Pump body, oil pump, engine and vehicle

Abstract

The utility model belongs to the technical field of vehicles, and discloses a pump body, an oil pump, an engine and a vehicle. An oil way is formed in the pump body, an installation position is arranged outside the pump body, an idle wheel of the oil pump is rotatably connected to the installation position, the idle wheel of the oil pump is rotatably connected to the pump body, a lubricating oil way is further formed in the pump body, and an oil outlet of the lubricating oil way is communicated with the rotating connection position of the idle wheel of the oil pump. The oil way is provided with an expansion part, the expansion part is communicated with an oil inlet of the lubricating oil way, in the gravity direction, the oil outlet is higher than the oil inlet, and the sectional area of the expansion part is larger than that of the oil way located on the upstream of the expansion part. The pump body can prevent impurities from entering the rotating joint of the idle wheel of the oil pump without additionally introducing a filtering piece, the structure of the oil pump is simplified, the reliability of the oil pump is improved, regular cleaning is not needed, and user operation is simplified.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a pump body, an oil pump, an engine, and a vehicle. Background Technology

[0002] An oil pump is a component that establishes engine oil pressure, delivers oil to all moving surfaces of the engine, and ensures continuous oil circulation within the engine. An oil pump mainly consists of a pump body, pump shaft, gears, and idler gears.

[0003] During oil pump operation, the bushing at the pump shaft requires lubrication, hence the existence of a lubrication oil passage, which is generally connected to the dirty oil passage after the pump. When the oil pump is running, engine oil enters the lubrication oil passage from the dirty oil passage. If the engine oil contains a large amount of impurities, these impurities will enter the pump shaft, affecting the relative rotation between the pump shaft and the bushing, and may even scratch or wear the idler wheel bushing, impacting the normal operation of the bushing and bearings, and leading to lubrication failure.

[0004] In the prior art, an additional filter is installed between the rotating connection of the idler wheel and the lubricating oil passage to filter impurities in the lubricating oil, thereby preventing impurities in the oil from causing wear on the rotating part of the idler wheel.

[0005] However, the above-mentioned method for removing impurities from lubricating oil requires an additional filter between the idler wheel's rotating connection and the lubricating oil passage. While this prevents impurities from affecting the idler wheel's lubrication, it adds an extra structure, reduces the reliability of the oil pump, and increases its manufacturing cost. Furthermore, the filter needs to be cleaned regularly, causing inconvenience for users.

[0006] Therefore, there is an urgent need for a pump body, oil pump, engine, and vehicle to solve the above problems. Utility Model Content

[0007] According to one aspect of the present invention, the objective is to provide a pump body that, without the need for additional filters, prevents impurities from entering the rotating connection of the idler wheel of the oil pump, simplifies the oil pump structure, improves the reliability of the oil pump, eliminates the need for regular cleaning, and simplifies user operation.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] The pump body has an oil passage formed inside it, and an installation position is provided on the outside of the pump body. The idler wheel of the oil pump is rotatably connected to the installation position. The pump body also has a lubricating oil passage inside it, and the oil outlet of the lubricating oil passage is connected to the rotatable connection of the idler wheel of the oil pump.

[0010] The oil passage has an expansion section, which is connected to the oil inlet of the lubricating oil passage. In the direction of gravity, the height of the oil outlet is higher than the height of the oil inlet, and the cross-sectional area of ​​the expansion section is larger than the cross-sectional area of ​​the oil passage located upstream of the expansion section.

[0011] As a preferred embodiment of the pump body provided by this utility model, in the direction of gravity, the height of the oil passage is lower than the height of the oil inlet, and the inner wall of the oil passage protrudes upward in the direction of gravity to form an expansion space. The expansion space and a portion of the oil passage corresponding to the expansion space form the expansion section.

[0012] As a preferred embodiment of the pump body provided by this utility model, an arc transition portion is formed between the wall of the expansion space and the inner wall of the oil passage.

[0013] As a preferred embodiment of the pump body provided by this utility model, the inner wall of the expansion space forms an arc-shaped transition section at the corner.

