CN215634980U - Framework oil seal for valve of engine combustion chamber - Google Patents
Framework oil seal for valve of engine combustion chamber Download PDFInfo
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- CN215634980U CN215634980U CN202121648126.1U CN202121648126U CN215634980U CN 215634980 U CN215634980 U CN 215634980U CN 202121648126 U CN202121648126 U CN 202121648126U CN 215634980 U CN215634980 U CN 215634980U
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- framework
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- combustion chamber
- seal
- engine combustion
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Abstract
The utility model discloses a framework oil seal for a valve of an engine combustion chamber, which belongs to the technical field of framework oil seals and has the characteristics of good stability, high assembly precision between the framework oil seal and an assembly hole and the like. The skeleton oil blanket includes: the supporting framework comprises an axial supporting framework and a radial supporting framework which are integrally formed, and one side of the axial supporting framework, which is back to the shaft, is matched with the assembling hole to form static seal; and a seal member attached to one side of the axial support frame facing the shaft and to the outside of the radial support frame, and forming a dynamic seal lip at a free end of the radial support frame to abut against the surface of the shaft.
Description
Technical Field
The utility model belongs to the technical field of framework oil seals, and particularly relates to a framework oil seal for a valve of an engine combustion chamber.
Background
In the prior art, the outside of the supporting framework of the framework oil seal is coated by the sealing rubber, the sealing rubber isolates the supporting framework from the sealing liquid, the supporting framework is protected from being corroded by the sealing liquid while the sealing effect is achieved, but the connection between the framework oil seal and the assembling hole is not stable enough and the assembling precision is not high due to the fact that the sealing rubber is soft in texture.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides the framework oil seal for the valve of the engine combustion chamber, which has the characteristics of good stability, high assembly precision between the framework oil seal and an assembly hole and the like.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: a framework oil seal for a valve of an engine combustion chamber, comprising: the supporting framework comprises an axial supporting framework and a radial supporting framework which are integrally formed, and one side of the axial supporting framework, which is back to the shaft, is matched with the assembling hole to form static seal; and a seal member attached to one side of the axial support frame facing the shaft and to the outside of the radial support frame, and forming a dynamic seal lip at a free end of the radial support frame to abut against the surface of the shaft.
Further, the sealing surface of the dynamic sealing lip is arc-shaped.
Furthermore, the included angle theta between the connecting line of the sealing surface of the dynamic sealing lip and the free end of the radial support framework and the axial direction is more than or equal to 30 degrees and less than or equal to 65 degrees.
Further, the axial support framework and the radial support framework are of L-shaped structures.
Furthermore, the material of the support framework is iron or carbon steel.
Furthermore, the sealing element is made of rubber.
Compared with the prior art, the utility model has the following beneficial effects:
(1) according to the utility model, the sealing element is attached to one side of the supporting framework, the supporting framework is matched with the assembling hole to form static seal, the sealing element is matched with the shaft to form dynamic seal, and the framework oil seal has the characteristics of good stability after being assembled, high assembling precision between the framework oil seal and the assembling hole and the like;
(2) according to the utility model, the sealing surface of the dynamic sealing lip is designed into the circular arc structure, so that the frictional resistance between the dynamic sealing lip and the shaft is reduced, and the abrasion to the sealing element and the shaft is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a framework oil seal for a valve of an engine combustion chamber according to an embodiment of the present invention;
fig. 2 is a partial schematic view of fig. 1 in cooperation with a shaft.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 and 2, a frame oil seal for a valve of an engine combustion chamber comprises: the supporting framework is made of iron or carbon steel and the like, and comprises an axial supporting framework 11 and a radial supporting framework 12, wherein the axial supporting framework 11 and the radial supporting framework 12 are integrally formed, the cross section of the axial supporting framework 11 is of an L-shaped structure, and one side of the axial supporting framework 11, which is back to the shaft 3, is matched with the assembling hole to form static seal; the seal 2 is made of rubber, is adhered to one side of the axial support frame 11 facing the shaft 3 and the outer side of the radial support frame 12 through a vulcanization process, and forms a dynamic seal lip 21 abutting against the surface of the shaft 3 at the free end of the radial support frame 12. In the embodiment, the sealing element 2 is attached to one side of the supporting framework 12, the supporting framework 12 is matched with the assembly hole to form static seal, the sealing element 2 is matched with the shaft to form dynamic seal, and the framework oil seal has the characteristics of good stability, high assembly precision between the framework oil seal and the assembly hole and the like after being assembled; in the embodiment, the framework oil seal is arranged on the valve of the engine combustion chamber, the peripheral supporting framework is not contacted with the sealing liquid, and the inner ring rubber sealing element is contacted with the sealing liquid, so that the supporting framework can be protected from being corroded by the sealing liquid.
The sealing surface 211 of the dynamic sealing lip 21 is in a circular arc shape, and the sealing surface 211 of the dynamic sealing lip 21 is designed to be in a circular arc shape structure, so that the frictional resistance between the dynamic sealing lip 21 and the shaft 3 is reduced, and the abrasion to a sealing member and the shaft is reduced.
The sealing surface 211 of the dynamic sealing lip 21 adopts an arc-shaped structure, so that the structural stability of the sealing surface is ensured, a proper amount of engine oil can be controlled to stably leak, and the lubricating effect of the steam valve and the sliding rod guide block during reciprocating motion is stably assisted.
An included angle theta between a connecting line of the sealing surface 21 of the dynamic sealing lip 21 and the free end of the radial support framework 12 and the axial direction is more than or equal to 30 degrees and less than or equal to 65 degrees, good supporting force of the radial support framework 12 on the dynamic sealing lip 21 is ensured, the sealing effect is ensured, and meanwhile, sealing liquid can be controlled to leak according to preset leakage.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a skeleton oil blanket for engine combustion chamber valve, characterized by includes:
the supporting framework comprises an axial supporting framework and a radial supporting framework which are integrally formed, and one side of the axial supporting framework, which is back to the shaft, is matched with the assembling hole to form static seal;
and a seal member attached to one side of the axial support frame facing the shaft and to the outside of the radial support frame, and forming a dynamic seal lip at a free end of the radial support frame to abut against the surface of the shaft.
2. The framework oil seal for a valve of an engine combustion chamber as defined in claim 1, wherein the sealing surface of the dynamic seal lip is formed in a circular arc shape.
3. The framework oil seal for the valve of the engine combustion chamber as claimed in claim 1, wherein an included angle θ formed by a connecting line of the sealing surface of the dynamic sealing lip and the free end of the radial support framework and the axial direction is more than or equal to 30 degrees and less than or equal to 65 degrees.
4. The framework oil seal for the valve of the engine combustion chamber as claimed in claim 1, wherein the axial support framework and the radial support framework are in an "L" shape.
5. The framework oil seal for the valve of the engine combustion chamber as defined in claim 1, wherein the material of the support framework is iron or carbon steel.
6. The framework oil seal for a valve of an engine combustion chamber as defined in claim 1, wherein the material of the sealing member is rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121648126.1U CN215634980U (en) | 2021-07-20 | 2021-07-20 | Framework oil seal for valve of engine combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121648126.1U CN215634980U (en) | 2021-07-20 | 2021-07-20 | Framework oil seal for valve of engine combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215634980U true CN215634980U (en) | 2022-01-25 |
Family
ID=79890989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121648126.1U Active CN215634980U (en) | 2021-07-20 | 2021-07-20 | Framework oil seal for valve of engine combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215634980U (en) |
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2021
- 2021-07-20 CN CN202121648126.1U patent/CN215634980U/en active Active
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