| 摘要 |
A device having legs and a horizontal plate includes two outer legs, two inner legs pivotally disposed between the two outer legs and a plate pivotally disposed between the two inner legs, all of the outer legs, the inner legs and the plate being made by plastic molded injection in a mold simultaneously, each of the outer legs having a first upper hole, a first lower hole and a first slot respectively defined therein, each of the inner legs having a first stud extending therefrom and extending through the first upper hole, a second hole and a second slot respectively defined in each of the inner legs, the plate having a second stud extending laterally therefrom and inserted through the second hole and the first lower hole, a third stud extending laterally from each of the two sides of the plate and inserted through the second slot, a sleeve with a bottom being respectively securely mounted to the first stud and the second stud by threading a bolt therethrough.
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