| 摘要 |
PURPOSE:To achieve an economical device, by providing an assembling plate with a projected vertical center rod and two yokes of the same shape in which two parallel magnetic poles and two auxiliary magnetic poles in parallel are incorporatedly coupled. CONSTITUTION:In a yoke 10 and a yoke 11 consisting of auxiliary electrodes 14 and 15, magnetic poles 18 and 19, and an iron core 21, the magnetic poles 16 and 18, the magnetic poles 17 and 19, and auxiliary magnetic poles 13 and 15 are opposed to each other via an air gap and arranged symmetrically to the center point of a assembling plate 22. To the center position of the said assembling plate 22, a center rod 30 provided vertically to the surface is inserted, and an armature 27 can freely be moved toward rotating and lengthwise direction on the assembling plate around the center rod 30. Thus, in the assembling of the yokes, the armature and a continuous plate, the assembling cost is very low, since the components can only be piled up. |
