| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrical outlet with free plugging-in from any direction, right and left or up and down on the same plane. SOLUTION: Plug blade receiving parts 3a into which a plug blade is inserted are provided for each position, right and left and up and down on the same plane, so that, a plug can be plugged in any direction, right left or up and down on the same plane.
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