| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an opening and closing lid that obtains a tall music score stand even if the depth of a case is short. <P>SOLUTION: The opening and closing lid is provided with the case one long side of which is an operation side and the other long side of which is a back side, a first opening and closing lid and a second opening and closing lid that is formed by dividing the opening face of the case into two so that the operation side is shorter and the back side is longer to open and close it regarding a short direction, a hinge coupling these first and second opening and closing lids with rotary motion, an arm shifting the first opening and closing lid along a circular arc, a stay shifting a position of a supporting axis bearing the second opening and closing lid with the rotary motion, linked to the shift in the circular arc of the first opening and closing lid, a slide sliding a position of the supporting axis to the side of the rotary motion of the second opening and closing lid in a state where the direction of a board of the second opening and closing lid is almost parallel with the direction of gravity, and a spring giving unilateral and elastic rotary biasing force to the stay. <P>COPYRIGHT: (C)2004,JPO</p> |
