| 摘要 |
PROBLEM TO BE SOLVED: To improve controllability at the time of release of connection. SOLUTION: An engaging protrusion 17 which protrudes outwards in the free condition and which can be pushed in by actuating a pressing force from the outside is formed at the outer periphery of the end of the shaft 11. Meanwhile, an engaging hole 18 engaging with the engaging protrusion is formed at the peripheral wall of the pipe 13 end. In this joint structure, a cover 20 which is displaceable only in the thickness direction of the peripheral wall of the pipe 13 and in which the engaging protrusion 17 in the state that it is fitted in the engaging hole 18 can be pressed from above the pipe itself is provided at the engaging hole 18. COPYRIGHT: (C)2003,JPO
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