Pressure Cooker Lid Rocker Locking for Automatic Pressure Safety
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pressure cookers have complex and costly locking mechanisms that are not straightforward to handle and maintain, lacking a reliable and cost-effective solution for secure lid locking without additional parts or complex production processes.
Innovation Solution
A pressure cooker with a locking device featuring a movable rocker mounted in the lid handle, interacting with the pot's pressure element, utilizing a bayonet contour for automatic locking and unlocking, and incorporating a recess or stamped formation for cost-effective mass production, ensuring functional reliability and aesthetic protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex locking mechanism with multiple parts is used, then the locking reliability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple locking functions into a single integrated rocker mechanism. The rocker simultaneously interacts with the pressure element, the bayonet contour, and the recess/stamped formation to provide both automatic locking and positioning functions, eliminating the need for separate locking components and reducing overall device complexity while maintaining reliability
Solution Approach 2:
The rocker serves multiple functions: it acts as a locking element that engages with the pressure element, a positioning element that follows the bayonet contour for rotational control, and an actuator that interacts with the recess or stamped formation. This multi-functionality reduces the number of parts needed while ensuring reliable locking operation
2Reliability
If additional locking parts are added, then the locking reliability is improved, but the manufacturing cost increases
Solution Approach 1:
The locking mechanism is merged into the existing pressure cooker structure, with the rocker integrated into the lid assembly and interacting with features already present in the pot (bayonet contour on the rim, recess or stamped formation). This approach avoids adding separate locking components that would increase manufacturing complexity and cost
Solution Approach 2:
The locking mechanism utilizes the pressure cooker's own structural features (the bayonet contour and recess/stamped formation) rather than requiring external locking parts. The system essentially locks itself through the interaction between the rocker and these pre-existing structural elements, eliminating the need for additional manufactured locking components
3Ease of operation
If a manual locking mechanism is used, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The locking mechanism is designed to operate automatically based on the pressure differential and the rotational position of the lid. The rocker self-actuates through its interaction with the pressure element and the bayonet contour, eliminating the need for manual locking operations while keeping the mechanism simple and intuitive to use
Solution Approach 2:
The rocker is pre-positioned and spring-loaded to engage with the pressure element and follow the bayonet contour. When the lid is rotated into place, the rocker automatically assumes its locked position without requiring any additional manual action from the user, providing both simplicity and reliability
Data Source
AI summary
The pressure cooker has a pot (2) with a base and a side wall and an upper rim (6). A lid (3) can be connected to the pot (2) in a sealed manner along the abovementioned upper rim (6). In the presence of a predetermined positive pressure, a locking device (12) connects the lid (3) to the pot in a non-releasable manner in conjunction with a pressure element (11) arranged on the lid (3). The locking device (12), in a fitting (5) of the lid (3), has a rocker (12a) which is mounted in a movable manner and, for control purposes and in order to lock the lid (3), interacts with the pot (2) and the abovementioned pressure element (11). Locking takes place automatically when the pressure cooker is closed and the locking means can be produced in a reliable and cost-effective manner.