CN215861743U - High-deflection framework oil seal - Google Patents
High-deflection framework oil seal Download PDFInfo
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- CN215861743U CN215861743U CN202121731446.3U CN202121731446U CN215861743U CN 215861743 U CN215861743 U CN 215861743U CN 202121731446 U CN202121731446 U CN 202121731446U CN 215861743 U CN215861743 U CN 215861743U
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- lip
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- oil seal
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Abstract
The utility model provides a high-deflection framework oil seal, which comprises: the outer ring of the rubber sealing ring is embedded with the metal framework, the outer diameter of the rubber sealing ring is a static sealing surface, the inner diameter of the rubber sealing ring is a dynamic sealing surface, the dynamic sealing surface is provided with a bending portion, the bending portion and the static sealing surface are connected through a lining, a second sealing lip which is obliquely arranged is formed by extending from the rear of the bending portion, a first sealing lip which is obliquely arranged is formed by extending from the front of the bending portion, the directions of the lip end portion of the first sealing lip and the lip end portion of the second sealing lip are the same, and the thickness of the bending portion, which is close to the second sealing lip, is larger than the thickness of the bending portion, which is close to the first sealing lip. The utility model provides a lip-shaped design of high flexibility in a high-flexibility framework oil seal, which can ensure the sealing performance by improving the following performance, has low temperature rise and friction loss, prolongs the service life and reduces the energy consumption.
Description
Technical Field
The utility model relates to high-deflection framework oil, in particular to a high-deflection framework oil seal, and belongs to the technical field of mechanical sealing elements.
Background
An oil seal, also known as a rotating shaft lip seal, is a sealing element for sealing oil used to seal a rotating shaft in a mechanical device, while the cavity is substantially stationary.
The sealing state of the oil seal is static sealing between the outer edge of the oil seal and the cavity, and meanwhile, reliable positioning of the outer edge of the oil seal between the cavities is guaranteed. And the other is the sealing state between the oil seal lip and the shaft, namely dynamic sealing when the shaft rotates and static sealing when the shaft is static. The comprehensive effect and the interaction of various influencing factors greatly influence the sealing performance and the service life of the oil seal.
Disclosure of Invention
The utility model aims to provide a framework oil seal with longer service life. In order to achieve the technical purpose, the utility model adopts the following technical scheme.
Provided is a high-deflection framework oil seal, comprising: the outer ring of the rubber sealing ring is embedded with the metal framework, the outer diameter of the rubber sealing ring is a static sealing surface, the inner diameter of the rubber sealing ring is a dynamic sealing surface, the dynamic sealing surface is provided with a bending portion, the bending portion and the static sealing surface are connected through a lining, a second sealing lip which is obliquely arranged is formed by extending from the rear of the bending portion, a first sealing lip which is obliquely arranged is formed by extending from the front of the bending portion, the lip end portion of the first sealing lip is the same as the lip end portion of the second sealing lip in the direction, and the thickness of the bending portion close to the second sealing lip is larger than the thickness of the bending portion close to the first sealing lip.
Further, the metal framework is an L-shaped metal framework.
Further, the inner surface of the waist part of the lip on the bending part between the second sealing lip and the first sealing lip is horizontal.
Further, the outer surface of the waist part of the lip on the bending part between the second sealing lip and the first sealing lip is inclined.
Furthermore, the front end of the outer side of the rubber sealing ring is provided with a front chamfer, and the rear end of the outer side of the rubber sealing ring is provided with a rear chamfer.
Further, the outer side of the second sealing lip and the end part of the rubber sealing ring form a peripheral rubber groove.
Further, the inner side of the first seal lip and the inner surface of the waist portion of the lip on the flexure portion between the second seal lip and the first seal lip form a lip pocket.
The utility model has the following beneficial technical effects: the utility model provides a lip-shaped design of high deflection in a high deflection framework oil seal, which can ensure the sealing performance by improving the following performance, has low temperature rise and friction loss, prolongs the service life and reduces the energy consumption; the peripheral rubber groove is designed, so that the device is suitable for an assembly environment with a smaller radial space; the reverse design of the lip can be used for blocking dust and providing better dustproof effect; the lip pocket may store grease to aid in pre-lubrication.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a high-deflection framework oil seal according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a partial structure of a high-deflection framework oil seal provided by an embodiment of the utility model;
the labels in the figure are:
1-rubber sealing ring, 2-metal framework; 3-static sealing surface; 4-a first sealing lip; 5-outer labial lumbar surface, 6-flexure; 7-end face; 8-lip pocket; 9-wave curved surface; 10-front chamfering; 11-back chamfering; 12-peripheral rubber groove; 13-lining; 14-a second sealing lip; 15-inner surface of lip waist.
Detailed Description
For a further understanding of the utility model, reference will now be made in detail to the embodiments illustrated in the drawings.
Example (b): as shown in fig. 1 and 2, a high-deflection framework oil seal includes: the rubber sealing ring comprises a rubber sealing ring 1 and a metal framework 2, the metal framework 2 is embedded in an outer ring of the rubber sealing ring 1, the outer diameter of the rubber sealing ring 1 is a static sealing surface 3, the inner diameter of the rubber sealing ring is a dynamic sealing surface, a bending part 6 is arranged on the dynamic sealing surface, the bending part 6 is connected with the static sealing surface through a lining 13, a second sealing lip 14 which is obliquely arranged is formed by extending from the rear part of the bending part 6, a first sealing lip 4 which is obliquely arranged is formed by extending from the front part of the bending part 6, the direction of the lip end part of the first sealing lip 4 is the same as that of the lip end part of the second sealing lip 14, and the thickness of the bending part 6 close to the second sealing lip is larger than that of the bending close to the first sealing lip.
