Patent ID: 7933638

Claim:
A portable terminal comprising: a first casing and a second casing which have inner side surfaces capable of opposing to each other, respectively; and a hinge which has a first axis in parallel to the inner side surfaces of the first casing and the second casing and a second axis orthogonal to the first axis, and couples the first casing and the second casing, wherein the hinge is arranged such that the first casing and the second casing are rotatable around first axis from a folded state where the inner side surfaces of the first casing and the second casing are approached to each other to an opened state where the inner side surfaces of the first casing and the second casing are separated, in each of the folded state and a bent state in which the inner side surfaces of the first casing and the second casing are disposed in parallel to each other, the first casing and the second casing are made rotatable relatively around the second axis, wherein the portable terminal further comprises a first magnetic material, a second magnetic material and a third magnetic material which are provided at the first casing and which generate magnetic forces in parallel with the inner side surfaces; and a first magnetic sensor, a second magnetic sensor and a third magnetic sensor which are provided at the second casing so that directions of detection magnetic fields thereof are in parallel with the inner side surfaces, the first magnetic material and the first magnetic sensor are disposed at positions symmetrical with respect to the first axis, the second magnetic material and the third magnetic material, and, the second magnetic sensor and the third magnetic sensor are disposed on a circumference with a same radius around the second axis, respectively, a direction of the magnetic force generated by the second magnetic material and a direction of the magnetic force generated by the third magnetic material are orthogonal to each other, a direction of the detection magnetic field generated by the second magnetic sensor and a direction of the detection magnetic field generated by the third magnetic sensor are orthogonal to each other, when the first casing is rotated by 90 degrees around the second axis, the direction of the detection magnetic field of the second magnetic sensor coincides with the direction of the magnetic force of the second magnet material, and when the first casing is rotated by 180 degrees around the second axis, the direction of the detection magnetic field of the second magnetic sensor coincides with the direction of the magnetic force of the third magnet material and the direction of the detection magnetic field of the third magnetic sensor coincides with the direction of the magnetic force of the second magnet material.