Offset Blanking Contact for USB 3.0 Connector Soldering
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Solution Overview
Problem
The narrow pitches of USB 3.0 electrical connectors on circuit boards often lead to interference between contact soldering portions, making it challenging to arrange contacts effectively.
Innovation Solution
The design includes a first blanking contact set with a connecting portion, a contacting portion, and a soldering portion, where the central axis of the contacting portion is offset from the soldering portion, allowing for adjustable pitches between soldering portions to prevent interference and optimize space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the pitch between contacts is reduced to fit more contacts in the connector, then the quantity of contacts increases, but the soldering portions interfere with each other
Solution Approach 1:
The patent introduces an offset between the contacting portion and soldering portion along the longitudinal direction of the connector. This dimensional separation allows the pitch between contacting portions to be different from the pitch between soldering portions, enabling independent optimization of contact density and soldering clearance
Solution Approach 2:
The contact structure is segmented into distinct functional portions: contacting portion, connecting portion, and soldering portion. This segmentation allows each portion to be positioned independently, with the contacting portions arranged for optimal electrical connection while soldering portions are offset to avoid interference during welding operations
2Manufacturing precision
If the pitch between soldering portions is reduced to match the contacting portion pitch, then the contact arrangement is optimized, but the soldering portions interfere with each other during welding
Solution Approach 1:
The patent utilizes the longitudinal dimension of the connector to create an offset between contacting portions and soldering portions. This allows the pitch between contacting portions to maintain precise USB 3.0 spacing while the pitch between soldering portions is increased to provide adequate clearance for welding operations
Solution Approach 2:
The connecting portion acts as an intermediary element that bridges the contacting portion and soldering portion. It transmits the mechanical and electrical connection while allowing spatial separation between the contacting and soldering functions, thus resolving the conflict between precise contact arrangement and ease of welding
Data Source
AI summary
An electrical receptacle connector includes an insulator and a blanking contact set. The insulator includes a tongue portion and an insulator rear end. The blanking contact set includes a plurality of blanking contacts. At least one of the blanking contacts includes a connecting portion, a contacting portion, and a soldering portion. The connecting portion is combined with the insulator. The contacting portion extends from the connecting portion toward the tongue portion and stretches out of a first surface of the tongue portion. The soldering portion extends from the connecting portion toward the insulator rear end and stretches out of the insulator rear end. A central axis of the contacting portion is spaced from a central axis of the soldering portion by an offset. The connecting portion connects the contacting portion and the soldering portion.