Oil pan assembly, engine and vehicle
By adopting a large pitch thread design in the oil pan assembly, the problem of the traditional oil pan drain screw plug needs to be removed multiple rotations, achieving efficient and safe operation and stronger sealing, simplifying the daily maintenance process .
Patent Information
- Application Number
- CN202420033023.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-01-04
Smart Images
Figure CN222363036U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, in particular to an oil pan assembly, an engine and a vehicle. Background Art
[0002] With the development of industry, engines have been widely used as a power source in various fields. In order to ensure the normal operation of the engine, the engine oil needs to be replaced regularly. This requires frequent removal of the oil pan drain plug to discharge the old engine oil.
[0003] Traditional engine oil pan drain plugs mainly use a combination of an external hexagonal plug and an axial seal ring. This design requires multiple rotations during installation and removal, resulting in inefficient assembly. In addition, a large torque needs to be applied to ensure good sealing. Such a design may cause oil contamination and low work efficiency during maintenance. Utility Model Content
[0004] The purpose of the utility model is to at least solve the problem that the drain plug needs to be rotated multiple times when it is removed. This purpose is achieved through the following technical solutions:
[0005] The first aspect of the utility model provides an oil pan assembly, comprising:
[0006] An oil pan body, wherein the oil pan body is provided with an oil drain plug hole, and a guide boss is provided on the inner wall along the circumference of the oil drain plug hole;
[0007] An oil drain plug seat, the oil drain plug seat is connected to the oil pan body and one end of the oil drain plug seat is connected to the oil drain plug hole;
[0008] An oil drain plug body, which includes a first portion, a second portion and a third portion in sequence along the axial direction of the oil drain plug body, wherein the first portion is provided with a threaded guide rail that is threadably matched with the guide boss, and a pitch of the threaded guide rail is greater than or equal to one half of the length of the first portion along the axial direction thereof;
[0009] The oil drain plug body has a blocking state and an oil drain state. In the blocking state, the oil drain plug hole is closed by the oil drain plug body. In the oil drain state, the oil in the oil pan body can be drained through the oil drain plug hole.
[0010] According to the oil pan assembly of the utility model, the threaded guide rail and the guide boss cooperate, and the threaded guide rail adopts a large pitch thread, so that when installing or removing the drain plug body, the tightening or unscrewing process can be completed by rotating at most half a turn. That is, due to the large thread interval of the threaded guide rail, the drain plug body can move a larger distance each time when rotating, which means that only a small amount of rotation (for example, less than 180°) is required to complete the installation or removal of the drain plug body, greatly shortening the operation time. More importantly, the operator no longer needs to rely on specific tools and can simply achieve it through manual operation. This not only improves work efficiency, but also reduces the potential risk of damage caused by improper use of tools. In addition, the design of the large pitch thread has another advantage that cannot be ignored. Due to its larger contact surface, it can provide a stronger load-bearing capacity under the same conditions compared with traditional threads. This means that in some cases, the drain plug body can be more closely combined with the oil pan body, thereby more effectively preventing leakage. Therefore, the design of the large pitch thread not only makes the tightening and removal of the drain plug body easier and more efficient, but also improves its bonding strength and sealing, bringing obvious convenience and practicality to daily maintenance and operation.
[0011] In addition, the oil pan assembly according to the utility model may also have the following additional technical features:
[0012] In some embodiments of the utility model, along the axial direction of the oil drain plug seat, the oil drain plug seat includes a first sealing portion, an oil drain hole, and a second sealing portion in sequence, and the oil drain hole is opened at the bottom of the circumference of the oil drain plug seat;
[0013] A sealing structure is provided on the circumference of the second portion;
[0014] In the blocking state, the first part passes through the drain plug hole and the first part is completely received in the oil pan body, and the sealing structure is in sealing cooperation with the first sealing part;
[0015] In the oil draining state, a portion of the first portion is accommodated in the oil pan body, another portion of the first portion is accommodated in the oil drain plug body, and the sealing structure is sealed in cooperation with the second sealing portion.
[0016] In some embodiments of the present utility model, the third part includes a limiting truncated cone and a handle, one side of the limiting truncated cone is connected to the second part, and the other side of the limiting truncated cone is connected to the handle.
[0017] In some embodiments of the utility model, a limiting groove is provided at the other end of the oil drain plug seat. In the blocked state, the limiting groove and the limiting cone cooperate to limit the axial stroke of the oil drain plug body in the oil drain plug hole.
