Fastener for dismountably assembling laminar elements

Abstract

Fastener (4) for dismountably assembling laminar elements such as the bottom (2) and lateral (3) walls of containers, boxes (1) and the like comprising, at least, a tongue (6) having a widened head (6a) defining a neck (6b), which is located in one of the elements to be assembled and, at least, a groove (5) intended for receiving said neck (6b), located in the other element to be assembled, and whose width is comprised between the width of the neck (6b) and the width of the widened (6a) head; the groove (5) having, at least, an open side (7) where a resiliently displaceable retainer (8) is provided.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a fastener for dismountably assembling laminar or planar elements, which may be similar or different. The fastener may be used in laminar or planar elements such as the top, bottom, and side walls that form a box or container for transporting wine bottles, transporting foodstuff such as fruits or vegetables, transporting milk containers, etc.PRIOR ART[0002]Known in the art are boxes or container assemblies for various uses, such as for transporting fruits and vegetables. The boxes may include a number of essentially laminar elements that make up the bottom and lateral walls of the box. The laminar elements may be dismountably assembled by means of fasteners comprising grooves and tongues connected to said bottom and / or lateral walls. These boxes may incorporate lids, supports, connecting means with other similar boxes for stacking or piling them up, etc.[0003]Since these boxes or containers include a number of dismountable...

AI Technical Summary

Benefits of technology

[0017]For assembling the fastener when mounting the lid, the lid can bend without the need to break its tearable end sector because the mechanical strength of the weakened lines is not exceeded. To open the lid, the necessary force to break this end sector must be applied such that the tongue is set free to uncouple its neck from the groove and it is extracted through the hole created when the tearable end sector is detached.

Problems solved by technology

Since these boxes or containers include a number of dismountable elements, they only take up an essentially planar space when stored or transported.

This configuration of the fastener is disadvantageous in that once the boxes or containers are assembled, when they are stacked on top of one another and filled with a product for being stored and transported, the lower boxes bear the weight of all the higher boxes, and are not always able to support and resist the weight as intended.

Thus, a large portion of the product arrives at the destination in a totally destroyed state, and losses arise.

Additionally, repeated operations of assembly and disassembly cause wear, deformation, and loss of resistance both in the retention lip and in the groove, and the fastening becomes insufficient.

For this reason, when the product is transported (ground transportation and sea transportation) a large percentage of the boxes or containers do not withstand such conditions, and the product arrives at the destination totally destroyed, and losses again arise.

Generally speaking, perimeter fasteners are not very disassembly-proof, because the fastened parts necessarily must bend for their mutual interaction.

This fact imposes a limitation on their size, which is too small to ensure a proper retention capability in the presence of traction stress arising due to the weight of the product, subsequent stacking and transport thereof.

If a large number of holes are introduced, then the structure of the material is weakened.

In other cases, no retention system is provided at the bottom, which causes the bottom of big containers to detach very easily.

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