| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a coil device that can be small-sized and is capable of appropriately securing an insulation distance between coils.SOLUTION: The coil device includes: a first bobbin including a first hollow cylinder part 22; a first coil 60 wound around a first outer peripheral wall 22a of the first hollow cylinder part; a second bobbin including a second hollow cylinder part 32 of which the diameter is larger than that of the first hollow cylinder part and in which the first coil is accommodated; a second coil 70 wound around a second outer peripheral wall 32a of the second hollow cylinder part; and a core including axial legs 52a and 52b inserted through the first hollow cylinder part. The first bobbin includes a ring-shaped flange 24 protruding from the first outer peripheral wall in an outer diameter direction in an end portion at a second direction side. The second bobbin includes a ring-shaped inner edge 34 disposed at a second direction side, protruding from a second inner peripheral wall 32b in an inner diameter direction and formed with a through hole that the axial legs penetrate. In the flange, grooves 24a and 24b are formed which are continued in a circumferential direction so as to face the inner edge and in the inner edge, protrusions 34a and 34b are formed which are fitted into the grooves.</p> |
