DE29621679U1 - Shelf - Google Patents

Description

(17 732) Shelf

The innovation relates to a shelf, in particular for refrigeration and fresh-keeping cells, consisting of a flat box-shaped support body delimited by side walls, the support surface of which is provided with means for surface stabilisation ¹ .

Such standard shelves are known and in use, so that no special written proof is required in this regard. As a rule, such shelves, which can be attached to corresponding frames or side-wall ladders, are made of bent stainless steel sheet or other surface-treated sheet material. In order to stabilize the actual supporting surface of such shelves against deflection, for example, parallel slots are punched and their edges are slightly bent downwards in a rounded manner. Apart from the weight and the relatively high material costs, such shelves have the disadvantage that, despite the use of sophisticated materials, they are subject to the risk of corrosion due to unavoidable scratching when exposed to acidic media. For this reason, shelves have been proposed that consist of two aluminum longitudinal profiles in combination with plastic for the actual supporting surface. Given the size of such shelves (usually 0.5 x 1.5 m^), this requires expensive injection molding tools.

tools and correspondingly large and heavy injection molding machines. The surface protection of the aluminum profiles, for example through anodizing, is again impaired by the fact that certain processing steps, such as notching and recesses, usually always have to be carried out.

The innovation is based on the task of improving a shelf of the type mentioned above in such a way that it is equally characterized by low weight, inexpensive material, scratch resistance or corrosion resistance and can be manufactured without complex molding tools.

This task is solved with a shelf of the type mentioned at the beginning according to the innovation in that both the supporting surface, the side walls and the means for surface stabilization are made of GRP cut-outs, all of which are arranged at 90° to one another on the supporting body and are connected along their connecting edges at least in one edge side groove with GRP-suitable adhesive. Advantageous further developments arise from the subclaims.

The use of cheap GRP sheet material was in itself an obstacle because such material cannot be bent and such floors have to be assembled from individual cuts. However, it has been shown that by using assembly templates, the wing cut, the sidewalls and the stabilization strips can be

cut-outs can be easily assembled and automatically glued together, so that such "fully plastic floors" can be manufactured with low labor costs, with which, depending on the material thickness, the same load-bearing capacity can be achieved as with floors made of thin sheet metal. For example, a floor measuring approx. 0.5 x 1.5 m^ using GRP sheet material with a wall thickness of 2 mm for the subframe and a wall thickness of only 1 mm for the supporting surface showed sufficient stability for the intended use in cooling and fresh-keeping cells for storing food.

The new type of shelf and its advantageous further developments are explained in more detail below using a drawing of an example of implementation.

It shows

Fig. 1 perspective view of the shelf from above;

Fig. 2 perspective view of the shelf from below;

Fig. 3 shows a perspective and enlarged view of an area of the floor from below and

Fig. 4 is a partial section along line IV-IV in Fig. 2.

The shelf still consists of a flat, box-shaped support body 1, limited by side walls 2, whose support surface 3 is provided with means 4 for surface stabilization. In the view according to Fig. 1,

Such a shelf is practically no different from those made from box-shaped bent sheet metal cuts. In contrast to these, however, it is now essential for such a shelf that both the supporting surface 3, the side walls 2 and the means 4 for surface stabilization are made from GRP cuts, all of which are arranged at 90° to one another on the supporting body 1 and are connected along their connecting edges 5 at least in one edge groove 6 with GRP-suitable adhesive.

With regard to the edge side fillets 6, reference is made to Fig. 4, which also makes it clear that the bonding between the side walls 2, the wing 3 and the means 4 for stabilization is sufficient on only one side.

The wing 3 is provided with parallel slot cutouts 7 evenly distributed over the entire surface, whereby the means for surface stabilization in the form of GRP strip cutouts 9 are arranged under the slot intermediate webs 8.

Furthermore, it has proven to be sufficient for stability if, as can be seen in particular from Fig. 4, the strip cuts 9 are dimensioned with a lower height H than the side cheeks 2. For the purpose of simple and secure support on a frame (not shown), it is provided that the long side cheeks ²¹ project beyond the narrow side cheeks 2" and are provided with support recesses 11 open downwards in the projecting part 10.

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The shape and size of these recesses 11 ultimately depend on the conditions on the frame. If the frame construction requires this, the narrow side panels 2" could of course also protrude beyond the long side panels 2' and be provided with the recesses 11.

Since the four overhanging parts 10 have to take up the load, it is advantageous (see Fig. 3) for at least the end regions 13 of the longitudinal side cheeks 2' to be glued on the inside to an additional layer 14 made of the same material, which has corresponding support recesses 11 and which extends beyond the narrow side cheeks 2" into the side cheek frame 12.

In order to avoid a somewhat difficult to achieve exact flushness of the wing edges 3' with the side walls 2 and to meet the corresponding optical requirements, it is advantageously provided that the wing 3 projects over the frame 12 formed by the side walls 2 by a narrow edge. These edges 3' project over the side walls 2 by only 2-3 mm, for example.

It is also advantageous that all cut parts of the floor are made of GRP panel material with the same wall thickness, i.e. the manufacturer does not have to keep different material thicknesses in stock.

Claims (7)

(17 732) Protection claims: 1. Shelf, in particular for refrigeration and fresh storage cells, consisting of a flat, box-shaped support body (1) delimited by side walls (2), the support surface (3) of which is provided with means (4) for surface stabilization, characterized,
that both the supporting surface (3), the side walls (2) and the means (4) for surface stabilization are formed from GRP cut-outs which are connected along their connecting edges (5) at least in one edge side groove (6) with GRP-suitable adhesive. 2. Shelf according to claim 1,
characterized, that the supporting surface (3) is provided with parallel slot cutouts (7) evenly distributed over its entire surface, wherein the means for surface stabilization in the form of GRP strip cuts (9) are arranged under the slot intermediate webs (8). 3. Shelf according to claim 1 or 2,
characterized, that the means (4) for wing stabilization are dimensioned with a lower height (H) than the side walls (2). 4. Shelf according to one of claims 1 to 3,
characterized, that the longitudinal side cheeks (2 ¹ ) project beyond the narrow side cheeks (2") and are provided with support recesses (11) open downwards in the projecting part (10). 5. Shelf according to one of claims 1 to 4,
characterized, that the wing (3) projects beyond the frame (12) formed by the side walls. 6. Shelf according to one of claims 1 to 5,
characterized, that all cut parts of the floor are made of GRP panel material with the same wall thickness. 7. Shelf according to one of claims 4 to 6,
characterized, that at least the end regions (13) of the longitudinal side cheeks (2") are glued on the inside to an additional layer (14) made of the same material, which has corresponding support recesses (11) and which extends beyond the narrow side cheeks (2") into the side cheek frame (12).