Method of manufacturing electrical wire connecting structure and electrical wire connecting structure

摘要

In an electrical wire connecting structure and a method of manufacturing the electrical wire connecting structure, a terminal having a tube-shaped portion of 2.0 mm in inner diameter is prepared for an electrical wire having a conductor cross-sectional area of 0.72 to 1.37 mm2, the electrical wire 13 is inserted into an electrical wire insertion port of the tube-shaped portion of the electrical wire, and the tube-shaped portion and the core wire portion of the electrical wire are compressed to be crimp-connected to each other. Furthermore, a terminal having a tube-shaped portion of 3.0 mm in inner diameter is prepared for an electrical wire having a conductor cross-sectional area of 1.22 to 2.65 mm2, the electrical wire is inserted into the electrical wire insertion port of the tube-shaped portion 25 of the electrical wire, and the tube-shaped portion and the core wire portion of the electrical wire are compressed to be crimp-connected to each other.

主权项

1. An electrical wire connecting structure in which a terminal having a tube-shaped portion and a conductor portion of a covered electrical wire are crimped at the tube-shaped portion and the tube-shaped portion has a conductor crimping portion corresponding to the conductor portion, and a cover crimping portion corresponding to a cover portion of the covered electrical wire, wherein the terminal has a closed cylindrical body that is closed from an end portion side opposite to an electrical wire insertion port of the tube-shaped portion except for the electrical wire insertion port by welding end faces of a terminal forming piece to each other to form the tube-shaped portion and closing the end portion side opposite to the electrical wire insertion port of the tube-shaped portion, the tube-shaped portion has an inner diameter ranging from 1.5 to 2.0 mm, the covered electric wire has the conductor portion whose area in cross-section vertical to a longitudinal direction of the covered electrical wire ranges from 0.72 to 1.37 mm2,
wherein the conductor crimping portion has a crimping mark in which a welded portion is crimped in one direction and which is concaved into the conductor portion from the welded portion, and wherein the cover crimping portion has uniform elastic repulsive force over a whole periphery of the cover portion by applying a same pressure to the whole periphery of the cover portion, wherein the tube-shaped portion is a stepped tube having plural tube aperture diameters, and wherein the stepped tube has the plural aperture diameters each of which corresponds to a thickness of a cover portion of the covered electrical wire.