| 摘要 |
Disclosed herein is a speed reducer or variable speed drive which includes input, output, and intermediate shafts. One end of the intermediate shaft is connected to the output shaft by a universal joint. The other end of the intermediate shaft is received in a transverse slot at the end of the input shaft and is free to move outwardly in the slot from a position in axial alignment with the input shaft in response to centrifugal force upon rotation of the input shaft and thus cause the intermediate shaft to gyrate about the universal joint. The rate of rotation of the output shaft with respect to the input shaft is varied by selective axial movement of a disc which is engageable with a wobble plate secured to the intermediate shaft and which controls the displacement of the other end of the intermediate shaft.
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