SOUND INSULATION DOOR DEVICE

摘要

PROBLEM TO BE SOLVED: To realize a door structure which can be opened or closed with a slight force without bothersome manipulation and has an excellent sound insulation performance. SOLUTION: First packings 8a, 8b are fitted to the upper rail 5 and the right and left stiles 6 constituting an opening frame 2 and a second packing 9 are fitted to the lower end of a door panel 3. These packings 8a, 8b close a gap between the door panel 3 and the opening frame 2 when closing the door panel 3. The discontinuous part in both the lower ends of the first packing 8a and both ends of the second packing 9 is closed by an airtight block 21.