Snap-Fit PCB Connector for Low-Profile Stable Board Coupling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional connectors used to connect daughterboards to motherboards face challenges in maintaining stable connections due to miniaturization, leading to slanting and reduced reliability, especially when the connectors are placed on the edges of the boards.
Innovation Solution
A snap-fit connector with multiple sections, including a standoff, flange, and prongs, is used to securely couple circuit boards, providing both mechanical and electrical connections while minimizing the Z-height, ensuring stability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the connector is miniaturized to reduce Z-height, then the Z-height of the connected motherboard and daughterboard is reduced, but the ability of the connector to maintain a stable connection between the daughterboard and the motherboard is reduced
Solution Approach 1:
The connector is divided into multiple functional sections: a standoff section for electrical connection, a flange section for positioning, and prongs for mechanical engagement. This segmentation allows each section to perform its specific function optimally while maintaining a compact overall structure that reduces Z-height without compromising connection stability.
Solution Approach 2:
The prongs are inserted through holes in the daughterboard and engaged with corresponding features on the motherboard, creating a nested configuration where the connector components are arranged concentrically. This nesting approach minimizes the vertical profile (Z-height) while maintaining robust mechanical and electrical connections.
2Ease of manufacture
If the connector is placed on the edge of the daughterboard and motherboard, then the connection is established, but the daughterboard slants upward or downward with respect to the motherboard
Solution Approach 1:
The flange section of the connector is designed with an asymmetric geometry that provides differential support to the daughterboard. The flange contacts the motherboard at specific offset points, creating a stable triangular support base that prevents slanting while accommodating edge placement of the connector.
Solution Approach 2:
The flange section acts as an intermediary element between the daughterboard and motherboard, providing a stable reference surface that mediates the connection. This flange intermediary prevents direct slanting by distributing the mechanical load across multiple contact points with the motherboard.
3Length of stationary object
If the connector is miniaturized, then the Z-height is reduced, but the reliability of the connection is reduced
Solution Approach 1:
Different sections of the connector are designed with locally optimized properties: the prongs are made resilient for reliable mechanical engagement, the standoff section provides precise electrical connection, and the flange section ensures stable positioning. This local quality optimization maintains connection reliability despite overall miniaturization.
Data Source
AI summary
A snap-fit connector electrically and mechanically couples a first circuit board to a second circuit board. A first portion of the snap-fit connector is positioned on or within the first circuit board. The first portion of the snap-fit connector is electrically coupled to a trace associated with an electronic component on the first circuit board. A through-hole defined by the second circuit board is removably coupled to a top portion of the snap-fit connector. The through-hole on the second circuit board is electrically coupled to a trace of an electronic component provided on the second circuit board. Thus, the snap-fit connector electrically couples the electronic component on the first circuit board with the electronic component on the second circuit board.