Coil structure

1. A coil structure comprising a first winding portion and a second winding portion disposed so as to overlap each other with winding axes substantially parallel to each other, wherein

the first winding portion and the second winding portion have regions overlapping each other when viewed from a winding axis direction, and

the second winding portion has a rising portion that extends perpendicular to or at an angle with respect to the first winding portion,

wherein the first winding portion has a base facing portion that faces the second winding portion and extends between side end portions of the first winding portion in a direction perpendicular to the winding axis of the first winding portion, with a width in the direction perpendicular to the winding axis of the first winding portion that is greater than a height of the first winding portion in a direction parallel to the winding axis, and

wherein, when the coil structure is viewed from the winding axis direction, for the regions overlapping each other when viewed from the winding axis direction, the rising portion is located within outer edges of the first winding portion, and

the rising portion extends away from the first winding portion with respect to a portion of the second winding portion that faces the first winding portion.

2. The coil structure according to claim 1 , wherein the rising portion extends in parallel to the winding axis direction.

3. The coil structure according to claim 1 , comprising two units of the second winding portion, wherein

the two second winding portions have winding axes substantially parallel to each other,

one of the second winding portions is disposed on an inner peripheral side of the other second winding portion,

in the second winding portion disposed on the inner peripheral side, the rising portion is provided in a side end portion on an inner peripheral side of a conductor constituting the second winding portion, and

in the second winding portion disposed on an outer peripheral side, the rising portion is provided in a side end portion on an outer peripheral side of a conductor constituting the second winding portion.

4. The coil structure according to claim 3 , wherein the first winding portion and the two second winding portions are connected in series in any order.

5. The coil structure according to claim 1 , wherein the second winding portion has a facing portion, and the facing portion is perpendicular to the rising portion.

6. The coil structure according to claim 1 , wherein the rising portion is perpendicular to the first winding portion.

7. A coil structure comprising a first winding portion and a second winding portion disposed so as to overlap each other with winding axes substantially parallel to each other, wherein

the first winding portion and the second winding portion have regions overlapping each other when viewed from a winding axis direction, and

the second winding portion has a rising portion that extends at an angle with respect to the first winding portion,

wherein the first winding portion has a base facing portion that faces the second winding portion and extends between side end portions of the first winding portion in a direction perpendicular to the winding axis of the first winding portion, with a width in the direction perpendicular to the winding axis of the first winding portion that is greater than a height of the first winding portion in a direction parallel to the winding axis, and

wherein, when the coil structure is viewed from the winding axis direction, for the regions overlapping each other when viewed from the winding axis direction, the rising portion is located within outer edges of the first winding portion, and

the rising portion, when viewed in a cross-sectional view, has a V-shape, with a vertex of the V-shape pointed towards the first winding portion.