Plastic connector with lock catch structure

The utility model discloses a plastic connector with a lock catch structure, which relates to the field of connector design, and comprises a plastic main body, an OT cold-pressed terminal and a plastic upper cover, a positioning through hole is formed on the plastic main body, the OT cold-pressed terminal is installed in the positioning through hole in a clearance fit manner, a clamping shaft is arranged on the bottom side of the plastic main body, a connecting block is formed between the clamping shaft and the plastic main body, and the OT cold-pressed terminal is arranged on the connecting block. A semi-ring type barb is formed on the bottom side of the plastic upper cover, the clamping shaft is installed at the inner diameter position of the semi-ring type barb in a rotating fit mode, the connecting block and the semi-ring type barb are arranged in a staggered mode, the plastic upper cover covers the inner side face of the plastic main body, an elastic arm is formed on the top side of the plastic upper cov