| 摘要 |
A power transmission device for transmitting rotational drive force outputted from a driving source (E) to an apparatus to be driven (2) includes: a driving-side rotational body (21) rotated by the rotational drive force; a driven-side rotational body (22, 24, 25, 26, 50) that rotates in conjunction with a rotation axis (2a) of the apparatus to be driven (2); and a coupling member (26, 40). The coupling member is formed in the shape of a plate extending in a direction perpendicular to the rotation axis so as to be coupled to at least one of the driving-side rotational body and the driven-side rotational body and capable of coupling the driving-side rotational body and the driven-side rotational body to each other. The coupling member has a through-hole (26c, 40a), and the driven-side rotational body has an overlapping section (22a, 50a) which is disposed to overlap the through-hole when viewed in the axial direction of the rotation axis. |
