CN212616291U - Axle bearing oil seal - Google Patents
Axle bearing oil seal Download PDFInfo
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- CN212616291U CN212616291U CN202021481006.2U CN202021481006U CN212616291U CN 212616291 U CN212616291 U CN 212616291U CN 202021481006 U CN202021481006 U CN 202021481006U CN 212616291 U CN212616291 U CN 212616291U
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- framework
- lip
- oil seal
- main lip
- sealing body
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model relates to the technical field of oil seals, in particular to an axle bearing oil seal, which is formed by combining an outer oil seal and an inner oil seal; the outer oil seal comprises an outer framework and an outer rubber sealing body, and the section of the outer framework is in a shape of a Chinese character 'ji'; the inner oil seal comprises an inner framework and an inner rubber sealing body, the section of the inner framework is L-shaped, and the inner framework is inserted into the middle position of the outer framework; the outer rubber sealing body is provided with an outer main lip extending upwards and an outer auxiliary lip inclining downwards, and the back of the outer main lip is provided with a spring; the inner rubber sealing body is provided with an inner main lip and an inner auxiliary lip, four sealing surfaces are formed between the outer main lip, the outer auxiliary lip and the inner framework and between the inner main lip, the inner auxiliary lip and the inner framework, the sealing performance is improved, and the sealing structure can adapt to various severe working conditions.
Description
Technical Field
The utility model relates to an oil blanket technical field, concretely relates to axle bearing oil blanket.
Background
The oil seal is a mechanical element for sealing oil, and separates a part needing lubrication in a transmission part from a force-applying part, so that the lubricating oil is prevented from leaking. The seal of the oil seal is formed by interference fit between a flexible sealing element (leather, rubber, polytetrafluoroethylene, polychlorotrifluoroethylene, polyimide, or the like) and the rotating shaft.
In recent years, with the rapid development of industries such as automobiles, engineering machinery and the like, market competition is increasingly violent, and the requirements on matched parts are higher and higher. For example, axle bearings require good sealing performance at high temperatures and high rotational speeds, whereas conventional oil seals typically employ a single piece, single lip or double lip rotary design. Although the oil seal has a simple and practical structure, only one lip is used for sealing, the sealing effect is poor, and the oil seal is easy to leak oil when applied to the working conditions with severe environment such as mine cars, rice transplanters, ploughs and the like.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem be: the axle bearing oil seal in the prior art is poor in sealing effect, oil leakage phenomenon is easily generated under severe working conditions, and the axle bearing oil seal is good in sealing effect and capable of adapting to severe working conditions.
The utility model is realized by the following technical proposal that an axle bearing oil seal is formed by combining an outer oil seal and an inner oil seal;
the outer oil seal comprises an outer framework and an outer rubber sealing body, and the section of the outer framework is in a shape like a Chinese character 'ji' with a long outer edge and a short inner edge;
the inner oil seal comprises an inner framework and an inner rubber sealing body, the section of the inner framework is L-shaped, the inner framework is inserted into the middle positions of the outer edge and the inner edge end of the outer framework, and the inner side surface of the inner rubber sealing body is in interference fit with the shaft and keeps relatively static;
the outer rubber sealing body is provided with an outer main lip extending upwards and an outer auxiliary lip inclining downwards at the end part of the inner edge of the outer framework, the back of the outer main lip is provided with a spring, and the outer main lip and the outer auxiliary lip are in close contact fit with the inner framework;
the horizontal end thickness of interior rubber seal frame at inner frame thickens to upwards uplift, slant downwardly extending have interior main lip and interior vice lip, interior main lip and interior vice lip and outer frame in close contact with cooperation.
Furthermore, the interference magnitude of the outer auxiliary lip is larger than that of the outer main lip, for convenient installation, the inner framework is provided with steps, and the diameter of the inner framework at the outer auxiliary lip is larger than that at the outer main lip.
Furthermore, a plurality of annular convex patterns are arranged on the inner side surface of the inner rubber sealing body.
Furthermore, the thickness of the end part of the outer edge of the outer framework is reduced, and an inward flanging structure is formed by rolling after assembly.
The utility model has the advantages that:
1. the utility model discloses form by outer oil blanket and the combination of interior oil blanket, be the quiet seal face between interior oil blanket and the rotation axis, wherein the medial surface of interior rubber seal body is equipped with a plurality of cyclic annular burr, increases the sealing performance of quiet seal face, forms the quiet seal face between outer oil blanket and the cavity, and the dynamic seal face of reality is between outer oil blanket and interior oil blanket, four seal lips have been designed altogether between outer oil blanket and the interior oil blanket, form the multichannel sealing strip, have increased substantially the sealing performance of oil blanket, and the sealing circuit that four seal lips formed moreover is the S-shaped, has improved sealing performance.
2. The interference magnitude of outer vice lip is greater than the interference magnitude of outer main lip, effectively blocks the invasion of outside foreign matter, the inner frame is equipped with the step, and the diameter of inner frame in outer vice lip department is greater than the diameter of outer main lip department, the installation of being convenient for.
Drawings
Fig. 1 is a schematic structural diagram of an axle bearing oil seal of the present invention.
