| 摘要 |
Disclosed is a swinging internal engagement type planetary gear device such that neither the strength nor the durability of a power transmission system is reduced, that radial movement of packed grease can be performed more smoothly, and that grease can be sufficiently supplied to those portions in the device where lubrication is required. Said swinging internal engagement type planetary gear device (G1) is provided with external gears (110, 112); an internal gear (114) with which the external gears (110, 112) internally engage; a flange body (116) disposed on the axial side of the external gears (110, 112); and a plurality inner pins (rotation synchronization members) (118) which are provided circumferentially to the flange body (116), and which pass through the external gears (110, 112) and synchronize with the rotation of the external gears (110, 112), thereby taking out or restricting the rotation of the external gears (110, 112). Grooves are formed, between the inner pins (118), on that axial surface of the flange body (116) which is on the side of the external gears. |
