Safety valve device for ultrahigh pressure inflation and production method

The invention relates to a safety valve device for ultrahigh-pressure inflation in the field of automobile parts, which is characterized in that a valve core assembly is arranged in a safety valve shell, and the safety valve shell comprises an upper half part and a lower half part which are separated by a connecting hole in the middle; the valve element assembly comprises a valve shaft and a sealing ring which is arranged on the valve shaft in a sleeving mode and located on one side of the upper half portion, and the valve element assembly further comprises a flat washer which is arranged on the valve shaft and located on the lower half portion, a spring assembly and a locking shaft. The locking shaft is locked and fixed through a nut arranged on the outer side. According to the novel safety valve, the combined design is adopted, the internal structure of a traditional safety valve is optimized, the novel safety valve is reliable in locking, meanwhile, the novel safety valve has high sealing performance in th