| 摘要 |
PROBLEM TO BE SOLVED: To provide a coil device which materializes downsizing while ensuring a sealing property.SOLUTION: A coil device includes: a mold coil 10 made by molding a synthetic resinous outer sheath 20 on the whole surface around 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. On an inner peripheral surface of the bobbin 12, clipped portions 16 each having a height dimension larger than the thickness of an inner peripheral portion 21 of the outer sheath 20 formed so as to cover the inner peripheral surface of the bobbin 12, and having a projecting part from the inner peripheral portion 21 which can be cut off, are protrusively formed. At fore-and-aft two places in an axial direction across a clipped portion 16C on the inner peripheral portion 21 of the outer sheath 20, seal rings 50 elastically contracted between opposite inner peripheral walls 43 of the yoke 40 are installed. |
