One-way valve, lubricating oil duct and oil cooling speed reducer

Abstract

According to the one-way valve, the lubricating oil channel and the oil cooling speed reducer, the one-way valve is arranged in the lubricating oil channel of the speed reducer, lubricating oil can be prevented from flowing in the unnecessary direction, it is ensured that oil liquid is effectively supplied to all lubricating points all the time according to a designed path, and therefore the situation of insufficient lubrication is avoided; by means of the design, the lubrication problem in the prior art is solved, the product development period is effectively shortened, the economic cost is reduced, and powerful support is provided for optimization design of an automobile transmission system. Specifically, in the embodiment, when oil flows down from the upper portion, under the pressure effect, the rotary valve deck is opened, and lubricating oil passes through the rotary valve deck; when the oil flows from bottom to top, the rotary valve cover is blocked by the half baffle, the rotary valve cover is closed, and backflow of the oil is prevented.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a one-way valve, a lubricating oil channel and an oil-cooled reducer. Background Art

[0002] When the reducer adopts a passive lubrication mechanism, a variety of oil receiving and oil guiding structures are carefully designed inside its housing to effectively capture the oil generated by the gear agitation and accurately distribute it to key components such as shaft teeth, bearings and splines for lubrication through oil guide ribs, oil guide plates and oil channel networks. However, in common uphill and downhill driving conditions, the change in the posture of the whole vehicle causes the transmission assembly angle to adjust, which in turn causes a corresponding change in the oil channel angle. This change may cause the actual flow path of the oil in the oil channel to deviate from the original design path, resulting in insufficient lubrication of specific bearing areas, posing a potential threat to bearing performance, assembly safety and reliability.

[0003] To address this problem, the housing structure usually has to be adjusted, the oil channel angle and the position of the oil guide element have to be replanned, and then complex simulations and field tests have to be carried out to verify the improvement effect. This process is not only time-consuming and lengthy, but also comes with high economic costs.

[0004] Automakers tend to apply the same powertrain to different models. However, this strategy also brings new challenges: the difference in assembly layout angles between different models means that lubricating oil channels designed for specific angles may face problems with poor lubricating oil flow when used across models, especially affecting the full lubrication of bearings, reducing overall performance and reliability. If the oil channel design is adjusted separately for each model, it will greatly extend the product design cycle, increase costs, and may delay the product launch (SOP) time, affecting market revenue. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a one-way valve, a lubricating oil channel and an oil-cooled reducer to solve the problem that in the existing reducer, the actual flow path of the oil in the oil channel may deviate from the original design path.

[0006] A one-way valve provided in an embodiment of the present application is arranged in a pipeline, and the one-way valve comprises: an annular structure, a pin shaft, a half baffle plate and a rotating valve cover;

[0007] The outer surface of the annular structure is used to contact the inner wall of the pipeline, and the inner side of the annular structure is provided with a pin shaft, a half baffle plate and a rotary valve cover;

[0008] The ring structure includes an upper ring and a lower ring;

[0009] The two ends of the pin shaft are in contact with the inner wall of the upper ring, and the pin shaft divides the inner surrounding area of ​​the upper ring into a symmetrical first area and a second area; the rotary valve cover is installed in the upper ring through the pin shaft, and the rotary valve cover can rotate around the pin shaft; the size of the rotary valve cover is adapted to the area of ​​the inner surrounding area of ​​the upper ring;

[0010] The half baffle plate contacts the inner wall of the lower ring, and the size of the half baffle plate is adapted to the area of ​​the first region; the half baffle plate is used to prevent the rotary valve cover from rotating when the rotary valve cover is closed.

[0011] In the above technical solution, by setting a one-way valve in the lubricating oil channel of the reducer, the lubricating oil can be prevented from flowing in an unnecessary direction, ensuring that the oil is always effectively supplied to each lubrication point according to the designed path, thereby avoiding the occurrence of insufficient lubrication. This design not only solves the lubrication problem in the prior art, but also effectively shortens the product development cycle, reduces economic costs, and provides strong support for the optimized design of the automobile transmission system. Specifically, in this embodiment, when the oil flows down from above, under the action of pressure, the rotary valve cover opens to allow the lubricating oil to pass; when the oil flows upward from below, the rotary valve cover is blocked by the half baffle, and the rotary valve cover is closed to prevent the oil from flowing back.

[0012] The structural design of the one-way valve can be individually designed according to the cross-sectional area and shape of different pipes. For example, for a square pipe, the one-way valve is also a square structure; for a round pipe, the one-way valve is a round structure. The following embodiment takes the one-way valve applied to a round pipe as an example for illustration:

[0013] In some optional embodiments, the annular structure includes a circular ring structure; the upper ring includes an upper circular ring, and the lower ring includes a lower circular ring.

[0014] In some optional embodiments, the rotary valve cover includes a circular valve cover.

