Modular Container Snap-Fit Assembly and Disassembly
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Solution Overview
Problem
Existing containers, whether made of cardboard or synthetic resin, lack versatility and cost-effectiveness for transporting articles of various sizes and quantities, with cardboard containers being non-modular and difficult to recycle, and plastic containers being inflexible and not easily recyclable.
Innovation Solution
A reusable and recyclable modular container made of synthetic resin parts that can be assembled by hand without tools, using a set of identical side pieces and corresponding top/bottom pieces, with optional extension and divider pieces to create various sizes and compartments, allowing for easy disassembly and reassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cardboard containers are used for transportation, then they are easy to assemble from blanks without tools, but they are non-modular and difficult to recycle
Solution Approach 1:
The container is divided into separate modular components including side pieces with interlocking features, bottom pieces, and closure pieces that can be assembled without tools. Each component is designed with specific joining features that enable easy manual assembly while maintaining structural integrity
Solution Approach 2:
The container system uses standardized interlocking features and joining mechanisms that can be applied across different container sizes and configurations. The same basic component designs can serve multiple functions and be used in various container arrangements, achieving modularity while maintaining ease of assembly
2Reliability
If plastic containers are used for transportation, then they are durable and can be reused multiple times, but they are not easily separated into component parts for recycling
Solution Approach 1:
The plastic container is designed as separate modular components (side pieces, bottom pieces, closure pieces) that can be easily separated from each other. This segmentation maintains durability during use while enabling easy disassembly and recycling by allowing components to be sorted and processed independently
Solution Approach 2:
The container components are designed to be easily disassembled and separated into individual parts for recycling. The interlocking features allow for simple separation without damage to the plastic material, facilitating recovery and reuse of the plastic components in recycling processes
3Strength
If plastic containers are molded in specific sizes and types, then they provide durability and strength, but they lack versatility to replace cardboard containers for various sizes and quantities
Solution Approach 1:
The container system uses standardized side pieces that can be combined in different quantities and configurations to create containers of various sizes. The modular design allows stacking and arrangement of identical components to achieve different volume requirements while maintaining consistent structural strength
Solution Approach 2:
The container design employs universal joining features and standardized component interfaces that allow the same basic pieces to be used across multiple container sizes and configurations. This enables a single set of molded parts to serve multiple size requirements, achieving versatility without compromising strength
4Strength
If cardboard containers use taping and glue for strengthening, then they achieve structural integrity, but they create recycling problems
Solution Approach 1:
The design extracts and eliminates the need for taping and gluing by incorporating integral interlocking features directly into the molded plastic components. The joining mechanisms are built into the container parts themselves, removing external fastening materials that would contaminate recycling streams
Solution Approach 2:
The container components are designed to be made from the same type of plastic material throughout, without mixed materials or adhesives. This material homogeneity ensures that the entire container can be recycled together without separation issues, maintaining structural integrity through design rather than composite materials
Data Source
AI summary
A modular container has identically molded sides pieces connected together at corner joints and separately molded, identical top/bottom pieces. The corner joints are formed by snap fit engagement of flexible locking tabs of one side piece with pockets on another side piece when the molded side pieces are serially connected together. The flexible locking tabs are biased oppositely to one another in alternating manner and each tab engages with a shoulder in the corresponding pocket to enable a zipper effect with respect to the assembly and disassembly of the corner joints. Two top/bottom pieces are secured by relative rotation to the assembled side pieces to form the container. An extension ring or divider can be used between upper and lower sets of the assembled side pieces to enable different container sizes. The component parts are molded with a degree of flexibility that enhances the assembly/disassembly of the corner joints.