[0014] According to another aspect of the present invention, the objective is to provide an oil pump, the oil pump including an idler wheel and an oil pumping gear set, and further including a pump body as described in any of the above embodiments, wherein an oil passage is formed in the pump body, the oil pumping gear set is disposed in the pump body, and the idler wheel is drivenly connected between the engine gear and the oil pumping gear set.

[0015] The oil pump gear set can rotate under the drive of the engine gear and the transmission of the idler wheel, and the lubricating oil in the oil circuit can flow under the rotation of the oil pump gear set.

[0016] As a preferred embodiment of the oil pump provided by this utility model, the idler wheel includes a wheel body and a pump shaft. The pump shaft is disposed in the wheel body, coaxially disposed with the wheel body, and connected to the pump body by a connecting bolt. The wheel body can rotate relative to the pump shaft. A lubrication gap is formed between the pump shaft and the connecting bolt. The wheel body is meshed with the engine gear, and the oil outlet communicates with the lubrication gap.

[0017] As a preferred embodiment of the oil pump provided by this utility model, the idler wheel further includes a bushing. The bushing is coaxially sleeved outside the pump shaft and sandwiched between the pump shaft and the wheel body. The pump shaft has an oil guide channel that connects to the lubrication gap and extends to the bushing.

[0018] As a preferred embodiment of the oil pump provided by this utility model, the oil pump gear set includes an oil pump driving gear and an oil pump driven gear. The oil pump driving gear is rotatably disposed in the pump body around its own axis and is connected to the idler wheel, and can rotate under the drive of the idler wheel. The oil pump driven gear is rotatably disposed in the oil passage around its own axis and is meshed with the oil pump driving gear. The lubricating oil in the oil passage can flow under the rotation drive of the oil pump driven gear.

[0019] According to another aspect of the present invention, the object is to provide an engine comprising an engine body, an engine gear, and an oil pump as described in any of the above embodiments, wherein the engine gear is connected to the engine body and meshes with the idler gear.

[0020] According to another aspect of the present invention, the object is to provide a vehicle comprising an engine as described above.

[0021] The beneficial effects of this utility model are:

[0022] The pump body provided by this utility model has an oil passage formed therein, and an installation position is provided on the outside of the pump body. The idler wheel of the oil pump is rotatably connected to the installation position. A lubricating oil channel is also formed inside the pump body, and the outlet of the lubricating oil channel is connected to the rotating connection of the idler wheel. That is, through this lubricating oil channel, lubricating oil in the oil passage can be transported to the rotating connection of the idler wheel to provide lubrication for the rotation of the idler wheel. The oil passage has an expansion section connected to the inlet of the lubricating oil channel. In the direction of gravity, the height of the outlet is higher than the height of the inlet, and the cross-sectional area of ​​the expansion section is larger than the cross-sectional area of ​​the oil passage located upstream of the expansion section. Through the expansion section, the flow velocity at the inlet of the lubricating oil channel can be reduced by utilizing the principle of fluid flow, allowing impurities in the lubricating oil to naturally settle under gravity, preventing impurities from entering the lubricating oil channel. In other words, the pump body does not require additional filters, thus preventing impurities from entering the rotating connection of the oil pump's idler wheel. This effectively simplifies the oil pump's structure and improves its reliability. It also eliminates the need for regular cleaning, thereby simplifying user operation.

[0023] The oil pump provided by this utility model, by setting the above-mentioned pump body, can realize the lubrication of the idler wheel rotation, effectively improving reliability and reducing manufacturing costs.

[0024] The engine provided by this utility model, by setting the aforementioned oil pump, can realize the circulation of lubricating oil and can prevent impurities in the lubricating oil from participating in the circulation, thereby improving reliability.

