| 摘要 |
PURPOSE: Provided is a valve mechanism which close a fluid reliably while its configuration is simple and alter a flow rate of the fluid passing through the valve mechanism discretionally according to a pressure applied to the fluid. CONSTITUTION: The valve mechanism comprises: a valve seat portion(4) having an upper opening portion and a lower opening portion through both of which a fluid passes; and a valve portion(3) disposed co-axially with the upper opening portion. The valve portion(3) comprises a supporting portion(34) attached at or below the lower opening portion without closing the lower opening portion; a closing portion(32) for closing the upper opening portion, the closing portion(32) having an outer diameter larger than an inner diameter of the upper opening portion; and a connecting portion(33) connecting the closing portion(32) and the supporting portion(34). The closing portion(32) or the connecting portion(33) is resilient and capable of being deformed to open the upper opening portion when a fluid stored inside the container is pressed.
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