Air tightness analysis of tire valve

The function of the tire valve is to serve as an interface for tyre inflation and a deflation valve, and to keep the filled air from leaking out; it is also a device for checking the tyre pressure. This part is very small, but it is related to the safety of the car. So what are the ways to ensure the air tightness of the tire? Let's talk about them one by one. First, triple air tightness guarantee of valve core The valve core is one of the core components tire valve in the valve mouth. Through the valve core, we can easily achieve tire inflation and deflation. The triple airtightness guarantee of the valve core is as follows:

Second, the double airtightness of the valve cap The valve cap is divided into a plastic cap and a metal cap, and is tightly sealed by a screw tooth and a metal nozzle rod. At the same time, the valve metal nozzle rod and the gasket at the bottom of the valve cap can be closely fitted to achieve the dual functions of dustproofness and airtightness .

Third, the valve base and the rim hole are sealed There are two cases, the rubber valve base is pulled in by snap-in, so that the rubber base and the rim hole are tightly fitted.

The metal valve base is tightly fit the metal valve base and the rim hole by tightening the nut, thereby ensuring the airtightness of the tire. As shown below:

The above is the multiple airtightness guarantees on the structure of the valve product itself. Of course, in the process of producing the valve, the material and processing accuracy of the product will directly affect the airtightness of the valve, and strengthen the valve product. Strict 100% air tightness testing is the most indispensable step.