TIRE PRESSURE SENSOR ATTACHED TO AN AIR VALVE

A tire pressure sensor attached to an air valve includes a body and two wings. The body has a face located between the two wings. The wings have ridges extending from the face, in a gradually expanding curved arc, to form an enlarged end. The ridges and the face together form a groove therebetween. An air valve includes a tube, a nut and a connector which is connected to one end of the tube. The nut is threaded onto the tube. The connector has end portions extending from two ends thereof. The connecting portion of the connector is engaged with the groove, and the protrusions abut against the inside of the ridges. The nut is rotated to drive the tube, and the connector presses the protrusions to contact against the ridges. This achieves a one-time lock attachment in a single step, offering improved functionality.