Patent attributes
A portable information device is capable of securing the appearance quality and the durability of products while having a foldable configuration. The portable information device has a backbone member provided throughout and between the inner surface of one edge portion of a first chassis member and the inner surface of one edge portion of a second chassis member so as to cover a gap between the one edge portion of the first chassis member and the one edge portion of the second chassis member connected by a hinge mechanism. The backbone member is provided to the inner surface of the one edge portion of the first chassis member so as to be slidable in an X direction from the second chassis member to the first chassis member along the inner surface, and is non-slidably fixed to the inner surface of the one edge portion of the second chassis member.