Shelf for a trolley

Abstract

A shelf for a trolley comprising a plate providing a surface for carrying goods, such as potted plants and flowers, and hooks for mounting the shelf in the trolley. One or more of the hooks are formed from a metal strip bent about an axis extending perpendicular to the central plane of the plate.

Claims

1. A shelf for a trolley comprising a plate providing a surface for carrying goods and hooks for mounting the shelf in the trolley, wherein one or more of the hooks are formed from a strip bent about an axis extending perpendicular to a central plane of the plate, wherein the hooks comprise two portions of the strip, each of the portions comprise a notch, and the notches are horizontally aligned after bending the strip about said axis, thus forming downward facing hooks.

2. The trolley according to claim 1, wherein the hooks comprise two diverging portions of the strip.

3. The trolley according to claim 1, wherein the hooks comprise two parallel portions of the strip.

4. The shelf according to claim 1, wherein a first portion and/or a second portion of the strip extends along and/or in a first side and/or a second side of the plate.

5. The shelf according to claim 4, wherein the first portion of the strip extends along and/or in the first side of the plate and the second portion of the strip extends along and/or in the second side of the plate, the second side of the plate extending at a right angle with the first side of the plate.

6. The shelf according to claim 1, wherein a first portion of the strip extends in a channel or girder of the plate.

7. The shelf according to claim 6, wherein a second portion of the strip closes off an end of the channel or girder of the plate.

8. The shelf according to claim 1, wherein at least two hooks on horizontally opposite sides of the plate are identical and, when inserted into the plate, are horizontally mirrored.

9. The shelf according to claim 1, wherein a reinforcing and/or dampening material is positioned between two portions defining the hooks.

10. The shelf according to claim 1, wherein the strip is attached to the plate and forms a beam for transferring forces from a load on the shelf to the hooks.

11. The shelf according to claim 1, wherein two hooks are formed in the strip and located on or near opposite sides of the shelf, said hooks capable of directly supporting both the short sides of the plate and the long sides of the plate.

12. The shelf according to claim 1, wherein the shelf is rectangular and elongated and comprises the hooks at each corner.

13. The shelf according to claim 12, having a length in a range from 1250 to 1350 mm and a width in a range from 530 to 570 mm.

14. The shelf according to claim 12, wherein the hooks extend in a lateral direction.

15. The shelf according to claim 1, wherein the material of the strip has a yield strength of at least 500 MPa.

16. The shelf according to claim 15, wherein the material of the strip has a yield strength of at least 600 MPa.

17. A trolley for carrying goods, comprising a plurality of rectangular and elongated shelves according to claim 1 and a plurality of corner posts each provided with a series of openings receiving the hooks of the shelves.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

(1) The accompanying drawings, which are incorporated into and form a part of the specification, illustrate one or more embodiments of the present invention and, together with the description, serve to explain the principles of the invention. The drawings are only for the purpose of illustrating one or more embodiments of the invention and are not to be construed as limiting the invention. In the drawings:

(2) FIG. 1 is a perspective view of a trolley carrying a plurality of shelves according to the present invention.

(3) FIG. 2 is a detail of FIG. 1, showing a corner of a shelf hooked in a corner post of the trolley.

(4) FIGS. 3 and 4 are perspective top views of a shelf and a cross-sectioned shelf according to the present invention.

(5) FIGS. 5 to 7 show details of a hook portion of the shelf is a detail of the shelf shown in FIG. 3.

(6) FIGS. 8 to 10 show three different embodiments of a strip comprising a hook at each end.

DETAILED DESCRIPTION OF THE INVENTION

(7) FIGS. 1 and 2 show a trolley 1 for carrying goods, such as potted plants and flowers, comprising a rectangular and elongated frame 2 provided with four wheels 3 at its underside near each corner and a holder 4 for a post 5 at each corner. A post 5 is placed in each holder. In this example, the holders and posts all have a square cross-section with the posts having outer dimensions (width) that are slightly smaller than the inner dimensions of the holders. Thus, the posts are slidably and removably positioned in the holders in one of four positions. Each post has on one of its four sides a series of openings 6 and on the side opposite from the openings a slot 7 running the length of the post. A plurality of shelves 10 is mounted in the trolley.

(8) FIGS. 3 and 4 show a single rectangular and elongated shelf 10 suitable to be mounted in the trolley 1 shown in FIGS. 1 and 2. The shelf has a plate 11 providing a planar top surface 12 for carrying goods. A plurality of box girders 13 is formed on and/or attached to the bottom surface of the plate, to render the shelf sufficiently stiff and strong. The long and short edges of the plate are provided with raised edges 14.

(9) The shelf has a hooks 20 at each corner. With these hooks, the shelf 10 can be mounted at a selected height in the trolley by tilting the shelf, inserting a pair of hooks in openings at the selected height, lowering the shelf until it is horizontal and slightly shifting the shelf to insert the pair of hooks on the opposite side of the shelf in openings 6 in the posts 5 on the opposite side of the trolley 1.

(10) As shown in FIGS. 5, 6, and 8-10, the hooks 20 are made from a metal strip 21. In this example, the strip is made of resilient steel having a yield strength of 600 MPa, a thickness of 2 mm, and a height of 20 mm. At both ends, the strip is bent about an axis A extending in the height direction of the strip (perpendicular to the central plane of the plate in the finished shelf). Two notches 22 are provided near each end of the strip, which notches align after bending the strip about axis A, thus forming hooks.

(11) The strip is provided with a plurality of holes 23, which allow, e.g., clinching the ends of the plate to the strip, and four notches.

(12) In this example, the strip is bent, at each end, at three further positions and all about axes extending in the height direction of the strip, to form portions 24 for clinching the plate 11 to the strip 21 and providing an appropriate distance between the hooks 20 and the plate 11, portions 25 for closing off the ends of the box girders in or near the long sides of the plate 11 and portions 26 extending in the box girders in or near the long sides of the plate 11.

(13) The plate 11 is clinched to the strip 21 by folding edge portions of the plate over the strip and clinching the portions of the plate together through the openings 23 in the strip. Identical but mirrored strips are attached to each of the short sides of the shelf, as shown in FIGS. 3 and 8.

(14) The present shelf is a robust construction at relatively low weight and facilitates the manufacture of the shelves with little waste. By providing hooks, which, seen in a top view, each have two legs, one supporting a long side of the shelf and one supporting a short side, forces in the shelf are distributed more evenly. E.g., concentration of forces from a long side and a short side are avoided, e.g., when forces are transferred from a long to a hook via a short side, are avoided or at least reduced.

(15) The invention is not restricted to the above-described embodiments, which can be varied in a number of ways within the scope of the claims. For instance, instead of forming two hooks in a strip and providing two strips in a shelf, in an embodiment, hooks are formed from four (shorter) strips, i.e., one hook in each strip. Also, the strips(s) may comprises bends about axes at other angles. E.g., the strip 21 shown in FIG. 9 comprises at each end a bend about an axis B of 45 degrees, relative to the plate 11 in the finished shelf. It further comprises bends about an axis parallel to the plane of the plate, to raise the ends of the strip, e.g., to enable attaching, i.e., clinching, the plate to the strips at different heights. Also, in addition to one or more bent portions the strips(s) may comprise stepped or inclined portions 27, e.g., to match features in the plate.