Oil return pipe assembly, supercharger and engine
By designing a rotatable return pipe assembly and extruded sealing surface, the assembly difficulties and torsional assembly stress problems caused by welding connection of the return pipe to the flange are solved, and lower assembly difficulty and higher sealing performance are achieved.
Patent Information
- Application Number
- CN202420658021.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-03-29
AI Technical Summary
In the prior art, welding connection of the return oil pipe to the flange leads to assembly difficulties and torsional assembly stress, increasing the risk of fracture.
A return pipe assembly is designed in which a seal between the flange and the return pipe is achieved by a rotatable design and extrusion sealing surface to reduce assembly stress.
It effectively reduces assembly difficulty, reduces torsional assembly stress, and reduces the risk of return oil pipe breakage.
Smart Images
Figure CN222513525U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, in particular to an oil return pipe component, a supercharger and an engine. Background Art
[0002] At present, in order to realize the installation of the oil return pipe 30 and the supercharger 10, a flange 20 is usually provided on the oil return pipe 30, and the flange 20 and the oil return pipe 30 are usually fixed by welding, such as Figure 1 and Figure 2 As shown, the welding connection method is difficult to assemble and is prone to assembly stress. In addition, the flange 20 and the oil return pipe 30 are welded together. Due to manufacturing tolerances and assembly errors, the bolt holes of the flange 20 of the oil return pipe 30 may not correspond well to the supercharger 10 during installation, resulting in torsional assembly stress in the oil return pipe 30 during assembly, which accelerates the risk of breakage of the oil return pipe 30.
[0003] Therefore, how to reduce the difficulty of assembly becomes a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content
[0004] The utility model provides an oil return pipe component, a supercharger and an engine, which have low assembly difficulty.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] In a first aspect, the utility model provides an oil return pipe assembly, comprising a flange and an oil return pipe:
[0007] The flange comprises a flange body, a mounting hole and a sealing hole, wherein the mounting hole penetrates the flange body in the axial direction, the sealing hole is located at one end of the mounting hole, and a first sealing surface is formed at a portion where the sealing hole and the mounting hole are connected;
[0008] The oil return pipe includes an oil return pipe body and a head end. The oil return pipe body can be rotatably arranged in the mounting hole. The head end is located in the sealing hole and is higher than the sealing hole. A second sealing surface matching the first sealing surface is arranged at the position of the head end opposite to the first sealing surface. The second sealing surface and the first sealing surface can achieve sealing matching through extrusion.
[0009] In some embodiments, the first sealing surface is a conical surface.
[0010] In some embodiments, the second sealing surface is a conical surface.
[0011] In some embodiments, the head end includes a first sealing portion, which is connected to the oil return pipe body and is arranged to be tapered in a direction approaching the oil return pipe body.
[0012] In some embodiments, the head end further includes a second sealing portion, which is connected to the first sealing portion and is gradually arranged in a direction close to the oil return pipe body, and part or all of the second sealing portion is exposed from the sealing hole.
[0013] In some embodiments, the first sealing portion and the second sealing portion are made of elastic material and deform in the axial direction when squeezed.
[0014] In some embodiments, a supercharger is provided, comprising a supercharger body and an oil return pipe assembly as described above, wherein the oil return pipe assembly is installed at an oil return port of the supercharger body through a flange.
[0015] In some embodiments, a mounting plate is provided at the oil return port, and the flange is mounted on the mounting plate by fastening bolts.
[0016] In some embodiments, the mounting plate is provided with a first fastening hole, and the flange is provided with a second fastening hole at a position opposite to the first fastening hole, and there are at least two first fastening holes and second fastening holes.
[0017] In some embodiments, an engine is provided, comprising any of the superchargers described above.
[0018] It can be seen from the above technical solution that in the oil return pipe assembly of the embodiment of the utility model, the oil return pipe body can rotate relative to the flange, and the sealing between the two is achieved by squeezing between the first sealing surface and the second sealing surface. During the assembly process of the oil return pipe assembly, the assembly stress can be effectively eliminated, thereby reducing the assembly difficulty. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the utility model can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.
