Abstract
A shelf frame for a rack of shelves includes an elongated body; a ledge extending perpendicularly from a bottom edge of the elongated body, the ledge having a width equal to a height of the elongated body; an elongated enhancement disposed along a top edge of the elongated body, the enhancement being bent toward the ledge; two upright extensions disposed at two ends of the elongated body respectively; and a plurality of fasteners disposed in each of the two upright extensions. The two upright extensions and the elongated body are on the same plane. Each of the two upright extensions has a length equal to twice of the height of the elongated body.
Claims
1. A shelf frame for a rack of shelves, comprising: an elongated body; a ledge extending perpendicular from a bottom edge of the elongated body, the ledge having a width equal to a height of the elongated body; an elongated enhancement disposed along a top edge of the elongated body and being distal from the ledge, the elongated enhancement bent toward the ledge; two upright extensions disposed at two ends of the elongated body respectively; and a plurality of fasteners disposed in each of the two upright extensions, wherein each of the plurality of fasteners includes a neck and a head, the head having a diameter greater than that of the neck; wherein the two upright extensions and the elongated body are on the same plane, and wherein each of the two upright extensions has a length equal to twice of the height of the elongated body.
2. The shelf frame for a rack of shelves of claim 1, further comprising two cuts, each cut disposed between an end of the ledge and one of the two the upright extensions, respectively.
3. The shelf frame for a rack of shelves of claim 1, wherein the ledge and the two upright extensions each have curved corner edges.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) FIG. 1 is a perspective view of a shelf frame for a rack of shelves according to the invention;
(2) FIG. 2 is another perspective view of the shelf frame;
(3) FIG. 3 is a side elevation of the shelf frame;
(4) FIG. 4 is a top view of the shelf frame;
(5) FIG. 5 is a perspective view of the four shelf frames mounted on a shelf of a rack of shelves in a first preferred embodiment;
(6) FIG. 6 is a perspective view of the four shelf frames mounted on a shelf of a rack of shelves in a second preferred embodiment; and
(7) FIG. 7 is a perspective view of the four shelf frames mounted on a shelf of a rack of shelves in a third preferred embodiment.
DETAILED DESCRIPTION OF THE INVENTION
(8) Referring to FIG. 1, a shelf frame 10 for a rack of shelves in accordance with the invention comprises an elongated body 11, a ledge 12 extending perpendicular from a bottom edge of the elongated body 11, the ledge 12 having a width equal to the height of the elongated body 11, an elongated enhancement 13 extending along a top edge of the elongated body 11 and being distal from the ledge 12, the enhancement 13 being bent toward the ledge 12, two upright extensions 14, extending from each of two ends of the elongated body 11 respectively, and two cuts 15, each cut disposed between an end of the ledge 12 and the respective extension 14. Each corner of the ledge 12 and the extension 14 is curved for the purpose of preventing the hand of a user holding the shelf frame 10 from being hurt.
(9) The ledge 12 has a width equal to the height of the elongated body 11 and the extension 14 has a length equal to twice of the height of the elongated body 11. For the rack having the same height, regarding the shelf frame 10, a horizontal height of the ledge 12 is irrespective of downward assembly of the extensions 14, upward assembly of the extensions 14, or a combination thereof. In other words, the extensions 14 and the elongated body 11 of any shelf of the rack are on the same vertical plane.
(10) Referring to FIG. 2, the extensions 14 and the elongated body 11 are on the same vertical plane. A plurality of fasteners 16 are provided at the extensions 14. The fastener 16 includes a neck 161 and a head 162 having a diameter greater than that of the neck 161.
(11) Referring to FIGS. 3 and 4, the enhancement 13 has a predetermined thickness after being bent. Thus, the enhancement 13 can increase the structural strength of the elongated body 11 for support.
(12) Referring to FIG. 5, in a first preferred embodiment a rack of shelves having four posts 20 are shown in which the ledge 12 of each of the four shelf frames 10 is mounted on a bottom of the shelf frame 10, and a top of the elongated body 11 has an elevation greater than that of the ledge 12 so that the elongated body 11 can serve as a raised limit member.
(13) Referring to FIG. 6, in a second preferred embodiment a rack of shelves having four posts 20 are shown in which the ledge 12 of each of the four shelf frames 10 is mounted on a top of the shelf frame 10, and a top of the elongated body 11 has an elevation equal to that of the ledge 12. Thus, the elongated body 11 cannot serve as a raised limit member.
(14) Referring to FIG. 7 in conjunction with FIG. 3, in a third preferred embodiment a rack of shelves having four posts 20 are shown in which the shelf frames 10 are mounted on the rack of shelves in a mixed mode. In detail, the extensions 14 of two shelf frames 10 are downward mounted on the rack of shelves, and the extensions 14 of the other two shelf frames 10 are upward mounted on the rack of shelves. The fasteners 16 are used to secure the shelf frames 10 to the posts 20. The ledge 12 has a width equal to the height of the elongated body 11 and the extension 14 has a length equal to twice of the height of the elongated body 11. Thus, the extensions 14 and the elongated body 11 of any shelf of the rack are on the same vertical plane. A shelf 21 is mounted on the ledges 12 and there is no significant height difference between the shelf 21 and the ledges 12. A plurality of articles 221 are placed on the shelf 21. It is possible to push the articles 221 through the shelf frames 10 because the shelf frames 10 do not serve as a limit member. This has the advantage of being able to place the articles 221 on the shelf 21 or pushing the articles 221 on the shelf 21. Another article 222 is also shown placed on the shelf 21 and is limited by both the elongated body 11 and the enhancement 13. Thus, the article 222 is prevented from falling. It is envisaged by the invention that a user may mount the shelf frames 10 in the mixed mode depending on a desired application.
(15) While the invention has been described in terms of preferred embodiments, those skilled in the art will recognize that the invention can be practiced with modifications within the spirit and scope of the appended claims.
