CN201992072U - Narrow-edge framework oil seal - Google Patents
Narrow-edge framework oil seal Download PDFInfo
- Publication number
- CN201992072U CN201992072U CN2011200478890U CN201120047889U CN201992072U CN 201992072 U CN201992072 U CN 201992072U CN 2011200478890 U CN2011200478890 U CN 2011200478890U CN 201120047889 U CN201120047889 U CN 201120047889U CN 201992072 U CN201992072 U CN 201992072U
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- Prior art keywords
- oil seal
- narrow
- framework oil
- oil sealing
- sealing
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- Expired - Fee Related
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Abstract
The utility model relates to a sealing part, in particular to a narrow-edge framework oil seal, which comprises a framework, a spring, a main sealing lip and a dustproof lip, wherein one end of the bottom of the framework connected with rubber is warped upwardly. The narrow-edge framework oil seal is simple in structure, the rigidity of the oil seal is enhanced effectively, elliptical deformation of the oil seal and roundness out-of-tolerance of the oil seal caused by elliptical deformation are decreased or prevented, normal installation and use of the oil seal are ensured, and the narrow-edge framework oil seal is fine in sealing effect.
Description
Technical field
The utility model relates to a kind of Sealing, especially a kind of narrow limit shape outside framework oil seal.
Background technique
The outside diameter D of outside framework oil seal is that inner diameter d that the aperture in fitting seat hole deducts oil sealing is to be not more than 10 i.e. (D-d)/2≤10 divided by 2 behind the diameter of axle, or the oil sealing of similar sizes is a narrow limit shape outside framework oil seal.Narrow limit shape outside framework oil seal at present commonly used as depicted in figs. 1 and 2, wherein Fig. 1 is the inner frame oil sealing, Fig. 2 is for exposing outside framework oil seal.Because the less oil sealing rigidity that causes of support frame size is relatively poor, make oil sealing in manufacturing, transportation, installation process, produce ovalizing deflection, cause the oil sealing circularity over tolerance and can't install or seal failure.If with framework material thickening, not only, also correspondingly increased the manufacture cost of oil sealing to having little effect of increasing oil sealing rigidity, prevent that circularity over tolerance from playing.
The model utility content
The purpose of this utility model has been to propose a kind of novel narrow limit shape outside framework oil seal, and it is simple in structure, has increased the rigidity of oil sealing effectively, reduces or prevents because of ovalizing deflection causes the oil sealing circularity over tolerance, guarantees the normal mounting and the use of oil sealing, good sealing effect.
The utility model is to adopt following technological scheme to realize: a kind of narrow limit shape outside framework oil seal, comprise skeleton, spring, primary seal lip and dust excluder lips, and wherein, the bottom of skeleton and an end that is connected with rubber are and upwarp shape.
The beneficial effects of the utility model are: the bottom by skeleton is set to upwarp shape, can improve the rigidity of oil sealing effectively, reduce or prevent the oil sealing circularity over tolerance that oil sealing produces ovalizing deflection and caused by ovalizing deflection in manufacturing, transportation, installation process, the normal mounting and the use of oil sealing have been guaranteed, good sealing effect need not to increase the cost of production of oil sealing.
Description of drawings
Fig. 1 is the half sectional view of narrow limit shape inner frame oil sealing in the prior art;
Fig. 2 exposes the half sectional view of outside framework oil seal for narrow limit shape in the prior art;
Fig. 3 is the half sectional view of narrow limit shape inner frame oil sealing in the utility model;
Fig. 4 exposes the half sectional view of outside framework oil seal for narrow limit shape in the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 3 is embodiment's 1 described narrow limit shape outside framework oil seal.This oil sealing is the inner frame oil sealing, comprises skeleton 1, spring 2, primary seal lip 3 and dust excluder lips 4.Its medi-spring 2 is for primary seal lip 3 provides radial force, makes between the lip of primary seal lip 3 and the running shaft to be interference fit, prevents oil leakage, played the effect of main sealing.Dust excluder lips 4 is used for preventing that outside impurity such as dust from entering lubricant oil.The bottom of skeleton 1 and an end that is connected with rubber are and upwarp shape, can increase the rigidity of narrow limit shape outside framework oil seal effectively, reduce or prevent the oil sealing circularity over tolerance that oil sealing produces ovalizing deflection and caused by ovalizing deflection in manufacturing, transportation, installation process, thereby avoided oil sealing can't install or seal failure, and can not increase the cost of production of oil sealing.
Fig. 4 is embodiment's 2 described narrow limit shape outside framework oil seals.As different from Example 1: the skeleton of this oil sealing is for exposing skeleton.
Other is with embodiment 1.
Claims (1)
1. one kind narrow limit shape outside framework oil seal comprises skeleton (1), spring (2), primary seal lip (3) and dust excluder lips (4), it is characterized in that: the bottom of skeleton (1) and an end that is connected with rubber are and upwarp shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200478890U CN201992072U (en) | 2011-02-25 | 2011-02-25 | Narrow-edge framework oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200478890U CN201992072U (en) | 2011-02-25 | 2011-02-25 | Narrow-edge framework oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201992072U true CN201992072U (en) | 2011-09-28 |
Family
ID=44668562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200478890U Expired - Fee Related CN201992072U (en) | 2011-02-25 | 2011-02-25 | Narrow-edge framework oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201992072U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828638A (en) * | 2019-04-23 | 2020-10-27 | 爱三工业株式会社 | Sealing device |
-
2011
- 2011-02-25 CN CN2011200478890U patent/CN201992072U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828638A (en) * | 2019-04-23 | 2020-10-27 | 爱三工业株式会社 | Sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20130225 |