PROBLEM TO BE SOLVED: To provide an endoscope that sufficiently secures an adjustment margin for adjusting the length of an insertion part protruding with respect to an operation part.SOLUTION: A projection-length adjustment part 50 includes: an insertion-part-side connection member 53 an operation-part-side connection member 54 and an adjustment ring 55. A flexible tube 36 constituting the insertion part 11 is fixed to the insertion-part-side connection member 53. The operation-part-side connection member 54 is fixed to a housing 49 of the operation part 12. In the adjustment ring 55, a first female screw part 61 is formed on the inner peripheral surface, and a first male screw part 62 reversely screwed with respect to the first female screw part 61 is formed on the outer peripheral surface. In the adjustment ring 55, the first female screw part 61 is engaged with a second male screw part 64 of the insertion-part-side connection member 53, and the first male screw part 62 is engaged with a second female screw part 68 of the operation-part-side connection member 54. When the adjustment ring 55 is rotated, the insertion-part-side connection member 53 and the operation-part-side connection member 54 can be separated from or brought close to each other.COPYRIGHT: (C)2012,JPO&INPIT【課題】操作部に対する挿入部の突出長を調整する調整代を十分に確保することが可能な内視鏡を提供する。【解決手段】突出長調整部50は、挿入部側接続部材53、操作部側接続部材54、調整リング55を備える。挿入部11を構成する可撓管36は、挿入部側接続部材53に固定される。操作部側接続部材54は、操作部12のハウジング49に固定される。調整リング55は、第1の雌ネジ部61が内周面に、第1の雌ネジ部61に対して逆ネジとされた第1の雄ネジ部62が外周面に形成されている。調整リング55は、第1の雌ネジ部61が挿入部側接続部材53の第2の雄ネジ部64と螺合し、第1の雄ネジ部62が操作部側接続部材54の第2の雌ネジ部68と螺合する。調整リング55を回転させると、挿入部側接続部材53、操作部側接続部材54を引き離す、あるいは近付けることができる。【選択図】図4
