amount of splashed lubricating oil is relatively random, which cannot maintain a stable lubrication effect inside the differential.

[0032] Based on this, this application proposes a differential 1, which may include an oil pump 10 and a housing 20. The oil pump 10 is detachably connected to the housing 20 by bolts. The housing of the oil pump 10 may be integrally formed with the housing 20, and the oil pump 10 may be integrated with the housing 20 into a single structure. The oil pump 10 is fixed to the housing 20. The differential 1 mainly consists of gear structures such as left and right half-shaft gears, planetary gears, and gear carriers. The housing 20 defines an installation space 21, and the gear structure may be located within the installation space 21. The lubricating oil in the differential 1 can be used to lubricate the gear structure, and unused lubricating oil may accumulate at the bottom of the installation space 21 due to gravity. An oil flow channel 22 may be formed inside the housing 20. It should be noted that the oil flow channel 22 is formed within the housing wall of the housing 20, and the lubricating oil can flow within the oil flow channel 22. The oil pump 10 can communicate with the mounting space 21 and the oil flow channel 22. The oil pump 10 can pump the lubricating oil located at the bottom of the mounting space 21 into the oil flow channel 22, thereby realizing the flow of lubricating oil in the oil flow channel 22. The inner sidewall of the housing 20 is formed with an oil spray nozzle 23 for lubrication. The oil spray nozzle 23 can be set to correspond to the parts that need lubrication. The oil flow channel 22 can flow with the oil spray nozzle 23. The lubricating oil in the oil flow channel 22 can be sprayed out through the oil spray nozzle 23, thereby achieving the effect of directional oil spray lubrication inside the differential 1.

[0033] Unused lubricating oil can accumulate at the bottom of the mounting space 21. The oil pump 10 can pump the lubricating oil, which enters the oil flow channel 22 through the pump and flows to the injection port 23. The lubricating oil can then be sprayed from the injection port 23 onto the corresponding parts that require lubrication, thus achieving directional lubrication of the differential 1. Due to gravity, the lubricating oil can fall back to the bottom of the mounting space 21, achieving oil recycling, reducing oil consumption, and improving vehicle economy. By setting up the oil pump 10 and the oil flow channel 22, active and directional lubrication of the differential 1 can be achieved, which is beneficial to improving the stability and reliability of differential 1 lubrication.

[0034] As an example, the differential 1 may also include a suction filter, a pressure filter 30, and an oil cooler 40. The suction filter can be connected to the inlet of the oil pump 10 and can be connected between the oil pump 10 and the mounting space 21. The suction filter can perform preliminary filtration of impurities in the lubricating oil. The pressure filter 30 can be connected to the outlet of the oil pump 10 and can be connected between the oil pump 10 and the oil flow channel 22. The pressure filter 30 can be fixed to the housing 20. The pressure filter 30 can further filter impurities in the lubricating oil, which helps to improve the cleanliness of the lubricating oil, allowing the lubricating oil to be recycled and saving costs. The oil cooler 40 can be connected to the oil flow channel 22. The lubricating oil in the oil flow channel 22 can flow through the oil cooler 40, which can cool the lubricating oil, thereby maintaining the viscosity of the lubricating oil and maintaining its lubricating performance.

[0035] In some embodiments of this utility model, there are multiple fuel injection ports 23, and all multiple fuel injection ports 23 are connected to the oil pump 10 through the oil flow channel 22.

