| 摘要 |
PROBLEM TO BE SOLVED: To prevent a sliding door from easily derailing from a guide rail while the sliding door can be easily supported by the guide rail from the forward side. SOLUTION: In this storage chamber, at least two long spacers 24 to prevent wheels 22 from rising, exceeding a riser piece 9 and derailing from a wheel guide groove 7 are mounted on an upper part of the wheel guide groove 7 of upper and lower guide rails 3 forward of the wheel guide groove 7 not covered by a sliding door 4 with the sliding door 4 moved to the most right or left.
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