| 摘要 |
PURPOSE:To provide an effective magnetic flux path and reduce the mass of an armature, by providing an auxiliary yoke which is magnetically coupled to an intermediate member of a yoke, is extended in a predetermined gap of the yoke, and has a penetrating part through which an armature displaceably penetrates. CONSTITUTION:The auxiliary yoke 15 is magnetically coupled to an end face of the intermediate member 5, is extended in the predetermined gap of the yoke 1, and is provided with the penetrating part through which the armature 10 displaceably penetrates. The magnetic flux path between a pole plate 8 and the intermediate member 5 is formed serially of the armature 10 and the auxiliary yoke 15, and the armature 10 is formed in an extremely small size. |
