| 摘要 |
PURPOSE: To guarantee a large magnetic iron cross-section, even in a region for making electrical joint by a structure wherein a magnetic casing comprises a first magnet outer sheath member and a second magnet outer sheath member partially covering the first member and a supply part is projected through a cut in one magnet outer sheath member toward an electrical joint. CONSTITUTION: A magnet coil 22 is connected with an electric joint 45 located on the outside of a magnet casing 10 through a supply part 46 penetrating the magnet casing 10. A first magnet outer sheath member 11 has a substantially square cut 47 in the outer circumferential surface thereof starting from the free end face thereof and a second magnet outer sheath member 12 has a similar cut 48 in the region of a step 18 and a small diameter cylinder section 17. The cut 48 is started from the free end face of the cylinder section 17. Both cuts 47, 48 opened on one side in both magnet outer sheath members 11, 12 surround the supply section 46 and the coil body 23 and include and surround the section under assembled state. |
