Molded Container with Living Hinge and Tamper-Evident Lock
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Solution Overview
Problem
Existing containers are often difficult for tradespeople to access due to small openings, require two hands to open and close, lack convenient storage options, and do not have tamper-evident features, leading to issues with theft and loss of items.
Innovation Solution
A one-piece, integrally molded container with a large unobstructed opening, a lid connected via a living hinge, a lock mechanism for one-handed operation, and a tamper-evident seal that prevents re-opening once closed, along with ergonomic design and anti-vacuum sealing structures for easy stacking and nesting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the container opening is made small to protect contents, then security is improved, but accessibility for tradespeople deteriorates
Solution Approach 1:
The container is divided into a body and a removable lid as separate functional segments. The lid can be detached to provide full access to contents while maintaining security when closed, resolving the contradiction between protected access and hands-free operation.
Solution Approach 2:
A friction-fit lid acts as an intermediary element between the container body and its contents. The lid provides the security function when closed while allowing complete access when removed, eliminating the need for small openings that hinder accessibility.
2Reliability
If the lid requires two hands to operate, then secure closure is achieved, but ease of use deteriorates
Solution Approach 1:
The friction-fit lid mechanism is designed to be self-latching through rotational engagement. Once twisted into position, the lid automatically secures itself without requiring manual fastening or two hands, providing secure closure with one-handed operation.
Solution Approach 2:
The lid transitions from a static friction-fit design to a dynamic rotational locking mechanism. The twisting motion provides progressive engagement that secures the lid firmly while requiring only one hand to operate through natural wrist movement.
3Device complexity
If no tamper-evident feature is included, then device complexity is reduced, but reliability deteriorates due to theft and loss
Solution Approach 1:
The tamper-evident seal utilizes color-coded indicators that change or display different colors when tampered with. This visual signaling system provides clear tamper evidence without adding complex mechanical components, maintaining simplicity while improving reliability.
Solution Approach 2:
The tamper-evident seal is pre-applied to the container during manufacturing and remains intact until attempted opening. This preliminary protective action detects tampering before contents can be stolen, providing reliability without adding operational complexity.
4Adaptability or versatility
If no stacking or nesting feature is included, then design flexibility is improved, but productivity deteriorates due to storage difficulties
Solution Approach 1:
The container features an inverted frustoconical configuration that allows smaller containers to nest within larger ones. This nesting capability provides space-efficient storage and transport while maintaining design flexibility through the universal frustoconical shape that adapts to various container sizes.
Solution Approach 2:
The frustoconical shape utilizes vertical stacking in the height dimension rather than horizontal arrangement. Containers stack vertically with the smaller base of one fitting over the larger base of another, dramatically improving storage density without compromising design adaptability.
Data Source
AI summary
A one-piece molded container comprising a lid and a container body is provided. The container body and lid are connected by a living hinge. The container body has interior protrusions extending from a bottom portion in an interior of the container body to limit nesting of the containers. The container body has a recess on a bottom portion on an exterior portion of the container and a dual-prong lid-locking mechanism, the lid-locking mechanism including a first prong, a second prong being a tamper-evident tearaway portion, and a protrusion extending downwardly from an interior portion of the lid.