| 摘要 |
PROBLEM TO BE SOLVED: To solve problems that, since a door moves by a prescribed distance toward a door opened side when one door is opened, an opening resistance due to a friction is apt to be generated in the door and a main body side in contact with the door such as a part for supporting the door upon movement of the door so that a load when the door is opened is larger than that of an ordinary hinged door, and that the opening direction of the door is seriously different from the moving direction of the door so that the door is hardly assuredly moved and the door opening movement is uneven. SOLUTION: The door 2 for opening and closing the opening part is provided so as to be engaged with and disengaged from the periphery of the opening part. The door 2 is separated by a prescribed space from the periphery of the opening part by a lever means. The lever means has a resilient function for the separating movement.
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