| 摘要 |
PURPOSE:To prevent a center core from falling and to facilitate assembly by linking the center core arranged in a gap to a coil bobbin in one body. CONSTITUTION:On the flank of one end part of a coil bobbin 2, a projecting part 9 is provided, and one flank of the projecting part 9 is set in the same plane with the end surface of the flange 2a of the coil bobbin 2. At both the end parts of the projection part 9, cut parts 9a and 9a are formed on the side of the flange 2. The center core 5 is fitted to the bobbin 2 by pressing its cut part 5a in the cut parts 9a and 9a of the bobbin 2. An annular core 1 extends to one side of a gap 6 by bending one arm 1a nearly in an L shape, and the other arm 1b is linear. The bobbin 2 wound with a coil 3 is fitted only by being fitted in the arm 1b. |
