Silicon Inner Case Lunch Box with Hinged Resin Housing
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Solution Overview
Problem
Conventional lunch box containers made of synthetic resin release environmental hormones when containing hot foods, and stainless steel food trays have high thermal conductivity, leading to burning or spilling risks, while they are not interchangeable.
Innovation Solution
A lunch box container design featuring an inner case with partition walls made of silicon, housed within a lower and upper housing with a locking mechanism, ensuring sealability and interchangeability between the container and tray functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If synthetic resin is used for the lunch box container, then it is easy to manufacture and lightweight, but environmental hormones are generated when hot foods are contained
Solution Approach 1:
The patent employs a dual-material structure where the outer container is made of synthetic resin for ease of manufacture and the inner case is made of stainless steel for safe hot food storage. This composite material approach allows each material to perform its optimal function while mitigating the drawbacks of individual materials.
2Reliability
If stainless steel is used for the food tray, then it is safe for hot food storage, but it has high thermal conductivity causing burning or spilling risks
Solution Approach 1:
The patent implements a nested structure where the stainless steel inner case is placed inside the synthetic resin outer container. The inner case provides safe hot food storage while the outer container acts as a thermal insulator, reducing the thermal conductivity issue and preventing burning or spilling risks.
3Ease of manufacture
If the lunch box container and food tray have fixed structures, then they are simple to manufacture, but they cannot be used interchangeably
Solution Approach 1:
The patent designs the inner case with a universal structure that can function both as a lunch box container and as a food tray. The detachable inner case with partition walls can be used independently for portioning food or placed inside the outer container for sealed storage, providing multiple usage scenarios without requiring separate dedicated containers.
4Reliability
If the inner case is made of silicon material, then sealability is improved through close contact with the outer case, but the structure becomes more complex
Solution Approach 1:
The patent utilizes the flexibility of the silicon inner case to achieve sealability. The inner case is designed to elastically deform and closely fit the contours of the outer container, creating an effective seal without requiring complex sealing mechanisms or additional components.
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 silicon inner case maintains airtight sealability and prevents hot food spills, allowing for safe storage and easy handling, while the hinged design enables efficient detachment and management of the inner case for cleaning and storage.
Implementation Method 1
an inner case contained in the lower housing and provided with partition walls to separate a plurality of inner spaces, wherein the upper housing includes a trench portion formed on a lower surface to correspond to an upper end portion of the inner case
Data Source
AI summary
Provided is a lunch box container including a lower housing that is formed to have an inner containing space; an upper housing that is hinged to one edge of the lower housing and is rotatable; an inner case contained in the lower housing and provided with partition walls to separate a plurality of inner spaces; and a locking wing that is formed on the other edge of the lower housing or the upper housing. The upper housing includes a trench portion formed on a lower surface to correspond to an upper end portion of the inner case.