Rubber oil seal with self-lubricating function

Abstract

The utility model discloses a rubber oil seal with a self-lubricating function, which relates to the technical field of rubber oil seals and comprises an oil seal main body, a lubricating seal strip is fixed on the top surface of the oil seal main body, a lubricating cavity is arranged in the lubricating seal strip, and a guide groove is arranged on the inner wall of the lubricating seal strip on the inner side of the lubricating cavity. A plurality of oil outlets are formed in the side wall of the guide groove at equal intervals, the oil outlets are all connected with the interior of the lubricating cavity in a penetrating mode, an oil guide pipe is fixed to the portion, on the outer side of the lubricating cavity, of the lubricating sealing strip in a penetrating mode, and a one-way valve is arranged on the oil guide pipe. And under the flow guide effect of the guide groove, the lubricating oil is in full contact with the outer surface of the force output component, so that the lubricating effect is achieved, the problem that when an existing rubber oil seal is used, the lubricating oil cannot be in full contact with the outer surface of the force output component and the inner wall of the oil seal is solved, and abrasion of the oil seal in the using process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of rubber oil seal technology, and in particular to a rubber oil seal with self-lubricating function. Background Technology

[0002] Rubber oil seals are sealing components for lubricating oil. They are mechanical elements used to seal grease, isolating lubricated parts in transmission components from output parts to prevent lubricating oil leakage. Oil seals are needed in any part of the moving parts that contains liquid lubricating oil and is connected to the outside. Therefore, oil seals are widely used in various mechanical equipment. When using rubber oil seals, a certain degree of lubrication is required between the inner side of the seal and the output parts to reduce the friction between the seal and the parts, thereby reducing wear on the seal.

[0003] However, in the existing technology, oil seals are mostly lubricated by external dripping or smearing. However, because the connection between the oil seal and the output component is relatively tight, external dripping cannot ensure that the lubricating oil makes full contact between the outer surface of the output component and the inner wall of the oil seal, resulting in poor lubrication effect. This leads to greater wear on the oil seal during use and affects its service life. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the lubricating oil in existing rubber oil seals cannot make sufficient contact between the outer surface of the output component and the inner wall of the oil seal during use, and to propose a rubber oil seal with self-lubricating function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: It includes an oil seal body, a lubricating seal strip fixed to the top surface of the oil seal body, and a lubricating cavity formed inside the lubricating seal strip. A guide groove is formed on the inner wall of the lubricating seal strip inside the lubricating cavity. Several oil outlets are equidistantly formed on the side wall of the guide groove, and all oil outlets are connected to the inside of the lubricating cavity. An oil guide pipe is fixedly connected through the lubricating seal strip outside the lubricating cavity, and a one-way valve is provided on the oil guide pipe. The end of the oil guide pipe away from the oil seal body is connected through to the bottom of an oil storage pipe, and an inlet pipe is fixedly connected through the top surface of the oil storage pipe. A sealing cap is threaded onto the inlet pipe.

[0006] Preferably, the outer edges of both the upper and lower ends of the oil seal body are provided with sealing positioning grooves, and the thickness of the lubricating seal is equal to the thickness between the side wall of the sealing positioning groove and the inner side wall of the oil seal body.

[0007] Preferably, the lubricating seal, lubricating cavity, and guide groove are arranged in annular shape to cooperate with the oil seal body, and the inner wall of the lubricating seal on the outer side of the lubricating cavity is provided with an inlet to cooperate with the oil guide pipe.

[0008] Preferably, a booster pipe is fixedly connected to the top of the oil guide pipe between the one-way valve and the lubrication seal, and a booster piston is slidably arranged inside the booster pipe. A servo cylinder is arranged on the top surface of the booster pipe, and the output rod of the servo cylinder slides through the top of the booster pipe and is fixed on the top surface of the booster piston.

[0009] Preferably, the bottom of the oil storage tube is tapered with the tip pointing towards the oil guide tube, and the oil guide tube is L-shaped to cooperate with the oil storage tube and the lubrication cavity.

[0010] Preferably, the top surface of the oil guide pipe below the booster pipe has an opening that mates with the booster pipe, the diameter of the booster piston is larger than the diameter of the opening, and the inner diameter of the booster pipe is larger than the inner diameter of the oil guide pipe.

