| 摘要 |
PURPOSE: To maintain the transmission characteristic of an optical fiber cable in a good state by preventing falling-off of a hinge pin from damaging an optical fiber core wire, to facilitate handling the hinge pin during inserting/taking out of the same, to reduce costs by reducing the number of parts and to facilitate parts management. CONSTITUTION: Another housing tray 1 is laid on a housing tray 1 in a lowest stage, the upper part bearing 9 of the housing tray of the lower stage and the lower part bearing 10 of the housing tray of the upper stage are aligned with each other, the inserting part 13a of a hinge pin 13 is inserted into the axial holes 11 and 12 of these so as to freely turnably connect the upper and lower trays 1 with each other and the finger operating part 13b of the hinge pin 13 is fixed by a pin fixing part 16. The stopper pedestal 14 of the upper bearing 9 is formed having an inclined angle so as to keep the opening angle of the housing tray 1 at 100 degrees or more when a housing tray 1 is rotated and opened after housing work. |
