SLIDING STRUCTURE OF GEAR AND SHAFT, AND RETAINER OF ROLLER BEARING

摘要

PROBLEM TO BE SOLVED: To incorporate larger rollers while maintaining reduction in size of a device securing a degree of freedom in design.

SOLUTION: A sliding structure of a gear and a shaft includes a plurality of rollers 26A and 26B disposed between inner peripheries of external-tooth gears (gears) 24A and 24B, and outer peripheries of eccentric parts (shafts) 22A and 22B, and retainers 21A and 21B for retaining the plurality of rollers 26A and 26B. Grooves 58A and 58B that house portions of the retainers 21A and 21B are formed in a rolling contact surface of the inner peripheries of the external-tooth gears 24A and 24B.

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