| 摘要 |
PROBLEM TO BE SOLVED: To provide an insert for versatile use that can be mounted without rotating a bolt and a rod-shaped metal fitting. SOLUTION: In the insert for concrete, gear-lock rings 10 where elastic locking pieces 12 in which a tip 13 is bent toward the axial center for forming are arranged in a ring shape are overlapped in the axial direction at specific intervals for accommodating into a cylindrical body 1 with an insertion path 5 for receiving an engagement part 31 of a rod-shaped metal fitting 30, and the engagement part 31 of the rod-shaped metal fitting 30 being inserted into the body 1 is elastically engaged to the elastic locking piece 12 of the locking ring 10.
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