| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an expansion device with which an expansion device provided at the main body of computer can always keep a fixed attitude even when the state of installing the main body of computer is changed. SOLUTION: An expansion device 4 having an opening part 5 as an expansion slot is mounted and supported inside a circular opening window provided on the front face of the main body of computer. This expansion device 4 is composed of an outer drum 11 to be rocked vertically with an axial part 19 as a supporting point inside the opening window 3 and an inner drum 12 which can be circumferentially turned inside this outer drum 11 by a rotary roller 16 and has a weight 18, and the opening part 5 is provided on a front panel 13 of this inner drum 12. Even when the main body of computer is laterally or longitudinally set and further installed while being inclined back and forth, the expansion device 4 can be always held in the fixed attitude by the oscillation of outer drum 11 and the rotation of inner drum 12.</p> |
