Problem to be solved: to provide a watertight structure of an endoscope of the endoscope capable of improving the water tightness without causing an excessive load to the joint interposed between the water tight holding members and lengthening the product life.The watertight structure of the endoscope 101 is a case body 21 having an opening 22, a cover member 31 mounted on the rear surface of the opening 22 of the case body 21, a first edge portion 23 for forming an opening 22 of the case body 21, and a coupler which is joined to the first edge portion A second edge portion 34 of the bar member 31, a packing support portion 36 provided at the second edge portion 34 and projecting from the rear surface of the cover member 31, a back surface 37 of the cover member 31 and a surface of the packing support portionA watertight packing 35 which is in contact with the surface 6a of the first edge portion 23 is provided with a contact portion 35A which is in close contact with the wall surface 23a of the first edge portion 23 and is longer than the width of the surface 36a of the packing support portion 36.Diagram【課題】水密保持部材が介在する接合部に無理な負荷をかけずに、より水密性を向上させることができ、製品寿命を長くすることができる内視鏡の筐体水密構造の提供。【解決手段】内視鏡101の筐体水密構造は、開口部22を有するケース体21と、ケース体21の開口部22を背面側が覆うように装着されるカバー部材31と、ケース体21の開口部22を形成する第1の縁辺部23と、第1の縁辺部23に接合されるカバー部材31の第2の縁辺部34と、第2の縁辺部34に設けられ、カバー部材31の背面から突出するパッキン支持部36と、カバー部材31の背面37とパッキン支持部36の表面36aに接触し、第1の縁辺部23の壁面23aに密着する密着部35aを備え、パッキン支持部36の表面36aの幅よりも長く設けられた水密パッキン35と、を備える。【選択図】図7
