| 摘要 |
The invention concerns a step-down gear unit with a rigid support ring (1), comprising a substantially cylindrical support surface (1), and with a radially flexible rolling collet (5) which has an outer generated surface (7) with a smaller peripheral length than the support surface (2), one or a plurality of peripheral sections of the outer generated surface (7) being held in substantially slip-free engagement in continuous exchange with the support surface (2) of the support ring (1) by one or a plurality of parts lying on an enveloping circle of a drive core (20) which is rotatably disposed inside the rolling collet (5) and is rotated by a drive shaft (14). The enveloping circle (20) of the driven elliptical drive core (20) has a substantially smaller diameter (Dh) than the basically cylindrical rolling collet (5). The rolling collet (5) is supported on the drive core (20) by a plurality of substantially radial transmission elements (32) which are all of equal length. |
