Automobile tire valve assembly

Abstract

The invention provides an automobile tire valve assembly, and belongs to the technical field of automobiles. The problem how to enable a tire to achieve overpressure exhaust and how to effectively ensure the sealing performance of the tire is solved. The valve assembly comprises a base, a shell sleeve, a core rod and a nut. A ventilation cavity is formed inside the shell sleeve; an upper conical sealing cavity and a lower conical sealing cavity are formed above and below the ventilation cavity respectively, the small ends of the upper sealing cavity and the lower sealing cavity are opposite, an upper sealing gasket is in sealing fit with the interior of the upper sealing cavity, an upper vent hole for being communicated with the external world is formed inside the upper sealing gasket, a lower sealing gasket is in sealing fit with the interior of the lower sealing cavity, and a lower vent hole for being communicated with a tire interior air cavity is formed inside the lower sealing gasket; the core rod is provided with an upper sealing part and a lower sealing part, the upper sealing part abuts against the lower end of the upper sealing gasket so that the upper vent hole can be sealed, and the lower sealing part abuts against the upper end of the lower sealing gasket so that the lower vent hole can be sealed. Due to the valve, the running safety of an automobile is ensured well, and the automobile can be more convenient to use.

Description

Technical field [0001] The invention belongs to the technical field of automobiles, and relates to an automobile tire valve assembly. Background technique [0002] The valve is a one-way valve installed on the wheel hub to inflate and deflate the tire. The valves currently used on the market can only perform the function of inflating and sealing tires. When you need to deflate, you need to use a special key to unscrew the air needle or directly press the air valve stem to deflate. In other words, the existing valve cannot automatically open to relieve pressure. If the internal pressure of the tire is too high, the risk of a tire blowout is likely to occur. [0003] For example, when a car is driving at a high speed, the car tire will contact the ground and rotate at a high speed along the ground. In this process, the gas temperature in the car tire will gradually increase due to the friction between the tire and the ground for a long time. At the same time, The gas pressure in t...

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Problems solved by technology

[0005] However, the above-mentioned pressure-regulating run-flat tire valve assembly has the following defects: in order to realize the function of automatic pressure relief, the core body needs to be designed to be movable, that is, a gap needs to appear on the sealing part of the core body in contact with the nozzle body during pressure relief In order to achieve exhaust, and the sealing design at this place should not be too tight, this will lead to sealing problems at the contact between the core and the nozzle in normal conditions, resulting in a decrease in the sealing performance of the tire

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