[0011] Preferably, the thickness of the guide groove is less than the thickness of the lubrication seal inside the lubrication cavity, and all guide grooves are connected to the inside of the lubrication cavity through oil outlets. Each oil outlet has a filter screen fixed inside that is flush with the side wall of the guide groove.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, through a self-lubricating structure, lubricating oil is introduced into the lubricating cavity inside the lubricating seal, and under the guiding action of the guide groove, the lubricating oil is made to fully contact the outer surface of the output component, thereby playing a lubricating role. This solves the problem that the lubricating oil of the existing rubber oil seal cannot fully contact the outer surface of the output component and the inner wall of the oil seal during use, thus reducing the wear of the oil seal during use.

[0014] 2. In this utility model, through the pressurization structure, the lubricating oil can be pushed to fully contact the output component by pressurization during use. With the help of the guide groove, the lubricating oil can surround the outer surface of the output component, thereby ensuring that the lubricating oil and the output component can quickly and fully contact each other. This ensures that the rubber oil seal can meet its own lubrication effect and improves the service life of the oil seal. Attached Figure Description

[0015] Figure 1 A front view of the three-dimensional structure of the rubber oil seal proposed in this utility model;

[0016] Figure 2 A bottom view of the three-dimensional structure of the rubber oil seal proposed in this utility model;

[0017] Figure 3 This invention presents a partial cross-sectional left view of the three-dimensional structure of a rubber oil seal.

[0018] Figure 4 The diagram shows a partial cross-sectional view (right side) of the three-dimensional structure of the rubber oil seal proposed in this utility model.

[0019] Legend: 1. Oil seal body; 2. Lubrication seal; 3. Sealing positioning groove; 4. Lubrication chamber; 5. Oil guide pipe; 6. One-way valve; 7. Oil storage pipe; 8. Liquid inlet pipe; 9. Sealing cover; 10. Pressure boosting pipe; 11. Servo cylinder; 12. Oil outlet; 13. Guide groove; 14. Filter screen; 15. Pressure boosting piston. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1

[0023] like Figure 1-4 As shown, this utility model provides a rubber oil seal with self-lubricating function, including an oil seal body 1, a lubricating seal strip 2 fixed on the top surface of the oil seal body 1, and a lubricating cavity 4 inside the lubricating seal strip 2. A guide groove 13 is provided on the inner wall of the lubricating seal strip 2 inside the lubricating cavity 4. A plurality of oil outlets 12 are equidistantly provided on the side wall of the guide groove 13, and all oil outlets 12 are connected to the inside of the lubricating cavity 4. An oil guide pipe 5 is fixed through the lubricating seal strip 2 outside the lubricating cavity 4, and a one-way valve 6 is provided on the oil guide pipe 5. The end of the oil guide pipe 5 away from the oil seal body 1 is connected through to the bottom of the oil storage pipe 7, and an inlet pipe 8 is fixed through the top surface of the oil storage pipe 7. The bottom of the oil storage pipe 7 is set as a cone with the tip pointing towards the oil guide pipe 5. The oil guide pipe 5 is set as an "L" shape to cooperate with the oil storage pipe 7 and the lubricating cavity 4. A sealing cap 9 is threaded on the inlet pipe 8.

[0024] The specific settings and functions of this embodiment are described in detail below: The upper and lower outer edges of the oil seal body 1 are provided with sealing positioning grooves 3 to facilitate the installation of the oil seal body 1, and the sealing performance of the oil seal body 1 is ensured by the interlocking and squeezing of the upper and lower ends. The thickness of the lubricating seal 2 is equal to the thickness between the side wall of the sealing positioning groove 3 and the inner side wall of the oil seal body 1. The lubricating seal 2, the lubrication cavity 4 and the guide groove 13 are set as annular rings that cooperate with the oil seal body 1. The inner wall of the lubricating seal 2 on the outer side of the lubrication cavity 4 is provided with an inlet that cooperates with the oil guide pipe 5 to facilitate the entry of lubricating oil into the lubrication cavity 4.

[0025] Example 2

[0026] like Figure 1-4As shown, a booster pipe 10 is fixedly installed at the top of the oil guide pipe 5 between the one-way valve 6 and the lubrication seal 2, and a booster piston 15 is slidably installed inside the booster pipe 10. An opening that mates with the booster pipe 10 is opened on the top surface of the oil guide pipe 5 below the booster pipe 10. The diameter of the booster piston 15 is larger than the diameter of the opening, and the inner diameter of the booster pipe 10 is larger than the inner diameter of the oil guide pipe 5. A servo cylinder 11 is installed on the top surface of the booster pipe 10, and the output rod of the servo cylinder 11 slides through the top of the booster pipe 10 and is fixed on the top surface of the booster piston 15.

