To provide a method for producing joint ring connecting bodies for an insertion portion of an endoscope with high producing efficiency.
The method of producing joint ring connecting bodies 22 for an insertion portion of an endoscope includes a process of forming a joint ring connecting body preparation part 66 having a plurality of joint ring preparation parts 68 and at least one connecting part preparation part 70 on a sheet of a plate material 45 with elasticity by punching in a manner to support the preparation part 66 by a supporting part 81 extending from an edge part of the plate material 45, a process of bending at least a part of the connecting part preparation part 70 to intersect with a plane in parallel with the plate material 45, a process of bending the preparation part 66 into a U-shape at least once to make the preparation part 66 cylindrical, and a process of bending the part 66, which is bent into the U-shape, into an O-shape to make the part 66 cylindrical.
COPYRIGHT: (C)2008,JPO&INPIT
HOSAKA KIYOKAZU
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto