| 摘要 |
<p>PURPOSE:To stabilize the operation of the first yoke or of the second yoke by a simple construction while reducing reluctance by inserting the first axial part and the second axial part into an axial hole in a magnetic device being magnetically coupled. CONSTITUTION:When a coil 11 is made conductive, magnetic flux flows through the first axial part 3, the extended part 4, the first pole-face part 5, the second pole-face part 9, the extended part 8, the second axial part 7 and a gap G to generate attraction force between the first pole-face part 5 and the second pole-face part 9. Consequently, a yoke 6 rotates to an axial hole 1 of a coil device 2 and the pole-face part 5 is attracted by the pole-face part 9. When excitation is stopped, the first yoke 6 returns by means of a return spring. Since the axial part 5 and the axial part 9 are inserted into the axial hole 1 of the coil device 2 being magnetically coupled, working of the first yoke or of the second yoke is stabilized by a simple construction. Further, reluctance can be reduced.</p> |
