| 摘要 |
A handheld electronic device ( 300 ) mainly comprises a cover ( 310 ), a main body ( 320 ), a monitor ( 328 ) mounted on the main body, a keyboard ( 318 ) mounted on the cover and a hinge structure ( 330 ) to which pivot portions ( 312 ), ( 322 ) of the cover and main body are hinged. The pivot portions have teeth ( 314 ), ( 324 ) on circumferential peripheries thereof. The teeth mesh with each other. The cover can rotate for 360 degrees relative to the main body thereby moving from a first position to a second position, wherein at the first position, the cover abuts against a top surface ( 326 ) of the main body, and at the second position, the cover abuts against a bottom surface of the main body. The trajectory of the cover during its rotation relative to the main body follows a predetermined path.
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