| 摘要 |
<p>This diaphragm device is provided with a diaphragm base plate (2), a diaphragm member (3) that forms an aperture diaphragm, a working member (6) that is attached to a gear box (17) of the diaphragm base plate (2), a drive motor (11), a drive gear (65) that is attached to a rotary shaft of the drive motor, a reduction gear (9) that is rotatably attached to a spindle (31), a cover member (10) that is attached to a gear box (7), and a holder member (12) that is mounted on the cover member (10) while holding the drive motor (11). The holder member (12) is mounted on the cover member (10) as a result of moving along receiving surfaces (20a, 20b) disposed on the cover member (10). The drive gear (65) is configured in such a manner as to mesh with a driven gear (9) as a result of the holder member (12) moving along the receiving surfaces (20a, 20b) of the cover member (10).</p> |
