| 摘要 |
PURPOSE:To obtain a satisfactory adhesive property of a free end edge part of a thin plate and a base plate, and to form a uniform welding state, by curving the thin plate, pressing both the end edge parts against the base plate, and welding by irradiation of a laser beam, when welding one end edge of the thin plate on the base plate. CONSTITUTION:One base plate 3 to be welded is fitted into a receiving groove 2 of a base stand 1, on which a springy thin plate 4 to be welded is placed. The thin plate 4 is positioned by fitting a pin 6 provided on the base stand 1 into a hole 5 of the thin plate 4, and also the thin plate 4 is curved upward in the projecting shape. The thin plate 4 is pressed by pressing parts 8a, 8b on both sides of the lower part of a pressing block 8, and a place around a welding point A of the thin plate 4 and a place around a free end edge part of its opposite side are pressed and fixed by force of a spring plate 9. Subsequently, the thin plate 4 is welded to the base plate 3 by heating the welding part A by a laser beam irradiating device 11. The thin plate 4 does not float up from the base plate 3 as a contact part of a relay switch, and a contact member having a satisfactorily close contact state is obtained. |
