| 摘要 |
A resin gear is formed by connecting a rim having teeth on the outer periphery thereof to a hub by means of a substantially annular web having a thin portion which is thinner than the rim and which is curved in facewidth directions, the thin portion being elastically deformable so as to allow a relative displacement in radial directions between the rim and the hub while preventing a relative displacement in rotational directions between the rim and the hub.
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