[0020] Figure 1 A stereoscopic diagram of a supercharger and an oil return pipe assembled together provided by the prior art;
[0021] Figure 2 A cross-sectional view of the oil return pipe and flange provided by the prior art;
[0022] Figure 3 A cross-sectional view of an assembly process of an oil return pipe assembly provided by an embodiment of the utility model;
[0023] Figure 4 A cross-sectional view of an oil return pipe assembly provided by an embodiment of the utility model after being assembled;
[0024] Figure 5 for Figure 4 A magnified view of part A;
[0025] Figure 6 A cross-sectional view of the oil return pipe assembly provided by the embodiment of the utility model installed in a supercharger;
[0026] Figure 7 for Figure 6 A magnified view of part B;
[0027] In the figure, 10-supercharger, 20-flange, 30-return oil pipe, 40-gasket;
[0028] 11-mounting plate, 21-flange body, 22-mounting hole, 23-sealing hole, 231-first sealing surface; 31-oil return pipe body, 32-head end, 321-first sealing part, 321a-second sealing surface, 322-second sealing part. DETAILED DESCRIPTION
[0029] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. The described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0030] As can be seen from the background technology description, since the oil return pipe 30 and the flange 20 are welded together, the welding connection method is difficult to assemble and is prone to assembly stress, which is a technical problem that needs to be solved. In addition, since there is a tolerance between the oil return pipe 30 and the flange 20, when the oil return pipe 30 is assembled to the supercharger 10, it is difficult for the oil return pipe 30 to be aligned with the supercharger 10, resulting in torsional assembly stress in the oil return pipe 30 during assembly, which accelerates the risk of breakage of the oil return pipe 30, which is another technical problem that needs to be solved.
[0031] After the flange 20 is installed on the supercharger 10, a gasket 40 needs to be arranged between the flange 20 and the supercharger 10. Due to the presence of the gasket 40, there are two sealing surfaces on both sides of the gasket 40, which doubles the risk of oil leakage, and is also prone to wrong installation and missing installation, and increases the assembly links; the commonly used gasket 40 is limited in structure. After the gasket 40 is tightened by the bolts, the gasket 40 has a small rebound ability, poor vibration resistance, and poor sealing durability, resulting in poor reliability and robustness. Figure 1 and Figure 2shown.
[0032] To solve the problem of difficult assembly, see Figures 3 to 5 The embodiment discloses an oil return pipe assembly. The oil return pipe assembly shown in the figure includes a flange 20 and an oil return pipe 30: the flange 20 includes a flange body 21, a mounting hole 22 and a sealing hole 23, the mounting hole 22 axially penetrates the flange body 21, the sealing hole 23 is located at one end of the mounting hole 22, and a first sealing surface 231 is formed at a portion where the sealing hole 23 and the mounting hole 22 are connected; the oil return pipe 30 includes an oil return pipe body 31 and a head end 32, the oil return pipe body 31 is rotatably arranged in the mounting hole 22, the head end 32 is located in the sealing hole 23 and is higher than the sealing hole 23, and a second sealing surface 321a matching the first sealing surface 231 is arranged at a portion of the head end 32 opposite to the first sealing surface 231, and the second sealing surface 321a and the first sealing surface 231 can be sealed by extrusion.
[0033] In the oil return pipe assembly of the embodiment of the utility model, the oil return pipe body 31 is rotatable relative to the flange 20, and the sealing between the two is achieved by squeezing between the first sealing surface 231 and the second sealing surface 321a. During the assembly process of the oil return pipe assembly, the assembly stress can be effectively eliminated, thereby reducing the assembly difficulty.
[0034] In addition, when the oil return pipe assembly is assembled, the oil return pipe body 31 can be rotated relative to the flange 20. By rotating the oil return pipe body 31, the oil return pipe assembly can be assembled to the supercharger 10 without twisting, thereby reducing the torsional assembly stress and the risk of breakage of the oil return pipe 30.
[0035] The oil return pipe body 31 can rotate relative to the flange 20 by a preset angle, wherein the preset angle may include 90°, 180°, 270° or 360°. Of course, the preset angle may also be other angles, which will not be described in detail here.
[0036] The sealing form between the first sealing surface 231 and the second sealing surface 321a can be a face-to-face sealing, a line-to-face sealing or other sealing forms. In some examples, the first sealing surface 231 is a plane, an arc surface or a conical surface. In some examples, the second sealing surface 321a is a plane, an arc surface or a conical surface. Preferably, both the first sealing surface 231 and the second sealing surface 321a are conical surfaces, and a face-to-face contact sealing form is adopted. In addition, when the conical surface and the conical surface are matched, when the head end 32 is squeezed, the contact between the first sealing surface 231 and the second sealing surface 321a will be closer, thereby further improving the sealing performance.
[0037] The second sealing surface 321a may be formed by the head end 32 protruding from the circumference of the oil return pipe body 31. In some examples, the head end 32 includes a first sealing portion 321, which is connected to the oil return pipe body 31 and is arranged to be gradually contracted in a direction close to the oil return pipe body 31.
[0038] The above embodiments are mainly described on the basis that the oil return pipe 30 has the function of rotation to ensure the sealing performance between the oil return pipe body 31 and the flange 20. In order to improve the sealing performance between the oil return pipe body 31 and the supercharger 10, the utility model can also be improved by improving the sealing performance between the oil return pipe 30 and the supercharger 10.
