PROBLEM TO BE SOLVED: To provide a wire traction mechanism for an endoscope which can achieve excellent operability without increasing the size of an operation part.SOLUTION: A wire traction mechanism 25 comprises: a first pulley 40 and a second pulley 41 where proximal end sides of first traction wires 15a, 15b and second traction wires 16a, 16b are respectively attached to peripheral parts； a first slider 42 and a second slider 43 which move in connection with a bending operation input part 21 and can be displaced in a direction perpendicular to an axis of a rotating shaft 35 of the first and second pulleys 40, 41； and a first transmission member 44 and a second transmission 45 which respectively convert the displacement of the first and second sliders 42, 43 to rotations of the first and second pulleys 40, 41.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2018,JPO&INPIT【課題】操作部を大型化することなく、良好な操作性を実現することができる内視鏡用ワイヤ牽引機構を提供する。【解決手段】第１の牽引ワイヤ１５ａ，１５ｂ及び第２の牽引ワイヤ１６ａ，１６ｂの基端側がそれぞれ周部に取り付けられた第１のプーリ４０及び第２のプーリ４１と、湾曲操作入力部２１に連動して第１，第２のプーリ４０，４１の回動軸３５に対して軸直角な方向に変位可能な第１のスライダ４２及び第２のスライダ４３と、第１，第２のスライダ４２，４３の変位を第１，第２のプーリ４０，４１の回転にそれぞれ変換する第１の伝達部材４４及び第２の伝達部材４５と、を有してワイヤ牽引機構２５を構成する。【選択図】図６
