Patent ID: 7361839
Filing Date: 2008-04-22
Classification: B23K,H01R

Abstract:
1. An electromagnetic welding method comprising the steps of: piling a metal plate and an electric wire, comprising a plurality of element wires twisted together, on a coil which generates a magnetic field when a current is applied into the coil, a core wire portion of a central part, spaced from ends of the wire, along an axis direction of the electric wire being exposed, in advance of application of any current into the coil, while core wire portions except the exposed core wire portion are coated with a coating member, the coil and the exposed core wire portion being arranged lined up along a diameter direction of the electric wire; and applying a current into the coil to generate the magnetic field so as to generate an eddy current in both the metal plate and the exposed core wire portion, thereby welding the exposed core wire portion to the metal plate, wherein each element wire of the exposed core wire portion is completely exposed.