DE9307955U1 - Shelf made of cardboard material - Google Patents

Description

Shelf made of cardboard material

The invention relates to a shelf made of punched and folded cardboard material, which consists of a rectangular flat part and an edge, the flat part

bordering parapet, which are folded out in one piece from a cut.

The task is to produce a shelf made of punched and folded cardboard material, for example two to four millimeter thick corrugated cardboard, which is connected to a central support frame in the form of a tiered stand and serves as a sales shelf. The shelf should, measured against the used

Material, high load-bearing and buckling strength. 25

The special design of the parapet is intended to reinforce the edge area and give the entire shelf a high effective cross-section with a comparatively high load-bearing capacity.

This task is solved with a shelf of the type mentioned above, in which a parapet overhang is arranged on the edge of the flat part of the cut to be used to form the parapet, which consists of

three parallel stripes, which are connected to each other by 35

are connected by bend areas, namely

- an outer parapet strip,

- an inner parapet strip,

- a connecting strip,

where the outer and inner parapet strips are folded in a V shape towards each other and the connecting strip is attached to the flat part, resting on it.

The above solution results in a very rigid parapet reinforcement that determines the strength of the shelf.

The invention can be further improved in that the connecting strips in the corner area are mitred, preferably at the same angle (45°) and the mitred cut edges are flush. This

further stiffening of the shelf is achieved, since the parapet together with the abutting connecting strips, especially in the corner area, creates a very rigid corner structure, which in particular prevents the shelf from bending "crookedly".

The V-configuration between the outer parapet strip and the inner parapet strip, which is essential for stiffening, is preferably made possible with a V-angle between 10 and 60°, preferably between 15 and 25°.

In order to obtain engagement areas for the tight pressing of the connecting strips, it is suggested that in the parapet inner strips in the bend area between

Parapet inner and parapet outer strips tongues or 30

other perforations are punched.

In order to improve the corner area aesthetically and mechanically, it is proposed to provide at least one bridging tab in the corner area, which protrudes from an outer parapet strip or an inner parapet strip and can be inserted into the V-configuration when the parapet is erected.

Cardboard is generally suitable as a material for the shelf; this can preferably also be covered with a visible layer, such as a white paper layer. In this case, it is only necessary to coat one side, since with normal folding the underside of the shelf is coated and the parapet, which is seen from the outside, also shows the coating.

Since the inside of the parapet rests on the connecting strip when the parapet is folded, the inside parapet strip can be between 7.5 and 15% narrower than the outside parapet strip.

An embodiment of the invention is shown in the drawing. The figures of the drawing show in detail:

Fig. 1 a shelf-specific

Cut-out made from cardboard material; Fig. 2 the corner formation repeated at all four corners;

Fig. 3 in detail the parapet bent to the parapet-25

got over.

In Fig. 1, a blank 1' for a shelf 1 shown in Fig. 2 is shown. The blank shows

in the middle a rectangular flat part 2, which is attached to 30

each of its four sides (only two are visible) has a parapet overhang suitable for forming a parapet 4. The parapet overhangs are made in one piece with the flat part 2 from the same cardboard material, for example 2 mm thick corrugated cardboard with one-sided lamination. The parapet overhang consists of three strips in total, namely an outer parapet strip 5, an inner parapet strip 6 and

a connecting strip 7. Between the strips 5 and

6 is a bending area 8 and between the strips 6 and

7 a bending area 9 is provided. As can be seen from Fig. 3

_ is the parapet outer strip 5 and the

The parapet inner strip 6 is bent into a V configuration with a bend angle α of approximately 15°. This bend angle can be between 10 and 60°, preferably between 15 and 25°. The connecting strip 7 is in turn bent from the V configuration in a similar way to a root symbol (�T") and then rests firmly on the flat part 2 via adhesive surfaces 10.

In the corner area, the connecting strips are mitred at an angle of 45°, resulting in two mitred cut edges 12, 12', which are flush with each other on the finished shelf and also form a stiffening element, since the wide, firmly connected connecting strip allows for "wind-skewing" adjustment

of the shelf is prevented.

In order to improve the corner formation aesthetically and mechanically, a connecting tongue 14 is attached to the parapet outer strip 5, which, as shown in Fig. 2, is inserted into the 25

V-shaped opening of the adjacent parapet section.

Furthermore, punched tongues 11 can be provided in the parapet, which improve handling as they allow for an intervention. Insert parts can also be attached here (not shown).

The material of the shelf is covered from the bottom with

a visible side layer, while the top 35

side only shows the raw surface of the cardboard material.

The stiffening is essentially provided by the V-shaped angle of the connected parapet outer and inner strips. Accordingly, depending on requirements, the spread angle of the V can be made larger or smaller, the height of the parapet can be adjusted, etc., whereby these measures affect both the intended use and the stiffening in the parapet area. Overall, a high-strength shelf can be produced with the aforementioned measures, whereby the material enables a cost-effective price calculation.

Claims (7)

AL claims: 1. Shelf made of punched and folded cardboard material, which consists of a rectangular flat part and a parapet bordering the flat part (3) on the edge, which are folded out in one piece from a blank, characterized in that to form the parapet (3) 15 One parapet overhang (4) at the edge of the flat part (2) is arranged, which consists of three parallel strips which are connected to one another by bending areas (8, 9), namely an outer parapet strip (5), an inner parapet strip (6), a connecting strip (7), in which the parapet outer and parapet inner strips are folded against each other in a V-shape and the connecting strip rests on the flat part (29) on this 25 is attached. 2. Shelf according to claim 1, characterized in that in the corner area the connecting strips (7) are mitred, preferably cut at the same angle (45°) and the mitred cut edges (12, 12') are in abutment. 3. Shelf according to claim 1 or 2, characterized in that the outer parapet strip and Parapet inner strips in the V-configuration form an angle between 10 and 60°, preferably between 15 and 25°. A2 4. Shelf according to claims 1 to 3, characterized in that tongues or perforations are punched into the parapet inner strips in the bend area between the parapet inner strips and the connecting strips. 5. Shelf according to one of the preceding claims, characterized in that in the corner area a bridging tab (14) which protrudes from an outside or inside of the parapet is formed and results in a corner bridging. 6. Shelf according to one of the preceding claims, characterized in that the blank on the (later) underside of the shelf is provided with a visible layer is laminated. 7. Shelf according to claim 1, characterized in that the inside of the parapet is approximately 7.5 to 15% narrower than the outside of the parapet.