Patent ID: 8235276
Filing Date: 2012-08-07
Classification: B23K,H01R

Abstract:
1. An ultrasonic bonding method of an electric wire comprising: exposing the electric wire in a conductor end made of plural core wires; providing a metallic connection terminal formed by erecting two side walls from a bottom surface; providing a press metal mold separately from the metallic connection terminal; molding the conductor end of the electric wire by the press metal mold, into a cross section having a thickness which tapers along a width direction of the cross section toward at least one of a side positioned in the bottom surface of the connection terminal and a side to which ultrasonic vibration is to be applied; positioning the molded conductor end in the connection terminal; after completion of the molding step, bonding the conductor end to the connection terminal by applying ultrasonic vibration with a pressurization and vibration horn to the conductor end of the electric wire which is positioned on the bottom surface between the two side walls of the connection terminal, wherein, in the bonding step, an entire upper surface of the conductor end is changed from a tapered shape having the thickness to a flat shape.