CN202646711U - Oil seal structure resistant to high pressure and adaptable to shaft eccentricity - Google Patents
Oil seal structure resistant to high pressure and adaptable to shaft eccentricity Download PDFInfo
- Publication number
- CN202646711U CN202646711U CN2012202738134U CN201220273813U CN202646711U CN 202646711 U CN202646711 U CN 202646711U CN 2012202738134 U CN2012202738134 U CN 2012202738134U CN 201220273813 U CN201220273813 U CN 201220273813U CN 202646711 U CN202646711 U CN 202646711U
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- skeleton
- lip
- waist
- high pressure
- outer diameter
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Abstract
The utility model discloses an oil seal structure resistant to high pressure and adaptable to shaft eccentricity, and the oil seal structure comprises a skeleton, a rubber seal body and a self-tightening spring and is characterized in that the skeleton adopts a structure of inner and outer skeletons; the rubber seal body comprises an outer diameter A, an outer diameter B, an outer diameter C which are coated at the outer surface of the outer skeleton and sequentially connected as well as a waist and a main seal lip connected with the waist; the outer diameter B is raised out of the outer diameters A and C; the waist extends in the horizontal direction; and the thickness of the labial crown of the main seal lip is 1.2-1.4 times than the normal thickness. According to the utility model, the inner and the outer skeletons are in interference fit to ensure that effective support of the inner skeleton to the oil seal outer diameter is formed; the product waist extends in the horizontal direction to ensure that the following performance of the seal lip is increased; thicker labial crown is adopted to ensure that the bearing capability of the oil seal main lip to sealing medium pressure is increased; and therefore, the oil seal structure is applicable to the 1-3MPa high-pressure sealed environment and is adaptable to the shaft eccentricity of 1mm.
Description
Technical field
The utility model belongs to the rotary oil seal technical field, relates in particular to bear the oil sealing that uses under higher pressure medium and the eccentric shaft amount overall situation.
Background technique
High pressure resistant (1-3Mpa) oil sealing of prior art is owing to the reason of structural design aspect, large (under ± 1mm) the working condition in the eccentric shaft amount, common high-pressure resistant oil seal is because the lip followability is bad, easily in the situation that eccentric shaft is beated, produce seal leakage, reduced the sealability of product, thereby made the lost of life of product, both waste national resources, improved again cost of production.
Summary of the invention
The utility model main purpose is: overcome the deficiencies in the prior art, thereby provide a kind of can be high pressure resistant, can adapt to again simultaneously the oil sealing of eccentric shaft.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of high pressure resistant oil sealing with adapting to eccentric shaft, has skeleton, rubbery sealed body and self-tightening spring, it is characterized in that: in described skeleton adopts, outer two skeletal structure, described rubbery sealed body comprises the outer diameter A that is coated on outer skeleton outer surface and links to each other successively, external diameter B, external diameter C, and waist and coupled primary seal lip, described external diameter B evagination is in outer diameter A, C, described waist stretches out in the horizontal direction, and the lip hat thickness of described primary seal lip is 1.2-1.4 times (or the lip that strengthens hat thickness 20 ﹪-40 ﹪) of normal thickness.External diameter B and cavity Spielpassung, the protruding structure of formation has reduced the distance of installing, and the excessive oil sealing bounce-back that causes of resistance breaks away from cavity in the time of effectively avoiding product to install.
The technical solution of the utility model can also be further perfect:
As preferably, the axial cross section of described outer skeleton is Z-shaped, and the axial cross section of inner frame is L-shaped, takes interference fit between the inside and outside skeleton, to form inner frame to effective support of oil sealing external diameter.
As further preferred, the lip hat thickness of described primary seal lip is 1.3 times of normal thickness.Adopt thicker lip hat, improved oil sealing master lip to the sealed medium pressure ability to bear.
As further preferred, described waist extends 1-3 mm to substantially horizontal, has improved the followability of seal lip.
The beneficial effects of the utility model are:
1, inside and outside skeleton passes through interference fit, reach the purpose of close-fitting, form double-deck skeleton cooperating structure, make inner frame form effective support to the oil sealing external diameter, increased the rigidity of bearing of oil sealing when installing, prevent from installing distortion, the oil sealing after having avoided simultaneously installing is because coming off of producing after being subject to high pressure;
2, the product waist extends in the horizontal direction, has improved the followability of seal lip, and eccentric shaft is had good adaptability, and the seal leakage of having avoided eccentric shaft to beat causing was lost efficacy;
3, adopt thicker lip hat, improved oil sealing master lip to the sealed medium pressure ability to bear, prevent the bad deformation under high pressure of main lip, guarantee the product sealing effect.
4, the utility model is applicable to 1-3MPa high pressure sealing environment, and can adapt to ± the 1mm eccentric shaft.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model;
Accompanying drawing 2 is use phase diagrams of Fig. 1.
Description of reference numerals: 1, inner frame, 2, outer skeleton, 3, outer diameter A, 4, external diameter B, 5, external diameter C, 6, the self-tightening spring, 7, primary seal lip, 71, the lip hat, 8, waist, 9, cavity, 10, axle, 11, O shape circle, d, lip hat are thick.
