| 摘要 |
Disclosed is a gear device which comprises an outer cylinder (2) fixable to one of two counterpart member; a crankshaft (20); a carrier (4) configured to be fixable to the other counterpart member and formed with a through-hole (4b), wherein the carrier is adapted to be relatively rotated with respect to the outer cylinder (2) in interlocking relation with rotation of the crankshaft (20); and a cylindrical body (8) disposed in the through-hole (4b) of the carrier (4). The through-hole (4b) of the carrier (4) has an inner peripheral surface formed with an outward groove (43). The cylindrical body (8) has an outer peripheral surface formed with an inward groove (45) in opposed relation to the outward groove (43) of the carrier (4). The gear device is provided with an O-ring (47) disposed to extend from an inside of the outward groove (43) to an inside of the inward groove (45). |
