| 摘要 |
PURPOSE:To evade magnetic work in welding of a reed switch, etc., by bonding a ferromagnetic body to each external surface that forms the current feed weld zone of a welder and by shielding a unidirectional magnetic field. CONSTITUTION:To the external surface of upper supporter 7, conductive spring 6, substrate 5, lower supporter 8, electrode rest 9, etc., that form current feed weld zone 2 of a resistance welder, ferromagnetic body A such as iron and permalloy is bonded. In this constitution, magnetic flux generated with welding current is effectively focused by ferromagnetic body A and a magnetic field, particularly, in the vertical direction is shield. Therefore, the magnetic field at the weld operation part composed of upper and lower electrodes 3 and 4 decreases in intensity and a member working magnetically, such as a reed switch, can be welded excellently. |
