| 摘要 |
PURPOSE: A device of an electric outlet is provided to exchange a 4mm¬2 power source contacting unit of a plug with a 4.8mm¬2 power source contacting unit of a plug. CONSTITUTION: A spring(30) having an elasticity is installed at a power source contacting unit(20) in an electric outlet of a power source unit of a circular plug. Tightening functions for contacting the power source contacting unit(20) toward the interior when the power source contacting unit(20) is split by contacting to the power source unit of a circular plug and when the power source unit is extracted are operated. Thus, a 4mm¬2 power source unit of the plug is used. Also, when a 4.8mm¬2 power source unit of the plug is used, the power source unit is returned to 4mm¬2 responding position by the spring(30). Thus, 4mm¬2 power source unit and 4.8mm¬2 power source unit can be used together.
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