| 摘要 |
A second enclosure defines the backside superposed on a first enclosure for relative rotation around a rotation axis set perpendicular to the front surface of the first enclosure in an electronic apparatus. First, second and third flat surfaces are defined on the backside of the second enclosure at positions inside the contour of the second enclosure. The receiving pieces receive the first flat surface when the second enclosure is set in the reference attitude. When the second enclosure is set in the lateral attitude by rotation by plus or minus 90 degrees, the second flat surface or the third flat surface is received on the receiving pieces behind the second enclosure. Even if friction resulting from the contact roughens the first, second and third surfaces, the asperity and scratches on the surfaces are hidden behind the second enclosure.
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