IMPACT-PROTECTION AND DAMAGE-REDUCTION STRUCTURE WITH TIRE PRESSURE GAUGE FOR AIR VALVE

The invention discloses an anti-impact device for tire pressure gauge with a gas nipple. The tire pressure gauge includes an enclosure and a gas nipple. The enclosure has a concave spherical surface, while the gas nipple has a hollowed tube. The tube includes a gas inlet and a gas outlet, a gimbal joint being disposed at an outer side of the gas outlet along axial direction of the gas nipple, the gimbal joint being connected with the concave spherical surface in universal manner. A weak portion is defined on the end of the gas inlet of the tube, the thickness of the weak portion being smaller than the rest portion of the tube. As such, only the gas nipple is damaged, while the rest components of the tire pressure gauge are kept from being damaged. As a result, to make the entire tire pressure gauge working well, replacement may only be made to the gas nipple together with the gimbal joint. Replacement of the gas nipple results in less cost when compared to replacement of the entire gauge.