| 摘要 |
PROBLEM TO BE SOLVED: To improve working efficiency by fastening sleeves by means of fasteners wound around the outer peripheries of these sleeves and providing display parts of the displaying fastening positions on the outer peripheries of at least one of the sleeves. SOLUTION: The sleeves 11, 12 house the junctures of the optical fibers drawn out of optical fiber cables 3 therein and constitute separable and integratable two split structures. The outer peripheral surfaces of the sleeves 11, 12 are provided with block parts 14 comprising plural projecting lines (rubs) 13. The display parts 15 are formed between the projecting lines 13 on outer peripheral surface of the one sleeve 11. The display parts 15 are so formed that the winding and fastening positions of the fasteners 16 for fastening the sleeves 11, 12 may be displayed according to the necessary member of pieces necessary for fastening by the symbols, such as A and B, formed to recess from the outer peripheral surface. For example, the sleeves 11, 12 area fastened by winding the fasteners 16 in the position where the symbol B of the display parts 15 is displayed. |
