PROBLEM TO BE SOLVED: To provide a curved envelope fixing structure that can readily fix an envelope for a curved part of an endoscope and shorten a manufacturing time.SOLUTION: A curved envelope fixing structure includes: a hard frame 21 provided in an insertion part 2 of an endoscope 1； a curved envelope 31 disposed so as to cover an outer peripheral part of the hard frame 21 together with a curved part 7 provided in the insertion part 2； and a fixing member 25 for holding a part covering the hard frame 21 of the curved envelope 31 so as to press in an inner radial direction in a watertight manner and having a welding part 26 to press and fix the part.SELECTED DRAWING: Figure 2【課題】 内視鏡の湾曲部の外皮を簡単に固定でき、製造時間を短縮することができる湾曲外皮の固定構造の提供。【解決手段】 湾曲外皮固定構造は、内視鏡１の挿入部２に設けられた硬性枠２１と、挿入部２に設けられた湾曲部７と共に、硬性枠２１の外周部を覆うように配設される湾曲外皮３１と、湾曲外皮３１の硬性枠２１を覆った部分を内径方向に押し付けるように水密保持し、溶着部２６を有して圧着固定する固定部材２５と、を具備する。【選択図】図２
