| 摘要 |
<p>PURPOSE:To effect high sensibility and high speed operation of an armature with small magnetomotive force by swinging the armature to contact its both ends with the other end of a yoke and one end of a subyoke alternatively. CONSTITUTION:When a coil C is unexcited, magnetic flux phi of a permanent magnet M is transmitted from a N pole of the magnet M to its S pole through a yoke end Y1' of a subyoke Y' and an arm Y2 of a yoke Y, so that one end A1 of an armature A is attracted to the subyoke Y' through attraction force caused by the magnetic flux phi of the magnet M. Then, when the coil C is excited to offset the magnetic flux phi of the magnet M, thus caused magnetic flux phi' of the coil C becomes to the opposite direction of the magnetic flux phi of the magnet M, so that the end A1 of the armature A repels from the subyoke through its conversion to a N pole immedeately after the excitation of the coil and then the other end A2 of the armature is attracted to a yoke end Y1. As a result, the armature A is swung and the other end A2 thereof is contacted with the yoke end Y1.</p> |
