Flexible Card Circuit Assembly with Clip-Mounted Extension Panel
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Solution Overview
Problem
Conventional child-resistant unit dose packaging systems face challenges in securely and robustly connecting printed electronic traces on flexible cards to electronic circuit boards, particularly in low-cost mass-production environments, where traditional methods like plug-and-socket devices or soldered connections are impractical, and adhesive tapes are not robust enough for shipping and handling.
Innovation Solution
A circuit assembly is introduced, comprising a flexible card with a printed circuit trace and breakable portions, where an extension panel is folded over a circuit board to align contact points, and a clip is used to apply a sandwiching force, mechanically attaching the circuit board and securing electrical contact without adhesives, allowing for monitoring of medication compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive tapes are used to connect printed circuit traces to circuit boards, then ease of manufacture is improved, but reliability and robustness deteriorate due to insufficient durability during shipping and handling
Solution Approach 1:
The patent replaces adhesive bonding (chemical/mechanical hybrid) with a purely mechanical connection system. The circuit board is inserted into a recess in the flexible card, and a clip member mechanically secures the circuit board in place, providing robust connection without relying on adhesive tapes that fail during shipping and handling.
Solution Approach 2:
The connection system is divided into distinct functional components: the flexible card with recess, the circuit board, and the clip member. This segmentation allows each component to be optimized independently and assembled through simple insertion and clipping operations, improving both ease of manufacture and reliability.
2Reliability
If plug-and-socket devices or soldered connections are used, then electrical connection reliability is improved, but device complexity and manufacturing difficulty increase making them impractical for low-cost mass production
Solution Approach 1:
The patent employs a simple, low-cost clip member that can be easily manufactured and assembled in high volumes. The clip provides sufficient mechanical and electrical connection reliability for the application without the complexity of soldered connections or plug-and-socket devices, making it ideal for low-cost mass production of disposable or single-use packaging systems.
Solution Approach 2:
The clip member simultaneously provides both mechanical retention (holding the circuit board in place) and electrical connection (contacting the circuit traces). This merging of mechanical and electrical functions into a single component simplifies the overall device complexity while maintaining reliable electrical connection.
3Ease of manufacture
If traditional connection methods are used, then ease of manufacture is maintained, but the robustness and durability of electrical connection deteriorate under shipping and handling conditions
Solution Approach 1:
The flexible card is pre-formed with a recess that precisely accommodates the circuit board. This preliminary preparation of the mounting structure allows the circuit board to be inserted and secured without requiring complex alignment or attachment procedures, maintaining ease of manufacture while ensuring robust connection strength through the clip member.
Data Source
AI summary
A circuit assembly includes a flexible card having a main panel and an extension panel foldably connected along a fold line and a card circuit disposed on the flexible card and having one or more contact points disposed proximate the fold line, and a circuit board having one or more electrical contacts formed on a surface of the circuit board. The flexible card and the circuit board can be disposed in face-to-face contact with each contact point of the card circuit is in registry with a respective electrical contact of the circuit board, with the extension panel folded at the fold line over the circuit board. The assembly includes a clip disposed over the folded extension panel and main panel to apply a sandwiching force to secure the circuit board and the card circuit in electrical contact.