[0015] In some optional embodiments, the half baffle includes a semicircular baffle; the arc side surface of the semicircular baffle contacts the inner wall of the lower ring, and the straight side of the semicircular baffle is parallel to the pin axis.

[0016] In some optional embodiments, a step structure is provided at the end of one side of the straight edge of the semicircular baffle; the step structure is used to limit the opening of the rotary valve cover to be less than or equal to a set angle when the rotary valve cover is opened, wherein the set angle is less than 90 degrees and greater than 0 degrees.

[0017] In the above technical solution, a step structure is provided at the end of the semicircular baffle to prevent the one-way valve from opening too wide when it is opened, which would cause the oil to flow in reverse for too long in the event of reverse flow of the oil. In addition, the step structure design of the semicircular baffle can accurately limit its opening within a set range (less than or equal to a set angle, and the angle is less than 90 degrees and greater than 0 degrees) when the rotary valve cover is opened. This design ensures that the flow rate and speed of the oil passing through the one-way valve can be effectively controlled.

[0018] In some optional embodiments, a sealing ring is also included;

[0019] A groove is arranged on the outer side of the annular structure, and the groove is used for placing a sealing ring.

[0020] In the above technical solution, by providing a groove on the outer side of the annular structure and placing a sealing ring, the sealing performance between the one-way valve and the pipeline can be significantly improved. The sealing ring can fit tightly on the contact surface, effectively preventing the oil from leaking from the gap when it flows at high pressure or high speed, ensuring the normal operation of the lubricating oil channel system and the effective circulation of the oil. The sealing ring is usually made of wear-resistant and corrosion-resistant materials, which can withstand the chemical substances and temperature changes in the oil without aging or damage, reducing the frequency of maintenance and replacement due to seal failure, and reducing the overall operating cost.

[0021] In some optional embodiments, the sealing ring is made of rubber, PTFE or PU.

[0022] A lubricating oil channel provided in an embodiment of the present application includes: a pipeline, and a one-way valve as described in any one of the above items.

[0023] In some optional embodiments, a blocking structure is provided at the outlet of the pipeline, and the blocking structure is used to prevent the one-way valve from sliding out of the pipeline.

[0024] In the above technical solution, due to frequent impact of oil, the one-way valve itself may move up and down in the oil channel, so blocking structures are set at the inlet and outlet of the oil channel to prevent the one-way valve from sliding out after being placed in the oil channel.

[0025] An oil-cooled reducer provided in an embodiment of the present application includes any one of the above lubricating oil channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A cross-sectional view of a one-way valve provided in an embodiment of the present application;

[0028] Figure 2 A structural diagram of a one-way valve provided in an embodiment of the present application;

[0029] Figure 3 A cross-sectional view of a lubricating oil passage provided in an embodiment of the present application;

[0030] Figure 4 A structural diagram of the installation fixture provided in an embodiment of the present application;

[0031] Figure 5 A cross-sectional view of a mounting fixture and a one-way valve provided in an embodiment of the present application;

[0032] Figure 6 This is a structural diagram of the installation fixture and one-way valve provided in an embodiment of the present application.

[0033] Icons: 1-ring structure, 11-upper ring, 12-lower ring, 2-pin shaft, 3-half baffle, 31-step structure, 4-rotating valve cover, 5-sealing ring, 6-check valve, 7-lubricating oil channel, 8-pipeline, 9-outlet, 10-installation fixture. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0035] Please refer to Figure 1 and Figure 2 , Figure 1 A cross-sectional view of a one-way valve 6 provided in an embodiment of the present application, Figure 2 A structural diagram of a one-way valve 6 provided in an embodiment of the present application. The one-way valve 6 is arranged in a pipe 8, and the one-way valve 6 comprises: an annular structure 1, a pin 2, a half baffle 3 and a rotary valve cover 4; the outer surface of the annular structure 1 is used to contact the inner wall of the pipe 8, and the inner side of the annular structure 1 is provided with a pin 2, a half baffle 3 and a rotary valve cover 4; the annular structure 1 comprises an upper ring 11 and a lower ring 12; both ends of the pin 2 contact the inner wall of the upper ring 11, and the pin 2 divides the inner surrounding area of ​​the upper ring 11 into a symmetrical first area and a second area; the rotary valve cover 4 is installed in the upper ring 11 through the pin 2, and the rotary valve cover 4 can rotate around the pin 2; the size of the rotary valve cover 4 is adapted to the area of ​​the inner surrounding area of ​​the upper ring 11; the half baffle 3 contacts the inner wall of the lower ring 12, and the size of the half baffle 3 is adapted to the area of ​​the first area; the half baffle 3 is used to prevent the rotary valve cover 4 from rotating when the rotary valve cover 4 is closed.

