Subway oil seal with high sealing performance

Abstract

The utility model relates to subway oil seal technical field, and disclose a subway oil seal of high sealing property, including oil seal rubber, the inside of oil seal rubber is provided with metal framework, one side of oil seal rubber is provided with dustproof lip, the other side of oil seal rubber is provided with sealing lip, be provided with flexure between dustproof lip and sealing lip, be provided with spring groove on oil seal rubber, be provided with spring in the groove of spring groove, be provided with spring lip guard on one side of spring of oil seal rubber, be provided with trimming surface between spring lip guard and sealing lip, one side of oil seal rubber is provided with front chamfer, the other side of oil seal rubber is provided with rear chamfer, the side wall of oil seal rubber is provided with heat dissipation fin, the utility model discloses heat dissipation fin is seted up on the side wall of oil seal rubber, can heat dissipation quickly through heat dissipation fin in subway oil seal work, is favorable for prolonging the life.

Description

Technical Field

[0001] This utility model relates to the field of subway oil seal technology, specifically a high-sealing subway oil seal. Background Technology

[0002] Oil seal is a common term for general sealing components; simply put, it's a seal for lubricating oil. It's a mechanical component used to seal grease (oil is the most common liquid substance in transmission systems, and also refers to any liquid substance in general). It isolates the lubricated parts from the output parts in the transmission system, preventing lubricating oil leakage. Subway oil seals are oil seals used in subway systems.

[0003] Existing subway oil seals cannot dissipate heat quickly during operation, which is detrimental to extending their service life. Furthermore, their single-layer sealing structure results in weak sealing performance. Therefore, there is an urgent need for a high-sealing subway oil seal to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-sealing subway oil seal to solve the problems mentioned in the background art, such as the inability of the existing subway oil seal to dissipate heat quickly during operation, which is not conducive to extending the service life of the oil seal, and the single-layer sealing structure, which makes the sealing performance of the subway oil seal weak.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-sealing subway oil seal includes an oil seal rubber with a metal skeleton inside. A dustproof lip is provided on one side of the oil seal rubber, and a sealing lip is provided on the other side. A curved portion is provided between the dustproof lip and the sealing lip. A spring groove is provided on the oil seal rubber, and a spring is installed within the groove. A spring guard lip is provided on the oil seal rubber and located on one side of the spring. A trimmed surface is provided between the spring guard lip and the sealing lip. A front chamfer is provided on one side of the oil seal rubber, and a rear chamfer is provided on the other side. Heat dissipation fins are provided on one side wall of the oil seal rubber.

[0007] As a preferred embodiment of this utility model, the spring groove is semi-circular in shape.

[0008] In a preferred embodiment of this invention, the heat dissipation fins and the oil seal rubber are connected by fasteners.

[0009] In a preferred embodiment of this invention, the size of the front chamfer is smaller than the size of the rear chamfer.

[0010] As a preferred embodiment of this invention, the top horizontal height of the spring lip is greater than the horizontal height at the center of the spring.

[0011] As a preferred embodiment of this invention, the bottom of the sealing lip and the bottom of the dustproof lip are on the same horizontal line.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model has heat dissipation fins on one side wall of the oil seal rubber. The heat dissipation fins can quickly dissipate heat when the subway oil seal is working, which helps to extend its service life.

[0014] 2. This utility model improves the sealing performance of the subway oil seal by setting a sealing lip and a dustproof lip, and through this double sealing structure. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0018] In the diagram: 1. Oil seal rubber; 2. Metal skeleton; 3. Dustproof lip; 4. Spring groove; 5. Spring; 6. Spring lip protector; 7. Trimmed surface; 8. Front chamfer; 9. Back chamfer; 10. Heat dissipation fins; 11. Sealing lip; 12. Curved section. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. In the embodiments of the present utility model, the different types of cross-sectional lines are not labeled according to national standards, nor do they specify material requirements for the components; they are used to distinguish the cross-sectional views of the components in the drawings.

[0020] Please see Figure 1-2A high-sealing subway oil seal includes an oil seal rubber 1, with a metal skeleton 2 inside the oil seal rubber 1. A dustproof lip 3 is provided on one side of the oil seal rubber 1, and a sealing lip 11 is provided on the other side of the oil seal rubber 1. A curved part 12 is provided between the dustproof lip 3 and the sealing lip 11. A spring groove 4 is provided on the oil seal rubber 1, and a spring 5 is provided in the groove of the spring groove 4. A spring guard lip 6 is provided on the oil seal rubber 1 and on one side of the spring 5. A trimmed surface 7 is provided between the spring guard lip 6 and the sealing lip 11. A front chamfer 8 is provided on one side of the oil seal rubber 1, and a rear chamfer 9 is provided on the other side of the oil seal rubber 1. A heat dissipation fin 10 is provided on one side wall of the oil seal rubber 1.

[0021] The spring groove 4 has a semi-circular shape.

[0022] The heat dissipation fins 10 and the oil seal rubber 1 are connected by fasteners.

[0023] The size of the front chamfer 8 is smaller than the size of the rear chamfer 9.

[0024] Among them, the top horizontal height of the spring lip protector 6 is greater than the center horizontal height of the spring 5.

[0025] The bottom of the sealing lip 11 is on the same horizontal line as the bottom of the dustproof lip 3.

[0026] The working principle and usage process of this utility model are as follows: First, heat dissipation fins 10 are provided on one side wall of the oil seal rubber 1. The heat dissipation fins 10 can quickly dissipate heat when the subway oil seal is working, which is beneficial to extending the service life. By setting a sealing lip 11 and a dustproof lip 3, the sealing performance of the subway oil seal can be improved through this double sealing structure. The contents not described in detail in this description belong to the prior art known to those skilled in the art.

[0027] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A high-sealing subway oil seal, comprising oil seal rubber (1), characterized in that: The oil seal rubber (1) has a metal skeleton (2) inside. A dustproof lip (3) is provided on one side of the oil seal rubber (1), and a sealing lip (11) is provided on the other side of the oil seal rubber (1). A curved part (12) is provided between the dustproof lip (3) and the sealing lip (11). A spring groove (4) is provided on the oil seal rubber (1). A spring (5) is provided in the groove of the spring groove (4). A spring guard lip (6) is provided on the oil seal rubber (1) and on one side of the spring (5). A trimmed surface (7) is provided between the spring guard lip (6) and the sealing lip (11). A front chamfer (8) is provided on one side of the oil seal rubber (1), and a rear chamfer (9) is provided on the other side of the oil seal rubber (1). A heat dissipation fin (10) is provided on one side wall of the oil seal rubber (1).

2. The high-sealing-performance subway oil seal according to claim 1, characterized in that: The spring groove (4) has a semi-circular shape.

3. The high-sealing-performance subway oil seal according to claim 1, characterized in that: The heat dissipation fins (10) and the oil seal rubber (1) are connected by fasteners.

4. A high-sealing subway oil seal according to claim 1, characterized in that: The size of the front chamfer (8) is smaller than the size of the back chamfer (9).

5. A high-sealing subway oil seal according to claim 1, characterized in that: The top horizontal height of the spring lip protector (6) is greater than the horizontal height of the center of the spring (5).

6. A high-sealing subway oil seal according to claim 1, characterized in that: The bottom of the sealing lip (11) is on the same horizontal line as the bottom of the dustproof lip (3).

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