[0036] There can be multiple oil injection ports 23, each of which can be connected to the oil pump 10. After the lubricating oil enters the oil flow channel 22 through the oil pump 10, it can simultaneously flow to and be sprayed from multiple oil injection ports 23. Multiple oil injection ports 23 can be respectively configured to correspond to multiple parts requiring lubrication. For example, multiple oil injection ports 23 can be configured one-to-one with multiple parts of a gear structure. Lubricating oil can be sprayed from multiple oil injection ports 23 to lubricate the corresponding parts requiring lubrication, thereby achieving synchronous lubrication of multiple parts requiring lubrication. As an example, there can be multiple oil flow channels 22, each of which can be connected to the oil pump 10. Each oil flow channel 22 can be configured one-to-one with multiple oil injection ports 23, and each oil injection port 23 can be connected to the oil pump 10 through its corresponding oil flow channel 22. When the oil pump 10 pumps the lubricating oil into the oil flow channel 22, the lubricating oil can flow through multiple oil flow channels 22 to the corresponding oil spray port 23, thereby achieving the effect of lubricating oil simultaneously lubricating multiple parts that need lubrication.

[0037] In some embodiments of this utility model, multiple fuel injectors 23 are located at different positions on the outer casing 20.

[0038] Multiple oil injectors 23 can be correspondingly set to multiple parts inside the differential 1 that require lubrication. By setting multiple oil injectors 23 at different positions on the housing 20, it can be ensured that lubricating oil is distributed to all parts inside the differential 1, thereby providing sufficient lubrication to the internal components of the differential 1 and achieving the effect of targeted lubrication of the differential 1. Furthermore, oil injectors 23 at different positions can provide targeted lubrication to different components of the differential 1, optimizing the lubrication effect and reducing friction and wear.

[0039] In some embodiments of this utility model, the cross-sectional area of ​​the plurality of fuel injection ports 23 is the same.

[0040] By setting multiple oil injection ports 23 with the same cross-sectional area, the flow rate of lubricating oil through each injection port 23 can be the same or approximately the same. This allows the lubricating oil to be evenly distributed to all parts inside the differential 1, improving heat exchange and lubrication efficiency. Multiple oil injection ports 23 with the same cross-sectional area simplify the design and manufacturing process of the differential 1. Oil injectors can be installed at the injection ports 23. Because multiple injection ports 23 have the same cross-sectional area, the multiple oil injectors used within the differential 1 are of the same size. This makes it easier to find replacement parts during maintenance and replacement of the oil injectors, thus reducing costs.

[0041] In some embodiments of this utility model, the oil flow channel 22 may include a main flow channel and multiple branch flow channels, the multiple branch flow channels are all connected to the oil pump 10 through the main flow channel, and the multiple branch flow channels are respectively connected to multiple oil injection ports 23.

[0042] The main flow channel is connected to the oil pump 10 and to multiple branch flow channels, which in turn are connected to multiple oil injection ports 23. Lubricating oil can be transported from the oil pump 10 through the main flow channel to the branch flow channels, and then flow through the branch flow channels to the respective oil injection ports 23. As the main channel for lubricating oil delivery, the main flow channel can transport the lubricating oil pumped by the oil pump 10 to the various branch flow channels, reducing the total length of the oil flow channel 22 and improving the efficiency of lubricating oil delivery to the respective oil injection ports 23, thus improving lubrication efficiency. By adjusting the design of the size and shape of the main flow channel and the multiple branch flow channels, the flow characteristics of the lubricating oil, such as flow rate and pressure, can be optimized to adapt to different working conditions and requirements.

[0043] In some embodiments of this utility model, multiple branch channels and multiple fuel injection ports 23 are connected in a one-to-one correspondence.

[0044] There can be multiple branch channels and multiple oil injection ports 23. The multiple branch channels and multiple oil injection ports 23 are connected in a one-to-one correspondence. Each branch channel has an oil injection port 23 connected to it. The lubricating oil in each branch channel can be sprayed out through the corresponding oil injection port 23. The lubricating oil can be sprayed to different parts inside the differential 1 through multiple oil injection ports 23, thereby achieving multi-directional lubrication inside the differential 1, which is beneficial to achieving directional lubrication inside the differential 1.

[0045] In some embodiments of this invention, the cross-sectional areas of the multiple branch channels are the same.

