| 摘要 |
PURPOSE:To optimize a magnetic flux amount contributed to the attraction of an armature corresponding to the irregularity in the magnetic flux of a permanent magnet, by providing an auxiliary magnetic path containing a void in a magnet comprising a magnetic body arranged in parallel relation to the permanent magnet. CONSTITUTION:A current is supplied to a coil to generate magnetic flux in a direction reverse to that of the magnetic flux of a permanent magnet 4 and this magnetic flux is returned to the core 1 through a base 3 having the course comprising core 1 spacer 6 yoke 5 auxiliary magnetic path member 8 void 9 ferromagnetic body 9. Said auxiliary magnetic channel member 8 is clamped to the yoke 5 by a screw 21 to enable the adjustment of the void 9 which is in turn set corresponding to the degree of the irregularity in the magnetic flux of the permanent magnet 4 to adjust the leaked magnetic flux of the permanent magnet 4 and a magnetic flux amount distributed to the armature 7 and the side of the core 1 is adjusted while distributed magnetic flux by the permanent magnet 4 is optimized by inverse excitation due to the coil 2 to enhance efficiency. |
