| 摘要 |
PURPOSE:To prevent the leakage of magnetism and to prevent the slip of a male stopper by forming an edge collar at a nonmagnetic case of an engaging male tool utilizing a permanent magnet. CONSTITUTION:Ferromagnetic plates 2, 7 are mounted on both pole faces of a permanent magnet 1 opened with an engaging hole 1a toward the other pole face from one pole face, and is engaged with a cylindrical nonmagnetic case 6 with a bottom, thereby integrating with a connecting piece 6c provided at the opening edge of the case 6. A hole 6b is opened at the bottom to communicated with a magnet hole 1a at the case 6, and an engaging edge collar 6a formed by bending along the outer peripheral edge of the plate 7 is provided. A ferromagnetic rod 4 is inserted into the hole 1a of the magnet 1, and is caulked to the metal fitting 8 via the plate 2 with the rod 4 of fine diameter. |
