| 摘要 |
PURPOSE:To eliminate necessity for an independent setting place for the turn drive mechanism of a cover by pivotally mounting a link member in a movable plate end part, reciprocation-movably supported to internal surface side both side parts of a back cover unit, to a connecting arm and fixing it to a main unit side opening edge. CONSTITUTION:A pair of movable plates 5a, 5b are reciprocation-movably supported to both side parts in the internal surface side of a back cover unit 1A through a guide plate 6, and one end of a link member 9 is connected to the other end part of the paired movable plates 5a, 5b. The other end part of this link member 9 is pivotally mounted to a connection arm 2. The connecting arm 2 thus mounted is fixed to an opening edge in a main unit side. Both the movable plates are reciprocated with a back cover unit internal surface serving as a guide while moving each link member 9 in a groove 10 in the back cover unit 1A by turning a free end part of the cover 1 in a vertical direction. A turn mechanism of the cover 1 is arranged in internal space partitioned by reverse and obverse cover units 1A, 1B. In this way, independent space for setting up a turn drive mechanism can not be required at all. |
