| 摘要 |
PROBLEM TO BE SOLVED: To provide a planetary gear reduction gear which transmits shaft torque to an output shaft from an eccentric planetary gear, without causing load concentration on a specified part and complies with a high load. SOLUTION: A joint body 17 slidable in a given direction over a planetary gear 14 and in the direction orthogonal to the given direction and slidable in a direction orthogonal to the given direction is disposed on an output shaft 15 between a planetary gear 14 and the output shaft 15. Since the joint body 17 is moved two-dimensionally between the planetary gear 14 and the output shaft 15, turning is transmitted as is from the eccentric planetary gear 14 to an output shaft 15. Thus, loads each are transmitted by slide contact parts and shaft torque is transmitted from the planetary gear 14 to the output shaft 15 without causing load concentration on a specified part, so that advantages are offered in terms of durability, higher shaft torque is transmitted and coping with a high load is practicable.
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