| 摘要 |
PROBLEM TO BE SOLVED: To provide an airtight mechanism for a door capable of lowering an airtight member immediately before the completion of door closing operation and lifting the airtight member immediately upon the start of door opening operation. SOLUTION: A rod 31 is mounted in a laterally slidable manner to a door body 14. To be driven by the rod 31, an intermediate part of an arm member 32 is fitted to the rod 31, and one end of the arm member 32 is mounted in a swingable manner to the door body 14. A cam part 59 of a cam member 33 is engaged with the other end of the arm member 32, and a support part 55 of the cam member 33 is mounted in a swingable manner to the door body 14. The airtight member 36 is mounted in a swingable manner to an operating part 56 of the cam member 33 through a connecting member 34. When the door body 14 is closed, the tip 48 of the rod 31 is pressed by a door frame 12, and a clearance between the door frame 12 and the door body 14 is closed with the airtight member 36. Spring members 35 are interposed between the airtight member 36 and the door body 14. When the door body 14 is opened, the airtight member 36 is thereby drawn to the door body 14 side by the spring members 35. Door opening/closing force is reduced. COPYRIGHT: (C)2004,JPO&NCIPI
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