| 摘要 |
The endoscope includes a drive section which bends and drives a bending portion, a C ring-shaped member which frictionally engages with a pulley and has a notch portion at a portion, an operation input member which performs bending operation, an operation input-side pulling member which is wound around the C ring-shaped member and extending toward the operation input member and is coupled to the operation input member such that a wrap distance, over which the operation input-side pulling member wraps around the C ring-shaped member across the notch portion, decreases with increase in the amount of operation of the operation input member, and a bending portion-side pulling member which is wound around the C ring-shaped member and extending toward the bending portion and is coupled to the bending portion so as not to wrap around the C ring-shaped member across the notch portion. |
