| 摘要 |
PURPOSE:To prevent variation of inductance by vibrating etc. by a method wherein a protuberance is provided in the inner periphery of a skylight on the top of a shield-case and an upper projecting section of a bobbin is subjected to engage therewith. CONSTITUTION:A skylight 1a possessing a protuberance 1d in the inner periphery thereof is furnished on the top of a square cylindrical shield-case 1, and an artificial leg 1b and a joggle 1c are furnished at lower portion thereof. A terminal 2 is planted to the undersurface of a terminal plate 3 with a bobbin and a cylindrical projecting section 3a is furnished on the top thereof. A screw core 4 is inserted into the center of the bobbin. At a winding groove in the outer periphery of the bobbin, a coil 5 is wound and wired to the terminal 2. When the terminal plate 3 with the bobbin is injected into the shield-case 1, the protuberance 1d of the skylight 1a at the top of the shield-case 1 is bited and is engaged with the outside periphery of the upper projecting section 3a of the bobbin. Just then, the backlash between the shield-case 1 and the top of the bobbin is prevented and also variation of inductance by vibrating etc. is eliminated. |
