| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas bomb hole-opening device which gunpowder administrative regulations are not applied to because of usage of an agent constituted by non-gunpowder type composition, and expands an inflation unit of a life jacket etc. quickly in a stable time.SOLUTION: A piston 30 comprises a pin part which comprises a gas ejection passage and opens a hole in a sealing plate 7 and an O-ring fitting part to which an O-ring 38 adhered to the inner wall of a piston guide hole 25 is fitted. Before operation of a gas generating unit 40, the pin part is positioned in front of a sheet 29 and the O-ring fitting part is positioned at gas generating unit side of a gas relief hole 26 in the piston. After operation of the gas generating unit, the piston is pushed out to the gas bomb 5 side by gas pressure due to combustion of a gas-generating agent, the pin part stabs the sheet and the sealing plate to reach into the gas bomb, gas is ejected from a gas ejecting hole 24 through the gas ejecting passage to expand an inflation unit, and the O-ring fitting part is moved to the gas bomb side of the gas relief hole to discharge the remained pressure through the gas relief hole. |
