Side-Swing Oven Door Friction Hinge for Stable Positioning
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Solution Overview
Problem
Conventional side swing oven doors with low friction hinges risk unintended movement due to gravitational forces or external interactions, potentially causing interference with adjacent cabinetry or user injury, especially when not installed perfectly level.
Innovation Solution
Incorporating a friction hinge that impedes rotational motion, allowing users to securely position the door at any angle and preventing uncontrolled movement, thereby enhancing safety and tactile feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a low friction hinge is used to provide smooth and quiet operation, then the door operation quality is improved, but the door becomes susceptible to unintended movement due to gravitational forces or external interactions
Solution Approach 1:
The hinge friction coefficient is adjusted to an optimal range that balances smooth operation with positional stability. The friction is not minimized but controlled to provide just enough resistance to prevent unintended movement while allowing controlled opening and closing
Solution Approach 2:
The hinge transitions from a static low-friction design to a dynamic system where friction adapts to operational needs. The friction characteristic changes based on door position and velocity, providing stabilization when needed and smooth motion when intentionally moved
2Ease of operation
If the door is positioned to swing laterally away from the cooking cavity, then access to the cooking cavity is improved, but the door may interfere with adjacent cabinetry or appliances
Solution Approach 1:
The friction hinge provides preliminary resistance that counteracts forces that might cause the door to swing into adjacent cabinetry or appliances. This preemptive frictional force prevents harmful interactions before they occur
Solution Approach 2:
The friction hinge acts as a counterbalancing force against gravitational and external forces that could cause the door to move into unwanted positions, similar to how a counterweight balances forces in mechanical systems
3Device complexity
If the hinge provides a fixed pivot point for door rotation, then the door structure is simplified, but the door cannot maintain position at varying angles without additional mechanical springs or counter-balance mechanisms
Solution Approach 1:
The patent extracts the position control function from complex mechanical spring or counter-balance mechanisms and incorporates it directly into the hinge's friction characteristic. This eliminates the need for separate position-maintaining components
Solution Approach 2:
The hinge combines multiple functions into a single component: it provides the pivot point for rotation, controls the friction for smooth operation, and maintains position at varying angles. This merging of functions simplifies the overall door assembly
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 friction hinge effectively prevents unintended door movement, improving safety by ensuring the door remains stable and reducing the risk of injury or interference with adjacent objects, while maintaining a smooth and quiet operation.
Implementation Method 1
the at least one hinge includes a friction hinge configured to impede rotational motion of the side swing door
Data Source
AI summary
A home cooking appliance with a side swing door is provided. The home cooking appliance includes a housing having a cooking cavity, and a side swing door movable about at least one hinge between a closed position and an open position to provide access to the cooking cavity. The at least one hinge includes a friction hinge configured to impede rotational motion of the side swing door.