PROBLEM TO BE SOLVED: To provide a rotary chopper driver which can be assembled while holding down a positional deviation amount between the axes of an output shaft of a motor and a rotary driving shaft of a rotary chopper which are connected to each other by a flexible joint.SOLUTION: A rotary chopper driver includes: a base member 31 separated from a light source for supplying illuminating light to a photo detecting part of an endoscope a rotary driving shaft supported on the base member rotary choppers 40, 42 rotating between the light source supported on the rotary driving shaft and the photo detecting part a motor 50 attached and detached to and from the base member and having an output shaft 52 a positioning joint member having a first temporary connecting part and a second temporary connecting part attached and detached to and from the rotary driving shaft and the output shaft, respectively a flexible joint 70 selectively attaching and detaching the positioning joint member to and from the rotary driving shaft and the output shaft and a connecting member 62 which can be fixed to the motor 50 only at a predetermined position and can be fixed to the base member 31 while the position is varied.COPYRIGHT: (C)2014,JPO&INPIT【課題】フレキシブルジョイントによって互いに接続されるモータの出力軸と回転チョッパの回転駆動軸との軸線どうしの位置ずれ量を小さく抑えながら組み立てることが可能な回転チョッパ駆動装置を提供する。【解決手段】内視鏡の受光部に対して照明光を供給する光源から離間するベース部材31と、ベース部材に支持した回転駆動軸と、回転駆動軸に支持した光源と受光部の間で回転する回転チョッパ40、42と、ベース部材に着脱可能でかつ出力軸52を有するモータ50と、回転駆動軸及び出力軸に対してそれぞれ着脱可能な第一仮接続部及び第二仮接続部を有する位置決め用ジョイント部材と、回転駆動軸及び出力軸に対して位置決め用ジョイント部材と選択的に着脱可能なフレキシブルジョイント70と、モータ50とは所定の固定位置でのみ固定可能でベース部材31とは位置を変えながら固定可能である連結部材62とを備える。【選択図】図3
