| 摘要 |
An information processing unit such as a folding type mobile phone whose first casing having a display and second casing having buttons are connected by a hinge. A first fixing mechanism of the hinge temporarily fixes the first and the second casing by a predetermined holding force when an opening angle between the first and the second casing is a first degree of opening which is smaller than 180°. A second fixing mechanism of the hinge locks the first and the second casing by a holding force stronger than the holding force at the time of temporary fixing when the opening angle is 180°. This information processing unit can be opened from the closed state to the temporary fixed state with a light force, from the temporary fixed state to the lock state with a medium force, and can be closed from the lock state to the temporary fixed state with a heavy force.
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