ELECTROMAGNET

摘要

PURPOSE:To obtain a magnetic network of less magnetic resistance and better magnetic efficiency, by pressure-attaching one end of a pole piece and yoke to in a coil bobbin and piling up the other closely each other. CONSTITUTION:A U-shaped pole piece 2 and a yoke 1 are so inserted in a guide groove 3a of coil bobbin 3 that one end corresponds each other. The pole piece 2 and yoke 1 are pressure-attached. A hinge spring 5 is attached to a contact 4 at the same time. The other end of spring 5 is attached to the yoke 1 before pressurization. The other end of pole piece 2 and yoke 1 is piled up closely each other. This ensures a larger contact area between pole piece 2 and yoke 1 sufficiently, and pole and hinge areas in the bobbin 3 comparatively. A magnetic network can be obtained to realize less magnetic resistance and better magnetic efficiency.