[0018] In some embodiments of the present invention, a first anti-loosening platform is provided in the circumference of the limiting groove, and the third portion is provided with a second anti-loosening platform capable of abutting against the first anti-loosening platform.
[0019] In some embodiments of the utility model, the threaded guide rail is accommodated in one end of the oil pan body and is provided with an anti-slip portion, and the anti-slip portion can cooperate with the oil drain plug hole to limit the axial stroke of the oil drain plug body in the oil drain plug hole.
[0020] In some embodiments of the present invention, a weight-reducing groove is provided on the circumferential outer wall of the second portion.
[0021] In some embodiments of the utility model, the threaded guide rail is accommodated in one end of the oil drain plug seat and is provided with a tightening limit groove, and the tightening limit groove can cooperate with the oil drain plug hole to limit the circumferential travel of the oil drain plug body in the oil drain plug hole.
[0022] The second aspect of the utility model provides an engine, comprising:
[0023] As for the above-mentioned oil pan assembly, the oil pan assembly is arranged at the bottom of the cylinder body.
[0024] A third aspect of the utility model provides a vehicle, comprising the above-mentioned engine. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:
[0026] Figure 1 The exploded structure diagram of the oil pan assembly according to the embodiment of the utility model is schematically shown;
[0027] Figure 2 A partial structural cross-sectional view of an oil pan assembly according to an embodiment of the utility model is schematically shown (the drain plug body is not shown);
[0028] Figure 3 A partial structural cross-sectional view of an oil pan assembly according to an embodiment of the utility model is schematically shown (showing the oil drain plug body in a sealed state);
[0029] Figure 4Schematically shows a partial structural cross-sectional view of an oil pan assembly according to an embodiment of the utility model (showing the drain plug body and in the oil draining state)
[0030] Figure 5 The schematic diagram of the structure of the oil drain plug body according to the embodiment of the utility model is schematically shown.
[0031] The reference numerals are as follows:
[0032] 100. Oil pan assembly;
[0033] 10. Oil pan body; 11. Oil drain plug hole; 111. Guide boss;
[0034] 20. Oil drain plug seat; 21. First sealing portion; 22. Oil drain hole; 23. Second sealing portion; 24. Position limiting groove; 25. First anti-loosening platform;
[0035] 30. Oil drain plug body; 301. First part; 302. Second part; 303. Third part; 31. Threaded guide rail; 311. Anti-slip part; 312. Tightening limit groove; 32. Sealing groove; 33. Weight reduction groove; 34. Limiting round platform; 35. Second anti-loosening platform; 36. Handle; 361. Handle pit;
[0036] 40. Sealing structure. DETAILED DESCRIPTION
[0037] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0038] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.
[0039] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.
[0040] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.
[0041] like Figures 1 to 5As shown, according to an embodiment of the utility model, an oil pan assembly 100 is proposed, including an oil pan body 10, a drain plug seat 20 and an oil drain plug body 30, a drain plug hole 11 is opened at the bottom of the oil pan body 10, a guide boss 111 is provided on the circumferential inner wall of the drain plug hole 11, and one end of the drain plug seat 20 is connected to the drain plug hole 11. Along the axial direction of the drain plug body 30, the drain plug body 30 includes a first portion 301, a second portion 302 and a third portion 303 in sequence. The first portion 301 is provided with a threaded guide rail 31 threadedly matched with the guide boss 111, and the pitch of the threaded guide rail 31 is greater than or equal to one-half of the length of the first portion 301 along its axial direction. The drain plug body 30 has a blocking state and an oil drain state. When the drain plug body is in the blocking state, the drain plug hole 11 is closed by the drain plug body 30. At this time, the first portion 301 passes through the drain plug hole 11, and the first portion 301 is completely accommodated in the oil pan body 10, the second portion 302 is accommodated in the drain plug seat 20, and the third portion 303 is arranged outside the drain plug seat 20. When the drain plug body 30 is in the oil drain state, the engine oil in the oil pan body 10 can be discharged through the drain plug hole 11.
[0042] Traditional thread designs usually require multiple turns to tighten or remove the drain plug. This not only consumes more time and energy, but also may cause more wear due to repeated rotation, shortening the service life of the thread. In addition, because multiple turns are required, the use of specific tools (such as air wrenches or electric wrenches) is almost necessary, which also increases the complexity of the assembly process.