[0046] With multiple branch flow channels having the same cross-sectional area, the lubricating oil can be evenly distributed within each branch flow channel, ensuring that each part of the differential 1 receives an appropriate amount of lubricating oil. This improves the lubrication efficiency of the differential 1. The identical cross-sectional area of ​​each branch flow channel also ensures relatively consistent pressure loss, helping to maintain pressure balance within the oil flow channel 22. This guarantees that the lubricating oil can be evenly distributed to all parts requiring lubrication, reducing the risk of malfunctions within the differential 1 due to insufficient lubrication.

[0047] In some embodiments of this invention, the cross-sectional shapes of the multiple branch channels are the same.

[0048] The fact that multiple branch flow channels have identical cross-sectional shapes, areas, and structures allows for uniform distribution of lubricating oil within them. This promotes even oil distribution and pressure balance, reduces localized overheating and energy loss, and improves heat exchange efficiency and lubrication performance. Furthermore, the identical cross-sectional shapes of the branch flow channels simplify the design and manufacturing process of the lubrication system, thereby increasing the production efficiency of differential 1.

[0049] In some embodiments of this invention, the cross-sectional area of ​​the branch channel gradually decreases along the direction of oil flow within the branch channel.

[0050] Lubricating oil can flow from the main channel into multiple branch channels, and then flow to the corresponding injection port 23 within each branch channel. Along the oil flow direction within the branch channels, the cross-sectional area of ​​the branch channels gradually decreases. As the cross-sectional area decreases, the flow velocity and pressure of the lubricating oil gradually increase, which increases the pressure of the lubricating oil when it is ejected from the injection port 23 and increases the injection distance. This ensures that the lubricating oil can be sprayed to the parts inside the differential 1 that require lubrication, guaranteeing the lubrication effect on the internal components of the differential 1. Furthermore, by setting the cross-sectional area of ​​the branch channels to gradually decrease, the smooth flow of lubricating oil within the branch channels can be ensured, reducing the risk of lubricating oil stagnation within the branch channels and facilitating more efficient delivery of lubricating oil to the components requiring lubrication.

[0051] The vehicle according to a second aspect of the present invention includes the differential 1 described in the above embodiments.

[0052] According to the vehicle of the present application embodiment, the differential 1 of the above embodiment has good lubrication performance, which is beneficial to improving the reliability of the vehicle.

[0053] The differential 1 and other components and operations of the vehicle according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A differential, characterized in that, include: An oil pump (10) and a housing (20) are provided. The oil pump (10) is fixed to the housing (20). The housing (20) defines an installation space (21). An oil flow channel (22) is formed inside the housing (20). An oil nozzle (23) for lubrication is formed on the inner sidewall of the housing (20). The oil flow channel (22) connects the oil pump (10) and the oil nozzle (23). The oil nozzle (23) is connected to the installation space. The oil injection ports (21) are connected; there are multiple oil injection ports (23), and each of the multiple oil injection ports (23) is connected to the oil pump (10) through the oil flow channel (22); the oil flow channel (22) includes: a main flow channel and multiple branch flow channels, each of the multiple branch flow channels is connected to the oil pump (10) through the main flow channel, and each of the multiple branch flow channels is connected to the multiple oil injection ports (23), and the cross-sectional area of ​​the multiple oil injection ports (23) is the same.

2. The differential according to claim 1, characterized in that, The multiple oil injection ports (23) are located at different positions on the outer casing (20).

3. The differential according to claim 1, characterized in that, The multiple branch channels and the multiple fuel injection ports (23) are connected in a one-to-one correspondence.

4. The differential according to claim 1, characterized in that, The cross-sectional areas of the multiple branch channels are the same.

5. The differential according to claim 1, characterized in that, The cross-sectional shapes of the multiple branch channels are identical.

6. The differential according to claim 1, characterized in that, Along the direction of oil flow within the branch channel, the cross-sectional area of ​​the branch channel gradually decreases.

7. A vehicle, characterized in that, Includes the differential (1) according to any one of claims 1-6.

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