| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnetic braking apparatus capable of performing braking operation of a brake in a non-contact state and capable of downsizing the apparatus.SOLUTION: In an eddy current braking apparatus, a first rotor which is a mechanism requiring torques of winding or unwinding operation etc. in a treatment step of films, fibers, etc. and includes a permanent magnet group for generating eddy current braking and a second rotor including a conductor disk on the surface are arranged through a desired interspace. By arranging a plurality of projections of magnetic materials on the conductor disk at an equal pitch, an eddy current braking amount to be generated in accordance with a relative rotational speed difference between the two rotors can be increased and the apparatus can be also downsized.SELECTED DRAWING: Figure 1 |
