| CPC H01F 27/28 (2013.01) [H01F 17/04 (2013.01); H01F 27/245 (2013.01)] | 19 Claims |
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1. A coil device comprising:
a first core including a first leg;
a second core disposed with a gap between the first leg and the second core and separated from the first core; and
a conductor at least partly disposed between the first core and the second core,
wherein a notch is formed on the conductor at a position corresponding to the gap,
the conductor is an elongated body having an outer surface and an inner surface opposite to the outer surface,
the notch notches the outer surface without penetrating the elongated body from the outer surface to the inner surface,
the conductor includes a conductor side part extending along the first leg, and a mounting part being bent substantially perpendicularly to the conductor side part and extending outward along a bottom of the first leg,
the notch is formed continuously from the conductor side part to the mounting part,
the mounting part is arranged in a notch-shaped side groove formed at an end of the first leg of the first core,
a ratio of a width of the notch in a direction perpendicular to an extending direction of the notch to a width of the conductor in a direction perpendicular to an extending direction of the conductor is 0.3 to 0.5,
the notch-shaped side groove defines opening connecting an interior of the coil device with an exterior of the coil device,
the mounting part is arranged in the opening,
an end surface of the mounting part is exposed through the opening to the exterior of the coil device, and
the ratio remains 0.3 to 0.5 in the opening.
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