Microwave Door Push Button Assembly for Low-Force Quiet Opening
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Solution Overview
Problem
Existing microwave oven door push button mechanisms often result in high operational force and noise, with potential wobbling issues due to loose parts and complex assembly, which complicates maintenance and user experience.
Innovation Solution
A push button assembly design featuring a button with a button base and support, utilizing bearings and pins for smooth operation, a lever with an ejector pin, and a support pin for stability, reducing assembly complexity and wobbling, and incorporating a button cover for easy mounting and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a complex push button mechanism with multiple parts is used, then the door opening function is achieved, but operational force and noise increase
Solution Approach 1:
The patent combines multiple separate components (button, lever, bearing, pins, ejector mechanism) into a single integrated push button assembly. The button is coupled to the button base defining an interior, with the button support, bearings, and pins all integrated within this assembly. This merging eliminates loose parts while maintaining the door opening function, directly resolving the contradiction between operational smoothness and assembly complexity.
Solution Approach 2:
The patent introduces a bearing as an intermediary element between the button support and the pins. The bearing is slidably received within the channel defined by the button support, and the pins are slidably received within the bearing. This intermediary bearing reduces friction and operational force while providing a smooth, noiseless operation, directly addressing the contradiction between ease of operation and device complexity.
2Device complexity
If a simple push button design is used, then assembly is easier, but wobbling and loose parts occur
Solution Approach 1:
The patent merges all necessary components (button, button base, button support, bearings, pins, ejector mechanism) into a single integrated assembly that is mounted to the door assembly. This integration eliminates loose parts that cause wobbling while keeping the overall structure simple and easy to maintain as a single unit, resolving the contradiction between assembly simplicity and stability.
Solution Approach 2:
The bearing within the push button assembly provides self-aligning and self-stabilizing functionality. The bearing's internal structure automatically maintains proper alignment between the button support and pins during operation, preventing wobbling without requiring additional external stabilization components. This self-service mechanism maintains stability while keeping the assembly simple.
3Ease of operation
If multiple separate components are used in the push button mechanism, then the door opening function is achieved, but noise is generated
Solution Approach 1:
The bearing serves as a mediator between moving components, providing a smooth, low-friction interface that eliminates noisy rubbing and impacting sounds. The bearing's rolled contact surfaces replace sliding friction, resulting in a noiseless operation while maintaining operational smoothness, directly resolving the contradiction between operation quality and noise generation.
Solution Approach 2:
By integrating all components into a single assembled unit with precision-fit interfaces, the patent eliminates gaps and misalignments between separate parts that would generate noise during operation. The unified structure ensures smooth, quiet operation while maintaining the necessary mechanical function for door opening.
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 provides a smooth, noiseless operation with reduced user force required to open the door, minimizes wobbling, and simplifies assembly and maintenance by eliminating loose parts, making the push button assembly more durable and user-friendly.
Implementation Method 1
A bearing is slidably received within the channel. A pin is coupled with the button base and slidably received within the bearing
Data Source
AI summary
A push button assembly for a cooking appliance may include a button, a button base coupled to the button defining an interior, and a button support coupled to the button and disposed within the interior. The button support may include a boss defining a channel. A support pin may be rotatably coupled with the button support. A pin may be coupled with the button base and slidably received within the channel. The push button assembly may further include a lever having a first end and second end. The lever may define an aperture configured to receive the pin.