| 摘要 |
PROBLEM TO BE SOLVED: To improve durability of a joining part, and to improve strength without impairing an external appearance of the joining part of a pipe member and a joint. SOLUTION: This joining structure has a joint member 15 formed in a cylindrical shape and the pipe member 5 joined by being inserted into the joint member 15, and the joint member 15 has bending parts 19 bending in the radial inside direction on the shaft directional both edges, and the pipe member 5 has a swelling part 28 swelling in the radial outside direction along an inside surface of the joint member 15 between the bending parts 19 on the shaft directional both ends in a side surface part inserted into the joint member 15.
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