CN201794629U - Air-valve oil seal - Google Patents
Air-valve oil seal Download PDFInfo
- Publication number
- CN201794629U CN201794629U CN2010205379844U CN201020537984U CN201794629U CN 201794629 U CN201794629 U CN 201794629U CN 2010205379844 U CN2010205379844 U CN 2010205379844U CN 201020537984 U CN201020537984 U CN 201020537984U CN 201794629 U CN201794629 U CN 201794629U
- Authority
- CN
- China
- Prior art keywords
- oil seal
- skeleton
- rubber body
- valve
- air
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model relates to a sealing element, in particular to an air-valve oil seal. The oil seal comprises a sealing lip, a rubber body and a skeleton, wherein ripples are formed on the inner circumferential surface of the rubber body contacting an air-valve pipeline; a rippled structure is arranged on the sealing lip; and the skeleton is in a step shape. As the height of the oil seal is reduced, the oil seal is easy to mount; at the same time, the adhering intensity between the skeleton and the rubber body in the oil seal is greatly enhanced to prevent degumming, so the normal work of a cylinder is guaranteed, and the service lifetime of the oil seal is prolonged.
Description
Technical field
The utility model relates to a kind of Sealing, especially a kind of valve oil seal.
Background technique
Valve oil seal is used to generally prevent that a large amount of lubricant oil from entering cylinder by guide rod, causes that oil level descends, and combustion regime is changed, and produces the over-emitting black exhaust phenomenon.Valve oil seal commonly used at present comprises spring 1, sealing lip 2, rubber body 3 and skeleton 4 as shown in Figure 1.Elastic force in the spring 1 makes sealing lip 2 near valve guide rod, and valve guide rod is played seal action.Its defective is that this oil sealing height is higher, is difficult for assembling during use.
The model utility content
The purpose of this utility model has been to propose a kind of valve oil seal of new structure, and it highly reduces, and is convenient to assembling, and servo-actuated is better.
The utility model is to adopt following technological scheme to realize: a kind of valve oil seal, comprise sealing lip, rubber body and skeleton, wherein, be provided with ripple with the inner peripheral surface of the rubber body of valve guide bushing contacting point, the sealing lip place is provided with wave structure, and its skeleton is stepped.Wherein be convenient to the assembling of oil sealing with the ripple of valve guide bushing contacting point; The servo-actuated that the ripple struction that the sealing lip place is provided with has improved oil sealing; Stepped skeleton has improved the intensity of skeleton, and skeleton is not yielding.
The beneficial effects of the utility model are: compare with existing valve oil seal, this oil sealing height reduces, and therefore is easy to assembling; The bonding strength of skeleton and rubber body improves greatly in this oil sealing simultaneously, prevents degumming phenomenon, guarantees that cylinder can proper functioning, has prolonged the working life of oil sealing.
Description of drawings
Fig. 1 is the half sectional view of existing valve oil seal;
Fig. 2 is the half sectional view of valve oil seal in the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 2 is a valve oil seal described in the utility model, and this oil sealing comprises spring 1, sealing lip 2 and skeleton 4, and the elastic force of its medi-spring 1 provides radial force for sealing lip 2, and is close to valve guide rod, thereby has played seal action.Rubber body 3 inner peripheral surfaces of valve oil seal and valve guide bushing contacting point are provided with ripple, and this wave structure is convenient to the oil sealing assembling.Sealing lip 2 places are provided with ripple, improved oil sealing with kinetic force.Skeleton 4 is stepped simultaneously, and this kind structure has strengthened frame strength, and skeleton is not yielding.In this oil sealing, rubber body 3 increases greatly with the bonding strength of skeleton 4, prevents that degumming phenomenon from appearring in oil seal body; Compare with existing valve oil seal simultaneously, it highly reduces, and is convenient to assembling, is applicable to petrolic valve sealing.
Claims (1)
1. valve oil seal, comprise sealing lip (2), rubber body (3) and skeleton (4), it is characterized in that: be provided with ripple with the inner peripheral surface of the rubber body (3) of valve guide bushing contacting point, sealing lip (2) locates to be provided with wave structure, and the skeleton of oil sealing (4) is stepped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205379844U CN201794629U (en) | 2010-09-21 | 2010-09-21 | Air-valve oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205379844U CN201794629U (en) | 2010-09-21 | 2010-09-21 | Air-valve oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794629U true CN201794629U (en) | 2011-04-13 |
Family
ID=43849544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205379844U Expired - Fee Related CN201794629U (en) | 2010-09-21 | 2010-09-21 | Air-valve oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201794629U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112192507A (en) * | 2020-10-30 | 2021-01-08 | 广西玉柴机器股份有限公司 | Valve stem oil seal structure convenient to press fitting |
-
2010
- 2010-09-21 CN CN2010205379844U patent/CN201794629U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112192507A (en) * | 2020-10-30 | 2021-01-08 | 广西玉柴机器股份有限公司 | Valve stem oil seal structure convenient to press fitting |
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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: 20110413 Termination date: 20130921 |