A skeleton oil seal structure

Abstract

This utility model relates to a skeleton oil seal structure, comprising rubber, a hollow cylindrical body of rubber, an opening at one end of the rubber being a lip, and a skeleton inside the other end of the rubber. A spring is fitted around the outside of the skeleton and the rubber, with the spring positioned between the skeleton and the lip. The spring and the skeleton are located on the same cylindrical surface. This utility model reduces the difference between the inner and outer diameters of the skeleton oil seal by placing the metal skeleton and the spring on the same cylindrical surface. Compared to traditional skeleton oil seals, with the same inner diameter, the outer diameter is reduced, thus reducing the installation space requirement of the skeleton oil seal, increasing its application range, and simultaneously reducing the space occupied by its mating parts, facilitating the design of its mating parts.

Description

Technical Field

[0001] This utility model relates to the field of oil seal technology, and in particular to a skeleton oil seal structure. Background Technology

[0002] The skeleton oil seal is a typical example of an oil seal, and the term "oil seal" generally refers to the skeleton oil seal. The function of an oil seal is typically to isolate the lubricated components in a transmission system from the external environment, preventing lubricant leakage. The skeleton acts like the reinforcing steel in a concrete structure, providing reinforcement and maintaining the seal's shape and tension.

[0003] like Figure 1 As shown, existing skeleton oil seals overlap the skeleton and spring on two different cylindrical surfaces, resulting in a large difference between their inner and outer diameters and a larger outer diameter. This means the skeleton oil seal requires a significant amount of installation space. Furthermore, when assembled onto a shaft of the same size, the fastener that mates with its outer diameter needs a large inner hole, requiring sufficient space for the fastener. This large space requirement for the fastener may leave insufficient room for the design of other components. However, in many designs, it is impossible to provide enough space for the fastener, thus limiting the application range of skeleton oil seals. Utility Model Content

[0004] To address the issue of the large outer diameter of existing skeleton oil seals, a skeleton oil seal structure is proposed.

[0005] The technical solution of this utility model is as follows: a skeleton oil seal structure, including rubber, a hollow cylindrical body of rubber, an opening at one end of the rubber as a lip, a skeleton inside the other end of the rubber, a spring sleeved on the outside of the skeleton and the rubber, the spring being located between the skeleton and the lip, the spring and the skeleton being located on the same cylindrical surface, and the end of the skeleton near the spring being bent inward.

[0006] The beneficial effects of this utility model are as follows: By placing the metal skeleton of the skeleton oil seal and the spring on the same cylindrical surface, this utility model reduces the difference between the inner and outer diameters of the skeleton oil seal. Compared with the old-style skeleton oil seal, the outer diameter is reduced for the same inner diameter, which reduces the installation space requirement of the skeleton oil seal, increases the application range of the skeleton oil seal, and at the same time reduces the space occupied by its mating parts, making it easier to design its mating parts. Attached Figure Description

[0007] Figure 1 This is a cross-sectional view of a skeleton oil seal from the prior art;

[0008] Figure 2 This is a cross-sectional view of the skeleton oil seal structure of this utility model.

[0009] The component names corresponding to the various reference numerals in the diagram are as follows:

[0010] 1. Rubber; 2. Skeleton; 3. Spring; 4. Lip. Detailed Implementation

[0011] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0012] refer to Figure 1 As shown, the existing skeleton oil seal structure bends the skeleton 2 into a right angle, creating a hollow area between the spring 3 and the skeleton 2. The hollow design between the spring 3 and the skeleton 2 is to allow the lip 4 and the spring 3 to be stretched by the shaft after a shaft-like part is inserted into the lip 4. At the same time, in order to have a better oil blocking effect, the outer diameter of the shaft is designed to be larger than the outer diameter of the skeleton oil seal lip. This space is reserved for the lip 4 and the spring 3 to be stretched by the shaft, ensuring that the lip 4 and the spring 3 will not be squeezed and undergo irreversible deformation after being stretched, thus affecting the oil blocking effect.

[0013] refer to Figure 2 As shown in the figure, this application discloses a skeleton oil seal structure, including a rubber 1, a hollow cylinder of the rubber 1, an opening at one end of the rubber 1 as a lip 4, a skeleton 2 inside the other end of the rubber 1, and a spring 3 sleeved on the outside of the rubber 1. The spring 3 is located between the skeleton 2 and the lip 4, and the spring 3 and the skeleton 2 are located on the surface of the same cylinder.

[0014] The end of the frame 2 near the spring 3 is bent inward.

[0015] This invention places the frame 2 and the spring 3 on the same cylindrical surface. The frame 2 only needs to be bent inward at a small angle, making the diameter of the outermost cylindrical surface on one side of the frame 2 larger than the outer diameter of the spring 3. This provides space for the lip 4 and the spring 3 to be supported by the shaft. The reduced bending angle also makes the frame oil seal easier to process. Figure 1 Compared to: reduced Figure 1 The space occupied by the outer frame 2 and rubber 1 shown can ensure the effectiveness of use while reducing the space required.

[0016] The beneficial effects are as follows: By placing the metal skeleton 2 and the spring 3 of the skeleton oil seal on the same cylindrical surface, the difference between the inner and outer diameters of the skeleton oil seal is reduced. Compared with the old skeleton oil seal, the outer diameter is reduced for the same inner diameter, which reduces the installation space requirement of the skeleton oil seal, increases the application range of the skeleton oil seal, and reduces the space occupied by its mating parts, making it easier to design its mating parts.

[0017] It should be noted that the terms "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and 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. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. "A plurality of" means two or more. "Installed," "connected," and "joined" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection.

[0018] The above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the protection scope of this utility model. Any modifications, alterations, and equivalent changes made by those skilled in the art without departing from the spirit and scope of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this utility model are still within the scope of the technical solution of this utility model.

Claims

1. A skeleton oil seal structure characterized by, It include rubber (1), rubber (1) hollow cylinder, rubber (1) one end of the opening is lip (4), rubber (1) the other end is provided with the framework (2) inside, framework (2), rubber (1) outside is provided with spring (3), spring (3) is located between framework (2) and lip (4), the spring (3) with framework (2) are located on the surface of the same cylinder, the framework (2) is bent inward near the one end of spring (3).

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