Cable Connector Bent-Terminal Layout for Dense PCB Contact
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Solution Overview
Problem
Conventional cable connectors struggle to maintain stable electrical contact with high-density circuit boards due to limited elasticity and space constraints, leading to signal loss and interference.
Innovation Solution
The cable connector design features signal pair units with adjustable bent portions to enhance elasticity and reduce surface occupancy, along with a conductive housing and shielding cavities for improved signal integrity and anti-crosstalk performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bent portion of the signal terminal is positioned close to the head to enable assembly pressing, then the signal terminal can be pressed against the pin on the circuit board, but the bent portion occupies space on the circuit board surface in the pin arrangement direction, limiting high-density pin layout
Solution Approach 1:
The bent portion is repositioned from a location close to the head to a position closer to the middle of the signal terminal, and its extension direction is adjusted to be perpendicular to the pin arrangement direction. This dimensional reorientation allows the bent portion to provide pressing force without occupying valuable surface space in the pin arrangement direction, thereby enabling higher pin density on the circuit board while maintaining reliable electrical contact.
2Stability of the object's composition
If the bent portion extension length in the direction perpendicular to the main extension direction is increased to improve elasticity, then the signal terminal elasticity is improved, but the bent portion occupies more space on the circuit board surface
Solution Approach 1:
The bent portion's extension direction is changed to be perpendicular to the pin arrangement direction. This allows the bent portion to extend in a direction that does not consume space along the pin arrangement axis, thereby providing sufficient elasticity for reliable contact while minimizing surface occupancy in the critical pin arrangement direction.
Solution Approach 2:
The bent portion is positioned closer to the middle of the signal terminal rather than at the head, creating a localized elastic region that provides pressing force without affecting the overall space occupation in the pin arrangement direction. This local quality adjustment optimizes both elasticity and space utilization.
3Ease of manufacture
If conventional cable connector design is used with bent portion at the head, then assembly is simplified, but the first end of the signal terminal cannot be stably pressed against the corresponding pin on the circuit board
Solution Approach 1:
The bent portion is repositioned to the middle of the signal terminal and its extension direction is changed to be perpendicular to the pin arrangement direction. This structural adjustment improves the pressing stability against the pin while maintaining assembly simplicity, as the bent portion still provides the necessary elastic pressing force through its positioning and orientation.
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
This design ensures reliable and high-density electrical connections with reduced signal loss and improved anti-crosstalk, enabling efficient transmission of high-speed signals on high-density circuit boards.
Implementation Method 1
An extension length of the bent portion in a direction perpendicular to the main extension direction of the signal terminal may be increased, to improve elasticity of the signal terminal in the extension direction, and ensure reliable contact between the first end of the signal terminal and the pin on the circuit board
Data Source
AI summary
A cable connector includes a plurality of signal pair units that are disposed at intervals. Each signal pair unit includes two signal terminals that are disposed in parallel. A first end of each signal terminal is configured to be in electrical contact with a corresponding pin on a circuit board. A second end of each signal terminal is configured to electrically connect to a corresponding cable. A bent portion is formed on each signal terminal in an extension direction of the signal terminal, and there is a specific distance between the bent portion and the first end. In this way, an extension length of the bent portion may be increased to ensure a reliable electrical connection between the cable connector and the circuit board without occupying surface space of the circuit board for being in contact with a mating surface of the signal terminal.