| 摘要 |
A rotatable carrier includes a detecting device attached to a casing, a housing rotatably supported on the casing to support such as displays, and a rotating device for rotating the housing relative to the casing, to rotate the displays toward selected or suitable directions. The housing includes an interacting member arranged to act on the detecting device, and to control the rotating device, and to prevent the housing from being over rotated relative to the casing. The housing includes an inner rack, and the casing includes a rotatable gear engaged with the inner rack of the housing, and driven by a motor.
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