Illuminated Knob Assembly with Removable Light Guide for Easy Cleaning
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Solution Overview
Problem
Existing control knob assemblies on cooking appliances make it impossible to attach or remove light guides once the panel is assembled, requiring disassembly of the panel to clean or replace the light guide, which is inconvenient and limits customization.
Innovation Solution
A control knob assembly with a removably attached light guide that includes a resilient tab biased radially outward, allowing for easy attachment and detachment without disassembling the panel, along with a surface panel and light source configuration that enables light emission through a defined opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the light guide is permanently attached to the panel during assembly, then the structural integrity and stability are improved, but the ease of operation for cleaning and replacement deteriorates
Solution Approach 1:
The light guide assembly is segmented into separate components: the light guide itself and the resilient tab attachment mechanism. This segmentation allows the light guide to be permanently secured during assembly while enabling easy removal when needed, as the resilient tab can be disengaged from its recess without disassembling the entire panel.
Solution Approach 2:
The resilient tab provides a dynamic attachment mechanism that transitions between engaged and disengaged states. During normal operation, the tab maintains a engaged state for structural stability. When cleaning or replacement is needed, the tab can be easily disengaged, providing the desired ease of operation without compromising overall structural integrity.
2Ease of repair
If the panel is disassembled to remove the light guide, then the ability to clean and replace the light guide is improved, but the device complexity and time required increase
Solution Approach 1:
The resilient tab attachment mechanism extracts the light guide removal function from the main panel assembly process. By providing a dedicated, independent attachment mechanism, the light guide can be removed directly without requiring disassembly of the entire panel, thereby simplifying the repair process and reducing device complexity.
Solution Approach 2:
The resilient tab mechanism provides self-service functionality for light guide replacement. The tab's design allows users to easily engage and disengage the light guide without requiring tools or complex disassembly procedures, enabling simple maintenance and replacement operations.
3Reliability
If the light guide is permanently fixed during assembly, then the reliability of the connection is improved, but the adaptability for customization and cleaning deteriorates
Solution Approach 1:
The resilient tab nests within a corresponding recess in the panel, creating a reliable nested connection during normal operation. This nested structure provides secure attachment and connection reliability while allowing easy access to the light guide for cleaning and customization by simply disengaging the tab from its nested position.
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
Enables convenient replacement and cleaning of light guides without disassembling the panel, providing a customizable and user-friendly illumination system for control knobs.
Implementation Method 1
The resilient tab may be biased radially outward away from the central axis
Data Source
AI summary
An appliance and illuminated knob assembly are generally provided herein. The knob assembly may include a surface panel, a control knob, a light source, and a light guide. The surface panel may have a forward face and a rearward face. The control knob may be attached to the surface panel at the forward face. Moreover, the control knob may be rotatable about a central axis. The light source may be disposed behind the surface panel at the rearward face. The light guide may be removably attached to the surface panel about the control knob and include a view ring to receive a portion of light emitted from the light source.