Glazing Conductive Structure Insulation via High-Resistance Adhesive
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Solution Overview
Problem
Existing window elements with electrically conductive structures for alarm systems face issues with insulation quality, leading to nuisance alarms due to insufficient electrical insulation resistance, particularly at the intersection of connectors and spacer elements, and are prone to moisture penetration, which compromises the seal and can cause short circuits.
Innovation Solution
The conductive structure is arranged entirely outside the field of vision, covered by a bead of adhesive with high electrical resistance, and protected from humidity, with additional insulating materials inserted between the spacer element and the conductive structure to enhance insulation security, ensuring the conductive structure is masked and protected from corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conductive structure is arranged inside the field of vision on the pane surface, then the alarm function can be implemented, but the conductive structure becomes visible and aesthetically unacceptable
Solution Approach 1:
The conductive structure is moved from the visible pane surface to the reverse side of the pane, utilizing the third dimension (depth/thickness) to hide the conductive traces while maintaining the alarm detection function. The connector elements extend through the pane thickness to provide electrical connection while keeping the conductive pattern invisible from the front.
2Shape
If the conductive structure is covered by the spacer element, then it is masked from view, but electrical insulation problems occur at the intersection of connectors and spacer element
Solution Approach 1:
The adhesive bead is modified locally at the intersection region with the spacer element to provide enhanced electrical insulation properties. This localized modification ensures high insulation resistance (at least 10 MΩ) specifically where the connector elements pass through or near the spacer, while maintaining the overall aesthetic masking of the conductive structure.
3Reliability
If adhesive with high electrical resistance is used to cover the conductive structure, then insulation resistance increases to at least 10 MΩ, but the adhesive must maintain sealing function against humidity
Solution Approach 1:
The adhesive system is designed as a composite material that combines high electrical resistance properties with effective moisture barrier characteristics. This composite adhesive simultaneously provides the required insulation resistance of at least 10 MΩ and maintains the sealing function to prevent humidity penetration, resolving the contradiction between electrical insulation and environmental protection.
Data Source
Figure 1~3
Figure 4~6
AI summary
The invention relates to a glazing member (1) that comprises at least one prestressed glazing (2) having a surface that bears an electric conducting structure (4) connected to electric connection points (5) on the edge of the glazing for connecting the same to the outside, the glazing being connected to a frame-shaped spreading member, that surrounds the field of vision of the glazing member, using a glue bead having a high electric resistance (3A). According to the invention, the conducting structure (4) itself has the shape of a loop or a continuous conducting track, and is provided outside the field of vision of the glazing member (1) substantially or entirely within the surface area covered by the spreading member (3) and the glue bead having a high electric resistance (3A).