| 摘要 |
<p>The invention relates to an eccentric gear for transferring a torque in one single step and at a high gear ratio, from a driving element (2) to a driven element (3). In a stationary housing (5) there is an outer gear ring (6) which co-operates with an inner gear ring (7) which in turn is co-rotatively connected to the driven element (3) that is mounted in bearings by means of a stationary bearing (10). The inner gear ring (7) is eccentrically movable to generate along the outer gear ring (6), while only some teeth are in engagement with the outer gear ring (6). Thereby, the inner gear ring (7) performs a nutating motion in a manner known per se. The inner gear ring (7) is connected to a thin rod (13) which at a free end has a male means (16) that is in engagement with a seat (not visible) formed with an analogous cross-sectional shape located deeply within the driven element (3). By this construction, the gear attains an extremely short length of construction, at the same time as the sound level during operation is reduced.</p> |
