Pressure Cooker Pot Lid Assembly with Connector-Driven Lock Mechanism
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Solution Overview
Problem
The existing clamp-type pressure pots have complex structures due to multiple parts and require numerous welding steps, leading to high material and labor costs, as well as production difficulties.
Innovation Solution
A pot lid assembly for a pressure cooker with a connector extending in the circumferential direction, connected to lock members, driven by a drive device to move between lock and unlock positions, simplifying the structure and assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the connection rod and clamp are connected through welding or screw connection, then the structural strength is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The connector integrates multiple functions into a single component: it serves as both the connection element and the drive transmission element. The connector is directly formed with driving portions that engage with the lock members, eliminating the need for separate connection rods, clamps, and welding operations. This merging reduces the number of parts and assembly steps while maintaining structural integrity through the unified design.
Solution Approach 2:
The connector performs multiple functions simultaneously: it connects the drive device to the lock members, transmits driving force through its deformation, and provides a integrated structure that replaces multiple separate components. This multi-functionality reduces device complexity while maintaining the necessary mechanical strength through the connector's elastic deformation capability.
2Manufacturing precision
If multiple welding steps are used to assemble the pot lid, then the manufacturing precision is improved, but the productivity decreases
Solution Approach 1:
The design segments the functional requirements into the connector's integrated structure with driving portions, allowing the drive device to directly actuate the lock members through the connector's elastic deformation. This segmentation eliminates the need for multiple welding operations and separate assembly steps, improving productivity while maintaining precision through the direct mechanical coupling.
Solution Approach 2:
The connector is pre-formed with the necessary driving portions and elastic properties during manufacturing. This preliminary preparation allows the assembly process to simply involve positioning and engaging the pre-formed connector, eliminating the need for on-site welding or complex assembly operations, thereby improving productivity without sacrificing manufacturing precision.
3Reliability
If a clamp-type structure with multiple parts is used, then the reliability is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The connector merges the functions of multiple separate parts (connection rod, clamp, and drive transmission elements) into a single integrated component. This reduces the number of parts that need to be manufactured and assembled, significantly improving ease of manufacture while maintaining reliability through the connector's elastic deformation capability that ensures secure engagement.
Solution Approach 2:
The connector's elastic deformation provides self-service functionality: it automatically engages and disengages the lock members through its inherent elastic properties when the drive device operates. This self-service mechanism eliminates the need for complex assembly and adjustment operations during manufacturing, improving ease of manufacture while ensuring reliable operation through the elastic engagement.
Data Source
AI summary
A pot lid assembly includes a lid body, a plurality of lock members arranged in a circumferential direction of the lid body and each being movable between a lock position at which the lock member is close to a middle of the lid body and an unlock position at which the lock member is far away from the middle of the lid body, a connector extending in the circumferential direction of the lid body and connected to the plurality of lock members, and a drive device connected to the connector. The drive device is configured to drive the connector deform to drive the plurality of lock member.