| 摘要 |
<p>PURPOSE:To prevent the partial wear of friction plates by putting rotatably a rotary hub on the outer perimeter circle of an eccentric hub and at the same time, furnishing interveniently at the rotary hub a disk between the plane of an armature and the plane of a side plate through the friction plates. CONSTITUTION:As the drive of a shaft 2 is released and an electro magnetic coil 4 is demagnetized, an armature 8 is separated from the suction surface 3b of a field core 3 by the spring force of a brake spring 16, and a disk 13 is moved and friction plates 14, 15 on its both sides are press-welded. And the turning movement of the disk 13 is braked, and a rotary hub 11 stops and also, the shaft 2 stops. On the occasion of these stoppages, the disk 13 stops as it slides with both surfaces being rubbed with friction plates 14, 15, but stops as it keeps on making a planetary movement during the rotation before the stoppage of the shaft 2 as well as an eccentric hub 6 which is integral therewith.</p> |
