| 摘要 |
PROBLEM TO BE SOLVED: To secure a magnetic path, and a stroke for the movement of a movable iron core.SOLUTION: In the inside, or in an inner side in the radial direction, of an iron core part 36a of a movable iron core 36, a guide part 37 made up of a nonmagnetic material, such as a resin material, is integrally accommodated in the iron core part 36a. A guide part 37 is integrated in the iron core part 36a by insert molding, after the iron core part 36a is formed by hammering. |