[0043] The design of the large pitch thread proposed in this embodiment provides a simple and effective solution to this problem. Due to the large thread spacing, the drain plug body 30 can move a larger distance each time when rotating. This means that only a small amount of rotation (for example, less than 180°) is required to complete the installation or removal of the drain plug body 30, greatly shortening the operation time. More importantly, the operator no longer needs to rely on specific tools and can simply achieve it through manual operation. This not only improves work efficiency, but also reduces the potential risk of damage caused by improper use of tools.
[0044] The design of the large pitch thread has another advantage that cannot be ignored: due to its larger contact surface, it can provide a stronger load-bearing capacity under the same conditions compared with traditional threads. This means that in some cases, the drain plug body 30 can be more tightly combined with the oil pan, thereby more effectively preventing leakage. Therefore, through the design of the large pitch thread, not only does it make the tightening and removal of the drain plug body 30 easier and more efficient, but it also improves its bonding strength and sealing, bringing obvious convenience and practicality to daily maintenance and operation.
[0045] It is understandable that, because the pitch of the threaded guide rail 31 is greater than or equal to half of the length of the first portion 301 along its axial direction, the post-tightening disassembly process can be completed by rotating at most 180°.
[0046] In some embodiments, along the axial direction of the drain plug seat 20, the drain plug seat 20 includes a first sealing portion 21, a drain hole 22, and a second sealing portion 23 in sequence. The drain hole 22 is opened at the bottom of the drain plug seat 20 in the circumferential direction, and a sealing structure 40 is provided in the circumferential direction of one end of the second portion 302 connected to the first portion 301. When the drain plug body 30 is in a blocked state, the first portion 301 passes through the drain plug hole 11, and the first portion 301 is completely accommodated in the oil pan body 10, and the sealing structure 40 is sealed with the first sealing portion 21. When the oil pan assembly 100 is in an oil draining state, a portion of the first portion 301 is accommodated in the oil pan body 10, and another portion of the first portion 301 is accommodated in the drain plug body 30, and the sealing structure 40 is sealed with the second sealing portion 23. When the drain plug body 30 is in the blocking state, the drain plug body 30 completely blocks the drain plug hole 11, and the oil in the oil pan body 10 cannot flow out. When the drain plug body 30 is in the drain state, the drain plug body 30 does not block the drain plug hole 11, and the oil flows out of the drain plug hole 11 along the threaded guide rail 31 to the drain hole 22. The design of the drain hole 22 of the drain plug seat 20 reduces the risk of oil splashing, better protects operators and reduces environmental pollution.
[0047] Specifically, the oil drain hole 22 extends outward in a truncated cone shape. Such a position design can ensure that the oil can be drained smoothly and completely during oil draining, reducing the amount of residual oil. Its extension in a truncated cone shape, combined with the principles of fluid mechanics, can reduce the vortex generated during oil flow, making the oil flow smoother. In addition, the edge of the oil drain hole 22 is specially processed with a curvature to avoid possible damage to maintenance personnel caused by sharp edges, while also reducing the splashing caused by excessive oil flow during the oil draining process.
[0048] It can be understood that the sealing structure 40 is a sealing ring, and a sealing groove 32 is provided on the circumference of one end of the second portion 302 of the drain plug body 30 connected to the first portion 301, and the sealing ring is received in the sealing groove 32. In the embodiment, the sealing ring is installed in the sealing groove 32 of the drain plug body 30 and is closely fitted with the first sealing portion 21 or the second sealing portion 23 of the drain plug seat 20, so as to achieve an efficient sealing effect.
[0049] Specifically, the sealing ring is made of special rubber or synthetic material that is oil-resistant, temperature-resistant, and wear-resistant, has good resilience, can be continuously sealed, and is not prone to aging. The sealing groove 32 is designed as a groove of a specific shape on the drain plug body 30 for placing and fixing the sealing ring. Its size and shape match the sealing ring to ensure that the sealing ring will not shift during operation. The first sealing portion 21 or the second sealing portion 23 on the drain plug seat 20 is a smooth, hardened surface area that directly contacts the sealing ring to form a tight sealing fit.
[0050] The specific working principle is that when the drain plug body 30 is screwed into the drain plug seat 20, the sealing ring pre-installed in the sealing groove 32 of the drain plug body 30 will be in close contact with the first sealing part 21 or the second sealing part 23 of the drain plug seat 20. Since the material of the sealing ring has a certain elasticity, it will generate a reaction force when compressed, and this reaction force forms a tight fit between the sealing ring and the sealing part. This tight fit prevents the leakage of liquid or gas between the drain plug body 30 and the drain plug seat 20, thereby achieving effective radial sealing. This radial sealing design provides a simple, efficient and reliable sealing solution for the oil pan assembly 100, greatly improving the service life and stability of the oil pan assembly 100.
