| 摘要 |
<p>A planetary gear reduction mechanism comprises: an input shaft rotatable about a first rotational axis (O1); an output shaft; at least one planetary gear driven by the input shaft, the planetary gear having a first and a second gear of the same shape and integrated together rotatably about a third rotational axis (03) in out of phase; an external fixed sun gear meshed with the first gear of the planetary gear; and an external driven sun gear having a different gear teeth number than the fixed sun gear, meshed with the second gear of the planetary gear, and coaxially integrated with the output shaft, wherein the input shaft is provided with an eccentric rotary plate rotatable about a second rotational axis (02) offset from the first rotational axis by a predetermined distance; and the planetary gear is provided with a shaft mechanism which is offset from the third rotational axis (03) in the same eccentricity direction as the eccentric rotary plate by the predetermined distance and is operably coupled to the eccentric rotary plate such that the shaft mechanism eccentrically rotates about the third rotational axis (03) in synchronism with the eccentric rotary plate.</p> |
