| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a welded structure by a laser beam welding which is welded by a low output laser beam irradiation. SOLUTION: A projecting part 22 is formed as a protruding part of a butted body by butting a bus-bar 10 against the end part of a male terminal 20. The projecting part 22 is a bar-shaped projection whose cross section is smaller than that of the main body 21 of the male terminal 20, and has a form whose thermal capacity is small. The projecting part 22 is irradiated from its end part with a low output continuous pulse laser beam. The projecting part 22, which has a form whose thermal capacity is small, is fused by being irradiated with a low output laser beam even when the material of the projecting part has a low absorption efficiency of the laser beam or a high heat conductivity, and the male terminal 20 and the bus-bar 10 can be welded together.</p> |