[0051] It is understandable that the third part 303 includes a limiting truncated cone 34 and a handle 36, one side of the limiting truncated cone 34 is connected to the second part 302, and the other side of the limiting truncated cone 34 is connected to the handle 36. The limiting truncated cone 34 can be stuck at one end of the drain plug seat 20 to prevent the third part 303 from entering the drain plug seat 20. The handle 36 can be easily grasped by the operator, thereby improving the user experience.
[0052] Specifically, the handle 36 is also provided with a handle pit 361. The handle pits 361 on both sides of the handle 36 are designed to fit the hand shape of most users, so that the operator's fingers can be naturally embedded therein. Such a design allows the user to hold the drain plug body 30 more stably when tightening or loosening it, reducing the risk of misoperation caused by unstable grip. The human-machine friendly pit design reduces hand fatigue caused by long-term grip. This allows the operator to maintain high operating efficiency even during long-term work. Due to the humanized design of the handle 36, the operator can easily tighten or loosen the drain plug body 30 without using any special tools. In addition, the design of the spiral plug guide with a large pitch allows only a certain angle (less than 180°) to be rotated when tightening or loosening, greatly improving work efficiency. This design is particularly suitable for occasions where frequent draining or sealing operations are required. Secondly, the design of the handle 36 allows the user to clearly perceive the rotation state and position of the drain plug body 30 during operation, thereby avoiding possible damage caused by excessive tightening or loosening. Finally, when the drain plug body 30 is rotated to the correct position, the handle recess 361 provides physical tactile feedback, so that the operator can immediately know that the drain plug body 30 has been rotated to the correct position, thereby avoiding damage to parts that may be caused by excessive torque. Therefore, the design of the handle 36 focuses on the user's operating experience, safety and work efficiency. Through a simple but practical design idea, this technology successfully solves many problems in the operation of traditional drain plugs and provides a more convenient, safe and humane operation method.
[0053] It can be understood that a limiting groove 24 is provided at the end of the drain plug seat 20 that is not connected to the oil pan body 10. In the sealed state, the limiting groove 24 cooperates with the limiting cone 34 to limit the axial travel of the drain plug body 30 in the drain plug hole 11. Part of the drain plug body 30 can be accommodated in the drain plug seat 20 to prevent the third part 303 of the drain plug body 30 from being completely exposed and occupying space.
[0054] It is understandable that a first anti-loosening platform 25 is provided in the circumference of the limiting groove 24, and a second anti-loosening platform 35 capable of abutting against the first anti-loosening platform 25 is provided on the third part 303. Specifically, there can be two first anti-loosening platforms 25, which are symmetrically arranged along the axial direction of the drain plug seat 20, and then the number of the second anti-loosening platforms 35 used to abut against the first anti-loosening platform 25 is also two. When the drain plug body 30 is loosened to a certain angle, the first anti-loosening platform 25 abuts against the second anti-loosening platform 35 to form a physical barrier to prevent the drain plug body 30 from being excessively loosened or completely falling off, thereby ensuring the safety of the operation. Secondly, during the draining process, the cooperation of the first anti-loosening platform 25 and the second anti-loosening platform 35 can ensure that the drain plug body 30 always remains in a stable position, so that the flow direction of the engine oil can be predicted, thereby reducing the risk of splashing and ensuring the cleanliness of the working environment. Finally, when the drain plug body 30 is loosened to the position where the first anti-loosening platform 25 and the second anti-loosening platform 35 abut, the operator can feel an obvious physical resistance. This feedback allows the operator to clearly know that the drain plug body 30 has been loosened to the appropriate position, thereby preventing over-loosening.
[0055] In some embodiments, an anti-slip portion 311 is provided at one end of the threaded guide rail 31 received in the oil pan body 10. During the oil draining operation, the drain plug body 30 may accidentally fall off due to improper operation or other external factors. The sudden fall-off of the drain plug body 30 may cause the oil to suddenly splash everywhere, posing a safety threat to the operator. The anti-slip portion 311 can effectively prevent this situation and ensure that the drain plug body 30 always remains in place during operation. Specifically, the anti-slip portion 311 can be a portion protruding from one end of the threaded guide rail 31, which cannot pass through the drain plug hole 11.
