| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint structure of fireproof heat-insulating panels 10 considerably improving fireproof heat-insulating property in spite of being simple in structure and low in cost.SOLUTION: A first joint end face 11 and a second joint end face 12 are allowed to abut each other to join fireproof heat-insulating panels 10. At this time, the first joint end face 11 is formed with a large groove part 112, and the bottom face of the large groove part 112 is formed with a small projection 113. The second joint end face 12 is formed with a large projection 122 fitted to the large groove part 112, and a small groove part 123 fitted to the small projection 113. The large projection 122 and the small groove part 123 are fitted to the large groove part 112 and the small projection 113 respectively to form a two-stage rugged fitting structure. A heat passage between the joint end faces 11, 12 is formed in more complicated labyrinth shape to improve fireproof heat-insulating property. |
