| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent the slide of a gear on a rotary shaft. <P>SOLUTION: A cam driving gear 48 and a zoom cam 49 are supported on the same rotary shaft. A rail-shaped groove part 48b is formed all over the circumference on the tooth surface part of the cam driving gear 48. A rib 53 is inserted in the groove part 48b to prevent the slide of the cam driving gear 48 in a shaft direction. Since the rib 53 is provided on a cover member 26 with which the aperture of a lens housing 25 is covered, the rim 53 is inserted in the groove part 48b accompanied with operation to attach the cover member 26 to the lens housing 25. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
