| 摘要 |
<p>A paper-retaining mechanism (100, 200, 300, 400, 500) comprises a base (102,202,303,402,502), two posts (106, 206, 306, 406, 506) secured to the base, a pair of arches (108, 208, 308, 408, 508) joined with each other for simultaneous movement, and the arches are movable relative to the posts between a closed position in which the arches are in contact with the posts to form two closed rings and an open position in which the arches are out of contact with the posts to open the rings, and a lever assembly (120, 220, 420, 520) operable to move the arches between the closed position and the open position, and the lever assembly includes a lever (122, 222, 322, 422, 522) and a wheel (130, 230, 330) engaged with each other, and when the arches are in the closed position, the lever is pivotable in a first direction (G, H, R, S, W) to move the wheel to rotate in the first direction to allow the arches to move to the open position, and when the arches are in the open position, the lever is pivotable in the first direction to move the wheel to rotate in the first direction to move the arches to the closed position, and the lever is pivotable about an axis (L1-L1, L2-L2, L3-L3, L4-L4, L5-L5) about which the wheel member is also rotatable.</p> |
