| 摘要 |
PROBLEM TO BE SOLVED: To achieve tightening force in a design-based necessary range in spite of generating design error or installation error in a joint comprising a male part 11 on one joint surface with a roughly T-cross section fitted into a female part 13 on the other joint surface with a groove with a roughly T-cross section to generate tightening force by close contact of a flange 21 of a roughly T-part of the part 11 with a jaw part 19 of a roughly T-part of the groove in the part 13. SOLUTION: For sliding a contact part 23 which will cause contact at the female part 13 to be separated, a slide surface 25 is formed in an engagement direction. On the slide surface 25, a holding part comprising a key 27 and a key groove 29, for example, is provided, so rupture is generated when above contact gets large to exceed a specified value to generate slide separation.
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