| 摘要 |
<p>A manufacturing method of a bending part coupling assembly for an endoscope insertion portion having a high manufacturing efficiency is provided. A manufacturing method of a bending part coupling assembly (22) for an endoscope insertion portion including forming in one plate material (45) having elasticity a bending part coupling assembly preparing portion (66) including a plurality of bending part preparing portions (68) and at least one coupling portion preparing portion (70) by punching in such a manner that the bending part coupling assembly preparing portion (66) is supported by a support portion (81) extending from an edge of the plate material (45), bending at least a portion of the coupling portion preparing portion (70) to cross a plane parallel to the plate material (45), U-bending the bending part coupling assembly preparing portion (66) at least once to form the bending part coupling assembly preparing portion (66) into a cylindrical shape, and O-bending the U-bent bending part coupling assembly preparing portion (66) to form the bending part coupling assembly preparing portion (66) into a cylindrical shape.</p> |
