| 摘要 |
PURPOSE: A plug is provided to make the inner space of a connection fixture of a power outlet airtight from the outside by an extension sealing plate. CONSTITUTION: A plug body(30) is inserted into a connection fixture(11) of a power outlet(10). A pair of electrode pins(35) are inserted into an insertion hole(12) of the power outlet. An extension sealing plate(31) is integrated with the plug body. The extension sealing plate protrudes from a circumference portion toward the radial direction of the plug body. The extension sealing plate covers a circumference portion of an inlet of the connection fixture or is closely attached to an inner circumference of the connection fixture. The inner space of the connection fixture is sealed from the outside by the extension sealing plate.
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