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Locking arrangement for panels

A technology for locking structures and sheets, applied in the direction of connecting components, containers with multiple items, packaging, etc., which can solve the problems of increased complexity of machines

Inactive Publication Date: 2001-08-22
MEADWESTVACO PACKAGING SYST LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a disadvantage of this method is the increased complexity required for the machine in order to form and lock the carton

Method used

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  • Locking arrangement for panels
  • Locking arrangement for panels
  • Locking arrangement for panels

Examples

Experimental program
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Embodiment Construction

[0024] Detailed description of the preferred embodiment

[0025] In all the drawings, the same reference numerals indicate the same features.

[0026] First reference figure 1 The semi-finished cardboard box C includes an interlocking structure of sheets according to a preferred embodiment of the present invention. In the described embodiment, the semi-finished product C is configured to form a rolled cardboard box having closing sheets 1 and 5, side wall sheets 2 and 4, and a top sheet 3. The male locking tongue 20 extends from one of the closing sheets 1, and at the same time, a corresponding locking slit generally indicated by 30 is formed on the other closing sheet 5. The closed sheet 5 is formed by a main sheet 6 and a guide sheet 7 connected along several collinear folding lines 8.

[0027] Although the illustrated embodiment includes a fairly simple roll-up cardboard box, it should be understood that the interlocking structure of the present invention can be used in any ca...

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PUM

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Abstract

A locking arrangement for panels includes a first panel, a locking tab extending from the first panel, a second panel having a main portion (6), and a leading portion (7) connected thereto along a plurality of collinear panel fold lines, and a pair of locking slits defined in the second panel. Each locking slit extends at least from a first point disposed astride one of the panel (60) fold lines, into the leading portion and to a second point disposed on the main portion, and the locking slits defining therebetween a strut panel. The locking tab is received into the slits, and is held between the strut panel and the second panel. A strut fold line (62) may be disposed across the strut panel from the locking slit to the cut edge (58) substantially in parallel to the panel fold line, the strut fold line being disposed in an offset relationship to the panel fold line in a direction toward the leading portion, whereby folding of the leading portion at least partially opens the locking slit for receiving the locking tab thereinto.

Description

Background of the invention [0001] The present invention generally relates to a sheet locking structure, and more particularly to a sheet locking structure in which a locking tongue forms a cooperative sliding locking engagement with a pair of locking slits. [0002] In the packaging of articles, especially in the rolled cardboard box of one or more articles, the locking structure is often used to maintain the tightness of the cardboard box surrounding the articles. It can be estimated that this locking structure must be firmly and reliably engaged, and this state must be maintained until the cardboard box is opened. [0003] One known form of locking structure includes a locking tongue and cooperating slits. An example of this type of locking structure can be seen in U.S. Patent No. 3249284 (Wood). In this example, as a typical example, the locking tongue includes a head that is connected to the sheet of the cardboard box along a relatively narrow neck. The tongue includes at lea...

Claims

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Application Information

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IPC IPC(8): B65D71/00B65D71/02B65D5/02B65D5/30B65D5/42B65D75/00F16B5/10
CPCB65D5/4279B65D71/00
Inventor J·R·奥利夫
Owner MEADWESTVACO PACKAGING SYST LLC
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