| 摘要 |
A device for holding sheets, cards or the like, capable of being applied on a support S includes a relatively stiff front plate 1, a pellet 4, elements 7 for fixing face 5 of pellet 4 onto face 2 of front plate 1, at least two elastic tabs 11, 12 and elements for mounting both tabs cooperatively with the front plate 1 so that these tabs are able to apply, through a first one 31, 32 of both their ends, elastic forces on points located on two distinct lines 13, 14 against a reaction exerted by their second end 33, 34 on the first face 2 of front plate 1, and so that the cylindrical volume 15 generated by a generatrix G substantially perpendicular to face 2 of front plate 1 and resting on the convex polygon 16 formed by both lines 13, 14 and two straight lines 17, 18 joining both ends 19, 21-20, 22 of both these lines 13, 14, respectively, has a cross-section at most equal to the surface area of face 2 of front plate 1 and greater than the surface area of face 6 of pellet 4, and so that the pellet 4 is located within the cylindrical volume 15, substantially at its center.
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