| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat insulation door with double-hung screens provided with a simple and sturdy frame body structure and a water-tight structure which does not interfere with the vertical movement of the screen. SOLUTION: In the heat insulation door 1 with double-hung screens so constituted that screens 4, 5 are fitted to be vertically movable in the inside of a composite frame body 3 in which the outdoor side exposed part of a metallic frame 10 is covered with a resin frame 20, an outdoor guide frame 15 is integrally formed of only the metallic frame 10 and an indoor guide frame 25 is integrally formed of only a resin frame 20. An intermediate wall 60 is formed by mutually forming these adjacent side pieces to have substantially the same aspect width and bringing them into contact with each other. Further, the indoor guide frame 25 is supported by the outdoor guide frame 15 to form the support structure of the indoor guide frame 25. |
