Type-C USB Connector Widened Terminals Large Current
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Solution Overview
Problem
The challenge is to create a Type-C-based USB connector that is cost-effective, suitable for mass production, and capable of reliably transmitting large currents while managing heat dissipation, as existing connectors face issues with high resistance and material costs due to their small size and complex terminal configurations.
Innovation Solution
The design features a Type-C-based USB connector with a housing, upper, and lower insert members, including widened conductive terminals with tear structures and integrally formed metallic shielding, allowing for improved contact areas and reduced resistance, enabling efficient large current transmission while being simple and inexpensive to manufacture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If special copper alloy with higher conductivity is chosen for terminals, then current transmission reliability is improved, but product cost increases
Solution Approach 1:
The patent changes the geometric parameters of the terminal structure by adding widened portions at both ends of the terminal body, increasing the contact area and effective transmission cross-section. This allows the use of ordinary copper alloy instead of expensive high-conductivity special alloys while maintaining reliable current transmission capability.
2Reliability
If terminal resistance is reduced through configuration changes, then current transmission efficiency is improved, but connector structure complexity increases
Solution Approach 1:
The patent applies local quality modification by adding widened portions only at the two ends of the terminal body where contact occurs, while keeping the middle portion of the terminal simple. This localized structural enhancement reduces contact resistance and improves current transmission efficiency without significantly increasing overall structural complexity.
3Volume of moving object
If connector size is reduced to meet miniaturization requirements, then adaptability to small devices is improved, but terminal contact area decreases leading to higher resistance
Solution Approach 1:
The patent employs nesting by placing the widened portions of the terminals within the compact connector housing structure. The terminals with enlarged contact areas are nested inside the small-sized connector body, allowing the connector to maintain miniaturized external dimensions while providing sufficiently large contact areas for reliable current transmission.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances the reliability and efficiency of transmitting large currents by increasing the active contact areas of the terminals, preventing overheating, and simplifying the manufacturing process, making it suitable for mass production without the need for expensive high-conductivity materials.
Implementation Method 1
each conductive terminal comprises a joint portion at a front end, a soldering portion at a rear end, and a main body provided within the insulating body and positioned between the joint portion and the soldering portion
Data Source
AI summary
The present invention provides a Type-C-based USB connector capable of transmitting large current. Since the lower ground terminal and the lower power signal terminal both are of tear structures, and the ground base of the lower ground terminal, the power signal base of the lower power signal terminal, the main body of the lower ground terminal and the main body of the lower power signal terminal are all widened parts, the active areas of the ground terminal and the power signal terminal are larger, which improves the ability and reliability to transmit large current, thus solving the technical problem that the temperature would be much too high when large current are transmitted. With the present invention, it is possible to improve reliability and operation ease of the product for transmitting large current.