| 摘要 |
PROBLEM TO BE SOLVED: To provide an opening part device that forms no gap between sliding doors and a frame body of a double hung window, which has an upper sliding door and a lower sliding door in level with each other, in a case of a fire.SOLUTION: An upper sliding door 2 and a lower sliding door 3 are accommodated in a frame body 1, and each of the upper sliding door 2 and the lower sliding door 3 has a panel body 5 accommodated in a doorframe body 4. The lower sliding door 3 is disposed in a closing state below the upper sliding door 2 and in the same plane with the upper sliding door 2, and the frame body 1 has an outdoor opposite surface part 11d opposed to an outdoor side face of the doorframe body 4, and is provided with an airtight material 11e, which abuts on the outdoor side face of the doorframe body 4, and a heating foamed material 11f, which is disposed at a position outside the airtight material 11e in an aspect direction along a length of each frame material, on the side of the outdoor opposite surface part 11c which faces the indoor side. |
