沧州盛世伟业汽车配件有限公司

轮胎气门嘴的气密性解析

轮胎气门嘴的作用是作为轮胎充气的接口及放气的阀门,并保持所充空气不外泄;
同时也是供检查轮胎气压的装置。这个部件非常小,但却关系到汽车的行驶安全。那么气门嘴是通过哪些途径来确保轮胎的气密性的呢?下面我们一一讲述。
一、气门芯的三重气密性保证
气门芯是气门嘴里面核心组件之一,通过气门芯我们可以方便的实现轮胎充放气。气门芯的三重气密性保证如下图:

二、气门帽的双重气密性保证
气门帽分塑料帽和金属帽,是通过螺牙与金属嘴杆拧紧密封,同时拧紧状态气门嘴金属嘴杆与气门帽底部的密封垫片能紧密贴合,实现防尘与气密的双重功能。


三、气门嘴底座与轮辋孔密封
分两种情况,橡胶气门嘴底座是通过卡扣式拉入,从而保证橡胶底座与轮辋孔的紧密贴合。

金属气门嘴底座是通过拧紧螺母,使金属气门嘴底座与轮辋孔紧密贴合,从而保证轮胎的气密性。如下图所示:

气门嘴产品本身结构上的多重气密性保证,当然我们在生产气门嘴的过程中,产品的材质以及加工精度,都会直接影响气门嘴的气密性,加强对气门嘴产品严格的100%气密性检测才是不可或缺的步骤。

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