In the figure: 1. an outer oil seal; 11. an outer skeleton; 12. an outer rubber seal body; 13. an outer main lip; 14. an outer minor lip; 15. a spring; 16. a flanging structure; 2. an inner oil seal; 21. an inner skeleton; 22. an inner rubber seal body; 23. an inner main lip; 24. an inner minor lip; 25. an annular rib.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figure 1, the axle bearing oil seal is formed by combining an outer oil seal 1 and an inner oil seal 2;
the outer oil seal 1 comprises an outer framework 11 and an outer rubber sealing body 12, wherein the section of the outer framework 11 is in a shape like a Chinese character 'ji' with a long outer edge and a short inner edge;
the inner oil seal 2 comprises an inner framework 21 and an inner rubber sealing body 22, the section of the inner framework 21 is L-shaped, the inner framework 21 is inserted into the middle positions of the outer edge and the inner edge end part of the outer framework 11, and the inner side surface of the inner rubber sealing body 22 is in interference fit with a shaft and keeps relatively static;
the outer rubber sealing body 12 is provided with an outer main lip 13 extending upwards and an outer auxiliary lip 14 inclining downwards at the end part of the inner side of the outer framework 11, the back of the outer main lip 13 is provided with a spring 15, and the outer main lip 13 and the outer auxiliary lip 14 are in close contact fit with the inner framework 21;
In practical application, the interference of the outer minor lip 14 is greater than that of the outer major lip 13, for convenient installation, the inner frame 21 is provided with a step, and the diameter of the inner frame 21 at the outer minor lip 14 is greater than that at the outer major lip 13.
In practical application, the inner side surface of the inner rubber sealing body 22 is provided with a plurality of annular ribs 25.
In practical applications, the outer end of the outer frame 11 is thinned and rolled to form an inward flange structure 16 after assembly.
The utility model discloses a theory of operation:
the utility model discloses form by outer oil blanket 1 and the combination of interior oil blanket 2, be quiet sealed face between interior oil blanket 2 and the rotation axis, wherein the medial surface of interior rubber seal 22 is equipped with a plurality of cyclic annular burr 25, increases the sealing performance of quiet sealed face, forms quiet sealed face between outer oil blanket 1 and the cavity, and the dynamic seal face of reality is between outer oil blanket 1 and interior oil blanket 2, four seal lips have been designed altogether between outer oil blanket 1 and the interior oil blanket 2, form the multichannel sealing strip, have increased substantially the sealing performance of oil blanket, and the sealing circuit that four seal lips formed is the S-shaped moreover, has improved sealing performance, is applicable to environment such as dustiness, muddy water, weeds for the axle of agricultural machinery, military vehicle and machineshop car, has very strong environment adaptability.
To sum up, an axle bearing oil blanket have very strong sealing capacity, can adapt to abominable operating mode environment.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the present invention is to provide a person skilled in the art with the ability to understand the contents of the present invention and implement the same, and not to limit the scope of the present invention.
Claims (4)
1. The utility model provides an axle bearing oil blanket which characterized in that: is formed by combining an outer oil seal (1) and an inner oil seal (2);
the outer oil seal (1) comprises an outer framework (11) and an outer rubber sealing body (12), wherein the section of the outer framework (11) is in a shape like a Chinese character 'ji' with a long outer edge and a short inner edge;
the inner oil seal (2) comprises an inner framework (21) and an inner rubber sealing body (22), the section of the inner framework (21) is L-shaped, the inner framework (21) is inserted into the middle positions of the outer edge and the inner edge end part of the outer framework (11), and the inner side surface of the inner rubber sealing body (22) is in interference fit with a shaft and keeps relatively static;
the outer rubber sealing body (12) is provided with an outer main lip (13) extending upwards and an outer auxiliary lip (14) inclining downwards at the end part of the inner side of the outer framework (11), a spring (15) is arranged on the back surface of the outer main lip (13), and the outer main lip (13) and the outer auxiliary lip (14) are in close contact fit with the inner framework (21);
interior rubber seal (22) thickens at the horizontal tip thickness of inner frame (21) to the uplift makes progress, and slant downwardly extending has interior main lip (23) and interior vice lip (24), interior main lip (23) and interior vice lip (24) and outer frame (11) in close contact with cooperation.
2. The axle bearing oil seal of claim 1, wherein: the interference magnitude of the outer auxiliary lip (14) is larger than that of the outer main lip (13), for convenient installation, the inner framework (21) is provided with steps, and the diameter of the inner framework (21) at the outer auxiliary lip (14) is larger than that of the outer main lip (13).
3. The axle bearing oil seal of claim 1, wherein: the inner side surface of the inner rubber sealing body (22) is provided with a plurality of annular convex patterns (25).
4. The axle bearing oil seal of claim 1, wherein: the end part of the outer edge of the outer framework (11) is thinned, and is rolled to form an inward flanging structure (16) after assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021481006.2U CN212616291U (en) | 2020-07-23 | 2020-07-23 | Axle bearing oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021481006.2U CN212616291U (en) | 2020-07-23 | 2020-07-23 | Axle bearing oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212616291U true CN212616291U (en) | 2021-02-26 |
Family
ID=74719368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021481006.2U Active CN212616291U (en) | 2020-07-23 | 2020-07-23 | Axle bearing oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212616291U (en) |
-
2020
- 2020-07-23 CN CN202021481006.2U patent/CN212616291U/en active Active
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