Glueless Cardboard Box with Interlocking Flaps
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Solution Overview
Problem
Existing box construction methods require gluing and specialized machinery, leading to inefficient use of cardboard and limited structural strength, as flaps need to be cut and adhered to form the box.
Innovation Solution
A die-cut cardboard blank with strategically placed marks and fold lines allows for the assembly of a stable box by folding flaps over end and side panels without gluing, utilizing oblong slots and angled cut lines for interlocking stability and maximum material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If flaps are glued to end panels and side panels, then the box structure is formed, but specialized machinery and gluing means are required
Solution Approach 1:
The flaps are designed to interlock with the end panels and side panels through self-assembly mechanisms, eliminating the need for external gluing means and specialized machinery. The structure serves itself by using the material's own geometry and mechanical interlocking features to form the box.
Solution Approach 2:
The gluing process and specialized assembly machinery are completely removed from the manufacturing process. The design extracts the adhesive function and replaces it with pure mechanical interlocking through the flap and panel geometry.
2Ease of manufacture
If flaps are cut and adhered to form the box, then the box is assembled, but maximum use of cardboard is not achieved
Solution Approach 1:
The die-cut blank is pre-designed with all necessary fold lines, cut lines, and flap geometries incorporated before assembly. This preliminary design ensures that the cardboard is optimally utilized from the start, with no material wasted during the assembly process.
3Ease of manufacture
If flaps are glued to end panels, then the box structure is formed, but structural strength is limited
Solution Approach 1:
The flaps are designed with curved or angled geometries that distribute mechanical loads more effectively across the joint areas. This curvature allows for better stress distribution and enhanced structural strength compared to simple flat flaps.
Solution Approach 2:
The box structure utilizes multiple layers and orientations of cardboard material working together through the interlocking flap design, creating a composite structure that is stronger than the sum of its individual parts.
4Ease of manufacture
If specialized machinery is used for gluing, then assembly is completed, but productivity is reduced due to complex processes
Solution Approach 1:
The box structure assembles itself through simple folding and interlocking actions, eliminating the need for complex gluing machinery and multi-step processes. This self-assembly capability dramatically improves productivity by allowing rapid manual or automated assembly without specialized equipment.
Data Source
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AI summary
Glueless mountable box that is formed from a sheet of cardboard comprising a bottom panel (1) from which two lateral edges or side panels (2) and two end panels (3) emerge, along with four flaps (4). The flaps are joined by fold lines at both the end panels and the side panels, and with cut lines which, together with the fold lines, enable the flaps on the end panels and side panels to be folded, overlapping with the end panels, to shape the box. The ends panels have slots serving as hand holes, while the flaps have oblong slots (4.1) such that, when the flaps (4) are folded, said slots (4.1) are arranged in a position coincident with the flaps (3.1), thereby obtaining a box that is easily assembled, without the need for additional fastening means, providing greater structural and constructive stability.