| 摘要 |
An improved self-lifting apparatus for a box cover including a bent bar locator on the box cover with both ends bended to accommodate an elastic component. The elastic component is provided with extended arms on both ends, one end pressing the bent bar and the other end being inserted into a hole of the box, thereby simplifying the production procedure and allowing box cover to be lifted automatically. With the elastic component, the bent bar is usable as a file holder in the box and the box can be used for a longer period of time.
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