CN202381700U - Box type oil seal with high-strength dustproof function - Google Patents
Box type oil seal with high-strength dustproof function Download PDFInfo
- Publication number
- CN202381700U CN202381700U CN2011204893290U CN201120489329U CN202381700U CN 202381700 U CN202381700 U CN 202381700U CN 2011204893290 U CN2011204893290 U CN 2011204893290U CN 201120489329 U CN201120489329 U CN 201120489329U CN 202381700 U CN202381700 U CN 202381700U
- Authority
- CN
- China
- Prior art keywords
- dustproof
- dustproof portion
- oil seal
- seal
- interference fit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model relates to a sealing element, and in particular relates to a box type oil seal with a high-strength dustproof function. The oil seal comprises an outer oil seal and an inner oil seal which are in interference fit, wherein a dustproof structure of the oil seal is formed by five dustproof portions and labyrinth passages formed along the dustproof portions; the five dustproof portions include a first dustproof portion, a second dustproof portion, a third dustproof portion, a fourth dustproof portion and a fifth dustproof portion respectively; the first dustproof portion is formed by bending the bottom of the outer seal framework; the second and third dustproof portions are arranged on the outer side of the inner oil seal; the second dustproof portion is arranged below the third dustproof portion; the second dustproof portion adopts a thick section structure; the third dustproof portion adopts a section with high length-width ratio and small section; the fourth dustproof portion is arranged above the outer framework of the inner oil seal; the fourth dustproof portion adopts a structure with high length-width ratio and large section and is in interference fit with the outer oil seal; and the fifth dustproof portion is a dustproof lip arranged on the inner side of the outer oil seal.
Description
Technical field
The utility model relates to a kind of Sealing, especially a kind of boxlike oil sealing with high tenacity dust reduction capability.
Background technique
The boxlike oil sealing is compared following advantage as a kind of structural type of hub oil seal with the oil sealing of ordinary construction: the primary seal lip of (1) oil sealing is well protected, and the lip that can avoid assembly process to cause pollutes or damages, and reliability is high; (2) the boxlike oil sealing is combined by inner oil seal and outer oil seal; During installation inner oil seal and outer oil seal respectively with an axle and a seat hole interference fit; Inner oil seal and outer oil seal are done relative movement during running; Seal lip is not directly touched with being coupling, and therefore can simplify hardness and the surface finishment requirement of reduction to axle, simplifies the processing technology and the manufacture cost of axle.Because above advantage, the boxlike oil sealing has progressively substituted common oil sealing becomes main hub oil seal structural type.But in the more serious Environmental Conditions of damage ratio, the boxlike oil sealing of existing structure is because its dustproof construction is weak, and it is inner to cause introduced contaminants to get into the boxlike oil sealing easily, and then infringement oil sealing master lip, causes main lip inordinate wear and breakage, produces leakage of oil.
The model utility content
The purpose of the utility model has been to propose a kind of boxlike oil sealing with high tenacity dust reduction capability; It prevents that introduced contaminants from getting into and arriving the primary seal lip oral area position of oil sealing; Avoid introduced contaminants that the primary seal lip is damaged; Guaranteed the sealing effect and the working life of boxlike oil sealing, made the boxlike oil sealing can adapt to the dustproof requirement under the serious pollution environment fully.
The utility model is that the technological scheme below adopting realizes: a kind of boxlike oil sealing with high tenacity dust reduction capability, form by outer oil seal and inner oil seal, and be interference fit between outer oil seal and the inner oil seal; Wherein, the dustproof construction of said oil sealing is made up of dustproof portion in five roads and the mazy passage that forms along dustproof portion, and the dustproof portion in described five roads is respectively the portion of preventing dust of the first dustproof portion, the second dustproof portion, the 3rd dustproof portion, the 4th dustproof portion and the 5th; The first dustproof portion is formed by the bottom bending of outer oil seal skeleton; The second dustproof portion and the 3rd dustproof portion all are arranged on the outer side surface of inner oil seal, and the second dustproof portion is positioned at the below of the 3rd dustproof portion, and the second dustproof portion adopts thick cross section structure; The 3rd dustproof portion adopts aspect ratio, small bore structure; The 4th dustproof portion is positioned at the top of the outer side skeleton of inner oil seal, and the 4th dustproof portion adopts aspect ratio, large-section structure, and itself and outer oil seal are interference fit; The 5th dustproof portion is arranged on the inboard dust excluder lips of outer oil seal, is interference fit between itself and the running shaft.
The beneficial effect of the utility model is: the mazy passage of the utility model through the dustproof portion in five roads being set in the boxlike oil sealing and being formed by the dustproof portion in five roads; Can stop the primary seal lip oral area position of introduced contaminants entering and arrival oil sealing; Prevent that introduced contaminants from damaging the primary seal lip; Guaranteed the sealing effect and the working life of boxlike oil sealing, made the boxlike oil sealing can adapt to the dustproof requirement under the serious pollution environment fully.
Description of drawings
Fig. 1 is the half sectional view of existing boxlike oil sealing;
Fig. 2 is the half sectional view of boxlike oil sealing in the utility model.
