Sensor cavity packaging structure

The utility model discloses a sensor cavity packaging structure which comprises an upper shell and a lower shell which are assembled into a cavity, a through hole communicated with the interior of thecavity is formed in the left end of the lower shell, an elastic body in interference fit with the through hole is arranged in the through hole, and the left end face of the elastic body inserted intothe through hole is flush with the left end face of the lower shell. An inner hole communicated with the interior of the cavity is formed in the elastic body, a sensor, a circuit board and a wire which are welded together are arranged in the cavity, the circuit board is fixed on the lower shell, the wire penetrates through the inner hole of the elastic body and extends out of the cavity, and thewire is in interference fit with the inner hole of the elastic body. According to the utility model, the sensor packaging cavity and the main cavity are isolated, so that gas cannot enter the main cavity, the purpose of origina