| 摘要 |
A hand held apparatus includes a base, a foldable cover, a positioning seat, an elastic surface and a cam. The positioning seat is mounted on the base. The elastic surface is mounted on the base. The cam is mounted on the foldable cover and touches the elastic surface. The cam further has a positioning pin at one end thereof, and the positioning pin is pivotally coupled to the positioning seat, such that the foldable cover has the ability to be elastically rotated relative to the base.
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