| 摘要 |
PROBLEM TO BE SOLVED: To reduce a stress acted on a weld surface.SOLUTION: A current plate 11 of a current member 10 is held between an upper member 2 and a lower member 3, and is welded against the upper member 2 under vibration weld when the upper member 2 and the lower member 3 are welded under vibration weld. Then, an irregularity engagement part 15 where the current plate 11 and the lower member 3 are engaged to each other along the irregularity engagement surface crossing at a right angle with the weld surface 4 is formed between the current plate 11 and the lower member 3. With this arrangement, when the current plate 11 is apt to be deformed, the current plate 11 and the lower member 3 are in surface contact with each other along the irregularity engagement surface, so that it becomes possible to restrict deformation of the current plate 11. Therefore, the deformation of the current plate 11 is restricted to enable a stress acted on the weld surface 4 due to deformation of the current plate 11 to be decreased relatively. |
