Patent ID: 9057656
Filing Date: 2015-06-16
Classification: G01L

Abstract:
1. An inflation machine comprising a casing, an inflation mechanism, which is received in the casing and is coupled to and driven by a driving device, and a pressure indication device, which is mounted inside the casing, wherein the inflation mechanism comprises an air compartment, the air compartment being provided with at least two outlet openings, which are respectively connected to a first conveyance tube and a second conveyance tube, the first conveyance tube being connected to the pressure indication device, the second conveyance tube being adapted to connect to an object to be inflated, a scale bar being provided outside the pressure indication device, wherein the pressure indication device comprises a hollow tubular body that comprises a tubular wall in which a pressure relief hole is formed and adapted to be in direct communication with the external atmosphere, the hollow tubular body having two ends that are respectively provided with a protection cover and an inlet joint, the protection cover forming a through hole, the inlet joint forming an inlet opening extending outside the hollow tubular body and communicating with the first conveyance tube, the hollow tubular body receiving therein a push block between the protection cover and the inlet joint, the push block being connected to a strip-like plate, the plate having an end extending beyond and exposed outside the through hole of the protection cover, the hollow tubular body receiving therein an elastic element between the protection cover and the push block, the push block and the strip-like plate being movable in the hollow tubular body and along a moving path; and wherein the scale bar is arranged at a fixed position with respect to the hollow tubular body of the pressure indication device to correspond to the moving path of the plate, whereby the push block and the strip-like plate is movable with respect to the scale bar and when the push block is moved in the hollow tubular body, along the moving path, to a predetermined location corresponding to the pressure relief hole, pressure inside the hollow tubular body, which is connected through the first conveyance tube to the air compartment of the inflation mechanism, is allowed to directly release through the pressure relief hole to the external atmosphere.