[0036] In the above technical solution, by setting the one-way valve 6 in the lubricating oil channel 7 of the reducer, the lubricating oil can be prevented from flowing in an unnecessary direction, ensuring that the oil is always effectively supplied to each lubrication point according to the designed path, thereby avoiding the occurrence of insufficient lubrication. This design not only solves the lubrication problem in the prior art, but also effectively shortens the product development cycle, reduces economic costs, and provides strong support for the optimized design of the automobile transmission system. Specifically, in this embodiment, when the oil flows down from above, under the action of pressure, the rotary valve cover 4 opens to allow the lubricating oil to pass; when the oil flows upward from below, the rotary valve cover 4 is blocked by the half baffle 3, and the rotary valve cover 4 is closed to prevent the oil from flowing back.

[0037] The structural design of the one-way valve 6 can be individually designed according to the cross-sectional area and shape of different pipes 8. For example, for a square pipe 8, the one-way valve 6 is also a square structure; for a round pipe 8, the one-way valve 6 is a round structure. The following embodiment takes the one-way valve 6 applied to the round pipe 8 as an example for illustration:

[0038] In some optional embodiments, the annular structure 1 includes a circular ring structure; the upper ring 11 includes an upper circular ring, and the lower ring 12 includes a lower circular ring.

[0039] In some optional embodiments, the rotary valve cover 4 includes a circular valve cover.

[0040] In some optional embodiments, the half baffle 3 includes a semicircular baffle; the arc side surface of the semicircular baffle contacts the inner wall of the lower ring 12 , and the straight side of the semicircular baffle is parallel to the pin 2 .

[0041] In some optional embodiments, a step structure 31 is provided at the end of one side of the straight edge of the semicircular baffle; the step structure 31 is used to limit the opening of the rotary valve cover 4 to be less than or equal to a set angle when the rotary valve cover 4 is opened, wherein the set angle is less than 90 degrees and greater than 0 degrees.

[0042] In the above technical solution, a step structure 31 is provided at the end of the semicircular baffle to prevent the one-way valve 6 from opening too wide when it is opened, which would cause the oil to flow in reverse for too long in the event of reverse flow of the oil. In addition, the step structure 31 of the semicircular baffle is designed to accurately limit the opening of the rotary valve cover 4 within a set range (less than or equal to a set angle, and the angle is less than 90 degrees and greater than 0 degrees) when the rotary valve cover 4 is opened. This design ensures that the flow rate and speed of the oil when passing through the one-way valve 6 can be effectively controlled.

[0043] In some optional embodiments, a sealing ring 5 is also included;

[0044] A groove is provided on the outer side of the annular structure 1 , and the groove is used to place the sealing ring 5 .

[0045] In the above technical solution, by providing a groove on the outer side of the annular structure 1 and placing a sealing ring 5, the sealing performance between the one-way valve 6 and the pipeline 8 can be significantly improved. The sealing ring 5 can fit tightly on the contact surface, effectively preventing the oil from leaking from the gap when it flows at high pressure or high speed, ensuring the normal operation of the lubricating oil channel 7 system and the effective circulation of the oil. The sealing ring 5 is usually made of wear-resistant and corrosion-resistant materials, which can withstand the chemical substances and temperature changes in the oil without aging or damage, reducing the frequency of maintenance and replacement due to sealing failure, and reducing the overall operating cost.

[0046] In some optional embodiments, the sealing ring 5 is made of rubber, PTFE or PU.

[0047] Among them, polytetrafluoroethylene (PTFE) has excellent chemical corrosion resistance and high temperature resistance, and is suitable for sealing requirements of high temperature, high pressure and highly corrosive media.

[0048] Polyurethane (PU): It has good wear and abrasion resistance and is suitable for high-pressure liquid sealing applications such as hydraulic systems and automotive brake systems.

[0049] Rubber includes the following:

[0050] Natural rubber: It has good cold resistance, resilience and wear resistance, and is suitable for hydraulic brake systems, etc. However, it is not resistant to mineral oil, and the operating temperature range is generally 0-80℃.

[0051] Nitrile rubber (NBR): Widely used in media such as petroleum products, air with oil vapor, vegetable oil and mineral oil, but not suitable for hot water exceeding 65°C or hot dry air exceeding 60°C.

[0052] Fluororubber (FKM or VITON): It has excellent oil resistance, wear resistance and high temperature resistance, can significantly increase the service life, and is suitable for a variety of media such as lubricating oil and hydraulic oil. Its operating temperature range is extremely wide, ranging from -20 to 250°C or higher.

[0053] Silicone rubber (SIL): It has the properties of cold resistance, heat resistance, anti-aging, and strong insulation effect, and is suitable for indoor electrical appliances, such as microwave ovens, water heaters, etc. However, it is not suitable for oils, concentrated acids or concentrated solutions. The operating temperature range of silicone rubber is wide, ranging from -70℃ to 260℃.

