Insulative Housing Receiving Slots for USB Connector Soldering
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Solution Overview
Problem
Existing USB connectors face issues with rosin flux volatilization during the soldering process, leading to accumulation and resulting in null or empty soldering due to insert-molded soldering sections.
Innovation Solution
An electrical connector design featuring an insulative housing with receiving slots between soldering portions to store soldering material, a metallic shielding plate to reduce high-frequency interference, and a shielding shell for enhanced waterproofing and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If soldering sections are insert-molded with the housing, then the electrical connector structure is simplified and manufacturing is easier, but rosin flux volatilization accumulates and causes null or empty soldering
Solution Approach 1:
The patent divides the housing structure into multiple sections with receiving slots created between adjacent soldering sections. These slots segment the enclosed space, allowing volatilized rosin flux to escape during soldering while maintaining the insert-molded construction benefits. The receiving slots are positioned to receive soldering material and provide ventilation pathways.
Solution Approach 2:
The receiving slots act as intermediary channels that mediate between the insert-molded soldering sections and the external environment. They provide a controlled pathway for rosin flux volatilization to escape, preventing accumulation that would otherwise cause soldering defects, while still allowing the soldering sections to remain insert-molded for manufacturing simplicity.
2Reliability
If receiving slots are added to the housing, then rosin flux volatilization is prevented and soldering quality improves, but the housing structure becomes more complex
Solution Approach 1:
The patent merges the receiving slots directly into the housing structure during the molding process, combining the housing formation and receiving slot creation into a single manufacturing step. This integration minimizes additional complexity while achieving the function of preventing rosin flux accumulation. The receiving slots are formed as inherent features of the housing rather than separate components.
3Ease of manufacture
If traditional USB connector design is used, then manufacturing is simple, but the connector is not waterproof and reliability is reduced
Solution Approach 1:
The patent employs a shielding shell structure that provides waterproof protection while maintaining manufacturing feasibility. The shielding shell acts as a protective barrier that seals the connector components, preventing water ingress. This flexible protective structure is integrated into the overall connector assembly, providing IP67 or higher waterproof rating without significantly complicating the manufacturing process.
Data Source
AI summary
An electrical connector includes an insulative housing, a number of terminals carried by the insulative housing, a metallic shielding plate retained in the insulative housing, and a shielding shell attached to the insulative housing. The insulative housing has a number of receiving slots located at a back-end thereof. The terminals have a number of soldering portions exposed from the insulative housing. Each receiving slot is located between every two neighboring soldering portions to receive soldering material.