[0039] In some examples, the head end 32 also includes a second sealing portion 322, which is connected to the first sealing portion 321 and is gradually arranged in a direction close to the oil return pipe body 31, and the second sealing portion 322 partially or completely exposes the sealing hole 23. When the oil return pipe assembly is installed on the oil return port of the supercharger 10, the second sealing portion 322 abuts against the oil return port, thereby ensuring the sealing performance here. In addition, the second sealing portion 322 is gradually arranged in a direction away from the supercharger 10, which can instantly reduce the pressure between the second sealing portion 322 and the oil return port, and also improve the sealing performance here to a certain extent.
[0040] The head end 32 and the oil return pipe body 31 are an integrated structure or a split structure, wherein, in order to further improve the sealing performance between the head end 32 and the flange 20 and the supercharger 10, the first sealing portion 321 and the second sealing portion 322 are made of elastic material, and deform in the axial direction when squeezed, and return to the original state when the squeezing is removed.
[0041] See also Figure 6 and Figure 7 The supercharger 10 shown in the figure includes a supercharger 10 body and an oil return pipe assembly as described above, and the oil return pipe assembly is installed at the oil return port of the supercharger 10 body through a flange 20. Since the above oil return pipe assembly has the above effects, the supercharger 10 including the oil return pipe assembly has corresponding effects, which will not be described in detail here.
[0042] It should be noted that the flange 20 may be connected to the main body of the supercharger 10 via threads or fasteners. In order to reduce the difficulty of mold opening, in some examples, the flange 20 is connected to the main body of the supercharger 10 via fasteners.
[0043] The oil return port is provided with a mounting plate 11, and the flange 20 is mounted on the mounting plate 11 by fastening bolts. The flange 20 of the oil return pipe assembly can be mounted on the mounting plate 11 by fastening bolts.
[0044] The mounting plate 11 is provided with a first fastening hole, and the flange 20 is provided with a second fastening hole at a position opposite to the first fastening hole. There are at least two first fastening holes and second fastening holes. Of course, for the convenience of adjustment, the number of first fastening holes can also be more than the number of second fastening holes.
[0045] The utility model provides an engine, comprising any one of the above-mentioned superchargers 10. Since the above-mentioned supercharger 10 has the above-mentioned beneficial effects, the engine comprising the supercharger 10 also has corresponding effects, which will not be described in detail here.
[0046] In the above, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
[0047] The above description is only a preferred embodiment of the utility model and an explanation of the technical principles used, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. The scope of the utility model involved in the utility model is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but also should cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the concept of the above-mentioned utility model. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the utility model (but not limited to) to form a technical solution.
Claims
1. An oil return pipe assembly, characterized in that: Including flange and return pipe: The flange comprises a flange body, a mounting hole and a sealing hole, wherein the mounting hole penetrates the flange body in the axial direction, the sealing hole is located at one end of the mounting hole, and a first sealing surface is formed at a portion where the sealing hole and the mounting hole are connected; The oil return pipe includes an oil return pipe body and a head end. The oil return pipe body can be rotatably arranged in the mounting hole. The head end is located in the sealing hole and is higher than the sealing hole. A second sealing surface that matches the first sealing surface is arranged at a portion of the head end opposite to the first sealing surface. The second sealing surface and the first sealing surface can achieve sealing cooperation through extrusion.
2. The oil return pipe assembly according to claim 1, characterized in that: The first sealing surface is a conical surface.
3. The oil return pipe assembly according to claim 2, characterized in that: The second sealing surface is a conical surface.
4. The oil return pipe assembly according to claim 2, characterized in that: The head end includes a first sealing portion, which is connected to the oil return pipe body and is arranged to be gradually contracted in a direction close to the oil return pipe body.
5. The oil return pipe assembly according to claim 4, characterized in that: The head end further includes a second sealing portion, which is connected to the first sealing portion and is gradually arranged in a direction close to the oil return pipe body, and a part or all of the second sealing portion is exposed from the sealing hole.
6. The oil return pipe assembly according to claim 5, characterized in that: The first sealing portion and the second sealing portion are made of elastic material and deform in the axial direction when squeezed.
7. A supercharger, characterized in that: The invention comprises a supercharger body and an oil return pipe assembly according to any one of claims 1 to 5, wherein the oil return pipe assembly is installed at the oil return port of the supercharger body through a flange.
8. The supercharger according to claim 7, characterized in that A mounting plate is provided at the oil return port, and the flange is mounted on the mounting plate by fastening bolts.
9. The supercharger according to claim 8, characterized in that The mounting plate is provided with a first fastening hole, and the flange is provided with a second fastening hole at a position opposite to the first fastening hole. There are at least two first fastening holes and two second fastening holes.
10. An engine, characterized in that: Comprising a supercharger as claimed in any one of claims 6 to 9.