| 摘要 |
<p>PURPOSE:To contrive miniaturization of the title electromagnet device as well as to make the opposing area of magnetic pole larger by a method wherein the tip of a yoke has the part extended in such a manner that it is opposing to the side face of an armature block from the left and right sides of the part opposing to the first magnetic material piece, and the armature block is surrounded at least from three directions. CONSTITUTION:The title electromagnet is equipped with a yoke 4 which is extended along a side of a coil 5, the electromagnet block 1 which will be turned into the magnetic hole part having the polarity at the tip 3a of a core different from that of the tip 20 of the yoke by the working of the excitation of the coil 5, and the armature block 2 having the first magnetic material piece 6, the second magnetic material piece 7 and a permanent magnet 8. The yoke tip part 20 has the part extended opposing to the side face of the armature block 2 from the left and right sides of the part opposing to the first magnetic material part 6, and the armature block 2 is surrounded at least from three sides. As a result, leakage magnetic flux is not increased even on the device performing a single stable movement, the opposing area of magnetic pole can be made larger, and the magnetic flux of a permanent magnet and the magnetic flux generated by the excitation of the coil can be utilized effectively.</p> |
