| 摘要 |
PURPOSE: An automatic switching valve is provided to prevent waste of gas, and to check flow direction of high pressure gas simply by connecting a gas storage container to the other gas storage container timely and safely. CONSTITUTION: An automatic switching valve comprises a housing member(10) having a first gas inlet, a second gas inlet, a gas outlet intersecting two gas inlets and an internal space, a valve body(20) installed in the gas inlet of the housing member and moved horizontally in applying high pressure gas, a bellows member(30) embedded in the housing member, contracted and moved up in applying high pressure gas from the gas inlets and moved down by restoring force, a vertical moving shaft member(40) combined with the bellows member, moved up and down in contracting and expanding the bellows member and placed between the gas inlets, a cam contact projection(50) protruded in the surface of the vertical moving shaft member, and a cam member(60) combined with the cam contact projection, contacted to the valve body and inclined to flow gas from the first or second gas inlet in fitting the cam contact projection to the semi-arc.
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