| 摘要 |
PROBLEM TO BE SOLVED: To provide a fastening jig used for assemblying of a gear component.SOLUTION: A gear component (50) comprises: a shaft (51) having a gear (55); and a screw component (52) fastened to the end of the shaft (51). The fastening jig is used for fastening the screw component (52) to the shaft (51). A substrate (11) is configured to install the gear component (50) thereon. The substrate includes fixing gears (22A, 22B) meshed with the gear (55) of the gear component (50) so as to non-rotatably lock the gear component (50). |
