Combined Fastening and Contacting System for Superimposed Circuit Boards
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Solution Overview
Problem
Existing methods for fixing electrical components to circuit boards using adhesives result in non-detachable connections, making it difficult to replace faulty components and do not provide safe electrical contacting between superimposed circuit boards, especially in the automobile sector, where they also compromise electromagnetic compatibility and vibrational resistance.
Innovation Solution
A combined fastening and contacting system comprising a holding frame and a pressing frame with adjustable, flexible pressing pins that securely attach circuit boards without adhesives, allowing for easy replacement of faulty components and safe electrical contacting, while optimizing cooling and routing of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is used to fix electrical components to circuit boards, then the components are securely fixed in position, but the connection becomes non-detachable making faulty components不可更换
Solution Approach 1:
The patent divides the connection system into two independent parts: a detachable mechanical connection system (screws, clips, or latches) for securing components, and a separate adhesive layer for providing fixed positioning. This segmentation allows the mechanical connection to be reversible for repairs while the adhesive maintains stable positioning, resolving the contradiction between secure fixation and component replaceability.
2Manufacturing precision
If adhesive is used for fixing components, then positioning is achieved, but safe electrical contacting between superimposed circuit boards is not provided
Solution Approach 1:
The patent merges two previously separate functions into a single integrated system: the mechanical connection element simultaneously provides both secure fixation and reliable electrical contact between superimposed circuit boards. This eliminates the need for separate adhesive and contact mechanisms, ensuring both positioning precision and electrical safety are achieved by the same structural feature.
3Adaptability or versatility
If flat ribbon cables are used for electrical contacting, then flexibility is provided, but power transmission is limited and electromagnetic compatibility is negatively affected
Solution Approach 1:
The patent extracts the electrical contact function from flexible cable systems and integrates it directly into the rigid mechanical connection structure. By taking out the cable and incorporating conductive elements into the fixation mechanism itself, the system achieves both electrical contact capability and improved electromagnetic compatibility while maintaining the flexibility needed for assembly variations.
4Reliability
If plug connections with housing are used, then electrical contacting is achieved, but increased space is required
Solution Approach 1:
The patent combines the electrical contact function with the mechanical fixation structure, eliminating the need for separate plug connections and housing. The same structural elements that provide mechanical support and positioning also serve as electrical conductors, thereby achieving reliable electrical contacting while significantly reducing the space required compared to traditional plug-and-housing systems.
Data Source
AI summary
The invention relates to a combined fastening and contacting system for electrical components on superimposed circuit boards in an electronic housing, especially for the automobile sector, as well as a method for fastening and contacting electrical components. The novel fastening and contacting system has two parts, one of which is embodied as a holding frame for electrical components while the other part is configured as a pressing frame for fixing the holding frame. There is formed a combined fastening and contacting system for electrical components on superimposed circuit boards, which makes it possible to replace faulty electrical components in a simple fashion while allowing superimposed circuit boards to be electrically contacted in a safe manner. The system is particularly suitable for the automobile sector.