[0027] The overall effect of this embodiment is that the thickness of the guide groove 13 is less than the thickness of the lubrication seal 2 inside the lubrication cavity 4, ensuring that the guide groove 13 and the lubrication cavity 4 are connected through the oil outlet 12, and the guide groove 13 is connected to the inside of the lubrication cavity 4 through the oil outlet 12. Each oil outlet 12 is fixed with a filter screen 14 that is flush with the side wall of the guide groove 13. The filter screen 14 protects the oil outlet 12 and prevents the oil outlet 12 from being blocked by debris inside the oil seal body 1 and the lubrication seal 2.

[0028] The usage and working principle of this device are as follows: When the oil seal is needed, the oil seal body 1 and the lubricating seal strip 2 are fitted onto the outside of the output component, and the sealing cap 9 is turned to open the inlet pipe 8, which opens the oil storage pipe 7. Lubricating oil can then be added into the oil storage pipe 7 through the inlet pipe 8. After adding the oil, the sealing cap 9 is turned to the inlet pipe 8 and fixed. The servo cylinder 11 moves and drives the booster piston 15 to move up to the top surface inside the booster pipe 10. Then, the one-way valve 6 is opened, allowing the lubricating oil inside the oil storage pipe 7 to enter the lubrication chamber 4, the booster pipe 10, and the guide groove 13. Then, the one-way valve 6 is closed. At this time, the servo cylinder 11 moves and drives the booster piston 15 to move down, which pushes the lubricating oil inside the booster pipe 10 into the lubrication chamber 4. This pushes the lubricating oil inside the lubrication chamber 4 into the guide groove 13 and, under pressure, it makes full contact with the output component.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A self-lubricating rubber oil seal, comprising an oil seal body (1), characterized in that: The top surface of the oil seal body (1) is fixed with a lubricating seal (2), and a lubricating cavity (4) is opened inside the lubricating seal (2). A guide groove (13) is opened on the inner wall of the lubricating seal (2) inside the lubricating cavity (4). Several oil outlets (12) are opened at equal intervals on the side wall of the guide groove (13), and all oil outlets (12) are connected to the inside of the lubricating cavity (4). An oil guide pipe (5) is fixed through the lubricating seal (2) outside the lubricating cavity (4), and a one-way valve (6) is provided on the oil guide pipe (5). One end of the oil guide pipe (5) away from the oil seal body (1) is connected through to the bottom of the oil storage pipe (7), and an inlet pipe (8) is fixed through the top surface of the oil storage pipe (7). A sealing cap (9) is threaded on the inlet pipe (8).

2. A rubber oil seal with self-lubricating function according to claim 1, characterized in that: The oil seal body (1) has sealing positioning grooves (3) on the outer edges of both the upper and lower ends. The thickness of the lubrication seal (2) is equal to the thickness between the side wall of the sealing positioning groove (3) and the inner side wall of the oil seal body (1).

3. A rubber oil seal with self-lubricating function according to claim 1, characterized in that: The lubrication seal (2), lubrication cavity (4) and guide groove (13) are arranged in an annular shape to cooperate with the oil seal body (1). The inner wall of the lubrication seal (2) on the outer side of the lubrication cavity (4) is provided with an inlet to cooperate with the oil guide pipe (5).

4. A rubber oil seal with self-lubricating function according to claim 1, characterized in that: A booster pipe (10) is fixedly connected to the top of the oil guide pipe (5) between the one-way valve (6) and the lubrication seal (2), and a booster piston (15) is slidably arranged inside the booster pipe (10). A servo cylinder (11) is arranged on the top surface of the booster pipe (10), and the output rod of the servo cylinder (11) slides through the top of the booster pipe (10) and is fixed on the top surface of the booster piston (15).

5. A rubber oil seal with self-lubricating function according to claim 1, characterized in that: The bottom of the oil storage pipe (7) is set as a cone with the tip pointing towards the oil guide pipe (5), and the oil guide pipe (5) is set as an "L" shape to cooperate with the oil storage pipe (7) and the lubrication cavity (4).

6. A rubber oil seal with self-lubricating function according to claim 4, characterized in that: The top surface of the oil guide pipe (5) below the booster pipe (10) is provided with an opening that cooperates with the booster pipe (10). The diameter of the booster piston (15) is larger than the diameter of the opening, and the inner diameter of the booster pipe (10) is larger than the inner diameter of the oil guide pipe (5).

7. A rubber oil seal with self-lubricating function according to claim 1, characterized in that: The thickness of the guide groove (13) is less than the thickness of the lubrication seal (2) inside the lubrication cavity (4), and the guide groove (13) is connected to the inside of the lubrication cavity (4) through the oil outlet (12). Each oil outlet (12) has a filter screen (14) that is flush with the side wall of the guide groove (13).

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