| 摘要 |
<p>An eccentrically rocking-type gear device (1) is provided with: an eccentric section (10a); a rocking gear (14) having an insertion hole into which the eccentric section (10a) is inserted and also having external teeth (14a); an outer cylinder (2); and a carrier (4). The outer cylinder (2) has internal tooth pins (3) meshing with the external teeth (14a) of the rocking gear (14). The carrier (4) is disposed on the inside radially of the outer cylinder (2) while holding the rocking gear (14). The outer cylinder (2) and the carrier (4) can be concentrically rotated relative to each other by the rocking of the rocking gear (14) caused by the rotation of the eccentric section (10a). The backlash angle of the carrier (4) relative to the outer cylinder (2) is set in the range of two to three minutes so that the backlash angle becomes about one minute due to the thermal expansion of the rocking gear (14) during use.</p> |
