Connecting method of single core electric wire to stranded electric wire
View Patent ↗A connecting method of a single core electric wire to a stranded electric wire which can prevent a contact resistance from increasing is provided. The connecting method includes a tube inserting process that a single core wire and a twisted wire are respectively inserted from openings and of a tubular joint terminal having a single core wire inserting part from an end part to a prescribed position in an interior side and a twisted wire inserting part from the other end part to the single core wire inserting part in the interior side, and a metallic bond process that an end face contacts under pressure with an end face and the single core electric wire is rotated in a twisting direction of the twisted wire to metallically bond the end faces.
1. A connecting method of a single core electric wire to a stranded electric wire by which a single core electric wire having a single core wire covered with an insulating coat part is connected to a stranded electric wire having a twisted wire formed by twisting a plurality of element wires which is covered with an insulating coat part, the connecting method of the single core electric wire to the stranded electric wire including:
a tube inserting process in which the single core wire and the twisted wire are respectively inserted from openings of end parts of a tubular joint terminal having a single core wire inserting part which has an inside diameter larger than a diameter of the single core wire from one end part of the tubular joint terminal to a prescribed position in an interior side in a direction of an axis of the tubular joint terminal, and a twisted wire inserting part which has an inside diameter larger than a diameter of the twisted wire from the other end part to the single core wire inserting part in the interior side in the direction of the axis of the tubular joint terminal; and
a metallic bond process in which an end face of the single core wire is allowed to come into contact under pressure with an end face of the twisted wire, with the single core electric wire being rotated in a twisting direction of the twisted wire, or the stranded electric wire being rotated in an opposite direction to the twisting direction, or the single core electric wire being rotated in the twisting direction and the stranded electric wire is rotated in the opposite direction to the twisting direction, to metallically bond the end face of the single core wire to the end face of the twisted wire.
2. A connecting method of a single core electric wire to a stranded electric wire according to claim 1 , wherein
the tubular joint terminal is an integrally formed tubular member.
3. A connecting method of a single core electric wire to a stranded electric wire according to claim 1 , wherein a terminal caulking process is further included in which the tubular joint terminal is caulked after the metallic bond process.
4. A connecting method of a single core electric wire to a stranded electric wire according to claim 1 , wherein the tubular joint terminal has tapered parts at both end parts which are formed in tapered shapes so as to enlarge an inside diameter outward of the tube from an inner part of the tube in a direction of an axis.