| 摘要 |
PROBLEM TO BE SOLVED: To connect ceiling bars, even if they are cut off, by using a general-purpose tool. SOLUTION: In a connection structure of ceiling bars 3 in which the plurality of ceiling bars 3 each having, on a lower end of their longitudinal piece 3a, a lateral piece 3b capable of supporting a ceiling board or an installation/apparatus, an upper end part of the longitudinal piece 3a being supported by members in the ceiling, are connected to each other by means of connecting metallic parts 4 disposed along side surfaces of longitudinal pieces 3a of neighboring ceiling bars 3, a groove-shaped screw-in part 8 opened sidewise and continuing longitudinally of the ceiling bar 3 is provided in a side surface of each longitudinal piece 3a, and screws 9 inserted in insertion holes 11 provided in each connecting metallic part 4 are screwed into the screw-in part 8, whereby the connecting metallic part 4 is fixed to the ceiling bar 3. Because each ceiling bar 3 has a same cross-section over the entire length, the number of processes in a factory is decreased and length adjustment can be easily performed. Also, length adjustment at a work site can be easily performed by cutting only. Because the connecting metallic parts 4 are fixed to the ceiling bars 3 by screwing the screws 9 in the screw-in parts 8, work can be simply executed by using a general-purpose tool.
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