Glass Pot Lid Handle Bonding Without Through-Holes
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Solution Overview
Problem
Existing methods for attaching stainless steel handles to glass pan lids require drilling holes, leading to heat conduction issues, high tolerance problems, dirt trapping, and steam flow obstruction, making them impractical for thermal shock resistance and dishwasher suitability.
Innovation Solution
A glass lid-to-stainless steel handle connection using an adhesive connection with a spacer, such as a silicone ring or spacer plate, eliminating the need for through-boring and providing a visually appealing, high-temperature-resistant, and dishwasher-proof solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a screw connection with through-boring is used to attach the handle to the glass lid, then a secure mechanical connection is achieved, but heat conduction occurs leading to a hot handle and thermal shock resistance is compromised
Solution Approach 1:
The patent introduces an intermediary adhesive layer between the handle and glass lid that acts as a thermal barrier. The adhesive fills the connection space and prevents direct thermal conduction path, while still providing mechanical bonding strength. This mediator resolves the contradiction by blocking heat flow without compromising connection integrity.
Solution Approach 2:
The patent replaces the mechanical screw connection system with a chemical adhesive bonding system. Instead of using penetrating screws that conduct heat, the handle is attached via adhesive applied to the underside surface, eliminating the thermal conduction path while maintaining secure mechanical attachment through chemical bonding.
2Strength
If holes are drilled into the glass surface for screw attachment, then the handle can be securely mounted, but additional glass processing operations are required increasing manufacturing complexity
Solution Approach 1:
The patent replaces the mechanical drilling and screw insertion process with a surface application process. The handle is attached by applying adhesive to the underside of the handle or glass surface, eliminating the need for drilling holes, tapping threads, or inserting fasteners, thereby simplifying manufacturing.
Solution Approach 2:
The patent extracts the fastening function from the glass material itself. Instead of modifying the glass to accept screws (drilling holes), the attachment mechanism is separated into an independent adhesive layer that provides the fastening function without requiring modifications to the glass structure.
3Strength
If screws and nuts are used inside the lid for handle attachment, then a secure connection is achieved, but dirt accumulation occurs at the raised portions
Solution Approach 1:
The patent replaces the raised screw and nut components with a flush adhesive bond. The adhesive creates a smooth, coplanar surface between the handle and glass lid, eliminating protruding elements where dirt could accumulate, while maintaining secure attachment through chemical bonding.
4Reliability
If sealing elements are added to prevent steam flow and water accumulation, then thermal separation and dishwasher suitability are improved, but device complexity increases
Solution Approach 1:
The patent merges multiple functions into the adhesive layer itself. The adhesive simultaneously provides mechanical bonding, thermal insulation, and sealing against steam and water penetration. This consolidation eliminates the need for separate sealing elements, reducing component count while maintaining reliability.
Solution Approach 2:
The adhesive layer is designed to perform multiple functions: structural attachment, thermal barrier, and moisture/steam seal. This multi-functional element replaces what would traditionally require separate components for each function, simplifying the overall device while improving reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures a secure, high-temperature-resistant, and dishwasher-proof connection without additional glass processing steps, preventing heat conduction and dirt accumulation, while maintaining a clean and visually appealing design.
Implementation Method 1
the cavity being filled at least partially with the adhesive connecting the lid handle to the glass surface
Implementation Method 2
the spacer prescribing at least one cavity between the underside of the lid handle and the outer surface of the glass lid
Data Source
AI summary
The invention relates to a pan lid made of glass having a lid handle attached on the surface thereof directed outwards, the lid handle being connected to the glass surface via an adhesive connection.