CN202055885U - Air valve oil seal - Google Patents
Air valve oil seal Download PDFInfo
- Publication number
- CN202055885U CN202055885U CN2011200743203U CN201120074320U CN202055885U CN 202055885 U CN202055885 U CN 202055885U CN 2011200743203 U CN2011200743203 U CN 2011200743203U CN 201120074320 U CN201120074320 U CN 201120074320U CN 202055885 U CN202055885 U CN 202055885U
- Authority
- CN
- China
- Prior art keywords
- oil seal
- valve
- air valve
- face
- valve spring
- 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, particularly to an air valve oil seal, wherein an annular end face contacted with an air valve spring is arranged at the bottom of the oil seal; a rotation stop groove matched with the spiral initial part on the end face of the air valve spring is arranged on the upper surface of the annular end face; and the rotation stop groove is a gradually-thinning oblique wedge which rotates around the axis of the air valve oil seal. The air valve oil seal has simple structure and light weight, prevents the air valve spring from rotating together with an air valve guide rod, and ensures the normal working of the air valve and the working performance of the engine.
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 for the sealing to the engine valve guide rod, prevents that lubricant oil from entering the firing chamber, reduces engine performance.In order to simplify installation, to alleviate the weight of valve oil seal, generally be used to replace the annular end face 2 of valve spring holder, as depicted in figs. 1 and 2 in the bottom design of valve oil seal 1.During installation, the annular end face 2 of valve oil seal 1 bottom contacts with body, above valve spring 3 directly is pressed in, thereby need not component such as valve spring holder, has simplified air valve structure, has alleviated the weight of valve oil seal.
In addition, in order to improve valve working life, the part motor has increased compulsory valve rotating mechanism, its effect is in the process that valve opens and closes, force valve guide rod when doing straight reciprocating motion, to rotate around self axis, single straight line motion is converted into the compound motion of straight line and rotation, valve is heated equably and dispels the heat by this compound motion; Can make simultaneously valve and air valve seat ring, valve guide bushing uniform wear, grind mutually, eliminate carbon distribution, prevent gas leakage, phenomenon such as stuck.But because the turning effort of valve guide rod will drive valve spring 3 and also rotate in movement process, this can directly influence the stability of valve spring work, and can increase engine noise.
The model utility content
The purpose of this utility model has been to propose a kind of novel valve oil seal, and it is simple in structure, and is in light weight, and has stoped valve spring to be rotated with valve guide rod, has guaranteed the proper functioning of valve and the service behaviour of motor.
The utility model is to adopt following technological scheme to realize: a kind of valve oil seal, the bottom of valve oil seal is provided with the annular end face that contacts with valve spring, wherein, the annular end face upper surface is provided with the spline groove that agrees with mutually with the spiral initial part of valve spring end face, the shape and the valve spring of spline groove are complementary, and promptly the spline groove is around valve oil seal axis rotation and the degree of depth by the inclined wedge-shaped that diminishes gradually greatly.
The beneficial effects of the utility model are: by the spline groove is set on annular end face, make valve guide rod when doing moving back and forth and rotatablely move at a high speed, stoped valve spring to be rotated with valve guide rod, thereby avoided problems such as valve spring service behaviour instability that the valve spring rotation caused and operating noise, guaranteed the proper functioning of valve and the service behaviour of motor.
Description of drawings
Fig. 1 is a valve oil seal plan view in the prior art;
Fig. 2 is the plan view during valve oil seal outer installment valve spring in the prior art;
Fig. 3 is the plan view of valve oil seal in the utility model;
Fig. 4 is the plan view during valve oil seal outer installment valve spring in the utility model;
Fig. 5 is the schematic representation of valve oil seal annular end face in the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 3 to Fig. 5 is a valve oil seal described in the utility model.The bottom of valve oil seal 1 is provided with annular end face 2, and annular end face 2 can replace existing valve spring holder, thereby need not to be provided with in oil sealing 1 parts such as valve spring holder, has both simplified air valve structure, has alleviated valve weight again.The upper surface of annular end face 2 contacts with valve spring 3, and annular end face 2 upper surfaces are provided with the spline groove 4 that agrees with mutually with the spiral initial part of valve spring 3 end faces, the shape of spline groove 4 and valve spring 3 are complementary, and it is around valve oil seal axis rotation and the degree of depth by the inclined wedge-shaped that diminishes gradually greatly.When valve spring was installed, rotary valve spring 3 embedded in the spline groove 4 the spiral initial part of valve spring 3 end faces just.The annular inner surface of valve oil seal 1 and valve guide rod interference fit, its annular outer surface and valve guide bushing interference fit.During valve work, the valve guide rod rotation, and cause the power of valve spring 3 rotations to pass to valve oil seal 1 owing to stopping of locking groove 4, because the valve oil seal interference is assemblied on the valve guide bushing, and the valve guide bushing interference is assemblied in and can't rotates on the body, thereby stoped rotatablely moving of valve spring 3, guaranteed the fixing of its position.
Claims (1)
1. valve oil seal, the bottom of valve oil seal is provided with the annular end face (2) that contacts with valve spring (3), it is characterized in that: described annular end face (2) upper surface is provided with the spline groove (4) that agrees with mutually with the spiral initial part of valve spring (3) end face, the shape of spline groove (4) and valve spring (3) are complementary, and promptly spline groove (4) is around valve oil seal axis rotation and the degree of depth by the inclined wedge-shaped that diminishes gradually greatly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200743203U CN202055885U (en) | 2011-03-19 | 2011-03-19 | Air valve oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200743203U CN202055885U (en) | 2011-03-19 | 2011-03-19 | Air valve oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202055885U true CN202055885U (en) | 2011-11-30 |
Family
ID=45015859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200743203U Expired - Fee Related CN202055885U (en) | 2011-03-19 | 2011-03-19 | Air valve oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202055885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717855A (en) * | 2017-11-22 | 2018-02-23 | 无锡沃尔福汽车技术有限公司 | One kind can repair valve oil seal press-fitting tool and application method |
-
2011
- 2011-03-19 CN CN2011200743203U patent/CN202055885U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717855A (en) * | 2017-11-22 | 2018-02-23 | 无锡沃尔福汽车技术有限公司 | One kind can repair valve oil seal press-fitting tool and application method |
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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: 20111130 Termination date: 20150319 |
|
| EXPY | Termination of patent right or utility model |