Card Edge Connector Rotational Daughter Board Support
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Solution Overview
Problem
Conventional card edge connectors struggle to securely support and retain larger daughter boards, as short supporting portions cause instability and transverse shifting, while existing solutions either lack elasticity or require costly redesign for parallel insertion.
Innovation Solution
A card edge connector design featuring an insulating housing with elongated slots, stopping arms, and supporting walls that remain immovable during rotation, ensuring stable support and retention of larger daughter boards through integrated stopping and supporting structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the supporting portion is made short to provide elasticity in the latching arm, then the latching arm can pivot outwards to provide elasticity, but the larger daughter board cannot be supported nicely and will slope down
Solution Approach 1:
The latching arm is divided into two separate components: the latching arm itself and the supporting portion. This segmentation allows the latching arm to maintain its elasticity for latching function while the separate supporting portion can be designed with sufficient length to stably support larger daughter boards without compromising the latching arm's pivoting capability.
2Length of moving object
If the latching arm is made long to support larger daughter boards, then the supporting capability is improved, but the latching arm becomes easy to move transversely causing the daughter board to shift
Solution Approach 1:
By separating the latching arm from the supporting portion, the design allows the supporting portion to be extended in length for stable support of larger daughter boards, while the latching arm remains a separate, controlled component that cannot easily move transversely, thus preventing daughter board shifting.
Solution Approach 2:
The supporting portion is integrated with the latching arm structure to form a unified assembly, where the supporting portion extends from the latching arm. This merging ensures that the extended support structure works cooperatively with the latching mechanism, providing both stability and transverse constraint.
3Ease of operation
If a new connector design is created for parallel insertion as disclosed in U.S. Pat. No. 5,393,234, then the daughter board can be inserted parallel, but it requires re-designing a new mould which increases cost
Solution Approach 1:
The connector design incorporates features that accommodate both rotational insertion and parallel insertion methods through the same basic structure. The separated latching arm and supporting portion configuration allows the connector to function with different insertion orientations without requiring complete redesign, thus maintaining manufacturing cost efficiency while providing operational flexibility.
Data Source
AI summary
A card edge connector adapted for rotatably receiving a larger daughter board to a mother board includes an insulating housing defining an elongated slot therein, a plurality of contacts received in the housing, a pair of stopping arms setting to the ends of the housing respectively and a supporting wall integrating with the stopping arm and being longer near to the stopping arm. The stopping arms and the supporting walls are immovable when the daughter board rotating.