CN213063779U - Combined oil seal for spark plug and oil injector pipe - Google Patents
Combined oil seal for spark plug and oil injector pipe Download PDFInfo
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- CN213063779U CN213063779U CN202021466753.9U CN202021466753U CN213063779U CN 213063779 U CN213063779 U CN 213063779U CN 202021466753 U CN202021466753 U CN 202021466753U CN 213063779 U CN213063779 U CN 213063779U
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Abstract
The utility model discloses a combined sparking plug and oil sprayer pipe oil seal, which comprises a main seal, wherein an outer skeleton is embedded in the outer side end of the main seal, an annular spring ring is embedded in the inner side of the main seal, the inner skeleton is sleeved in the inner side of the main seal, an inner bushing is fixedly connected in the inner side of the inner skeleton, the inner side of the inner bushing is in interference connection with an oil sprayer sleeve, and the outer side of the main seal is in interference connection with a shell; the inner side surface and the outer side surface of the main seal are both arranged in a wavy manner, so that the contact area between the main seal and the outer side of the outer framework is reduced, and the friction force is increased to prevent the main seal from falling off; the upper portion and the lower portion of the inner side of the inner bushing are wavy in cross section, the ladder-shaped inner framework is in interference connection with the oil injector sleeve, on one hand, the contact area of the oil injector sleeve and the inner bushing is reduced, friction is increased, and meanwhile, the outer framework is in contact with the main seal, the dynamic seal surface is transferred to the outer surface of the inner bushing, so that the requirement for the surface roughness of the oil injector or spark plug seal shaft is lowered.
Description
Technical Field
The utility model relates to a static sealing technical field specifically is a combined spark plug and oil sprayer pipe oil blanket.
Background
Injector and spark plug oil seals are used to seal static highly misaligned spark plugs or injectors, typically located at the top of the combustion chamber. In order to prevent leakage of lubricating oil in the engine and entry of external dusters into the engine, an oil seal is used. The existing oil seal product has the structural characteristics that the spring and the product are molded into a whole, the spring is completely coated by rubber, and the rubber is reinforced and tightened to form a sealing structure.
The existing main lip sealing product structure with the spring has higher requirements on the roughness of the surface of a sealing pipe shaft of a spark plug (fuel injector), the spark plug (fuel injector) can be well sealed only by reaching Ra0.5, and the poor surface roughness of the spark plug (fuel injector) can influence the sealing of an oil seal. In the situation that the difference value between the aperture of an engine cylinder body and the axial diameter of a spark plug (fuel injector) sealing pipe is large, namely the radial dimension of an installation space is large, the conventional main lip sealing product with the spring is easy to turn over when being installed, so that the sealing failure of the product is caused.
Disclosure of Invention
An object of the utility model is to provide a spark plug and oil sprayer pipe oil blanket of combined has solved the problem that proposes among the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a combined spark plug and oil sprayer pipe oil blanket, includes the main seal, the outside end of main seal is embedded to have the exoskeleton, the inboard embedded annular spring ring that has of main seal, the inner frame has been cup jointed to the main seal inboard, the inboard fixedly connected with neck bush of neck bush, the inboard interference of neck bush is connected with the oil sprayer sleeve pipe, the outside interference of main seal is connected with the casing.
Preferably, the main seal is annular, the inner spring lip of the main seal can face upwards or downwards, and the inner side face and the outer side face of the section of the main seal are both wavy.
Preferably, the outer skeleton is annular, and the cross section of the outer skeleton is L-shaped.
Preferably, the inner frame is in a hollow column shape, and the section of the inner frame is in a ladder shape.
Preferably, the inner upper part and the inner lower part of the inner lining are wavy.
Preferably, the shell is in a hollow column shape, the cross section of the shell is in an L shape, the inner diameter of the lower portion of the shell is smaller than that of the upper portion of the shell, and the length of the outer diameter of the main seal is larger than that of the minimum inner diameter of the shell.
Compared with the prior art, the beneficial effects of the utility model are as follows: the inner side face and the outer side face of the main seal are arranged in a wavy manner, so that the contact area of the main seal and the outer side of the outer framework is reduced, the friction force is increased, the main seal is prevented from falling off, and meanwhile, the contact area of the main seal and the shell is reduced, and the friction force is increased, so that the interference connection strength of the shell and the main seal is enhanced; the upper portion and the lower portion of the inner side of the inner bushing are wavy in cross section, the ladder-shaped inner framework is in interference connection with the oil injector sleeve, on one hand, the contact area of the oil injector sleeve and the inner bushing is reduced, friction is increased, and meanwhile, the outer framework is in contact with the main seal, the dynamic seal surface is transferred to the outer surface of the inner bushing, so that the requirement for the surface roughness of the oil injector or spark plug seal shaft is lowered.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic cross-sectional structure of the present invention;
FIG. 2 is a schematic view of the spring lip of the present invention;
fig. 3 is a schematic structural view of the spring lip of the present invention at the top.
