Ultrasonic welding of covered wires for e.g. to connect a shield wire with a ground wire

摘要

A connecting structure comprising an upper resin tip (13) and a lower resin tip (14) with an electrical connecting part. Formed on the respective butt faces of the upper and lower resin tips are wire receiving grooves (13p,14p) with at least one recess (13c) for receiving molten resin. A damming part (13a) for checking and preventing leakage of the molten resin is provided outside the recess of the upper resin tip. The shield wire (1) and ground wire (2) are arranged so that they cross each other at the electrical connecting part. After interposing the interlapping portions of the wires between the upper resin tip (13) and the lower resin tip (14), the portions are then subjected to an ultrasonic oscillation by the ultrasonic horn (7) and an anvil (8), while compressing the upper and lower resin tips from the outside. Consequently, both the outside rind (1d) of the shield wire and the outside rind (2b) of the ground wire are molten for elimination, so that a braided wire (1c) of the shield conductor, comes into electrical contact with core lines (2a) of the ground wire. Simultaneously, the upper and lower resin tips are mutually welded to each other thereby sealing up the surroundings of the connecting part. An Independent claim is included for a method of producing a connecting structure for covered wires.