Koki watanabe - Koki Watanabe (1848 — 1901), Japanese politician

The supporting portion includes a mounting surface on which the photo interrupter is mounted, a hole portion defining a hole into which the claw portion is inserted, provided in the mounting surface and configured to engage with the claw portion, and a projection projecting from the mounting surface, and configured to regulate a position of the photo interrupter in a deforming direction in which the claw portion is elastically deformable in a state where the claw portion and the hole portion are engaged.

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