Cooking hob plate
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Solution Overview
Problem
Hob plates made of glass or glass ceramic are vulnerable to mechanical damage during assembly and disassembly, which can lead to wear and tear on coatings or decorations applied to the underside, making them visible and affecting the perceived quality.
Innovation Solution
A protective film is applied circumferentially to the edge region of the underside of the hob plate, specifically between the mounting rail and the outer edge, to prevent mechanical wear and protect the coatings or decorations. The film is designed with an adhesive surface and a polyurethane coating, and is either partially or almost transparent, with a thickness between 50 and 600 μm, ensuring it remains on the plate during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the hob plate is handled during assembly and disassembly, then the mounting operation can be performed, but mechanical damage occurs to the coatings or decorations on the underside
Solution Approach 1:
A protective film is applied to the underside of the hob plate before the coating process. This preliminary protective layer prevents mechanical damage to the coating during subsequent assembly and disassembly operations, allowing the hob plate to be handled without compromising the integrity of the decorative coating.
Solution Approach 2:
The protective film acts as a cushioning layer between the coating and external mechanical forces. During assembly and disassembly, this film absorbs and distributes the mechanical stresses, preventing direct contact between handling forces and the vulnerable coating surface.
2Reliability
If a protective film is applied to the underside edge region, then mechanical protection is provided, but the device complexity increases
Solution Approach 1:
The protective film is applied selectively only to the edge region of the underside of the hob plate, rather than covering the entire surface. This localized application provides mechanical protection where it is most needed during handling, while minimizing the added complexity and material usage compared to a full-surface protective layer.
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 protective film effectively shields the underside coatings from mechanical stress during handling, preventing damage and maintaining the visual appearance of the hob plate, thus enhancing its durability and aesthetic integrity.
Implementation Method 1
The protective film has an adhesive surface for bonding the protective film to the hob plate
Data Source
Figure 1~2
Figure 3
AI summary
The plate (10) has a lower side (18) lying opposite to an upper side (16), where the plate is made of glass or glass ceramic. A mounting frame (14) is connected with the lower side. A protective film (20) is arranged partly in an edge area of the lower side in a rotatable manner and protects a coating of the lower side from mechanical wear. The mounting frame is formed as a partly rotating mounting rail, which is spaced apart from an edge of the plate. The film is arranged in a strip-shape in a region between the rail and an outer rim of the plate. Independent claims are also included for the following: (1) a hob (2) a method for manufacturing a hob.