| 摘要 |
<p>PURPOSE:To obtain a small polarized electromagnet using a simple structure by a method wherein a fixed iron core is formed in the shape of E using soft magnetic material, coil being wound on trunks, and a yoke made of soft magnetic material on which a permanent magnet split into two are mounted is provided under the three protruded legs to form a magnet device. CONSTITUTION:An E-shaped, fixed iron core consists of a trunk 112a which is made of soft magnetic material and extends in a straight line, and three legs 112b, 112c, 112d which protrude from the both ends and middle of the trunk. Coils 111 are wound around the two sections of the trunk 112a which are between the legs. A yoke 113 made of soft magnetic material is arranged under the end of each leg. An armature is split into two parts, which are adhered to the yoke using synthetic resin 114c. An armature 114a extends to the ends of the legs 112b and 112c; an armature 114b, to the ends of the legs 112c and 112d. With this structure, the polarity of the opposing ends of these armatures 114a and 114b is different so that current flowing through the coil 111 is selected to produce individual magnetic circuits.</p> |
