| 摘要 |
PROBLEM TO BE SOLVED: To provide a guide rail construction with improved fireproof performance.SOLUTION: In an internal space formed between a first side 30 on a side closer to an outer wall and a second side 31 facing an outdoor space of a guide rail 3, a reinforcement plate formed of a material having higher melting point than a material forming the guide rail 3 is provided so as not to project to a guide space G at least at a part of an inner surface of a part facing the outdoor space including the second side 31. A portion of the reinforcement plate provided on the inner surface of the second side 31 has width dimensions so as to face a slat end accepted in the guide space G. In the internal space of the guide rail 3, a storage space extending in a height direction is located so as not to project to the guide space G, and in the storage space, a thermal expansion fireproof member 8 extending in the height direction is stored so as not to project to the guide space G under room temperature. |
