| 摘要 |
PROBLEM TO BE SOLVED: To enhance the bonding strength between core wires without requiring a complicated work in the case that two kinds of core wires containing metals different from each other as a main component are bonded by welding, in a junction structure for electric wires.SOLUTION: In a junction structure 1 for electric wires, a copper core wire 21 in a copper electric wire 2 and an aluminum core wire 31 in an aluminum electric wire 3 are bonded with each other. An intervening member 5 is made of a material containing copper as a main component, and surrounds the circumference of the copper core wire 21 in a state contacted with an outer peripheral surface of the copper core wire 21. A first welded part 41 is a part where an outer peripheral surface of the aluminum core wire 31 and an inner peripheral surface of the intervening member 5 are welded. A second welded part 42 is a part where the outer peripheral surface of the copper core wire 21 and an outer peripheral surface of the intervening member 5 are welded. |