[0025] The vehicle provided by this utility model is equipped with the aforementioned engine, which can improve power performance and reliability. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the oil pump provided in this embodiment of the utility model;

[0028] Figure 2 This is a front view of the pump body arranged in an oil pump according to an embodiment of the present invention;

[0029] Figure 3 yes Figure 2 A magnified view of a section marked A in the middle;

[0030] Figure 4 This is a side view of the pump body arranged in an oil pump according to an embodiment of the present invention;

[0031] Figure 5 yes Figure 4 A magnified view of a section marked B in the middle;

[0032] Figure 6 yes Figure 4 A magnified view of the structure marked C in the middle.

[0033] In the picture:

[0034] 1. Engine gears;

[0035] 10. Pump body; 11. Oil passage; 12. Oil pump inlet; 13. Oil pump outlet;

[0036] 20. Idler wheel; 21. Wheel body; 22. Bushing; 23. Pump shaft; 24. Lubrication clearance; 25. Oil guide channel;

[0037] 30. Pump gear set; 31. Pump drive gear; 32. Pump driven gear;

[0038] 40. Connecting bolts;

[0039] 50. Transmission wheel;

[0040] 100. Lubricating oil passage; 110. Oil outlet; 120. Oil inlet;

[0041] 200. Expanded space; 210. Rounded transition section; 220. Arc-shaped transition section. Detailed Implementation

[0042] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connect," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In this embodiment, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0050] 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.

[0051] Figure 1 This diagram shows the structure of the oil pump provided in an embodiment of the present invention. Figure 2 This is a front view showing the arrangement of the pump body in an oil pump according to an embodiment of the present invention; Figure 4 This is a side view showing the pump body arranged in an oil pump according to an embodiment of the present invention. (Refer to...) Figure 1 , Figure 2 and Figure 4 This embodiment provides a pump body, an oil pump, and an engine.

[0052] The engine includes an engine body, engine gear 1, and an oil pump provided in this embodiment.

[0053] The oil pump includes an idler wheel 20 and an oil pump gear set 30, as well as a pump body 10 as provided in this embodiment. An oil passage 11 is formed within the pump body 10, and a mounting position is provided on the outside of the pump body 10. The oil pump gear set 30 is disposed within the pump body 10. The idler wheel 20 is rotatably connected to the mounting position of the pump body 10 around its own axis and is driven by the engine gear 1 of the engine through meshing transmission, and is also driven by the transmission wheel 50 to the oil pump gear set 30. The oil passage 11 connects to the rotatable connection of the idler wheel 20. The oil pump gear set 30 can rotate under the driving action of the engine gear 1 and the transmission action of the idler wheel 20 and the transmission wheel 50. The lubricating oil in the oil passage 11 can flow under the rotational drive of the oil pump gear set 30 to achieve lubrication of the rotatable connection of the idler wheel 20.

[0054] Specifically, the oil passage 11 is provided with an oil pump inlet 12 and an oil pump outlet 13. The lubricating oil can enter the oil passage 11 through the oil pump inlet 12, and the lubricating oil in the oil passage 11 can flow out through the oil pump outlet 13, such as... Figure 2 As indicated by the dashed arrow, it should be noted that... Figure 2 In the middle, corresponding to the oil outlet 13 of the oil pump, the lubricating oil flows out in a direction perpendicular to the paper and outward.

[0055] More specifically, the oil pump gear set 30 includes an oil pump drive gear 31 and an oil pump driven gear 32. The oil pump drive gear 31 is rotatably disposed in the pump body 10 about its own axis and is driven to the idler gear 20 via a transmission wheel 50, and can rotate under the drive of the idler gear 20 and the transmission wheel 50. The oil pump driven gear 32 is rotatably disposed in the oil passage 11 about its own axis and is meshed with the oil pump drive gear 31. The transmission wheel 50 is located outside the oil passage 11, meshes with the idler gear 20, and is coaxially fixedly connected to the oil pump drive gear 31 disposed in the oil passage 11. The lubricating oil in the oil passage 11 can flow under the rotation of the oil pump driven gear 32. The lubricating oil in the oil passage 11 can also provide lubrication for the rotation of the oil pump driven gear 32 and the oil pump drive gear 31.