In the figure: 1. the oil sprayer comprises a main seal, 2, an outer framework, 3, an annular spring ring, 4, an inner framework, 5, an inner bushing, 6, an oil sprayer sleeve, 7 and a shell.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a combined spark plug and oil sprayer pipe oil blanket, includes main seal 1, the outside end of main seal 1 is embedded to have exoskeleton 2, 1 inboard embedded ring spring 3 of main seal, 1 inboard cup jointed the inner frame 4 of main seal, 4 inboard fixedly connected with neck bush 5 of inner frame, 5 inboard interference connections of neck bush have oil sprayer sleeve pipe 6, 1 outside interference connections of main seal has casing 7.
The main seal 1 is annular, the inner side spring lip of the main seal 1 can face upwards or downwards, the inner side face and the outer side face of the section of the main seal 1 are wavy, the use of spark plugs or oil injection pipes of different specifications and models is facilitated, the contact area between the main seal 1 and the outer side of the outer framework 2 is reduced, the friction force is increased, the falling-off is prevented, and meanwhile, the contact area between the main seal 1 and the shell 7 is reduced, the friction force is increased, and the interference connection strength between the shell 7 and the main seal 1 is enhanced; the outer framework 2 is annular, and the section of the outer framework 2 is L-shaped, so that the structural strength of the main seal 1 is increased; the inner framework 4 is in a hollow cylindrical shape, and the section of the inner framework 4 is in a step shape, so that the inner framework is better attached to the outer surface of a spark plug (an oil injection pipe) to increase the sealing property; the upper part and the lower part of the inner side of the inner lining 5 are both wavy, and the friction force between the inner lining and the oil sprayer sleeve 6 is increased by reducing the contact area; the shell 7 is in a hollow column shape, the section of the shell 7 is L-shaped, the inner diameter of the lower portion of the shell 7 is smaller than that of the upper portion, the length of the outer diameter of the main seal 1 is larger than that of the minimum inner diameter of the shell 7, and the main seal 1 is prevented from moving downwards.
The working principle is as follows: when the combined spark plug and oil injector pipe oil seal is used, the inner skeleton 4 is sleeved with the inner bushing 5, the inner bushing 5 is connected to the outer side of the oil injector sleeve 6 in an interference mode, the main seal 1 is connected to the inner cavity of the shell 2 in an interference mode, then the inner skeleton 4 is sleeved in the inner ring of the main seal 1 in a handheld mode, the oil injector sleeve 6 is shrunk due to the reset of the annular spring 3, the static seal is formed between the structure of the inner bushing 5 and the surface of the oil injector sleeve 6, the dynamic seal surface is transferred to the outer surface of the inner bushing 5, and therefore the requirement for the surface roughness of the oil injector sleeve 6 is lowered. Through the combined sealing structure of the main seal 1, the outer framework 2, the annular spring 3, the inner bushing 5 and the like, the sealing failure caused by the damage of the turning lip during the installation of the main seal lip is avoided.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A combined spark plug and injector tube oil seal, comprising a main seal (1), characterized in that: the outer side end of the main seal (1) is embedded with an outer skeleton (2), the inner side of the main seal (1) is embedded with a ring-shaped spring ring (3), the inner skeleton (4) is sleeved on the inner side of the main seal (1), an inner bushing (5) is fixedly connected with the inner side of the inner skeleton (4), an oil sprayer sleeve (6) is connected with the inner side of the inner bushing (5) in an interference mode, and a shell (7) is connected with the outer side of the main seal (1) in an interference mode.
2. The combination spark plug and injector tube oil seal of claim 1, wherein: the main seal (1) is annular, the direction of an inner spring lip of the main seal (1) can be upward or downward, and the inner side surface and the outer side surface of the section of the main seal (1) are wavy.
3. The combination spark plug and injector tube oil seal of claim 1, wherein: the outer framework (2) is annular, and the section of the outer framework (2) is L-shaped.
4. The combination spark plug and injector tube oil seal of claim 1, wherein: the inner framework (4) is in a hollow column shape, and the section of the inner framework (4) is in a step shape.
5. The combination spark plug and injector tube oil seal of claim 1, wherein: the upper part and the lower part of the inner side of the inner lining (5) are both wavy.
6. The combination spark plug and injector tube oil seal of claim 1, wherein: the shell (7) is in a hollow column shape, the section of the shell (7) is L-shaped, the inner diameter of the lower portion of the shell (7) is smaller than that of the upper portion, and the length of the outer diameter of the main seal (1) is larger than that of the minimum inner diameter of the shell (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021466753.9U CN213063779U (en) | 2020-07-23 | 2020-07-23 | Combined oil seal for spark plug and oil injector pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021466753.9U CN213063779U (en) | 2020-07-23 | 2020-07-23 | Combined oil seal for spark plug and oil injector pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213063779U true CN213063779U (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021466753.9U Active CN213063779U (en) | 2020-07-23 | 2020-07-23 | Combined oil seal for spark plug and oil injector pipe |
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| CN (1) | CN213063779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236780A (en) * | 2021-06-04 | 2021-08-10 | 一汽解放汽车有限公司 | Engine fuel injector sealing structure |
-
2020
- 2020-07-23 CN CN202021466753.9U patent/CN213063779U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236780A (en) * | 2021-06-04 | 2021-08-10 | 一汽解放汽车有限公司 | Engine fuel injector sealing structure |
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