| 摘要 |
PROBLEM TO BE SOLVED: To shorten installation range of a guide rail, for easy manufacturing and installing at low cost, not interfering with traffic of automobile and people, etc. SOLUTION: A single door body 7 comprising running wheels 23-25 is movably provided, in opening/closing direction, between a retracting part 8 for housing and a close position along a guide rail 5 installed on a ground 1 side. The guide rail 5 is installed at the retracting part 8. The end part of the door body 7 on the retracting part 8 side is provided with a plurality of guide rollers 26 which are arranged in opening/closing direction with a prescribed interval and guided in the opening/closing direction by the guide rail 5, and falling prevention engagement bracket 27 which engages with the guide rail 5 to prevent falling of the door body 7. COPYRIGHT: (C)2004,JPO
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