Patent ID: 7743652

Claim:
A tire pressure detector without the risk of causing a leaky tire, being connected to a tire valve on a tire of a car for detecting tire pressure of the tire, comprising: a base having a forward projected and externally threaded annular wall, an annular limit wall located outside and around the forward projected annular wall, and an annular groove formed between the annular limit wall and the forward projected annular wall; a mating cover having an internally threaded annular wall corresponding to the forward projected and externally threaded annular wall of the base, such that the cover can be tightly screwed to the base with a free end of the annular wall of the cover received in the annular groove; and the cover and the base screwed to each other having an airtight seal ring set therebetween at the screwed portion, so that an airtight space can be defined in and between them; a tire pressure detecting assembly being received in the airtight space; and a valve control assembly being mounted on the base to locate between the base and the cover.