Pull-Out Extractor Hood Magnetic Latch for Easy Release
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Solution Overview
Problem
Existing extractor hoods with pull-out elements face challenges in securely holding the pull-out element in a retracted position while allowing easy release, often requiring high tensile force to overcome spring or extension forces, and may have designs that require accessible fastening levers for user operation.
Innovation Solution
A locking mechanism combining a pivotably mounted flap element and a magnetic element, where the flap element is attached to the extractor housing and the magnetic element to the pull-out element, using a scroll spring for extension, allowing secure holding and easy release by pivoting the flap element to break the magnetic connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixation mechanism is provided to securely hold the pull-out element in the retracted state, then the pull-out element is securely held, but a high tensile force is required to release the fixation
Solution Approach 1:
The patent replaces the purely mechanical fixation system with a magnetic field-based holding mechanism. The magnetic element on the flap element creates a magnetic force that holds the pull-out element in the retracted state, eliminating the need for high mechanical fixing forces. This allows easy release by simply pivoting the flap element, as the magnetic holding force is sufficient for normal operation but can be easily overcome by small manual movements.
2Ease of operation
If a fastening lever is made accessible to the user for releasing the holder, then the connection can be released easily, but the device complexity increases
Solution Approach 1:
The flap element serves multiple functions: it acts as both the locking mechanism (through its pivotable connection to the magnetic element) and the release mechanism (through its accessible position on the pull-out element). This multi-functionality eliminates the need for separate fastening levers or complex release mechanisms, reducing overall device complexity while maintaining ease of operation.
Solution Approach 2:
The pull-out element itself serves as the interface for both locking and releasing operations. The flap element, being part of the pull-out element, automatically provides the release function when pivoted, eliminating the need for external actuators or separate control mechanisms. The system uses its own components to perform both locking and releasing functions.
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 secure holding of the pull-out element in the retracted position with reduced force required for release, simplifying extension and retraction, and providing a user-friendly operation without risking component damage from incorrect use.
Implementation Method 1
a magnetic element which faces the flap element and via which the pull-out element is held on the extractor housing in at least one state of the closure device
Implementation Method 2
the pull-out element is connected to the extractor housing via at least one scroll spring
Data Source
Figure 1
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AI summary
The present invention relates to an extractor hood, which has at least one pull-out element (14), which can be displaced relative to a stationary extractor housing (10) of the extractor hood (1), and at least one locking device (12) for holding the extractor element (14) in at least one retracted position having. The extractor hood is characterized in that the closure device (12) has a closure element (13) with at least one pivotably mounted flap element (132) and at least one magnet element (15) which faces the flap element (132) and via which in at least one state the closure device (12), the pull-out element (14) is held on the extractor housing (10).