| 摘要 |
<p>PURPOSE:To obtain a thin stereoscopic electromagnet without reducing the space of a coil, to increase the attraction force of an armature and to reduce power consumption by providing the armature perpendicularly to the coil axis direction. CONSTITUTION:A coil 2 is wound on a first yoke 1. An armature 3 is disposed among a base end 7 magnetically coupled with one end 6 of the yoke 1, the other end 9 of the yoke 1 and a second yoke 5, and has a free end 8 attracted to the yoke 5 at the time of nonenergization and attracted to the yoke 1 at the time of energization of the coil 2. A pair of permanent magnets 4 are disposed at the other end 9 of the yoke 1 to be magnetically coupled at one pole with the other end 9 and at the other pole with the yoke 5. A third yoke 10 is formed with a hole 11 at its center and engaged with the other end 9 of the yoke 1. With this structure, the spaces of the coil 2, the yoke 1, the yoke 5 and the magnets 4 are increased. Since a closed magnetic path of the yoke 1 and the armature 3 is formed at the time of energization of the coil 2, the attraction force of the armature 3 can be increased to reduce power consumption.</p> |
