| 摘要 |
PROBLEM TO BE SOLVED: To provide a coming-off protective ring 1 usable even in an environ ment where plastic is eroded, capable of increasing coming-off resistance manufacturable at a low cost, and allowing easy insertion of a subject body 16 to be prevented from coming off such as a pipe and a male screw body. SOLUTION: A circular part 2 and plural side surface pieces 3 are formed of a metal plate material, and cut and raised pieces 4 and 5 are formed by cutting and raising part of each side surface piece 3 inward. As the coming-off protective ring 1 is moved in one direction of axial line directions relatively to a ring pressure body 11, each side surface piece 3 is pressed to an inclined surface part 14 of the ring pressure body 11 to be deformed inward. Tips of the cut and raised pieces 4 and 5 bite an outer circumferential part of the subject body 16, thereby the subject body 16 is prevented from coming off from the ring pressure body 11. |
