Outer Housing Bridge-Tab Assembly for Rigid Appliance Panels
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Solution Overview
Problem
Existing household appliances face challenges in assembly efficiency, rigidity, and uniform gap maintenance due to the use of separate connecting elements that cannot absorb axial forces, leading to impaired performance and transport safety.
Innovation Solution
A household appliance design featuring a foldable outer casing with protruding bridge sections and tabs that connect without additional tools, incorporating spacer knobs and nubs to ensure even spacing and enhanced rigidity, allowing for quick assembly and improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate connecting elements (screws, plastic connectors, welded elements) are used to connect housing components, then the assembly can be achieved with simple connection methods, but the housing rigidity is low and uniform distance between housing walls cannot be guaranteed
Solution Approach 1:
The connecting element is merged with the bridge section itself, forming an integral part of the housing structure. The bridge section includes a built-in connecting element that engages with a corresponding recess in the adjacent housing component, eliminating the need for separate fasteners while providing rigid, precise connection and maintaining uniform wall distances.
2Ease of manufacture
If separate connecting elements are used between housing components, then assembly can be performed with simple connection methods, but no axial forces can be absorbed by the connection
Solution Approach 1:
The connecting element is integrated into the bridge section structure, creating a monolithic load-bearing connection. This merged design allows the connection to effectively transmit and absorb axial forces between housing components, while maintaining the simplicity of the assembly process.
3Productivity
If tabs are inserted under bridge sections without additional tools or fasteners, then the household appliance can be assembled more quickly, but connection strength may be compromised
Solution Approach 1:
The tab and bridge section form an integrated mechanical interlocking system where the tab inserts into a recess in the bridge section. This merged design enables tool-free assembly while maintaining strong connections through the interlocked geometry, achieving both rapid assembly and sufficient connection strength.
Solution Approach 2:
The bridge section features a curved upper side that engages with the tab, creating a mechanically interlocking connection. The curved geometry provides both the simplicity of tool-free insertion and the structural strength needed to maintain rigid housing assembly.
4Manufacturing precision
If spacer knobs are used to ensure uniform gap spacing, then the outer housing encloses the inner housing evenly, but the device complexity increases
Solution Approach 1:
The spacer function is merged with the bridge section and tab connection system. The bridge section includes integrated spacers that maintain uniform gap distances between housing components while simultaneously providing the mechanical connection function, eliminating the need for separate spacer elements.
Data Source
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AI summary
The invention relates to a household appliance (100) comprising an external housing (101) that can be assembled. Said external housing comprises a first panel-type outer wall (103-1) having a bent portion (109) in which a projecting bridge section is formed, and a second panel-type external wall (103-2) having a tongue that is to be inserted underneath the bridge section.