Composite Cabinet Frame Assembly for Moisture-Stable Modular Cabinets
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Solution Overview
Problem
Existing kitchen cabinet manufacturing methods are costly, complex, and prone to issues such as particleboard toxicity, moisture expansion problems with wood, and excessive use of connecting pieces, which complicates the structure and makes it difficult to manufacture efficiently and modify.
Innovation Solution
A cabinet system using injection-molded composite material for vertical side frames and horizontal intermediate parts, allowing for a lightweight, modular, and expandable structure with optional wood panels and expansion joints, enabling easy assembly and modification without compromising strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If particleboard is used for cabinet construction, then cost is reduced, but the cabinet structure becomes weak and crumbles easily under impact
Solution Approach 1:
The patent uses composite material consisting of thermoplastic granules mixed with fibrous material (wood fibers, cellulose, or synthetic fibers) to manufacture the side frames. This composite structure provides both strength and durability while maintaining ease of manufacturing through injection molding. The fibrous reinforcement within the thermoplastic matrix prevents crumbling while the injection molding process keeps production simple and efficient.
2Ease of manufacture
If traditional wood profiles are used for cabinet body, then structural strength is achieved, but the cabinet becomes expensive and difficult to manufacture
Solution Approach 1:
The patent replaces traditional mechanical assembly of wood profiles with multiple connecting pieces with an injection molding process that creates integrated side frames with built-in connection features. The fastening holes and connection elements are formed directly during molding, eliminating the need for separate connecting pieces and simplifying assembly while maintaining structural strength.
3Stability of the object's composition
If wood material is used for cabinet panels, then aesthetic value is achieved, but moisture expansion causes dimensional instability
Solution Approach 1:
The patent changes the material parameters by using thermoplastic granules combined with fibrous materials in a controlled ratio, creating a composite that exhibits dimensional stability similar to wood but without the moisture expansion problem. The thermoplastic matrix prevents the fibrous material from absorbing moisture and expanding, while the fibrous reinforcement provides wood-like aesthetics and strength.
4Device complexity
If multiple connecting pieces are used to assemble cabinet body, then structural flexibility is achieved, but the cabinet structure becomes complicated and costly
Solution Approach 1:
The patent merges the side frame structure with the connection features by incorporating fastening holes and connection elements directly into the molded side frames. This eliminates the need for separate connecting pieces while maintaining the ability to assemble and configure cabinets flexibly. The integrated design reduces part count and simplifies the overall structure while preserving adaptability.
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 solution results in a cost-effective, simpler, and stronger cabinet system that can be easily customized and assembled, with potential weight savings of up to 50% compared to particleboard cabinets, while addressing issues of moisture expansion and reducing material complexity.
Implementation Method 1
the side frame of the cabinet is manufactured from composite material by injection moulding so that the side frame is an essentially rectangular piece, which is open in the middle
Data Source
Figure 1~3
Figure 2
Figure 4~6
AI summary
Cabinet, cabinet system and method for manufacturing a cabinet, such as a kitchen cabinet, in which the cabinet (10) is formed from vertical, rectangular side frames (11) and horizontal intermediate parts (12) connecting them. The side frames and intermediate parts are injection moulded from composite material, which contains a mixture of new or recycled plastic, and filler, such as sawdust, wood fibres, cellulose fibres, reed canary grass or peat. The side frames have connection points ready in place for the horizontal intermediate parts, and screw holes for a door, shelf and/or other cabinet part.