SPLIT TYPE CYLINDRICAL MAGNETIC SHIELD APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a split type cylindrical magnetic shield apparatus utilizing the magnetic shaking for remarkably improving usability. SOLUTION: The split type cylindrical magnetic shielding apparatus 1 comprises a plurality of C-shaped shaking blocks 2 (2A, 2B) having a C-shaped cross-section and the predetermined length along the axial direction in order to form therein a magnetic shield space through a combination. The C-shaped shaking block 2 (2A, 2B) includes a magnetic material layer 4 formed of a magnetic material having a rectangular magnetizing curve and the C-shaped cross-section coupled with an internal layer 4a and external layer 4b extended in the axial direction; and a coil 5 wound at least to a part of the internal layer 4a or external layer 4b of the magnetic material layer 4 for applying the magnetic shaking current to the C-shaped shaking block 2 (2A, 2B). COPYRIGHT: (C)2004,JPO