| 摘要 |
PURPOSE:To form a magnetic circuit while largely reducing the number of required parts and improve the magnetic property, by employing as an iron core an amorphous magnetic metal piece showing a soft magnetic property. CONSTITUTION:A plurality of amorphous magnetic metal pieces 10 showing a soft magnetic property are laminated and elastically bent at a substantially central part thereof to form forked side piece parts 13, 14. The end surfaces of the respective side piece parts 13, 14 are made to face each other with a predetermined gap maintained therebetween. One side piece part 13 is wound with an excitation coil 3. when the coil 3 is energized, a magnetic circuit is formed at an iron core 1. The side piece part 14 slightly swings owing to the elasticity of the bent part 15, and a magnetic pole surface 12 is attracted to a magnetic pole surface 11. When the energization is stopped, the bending stress stored in the bent part 15 causes the side piece part 14 to return. |
