| 摘要 |
A removable apparatus for mounted in an opening of a casing includes an upright substrate, two horizontal plates and two vertical plates. The substrate is dimensioned in correlation with dimension of the opening of the casing. The horizontal and vertical plates are formed around the substrate. Each vertical plate includes a body and an elastic sheet. The body has a hole, a front edge and a rear edge at opposite sides of the hole. The elastic sheet has a gentle uphill section extending from the front edge of the body and a sharp downhill section extending from the gentle uphill section. The sharp downhill section is close to the rear edge of the body and hung over the hole of the body and the gentle uphill section has a length larger than that of the sharp downhill section. |
