Bayonet pressure cooker with interlocking pot and lid handles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pressure cookers face usability and safety issues due to difficulties in easily positioning the lid, potential security risks, and ergonomic concerns, particularly when the bowl and lid ramps are misaligned, which can lead to incomplete interlocking and compromised safety during pressure cooking.
Innovation Solution
A pressure cooking appliance with a bayonet locking system and a safety element that includes a main body fixed to the lid, a movable lock, and a gripping member, allowing for intuitive locking and unlocking by pivoting the lid relative to the tank with a reduced angular travel, ensuring proper alignment and secure handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bowl and lid handles are angularly offset to enable locking, then the bayonet locking system can function, but the user experiences difficulty in easily and quickly positioning the lid in the pre-locking position
Solution Approach 1:
The lid handle is designed with a predetermined angular offset relative to the bowl handle, establishing the pre-locking position as the natural starting alignment when the lid is placed on the bowl. This preliminary geometric configuration eliminates the need for user adjustment and ensures automatic correct positioning.
Solution Approach 2:
A safety element is introduced as an intermediary component that mechanically connects the lid handle and bowl handle. This safety element engages between the two handles to maintain their angular offset relationship, preventing misalignment and ensuring the lid remains in the correct pre-locking position during the locking operation.
2Reliability
If the bowl and lid ramps are partially engaged while handles are misaligned, then the locking system can engage, but safety is compromised due to inability to ensure proper interlocking
Solution Approach 1:
The safety element is designed to prevent the harmful condition of handle misalignment during ramp engagement. By mechanically coupling the lid handle and bowl handle, the safety element applies a counteracting force that maintains proper alignment, thereby preventing the safety compromise that would otherwise occur during the locking process.
Solution Approach 2:
The safety element establishes proper handle alignment as a prerequisite condition before the bayonet locking system completes its locking action. The interlocking geometry of the safety element ensures that the handles are correctly positioned and maintained in alignment throughout the entire locking sequence, preventing any misalignment that could compromise safety.
3Reliability
If the lid and bowl handles are in vertical mutual alignment at locking position, then interlocking is ensured, but the device requires greater angular travel from pre-locking to locking position
Solution Approach 1:
The safety element is configured to establish the final vertical alignment of the handles as the natural endpoint of a limited angular rotation. By designing the interlocking geometry of the safety element with specific angular parameters, the system achieves complete handle alignment and secure interlocking within a reduced angular travel range, eliminating the need for excessive rotation.
Data Source
Figure 1~3
Figure 4~6
Figure 7~8
AI summary
- Cooking appliance (1) under pressure comprising a tank (2) provided with a tank handle (3), a cover (5), as well as a bayonet locking system designed to pass from an unlocking configuration to a locking configuration by pivoting the lid (5) from a predetermined pre-locking position of the lid (5), to bring the lid (5) into a predetermined locking position, said apparatus (1) comprising a safety element (12) cooperating in interlocking with the bowl handle (3) when the cover (5) occupies said predetermined locking position, said device (1) being characterized in that said safety element (12) comprises a body main body (13) fixedly attached to the cover (5), as well as a latch (16) movably mounted relative to said main body (13), all of said latch (16) being in radial correspondence with said bowl handle (3 ) not only when the cover (5) occupies said predetermined locking position, but also when it occupies said predetermined pre-locking position. - Pressure cookers.