To provide a position adjusting mechanism that can finely adjust a position of a slide member while ensuring strength.SOLUTION: A position adjusting mechanism 100 includes a gear part 130 having multiple protrusions 133 arranged in the sliding direction, and a claw member 140 for regulating the movement of a slide member 120 when the protrusions 133 are engaged. The gear part 130 comprises a first gear part 131 and a second gear part 132 arranged in the slide perpendicular direction side by side. The claw member 140 comprises a first claw member 141 capable of engaging with the first gear part 131, and a second claw member 142 capable of being engaged with the second gear part 132. The first gear part 131 and the second gear part 132 are arranged by being displaced in the sliding direction so that the second claw member 142 may not be engaged with the second gear part 132 while the first claw member 141 is engaged with the first gear part 131, and the first claw member 141 may not be engaged with the first gear part 131 while the second claw member 142 is engaged with the second gear part 132.SELECTED DRAWING: Figure 4【課題】強度を確保しつつ、スライド部材の位置を細かく調節することができる位置調節機構を提供する。【解決手段】位置調節機構１００は、スライド方向に配列された複数の凸部１３３を有するギヤ部１３０と、凸部１３３に係合した場合にスライド部材１２０の移動を規制する爪部材１４０とを備える。ギヤ部１３０は、スライド直交方向に並んで配置された第１ギヤ部１３１と第２ギヤ部１３２とを含み、爪部材１４０は、第１ギヤ部１３１に係合可能な第１爪部材１４１と、第２ギヤ部１３２に係合可能な第２爪部材１４２とを含む。第１ギヤ部１３１と第２ギヤ部１３２は、第１爪部材１４１が第１ギヤ部１３１に係合した状態で第２爪部材１４２が第２ギヤ部１３２に係合せず、かつ、第２爪部材１４２が第２ギヤ部１３２に係合した状態で第１爪部材１４１が第１ギヤ部１３１に係合しないように、スライド方向にずれて配置されている。【選択図】図４
