| 摘要 |
PROBLEM TO BE SOLVED: To adjust the height from a butt end surface of a folding door by a screwdriver, and to prevent follow-up rotation caused by opening-closing of the folding door. SOLUTION: An upper runner 1 having a runner body 6 for traveling on a traveling rail 2, a runner installing metal fitting 7 fixed to an overhang door upper part and a connecting shaft 8 for connecting the runner body 6 and the runner installing metal fitting 7, the runner installing metal fitting 7 is provided with a case 20, a height adjusting horizontal gear member 21 rotatably arranged around a horizontal shaft in the case by facing a screwdriver engaging surface to the butt end surface side and a vertical gear member 22 rotatably arranged around a vertical shaft in the case 20 in a state of meshing with a gear of the height adjusting horizontal gear member 21 and penetrating the connecting shaft 8 along the axis in a threadedly engaging state. A lower end head part 8b of the connecting shaft 8 is fitted to a connecting shaft head part fitting hole 20f in the case 20. The connecting shaft 8 is irrotationally held around the axis.
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