| 摘要 |
PURPOSE:To improve the reliability of a water-cooled rotor in term of centrifugal force lift by filling elastic member between bellows, arranging a sleeve at the outer peripheral side to prevent the member from extending out, thereby facilitating the assembling. CONSTITUTION:Silicone rubber is filled as an elastic member 13 between bellow units in bellows 1, and the outer periphery is covered with a sleeve 14. Field coils 3A-3C and an insulating block 5 are displaced outside by the rotation of a rotor. The bellows 1 extends to absorb the displacement and tends to displace so as to vary the interval between the bellow units. Since the member 13 is, however, filled between the bellow units, the centrifugal force of the bellow units tend to slightly lift the member 13, but the member 13 swells outside due to the compression in the prescribed range to stop the sleeve 14, and the bellows 1 do not lift higher than that. |
