| 摘要 |
PURPOSE:To allow the upper surfaces of cores to contact fully the lower surface of an armature positioned opposite to yokes by a method wherein a supporting board are provided with holes whereinto headed pins penetrating the yokes are inserted for the board to be coupled movably with the yokes, when the lower surfaces of the coil-wound cores are fixed to the yokes that are in turn fixed to the supporting board. CONSTITUTION:Coils 1 are wound respectively around two cores 2 and the ends of the cores 2 protruding downward are provided respectively with yokes 4 and the ends protruding upward are provided with an armature 5 spanning the two cores 2. The two yokes 4 are fixed to a supporting board 8, when each of the yokes 4 are provided with two through holes 4a and the supporting board 8 is also provided with holes and the yokes 4 and the board 8 are coupled with headed pins 9. The cores 2 are allowed to rock back and forth, and the upper surface of the cores 2 are fully in contact with the armature 5. |