Among the figure: 1 outer oil seal; 2 inner oil seals; 3 primary seal lips; 4 the 5th dustproof portions; 5 first dustproof portions; 6 second dustproof portions; 7 the 3rd dustproof portions; 8 the 4th dustproof portions.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 2 is the described boxlike oil sealing of the utility model.This oil sealing is made up of outer oil seal 1 and inner oil seal 2, is interference fit between outer oil seal 1 and the inner oil seal 2.The dustproof construction of this oil sealing is made up of the mazy passage that dustproof portion of dustproof portion in five roads and edge forms.The dustproof portion in described five roads is respectively first 5, second the 6, the 3rd the 7, the 4th dustproof portion 8 of dustproof portion and the 5th dustproof portion 4 of dustproof portion of dustproof portion; Wherein, The first dustproof portion 5 is formed by the bottom bending of outer oil seal 1 skeleton; Should inner oil seal 2 and outer oil seal 1 be combined into one dustproof portion, also stop that extraneous larger particles impurity got in the oil sealing simultaneously.The second dustproof portion 6 and the 3rd dustproof portion 7 all are arranged on the outer side surface of inner oil seal 2, and the second dustproof portion 6 is positioned at the below of the 3rd dustproof portion 7.The second dustproof portion 4 adopts thick cross section structure, is formed by the vulcanization of rubber, and it is used to stop and has got into the inner impurity of oil sealing, avoids that impurity causes direct impact to the 3rd dustproof portion 5 in the oil sealing operation process.The 3rd dustproof portion 7 adopts aspect ratio, small bore structure, is interference fit with outer oil seal skeleton inboard.The 4th dustproof portion 8 is positioned at the top of inner oil seal 2 outer side skeletons; It adopts aspect ratio, larger cross-section structure; Itself and outer oil seal are interference fit, and the 3rd dustproof portion 7 and the 4th dustproof portion 8 had both guaranteed less friction moment of torsion and good servo-actuated property, had realized good sealing effect again.The 5th dustproof portion 4 is for being arranged on the inboard dust excluder lips of outer oil seal, is interference fit between itself and the running shaft.Reasonably combined between the dustproof portion in five roads, and form mazy passage, can stop introduced contaminants fully and get into and arrive primary seal lip 3 places, prevent that introduced contaminants from damaging primary seal lip 3, improved the sealing effect of oil sealing.
Claims (1)
1. boxlike oil sealing with high tenacity dust reduction capability; Form by outer oil seal (1) and inner oil seal (2); Be interference fit between outer oil seal (1) and the inner oil seal (2), it is characterized in that: the dustproof construction of said oil sealing is made up of dustproof portion in five roads and the mazy passage that forms along dustproof portion, and the dustproof portion in described five roads is respectively the portion (4) of preventing dust of the first dustproof portion (5), the second dustproof portion (6), the 3rd dustproof portion (7), the 4th dustproof portion (8) and the 5th; The first dustproof portion (5) is formed by the bottom bending of outer oil seal (1) skeleton; The second dustproof portion (6) and the 3rd dustproof portion (7) all are arranged on the outer side surface of inner oil seal (2), and the second dustproof portion (6) is positioned at the below of the 3rd dustproof portion (7), and the second dustproof portion (4) adopts thick cross section structure; The 3rd dustproof portion (7) adopts aspect ratio, small bore structure; The 4th dustproof portion (8) is positioned at the top of the outer side skeleton of inner oil seal (2), and the 4th dustproof portion (8) adopts aspect ratio, large-section structure, and itself and outer oil seal are interference fit; The 5th dustproof portion (4) is for being arranged on the inboard dust excluder lips of outer oil seal, is interference fit between itself and the running shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204893290U CN202381700U (en) | 2011-11-30 | 2011-11-30 | Box type oil seal with high-strength dustproof function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204893290U CN202381700U (en) | 2011-11-30 | 2011-11-30 | Box type oil seal with high-strength dustproof function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381700U true CN202381700U (en) | 2012-08-15 |
Family
ID=46630204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204893290U Expired - Fee Related CN202381700U (en) | 2011-11-30 | 2011-11-30 | Box type oil seal with high-strength dustproof function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381700U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644304A (en) * | 2013-12-10 | 2014-03-19 | 四川诺成航空橡塑密封有限责任公司 | Lip-shaped labyrinth seal ring with L-shaped metallic framework and U-shaped metallic framework reversely combined |
| JP2018031400A (en) * | 2016-08-23 | 2018-03-01 | Nok株式会社 | Sealing device |
| CN110486473A (en) * | 2019-08-06 | 2019-11-22 | 昆明学院 | A kind of novel rotary rotating shaft lip-type packing |
-
2011
- 2011-11-30 CN CN2011204893290U patent/CN202381700U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644304A (en) * | 2013-12-10 | 2014-03-19 | 四川诺成航空橡塑密封有限责任公司 | Lip-shaped labyrinth seal ring with L-shaped metallic framework and U-shaped metallic framework reversely combined |
| JP2018031400A (en) * | 2016-08-23 | 2018-03-01 | Nok株式会社 | Sealing device |
| CN110486473A (en) * | 2019-08-06 | 2019-11-22 | 昆明学院 | A kind of novel rotary rotating shaft lip-type packing |
| CN110486473B (en) * | 2019-08-06 | 2021-03-19 | 昆明学院 | Novel rotary shaft lip-shaped sealing ring |
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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: 20120815 Termination date: 20141130 |
|
| EXPY | Termination of patent right or utility model |