Tetrahedral Package Assembly Using Adhesive and L-Shaped Blank
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Solution Overview
Problem
Irregular tetrahedral packages are difficult to assemble into a stable cube for efficient space-filling due to instability and lack of clear guidance on adhesive application, requiring additional support for secure assembly and handling.
Innovation Solution
A method involving L-shaped cardboard blanks with specific folding and adhesive application to assemble irregular tetrahedral packages, using isosceles right triangles and elongated right triangles, with options for additional support from trays or looped ribbons to maintain stability during assembly and transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If irregular tetrahedral packages are assembled into a cube without additional support, then space-filling efficiency is improved, but assembly stability deteriorates
Solution Approach 1:
The patent introduces adhesive as an intermediary substance to bond the tetrahedral packages together at their interfaces. The adhesive fills the gaps and provides bonding force between the packages, enabling them to maintain a stable assembled configuration while achieving complete cube filling.
Solution Approach 2:
The patent specifies preliminary actions including applying adhesive to specific interfaces before assembly, and using a rectangular enclosure to maintain packages in assembled condition. These preliminary preparations ensure stability is established before the final cube configuration is achieved.
2Stability of the object's composition
If adhesive is applied to assemble tetrahedral packages, then assembly stability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies adhesive locally only at the interfaces where tetrahedral packages meet, rather than throughout the entire assembly. This localized application reduces the total amount of adhesive needed and simplifies the manufacturing process while still achieving stable assembly.
Solution Approach 2:
The patent divides the assembly process into discrete steps with adhesive applied at specific interfaces between packages. This segmentation of the assembly process makes the manufacturing more manageable and less complex compared to a monolithic assembly approach.
3Stability of the object's composition
If rectangular enclosure is used to maintain packages in assembled condition, then assembly stability is improved, but device complexity increases
Solution Approach 1:
The rectangular enclosure serves multiple functions: it maintains packages in assembled condition, provides structural support, and defines the outer boundaries of the cube. This multi-functionality reduces the need for additional specialized components, thereby reducing overall device complexity.
Solution Approach 2:
The patent merges the functions of package containment, structural support, and assembly maintenance into a single rectangular enclosure. By combining these functions into one component rather than using separate elements for each function, the overall device complexity is reduced.
Data Source
AI summary
A method of assembling irregular tetrahedral packages having a first orientation and a mirrored second orientation, the packages each having two panels that are isosceles right triangles, and two elongated panels that are right triangles. The method involves providing an L-shaped blank having a rectangular central wall, rectangular right and left walls attached on neighboring edges of the central wall via weakening lines, arranging one package with a first orientation and one package with a second orientation on each of the right wall, left wall and central wall, wherein all packages are placed such that a panel with isosceles right triangle shape faces the cardboard blank, and where the hypotenuse of the panel is directed towards a central corner, between the right wall and the left wall, and such that the top downward angled edges of all packages also are directed towards the central corner.