[0054] Hydrogenated nitrile rubber (HNBR): It has excellent properties such as corrosion resistance, crack resistance, compression resistance, deformation resistance, and wear resistance, and is suitable for automobile engine systems, washing machinery, etc. However, it is not suitable for lipids, alcohols or aromatic solutions.

[0055] Chloroprene rubber (CR): It has good oil resistance, air impermeability and solvent resistance, as well as excellent weather aging and ozone aging resistance. It is often used in door and window sealing strips and vacuum sealing products.

[0056] Ethylene propylene diene monomer (EPDM): It has excellent weather resistance, ozone resistance, water resistance and chemical resistance. It can be used in bathroom equipment, car radiators and car brake systems, but it is not recommended for food use.

[0057] Please refer to Figure 3 , Figure 3 A cross-sectional view of a lubricating oil passage 7 provided in an embodiment of the present application, the lubricating oil passage 7 comprises: a pipeline 8, and a one-way valve 6 as any one of the above items.

[0058] In some optional embodiments, a blocking structure is provided at the outlet 9 of the pipeline 8 , and the blocking structure is used to prevent the one-way valve 6 from sliding out of the pipeline 8 .

[0059] In the above technical solution, due to frequent impact of oil, the one-way valve 6 itself may move up and down in the oil channel, so blocking structures are set at the oil channel inlet and outlet 9 to prevent the one-way valve 6 from sliding out after being placed in the oil channel.

[0060] An oil-cooled reducer provided in an embodiment of the present application includes any one of the above lubricating oil channels 7 .

[0061] Please refer to Figure 4 , Figure 5 and Figure 6 , Figure 4 This is a structural diagram of the installation fixture 10 provided in an embodiment of the present application. Figure 5 A cross-sectional view of the mounting fixture 10 and the one-way valve 6 provided in the embodiment of the present application, Figure 6 This is a structural diagram of the installation fixture 10 and the one-way valve 6 provided in the embodiment of the present application. This embodiment provides an installation fixture 10 for the one-way valve 6. After opening the blocking structure at the outlet 9 of the pipeline 8, the installation fixture 10 is used to clamp the edge of the one-way valve 6 and put it into the lubricating oil channel 7.

[0062] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0063] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0064] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0065] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0066] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A one-way valve, characterized in that: The one-way valve is arranged in the pipeline, and comprises: an annular structure, a pin shaft, a half baffle and a rotary valve cover; The outer surface of the annular structure is used to contact the inner wall of the pipeline, and the inner side of the annular structure is provided with a pin shaft, a half baffle plate and a rotary valve cover; The annular structure comprises an upper ring and a lower ring; The two ends of the pin shaft are in contact with the inner wall of the upper ring, and the pin shaft divides the inner surrounding area of ​​the upper ring into a first area and a second area that are symmetrical; the rotary valve cover is installed in the upper ring through the pin shaft, and the rotary valve cover can rotate around the pin shaft; the size of the rotary valve cover is adapted to the area of ​​the inner surrounding area of ​​the upper ring; The half baffle plate contacts the inner wall of the lower ring, and the size of the half baffle plate is adapted to the area of ​​the first region; the half baffle plate is used to prevent the rotary valve cover from rotating when the rotary valve cover is closed.

2. The one-way valve according to claim 1, characterized in that: The annular structure includes a circular ring structure; the upper ring includes an upper circular ring, and the lower ring includes a lower circular ring.

3. The one-way valve according to claim 2, characterized in that: The rotary valve cover comprises a circular valve cover.

4. The one-way valve according to claim 3, characterized in that: The half baffle plate comprises a semicircular baffle plate; the arc side surface of the semicircular baffle plate contacts the inner wall of the lower ring, and the straight side of the semicircular baffle plate is parallel to the pin shaft.

5. The one-way valve according to claim 4, characterized in that: A step structure is provided at the end of one side of the straight edge of the semicircular baffle; the step structure is used to limit the opening of the rotary valve cover to be less than or equal to a set angle when the rotary valve cover is opened, wherein the set angle is less than 90 degrees and greater than 0 degrees.

6. The one-way valve according to claim 1, characterized in that: Also includes a sealing ring; A groove is arranged on the outer side of the annular structure, and the groove is used for placing the sealing ring.

7. The one-way valve according to claim 6, characterized in that: The sealing ring is made of rubber, PTFE or PU.

8. A lubricating oil channel, characterized in that: include: A pipeline, and a one-way valve as described in any one of claims 1 to 7.

9. The lubricating oil passage according to claim 8, characterized in that: A blocking structure is provided at the outlet of the pipeline, and the blocking structure is used to prevent the one-way valve from sliding out of the pipeline.

10. An oil-cooled reducer, characterized in that: Comprising a lubricating oil passage as claimed in claim 8 or 9.

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