| 摘要 |
An inductance element having a drum core around which a winding is to be wound and a ring core surrounding a circumference of the drum core, in which projections are provided either on an outer side surface of an upper flange section of the drum core or an inner side surface of the ring core, and recessions are provided in the other side surface to fit with the projections, each of the recession having an inclined plane inclining from the deepest part of the recession toward the outer edge on one side of the recession and having a bilaterally asymmetric cross-sectional shape with respect to a perpendicular line drawn from the deepest part to an opening of the recession viewing from the direction of an upper surface of the ring core.
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