[0056] More specifically, refer to Figure 2 There are two driven gears 32 for the oil pump. Both driven gears 32 are located in the oil passage 11 and are respectively arranged on both sides of the driving gear 31 along the diameter direction. The driving gear 31 can drive the driven gears 32 on both sides to rotate, thereby realizing the flow of lubricating oil in the oil passage 11 between the oil pump inlet 12 and the oil pump outlet 13.

[0057] Figure 5 Showing Figure 4 A magnified view of the structure marked B in the middle section. (Refer to...) Figure 4 and Figure 5 The idler wheel 20 includes a wheel body 21 and a pump shaft 23. The pump shaft 23 is disposed inside the wheel body 21, coaxially arranged with the wheel body 21, and connected to the pump body 10 by a connecting bolt 40. The wheel body 21 is rotatable relative to the pump shaft 23, and a lubrication gap 24 is formed between the pump shaft 23 and the connecting bolt 40. The wheel body 21 is meshed with the engine gear 1, and the oil outlet 110 communicates with the lubrication gap 24. That is to say, the wheel body 21 is located outside the oil passage 11, therefore a pump body is required to guide the lubricating oil in the oil passage 11 to the rotating connection of the wheel body 21.

[0058] Specifically, the idler wheel 20 also includes a bushing 22. The bushing 22 is coaxially sleeved around the pump shaft 23 and sandwiched between the pump shaft 23 and the wheel body 21. The pump shaft 23 has an oil guide channel 25, which connects to the lubrication gap 24 and extends to the bushing 22. Through the oil guide channel 25, lubricating oil in the lubrication gap 24 can be guided to the bushing 22, thereby forming lubrication between the bushing 22 and the pump shaft 23.

[0059] Figure 3 Show Figure 2 A magnified view of a section marked A in the middle; Figure 6 Show Figure 4 A magnified view of the structure marked C in the middle. (Refer to...) Figures 2-6 In this embodiment, the pump body 10 has a lubricating oil passage 100, and the oil outlet 110 of the lubricating oil passage 100 is connected to the lubrication gap 24. The oil passage 11 has an expansion portion, which is connected to the oil inlet 120 of the lubricating oil passage 100. The cross-sectional area of ​​the expansion portion is larger than the cross-sectional area of ​​the oil passage 11 located upstream of the expansion portion. In the direction of gravity, the height of the oil outlet 110 is higher than the height of the oil inlet 120. That is to say, through the lubricating oil passage 100, the lubricating oil in the oil passage 11 can be transported to the lubrication gap 24 and the oil guide channel 25 to provide lubrication for the rotation of the wheel body 21.

[0060] By utilizing the aforementioned expansion section and the principle of fluid flow, the flow velocity at the oil inlet 120 of the lubricating oil passage 100 is reduced, allowing impurities in the lubricating oil to naturally settle under gravity, preventing them from entering the lubricating oil passage 100. The settled impurities can be directly discharged through the oil pump outlet 13, eliminating the need for regular cleaning and simplifying user operation. In other words, the pump body does not require an additional filter to prevent impurities from entering the rotating connection of the idler wheel 20 of the oil pump, effectively simplifying the oil pump's structure and improving its reliability.

[0061] More specifically, in the direction of gravity, the height of the oil passage 11 is lower than the height of the oil inlet 120. The inner wall of the oil passage 11 protrudes upward in the direction of gravity to form an expansion space 200. The expansion space 200 and a portion of the oil passage 11 corresponding to the expansion space 200 form the expansion section. The oil inlet 120 is disposed in the expansion space 200. Through the above arrangement, the lubricating oil in the oil passage 11 can overcome gravity and flow to the oil inlet 120 under the action of the pump gear set 30, thus preventing impurities that have settled in the expansion section under gravity from re-entering the oil inlet 120.

[0062] Continue to refer to Figure 3 and Figure 6 The wall of the expansion space 200 and the inner wall of the oil passage 11 form an arc transition portion 210. That is, the bottom side of the expansion space 200 and the top of the oil passage 11 are connected by an arc transition, which facilitates the flow of lubricating oil in the oil passage 11 into the expansion space 200 and avoids the problem of the included angle formed at the junction of the bottom of the expansion space 200 and the inner wall of the oil passage 11 obstructing the flow of lubricating oil.

