| 摘要 |
PROBLEM TO BE SOLVED: To firmly fix a door roller in position relative to an installation fitting hole in a sliding door so that it will not be rotated nor displaced. SOLUTION: In the installed structure of the door roller, the door roller 1 comprising a door roller 4 contained within a case 2 is fitted into the installation fitting hole 10 formed at the corner of the sliding door H and having an opening over an L-shaped range from an upper/lower surface to a side end face, and is fixed in position by a screw 8 threaded into the sliding door through a through hole in a screw seat plate 2A provided to project integrally from the side end face of the case 2. A rotary displacement preventing linear projection 9 whose amount of projection increases in an approximately horizontal direction from the position of the depth of a fit to the side end face is formed on the side face of the case 2 of the door roller 1 over a predetermined area, and the door roller 1 is horizontally inserted into the installation fitting hole 10 and installed.
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