Centre trim for domestic appliances
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Solution Overview
Problem
Existing center trims for domestic appliances, such as refrigerators, detach over time and are difficult to accurately place due to reliance on reversible fasteners like Velcro or require flexible materials that need adjustment for fitting, leading to potential detachment and aesthetic issues.
Innovation Solution
A trim design with unsupported portions between fixing features that allow for relative movement, incorporating fins extending behind the front surface for alignment and attachment points hidden from view, using fixing features that engage parallel and perpendicular to the longitudinal axis for easy installation and secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If reversible fasteners like Velcro are used to attach the centre trim, then the trim can be easily installed and removed, but the trim becomes detached over time and is difficult to place accurately
Solution Approach 1:
The trim is divided into segments with fixed portions (containing fixing features) and unsupported portions (allowing movement). This segmentation enables the trim to be both easy to install and reliably attached, as the fixed portions provide secure attachment points while the unsupported portions allow for adjustment and accommodation of positioning variations.
Solution Approach 2:
The trim incorporates dynamic characteristics by allowing the unsupported portion to move or slide relative to the appliances. This dynamic design enables the trim to self-adjust to the correct position while maintaining reliable attachment at the fixed portions, resolving the contradiction between ease of installation and attachment reliability.
2Strength
If the trim is made rigid for structural strength, then it maintains structural integrity, but it becomes difficult to fit and adjust to the required space
Solution Approach 1:
By segmenting the trim into fixed and unsupported portions, the design maintains structural strength at the fixing features while allowing the unsupported portion to be flexible in fitting. The fixed portions provide the necessary rigidity for attachment, while the unsupported portions enable easy adjustment to the required space.
Solution Approach 2:
The trim exhibits local quality by having different mechanical properties in different regions. The fixed portions are rigid for strong attachment, while the unsupported portions are more compliant for easy fitting. This local differentiation resolves the contradiction between structural strength and ease of fitting.
3Ease of manufacture
If fixing features are placed on the front face of the trim, then attachment is simplified, but it creates additional attachment points that need to be covered up
Solution Approach 1:
The fixing features are positioned in the gap between the appliances rather than on the front face of the trim. This spatial repositioning in another dimension (from the front surface to the inter-appliance gap) allows simplified attachment while eliminating the need to cover attachment points on the visible front face, thus resolving the aesthetic complexity issue.
Solution Approach 2:
The fixing features are extracted from the front face of the trim and relocated to the gap between the appliances. This extraction removes the aesthetic burden of visible attachment points from the front face while maintaining the simplicity of attachment through the fixing features in the gap.
4Reliability
If the trim uses continuous attachment along its length, then it is securely fixed, but it cannot easily adjust to fit in the required space
Solution Approach 1:
The trim is segmented into fixed portions ( providing secure attachment) and unsupported portions (providing adaptability). This segmentation allows the trim to be securely fixed at specific points while maintaining the ability to adjust and adapt to the required space through the unsupported sections.
Solution Approach 2:
The combination of fixed and unsupported portions creates a dynamic attachment system that is both secure and adaptable. The fixed portions ensure reliable attachment, while the unsupported portions enable the trim to flex and adjust to fit in the required space, resolving the contradiction between attachment security and adaptability.
Data Source
AI summary
A centre trim for fitting between two domestic appliances such as refrigeration appliances. The centre trim is configured to attach between two domestic appliance cabinets and has a longitudinal front surface extending predominantly in one dimension, a first fixing feature at or near a first end of the longitudinal member, and a second fixing feature at or near a second end of the longitudinal member. An unsupported portion is provided between the first fixing feature and the second fixing feature. The first and second centre trim fixing features may attach in different directions, such as respectively perpendicular and parallel to the front surface.