| 摘要 |
A Geneva drive mechanism includes a Geneva gear (2) having arcuate recesses (5) and radially outwardly opening slots (6) arranged alternately in a circumferential direction thereof, and a driving member (4) having an engaging element (8) for engaging the slots. The driving member has a cam (11). The cam includes a plurality of rolling elements (14) rotatable and movable circumferentially of the driving member. The rolling elements are arranged in a portion of the cam which contacts the arcuate surfaces when the engaging element is disengaged from the slots and rotation of the Geneva gear is restricted. <IMAGE> |
