| 摘要 |
<p>PURPOSE:To prevent the lowering of magnetic efficiency even when width is limited and a stroke is lengthened by interposing a permanent magnet between end sections, where armatures are positions, in a first yoke and a second yoke. CONSTITUTION:Magnetic flux PHI1 flows through a magnetic path using a magnetic pole N for a permanent magnet 9, one end section 6b of a first yoke 6, an armature 4 for a moving core 3, one end section 8b of a second yoke 8 and a magnetic pole S for the permanent magnet 9 as paths, and magnetic flux PHI2 flows by a permanent magnet 10. Consequently, suction force each works between the armature 4 and one end section 6b of the first yoke 6 and an armature 5 and the other end section 8c of the second yoke 8, and the moving core 3 is stabilized. When a coil 1 is conducted under the state and magnetic flux PHI3 in the direction the same as magnetic flux PHI1 and in the direction opposite to magnetic flux PHI2 is passed through the moving core 3, the moving core 3 is operated by suction force generated between the armature 4 and one end section 8b of the second yoke 8 and resiliency generated between the armature 5 and the other end section 6c of the first yoke 6, and the armature 4 for the moving core 3 is sucked to one end section 8b of the second yoke 8.</p> |
