| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint structure of a piping for a cable, which can secure a great expansion/contraction margin in the pipe axial direction while being simple in constitution. SOLUTION: An inner cylinder 1 is provided with a first retaining projected part 6 to be locked on the outer circumferential surface 31 at the end part of a first pipe line 3, a first sealing member 9 closely brought into contact with the outer circumferential surface 31 at the end part, a bent part 10 bent inwardly while being interposed between the connection ends of the first and second pipe-lines 3 and 4, and with the outer circumferential surface at the end part of the, second pipe line 4. A drawing portion 16 slidably brought into contact with the outer circumference of the inner cylinder 1, is provided for the innerend of the outer cylinder 2 outwardly coupled with the inner cylinder 1 in such a way as to be freely slid, and a second retaining projected part 7, is provided for the outer end 22 of the aforesaid outer cylinder, which is located over a position located in a place outer from the second sealing member 14 of the outer cirycumferential surface 41 at the end part of the second pipe line 4.
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