| 摘要 |
PURPOSE:To fix a magnetic core with no damage in terms of its structure and characteristics by forming a part which is elastically deformed to a winding pump and pressing the inside of the deforming part. CONSTITUTION:A flange 4a of a winding bobbin 4 is made of a material having a certain degree of elasticity, and the flange 4a contains two slender cavities 4c formed along the inner surface of the rear part of a case 1, i.e., the side edge extending toward a surface Z. The parts 4d and 4d are formed at the outside edges of cavities 4c and 4c which are deformed elastically toward cavities 4c owing to the existence of these cavities 4c when the force is applied toward these cavities from outside. At the same time, hemispherical projected parts 4e and 4e are formed in a body at about the center part of the outside surface of the parts 4d. The distance between the tip face of a front core 2 and the tip face of the part 4e of the bobbin 4 is set slightly larger than the distance between a surface Y, i.e., the inside surface of the case 1 at the rubbing surface side and the surface Z. |
