Abstract: Protruding parts 33 are provided on a bottom surface 242 of a battery accommodating part 24 in a front part of a card accommodating part 30 provided in an inner wall part 241 of the battery accommodating part 24. A dimension H1 of protrusion of the protruding part 33 is set to be equal to or smaller than a height H2 from the bottom surface 242 to a lower end edge of an insert and detaching opening 31 of the card accommodating part 30. When a card 13 is accommodated in the card accommodating part 30, the card 13 can be inserted into the insert and detaching opening 31 of the card accommodating part 30 along the protruding parts 33 without lifting an end of the card 13. Thus, the card 13 can be easily accommodated in the card accommodating part 30.

Abstract: In a folding-type portable electronic device, a hinge has a structure of: that a rotating portion rotates along with a first enclosure around a rotational axis while the first enclosure is opened with respect to a second enclosure; that a part of the rotating portion of the hinge is disposed outside on at least one of side ends of the first enclosure; and that the rotational axis of the hinge is located on an extension of a base end of the second enclosure close to the hinge in both states where the enclosures are opened or closed. In the second enclosure, an end face of a base opposing the rotating portion is formed along an outer periphery of the rotating portion, and a projection projecting to the outside of the second side of the second enclosure opposite to its operation section is formed along an angular edge of the base.