PLANETARY ROLLER DRIVE-TYPE INSCRIBED PLANETARY GEAR REDUCTION DEVICE

摘要

[Problem] To provide a small-sized, lightweight, and inexpensive inscribed planetary gear reduction device that has lower levels of vibration and noise than in the prior art. [Solution] This inscribed planetary gear reduction device is configured from: a planetary roller (300) that turns while in contact with the outer peripheral surface of an input shaft (C); a planetary gear (400) having an outer ring (430) that turns with the outer periphery of the planetary roller (300) inscribed thereon; a frame member (500) having a fixed outer gear (533) capable of meshing with an inner gear (433) formed in the outside surface of the outer ring (430) and allowing the planetary gear (400) to move in planetary motion along the inner periphery; and an output shaft (600) capable of extracting and outputting only the revolution component from the motion of the planetary gear (400).