| 摘要 |
PROBLEM TO BE SOLVED: To provide a door device in which gentle closing movement is realized without using a special speed decreasing and offsetting device by delicate adjustment such as relaxation, at a proper position, of the acceleration of a sliding and moving door, the space saving of the upper section of a frame body is realized and the reduction of the cost of the device is realized. SOLUTION: A doorway side rail 6 and a door storage case side rail 7 are installed into an upper frame 5 under the state in which the rails stand laterally and upper and lower sections are displaced and a down-grade is formed on the doorway side. The downward side ends of the doorway side hung rail 6 and the door storage case side rail 7 are set in approximately the same height. A doorway side movable member 9 supported and guided by the doorway-side rail 6 is set up on the upper doorway side of a door body 8, and a door storage case side movable member 10 supported and guided by the door storage case side rail 7 is fitted on the upper door storage case side of the door body 8.
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