| 摘要 |
PROBLEM TO BE SOLVED: To provide a covering structure for a screw hole, which can cover the opening of the screw hole in the longitudinal direction which is formed on the outer surface in the longitudinal direction. SOLUTION: The screw hole 2 having a nearly C-shaped cross section is provided in the longitudinal direction on the outer surface of an extra-long plate-like material 1 formed through aluminum extrusion. The opening 3 is formed in the screw hole 2 in the longitudinal direction, and the cover 4 having a nearly inverted C-shaped cross section which is formed through aluminum extrusion is brought into engagement with the screw hole 2 from outside along its entire length in the longitudinal direction. Thus, the opening 3 formed in the longitudinal direction of the screw hole 2 is covered. COPYRIGHT: (C)2011,JPO&INPIT
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