| 摘要 |
PROBLEM TO BE SOLVED: To transmit high torque.SOLUTION: A differential gear reduction mechanism comprises: an oscillation crown gear 4 in which a center axial line Ac performs swing motion around a rotation axial line Ar with rotation of an input axis 6; a non-oscillation crown gear 5 that engages with the oscillation crown gear 4, in which the tooth row having a tooth number different from the tooth number of the oscillation crown gear 4 is formed, the non-oscillation crown gear 5 being fixed to a casing 8; and an output shaft 7 that rotates around the rotation axial line Ar with rotation of the oscillation crown gear 4. The output shaft 7 and the oscillation crown gear 4 are rigidly connected to each other relatively unrotatably while allowing oscillation of the oscillation crown gear 4, by a spline structure S. |
