Winding structure, coil winding, coil part, and coil winding manufacturing method

A coil winding manufacturing method for forming a coil winding from a flat wire, the method comprising:

• a first winding step comprising winding the flat wire to form a first winding part;
• a part to be connecting wire forming step of comprising forming a part to be connecting wire continuing to the first winding part;
• a second winding step comprising winding the flat wire in a same winding direction as a winding direction of the first winding part to form a second winding part continuing to the part to be connecting wire;
• and
• a connecting wire part forming step comprising forming a connecting wire part from the part to be connecting wire, wherein
• the part to be connecting wire forming step comprises:
• a first feeding step comprising feeding, after the first winding step and before the second winding step, the flat wire farther than a bending part to provide a first fed portion continuing to the first winding part;
• a first bending step comprising performing, at the bending part after the first feeding step, edgewise bending of the flat wire in the same direction as the winding direction of the first winding part to form a first coupling portion continuing to the first winding part at a side opposite to a side where the first winding part and the second winding part face each other;
• a second feeding step of comprising feeding, after the first bending step, the flat wire to provide a second fed portion;
• a second bending step comprising performing, at the bending part after the second feeding step, edgewise bending of the flat wire in the same direction as the winding direction of the first winding part to form an interval defining portion continuing to the first coupling portion and defining an interval between the first winding part and the second winding part;
• and
• a third feeding step comprising feeding, after the second bending step, the flat wire farther than the bending part to provide a third fed portion with a second fed portion continuing to the interval defining portion and the second winding part at the side opposite to the side where the first winding part and the second winding part face each other.