CN203463161U - Valve oil seal easy to mount and hard to demount and applied to turbo-charging and cylinder direct injection engine - Google Patents
Valve oil seal easy to mount and hard to demount and applied to turbo-charging and cylinder direct injection engine Download PDFInfo
- Publication number
- CN203463161U CN203463161U CN201320581077.3U CN201320581077U CN203463161U CN 203463161 U CN203463161 U CN 203463161U CN 201320581077 U CN201320581077 U CN 201320581077U CN 203463161 U CN203463161 U CN 203463161U
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- oil seal
- valve oil
- valve
- rubber body
- right angle
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Abstract
The utility model relates to a valve oil seal easy to mount and hard to demount and applied to a turbo-charging and cylinder direct injection engine. The valve oil seal comprises a metal framework and a rubber body, wherein the rubber body and the metal framework are integrally combined through a vulcanization forming die and technology. A spring is sleeved outside the upper part of the rubber body; the inner side wall of the rubber body is an oil seal inner wall; the oil seal inner wall is in interference fit with a valve guide pipe; an inner cline type right-angled waveform bulge loop is arranged on the bulge loop; the included angle of the right-angle side of the inner cline type right-angled waveform and the axial line of the valve oil seal is 90 degrees; the included angle of the bevel edge of the inner cline type right-angled waveform and the axial line of the valve oil seal is 50 to 55 degrees. Through the arrangement of the inner cline type right-angled waveform bulge loop structure, which is easy to assembly and hard to pull out, on the oil seal inner wall , not only is the pressure assembling force ensured to be less than 250 N, but also the technical indicator that the pulling out force is larger than 60 N is ensured.
Description
Technical field
The utility model relates to a kind of valve oil seal, and especially a kind of easy dress difficulty that is applied to turbosupercharging and in-cylinder direct fuel-injection engine is unloaded valve oil seal.
Background technique
The place that the valve oil seal inwall of conventional turbine supercharging and in-cylinder direct fuel-injection engine coordinates with valve guide bushing is wavy shaped configuration, its pressing-in force can meet the technical order of 250N max, but pull-out force can not meet the technical order of 60N min, often only has 30～40N.Pull-out force less than normal tend to cause valve oil seal on line assembly process come off, or in the course of the work because excessive working pressure (moment can reach 10bar) causes seal failure.Also there are at present some oil sealings in order to improve pull-out force, the place that valve oil seal inwall is coordinated with valve guide bushing is designed to straight wall shape structure, although can make pull-out force reach standard-required, also improved pressing-in force simultaneously, make valve oil seal occur press-fiting difficulty, press-fit the hidden danger such as not in place.The valve oil seal of wavy shaped configuration and straight wall shape structure as shown in Figure 1 and Figure 2.
Summary of the invention
The purpose of this utility model is to provide a kind of easy dress difficulty that is applied to turbosupercharging and in-cylinder direct fuel-injection engine to unload valve oil seal, the interior wall construction coordinating with valve guide bushing by optimizing valve oil seal, both guarantee pressure assembling force < 250N, guaranteed again pull-out force > 60N.Meanwhile, have more high voltage bearing function, meet the harsh operating mode of the high malleation of turbosupercharged engine.Filled up the blank that valve oil seal pressure assembling force and pull-out force can not meet the demands simultaneously.
The utility model, comprise metal frame and rubber body, rubber body is combined as a whole by curing forming mold and technique and metal frame, top in rubber body, overcoat has spring, and the madial wall of rubber body is oil sealing inwall, oil sealing inwall and valve guide bushing interference fit, on described oil sealing inwall, be provided with interior inclined right angle waveform bulge loop.
The utility model, the angle of the right angle side of described interior inclined right angle waveform and the axis of valve oil seal is 90 °, the angle of the hypotenuse of described interior inclined right angle waveform and the axis of valve oil seal is 50 °～55 °.Spacing, the quantity of described bulge loop right angle waveform are determined by the length of the conduit coordinating.The top of described interior inclined right angle waveform is arc round angle.
The utility model, described oil sealing inwall and valve guide bushing value of interference fit are 0.1～0.3mm.
The utility model, during assembling, the inclined-plane A that fitting surface is rectangular wave, plays leading role, and resistance reduces, and meets the technical order of 250N max; During pull-off, fitting surface is right angle faces B directly, plays the effect that increases resistance, meets the technical order of 60N min, avoids when engine operation pressure moment reaches 10bar the working position seal failure of valve oil seal static seal.
The utility model, due on described oil sealing inwall, is provided with interior inclined right angle waveform bulge loop structure, this kind of structure, is easy to assembling, is difficult to pull-off, both guarantee pressure assembling force < 250N, guaranteed again the technical order of pull-out force > 60N.Can reduce the input power of assembly equipment, reduce energy consumption; Meanwhile, in assembling, during valve, valve oil seal departs from valve guide bushing, has also guaranteed that under huge surge pressure of when turbosupercharging moment, valve does not depart from valve guide bushing.
