Patent ID: 8578768
Filing Date: 2013-11-12
Classification: B60C

Abstract:
1. A tire valve mounted on an electronic box of a tire pressure monitoring system for automobile comprises a valve metal body with an air introducing and discharging hole, and an elastic body around the valve metal body, wherein the metal body has an external threaded stem for connecting with the electronic box of the tire pressure monitoring system at the end, with the electronic box of the tire pressure monitoring system mounted on the external threaded stem and the air introducing and discharging hole placed on the upside of the external threaded stem, wherein said metal body has a first cylindrical portion corresponding to a rim opening, an annular flange to enlarge retreating force for the valve above the first cylindrical portion, and an lower annular flange corresponding to the lower end of the elastic body under the cylindrical portion; and said elastic body has a first cylindrical elastic portion around the first cylindrical portion, a tapered portion around the annular flange to enlarge retreating force, with the lower end of the elastic body placed around the lower annular flange; and the outer diameter of the first cylindrical portion is 5.9˜6.5 mm and the one of the annular flange to enlarge retreating force is 8.6˜9.2 mm with the difference between the outer diameter of annular flange and the first cylindrical portion over 2.7 mm; and the maximum outer diameter of the tapered portion of the elastic body is 13.8˜14.2 mm and the outer diameter of the first cylindrical elastic portion is 13˜13.5 mm.