| 摘要 |
A portable device is provided to hide unnecessary operating units in each usage state, thereby improving maneuverability as showing an exclusive appearance on a surface. A joint apparatus integratedly joints the second enclosure(20) to overlay the second enclosure with silhouettes of the first enclosure(10) and the third enclosure(30) at the first position. When the second enclosure moves to the second position from the first position, the joint apparatus enables the third enclosure to be exposed by limiting movement of the third enclosure to less than zero of movement of the second enclosure. When the second enclosure moves to the third position from the first position, the joint apparatus enables the first operator(11) to be exposed in an operable state by limiting the movement of the third enclosure to less than the movement of the second enclosure.
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