Food Container Latching Mechanism for Secure Closure

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Solution Overview

Problem

Existing containers for transporting and packaging fresh and chilled foods lack effective locking mechanisms, allowing consumers to easily open them before purchase, leading to food damage and loss, and the lid can separate from the base during transportation, causing spills and revenue loss.

Innovation Solution

A container design featuring inwardly recessed pockets on the base that capture extending latching portions on the lid, allowing them to flex and snap into place, creating a tight fit and preventing disengagement, with optional additional locking mechanisms and ventilation apertures for air flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a simple hinged closure mechanism is used, then the container is easy to open and close, but the lid can be easily opened by consumers before purchase and may separate during transportation

Engineering Contradiction:
Improveease of closingVSAvoidresistance to unauthorized opening
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The closure mechanism is divided into multiple independent latching portions (at least two) distributed around the container periphery, each capable of engaging with corresponding recesses in the base. This segmentation allows the container to be closed easily while requiring significant force to open, as all latches must be simultaneously overcome.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The latching portions are pre-configured in an extended position that automatically engages with the recesses when the lid is placed on the base. The spring elements are pre-loaded to provide automatic latching action, requiring minimal user effort to close while creating a secure locked state that resists unauthorized opening.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If a tight fitting locking mechanism is implemented, then the lid is secured during transport, but the closing mechanism becomes more complex and difficult to operate

Engineering Contradiction:
Improvelid security during transportVSAvoidclosing mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The spring-loaded latching portions automatically engage with the base recesses when the lid is placed on the base, requiring no manual locking action from the user. The mechanism self-secures through the elastic recovery of the springs, simplifying the user interface while maintaining secure transport conditions.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The latching portions utilize elastic deformation as a key parameter, transitioning from a bent state during closing to an extended locked state during transport. This parameter change allows the mechanism to provide both ease of operation and secure locking without complex mechanical components.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If multiple latching portions are used to secure the lid, then the container becomes more secure, but the manufacturing complexity increases

Engineering Contradiction:
Improvecontainer securityVSAvoidmanufacturing simplicity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

Multiple latching portions are combined into a single integrated lid structure, with each latch formed as one piece with the lid body. This merging approach maintains high security through multiple engagement points while simplifying manufacturing, as the entire latching system is produced in a single molding or forming operation rather than assembling separate components.

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The container effectively prevents premature opening by consumers and lid separation during transport, maintaining food freshness and reducing waste and revenue loss by ensuring a secure closure.

Implementation Method 1

The pair of extending latching portions has concave grooves allowing the extending latching portions to flex inwards from an initial position for insertion into the pair of inwardly recessed pockets. When the pair of extending latching portions are inserted into the pair of inwardly recessed pockets, the pair of extending latching portions expand back to their initial position

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS8261933B2Container
Publication Date: 2012.09.11 TOPPAN THERMOFORMED PACKAGING HOLDINGS INC
  • US8261933B2 patent drawing
  • US8261933B2 patent drawing
  • US8261933B2 patent drawing

AI summary

A container for packaging food for transporting and selling to consumers is provided. The container includes a base having a pair of inwardly recessed pockets for capturing a pair of extending latching portions on a lid. The pair of extending latching portions has concave grooves allowing the extending latching portions to flex inwards from an initial position for insertion into the pair inwardly recessed pockets. When the pair of extending latching portions are inserted into the pair inwardly recessed pockets, the pair of extending latching portions expand back to their initial position and protrusions within the pair of inwardly recessed pockets retain the pair of extending latching portions creating a tight fit and preventing the lid of the container from being easily disengaged from the base of the container.