| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the core for cylindrical coil with which the yield of production of core material can be improved, while the filling efficiency of the core inside a cylindrical member, where the coil is wound around, is enhanced. SOLUTION: The first core 1 and the second core 2 are inserted into a cylindrical body 3, when a coil is wound. The first core 1 has almost a square-shaped cross section, and its four corner parts 1a are in contact with the inner circumference of the cylindrical body 3. Also, the second core 2 has a rectangular cross-section, its one side is closely fixed to the side face of the first core 1, and its two outside corner parts 2a are in contact with the main circumference of the cylindrical body 3. With such a structure, the filling efficiency of the core on the inside of the cylindrical body 3 can be enhanced.</p> |
