Pressure Cooker Lid Control Mechanism for Safe Locking Grip
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Solution Overview
Problem
Existing pressure cooking appliances have a central handle that serves both as a locking/unlocking mechanism and a gripping member, which can lead to unsafe handling practices, such as lifting the entire device by the lid, and is inconvenient for storage and dishwasher use due to its bulk size.
Innovation Solution
A pressure cooking appliance with a control member that has a deployed position for easy gripping and manipulation of the lid, and a retracted position that is difficult to grasp, preventing the lid from being lifted by the handle when locked, along with a pivotally mounted design to secure the lid during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the central handle is made large enough to provide a good grip for manipulating the lid, then the ease of operation is improved, but the volume of the lid increases making it inconvenient for storage and dishwasher use
Solution Approach 1:
The control member is made movable between a retracted position (where it is flush with the lid surface) and a deployed position (where it protrudes to form a gripping handle). This dynamic transformation allows the lid to have a compact volume for storage and dishwasher use, while providing an ergonomic handle when needed for operation.
2Ease of operation
If the central handle is used to lift the entire device including the tank, then the ease of operation is improved, but the reliability and safety decrease due to mechanical stress on the locking mechanism and potential slippage
Solution Approach 1:
The control member's movable design between retracted and deployed positions provides visual and tactile feedback about the locking state. When retracted, it indicates the lid is locked and should not be lifted by the handle. When deployed, it indicates the lid is unlocked and can be safely handled. This dynamic positioning prevents users from attempting to lift the heavy tank when locked, thereby protecting the locking mechanism.
Solution Approach 2:
The control member's position (retracted vs. deployed) serves as a visual indicator of the locking state, similar to a color change warning system. Users can immediately recognize whether the lid is locked or unlocked by the position of the control member, preventing unsafe handling practices.
3Ease of operation
If the control member is always in a deployed position for easy gripping, then the ease of operation is improved, but the volume and device complexity increase
Solution Approach 1:
The control member is designed to be movable rather than fixed, allowing it to transition between a retracted position (flush with lid surface for compact storage) and a deployed position (protruding for easy gripping). This dynamic capability enables the lid to maintain a small volume when not in use while providing ergonomic handling when needed.
Data Source
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AI summary
- Pressure cooking apparatus with a bi-functional locking/unlocking control mechanism. - The invention relates to a pressure food cooking apparatus comprising, on the one hand, a tank and a lid, and on the other hand, a control mechanism (6) for locking/unlocking the lid relative to the tank, characterized in that said control mechanism (6) is movably mounted on the lid between, on the one hand, a deployed position corresponding to the unlocking of the lid, in which it is designed to be grasped manually to allow manipulation of the lid, and on the other hand, a retracted position corresponding to the locking of the lid, in which it is designed to be more difficult to grasp manually than it is in the deployed position. - Pressure food cooking apparatus.