Bayonet Pressure Cooker Lid Control for One-Hand Locking
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Solution Overview
Problem
Bayonet locking systems in pressure cookers are inconvenient and ergonomically challenging, requiring precise alignment and significant rotational force to lock, making them less user-friendly compared to jaw pressure cookers, which are heavier and more expensive to manufacture.
Innovation Solution
A pressure cooker design featuring a bayonet locking system with a pivoting lid sub-assembly and a control member that allows for intuitive locking and unlocking, eliminating the need for manual immobilization of the tank and reducing manual effort, while being lightweight, safe, and easy to use with one hand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a bayonet locking system is used in a pressure cooker, then the appliance is lighter and less expensive to manufacture, but it requires significant manual effort and complex alignment operations that are difficult to use
Solution Approach 1:
The lid subassembly performs the alignment operation automatically when brought onto the tank. The guide elements on the tank engage with corresponding elements on the lid subassembly, causing the lid to self-align into the correct angular position without requiring manual alignment by the user. This eliminates the complex alignment step while maintaining the lightweight bayonet locking design.
Solution Approach 2:
The patent replaces the manual mechanical alignment operation with an automatic mechanical guidance system. The guide elements and engagement features create a mechanical pathway that automatically positions the lid correctly, substituting the need for user skill and effort in alignment with a passive mechanical guidance mechanism.
2Ease of manufacture
If a bayonet locking system is used in a pressure cooker, then the appliance is lighter and less expensive to manufacture, but it requires the user to exert significant rotational force that is not intuitive
Solution Approach 1:
The control member automatically performs the rotation function when the user applies downward pressure. The pivoting mechanism converts the vertical pressing motion into the necessary rotational movement of the lid subassembly, eliminating the need for the user to directly apply rotational force. This makes the operation more intuitive while keeping the manufacturing simple.
Solution Approach 2:
The patent changes the parameter of the locking gesture from rotational motion to vertical pressing motion. By modifying the type of user input required (from rotation to pressing), the system becomes more intuitive and easier to operate, while the internal mechanism handles the conversion to the necessary rotational movement for locking.
3Weight of moving object
If a bayonet locking system is used in a pressure cooker, then the appliance is lighter, but it requires two hands for operation which reduces portability and convenience
Solution Approach 1:
The control member serves multiple functions: it is used to apply downward pressure to initiate the locking rotation, and it also serves as the gripping handle for lifting and carrying the pressure cooker. This multi-functionality allows one-hand operation for both locking and portability, maintaining the lightweight design while increasing versatility.
Solution Approach 2:
The patent merges the control function and the carrying handle function into a single integrated component. The control member that operates the locking mechanism is also shaped and positioned to serve as the primary gripping point for lifting the appliance, combining two previously separate functions into one element that enables one-hand operation.
Data Source
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AI summary
- The invention relates to a pressure cooking appliance comprising a tank (2), a lid (3), as well as a bayonet locking system, said appliance (1) being characterized in that it comprises a sub- lid assembly which includes both said lid (3) and a support (10) attached to said lid (3) so that the latter can pivot, said apparatus (1) comprising a locking/unlocking control member (11) as well as a device for transforming the movement of the control member (11) into pivoting of the cover (3) relative to the support (10), said control member being shaped to be able to be grasped manually and being connected to the support (10 ) so that a manual lifting, via the control member (11) of said cover sub-assembly, causes the return of the control member (11) to the unlocking position.