| 摘要 |
A connector structure has a second connector fitted to an interior of a cylindrical receiving port of a first connector such that the first and second connectors can be electrically connected together in an inner region of the cylindrical receiving port. A fitting portion of the second connector exhibits a generally square configuration, four corner portions of the square fitting portion are each defined as an arcuate corner portion arranged on an inscribed circle of the cylindrical receiving port and having the same radius of curvature as the inscribed circle, an arcuate surface of each of the four arcuate corner portions is in inscribed relation to an inner peripheral surface of the cylindrical receiving port, and four side portions between adjacent arcuate corner portions are located away from the inner peripheral surface of the cylindrical receiving port.
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