| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint structure rod bodies for directing a good curvature in the axial direction. SOLUTION: The shaking-out type joint structure of the rod bodies is to join a small diameter rod body 1 to the ear side of a large diameter rod body 2 so as to be freely taken in and out. The small diameter rod body 1 has a main body part 1a and a fitting male part 1b continued to a rod butt side of the main body part 1a. The fitting male part 1b is tapered from the rod butt side in both inner diameter and outer diameter and the taper is steeper than that of the main body part 1a. The larger diameter rod body 2 has a main body part 2a and a fitting female body part 2b to which the fitting male part 1b can be fitted and extended to the ear side of the main body part 2a. The fitting female part 2b is tapered from the rod butt side in both inner diameter and outer diameter and the taper is steeper than that of the main body 2a. Further, the thickness (ΔX) of the main body part 2a of the larger diameter rod body 2 is thicker than the thickness (ΔZ) of the main body part 1a of the smaller diameter rod body 1, and the thickness (ΔY) of the fitting male part 1b of the smaller rod body 1 is thicker than the thickness (ΔZ) of the main body part 1a of the smaller rod body 1. COPYRIGHT: (C)2005,JPO&NCIPI
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