| 摘要 |
PURPOSE: An opening/closing unit of a portable device is provided to reduce the friction in opening/closing by applying a rotation movement type. CONSTITUTION: A front unit(100) and a rear unit(200) of a portable device are opened/closed in a sliding type. An opening/closing unit of the portable device includes a rotation unit(300) and a rotation unit fixing unit(350). The rotation unit is interposed between the front unit and rear unit, and is formed in a disc type. The rotation unit fixing unit is each formed in the front and rear units, and is provided as a shaft rotation unit of the rotation unit. A disc holder is formed in one of the rotation unit fixing units, and a rotation shaft(311) is formed in the other of the rotation unit fixing units.
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