| 摘要 |
PURPOSE:To prevent partial wear of an output shaft by minimizing its unbalanced rotation by means of counterweights embedded in a rotor flange on the side opposite to permanent magnets across the center axis. CONSTITUTION:A rotor 1 is carried by a transmission output shaft to be rotatable with said shaft. The rotor 1 is provided with an annular flange 1a which comprises a proper number of permanent magnets 2 embedded along a line segment of a circle concentric with said shaft and iron counterweights 3 of the same weight as said permanent magnets embedded along another line segment of said circle opposing to said permanent magnets across the shaft axis, said counterweights being calked to the flange through washers 4. Since, according to the rotor of this invention, the same number of counterweights with the same weight as the permanent magnets are embedded symmetrically to said permanent magnets at the same distance from the shaft center, the rotor is free from unbalanced rotation preventing partial wear of the output shaft. |
