An oil seal structure for simultaneously sealing a plurality of media

Abstract

The utility model relates to an oil seal structure for sealing multiple media at the same time, which belongs to the technical field of oil seal structures. The outer side of a metal framework is covered with a rubber body, the rubber body is in interference fit with a shell, a secondary lip is installed on the outer side of the rubber body, the secondary lip is in interference fit with an output shaft, the lip structure of the rubber body is in interference fit with the output shaft, and a spring is installed on the rubber body. The utility model can seal oil, and the secondary lip made of special material has a double protection effect. In addition to preventing oil, the secondary lip made of special material can seal multiple media. The oil seal is simple to manufacture, the mold is a single-lip structure, and the secondary lip is made by bonding. The outer diameter of the oil seal is a rubber structure, which can avoid scratching problems of an oil seal with a metal body. The utility model solves the problem of poor protection effect of the original oil seal structure in different environments.

Description

Technical Field

[0001] This utility model belongs to the field of oil seal structure technology, specifically relating to an oil seal structure that can simultaneously seal multiple media. Background Technology

[0002] Currently, most common oil seal structures on the market can only seal a single medium. When encountering situations requiring simultaneous sealing of multiple media, a combination of multiple single-function oil seals is typically used. However, this approach has several drawbacks. On the one hand, installing multiple oil seals increases the space occupied and structural complexity of the equipment, leading to an increase in overall size and weight, which is detrimental to miniaturization and lightweight design. On the other hand, the combined use of multiple oil seals increases the risk of seal failure; if one oil seal fails, the entire sealing system may fail, affecting the normal operation of the equipment and even causing safety accidents. Furthermore, the procurement and maintenance costs of multiple oil seals are relatively high, increasing the operating costs of the equipment. Summary of the Invention

[0003] The purpose of this invention is to provide an oil seal structure that can simultaneously seal multiple media, thereby solving the problems of existing technologies such as inability to effectively seal multiple media at the same time, complex structure, high cost, and low reliability.

[0004] The technical solution adopted by this utility model is: An oil seal structure that simultaneously seals multiple media includes a rubber body, a metal skeleton, a secondary lip, and a spring; the metal skeleton is covered with a rubber body, the rubber body and the housing form an interference fit, the secondary lip is installed on the outside of the rubber body, the secondary lip and the output shaft form an interference fit, the lip structure of the rubber body and the output shaft form an interference fit, and the spring is installed on the rubber body.

[0005] Furthermore, the main body of the metal frame adopts an L-shaped structure, which is inverted between the housing and the output shaft, and the end near the output shaft is bent inward.

[0006] Furthermore, one end of the secondary lip is bonded to the outer surface of the rubber body, and the other end extends out of the rubber body to form an interference fit with the output shaft.

[0007] Furthermore, the secondary lip is made of thermally composite felt.

[0008] Furthermore, the metal frame adopts ST12 or ZG270-500.

[0009] Compared with the prior art, the present invention has the following advantages: This invention can seal oil while providing double protection through a secondary lip made of a special material. In addition to being oil-proof, the secondary lip, made of a special material, can seal various media (such as water, mud, sand, gas, etc.).

[0010] The oil seal of this invention is simple to manufacture. The mold is a single-lip structure, and the secondary lip is made by bonding.

[0011] The outer diameter of the oil seal of this invention is made of rubber, which can avoid the problem of scratches on oil seals with a metal outer diameter when assembled with the housing.

[0012] This invention solves the problem of poor protective effect of the original oil seal structure under different environments (multiple media). Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an assembly drawing of this utility model; The components are: 1. Rubber body; 2. Metal skeleton; 3. Secondary lip; 4. Lip structure; 5. Spring. Detailed Implementation

[0014] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model will be provided below with reference to the accompanying drawings.

[0015] like Figure 1 , Figure 2 As shown, this utility model provides an oil seal structure that can simultaneously seal multiple media, including a rubber body 1, a metal skeleton 2, a secondary lip 3, and a spring 5; The metal skeleton 2 is covered with a rubber body 1, which forms an interference fit with the shell (interference amount is 0.17-0.35), effectively preventing dust from entering and oil from leaking out of the oil seal. The metal frame 2 is made of high-strength, corrosion-resistant metal materials (such as ST12, ZG270-500, etc.) to provide stable support for the entire oil seal structure.

[0016] The secondary lip 3 is installed on the outside of the rubber body 1. The secondary lip 3 forms an interference fit with the output shaft, which isolates various media from the outside of the oil seal, thereby ensuring the sealing performance of the oil seal. The lip structure 4 of the rubber body 1 forms an interference fit with the output shaft to prevent oil from overflowing from the inside of the oil seal, thereby ensuring the sealing performance of the oil seal. The spring 5 is mounted on the rubber body 1.

[0017] The rubber body 1 and the metal skeleton 2 are vulcanized into one piece using a vulcanization mold, and then the secondary lip 3 made of a special material is bonded together.

[0018] The vulcanizing mold has a single-lip structure.

[0019] like Figure 1 , Figure 2 As shown, the main body of the metal frame 2 adopts an L-shaped structure, which is upside down between the housing and the output shaft. Its vertical end is at the bottom, its horizontal end is at the top, and the end near the output shaft is bent inward.

[0020] like Figure 1 , Figure 2 As shown, one end of the secondary lip 3 is bonded to the outer surface of the rubber body 1, and the other end extends out of the rubber body 1 to form an interference fit with the output shaft.

[0021] like Figure 1 , Figure 2 As shown, the material of the secondary lip 3 is thermal composite felt, which is not only wear-resistant and tear-resistant, but also waterproof, dustproof, breathable, soundproof and heat-insulating.

[0022] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An oil seal structure that simultaneously seals multiple media, characterized in that: It includes a rubber body (1), a metal frame (2), a secondary lip (3) and a spring (5); the metal frame (2) is covered with a rubber body (1), the rubber body (1) and the housing form an interference fit, the secondary lip (3) is installed on the outside of the rubber body (1), the secondary lip (3) and the output shaft form an interference fit, the lip structure (4) of the rubber body (1) and the output shaft form an interference fit, and the spring (5) is installed on the rubber body (1).

2. The oil seal structure for simultaneously sealing multiple media according to claim 1, characterized in that: The main body of the metal frame (2) adopts an L-shaped structure, which is upside down between the housing and the output shaft, and the end near the output shaft is bent inward.

3. The oil seal structure for simultaneously sealing multiple media according to claim 2, characterized in that: One end of the secondary lip (3) is bonded to the outer surface of the rubber body (1), and the other end extends out of the rubber body (1) to form an interference fit with the output shaft.

4. The oil seal structure for simultaneously sealing multiple media according to claim 3, characterized in that: The material of the secondary lip (3) is thermal composite felt.

5. The oil seal structure for simultaneously sealing multiple media according to claim 1, characterized in that: The metal frame (2) is made of ST12 or ZG270-500.

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