[0063] Specifically, the inner wall of the expansion space 200 forms an arc-shaped transition section 220 at the corner. This design prevents the accumulation of lubricating oil residue at the corners of the expansion space 200.

[0064] This embodiment also provides a vehicle that includes the engine provided in this embodiment. This improves power performance and reliability.

[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pump body, characterized in that, An oil passage (11) is formed in the pump body, and an installation position is provided on the outside of the pump body. The idler wheel (20) of the oil pump is rotatably connected to the installation position. A lubricating oil passage (100) is also provided inside the pump body. The oil outlet (110) of the lubricating oil passage (100) is connected to the rotatable connection between the idler wheel (20) of the oil pump and the installation position. The oil passage (11) has an expansion section, which is connected to the oil inlet (120) of the lubricating oil passage (100). In the direction of gravity, the height of the oil outlet (110) is higher than the height of the oil inlet (120), and the cross-sectional area of ​​the expansion section is larger than the cross-sectional area of ​​the oil passage (11) located upstream of the expansion section.

2. The pump body according to claim 1, characterized in that, In the direction of gravity, the height of the oil passage (11) is lower than the height of the oil inlet (120), and the inner wall of the oil passage (11) protrudes upward in the direction of gravity to form an expansion space (200). The expansion space (200) and the oil passage (11) form the expansion section corresponding to a portion of the expansion space (200).

3. The pump body according to claim 2, characterized in that, An arc transition section (210) is formed between the wall of the expansion space (200) and the inner wall of the oil passage (11).

4. The pump body according to claim 2, characterized in that, The inner wall of the expanded space (200) forms an arc-shaped transition section (220) at the corner.

5. An oil pump, characterized in that, It includes an idler gear (20) and an oil pump gear set (30), and also includes a pump body as described in any one of claims 1-4, wherein the oil pump gear set (30) is disposed in the pump body, and the idler gear (20) is drivenly connected between the engine gear (1) and the oil pump gear set (30); The oil pump gear set (30) can rotate under the drive of the engine gear (1) and the transmission of the idler wheel (20), and the lubricating oil in the oil circuit (11) can flow under the rotation of the oil pump gear set (30).

6. The oil pump according to claim 5, characterized in that, The idler wheel (20) includes a wheel body (21) and a pump shaft (23). The pump shaft (23) is disposed inside the wheel body (21) and is coaxially disposed with the wheel body (21). It is connected to the pump body by a connecting bolt (40). The wheel body (21) can rotate relative to the pump shaft (23). A lubrication gap (24) is formed between the pump shaft (23) and the connecting bolt (40). The wheel body (21) is meshed with the engine gear (1). The oil outlet (110) is connected to the lubrication gap (24).

7. The oil pump according to claim 6, characterized in that, The idler wheel (20) also includes a bushing (22), which is coaxially sleeved on the outside of the pump shaft (23) and sandwiched between the pump shaft (23) and the wheel body (21). The pump shaft (23) has an oil guide channel (25), which connects to the lubrication gap (24) and extends to the bushing (22).

8. The oil pump according to claim 5, characterized in that, The oil pump gear set (30) includes an oil pump drive gear (31) and an oil pump driven gear (32). The oil pump drive gear (31) is rotatably disposed in the pump body around its own axis and is connected to the idler wheel (20) for transmission. It can rotate under the drive of the idler wheel (20). The oil pump driven gear (32) is rotatably disposed in the oil passage (11) around its own axis and is meshed with the oil pump drive gear (31). The lubricating oil in the oil passage (11) can flow under the rotation drive of the oil pump driven gear (32).

9. An engine, characterized in that, It includes an engine body, an engine gear (1), and an oil pump as described in any one of claims 5-8, wherein the engine gear (1) is connected to the engine body and meshes with the idler gear (20).

10. A vehicle, characterized in that, Including the engine as described in claim 9.

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