| 摘要 |
PROBLEM TO BE SOLVED: To reduce size while ensuring a sealing property.SOLUTION: A coil device includes: a mold coil 10 made by molding a synthetic resinous outer sheath 20 to a coil 11 wound with a winding 13 around a bobbin 12; and a yoke 40 to which the mold coil 10 is fitted from one surface side and having an annular groove shape. The outer sheath 20 is equipped with only an outer peripheral portion 21 for covering an outer peripheral surface of the coil 11, and a side surface portion 23 for covering a side surface of a fitting direction rear side in the coil 11. An outer seal ring 30 is interposed between the outer peripheral portion 21 of the outer sheath 20 and an outer peripheral wall 42 of the yoke 40, and an inner seal ring 32 is interposed between an inner peripheral edge of the side surface portion 23 of the outer sheath 20 and an inner peripheral wall 46 of the yoke 40. |
