| 摘要 |
PROBLEM TO BE SOLVED: To provide a choke coil in which a distance between a coil and an installation object is unsusceptible to an influence of a formation error of a core.SOLUTION: A choke coil comprises: a coil including a wound portion that is formed by winding a winding wire; a columnar inner core that is housed in the wound portion; a bobbin including a cylindrical shape portion that is interposed between the wound portion and the inner core; a cylindrical shape outer core including a rectangular parallelepiped internal space that houses the inner core and the wound portion supported inside and outside the cylindrical shape portion, and forming a closed magnetic circuit together with the inner core; and a radiator layer that is interposed between the wound portion and an installation object, the bobbin including: a pair of flange-shaped portions that are extended from peripheries of both opening portions of the cylindrical shape portion and are interposed between an end face of the wound portion and an inner circumferential face of the outer core; and a base portion that is extended from peripheries of the flange-shaped portions in an axial direction of the cylindrical shape portion, and is interposed between an installation-side end face of the outer core facing the installation object and the installation object.SELECTED DRAWING: Figure 1 |
