Pressure-welding structure, terminal-attached electric wire, and manufacturing method for terminal-attached electric wire

A terminal-attached electric wire, comprising:

• an electric wire including a core wire that is composed of element wires and a covering that covers the core wire except for a core-wire exposed portion in which the core wire is exposed;
• and
• a terminal fitting including at least one pair of pressure-welding pieces, the at least one pair of pressure-welding pieces each including a core wire pressure-welding section in which pressure-welding end surfaces are disposed facing each other at a distance, the terminal fitting having the core-wire exposed portion press-fitted between the pressure-welding end surfaces in each of the at least one pair of pressure-welding pieces, wherein
• the core wire pressure-welding section is formed as a section that brings all of the element wires in the core wire exposed portion, between the pressure-welding end surfaces, into contact with either of the pressure-welding end surfaces while being in an aligned state.

A terminal-attached electric wire manufacturing method comprising:

• attaching a core-wire exposed portion in an electric wire to a terminal fitting, the core-wire exposed portion being a portion in which a core wire composed of a plurality of element wires is exposed, the terminal fitting including at least one pair of pressure-welding pieces, the at least one pair of pressure-welding pieces each including a core wire pressure-welding section in which pressure-welding end surfaces are disposed facing each other at a distance, the at least one pair of pressure-welding pieces each including a core wire aligning section in which aligning end surfaces are disposed facing each other at a distance that is larger than the distance at which the pressure-welding end surfaces are disposed, wherein
• the attaching a core-wire exposed portion comprises:
• inserting, while aligning all of the element wires in the core-wire exposed portion between the aligning end surfaces, and then, between the aligning end surfaces, moving all of the element wires is the core-wire exposed portion toward the core wire pressure-welding section while being kept in an aligned state entered by the element wires at the insertion, and
• press-fitting, between the pressure-welding end surfaces, the core-wire exposed portion that has passed through the core wire aligning section, and bringing all of the element wires in the core-wire exposed portion, between the pressure-welding end surfaces, into contact with either of the pressure-welding end surfaces while being in an aligned state.