Refrigerator Door Multi-Material Assembly to Reduce Raw Material Loss
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Solution Overview
Problem
Conventional refrigerator door designs often result in material wastage and increased costs due to the use of a single material for both upper and lower portions, which can lead to inefficient raw material usage and higher production costs.
Innovation Solution
A refrigerator door design featuring upper and lower portions made of different materials, with a coupling frame that includes support portions, reinforcing members, and elastic portions to enhance structural integrity and reduce material loss, allowing for the use of various materials for the first and second assemblies while maintaining a unified aesthetic appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single material is used for both upper and lower portions of the door, then the manufacturing process is simplified, but raw material loss increases and production costs rise
Solution Approach 1:
The door is divided into an upper door assembly and a lower door assembly that can be manufactured separately using different materials, then coupled together through a coupling frame. This segmentation allows each portion to be optimized for its specific material properties while reducing overall material waste
Solution Approach 2:
Different materials are used for the upper and lower door portions based on their specific functional requirements and aesthetic considerations. The upper portion may use one material while the lower portion uses another, allowing each local area to have the optimal material properties for its intended use
2Loss of substance
If different materials are used for upper and lower door portions, then material efficiency improves and production costs decrease, but the assembly structure becomes more complex
Solution Approach 1:
The coupling frame integrates multiple functions including structural support, material joining, and aesthetic unification. By merging these functions into a single component, the overall assembly complexity is reduced despite using different materials for the door portions
Solution Approach 2:
The coupling frame acts as an intermediary component that connects the upper and lower door assemblies. This mediator component simplifies the joining process by providing a standardized interface between different materials, reducing the complexity that would otherwise result from direct material-to-material assembly
3Strength
If a coupling frame with multiple support portions is used, then structural strength is enhanced, but the device complexity increases
Solution Approach 1:
The coupling frame is segmented into multiple support portions (first, second, third support portions) that are strategically positioned to provide structural support at critical locations. This segmentation allows strength to be concentrated where needed rather than uniformly distributed, improving efficiency
Solution Approach 2:
The coupling frame integrates multiple support portions and reinforcing members that work together as a composite structural system. This composite approach enhances overall structural strength by combining different structural elements that complement each other's mechanical properties
Data Source
AI summary
Provided is a refrigerator including a main body including a storage chamber, a first door rotatably coupled to the main body and having an opening, and a second door rotatably coupled to the main body and the first door to open and close the opening, wherein the first door includes a first assembly formed with the opening, a second assembly provided below the first assembly, and a coupling frame arranged between the first assembly and the second assembly for the first assembly and the second assembly rotate as a unitary body.