Special-shaped sealing ring for automobile oil pump

Abstract

The utility model discloses a special-shaped sealing ring for an automobile oil pump, which relates to the technical field of sealing rings and comprises a shell, a sealing ring body, an upper cover and a boss convenient for fixing the sealing ring body, the sealing ring body comprises a lower end face and an upper end face, the boss is connected with the lower end face, the shell is arranged below the sealing ring body, and the upper cover is arranged below the shell. And a groove is formed in the top end of the shell, and an upper cover is arranged above the sealing ring body. According to the special-shaped sealing ring, the circle of boss is designed on the lower end face of the sealing ring body, the width of the boss is smaller than that of the inner space of the groove, the sealing ring body can be fixed in the groove more easily, and it is guaranteed that after a cylinder body is assembled, the special-shaped sealing ring does not shift or deform in a gap between an oil pump and a plunger.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, specifically a special-shaped sealing ring for automotive oil pumps. Background Technology

[0002] The primary function of the shaped seals inside an automotive fuel pump is to prevent fuel leakage. They also help reduce wear and improve the stability of the hydraulic system. Specifically, by tightly fitting against mating surfaces, the shaped seals ensure that fuel pumps do not leak from the inlet / outlet, or from the gap between the injector and cylinder, thus guaranteeing the normal operation of the hydraulic system. Furthermore, the shaped seals reduce wear on the injector / cylinder and inlet / outlet components, extending the fuel pump's lifespan. In the fuel system, fuel pump seals and high-pressure fuel pump shaped seals are crucial components. They are typically made of fuel-resistant, high-temperature-resistant, and wear-resistant rubber materials, effectively preventing fuel leakage and ensuring normal engine operation. If these shaped seals shift or deform within the gap between the fuel pump and injector, they are prone to wear or damage, potentially leading to reduced engine power, increased fuel consumption, and engine vibration. Utility Model Content

[0003] The purpose of this invention is to provide a special-shaped sealing ring for automotive oil pumps to solve the problems of displacement and deformation of the sealing components mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a special-shaped sealing ring for an automotive oil pump, comprising a housing, a sealing ring body, and a top cover, and further comprising a boss for facilitating the fixing of the sealing ring body;

[0005] The sealing ring body includes a lower end face and an upper end face, and the boss is connected to the lower end face;

[0006] A housing is provided below the sealing ring, and a groove is provided inside the top of the housing. A top cover is provided above the sealing ring.

[0007] Preferably, the sealing ring body matches the groove, and both the sealing ring body and the boss can be inserted into the interior of the groove.

[0008] Preferably, the sealing ring body and the boss are made of hydrogenated nitrile rubber.

[0009] Preferably, the width of the boss is smaller than the width of the sealing ring body, and the boss is flush with the outer side of the sealing ring body.

[0010] Preferably, both the sealing ring and the boss are semi-circular arc-shaped.

[0011] Preferably, the shape of the top cover matches that of the sealing ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the sealing ring body is semi-circular arc-shaped, with a raised platform design along the lower end face. The semi-circular arc shape fits the curved surface of the groove, resulting in a large contact area. The raised platform is embedded in the groove, which acts like a buckle to restrict the displacement of the sealing ring body in the groove. From the perspective of force and stability, the raised platform is squeezed during assembly, generating a reverse force, which enhances the friction and clamping force between the sealing ring body and the groove, disperses the influence of external forces on the sealing ring body, and ensures that the irregularly shaped sealing ring does not shift or deform in the gap between the oil pump and the injection plug after the cylinder body is assembled.

[0013] The sealing ring body is made of hydrogenated nitrile rubber with high hardness and good resistance to high and low temperatures. The resulting special-shaped sealing ring for oil pumps is fuel-resistant, high-temperature resistant, wear-resistant, and has good sealing performance.

[0014] Hydrogenated nitrile butadiene rubber has excellent resistance to high and low temperatures and weathering. After vulcanization and molding, the product is automatically demolded and the flash falls off automatically. After inspection, it can be packaged and stored. It has the advantages of short production cycle and high production capacity, and has a broad market prospect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram showing the assembly and disassembly of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the sealing ring body of this utility model;

[0017] Figure 3 This is a bottom view of the sealing ring body of this utility model;

[0018] Figure 4 This is a schematic diagram of the front sectional view of the sealing ring body of this utility model;

[0019] Figure 5 This is a front sectional view of the assembled structure of this utility model.

[0020] In the diagram: 1. Shell; 2. Groove; 3. Sealing ring; 31. Lower end face; 32. Upper end face; 4. Top cover; 5. Boss. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: Please refer to Figure 1-5A special-shaped sealing ring for an automotive oil pump includes a housing 1, a sealing ring body 3 and a top cover 4, and also includes a boss 5 for fixing the sealing ring body 3.

[0023] The sealing ring body 3 includes a lower end face 31 and an upper end face 32, and the boss 5 is connected to the lower end face 31.

[0024] A housing 1 is provided below the sealing ring body 3, and a groove 2 is provided inside the top of the housing 1. A top cover 4 is provided above the sealing ring body 3, and the shape of the top cover 4 matches that of the sealing ring body 3.

[0025] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, during use, the sealing ring body 3 matches the groove 2. Both the sealing ring body 3 and the boss 5 can be inserted into the interior of the groove 2. The width of the boss 5 is smaller than the width of the sealing ring body 3, and the outer sides of the boss 5 and the sealing ring body 3 are flush. During use, the design of the boss makes it easier to fix the oil pump's irregular sealing ring into the sealing groove, ensuring that the irregular sealing ring does not shift or deform in the gap between the oil pump and the injection plug after the cylinder body is assembled. It also helps to reduce wear and improve the stability of the hydraulic system.

[0026] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when in use, the sealing ring body 3 and the boss 5 are made of hydrogenated nitrile rubber. The sealing ring body 3 and the boss 5 are both semi-circular arc-shaped. When in use, the irregular sealing ring is made of hydrogenated nitrile rubber, which has excellent high and low temperature resistance and weather resistance.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A special-shaped sealing ring for an automobile oil pump, comprising a shell (1), a sealing ring body (3) and an upper cover (4), characterized in that: It also includes a boss (5) to facilitate the fixing of the sealing ring body (3); The sealing ring body (3) includes a lower end face (31) and an upper end face (32), and the boss (5) is connected to the lower end face (31).

2. The special-shaped sealing ring for an automobile oil pump according to claim 1, characterized in that: A housing (1) is provided below the sealing ring body (3), and a groove (2) is provided inside the top of the housing (1). A top cover (4) is provided above the sealing ring body (3).

3. The special-shaped sealing ring for an automobile oil pump according to claim 1, characterized in that: The sealing ring (3) matches the groove (2), and both the sealing ring (3) and the boss (5) can be inserted into the interior of the groove (2).

4. The special-shaped sealing ring for an automobile oil pump according to claim 1, characterized in that: The sealing ring (3) and the boss (5) are made of hydrogenated nitrile rubber.

5. The special-shaped sealing ring for an automobile oil pump according to claim 1, characterized in that: The width of the boss (5) is smaller than the width of the sealing ring body (3), and the outer sides of the boss (5) and the sealing ring body (3) are flush with each other.

6. The special-shaped sealing ring for an automobile oil pump according to claim 1, characterized in that: Both the sealing ring (3) and the boss (5) are semi-circular arc-shaped.

7. The special-shaped sealing ring for automobile oil pump according to claim 1, characterized in that: The shape of the top cover (4) matches that of the sealing ring (3).

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