| 摘要 |
PROBLEM TO BE SOLVED: To facilitate attaching onto a concrete structure, and allow reusing repeatedly. SOLUTION: This accessory 1 consists of a cylindrical insertion body 4 inserted into a through hole 3 formed in the concrete structure 2, and a reversedly-tapered pressure contact rod 5 assembled vertically movably in an inner face of the cylindrical insertion body 4. Plural expanding slots 7 are formed in a cylindrical part 6 of the body 4, and plural elastically deformable elastic pieces 8 are formed between the slots 7. The pressure contact rod 5 has a screw rod 10 projected from the cylindrical insertion body 4, and the each elastic piece 8 is expanded outwards in a reversely-tapered part 5B of the pressure contact rod 5 by tightening a nut 13 screwed to the screw rod 10. The respective elastic pieces 8 are brought into pressure-contact thereby with an inner circumferential face of the through hole 3 to prevent the cylindrical insertion body 4 from coming off in the through hole 3.
|
