| 摘要 |
<p>In a crank-type driver (20) that includes a first support member (22) having a drive shaft (34) fitted thereto and joined to the drive shaft in a non-rotatable fashion; a second support member (24) joined to the first support member in a non-rotatable fashion; an eccentric shaft (24a) supported by the second support member; and a linking member (26) rotatably supported by the second support member by means of the eccentric shaft and linked to a driven member (12a, 12b), the second support member joined to the first support member has two or more settable fixation positions with respect to the first support member, each fixation position being set as an angular position about an axis line (L1) of the drive shaft. An axis line (L2) of the eccentric shaft is located at an eccentric position relative to the axis line of the drive shaft at each fixation position, the eccentric position being different between the two or more settable fixation positions.</p> |