The metal framework 3 is an L-shaped metal framework, and comprises a horizontal part and a vertical part which are connected. The metal framework plays a role in strengthening, and the oil seal can keep the shape and the tension.
The first sealing lip and the second sealing lip are flexible elastic bodies, and can still keep stable sealing action under the conditions of mechanical vibration and pressure variation of sealing fluid, and keep the lip portion and the shaft surface in a stable contact state. The lip ends of the first and second sealing lips are made in the form of wedges, pressing against the shaft surface at the ends, acting as a sealing fluid. The second sealing lip can also play a dustproof role.
The outer edge of the high-deflection framework and the assembly part are statically sealed, and meanwhile, the outer edge of the oil seal is reliably positioned in the assembly space of the assembly part. Meanwhile, the sealing state between the first sealing lip and the shaft and the sealing state between the second sealing lip and the shaft are dynamic sealing when the shaft rotates and static sealing when the shaft is static. The comprehensive effect and the interaction of various influencing factors greatly influence the sealing performance and the service life of the oil seal. The lip type design of high flexibility in the oil blanket that this embodiment provided promotes the followability and can ensures the leakproofness, and the temperature rise is low, and friction loss hangs down and promotes life to reduce the energy consumption.
In the above embodiment, the inner surface 15 of the flexure 6 between the second seal lip 14 and the first seal lip 4 is horizontal. The outer surface 5 of the lip waist portion of the deflection portion 6 between the second seal lip 14 and the first seal lip 4 is beveled. The outer surface of the flexible portion 6 adjacent the second lip is inclined towards the outer surface of the flexible portion adjacent the first lip.
In order to facilitate oil seal assembly, the front end of the outer side of the rubber seal ring 1 is provided with a front chamfer 10, and the rear end is provided with a rear chamfer 11, which can realize good assembly guiding function.
In the specific embodiment, optionally, the outer side of the second sealing lip 14 and the end of the rubber sealing ring 1 form a peripheral rubber groove 12, and the peripheral rubber groove is designed to be suitable for an assembly environment with a small radial space.
In a specific embodiment, optionally, the lip recess 8 is formed between the inner side of the first seal lip 4 and the inner surface 15 of the waist portion of the lip between the second seal lip 14 and the first seal lip 4 on the deflection portion 6, and the lip recess can store lubricating grease to help pre-lubrication, reduce the friction force between the seal lip and the surface of the rotating shaft, improve the sealing effect, and prolong the service life of the oil seal.
In the specific embodiment, optionally, the outer edge of the static sealing surface 3 is provided with a wavy curved surface, so that the adhesive force can be increased, the danger of retreating and skewing of the oil seal is avoided, the press fit tolerance is increased, and the reliability of the static sealing of the oil seal can be improved.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (7)
1. A high deflection backbone oil seal, comprising: the outer ring of the rubber sealing ring is embedded with the metal framework, the outer diameter of the rubber sealing ring is a static sealing surface, the inner diameter of the rubber sealing ring is a dynamic sealing surface, the dynamic sealing surface is provided with a bending portion, the bending portion and the static sealing surface are connected through a lining, a second sealing lip which is obliquely arranged is formed by extending from the rear of the bending portion, a first sealing lip which is obliquely arranged is formed by extending from the front of the bending portion, the directions of the lip end portion of the first sealing lip and the lip end portion of the second sealing lip are the same, and the thickness of the bending portion, which is close to the second sealing lip, is larger than the thickness of the bending portion, which is close to the first sealing lip.
2. The high-deflection framework oil seal as claimed in claim 1, wherein the metal framework is an L-shaped metal framework.
3. The high deflection framework oil seal as defined in claim 1, wherein the inner surface of the waist portion of the lip on the deflection portion between the second lip and the first lip is horizontal.
4. The high deflection framework oil seal of claim 1, wherein the outer surface of the waist portion of the lip on the deflection portion between the second seal lip and the first seal lip is beveled.
5. The high-deflection framework oil seal as claimed in claim 1, wherein the front end of the outer side of the rubber seal ring is provided with a front chamfer, and the rear end of the outer side of the rubber seal ring is provided with a rear chamfer.
6. The high-deflection framework oil seal as claimed in claim 1, wherein the outer side of the second seal lip and the end of the rubber seal ring form a peripheral rubber groove.
7. The high deflection backbone oil seal of claim 1, wherein the lip recess is formed on the inner side of said first lip and the inner surface of the waist portion of the lip on the deflection portion between the second lip and the first lip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121731446.3U CN215861743U (en) | 2021-07-28 | 2021-07-28 | High-deflection framework oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121731446.3U CN215861743U (en) | 2021-07-28 | 2021-07-28 | High-deflection framework oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861743U true CN215861743U (en) | 2022-02-18 |
Family
ID=80332194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121731446.3U Active CN215861743U (en) | 2021-07-28 | 2021-07-28 | High-deflection framework oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215861743U (en) |
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2021
- 2021-07-28 CN CN202121731446.3U patent/CN215861743U/en active Active
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