Hinge for folding case

Abstract

A hinge for folding carton comprises an internal hinge and an external hinge movably connected through a rotary pin and a locking device used to lock up the internal hinge and the external hinge, wherein the external hinge comprises at least two parallel external hinge plates; the internal hinge comprises two parallel internal hinge plates. Compared with the prior art, the invention can increase transverse breadth of the internal hinge without changing the standard operating hole, thereby effectively increasing rigidity of the internal hinge so as to make the internal hinge be suitable for folding carton of any type and particularly for folding carton provided with independent corner post.

Description

Technical field [0001] The invention relates to a component of a large rigid foldable container, in particular to a component for a folding box, in particular to a folding box hinge. Background technique [0002] In the field of containers, folding boxes are widely used due to their small stacking space after folding, low cost of empty container transfer, and convenient loading and unloading of goods. [0003] As early as the mid-1970s, the folding box has been designed, researched, and applied, but the folding box at that time was transformed from a dry cargo box. When the load is loaded, it is used as a complete dry cargo box. When the empty box is transported, the top plate is removed. Fold the side walls inward respectively, put the top plate, and fold the end walls at both ends toward the inside of the box. Although the folding box at that time could save the cost of empty box transportation, the complicated operation made the box type lack of universality. It was not until ...

AI Technical Summary

Problems solved by technology

However, when the structure of the end wall is shown in Figure 5, there are only corner columns 210 located on both sides of the end wall (such corner columns that withstand lateral thrust in isolation are generally called independent corner columns), and at this time the top of the corner columns 210 is subjected to a force F, then The lateral rigidity of the hinge 1 is difficult to meet the requirements. Here, since the width of the gap 120 on the hinge top plate 12 is generally about 63 mm, it is generally impossible to strengthen the inner hinge along the width direction to meet the use requirements.

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