| 摘要 |
PURPOSE:To eliminate the inertial force and impact force acting on a moving unit by providing a ring of nonmagnetic material at the outer periphery of the end of a projection of an electromagnet core of a moving device. CONSTITUTION:A circular ring 4 of nonmagnetic material is secured by engaging with the outer periphery of the ends of projections 1a-1f of an electromagnet core 1. The core 1 moves on the moving surface of a structure 3. When it moves, the ring 4 which contacts with the structure 3 is circular. Accordingly, the contact is continued, and the fluctuation of the center of the core 1 and the impact collision during moving are eliminated, and the inertia and impact which are energy loss of reducing the holding force to the structure 3 of the core 1 can be eliminated. |
