An endoscope according to the present invention includes a distal end member of an endoscope main body, a guide groove formed in the distal end member from the proximal end side toward the distal end side, a guide groove provided in the proximal end and the distal end in the guide groove 1, a second recess, a cover mounted on the distal end member, and a projection provided on the cover and sliding in the guide groove to selectively engage with the first recess and the second recess The cover is fixed to the tip member by engaging the convex portion with the first concave portion and the convex portion is slid along the guide groove to be engaged with the second concave portion so that the cover is attached to the tip member On the other hand, fix it in a state shifted to the tip side.本発明による内視鏡は、内視鏡本体の先端部材と、先端部材に基端側から先端側に向かって設けたガイド溝と、ガイド溝内の基端と先端とに配設された第1、第2の凹部と、先端部材に装着されるカバーと、カバーに設けられてガイド溝内をスライドし第1の凹部と第2の凹部に対して選択的に係合する凸部とを具備し、凸部を第1の凹部に係合させることでカバーを先端部材に固定し、凸部をガイド溝に沿ってスライドさせて第2の凹部に係合させることでカバーを先端部材に対し、先端側にずらした状態で固定する。