Accompanying drawing explanation
Fig. 1 is that inwall is the valve oil seal structure sectional drawing of wavy shaped configuration, and Fig. 2 is that inwall is the valve oil seal structure sectional drawing of straight wall shape structure, and Fig. 3 is the utility model embodiment's section of structure, the Q portion enlarged view that Fig. 4 is Fig. 3.
In figure, 10, rubber body 11, oil sealing inwall 12, interior inclined right angle waveform bulge loop A, the hypotenuse B of interior inclined right angle waveform be, right angle side 20, metal frame 30, the spring of interior inclined right angle waveform.
Embodiment
With reference to Fig. 3, a kind of easy dress difficulty that is applied to turbosupercharging and in-cylinder direct fuel-injection engine is unloaded valve oil seal, comprise metal frame 20 and rubber body 10, rubber body 10 is combined as a whole by curing forming mold and technique and metal frame 20, on the top of rubber body 10, overcoat has spring 30, the madial wall of rubber body 10 is oil sealing inwall 11, oil sealing inwall 11 and valve guide bushing interference fit, and value of interference fit is 0.1～0.3mm, on described oil sealing inwall 11, be provided with interior inclined right angle waveform bulge loop 12.The angle of the right angle side B of described interior inclined right angle waveform and the axis of valve oil seal is 90 °, and the angle of the hypotenuse A of described interior inclined right angle waveform and the axis of valve oil seal is 50 °～55 °.The top of described interior inclined right angle waveform is arc round angle.
The utility model, in assembly process, valve guide bushing and valve oil seal inwall what coordinate is A face, the angle of A face and Vertical direction is 50 °～55 °, has now guaranteed to press-fit leading role, has also reduced pressure assembling force.After assembling, valve oil seal inner diameter and valve guide bushing interference fit form static seal face.The length of the conduit that the corrugated quantity basis in right angle coordinates with it and determine (designing requirement is at least 4 rectangular wave shape waves), the corrugated quantity in right angle is the quantity of sealing surface, and the valve oil seal of multi-sealed can be applied on motor that higher, the reciprocal frequency of pressure is larger.In pull-off process, valve guide bushing and valve oil seal inwall what coordinate is B face, the angle of B face and Vertical direction is 90 °, has now increased pull-out force.
Claims (4)
1. an easy dress difficulty that is applied to turbosupercharging and in-cylinder direct fuel-injection engine is unloaded valve oil seal, comprise metal frame (20) and rubber body (10), rubber body (10) is combined as a whole by curing forming mold and technique and metal frame (20), top in rubber body (10), overcoat has spring (30), the madial wall of rubber body (10) is oil sealing inwall (11), oil sealing inwall (11) and valve guide bushing interference fit, it is characterized in that: upper at described oil sealing inwall (11), be provided with interior inclined right angle waveform bulge loop (12).
2. valve oil seal according to claim 1, it is characterized in that: the right angle side (B) of described interior inclined right angle waveform is 90 ° with the angle of the axis of valve oil seal, the hypotenuse (A) of described interior inclined right angle waveform is 50 °～55 ° with the angle of the axis of valve oil seal.
3. valve oil seal according to claim 1, is characterized in that: described oil sealing inwall (11) is 0.1～0.3mm with valve guide bushing value of interference fit.
4. valve oil seal according to claim 1, is characterized in that: the top of described interior inclined right angle waveform is arc round angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581077.3U CN203463161U (en) | 2013-09-18 | 2013-09-18 | Valve oil seal easy to mount and hard to demount and applied to turbo-charging and cylinder direct injection engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581077.3U CN203463161U (en) | 2013-09-18 | 2013-09-18 | Valve oil seal easy to mount and hard to demount and applied to turbo-charging and cylinder direct injection engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463161U true CN203463161U (en) | 2014-03-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320581077.3U Expired - Lifetime CN203463161U (en) | 2013-09-18 | 2013-09-18 | Valve oil seal easy to mount and hard to demount and applied to turbo-charging and cylinder direct injection engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463161U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564209A (en) * | 2015-01-13 | 2015-04-29 | 十堰东森汽车密封件有限公司 | Natural gas valve oil seal for heavy duty truck |
| CN108368938A (en) * | 2015-12-08 | 2018-08-03 | Nok株式会社 | Valve oil seal |
-
2013
- 2013-09-18 CN CN201320581077.3U patent/CN203463161U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564209A (en) * | 2015-01-13 | 2015-04-29 | 十堰东森汽车密封件有限公司 | Natural gas valve oil seal for heavy duty truck |
| CN108368938A (en) * | 2015-12-08 | 2018-08-03 | Nok株式会社 | Valve oil seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: To the north of Guangdong city of Jieyang province Jieyang 522000 industrial transfer Industrial Park Road, Chaoyang West Songtao Street Patentee after: GUANGDONG TIANCHENG SEALS CO.,LTD. Address before: East Rong Dong Industrial Zone 522000 Guangdong Fenglin District of Rongcheng city in Jieyang Province Patentee before: JIEYANG TIANCHENG SEAL COMPONENTS Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140305 |