Structure of an accurate air pump indicating pressure

Abstract

The present invention relates to an improved structure of an accurate air pump indicating pressure, especially one balancing pressure of tire and that indicated on panel. The present invention consists mainly of a stopping valve, a check valve, and a flowing pressure tube. The stopping valve is found inside the chamber between the air pump and the tire in order to balance tire pressure and moving pressure. The check valve is found at the front part of the air pumping tube in order to control moving pressure; and the flowing pressure tube is found inside the air pumping tube which is made of elastic tubes and springs. Hence, the present invention of an improved structure of an accurate air pump indicating pressure can balance pressure of tire and pressure of panel.

1 . A kind of improved structure of an accurate air pump pressure indicating, mainly consisting of a stopping valve, a check valve and a pressuring tube with the following characteristics: 
 The stopping valve is designed in the chamber between the air pump and the tire and balances pressure coming from both sides to a stable state;    The check valve is designed at the front part of the tube of the air pump and controls air pressure pumped inside;    The flowing pressure tube is designed inside tube of air pump and is made of elastic tubes and thin springs.