| 摘要 |
PROBLEM TO BE SOLVED: To provide a drop-preventing device for protecting tube, which can be always speedily, surely and safely fixed. SOLUTION: The drop-preventing device comprises a pair of catching pieces 2, each having an approximately semi-cylinder-like shape to catch a protecting tube 51a/51b/51c each having a leg part 54a/54b on both sides. The catching pieces 2 are each connected on one side and disposed with catching members 3 protruding facing each other to catch the respective leg part 54a/54b on the other side. And the tips of the catching members 3 can be freely fastened through fastening means 5, 6. |
