| 摘要 |
<p>A self-adjusting clamping device is secured to a lid (34) of a box file to clamp documents (36) against an opposite wall (38) of the box. The device comprises a mounting plate (18), two limbs (10) and (12), and a base plate (22) formed from a single piece of stiff sheet material (e.g. fluted cardboard) and articulated by means of folds in the sheet. An elastic band (26) extends between the base and mounting plates to urge the limbs (10) and (12) together, so to cause an apex (16) of the generally triangular structure to bear against the documents (36).</p> |
