Household device door
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Solution Overview
Problem
Existing household appliance doors, particularly cooking appliance doors, lack improved functionality and a high-quality appearance, with existing door handles being either protruding or recessed, leading to visibility issues, cleaning difficulties, and increased risk of injury.
Innovation Solution
A door handle system with a guide part and handle plate that moves between a rest and functional position, where the handle plate is flush with the door when closed, allowing for easy operation and automatic switching between positions using a spring element and locking mechanism, ensuring a high-quality appearance and reduced risk of injury.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the door handle protrudes from the door, then it is easier to grip and operate, but it increases the risk of injury and makes cleaning more difficult
Solution Approach 1:
The handle plate is designed to be movable between a retracted position (flush with door surface) and a protruding position (for gripping). This dynamic configuration allows the handle to provide grip only when needed, eliminating the constant injury risk and cleaning difficulty associated with permanently protruding handles.
Solution Approach 2:
The handle plate can be nested into the door surface when not in use, creating a flush appearance. The guide part provides a recess that accommodates the handle plate in its retracted state, effectively hiding the gripping surface within the door structure.
2Object-affected harmful factors
If the door handle is recessed into the door, then it reduces the risk of injury and is easier to clean, but it cannot be gripped effectively when the door is closed
Solution Approach 1:
The handle plate transitions from a retracted state (safe and cleanable) to a protruding state (grippable) through user interaction. The spring element provides automatic ejection to ensure the handle is in the correct position for operation.
Solution Approach 2:
The handle plate is preliminarily positioned in the retracted state for safety and aesthetics. When operation is needed, the user presses the handle plate through the guide part, which preliminarily positions it for gripping before the spring ejects it into the functional protruding position.
3Ease of operation
If the handle plate is always visible and protruding, then it is always accessible for operation, but it creates a poor aesthetic appearance and accumulates dirt
Solution Approach 1:
The handle plate is nested within the door surface when not in use, creating a flush, clean appearance. The guide part's recess accommodates the handle plate in its retracted state, making it invisible or minimally visible from the front.
Solution Approach 2:
The handle plate dynamically changes its visibility and position based on operational needs. It remains hidden or flush with the door during normal conditions, then becomes accessible and protruding when activated by user pressure.
4Ease of operation
If a complex pivoting mechanism is used for the door handle, then it adapts to hand movement well, but it increases device complexity and manufacturing cost
Solution Approach 1:
The door handle is segmented into distinct functional components: the guide part (with recess and locking mechanism) and the handle plate (with spring element). This segmentation allows each component to perform its specific function independently, simplifying the overall mechanism while maintaining adaptability.
Solution Approach 2:
The handle plate pivots about a pivot axis parallel to the guide part's rotation axis, creating a simple yet effective dynamic mechanism. This parallel axis configuration provides smooth motion adaptation to hand movement without requiring complex linkages or multiple moving parts.
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 high-quality, easy-to-clean, and safe door handle system that maintains a flush appearance, reducing the risk of injury and enhancing operational reliability while allowing for easy operation and maintenance.
Implementation Method 1
the door handle has an actuating element, e.g. B. a spring element, which presses the handle plate in the direction of the functional position
Data Source
AI summary
The household appliance door, in particular a cooking appliance door, with a door handle that is movably mounted on the method for operating the household appliance door in order to adapt to an operator's hand movement, the door handle having a guide part and a handle plate, the guide part being movably mounted on the cooking appliance door and the handle plate being optionally movable on the guide part is between a rest position in which the handle plate is not accessible when the household appliance door is closed, and a functional position in which the handle panel is accessible. In the method, to open the household appliance door, the handle plate is pushed in from its rest position to a latched position, whereupon the handle plate automatically pivots out of the guide part into the functional position.