CN203547821U - 一种圆角动密封唇结构的气门油封 - Google Patents
一种圆角动密封唇结构的气门油封 Download PDFInfo
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- CN203547821U CN203547821U CN201320804816.0U CN201320804816U CN203547821U CN 203547821 U CN203547821 U CN 203547821U CN 201320804816 U CN201320804816 U CN 201320804816U CN 203547821 U CN203547821 U CN 203547821U
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- oil
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- 210000000088 Lip Anatomy 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 17
- 235000015927 pasta Nutrition 0.000 claims description 8
- 239000011324 bead Substances 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 25
- 239000010705 motor oil Substances 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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Abstract
本实用新型涉及一种圆角动密封唇结构的气门油封。包括金属骨架和橡胶体，橡胶体通过硫化成型模具及工艺与金属骨架结合为一体，在橡胶体的上部，外套有弹簧，橡胶体的下部内侧壁为油封内壁，橡胶体的上部内侧壁为主唇口，主唇口具有圆角结构的油面角α和气面角β，所述α的R值为0.9mm，其圆角圆心距离唇冠距离为0.9mm，气面角β为19°。本实用新型，能有效的解决了传统动密封唇结构在气门下行打开过程中，刮油能力不足，导致机油泄露量过大，机油燃烧，气门与气门导管因积碳卡死等不足。
Description
一种圆角动密封唇结构的气门油封
技术领域
[0001] 本实用新型涉及一种气门油封，尤其是一种圆角动密封唇结构的气门油封。
背景技术
[0002] 传统的气门油封(如图1所示)，其控制机油泄漏量是依靠油面角α和气面角β，α与β的差值越大，在唇口两侧形成的压力差就越大，泄漏量越小，但是泄漏量过小会导致油膜被破坏，造成干摩擦，加速唇口橡胶老化、磨损，从而密封失效。α与β的差值过小，泄漏量越大，机油燃烧，气门与气门导管因积碳卡死，气门无法正常工作。
发明内容
[0003] 本实用新型的目的在于解决以上的技术问题，提供一种圆角动密封唇结构的气门油封，通过优化气门油封动密封唇口的结构，降低了 α与β的差值过大或过小带来的密封失效风险。
[0004] 本实用新型，包括金属骨架和橡胶体，橡胶体通过硫化成型模具及工艺与金属骨架结合为一体，在橡胶体的上部，外套有弹簧，橡胶体的下部内侧壁为油封内壁，橡胶体的上部内侧壁为主唇口，主唇口具有油面角α和气面角β，将所述α角改为圆角结构。
[0005] 本实用新型，所述α的R值为0.9mm，其圆角圆心距离唇冠距离为0.9mm，气面角β 为 19°。
[0006] 本实用新型，具有如下有益效果:
[0007] 1、将动密封唇口油面角α设计为R值为0.9 _的圆角结构，R0.9mm的圆角圆心距离唇冠距离为0.9mm。这一结构优化:(A)、能提高气门下行打开时密封唇向上的刮油力，减少漏油量；(B)、油面角设计为R0.9mm，可以很有效的保护油膜的完整性和连续性；(3)、可降低气门上行关闭时，油面角对气门的阻力，减少不必要的能耗。
[0008] 2、将气面角β设计为19°。该结构设计，气门下行打开时密封唇向上刮油的支承刚度刚好配合油面角R0.9mm的刮油力，控制适当的漏油量。
附图说明
[0009] 图1为传统气门油封的结构示意图；图2为本实用新型实施例的结构示意图；图3为本实用新型实施例的装配结构示意图。
[0010] 图中，1、橡胶体；2、主唇口； 3、弹簧；4、金属骨架；5、油封内壁 6、气门；7、导管。
具体实施方式
[0011] 参照图2，一种圆角动密封唇结构的气门油封，包括金属骨架4和橡胶体1，橡胶体I通过硫化成型模具及工艺与金属骨架4结合为一体，在橡胶体I的上部，外套有弹簧3，橡胶体I的下部内侧壁为油封内壁5，橡胶体I的上部内侧壁为主唇口 2，主唇口 2具有圆角结构的油面角α和气面角β，所述α的R值为0.9mm，其圆角圆心距离唇冠距离为0.9mm，气面角β为19°。
[0012] 参照图3，本实用新型实施例的装配顺序为:首先将气门油封压装到导管7上，气门6穿过导管7，与本实用新型动密封唇口 2形成过盈配合，气门6在工作过程中进行往复运动，与本实用新型动密封唇口 2形成动密封关系，动密封唇口可控制通过气门的机油泄漏量。
Claims (2)
1.一种圆角动密封唇结构的气门油封，包括金属骨架(4)和橡胶体(1)，橡胶体(I)通过硫化成型模具及工艺与金属骨架(4)结合为一体，在橡胶体(I)的上部，外套有弹簧(3)，橡胶体(I)的下部内侧壁为油封内壁(5)，橡胶体(I)的上部内侧壁为主唇口(2)，主唇口(2)具有油面角α和气面角β，其特征在于:所述α为圆角结构。
2.根据权利要求1所述的气门油封，其特征在于:所述α的R值为0.9mm，其圆角圆心距离唇冠距离为0.9mm,气面角β为19°。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104564209A (zh) * | 2015-01-13 | 2015-04-29 | 十堰东森汽车密封件有限公司 | 一种载重车用天然气气门油封 |
| CN108368938A (zh) * | 2015-12-08 | 2018-08-03 | Nok株式会社 | 气门油封 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564209A (zh) * | 2015-01-13 | 2015-04-29 | 十堰东森汽车密封件有限公司 | 一种载重车用天然气气门油封 |
| CN108368938A (zh) * | 2015-12-08 | 2018-08-03 | Nok株式会社 | 气门油封 |
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