Embodiment
Below by embodiment also by reference to the accompanying drawings, the technical solution of the utility model is further described in detail.
Embodiment:
As shown in Figure 1, 2 a kind of can the high pressure resistant oil seal structure that can adapt to again eccentric shaft, has skeleton, rubbery sealed body and self-tightening spring 6, and described skeleton adopts inside and outside pair of skeletal structure; The axial cross section of described outer skeleton 2 is Z-shaped, and the axial cross section of inner frame 1 is L-shaped, takes interference fit between the inside and outside skeleton, reaches the purpose of close-fitting; Described rubbery sealed body comprises outer diameter A 3, external diameter B 4, the external diameter C 5 that is coated on outer skeleton outer surface and links to each other successively, and waist 8 and primary seal lip 7; Described external diameter B 4 and cavity 9 Spielpassung, the protruding structure of formation has reduced the distance of installing, the excessive oil sealing bounce-back that causes of resistance in the time of effectively avoiding product to install, break away from cavity, described outer diameter A 3 and external diameter B 4 and cavity 9 interference fit play the effect of double seal; Described waist extends 3 mm in the horizontal direction, has improved the followability of seal lip, and eccentric shaft is had good adaptability, and the seal leakage of having avoided eccentric shaft to beat causing was lost efficacy; The lip hat thickness d of described primary seal lip is 1.3 times of normal lip hat thickness, adopts thicker lip hat, has improved oil sealing master lip to the sealed medium pressure ability to bear, prevents the bad deformation under high pressure of primary seal lip lip, guarantees the product sealing effect.
Claims (4)
1. a high pressure resistant oil sealing with adapting to eccentric shaft has skeleton, rubbery sealed body and self-tightening spring, and it is characterized in that: described skeleton adopts inside and outside pair of skeletal structure; Described rubbery sealed body comprises outer diameter A, external diameter B, the external diameter C that is coated on outer skeleton outer surface and links to each other successively, and waist and the primary seal lip that links to each other with waist; Described external diameter B evagination is in outer diameter A, C, and described waist extends in the horizontal direction, and the lip hat thickness of described primary seal lip is 1.2-1.4 times of normal thickness.
2. according to claim 1 high pressure resistant and adapt to the oil sealing of eccentric shaft, it is characterized in that: the axial cross section of described outer skeleton is Z-shaped, and the axial cross section of inner frame is L-shaped, takes interference fit between the inside and outside skeleton.
3. according to claim 1 and 2 high pressure resistant and adapt to the oil sealing of eccentric shaft, it is characterized in that: the lip hat thickness of described primary seal lip is 1.3 times of normal thickness.
4. according to claim 1 and 2 high pressure resistant and adapt to the oil sealing of eccentric shaft, it is characterized in that: described waist extends 1-3 mm to substantially horizontal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202738134U CN202646711U (en) | 2012-06-12 | 2012-06-12 | Oil seal structure resistant to high pressure and adaptable to shaft eccentricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202738134U CN202646711U (en) | 2012-06-12 | 2012-06-12 | Oil seal structure resistant to high pressure and adaptable to shaft eccentricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646711U true CN202646711U (en) | 2013-01-02 |
Family
ID=47415820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202738134U Expired - Fee Related CN202646711U (en) | 2012-06-12 | 2012-06-12 | Oil seal structure resistant to high pressure and adaptable to shaft eccentricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646711U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832652A (en) * | 2015-04-15 | 2015-08-12 | 广州机械科学研究院有限公司 | High-pressure oil seal assembly |
| CN105889518A (en) * | 2016-05-27 | 2016-08-24 | 成都盛帮密封件股份有限公司 | Enhanced oil seal and manufacturing process thereof |
| CN106855115A (en) * | 2017-03-08 | 2017-06-16 | 重庆青山工业有限责任公司 | A kind of automotive transmission oil sealing mounting structure |
| CN114127449A (en) * | 2019-09-04 | 2022-03-01 | Nok株式会社 | Sealing device |
-
2012
- 2012-06-12 CN CN2012202738134U patent/CN202646711U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832652A (en) * | 2015-04-15 | 2015-08-12 | 广州机械科学研究院有限公司 | High-pressure oil seal assembly |
| CN104832652B (en) * | 2015-04-15 | 2018-01-23 | 广州机械科学研究院有限公司 | A kind of high pressure Oil sealing assembly |
| CN105889518A (en) * | 2016-05-27 | 2016-08-24 | 成都盛帮密封件股份有限公司 | Enhanced oil seal and manufacturing process thereof |
| CN106855115A (en) * | 2017-03-08 | 2017-06-16 | 重庆青山工业有限责任公司 | A kind of automotive transmission oil sealing mounting structure |
| CN114127449A (en) * | 2019-09-04 | 2022-03-01 | Nok株式会社 | Sealing device |
| US11846354B2 (en) | 2019-09-04 | 2023-12-19 | Nok Corporation | Sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150612 |
|
| EXPY | Termination of patent right or utility model |