Electric wire holding structure and electric wire holding method
An electric wire holding structure includes a plurality of electric wires each including a conductive part provided with a plurality of core wires and an insulating part covering the conductive part. The conductive part includes a rectangular conductive part which is formed at an end of the conductive part to have a rectangular outer shape in a section perpendicular to an extending direction of the electric wires. The rectangular conductive parts of the respective electric wires are bonded together by welding with ultrasonic vibration. The rectangular conductive parts of a plurality of the electric wires are piled in a brick laying manner to be bonded by welding.
1. An electric wire holding structure comprising:
a plurality of electric wires each including a conductive part provided with a plurality of core wires and an insulating part covering the conductive part,
wherein the conductive part includes a rectangular conductive part which is formed at an end of the conductive part to have a rectangular outer shape in a section perpendicular to an extending direction of the electric wires and wherein each of the rectangular conductive parts includes the plurality of core wires, and each of the rectangular conductive parts includes an upper face, a bottom face, and a pair of side faces connecting the upper face to the bottom face,
the rectangular conductive parts of the respective electric wires are bonded together by welding with ultrasonic vibration, and
the rectangular conductive parts of a plurality of the electric wires are piled in a brick laying manner to be bonded by welding so that the rectangular conductive parts are staggered in a piling direction such that a first bonding part is formed between respective side faces of a first pair of adjacent rectangular conductive parts and a second bonding part is formed between the one of the bottom face and the upper face of a third rectangular conductive part and the other of the bottom face and the upper face of the pair of adjacent conductive parts, and the second bonding part is arranged across the first bonding part.
2. An electric wire holding structure according to claim 1 , wherein the rectangular conductive parts have the same thickness in the piling direction.
3. An electric wire holding structure according to claim 1 , wherein the rectangular conductive parts have a rectangular outer shape in the section, and a direction of a shorter side of the section is set to be the piling direction.
4. An electric wire holding structure according to claim 1 , wherein the rectangular conductive parts have varied widths in a direction perpendicular to the piling direction.
5. An electric wire holding structure according to claim 1 , wherein the rectangular conductive parts each have a rectangular cross-section shape defined by a first pair of sides that is longer than a second pair of sides, the first pair of sides being parallel to the piling direction.
6. An electric wire holding structure according to claim 1 , wherein gaps disposed between rectangular conductive parts parallel to the piling direction are misaligned in adjacent rows of rectangular conductive parts.
7. An electric wire holding method in which a plurality of electric wires each including a conductive part provided with a plurality of core wires and an insulating part covering the conductive part are provided, the conductive part comprising a rectangular conductive part at an end thereof so as to have a rectangular outer shape in a section perpendicular to an extending direction of the electric wires, and the rectangular conductive parts of a plurality of the electric wires are bonded together by welding with ultrasonic vibration, the method comprising:
piling the rectangular conductive parts of a plurality of the electric wires in a brick laying manner so that the rectangular conductive parts are staggered in a piling direction to define a brick piled body, and
subsequently, welding and bonding by applying the ultrasonic vibration to the rectangular conductive parts of the brick piled body thereby to bond the rectangular conductive parts together by welding, wherein each of the rectangular conductive parts includes the plurality of core wires.
8. An electric wire holding method according to claim 7 , wherein each of the rectangular conductive parts has a rectangular outer shape in the section, and
in the piling step, a direction of a shorter side of the section of the rectangular conductive part is set to be the piling direction.
9. An electric wire holding method according to claim 7 , wherein, in the bonding and welding step, the ultrasonic vibration which is parallel to the piling direction of the rectangular conductive parts is applied.
10. An electric wire holding method according to claim 7 , wherein each of the rectangular conductive parts has a rectangular cross-section shape defined by a first pair of sides that is longer than a second pair of sides, and
in the piling step, the first pair of sides being parallel to the piling direction.
11. An electric wire holding method according to claim 7 , wherein in the piling step, gaps disposed between rectangular conductive parts parallel to the piling direction are misaligned in adjacent rows of rectangular conductive parts.