| 摘要 |
PROBLEM TO BE SOLVED: To connect a corrugate pipe as required in simple constitution. SOLUTION: This coupler is furnished with a coupler main body 2 having a through hole 8 and a female screw part 26, a nut 4 having a through hole 34 and a male screw part 36 to be screwed in the female screw part 26 of the coupler main body 2 and a spacer 6 to hold the coupler main body 2 and the nut 4 in a specified positional relation. The nut 4 has a nut main body part 30 and a plural number of engagement click parts 32 integrally provided on the nut main body part 30 with intervals in the peripheral direction, a plural number of the engagement click parts 32 are provided free to extend and contract, the coupler main body 2 has a shoulder part 12 directed to the side of the nut 4, and a surface of the shoulder part 12 of the coupler main body 2 is constituted so as to provide larger frictional force than a surface of the engagement click part 32 of the nut 4.
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