| 摘要 |
PROBLEM TO BE SOLVED: To provide an endoscope bending tube with few irregularities on the surface.SOLUTION: Adjacent first cylindrical members 140 are connected to each other by engaging two first truncated cone-shaped projections 145 with two first pivot holes 144 in such a way that each first pivot hole 144 is approximately coaxial with each truncated cone-shaped projection 145. The diameter of the first pivot hole 144 on the outer peripheral side is smaller than the diameter on the inner peripheral side, and the diameter of the first truncated cone-shaped projection 145 on the outer peripheral side is larger than the diameter on the inner peripheral side, so that the first truncated cone-shaped projection 145 is not disengaged from the first pivot hole 144. With this structure, each first cylindrical member 140 is attached in such a way as tiltable around the axis of the first pivot hole 144, that is the axis of the first truncated cone-shaped projection 145. Further, as a first flange receiving part 142 is caved in toward the inner peripheral side by the thickness of one first cylindrical member 140, the outer peripheral surface of a first flange part 143 provided on one first cylindrical member 140 is approximately flushed with the outer peripheral surface of the other first cylindrical member 140, so that an approximately uniform cylinder surface is formed over the whole length of a first joint member 113. |
