| 摘要 |
<p>A mechanical paradox planetary speed reducer has an input shaft (2), a plurality of planet gears (6), a pair of fixed internal sun gears (7,8;11,12), and a movable internal sun gear (9;13). The fixed internal sun gears (7,8;11,12) are spaced from each other in the axial direction of the input shaft (2), and the movable internal sun gear (9;13) is disposed between the fixed internal sun gears (7,8;11,12). The movable internal sun gear (9;13) has outer flanges (9b,9c;13b,13c) on opposite ends thereof and fitted over the ends of the fixed internal sun gears (7,8;11,12) in sliding contact therewith, holding the movable internal sun gear (9;13) and the fixed internal sun gears (7,8;11,12) in concentric relation to each other.</p> |
