| 摘要 |
A sectioned, roller type extensible and retractable enclosure for open bed vehicles employs a spring mechanism through which the slats of the cover are maintained in tension (in the direction of the length of the cover and away from the roll) during rotation of the stowage roller. As a result of this tension, the slats of the cover are effectively prevented from drooping as they are unwound from the roll and enter the guide channels, so that the unwanted bunching of the slats does not occur.
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