Pressure Cooker Two-Piece Handle for Stronger Mounting and Compact Packaging
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Solution Overview
Problem
Pressure cookers face issues with handle mounting strength and packaging size, particularly due to the risk of damage from over-tightening screws and the need for larger packaging to accommodate attached handle dimensions.
Innovation Solution
A two-piece handle design with a common extended coupling nut provides increased mounting strength and reduced packaging dimensions by using shared hex nuts for metal-on-metal contact, preventing damage and allowing for easy assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a single-piece handle design is used, then the packaging dimensions are larger, but the mounting strength is reduced and the risk of damage from over-tightening increases
Solution Approach 1:
The handle is divided into two separate pieces: a cover base portion that remains attached to the pressure cooker and a cover grip portion that is detached for packaging. This segmentation allows the handle to be packaged in a compact state while maintaining full mounting strength when assembled, as the coupling nut and screw mechanism provides robust metal-on-metal connection points.
2Volume of stationary object
If conventional handle attachment methods are used, then the packaging size is reduced, but the mounting strength is insufficient and connector failure occurs
Solution Approach 1:
The handle assembly utilizes composite construction with metal coupling nuts and screws providing strong connection points, while the handle portions can be made from polymeric materials. This composite approach allows compact packaging while ensuring mounting strength through the metal fastening components that prevent connector failure.
3Strength
If the handle is pre-attached to the cover, then the mounting strength is maximized, but the packaging dimensions increase
Solution Approach 1:
The handle is segmented into a cover base portion and a cover grip portion that are separated during packaging. The cover base portion with its coupling nut is pre-attached to the cover for maximum mounting strength, while the cover grip portion is attached separately at the point of use, optimizing both strength and packaging efficiency.
4Volume of stationary object
If polymeric materials are used for the handle, then the packaging size is reduced, but the resistance to over-tightening damage is insufficient
Solution Approach 1:
The handle design employs composite materials where metal coupling nuts and screws are used specifically at the connection points to provide resistance to over-tightening damage, while the handle portions can be made from lighter polymeric materials for compact packaging. This composite approach maintains reliability at critical stress points while optimizing packaging dimensions.
Data Source
AI summary
An improved pressure cooker design including a two-piece handle utilizing a common connection point to a cover to increase resistance to damage due to over tightening of connecting screws while simultaneously allowing the use of a conventional handle size with a reduction in overall packaging size. The two-piece handle design includes a cover base portion and a cover grip portion wherein a pair of nuts are mounted within the cover base portion to receive coupling screws at both ends of the nuts for joining the cover and the cover grip portion to the cover base portion. Tightening of the coupling screws provides for continuous metal on metal contact eliminating damage to weaker polymeric materials while allowing a consumer to quickly and easily attach the cover grip portion of the two-piece handle to the cover base portion at a point of use so as reduce overall packaging dimensions.