Housing Cover Conductive Web for Automotive Sealing
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Solution Overview
Problem
Conventional sealing methods for housing covers in automotive applications are complex, expensive, and require additional components, with issues such as manual insertion of sealing cords and the need for electrical contacts to ensure electromagnetic compatibility.
Innovation Solution
A housing cover design featuring an edge region with a conductive material layer and a second layer with a web configuration that allows for simple, robust, and economic electrically conductive connections between the cover and the housing lower part, using reshaping techniques like bending or embossing to form connecting points without additional parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealing cords are used for sealing between housing cover and housing lower part, then sealing function is ensured, but manual insertion is required and assembly process becomes complex and expensive
Solution Approach 1:
The patent extracts the sealing cord from the groove and replaces it with a coating applied directly to the housing surface. The coating itself forms the sealing layer, eliminating the need for separate sealing cords and their complex insertion processes into grooves.
Solution Approach 2:
The patent introduces an intermediate coating layer between the housing and housing cover that serves as the sealing interface. This coating acts as a mediator that provides sealing without requiring mechanical insertion of separate sealing components.
2Reliability
If complete-surface precoated sealing layers are used, then sealing function is provided, but electrical conductivity between layers is prevented and additional electrical contacts are required
Solution Approach 1:
The patent applies coating only in specific regions where sealing is needed, rather than complete-surface coating. This local application maintains electrical conductivity in uncovered areas, eliminating the need for additional electrical contacts while still providing adequate sealing.
Solution Approach 2:
Instead of coating the entire surface, the patent uses partial coating only in the regions required for sealing. This partial action approach suffices for the sealing function while preserving electrical conductivity elsewhere.
3Reliability
If conventional sealing methods with multiple components are used, then sealing is achieved, but production cost and assembly complexity increase
Solution Approach 1:
The patent merges the sealing function directly into the housing coating, combining what were previously separate components (housing, coating, sealing cord) into an integrated solution. This reduces part count and manufacturing complexity while maintaining sealing effectiveness.
Solution Approach 2:
The coating serves multiple functions simultaneously: it provides sealing, protects the housing surface, and maintains electrical conductivity where not applied. This multi-functionality eliminates the need for separate sealing cords and reduces overall system complexity.
Data Source
AI summary
A housing cover and a housing are disclosed, which may be used in automotive vehicle construction. There, they serve for example for the purpose of offering protection to a sensitive component or to a group of components, for example a traction battery in the electric car, and, conversely, of protecting the environment from the component or the group of components or for example from electromagnetic radiation emanating from the component.