| 摘要 |
<p>PURPOSE:To improve assembling operability and to prevent a core from falling from a case by providing engagement parts for positioning to a substrate where a core skirt for storing the core and a magnetism sensing element are mounted, and providing a core stopper which fixes the core. CONSTITUTION:The ferrite core 1 provided with a gap 1a is put in the core skirt 2 and a Hall element is arranged as the magnetism sensing element in the gap 1a. The printed board 3 and core skirt 2 are provided with a hole 3a and a projection 2a as the engagement parts for positioning the Hall element, and the projection 2a is fitted in the hole 3a. Further, a projection part 6b which penetrates the center part of the core 1 is formed on a case 6, and the core stopper 7 is fitted atop of the projection part 6b by a spring action to prevent the core 1 from falling. Thus, the assembling operability is improved and the core is prevented from falling the case.</p> |