[0056] In some embodiments, a weight-reducing groove 33 is provided on the circumferential outer wall of the second portion 302. The weight-reducing groove 33 can reduce the weight of the oil drain plug body 30, making it easier for the operator to use.
[0057] In some embodiments, a tightening limit groove 312 is provided at one end of the threaded guide rail 31 received in the drain plug seat 20. Specifically, the tightening limit groove 312 can be a groove-shaped structure at the other end of the threaded guide rail 31, and the tightening limit groove 312 provides a clear, preset stop point, thereby ensuring that the drain plug body 30 will not be over-tightened or cause other potential problems when tightened to the appropriate position.
[0058] This embodiment also provides an engine, including:
[0059] Cylinder block;
[0060] A piston, wherein the piston is disposed in the cylinder body;
[0061] A cylinder head, the cylinder head being arranged on the top of the cylinder body;
[0062] As in the above-mentioned oil pan assembly, the oil pan is arranged at the bottom of the cylinder block.
[0063] This embodiment also provides a vehicle, comprising the above-mentioned engine.
[0064] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. An oil pan assembly, characterized in that: include: An oil pan body, wherein the oil pan body is provided with an oil drain plug hole, and a guide boss is provided on the inner wall along the circumference of the oil drain plug hole; An oil drain plug seat, the oil drain plug seat is connected to the oil pan body and one end of the oil drain plug seat is connected to the oil drain plug hole; An oil drain plug body, which includes a first portion, a second portion and a third portion in sequence along the axial direction of the oil drain plug body, wherein the first portion is provided with a threaded guide rail that is threadably matched with the guide boss, and a pitch of the threaded guide rail is greater than or equal to one half of the length of the first portion along the axial direction thereof; The oil drain plug body has a blocking state and an oil drain state. In the blocking state, the oil drain plug hole is closed by the oil drain plug body. In the oil drain state, the oil in the oil pan body can be drained through the oil drain plug hole.
2. The oil pan assembly according to claim 1, characterized in that: Along the axial direction of the oil drain plug seat, the oil drain plug seat comprises a first sealing portion, an oil drain hole and a second sealing portion in sequence, and the oil drain hole is opened at the bottom of the circumferential direction of the oil drain plug seat; A sealing structure is provided on the circumference of the second portion; In the blocking state, the first part passes through the drain plug hole and the first part is completely received in the oil pan body, and the sealing structure is in sealing cooperation with the first sealing part; In the oil draining state, a portion of the first portion is accommodated in the oil pan body, another portion of the first portion is accommodated in the oil drain plug body, and the sealing structure is sealed in cooperation with the second sealing portion.
3. The oil sump assembly according to claim 2, characterized in that: The third part includes a limiting truncated cone and a handle, one side of the limiting truncated cone is connected to the second part, and the other side of the limiting truncated cone is connected to the handle.
4. The oil pan assembly according to claim 3, characterized in that: The other end of the drain plug seat is provided with a limiting groove. In the blocked state, the limiting groove cooperates with the limiting cone to limit the axial stroke of the drain plug body in the drain plug hole.
5. The oil sump assembly according to claim 4, characterized in that: A first anti-loosening platform is provided in the circumference of the limiting groove, and a second anti-loosening platform capable of abutting against the first anti-loosening platform is provided in the third portion.
6. The oil sump assembly according to any one of claims 1 to 5, characterized in that: One end of the threaded guide rail housed in the oil pan body is provided with an anti-slip portion, and the anti-slip portion can cooperate with the oil drain plug hole to limit the axial stroke of the oil drain plug body in the oil drain plug hole.
7. The oil sump assembly according to any one of claims 1 to 5, characterized in that: A weight-reducing groove is provided on the circumferential outer wall of the second portion.
8. The oil sump assembly according to any one of claims 1 to 5, characterized in that: One end of the threaded guide rail received in the drain plug seat is provided with a tightening limit groove, and the tightening limit groove can cooperate with the drain plug hole to limit the travel of the drain plug body in the circumferential direction of the drain plug hole.
9. An engine, characterized in that: include: Cylinder block; A piston, wherein the piston is disposed in the cylinder body; A cylinder head, the cylinder head being arranged on the top of the cylinder body; The oil sump assembly according to any one of claims 1 to 8, wherein the oil sump assembly is arranged at the bottom of the cylinder block.
10. A vehicle, characterized in that: Comprising the engine as claimed in claim 9.