Box cover fastening structure

Abstract

The invention provides a packing box cover fastening structure which comprises a box body and a box cover made of paperboards. The front end of the box cover is provided with a lock buckle clamp; the lock buckle clamp comprises an upper horizontal piece, a vertical turning segment, a lower horizontal piece and a lock buckle piece which are connected into a whole, the upper horizontal piece, the lower horizontal piece and the vertical turning segment are connected to form a U-shaped horizontal clamp groove, and the center of the front end of the box cover is inserted into the U-shaped horizontal clamp groove; an upper protrusive block protruding downwards is integrally formed on the lower surface of the upper horizontal piece, a lower protrusive block protruding upwards is integrally formed on the upper surface of the lower horizontal piece, and a first buckle hole for allowing the upper protrusive block to embed and a second buckle hole for allowing the lower protrusive block to embed are formed in the center of the front end of the box cover; the lock buckle piece is integrally provided with a back protrusive block protruding backwards; when the box cover is closed in a covering mode, the back protrusive block of the lock buckle piece is bucked into a third buckle hole. According to the packing box cover fastening structure, assembly is easy and convenient, connection among the components is firm, and the action process of fastening the box cover or opening the box cover is convenient.

Description

technical field [0001] The invention belongs to the technical field of packaging boxes, and in particular relates to a fastening structure for a lid of a packaging box. Background technique [0002] Distinguished from the connection form of the box cover and the box body, the packaging box can be divided into two types. The first type is a split type in which the box cover and the box body can be separated. For the box cover, remove the whole box cover from the box body; the second is the rotary connection type in which the box cover and the box body cannot be separated. The box body and box cover of the rotary connection type packaging box are usually made of cardboard. The cover is usually only composed of a flat cover surface (no vertical cover edge is provided), and the rear end of the cover is rotatably connected to the rear wall of the box body through the crease line. [0003] Compared with the split-type packaging box, it is convenient and quick to lift the box cove...

AI Technical Summary

Problems solved by technology

[0004] The lid fastening mechanism of the existing rotary connection type packaging box usually adopts magnet blocks 41, 42 (or metal buttons), such as figure 1 As shown, there are the following problems: one, the front edge of the box cover must be provided with a rotatable dash panel 4, which not only wastes materials, but also is not conducive to the beauty, generosity and simplicity of the front of the whole packaging box; two, the production process is complicated, and the magnet block 41, 42 (or metal buttons) need to be attached to the front wall of the box body and the dash panel 5 through complicated processes, and it is difficult to form a firm connection between the magnet blocks 41, 42 (or metal buttons) and the cardboard; 3. When the packaging carton is invalid and the paper needs to be recycled, the magnet blocks 41, 42 (or metal buttons) are difficult to take out with bare hands. If the magnet blocks 41, 42 (or metal buttons) are not taken out, the entire packaging carton is difficult to crush process, not conducive to recycling

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