Adjusting Rail Assembly for Wide Composite Door Panels
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Solution Overview
Problem
Decorative panels with a maximum width of 60 cm are not suitable for covering door fronts wider than this, limiting the uniform aesthetic integration with adjacent furniture and appliances.
Innovation Solution
An adjusting rail with a recess allows two decorative panels to be connected as a composite panel, enabling wider coverage by using a flat material strip, which can be fastened like a single panel, and includes a reinforcing rib for stability and tabs for support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If decorative panels with maximum width of 60 cm are used, then manufacturing and handling are simplified, but the coverage of wider door fronts is limited
Solution Approach 1:
The adjusting rail is segmented into a base plate and separate tabs that can be attached to the housing. This modular segmentation allows the rail to span wider areas while maintaining manageable manufacturing and assembly processes for each component
Solution Approach 2:
Multiple decorative panels are combined into a composite panel structure that integrates with the adjusting rail system, enabling wider coverage areas while maintaining the standard 60 cm panel width for manufacturing simplicity
2Adaptability or versatility
If a recess is added to the base plate for connecting flat material strips, then composite panels can be formed, but device complexity increases
Solution Approach 1:
The base plate is segmented by introducing a recess that separates it into distinct attachment zones for multiple decorative panels, enabling composite panel formation while keeping each zone structurally simple and manageable
Solution Approach 2:
Flat material strips serve as intermediary elements that connect decorative panels to the recessed base plate, providing a simple mechanical bonding interface that reduces the complexity of direct panel-to-rail attachment
3Strength
If the recess has sufficient depth for structural strength, then flat material strips gain strength, but the risk of panel edge splintering increases
Solution Approach 1:
The recess has non-uniform depth with different zones optimized for different functions: deeper regions provide structural strength and material strip support, while shallower regions near panel edges minimize stress concentration and splintering risk
Solution Approach 2:
The adjusting rail uses composite construction combining the base plate material with reinforcing ribs made of the same or complementary material, creating a structurally strong yet edge-friendly recess geometry that prevents splintering
4Stability of the object's composition
If reinforcing ribs are added to the base body for stiffening, then structural stability improves, but manufacturing complexity increases
Solution Approach 1:
Reinforcing ribs are strategically placed only in specific regions of the base plate where structural support is most needed, such as beneath the recess and near tab attachments, maintaining manufacturing simplicity in other areas
Solution Approach 2:
The reinforcing ribs are integrated into the base plate as a unified structure, combining the base plate and reinforcement elements into a single manufacturable component that achieves high stability without requiring separate assembly steps
Data Source
Figure 1~2
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Figure 5~6
AI summary
Built-in household appliance comprising a door on which is arranged at least one adjusting rail (1) for holding a trim panel which is supported by a base panel (2) arranged between the trim panel and the door, with that side facing the trim panel (19) having a depression (10) formed therein that extends transversely over the base panel (2).