| 摘要 |
<p>A rotary drive mechanism has an input shaft (10) with a first crank (11), mounted parallel to an output shaft (13), the input shaft (10) being offset from the output shaft (13) by a distance equal to the length of the first crank (11), the output shaft (13) having a second crank (14) of greater length than the first crank (11), the first and second cranks (11, 14) are pivotally connected to opposite ends of a link (16), interlocking formations (20, 22, 25) are provided to prevent rotation of the second crank (14) and link (16) independently of the input shaft (10) when the second crank (14) and link (16) are parallel to one another.</p> |
