| 摘要 |
Provided is a gear transmission device that has a simple structure and rotates smoothly. The gear transmission device is eccentric oscillating, an external tooth gear revolving inside an internal tooth gear while meshed to the internal tooth gear. A carrier is supported at a case, and three crankshafts are supported at the carrier. Cams are affixed to the crankshafts, and the hole of the external tooth gear is engaged by the cams. When the crankshafts rotate, the external tooth gear revolves inside the internal tooth gear while meshed to the internal tooth gear. A single-phase claw-pole motor is joined to each of the three crankshafts. The three claw-pole motors cause the rotation of the same external tooth gear via the crankshafts. Therefore, the external tooth gear rotates smoothly, and as a result, the carrier, which is the output shaft, rotates smoothly. |
