| 摘要 |
PURPOSE:To hold a gap regulating ring engaged with a tachometer generator case in the optimally regulated state by providing the ring, thereby readily selecting freely the regulation of the gap. CONSTITUTION:When a gap G is regulated, a gap regulating ring 14 is rotated while the ring 14 is closely contacted with the surface of a gear case through a packing 10. Since the ring 14, a generator case 11 are engaged by screws 12, 13, the case 11 is not rotated, but axially moves to alter the gap G. Since the case 11 is not rotated, an output cable 8 is not twisted. |
